/* roulang page: index */
:root{
  --brand:#3a55f7;
  --brand-2:#6d4dfb;
  --accent:#0fbfa4;
  --ink:#0f1730;
  --ink-2:#4a5470;
  --ink-3:#7b849c;
  --line:#e3e8f5;
  --bg:#f5f7fd;
  --card:#ffffff;
  --grad:linear-gradient(135deg,#3a55f7 0%,#6d4dfb 100%);
  --grad-soft:linear-gradient(135deg,rgba(58,85,247,.10),rgba(109,77,251,.12));
  --r-xl:28px;
  --r-lg:22px;
  --r:16px;
  --r-sm:10px;
  --shadow-sm:0 4px 14px rgba(23,36,84,.06);
  --shadow:0 14px 40px rgba(23,36,84,.10);
  --wrap:1240px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0}
h1,h2,h3,h4{margin:0;line-height:1.35;font-weight:800;letter-spacing:.2px}
button{font:inherit}
[id]{scroll-margin-top:92px}
:focus-visible{outline:3px solid rgba(58,85,247,.45);outline-offset:2px;border-radius:8px}

.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.94);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:16px;min-height:72px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:38px;height:38px;border-radius:12px;background:var(--grad);color:#fff;
  display:grid;place-items:center;font-size:16px;flex:0 0 auto;
  box-shadow:0 8px 18px rgba(58,85,247,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;min-width:0}
.brand-text strong{font-size:15.5px;letter-spacing:.2px;white-space:nowrap}
.brand-text small{font-size:11px;color:var(--ink-3);white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:6px}
.main-nav a{
  padding:8px 14px;border-radius:999px;font-size:14.5px;font-weight:600;
  color:var(--ink-2);transition:background .18s,color .18s;white-space:nowrap;
}
.main-nav a:hover{background:#eef2ff;color:var(--brand)}
.main-nav a.active{background:var(--grad-soft);color:var(--brand)}
.nav-search{position:relative;display:flex;align-items:center;margin-left:auto}
.nav-search i{position:absolute;left:13px;color:var(--ink-3);font-size:12.5px;pointer-events:none}
.nav-search input{
  width:210px;padding:9px 14px 9px 34px;border:1px solid var(--line);border-radius:999px;
  background:#f8faff;font-size:13.5px;color:var(--ink);transition:.2s;
}
.nav-search input:focus{background:#fff;border-color:#b9c5ff;box-shadow:0 0 0 4px rgba(58,85,247,.10);outline:none}
.header-cta{flex:0 0 auto}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 22px;border-radius:999px;font-weight:700;font-size:14.5px;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:transform .18s,box-shadow .18s,background .18s,color .18s,border-color .18s;
}
.btn-grad{background:var(--grad);color:#fff;box-shadow:0 10px 24px rgba(58,85,247,.28)}
.btn-grad:hover{color:#fff;transform:translateY(-2px);box-shadow:0 16px 32px rgba(58,85,247,.36)}
.btn-grad:active{transform:translateY(0);box-shadow:0 8px 18px rgba(58,85,247,.28)}
.btn-ghost{background:#fff;color:var(--brand);border-color:#cfd8ff}
.btn-ghost:hover{background:#f2f5ff;border-color:#aab9ff;transform:translateY(-2px)}
.btn-lg{padding:14px 28px;font-size:15.5px}

/* ---------- hero ---------- */
.hero{
  position:relative;padding:58px 0 64px;overflow:hidden;
  background:
    radial-gradient(1100px 520px at 10% -10%,rgba(109,77,251,.16),transparent 62%),
    radial-gradient(900px 460px at 90% -4%,rgba(15,191,164,.14),transparent 64%),
    #ffffff;
  border-bottom:1px solid var(--line);
}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.12fr) minmax(0,.88fr);gap:46px;align-items:center}
.pill{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;
  background:#fff;border:1px solid #dbe3ff;color:var(--brand);font-size:12.8px;font-weight:700;
  box-shadow:var(--shadow-sm);
}
.hero h1{font-size:clamp(1.8rem,3.05vw,2.8rem);margin:16px 0 16px;line-height:1.28}
.hero-lead{color:var(--ink-2);font-size:15.3px;line-height:1.9;max-width:640px}
.hero-points{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px 18px;margin-top:22px}
.hero-points li{display:flex;gap:9px;font-size:13.8px;color:var(--ink-2);align-items:flex-start;line-height:1.65}
.hero-points i{color:var(--accent);margin-top:5px;font-size:12.5px;flex:0 0 auto}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-trust{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
.chip{
  font-size:12px;font-weight:700;color:var(--ink-2);background:#f1f4fc;
  border-radius:999px;padding:6px 12px;border:1px solid #e8edf9;
}
.hero-panel{
  background:#fff;border:1px solid var(--line);border-radius:26px;
  box-shadow:var(--shadow);padding:22px;position:relative;
}
.hero-panel::before{
  content:"";position:absolute;left:22px;right:22px;top:0;height:4px;border-radius:0 0 8px 8px;
  background:var(--grad);
}
.panel-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:14px;border-bottom:1px dashed var(--line)}
.panel-head h2{font-size:15px}
.badge-soft{background:var(--grad-soft);color:var(--brand);font-size:11.5px;font-weight:800;padding:5px 11px;border-radius:999px;white-space:nowrap}
.module-list{display:grid;gap:10px;margin-top:14px}
.module-item{
  display:flex;gap:12px;align-items:flex-start;padding:12px;border-radius:14px;
  background:#f8faff;border:1px solid #edf1fb;transition:.2s;
}
.module-item:hover{background:#fff;border-color:#d9e1ff;box-shadow:var(--shadow-sm);transform:translateY(-1px)}
.module-ico{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:var(--grad);color:#fff;font-size:13px;flex:0 0 auto;
}
.module-item strong{display:block;font-size:13.8px;margin-bottom:2px}
.module-item p{font-size:12.5px;color:var(--ink-3);line-height:1.6}
.panel-foot{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}

/* ---------- doc shell ---------- */
.doc-shell{display:grid;grid-template-columns:236px minmax(0,1fr);gap:42px;align-items:start;padding:34px 0 10px}
.doc-side{
  position:sticky;top:92px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-lg);padding:18px 16px;box-shadow:var(--shadow-sm);
}
.doc-side h2{font-size:12.5px;color:var(--ink-3);letter-spacing:1px;margin-bottom:10px;font-weight:800}
.doc-side a{
  display:block;font-size:13.3px;color:var(--ink-2);padding:7px 10px;border-radius:10px;
  border-left:2px solid transparent;transition:.18s;
}
.doc-side a:hover{background:#f4f7ff;color:var(--brand);border-left-color:var(--brand)}
.doc-main{min-width:0}
.doc-main > .block{padding:38px 0;border-top:1px dashed var(--line)}
.doc-main > .block:first-child{border-top:0;padding-top:6px}
.block-head{max-width:740px;margin-bottom:26px}
.block-head h2{font-size:clamp(1.28rem,2vw,1.72rem);margin-bottom:10px}
.block-head p{color:var(--ink-2);font-size:14.5px;line-height:1.85}

/* ---------- grids & cards ---------- */
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.grid-2 > *,.grid-3 > *,.grid-4 > *{min-width:0}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r);
  padding:22px;box-shadow:var(--shadow-sm);
  transition:transform .2s,box-shadow .2s,border-color .2s;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#d5ddff}
.card h3{font-size:15.8px;margin-bottom:8px}
.card p{font-size:13.8px;color:var(--ink-2);line-height:1.75}
.card-ico{
  width:42px;height:42px;border-radius:13px;display:grid;place-items:center;
  font-size:16px;color:#fff;background:var(--grad);margin-bottom:14px;
}
.card-ico.teal{background:linear-gradient(135deg,#16c9a5,#0fbfa4)}
.card-ico.amber{background:linear-gradient(135deg,#f7a53a,#f0713a)}
.card-ico.sky{background:linear-gradient(135deg,#38a8f7,#2f6ef5)}

/* ---------- pain ---------- */
.pain-list{display:grid;gap:14px}
.pain-item{
  display:grid;grid-template-columns:52px minmax(0,1fr) minmax(0,1.05fr);gap:18px;align-items:center;
  background:#fff;border:1px solid var(--line);border-radius:var(--r);
  padding:18px 20px;box-shadow:var(--shadow-sm);transition:.2s;
}
.pain-item:hover{border-color:#d5ddff;box-shadow:var(--shadow)}
.pain-num{font-size:19px;font-weight:900;color:var(--brand);opacity:.7;letter-spacing:1px}
.pain-item h3{font-size:14.8px}
.pain-fix{font-size:13.5px;color:var(--ink-2);background:#f5f8ff;border-radius:12px;padding:10px 14px;line-height:1.7}
.pain-fix strong{color:var(--brand)}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:24px;box-shadow:var(--shadow-sm);transition:.2s}
.step:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#d5ddff}
.step-num{
  width:36px;height:36px;border-radius:12px;background:var(--grad);color:#fff;
  font-weight:800;display:grid;place-items:center;margin-bottom:14px;font-size:14.5px;
}
.step h3{font-size:15.5px;margin-bottom:8px}
.step p{font-size:13.8px;color:var(--ink-2);line-height:1.75}

/* ---------- download ---------- */
.download-wrap{
  position:relative;overflow:hidden;color:#fff;border-radius:var(--r-xl);padding:40px;
  background:linear-gradient(135deg,#1b2a6b 0%,#3a55f7 56%,#6d4dfb 100%);
  box-shadow:0 24px 50px rgba(38,58,170,.28);
}
.download-wrap::after{
  content:"";position:absolute;width:340px;height:340px;right:-110px;top:-140px;border-radius:50%;
  background:rgba(255,255,255,.10);pointer-events:none;
}
.download-wrap::before{
  content:"";position:absolute;width:220px;height:220px;left:-90px;bottom:-120px;border-radius:50%;
  background:rgba(255,255,255,.07);pointer-events:none;
}
.dl-head{position:relative;z-index:1;max-width:720px;margin-bottom:26px}
.dl-head h2{font-size:clamp(1.3rem,2.1vw,1.78rem);margin-bottom:10px}
.dl-head p{font-size:14.3px;color:rgba(255,255,255,.82);line-height:1.8}
.dl-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;position:relative;z-index:1}
.dl-card{
  background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.22);
  border-radius:18px;padding:22px;transition:.2s;min-width:0;
}
.dl-card:hover{background:rgba(255,255,255,.17);transform:translateY(-3px)}
.dl-card .dl-ico{
  width:40px;height:40px;border-radius:12px;background:rgba(255,255,255,.18);
  display:grid;place-items:center;font-size:16px;margin-bottom:12px;
}
.dl-card h3{font-size:15.5px;color:#fff;margin-bottom:6px}
.dl-card p{font-size:12.8px;color:rgba(255,255,255,.78);margin-bottom:16px;line-height:1.7}
.dl-btn{
  display:inline-flex;align-items:center;gap:8px;background:#fff;color:#2b3ec9;
  font-weight:800;font-size:13.8px;padding:11px 18px;border-radius:999px;transition:.2s;
}
.dl-btn:hover{background:#eef2ff;color:#1f2fae;transform:translateX(2px)}
.dl-note{position:relative;z-index:1;margin-top:18px;font-size:12.5px;color:rgba(255,255,255,.72)}

/* ---------- compare ---------- */
.compare{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.compare-col{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:24px;box-shadow:var(--shadow-sm)}
.compare-col.after{border-color:#c9d5ff;box-shadow:var(--shadow)}
.compare-col h3{font-size:15px;margin-bottom:12px;display:flex;align-items:center;gap:9px}
.compare-col li{
  display:flex;gap:10px;font-size:13.8px;color:var(--ink-2);
  padding:9px 0;border-bottom:1px dashed #eef1f9;line-height:1.7;
}
.compare-col li:last-child{border-bottom:0;padding-bottom:0}
.compare-col li i{margin-top:5px;font-size:12px;flex:0 0 auto}
.compare-col.before li i{color:#f0713a}
.compare-col.after li i{color:var(--accent)}

/* ---------- specs ---------- */
.spec-list{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:8px 24px;box-shadow:var(--shadow-sm)}
.spec-row{display:grid;grid-template-columns:180px minmax(0,1fr);gap:18px;padding:15px 0;border-bottom:1px dashed #eef1f9}
.spec-row:last-child{border-bottom:0}
.spec-row dt{font-size:13.8px;color:var(--ink-3);font-weight:700}
.spec-row dd{margin:0;font-size:13.8px;color:var(--ink-2);line-height:1.7}

/* ---------- security ---------- */
.notice{
  display:flex;gap:14px;align-items:flex-start;background:#fff7ed;border:1px solid #ffd9ac;
  border-radius:var(--r);padding:18px 20px;margin-bottom:18px;
}
.notice i{color:#e07a1f;font-size:16px;margin-top:3px;flex:0 0 auto}
.notice p{font-size:13.6px;color:#8a5316;line-height:1.75}

/* ---------- faq ---------- */
.faq{display:grid;gap:12px}
.faq details{
  background:#fff;border:1px solid var(--line);border-radius:14px;padding:0 20px;
  box-shadow:var(--shadow-sm);transition:.2s;
}
.faq details[open]{border-color:#c9d5ff;box-shadow:var(--shadow)}
.faq summary{
  cursor:pointer;font-weight:700;font-size:14.8px;padding:16px 0;list-style:none;
  display:flex;justify-content:space-between;gap:14px;align-items:center;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:19px;color:var(--brand);font-weight:700;line-height:1;transition:transform .2s}
.faq details[open] summary::after{content:"−"}
.faq p{padding:0 0 18px;font-size:13.8px;color:var(--ink-2);line-height:1.8}

/* ---------- news ---------- */
.news-layout{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(0,1fr);gap:24px;align-items:start}
.news-list{display:grid;gap:14px}
.news-card{
  display:block;background:#fff;border:1px solid var(--line);border-radius:var(--r);
  padding:20px;box-shadow:var(--shadow-sm);transition:.2s;
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--shadow);border-color:#d5ddff}
.news-meta{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-bottom:8px;font-size:12px;color:var(--ink-3)}
.news-cat{background:var(--grad-soft);color:var(--brand);font-weight:700;padding:3px 10px;border-radius:999px}
.news-card h3{font-size:15.2px;margin-bottom:6px;line-height:1.5}
.news-card p{font-size:13.4px;color:var(--ink-2);line-height:1.72}
.empty-note{
  background:#fff;border:1px dashed var(--line);border-radius:var(--r);
  padding:26px;color:var(--ink-3);font-size:13.8px;text-align:center;
}
.news-side{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:22px;box-shadow:var(--shadow-sm)}
.news-side h3{font-size:15px;margin-bottom:10px}
.news-side a{
  display:block;font-size:13.4px;color:var(--ink-2);padding:10px 0;
  border-bottom:1px dashed #eef1f9;transition:.18s;line-height:1.65;
}
.news-side a:last-child{border-bottom:0}
.news-side a:hover{color:var(--brand);padding-left:4px}

/* ---------- final cta ---------- */
.final-cta{
  background:var(--grad-soft);border:1px solid #dbe3ff;border-radius:var(--r-xl);
  padding:34px;display:flex;align-items:center;justify-content:space-between;gap:26px;flex-wrap:wrap;
}
.final-cta h2{font-size:clamp(1.2rem,1.9vw,1.55rem);margin-bottom:8px}
.final-cta p{font-size:13.9px;color:var(--ink-2);max-width:620px;line-height:1.8}

/* ---------- footer ---------- */
.site-footer{background:#0d1530;color:#c6cde0;margin-top:36px;padding:52px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:36px;padding-bottom:34px}
.footer-brand .brand-mark{box-shadow:none}
.footer-brand .brand-text strong{color:#fff}
.footer-brand .brand-text small{color:#8b97b8}
.footer-brand p{font-size:13.3px;color:#8d99b8;margin-top:14px;line-height:1.85;max-width:360px}
.footer-col h3{font-size:13.5px;color:#fff;margin-bottom:12px;letter-spacing:.5px}
.footer-col a{display:block;font-size:13.3px;color:#a5aec8;padding:6px 0;transition:.18s}
.footer-col a:hover{color:#fff}
.friend-links{
  border-top:1px solid rgba(255,255,255,.10);padding:22px 0;
  display:flex;flex-wrap:wrap;gap:10px 18px;align-items:baseline;
}
.friend-links h3{font-size:13.5px;color:#fff;margin:0 6px 0 0;flex:0 0 auto}
.friend-list{display:flex;flex-wrap:wrap;gap:10px 18px;min-width:0}
.friend-list a{font-size:13px;color:#a5aec8;transition:.18s;word-break:keep-all}
.friend-list a:hover{color:#fff}
.copyright{
  border-top:1px solid rgba(255,255,255,.10);padding:18px 0 24px;
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:12.5px;color:#8b97b8;
}

/* ---------- responsive ---------- */
@media (max-width:1150px){
  .doc-shell{grid-template-columns:1fr;gap:0}
  .doc-side{display:none}
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .hero-grid{grid-template-columns:1fr;gap:34px}
  .hero-lead{max-width:none}
}
@media (max-width:992px){
  .header-inner{flex-wrap:wrap;gap:10px;padding-top:12px;padding-bottom:10px;min-height:0}
  .main-nav{order:4;width:100%;margin-left:0;overflow-x:auto;gap:4px;padding-bottom:2px}
  .nav-search{margin-left:auto}
  .news-layout{grid-template-columns:1fr}
  .grid-3,.steps,.dl-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .pain-item{grid-template-columns:46px minmax(0,1fr)}
  .pain-fix{grid-column:1 / -1}
  .spec-row{grid-template-columns:130px minmax(0,1fr)}
}
@media (max-width:768px){
  .nav-search{display:none}
  .header-cta{margin-left:auto}
  .grid-2,.grid-3,.grid-4,.steps,.dl-grid,.compare,.footer-grid{grid-template-columns:1fr}
  .doc-main > .block{padding:30px 0}
  .section{padding:44px 0}
  .download-wrap{padding:26px 22px;border-radius:22px}
  .final-cta{padding:26px 22px;border-radius:22px}
  .spec-list{padding:4px 18px}
  .hero-points{grid-template-columns:1fr}
  .footer-grid{gap:26px}
}
@media (max-width:520px){
  .wrap{padding:0 16px}
  .brand-text small{display:none}
  .hero{padding:34px 0 42px}
  .hero h1{font-size:1.62rem}
  .btn-lg{padding:12px 20px;font-size:14.5px}
  .hero-actions .btn{flex:1 1 46%}
  .card,.step,.dl-card,.news-card{padding:18px}
  .pain-item{padding:16px 16px}
  .spec-row{grid-template-columns:1fr;gap:4px}
  .copyright{flex-direction:column;gap:6px}
}

/* roulang page: article */
:root{
  --brand:#3a55f7;
  --brand-2:#6d4dfb;
  --accent:#0fbfa4;
  --ink:#0f1730;
  --ink-2:#4a5470;
  --ink-3:#7b849c;
  --line:#e3e8f5;
  --bg:#f5f7fd;
  --card:#ffffff;
  --grad:linear-gradient(135deg,#3a55f7 0%,#6d4dfb 100%);
  --grad-soft:linear-gradient(135deg,rgba(58,85,247,.10),rgba(109,77,251,.12));
  --r-xl:28px;
  --r-lg:22px;
  --r:16px;
  --r-sm:10px;
  --shadow-sm:0 4px 14px rgba(23,36,84,.06);
  --shadow:0 14px 40px rgba(23,36,84,.10);
  --wrap:1240px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:.2px}
p{margin:0}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 20px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.94);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:16px;min-height:72px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:38px;height:38px;border-radius:12px;background:var(--grad);color:#fff;
  display:grid;place-items:center;font-size:16px;flex:0 0 auto;
  box-shadow:0 8px 18px rgba(58,85,247,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;min-width:0}
.brand-text strong{font-size:15.5px;letter-spacing:.2px;white-space:nowrap}
.brand-text small{font-size:11px;color:var(--ink-3);white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:6px}
.main-nav a{
  padding:8px 14px;border-radius:999px;font-size:14.5px;font-weight:600;
  color:var(--ink-2);transition:background .18s,color .18s;white-space:nowrap;
}
.main-nav a:hover{background:#eef2ff;color:var(--brand)}
.main-nav a.active{background:var(--grad-soft);color:var(--brand)}
.nav-search{position:relative;display:flex;align-items:center;margin-left:auto}
.nav-search i{position:absolute;left:13px;color:var(--ink-3);font-size:12.5px;pointer-events:none}
.nav-search input{
  width:210px;padding:9px 14px 9px 34px;border:1px solid var(--line);border-radius:999px;
  background:#f8faff;font-size:13.5px;color:var(--ink);transition:.2s;
}
.nav-search input:focus{background:#fff;border-color:#b9c5ff;box-shadow:0 0 0 4px rgba(58,85,247,.10);outline:none}
.header-cta{flex:0 0 auto}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 22px;border-radius:999px;font-weight:700;font-size:14.5px;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:transform .18s,box-shadow .18s,background .18s,color .18s,border-color .18s;
}
.btn-grad{background:var(--grad);color:#fff;box-shadow:0 10px 24px rgba(58,85,247,.28)}
.btn-grad:hover{color:#fff;transform:translateY(-2px);box-shadow:0 16px 32px rgba(58,85,247,.36)}
.btn-grad:active{transform:translateY(0);box-shadow:0 8px 18px rgba(58,85,247,.28)}
.btn-ghost{background:#fff;color:var(--brand);border-color:#cfd8ff}
.btn-ghost:hover{background:#f2f5ff;border-color:#aab9ff;transform:translateY(-2px);color:var(--brand)}
.btn-lg{padding:14px 28px;font-size:15.5px}
.btn:focus-visible{outline:3px solid rgba(58,85,247,.35);outline-offset:2px}

/* ---------- shared bits ---------- */
.pill{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;
  background:#fff;border:1px solid #dbe3ff;color:var(--brand);font-size:12.8px;font-weight:700;
  box-shadow:var(--shadow-sm);
}
.chip{
  font-size:12px;font-weight:700;color:var(--ink-2);background:#f1f4fc;
  border-radius:999px;padding:6px 12px;border:1px solid #e8edf9;display:inline-block;
}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r);
  padding:22px;box-shadow:var(--shadow-sm);transition:transform .2s,box-shadow .2s,border-color .2s;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow);border-color:#d5deff}
.sec-head{max-width:760px;margin-bottom:26px}
.sec-head h2{font-size:clamp(1.3rem,2.1vw,1.72rem);line-height:1.4}
.sec-head p{color:var(--ink-2);font-size:14.8px;margin-top:10px}

/* ---------- article band ---------- */
.article-band{
  position:relative;overflow:hidden;
  background:
    radial-gradient(1000px 460px at 8% -20%,rgba(109,77,251,.17),transparent 62%),
    radial-gradient(820px 420px at 92% -14%,rgba(15,191,164,.15),transparent 64%),
    #ffffff;
  border-bottom:1px solid var(--line);
  padding:26px 0 42px;
}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12.8px;color:var(--ink-3);margin-bottom:22px}
.crumbs a{color:var(--ink-2);transition:color .18s}
.crumbs a:hover{color:var(--brand)}
.crumbs i{font-size:10px;color:#c2c9dd}
.crumbs .crumb-now{color:var(--brand);font-weight:700;max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.band-inner{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,.65fr);gap:38px;align-items:start}
.band-main{min-width:0}
.article-tag{
  display:inline-flex;align-items:center;gap:7px;font-size:12.5px;font-weight:800;
  color:var(--brand);background:#fff;border:1px solid #dbe3ff;border-radius:999px;
  padding:6px 14px;box-shadow:var(--shadow-sm);
}
.article-title{
  font-size:clamp(1.5rem,2.9vw,2.28rem);
  line-height:1.36;margin:16px 0 16px;
  overflow-wrap:break-word;word-break:normal;
}
.article-meta{display:flex;flex-wrap:wrap;gap:10px 20px;font-size:13px;color:var(--ink-3);align-items:center}
.article-meta span{display:inline-flex;align-items:center;gap:7px}
.article-meta i{color:#a8b2cd}
.band-quote{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:24px 24px 24px 26px;box-shadow:var(--shadow);
}
.band-quote::before{
  content:"";position:absolute;left:0;top:22px;bottom:22px;width:5px;border-radius:6px;background:var(--grad);
}
.band-quote .quote-label{font-size:12px;font-weight:800;color:var(--brand);letter-spacing:1px;margin-bottom:10px;text-transform:uppercase}
.band-quote p{font-size:14px;line-height:1.9;color:var(--ink-2)}

/* ---------- layout ---------- */
.article-layout{
  display:grid;grid-template-columns:minmax(0,264px) minmax(0,1fr);
  gap:34px;padding:44px 0 10px;align-items:start;
}
.doc-side{position:sticky;top:92px;display:grid;gap:16px;min-width:0}
.side-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r);
  padding:18px;box-shadow:var(--shadow-sm);
}
.side-title{
  font-size:13.5px;font-weight:800;color:var(--ink);margin-bottom:12px;
  display:flex;align-items:center;gap:8px;
}
.side-title i{color:var(--brand);font-size:12.5px}
.side-links{display:grid;gap:2px}
.side-links a{
  display:flex;align-items:center;gap:8px;font-size:13.4px;color:var(--ink-2);
  padding:8px 10px;border-radius:10px;border-left:2px solid transparent;
  transition:background .18s,color .18s,border-color .18s;
}
.side-links a:hover{background:#f4f7ff;color:var(--brand);border-left-color:var(--brand)}
.side-links a i{font-size:11px;color:#b3bcd4}
.side-dl{display:grid;gap:8px}
.side-dl a{
  display:flex;align-items:center;justify-content:space-between;gap:8px;
  font-size:13.2px;font-weight:700;color:var(--ink-2);background:#f8faff;
  border:1px solid #edf1fb;border-radius:12px;padding:9px 12px;transition:.18s;
}
.side-dl a:hover{background:#fff;border-color:#d5deff;color:var(--brand);transform:translateY(-1px)}
.side-dl a i{color:var(--brand);font-size:12px}
.side-note{font-size:12.6px;color:var(--ink-3);line-height:1.8;background:#fff8ef;border:1px solid #f6e3c8;border-radius:var(--r);padding:16px}
.side-note strong{display:block;color:#a06b12;font-size:13px;margin-bottom:6px}

.article-main{min-width:0;display:grid;gap:26px}
.article-body{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:34px;box-shadow:var(--shadow-sm);
}
.cms-content{font-size:16px;line-height:1.95;color:#2b3350;overflow-wrap:break-word}
.cms-content > *:first-child{margin-top:0}
.cms-content h2{
  font-size:1.3rem;line-height:1.5;margin:34px 0 14px;padding-left:13px;
  border-left:4px solid var(--brand);
}
.cms-content h3{font-size:1.1rem;line-height:1.6;margin:26px 0 10px;color:var(--ink)}
.cms-content h4{font-size:1rem;margin:22px 0 8px}
.cms-content p{margin:0 0 16px}
.cms-content ul,.cms-content ol{margin:0 0 18px;padding-left:22px;list-style:disc}
.cms-content ol{list-style:decimal}
.cms-content li{margin-bottom:8px}
.cms-content img{max-width:100%;height:auto;border-radius:14px;margin:18px 0;box-shadow:var(--shadow-sm)}
.cms-content blockquote{
  margin:20px 0;padding:16px 20px;background:#f4f7ff;border-left:4px solid #b9c5ff;
  border-radius:0 14px 14px 0;color:var(--ink-2);font-size:15px;
}
.cms-content blockquote p:last-child{margin-bottom:0}
.cms-content a{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.cms-content a:hover{color:var(--brand-2)}
.cms-content table{width:100%;border-collapse:collapse;margin:18px 0;font-size:14.5px}
.cms-content th,.cms-content td{border:1px solid var(--line);padding:10px 12px;text-align:left;vertical-align:top}
.cms-content th{background:#f4f7ff;font-weight:800}
.cms-content pre{
  background:#0f1730;color:#e6ebff;padding:16px 18px;border-radius:14px;
  overflow-x:auto;font-size:13.5px;line-height:1.7;margin:18px 0;
}
.cms-content code{background:#f1f4fc;color:#32407a;padding:2px 6px;border-radius:6px;font-size:13.5px}
.cms-content pre code{background:transparent;color:inherit;padding:0}
.cms-content hr{border:0;border-top:1px dashed var(--line);margin:26px 0}

.empty-state{text-align:center;padding:44px 18px}
.empty-state .empty-ico{
  width:64px;height:64px;border-radius:20px;background:var(--grad-soft);color:var(--brand);
  display:grid;place-items:center;font-size:24px;margin:0 auto 18px;
}
.empty-state h2{font-size:1.25rem;margin-bottom:10px}
.empty-state p{color:var(--ink-2);font-size:14.5px;margin-bottom:20px}

/* ---------- feature strip ---------- */
.feature-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.feature-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r);
  padding:20px;box-shadow:var(--shadow-sm);min-width:0;
  transition:transform .2s,box-shadow .2s,border-color .2s;
}
.feature-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#d5deff}
.feature-ico{
  width:42px;height:42px;border-radius:13px;display:grid;place-items:center;
  background:var(--grad-soft);color:var(--brand);font-size:16px;margin-bottom:14px;
}
.feature-card h3{font-size:15px;line-height:1.5;margin-bottom:8px}
.feature-card p{font-size:13.4px;color:var(--ink-2);line-height:1.8}

/* ---------- download ---------- */
.dl-panel{
  position:relative;overflow:hidden;border-radius:var(--r-xl);
  background:var(--grad);color:#fff;padding:38px 36px;
  box-shadow:0 22px 50px rgba(58,85,247,.28);
}
.dl-panel::after{
  content:"";position:absolute;right:-60px;top:-70px;width:280px;height:280px;border-radius:50%;
  background:rgba(255,255,255,.12);
}
.dl-panel::before{
  content:"";position:absolute;left:-40px;bottom:-90px;width:220px;height:220px;border-radius:50%;
  background:rgba(255,255,255,.08);
}
.dl-inner{position:relative;z-index:1;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);gap:30px;align-items:center}
.dl-copy h2{font-size:clamp(1.25rem,2vw,1.6rem);line-height:1.45;color:#fff}
.dl-copy p{font-size:14.4px;line-height:1.9;color:rgba(255,255,255,.86);margin-top:12px}
.dl-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.dl-tags span{
  font-size:12px;font-weight:700;background:rgba(255,255,255,.18);
  border:1px solid rgba(255,255,255,.26);color:#fff;border-radius:999px;padding:5px 12px;
}
.dl-btns{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.dl-btn{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;
  background:rgba(255,255,255,.96);color:#25306b;border-radius:16px;padding:16px 12px;
  font-weight:800;font-size:13.8px;text-align:center;min-width:0;
  transition:transform .18s,box-shadow .18s,background .18s;
}
.dl-btn i{font-size:19px;color:var(--brand)}
.dl-btn small{display:block;font-size:11.5px;font-weight:600;color:#6a7495;word-break:break-all}
.dl-btn:hover{transform:translateY(-3px);background:#fff;box-shadow:0 16px 30px rgba(12,20,60,.24);color:#25306b}
.dl-btn:focus-visible{outline:3px solid rgba(255,255,255,.7);outline-offset:3px}

/* ---------- faq ---------- */
.faq-wrap{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:10px 26px;box-shadow:var(--shadow-sm)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:0}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:18px 0;font-size:15px;font-weight:800;color:var(--ink);transition:color .18s;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand)}
.faq-item summary .faq-ico{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;background:#f1f4fc;color:var(--brand);
  display:grid;place-items:center;font-size:11px;transition:transform .2s,background .2s;
}
.faq-item[open] summary .faq-ico{transform:rotate(45deg);background:var(--grad-soft)}
.faq-item .faq-body{padding:0 0 18px;font-size:14.4px;color:var(--ink-2);line-height:1.9}

/* ---------- cta ---------- */
.cta-band{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-xl);
  padding:32px 34px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;
  box-shadow:var(--shadow-sm);
}
.cta-band h2{font-size:clamp(1.15rem,1.9vw,1.45rem);line-height:1.5}
.cta-band p{font-size:14px;color:var(--ink-2);margin-top:8px;max-width:620px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- footer ---------- */
.site-footer{background:#0d1330;color:#c3cbe4;padding:56px 0 28px;margin-top:58px}
.footer-grid{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(0,1fr) minmax(0,1fr);gap:34px}
.footer-brand .brand-text strong{color:#fff}
.footer-brand .brand-text small{color:#8d97b8}
.footer-brand p{font-size:13.3px;line-height:1.9;color:#a9b3d1;margin-top:16px;max-width:520px}
.footer-col h3{font-size:13.8px;color:#fff;margin-bottom:14px}
.footer-col a{display:block;font-size:13.4px;color:#a9b3d1;padding:5px 0;transition:color .18s,transform .18s}
.footer-col a:hover{color:#fff;transform:translateX(2px)}
.friend-links{border-top:1px solid rgba(255,255,255,.10);margin-top:34px;padding-top:22px}
.friend-links h3{font-size:13.5px;color:#fff;margin-bottom:12px}
.friend-list{display:flex;flex-wrap:wrap;gap:10px}
.friend-list a{
  font-size:12.8px;color:#a9b3d1;background:rgba(255,255,255,.06);
  padding:6px 12px;border-radius:999px;transition:.18s;
}
.friend-list a:hover{color:#fff;background:rgba(255,255,255,.14)}
.copyright{
  border-top:1px solid rgba(255,255,255,.10);margin-top:24px;padding-top:18px;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:12.5px;color:#8d97b8;
}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .nav-search{display:none}
  .main-nav{margin-left:auto;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none}
  .main-nav::-webkit-scrollbar{display:none}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:24px}
  .doc-side{position:static;order:2;grid-template-columns:repeat(2,minmax(0,1fr));display:grid}
  .article-main{order:1}
  .band-inner{grid-template-columns:minmax(0,1fr);gap:24px}
  .feature-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .dl-inner{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
}
@media (max-width:768px){
  body{font-size:15.5px}
  .brand-text small{display:none}
  .header-cta{display:none}
  .header-inner{min-height:64px;gap:10px}
  .main-nav a{padding:7px 11px;font-size:13.6px}
  .article-band{padding:20px 0 32px}
  .article-body{padding:24px 20px}
  .cms-content{font-size:15.4px}
  .cms-content h2{font-size:1.18rem}
  .doc-side{grid-template-columns:minmax(0,1fr)}
  .dl-panel{padding:28px 22px}
  .dl-btns{grid-template-columns:repeat(3,minmax(0,1fr));gap:9px}
  .dl-btn{padding:13px 8px;font-size:12.8px}
  .dl-btn small{font-size:10.5px}
  .cta-band{padding:24px 22px}
  .faq-wrap{padding:6px 18px}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:26px}
  .cms-content table{display:block;overflow-x:auto;white-space:nowrap}
}
@media (max-width:520px){
  .wrap{padding:0 15px}
  .article-title{font-size:1.32rem}
  .brand-text strong{font-size:13.8px}
  .main-nav a{padding:6px 9px;font-size:12.6px}
  .feature-grid{grid-template-columns:minmax(0,1fr)}
  .dl-btns{grid-template-columns:minmax(0,1fr)}
  .dl-btn{flex-direction:row;justify-content:flex-start;gap:10px;text-align:left;padding:13px 16px}
  .dl-btn small{margin-left:auto;text-align:right}
  .article-meta{font-size:12.2px;gap:8px 14px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
}

/* roulang page: category1 */
:root{
  --brand:#3a55f7;
  --brand-2:#6d4dfb;
  --accent:#0fbfa4;
  --ink:#0f1730;
  --ink-2:#4a5470;
  --ink-3:#7b849c;
  --line:#e3e8f5;
  --bg:#f5f7fd;
  --card:#ffffff;
  --grad:linear-gradient(135deg,#3a55f7 0%,#6d4dfb 100%);
  --grad-soft:linear-gradient(135deg,rgba(58,85,247,.10),rgba(109,77,251,.12));
  --r-xl:28px;
  --r-lg:22px;
  --r:16px;
  --r-sm:10px;
  --shadow-sm:0 4px 14px rgba(23,36,84,.06);
  --shadow:0 14px 40px rgba(23,36,84,.10);
  --wrap:1240px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit}
h1,h2,h3,h4,p,ul,ol,dl,dd{margin:0}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 22px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.94);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:16px;min-height:72px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:38px;height:38px;border-radius:12px;background:var(--grad);color:#fff;
  display:grid;place-items:center;font-size:16px;flex:0 0 auto;
  box-shadow:0 8px 18px rgba(58,85,247,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;min-width:0}
.brand-text strong{font-size:15.5px;letter-spacing:.2px;white-space:nowrap}
.brand-text small{font-size:11px;color:var(--ink-3);white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:6px}
.main-nav a{
  padding:8px 14px;border-radius:999px;font-size:14.5px;font-weight:600;
  color:var(--ink-2);transition:background .18s,color .18s;white-space:nowrap;
}
.main-nav a:hover{background:#eef2ff;color:var(--brand)}
.main-nav a.active{background:var(--grad-soft);color:var(--brand)}
.nav-search{position:relative;display:flex;align-items:center;margin-left:auto}
.nav-search i{position:absolute;left:13px;color:var(--ink-3);font-size:12.5px;pointer-events:none}
.nav-search input{
  width:210px;padding:9px 14px 9px 34px;border:1px solid var(--line);border-radius:999px;
  background:#f8faff;font-size:13.5px;color:var(--ink);transition:.2s;
}
.nav-search input:focus{background:#fff;border-color:#b9c5ff;box-shadow:0 0 0 4px rgba(58,85,247,.10);outline:none}
.header-cta{flex:0 0 auto}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 22px;border-radius:999px;font-weight:700;font-size:14.5px;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:transform .18s,box-shadow .18s,background .18s,color .18s,border-color .18s;
}
.btn-grad{background:var(--grad);color:#fff;box-shadow:0 10px 24px rgba(58,85,247,.28)}
.btn-grad:hover{color:#fff;transform:translateY(-2px);box-shadow:0 16px 32px rgba(58,85,247,.36)}
.btn-grad:active{transform:translateY(0);box-shadow:0 8px 18px rgba(58,85,247,.28)}
.btn-ghost{background:#fff;color:var(--brand);border-color:#cfd8ff}
.btn-ghost:hover{background:#f2f5ff;border-color:#aab9ff;transform:translateY(-2px);color:var(--brand)}
.btn-lg{padding:14px 28px;font-size:15.5px}
.btn:focus-visible,.main-nav a:focus-visible,.quick-card:focus-visible,.news-card:focus-visible{
  outline:3px solid rgba(58,85,247,.35);outline-offset:2px;
}

/* ---------- hero ---------- */
.cat-hero{
  position:relative;overflow:hidden;padding:54px 0 50px;border-bottom:1px solid var(--line);
  background:
    radial-gradient(940px 440px at 6% -18%,rgba(109,77,251,.17),transparent 62%),
    radial-gradient(780px 400px at 94% -12%,rgba(15,191,164,.15),transparent 64%),
    #ffffff;
}
.pill{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;
  background:#fff;border:1px solid #dbe3ff;color:var(--brand);font-size:12.8px;font-weight:700;
  box-shadow:var(--shadow-sm);
}
.cat-hero h1{font-size:clamp(1.75rem,2.9vw,2.55rem);line-height:1.3;margin:16px 0 14px;max-width:880px;letter-spacing:-.2px}
.cat-hero .lead{color:var(--ink-2);font-size:15.4px;line-height:1.95;max-width:840px}
.cat-points{display:flex;flex-wrap:wrap;gap:10px 20px;margin-top:20px;max-width:920px;list-style:none;padding:0}
.cat-points li{display:flex;gap:8px;align-items:flex-start;font-size:13.8px;color:var(--ink-2);line-height:1.65}
.cat-points i{color:var(--accent);margin-top:5px;font-size:12px;flex:0 0 auto}
.cat-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.quick-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-top:34px}
.quick-card{
  display:block;min-width:0;background:#fff;border:1px solid var(--line);border-radius:var(--r);
  padding:16px;box-shadow:var(--shadow-sm);
  transition:transform .2s,box-shadow .2s,border-color .2s;
}
.quick-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#cfd8ff}
.quick-card .qc-ico{
  width:34px;height:34px;border-radius:11px;background:var(--grad-soft);color:var(--brand);
  display:grid;place-items:center;font-size:14px;
}
.quick-card strong{display:block;font-size:14px;margin:9px 0 4px;line-height:1.5}
.quick-card span{display:block;font-size:12.6px;color:var(--ink-3);line-height:1.65}

/* ---------- sections ---------- */
.section{padding:58px 0}
.section.alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{max-width:790px;margin-bottom:30px}
.sec-tag{
  display:inline-flex;align-items:center;gap:8px;padding:5px 13px;border-radius:999px;
  background:var(--grad-soft);color:var(--brand);font-size:12.2px;font-weight:800;letter-spacing:.3px;
}
.sec-head h2{font-size:clamp(1.35rem,2.1vw,1.85rem);line-height:1.38;margin:12px 0 10px}
.sec-head p{color:var(--ink-2);font-size:14.6px;line-height:1.95}

/* ---------- feature cards ---------- */
.feature-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.feature-grid > *{min-width:0}
.feature-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:24px;
  box-shadow:var(--shadow-sm);position:relative;overflow:hidden;min-width:0;
  transition:transform .2s,box-shadow .2s,border-color .2s;
}
.feature-card::after{
  content:"";position:absolute;left:0;right:0;top:0;height:3px;background:var(--grad);
  opacity:0;transition:opacity .2s;
}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#d5ddff}
.feature-card:hover::after{opacity:1}
.fc-icon{
  width:44px;height:44px;border-radius:14px;background:var(--grad-soft);color:var(--brand);
  display:grid;place-items:center;font-size:17px;
}
.feature-card h3{font-size:16.5px;margin:14px 0 8px;line-height:1.5}
.feature-card p{font-size:13.9px;color:var(--ink-2);line-height:1.85}
.feature-card ul{margin-top:12px;display:grid;gap:7px;list-style:none;padding:0}
.feature-card li{display:flex;gap:8px;font-size:13px;color:var(--ink-2);line-height:1.7}
.feature-card li i{color:var(--accent);margin-top:5px;font-size:11px;flex:0 0 auto}

/* ---------- scene cards ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.scene-grid > *{min-width:0}
.scene-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:24px;
  box-shadow:var(--shadow-sm);min-width:0;transition:transform .2s,box-shadow .2s;
}
.scene-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.scene-top{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.scene-top .badge-soft{
  background:var(--grad-soft);color:var(--brand);font-size:11.5px;font-weight:800;
  padding:5px 11px;border-radius:999px;white-space:nowrap;
}
.scene-card h3{font-size:16px;line-height:1.5;margin:12px 0 8px}
.scene-card p{font-size:13.8px;color:var(--ink-2);line-height:1.85}
.scene-list{margin-top:14px;display:grid;gap:8px;list-style:none;padding:0}
.scene-list li{
  display:flex;gap:9px;font-size:13.2px;color:var(--ink-2);line-height:1.75;
  padding:9px 12px;border-radius:12px;background:#f8faff;border:1px solid #eef2fb;
}
.scene-list li i{color:var(--brand);margin-top:5px;font-size:11px;flex:0 0 auto}

/* ---------- steps ---------- */
.step-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.step-grid > *{min-width:0}
.step-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:22px;
  min-width:0;box-shadow:var(--shadow-sm);transition:transform .2s,box-shadow .2s;
}
.step-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.step-no{
  width:34px;height:34px;border-radius:11px;background:var(--grad);color:#fff;
  font-weight:800;font-size:13.5px;display:grid;place-items:center;
  box-shadow:0 8px 18px rgba(58,85,247,.26);
}
.step-card h3{font-size:15.4px;margin:13px 0 7px;line-height:1.5}
.step-card p{font-size:13.6px;color:var(--ink-2);line-height:1.85}

/* ---------- spec cards ---------- */
.spec-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.spec-grid > *{min-width:0}
.spec-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:24px;
  box-shadow:var(--shadow-sm);min-width:0;
}
.spec-card h3{font-size:16px;margin-bottom:6px;line-height:1.5}
.spec-card > p{font-size:13.4px;color:var(--ink-3);line-height:1.8;margin-bottom:10px}
.spec-row{
  display:flex;flex-wrap:wrap;gap:6px 16px;justify-content:space-between;align-items:flex-start;
  padding:11px 0;border-bottom:1px dashed var(--line);
}
.spec-row:last-child{border-bottom:0;padding-bottom:0}
.spec-row dt{font-size:13.4px;font-weight:700;color:var(--ink);flex:0 0 auto;min-width:96px}
.spec-row dd{font-size:13.2px;color:var(--ink-2);line-height:1.8;flex:1 1 220px;min-width:0;margin:0}

/* ---------- faq ---------- */
.faq-list{display:grid;gap:12px;max-width:940px}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r);
  box-shadow:var(--shadow-sm);overflow:hidden;transition:border-color .2s,box-shadow .2s;
}
.faq-item:hover{border-color:#d5ddff;box-shadow:var(--shadow)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:17px 20px;font-weight:700;font-size:14.8px;
  display:flex;justify-content:space-between;align-items:center;gap:14px;line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary i{color:var(--brand);font-size:12.5px;flex:0 0 auto;transition:transform .22s}
.faq-item[open] summary i{transform:rotate(180deg)}
.faq-body{padding:0 20px 18px;color:var(--ink-2);font-size:14px;line-height:1.9}

/* ---------- news list ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.news-grid > *{min-width:0}
.news-card{
  display:flex;flex-direction:column;gap:10px;min-width:0;
  background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:20px;
  box-shadow:var(--shadow-sm);transition:transform .2s,box-shadow .2s,border-color .2s;
}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#cfd8ff}
.news-meta{display:flex;flex-wrap:wrap;gap:8px 12px;font-size:12px;color:var(--ink-3);align-items:center}
.news-meta .tag{
  background:var(--grad-soft);color:var(--brand);font-weight:800;font-size:11.5px;
  padding:3px 10px;border-radius:999px;white-space:nowrap;
}
.news-card h3{font-size:15.4px;line-height:1.6;color:var(--ink)}
.news-card p{font-size:13.2px;color:var(--ink-2);line-height:1.82}
.empty-note{
  background:#fff;border:1px dashed #cdd7f0;border-radius:var(--r);padding:26px;
  color:var(--ink-3);font-size:13.8px;text-align:center;
}

/* ---------- download ---------- */
.dl-band{
  position:relative;overflow:hidden;border-radius:var(--r-xl);color:#fff;
  background:linear-gradient(135deg,#1a2360 0%,#3a55f7 56%,#6d4dfb 100%);
  padding:42px 40px;box-shadow:0 24px 60px rgba(26,35,96,.26);
}
.dl-band::after{
  content:"";position:absolute;right:-90px;top:-90px;width:300px;height:300px;border-radius:50%;
  background:rgba(255,255,255,.09);pointer-events:none;
}
.dl-band::before{
  content:"";position:absolute;left:-70px;bottom:-110px;width:240px;height:240px;border-radius:50%;
  background:rgba(15,191,164,.18);pointer-events:none;
}
.dl-band h2{color:#fff;font-size:clamp(1.3rem,2vw,1.78rem);line-height:1.4;margin-bottom:10px;position:relative;z-index:1}
.dl-band p{color:rgba(255,255,255,.88);font-size:14.2px;line-height:1.92;max-width:660px;position:relative;z-index:1}
.dl-btns{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:26px;position:relative;z-index:1}
.dl-btn{
  display:flex;align-items:center;gap:12px;min-width:0;padding:16px 18px;border-radius:16px;
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.30);color:#fff;
  transition:transform .2s,background .2s,color .2s,box-shadow .2s,border-color .2s;
}
.dl-btn:hover{
  background:#fff;color:#2a3ac4;transform:translateY(-3px);
  box-shadow:0 16px 30px rgba(8,16,48,.26);border-color:#fff;
}
.dl-btn i{font-size:20px;flex:0 0 auto}
.dl-btn strong{display:block;font-size:14.5px;line-height:1.4}
.dl-btn span{display:block;font-size:12px;opacity:.85;line-height:1.5;word-break:break-word}

/* ---------- notice ---------- */
.notice{
  display:flex;gap:14px;align-items:flex-start;
  background:#f1fbf8;border-left:4px solid var(--accent);border-radius:14px;
  padding:18px 22px;color:var(--ink-2);font-size:13.6px;line-height:1.92;
}
.notice i{color:var(--accent);font-size:16px;margin-top:4px;flex:0 0 auto}
.notice strong{color:var(--ink)}

/* ---------- footer ---------- */
.site-footer{background:#0e1633;color:rgba(255,255,255,.72);padding:52px 0 26px;font-size:13.8px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:36px}
.footer-grid > *{min-width:0}
.footer-brand .brand-text strong{color:#fff}
.footer-brand .brand-text small{color:rgba(255,255,255,.55)}
.footer-brand p{margin-top:14px;line-height:1.92;font-size:13.4px;color:rgba(255,255,255,.66);max-width:480px}
.footer-col h3{font-size:14px;color:#fff;margin-bottom:12px}
.footer-col a{display:block;padding:5px 0;color:rgba(255,255,255,.7);font-size:13.4px;transition:color .18s,transform .18s}
.footer-col a:hover{color:#fff;transform:translateX(3px)}
.friend-links{margin-top:34px;padding-top:24px;border-top:1px solid rgba(255,255,255,.12)}
.friend-links h3{font-size:14px;color:#fff;margin-bottom:12px}
.friend-list{display:flex;flex-wrap:wrap;gap:10px 20px}
.friend-list a{color:rgba(255,255,255,.7);font-size:13.2px;transition:color .18s}
.friend-list a:hover{color:#fff}
.copyright{
  margin-top:28px;padding-top:18px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:space-between;
  font-size:12.8px;color:rgba(255,255,255,.5);
}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .nav-search{display:none}
  .quick-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .feature-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .news-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .step-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .footer-brand{grid-column:1 / -1}
}
@media (max-width:860px){
  .header-inner{flex-wrap:wrap;padding:10px 0;min-height:auto}
  .main-nav{order:3;width:100%;margin-left:0;overflow-x:auto;padding-bottom:2px}
  .header-cta{margin-left:auto}
  .dl-btns{grid-template-columns:1fr}
  .dl-band{padding:32px 24px}
}
@media (max-width:768px){
  .scene-grid,.spec-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .section{padding:46px 0}
  .cat-hero{padding:40px 0 38px}
  .sec-head{margin-bottom:24px}
}
@media (max-width:520px){
  .quick-grid,.feature-grid,.news-grid,.step-grid{grid-template-columns:1fr}
  .wrap{padding:0 16px}
  .brand-text small{display:none}
  .header-cta{padding:9px 16px;font-size:13.5px}
  .cat-actions .btn{width:100%}
  .dl-band{padding:26px 18px}
  .dl-btn{padding:14px 15px}
  .feature-card,.scene-card,.spec-card{padding:20px}
}