/* roulang page: index */
:root{
  --ink-900:#0A0A1A;
  --ink-800:#12122A;
  --ink-700:#1B1B3A;
  --star-500:#E9B44C;
  --star-600:#D19A2E;
  --aurora-500:#3ED0BE;
  --nebula-500:#7A5CFF;
  --sand-50:#F6F3EC;
  --sand-100:#EDE8DC;
  --txt-dark:#F2F0FF;
  --txt-dark-dim:#A8A6C8;
  --txt-light:#1A1730;
  --txt-light-dim:#5B5876;
  --ok:#4FB477;
  --alert:#E2704A;
  --line-dark:rgba(242,240,255,.10);
  --line-light:rgba(26,23,48,.10);
  --r-lg:16px;
  --r-md:12px;
  --r-sm:10px;
  --shadow-dark:0 24px 60px -20px rgba(122,92,255,.35);
  --shadow-light:0 10px 30px -12px rgba(20,16,48,.12);
  --mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Menlo,Consolas,monospace;
  --sans:system-ui,"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  --nav-h:68px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--txt-dark);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,h5,h6{margin:0;font-weight:650;line-height:1.25;letter-spacing:-.01em;color:inherit;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
a{color:inherit;text-decoration:none;transition:color .18s ease-out,border-color .18s ease-out,background-color .18s ease-out;}
img{max-width:100%;height:auto;display:block;}
button,input,textarea,select{font:inherit;color:inherit;margin:0;}
button{cursor:pointer;background:none;border:0;padding:0;}
time,.sy-num{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:0;}
:focus-visible{outline:2px solid var(--star-500);outline-offset:2px;border-radius:6px;}

.sy-container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
@media (min-width:1441px){.sy-container{max-width:1280px;}}
@media (max-width:1023px){.sy-container{padding:0 24px;}}
@media (max-width:639px){.sy-container{padding:0 20px;}}

/* ---------- 导航 ---------- */
.sy-header{
  position:sticky;top:0;z-index:60;
  background:rgba(10,10,26,.88);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid rgba(233,180,76,.16);
  transition:box-shadow .2s ease-out;
}
.sy-header.is-scrolled{box-shadow:0 14px 40px -22px rgba(0,0,0,.9);}
.sy-nav{
  display:flex;align-items:center;gap:20px;
  height:var(--nav-h);
}
.sy-logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.sy-logo-mark{
  width:32px;height:32px;border-radius:9px;
  display:grid;place-items:center;
  background:linear-gradient(150deg,rgba(233,180,76,.22),rgba(122,92,255,.22));
  border:1px solid rgba(233,180,76,.32);
}
.sy-logo-mark svg{width:18px;height:18px;}
.sy-logo-text{
  font-size:17px;font-weight:700;letter-spacing:-.02em;
  white-space:nowrap;
  color:var(--txt-dark);
}
.sy-logo-text em{font-style:normal;color:var(--star-500);}
.sy-nav-links{display:flex;align-items:center;gap:4px;margin-left:8px;flex:1 1 auto;}
.sy-nav-link{
  position:relative;
  padding:8px 12px;border-radius:8px;
  font-size:14.5px;color:var(--txt-dark-dim);
  white-space:nowrap;
}
.sy-nav-link:hover{color:var(--txt-dark);background:rgba(242,240,255,.05);}
.sy-nav-link.is-active{color:var(--star-500);font-weight:600;}
.sy-nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--star-500);border-radius:2px;
}
.sy-nav-right{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.sy-search{
  position:relative;display:flex;align-items:center;gap:8px;
  width:250px;height:38px;padding:0 10px;
  background:rgba(6,6,18,.82);
  border:1px solid var(--line-dark);
  border-radius:var(--r-sm);
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.sy-search:focus-within{border-color:var(--star-500);box-shadow:0 0 0 2px rgba(233,180,76,.35);}
.sy-search svg{width:15px;height:15px;flex:0 0 auto;color:var(--txt-dark-dim);}
.sy-search input{
  flex:1 1 auto;width:100%;border:0;background:transparent;outline:none;
  font-size:13.5px;color:var(--txt-dark);
}
.sy-search input::placeholder{color:rgba(168,166,200,.7);}
.sy-search kbd{
  font-family:var(--mono);font-size:11px;line-height:1;
  padding:4px 6px;border-radius:5px;
  background:rgba(242,240,255,.08);
  border:1px solid var(--line-dark);
  color:var(--txt-dark-dim);
}
.sy-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:42px;padding:0 20px;
  border-radius:var(--r-sm);
  font-size:14.5px;font-weight:600;letter-spacing:-.01em;
  border:1px solid transparent;
  transition:transform .18s ease-out,box-shadow .18s ease-out,background-color .18s ease-out,border-color .18s ease-out,color .18s ease-out;
  white-space:nowrap;
}
.sy-btn-primary{background:var(--star-500);color:#16122B;}
.sy-btn-primary:hover{background:var(--star-600);transform:translateY(-1px);box-shadow:0 12px 26px -14px rgba(233,180,76,.85);}
.sy-btn-ghost{border-color:rgba(62,208,190,.45);color:var(--aurora-500);background:transparent;}
.sy-btn-ghost:hover{background:rgba(62,208,190,.1);border-color:var(--aurora-500);transform:translateY(-1px);}
.sy-btn-dark{background:#16122B;color:var(--sand-50);}
.sy-btn-dark:hover{transform:translateY(-1px);box-shadow:0 14px 28px -16px rgba(20,16,48,.7);}
.sy-btn-sm{height:36px;padding:0 14px;font-size:13.5px;}
.sy-icon-btn{
  width:36px;height:36px;border-radius:50%;
  display:grid;place-items:center;
  border:1px solid var(--line-dark);
  color:var(--txt-dark-dim);
  transition:border-color .18s ease-out,color .18s ease-out,transform .18s ease-out;
}
.sy-icon-btn:hover{border-color:var(--star-500);color:var(--star-500);transform:translateY(-1px);}
.sy-icon-btn svg{width:16px;height:16px;}
.sy-burger{display:none;width:38px;height:38px;border-radius:var(--r-sm);border:1px solid var(--line-dark);place-items:center;}
.sy-burger span{display:block;width:16px;height:2px;background:var(--txt-dark);border-radius:2px;position:relative;}
.sy-burger span::before,.sy-burger span::after{content:"";position:absolute;left:0;width:16px;height:2px;background:var(--txt-dark);border-radius:2px;}
.sy-burger span::before{top:-5px;}
.sy-burger span::after{top:5px;}

.sy-drawer{
  display:none;
  position:fixed;inset:var(--nav-h) 0 0 0;
  background:var(--ink-900);
  border-top:1px solid var(--line-dark);
  padding:20px 20px 40px;
  z-index:55;
  overflow-y:auto;
}
.sy-drawer.is-open{display:block;}
.sy-drawer a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:44px;padding:0 4px;
  font-size:16px;color:var(--txt-dark);
  border-bottom:1px solid var(--line-dark);
}
.sy-drawer a.is-active{color:var(--star-500);font-weight:600;}
.sy-drawer .sy-btn{width:100%;margin-top:20px;}

@media (max-width:1023px){
  .sy-nav-links{display:none;}
  .sy-burger{display:grid;}
  .sy-search{width:180px;}
}
@media (max-width:767px){
  .sy-search{display:none;}
  .sy-nav-right .sy-btn-primary{display:none;}
}

/* ---------- Hero ---------- */
.sy-hero{
  position:relative;
  overflow:hidden;
  border-bottom:1px solid var(--line-dark);
}
.sy-hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
}
.sy-hero-bg::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(680px 420px at 78% 22%,rgba(233,180,76,.16),transparent 68%),
    linear-gradient(100deg,rgba(10,10,26,.95) 0%,rgba(10,10,26,.82) 46%,rgba(10,10,26,.42) 100%);
}
.sy-hero-inner{position:relative;z-index:2;padding:104px 0 88px;}
.sy-eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  height:30px;padding:0 12px;border-radius:999px;
  background:rgba(62,208,190,.12);
  border:1px solid rgba(62,208,190,.32);
  color:var(--aurora-500);
  font-size:12px;letter-spacing:.04em;
  margin-bottom:20px;
}
.sy-eyebrow .sy-dot{width:6px;height:6px;border-radius:50%;background:var(--aurora-500);}
.sy-hero h1{
  font-size:clamp(28px,4.1vw,50px);
  font-weight:700;
  line-height:1.2;
  max-width:15em;
  margin-bottom:18px;
}
.sy-hero h1 em{font-style:normal;color:var(--star-500);}
.sy-hero-sub{
  font-size:18px;line-height:1.75;color:var(--txt-dark-dim);
  max-width:34em;margin-bottom:32px;
}
.sy-hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:36px;}
.sy-hero-stats{
  display:flex;flex-wrap:wrap;gap:0;
  border-top:1px solid var(--line-dark);
  padding-top:22px;
}
.sy-hero-stat{
  padding:0 22px;
  border-left:1px solid var(--line-dark);
}
.sy-hero-stat:first-child{padding-left:0;border-left:0;}
.sy-hero-stat b{
  display:block;font-family:var(--mono);font-size:22px;font-weight:600;
  color:var(--star-500);line-height:1.2;
}
.sy-hero-stat span{font-size:13px;color:var(--txt-dark-dim);}

.sy-hero-card{
  position:relative;
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid rgba(242,240,255,.14);
  box-shadow:var(--shadow-dark);
  aspect-ratio:4/5;
  background:var(--ink-800);
}
.sy-hero-card img{width:100%;height:100%;object-fit:cover;}
.sy-hero-card::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(10,10,26,.15) 0%,rgba(10,10,26,.88) 100%);
}
.sy-hero-card-meta{
  position:absolute;left:18px;right:18px;bottom:16px;z-index:3;
}
.sy-hero-card-meta strong{display:block;font-size:16px;font-weight:600;margin-bottom:6px;}
.sy-hero-card-meta span{
  font-family:var(--mono);font-size:12px;color:var(--txt-dark-dim);letter-spacing:.06em;
}
.sy-corner{
  position:absolute;top:14px;left:14px;z-index:3;
  font-family:var(--mono);font-size:11px;letter-spacing:.1em;
  color:rgba(242,240,255,.78);
  padding:5px 9px;border-radius:6px;
  background:rgba(10,10,26,.6);
  border:1px solid rgba(242,240,255,.16);
}
@media (max-width:1023px){
  .sy-hero-inner{padding:72px 0 64px;}
  .sy-hero-card{aspect-ratio:16/10;margin-top:40px;}
}
@media (max-width:639px){
  .sy-hero-inner{padding:52px 0 48px;}
  .sy-hero-sub{font-size:16px;}
  .sy-hero-stat{padding:0 16px;}
  .sy-hero-stat b{font-size:18px;}
}

/* ---------- 通用板块 ---------- */
.sy-section{padding:96px 0;position:relative;}
.sy-section--tight{padding-top:64px;padding-bottom:64px;}
.sy-section--light{background:var(--sand-50);color:var(--txt-light);}
.sy-section--light .sy-lead,
.sy-section--light .sy-eyebrow-sm{color:var(--txt-light-dim);}
.sy-section-head{margin-bottom:44px;max-width:52em;}
.sy-eyebrow-sm{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--mono);font-size:12px;letter-spacing:.14em;
  color:var(--star-500);text-transform:uppercase;
  margin-bottom:12px;
}
.sy-section-head h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:12px;}
.sy-lead{font-size:16px;line-height:1.8;color:var(--txt-dark-dim);}
@media (max-width:1023px){.sy-section{padding:72px 0;}}
@media (max-width:639px){.sy-section{padding:56px 0;}.sy-section-head{margin-bottom:32px;}}

/* ---------- 状态面板 ---------- */
.sy-status{
  background:var(--ink-800);
  border:1px solid var(--line-dark);
  border-radius:var(--r-lg);
  padding:28px;
  box-shadow:var(--shadow-dark);
}
.sy-status-head{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  flex-wrap:wrap;margin-bottom:22px;
}
.sy-status-head h2{font-size:19px;}
.sy-live{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--mono);font-size:12px;letter-spacing:.08em;
  color:var(--txt-dark-dim);
}
.sy-dot{width:7px;height:7px;border-radius:50%;display:inline-block;}
.sy-dot--ok{background:var(--ok);box-shadow:0 0 0 3px rgba(79,180,119,.18);}
.sy-dot--hot{background:var(--alert);box-shadow:0 0 0 3px rgba(226,112,74,.2);}
.sy-status-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line-dark);border-radius:var(--r-md);overflow:hidden;}
.sy-status-cell{
  background:var(--ink-800);
  padding:20px 18px;
}
.sy-status-cell b{
  display:block;font-family:var(--mono);font-size:24px;font-weight:600;color:var(--star-500);
  line-height:1.2;margin-bottom:6px;
}
.sy-status-cell span{font-size:13px;color:var(--txt-dark-dim);display:block;line-height:1.7;}
@media (max-width:1023px){.sy-status-grid{grid-template-columns:repeat(2,1fr);}}
@media (max-width:639px){
  .sy-status{padding:20px;}
  .sy-status-grid{grid-template-columns:1fr;}
}

/* ---------- 合集目录 ---------- */
.sy-col-card{
  display:flex;flex-direction:column;
  height:100%;
  background:var(--ink-800);
  border:1px solid var(--line-dark);
  border-radius:var(--r-lg);
  overflow:hidden;
  transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.sy-col-card:hover{transform:translateY(-2px);border-color:rgba(233,180,76,.4);box-shadow:var(--shadow-dark);}
.sy-col-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--ink-700);}
.sy-col-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out;}
.sy-col-card:hover .sy-col-media img{transform:scale(1.04);}
.sy-col-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,10,26,.05),rgba(10,10,26,.66));}
.sy-col-index{
  position:absolute;top:14px;left:14px;z-index:2;
  font-family:var(--mono);font-size:12px;letter-spacing:.1em;
  padding:4px 8px;border-radius:6px;
  background:rgba(233,180,76,.16);
  border:1px solid rgba(233,180,76,.42);
  color:var(--star-500);
}
.sy-col-body{padding:22px 22px 20px;display:flex;flex-direction:column;gap:8px;flex:1 1 auto;}
.sy-col-body h3{font-size:20px;}
.sy-col-desc{font-size:14.5px;line-height:1.7;color:var(--txt-dark-dim);}
.sy-col-foot{
  margin-top:auto;padding-top:16px;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  border-top:1px solid var(--line-dark);
}
.sy-col-meta{font-family:var(--mono);font-size:12px;color:var(--txt-dark-dim);}
.sy-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--star-500);font-size:13.5px;font-weight:600;transition:transform .2s ease-out;}
.sy-col-card:hover .sy-arrow{transform:translateX(4px);}
.sy-col-card.is-wide .sy-col-body{flex-direction:row;flex-wrap:wrap;align-items:flex-start;gap:24px;}
.sy-col-card.is-wide .sy-col-text{flex:1 1 260px;}
.sy-col-card.is-wide .sy-col-foot{width:100%;}

/* ---------- 最新信息 ---------- */
.sy-latest-lead{
  display:flex;flex-direction:column;
  height:100%;
  background:var(--ink-800);
  border:1px solid var(--line-dark);
  border-radius:var(--r-lg);
  overflow:hidden;
  transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.sy-latest-lead:hover{transform:translateY(-2px);border-color:rgba(233,180,76,.4);box-shadow:var(--shadow-dark);}
.sy-latest-lead .sy-col-media{aspect-ratio:16/9;}
.sy-latest-lead .sy-col-body{padding:24px;gap:12px;}
.sy-latest-lead h3{font-size:22px;line-height:1.35;}
.sy-latest-lead p{font-size:15px;color:var(--txt-dark-dim);line-height:1.8;}
.sy-badge{
  display:inline-flex;align-items:center;
  height:24px;padding:0 10px;border-radius:999px;
  font-size:12px;line-height:1;
  background:rgba(62,208,190,.12);
  color:var(--aurora-500);
  border:1px solid rgba(62,208,190,.26);
  white-space:nowrap;
}
.sy-badge--gold{background:rgba(233,180,76,.12);color:var(--star-500);border-color:rgba(233,180,76,.3);}
.sy-latest-list{
  height:100%;
  background:var(--ink-800);
  border:1px solid var(--line-dark);
  border-radius:var(--r-lg);
  padding:8px 20px;
  display:flex;flex-direction:column;
}
.sy-latest-item{
  display:flex;gap:14px;align-items:flex-start;
  padding:16px 0;
  border-bottom:1px solid var(--line-dark);
  transition:transform .18s ease-out;
}
.sy-latest-item:last-child{border-bottom:0;}
.sy-latest-item:hover{transform:translateX(3px);}
.sy-latest-item:hover h3{color:var(--star-500);}
.sy-thumb{
  width:88px;height:64px;flex:0 0 auto;
  border-radius:8px;overflow:hidden;background:var(--ink-700);
}
.sy-thumb img{width:100%;height:100%;object-fit:cover;}
.sy-latest-item-body{min-width:0;flex:1 1 auto;}
.sy-latest-item h3{
  font-size:15px;font-weight:600;line-height:1.5;margin-bottom:6px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .18s ease-out;
}
.sy-latest-item-foot{display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.sy-latest-item-foot time{font-size:12px;color:var(--txt-dark-dim);}
.sy-latest-more{
  margin-top:18px;display:inline-flex;align-items:center;gap:6px;
  font-size:14px;color:var(--star-500);font-weight:600;
}
.sy-latest-more:hover{gap:10px;}
.sy-empty{
  border:1px dashed rgba(233,180,76,.45);
  border-radius:var(--r-lg);
  padding:52px 24px;
  text-align:center;
  background:rgba(233,180,76,.04);
}
.sy-empty svg{width:34px;height:34px;color:var(--star-500);margin:0 auto 14px;}
.sy-empty p{font-size:15px;color:var(--txt-dark-dim);margin-bottom:20px;}

/* ---------- 精选条目 ---------- */
.sy-pick{
  display:flex;gap:16px;align-items:stretch;
  height:100%;
  padding:18px;
  background:var(--ink-800);
  border:1px solid var(--line-dark);
  border-radius:var(--r-md);
  transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.sy-pick:hover{transform:translateY(-2px);border-color:rgba(233,180,76,.4);box-shadow:var(--shadow-dark);}
.sy-pick-media{width:96px;flex:0 0 auto;border-radius:8px;overflow:hidden;background:var(--ink-700);}
.sy-pick-media img{width:100%;height:100%;object-fit:cover;}
.sy-pick h3{font-size:16.5px;line-height:1.45;margin-bottom:8px;}
.sy-pick p{font-size:13.5px;color:var(--txt-dark-dim);line-height:1.7;margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.sy-pick-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.sy-pick-meta time{font-size:12px;color:var(--txt-dark-dim);}

/* ---------- 步骤流程 ---------- */
.sy-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.sy-step{
  position:relative;
  padding:26px 22px;
  background:var(--ink-800);
  border:1px solid var(--line-dark);
  border-radius:var(--r-md);
  transition:transform .2s ease-out,border-color .2s ease-out;
}
.sy-step:hover{transform:translateY(-2px);border-color:rgba(62,208,190,.4);}
.sy-step-num{
  font-family:var(--mono);font-size:12px;letter-spacing:.14em;
  color:var(--star-500);display:block;margin-bottom:14px;
}
.sy-step h3{font-size:17px;margin-bottom:10px;}
.sy-step p{font-size:14px;color:var(--txt-dark-dim);line-height:1.75;}
@media (max-width:1023px){.sy-steps{grid-template-columns:repeat(2,1fr);}}
@media (max-width:639px){.sy-steps{grid-template-columns:1fr;gap:16px;}}

/* ---------- 数据条 ---------- */
.sy-metrics{
  display:grid;grid-template-columns:repeat(3,1fr);
  gap:1px;background:var(--line-light);
  border:1px solid var(--line-light);
  border-radius:var(--r-lg);overflow:hidden;
}
.sy-metric{background:var(--sand-50);padding:30px 26px;}
.sy-metric b{
  display:block;font-family:var(--mono);font-size:34px;font-weight:600;
  color:var(--txt-light);line-height:1.1;margin-bottom:8px;
}
.sy-metric b i{font-style:normal;font-size:16px;color:var(--txt-light-dim);margin-left:4px;}
.sy-metric span{font-size:14px;color:var(--txt-light-dim);}
@media (max-width:767px){.sy-metrics{grid-template-columns:1fr;}}

/* ---------- FAQ ---------- */
.sy-faq{max-width:900px;margin:0 auto;display:flex;flex-direction:column;gap:12px;}
.sy-faq-item{
  background:#fff;
  border:1px solid var(--line-light);
  border-radius:var(--r-md);
  overflow:hidden;
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.sy-faq-item[open]{border-color:rgba(233,180,76,.6);box-shadow:var(--shadow-light);}
.sy-faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;
  font-size:16.5px;font-weight:600;color:var(--txt-light);
  line-height:1.7;
}
.sy-faq-item summary::-webkit-details-marker{display:none;}
.sy-faq-item summary::after{
  content:"";flex:0 0 auto;
  width:9px;height:9px;
  border-right:2px solid var(--star-500);
  border-bottom:2px solid var(--star-500);
  transform:rotate(45deg);
  transition:transform .2s ease-out;
}
.sy-faq-item[open] summary::after{transform:rotate(225deg);}
.sy-faq-answer{
  padding:0 22px 20px 22px;
  font-size:15px;line-height:1.85;color:var(--txt-light-dim);
  border-left:3px solid var(--star-500);
  margin-left:22px;
  padding-left:18px;
}

/* ---------- CTA 带 ---------- */
.sy-cta{
  background:linear-gradient(180deg,var(--sand-50),var(--sand-100));
  color:var(--txt-light);
  border-radius:var(--r-lg);
  padding:56px 48px;
  position:relative;
  overflow:hidden;
}
.sy-cta::before{
  content:"";position:absolute;left:48px;right:48px;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(233,180,76,.85),transparent);
}
.sy-cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.sy-cta h2{font-size:clamp(21px,2.4vw,27px);margin-bottom:10px;}
.sy-cta p{font-size:15px;color:var(--txt-light-dim);max-width:36em;}
.sy-cta-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap;}
.sy-icon-btn--light{border-color:var(--line-light);color:var(--txt-light-dim);}
.sy-icon-btn--light:hover{border-color:var(--star-500);color:var(--star-600);}
@media (max-width:767px){
  .sy-cta{padding:36px 24px;}
  .sy-cta-inner{flex-direction:column;align-items:flex-start;}
  .sy-cta-actions{width:100%;}
  .sy-cta-actions .sy-btn{flex:1 1 auto;}
}

/* ---------- 页脚 ---------- */
.sy-footer{
  background:var(--ink-900);
  border-top:1px solid rgba(233,180,76,.16);
  padding:64px 0 28px;
}
.sy-footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.4fr;
  gap:40px;
  padding-bottom:40px;
  border-bottom:1px solid var(--line-dark);
}
.sy-footer h3{
  font-size:14px;font-weight:600;letter-spacing:.06em;
  color:var(--txt-dark);margin-bottom:18px;
}
.sy-footer-brand .sy-logo{margin-bottom:16px;}
.sy-footer-brand p{font-size:14px;color:var(--txt-dark-dim);line-height:1.8;max-width:30em;}
.sy-footer-links{display:flex;flex-direction:column;gap:11px;}
.sy-footer-links a{font-size:14px;color:var(--txt-dark-dim);}
.sy-footer-links a:hover{color:var(--star-500);}
.sy-subscribe{display:flex;gap:10px;margin-top:16px;}
.sy-subscribe input{
  flex:1 1 auto;min-width:0;height:42px;
  padding:0 14px;border-radius:var(--r-sm);
  background:rgba(6,6,18,.85);
  border:1px solid var(--line-dark);
  color:var(--txt-dark);font-size:14px;outline:none;
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.sy-subscribe input::placeholder{color:rgba(168,166,200,.7);}
.sy-subscribe input:focus{border-color:var(--star-500);box-shadow:0 0 0 2px rgba(233,180,76,.35);}
.sy-form-tip{font-size:12.5px;color:var(--txt-dark-dim);margin-top:10px;line-height:1.7;}
.sy-footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding-top:24px;
}
.sy-footer-bottom p{font-size:13px;color:var(--txt-dark-dim);}
@media (max-width:1023px){
  .sy-footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:639px){
  .sy-footer{padding:48px 0 24px;}
  .sy-footer-grid{grid-template-columns:1fr;gap:28px;}
  .sy-subscribe{flex-direction:column;}
  .sy-subscribe .sy-btn{width:100%;}
}

/* ---------- 返回顶部 ---------- */
.sy-top-btn{
  position:fixed;right:22px;bottom:22px;z-index:50;
  width:44px;height:44px;border-radius:50%;
  display:grid;place-items:center;
  background:rgba(233,180,76,.92);
  color:#16122B;
  box-shadow:0 16px 34px -16px rgba(233,180,76,.9);
  opacity:0;pointer-events:none;
  transition:opacity .2s ease-out,transform .2s ease-out;
}
.sy-top-btn.is-show{opacity:1;pointer-events:auto;}
.sy-top-btn:hover{transform:translateY(-2px);}
@media (max-width:639px){.sy-top-btn{right:14px;bottom:14px;}}

@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category1 */
:root{
  --ink-900:#0A0A1A;
  --ink-800:#12122A;
  --ink-700:#1B1B3A;
  --star-500:#E9B44C;
  --star-600:#D19A2E;
  --aurora-500:#3ED0BE;
  --nebula-500:#7A5CFF;
  --sand-50:#F6F3EC;
  --sand-100:#EDE8DC;
  --txt:#F2F0FF;
  --txt-dim:#A8A6C8;
  --txt-ink:#1A1730;
  --txt-ink-dim:#5B5876;
  --line:rgba(242,240,255,.10);
  --line-strong:rgba(242,240,255,.18);
  --line-sand:rgba(26,23,48,.10);
  --r-lg:16px;
  --r-md:12px;
  --r-sm:10px;
  --shadow-dark:0 24px 60px -20px rgba(122,92,255,.35);
  --shadow-light:0 10px 30px -12px rgba(20,16,48,.12);
  --mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Menlo,Consolas,monospace;
  --sans:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--txt);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  letter-spacing:0;
  font-weight:400;
  overflow-x:hidden;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
h1,h2,h3,h4{font-weight:600;letter-spacing:-0.01em;line-height:1.25;}
ul,ol{padding:0;list-style:none;}
a{color:var(--star-500);text-decoration:none;}
img{max-width:100%;display:block;}
button,input{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--star-500);outline-offset:3px;border-radius:4px;}

/* 容器 */
.sy-container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
@media (min-width:1441px){.sy-container{max-width:1280px;}}

/* 通用文字 */
.sy-eyebrow{
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.12em;
  color:var(--star-500);
  text-transform:uppercase;
  margin-bottom:16px;
}
.sy-section{padding:96px 0;position:relative;}
.sy-section--tight{padding:72px 0;}
.sy-section-head{max-width:760px;margin-bottom:48px;}
.sy-section-head h2{font-size:28px;margin-bottom:16px;}
.sy-section-sub{font-size:16px;color:var(--txt-dim);line-height:1.85;}

/* 按钮 */
.sy-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;line-height:1.2;
  border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease-out,box-shadow .18s ease-out,background .18s ease-out,border-color .18s ease-out,color .18s ease-out;
  white-space:nowrap;
}
.sy-btn-primary{background:var(--star-500);color:#1A1730;box-shadow:0 10px 26px -14px rgba(233,180,76,.9);}
.sy-btn-primary:hover{background:#F0C264;transform:translateY(-1px);color:#1A1730;}
.sy-btn-ghost{border-color:rgba(62,208,190,.55);color:var(--aurora-500);background:transparent;}
.sy-btn-ghost:hover{background:rgba(62,208,190,.10);border-color:var(--aurora-500);transform:translateY(-1px);color:var(--aurora-500);}
.sy-btn-quiet{border-color:var(--line-strong);color:var(--txt);background:rgba(242,240,255,.03);}
.sy-btn-quiet:hover{border-color:rgba(233,180,76,.6);color:var(--star-500);transform:translateY(-1px);}
.sy-btn-sm{padding:9px 16px;font-size:14px;}
.sy-btn-ink{background:var(--txt-ink);color:var(--sand-50);}
.sy-btn-ink:hover{background:#2A2550;transform:translateY(-1px);color:var(--sand-50);}

/* 徽章 */
.sy-badge{
  display:inline-block;font-size:12px;line-height:1.6;
  padding:2px 10px;border-radius:999px;
  background:rgba(62,208,190,.12);color:var(--aurora-500);
  border:1px solid rgba(62,208,190,.28);
}
.sy-badge--gold{background:rgba(233,180,76,.12);color:var(--star-500);border-color:rgba(233,180,76,.28);}

/* 导航 */
.sy-header{
  position:sticky;top:0;z-index:70;
  background:rgba(10,10,26,.88);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid rgba(233,180,76,.16);
  transition:box-shadow .2s ease-out;
}
.sy-header.is-scrolled{box-shadow:0 14px 40px -22px rgba(0,0,0,.9);}
.sy-header-inner{height:68px;display:flex;align-items:center;gap:24px;}
.sy-logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;color:var(--txt);}
.sy-logo-mark{width:26px;height:26px;display:inline-flex;align-items:center;justify-content:center;flex-shrink:0;}
.sy-logo-mark svg{width:24px;height:24px;}
.sy-logo-text{font-size:17px;font-weight:700;letter-spacing:-.01em;white-space:nowrap;}
.sy-logo-text em{font-style:normal;color:var(--star-500);margin-left:4px;font-weight:700;}
.sy-nav-links{display:flex;align-items:center;gap:4px;margin-left:8px;flex:1;}
.sy-nav-link{
  position:relative;display:inline-block;
  padding:10px 12px;font-size:14.5px;color:var(--txt-dim);
  border-radius:8px;transition:color .18s ease-out,background .18s ease-out;
}
.sy-nav-link:hover{color:var(--txt);background:rgba(242,240,255,.05);}
.sy-nav-link.is-active{color:var(--star-500);}
.sy-nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--star-500);border-radius:2px;
}
.sy-nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto;flex-shrink:0;}
.sy-search{
  display:flex;align-items:center;gap:8px;
  width:262px;height:40px;padding:0 12px;
  background:rgba(242,240,255,.05);
  border:1px solid var(--line);border-radius:var(--r-sm);
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.sy-search svg{width:16px;height:16px;flex-shrink:0;stroke:var(--txt-dim);}
.sy-search input{
  flex:1;min-width:0;background:transparent;border:0;outline:none;
  color:var(--txt);font-size:14px;
}
.sy-search input::placeholder{color:#7E7CA0;}
.sy-search:focus-within{border-color:var(--star-500);box-shadow:0 0 0 2px rgba(233,180,76,.28);}
.sy-search kbd{
  font-family:var(--mono);font-size:11px;color:var(--txt-dim);
  padding:2px 6px;border-radius:6px;border:1px solid var(--line);
  background:rgba(10,10,26,.7);
}
.sy-icon-btn{
  width:36px;height:36px;flex-shrink:0;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:50%;border:1px solid var(--line-strong);
  background:transparent;color:var(--txt-dim);cursor:pointer;
  transition:color .18s ease-out,border-color .18s ease-out,transform .18s ease-out;
}
.sy-icon-btn svg{width:16px;height:16px;stroke:currentColor;}
.sy-icon-btn:hover{color:var(--star-500);border-color:rgba(233,180,76,.6);transform:translateY(-1px);}
.sy-burger{display:none;width:38px;height:38px;border-radius:var(--r-sm);border:1px solid var(--line-strong);background:transparent;cursor:pointer;align-items:center;justify-content:center;}
.sy-burger svg{width:18px;height:18px;stroke:var(--txt);}

/* 抽屉 */
.sy-drawer{
  position:fixed;inset:0;z-index:90;
  background:var(--ink-900);
  padding:80px 24px 32px;
  transform:translateY(-102%);
  transition:transform .24s ease-out;
  display:flex;flex-direction:column;gap:8px;
  overflow-y:auto;
}
.sy-drawer.is-open{transform:translateY(0);}
.sy-drawer a.sy-drawer-link{
  display:block;min-height:44px;line-height:44px;
  padding:0 14px;border-radius:var(--r-sm);
  color:var(--txt);font-size:16px;border-bottom:1px solid var(--line);
}
.sy-drawer a.sy-drawer-link.is-active{color:var(--star-500);}
.sy-drawer .sy-btn{margin-top:20px;}
.sy-drawer-close{
  position:absolute;top:18px;right:22px;width:38px;height:38px;
  border-radius:50%;border:1px solid var(--line-strong);background:transparent;color:var(--txt);cursor:pointer;
}

/* 面包屑 */
.sy-breadcrumb{
  background:var(--ink-800);
  border-bottom:1px solid var(--line);
  font-size:13.5px;color:var(--txt-dim);
}
.sy-breadcrumb .sy-container{display:flex;align-items:center;gap:10px;height:52px;flex-wrap:wrap;}
.sy-breadcrumb a{color:var(--txt-dim);}
.sy-breadcrumb a:hover{color:var(--star-500);}
.sy-breadcrumb span[aria-current]{color:var(--txt);}
.sy-breadcrumb .sy-sep{color:#5B5876;}

/* 内页 Hero */
.sy-page-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);}
.sy-hero-bg{
  position:absolute;inset:0;
  background-image:linear-gradient(180deg,rgba(10,10,26,.92) 0%,rgba(10,10,26,.62) 55%,rgba(10,10,26,.94) 100%),url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  z-index:0;
}
.sy-hero-bg::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(circle at 78% 28%,rgba(233,180,76,.16),transparent 42%);
}
.sy-hero-inner{position:relative;z-index:1;padding:96px 32px 72px;max-width:860px;}
.sy-page-hero h1{font-size:44px;margin-bottom:20px;}
.sy-hero-sub{font-size:18px;color:#D8D6EE;max-width:660px;margin-bottom:32px;line-height:1.8;}
.sy-hero-actions{display:flex;flex-wrap:wrap;gap:14px;}
.sy-stats{
  display:flex;flex-wrap:wrap;gap:36px;
  margin-top:48px;padding-top:28px;border-top:1px solid var(--line);
}
.sy-stats li{display:flex;flex-direction:column;gap:2px;}
.sy-stat-num{font-family:var(--mono);font-size:24px;color:var(--star-500);line-height:1.2;}
.sy-stat-label{font-size:13px;color:var(--txt-dim);}

/* 网格 */
.sy-grid{display:grid;gap:32px;}
.sy-grid-2{grid-template-columns:repeat(2,minmax(0,1fr));}
.sy-grid-4{grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;}

/* 封面卡 */
.sy-cover-card{
  background:var(--ink-800);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  overflow:hidden;
  display:flex;flex-direction:column;
  transition:border-color .18s ease-out,box-shadow .18s ease-out,transform .18s ease-out;
}
.sy-cover-card:hover{border-color:rgba(233,180,76,.42);box-shadow:var(--shadow-dark);transform:translateY(-2px);}
.sy-cover-media{display:block;position:relative;overflow:hidden;aspect-ratio:16/9;background:var(--ink-700);}
.sy-cover-media img{width:100%;height:100%;object-fit:cover;transition:transform .22s ease-out;}
.sy-cover-card:hover .sy-cover-media img{transform:scale(1.04);}
.sy-cover-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(10,10,26,0) 40%,rgba(10,10,26,.72) 100%);
}
.sy-cover-body{padding:28px 28px 30px;display:flex;flex-direction:column;gap:12px;flex:1;}
.sy-num{font-family:var(--mono);font-size:13px;color:var(--star-500);letter-spacing:.14em;}
.sy-cover-body h3{font-size:22px;}
.sy-cover-body>p{font-size:15px;color:var(--txt-dim);line-height:1.8;}
.sy-link-list{margin-top:6px;border-top:1px solid var(--line);padding-top:14px;display:flex;flex-direction:column;gap:10px;}
.sy-link-list li{display:flex;align-items:flex-start;gap:10px;font-size:14.5px;}
.sy-link-list li::before{
  content:"";width:6px;height:6px;margin-top:9px;flex-shrink:0;
  background:var(--star-500);clip-path:polygon(50% 0,61% 38%,100% 50%,61% 62%,50% 100%,39% 62%,0 50%,39% 38%);
}
.sy-link-list a{color:var(--txt);border-bottom:1px solid transparent;transition:color .18s ease-out,border-color .18s ease-out;}
.sy-link-list a:hover{color:var(--star-500);border-color:rgba(233,180,76,.6);}

/* 入口清单 */
.sy-section--panel{background:var(--ink-800);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.sy-line-list{display:flex;flex-direction:column;}
.sy-line-item{
  display:grid;grid-template-columns:76px minmax(0,1fr) auto;
  gap:24px;align-items:center;
  padding:24px 0;border-bottom:1px solid var(--line);
  transition:background .18s ease-out;
}
.sy-line-item:first-child{border-top:1px solid var(--line);}
.sy-line-item:hover{background:rgba(242,240,255,.03);}
.sy-line-item .sy-line-no{font-family:var(--mono);font-size:15px;color:var(--star-500);}
.sy-line-item h3{font-size:17px;margin-bottom:4px;}
.sy-line-item p{font-size:14.5px;color:var(--txt-dim);}
.sy-line-item .sy-line-tag{justify-self:end;white-space:nowrap;}

/* 适用场景面板 */
.sy-panel-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.sy-panel{
  background:linear-gradient(160deg,rgba(27,27,58,.92),rgba(18,18,42,.92));
  border:1px solid var(--line);border-radius:var(--r-lg);
  padding:28px;
  transition:border-color .18s ease-out,transform .18s ease-out;
}
.sy-panel:hover{border-color:rgba(62,208,190,.42);transform:translateY(-2px);}
.sy-panel h3{font-size:18px;margin-bottom:10px;display:flex;align-items:center;gap:10px;}
.sy-panel h3 .sy-dot{width:8px;height:8px;border-radius:50%;background:var(--star-500);box-shadow:0 0 0 4px rgba(233,180,76,.16);flex-shrink:0;}
.sy-panel p{font-size:14.5px;color:var(--txt-dim);line-height:1.8;}

/* 线路走向 */
.sy-steps{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.sy-step{
  padding:28px 24px;border-right:1px solid var(--line);
  display:flex;flex-direction:column;gap:8px;
}
.sy-step:last-child{border-right:0;}
.sy-step .sy-step-no{font-family:var(--mono);font-size:13px;color:var(--aurora-500);letter-spacing:.12em;}
.sy-step h3{font-size:16px;}
.sy-step p{font-size:14px;color:var(--txt-dim);line-height:1.8;}

/* FAQ 浅色段 */
.sy-sand{background:var(--sand-50);color:var(--txt-ink);}
.sy-sand .sy-section-head h2{color:var(--txt-ink);}
.sy-sand .sy-section-sub{color:var(--txt-ink-dim);}
.sy-sand .sy-eyebrow{color:var(--star-600);}
.sy-faq{display:flex;flex-direction:column;gap:14px;}
.sy-faq-item{
  background:#FFFFFF;
  border:1px solid var(--line-sand);
  border-radius:var(--r-md);
  box-shadow:var(--shadow-light);
  overflow:hidden;
}
.sy-faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;gap:14px;
  padding:20px 24px;font-size:16.5px;font-weight:600;color:var(--txt-ink);
  border-left:3px solid transparent;
  transition:border-color .18s ease-out,background .18s ease-out;
}
.sy-faq-item summary::-webkit-details-marker{display:none;}
.sy-faq-item summary:hover{background:rgba(233,180,76,.06);}
.sy-faq-item[open] summary{border-left-color:var(--star-500);}
.sy-faq-icon{
  margin-left:auto;flex-shrink:0;width:18px;height:18px;
  display:inline-flex;align-items:center;justify-content:center;
  transition:transform .2s ease-out;color:var(--star-600);
}
.sy-faq-item[open] .sy-faq-icon{transform:rotate(90deg);}
.sy-faq-body{padding:0 24px 22px 41px;font-size:15px;line-height:1.85;color:var(--txt-ink-dim);}

/* 相关分类 */
.sy-rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.sy-rel-card{
  display:flex;flex-direction:column;gap:10px;
  padding:26px;border-radius:var(--r-lg);
  background:var(--ink-800);border:1px solid var(--line);
  transition:border-color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out;
}
.sy-rel-card:hover{border-color:rgba(233,180,76,.42);transform:translateY(-2px);box-shadow:var(--shadow-dark);}
.sy-rel-card h3{font-size:17px;color:var(--txt);}
.sy-rel-card p{font-size:14px;color:var(--txt-dim);}
.sy-rel-card .sy-arrow{font-family:var(--mono);font-size:13px;color:var(--star-500);transition:transform .18s ease-out;}
.sy-rel-card:hover .sy-arrow{transform:translateX(4px);}

/* CTA 带 */
.sy-cta-band{background:var(--sand-100);color:var(--txt-ink);border-top:1px solid var(--line-sand);border-bottom:1px solid var(--line-sand);}
.sy-cta-inner{
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  padding:64px 0;
}
.sy-cta-inner h2{font-size:26px;color:var(--txt-ink);margin-bottom:10px;}
.sy-cta-inner p{font-size:15px;color:var(--txt-ink-dim);max-width:560px;}
.sy-cta-actions{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.sy-cta-band .sy-icon-btn{border-color:var(--line-sand);color:var(--txt-ink-dim);background:#fff;}
.sy-cta-band .sy-icon-btn:hover{color:var(--star-600);border-color:var(--star-500);}

/* 分页 */
.sy-pager{display:flex;align-items:center;justify-content:center;gap:8px;flex-wrap:wrap;}
.sy-pager-item{
  min-width:40px;height:40px;padding:0 14px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:var(--r-sm);border:1px solid var(--line);
  font-family:var(--mono);font-size:14px;color:var(--txt-dim);
  transition:color .18s ease-out,border-color .18s ease-out,background .18s ease-out;
}
.sy-pager-item:hover{color:var(--star-500);border-color:rgba(233,180,76,.5);}
.sy-pager-item.is-current{background:var(--star-500);border-color:var(--star-500);color:#1A1730;font-weight:600;}
.sy-pager-item.is-disabled{opacity:.4;cursor:not-allowed;}

/* 页脚 */
.sy-footer{background:var(--ink-900);border-top:1px solid rgba(233,180,76,.16);padding:72px 0 32px;margin-top:0;}
.sy-footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;}
.sy-footer h3{font-size:15px;color:var(--txt);margin-bottom:16px;letter-spacing:0;}
.sy-footer-brand p{font-size:14px;color:var(--txt-dim);line-height:1.8;margin-top:16px;max-width:340px;}
.sy-footer-links{display:flex;flex-direction:column;gap:10px;}
.sy-footer-links a{font-size:14px;color:var(--txt-dim);transition:color .18s ease-out;}
.sy-footer-links a:hover{color:var(--star-500);}
.sy-subscribe{display:flex;gap:10px;margin-top:14px;flex-wrap:wrap;}
.sy-subscribe input{
  flex:1;min-width:150px;height:42px;padding:0 12px;
  background:rgba(242,240,255,.05);border:1px solid var(--line);border-radius:var(--r-sm);
  color:var(--txt);outline:none;transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.sy-subscribe input::placeholder{color:#7E7CA0;}
.sy-subscribe input:focus{border-color:var(--star-500);box-shadow:0 0 0 2px rgba(233,180,76,.24);}
.sy-form-tip{font-size:13px;color:var(--txt-dim);margin-top:10px;}
.sy-footer-bottom{
  margin-top:48px;padding-top:24px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.sy-footer-bottom p{font-size:13px;color:#7E7CA0;}

/* 回到顶部 */
.sy-top{
  position:fixed;right:24px;bottom:24px;z-index:60;
  width:44px;height:44px;border-radius:50%;
  background:rgba(233,180,76,.94);color:#1A1730;border:0;cursor:pointer;
  display:inline-flex;align-items:center;justify-content:center;
  opacity:0;pointer-events:none;transform:translateY(8px);
  transition:opacity .2s ease-out,transform .2s ease-out;
}
.sy-top.is-visible{opacity:1;pointer-events:auto;transform:translateY(0);}
.sy-top svg{width:18px;height:18px;stroke:currentColor;}

/* 响应式 */
@media (max-width:1024px){
  .sy-nav-links{display:none;}
  .sy-search{display:none;}
  .sy-burger{display:inline-flex;}
  .sy-grid-4{grid-template-columns:repeat(2,minmax(0,1fr));}
  .sy-footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .sy-steps{grid-template-columns:repeat(2,minmax(0,1fr));}
  .sy-step:nth-child(2){border-right:0;}
  .sy-step:nth-child(1),.sy-step:nth-child(2){border-bottom:1px solid var(--line);}
}
@media (max-width:768px){
  .sy-container{padding:0 20px;}
  .sy-section{padding:56px 0;}
  .sy-header-inner{height:56px;gap:12px;}
  .sy-logo-text{font-size:15px;}
  .sy-page-hero h1{font-size:30px;}
  .sy-hero-inner{padding:64px 20px 52px;}
  .sy-hero-sub{font-size:16px;}
  .sy-grid,.sy-grid-2,.sy-panel-grid,.sy-rel-grid{grid-template-columns:minmax(0,1fr);}
  .sy-grid{gap:24px;}
  .sy-section-head{margin-bottom:32px;}
  .sy-stats{gap:24px 32px;}
  .sy-line-item{grid-template-columns:56px minmax(0,1fr);gap:16px;}
  .sy-line-item .sy-line-tag{grid-column:2;justify-self:start;}
  .sy-steps{grid-template-columns:minmax(0,1fr);}
  .sy-step{border-right:0;border-bottom:1px solid var(--line);}
  .sy-step:last-child{border-bottom:0;}
  .sy-cta-inner{flex-direction:column;align-items:flex-start;padding:48px 0;gap:24px;}
  .sy-cta-actions{flex-wrap:wrap;}
  .sy-footer{padding:56px 0 28px;}
  .sy-faq-body{padding-left:24px;}
}
@media (max-width:520px){
  .sy-page-hero h1{font-size:26px;}
  .sy-stats{gap:20px 24px;}
  .sy-stat-num{font-size:20px;}
  .sy-cover-body{padding:22px 20px 24px;}
  .sy-footer-grid{grid-template-columns:minmax(0,1fr);gap:28px;}
  .sy-footer-grid>div{padding-bottom:24px;border-bottom:1px solid var(--line);}
  .sy-footer-grid>div:last-child{border-bottom:0;padding-bottom:0;}
  .sy-btn{width:100%;}
  .sy-hero-actions .sy-btn{width:100%;}
  .sy-cta-actions{width:100%;}
  .sy-cta-actions .sy-btn{width:auto;flex:1;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;}
  html{scroll-behavior:auto;}
}

/* roulang page: article */
:root{
  --ink-900:#0A0A1A;
  --ink-800:#12122A;
  --ink-700:#1B1B3A;
  --star-500:#E9B44C;
  --star-600:#D19A2E;
  --aurora-500:#3ED0BE;
  --nebula-500:#7A5CFF;
  --sand-50:#F6F3EC;
  --sand-100:#EDE8DC;
  --txt-dark:#F2F0FF;
  --txt-dark-dim:#A8A6C8;
  --txt-light:#1A1730;
  --txt-light-dim:#5B5876;
  --line-dark:rgba(242,240,255,.10);
  --line-light:rgba(26,23,48,.10);
  --ok:#4FB477;
  --warn:#E2704A;
  --r-lg:16px;
  --r-md:12px;
  --r-sm:10px;
  --sh-dark:0 24px 60px -20px rgba(122,92,255,.35);
  --sh-light:0 10px 30px -12px rgba(20,16,48,.12);
  --sans:system-ui,"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  --mono:ui-monospace,"JetBrains Mono",SFMono-Regular,Menlo,Consolas,monospace;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--ink-900);color:var(--txt-dark);
  font-family:var(--sans);font-size:16px;line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
svg{max-width:100%}
a{color:inherit;text-decoration:none;transition:color .18s ease-out}
button,input{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,h5,p,figure{margin:0}
:focus-visible{outline:2px solid var(--star-500);outline-offset:3px;border-radius:6px}
.sy-container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px}
.sy-mono{font-family:var(--mono)}
.sy-sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* ---------- header ---------- */
.sy-header{
  position:sticky;top:0;z-index:60;
  background:rgba(10,10,26,.88);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  border-bottom:1px solid rgba(233,180,76,.16);
  transition:box-shadow .2s ease-out;
}
.sy-header.is-scrolled{box-shadow:0 14px 40px -20px rgba(0,0,0,.9)}
.sy-header-inner{display:flex;align-items:center;gap:20px;min-height:68px}
.sy-logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.sy-logo-mark{
  width:32px;height:32px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:50%;border:1px solid rgba(233,180,76,.35);
  background:radial-gradient(circle at 32% 30%, rgba(233,180,76,.24), rgba(10,10,26,0) 72%);
}
.sy-logo-mark svg{width:18px;height:18px}
.sy-logo-text{font-size:17px;font-weight:700;letter-spacing:-.01em;white-space:nowrap}
.sy-logo-text em{font-style:normal;color:var(--star-500)}
.sy-nav-links{display:flex;align-items:center;gap:4px;margin-left:6px}
.sy-nav-link{
  position:relative;padding:9px 12px;font-size:14px;color:var(--txt-dark-dim);
  border-radius:8px;white-space:nowrap;transition:color .18s ease-out,background .18s ease-out;
}
.sy-nav-link:hover{color:var(--txt-dark);background:rgba(242,240,255,.06)}
.sy-nav-link.is-active{color:var(--star-500)}
.sy-nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:3px;height:2px;
  border-radius:2px;background:var(--star-500);
}
.sy-header-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.sy-search{
  display:flex;align-items:center;gap:8px;height:40px;width:262px;
  padding:0 10px 0 12px;border-radius:var(--r-sm);
  background:rgba(242,240,255,.05);border:1px solid var(--line-dark);
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.sy-search:focus-within{border-color:var(--star-500);box-shadow:0 0 0 2px rgba(233,180,76,.28)}
.sy-search svg{width:16px;height:16px;stroke:var(--txt-dark-dim);fill:none;flex:0 0 auto}
.sy-search input{
  flex:1;min-width:0;border:0;background:transparent;font-size:14px;outline:none;
}
.sy-search input::placeholder{color:#6F6D8F}
.sy-search kbd{
  font-family:var(--mono);font-size:11px;color:var(--txt-dark-dim);
  border:1px solid var(--line-dark);border-radius:6px;padding:2px 6px;background:rgba(10,10,26,.6);
}
.sy-icon-btn{
  width:40px;height:40px;flex:0 0 auto;border-radius:50%;
  border:1px solid var(--line-dark);background:transparent;
  display:inline-flex;align-items:center;justify-content:center;cursor:pointer;
  transition:border-color .18s ease-out,background .18s ease-out,transform .18s ease-out;
}
.sy-icon-btn svg{width:17px;height:17px;stroke:var(--txt-dark-dim);fill:none}
.sy-icon-btn:hover{border-color:var(--star-500);background:rgba(233,180,76,.08);transform:translateY(-1px)}
.sy-icon-btn:hover svg{stroke:var(--star-500)}
.sy-icon-btn.is-on{border-color:var(--star-500);background:rgba(233,180,76,.14)}
.sy-icon-btn.is-on svg{stroke:var(--star-500);fill:var(--star-500)}
.sy-burger{display:none;width:42px;height:42px;border-radius:var(--r-sm);border:1px solid var(--line-dark);background:transparent;cursor:pointer;align-items:center;justify-content:center}
.sy-burger span{display:block;width:18px;height:2px;background:var(--txt-dark);border-radius:2px;position:relative}
.sy-burger span::before,.sy-burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--txt-dark);border-radius:2px}
.sy-burger span::before{top:-6px}
.sy-burger span::after{top:6px}

/* ---------- buttons ---------- */
.sy-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-sm);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:transform .18s ease-out,box-shadow .18s ease-out,background .18s ease-out,color .18s ease-out,border-color .18s ease-out;
}
.sy-btn-sm{height:38px;padding:0 16px;font-size:14px}
.sy-btn-primary{background:var(--star-500);color:#161227;box-shadow:0 12px 28px -16px rgba(233,180,76,.95)}
.sy-btn-primary:hover{background:var(--star-600);transform:translateY(-1px);box-shadow:0 16px 32px -16px rgba(233,180,76,.95)}
.sy-btn-ghost{border-color:rgba(62,208,190,.5);color:var(--aurora-500);background:rgba(62,208,190,.06)}
.sy-btn-ghost:hover{border-color:var(--aurora-500);background:rgba(62,208,190,.14);transform:translateY(-1px)}
.sy-btn-outline{border-color:var(--line-dark);color:var(--txt-dark);background:transparent}
.sy-btn-outline:hover{border-color:var(--star-500);color:var(--star-500);transform:translateY(-1px)}
.sy-btn-dark{background:var(--ink-800);color:var(--sand-50);border-color:rgba(26,23,48,.25)}
.sy-btn-dark:hover{background:var(--ink-700);transform:translateY(-1px)}

/* ---------- drawer ---------- */
.sy-drawer{
  position:fixed;inset:0;z-index:90;background:var(--ink-900);
  transform:translateX(100%);transition:transform .24s ease-out;
  display:flex;flex-direction:column;padding:22px 20px 32px;overflow-y:auto;
  visibility:hidden;
}
.sy-drawer.is-open{transform:translateX(0);visibility:visible}
.sy-drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.sy-drawer-nav a{
  display:block;padding:14px 4px;font-size:16px;color:var(--txt-dark);
  border-bottom:1px solid var(--line-dark);
}
.sy-drawer-nav a.is-active{color:var(--star-500)}
.sy-drawer-search{
  display:flex;align-items:center;gap:10px;height:46px;margin:22px 0;padding:0 14px;
  border-radius:var(--r-sm);background:rgba(242,240,255,.05);border:1px solid var(--line-dark);
}
.sy-drawer-search svg{width:17px;height:17px;stroke:var(--txt-dark-dim);fill:none}
.sy-drawer-search input{flex:1;min-width:0;border:0;background:transparent;outline:none;font-size:15px}
.sy-drawer-foot{margin-top:auto;padding-top:24px}

/* ---------- breadcrumb ---------- */
.sy-crumb-bar{padding:22px 0 0;background:var(--ink-900)}
.sy-crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--txt-dark-dim)}
.sy-crumb a:hover{color:var(--star-500)}
.sy-crumb .sy-sep{color:#5B5876;font-family:var(--mono)}
.sy-crumb .is-current{
  color:var(--txt-dark);max-width:62%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}

/* ---------- read area ---------- */
.sy-read{background:var(--sand-50);color:var(--txt-light);margin-top:22px;padding:48px 0 64px}
.sy-read-grid{align-items:flex-start}
.sy-read-main{padding-bottom:8px}
.sy-article-head{border-bottom:1px solid var(--line-light);padding-bottom:24px;margin-bottom:30px}
.sy-article-head h1{
  font-size:38px;line-height:1.25;font-weight:700;letter-spacing:-.01em;color:var(--txt-light);
  margin-top:16px;word-break:break-word;
}
.sy-article-lead{
  margin-top:16px;font-size:17px;line-height:1.8;color:#3E3960;max-width:760px;
}
.sy-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 16px;margin-top:20px;font-size:13px;color:var(--txt-light-dim)}
.sy-meta .sy-meta-item{display:inline-flex;align-items:center;gap:6px}
.sy-meta time{font-family:var(--mono);color:var(--star-600)}
.sy-meta svg{width:15px;height:15px;stroke:var(--txt-light-dim);fill:none}

.sy-badge{
  display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.02em;
  background:rgba(62,208,190,.16);color:#1B8A7D;border:1px solid rgba(62,208,190,.35);
}
.sy-badge-star{background:rgba(233,180,76,.18);color:#8A6413;border-color:rgba(233,180,76,.42)}
.sy-badge-dark{background:rgba(62,208,190,.12);color:var(--aurora-500);border-color:rgba(62,208,190,.3)}

.sy-figure{
  margin:0 0 32px;border-radius:var(--r-lg);overflow:hidden;background:#fff;
  border:1px solid var(--line-light);box-shadow:var(--sh-light);
}
.sy-figure img{width:100%;aspect-ratio:21/9;object-fit:cover}
.sy-figure figcaption{padding:11px 18px;font-size:13px;color:var(--txt-light-dim);background:#fff}

.sy-body{font-size:17px;line-height:1.85;color:#241F3D;word-break:break-word}
.sy-body h2{
  font-size:26px;line-height:1.3;font-weight:700;letter-spacing:-.01em;color:var(--txt-light);
  margin:40px 0 16px;padding-left:14px;border-left:3px solid var(--star-500);
}
.sy-body h3{font-size:20px;line-height:1.4;font-weight:600;color:var(--txt-light);margin:28px 0 12px}
.sy-body h4{font-size:17px;font-weight:600;color:var(--txt-light);margin:22px 0 10px}
.sy-body p{margin:0 0 1.2em}
.sy-body ul,.sy-body ol{margin:0 0 1.4em;list-style:none}
.sy-body li{position:relative;padding-left:22px;margin-bottom:10px;line-height:1.7}
.sy-body li::before{content:"✦";position:absolute;left:0;top:1px;font-size:13px;color:var(--star-600)}
.sy-body ol{counter-reset:sycount}
.sy-body ol li{counter-increment:sycount}
.sy-body ol li::before{content:counter(sycount,decimal-leading-zero);font-family:var(--mono);font-size:12px;top:3px;color:var(--star-600)}
.sy-body blockquote{
  margin:24px 0;padding:16px 20px;background:var(--sand-100);
  border-left:3px solid var(--star-500);border-radius:0 var(--r-md) var(--r-md) 0;color:#3A3556;
}
.sy-body blockquote p:last-child{margin-bottom:0}
.sy-body img{border-radius:var(--r-md);margin:24px 0;box-shadow:var(--sh-light)}
.sy-body code{font-family:var(--mono);font-size:14px;background:var(--sand-100);padding:2px 6px;border-radius:6px}
.sy-body pre{
  font-family:var(--mono);font-size:14px;line-height:1.7;background:var(--sand-100);
  padding:18px;border-radius:var(--r-md);overflow-x:auto;margin:22px 0;
}
.sy-body table{width:100%;border-collapse:collapse;font-size:15px;margin:22px 0;display:block;overflow-x:auto}
.sy-body th,.sy-body td{border:1px solid var(--line-light);padding:10px 14px;text-align:left;white-space:nowrap}
.sy-body th{background:var(--sand-100);font-weight:600}
.sy-body tbody tr:nth-child(odd){background:rgba(237,232,220,.6)}
.sy-body a{color:#8A6413;border-bottom:1px solid rgba(209,154,46,.5)}
.sy-body a:hover{color:var(--star-600);border-bottom-color:var(--star-500)}

.sy-empty{
  border:1px dashed rgba(209,154,46,.6);border-radius:var(--r-lg);background:#fff;
  padding:44px 24px;text-align:center;
}
.sy-empty-mark{font-size:30px;color:var(--star-500);line-height:1}
.sy-empty p{margin:14px 0 20px;color:var(--txt-light-dim);font-size:16px}

/* ---------- aside / toc ---------- */
.sy-aside{position:sticky;top:92px}
.sy-toc{
  background:#fff;border:1px solid var(--line-light);border-radius:var(--r-lg);
  padding:22px;box-shadow:var(--sh-light);
}
.sy-toc h2{
  font-size:14px;font-weight:700;color:var(--txt-light);letter-spacing:.04em;
  display:flex;align-items:center;gap:8px;margin-bottom:14px;
}
.sy-toc h2 svg{width:15px;height:15px;stroke:var(--star-500);fill:none}
.sy-toc-nav a{
  display:block;font-size:14px;line-height:1.6;color:var(--txt-light-dim);
  padding:8px 0 8px 14px;border-left:2px solid transparent;
  transition:color .18s ease-out,border-color .18s ease-out;
}
.sy-toc-nav a:hover{color:var(--star-600);border-left-color:var(--star-500)}
.sy-toc-nav a.is-current{color:var(--txt-light);font-weight:600;border-left-color:var(--star-500)}
.sy-toc-nav a.sy-toc-sub{padding-left:28px;font-size:13px}
.sy-toc-empty{font-size:13px;color:var(--txt-light-dim)}
.sy-toc-meta{
  margin-top:18px;padding-top:16px;border-top:1px solid var(--line-light);
  font-size:12px;color:var(--txt-light-dim);display:flex;justify-content:space-between;gap:10px;
}
.sy-toc-meta span{font-family:var(--mono);color:var(--star-600)}

/* ---------- article foot ---------- */
.sy-article-foot{
  margin-top:42px;padding-top:24px;border-top:1px solid var(--line-light);
  display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between;
}
.sy-tags{display:flex;flex-wrap:wrap;gap:8px}
.sy-tag{
  font-size:13px;padding:5px 13px;border-radius:999px;
  background:rgba(233,180,76,.16);color:#8A6413;border:1px solid rgba(233,180,76,.4);
}
.sy-share{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--txt-light-dim)}
.sy-share .sy-icon-btn{border-color:var(--line-light)}
.sy-share .sy-icon-btn svg{stroke:var(--txt-light-dim)}
.sy-share .sy-icon-btn:hover{border-color:var(--star-500);background:rgba(233,180,76,.1)}
.sy-share .sy-icon-btn:hover svg{stroke:var(--star-600)}
.sy-share .sy-icon-btn.is-on svg{stroke:var(--star-600);fill:var(--star-500)}

/* ---------- pager ---------- */
.sy-pager{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:40px}
.sy-pager-card{
  display:block;background:#fff;border:1px solid var(--line-light);border-radius:var(--r-md);
  padding:18px 20px;transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.sy-pager-card:hover{transform:translateY(-2px);box-shadow:var(--sh-light);border-color:rgba(233,180,76,.5)}
.sy-pager-label{
  display:block;font-family:var(--mono);font-size:12px;letter-spacing:.08em;
  color:var(--star-600);margin-bottom:8px;
}
.sy-pager-title{display:block;font-size:16px;font-weight:600;color:var(--txt-light);line-height:1.55}
.sy-pager-card.is-next{text-align:right}

/* ---------- related ---------- */
.sy-related{background:var(--ink-900);padding:88px 0}
.sy-section-head{max-width:720px;margin-bottom:36px}
.sy-section-head h2{font-size:28px;line-height:1.3;font-weight:700;letter-spacing:-.01em;color:var(--txt-dark)}
.sy-section-head p{margin-top:12px;color:var(--txt-dark-dim);font-size:15px}
.sy-card{
  display:flex;flex-direction:column;height:100%;overflow:hidden;
  background:var(--ink-800);border:1px solid var(--line-dark);border-radius:var(--r-lg);
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.sy-card:hover{transform:translateY(-2px);border-color:rgba(233,180,76,.45);box-shadow:var(--sh-dark)}
.sy-card-media{position:relative;overflow:hidden;aspect-ratio:16/9;background:var(--ink-700)}
.sy-card-media img{width:100%;height:100%;object-fit:cover;transition:transform .22s ease-out}
.sy-card:hover .sy-card-media img{transform:scale(1.04)}
.sy-card-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg, rgba(10,10,26,.05), rgba(10,10,26,.72));
}
.sy-card-media .sy-badge{position:absolute;left:14px;top:14px;z-index:2}
.sy-card-body{padding:20px;display:flex;flex-direction:column;gap:12px;flex:1}
.sy-card-body h3{font-size:19px;line-height:1.45;font-weight:600;color:var(--txt-dark)}
.sy-card-body p{font-size:14px;line-height:1.75;color:var(--txt-dark-dim);flex:1}
.sy-card-foot{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding-top:14px;border-top:1px solid var(--line-dark);font-size:12px;color:var(--txt-dark-dim);
}
.sy-card-foot time{font-family:var(--mono)}
.sy-card-more{color:var(--star-500);font-weight:600}

/* ---------- CTA band ---------- */
.sy-cta{background:var(--sand-50);color:var(--txt-light);padding:64px 0;position:relative;overflow:hidden}
.sy-cta::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg, rgba(233,180,76,0), rgba(233,180,76,.75), rgba(233,180,76,0));
}
.sy-cta-inner{display:flex;flex-wrap:wrap;gap:28px;align-items:center;justify-content:space-between}
.sy-cta-text{max-width:620px}
.sy-cta-text h2{font-size:28px;line-height:1.3;font-weight:700;letter-spacing:-.01em}
.sy-cta-text p{margin-top:12px;font-size:15px;line-height:1.8;color:var(--txt-light-dim)}
.sy-cta-actions{display:flex;flex-wrap:wrap;align-items:center;gap:12px}
.sy-icon-btn-light{border-color:var(--line-light)}
.sy-icon-btn-light svg{stroke:var(--txt-light-dim)}
.sy-icon-btn-light:hover{border-color:var(--star-500);background:rgba(233,180,76,.12)}
.sy-icon-btn-light:hover svg{stroke:var(--star-600)}
.sy-icon-btn-light.is-on svg{stroke:var(--star-600);fill:var(--star-500)}

/* ---------- footer ---------- */
.sy-footer{
  background:var(--ink-900);border-top:1px solid rgba(233,180,76,.16);
  padding:64px 0 28px;
}
.sy-footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px}
.sy-footer h3{font-size:14px;letter-spacing:.05em;color:var(--txt-dark);margin-bottom:16px}
.sy-footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;color:var(--txt-dark-dim);max-width:340px}
.sy-footer-links{display:flex;flex-direction:column;gap:10px}
.sy-footer-links a{font-size:14px;color:var(--txt-dark-dim)}
.sy-footer-links a:hover{color:var(--star-500)}
.sy-subscribe{display:flex;gap:10px;margin-top:14px}
.sy-subscribe input{
  flex:1;min-width:0;height:44px;padding:0 14px;border-radius:var(--r-sm);
  background:rgba(242,240,255,.05);border:1px solid var(--line-dark);
  font-size:14px;color:var(--txt-dark);outline:none;
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.sy-subscribe input::placeholder{color:#6F6D8F}
.sy-subscribe input:focus{border-color:var(--star-500);box-shadow:0 0 0 2px rgba(233,180,76,.26)}
.sy-subscribe .sy-btn{height:44px;padding:0 18px;font-size:14px}
.sy-form-tip{margin-top:10px;font-size:13px;color:var(--txt-dark-dim)}
.sy-form-tip.is-ok{color:var(--ok)}
.sy-form-tip.is-err{color:var(--warn)}
.sy-footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid var(--line-dark);
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  font-size:13px;color:var(--txt-dark-dim);
}

/* ---------- to top ---------- */
.sy-totop{
  position:fixed;right:24px;bottom:24px;z-index:50;
  width:46px;height:46px;border-radius:50%;border:1px solid rgba(233,180,76,.4);
  background:rgba(18,18,42,.9);cursor:pointer;display:inline-flex;align-items:center;justify-content:center;
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .2s ease-out,transform .2s ease-out,visibility .2s;
}
.sy-totop.is-on{opacity:1;visibility:visible;transform:translateY(0)}
.sy-totop:hover{background:var(--ink-700)}
.sy-totop svg{width:18px;height:18px;stroke:var(--star-500);fill:none}

/* ---------- responsive ---------- */
@media (max-width:1100px){
  .sy-search{width:200px}
  .sy-nav-link{padding:9px 9px;font-size:13.5px}
}
@media (max-width:1024px){
  .sy-nav-links,.sy-search{display:none}
  .sy-burger{display:inline-flex}
  .sy-aside{position:static;margin-top:32px}
  .sy-read-grid>.sy-aside{width:100%}
  .sy-related{padding:72px 0}
  .sy-footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  .sy-container{padding:0 20px}
  .sy-article-head h1{font-size:29px}
  .sy-body{font-size:16px}
  .sy-body h2{font-size:22px;margin-top:32px}
  .sy-body h3{font-size:18px}
  .sy-figure img{aspect-ratio:16/9}
  .sy-pager{grid-template-columns:1fr}
  .sy-pager-card.is-next{text-align:left}
  .sy-cta-inner{flex-direction:column;align-items:flex-start}
  .sy-cta-text h2{font-size:23px}
  .sy-section-head h2{font-size:23px}
  .sy-related{padding:56px 0}
  .sy-read{padding:36px 0 48px}
  .sy-footer{padding:48px 0 24px}
  .sy-totop{right:16px;bottom:16px}
}
@media (max-width:520px){
  .sy-header-inner{min-height:56px;gap:12px}
  .sy-logo-text{font-size:15px}
  .sy-header-actions .sy-icon-btn{display:none}
  .sy-article-head h1{font-size:25px}
  .sy-footer-grid{grid-template-columns:1fr}
  .sy-subscribe{flex-direction:column}
  .sy-subscribe .sy-btn{width:100%}
  .sy-crumb{font-size:12px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}

/* roulang page: category2 */
:root{
  --ink-900:#0A0A1A;
  --ink-800:#12122A;
  --ink-700:#1B1B3A;
  --star-500:#E9B44C;
  --star-600:#D19A2E;
  --aurora-500:#3ED0BE;
  --nebula-500:#7A5CFF;
  --sand-50:#F6F3EC;
  --sand-100:#EDE8DC;
  --txt-light:#F2F0FF;
  --txt-dark-dim:#A8A6C8;
  --txt-ink:#1A1730;
  --txt-ink-dim:#5B5876;
  --line-dark:rgba(242,240,255,.10);
  --line-light:rgba(26,23,48,.10);
  --line-star:rgba(233,180,76,.40);
  --ok:#4FB477;
  --warn:#E2704A;
  --r-lg:16px;
  --r-md:12px;
  --r-sm:10px;
  --shadow-dark:0 24px 60px -20px rgba(122,92,255,.35);
  --shadow-light:0 10px 30px -12px rgba(20,16,48,.12);
  --sans:system-ui,"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  --mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Menlo,Consolas,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:16px;
  line-height:1.85;
  color:var(--txt-light);
  background:var(--ink-900);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .18s ease-out,border-color .18s ease-out,background-color .18s ease-out;}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{
  outline:2px solid var(--star-500);
  outline-offset:2px;
  border-radius:6px;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0;}
ul,ol{list-style:none;}
h1,h2,h3{line-height:1.25;letter-spacing:-.01em;font-weight:700;}
button,input{font-family:inherit;font-size:inherit;}
button{cursor:pointer;border:0;background:none;color:inherit;}
.sy-container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
.sy-mono{font-family:var(--mono);font-variant-numeric:tabular-nums;}
.sy-sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;}

/* ============ 顶部导航 ============ */
.sy-header{
  position:sticky;top:0;z-index:80;
  background:rgba(10,10,26,.88);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(233,180,76,.16);
  transition:box-shadow .2s ease-out;
}
.sy-header.is-scrolled{box-shadow:0 14px 34px -18px rgba(0,0,0,.9);}
.sy-header-inner{
  display:flex;align-items:center;gap:24px;height:68px;
}
.sy-logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.sy-logo-mark{width:26px;height:26px;display:inline-flex;align-items:center;justify-content:center;}
.sy-logo-mark svg{width:26px;height:26px;}
.sy-logo-text{
  font-size:17px;font-weight:700;letter-spacing:.01em;color:var(--txt-light);white-space:nowrap;
}
.sy-logo-text em{font-style:normal;color:var(--star-500);}
.sy-nav-links{display:flex;align-items:center;gap:2px;margin-left:8px;}
.sy-nav-link{
  position:relative;
  display:inline-block;
  padding:8px 12px;
  font-size:14.5px;
  color:var(--txt-dark-dim);
  border-radius:8px;
  white-space:nowrap;
}
.sy-nav-link:hover{color:var(--txt-light);background:rgba(242,240,255,.06);}
.sy-nav-link.is-active{color:var(--star-500);}
.sy-nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;background:var(--star-500);
}
.sy-header-right{margin-left:auto;display:flex;align-items:center;gap:12px;}
.sy-search{
  display:flex;align-items:center;gap:8px;
  width:264px;height:38px;padding:0 10px 0 12px;
  background:var(--ink-800);
  border:1px solid var(--line-dark);
  border-radius:var(--r-sm);
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.sy-search:focus-within{border-color:var(--star-500);box-shadow:0 0 0 2px rgba(233,180,76,.28);}
.sy-search svg{flex:0 0 auto;opacity:.7;}
.sy-search input{
  flex:1 1 auto;min-width:0;background:transparent;border:0;color:var(--txt-light);font-size:14px;
}
.sy-search input::placeholder{color:#6E6C90;}
.sy-kbd{
  font-family:var(--mono);font-size:11px;color:var(--txt-dark-dim);
  border:1px solid var(--line-dark);border-radius:6px;padding:2px 6px;background:rgba(242,240,255,.04);
}
.sy-icon-btn{
  width:36px;height:36px;border-radius:50%;
  border:1px solid var(--line-dark);
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--txt-dark-dim);
  transition:color .18s ease-out,border-color .18s ease-out,transform .18s ease-out;
}
.sy-icon-btn:hover{color:var(--star-500);border-color:var(--line-star);transform:translateY(-1px);}
.sy-icon-btn svg{width:17px;height:17px;}
.sy-menu-btn{display:none;width:38px;height:38px;border:1px solid var(--line-dark);border-radius:10px;align-items:center;justify-content:center;color:var(--txt-light);}
.sy-menu-btn svg{width:18px;height:18px;}

/* 移动抽屉 */
.sy-drawer{
  position:fixed;inset:0;z-index:120;
  background:var(--ink-900);
  padding:20px;
  display:none;
  flex-direction:column;
  transform:translateY(-6px);
  opacity:0;
  transition:opacity .2s ease-out,transform .2s ease-out;
}
.sy-drawer.is-open{display:flex;opacity:1;transform:translateY(0);}
.sy-drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line-dark);}
.sy-drawer nav{display:flex;flex-direction:column;margin-top:8px;}
.sy-drawer nav a{
  display:block;padding:12px 4px;min-height:44px;font-size:16px;color:var(--txt-light);
  border-bottom:1px solid var(--line-dark);
}
.sy-drawer nav a.is-active{color:var(--star-500);}
.sy-drawer-foot{margin-top:auto;padding-top:20px;}

/* ============ 按钮 ============ */
.sy-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 20px;font-size:15px;font-weight:600;border-radius:var(--r-sm);
  border:1px solid transparent;white-space:nowrap;
  transition:transform .18s ease-out,box-shadow .18s ease-out,background-color .18s ease-out,border-color .18s ease-out,color .18s ease-out;
}
.sy-btn-primary{background:var(--star-500);color:#1A1730;box-shadow:0 12px 26px -14px rgba(233,180,76,.85);}
.sy-btn-primary:hover{background:var(--star-600);transform:translateY(-1px);box-shadow:0 16px 30px -14px rgba(233,180,76,.9);}
.sy-btn-ghost{border-color:rgba(62,208,190,.55);color:var(--aurora-500);}
.sy-btn-ghost:hover{background:rgba(62,208,190,.10);border-color:var(--aurora-500);transform:translateY(-1px);}
.sy-btn-quiet{border-color:var(--line-dark);color:var(--txt-light);}
.sy-btn-quiet:hover{border-color:var(--line-star);color:var(--star-500);transform:translateY(-1px);}
.sy-btn-ink{background:var(--ink-800);color:var(--txt-light);border-color:var(--line-light);}
.sy-btn-ink:hover{background:var(--ink-700);transform:translateY(-1px);}
.sy-btn-sm{padding:9px 16px;font-size:14px;}

/* ============ 徽章 / 标签 ============ */
.sy-badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 10px;border-radius:999px;
  font-size:12px;line-height:1.7;font-weight:600;letter-spacing:.02em;
}
.sy-badge-star{color:var(--star-500);background:rgba(233,180,76,.12);}
.sy-badge-aurora{color:var(--aurora-500);background:rgba(62,208,190,.12);}
.sy-badge-plain{color:var(--txt-ink-dim);background:rgba(26,23,48,.06);}
.sy-dot{width:6px;height:6px;border-radius:50%;background:var(--warn);display:inline-block;}

/* ============ 面包屑 ============ */
.sy-breadcrumb{
  border-bottom:1px solid var(--line-dark);
  background:linear-gradient(180deg,rgba(18,18,42,.9),rgba(10,10,26,0));
}
.sy-breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:10px;padding:16px 0;font-size:13.5px;color:var(--txt-dark-dim);}
.sy-breadcrumb li{display:flex;align-items:center;gap:10px;}
.sy-breadcrumb li::after{content:"/";color:rgba(168,166,200,.45);}
.sy-breadcrumb li:last-child::after{display:none;}
.sy-breadcrumb a:hover{color:var(--star-500);}
.sy-breadcrumb [aria-current="page"]{color:var(--txt-light);}

/* ============ 内页首屏 ============ */
.sy-hero{
  position:relative;
  overflow:hidden;
  padding:72px 0 64px;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
}
.sy-hero::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(circle at 82% 18%,rgba(233,180,76,.14),transparent 46%),
    linear-gradient(100deg,rgba(10,10,26,.94) 0%,rgba(10,10,26,.80) 46%,rgba(10,10,26,.58) 100%);
}
.sy-hero-inner{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:40px;align-items:flex-end;}
.sy-hero-main{flex:1 1 560px;min-width:0;}
.sy-tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:20px;}
.sy-hero h1{
  font-size:clamp(28px,4.4vw,46px);
  font-weight:700;letter-spacing:-.015em;line-height:1.22;
  max-width:16em;
}
.sy-hero h1 .sy-h1-thin{display:block;font-size:.62em;font-weight:600;color:var(--star-500);letter-spacing:.02em;margin-bottom:10px;}
.sy-hero-sub{margin-top:18px;font-size:17px;line-height:1.8;color:#D7D4EE;max-width:34em;}
.sy-hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.sy-hero-stats{
  display:flex;flex-wrap:wrap;gap:0;margin-top:34px;border-top:1px solid var(--line-dark);padding-top:18px;
}
.sy-hero-stat{padding-right:26px;margin-right:26px;border-right:1px solid var(--line-dark);}
.sy-hero-stat:last-child{border-right:0;margin-right:0;padding-right:0;}
.sy-hero-stat b{display:block;font-family:var(--mono);font-size:22px;color:var(--star-500);font-weight:600;line-height:1.3;}
.sy-hero-stat span{font-size:13px;color:var(--txt-dark-dim);}
.sy-hero-card{
  flex:0 1 320px;min-width:260px;
  background:rgba(18,18,42,.86);
  border:1px solid var(--line-dark);
  border-radius:var(--r-lg);
  padding:20px;
  box-shadow:var(--shadow-dark);
}
.sy-hero-card h2{font-size:16px;margin-bottom:14px;color:var(--txt-light);}
.sy-hero-card ul{display:flex;flex-direction:column;gap:12px;}
.sy-hero-card li{display:flex;gap:12px;font-size:14px;color:var(--txt-dark-dim);line-height:1.7;}
.sy-hero-card li b{font-family:var(--mono);color:var(--star-500);font-weight:600;flex:0 0 auto;}

/* ============ 主体布局 ============ */
.sy-main{padding:64px 0 0;}
.sy-layout{display:flex;flex-wrap:wrap;gap:40px;align-items:flex-start;}
.sy-aside{flex:0 1 262px;min-width:230px;position:sticky;top:96px;align-self:flex-start;}
.sy-content{flex:1 1 620px;min-width:0;}
.sy-side-card{
  background:var(--ink-800);border:1px solid var(--line-dark);border-radius:var(--r-md);padding:20px;
}
.sy-side-card h2,.sy-side-title{
  font-size:13px;font-family:var(--mono);letter-spacing:.14em;text-transform:uppercase;
  color:var(--txt-dark-dim);font-weight:600;margin-bottom:14px;
}
.sy-anchor-nav{display:flex;flex-direction:column;gap:2px;margin-bottom:22px;}
.sy-anchor-nav a{
  display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:8px;
  font-size:14.5px;color:var(--txt-dark-dim);border-left:2px solid transparent;
}
.sy-anchor-nav a b{font-family:var(--mono);font-size:12px;color:rgba(168,166,200,.6);font-weight:500;}
.sy-anchor-nav a:hover{color:var(--txt-light);background:rgba(242,240,255,.05);}
.sy-anchor-nav a.is-active{color:var(--star-500);border-left-color:var(--star-500);background:rgba(233,180,76,.08);}
.sy-side-note{
  font-size:13px;line-height:1.8;color:var(--txt-dark-dim);
  border-top:1px solid var(--line-dark);padding-top:16px;margin-top:6px;
}
.sy-side-link{
  display:flex;align-items:center;justify-content:space-between;gap:8px;
  font-size:14px;padding:10px 0;border-bottom:1px dashed var(--line-dark);color:var(--txt-dark-dim);
}
.sy-side-link:last-child{border-bottom:0;}
.sy-side-link:hover{color:var(--star-500);}

/* ============ 内容区块 ============ */
.sy-section{padding-bottom:56px;margin-bottom:56px;border-bottom:1px solid var(--line-dark);scroll-margin-top:96px;}
.sy-section:last-of-type{border-bottom:0;}
.sy-sec-head{margin-bottom:26px;}
.sy-sec-head .sy-badge{margin-bottom:14px;}
.sy-sec-head h2{font-size:clamp(22px,2.6vw,28px);}
.sy-sec-head p{margin-top:12px;font-size:15.5px;color:var(--txt-dark-dim);max-width:46em;}

.sy-longlist{display:flex;flex-direction:column;}
.sy-row{
  display:flex;gap:20px;padding:24px 0;border-bottom:1px dashed var(--line-dark);
  transition:background-color .18s ease-out;
}
.sy-row:last-child{border-bottom:0;}
.sy-row:hover{background:rgba(242,240,255,.03);}
.sy-row-num{
  font-family:var(--mono);font-size:15px;color:var(--star-500);font-weight:600;
  flex:0 0 44px;padding-top:2px;
}
.sy-row-body{flex:1 1 auto;min-width:0;}
.sy-row-body h3{font-size:18px;margin-bottom:8px;}
.sy-row-body p{font-size:15px;color:var(--txt-dark-dim);line-height:1.82;}
.sy-row-meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:12px;}
.sy-row-meta time{font-family:var(--mono);font-size:13px;color:rgba(168,166,200,.75);}
.sy-row-meta .sy-sep{color:rgba(168,166,200,.35);font-size:13px;}

.sy-figure{
  margin:8px 0 28px;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--line-dark);position:relative;
}
.sy-figure img{width:100%;aspect-ratio:21/9;object-fit:cover;}
.sy-figure figcaption{
  padding:12px 16px;font-size:13px;color:var(--txt-dark-dim);background:var(--ink-800);
  border-top:1px solid var(--line-dark);
}
.sy-note{
  margin-top:22px;padding:18px 20px;border-left:3px solid var(--star-500);
  background:rgba(233,180,76,.07);border-radius:0 var(--r-md) var(--r-md) 0;
  font-size:14.5px;color:#E3E0F7;line-height:1.8;
}
.sy-note b{color:var(--star-500);}

/* 场景条 */
.sy-scene-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;}
.sy-scene{
  display:flex;gap:16px;padding:20px;border:1px solid var(--line-dark);border-radius:var(--r-md);
  background:var(--ink-800);transition:border-color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out;
}
.sy-scene:hover{border-color:var(--line-star);transform:translateY(-2px);box-shadow:var(--shadow-dark);}
.sy-scene-num{
  font-family:var(--mono);font-size:13px;color:var(--aurora-500);flex:0 0 auto;
  border:1px solid rgba(62,208,190,.35);border-radius:8px;height:28px;min-width:34px;
  display:inline-flex;align-items:center;justify-content:center;padding:0 6px;
}
.sy-scene h3{font-size:16px;margin-bottom:6px;}
.sy-scene p{font-size:14px;color:var(--txt-dark-dim);line-height:1.78;}

/* 步骤条 */
.sy-steps{display:flex;flex-direction:column;gap:14px;margin-top:8px;}
.sy-step{
  display:flex;gap:16px;align-items:flex-start;padding:18px 20px;
  border:1px solid var(--line-dark);border-radius:var(--r-md);background:rgba(18,18,42,.62);
}
.sy-step-num{
  font-family:var(--mono);font-size:12px;letter-spacing:.08em;color:var(--ink-900);
  background:var(--star-500);border-radius:999px;padding:2px 10px;flex:0 0 auto;font-weight:700;
}
.sy-step p{font-size:14.5px;color:var(--txt-dark-dim);line-height:1.78;}
.sy-step strong{color:var(--txt-light);display:block;font-size:15.5px;margin-bottom:4px;}

/* FAQ */
.sy-faq{display:flex;flex-direction:column;gap:12px;}
.sy-faq-item{
  background:var(--ink-800);border:1px solid var(--line-dark);border-radius:var(--r-md);
  overflow:hidden;transition:border-color .18s ease-out;
}
.sy-faq-item[open]{border-color:var(--line-star);}
.sy-faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;font-size:16px;font-weight:600;color:var(--txt-light);
}
.sy-faq-item summary::-webkit-details-marker{display:none;}
.sy-faq-item summary::after{
  content:"";flex:0 0 auto;width:9px;height:9px;border-right:2px solid var(--star-500);border-bottom:2px solid var(--star-500);
  transform:rotate(45deg);transition:transform .2s ease-out;margin-right:4px;
}
.sy-faq-item[open] summary::after{transform:rotate(-135deg);}
.sy-faq-item p{padding:0 20px 20px;font-size:15px;color:var(--txt-dark-dim);line-height:1.85;border-left:2px solid transparent;}

/* 相关分类 */
.sy-rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;}
.sy-rel-card{
  display:block;padding:20px;border:1px solid var(--line-dark);border-radius:var(--r-md);
  background:var(--ink-800);transition:border-color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out;
}
.sy-rel-card:hover{border-color:var(--line-star);transform:translateY(-2px);box-shadow:var(--shadow-dark);}
.sy-rel-card b{display:block;font-size:16px;color:var(--txt-light);margin-bottom:8px;}
.sy-rel-card span{font-size:14px;color:var(--txt-dark-dim);line-height:1.75;display:block;}
.sy-rel-card em{
  display:inline-flex;align-items:center;gap:6px;margin-top:14px;font-style:normal;
  font-size:13.5px;color:var(--star-500);font-weight:600;
}

/* CTA 带 */
.sy-cta{
  background:var(--sand-50);color:var(--txt-ink);
  border-radius:var(--r-lg);padding:40px;margin:8px 0 56px;
  display:flex;flex-wrap:wrap;gap:24px;align-items:center;justify-content:space-between;
  position:relative;overflow:hidden;box-shadow:var(--shadow-light);
}
.sy-cta::before{
  content:"";position:absolute;left:0;right:0;top:16px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(209,154,46,.55),transparent);
}
.sy-cta-text h2{font-size:22px;color:var(--txt-ink);}
.sy-cta-text p{margin-top:8px;font-size:14.5px;color:var(--txt-ink-dim);max-width:34em;}
.sy-cta-actions{display:flex;flex-wrap:wrap;align-items:center;gap:12px;}
.sy-cta .sy-btn-ink{background:#fff;color:var(--txt-ink);border-color:var(--line-light);}
.sy-cta .sy-btn-ink:hover{background:var(--sand-100);}

/* 分页 */
.sy-pager{display:flex;flex-wrap:wrap;align-items:center;gap:8px;justify-content:center;padding-bottom:72px;}
.sy-pager a,.sy-pager span{
  display:inline-flex;align-items:center;justify-content:center;min-width:40px;height:40px;padding:0 12px;
  border-radius:var(--r-sm);border:1px solid var(--line-dark);color:var(--txt-dark-dim);
  font-family:var(--mono);font-size:14px;transition:all .18s ease-out;
}
.sy-pager a:hover{border-color:var(--line-star);color:var(--star-500);transform:translateY(-1px);}
.sy-pager .is-current{background:var(--star-500);border-color:var(--star-500);color:#1A1730;font-weight:700;}

/* ============ 页脚 ============ */
.sy-footer{
  background:var(--ink-900);border-top:1px solid rgba(233,180,76,.16);padding:56px 0 28px;margin-top:24px;
}
.sy-footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.sy-footer h3{
  font-size:13px;font-family:var(--mono);letter-spacing:.12em;color:var(--txt-dark-dim);
  font-weight:600;margin-bottom:16px;text-transform:uppercase;
}
.sy-footer-brand p{margin-top:16px;font-size:14px;color:var(--txt-dark-dim);line-height:1.85;max-width:30em;}
.sy-footer-links{display:flex;flex-direction:column;gap:10px;}
.sy-footer-links a{font-size:14.5px;color:var(--txt-dark-dim);}
.sy-footer-links a:hover{color:var(--star-500);}
.sy-subscribe{display:flex;gap:10px;margin-top:4px;}
.sy-subscribe input{
  flex:1 1 auto;min-width:0;height:42px;padding:0 12px;border-radius:var(--r-sm);
  background:var(--ink-800);border:1px solid var(--line-dark);color:var(--txt-light);font-size:14px;
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.sy-subscribe input::placeholder{color:#6E6C90;}
.sy-subscribe input:focus{border-color:var(--star-500);box-shadow:0 0 0 2px rgba(233,180,76,.24);outline:none;}
.sy-subscribe .sy-btn{padding:0 16px;height:42px;}
.sy-form-tip{margin-top:10px;font-size:13px;color:var(--txt-dark-dim);}
.sy-form-tip.is-ok{color:var(--ok);}
.sy-form-tip.is-warn{color:var(--warn);}
.sy-footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid var(--line-dark);
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  font-size:13px;color:rgba(168,166,200,.72);
}

/* 回到顶部 */
.sy-top{
  position:fixed;right:24px;bottom:24px;z-index:60;
  width:44px;height:44px;border-radius:50%;background:var(--ink-700);border:1px solid var(--line-star);
  color:var(--star-500);display:none;align-items:center;justify-content:center;
  box-shadow:var(--shadow-dark);transition:transform .18s ease-out;
}
.sy-top.is-show{display:flex;}
.sy-top:hover{transform:translateY(-2px);}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .sy-nav-links{display:none;}
  .sy-search{display:none;}
  .sy-menu-btn{display:inline-flex;}
  .sy-layout{gap:28px;}
  .sy-aside{position:static;flex:1 1 100%;min-width:0;}
  .sy-content{flex:1 1 100%;}
  .sy-anchor-nav{flex-direction:row;flex-wrap:wrap;gap:8px;}
  .sy-anchor-nav a{border-left:0;border:1px solid var(--line-dark);border-radius:999px;padding:7px 14px;font-size:13.5px;}
  .sy-anchor-nav a.is-active{border-color:var(--line-star);}
  .sy-rel-grid{grid-template-columns:1fr 1fr;}
  .sy-footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:767px){
  .sy-container{padding:0 20px;}
  .sy-header-inner{height:56px;}
  .sy-hero{padding:48px 0 44px;}
  .sy-hero-sub{font-size:15.5px;}
  .sy-hero-stat{padding-right:18px;margin-right:18px;}
  .sy-hero-card{flex:1 1 100%;min-width:0;}
  .sy-main{padding-top:40px;}
  .sy-section{padding-bottom:40px;margin-bottom:40px;}
  .sy-row{gap:14px;padding:20px 0;}
  .sy-row-num{flex:0 0 32px;font-size:14px;}
  .sy-scene-grid{grid-template-columns:1fr;}
  .sy-rel-grid{grid-template-columns:1fr;}
  .sy-cta{padding:28px 22px;}
  .sy-cta-actions{width:100%;}
  .sy-cta-actions .sy-btn{flex:1 1 auto;}
  .sy-footer{padding:44px 0 24px;}
  .sy-footer-grid{grid-template-columns:1fr;gap:28px;}
  .sy-footer-grid > div + div{border-top:1px solid var(--line-dark);padding-top:24px;}
  .sy-subscribe{flex-wrap:wrap;}
  .sy-subscribe .sy-btn{width:100%;}
  .sy-top{right:16px;bottom:16px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category3 */
:root{
  --ink-900:#0A0A1A;
  --ink-800:#12122A;
  --ink-700:#1B1B3A;
  --star-500:#E9B44C;
  --star-600:#D19A2E;
  --aurora-500:#3ED0BE;
  --nebula-500:#7A5CFF;
  --sand-50:#F6F3EC;
  --sand-100:#EDE8DC;
  --txt:#F2F0FF;
  --txt-dim:#A8A6C8;
  --txt-dark-dim:#A8A6C8;
  --txt-ink:#1A1730;
  --txt-ink-dim:#5B5876;
  --ok:#4FB477;
  --warn:#E2704A;
  --line:rgba(242,240,255,.10);
  --line-strong:rgba(242,240,255,.16);
  --line-ink:rgba(26,23,48,.10);
  --r-lg:16px;
  --r-md:12px;
  --r-sm:10px;
  --sh-dark:0 24px 60px -20px rgba(122,92,255,.35);
  --sh-dark-soft:0 18px 44px -22px rgba(10,10,26,.9);
  --sh-light:0 10px 30px -12px rgba(20,16,48,.12);
  --sans:system-ui,"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  --mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--txt);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input{font-family:inherit;font-size:inherit}
ul{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:600;letter-spacing:-.01em;line-height:1.25}
p{margin:0}
:focus-visible{outline:2px solid var(--star-500);outline-offset:3px}
.sy-skip{position:absolute;left:-9999px;top:0;background:var(--star-500);color:var(--ink-900);padding:10px 16px;border-radius:0 0 10px 0;z-index:99}
.sy-skip:focus{left:0}

.sy-container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}

/* ============ 导航 ============ */
.sy-header{
  position:sticky;top:0;z-index:80;
  background:rgba(10,10,26,.88);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid rgba(233,180,76,.16);
}
.sy-nav-wrap{display:flex;align-items:center;gap:20px;height:68px}
.sy-logo{display:flex;align-items:center;gap:10px;flex:none}
.sy-logo-mark{display:inline-flex;width:26px;height:26px;align-items:center;justify-content:center;border-radius:8px;background:rgba(233,180,76,.10)}
.sy-logo-mark svg{width:18px;height:18px}
.sy-logo-text{font-size:16px;font-weight:700;color:var(--txt);white-space:nowrap}
.sy-logo-text em{font-style:normal;color:var(--star-500)}
.sy-nav-links{display:flex;align-items:center;gap:2px}
.sy-nav-link{
  position:relative;padding:8px 12px;border-radius:8px;
  font-size:15px;color:var(--txt-dim);transition:color .18s ease-out,background .18s ease-out;white-space:nowrap;
}
.sy-nav-link:hover{color:var(--txt);background:rgba(242,240,255,.06)}
.sy-nav-link.is-active{color:var(--star-500)}
.sy-nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;background:var(--star-500);
}
.sy-nav-right{margin-left:auto;display:flex;align-items:center;gap:10px}
.sy-search{
  display:flex;align-items:center;gap:8px;width:262px;height:40px;padding:0 10px;
  border-radius:var(--r-sm);background:var(--ink-800);border:1px solid var(--line);
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.sy-search:focus-within{border-color:var(--star-500);box-shadow:0 0 0 2px rgba(233,180,76,.35)}
.sy-search i{color:var(--txt-dim);font-size:13px}
.sy-search input{flex:1;min-width:0;background:transparent;border:0;outline:none;color:var(--txt);font-size:14px}
.sy-search input::placeholder{color:#6f6d8e}
.sy-kbd{font-family:var(--mono);font-size:11px;color:var(--txt-dim);border:1px solid var(--line-strong);border-radius:5px;padding:1px 5px;white-space:nowrap}
.sy-icon-btn{
  width:36px;height:36px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line-strong);background:transparent;color:var(--txt-dim);cursor:pointer;
  transition:color .18s ease-out,border-color .18s ease-out,transform .18s ease-out;
}
.sy-icon-btn:hover{color:var(--star-500);border-color:rgba(233,180,76,.5);transform:translateY(-1px)}
.sy-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 20px;border-radius:var(--r-sm);border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1.2;cursor:pointer;
  transition:transform .18s ease-out,box-shadow .18s ease-out,background .18s ease-out,color .18s ease-out,border-color .18s ease-out;
}
.sy-btn i{font-size:13px}
.sy-btn-primary{background:var(--star-500);color:var(--ink-900)}
.sy-btn-primary:hover{background:var(--star-600);transform:translateY(-1px);box-shadow:0 12px 26px -12px rgba(233,180,76,.7)}
.sy-btn-ghost{border-color:rgba(62,208,190,.55);color:var(--aurora-500);background:rgba(62,208,190,.06)}
.sy-btn-ghost:hover{border-color:var(--aurora-500);background:rgba(62,208,190,.14);transform:translateY(-1px)}
.sy-btn-dark{background:var(--ink-900);color:var(--sand-50)}
.sy-btn-dark:hover{background:#000013;transform:translateY(-1px);box-shadow:var(--sh-light)}
.sy-btn-outline-light{border-color:rgba(26,23,48,.22);color:var(--txt-ink);background:transparent}
.sy-btn-outline-light:hover{border-color:var(--txt-ink);transform:translateY(-1px)}
.sy-nav-cta{padding:9px 16px;font-size:14px}
.sy-burger{display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--line-strong);background:transparent;color:var(--txt);cursor:pointer}

/* 抽屉 */
.sy-drawer{
  position:fixed;inset:0 0 0 auto;width:min(86vw,340px);z-index:120;
  background:var(--ink-900);border-left:1px solid rgba(233,180,76,.2);
  transform:translateX(102%);transition:transform .22s ease-out;
  display:flex;flex-direction:column;padding:20px;
}
.sy-drawer.is-open{transform:translateX(0)}
.sy-drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.sy-drawer nav{display:flex;flex-direction:column;border-top:1px solid var(--line)}
.sy-drawer nav a{padding:13px 4px;border-bottom:1px solid var(--line);font-size:15px;color:var(--txt-dim);min-height:44px;display:flex;align-items:center}
.sy-drawer nav a.is-active{color:var(--star-500)}
.sy-drawer-foot{margin-top:auto;padding-top:20px;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:10px}
.sy-drawer-foot .sy-btn{width:100%}
.sy-drawer-mask{position:fixed;inset:0;background:rgba(4,4,14,.6);z-index:110;opacity:0;pointer-events:none;transition:opacity .22s ease-out}
.sy-drawer-mask.is-open{opacity:1;pointer-events:auto}
body.sy-locked{overflow:hidden}

/* ============ 面包屑 ============ */
.sy-crumb{padding:20px 0 4px;font-size:13px;color:var(--txt-dim)}
.sy-crumb a{color:var(--txt-dim)}
.sy-crumb a:hover{color:var(--star-500)}
.sy-crumb span.sep{margin:0 8px;color:#4c4a6d}
.sy-crumb .now{color:var(--txt)}

/* ============ Hero ============ */
.sy-hero{position:relative;overflow:hidden;border-bottom:1px solid rgba(233,180,76,.16)}
.sy-hero-bg{position:absolute;inset:0;background:url(/assets/images/backpic/back-2.webp) center/cover no-repeat}
.sy-hero-mask{
  position:absolute;inset:0;
  background:
    linear-gradient(100deg,rgba(10,10,26,.95) 0%,rgba(10,10,26,.76) 50%,rgba(10,10,26,.42) 100%),
    radial-gradient(600px 340px at 84% 20%,rgba(233,180,76,.16),transparent 70%);
}
.sy-hero-inner{position:relative;z-index:2;padding:84px 0 80px;display:grid;grid-template-columns:1.25fr .85fr;gap:48px;align-items:center}
.sy-tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:20px}
.sy-tag{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;letter-spacing:.02em;
  padding:5px 11px;border-radius:999px;background:rgba(233,180,76,.12);color:var(--star-500);
  border:1px solid rgba(233,180,76,.22);
}
.sy-tag.is-cyan{background:rgba(62,208,190,.12);color:var(--aurora-500);border-color:rgba(62,208,190,.24)}
.sy-hero h1{font-size:clamp(28px,4.4vw,50px);font-weight:700;line-height:1.18;margin-bottom:18px}
.sy-hero h1 b{color:var(--star-500);font-weight:700}
.sy-hero-sub{font-size:18px;color:#dcd9f5;max-width:560px;line-height:1.8}
.sy-hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.sy-hero-stats{display:flex;flex-wrap:wrap;gap:22px;margin-top:36px;padding-top:22px;border-top:1px solid var(--line)}
.sy-hero-stat{position:relative;padding-right:22px}
.sy-hero-stat:not(:last-child)::after{content:"";position:absolute;right:0;top:6px;bottom:6px;width:1px;background:var(--line-strong)}
.sy-hero-stat b{display:block;font-family:var(--mono);font-size:20px;color:var(--star-500);letter-spacing:-.02em}
.sy-hero-stat span{font-size:13px;color:var(--txt-dim)}
.sy-starcard{
  position:relative;background:var(--ink-800);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--sh-dark);
}
.sy-starcard img{width:100%;aspect-ratio:16/11;object-fit:cover;opacity:.92}
.sy-starcard-body{padding:18px 20px 20px;border-top:1px solid var(--line)}
.sy-starcard-body h2{font-size:16px;font-weight:600;margin-bottom:6px}
.sy-starcard-body p{font-size:13px;color:var(--txt-dim);line-height:1.7}
.sy-coord{
  position:absolute;top:12px;left:12px;font-family:var(--mono);font-size:11px;letter-spacing:.06em;
  color:var(--sand-50);background:rgba(10,10,26,.72);border:1px solid var(--line-strong);
  padding:3px 8px;border-radius:6px;
}
.sy-orbit{position:absolute;right:-40px;bottom:-40px;width:180px;height:180px;border:1px solid rgba(233,180,76,.35);border-radius:50%;pointer-events:none}
.sy-orbit::after{content:"";position:absolute;inset:26px;border:1px solid rgba(62,208,190,.28);border-radius:50%}

/* ============ 通用板块 ============ */
.sy-section{padding:96px 0}
.sy-section.is-deep{background:var(--ink-900)}
.sy-section.is-mid{background:var(--ink-800);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sy-section.is-light{background:var(--sand-50);color:var(--txt-ink)}
.sy-sec-head{max-width:720px;margin-bottom:48px}
.sy-kicker{display:inline-flex;align-items:center;gap:8px;font-family:var(--mono);font-size:12px;letter-spacing:.08em;color:var(--star-500);margin-bottom:14px}
.sy-kicker::before{content:"";width:22px;height:1px;background:var(--star-500)}
.sy-sec-head h2{font-size:clamp(22px,3vw,28px);margin-bottom:14px}
.sy-sec-head p{color:var(--txt-dim);font-size:16px;max-width:640px}
.sy-light .sy-sec-head p,.sy-section.is-light .sy-sec-head p{color:var(--txt-ink-dim)}
.sy-section.is-light .sy-kicker{color:var(--star-600)}

/* ============ 功能速览卡 ============ */
.sy-feature-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.sy-feature{
  position:relative;background:var(--ink-800);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:26px 26px 24px;border-left:3px solid rgba(233,180,76,.28);
  transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.sy-feature:hover{transform:translateY(-2px);border-color:rgba(233,180,76,.5);border-left-color:var(--star-500);box-shadow:var(--sh-dark)}
.sy-feature-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}
.sy-num{font-family:var(--mono);font-size:13px;color:var(--star-500);letter-spacing:.08em}
.sy-status{display:inline-flex;align-items:center;gap:6px;font-size:12px;color:var(--txt-dim)}
.sy-dot{width:7px;height:7px;border-radius:50%;background:var(--warn);box-shadow:0 0 0 4px rgba(226,112,74,.14)}
.sy-dot.is-ok{background:var(--ok);box-shadow:0 0 0 4px rgba(79,180,119,.14)}
.sy-feature h3{font-size:19px;margin-bottom:8px}
.sy-feature p{font-size:14.5px;color:var(--txt-dim)}
.sy-feature-meta{margin-top:16px;padding-top:14px;border-top:1px solid var(--line);font-size:13px;color:var(--txt-dim);display:flex;gap:14px;flex-wrap:wrap}
.sy-feature-meta b{color:var(--txt);font-weight:600}

/* ============ 时间轴 ============ */
.sy-timeline{position:relative;max-width:1000px;margin:0 auto}
.sy-timeline::before{
  content:"";position:absolute;top:8px;bottom:8px;left:50%;width:1px;transform:translateX(-50%);
  background:linear-gradient(180deg,rgba(233,180,76,0),rgba(233,180,76,.55) 10%,rgba(233,180,76,.55) 90%,rgba(233,180,76,0));
}
.sy-tl-item{display:grid;grid-template-columns:1fr 76px 1fr;align-items:start;margin-bottom:28px}
.sy-tl-node{display:flex;justify-content:center;padding-top:28px}
.sy-tl-star{
  width:16px;height:16px;background:var(--star-500);
  clip-path:polygon(50% 0%,61% 39%,100% 50%,61% 61%,50% 100%,39% 61%,0% 50%,39% 39%);
  box-shadow:0 0 18px rgba(233,180,76,.6);
}
.sy-tl-card{
  background:var(--ink-700);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:24px 26px;transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.sy-tl-card:hover{transform:translateY(-2px);border-color:rgba(233,180,76,.42);box-shadow:var(--sh-dark-soft)}
.sy-tl-card .sy-num{display:block;margin-bottom:10px}
.sy-tl-card h3{font-size:19px;margin-bottom:10px}
.sy-tl-card p{font-size:14.5px;color:var(--txt-dim)}
.sy-tl-card .sy-tl-meta{margin-top:14px;font-size:13px;color:var(--txt-dim);font-family:var(--mono);letter-spacing:.02em}
.sy-tl-left{grid-column:1}
.sy-tl-right{grid-column:3}

/* ============ 场景 ============ */
.sy-scene{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.sy-scene-list li{
  position:relative;padding:14px 0 14px 26px;border-bottom:1px solid var(--line-ink);
  font-size:15.5px;color:var(--txt-ink);
}
.sy-scene-list li:last-child{border-bottom:0}
.sy-scene-list li::before{
  content:"";position:absolute;left:0;top:22px;width:10px;height:10px;background:var(--star-600);
  clip-path:polygon(50% 0%,61% 39%,100% 50%,61% 61%,50% 100%,39% 61%,0% 50%,39% 39%);
}
.sy-scene-list b{display:block;font-weight:600;font-size:16px;margin-bottom:2px}
.sy-scene-list span{font-size:14.5px;color:var(--txt-ink-dim)}
.sy-scene-media{position:relative;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-light)}
.sy-scene-media img{width:100%;aspect-ratio:4/3;object-fit:cover}
.sy-scene-media figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:14px 18px;font-size:13px;color:#f4f1e6;
  background:linear-gradient(0deg,rgba(10,10,26,.86),rgba(10,10,26,0));
}

/* ============ 核对清单 ============ */
.sy-check{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.sy-check-item{background:var(--ink-800);border:1px solid var(--line);border-radius:var(--r-md);padding:22px}
.sy-check-item h3{font-size:16px;margin:12px 0 8px}
.sy-check-item p{font-size:14px;color:var(--txt-dim)}
.sy-bar{height:4px;border-radius:999px;background:rgba(242,240,255,.10);overflow:hidden}
.sy-bar i{display:block;height:100%;background:linear-gradient(90deg,var(--star-500),var(--aurora-500));border-radius:999px}
.sy-check-item .sy-bar{margin-top:16px}

/* ============ FAQ ============ */
.sy-faq{max-width:880px;margin:0 auto;background:var(--sand-50);border-radius:var(--r-lg);padding:6px 26px;color:var(--txt-ink)}
.sy-faq-item{border-bottom:1px solid var(--line-ink)}
.sy-faq-item:last-child{border-bottom:0}
.sy-faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 0 20px 14px;background:none;border:0;border-left:3px solid transparent;
  text-align:left;cursor:pointer;font-size:16.5px;font-weight:600;color:var(--txt-ink);line-height:1.7;
  transition:border-color .18s ease-out,color .18s ease-out;
}
.sy-faq-q:hover{color:#000}
.sy-faq-item.is-open .sy-faq-q{border-left-color:var(--star-600)}
.sy-faq-q i{font-size:13px;color:var(--txt-ink-dim);transition:transform .2s ease-out}
.sy-faq-item.is-open .sy-faq-q i{transform:rotate(90deg);color:var(--star-600)}
.sy-faq-a{padding:0 0 20px 17px;font-size:15px;color:var(--txt-ink-dim)}
.sy-faq--js .sy-faq-a{max-height:0;overflow:hidden;padding-bottom:0;transition:max-height .22s ease-out,padding .22s ease-out}
.sy-faq--js .sy-faq-item.is-open .sy-faq-a{max-height:420px;padding-bottom:20px}

/* ============ 相关分类 ============ */
.sy-related{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.sy-related-card{
  display:flex;gap:14px;align-items:center;padding:16px;border-radius:var(--r-md);
  background:var(--ink-800);border:1px solid var(--line);
  transition:transform .2s ease-out,border-color .2s ease-out;
}
.sy-related-card:hover{transform:translateY(-2px);border-color:rgba(233,180,76,.45)}
.sy-related-card img{width:64px;height:64px;border-radius:10px;object-fit:cover;flex:none}
.sy-related-card h3{font-size:15.5px;margin-bottom:4px}
.sy-related-card span{font-size:13px;color:var(--txt-dim)}
.sy-related-card i{margin-left:auto;color:var(--star-500);font-size:13px}

/* ============ CTA 带 ============ */
.sy-cta{position:relative;background:var(--sand-100);color:var(--txt-ink);padding:64px 0;overflow:hidden}
.sy-cta::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,rgba(233,180,76,0),rgba(233,180,76,.85),rgba(233,180,76,0));
}
.sy-cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.sy-cta h2{font-size:clamp(20px,2.6vw,26px);margin-bottom:10px}
.sy-cta p{font-size:15px;color:var(--txt-ink-dim);max-width:520px}
.sy-cta-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.sy-cta .sy-icon-btn{border-color:rgba(26,23,48,.2);color:var(--txt-ink)}
.sy-cta .sy-icon-btn:hover{color:var(--star-600);border-color:var(--star-600)}

/* ============ 页脚 ============ */
.sy-footer{background:var(--ink-900);border-top:1px solid rgba(233,180,76,.16);padding:64px 0 32px}
.sy-footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}
.sy-footer-brand p{margin-top:14px;font-size:14px;color:var(--txt-dim);max-width:320px}
.sy-footer h3{font-size:15px;color:var(--txt);margin-bottom:14px;letter-spacing:.01em}
.sy-footer-links a{display:block;padding:6px 0;font-size:14px;color:var(--txt-dim);transition:color .18s ease-out}
.sy-footer-links a:hover{color:var(--star-500)}
.sy-subscribe{display:flex;gap:8px;margin-top:12px}
.sy-subscribe input{
  flex:1;min-width:0;height:42px;padding:0 12px;border-radius:var(--r-sm);
  background:var(--ink-800);border:1px solid var(--line);color:var(--txt);outline:none;font-size:14px;
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.sy-subscribe input::placeholder{color:#6f6d8e}
.sy-subscribe input:focus{border-color:var(--star-500);box-shadow:0 0 0 2px rgba(233,180,76,.3)}
.sy-subscribe .sy-btn{height:42px;padding:0 18px;font-size:14px}
.sy-form-tip{font-size:12.5px;color:#6f6d8e;margin-top:10px;line-height:1.7}
.sy-form-tip.is-ok{color:var(--ok)}
.sy-form-tip.is-err{color:var(--warn)}
.sy-footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(242,240,255,.08);
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:13px;color:#6f6d8e;
}

/* 返回顶部 */
.sy-top{
  position:fixed;right:22px;bottom:22px;z-index:90;width:44px;height:44px;border-radius:50%;
  background:var(--ink-700);border:1px solid rgba(233,180,76,.35);color:var(--star-500);
  display:flex;align-items:center;justify-content:center;cursor:pointer;
  opacity:0;pointer-events:none;transition:opacity .2s ease-out,transform .2s ease-out;
}
.sy-top.is-show{opacity:1;pointer-events:auto}
.sy-top:hover{transform:translateY(-2px)}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .sy-container{padding:0 24px}
  .sy-nav-links{display:none}
  .sy-search{width:200px}
  .sy-nav-cta{display:none}
  .sy-burger{display:inline-flex;align-items:center;justify-content:center}
  .sy-hero-inner{grid-template-columns:1fr;gap:36px;padding:64px 0 60px}
  .sy-scene{grid-template-columns:1fr;gap:32px}
  .sy-footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .sy-related{grid-template-columns:1fr 1fr}
  .sy-check{grid-template-columns:1fr 1fr}
}
@media (max-width:860px){
  .sy-timeline::before{left:15px;transform:none}
  .sy-tl-item{grid-template-columns:32px 1fr;margin-bottom:20px}
  .sy-tl-node{grid-column:1;justify-content:flex-start;padding-top:26px}
  .sy-tl-left,.sy-tl-right{grid-column:2}
  .sy-feature-grid{grid-template-columns:1fr}
}
@media (max-width:640px){
  body{font-size:15.5px}
  .sy-container{padding:0 20px}
  .sy-section{padding:56px 0}
  .sy-nav-wrap{height:56px}
  .sy-logo-text em{display:none}
  .sy-logo-text{font-size:15px}
  .sy-nav-right .sy-icon-btn{display:none}
  .sy-search{display:none}
  .sy-hero-stats{gap:16px}
  .sy-hero-stat{padding-right:16px}
  .sy-check{grid-template-columns:1fr}
  .sy-related{grid-template-columns:1fr}
  .sy-faq{padding:4px 18px}
  .sy-cta-inner{flex-direction:column;align-items:flex-start}
  .sy-footer-grid{grid-template-columns:1fr;gap:26px}
  .sy-footer-links a{padding:9px 0;border-bottom:1px solid rgba(242,240,255,.06)}
  .sy-footer-bottom{flex-direction:column;gap:6px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none!important;animation:none!important}
}

/* roulang page: category4 */
.sy-accordion .accordion-content{display:block !important;}.sy-drawer[hidden]{display:block !important;}

:root{
  --ink-900:#0A0A1A;
  --ink-800:#12122A;
  --ink-700:#1B1B3A;
  --star-500:#E9B44C;
  --star-600:#D19A2E;
  --aurora-500:#3ED0BE;
  --nebula-500:#7A5CFF;
  --sand-50:#F6F3EC;
  --sand-100:#EDE8DC;
  --txt:#F2F0FF;
  --txt-dim:#A8A6C8;
  --ink-txt:#1A1730;
  --ink-txt-dim:#5B5876;
  --ok:#4FB477;
  --warn:#E2704A;
  --line-dark:rgba(242,240,255,.10);
  --line-light:rgba(26,23,48,.10);
  --line-gold:rgba(233,180,76,.24);
  --r-lg:16px;
  --r-md:12px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-dark:0 24px 60px -20px rgba(122,92,255,.35);
  --sh-light:0 10px 30px -12px rgba(20,16,48,.12);
  --maxw:1200px;
  --font-base:system-ui,"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  --font-mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Menlo,Consolas,monospace;
  --dur:.18s;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--txt);
  font-family:var(--font-base);
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;cursor:pointer;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
input,button{font-size:inherit;}
:focus-visible{outline:2px solid var(--star-500);outline-offset:2px;}

/* ---------- 容器 ---------- */
.sy-container{
  width:100%;
  max-width:var(--maxw);
  margin:0 auto;
  padding-left:32px;
  padding-right:32px;
}
.sy-grid-fit{margin-left:-14px;margin-right:-14px;}
.sy-grid-fit>.cell{padding-left:14px;padding-right:14px;}

/* ---------- 通用元素 ---------- */
.sy-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  white-space:nowrap;
  transition:transform var(--dur) ease-out,box-shadow var(--dur) ease-out,background-color var(--dur) ease-out,border-color var(--dur) ease-out,color var(--dur) ease-out;
}
.sy-btn-primary{background:var(--star-500);color:#161227;box-shadow:0 10px 26px -14px rgba(233,180,76,.75);}
.sy-btn-primary:hover,.sy-btn-primary:focus{background:var(--star-600);transform:translateY(-1px);}
.sy-btn-ghost{background:transparent;color:var(--aurora-500);border-color:rgba(62,208,190,.5);}
.sy-btn-ghost:hover,.sy-btn-ghost:focus{background:rgba(62,208,190,.10);border-color:var(--aurora-500);transform:translateY(-1px);}
.sy-btn-light{background:var(--ink-txt);color:var(--sand-50);}
.sy-btn-light:hover,.sy-btn-light:focus{background:#2a2450;transform:translateY(-1px);box-shadow:var(--sh-light);}
.sy-btn-outline-dark{background:transparent;color:var(--ink-txt);border-color:var(--line-light);}
.sy-btn-outline-dark:hover,.sy-btn-outline-dark:focus{border-color:var(--star-500);color:var(--star-600);}
.sy-btn-block{width:100%;}
.sy-icon-btn{
  width:38px;height:38px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:var(--r-pill);
  border:1px solid var(--line-dark);
  background:rgba(242,240,255,.04);
  color:var(--txt-dim);
  transition:border-color var(--dur) ease-out,color var(--dur) ease-out,transform var(--dur) ease-out,background-color var(--dur) ease-out;
}
.sy-icon-btn:hover,.sy-icon-btn:focus{border-color:var(--star-500);color:var(--star-500);transform:translateY(-1px);}
.sy-icon-btn svg{width:16px;height:16px;}

.sy-badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 10px;
  border-radius:var(--r-pill);
  font-size:12px;
  line-height:1.7;
  letter-spacing:.02em;
  background:rgba(62,208,190,.12);
  color:var(--aurora-500);
  border:1px solid rgba(62,208,190,.22);
}
.sy-badge-gold{background:rgba(233,180,76,.12);color:var(--star-500);border-color:rgba(233,180,76,.26);}
.sy-dot{
  width:6px;height:6px;border-radius:50%;
  background:var(--aurora-500);
  display:inline-block;
  box-shadow:0 0 0 4px rgba(62,208,190,.14);
}
.sy-dot-warn{background:var(--warn);box-shadow:0 0 0 4px rgba(226,112,74,.14);}

.sy-mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:-.01em;}

/* ---------- 导航 ---------- */
.sy-header{
  position:sticky;top:0;z-index:60;
  background:rgba(10,10,26,.88);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid rgba(233,180,76,.16);
}
.sy-nav-inner{
  height:68px;
  display:flex;align-items:center;gap:24px;
}
.sy-logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.sy-logo-mark{
  width:32px;height:32px;border-radius:9px;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(150deg,rgba(233,180,76,.20),rgba(122,92,255,.18));
  border:1px solid rgba(233,180,76,.30);
}
.sy-logo-mark svg{width:20px;height:20px;}
.sy-logo-text{
  font-size:16px;font-weight:700;letter-spacing:-.01em;color:var(--txt);
  white-space:nowrap;
}
.sy-logo-text em{font-style:normal;color:var(--star-500);}
.sy-nav-links{display:flex;align-items:center;gap:4px;margin-left:8px;}
.sy-nav-link{
  position:relative;
  padding:8px 12px;
  font-size:15px;
  color:var(--txt-dim);
  border-radius:8px;
  transition:color var(--dur) ease-out,background-color var(--dur) ease-out;
  white-space:nowrap;
}
.sy-nav-link:hover,.sy-nav-link:focus{color:var(--txt);background:rgba(242,240,255,.05);}
.sy-nav-link.is-active{color:var(--star-500);}
.sy-nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:0;height:2px;
  background:var(--star-500);border-radius:2px;
}
.sy-nav-tools{display:flex;align-items:center;gap:12px;margin-left:auto;}
.sy-search{
  display:flex;align-items:center;gap:8px;
  width:250px;height:38px;
  padding:0 10px;
  border-radius:var(--r-btn);
  background:rgba(242,240,255,.05);
  border:1px solid var(--line-dark);
  transition:border-color var(--dur) ease-out,box-shadow var(--dur) ease-out;
}
.sy-search:focus-within{border-color:var(--star-500);box-shadow:0 0 0 2px rgba(233,180,76,.35);}
.sy-search svg{width:15px;height:15px;color:var(--txt-dim);flex:0 0 auto;}
.sy-search input{
  flex:1 1 auto;min-width:0;
  background:transparent;border:0;outline:none;
  color:var(--txt);font-size:14px;
}
.sy-search input::placeholder{color:rgba(168,166,200,.75);}
.sy-kbd{
  font-family:var(--font-mono);font-size:11px;color:var(--txt-dim);
  padding:2px 6px;border-radius:6px;
  background:rgba(242,240,255,.07);
  border:1px solid var(--line-dark);
}
.sy-nav-cta{padding:10px 18px;font-size:14px;}
.sy-nav-toggle{
  display:none;
  width:40px;height:40px;border-radius:10px;
  background:rgba(242,240,255,.05);
  border:1px solid var(--line-dark);
  color:var(--txt);
  align-items:center;justify-content:center;
}
.sy-nav-toggle svg{width:18px;height:18px;}

/* 抽屉 */
.sy-drawer{
  position:fixed;inset:0;z-index:90;
  background:rgba(10,10,26,.98);
  padding:20px;
  overflow-y:auto;
}
.sy-drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;}
.sy-drawer-close{
  width:40px;height:40px;border-radius:10px;
  background:rgba(242,240,255,.06);
  border:1px solid var(--line-dark);
  color:var(--txt);font-size:22px;line-height:1;
}
.sy-drawer-links{display:flex;flex-direction:column;border-top:1px solid var(--line-dark);}
.sy-drawer-links a{
  height:52px;display:flex;align-items:center;
  border-bottom:1px solid var(--line-dark);
  color:var(--txt);font-size:16px;
}
.sy-drawer-links a.is-active{color:var(--star-500);}
.sy-drawer-foot{margin-top:24px;}

/* ---------- Hero ---------- */
.sy-hero{
  position:relative;
  padding:56px 0 40px;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line-dark);
  overflow:hidden;
}
.sy-hero-mask{
  position:absolute;inset:0;
  background:
    radial-gradient(680px 380px at 82% 12%,rgba(233,180,76,.16),transparent 62%),
    linear-gradient(100deg,rgba(10,10,26,.96) 0%,rgba(10,10,26,.86) 46%,rgba(10,10,26,.62) 100%);
}
.sy-hero-inner{position:relative;z-index:2;}
.sy-breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--txt-dim);margin-bottom:20px;
}
.sy-breadcrumb a:hover,.sy-breadcrumb a:focus{color:var(--star-500);}
.sy-breadcrumb .sep{color:rgba(168,166,200,.5);}
.sy-breadcrumb .current{color:var(--txt);}
.sy-hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 12px;border-radius:var(--r-pill);
  background:rgba(233,180,76,.10);
  border:1px solid rgba(233,180,76,.28);
  color:var(--star-500);
  font-size:12px;letter-spacing:.06em;
  margin-bottom:18px;
}
.sy-hero-title{
  font-size:44px;
  line-height:1.22;
  font-weight:700;
  letter-spacing:-.01em;
  color:#fff;
}
.sy-hero-title span{
  display:block;
  margin-top:10px;
  font-size:19px;
  font-weight:600;
  color:var(--star-500);
  letter-spacing:.01em;
  line-height:1.6;
}
.sy-hero-lead{
  margin-top:18px;
  max-width:560px;
  font-size:17px;
  line-height:1.85;
  color:#D9D6F2;
}
.sy-hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.sy-hero-card{
  border-radius:var(--r-lg);
  border:1px solid var(--line-dark);
  background:var(--ink-800);
  box-shadow:var(--sh-dark);
  overflow:hidden;
}
.sy-hero-card-media{position:relative;aspect-ratio:16/10;overflow:hidden;}
.sy-hero-card-media img{width:100%;height:100%;object-fit:cover;opacity:.92;}
.sy-hero-card-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(10,10,26,.14),rgba(10,10,26,.72));
}
.sy-hero-card-tag{
  position:absolute;top:12px;left:12px;z-index:2;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;
  color:var(--star-500);
  padding:4px 9px;border-radius:var(--r-pill);
  background:rgba(10,10,26,.7);
  border:1px solid rgba(233,180,76,.32);
}
.sy-hero-card-body{padding:18px 20px 20px;}
.sy-hero-card-body h2{font-size:17px;font-weight:600;color:var(--txt);}
.sy-hero-card-body p{margin-top:8px;font-size:14px;line-height:1.8;color:var(--txt-dim);}
.sy-hero-stats{
  display:flex;flex-wrap:wrap;gap:0;
  margin-top:36px;
  border-top:1px solid var(--line-dark);
  padding-top:22px;
}
.sy-stat{
  padding:0 26px;
  border-left:1px solid var(--line-dark);
}
.sy-stat:first-child{padding-left:0;border-left:0;}
.sy-stat-num{font-family:var(--font-mono);font-size:22px;color:var(--star-500);line-height:1.3;}
.sy-stat-num small{font-size:12px;color:var(--txt-dim);margin-left:4px;}
.sy-stat-label{font-size:13px;color:var(--txt-dim);margin-top:2px;}

/* ---------- 板块 ---------- */
.sy-section{padding:96px 0;}
.sy-section-tight{padding:72px 0;}
.sy-section-dark{background:var(--ink-800);border-top:1px solid var(--line-dark);border-bottom:1px solid var(--line-dark);}
.sy-section-sand{background:var(--sand-50);color:var(--ink-txt);}
.sy-section-sand .sy-section-lead{color:var(--ink-txt-dim);}
.sy-section-head{max-width:720px;margin-bottom:44px;}
.sy-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;
  color:var(--star-500);text-transform:uppercase;
  margin-bottom:14px;
}
.sy-eyebrow::before{content:"";width:22px;height:1px;background:var(--star-500);display:inline-block;}
.sy-h2{font-size:30px;line-height:1.3;font-weight:700;letter-spacing:-.01em;color:inherit;}
.sy-section-sand .sy-h2{color:var(--ink-txt);}
.sy-section-lead{margin-top:14px;font-size:16px;line-height:1.85;color:var(--txt-dim);}

/* ---------- 筛选条 + 速览墙 ---------- */
.sy-filterbar{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  padding:14px;
  border-radius:var(--r-md);
  background:rgba(242,240,255,.04);
  border:1px solid var(--line-dark);
  margin-bottom:28px;
}
.sy-filter-label{font-size:13px;color:var(--txt-dim);margin-right:4px;}
.sy-filter-btn{
  padding:8px 16px;
  border-radius:var(--r-pill);
  border:1px solid var(--line-dark);
  background:transparent;
  color:var(--txt-dim);
  font-size:14px;
  transition:all var(--dur) ease-out;
}
.sy-filter-btn:hover,.sy-filter-btn:focus{border-color:rgba(233,180,76,.5);color:var(--star-500);}
.sy-filter-btn.is-active{
  background:var(--star-500);
  border-color:var(--star-500);
  color:#161227;
  font-weight:600;
}
.sy-wall{margin-bottom:8px;}
.sy-wall-item{
  height:100%;
  padding:20px;
  border-radius:var(--r-md);
  background:var(--ink-800);
  border:1px solid var(--line-dark);
  transition:transform var(--dur) ease-out,border-color var(--dur) ease-out,box-shadow var(--dur) ease-out;
}
.sy-wall-item:hover,.sy-wall-item:focus-within{
  transform:translateY(-2px);
  border-color:rgba(233,180,76,.42);
  box-shadow:var(--sh-dark);
}
.sy-wall-item[hidden]{display:none;}
.sy-wall-top{display:flex;align-items:center;gap:12px;margin-bottom:14px;}
.sy-wall-thumb{
  width:64px;height:64px;flex:0 0 auto;
  border-radius:10px;overflow:hidden;
  border:1px solid var(--line-dark);
}
.sy-wall-thumb img{width:100%;height:100%;object-fit:cover;}
.sy-wall-index{
  font-family:var(--font-mono);font-size:13px;color:var(--star-500);
  letter-spacing:.06em;
}
.sy-wall-title{font-size:17px;font-weight:600;line-height:1.5;color:var(--txt);}
.sy-wall-desc{margin-top:10px;font-size:14px;line-height:1.8;color:var(--txt-dim);}
.sy-wall-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}

/* ---------- 三层防护面板 ---------- */
.sy-panel{
  border-radius:var(--r-lg);
  padding:26px 24px;
  background:var(--ink-700);
  border:1px solid var(--line-dark);
  height:100%;
  transition:transform var(--dur) ease-out,border-color var(--dur) ease-out;
}
.sy-panel:hover{transform:translateY(-2px);border-color:rgba(62,208,190,.38);}
.sy-panel-head{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.sy-panel-index{
  font-family:var(--font-mono);font-size:12px;color:var(--aurora-500);
  padding:3px 9px;border-radius:var(--r-pill);
  background:rgba(62,208,190,.10);
  border:1px solid rgba(62,208,190,.26);
}
.sy-panel h3{font-size:19px;font-weight:600;color:var(--txt);}
.sy-panel p{font-size:14px;line-height:1.85;color:var(--txt-dim);}
.sy-panel-list{margin-top:16px;border-top:1px solid var(--line-dark);padding-top:14px;}
.sy-panel-list li{
  position:relative;padding-left:18px;
  font-size:14px;line-height:1.9;color:var(--txt-dim);
}
.sy-panel-list li::before{
  content:"";position:absolute;left:0;top:.72em;
  width:6px;height:6px;border-radius:50%;
  background:var(--star-500);
}

/* ---------- 适用场景 ---------- */
.sy-scene-media{
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--line-light);
  box-shadow:var(--sh-light);
  aspect-ratio:4/3;
}
.sy-scene-media img{width:100%;height:100%;object-fit:cover;display:block;}
.sy-scene-list{display:flex;flex-direction:column;}
.sy-scene-item{
  display:flex;gap:16px;
  padding:20px 0;
  border-bottom:1px solid var(--line-light);
}
.sy-scene-item:first-child{padding-top:0;}
.sy-scene-num{
  font-family:var(--font-mono);font-size:13px;
  color:var(--star-600);flex:0 0 auto;padding-top:3px;
}
.sy-scene-item h3{font-size:17px;font-weight:600;color:var(--ink-txt);line-height:1.6;}
.sy-scene-item p{margin-top:6px;font-size:14px;line-height:1.85;color:var(--ink-txt-dim);}

/* ---------- 轨道流程 ---------- */
.sy-track{position:relative;margin-top:16px;padding-top:34px;}
.sy-track-line{
  position:absolute;top:8px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(233,180,76,.6),rgba(233,180,76,.12));
}
.sy-track-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.sy-track-node{position:relative;padding-top:18px;}
.sy-track-node::before{
  content:"";position:absolute;top:-30px;left:0;
  width:9px;height:9px;border-radius:50%;
  background:var(--star-500);
  box-shadow:0 0 0 5px rgba(233,180,76,.14);
}
.sy-track-num{
  font-family:var(--font-mono);font-size:13px;letter-spacing:.1em;
  color:var(--star-500);display:block;margin-bottom:8px;
}
.sy-track-node h3{font-size:17px;font-weight:600;color:var(--txt);}
.sy-track-node p{margin-top:8px;font-size:14px;line-height:1.85;color:var(--txt-dim);}

/* ---------- FAQ ---------- */
.sy-accordion{
  background:transparent;
  border:0;
  border-radius:var(--r-md);
  overflow:hidden;
}
.sy-accordion .accordion-item{
  background:var(--sand-100);
  border:1px solid var(--line-light);
  border-bottom:0;
}
.sy-accordion .accordion-item:first-child{border-radius:var(--r-md) var(--r-md) 0 0;}
.sy-accordion .accordion-item:last-child{border-bottom:1px solid var(--line-light);border-radius:0 0 var(--r-md) var(--r-md);}
.sy-accordion .accordion-title{
  position:relative;
  padding:20px 56px 20px 22px;
  font-size:16px;
  font-weight:600;
  line-height:1.7;
  color:var(--ink-txt);
  background:transparent;
  border:0;
  border-left:3px solid transparent;
  transition:border-color var(--dur) ease-out,background-color var(--dur) ease-out,color var(--dur) ease-out;
}
.sy-accordion .accordion-title::before{
  content:"";position:absolute;right:24px;top:50%;
  width:10px;height:10px;margin-top:-5px;
  border-right:2px solid var(--ink-txt-dim);
  border-bottom:2px solid var(--ink-txt-dim);
  transform:rotate(45deg);
  transition:transform var(--dur) ease-out,border-color var(--dur) ease-out;
}
.sy-accordion .accordion-title:hover{background:#fff;color:var(--star-600);}
.sy-accordion .accordion-item.is-active .accordion-title{
  border-left-color:var(--star-500);
  color:var(--star-600);
  background:#fff;
}
.sy-accordion .accordion-item.is-active .accordion-title::before{
  transform:rotate(-135deg);
  border-color:var(--star-600);
  margin-top:-1px;
}
.sy-accordion .accordion-content{
  padding:0 56px 22px 22px;
  background:#fff;
  border:0;
  border-left:3px solid var(--star-500);
  color:var(--ink-txt-dim);
  font-size:15px;
  line-height:1.85;
}
.sy-accordion .accordion-content p{color:var(--ink-txt-dim);}

/* ---------- 交叉链接 ---------- */
.sy-crosslinks{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.sy-crosslink{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:20px 22px;
  border-radius:var(--r-md);
  background:var(--ink-800);
  border:1px solid var(--line-dark);
  transition:transform var(--dur) ease-out,border-color var(--dur) ease-out,box-shadow var(--dur) ease-out;
}
.sy-crosslink:hover,.sy-crosslink:focus{
  transform:translateY(-2px);
  border-color:rgba(233,180,76,.45);
  box-shadow:var(--sh-dark);
}
.sy-crosslink strong{font-size:16px;font-weight:600;color:var(--txt);display:block;}
.sy-crosslink span{display:block;margin-top:4px;font-size:13px;color:var(--txt-dim);}
.sy-crosslink svg{width:16px;height:16px;color:var(--star-500);flex:0 0 auto;transition:transform var(--dur) ease-out;}
.sy-crosslink:hover svg{transform:translateX(4px);}

/* ---------- CTA 带 ---------- */
.sy-cta{
  background:var(--sand-50);
  color:var(--ink-txt);
  border-top:1px solid var(--line-light);
  border-bottom:1px solid var(--line-light);
  padding:64px 0;
  position:relative;
  overflow:hidden;
}
.sy-cta::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(233,180,76,.8),transparent);
}
.sy-cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.sy-cta h2{font-size:26px;font-weight:700;color:var(--ink-txt);line-height:1.4;}
.sy-cta p{margin-top:10px;font-size:15px;color:var(--ink-txt-dim);max-width:520px;}
.sy-cta-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap;}
.sy-cta .sy-icon-btn{border-color:var(--line-light);color:var(--ink-txt-dim);background:#fff;}
.sy-cta .sy-icon-btn:hover,.sy-cta .sy-icon-btn:focus{border-color:var(--star-600);color:var(--star-600);}

/* ---------- 分页 ---------- */
.sy-pagination{
  display:flex;align-items:center;justify-content:center;gap:8px;
  flex-wrap:wrap;
  margin-top:44px;
}
.sy-page-link{
  min-width:42px;height:42px;
  display:inline-flex;align-items:center;justify-content:center;
  padding:0 14px;
  border-radius:var(--r-btn);
  border:1px solid var(--line-dark);
  color:var(--txt-dim);
  font-family:var(--font-mono);
  font-size:14px;
  transition:all var(--dur) ease-out;
}
.sy-page-link:hover,.sy-page-link:focus{border-color:var(--star-500);color:var(--star-500);}
.sy-page-link.is-current{
  background:var(--star-500);
  border-color:var(--star-500);
  color:#161227;
  font-weight:700;
}

/* ---------- 页脚 ---------- */
.sy-footer{
  background:var(--ink-900);
  border-top:1px solid rgba(233,180,76,.16);
  padding:64px 0 28px;
}
.sy-footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.3fr;
  gap:40px;
}
.sy-footer h3{
  font-size:15px;font-weight:600;color:var(--txt);
  margin-bottom:16px;letter-spacing:.01em;
}
.sy-footer-brand p{
  margin-top:16px;font-size:14px;line-height:1.85;color:var(--txt-dim);max-width:320px;
}
.sy-footer-links{display:flex;flex-direction:column;gap:10px;}
.sy-footer-links a{font-size:14px;color:var(--txt-dim);transition:color var(--dur) ease-out;}
.sy-footer-links a:hover,.sy-footer-links a:focus{color:var(--star-500);}
.sy-subscribe{display:flex;gap:8px;margin-top:14px;flex-wrap:wrap;}
.sy-subscribe input{
  flex:1 1 150px;min-width:0;
  height:42px;padding:0 14px;
  border-radius:var(--r-btn);
  background:rgba(242,240,255,.05);
  border:1px solid var(--line-dark);
  color:var(--txt);
  font-size:14px;
  outline:none;
  transition:border-color var(--dur) ease-out,box-shadow var(--dur) ease-out;
}
.sy-subscribe input::placeholder{color:rgba(168,166,200,.7);}
.sy-subscribe input:focus{border-color:var(--star-500);box-shadow:0 0 0 2px rgba(233,180,76,.3);}
.sy-subscribe .sy-btn{padding:0 18px;height:42px;font-size:14px;}
.sy-form-tip{margin-top:10px;font-size:13px;color:var(--txt-dim);}
.sy-form-tip.is-ok{color:var(--ok);}
.sy-form-tip.is-warn{color:var(--warn);}
.sy-footer-bottom{
  margin-top:48px;padding-top:22px;
  border-top:1px solid var(--line-dark);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.sy-footer-bottom p{font-size:13px;color:var(--txt-dim);}

/* ---------- 返回顶部 ---------- */
.sy-backtop{
  position:fixed;right:20px;bottom:24px;z-index:70;
  width:44px;height:44px;border-radius:var(--r-pill);
  background:var(--star-500);color:#161227;
  border:0;display:inline-flex;align-items:center;justify-content:center;
  box-shadow:0 14px 30px -14px rgba(233,180,76,.8);
  opacity:0;visibility:hidden;
  transition:opacity var(--dur) ease-out,visibility var(--dur) ease-out,transform var(--dur) ease-out;
}
.sy-backtop.is-show{opacity:1;visibility:visible;}
.sy-backtop:hover{transform:translateY(-2px);}
.sy-backtop svg{width:18px;height:18px;}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  .sy-container{padding-left:28px;padding-right:28px;}
}
@media (max-width:1024px){
  .sy-nav-links,.sy-search,.sy-nav-cta{display:none;}
  .sy-nav-toggle{display:inline-flex;}
  .sy-hero-title{font-size:34px;}
  .sy-hero-title span{font-size:17px;}
  .sy-section{padding:72px 0;}
  .sy-track-grid{grid-template-columns:repeat(2,1fr);gap:28px;}
  .sy-track-node::before{top:-30px;}
  .sy-footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .sy-crosslinks{grid-template-columns:1fr;}
}
@media (max-width:768px){
  .sy-container{padding-left:20px;padding-right:20px;}
  .sy-hero{padding:40px 0 32px;}
  .sy-hero-title{font-size:29px;}
  .sy-hero-lead{font-size:16px;}
  .sy-hero-stats{margin-top:28px;padding-top:18px;}
  .sy-stat{padding:0 0 0 18px;}
  .sy-stat-num{font-size:19px;}
  .sy-section{padding:56px 0;}
  .sy-section-tight{padding:48px 0;}
  .sy-h2{font-size:24px;}
  .sy-section-head{margin-bottom:32px;}
  .sy-cta{padding:48px 0;}
  .sy-cta h2{font-size:22px;}
  .sy-footer{padding:48px 0 24px;}
  .sy-footer-grid{grid-template-columns:1fr;gap:28px;}
  .sy-footer-bottom{flex-direction:column;}
  .sy-accordion .accordion-title{padding:18px 48px 18px 18px;font-size:15px;}
  .sy-accordion .accordion-content{padding:0 22px 20px 18px;font-size:15px;}
}
@media (max-width:520px){
  .sy-hero-title{font-size:26px;}
  .sy-hero-actions{flex-direction:column;align-items:stretch;}
  .sy-hero-actions .sy-btn{width:100%;}
  .sy-track-grid{grid-template-columns:1fr;gap:24px;}
  .sy-track-line{display:none;}
  .sy-track-node{padding-top:22px;border-top:1px solid var(--line-dark);}
  .sy-track-node::before{top:-5px;left:0;}
  .sy-cta-inner{flex-direction:column;align-items:flex-start;}
  .sy-cta-actions{width:100%;}
  .sy-cta-actions .sy-btn{width:100%;}
  .sy-filterbar{padding:12px;}
  .sy-filter-btn{padding:7px 13px;font-size:13px;}
  .sy-page-link{min-width:38px;height:38px;font-size:13px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
  .sy-btn:hover,.sy-wall-item:hover,.sy-crosslink:hover,.sy-panel:hover{transform:none !important;}
}