/* roulang page: index */
:root{
  --purple:#5B2E8C;
  --purple-dark:#4A2473;
  --purple-deep:#3A1D5C;
  --purple-soft:#F3EDFA;
  --purple-line:#DDD0F0;
  --cyan:#17C2A4;
  --cyan-hover:#12A98F;
  --cyan-soft:#E7F8F4;
  --gold:#E0A22B;
  --bg:#FAF8F5;
  --bg-alt:#F3EFE9;
  --dark:#171420;
  --dark-2:#1F1A2E;
  --text:#1D1A24;
  --text-2:#575261;
  --text-3:#8A8494;
  --border:#E7E1D8;
  --divider:#EFEAE2;
  --ok:#1F9D6B;
  --warn:#E0A22B;
  --err:#D64545;
  --disabled:#C9C4CE;
  --r-pill:999px;
  --r-lg:24px;
  --r:18px;
  --r-img:14px;
  --r-input:12px;
  --r-badge:6px;
  --sh1:0 1px 2px rgba(29,26,36,.06),0 2px 8px rgba(29,26,36,.05);
  --sh2:0 8px 24px -8px rgba(91,46,140,.18);
  --sh-dock:0 12px 40px -12px rgba(29,26,36,.22);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",SimSun,serif;
  --sans:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --mono:ui-monospace,SFMono-Regular,Consolas,"Courier New",monospace;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--sans);
  font-size:16.5px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input,textarea{font:inherit;}
h1,h2,h3,h4{font-family:var(--serif);font-weight:700;letter-spacing:.02em;line-height:1.28;margin:0;color:var(--text);}
p{margin:0 0 1.1em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--purple);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:96px 0;}
.section-alt{background:var(--bg-alt);}
.section-dark{background:var(--dark);color:#EDEAF3;}
.sec-head{max-width:760px;margin-bottom:48px;}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.sec-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--purple);font-weight:600;margin-bottom:14px;
}
.sec-eyebrow::before{content:"";width:20px;height:2px;background:var(--cyan);border-radius:2px;}
.sec-title{font-size:clamp(24px,3vw,36px);margin-bottom:16px;}
.sec-desc{color:var(--text-2);font-size:16px;line-height:1.9;max-width:720px;}
.section-dark .sec-desc{color:#B9B3C6;}

/* ============ 浮动 Dock 导航 ============ */
.dock{
  position:fixed;top:18px;left:50%;transform:translateX(-50%);
  z-index:80;
  width:min(1180px,92vw);
  display:flex;align-items:center;gap:18px;
  padding:10px 12px 10px 18px;
  background:rgba(255,255,255,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid rgba(231,225,216,.9);
  border-radius:var(--r-pill);
  box-shadow:var(--sh-dock);
  transition:width .28s ease,box-shadow .28s ease,background .28s ease;
}
.dock.compact{width:min(1130px,88vw);box-shadow:0 14px 44px -12px rgba(29,26,36,.3);background:rgba(255,255,255,.88);}
.dock-logo{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:34px;height:34px;border-radius:11px;
  background:linear-gradient(135deg,var(--purple),#7C4BB8);
  display:grid;place-items:center;color:#fff;
  box-shadow:0 6px 14px -6px rgba(91,46,140,.6);
}
.logo-mark svg{width:18px;height:18px;}
.logo-text{font-family:var(--serif);font-size:17px;font-weight:700;letter-spacing:.01em;white-space:nowrap;}
.dock-nav{display:flex;align-items:center;gap:2px;margin-left:auto;}
.dock-nav a{
  position:relative;display:inline-flex;align-items:center;
  height:40px;padding:0 14px;border-radius:var(--r-pill);
  font-size:14.5px;color:var(--text-2);white-space:nowrap;
  transition:background .2s ease,color .2s ease;
}
.dock-nav a:hover{background:var(--purple-soft);color:var(--purple-dark);}
.dock-nav a.active{color:var(--purple-dark);font-weight:600;}
.dock-nav a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:5px;height:2px;
  background:var(--purple);border-radius:2px;
}
.dock-actions{display:flex;align-items:center;gap:8px;flex-shrink:0;}
.icon-btn{
  width:40px;height:40px;border-radius:var(--r-pill);
  display:grid;place-items:center;color:var(--text-2);
  transition:background .2s ease,color .2s ease;
}
.icon-btn:hover{background:var(--purple-soft);color:var(--purple-dark);}
.icon-btn svg{width:19px;height:19px;}
.burger{display:none;width:40px;height:40px;border-radius:var(--r-pill);place-items:center;color:var(--text);}
.burger:hover{background:var(--purple-soft);}
.burger svg{width:20px;height:20px;}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  border-radius:var(--r-pill);font-size:15px;font-weight:600;
  padding:12px 22px;line-height:1.2;
  transition:transform .18s ease,background .18s ease,box-shadow .18s ease,color .18s ease,border-color .18s ease;
  border:1.5px solid transparent;
}
.btn svg{width:18px;height:18px;flex-shrink:0;}
.btn-primary{background:var(--cyan);color:#0B2A24;box-shadow:0 8px 20px -10px rgba(23,194,164,.75);}
.btn-primary:hover{background:var(--cyan-hover);transform:translateY(-1px);color:#062019;}
.btn-primary:active{transform:translateY(0);}
.btn-outline{border-color:var(--purple-line);color:var(--purple-dark);background:#fff;}
.btn-outline:hover{background:var(--purple-soft);border-color:var(--purple);}
.btn-ghost{padding:12px 10px;color:var(--purple-dark);}
.btn-ghost:hover{color:var(--cyan-hover);}
.btn-ghost svg{width:16px;height:16px;transition:transform .2s ease;}
.btn-ghost:hover svg{transform:translateX(3px);}
.btn-sm{padding:9px 18px;font-size:14px;}
.btn[disabled],.btn.is-disabled{background:var(--disabled);color:#fff;cursor:not-allowed;box-shadow:none;transform:none;}
.btn.is-loading{color:transparent;position:relative;}
.btn.is-loading::after{
  content:"";position:absolute;width:16px;height:16px;border-radius:50%;
  border:2px solid rgba(255,255,255,.5);border-top-color:#fff;
  animation:spin .7s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg);}}

/* 下载按钮组 */
.dl-group{display:flex;flex-wrap:wrap;gap:12px;margin:30px 0 26px;}
.dl-btn{
  display:flex;align-items:center;gap:12px;min-width:194px;
  padding:12px 20px;border-radius:var(--r-pill);
  background:#fff;border:1.5px solid var(--border);
  box-shadow:var(--sh1);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.dl-btn:hover{transform:translateY(-2px);box-shadow:var(--sh2);border-color:var(--purple-line);}
.dl-btn .dl-ico{width:30px;height:30px;border-radius:9px;display:grid;place-items:center;background:var(--purple-soft);color:var(--purple);flex-shrink:0;}
.dl-btn .dl-ico svg{width:16px;height:16px;}
.dl-txt{display:flex;flex-direction:column;text-align:left;line-height:1.25;}
.dl-txt strong{font-size:15px;font-weight:600;}
.dl-txt span{font-size:12px;color:var(--text-3);font-family:var(--mono);}

/* 徽章 / 标签 */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 10px;border-radius:var(--r-badge);
  font-size:12.5px;font-weight:600;line-height:1.7;
  background:var(--purple-soft);color:var(--purple-dark);
}
.badge-gold{background:#FBF1DA;color:#8A6112;}
.badge-cyan{background:var(--cyan-soft);color:#0C7A66;}
.badge-line{background:#fff;border:1px solid var(--border);color:var(--text-2);}

/* ============ Hero ============ */
.page-top{padding-top:118px;}
.hero{padding:34px 0 72px;}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px 6px 8px;border-radius:var(--r-pill);
  background:#fff;border:1px solid var(--border);box-shadow:var(--sh1);
  font-size:13px;color:var(--text-2);
}
.hero-badge b{background:var(--gold);color:#3A2600;border-radius:var(--r-pill);padding:2px 10px;font-size:12px;font-weight:700;}
.hero h1{
  font-size:clamp(30px,4.4vw,52px);
  margin:22px 0 18px;
  letter-spacing:.01em;
}
.hero-sub{font-size:17px;color:var(--text-2);max-width:560px;line-height:1.9;}
.trust-row{
  display:flex;flex-wrap:wrap;gap:20px 26px;
  padding-top:22px;border-top:1px solid var(--divider);
}
.trust-item{display:flex;flex-direction:column;gap:2px;}
.trust-item b{font-family:var(--mono);font-size:15px;color:var(--text);}
.trust-item span{font-size:12.5px;color:var(--text-3);}
.hero-visual{position:relative;}
.media-frame{
  position:relative;width:100%;aspect-ratio:16/10;
  border-radius:var(--r-lg);overflow:hidden;
  background:rgba(91,46,140,.12);
  box-shadow:0 24px 60px -24px rgba(58,29,92,.45);
}
.media-frame img{width:100%;height:100%;object-fit:cover;}
.media-frame::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(91,46,140,.32),rgba(23,194,164,.22));
}
.hero-dots{
  position:absolute;inset:auto 0 0 0;height:100%;
  background-image:radial-gradient(rgba(255,255,255,.4) 1px,transparent 1px);
  background-size:14px 14px;opacity:.35;pointer-events:none;
}
.hero-float{
  position:absolute;left:-18px;bottom:26px;
  background:#fff;border:1px solid var(--border);border-radius:var(--r);
  padding:14px 18px;box-shadow:var(--sh2);
  display:flex;align-items:center;gap:12px;
}
.hero-float .dot-live{width:9px;height:9px;border-radius:50%;background:var(--cyan);box-shadow:0 0 0 4px rgba(23,194,164,.2);}
.hero-float p{margin:0;font-size:13px;color:var(--text-2);}
.hero-float b{display:block;font-size:14px;color:var(--text);}

/* ============ 指标条 ============ */
.metrics{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);
  box-shadow:var(--sh1);
  display:grid;grid-template-columns:repeat(4,1fr);
  padding:28px 8px;margin-top:-16px;
}
.metric{text-align:center;padding:0 18px;border-right:1px solid var(--divider);}
.metric:last-child{border-right:0;}
.metric b{display:block;font-family:var(--mono);font-size:clamp(20px,2.4vw,28px);color:var(--purple-dark);letter-spacing:.01em;}
.metric span{font-size:13px;color:var(--text-3);}

/* ============ 价值区块 Z 字 ============ */
.zblock{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.zblock + .zblock{margin-top:88px;}
.zblock.reverse .z-media{order:2;}
.z-media{position:relative;border-radius:var(--r-lg);overflow:hidden;aspect-ratio:16/10;background:rgba(91,46,140,.12);box-shadow:var(--sh1);}
.z-media img{width:100%;height:100%;object-fit:cover;}
.z-body h3{font-size:clamp(21px,2.2vw,27px);margin-bottom:14px;}
.z-body > p{color:var(--text-2);}
.point-list{display:grid;gap:16px;margin-top:26px;}
.point{display:flex;gap:14px;align-items:flex-start;}
.point-ico{
  width:38px;height:38px;flex-shrink:0;border-radius:12px;
  background:var(--cyan-soft);color:#0C7A66;display:grid;place-items:center;
}
.point-ico svg{width:18px;height:18px;}
.point h4{font-size:17px;font-family:var(--sans);font-weight:700;margin-bottom:4px;}
.point p{font-size:14.5px;color:var(--text-2);margin:0;line-height:1.8;}

/* ============ 截图轮播 ============ */
.rail-wrap{position:relative;}
.rail{
  display:flex;gap:24px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:6px 4px 20px;scrollbar-width:none;
}
.rail::-webkit-scrollbar{display:none;}
.rail-item{flex:0 0 calc((100% - 48px)/3);scroll-snap-align:start;}
.shot{
  border-radius:var(--r);overflow:hidden;background:#fff;
  border:1px solid var(--border);box-shadow:var(--sh1);
}
.shot .frame{aspect-ratio:16/9;background:rgba(91,46,140,.12);overflow:hidden;}
.shot .frame img{width:100%;height:100%;object-fit:cover;}
.shot figcaption{font-size:13px;color:var(--text-3);text-align:center;padding:12px 10px;}
.rail-nav{display:flex;align-items:center;justify-content:center;gap:16px;margin-top:8px;}
.rail-arrow{
  width:44px;height:44px;border-radius:var(--r-pill);border:1.5px solid var(--purple-line);
  display:grid;place-items:center;color:var(--purple-dark);background:#fff;
  transition:background .2s ease,border-color .2s ease;
}
.rail-arrow:hover{background:var(--purple-soft);border-color:var(--purple);}
.rail-arrow svg{width:18px;height:18px;}
.rail-dots{display:flex;gap:8px;}
.rail-dots .dot{width:8px;height:8px;border-radius:50%;background:var(--purple-line);transition:all .2s ease;}
.rail-dots .dot.active{background:var(--purple);width:22px;border-radius:4px;}

/* ============ 规格卡 ============ */
.spec-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.spec-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--r);
  padding:26px;box-shadow:var(--sh1);
  transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.spec-card:hover{transform:translateY(-2px);box-shadow:var(--sh2);border-color:var(--purple-line);}
.spec-card h3{font-size:20px;margin-bottom:6px;}
.spec-card > p{font-size:14px;color:var(--text-3);margin-bottom:18px;}
.spec-row{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:12px 0;border-bottom:1px dashed var(--divider);
}
.spec-row:last-child{border-bottom:0;}
.spec-row dt,.spec-key{font-size:14px;color:var(--text-3);}
.spec-row dd,.spec-val{
  margin:0;font-family:var(--mono);font-size:14px;color:var(--text);
  display:flex;align-items:center;gap:8px;text-align:right;
}
.tick{width:18px;height:18px;border-radius:50%;display:grid;place-items:center;background:rgba(31,157,107,.14);color:var(--ok);flex-shrink:0;}
.tick svg{width:11px;height:11px;}
.cross{background:rgba(214,69,69,.12);color:var(--err);}

/* ============ 评价墙 ============ */
.review-grid{columns:2;column-gap:24px;}
.review{
  break-inside:avoid;margin-bottom:24px;
  background:#fff;border:1px solid var(--border);border-radius:var(--r);
  padding:24px;box-shadow:var(--sh1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.review:hover{transform:translateY(-2px);box-shadow:var(--sh2);border-color:var(--purple-line);}
.review-head{display:flex;align-items:center;gap:12px;margin-bottom:14px;}
.avatar{
  width:40px;height:40px;border-radius:50%;flex-shrink:0;
  background:var(--purple-soft);color:var(--purple-dark);
  display:grid;place-items:center;font-weight:700;font-size:15px;
}
.review-head b{display:block;font-size:15px;}
.stars{display:flex;gap:2px;color:var(--gold);}
.stars svg{width:13px;height:13px;}
.review p{font-size:14.8px;color:var(--text-2);line-height:1.85;}
.review .tagline{margin-top:14px;}

/* ============ 最新信息（CMS） ============ */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap;}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.card{
  background:#fff;border:1px solid var(--border);border-radius:var(--r);
  overflow:hidden;box-shadow:var(--sh1);display:flex;flex-direction:column;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh2);border-color:var(--purple-line);}
.card-cover{display:block;aspect-ratio:16/10;overflow:hidden;background:rgba(91,46,140,.12);}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.card:hover .card-cover img{transform:scale(1.04);}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:12px;flex:1;}
.card-title{font-size:18px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-title a:hover{color:var(--purple-dark);}
.card-desc{
  font-size:14px;color:var(--text-2);line-height:1.8;margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-meta{display:flex;align-items:center;gap:12px;font-size:12.5px;color:var(--text-3);font-family:var(--mono);margin-top:auto;}
.card-more{display:inline-flex;align-items:center;gap:6px;font-size:13.5px;color:var(--purple-dark);font-weight:600;}
.card-more svg{width:14px;height:14px;transition:transform .2s ease;}
.card:hover .card-more svg{transform:translateX(3px);}
.empty-state{
  grid-column:1/-1;text-align:center;padding:56px 24px;
  background:#fff;border:1px dashed var(--purple-line);border-radius:var(--r-lg);
}
.empty-state .empty-art{
  width:64px;height:64px;margin:0 auto 18px;border-radius:20px;
  background:var(--purple-soft);display:grid;place-items:center;color:var(--purple);
}
.empty-state .empty-art svg{width:28px;height:28px;}
.empty-state p{color:var(--text-2);margin-bottom:18px;}

/* ============ FAQ ============ */
.faq-list{max-width:860px;margin:0 auto;display:grid;gap:14px;}
.faq-item{
  background:#fff;border:1px solid var(--border);border-radius:var(--r);
  overflow:hidden;box-shadow:var(--sh1);transition:border-color .2s ease;
}
.faq-item.open{border-color:var(--purple-line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  text-align:left;padding:20px 24px 20px 26px;
  font-family:var(--sans);font-size:18px;font-weight:700;color:var(--text);
  position:relative;
}
.faq-q::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:2px;
  background:var(--purple);border-radius:2px;transition:background .2s ease;
}
.faq-item.open .faq-q::before{background:var(--cyan);}
.faq-q:hover{color:var(--purple-dark);}
.faq-arrow{width:20px;height:20px;flex-shrink:0;color:var(--text-3);transition:transform .2s ease;}
.faq-item.open .faq-arrow{transform:rotate(180deg);color:var(--cyan-hover);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;}
.faq-a .faq-a-inner{padding:0 20px 20px;color:var(--text-2);font-size:15.5px;line-height:1.85;}
.faq-item.open .faq-a{max-height:420px;}

/* ============ 底部 CTA ============ */
.cta{
  background:var(--dark);
  background-image:linear-gradient(135deg,rgba(91,46,140,.35),rgba(23,194,164,.28));
  color:#F2EFF7;text-align:center;
  border-radius:0;
}
.cta h2{font-size:clamp(24px,3vw,38px);color:#fff;margin-bottom:16px;}
.cta p{color:#C6C0D4;max-width:660px;margin:0 auto 30px;}
.cta .dl-group{justify-content:center;}
.cta .dl-btn{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.18);color:#fff;}
.cta .dl-btn:hover{border-color:rgba(255,255,255,.4);box-shadow:0 10px 26px -12px rgba(0,0,0,.6);}
.cta .dl-btn .dl-ico{background:rgba(255,255,255,.12);color:#fff;}
.cta .dl-txt span{color:#A9A2B8;}
.cta-micro{display:flex;flex-wrap:wrap;justify-content:center;gap:14px 26px;margin-top:26px;font-size:13px;color:#A9A2B8;font-family:var(--mono);}

/* ============ 页脚 ============ */
.footer{background:var(--dark-2);color:#B9B3C6;padding:72px 0 0;font-size:14px;}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px;}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;color:#fff;}
.foot-brand .logo-mark{background:linear-gradient(135deg,var(--purple),var(--cyan));}
.foot-brand span{font-family:var(--serif);font-size:17px;font-weight:700;color:#fff;}
.footer p{color:#9C95AC;line-height:1.85;}
.foot-title{font-size:15px;color:#fff;font-weight:700;margin-bottom:16px;font-family:var(--sans);}
.foot-links{display:grid;gap:10px;}
.foot-links a{color:#B9B3C6;transition:color .2s ease,padding-left .2s ease;}
.foot-links a:hover{color:var(--cyan);padding-left:3px;}
.foot-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  padding:22px 0;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#8A8497;
}

/* ============ 移动端抽屉 ============ */
.drawer-mask{
  position:fixed;inset:0;background:rgba(23,20,32,.45);
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;z-index:90;
}
.drawer-mask.show{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);
  background:#fff;z-index:95;padding:22px 20px 32px;
  transform:translateX(102%);transition:transform .3s ease;
  box-shadow:-20px 0 60px -20px rgba(29,26,36,.4);
  display:flex;flex-direction:column;gap:6px;overflow-y:auto;
}
.drawer.show{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px;}
.drawer a.drawer-link{
  display:flex;align-items:center;height:56px;padding:0 14px;border-radius:14px;
  font-size:18px;color:var(--text);transition:background .2s ease;
}
.drawer a.drawer-link:hover{background:var(--purple-soft);}
.drawer a.drawer-link.active{color:var(--purple-dark);font-weight:700;background:var(--purple-soft);}
.drawer .btn{margin-top:18px;width:100%;}

/* 移动端底部下载条 */
.mobile-bar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:rgba(255,255,255,.94);backdrop-filter:blur(12px);
  border-top:1px solid var(--border);
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  align-items:center;gap:12px;
}
.mobile-bar .mb-txt{flex:1;font-size:13px;color:var(--text-3);line-height:1.4;}
.mobile-bar .mb-txt b{display:block;font-size:14.5px;color:var(--text);}
.mobile-bar .btn{flex-shrink:0;}

/* ============ 响应式 ============ */
@media (min-width:1440px){
  :root{--container:1200px;}
}
@media (max-width:1199px){
  .dock-nav a{padding:0 10px;font-size:14px;}
  .rail-item{flex:0 0 calc((100% - 24px)/2);}
}
@media (max-width:1023px){
  .section{padding:72px 0;}
  .dock-nav{display:none;}
  .burger{display:grid;}
  .dock{padding:8px 10px 8px 14px;gap:10px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .page-top{padding-top:104px;}
  .hero{padding:18px 0 56px;}
  .hero-sub{max-width:none;}
  .metrics{grid-template-columns:repeat(2,1fr);gap:18px 0;padding:24px 8px;}
  .metric:nth-child(2){border-right:0;}
  .zblock{grid-template-columns:1fr;gap:28px;}
  .zblock.reverse .z-media{order:0;}
  .zblock + .zblock{margin-top:64px;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .review-grid{columns:2;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  body{font-size:16px;padding-bottom:78px;}
  .container{padding:0 16px;}
  .section{padding:56px 0;}
  .hero h1{font-size:clamp(26px,7vw,34px);}
  .hero-float{left:0;bottom:-14px;padding:12px 14px;}
  .dl-group{gap:10px;}
  .dl-btn{width:100%;min-width:0;}
  .trust-row{gap:16px 22px;}
  .spec-grid{grid-template-columns:1fr;}
  .news-grid{grid-template-columns:1fr;}
  .review-grid{columns:1;}
  .rail-item{flex:0 0 86%;}
  .rail-arrow{display:none;}
  .faq-q{font-size:16.5px;padding:18px 18px 18px 20px;}
  .foot-grid{grid-template-columns:1fr;gap:28px;}
  .foot-bottom{flex-direction:column;gap:8px;}
  .mobile-bar{display:flex;}
  .cta{border-radius:0;}
}
@media (max-width:420px){
  .hero h1{font-size:26px;}
  .metric b{font-size:19px;}
  .btn{padding:11px 18px;font-size:14px;}
  .logo-text{font-size:15px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
}

/* roulang page: article */
:root{
  --brand:#5B2E8C;
  --brand-deep:#4A2473;
  --brand-dark:#3A1D5C;
  --brand-soft:#F3EDFA;
  --brand-line:#DDD0F0;
  --teal:#17C2A4;
  --teal-hover:#12A98F;
  --teal-soft:#E7F8F4;
  --gold:#E0A22B;
  --bg:#FAF8F5;
  --bg-2:#F3EFE9;
  --ink-dark:#171420;
  --ink-dark-2:#1F1A2E;
  --text:#1D1A24;
  --text-2:#575261;
  --text-3:#8A8494;
  --line:#E7E1D8;
  --line-2:#EFEAE2;
  --ok:#1F9D6B;
  --warn:#E0A22B;
  --err:#D64545;
  --disabled:#C9C4CE;
  --r-pill:999px;
  --r-lg:24px;
  --r-card:18px;
  --r-img:14px;
  --r-input:12px;
  --r-badge:6px;
  --sh-1:0 1px 2px rgba(29,26,36,.06), 0 2px 8px rgba(29,26,36,.05);
  --sh-2:0 8px 24px -8px rgba(91,46,140,.18);
  --sh-dock:0 12px 40px -12px rgba(29,26,36,.22);
  --container:1200px;
  --font-title:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --font-body:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-mono:ui-monospace,"SFMono-Regular",Consolas,"Courier New",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4{font-family:var(--font-title);font-weight:700;letter-spacing:.02em;line-height:1.28;margin:0;color:var(--text)}
p{margin:0 0 1.1em}
ul,ol{margin:0 0 1.1em;padding-left:1.4em}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
.container{max-width:var(--container);margin:0 auto;padding:0 24px}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}

/* ---------- Dock ---------- */
.dock{
  position:fixed;top:18px;left:50%;transform:translateX(-50%);
  width:min(1180px,92vw);z-index:90;
  display:flex;align-items:center;gap:18px;
  padding:10px 14px 10px 20px;
  border-radius:var(--r-pill);
  background:rgba(255,255,255,.72);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border:1px solid rgba(255,255,255,.85);
  box-shadow:var(--sh-dock);
  transition:width .28s ease,padding .28s ease,box-shadow .28s ease;
}
.dock.shrunk{width:min(1136px,90vw);box-shadow:0 16px 46px -14px rgba(29,26,36,.3)}
.dock-logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;font-family:var(--font-title);font-weight:700;font-size:17px;color:var(--brand-dark)}
.logo-mark{width:32px;height:32px;border-radius:10px;display:grid;place-items:center;background:linear-gradient(135deg,var(--brand) 0%,var(--teal) 100%);color:#fff;flex:0 0 auto}
.logo-mark svg{width:18px;height:18px}
.logo-text{white-space:nowrap}
.dock-nav{display:flex;align-items:center;gap:2px;margin-left:auto;flex-wrap:nowrap}
.dock-nav a{
  position:relative;padding:9px 13px;border-radius:var(--r-pill);
  font-size:14.5px;color:var(--text-2);white-space:nowrap;transition:background .18s ease,color .18s ease;
}
.dock-nav a:hover{background:var(--brand-soft);color:var(--brand-deep)}
.dock-nav a.active{color:var(--brand-deep);font-weight:600;background:var(--brand-soft)}
.dock-nav a.active::after{
  content:"";position:absolute;left:50%;transform:translateX(-50%);bottom:2px;
  width:22px;height:2px;border-radius:2px;background:var(--brand);
}
.dock-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.icon-btn{
  width:40px;height:40px;border-radius:var(--r-pill);display:grid;place-items:center;
  color:var(--text-2);border:1px solid var(--line);background:#fff;transition:.18s ease;
}
.icon-btn:hover{color:var(--brand);border-color:var(--brand-line);background:var(--brand-soft)}
.icon-btn svg{width:18px;height:18px}
.burger{display:none;width:40px;height:40px;border-radius:var(--r-pill);place-items:center;border:1px solid var(--line);background:#fff}
.burger svg{width:20px;height:20px}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  border-radius:var(--r-pill);font-weight:600;font-size:15px;
  padding:13px 26px;border:1.5px solid transparent;cursor:pointer;
  transition:transform .18s ease,background .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.btn svg{width:18px;height:18px;flex:0 0 auto}
.btn-primary{background:var(--teal);color:#062D26;box-shadow:0 6px 18px -8px rgba(23,194,164,.7)}
.btn-primary:hover{background:var(--teal-hover);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{border-color:var(--brand);color:var(--brand-deep);background:transparent}
.btn-ghost:hover{background:var(--brand-soft)}
.btn-sm{padding:10px 18px;font-size:14px}
.btn-lg{padding:16px 34px;font-size:16px}
.btn-text{color:var(--brand-deep);font-weight:600;padding:8px 2px;gap:6px}
.btn-text:hover{color:var(--teal-hover)}
.btn:disabled{background:var(--disabled);color:#fff;cursor:not-allowed;transform:none;box-shadow:none}

/* 抽屉 */
.drawer{
  position:fixed;inset:0 0 0 auto;width:min(320px,86vw);background:#fff;z-index:120;
  transform:translateX(102%);transition:transform .3s ease;padding:22px 20px;
  box-shadow:-20px 0 50px -20px rgba(29,26,36,.35);display:flex;flex-direction:column;
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.drawer-head strong{font-family:var(--font-title);font-size:17px;color:var(--brand-dark)}
.drawer nav{display:flex;flex-direction:column}
.drawer nav a{display:flex;align-items:center;font-size:18px;line-height:56px;border-bottom:1px solid var(--line-2);color:var(--text-2)}
.drawer nav a:hover,.drawer nav a.active{color:var(--brand-deep)}
.drawer .btn{margin-top:20px;width:100%}
.scrim{position:fixed;inset:0;background:rgba(23,20,32,.45);opacity:0;pointer-events:none;transition:opacity .28s ease;z-index:110}
.scrim.open{opacity:1;pointer-events:auto}

/* ---------- 面包屑 ---------- */
.crumb-wrap{padding-top:118px}
.crumb{font-size:13px;color:var(--text-3);display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.crumb a{color:var(--text-3)}
.crumb a:hover{color:var(--brand)}
.crumb .sep{color:var(--line);font-weight:400}
.crumb .cur{color:var(--brand-deep);font-weight:600}

/* ---------- 文章头 ---------- */
.article-shell{padding:26px 0 0}
.article-head{max-width:880px}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--r-badge);font-size:13px;font-weight:600;line-height:1.6;
}
.badge-purple{background:var(--brand-soft);color:var(--brand-deep)}
.badge-gold{background:#FBF1DC;color:#8A6212}
.badge-teal{background:var(--teal-soft);color:#0C7A68}
.article-head h1{font-size:clamp(28px,3.6vw,42px);margin:16px 0 18px}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px 20px;
  font-size:13.5px;color:var(--text-3);font-family:var(--font-mono);
}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:var(--line)}
.head-rule{height:1px;background:var(--line-2);margin-top:24px}

/* ---------- 正文布局 ---------- */
.article-grid{
  display:grid;grid-template-columns:minmax(0,760px) 300px;
  gap:56px;justify-content:center;align-items:start;
  padding:44px 0 0;
}
.article-body{font-size:17px;line-height:1.9;color:var(--text);max-width:760px}
.article-body>*:first-child{margin-top:0}
.article-body h2{
  position:relative;font-size:clamp(22px,2.4vw,28px);
  margin:2.2em 0 .85em;padding-left:20px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.28em;width:5px;height:1.05em;border-radius:3px;
  background:linear-gradient(180deg,var(--brand),var(--teal));
}
.article-body h3{font-size:20px;margin:1.7em 0 .6em;font-weight:700}
.article-body h4{font-size:17.5px;margin:1.4em 0 .5em}
.article-body p{margin:0 0 1.15em;color:#2A2632}
.article-body a{color:var(--brand-deep);text-decoration:underline;text-decoration-color:var(--brand-line);text-underline-offset:3px}
.article-body a:hover{color:var(--teal-hover);text-decoration-color:var(--teal)}
.article-body ul,.article-body ol{padding-left:1.35em;margin:0 0 1.2em}
.article-body li{margin-bottom:.55em;line-height:1.85}
.article-body ul li::marker{color:var(--brand)}
.article-body ol li::marker{color:var(--brand);font-weight:700}
.article-body blockquote{
  margin:1.6em 0;padding:16px 22px;border-left:3px solid var(--brand);
  background:var(--brand-soft);border-radius:0 var(--r-img) var(--r-img) 0;color:#3A3446;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-img);margin:1.6em auto;box-shadow:var(--sh-1)}
.article-body figure{margin:1.8em 0}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px}
.article-body .table-scroll{overflow-x:auto;margin:1.6em 0;border:1px solid var(--line);border-radius:var(--r-img);background:#fff}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;min-width:520px}
.article-body thead th{background:var(--brand-soft);color:var(--brand-deep);text-align:left;font-weight:700}
.article-body th,.article-body td{padding:12px 16px;border-bottom:1px solid var(--line-2)}
.article-body tbody tr:last-child td{border-bottom:0}
.article-body tbody tr:hover{background:#FCFAF7}
.article-body code{
  font-family:var(--font-mono);font-size:.92em;background:var(--bg-2);
  padding:2px 6px;border-radius:6px;color:var(--brand-deep);
}
.article-body hr{border:0;border-top:1px solid var(--line-2);margin:2.4em 0}

/* ---------- 目录 ---------- */
.toc{
  position:sticky;top:106px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);padding:22px 20px;box-shadow:var(--sh-1);
}
.toc h3{font-size:15px;font-family:var(--font-body);font-weight:700;color:var(--text-2);letter-spacing:.06em;margin-bottom:14px}
.toc ol{list-style:none;margin:0;padding:0;counter-reset:toc}
.toc li{margin:0}
.toc a{
  display:block;font-size:14px;color:var(--text-2);line-height:1.6;
  padding:7px 0 7px 12px;border-left:2px solid var(--line-2);
  transition:color .18s ease,border-color .18s ease,background .18s ease;
}
.toc a:hover{color:var(--brand-deep);background:#FCFAF7}
.toc a.on{color:var(--brand-deep);font-weight:600;border-left-color:var(--brand);background:var(--brand-soft)}
.toc .toc-empty{font-size:13.5px;color:var(--text-3)}
.toc-mobile{display:none}

/* ---------- 空态 ---------- */
.empty-state{
  text-align:center;padding:64px 24px;background:#fff;border:1px dashed var(--line);
  border-radius:var(--r-card);
}
.empty-art{
  width:88px;height:88px;margin:0 auto 20px;border-radius:22px;
  display:grid;place-items:center;
  background:rgba(91,46,140,.12);color:var(--brand);
}
.empty-art svg{width:40px;height:40px}
.empty-state h2{font-size:22px;margin-bottom:10px}
.empty-state p{color:var(--text-2);font-size:15px;max-width:420px;margin:0 auto 22px}

/* ---------- 文末 ---------- */
.tail-note{margin-top:44px;padding-top:26px;border-top:1px solid var(--line-2)}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-bottom:34px}
.tag-row .label{font-size:13px;color:var(--text-3)}
.tag{
  font-size:13px;padding:6px 14px;border-radius:var(--r-pill);
  background:#fff;border:1px solid var(--line);color:var(--text-2);transition:.18s ease;
}
.tag:hover{border-color:var(--brand-line);background:var(--brand-soft);color:var(--brand-deep)}

.pager{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-bottom:44px}
.pager a{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:20px 22px;box-shadow:var(--sh-1);transition:.2s ease;display:block;
}
.pager a:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--brand-line)}
.pager .dir{font-size:12.5px;color:var(--text-3);display:flex;align-items:center;gap:6px;margin-bottom:8px}
.pager .ttl{font-family:var(--font-title);font-size:16.5px;font-weight:700;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.pager .right{text-align:right}
.pager .right .dir{justify-content:flex-end}

.sec-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:22px}
.sec-head h2{font-size:clamp(20px,2.3vw,26px)}
.sec-head .more{font-size:14px;color:var(--brand-deep);font-weight:600;display:inline-flex;align-items:center;gap:6px}
.sec-head .more:hover{color:var(--teal-hover)}

.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-bottom:40px}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  display:flex;flex-direction:column;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--brand-line)}
.card-cover{position:relative;aspect-ratio:16/10;background:rgba(91,46,140,.12);overflow:hidden}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.card:hover .card-cover img{transform:scale(1.03)}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:17px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-body p{font-size:14px;color:var(--text-2);line-height:1.75;margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{display:flex;align-items:center;gap:12px;font-size:12.5px;color:var(--text-3);
  font-family:var(--font-mono);margin-top:auto;padding-top:6px}
.card-meta .arrow{margin-left:auto;color:var(--brand);transition:transform .2s ease}
.card:hover .card-meta .arrow{transform:translateX(3px)}

.back-cat{
  display:inline-flex;align-items:center;gap:8px;font-size:14.5px;font-weight:600;
  color:var(--brand-deep);margin-bottom:8px;
}
.back-cat:hover{color:var(--teal-hover)}

/* ---------- 下载 CTA ---------- */
.cta-band{
  margin-top:56px;background:linear-gradient(135deg,#1F1A2E 0%,#2C1A46 55%,#123B37 100%);
  border-radius:var(--r-lg);padding:56px 40px;text-align:center;position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(600px 280px at 50% -10%,rgba(23,194,164,.22),transparent 70%);
}
.cta-band>*{position:relative}
.cta-band h2{color:#fff;font-size:clamp(22px,2.8vw,32px);margin-bottom:14px}
.cta-band p{color:rgba(255,255,255,.72);font-size:15.5px;max-width:560px;margin:0 auto 28px;line-height:1.85}
.cta-btns{display:flex;flex-wrap:wrap;gap:14px;justify-content:center}
.dl-btn{
  display:inline-flex;align-items:center;gap:12px;background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.16);border-radius:14px;padding:12px 20px;
  color:#fff;text-align:left;transition:.2s ease;min-width:190px;
}
.dl-btn:hover{background:rgba(255,255,255,.12);border-color:rgba(23,194,164,.6);transform:translateY(-1px)}
.dl-btn .ic{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;background:rgba(23,194,164,.18);color:var(--teal)}
.dl-btn .ic svg{width:18px;height:18px}
.dl-btn .t1{font-size:14.5px;font-weight:600;line-height:1.4}
.dl-btn .t2{font-size:12px;color:rgba(255,255,255,.6);font-family:var(--font-mono);line-height:1.5}
.cta-spec{margin-top:26px;display:flex;flex-wrap:wrap;gap:10px 26px;justify-content:center;
  font-size:12.5px;color:rgba(255,255,255,.6);font-family:var(--font-mono)}

/* ---------- 页脚 ---------- */
.footer{margin-top:96px;background:var(--ink-dark);color:#C8C3D2;padding:72px 0 26px}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:44px}
.foot-brand{display:flex;align-items:center;gap:10px;font-family:var(--font-title);font-weight:700;
  font-size:17px;color:#fff;margin-bottom:18px}
.footer p{font-size:14px;line-height:1.9;color:#8F89A0;margin:0 0 12px}
.foot-title{font-family:var(--font-body);font-size:14px;font-weight:700;color:#fff;letter-spacing:.06em;margin-bottom:16px}
.foot-links{display:flex;flex-direction:column;gap:11px}
.foot-links a{font-size:14px;color:#A9A3B8;transition:color .18s ease}
.foot-links a:hover{color:var(--teal)}
.foot-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  font-size:13px;color:#736D85;font-family:var(--font-mono);
}

/* 移动端底部下载条 */
.mobile-bar{display:none}

@media (max-width:1199px){
  .article-grid{grid-template-columns:minmax(0,1fr) 268px;gap:36px}
}
@media (max-width:1023px){
  .dock-nav{display:none}
  .burger{display:grid}
  .article-grid{grid-template-columns:minmax(0,1fr)}
  .toc{display:none}
  .toc-mobile{
    display:block;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
    padding:16px 18px;margin-bottom:28px;box-shadow:var(--sh-1);
  }
  .toc-mobile summary{font-size:15px;font-weight:700;color:var(--brand-deep);cursor:pointer;list-style:none}
  .toc-mobile summary::-webkit-details-marker{display:none}
  .toc-mobile ul{list-style:none;margin:12px 0 0;padding:0}
  .toc-mobile a{display:block;font-size:14.5px;color:var(--text-2);padding:9px 0;border-bottom:1px solid var(--line-2)}
  .rel-grid{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr;gap:34px}
}
@media (max-width:767px){
  body{font-size:16px}
  .container{padding:0 16px}
  .dock{top:10px;width:94vw;padding:8px 10px 8px 14px;gap:10px}
  .dock.shrunk{width:94vw}
  .dock-nav{display:none}
  .dock-actions .btn-primary{display:none}
  .crumb-wrap{padding-top:92px}
  .article-shell{padding-top:18px}
  .article-grid{padding-top:30px;gap:0}
  .pager{grid-template-columns:1fr}
  .rel-grid{grid-template-columns:1fr}
  .cta-band{padding:40px 22px;border-radius:var(--r-card)}
  .dl-btn{width:100%}
  .footer{margin-top:64px;padding:52px 0 96px}
  .foot-grid{grid-template-columns:1fr;gap:30px}
  .mobile-bar{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:95;
    padding:10px 16px calc(10px + env(safe-area-inset-bottom));
    background:rgba(255,255,255,.94);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
    border-top:1px solid var(--line);gap:12px;align-items:center;
  }
  .mobile-bar .mb-info{font-size:12px;color:var(--text-3);font-family:var(--font-mono);line-height:1.5}
  .mobile-bar .mb-info b{display:block;color:var(--text);font-weight:600;font-size:13px}
  .mobile-bar .btn{flex:1;justify-content:center}
}
@media (max-width:420px){
  .article-head h1{font-size:26px}
  .cta-band h2{font-size:21px}
  .logo-text{font-size:15px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .card:hover,.pager a:hover,.dl-btn:hover,.btn-primary:hover{transform:none}
}

/* roulang page: category1 */
:root{
  --purple:#5B2E8C;
  --purple-dark:#4A2473;
  --purple-deep:#3A1D5C;
  --purple-soft:#F3EDFA;
  --purple-line:#DDD0F0;
  --cyan:#17C2A4;
  --cyan-hover:#12A98F;
  --cyan-soft:#E7F8F4;
  --gold:#E0A22B;
  --bg:#FAF8F5;
  --bg-2:#F3EFE9;
  --dark:#171420;
  --dark-2:#1F1A2E;
  --text:#1D1A24;
  --text-2:#575261;
  --text-3:#8A8494;
  --border:#E7E1D8;
  --divider:#EFEAE2;
  --ok:#1F9D6B;
  --err:#D64545;
  --radius-lg:24px;
  --radius-md:18px;
  --radius-img:14px;
  --radius-input:12px;
  --radius-badge:6px;
  --pill:999px;
  --sh-1:0 1px 2px rgba(29,26,36,.06),0 2px 8px rgba(29,26,36,.05);
  --sh-2:0 8px 24px -8px rgba(91,46,140,.18);
  --sh-dock:0 12px 40px -12px rgba(29,26,36,.22);
  --font-title:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --font-body:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-mono:ui-monospace,Consolas,"SFMono-Regular",Menlo,monospace;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-body);
  font-size:16.5px;
  line-height:1.9;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius-img);}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;cursor:pointer;border:none;background:none;}
h1,h2,h3,h4{font-family:var(--font-title);font-weight:700;letter-spacing:.02em;line-height:1.28;margin:0;color:var(--text);}
h1{font-size:clamp(30px,4.4vw,52px);}
h2{font-size:clamp(24px,3vw,36px);}
h3{font-size:21px;}
h4{font-size:17.5px;}
p{margin:0 0 1.1em;}
ul,ol{margin:0 0 1.1em;padding-left:1.2em;}
li{margin-bottom:.5em;}
:focus-visible{outline:2px solid var(--purple);outline-offset:2px;border-radius:4px;}
.container{max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:96px 0;}
.section-alt{background:var(--bg-2);}
.section-head{max-width:760px;margin-bottom:48px;}
.section-head h2{margin-bottom:14px;}
.section-head p{color:var(--text-2);margin:0;}
.eyebrow{
  display:inline-block;font-size:13px;letter-spacing:.14em;color:var(--purple);
  background:var(--purple-soft);border-radius:var(--radius-badge);
  padding:5px 12px;margin-bottom:16px;font-weight:600;
}

/* ===== 浮动 Dock 导航 ===== */
.dock{
  position:fixed;top:18px;left:50%;transform:translateX(-50%);
  width:min(1180px,92vw);
  display:flex;align-items:center;gap:16px;
  padding:10px 14px 10px 18px;
  background:rgba(255,255,255,.72);
  -webkit-backdrop-filter:blur(14px) saturate(150%);
  backdrop-filter:blur(14px) saturate(150%);
  border:1px solid rgba(255,255,255,.72);
  box-shadow:var(--sh-dock);
  border-radius:var(--pill);
  z-index:200;
  transition:width .3s ease,box-shadow .3s ease;
}
.dock.is-scrolled{width:min(1132px,88vw);box-shadow:0 16px 44px -14px rgba(29,26,36,.28);}
.dock-logo{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:36px;height:36px;border-radius:11px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--purple),var(--purple-deep));color:#fff;
}
.logo-mark svg{width:20px;height:20px;}
.logo-text{font-family:var(--font-title);font-weight:700;font-size:17px;color:var(--text);white-space:nowrap;}
.dock-nav{display:flex;align-items:center;gap:2px;flex:1;justify-content:center;}
.dock-nav a{
  padding:8px 13px;border-radius:var(--pill);font-size:14.5px;color:var(--text-2);
  transition:background .18s ease,color .18s ease;white-space:nowrap;
}
.dock-nav a:hover{background:var(--purple-soft);color:var(--purple);}
.dock-nav a.active{background:var(--purple-soft);color:var(--purple);font-weight:600;box-shadow:inset 0 -2px 0 var(--purple);}
.dock-actions{display:flex;align-items:center;gap:8px;flex-shrink:0;}
.icon-btn{
  width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  color:var(--text-2);transition:background .18s ease,color .18s ease;
}
.icon-btn svg{width:19px;height:19px;}
.icon-btn:hover{background:var(--purple-soft);color:var(--purple);}
.burger{display:none;width:40px;height:40px;border-radius:50%;align-items:center;justify-content:center;color:var(--purple);}
.burger svg{width:22px;height:22px;}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--pill);font-size:15px;font-weight:600;
  padding:12px 24px;min-height:44px;
  transition:background .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--cyan);color:#fff;box-shadow:0 6px 18px -8px rgba(23,194,164,.7);}
.btn-primary:hover{background:var(--cyan-hover);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{border:1.5px solid var(--purple);color:var(--purple);background:transparent;}
.btn-ghost:hover{background:var(--purple-soft);}
.btn-outline-light{border:1.5px solid rgba(255,255,255,.55);color:#fff;background:rgba(255,255,255,.06);}
.btn-outline-light:hover{background:rgba(255,255,255,.16);}
.btn-text{color:var(--purple);padding:12px 6px;font-weight:600;}
.btn-text::after{content:"→";transition:transform .2s ease;}
.btn-text:hover::after{transform:translateX(4px);}
.btn-sm{padding:9px 18px;font-size:14px;min-height:40px;}
.btn-block{width:100%;}

/* ===== 面包屑 ===== */
.crumb-wrap{padding-top:112px;}
.breadcrumb{font-size:13px;color:var(--text-3);display:flex;flex-wrap:wrap;gap:6px;align-items:center;}
.breadcrumb a{color:var(--text-3);}
.breadcrumb a:hover{color:var(--purple);}
.breadcrumb .sep{color:#C9C4CE;}
.breadcrumb .current{color:var(--purple);font-weight:600;}

/* ===== 分类首屏 ===== */
.cat-hero{position:relative;overflow:hidden;border-radius:0 0 var(--radius-lg) var(--radius-lg);}
.cat-hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;border-radius:0;}
.cat-hero-mask{
  position:absolute;inset:0;
  background:
    linear-gradient(135deg,rgba(58,29,92,.88) 0%,rgba(23,20,32,.78) 100%),
    linear-gradient(135deg,rgba(91,46,140,.35),rgba(23,194,164,.28));
}
.cat-hero-inner{position:relative;z-index:2;padding:170px 0 72px;max-width:840px;}
.cat-hero h1{color:#fff;margin:18px 0 20px;}
.cat-hero-lead{color:rgba(255,255,255,.82);font-size:17px;max-width:660px;margin:0 0 30px;}
.badge{
  display:inline-flex;align-items:center;gap:7px;font-size:13px;font-weight:600;
  padding:5px 12px;border-radius:var(--radius-badge);line-height:1.6;
}
.badge-gold{background:rgba(224,162,43,.16);color:#F0C468;border:1px solid rgba(224,162,43,.38);}
.badge-purple{background:var(--purple-soft);color:var(--purple);}
.badge-cyan{background:var(--cyan-soft);color:#0F8B76;}
.badge-line{background:#fff;border:1px solid var(--border);color:var(--text-2);}
.hero-btns{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:28px;}
.hero-metrics{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;
  padding-top:26px;border-top:1px solid rgba(255,255,255,.18);
}
.hero-metrics .m-num{font-family:var(--font-mono);font-size:20px;font-weight:700;color:#fff;letter-spacing:.01em;}
.hero-metrics .m-label{font-size:13px;color:rgba(255,255,255,.68);}

/* ===== 时间线步骤 ===== */
.step-layout{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:56px;align-items:start;}
.timeline{position:relative;}
.tl-item{position:relative;display:grid;grid-template-columns:56px minmax(0,1fr);gap:22px;padding-bottom:34px;}
.tl-item::before{content:"";position:absolute;left:27px;top:60px;bottom:6px;width:2px;background:var(--purple-line);}
.tl-item:last-child{padding-bottom:0;}
.tl-item:last-child::before{display:none;}
.tl-num{
  width:56px;height:56px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  background:#fff;border:2px solid var(--gold);color:var(--gold);
  font-family:var(--font-mono);font-weight:700;font-size:18px;box-shadow:var(--sh-1);
}
.tl-body{padding-top:6px;}
.tl-body h3{margin-bottom:8px;}
.tl-body p{color:var(--text-2);margin:0;max-width:640px;}
.tl-note{
  display:inline-block;margin-top:12px;font-size:13px;color:var(--purple);
  background:var(--purple-soft);border-radius:var(--radius-badge);padding:4px 10px;
  font-family:var(--font-mono);
}

/* ===== 规格卡 ===== */
.spec-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-md);
  box-shadow:var(--sh-1);padding:24px;position:sticky;top:110px;
}
.spec-card h3{font-size:19px;margin-bottom:6px;}
.spec-card .spec-sub{font-size:13.5px;color:var(--text-3);margin:0 0 16px;}
.spec-row{display:flex;justify-content:space-between;gap:16px;padding:11px 0;border-bottom:1px dashed var(--divider);font-size:14.5px;}
.spec-row:last-child{border-bottom:none;}
.spec-key{color:var(--text-2);}
.spec-val{font-family:var(--font-mono);color:var(--text);}
.spec-foot{margin-top:18px;padding-top:16px;border-top:1px solid var(--divider);}
.spec-foot .btn{width:100%;}

/* ===== 说明图文 ===== */
.info-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.info-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-md);
  box-shadow:var(--sh-1);padding:26px;transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.info-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--purple-line);}
.info-card h3{display:flex;align-items:center;gap:10px;font-size:19px;margin-bottom:10px;}
.info-card h3 svg{width:22px;height:22px;color:var(--cyan);flex-shrink:0;}
.info-card p{color:var(--text-2);margin:0;font-size:15.5px;}
.thumb{position:relative;aspect-ratio:16/10;overflow:hidden;border-radius:var(--radius-img);background:rgba(91,46,140,.12);margin-bottom:18px;}
.thumb img{width:100%;height:100%;object-fit:cover;border-radius:var(--radius-img);}

/* ===== 下载按钮组 ===== */
.download-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;}
.dl-btn{
  display:flex;align-items:center;gap:14px;text-align:left;
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-md);
  padding:18px 20px;box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease,background .2s ease;
}
.dl-btn:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--cyan);}
.dl-icon{width:44px;height:44px;border-radius:12px;background:var(--cyan-soft);color:#0F8B76;display:flex;align-items:center;justify-content:center;flex-shrink:0;}
.dl-icon svg{width:22px;height:22px;}
.dl-text{display:flex;flex-direction:column;line-height:1.5;}
.dl-name{font-size:16px;font-weight:600;}
.dl-meta{font-size:13px;color:var(--text-3);font-family:var(--font-mono);}
.dl-arrow{margin-left:auto;color:var(--purple);transition:transform .2s ease;}
.dl-btn:hover .dl-arrow{transform:translateX(4px);}
.dl-arrow svg{width:18px;height:18px;}

/* ===== FAQ 手风琴 ===== */
.faq-list{max-width:860px;}
.faq-item{border-bottom:1px solid var(--divider);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  text-align:left;padding:20px 0 20px 18px;font-size:18px;font-weight:700;
  font-family:var(--font-title);color:var(--text);border-left:2px solid var(--purple);
  transition:border-color .2s ease,color .2s ease;
}
.faq-item.open .faq-q{border-left-color:var(--cyan);color:var(--purple-dark);}
.faq-q:hover{color:var(--purple);}
.faq-arrow{flex-shrink:0;color:var(--text-3);transition:transform .2s ease;}
.faq-arrow svg{width:18px;height:18px;}
.faq-item.open .faq-arrow{transform:rotate(180deg);color:var(--cyan);}
.faq-a{display:none;padding:0 20px 22px 20px;color:var(--text-2);line-height:1.85;font-size:15.5px;max-width:740px;}
.faq-item.open .faq-a{display:block;}

/* ===== 相关分类 ===== */
.rel-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;}
.rel-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--border);
  border-radius:var(--radius-md);box-shadow:var(--sh-1);overflow:hidden;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--purple-line);}
.rel-card .thumb{margin:0;border-radius:0;aspect-ratio:16/10;}
.rel-body{padding:20px;display:flex;flex-direction:column;gap:8px;flex:1;}
.rel-body h3{font-size:17.5px;}
.rel-body p{font-size:14.5px;color:var(--text-2);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.rel-link{margin-top:auto;color:var(--purple);font-size:14px;font-weight:600;}
.rel-link::after{content:"→";margin-left:6px;}

/* ===== 深色 CTA ===== */
.cta-dark{
  background:var(--dark);
  background-image:linear-gradient(135deg,rgba(91,46,140,.35),rgba(23,194,164,.28));
  padding:88px 0;text-align:center;color:#fff;
}
.cta-dark h2{color:#fff;max-width:720px;margin:0 auto 16px;}
.cta-dark p{color:rgba(255,255,255,.74);max-width:620px;margin:0 auto 32px;}
.cta-btns{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-bottom:26px;}
.cta-meta{display:flex;flex-wrap:wrap;gap:20px;justify-content:center;font-family:var(--font-mono);font-size:13px;color:rgba(255,255,255,.6);}

/* ===== 页脚 ===== */
.footer{background:var(--dark);color:rgba(255,255,255,.72);padding:72px 0 32px;font-size:14px;}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;color:#fff;font-family:var(--font-title);font-weight:700;font-size:17px;}
.foot-brand .logo-mark{width:32px;height:32px;border-radius:10px;}
.foot-title{color:#fff;font-size:15px;margin-bottom:16px;font-family:var(--font-body);font-weight:600;}
.foot-links{display:flex;flex-direction:column;gap:10px;}
.foot-links a{color:rgba(255,255,255,.72);transition:color .18s ease;}
.foot-links a:hover{color:var(--cyan);}
.footer p{margin:0 0 12px;line-height:1.85;}
.foot-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ===== 移动端底部下载条 ===== */
.mobile-bar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:190;
  background:rgba(255,255,255,.92);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  border-top:1px solid var(--border);
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  align-items:center;justify-content:space-between;gap:12px;
}
.mobile-bar span{font-size:13.5px;color:var(--text-2);}

/* ===== 抽屉 ===== */
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,84vw);z-index:300;
  background:#fff;box-shadow:-16px 0 40px -20px rgba(29,26,36,.4);
  transform:translateX(105%);transition:transform .3s ease;
  padding:26px 20px;display:flex;flex-direction:column;gap:6px;
}
.drawer.open{transform:translateX(0);}
.drawer a{font-size:18px;line-height:56px;padding:0 12px;border-radius:12px;color:var(--text);}
.drawer a.active{background:var(--purple-soft);color:var(--purple);font-weight:600;}
.drawer a:hover{background:var(--purple-soft);}
.drawer-close{align-self:flex-end;width:44px;height:44px;display:flex;align-items:center;justify-content:center;color:var(--text-2);}
.drawer-close svg{width:22px;height:22px;}
.mask-layer{position:fixed;inset:0;background:rgba(23,20,32,.42);z-index:290;display:none;}
.mask-layer.show{display:block;}

/* ===== 响应式 ===== */
@media (max-width:1199px){
  .step-layout{grid-template-columns:minmax(0,1fr) 300px;gap:36px;}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .foot-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px;}
}
@media (max-width:1023px){
  .dock-nav{display:none;}
  .burger{display:flex;}
  .section{padding:72px 0;}
  .step-layout{grid-template-columns:minmax(0,1fr);}
  .spec-card{position:static;}
  .cat-hero-inner{padding:150px 0 60px;}
  .hero-metrics{grid-template-columns:repeat(2,minmax(0,1fr));}
  .info-grid{grid-template-columns:minmax(0,1fr);}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .container{padding:0 16px;}
  .section{padding:56px 0;}
  .crumb-wrap{padding-top:96px;}
  .dock{top:12px;width:94vw;padding:8px 10px 8px 14px;}
  .dock-actions .btn-primary{display:none;}
  .logo-text{font-size:15.5px;}
  .cat-hero{border-radius:0;}
  .cat-hero-inner{padding:130px 0 52px;}
  .hero-btns .btn{width:100%;}
  .download-grid{grid-template-columns:minmax(0,1fr);}
  .rel-grid{grid-template-columns:minmax(0,1fr);}
  .hero-metrics{gap:14px;}
  .foot-grid{grid-template-columns:1fr;}
  .foot-bottom{flex-direction:column;gap:8px;}
  .mobile-bar{display:flex;}
  body{padding-bottom:76px;}
  .tl-item{grid-template-columns:46px minmax(0,1fr);gap:16px;}
  .tl-num{width:46px;height:46px;font-size:16px;}
  .tl-item::before{left:22px;top:50px;}
}
@media (max-width:420px){
  .cat-hero-inner{padding:118px 0 44px;}
  .hero-metrics .m-num{font-size:17px;}
  .faq-q{font-size:16.5px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important;}
}

/* roulang page: category2 */
/* ============ 设计变量 ============ */
:root{
  --c-primary:#5B2E8C;
  --c-primary-dark:#4A2473;
  --c-primary-deep:#3A1D5C;
  --c-primary-soft:#F3EDFA;
  --c-primary-line:#DDD0F0;
  --c-accent:#17C2A4;
  --c-accent-hover:#12A98F;
  --c-accent-soft:#E7F8F4;
  --c-gold:#E0A22B;
  --bg-page:#FAF8F5;
  --bg-alt:#F3EFE9;
  --bg-dark:#171420;
  --bg-dark-2:#1F1A2E;
  --t-main:#1D1A24;
  --t-sub:#575261;
  --t-weak:#8A8494;
  --c-border:#E7E1D8;
  --c-divider:#EFEAE2;
  --c-success:#1F9D6B;
  --c-warn:#E0A22B;
  --c-error:#D64545;
  --c-disabled:#C9C4CE;
  --r-pill:999px;
  --r-block:24px;
  --r-card:18px;
  --r-img:14px;
  --r-input:12px;
  --r-badge:6px;
  --sh-1:0 1px 2px rgba(29,26,36,.06), 0 2px 8px rgba(29,26,36,.05);
  --sh-2:0 8px 24px -8px rgba(91,46,140,.18);
  --sh-dock:0 12px 40px -12px rgba(29,26,36,.22);
  --f-title:"Noto Serif SC","Source Han Serif SC","Songti SC",SimSun,serif;
  --f-body:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --f-mono:ui-monospace,SFMono-Regular,Consolas,"Courier New",monospace;
  --pad-sec:96px;
  --gutter:24px;
}

/* ============ 基础 reset ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--f-body);
  font-size:16.5px;
  line-height:1.9;
  color:var(--t-main);
  background:var(--bg-page);
  -webkit-font-smoothing:antialiased;
  padding-top:96px;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input,textarea{font:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-family:var(--f-title);font-weight:700;letter-spacing:.02em;line-height:1.28;color:var(--t-main);}
p{margin:0 0 1.15em;}
p:last-child{margin-bottom:0;}
svg{display:block;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px;}

/* ============ 容器与通用 ============ */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 var(--gutter);}
.section{padding:var(--pad-sec) 0;}
.section-alt{background:var(--bg-alt);}
.section-tight{padding:64px 0;}
.sec-head{max-width:760px;margin-bottom:48px;}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--f-mono);font-size:13px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--c-primary);
  background:var(--c-primary-soft);border:1px solid var(--c-primary-line);
  border-radius:var(--r-pill);padding:5px 14px;margin-bottom:18px;
}
.sec-title{font-size:clamp(24px,3vw,36px);margin-bottom:16px;}
.sec-desc{color:var(--t-sub);font-size:16.5px;max-width:720px;}
.mono{font-family:var(--f-mono);font-variant-numeric:tabular-nums;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 24px;border-radius:var(--r-pill);
  font-size:16px;font-weight:600;line-height:1;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
  border:1.5px solid transparent;white-space:nowrap;
}
.btn-primary{background:var(--c-accent);color:#fff;box-shadow:0 6px 18px -8px rgba(23,194,164,.7);}
.btn-primary:hover{background:var(--c-accent-hover);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);}
.btn-outline{border-color:var(--c-primary);color:var(--c-primary);background:transparent;}
.btn-outline:hover{background:var(--c-primary-soft);}
.btn-ghost{color:var(--c-primary);padding:0 10px;font-weight:600;}
.btn-ghost:hover{color:var(--c-primary-dark);text-decoration:underline;text-underline-offset:4px;}
.btn-sm{min-height:40px;padding:0 18px;font-size:15px;}
.btn[disabled],.btn.is-disabled{background:var(--c-disabled);color:#fff;box-shadow:none;cursor:not-allowed;transform:none;}
.btn.loading .spin{display:inline-block;}
.spin{display:none;width:16px;height:16px;border-radius:50%;border:2px solid rgba(255,255,255,.5);border-top-color:#fff;animation:spin .8s linear infinite;}
@keyframes spin{to{transform:rotate(360deg);}}

/* ============ 浮动 Dock 导航 ============ */
.dock{
  position:fixed;top:18px;left:50%;transform:translateX(-50%);
  z-index:100;
  width:min(1180px,92vw);
  display:flex;align-items:center;gap:18px;
  padding:10px 14px 10px 18px;
  border-radius:var(--r-pill);
  background:rgba(255,255,255,.78);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border:1px solid rgba(255,255,255,.75);
  box-shadow:var(--sh-dock);
  transition:width .3s ease,box-shadow .3s ease,background-color .3s ease;
}
.dock.is-scrolled{width:min(1130px,88vw);box-shadow:0 16px 44px -14px rgba(29,26,36,.3);background:rgba(255,255,255,.88);}
.dock-logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:11px;color:#fff;
  background:linear-gradient(135deg,var(--c-primary),var(--c-accent));
  box-shadow:0 6px 14px -8px rgba(91,46,140,.8);
}
.logo-mark svg{width:19px;height:19px;}
.logo-text{font-family:var(--f-title);font-size:18px;font-weight:700;letter-spacing:.02em;color:var(--t-main);white-space:nowrap;}
.dock-nav{display:flex;align-items:center;gap:2px;margin-left:auto;}
.dock-nav a{
  position:relative;padding:9px 13px;border-radius:var(--r-pill);
  font-size:15px;font-weight:500;color:var(--t-sub);white-space:nowrap;
  transition:background-color .2s ease,color .2s ease;
}
.dock-nav a:hover{background:var(--c-primary-soft);color:var(--c-primary);}
.dock-nav a.active{color:var(--c-primary);font-weight:600;background:var(--c-primary-soft);}
.dock-nav a.active::after{
  content:"";position:absolute;left:50%;bottom:2px;transform:translateX(-50%);
  width:22px;height:2px;border-radius:2px;background:var(--c-primary);
}
.dock-actions{display:flex;align-items:center;gap:8px;flex:0 0 auto;}
.icon-btn{
  display:inline-flex;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:var(--r-pill);
  color:var(--t-sub);border:1px solid var(--c-border);background:#fff;
  transition:color .2s ease,border-color .2s ease,background-color .2s ease;
}
.icon-btn svg{width:19px;height:19px;}
.icon-btn:hover{color:var(--c-primary);border-color:var(--c-primary-line);background:var(--c-primary-soft);}
.burger{display:none;width:42px;height:42px;border-radius:var(--r-pill);align-items:center;justify-content:center;color:var(--t-main);border:1px solid var(--c-border);background:#fff;}
.burger svg{width:20px;height:20px;}

/* 抽屉 */
.drawer{
  position:fixed;top:0;right:0;z-index:120;
  width:min(320px,86vw);height:100%;
  background:#fff;box-shadow:-20px 0 50px -20px rgba(29,26,36,.35);
  transform:translateX(105%);transition:transform .3s ease;
  padding:24px;display:flex;flex-direction:column;gap:6px;
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px;}
.drawer-close{width:40px;height:40px;border-radius:var(--r-pill);border:1px solid var(--c-border);display:flex;align-items:center;justify-content:center;}
.drawer-close svg{width:18px;height:18px;}
.drawer a.drawer-link{
  font-size:18px;line-height:56px;padding:0 14px;border-radius:14px;color:var(--t-main);
  transition:background-color .2s ease,color .2s ease;
}
.drawer a.drawer-link:hover,.drawer a.drawer-link.active{background:var(--c-primary-soft);color:var(--c-primary);}
.drawer .btn{margin-top:auto;}
.scrim{
  position:fixed;inset:0;z-index:110;background:rgba(29,26,36,.42);
  opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s ease;
}
.scrim.open{opacity:1;visibility:visible;}

/* ============ 面包屑 ============ */
.crumb{font-size:13px;color:var(--t-weak);padding-top:10px;margin-bottom:8px;}
.crumb a{color:var(--t-weak);}
.crumb a:hover{color:var(--c-primary);}
.crumb .sep{margin:0 8px;color:var(--c-divider);}
.crumb .cur{color:var(--c-primary);font-weight:600;}

/* ============ Hero ============ */
.hero{padding:36px 0 72px;}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.hero-badge{
  display:inline-flex;align-items:center;gap:10px;
  padding:6px 14px;border-radius:var(--r-pill);
  background:#fff;border:1px solid var(--c-primary-line);
  font-size:13.5px;color:var(--t-sub);margin-bottom:22px;
}
.hero-badge .dot{width:8px;height:8px;border-radius:50%;background:var(--c-accent);box-shadow:0 0 0 4px rgba(23,194,164,.18);}
.hero h1{font-size:clamp(30px,4.4vw,52px);margin-bottom:20px;}
.hero-sub{font-size:17.5px;color:var(--t-sub);max-width:620px;margin-bottom:30px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:28px;}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:10px 26px;
  padding-top:22px;border-top:1px solid var(--c-divider);
  font-family:var(--f-mono);font-size:13.5px;color:var(--t-weak);
}
.hero-meta span{display:inline-flex;align-items:center;gap:7px;}
.hero-meta i{width:6px;height:6px;border-radius:50%;background:var(--c-primary-line);display:inline-block;}
.hero-visual{position:relative;border-radius:var(--r-block);overflow:hidden;box-shadow:var(--sh-2);aspect-ratio:16/10;background:var(--c-primary-soft);}
.hero-visual img{width:100%;height:100%;object-fit:cover;}
.hero-visual::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(91,46,140,.34),rgba(23,194,164,.22));
}
.hero-visual .dots{
  position:absolute;inset:0;opacity:.5;
  background-image:radial-gradient(rgba(255,255,255,.55) 1px,transparent 1px);
  background-size:16px 16px;
}

/* ============ 指标条 ============ */
.metrics{background:#fff;border-top:1px solid var(--c-divider);border-bottom:1px solid var(--c-divider);}
.metrics-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:34px 0;}
.metric{text-align:center;padding:0 8px;border-right:1px dashed var(--c-divider);}
.metric:last-child{border-right:0;}
.metric b{display:block;font-family:var(--f-mono);font-size:clamp(22px,2.4vw,30px);color:var(--c-primary);font-weight:700;letter-spacing:-.01em;}
.metric span{display:block;font-size:13.5px;color:var(--t-weak);margin-top:4px;}

/* ============ Z 字图文 ============ */
.zrow{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;padding:56px 0;border-bottom:1px solid var(--c-divider);}
.zrow:last-child{border-bottom:0;padding-bottom:0;}
.zrow:first-child{padding-top:0;}
.zrow.reverse .z-media{order:2;}
.zrow.reverse .z-body{order:1;}
.z-media{border-radius:var(--r-card);overflow:hidden;background:var(--c-primary-soft);aspect-ratio:16/10;box-shadow:var(--sh-2);}
.z-media img{width:100%;height:100%;object-fit:cover;}
.z-body{max-width:520px;}
.z-body h3{font-size:22px;margin:14px 0 14px;}
.z-body p{color:var(--t-sub);font-size:16.5px;max-width:40em;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 11px;border-radius:var(--r-badge);
  font-size:13px;font-weight:600;line-height:1.7;
  background:var(--c-primary-soft);color:var(--c-primary-dark);
}
.tag.cyan{background:var(--c-accent-soft);color:#0E7F6B;}
.tag.gold{background:#FBF2DE;color:#8A6212;}
.checks{margin-top:18px;display:grid;gap:10px;}
.checks li{display:flex;gap:10px;align-items:flex-start;font-size:15.5px;color:var(--t-sub);}
.checks svg{flex:0 0 auto;width:19px;height:19px;margin-top:5px;color:var(--c-accent);}

/* ============ 适用场景 ============ */
.scene-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.scene-card{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--sh-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.scene-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--c-primary-line);}
.scene-card h3{font-size:19px;margin-bottom:10px;}
.scene-card p{color:var(--t-sub);font-size:15.5px;margin:0;}

/* ============ 流程时间线 ============ */
.timeline{position:relative;margin-top:8px;padding-left:34px;}
.timeline::before{content:"";position:absolute;left:11px;top:8px;bottom:8px;width:2px;background:var(--c-primary-line);border-radius:2px;}
.tl-item{position:relative;padding:0 0 30px;}
.tl-item:last-child{padding-bottom:0;}
.tl-item .num{
  position:absolute;left:-34px;top:0;
  width:24px;height:24px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:#fff;border:2px solid var(--c-gold);color:#8A6212;
  font-family:var(--f-mono);font-size:12.5px;font-weight:700;
}
.tl-item h4{font-size:17.5px;margin-bottom:6px;}
.tl-item p{color:var(--t-sub);font-size:15.5px;margin:0;}

/* ============ 相关分类卡 ============ */
.rel-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.rel-card{
  display:flex;flex-direction:column;
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--c-primary-line);}
.rel-card .thumb{aspect-ratio:16/10;overflow:hidden;background:var(--c-primary-soft);}
.rel-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.rel-card:hover .thumb img{transform:scale(1.04);}
.rel-card .body{padding:20px 22px 24px;}
.rel-card h3{font-size:17.5px;margin-bottom:8px;}
.rel-card p{font-size:14.5px;color:var(--t-sub);margin:0 0 14px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.rel-link{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--c-primary);}
.rel-link svg{width:15px;height:15px;transition:transform .2s ease;}
.rel-card:hover .rel-link svg{transform:translateX(3px);}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px;margin:0 auto;}
.faq-item{background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);margin-bottom:14px;overflow:hidden;box-shadow:var(--sh-1);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;text-align:left;font-size:18px;font-weight:700;color:var(--t-main);
  border-left:2px solid var(--c-primary);transition:color .2s ease,border-color .2s ease;
}
.faq-q:hover{color:var(--c-primary);}
.faq-item.open .faq-q{border-left-color:var(--c-accent);color:var(--c-primary-dark);}
.faq-q .arrow{flex:0 0 auto;width:22px;height:22px;color:var(--t-weak);transition:transform .2s ease,color .2s ease;}
.faq-item.open .faq-q .arrow{transform:rotate(180deg);color:var(--c-accent);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;}
.faq-a-inner{padding:0 24px 22px;color:var(--t-sub);font-size:15.8px;line-height:1.85;}

/* ============ 底部 CTA ============ */
.dl-cta{
  position:relative;overflow:hidden;
  background:var(--bg-dark);color:#fff;border-radius:var(--r-block);
  padding:64px 40px;text-align:center;
}
.dl-cta::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(91,46,140,.35),rgba(23,194,164,.32));
}
.dl-cta>*{position:relative;z-index:1;}
.dl-cta h2{color:#fff;font-size:clamp(24px,3vw,36px);margin-bottom:16px;}
.dl-cta p{color:rgba(255,255,255,.78);max-width:660px;margin:0 auto 30px;font-size:16.5px;}
.dl-btns{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-bottom:28px;}
.dl-btn{
  display:flex;align-items:center;gap:12px;
  padding:12px 22px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.24);
  color:#fff;transition:background-color .2s ease,transform .2s ease,border-color .2s ease;
  text-align:left;
}
.dl-btn:hover{background:rgba(255,255,255,.18);transform:translateY(-1px);border-color:rgba(255,255,255,.4);}
.dl-btn svg{width:22px;height:22px;flex:0 0 auto;}
.dl-btn .t1{display:block;font-size:15px;font-weight:600;line-height:1.3;}
.dl-btn .t2{display:block;font-family:var(--f-mono);font-size:12px;color:rgba(255,255,255,.66);line-height:1.5;}
.dl-spec{display:flex;flex-wrap:wrap;justify-content:center;gap:10px 24px;font-family:var(--f-mono);font-size:13px;color:rgba(255,255,255,.7);}

/* ============ 页脚 ============ */
.footer{background:var(--bg-dark);color:rgba(255,255,255,.72);padding:72px 0 26px;margin-top:96px;font-size:14px;}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.foot-brand span:last-child{font-family:var(--f-title);font-size:17px;font-weight:700;color:#fff;}
.footer p{color:rgba(255,255,255,.6);line-height:1.85;font-size:14px;}
.foot-title{font-size:15px;color:#fff;margin-bottom:16px;font-weight:700;}
.foot-links{display:flex;flex-direction:column;gap:11px;}
.foot-links a{color:rgba(255,255,255,.62);font-size:14px;transition:color .2s ease;}
.foot-links a:hover{color:var(--c-accent);}
.foot-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.45);
}
.foot-bottom span:last-child{font-family:var(--f-mono);}

/* ============ 移动端底部下载条 ============ */
.mobile-bar{display:none;}
.mobile-bar a{
  display:flex;align-items:center;justify-content:center;gap:8px;
  background:var(--c-accent);color:#fff;font-weight:600;font-size:16px;
  padding:14px 16px;border-radius:var(--r-pill);
}
.mobile-bar a svg{width:18px;height:18px;}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .hero-grid{gap:40px;}
  .zrow{gap:44px;}
}
@media (max-width:1023px){
  body{padding-top:88px;}
  .dock{left:12px;right:12px;transform:none;width:auto;top:12px;}
  .dock.is-scrolled{width:auto;}
  .dock-nav{display:none;}
  .dock-actions{margin-left:auto;}
  .burger{display:inline-flex;}
  .dock-actions .btn{display:none;}
  .hero{padding:20px 0 56px;}
  .hero-grid{grid-template-columns:1fr;gap:34px;}
  .hero-visual{aspect-ratio:16/10;}
  .metrics-grid{grid-template-columns:repeat(2,1fr);gap:22px 12px;}
  .metric{border-right:0;border-bottom:1px dashed var(--c-divider);padding-bottom:18px;}
  .metric:nth-child(odd){border-right:1px dashed var(--c-divider);}
  .metric:nth-last-child(-n+2){border-bottom:0;padding-bottom:0;}
  .zrow{grid-template-columns:1fr;gap:26px;padding:44px 0;}
  .zrow.reverse .z-media{order:1;}
  .zrow.reverse .z-body{order:2;}
  .z-body{max-width:100%;}
  .rel-grid{grid-template-columns:repeat(2,1fr);}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .dl-cta{padding:52px 26px;}
  :root{--pad-sec:72px;}
}
@media (max-width:767px){
  :root{--pad-sec:56px;--gutter:16px;}
  body{font-size:16px;}
  .section{padding:var(--pad-sec) 0;}
  .scene-grid{grid-template-columns:1fr;}
  .rel-grid{grid-template-columns:1fr;}
  .hero-actions .btn{width:100%;}
  .dl-btns{flex-direction:column;}
  .dl-btn{width:100%;}
  .footer{margin-top:64px;padding-bottom:96px;}
  .foot-grid{grid-template-columns:1fr;}
  .mobile-bar{
    display:block;position:fixed;left:12px;right:12px;z-index:95;
    bottom:calc(12px + env(safe-area-inset-bottom,0px));
  }
  .faq-q{font-size:16.5px;padding:18px 18px;}
  .faq-a-inner{padding:0 18px 18px;}
  .timeline{padding-left:30px;}
  .tl-item .num{left:-30px;}
}
@media (max-width:420px){
  .logo-text{font-size:16px;}
  .hero h1{font-size:30px;}
  .metric b{font-size:22px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none!important;animation:none!important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category3 */
:root{
  --purple:#5B2E8C;--purple-dark:#4A2473;--purple-deep:#3A1D5C;--purple-light:#F3EDFA;--purple-line:#DDD0F0;
  --cyan:#17C2A4;--cyan-hover:#12A98F;--cyan-light:#E7F8F4;
  --gold:#E0A22B;
  --bg:#FAF8F5;--bg-alt:#F3EFE9;--dark:#171420;--dark-2:#1F1A2E;
  --text:#1D1A24;--text-2:#575261;--text-3:#8A8494;
  --border:#E7E1D8;--divider:#EFEAE2;
  --ok:#1F9D6B;--warn:#E0A22B;--err:#D64545;--disabled:#C9C4CE;
  --r-lg:24px;--r-card:18px;--r-img:14px;--r-input:12px;--r-badge:6px;
  --sh-1:0 1px 2px rgba(29,26,36,.06),0 2px 8px rgba(29,26,36,.05);
  --sh-2:0 8px 24px -8px rgba(91,46,140,.18);
  --sh-dock:0 12px 40px -12px rgba(29,26,36,.22);
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",SimSun,serif;
  --font-sans:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --mono:ui-monospace,SFMono-Regular,Consolas,"Courier New",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:var(--font-sans);font-size:16.5px;line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-family:var(--font-serif);font-weight:700;letter-spacing:.02em;line-height:1.28;color:var(--text)}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
:focus-visible{outline:2px solid var(--purple);outline-offset:2px;border-radius:6px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section--alt{background:var(--bg-alt)}
.section--tight{padding:72px 0}

/* ============ Dock ============ */
.dock{
  position:fixed;top:16px;left:50%;transform:translateX(-50%);
  width:min(1180px,92vw);z-index:120;
  display:flex;align-items:center;gap:16px;
  padding:10px 14px 10px 18px;border-radius:999px;
  background:rgba(255,255,255,.72);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border:1px solid rgba(255,255,255,.75);
  box-shadow:var(--sh-dock);
  transition:width .25s ease,box-shadow .25s ease,padding .25s ease;
}
.dock.scrolled{width:min(1132px,88vw);box-shadow:0 16px 44px -14px rgba(29,26,36,.3)}
.dock-logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;padding:4px 6px;border-radius:999px}
.logo-mark{
  width:34px;height:34px;border-radius:11px;flex:0 0 auto;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--purple),var(--purple-deep));color:#fff;
  box-shadow:0 6px 14px -6px rgba(91,46,140,.6);
}
.logo-mark svg{width:19px;height:19px}
.logo-text{font-family:var(--font-serif);font-weight:700;font-size:17px;letter-spacing:.02em;color:var(--purple-deep);white-space:nowrap}
.dock-nav{display:flex;align-items:center;gap:2px;margin-left:auto;flex-wrap:nowrap}
.dock-nav a{
  position:relative;display:inline-block;padding:8px 13px;border-radius:999px;
  font-size:15px;color:var(--text-2);white-space:nowrap;transition:background .18s ease,color .18s ease;
}
.dock-nav a:hover{background:var(--purple-light);color:var(--purple)}
.dock-nav a.active{color:var(--purple);font-weight:600;background:var(--purple-light)}
.dock-nav a.active::after{
  content:"";position:absolute;left:50%;bottom:2px;transform:translateX(-50%);
  width:16px;height:2px;border-radius:2px;background:var(--purple);
}
.dock-actions{display:flex;align-items:center;gap:8px;flex:0 0 auto}
.icon-btn{
  width:40px;height:40px;border-radius:999px;display:inline-flex;align-items:center;justify-content:center;
  color:var(--text-2);border:1px solid transparent;transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.icon-btn svg{width:19px;height:19px}
.icon-btn:hover{background:var(--purple-light);color:var(--purple)}
.burger{display:none;width:44px;height:44px;border-radius:999px;align-items:center;justify-content:center;color:var(--purple-deep)}
.burger svg{width:22px;height:22px}

/* ============ Buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;font-weight:600;font-size:15px;line-height:1;
  padding:15px 26px;min-height:48px;border:1.5px solid transparent;
  transition:transform .18s ease,background .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.btn svg{width:17px;height:17px}
.btn-primary{background:var(--cyan);color:#fff;box-shadow:0 8px 20px -10px rgba(23,194,164,.85)}
.btn-primary:hover{background:var(--cyan-hover);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-outline{border-color:var(--purple);color:var(--purple);background:transparent}
.btn-outline:hover{background:var(--purple-light)}
.btn-ghost{padding:15px 4px;color:var(--purple);min-height:48px}
.btn-ghost:hover{color:var(--purple-dark)}
.btn-sm{padding:11px 20px;min-height:40px;font-size:14px}
.btn:disabled,.btn[aria-disabled="true"]{filter:saturate(.4);color:var(--disabled);border-color:var(--border);background:#f2f0ee;cursor:not-allowed;box-shadow:none;transform:none}
.btn-row{display:flex;flex-wrap:wrap;gap:12px;align-items:center}

.badge{
  display:inline-flex;align-items:center;gap:6px;border-radius:var(--r-badge);
  padding:5px 10px;font-size:13px;font-weight:600;line-height:1.6;
}
.badge-purple{background:var(--purple-light);color:var(--purple)}
.badge-cyan{background:var(--cyan-light);color:#0E8C77}
.badge-gold{background:#FBF1DA;color:#8A6110}
.tag{
  display:inline-flex;align-items:center;gap:6px;padding:6px 12px;border-radius:999px;
  background:#fff;border:1px solid var(--border);font-size:13.5px;color:var(--text-2);
}

/* ============ Page shell ============ */
.page-main{padding-top:112px}
.crumbs{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);margin:24px 0 0;
}
.crumbs a{color:var(--text-3);transition:color .18s ease}
.crumbs a:hover{color:var(--purple)}
.crumbs .sep{color:#CFC9C0}
.crumbs .current{color:var(--purple);font-weight:600}

/* ============ Hero ============ */
.hero{padding:40px 0 88px}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.hero-copy>*+*{margin-top:20px}
.hero h1{font-size:clamp(30px,4.4vw,50px);line-height:1.2}
.hero h1 .hl{color:var(--purple)}
.hero-sub{font-size:17px;color:var(--text-2);line-height:1.9;max-width:560px}
.trust-row{display:flex;flex-wrap:wrap;gap:10px 22px;font-size:13.5px;color:var(--text-3);margin-top:26px}
.trust-row li{display:flex;align-items:center;gap:7px}
.trust-row .num{font-family:var(--mono);color:var(--text-2);font-weight:600}
.hero-visual{position:relative;border-radius:var(--r-lg);overflow:hidden;aspect-ratio:3/2;background:rgba(91,46,140,.12);box-shadow:var(--sh-2)}
.hero-visual img{width:100%;height:100%;object-fit:cover}
.hero-visual::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(91,46,140,.35),rgba(23,194,164,.26));
}
.hero-visual::before{
  content:"";position:absolute;inset:0;z-index:2;opacity:.35;
  background-image:radial-gradient(rgba(255,255,255,.7) 1px,transparent 1px);
  background-size:16px 16px;
}
.hero-float{
  position:absolute;left:18px;bottom:18px;z-index:3;
  background:rgba(255,255,255,.92);border-radius:14px;padding:12px 16px;
  box-shadow:var(--sh-1);display:flex;gap:14px;align-items:center;
}
.hero-float .k{font-size:12.5px;color:var(--text-3)}
.hero-float .v{font-family:var(--mono);font-size:15px;font-weight:600;color:var(--purple-deep)}

/* ============ Download buttons ============ */
.dl-list{display:flex;flex-wrap:wrap;gap:12px}
.dl-btn{
  display:flex;align-items:center;gap:12px;padding:12px 20px 12px 14px;min-height:56px;
  border-radius:999px;background:var(--cyan);color:#fff;border:1.5px solid var(--cyan);
  transition:background .18s ease,transform .18s ease,border-color .18s ease;
}
.dl-btn:hover{background:var(--cyan-hover);border-color:var(--cyan-hover);transform:translateY(-1px)}
.dl-btn:active{transform:translateY(0)}
.dl-ico{width:34px;height:34px;border-radius:10px;background:rgba(255,255,255,.2);display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto}
.dl-ico svg{width:18px;height:18px}
.dl-meta{display:flex;flex-direction:column;line-height:1.3;text-align:left}
.dl-meta strong{font-size:15px;font-weight:600}
.dl-meta small{font-family:var(--mono);font-size:12px;opacity:.85}
.dl-btn--outline{background:#fff;color:var(--purple);border-color:var(--purple-line)}
.dl-btn--outline:hover{background:var(--purple-light);border-color:var(--purple)}
.dl-btn--outline .dl-ico{background:var(--purple-light)}
.dl-btn--outline .dl-meta small{opacity:.7;color:var(--text-2)}

/* ============ Metrics ============ */
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.metric{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-1);
}
.metric .val{font-family:var(--mono);font-size:26px;font-weight:700;color:var(--purple-deep);line-height:1.2}
.metric .lab{font-size:13.5px;color:var(--text-3);margin-top:6px}

/* ============ Section heads ============ */
.sec-head{max-width:760px;margin-bottom:44px}
.sec-head h2{font-size:clamp(24px,3vw,34px)}
.sec-head p{color:var(--text-2);margin-top:14px;font-size:16.5px}
.sec-head--row{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;max-width:none}
.link-more{color:var(--purple);font-weight:600;font-size:14.5px;display:inline-flex;align-items:center;gap:6px}
.link-more svg{width:15px;height:15px;transition:transform .18s ease}
.link-more:hover svg{transform:translateX(3px)}

/* ============ Spec cards ============ */
.spec-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.spec-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--sh-1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.spec-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--purple-line)}
.spec-card h3{display:flex;align-items:center;gap:10px;font-size:20px;margin-bottom:6px}
.spec-card .spec-hint{font-size:13.5px;color:var(--text-3);margin-bottom:12px}
.spec-row{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:13px 0;border-bottom:1px dashed var(--divider);
}
.spec-row:last-child{border-bottom:0}
.spec-key{color:var(--text-2);font-size:15px}
.spec-val{font-family:var(--mono);font-size:13.5px;color:var(--text);display:flex;align-items:center;gap:8px;text-align:right}
.mark{width:22px;height:22px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto}
.mark svg{width:12px;height:12px}
.mark-ok{background:rgba(31,157,107,.14);color:var(--ok)}
.mark-no{background:rgba(214,69,69,.12);color:var(--err)}

/* ============ Compare ============ */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.compare-col{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);padding:26px;box-shadow:var(--sh-1);
}
.compare-col--rec{background:linear-gradient(180deg,var(--purple-light),#fff 60%);border-color:var(--purple-line);box-shadow:var(--sh-2)}
.compare-col h3{font-size:20px;margin-bottom:4px}
.compare-col .sub{font-size:13.5px;color:var(--text-3);margin-bottom:10px}
.kv{display:flex;justify-content:space-between;gap:16px;padding:12px 0;border-bottom:1px dashed var(--divider);font-size:15px}
.kv:last-child{border-bottom:0}
.kv span:first-child{color:var(--text-2)}
.kv span:last-child{font-family:var(--mono);font-size:13.5px;text-align:right}

/* ============ Compat list ============ */
.compat-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px 32px}
.compat-item{
  display:flex;align-items:center;gap:12px;padding:14px 16px;border-radius:var(--r-img);
  background:#fff;border:1px solid var(--border);transition:transform .18s ease,border-color .18s ease,background .18s ease;
}
.compat-item:hover{transform:translateY(-2px);border-color:var(--purple-line);background:#FDFCFF}
.compat-item .txt{display:flex;flex-direction:column;line-height:1.5}
.compat-item .txt strong{font-size:15px;font-weight:600}
.compat-item .txt small{font-size:13px;color:var(--text-3)}

/* ============ Z blocks ============ */
.z-block{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.z-block+.z-block{margin-top:72px}
.z-block.rev .z-media{order:2}
.z-media{border-radius:var(--r-img);overflow:hidden;aspect-ratio:16/10;background:rgba(91,46,140,.1);box-shadow:var(--sh-1)}
.z-media img{width:100%;height:100%;object-fit:cover}
.z-body h3{font-size:22px;margin-bottom:14px}
.z-body p{color:var(--text-2)}
.steps{margin-top:22px;counter-reset:step}
.steps li{
  counter-increment:step;position:relative;padding-left:44px;margin-bottom:14px;
}
.steps li::before{
  content:counter(step);position:absolute;left:0;top:2px;width:28px;height:28px;border-radius:9px;
  display:flex;align-items:center;justify-content:center;font-family:var(--mono);font-size:14px;font-weight:700;
  color:#8A6110;background:#FBF1DA;
}
.steps li strong{display:block;font-size:15.5px}
.steps li span{font-size:14.5px;color:var(--text-2)}

/* ============ FAQ ============ */
.faq{max-width:880px;margin:0 auto}
.faq-item{
  background:#fff;border:1px solid var(--border);border-left:2px solid var(--purple);
  border-radius:var(--r-card);margin-bottom:12px;overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item.open{border-left-color:var(--cyan);box-shadow:var(--sh-1)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;font-size:18px;font-weight:700;font-family:var(--font-serif);
  text-align:left;color:var(--text);
}
.faq-q:hover{color:var(--purple)}
.faq-arrow{flex:0 0 auto;width:20px;height:20px;color:var(--purple);transition:transform .2s ease}
.faq-item.open .faq-arrow{transform:rotate(180deg);color:var(--cyan)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease}
.faq-a p{padding:0 22px 20px;color:var(--text-2);line-height:1.85}
.faq-a{padding:0}

/* ============ Related ============ */
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--border);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--purple-line)}
.card-cover{aspect-ratio:16/10;overflow:hidden;background:rgba(91,46,140,.1)}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.card:hover .card-cover img{transform:scale(1.03)}
.card-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:19px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-body p{
  font-size:14.5px;color:var(--text-2);line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--text-3);font-family:var(--mono)}
.card-meta .go{color:var(--purple);font-family:var(--font-sans);font-weight:600;display:inline-flex;align-items:center;gap:5px}
.card-meta .go svg{width:14px;height:14px}

/* ============ CTA band ============ */
.cta-band{
  border-radius:var(--r-lg);padding:72px 40px;text-align:center;color:#fff;
  background:linear-gradient(135deg,rgba(91,46,140,.55),rgba(23,194,164,.4)),var(--dark);
  box-shadow:0 26px 60px -28px rgba(23,20,32,.6);
}
.cta-band h2{color:#fff;font-size:clamp(24px,3vw,36px);max-width:760px;margin:0 auto}
.cta-band p{color:rgba(255,255,255,.78);max-width:620px;margin:16px auto 0}
.cta-band .dl-list{justify-content:center;margin-top:32px}
.cta-band .dl-btn--outline{background:rgba(255,255,255,.08);color:#fff;border-color:rgba(255,255,255,.45)}
.cta-band .dl-btn--outline:hover{background:rgba(255,255,255,.18);border-color:#fff}
.cta-band .dl-btn--outline .dl-ico{background:rgba(255,255,255,.16)}
.cta-band .dl-btn--outline .dl-meta small{color:rgba(255,255,255,.75)}
.cta-meta{display:flex;flex-wrap:wrap;justify-content:center;gap:12px 26px;margin-top:26px;font-size:13px;color:rgba(255,255,255,.7);font-family:var(--mono)}

/* ============ Footer ============ */
.footer{background:var(--dark);color:rgba(255,255,255,.72);padding:72px 0 28px;margin-top:96px;font-size:14px}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.foot-brand{display:flex;align-items:center;gap:10px;color:#fff;font-family:var(--font-serif);font-weight:700;font-size:17px;margin-bottom:16px}
.foot-brand .logo-mark{background:linear-gradient(135deg,var(--purple),var(--cyan));box-shadow:none}
.foot-title{color:#fff;font-size:15px;font-family:var(--font-sans);margin-bottom:16px;font-weight:600}
.foot-links{display:flex;flex-direction:column;gap:11px}
.foot-links a{transition:color .18s ease}
.foot-links a:hover{color:var(--cyan)}
.footer p{line-height:1.85}
.foot-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.5);
}

/* ============ Drawer / mobile bar ============ */
.drawer{position:fixed;inset:0;z-index:200;visibility:hidden;pointer-events:none}
.drawer.open{visibility:visible;pointer-events:auto}
.drawer-mask{position:absolute;inset:0;background:rgba(23,20,32,.45);opacity:0;transition:opacity .25s ease}
.drawer.open .drawer-mask{opacity:1}
.drawer-panel{
  position:absolute;top:0;right:0;height:100%;width:min(320px,84vw);
  background:#fff;padding:24px 20px;transform:translateX(100%);
  transition:transform .28s ease;display:flex;flex-direction:column;gap:8px;overflow-y:auto;
}
.drawer.open .drawer-panel{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.drawer nav{display:flex;flex-direction:column}
.drawer nav a{font-size:18px;line-height:56px;padding:0 12px;border-radius:12px;color:var(--text-2)}
.drawer nav a.active{color:var(--purple);background:var(--purple-light);font-weight:600}
.drawer .btn{margin-top:16px;width:100%}
.mobile-bar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:110;
  padding:12px 16px calc(12px + env(safe-area-inset-bottom));
  background:rgba(255,255,255,.92);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  border-top:1px solid var(--border);
}
.mobile-bar .btn{width:100%}
.mobile-bar .plats{display:flex;gap:14px;justify-content:center;margin-top:8px;font-size:12px;color:var(--text-3);font-family:var(--mono)}

/* ============ Responsive ============ */
@media (min-width:1440px){
  .container{max-width:1200px}
}
@media (max-width:1199px){
  .container{max-width:1140px}
  .dock-nav a{padding:8px 10px;font-size:14.5px}
}
@media (max-width:1023px){
  .dock{width:min(720px,94vw)}
  .dock-nav{display:none}
  .burger{display:inline-flex}
  .dock-actions .btn-sm{display:none}
  .section{padding:72px 0}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-visual{order:2}
  .metrics{grid-template-columns:repeat(2,1fr)}
  .spec-grid,.compare,.compat-grid{grid-template-columns:1fr}
  .z-block{grid-template-columns:1fr;gap:28px}
  .z-block.rev .z-media{order:0}
  .rel-grid{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  body{font-size:16px;padding-bottom:96px}
  .container{padding:0 16px}
  .dock{
    top:0;left:0;right:0;transform:none;width:100%;border-radius:0 0 20px 20px;
    padding:10px 14px;gap:10px;
  }
  .dock.scrolled{width:100%}
  .page-main{padding-top:92px}
  .hero{padding:24px 0 64px}
  .hero h1{font-size:32px}
  .section{padding:56px 0}
  .metrics{grid-template-columns:repeat(2,1fr);gap:16px}
  .metric{padding:18px}
  .metric .val{font-size:22px}
  .rel-grid{grid-template-columns:1fr}
  .cta-band{padding:48px 20px}
  .dl-list,.cta-band .dl-list{flex-direction:column}
  .dl-btn{width:100%}
  .mobile-bar{display:block}
  .foot-grid{grid-template-columns:1fr;gap:28px}
  .foot-bottom{flex-direction:column;gap:8px}
  .faq-q{font-size:16.5px;padding:18px}
}
@media (max-width:420px){
  .hero h1{font-size:28px}
  .metric .val{font-size:20px}
  .logo-text{font-size:15.5px}
  .spec-card,.compare-col{padding:20px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
}

/* roulang page: category4 */
:root{
  --purple:#5B2E8C;
  --purple-deep:#4A2473;
  --purple-dark:#3A1D5C;
  --purple-soft:#F3EDFA;
  --purple-line:#DDD0F0;
  --teal:#17C2A4;
  --teal-hover:#12A98F;
  --teal-soft:#E7F8F4;
  --gold:#E0A22B;
  --bg:#FAF8F5;
  --bg-alt:#F3EFE9;
  --ink-dark:#171420;
  --ink-dark2:#1F1A2E;
  --text:#1D1A24;
  --text-2:#575261;
  --text-3:#8A8494;
  --line:#E7E1D8;
  --divider:#EFEAE2;
  --success:#1F9D6B;
  --error:#D64545;
  --disabled:#C9C4CE;
  --r-pill:999px;
  --r-block:24px;
  --r-card:18px;
  --r-img:14px;
  --r-input:12px;
  --r-badge:6px;
  --sh1:0 1px 2px rgba(29,26,36,.06),0 2px 8px rgba(29,26,36,.05);
  --sh2:0 8px 24px -8px rgba(91,46,140,.18);
  --sh-dock:0 12px 40px -12px rgba(29,26,36,.22);
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",SimSun,serif;
  --font-sans:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-mono:ui-monospace,Consolas,"SF Mono",Menlo,monospace;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16.5px;
  line-height:1.9;
  color:var(--text);
  background:var(--bg);
  padding-bottom:0;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--purple);text-decoration:none}
a:hover{color:var(--purple-deep)}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4{font-family:var(--font-serif);font-weight:700;letter-spacing:.02em;line-height:1.28;color:var(--text);margin:0}
p{margin:0 0 1.15em}
ul,ol{margin:0 0 1.15em;padding-left:1.3em}
li{margin-bottom:.5em;line-height:1.85}
:focus-visible{outline:2px solid var(--purple);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.mono{font-family:var(--font-mono);font-size:.94em;letter-spacing:0}

/* ---------- Dock ---------- */
.dock{
  position:fixed;
  top:18px;left:50%;
  transform:translateX(-50%);
  width:min(1180px,92vw);
  display:flex;align-items:center;gap:18px;
  padding:10px 12px 10px 20px;
  background:rgba(255,255,255,.72);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border:1px solid rgba(231,225,216,.9);
  border-radius:var(--r-pill);
  box-shadow:var(--sh-dock);
  z-index:120;
  transition:width .3s ease,padding .3s ease,box-shadow .3s ease;
}
.dock.compact{width:min(1132px,88vw);box-shadow:0 14px 44px -14px rgba(29,26,36,.28)}
.dock-logo{display:flex;align-items:center;gap:9px;flex-shrink:0;color:var(--text)}
.dock-logo:hover{color:var(--purple)}
.logo-mark{
  width:34px;height:34px;flex:0 0 34px;
  display:flex;align-items:center;justify-content:center;
  border-radius:11px;
  background:linear-gradient(135deg,var(--purple) 0%,var(--purple-dark) 55%,var(--teal) 130%);
  color:#fff;
}
.logo-mark svg{width:19px;height:19px}
.logo-text{font-family:var(--font-serif);font-weight:700;font-size:17px;letter-spacing:.02em;white-space:nowrap}
.dock-nav{display:flex;align-items:center;gap:2px;margin:0 auto;flex-wrap:nowrap}
.dock-nav a{
  position:relative;
  padding:9px 13px;
  font-size:14.5px;
  color:var(--text-2);
  border-radius:var(--r-pill);
  white-space:nowrap;
  transition:background .2s ease,color .2s ease;
}
.dock-nav a:hover{background:var(--purple-soft);color:var(--purple)}
.dock-nav a.active{color:var(--purple);font-weight:600;background:var(--purple-soft)}
.dock-nav a.active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:3px;height:2px;
  background:var(--purple);border-radius:2px;
}
.dock-actions{display:flex;align-items:center;gap:8px;flex-shrink:0}
.icon-btn{
  width:40px;height:40px;border-radius:var(--r-pill);
  display:flex;align-items:center;justify-content:center;
  color:var(--text-2);border:1px solid transparent;
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.icon-btn svg{width:19px;height:19px}
.icon-btn:hover{background:var(--purple-soft);color:var(--purple);border-color:var(--purple-line)}
.burger{display:none;width:40px;height:40px;border-radius:var(--r-pill);align-items:center;justify-content:center;color:var(--text-2)}
.burger svg{width:20px;height:20px}
.burger:hover{background:var(--purple-soft);color:var(--purple)}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;line-height:1.2;
  border:1.5px solid transparent;
  transition:transform .2s ease,background .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease;
  cursor:pointer;
}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-primary{background:var(--teal);color:#fff;box-shadow:0 6px 18px -8px rgba(23,194,164,.65)}
.btn-primary:hover{background:var(--teal-hover);color:#fff;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-outline{border-color:var(--purple);color:var(--purple);background:transparent}
.btn-outline:hover{background:var(--purple-soft);color:var(--purple-deep)}
.btn-ghost{color:var(--purple);padding:12px 8px}
.btn-ghost:hover{color:var(--purple-deep)}
.btn-ghost svg{width:16px;height:16px;transition:transform .2s ease}
.btn-ghost:hover svg{transform:translateX(3px)}
.btn[disabled],.btn.is-disabled{background:var(--disabled);border-color:var(--disabled);color:#fff;cursor:not-allowed;box-shadow:none;transform:none;filter:saturate(.6)}
.btn.is-loading{pointer-events:none;opacity:.85}
.spinner{width:16px;height:16px;border-radius:50%;border:2px solid rgba(255,255,255,.45);border-top-color:#fff;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.dl-group{display:flex;flex-wrap:wrap;gap:12px}
.dl-btn{
  display:flex;align-items:center;gap:11px;
  padding:11px 20px 11px 15px;
  border-radius:var(--r-pill);
  border:1.5px solid var(--line);
  background:#fff;
  box-shadow:var(--sh1);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.dl-btn:hover{transform:translateY(-2px);border-color:var(--purple-line);box-shadow:var(--sh2);color:var(--text)}
.dl-btn svg{width:20px;height:20px;color:var(--purple);flex:0 0 20px}
.dl-btn .dl-txt{display:flex;flex-direction:column;line-height:1.3;text-align:left}
.dl-btn .dl-name{font-size:14.5px;font-weight:600;color:var(--text)}
.dl-btn .dl-meta{font-family:var(--font-mono);font-size:11.5px;color:var(--text-3);letter-spacing:0}
.dl-btn.is-primary{background:var(--teal);border-color:var(--teal)}
.dl-btn.is-primary svg,.dl-btn.is-primary .dl-name{color:#fff}
.dl-btn.is-primary .dl-meta{color:rgba(255,255,255,.8)}
.dl-btn.is-primary:hover{background:var(--teal-hover);border-color:var(--teal-hover)}

/* ---------- Breadcrumb ---------- */
.crumb-bar{padding-top:118px}
.crumb{font-size:13px;color:var(--text-3);display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.crumb a{color:var(--text-3)}
.crumb a:hover{color:var(--purple)}
.crumb .sep{color:#C6C0B6}
.crumb .now{color:var(--purple);font-weight:600}

/* ---------- Section basics ---------- */
section{padding:96px 0}
.sec-head{max-width:760px;margin-bottom:44px}
.sec-head h2{font-size:clamp(24px,3vw,36px);margin-bottom:14px}
.sec-head p{color:var(--text-2);margin-bottom:0}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.06em;
  color:var(--purple);background:var(--purple-soft);
  padding:5px 12px;border-radius:var(--r-badge);margin-bottom:16px;
}

/* ---------- Category hero ---------- */
.cat-hero{padding:34px 0 84px}
.hero-grid{display:grid;grid-template-columns:6fr 6fr;gap:52px;align-items:center}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--purple-soft);color:var(--purple-deep);
  border:1px solid var(--purple-line);
  padding:6px 14px;border-radius:var(--r-pill);
  font-size:13px;font-weight:600;margin-bottom:20px;
}
.hero-badge .dot{width:7px;height:7px;border-radius:50%;background:var(--teal)}
.cat-hero h1{font-size:clamp(30px,4.4vw,46px);margin-bottom:18px}
.cat-hero h1 em{font-style:normal;color:var(--purple)}
.hero-lead{font-size:17px;color:var(--text-2);max-width:620px;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin-bottom:26px}
.trust-row{display:flex;flex-wrap:wrap;gap:10px 22px;font-size:13px;color:var(--text-3);font-family:var(--font-mono);letter-spacing:0}
.trust-row span{display:inline-flex;align-items:center;gap:6px}
.trust-row svg{width:14px;height:14px;color:var(--teal)}
.hero-visual{position:relative;border-radius:var(--r-block);overflow:hidden;box-shadow:var(--sh2)}
.hero-visual img{width:100%;aspect-ratio:3/2;object-fit:cover}
.hero-visual::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(91,46,140,.34) 0%,rgba(23,194,164,.24) 100%);
}
.hero-visual .visual-tag{
  position:absolute;left:20px;bottom:20px;z-index:2;
  background:rgba(255,255,255,.9);color:var(--text);
  padding:8px 16px;border-radius:var(--r-pill);
  font-size:13px;font-weight:600;box-shadow:var(--sh1);
}

/* ---------- Guide layout ---------- */
.guide-wrap{background:var(--bg);border-top:1px solid var(--divider)}
.guide-grid{display:grid;grid-template-columns:280px minmax(0,1fr);gap:56px;align-items:start}
.toc{
  position:sticky;top:104px;
  background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);padding:22px;box-shadow:var(--sh1);
}
.toc h2{font-size:16px;margin-bottom:14px;letter-spacing:.04em;color:var(--text-2);font-family:var(--font-sans);font-weight:700}
.toc ol{list-style:none;margin:0;padding:0;counter-reset:toc}
.toc li{counter-increment:toc;margin:0}
.toc a{
  display:flex;gap:10px;align-items:baseline;
  padding:9px 10px;border-radius:10px;
  font-size:14px;color:var(--text-2);line-height:1.5;
  transition:background .2s ease,color .2s ease,transform .2s ease;
}
.toc a::before{
  content:counter(toc,decimal-leading-zero);
  font-family:var(--font-mono);font-size:12px;color:var(--gold);flex:0 0 auto;
}
.toc a:hover{background:var(--purple-soft);color:var(--purple);transform:translateX(2px)}
.toc a.is-current{background:var(--purple-soft);color:var(--purple);font-weight:600}
.toc-note{margin-top:16px;padding-top:16px;border-top:1px dashed var(--line);font-size:13px;color:var(--text-3);line-height:1.75}

.mobile-toc{display:none}
.mobile-toc details{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh1);margin-bottom:28px;
}
.mobile-toc summary{
  list-style:none;cursor:pointer;padding:16px 20px;
  font-weight:700;font-size:15px;display:flex;justify-content:space-between;align-items:center;
}
.mobile-toc summary::-webkit-details-marker{display:none}
.mobile-toc summary svg{width:18px;height:18px;color:var(--purple);transition:transform .2s ease}
.mobile-toc details[open] summary svg{transform:rotate(180deg)}
.mobile-toc ol{list-style:none;margin:0;padding:0 20px 18px}
.mobile-toc a{display:block;padding:9px 0;font-size:14.5px;color:var(--text-2);border-top:1px solid var(--divider)}

.doc{max-width:780px}
.doc-section{padding:0 0 46px;margin-bottom:46px;border-bottom:1px solid var(--divider)}
.doc-section:last-child{border-bottom:0;margin-bottom:0;padding-bottom:0}
.doc-section h2{
  font-size:clamp(21px,2.4vw,27px);
  margin-bottom:18px;position:relative;padding-left:18px;
}
.doc-section h2::before{
  content:"";position:absolute;left:0;top:.24em;
  width:4px;height:1em;border-radius:3px;
  background:linear-gradient(180deg,var(--purple),var(--teal));
}
.doc-section h3{font-size:18px;margin:26px 0 10px}
.doc-section p{color:var(--text-2)}
.doc-section strong{color:var(--text)}
.doc-figure{margin:24px 0}
.doc-figure img{width:100%;border-radius:var(--r-img);aspect-ratio:16/9;object-fit:cover;border:1px solid var(--line)}
.doc-figure figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px}
.doc-quote{
  margin:24px 0;padding:18px 22px;
  background:var(--purple-soft);
  border-left:3px solid var(--purple);
  border-radius:0 var(--r-img) var(--r-img) 0;
  color:var(--purple-dark);
}
.doc-quote p:last-child{margin-bottom:0}
.steps{list-style:none;counter-reset:step;padding:0;margin:20px 0}
.steps li{
  counter-increment:step;position:relative;
  padding:0 0 22px 44px;margin:0;
  border-left:2px solid var(--divider);
  margin-left:14px;
}
.steps li::before{
  content:counter(step);
  position:absolute;left:-15px;top:1px;
  width:28px;height:28px;border-radius:50%;
  background:#fff;border:2px solid var(--gold);color:var(--purple-deep);
  font-family:var(--font-mono);font-size:13px;font-weight:600;
  display:flex;align-items:center;justify-content:center;
}
.steps li:last-child{border-left-color:transparent;padding-bottom:0}
.steps li b{display:block;margin-bottom:4px}
.steps li span{color:var(--text-2)}

.kv-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:8px 22px;box-shadow:var(--sh1);margin:22px 0;
}
.kv-row{display:flex;justify-content:space-between;gap:18px;padding:13px 0;border-bottom:1px dashed var(--divider);align-items:center}
.kv-row:last-child{border-bottom:0}
.kv-row .k{color:var(--text-2);font-size:15px}
.kv-row .v{font-family:var(--font-mono);font-size:14px;color:var(--text);background:var(--bg-alt);padding:3px 10px;border-radius:var(--r-badge)}
.check-list{list-style:none;padding:0}
.check-list li{position:relative;padding-left:28px}
.check-list li::before{
  content:"";position:absolute;left:0;top:.55em;
  width:14px;height:14px;border-radius:4px;
  background:var(--teal-soft);
  box-shadow:inset 0 0 0 1.5px var(--teal);
}
.tag-set{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
.tag{
  font-size:12.5px;padding:5px 11px;border-radius:var(--r-badge);
  background:var(--purple-soft);color:var(--purple-deep);font-weight:600;
}
.tag.gold{background:#FBF1DC;color:#8A6413}
.tag.teal{background:var(--teal-soft);color:#0C7A66}

/* ---------- Tips strip ---------- */
.tips{background:var(--bg-alt);border-radius:var(--r-block)}
.tips-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.tip-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--sh1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.tip-card:hover{transform:translateY(-2px);box-shadow:var(--sh2);border-color:var(--purple-line)}
.tip-num{
  font-family:var(--font-mono);font-size:13px;font-weight:600;color:var(--gold);
  display:block;margin-bottom:12px;
}
.tip-card h3{font-size:18px;margin-bottom:10px}
.tip-card p{color:var(--text-2);font-size:15px;margin-bottom:0}

/* ---------- Related categories ---------- */
.rel-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.rel-card{
  display:flex;flex-direction:column;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--sh2);border-color:var(--purple-line);color:var(--text)}
.rel-cover{aspect-ratio:16/10;overflow:hidden;background:var(--purple-soft)}
.rel-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.rel-card:hover .rel-cover img{transform:scale(1.04)}
.rel-body{padding:20px 22px 22px}
.rel-body h3{font-size:17px;margin-bottom:8px}
.rel-body p{font-size:14px;color:var(--text-2);margin-bottom:12px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-link{font-size:14px;font-weight:600;color:var(--purple);display:inline-flex;align-items:center;gap:6px}
.rel-link svg{width:15px;height:15px;transition:transform .2s ease}
.rel-card:hover .rel-link svg{transform:translateX(3px)}

/* ---------- FAQ ---------- */
.faq{background:var(--bg)}
.faq-list{max-width:860px}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  margin-bottom:14px;box-shadow:var(--sh1);overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item[open]{border-color:var(--purple-line);box-shadow:var(--sh2)}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;justify-content:space-between;align-items:center;gap:18px;
  padding:20px 24px 20px 26px;
  font-size:18px;font-weight:700;font-family:var(--font-serif);
  border-left:3px solid var(--purple);
  transition:color .2s ease,border-color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item[open] summary{border-left-color:var(--teal);color:var(--purple-deep)}
.faq-item summary svg{width:20px;height:20px;flex:0 0 20px;color:var(--purple);transition:transform .2s ease}
.faq-item[open] summary svg{transform:rotate(180deg)}
.faq-answer{padding:0 24px 22px 29px;color:var(--text-2);line-height:1.85;font-size:15.5px}
.faq-answer p{margin-bottom:0}

/* ---------- CTA ---------- */
.cta{padding:0 24px 96px}
.cta-inner{
  position:relative;overflow:hidden;
  background:var(--ink-dark);
  border-radius:var(--r-block);
  padding:76px 48px;
  text-align:center;
  max-width:var(--container);margin:0 auto;
}
.cta-inner::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(91,46,140,.35) 0%,rgba(23,194,164,.28) 100%);
}
.cta-inner > *{position:relative;z-index:2}
.cta-inner h2{color:#fff;font-size:clamp(24px,3.2vw,37px);margin-bottom:16px}
.cta-inner p{color:rgba(255,255,255,.76);max-width:640px;margin:0 auto 32px}
.cta .dl-group{justify-content:center}
.cta .dl-btn{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.22);color:#fff}
.cta .dl-btn .dl-name{color:#fff}
.cta .dl-btn .dl-meta{color:rgba(255,255,255,.62)}
.cta .dl-btn svg{color:var(--teal)}
.cta .dl-btn:hover{background:rgba(255,255,255,.15);border-color:rgba(255,255,255,.4)}
.cta .dl-btn.is-primary{background:var(--teal);border-color:var(--teal)}
.cta .dl-btn.is-primary svg,.cta .dl-btn.is-primary .dl-name{color:#fff}
.cta .dl-btn.is-primary:hover{background:var(--teal-hover)}
.cta-meta{
  margin-top:26px;font-family:var(--font-mono);font-size:12.5px;
  color:rgba(255,255,255,.55);display:flex;justify-content:center;gap:22px;flex-wrap:wrap;
}

/* ---------- Footer ---------- */
.footer{background:var(--ink-dark);color:rgba(255,255,255,.72);padding:72px 0 32px;font-size:14px}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.1)}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.foot-brand span:last-child{font-family:var(--font-serif);font-size:17px;font-weight:700;color:#fff}
.footer p{color:rgba(255,255,255,.62);line-height:1.85}
.foot-title{font-size:15px;color:#fff;margin-bottom:16px;font-family:var(--font-sans);font-weight:700;letter-spacing:.04em}
.foot-links{display:flex;flex-direction:column;gap:10px}
.foot-links a{color:rgba(255,255,255,.68)}
.foot-links a:hover{color:var(--teal)}
.foot-bottom{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;padding-top:26px;font-size:13px;color:rgba(255,255,255,.5)}

/* ---------- Mobile download bar ---------- */
.mobile-bar{
  display:none;
  position:fixed;left:0;right:0;bottom:0;z-index:110;
  background:rgba(23,20,32,.96);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  border-top:1px solid rgba(255,255,255,.12);
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  align-items:center;justify-content:space-between;gap:12px;
}
.mobile-bar .mb-txt{color:#fff;font-size:13.5px;font-weight:600;display:flex;align-items:center;gap:8px}
.mobile-bar .mb-txt span{font-family:var(--font-mono);font-size:11px;color:rgba(255,255,255,.55);font-weight:400}
.mobile-bar .btn{min-height:44px}

/* ---------- Responsive ---------- */
@media (max-width:1199px){
  .container{max-width:1140px}
  .guide-grid{grid-template-columns:250px minmax(0,1fr);gap:40px}
  .rel-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:1023px){
  .dock-nav{gap:0}
  .dock-nav a{padding:9px 10px;font-size:13.5px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-visual{order:2}
  .cat-hero{padding:26px 0 64px}
  section{padding:72px 0}
  .guide-grid{grid-template-columns:1fr;gap:0}
  .toc{display:none}
  .mobile-toc{display:block}
  .doc{max-width:none}
  .tips-grid{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta{padding:0 24px 72px}
  .cta-inner{padding:60px 32px}
}
@media (max-width:767px){
  body{font-size:16px;padding-bottom:76px}
  .container{padding:0 16px}
  .dock{top:10px;width:calc(100% - 24px);padding:8px 10px 8px 14px;border-radius:var(--r-pill)}
  .logo-text{font-size:15.5px}
  .dock-nav{
    position:fixed;top:0;right:0;bottom:0;
    width:min(320px,86vw);
    flex-direction:column;align-items:stretch;gap:0;
    background:#fff;padding:88px 20px 28px;
    box-shadow:-16px 0 48px -20px rgba(29,26,36,.35);
    transform:translateX(105%);
    transition:transform .28s ease;
    margin:0;overflow-y:auto;z-index:130;
  }
  .dock-nav.open{transform:translateX(0)}
  .dock-nav a{
    font-size:18px;line-height:56px;padding:0 12px;border-radius:12px;
    border-bottom:1px solid var(--divider);
  }
  .dock-nav a.active::after{display:none}
  .burger{display:flex}
  .dock-actions .btn-sm{display:none}
  .crumb-bar{padding-top:92px}
  section{padding:56px 0}
  .cat-hero h1{font-size:31px}
  .hero-lead{font-size:16px}
  .hero-actions .btn{width:100%}
  .dl-group{flex-direction:column}
  .dl-btn{width:100%}
  .tips-grid{grid-template-columns:1fr}
  .rel-grid{grid-template-columns:1fr}
  .kv-row{flex-direction:column;align-items:flex-start;gap:6px}
  .foot-grid{grid-template-columns:1fr;gap:28px}
  .cta-inner{padding:48px 22px;border-radius:var(--r-card)}
  .faq-item summary{font-size:16.5px;padding:17px 18px 17px 20px}
  .faq-answer{padding:0 18px 20px 23px}
  .mobile-bar{display:flex}
}
@media (max-width:420px){
  body{font-size:15.5px}
  .cat-hero h1{font-size:27px}
  .sec-head h2{font-size:22px}
  .doc-section h2{font-size:20px}
  .tip-card{padding:20px}
  .cta-inner h2{font-size:23px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
  .rel-card:hover .rel-cover img{transform:none}
}

/* roulang page: category5 */
:root{
  --brand:#5B2E8C;
  --brand-deep:#4A2473;
  --brand-dark:#3A1D5C;
  --brand-soft:#F3EDFA;
  --brand-line:#DDD0F0;
  --accent:#17C2A4;
  --accent-hover:#12A98F;
  --accent-soft:#E7F8F4;
  --gold:#E0A22B;
  --bg:#FAF8F5;
  --bg-alt:#F3EFE9;
  --dark:#171420;
  --dark-2:#1F1A2E;
  --text:#1D1A24;
  --text-2:#575261;
  --text-3:#8A8494;
  --line:#E7E1D8;
  --line-2:#EFEAE2;
  --ok:#1F9D6B;
  --err:#D64545;
  --disabled:#C9C4CE;
  --r-pill:999px;
  --r-lg:24px;
  --r-card:18px;
  --r-img:14px;
  --r-input:12px;
  --r-badge:6px;
  --sh-1:0 1px 2px rgba(29,26,36,.06),0 2px 8px rgba(29,26,36,.05);
  --sh-2:0 8px 24px -8px rgba(91,46,140,.18);
  --sh-dock:0 12px 40px -12px rgba(29,26,36,.22);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",SimSun,serif;
  --sans:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --mono:ui-monospace,"SFMono-Regular",Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16.5px;
  line-height:1.9;
  color:var(--text);
  background:var(--bg);
  padding-top:104px;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;}
h1,h2,h3,h4{font-family:var(--serif);font-weight:700;letter-spacing:.02em;line-height:1.28;margin:0;color:var(--text);}
h1{font-size:clamp(30px,4.4vw,52px);}
h2{font-size:clamp(24px,3vw,36px);}
h3{font-size:21px;}
h4{font-size:17px;}
p{margin:0 0 1.15em;}
ul,ol{margin:0 0 1.15em;padding-left:1.2em;}
li{margin-bottom:.5em;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
.container{max-width:1200px;margin:0 auto;padding:0 24px;width:100%;}

/* ============ Dock 导航 ============ */
.dock{
  position:fixed;
  top:18px;
  left:50%;
  transform:translateX(-50%);
  width:min(1180px,92vw);
  display:flex;
  align-items:center;
  gap:18px;
  padding:10px 14px 10px 18px;
  border-radius:var(--r-pill);
  background:rgba(255,255,255,.72);
  -webkit-backdrop-filter:blur(14px) saturate(160%);
  backdrop-filter:blur(14px) saturate(160%);
  border:1px solid rgba(255,255,255,.9);
  box-shadow:var(--sh-dock);
  z-index:80;
  transition:width .25s ease,box-shadow .25s ease,padding .25s ease;
}
.dock.shrink{
  width:min(1134px,89vw);
  box-shadow:0 16px 44px -14px rgba(29,26,36,.3);
}
.dock-logo{
  display:flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  padding:6px 8px;
  border-radius:var(--r-pill);
}
.logo-mark{
  width:34px;height:34px;
  display:grid;place-items:center;
  border-radius:11px;
  background:linear-gradient(135deg,var(--brand),var(--brand-dark));
  color:#fff;
  flex:0 0 auto;
}
.logo-mark svg{width:19px;height:19px;}
.logo-text{
  font-family:var(--serif);
  font-size:17px;
  font-weight:700;
  letter-spacing:.02em;
  white-space:nowrap;
}
.dock-nav{
  display:flex;
  align-items:center;
  gap:2px;
  margin:0 auto;
  flex-wrap:nowrap;
}
.dock-nav a{
  display:inline-flex;
  align-items:center;
  height:42px;
  padding:0 14px;
  border-radius:var(--r-pill);
  font-size:15px;
  color:var(--text-2);
  position:relative;
  white-space:nowrap;
  transition:background .18s ease,color .18s ease;
}
.dock-nav a:hover{background:var(--brand-soft);color:var(--brand-deep);}
.dock-nav a.active{color:var(--brand-deep);font-weight:600;}
.dock-nav a.active::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:4px;
  height:2px;border-radius:2px;
  background:var(--brand);
}
.dock-actions{display:flex;align-items:center;gap:8px;flex:0 0 auto;}
.icon-btn{
  width:42px;height:42px;
  display:grid;place-items:center;
  border-radius:var(--r-pill);
  background:#fff;
  border:1px solid var(--line);
  cursor:pointer;
  color:var(--text-2);
  transition:border-color .18s ease,color .18s ease,background .18s ease;
}
.icon-btn svg{width:19px;height:19px;}
.icon-btn:hover{border-color:var(--brand-line);color:var(--brand);background:var(--brand-soft);}
.burger{display:none;width:42px;height:42px;place-items:center;border-radius:var(--r-pill);background:#fff;border:1px solid var(--line);cursor:pointer;}
.burger svg{width:20px;height:20px;}

/* 按钮 */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:46px;
  padding:0 24px;
  border-radius:var(--r-pill);
  font-size:15.5px;
  font-weight:600;
  border:1.5px solid transparent;
  cursor:pointer;
  transition:transform .18s ease,background .18s ease,border-color .18s ease,box-shadow .18s ease,color .18s ease;
  text-align:center;
}
.btn svg{width:18px;height:18px;flex:0 0 auto;}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 6px 18px -8px rgba(23,194,164,.7);}
.btn-primary:hover{background:var(--accent-hover);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);}
.btn-outline{background:#fff;border-color:var(--brand);color:var(--brand-deep);}
.btn-outline:hover{background:var(--brand-soft);}
.btn-text{background:transparent;color:var(--brand-deep);padding:0 6px;min-height:44px;}
.btn-text:hover{color:var(--accent-hover);}
.btn-sm{min-height:40px;padding:0 18px;font-size:14.5px;}
.btn[disabled],.btn.is-disabled{background:var(--disabled);border-color:var(--disabled);color:#fff;cursor:not-allowed;box-shadow:none;transform:none;}
.btn.is-loading{color:transparent;position:relative;}
.btn.is-loading::after{
  content:"";position:absolute;width:16px;height:16px;border-radius:50%;
  border:2px solid rgba(255,255,255,.45);border-top-color:#fff;animation:spin .7s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg);}}

/* 移动抽屉 */
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(340px,86vw);
  background:#fff;z-index:95;
  transform:translateX(102%);
  transition:transform .3s ease;
  box-shadow:-16px 0 40px -18px rgba(29,26,36,.3);
  padding:20px 20px 32px;
  overflow-y:auto;
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px;}
.drawer-head span{font-family:var(--serif);font-weight:700;font-size:17px;}
.drawer-close{width:40px;height:40px;border-radius:var(--r-pill);border:1px solid var(--line);background:#fff;display:grid;place-items:center;cursor:pointer;}
.drawer nav{display:flex;flex-direction:column;}
.drawer nav a{
  display:flex;align-items:center;
  height:56px;font-size:18px;
  padding:0 12px;border-radius:12px;
  border-bottom:1px solid var(--line-2);
  color:var(--text-2);
}
.drawer nav a.active{color:var(--brand-deep);font-weight:600;background:var(--brand-soft);}
.scrim{position:fixed;inset:0;background:rgba(23,20,32,.42);opacity:0;pointer-events:none;transition:opacity .28s ease;z-index:90;}
.scrim.show{opacity:1;pointer-events:auto;}

/* ============ 面包屑 ============ */
.breadcrumb{
  margin-top:24px;
  font-size:13px;
  color:var(--text-3);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
}
.breadcrumb a{color:var(--text-3);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{opacity:.6;}
.breadcrumb .current{color:var(--brand);font-weight:700;}

/* ============ Hero ============ */
.hero{padding:40px 0 72px;}
.hero-grid{
  display:grid;
  grid-template-columns:6fr 6fr;
  gap:48px;
  align-items:center;
}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 14px;
  border-radius:var(--r-pill);
  background:var(--brand-soft);
  border:1px solid var(--brand-line);
  color:var(--brand-deep);
  font-size:13.5px;
  margin-bottom:20px;
}
.hero-badge .dot{width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(23,194,164,.18);}
.hero h1{margin-bottom:18px;}
.hero h1 em{font-style:normal;display:block;font-size:.62em;color:var(--brand);margin-top:10px;}
.hero-sub{
  font-size:17px;
  color:var(--text-2);
  max-width:620px;
  margin-bottom:26px;
}
.hero-btns{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:26px;}
.trust-row{
  display:flex;flex-wrap:wrap;gap:20px;
  padding-top:20px;
  border-top:1px solid var(--line);
  font-size:13.5px;
  color:var(--text-3);
}
.trust-row b{display:block;font-family:var(--mono);font-size:15px;color:var(--text);font-weight:600;}
.hero-visual{
  position:relative;
  border-radius:var(--r-lg);
  overflow:hidden;
  aspect-ratio:16/10;
  box-shadow:var(--sh-2);
  background:linear-gradient(135deg,rgba(91,46,140,.12),rgba(23,194,164,.12));
}
.hero-visual img{width:100%;height:100%;object-fit:cover;}
.hero-visual::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(91,46,140,.32),rgba(23,194,164,.2));
}
.hero-visual .dots{
  position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.5) 1px,transparent 1px);
  background-size:14px 14px;
  opacity:.35;
  z-index:2;
}

/* ============ 通用板块 ============ */
.section{padding:64px 0;}
.section.alt{background:var(--bg-alt);}
.section.dark{background:var(--dark);color:#EDE9F3;}
.section-head{max-width:760px;margin-bottom:40px;}
.eyebrow{
  display:inline-block;
  font-size:13px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--brand);
  margin-bottom:12px;
  font-weight:600;
}
.section.dark .eyebrow{color:var(--accent);}
.section-head p{color:var(--text-2);font-size:16.5px;margin-top:14px;margin-bottom:0;}
.section.dark .section-head p{color:#BFB8CE;}
.section.dark h2{color:#fff;}

/* 指标条 */
.stats{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:0;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
  overflow:hidden;
}
.stat{padding:26px 24px;border-right:1px solid var(--line-2);}
.stat:last-child{border-right:0;}
.stat b{display:block;font-family:var(--mono);font-size:26px;color:var(--brand-deep);font-weight:600;line-height:1.3;}
.stat span{font-size:13.5px;color:var(--text-3);}

/* 快速定位卡 */
.quick-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.quick-card{
  display:block;
  padding:24px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.quick-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--brand-line);}
.quick-card .qi{
  width:42px;height:42px;border-radius:12px;
  display:grid;place-items:center;
  background:var(--accent-soft);color:var(--accent-hover);
  margin-bottom:16px;
}
.quick-card .qi svg{width:20px;height:20px;}
.quick-card h3{font-size:17.5px;margin-bottom:8px;}
.quick-card p{font-size:14.5px;color:var(--text-2);margin:0 0 12px;line-height:1.75;}
.quick-card .more{font-size:14px;color:var(--brand);font-weight:600;}

/* FAQ */
.faq-wrap{display:grid;grid-template-columns:260px 1fr;gap:40px;align-items:start;}
.faq-side{position:sticky;top:120px;}
.faq-side h3{font-size:18px;margin-bottom:16px;}
.faq-side nav{display:flex;flex-direction:column;gap:6px;}
.faq-side nav a{
  padding:10px 14px;
  border-radius:12px;
  font-size:14.5px;
  color:var(--text-2);
  border-left:2px solid transparent;
  transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.faq-side nav a:hover{background:var(--brand-soft);color:var(--brand-deep);border-left-color:var(--brand);}
.faq-group{margin-bottom:44px;}
.faq-group:last-child{margin-bottom:0;}
.faq-group > h3{
  display:flex;align-items:center;gap:10px;
  font-size:19px;
  margin-bottom:18px;
}
.faq-group > h3 .num{
  font-family:var(--mono);
  font-size:13px;
  color:#fff;
  background:var(--gold);
  border-radius:var(--r-badge);
  padding:3px 8px;
  letter-spacing:.04em;
}
.faq-item{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{border-color:var(--brand-line);}
.faq-item.open{border-color:var(--brand-line);box-shadow:var(--sh-2);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  text-align:left;
  background:none;
  border:0;
  border-left:2px solid var(--brand);
  padding:18px 20px;
  font-size:17.5px;
  font-weight:700;
  font-family:var(--serif);
  cursor:pointer;
  transition:border-color .2s ease,background .2s ease;
}
.faq-item.open .faq-q{border-left-color:var(--accent);}
.faq-q:hover{background:var(--brand-soft);}
.faq-q .arw{
  flex:0 0 auto;
  width:22px;height:22px;
  display:grid;place-items:center;
  color:var(--brand);
  transition:transform .2s ease;
}
.faq-q .arw svg{width:16px;height:16px;}
.faq-item.open .faq-q .arw{transform:rotate(180deg);color:var(--accent-hover);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .3s ease;
}
.faq-item.open .faq-a{max-height:520px;}
.faq-a .inner{
  padding:0 20px 20px 22px;
  color:var(--text-2);
  font-size:16px;
  line-height:1.85;
}
.faq-a .inner p{margin-bottom:.8em;}
.faq-a .inner p:last-child{margin-bottom:0;}
.faq-a .inner ul{padding-left:1.1em;margin-bottom:.6em;}

/* 排查步骤 */
.steps{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
  counter-reset:step;
}
.step{
  position:relative;
  padding:26px 22px 24px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
}
.step::before{
  counter-increment:step;
  content:counter(step,decimal-leading-zero);
  font-family:var(--mono);
  font-size:13px;
  color:#8a6512;
  background:rgba(224,162,43,.16);
  border:1px solid rgba(224,162,43,.4);
  border-radius:var(--r-badge);
  padding:2px 8px;
  display:inline-block;
  margin-bottom:14px;
}
.step h3{font-size:17px;margin-bottom:8px;}
.step p{font-size:14.5px;color:var(--text-2);margin:0;line-height:1.78;}

/* 表单 */
.form-wrap{
  display:grid;
  grid-template-columns:1fr 1.15fr;
  gap:44px;
  align-items:start;
}
.form-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:28px;
  box-shadow:var(--sh-1);
}
.field{margin-bottom:20px;}
.field label{display:block;font-size:14.5px;font-weight:600;margin-bottom:8px;}
.field .hint{font-size:13px;color:var(--text-3);font-weight:400;margin-left:6px;}
.field input,.field select,.field textarea{
  width:100%;
  padding:12px 14px;
  border-radius:var(--r-input);
  border:1px solid var(--line);
  background:#FDFCFA;
  font-family:var(--sans);
  font-size:15.5px;
  color:var(--text);
  transition:border-color .18s ease,box-shadow .18s ease,background .18s ease;
}
.field textarea{min-height:130px;resize:vertical;line-height:1.75;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;
  border-color:var(--brand);
  background:#fff;
  box-shadow:0 0 0 2px rgba(91,46,140,.28);
}
.field.error input,.field.error select,.field.error textarea{border-color:var(--err);background:#FEF8F8;}
.field-error{display:none;font-size:13px;color:var(--err);margin-top:6px;}
.field.error .field-error{display:block;}
.form-actions{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:6px;}
.form-note{font-size:13px;color:var(--text-3);}
.form-success{
  display:none;
  align-items:center;
  gap:10px;
  margin-top:20px;
  padding:14px 16px;
  border-radius:12px;
  background:var(--accent-soft);
  border:1px solid rgba(31,157,107,.28);
  color:#12694a;
  font-size:14.5px;
}
.form-success.show{display:flex;}
.form-success svg{width:18px;height:18px;flex:0 0 auto;}
.form-aside{
  background:var(--brand-soft);
  border:1px solid var(--brand-line);
  border-radius:var(--r-lg);
  padding:28px;
}
.form-aside h3{font-size:19px;margin-bottom:14px;color:var(--brand-deep);}
.form-aside ul{list-style:none;padding:0;margin:0;}
.form-aside li{
  display:flex;gap:10px;
  padding:12px 0;
  border-bottom:1px dashed var(--brand-line);
  font-size:15px;
  color:var(--text-2);
}
.form-aside li:last-child{border-bottom:0;}
.form-aside li svg{width:18px;height:18px;color:var(--accent-hover);flex:0 0 auto;margin-top:5px;}

/* 相关分类 */
.rel-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.rel-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  display:flex;
  flex-direction:column;
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--brand-line);}
.rel-card .thumb{
  aspect-ratio:16/10;
  background:rgba(91,46,140,.12);
  overflow:hidden;
}
.rel-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.rel-card:hover .thumb img{transform:scale(1.03);}
.rel-card .body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.rel-card h3{font-size:17.5px;}
.rel-card p{font-size:14.5px;color:var(--text-2);margin:0;line-height:1.75;}
.rel-card .link{margin-top:auto;font-size:14px;font-weight:600;color:var(--brand);}
.badge{
  display:inline-block;
  font-size:12.5px;
  padding:3px 9px;
  border-radius:var(--r-badge);
  background:var(--brand-soft);
  color:var(--brand-deep);
  border:1px solid var(--brand-line);
}
.badge.cyan{background:var(--accent-soft);color:#0f7f6b;border-color:rgba(23,194,164,.32);}
.badge.gold{background:rgba(224,162,43,.14);color:#8a6512;border-color:rgba(224,162,43,.4);}

/* CTA */
.cta{
  background:var(--dark);
  color:#fff;
  border-radius:var(--r-lg);
  padding:56px 40px;
  text-align:center;
  position:relative;
  overflow:hidden;
}
.cta::before{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(91,46,140,.35),rgba(23,194,164,.22));
}
.cta > *{position:relative;z-index:2;}
.cta h2{color:#fff;margin-bottom:14px;}
.cta p{color:#C9C2D6;max-width:640px;margin:0 auto 26px;}
.cta-btns{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-bottom:22px;}
.cta .btn-outline{background:transparent;border-color:rgba(255,255,255,.5);color:#fff;}
.cta .btn-outline:hover{background:rgba(255,255,255,.12);}
.cta-meta{
  display:flex;flex-wrap:wrap;gap:20px;justify-content:center;
  font-size:13.5px;color:#A79FB8;
  font-family:var(--mono);
}

/* 页脚 */
.footer{background:var(--dark);color:#B8B1C6;padding:64px 0 28px;margin-top:64px;}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;color:#fff;font-family:var(--serif);font-size:17px;font-weight:700;}
.foot-title{font-size:15px;color:#fff;margin-bottom:16px;font-family:var(--sans);font-weight:700;}
.footer p{font-size:14px;line-height:1.85;margin:0 0 12px;}
.foot-links{display:flex;flex-direction:column;gap:10px;}
.foot-links a{font-size:14px;color:#B8B1C6;transition:color .18s ease;}
.foot-links a:hover{color:var(--accent);}
.foot-bottom{
  margin-top:44px;
  padding-top:22px;
  border-top:1px solid rgba(255,255,255,.1);
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  justify-content:space-between;
  font-size:13.5px;
  color:#8A8299;
}

/* 移动端底部条 */
.mobile-bar{
  display:none;
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:70;
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  background:rgba(23,20,32,.94);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-top:1px solid rgba(255,255,255,.1);
  align-items:center;
  justify-content:space-between;
  gap:12px;
}
.mobile-bar span{color:#CFC9DA;font-size:13px;}
.mobile-bar .btn{min-height:42px;padding:0 20px;font-size:14.5px;}

/* ============ 响应式 ============ */
@media (min-width:1440px){
  .container{max-width:1240px;}
}
@media (max-width:1199px){
  .container{max-width:1140px;}
  .quick-grid{grid-template-columns:repeat(2,1fr);}
  .rel-grid{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:repeat(2,1fr);}
  .faq-wrap{grid-template-columns:1fr;gap:28px;}
  .faq-side{position:static;}
  .faq-side nav{flex-direction:row;flex-wrap:wrap;}
  .faq-side nav a{border-left:0;border:1px solid var(--line);border-radius:var(--r-pill);padding:8px 14px;font-size:14px;background:#fff;}
}
@media (max-width:1024px){
  .dock-nav{display:none;}
  .burger{display:grid;}
  .dock{gap:10px;justify-content:space-between;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-visual{order:2;}
  .hero{padding:28px 0 56px;}
  .form-wrap{grid-template-columns:1fr;gap:28px;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .stats{grid-template-columns:repeat(2,1fr);}
  .stat:nth-child(2){border-right:0;}
  .stat:nth-child(1),.stat:nth-child(2){border-bottom:1px solid var(--line-2);}
}
@media (max-width:767px){
  body{padding-top:88px;padding-bottom:74px;font-size:16px;}
  .container{padding:0 16px;}
  .dock{top:12px;width:94vw;padding:8px 10px 8px 14px;}
  .dock.shrink{width:92vw;}
  .logo-text{font-size:15.5px;}
  .dock-actions .btn-primary{display:none;}
  .section{padding:56px 0;}
  h1{font-size:clamp(30px,8vw,34px);}
  .hero h1 em{margin-top:8px;}
  .hero-btns .btn{width:100%;}
  .quick-grid,.rel-grid,.steps{grid-template-columns:1fr;}
  .stats{grid-template-columns:1fr;}
  .stat{border-right:0;border-bottom:1px solid var(--line-2);}
  .stat:last-child{border-bottom:0;}
  .foot-grid{grid-template-columns:1fr;}
  .cta{padding:40px 22px;}
  .cta-btns .btn{width:100%;}
  .form-card,.form-aside{padding:22px;}
  .mobile-bar{display:flex;}
  .faq-q{font-size:16.5px;padding:16px;}
  .faq-a .inner{padding:0 16px 18px 18px;}
}
@media (max-width:420px){
  body{font-size:15.5px;}
  .logo-text{font-size:14.5px;}
  .trust-row{gap:14px;}
  .step{padding:22px 18px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
}