/* roulang page: index */
:root{
  --ink-900:#0A0C0F;
  --ink-800:#12161B;
  --ink-700:#1B2128;
  --line:rgba(255,255,255,.08);
  --paper:#F6F7F6;
  --paper-line:rgba(10,12,15,.08);
  --jade-500:#17C9A0;
  --jade-600:#12A986;
  --jade-050:#E7FAF4;
  --amber-500:#F2A93B;
  --violet-500:#7C6CFF;
  --t1:#F5F7F6;
  --t2:#A7B0B5;
  --t3:#6B747A;
  --radius-card:18px;
  --radius-field:12px;
  --shadow-1:0 1px 2px rgba(0,0,0,.4);
  --shadow-2:0 12px 28px rgba(0,0,0,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--t1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 20px;}
@media (min-width:768px){.container{padding:0 32px;}}
.section{padding:56px 0;}
@media (min-width:1024px){.section{padding:104px 0;}}
.section--tight{padding:44px 0;}
@media (min-width:1024px){.section--tight{padding:72px 0;}}

/* ---------- 头部导航 ---------- */
.site-header{position:fixed;top:0;left:0;right:0;z-index:80;transition:background .2s var(--ease),box-shadow .2s var(--ease);}
.top-bar{height:40px;background:rgba(10,12,15,.72);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--line);transition:height .2s var(--ease),opacity .2s var(--ease);overflow:hidden;}
.top-bar__inner{height:40px;display:flex;align-items:center;justify-content:space-between;gap:16px;}
.brand{font-weight:800;letter-spacing:-.01em;color:var(--t1);white-space:nowrap;}
.brand--sm{font-size:14px;}
.brand--lg{font-size:17px;display:inline-flex;align-items:center;gap:10px;}
.brand__dot{width:8px;height:8px;border-radius:50%;background:var(--jade-500);box-shadow:0 0 0 4px rgba(23,201,160,.14);flex:none;}
.top-bar__links{display:flex;align-items:center;gap:22px;font-size:13px;color:var(--t2);}
.top-bar__links a{transition:color .16s var(--ease);}
.top-bar__links a:hover{color:var(--jade-500);}
.btn-contact{border:1px solid var(--line);border-radius:999px;padding:4px 14px;color:var(--t1);font-size:13px;transition:border-color .16s var(--ease),color .16s var(--ease);}
.btn-contact:hover{border-color:var(--jade-500);color:var(--jade-500);}
.channel-bar{background:rgba(10,12,15,.86);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--line);transition:height .2s var(--ease),background .2s var(--ease);}
.channel-bar__inner{height:52px;display:flex;align-items:center;gap:26px;transition:height .2s var(--ease);}
.channels{display:flex;align-items:center;gap:24px;font-size:14px;}
.channel{position:relative;color:var(--t2);padding:14px 0;transition:color .16s var(--ease);white-space:nowrap;}
.channel:hover{color:var(--t1);}
.channel.is-active{color:var(--jade-500);}
.channel.is-active::after{content:"";position:absolute;left:0;right:0;bottom:8px;height:2px;border-radius:2px;background:var(--jade-500);}
.search{margin-left:auto;display:flex;align-items:center;gap:8px;width:220px;height:36px;padding:0 14px;border:1px solid var(--line);border-radius:999px;background:var(--ink-800);transition:width .22s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);}
.search i{color:var(--t3);font-size:13px;}
.search input{flex:1;min-width:0;background:none;border:0;outline:none;font-size:13px;color:var(--t1);}
.search input::placeholder{color:var(--t3);}
.search:focus-within{width:280px;border-color:var(--jade-500);box-shadow:0 0 0 3px rgba(23,201,160,.12);}
.hotwords{display:flex;align-items:center;gap:10px;}
.hot{font-size:12px;color:var(--amber-500);border:1px solid rgba(242,169,59,.28);border-radius:999px;padding:3px 12px;white-space:nowrap;transition:background .16s var(--ease),border-color .16s var(--ease);}
.hot:hover{background:rgba(242,169,59,.12);border-color:rgba(242,169,59,.6);}
.hamburger{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:12px;background:transparent;color:var(--t1);cursor:pointer;align-items:center;justify-content:center;}
.site-header.is-scrolled{background:rgba(10,12,15,.92);box-shadow:0 8px 24px rgba(0,0,0,.35);}
.site-header.is-scrolled .top-bar{height:0;opacity:0;border-bottom-color:transparent;}
.site-header.is-scrolled .channel-bar{background:transparent;border-bottom-color:transparent;}
.site-header.is-scrolled .channel-bar__inner{height:56px;}
@media (max-width:1024px){
  .channels{display:none;}
  .hotwords{display:none;}
  .search{width:180px;}
}
@media (max-width:768px){
  .top-bar__links a:not(.btn-contact){display:none;}
  .channel-bar__inner{height:56px;gap:12px;}
  .search{display:none;}
  .hamburger{display:inline-flex;margin-left:auto;}
}
/* ---------- 抽屉 ---------- */
.drawer{position:fixed;top:0;right:0;bottom:0;width:330px;max-width:88vw;background:var(--ink-800);border-left:1px solid var(--line);z-index:95;transform:translateX(102%);transition:transform .28s var(--ease);padding:20px;overflow-y:auto;}
.drawer.is-open{transform:translateX(0);}
.drawer__head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line);}
.drawer__close{width:40px;height:40px;border-radius:12px;border:1px solid var(--line);background:transparent;color:var(--t1);cursor:pointer;}
.drawer__group{padding:18px 0;border-bottom:1px solid var(--line);}
.drawer__group p{font-size:12px;letter-spacing:.14em;color:var(--t3);margin-bottom:10px;}
.drawer__link{display:block;padding:12px 0;font-size:15px;color:var(--t1);border-bottom:1px dashed var(--line);}
.drawer__link:last-child{border-bottom:0;}
.drawer__link.is-active{color:var(--jade-500);}
.drawer__search{display:flex;align-items:center;gap:8px;height:44px;padding:0 14px;border:1px solid var(--line);border-radius:var(--radius-field);background:var(--ink-700);}
.drawer__search input{flex:1;min-width:0;background:none;border:0;outline:none;font-size:14px;}
.drawer-mask{position:fixed;inset:0;background:rgba(4,6,8,.62);opacity:0;pointer-events:none;transition:opacity .24s var(--ease);z-index:90;}
.drawer-mask.is-open{opacity:1;pointer-events:auto;}

/* ---------- Hero ---------- */
.hero{position:relative;padding-top:140px;min-height:min(78vh,720px);overflow:hidden;background:var(--ink-900);display:flex;align-items:center;}
.hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);background-size:68px 68px;opacity:.55;pointer-events:none;}
.hero::after{content:"";position:absolute;width:680px;height:680px;right:-160px;top:-200px;background:radial-gradient(circle,rgba(23,201,160,.13),transparent 62%);pointer-events:none;}
.hero__grid{position:relative;z-index:2;display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;width:100%;padding-bottom:56px;}
.hero__tag{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--jade-500);border:1px solid rgba(23,201,160,.3);border-radius:999px;padding:6px 16px;margin-bottom:22px;}
.hero h1{font-size:clamp(2.25rem,5vw,3.75rem);font-weight:800;line-height:1.05;letter-spacing:-.02em;}
.hero h1 em{font-style:normal;color:var(--jade-500);}
.hero__sub{margin-top:20px;font-size:17px;color:var(--t2);max-width:560px;line-height:1.85;}
.hero__actions{margin-top:32px;display:flex;flex-wrap:wrap;gap:14px;}
.hero__chips{margin-top:34px;display:flex;flex-wrap:wrap;gap:10px;}
.chip{font-size:13px;color:var(--t2);border:1px solid var(--line);border-radius:999px;padding:8px 16px;transition:color .16s var(--ease),border-color .16s var(--ease),background .16s var(--ease);}
.chip:hover{color:var(--t1);border-color:rgba(23,201,160,.5);background:rgba(23,201,160,.08);}
.hero__media{position:relative;border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--line);aspect-ratio:4/3;background:var(--ink-700);}
.hero__media img{width:100%;height:100%;object-fit:cover;}
.hero__media-tag{position:absolute;left:16px;bottom:16px;display:inline-flex;align-items:center;gap:8px;background:rgba(10,12,15,.78);backdrop-filter:blur(8px);border:1px solid var(--line);border-radius:999px;padding:7px 15px;font-size:13px;color:var(--t1);}
@media (max-width:1024px){
  .hero{padding-top:124px;}
  .hero__grid{grid-template-columns:1fr;gap:32px;}
}

/* ---------- 按钮 ---------- */
.btn-primary{display:inline-flex;align-items:center;gap:10px;background:var(--jade-500);color:#06231C;font-weight:600;border-radius:999px;padding:14px 28px;border:0;cursor:pointer;transition:background .16s var(--ease),transform .16s var(--ease),box-shadow .16s var(--ease);}
.btn-primary i{transition:transform .16s var(--ease);}
.btn-primary:hover{background:var(--jade-600);}
.btn-primary:hover i{transform:translateX(4px);}
.btn-primary:focus-visible{outline:2px solid var(--jade-500);outline-offset:2px;}
.btn-ghost{display:inline-flex;align-items:center;gap:10px;background:transparent;color:var(--t1);border:1px solid var(--line);border-radius:6px;padding:13px 26px;font-weight:500;cursor:pointer;transition:border-color .16s var(--ease),color .16s var(--ease);}
.btn-ghost:hover{border-color:var(--jade-500);color:var(--jade-500);}
.btn-ghost:focus-visible{outline:2px solid var(--jade-500);outline-offset:2px;}
.text-link{display:inline-flex;align-items:center;gap:8px;color:var(--jade-500);font-size:14px;font-weight:500;transition:color .16s var(--ease);}
.text-link i{transition:transform .16s var(--ease);}
.text-link:hover{color:var(--jade-600);}
.text-link:hover i{transform:translateX(4px);}

/* ---------- 通用区块标题 ---------- */
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:40px;}
.sec-head h2{font-size:clamp(1.5rem,2.6vw,2.25rem);font-weight:700;line-height:1.2;}
.sec-head .sec-note{font-size:13px;color:var(--t3);margin-top:10px;}
.eyebrow{font-size:12px;letter-spacing:.2em;color:var(--violet-500);font-weight:600;margin-bottom:12px;}

/* ---------- 能力区（非对称栅格） ---------- */
.cap-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:20px;}
.cap{background:var(--ink-800);border:1px solid var(--line);border-radius:var(--radius-card);padding:28px;display:flex;flex-direction:column;gap:14px;box-shadow:var(--shadow-1);transition:transform .16s var(--ease),border-color .16s var(--ease),box-shadow .16s var(--ease);}
.cap:hover{transform:translateY(-4px);border-color:rgba(23,201,160,.3);box-shadow:var(--shadow-2);}
.cap h3{font-size:1.125rem;font-weight:600;}
.cap p{font-size:14px;color:var(--t2);line-height:1.85;}
.cap__icon{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;background:rgba(23,201,160,.1);color:var(--jade-500);font-size:17px;}
.cap-a{grid-column:1/7;grid-row:1/3;padding:0;overflow:hidden;}
.cap-a .cap__media{aspect-ratio:16/10;background:var(--ink-700);}
.cap-a .cap__media img{width:100%;height:100%;object-fit:cover;}
.cap-a .cap__body{padding:26px 28px 30px;display:flex;flex-direction:column;gap:14px;}
.cap-b{grid-column:7/10;}
.cap-c{grid-column:10/13;}
.cap-d{grid-column:7/13;}
.cap-d{flex-direction:row;align-items:center;gap:22px;}
.cap-d .cap__icon{flex:none;}
@media (max-width:1024px){
  .cap-a,.cap-b,.cap-c,.cap-d{grid-column:1/-1;grid-row:auto;}
  .cap-d{flex-direction:column;align-items:flex-start;}
}

/* ---------- 数据带 ---------- */
.stats{background:var(--ink-800);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.stats__grid{display:grid;grid-template-columns:repeat(4,1fr);}
.stat{padding:36px 24px;border-left:1px solid var(--line);}
.stat:first-child{border-left:0;}
.stat__num{font-size:clamp(1.75rem,3vw,2.5rem);font-weight:800;color:var(--jade-500);line-height:1.1;letter-spacing:-.02em;}
.stat__label{margin-top:10px;font-size:13px;color:var(--t2);}
@media (max-width:768px){
  .stats__grid{grid-template-columns:repeat(2,1fr);}
  .stat{padding:26px 20px;border-left:1px solid var(--line);border-top:1px solid var(--line);}
  .stat:nth-child(1),.stat:nth-child(2){border-top:0;}
  .stat:nth-child(odd){border-left:0;}
}

/* ---------- 横向轨道 ---------- */
.rail{display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:12px;scrollbar-width:thin;}
.rail::-webkit-scrollbar{height:6px;}
.rail::-webkit-scrollbar-thumb{background:var(--ink-700);border-radius:999px;}
.rail__item{flex:0 0 320px;scroll-snap-align:start;background:var(--ink-800);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;transition:transform .16s var(--ease),border-color .16s var(--ease);}
.rail__item:hover{transform:translateY(-4px);border-color:rgba(23,201,160,.3);}
.rail__media{aspect-ratio:16/9;background:var(--ink-700);overflow:hidden;}
.rail__media img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
.rail__item:hover .rail__media img{transform:scale(1.03);}
.rail__body{padding:18px 20px 22px;}
.rail__body h3{font-size:15px;font-weight:600;line-height:1.5;}
.rail__tag{margin-top:12px;display:inline-block;font-size:12px;color:var(--amber-500);border:1px solid rgba(242,169,59,.28);border-radius:999px;padding:3px 12px;}
@media (max-width:520px){.rail__item{flex:0 0 262px;}}

/* ---------- 方案 zigzag ---------- */
.zig{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center;padding:44px 0;border-top:1px solid var(--line);}
.zig:first-of-type{border-top:0;padding-top:0;}
.zig__media{border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--line);aspect-ratio:16/10;background:var(--ink-700);}
.zig__media img{width:100%;height:100%;object-fit:cover;}
.zig h3{font-size:1.35rem;font-weight:700;margin-bottom:14px;}
.zig p{color:var(--t2);font-size:15px;}
.zig ul{margin:20px 0 22px;display:grid;gap:10px;}
.zig li{position:relative;padding-left:22px;font-size:14px;color:var(--t2);}
.zig li::before{content:"";position:absolute;left:0;top:.72em;width:7px;height:7px;border-radius:2px;background:var(--jade-500);}
.zig--reverse .zig__media{order:-1;}
@media (max-width:1024px){
  .zig{grid-template-columns:1fr;gap:26px;}
  .zig--reverse .zig__media{order:0;}
}

/* ---------- 资讯卡片 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.news-card{background:var(--ink-800);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);transition:transform .16s var(--ease),border-color .16s var(--ease),box-shadow .16s var(--ease);}
.news-card:hover{transform:translateY(-4px);border-color:rgba(23,201,160,.3);box-shadow:var(--shadow-2);}
.news-card__link{display:block;height:100%;}
.news-card__media{position:relative;aspect-ratio:16/9;background:var(--ink-700);overflow:hidden;}
.news-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
.news-card:hover .news-card__media img{transform:scale(1.03);}
.badge{position:absolute;left:14px;top:14px;background:var(--jade-050);color:#0A3B31;font-size:12px;font-weight:600;border-radius:999px;padding:4px 13px;}
.news-card__body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:12px;}
.news-card__title{font-size:16px;font-weight:600;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-card__desc{font-size:14px;color:var(--t2);line-height:1.8;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-card__meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--t3);}
.news-card__arrow{color:var(--jade-500);}
@media (max-width:1024px){.news-grid{grid-template-columns:repeat(2,1fr);}}
@media (max-width:640px){.news-grid{grid-template-columns:1fr;}}
.empty-state{grid-column:1/-1;border:1px dashed var(--line);border-radius:var(--radius-card);padding:56px 24px;text-align:center;color:var(--t2);background:var(--ink-800);}
.empty-state i{font-size:26px;color:var(--jade-500);display:block;margin-bottom:14px;}
.empty-state a{color:var(--jade-500);}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:820px;margin:0 auto;}
.faq{border:1px solid var(--line);border-radius:14px;background:var(--ink-800);margin-bottom:14px;overflow:hidden;transition:border-color .16s var(--ease);}
.faq[open]{border-color:rgba(23,201,160,.34);}
.faq summary{position:relative;list-style:none;cursor:pointer;padding:0 56px 0 22px;min-height:56px;display:flex;align-items:center;font-size:16px;font-weight:600;line-height:1.6;}
.faq summary::-webkit-details-marker{display:none;}
.faq summary::after{content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);color:var(--jade-500);font-size:20px;transition:transform .2s var(--ease);}
.faq[open] summary::after{transform:translateY(-50%) rotate(45deg);}
.faq[open] summary::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--jade-500);}
.faq__body{padding:0 22px 20px 22px;color:var(--t2);font-size:15px;line-height:1.85;}

/* ---------- 联系区（浅色） ---------- */
.contact{background:var(--paper);color:#14181C;}
.contact .sec-head h2{color:#14181C;}
.contact .sec-note{color:#4A5459;}
.contact__grid{display:grid;grid-template-columns:7fr 5fr;gap:28px;}
.form-card{background:#FFFFFF;border:1px solid var(--paper-line);border-radius:var(--radius-card);padding:28px;}
.field{margin-bottom:18px;}
.field label{display:block;font-size:13px;color:#4A5459;margin-bottom:8px;}
.field input,.field select,.field textarea{width:100%;background:#fff;border:1px solid rgba(10,12,15,.14);border-radius:var(--radius-field);padding:12px 14px;font-size:15px;color:#14181C;outline:none;transition:border-color .16s var(--ease),box-shadow .16s var(--ease);}
.field textarea{min-height:112px;resize:vertical;}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--jade-500);box-shadow:0 0 0 3px rgba(23,201,160,.14);}
.form-note{font-size:13px;color:#4A5459;margin-top:14px;}
.form-note.is-ok{color:var(--jade-600);}
.info-card{background:var(--ink-900);color:var(--t1);border-radius:var(--radius-card);padding:28px;display:flex;flex-direction:column;gap:22px;}
.info-card h3{font-size:16px;font-weight:600;}
.info-item{display:flex;gap:14px;align-items:flex-start;font-size:14px;color:var(--t2);}
.info-item i{color:var(--jade-500);margin-top:5px;}
.info-card .divider{height:1px;background:var(--line);}
@media (max-width:1024px){.contact__grid{grid-template-columns:1fr;}}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);border-top:1px solid var(--line);padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;padding-bottom:48px;}
.footer-grid h3{font-size:14px;font-weight:600;color:var(--t1);margin-bottom:16px;}
.footer-grid p,.footer-grid li{font-size:14px;color:var(--t2);line-height:1.9;}
.footer-grid ul{display:grid;gap:10px;}
.footer-grid ul a{transition:color .16s var(--ease);}
.footer-grid ul a:hover{color:var(--jade-500);}
.footer-brand{font-size:18px;font-weight:800;color:var(--t1);margin-bottom:14px;display:inline-flex;align-items:center;gap:10px;}
.footer-bottom{border-top:1px solid var(--line);padding:20px 0;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:13px;color:var(--t3);}
@media (max-width:1024px){.footer-grid{grid-template-columns:1fr 1fr;}}
@media (max-width:520px){.footer-grid{grid-template-columns:1fr;}}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(10px);transition:opacity .5s var(--ease),transform .5s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: article */
:root{
  --ink-900:#0A0C0F;
  --ink-800:#12161B;
  --ink-700:#1B2128;
  --line:rgba(255,255,255,.08);
  --paper:#F6F7F6;
  --paper-2:#EDEFEE;
  --paper-line:rgba(10,12,15,.08);
  --jade-500:#17C9A0;
  --jade-600:#12A986;
  --jade-050:#E7FAF4;
  --amber-500:#F2A93B;
  --violet-500:#7C6CFF;
  --t1:#F5F7F6;
  --t2:#A7B0B5;
  --t3:#6B747A;
  --ink-text:#14181C;
  --ink-text-2:#4A5459;
  --radius-card:18px;
  --radius-field:12px;
  --shadow-1:0 1px 2px rgba(0,0,0,.4);
  --shadow-2:0 12px 28px rgba(0,0,0,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  background:var(--ink-900);
  color:var(--t1);
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
em{font-style:normal}
:focus-visible{outline:2px solid var(--jade-500);outline-offset:2px}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.container{padding:0 32px}}

/* ============ 顶部阅读进度 ============ */
.read-progress{
  position:absolute;left:0;bottom:0;height:3px;width:0;
  background:linear-gradient(90deg,var(--jade-600),var(--jade-500));
  transition:width .12s linear;z-index:60;
}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(10,12,15,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:background .2s var(--ease);
}
.site-header.is-scrolled{background:rgba(10,12,15,.92);box-shadow:0 8px 24px rgba(0,0,0,.35)}
.topbar{max-height:64px;overflow:hidden;transition:max-height .25s var(--ease),opacity .2s var(--ease);border-bottom:1px solid var(--line)}
.site-header.is-scrolled .topbar{max-height:0;opacity:0}
.topbar__inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:40px}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:15px;letter-spacing:.01em}
.brand__dot{width:9px;height:9px;border-radius:50%;background:var(--jade-500);box-shadow:0 0 0 4px rgba(23,201,160,.14);flex:none}
.brand__text{white-space:nowrap}
.topbar__right{display:flex;align-items:center;gap:18px}
.top-link{font-size:13px;color:var(--t2);transition:color .16s var(--ease)}
.top-link:hover{color:var(--jade-500)}
.btn-mini{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;font-weight:600;color:#06231C;
  background:var(--jade-500);border-radius:999px;padding:6px 16px;
  transition:background .16s var(--ease),transform .16s var(--ease);
}
.btn-mini:hover{background:var(--jade-600);transform:translateY(-1px)}
.channels-bar__inner{display:flex;align-items:center;gap:22px;min-height:52px;transition:min-height .2s var(--ease)}
.site-header.is-scrolled .channels-bar__inner{min-height:56px}
.channels{display:flex;align-items:center;gap:22px;flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none;flex:1}
.channels::-webkit-scrollbar{display:none}
.channel{
  position:relative;font-size:14.5px;color:var(--t2);white-space:nowrap;padding:14px 0;
  transition:color .16s var(--ease);
}
.channel::after{
  content:"";position:absolute;left:0;right:0;bottom:6px;height:2px;border-radius:2px;
  background:var(--jade-500);transform:scaleX(0);transform-origin:left;
  transition:transform .2s var(--ease);
}
.channel:hover{color:var(--t1)}
.channel:hover::after{transform:scaleX(1)}
.channel.is-active{color:var(--jade-500);font-weight:600}
.channel.is-active::after{transform:scaleX(1)}
.search{position:relative;flex:none}
.search input{
  width:220px;height:36px;border-radius:999px;
  background:var(--ink-700);border:1px solid var(--line);
  padding:0 16px 0 36px;font-size:13px;color:var(--t1);
  transition:width .22s var(--ease),border-color .16s var(--ease),box-shadow .16s var(--ease);
}
.search input::placeholder{color:var(--t3)}
.search input:focus{width:300px;outline:none;border-color:var(--jade-500);box-shadow:0 0 0 2px rgba(23,201,160,.14)}
.search__icon{
  position:absolute;left:13px;top:50%;transform:translateY(-50%);
  width:14px;height:14px;border:1.6px solid var(--t3);border-radius:50%;
}
.search__icon::after{content:"";position:absolute;right:-5px;bottom:-3px;width:6px;height:1.6px;background:var(--t3);transform:rotate(45deg)}
.hot-chips{display:flex;align-items:center;gap:8px;flex:none}
.site-header.is-scrolled .hot-chips{display:none}
.hot-label{font-size:12px;color:var(--t3);letter-spacing:.08em}
.chip-hot{
  font-size:12.5px;color:var(--amber-500);border:1px solid rgba(242,169,59,.28);
  border-radius:999px;padding:4px 12px;transition:background .16s var(--ease),border-color .16s var(--ease);
}
.chip-hot:hover{background:rgba(242,169,59,.12);border-color:rgba(242,169,59,.55)}
.menu-toggle{
  display:none;width:44px;height:44px;align-items:center;justify-content:center;border-radius:12px;
  border:1px solid var(--line);flex:none;
}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--t1);position:relative}
.menu-toggle span::before,.menu-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--t1);
}
.menu-toggle span::before{top:-6px}
.menu-toggle span::after{top:6px}

/* 抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(0,0,0,.6);opacity:0;pointer-events:none;
  transition:opacity .22s var(--ease);z-index:70;
}
.drawer-mask.is-open{opacity:1;pointer-events:auto}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:min(340px,86vw);
  background:var(--ink-800);border-left:1px solid var(--line);
  transform:translateX(100%);transition:transform .26s var(--ease);
  z-index:71;padding:20px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer__head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.drawer__close{width:44px;height:44px;border-radius:12px;border:1px solid var(--line);font-size:20px;color:var(--t2);line-height:1}
.drawer__nav{display:flex;flex-direction:column;gap:2px;margin-bottom:22px}
.drawer__nav a{
  padding:13px 2px;font-size:15px;color:var(--t2);border-bottom:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;
}
.drawer__nav a.is-active{color:var(--jade-500);font-weight:600}
.drawer__search input{
  width:100%;height:44px;border-radius:var(--radius-field);background:var(--ink-700);
  border:1px solid var(--line);padding:0 16px;font-size:14px;margin-bottom:20px;
}
.drawer__search input:focus{outline:none;border-color:var(--jade-500)}
.drawer__chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:24px}
.drawer .btn-primary{width:100%;justify-content:center}

/* ============ 按钮 ============ */
.btn-primary{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--jade-500);color:#06231C;font-weight:600;font-size:15px;
  padding:14px 28px;border-radius:999px;
  transition:background .16s var(--ease),transform .16s var(--ease),box-shadow .16s var(--ease);
}
.btn-primary:hover{background:var(--jade-600);transform:translateY(-2px);box-shadow:0 8px 20px rgba(0,0,0,.3)}
.btn-primary .arrow{transition:transform .16s var(--ease)}
.btn-primary:hover .arrow{transform:translateX(4px)}
.btn-ghost{
  display:inline-flex;align-items:center;gap:8px;
  background:transparent;color:var(--t1);font-weight:600;font-size:15px;
  padding:13px 26px;border:1px solid var(--line);border-radius:4px;
  transition:border-color .16s var(--ease),color .16s var(--ease),transform .16s var(--ease);
}
.btn-ghost:hover{border-color:var(--jade-500);color:var(--jade-500);transform:translateY(-2px)}
.btn-ghost .arrow{transition:transform .16s var(--ease)}
.btn-ghost:hover .arrow{transform:translateX(4px)}

/* ============ 文章头部 ============ */
.hero-article{
  position:relative;padding:52px 0 46px;
  background:
    linear-gradient(180deg,rgba(10,12,15,.78),rgba(10,12,15,.95)),
    url(/assets/images/backpic/back-2.webp) center/cover no-repeat;
  border-bottom:1px solid var(--line);
}
.hero-article::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(560px 280px at 12% 20%,rgba(23,201,160,.10),transparent 70%);
}
.hero-article .container{position:relative;z-index:1}
.breadcrumb{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:13px;color:var(--t3);margin-bottom:20px}
.breadcrumb a{color:var(--t2);transition:color .16s var(--ease)}
.breadcrumb a:hover{color:var(--jade-500)}
.breadcrumb .sep{color:var(--t3)}
.crumb-current{color:var(--t2);max-width:min(520px,70vw);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.channel-tag{
  display:inline-flex;align-items:center;gap:7px;
  font-size:12.5px;font-weight:600;color:var(--jade-500);
  background:rgba(23,201,160,.12);border:1px solid rgba(23,201,160,.28);
  border-radius:999px;padding:5px 14px;margin-bottom:18px;
}
.hero-article h1{
  font-size:clamp(1.75rem,3.4vw,2.75rem);
  font-weight:800;line-height:1.18;letter-spacing:-.02em;
  max-width:900px;color:var(--t1);
}
.meta-row{
  display:flex;align-items:center;gap:22px;flex-wrap:wrap;
  margin-top:22px;padding-top:18px;border-top:1px solid var(--line);
  font-size:13px;color:var(--t2);
  font-variant-numeric:tabular-nums;
}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:var(--t3)}

/* ============ 正文区 ============ */
.article-section{background:var(--paper);color:var(--ink-text);padding:64px 0 80px}
.article-layout{
  display:grid;grid-template-columns:minmax(0,760px);
  gap:48px;justify-content:center;
}
@media(min-width:1024px){
  .article-layout{grid-template-columns:minmax(0,760px) 220px;justify-content:center}
}
.article-body{min-width:0;overflow-wrap:break-word;word-break:break-word}
.article-body>*:first-child{margin-top:0}
.article-body h2{
  font-size:clamp(1.3rem,1.9vw,1.5rem);font-weight:700;line-height:1.3;
  margin:2.5rem 0 1rem;padding-left:14px;border-left:4px solid var(--jade-500);color:var(--ink-text);
}
.article-body h3{
  font-size:1.125rem;font-weight:600;line-height:1.45;
  margin:1.75rem 0 .75rem;color:var(--ink-text);
}
.article-body h4{font-size:1rem;font-weight:600;margin:1.4rem 0 .6rem}
.article-body p{font-size:17px;line-height:1.9;margin:0 0 1.15em;color:var(--ink-text)}
.article-body a{color:#0E9B7C;border-bottom:1px solid rgba(18,169,134,.4);transition:border-color .16s var(--ease)}
.article-body a:hover{border-bottom-color:#0E9B7C}
.article-body strong{font-weight:700}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.5em}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin:.4em 0;line-height:1.85;font-size:17px}
.article-body blockquote{
  margin:1.5rem 0;padding:20px;background:var(--paper-2);
  border-left:3px solid var(--jade-500);border-radius:0 12px 12px 0;
  color:#31403B;font-size:16px;
}
.article-body blockquote p{margin-bottom:.6em;font-size:16px}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:12px;margin:1.6rem auto;height:auto}
.article-body figure{margin:1.6rem 0}
.article-body figcaption{
  text-align:center;font-size:13px;color:var(--ink-text-2);margin-top:10px;line-height:1.6;
}
.article-body table{
  width:100%;border-collapse:collapse;font-size:15px;margin:1.6rem 0;
  display:block;overflow-x:auto;white-space:nowrap;
}
.article-body th{
  background:var(--paper-2);text-align:left;font-weight:600;
  padding:12px 14px;border:1px solid var(--paper-line);color:var(--ink-text);
}
.article-body td{padding:12px 14px;border:1px solid var(--paper-line);color:var(--ink-text-2)}
.article-body hr{border:0;border-top:1px solid var(--paper-line);margin:2rem 0}

/* 目录 */
.toc{display:none}
@media(min-width:1024px){
  .toc{display:block;position:sticky;top:96px;align-self:start;font-size:13.5px}
  .toc h2{
    font-size:12px;letter-spacing:.14em;color:var(--ink-text-2);font-weight:600;
    text-transform:uppercase;margin-bottom:14px;padding-bottom:12px;border-bottom:1px solid var(--paper-line);
  }
  .toc ol{display:flex;flex-direction:column;gap:2px;border-left:1px solid var(--paper-line)}
  .toc a{
    display:block;padding:7px 0 7px 14px;color:var(--ink-text-2);
    border-left:2px solid transparent;margin-left:-1px;line-height:1.55;
    transition:color .16s var(--ease),border-color .16s var(--ease);
  }
  .toc a:hover{color:var(--ink-text)}
  .toc a.is-current{color:var(--jade-600);border-left-color:var(--jade-500);font-weight:600}
}

/* 空态 */
.empty-state{
  max-width:640px;margin:0 auto;text-align:center;padding:56px 28px;
  background:#fff;border:1px solid var(--paper-line);border-radius:var(--radius-card);
}
.empty-state__icon{
  width:56px;height:56px;margin:0 auto 20px;border-radius:16px;
  background:var(--jade-050);border:1px solid rgba(18,169,134,.25);
  display:flex;align-items:center;justify-content:center;color:var(--jade-600);font-size:22px;font-weight:700;
}
.empty-state h2{font-size:1.3rem;font-weight:700;margin-bottom:12px;color:var(--ink-text)}
.empty-state p{color:var(--ink-text-2);margin-bottom:26px;font-size:15.5px}
.empty-state .btn-primary{box-shadow:none}

/* ============ 文末区 ============ */
.article-foot{background:var(--paper);padding:0 0 72px}
.article-foot .container{max-width:1000px}
.tag-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:34px}
.tag-row__label{font-size:13px;color:var(--ink-text-2)}
.tag{
  font-size:13px;color:var(--ink-text-2);background:#fff;
  border:1px solid var(--paper-line);border-radius:999px;padding:6px 15px;
  transition:color .16s var(--ease),border-color .16s var(--ease),background .16s var(--ease);
}
.tag:hover{color:var(--jade-600);border-color:rgba(18,169,134,.4);background:var(--jade-050)}
.pager{display:grid;grid-template-columns:1fr;gap:16px;margin-bottom:34px}
@media(min-width:768px){.pager{grid-template-columns:1fr 1fr}}
.pager__card{
  display:block;padding:20px 22px;background:#fff;border:1px solid var(--paper-line);
  border-radius:var(--radius-card);transition:transform .16s var(--ease),box-shadow .16s var(--ease),border-color .16s var(--ease);
}
.pager__card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(18,169,134,.35)}
.pager__label{display:block;font-size:12px;letter-spacing:.1em;color:var(--ink-text-2);margin-bottom:8px}
.pager__title{display:block;font-size:15.5px;font-weight:600;color:var(--ink-text);line-height:1.6}
.return-row{text-align:center;margin-top:8px}
.return-row .btn-ghost{color:var(--ink-text);border-color:var(--paper-line)}
.return-row .btn-ghost:hover{color:var(--jade-600);border-color:var(--jade-500)}

/* ============ 相关推荐 ============ */
.related{background:var(--ink-900);padding:88px 0 96px;border-top:1px solid var(--line)}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:20px;
  flex-wrap:wrap;margin-bottom:34px;
}
.section-head h2{font-size:clamp(1.5rem,2.6vw,2.1rem);font-weight:700;line-height:1.2;letter-spacing:-.01em}
.section-head p{font-size:13px;color:var(--t3);margin-top:8px}
.head-link{font-size:13.5px;color:var(--jade-500);display:inline-flex;align-items:center;gap:6px}
.head-link .arrow{transition:transform .16s var(--ease)}
.head-link:hover .arrow{transform:translateX(4px)}
.related-grid{display:grid;grid-template-columns:1fr;gap:22px}
@media(min-width:640px){.related-grid{grid-template-columns:1fr 1fr}}
@media(min-width:1024px){.related-grid{grid-template-columns:repeat(3,1fr)}}
.rcard{
  display:flex;flex-direction:column;background:var(--ink-800);
  border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;
  transition:transform .16s var(--ease),border-color .16s var(--ease),box-shadow .16s var(--ease);
}
.rcard:hover{transform:translateY(-4px);border-color:rgba(23,201,160,.3);box-shadow:var(--shadow-2)}
.rcard__media{position:relative;aspect-ratio:16/9;background:var(--ink-700);overflow:hidden}
.rcard__media img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
.rcard:hover .rcard__media img{transform:scale(1.03)}
.rcard__badge{
  position:absolute;left:12px;top:12px;font-size:12px;font-weight:600;
  color:#06231C;background:var(--jade-500);border-radius:999px;padding:4px 11px;
}
.rcard__badge.is-amber{background:var(--amber-500);color:#2A1B02}
.rcard__body{padding:18px 20px 20px}
.rcard__title{
  font-size:16px;font-weight:600;line-height:1.6;color:var(--t1);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rcard__foot{
  display:flex;align-items:center;justify-content:space-between;
  margin-top:16px;padding-top:14px;border-top:1px solid var(--line);
  font-size:12.5px;color:var(--t3);font-variant-numeric:tabular-nums;
}
.rcard__foot .arrow{color:var(--jade-500);transition:transform .16s var(--ease)}
.rcard:hover .rcard__foot .arrow{transform:translateX(4px)}

/* ============ CTA ============ */
.cta-band{background:linear-gradient(180deg,var(--ink-800),var(--ink-900));border-top:1px solid var(--line);padding:80px 0}
.cta-box{
  display:grid;grid-template-columns:1fr;gap:32px;align-items:center;
  border:1px solid var(--line);border-radius:24px;padding:40px 32px;
  background:radial-gradient(620px 260px at 85% 0%,rgba(23,201,160,.12),transparent 70%),var(--ink-800);
}
@media(min-width:1024px){
  .cta-box{grid-template-columns:minmax(0,1fr) auto;padding:48px 52px}
}
.cta-box h2{font-size:clamp(1.4rem,2.4vw,2rem);font-weight:700;line-height:1.25}
.cta-box p{color:var(--t2);font-size:15.5px;margin-top:12px;max-width:620px;line-height:1.85}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}
.cta-actions .btn-ghost{color:var(--t1);border-color:var(--line)}
.cta-actions .btn-ghost:hover{color:var(--jade-500);border-color:var(--jade-500)}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-900);border-top:1px solid var(--line);padding:72px 0 28px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:36px}
@media(min-width:640px){.footer-grid{grid-template-columns:1fr 1fr}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}}
.footer-brand{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:16px;margin-bottom:16px}
.site-footer p{font-size:13.5px;color:var(--t3);line-height:1.85;max-width:360px}
.site-footer h3{font-size:13px;font-weight:600;color:var(--t1);letter-spacing:.06em;margin-bottom:16px}
.site-footer ul{display:flex;flex-direction:column;gap:11px}
.site-footer ul a{font-size:13.5px;color:var(--t2);transition:color .16s var(--ease)}
.site-footer ul a:hover{color:var(--jade-500)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  margin-top:52px;padding-top:22px;border-top:1px solid var(--line);
  font-size:12.5px;color:var(--t3);font-variant-numeric:tabular-nums;
}

/* ============ 进入动效 ============ */
.reveal{opacity:0;transform:translateY(10px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

/* ============ 响应式 ============ */
@media(max-width:1023px){
  .search input{width:180px}
  .search input:focus{width:220px}
  .hot-chips{display:none}
}
@media(max-width:820px){
  .search,.hot-chips,.topbar__right .top-link{display:none}
  .menu-toggle{display:flex}
  .channels{display:none}
  .topbar__inner{height:52px}
  .site-header.is-scrolled .topbar{max-height:64px;opacity:1}
  .brand{font-size:15px}
  .channels-bar__inner{justify-content:space-between;min-height:56px}
  .hero-article{padding:36px 0 34px}
  .article-section{padding:48px 0 56px}
  .article-foot{padding-bottom:56px}
  .related{padding:64px 0 68px}
  .cta-band{padding:60px 0}
  .cta-box{padding:30px 22px}
  .site-footer{padding:56px 0 24px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
}
@media(max-width:520px){
  .hero-article h1{font-size:clamp(1.5rem,6.4vw,2rem)}
  .meta-row{gap:12px;font-size:12.5px}
  .crumb-current{max-width:56vw}
  .article-body p,.article-body li{font-size:16px}
  .btn-primary,.btn-ghost{width:100%;justify-content:center}
  .cta-actions{width:100%}
}

/* roulang page: category1 */
:root{
    --ink-900:#0A0C0F;
    --ink-800:#12161B;
    --ink-700:#1B2128;
    --line:rgba(255,255,255,.08);
    --paper:#F6F7F6;
    --paper-line:rgba(10,12,15,.08);
    --jade-500:#17C9A0;
    --jade-600:#12A986;
    --jade-050:#E7FAF4;
    --amber-500:#F2A93B;
    --violet-500:#7C6CFF;
    --t1:#F5F7F6;
    --t2:#A7B0B5;
    --t3:#6B747A;
    --ink-text:#14181C;
    --ink-text-2:#4A5459;
    --radius-card:18px;
    --radius-input:12px;
    --shadow-1:0 1px 2px rgba(0,0,0,.4);
    --shadow-2:0 12px 28px rgba(0,0,0,.28);
    --ease:cubic-bezier(.22,.61,.36,1);
    --container:1240px;
  }
  *,*::before,*::after{box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{
    margin:0;
    background:var(--ink-900);
    color:var(--t1);
    font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
    font-size:16px;
    line-height:1.85;
    letter-spacing:.01em;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block}
  a{color:inherit;text-decoration:none}
  button,input,select,textarea{font:inherit;color:inherit}
  h1,h2,h3,h4{margin:0;line-height:1.22;letter-spacing:-.01em}
  p{margin:0}
  ul{margin:0;padding:0}
  :focus-visible{outline:2px solid var(--jade-500);outline-offset:2px}
  .container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}
  @media (min-width:768px){ .container{padding:0 32px} }
  .sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

  /* ---------- 导航 ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(10,12,15,.86);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    border-bottom:1px solid var(--line);
    transition:background .2s var(--ease);
  }
  .topbar{height:40px;display:flex;align-items:center;border-bottom:1px solid var(--line);font-size:13px;color:var(--t2)}
  .topbar__inner{display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%}
  .topbar__links{display:flex;gap:20px}
  .topbar__links a{transition:color .16s var(--ease)}
  .topbar__links a:hover{color:var(--jade-500)}
  .brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:16px;color:var(--t1);letter-spacing:.01em}
  .brand__dot{width:10px;height:10px;border-radius:3px;background:linear-gradient(135deg,var(--jade-500),var(--violet-500));box-shadow:0 0 0 3px rgba(23,201,160,.14);flex:none}
  .brand--compact{display:none}
  .channels-bar__inner{display:flex;align-items:center;gap:22px;height:52px}
  .channels{display:flex;align-items:center;gap:4px}
  .channel{position:relative;padding:8px 12px;font-size:14px;color:var(--t2);border-radius:8px;transition:color .16s var(--ease),background .16s var(--ease)}
  .channel:hover{color:var(--t1);background:rgba(255,255,255,.05)}
  .channel.is-active{color:var(--jade-500);font-weight:600}
  .channel.is-active::after{content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;background:var(--jade-500);border-radius:2px}
  .nav-search{position:relative;margin-left:auto}
  .nav-search input{
    width:220px;height:36px;border-radius:999px;background:var(--ink-700);
    border:1px solid var(--line);padding:0 40px 0 16px;font-size:14px;color:var(--t1);
    outline:none;transition:width .24s var(--ease),border-color .16s var(--ease),box-shadow .16s var(--ease);
  }
  .nav-search input::placeholder{color:var(--t3)}
  .nav-search input:focus{width:280px;border-color:var(--jade-500);box-shadow:0 0 0 3px rgba(23,201,160,.14)}
  .nav-search i{position:absolute;right:14px;top:50%;transform:translateY(-50%);color:var(--t3);font-size:13px;pointer-events:none}
  .trend-chips{display:flex;gap:8px}
  .trend-chip{font-size:12px;padding:5px 11px;border-radius:999px;border:1px solid rgba(242,169,59,.32);color:var(--amber-500);white-space:nowrap;transition:border-color .16s var(--ease),background .16s var(--ease)}
  .trend-chip:hover{border-color:rgba(242,169,59,.7);background:rgba(242,169,59,.08)}
  .nav-toggle{
    display:none;align-items:center;gap:8px;height:40px;padding:0 14px;border-radius:10px;
    background:var(--ink-700);border:1px solid var(--line);color:var(--t1);font-size:14px;cursor:pointer;
    transition:border-color .16s var(--ease),color .16s var(--ease);
  }
  .nav-toggle:hover{border-color:var(--jade-500);color:var(--jade-500)}
  .site-header.is-compact{background:rgba(10,12,15,.92)}
  .site-header.is-compact .topbar{display:none}
  .site-header.is-compact .brand--compact{display:inline-flex}
  .site-header.is-compact .channels-bar__inner{height:56px}
  .site-header.is-compact .trend-chips{display:none}

  .drawer-mask{position:fixed;inset:0;background:rgba(0,0,0,.62);opacity:0;visibility:hidden;transition:opacity .25s var(--ease),visibility .25s var(--ease);z-index:70}
  .drawer-mask.is-open{opacity:1;visibility:visible}
  .drawer{
    position:fixed;top:0;right:0;bottom:0;width:min(340px,86vw);z-index:80;
    background:var(--ink-800);border-left:1px solid var(--line);
    transform:translateX(102%);transition:transform .3s var(--ease);
    padding:22px;overflow-y:auto;
  }
  .drawer.is-open{transform:none}
  .drawer__head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:16px;border-bottom:1px solid var(--line)}
  .drawer__close{width:40px;height:40px;display:grid;place-items:center;border-radius:10px;background:var(--ink-700);border:1px solid var(--line);cursor:pointer;color:var(--t1)}
  .drawer__close:hover{border-color:var(--jade-500);color:var(--jade-500)}
  .drawer__group{margin-top:22px}
  .drawer__group h4{font-size:12px;letter-spacing:.14em;color:var(--t3);margin-bottom:10px}
  .drawer__link{display:block;padding:11px 12px;border-radius:10px;font-size:15px;color:var(--t2);transition:background .16s var(--ease),color .16s var(--ease)}
  .drawer__link:hover{background:var(--ink-700);color:var(--t1)}
  .drawer__link.is-active{color:var(--jade-500);background:rgba(23,201,160,.08);font-weight:600}
  .drawer .nav-search{width:100%;margin:0}
  .drawer .nav-search input{width:100%}
  .drawer .nav-search input:focus{width:100%}
  .drawer .trend-chips{flex-wrap:wrap}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    border:0;cursor:pointer;font-size:15px;font-weight:600;line-height:1;
    padding:15px 28px;border-radius:999px;min-height:44px;
    transition:background .16s var(--ease),color .16s var(--ease),border-color .16s var(--ease),transform .16s var(--ease);
  }
  .btn i{transition:transform .16s var(--ease);font-size:13px}
  .btn:hover i{transform:translateX(4px)}
  .btn--primary{background:var(--jade-500);color:#062019}
  .btn--primary:hover{background:var(--jade-600)}
  .btn--ghost{background:transparent;border:1px solid var(--line);color:var(--t1);border-radius:8px}
  .btn--ghost:hover{border-color:var(--jade-500);color:var(--jade-500)}
  .btn--block{width:100%}
  .btn[disabled]{opacity:.6;cursor:not-allowed}

  /* ---------- Hero ---------- */
  .cat-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);padding:52px 0 56px;background:var(--ink-900)}
  .cat-hero__grid{
    position:absolute;inset:0;pointer-events:none;
    background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
    background-size:56px 56px;
    -webkit-mask-image:radial-gradient(circle at 26% 34%,#000,transparent 70%);
    mask-image:radial-gradient(circle at 26% 34%,#000,transparent 70%);
  }
  .cat-hero__bg{
    position:absolute;inset:0;
    background:url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
    opacity:.16;
    -webkit-mask-image:linear-gradient(90deg,transparent,#000 60%);
    mask-image:linear-gradient(90deg,transparent,#000 60%);
    pointer-events:none;
  }
  .cat-hero__glow{
    position:absolute;width:560px;height:560px;right:-140px;top:-200px;pointer-events:none;
    background:radial-gradient(circle,rgba(23,201,160,.12),transparent 65%);
  }
  .cat-hero__inner{position:relative;z-index:2;display:grid;grid-template-columns:1fr;gap:40px;align-items:center}
  .crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--t3);margin-bottom:18px}
  .crumb a:hover{color:var(--jade-500)}
  .crumb span.sep{color:var(--t3);opacity:.7}
  .cat-hero h1{font-size:clamp(1.75rem,3.4vw,2.75rem);font-weight:800;line-height:1.12;letter-spacing:-.02em}
  .cat-hero__lead{margin-top:18px;font-size:17px;color:var(--t2);max-width:38rem}
  .cat-hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
  .cat-hero__figure{position:relative;border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-1)}
  .cat-hero__figure img{width:100%;aspect-ratio:16/11;object-fit:cover;background:var(--ink-700);transition:transform .4s var(--ease)}
  .cat-hero__figure:hover img{transform:scale(1.03)}
  .cat-hero__figure figcaption{position:absolute;left:16px;bottom:16px;padding:8px 14px;border-radius:999px;background:rgba(10,12,15,.72);border:1px solid var(--line);font-size:13px;color:var(--t2);backdrop-filter:blur(6px)}
  .chip-row{display:flex;gap:10px;overflow-x:auto;padding:26px 0 4px;scrollbar-width:none}
  .chip-row::-webkit-scrollbar{display:none}
  .chip{
    flex:none;display:inline-flex;align-items:center;gap:8px;
    padding:9px 17px;border-radius:999px;border:1px solid var(--line);
    font-size:14px;color:var(--t2);white-space:nowrap;
    transition:border-color .16s var(--ease),color .16s var(--ease),background .16s var(--ease);
  }
  .chip:hover{border-color:rgba(23,201,160,.5);color:var(--t1)}
  .chip.is-active{background:var(--jade-500);border-color:var(--jade-500);color:#062019;font-weight:600}

  /* ---------- 通用板块 ---------- */
  .section{padding:64px 0}
  @media (min-width:1024px){ .section{padding:104px 0} }
  .section--tight{padding-top:48px}
  .sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:40px}
  .sec-head h2{font-size:clamp(1.5rem,2.6vw,2.25rem);font-weight:700}
  .sec-sub{font-size:13px;color:var(--t2);margin-top:10px;max-width:44rem}
  .sec-link{font-size:14px;color:var(--jade-500);display:inline-flex;align-items:center;gap:8px}
  .sec-link i{font-size:12px;transition:transform .16s var(--ease)}
  .sec-link:hover i{transform:translateX(4px)}

  /* ---------- 能力非对称栅格 ---------- */
  .cap-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:22px;grid-auto-rows:minmax(176px,auto)}
  .cap-card{
    background:var(--ink-800);border:1px solid var(--line);border-radius:var(--radius-card);
    padding:24px;display:flex;flex-direction:column;gap:12px;
    transition:transform .16s var(--ease),border-color .16s var(--ease),box-shadow .16s var(--ease);
  }
  .cap-card:hover{transform:translateY(-4px);border-color:rgba(23,201,160,.3);box-shadow:var(--shadow-2)}
  .cap-card h3{font-size:1.125rem;font-weight:600}
  .cap-card p{font-size:14px;color:var(--t2);line-height:1.8}
  .cap-card__icon{
    width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
    background:rgba(23,201,160,.12);color:var(--jade-500);font-size:15px;flex:none;
  }
  .cap-card--lead{grid-column:span 6;grid-row:span 2;padding:0;overflow:hidden}
  .cap-card--lead img{width:100%;aspect-ratio:16/9;object-fit:cover;background:var(--ink-700)}
  .cap-card--lead .cap-card__body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:12px;flex:1}
  .cap-card--sm{grid-column:span 3}
  .cap-card__link{margin-top:auto;font-size:14px;color:var(--jade-500);display:inline-flex;align-items:center;gap:8px}
  .cap-card__link i{font-size:12px;transition:transform .16s var(--ease)}
  .cap-card:hover .cap-card__link i{transform:translateX(4px)}
  .badge-amber{
    display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:999px;
    background:rgba(242,169,59,.14);color:var(--amber-500);font-size:12px;
  }

  /* ---------- 数据带 ---------- */
  .stats-wrap{border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
  .stats{display:grid;grid-template-columns:repeat(4,1fr)}
  .stat{padding:34px 22px;border-left:1px solid var(--line)}
  .stat:first-child{border-left:0}
  .stat__num{font-size:clamp(1.75rem,3vw,2.35rem);font-weight:800;color:var(--jade-500);font-variant-numeric:tabular-nums;line-height:1.05}
  .stat__num small{font-size:14px;font-weight:600;margin-left:4px;color:var(--jade-500)}
  .stat__label{margin-top:10px;font-size:13px;color:var(--t2)}

  /* ---------- 浅色板块 ---------- */
  .section--paper{background:var(--paper);color:var(--ink-text)}
  .section--paper .sec-head h2{color:var(--ink-text)}
  .section--paper .sec-sub{color:var(--ink-text-2)}
  .step-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
  .step-card{
    background:#fff;border:1px solid var(--paper-line);border-radius:var(--radius-card);
    padding:24px;display:flex;flex-direction:column;gap:12px;
    transition:transform .16s var(--ease),box-shadow .16s var(--ease),border-color .16s var(--ease);
  }
  .step-card:hover{transform:translateY(-4px);box-shadow:0 12px 26px rgba(10,12,15,.1);border-color:rgba(23,201,160,.45)}
  .step-num{font-size:13px;font-weight:800;letter-spacing:.1em;color:var(--violet-500);font-variant-numeric:tabular-nums}
  .step-card h3{font-size:1.0625rem;font-weight:600;color:var(--ink-text)}
  .step-card p{font-size:14px;color:var(--ink-text-2);line-height:1.8}
  .scene-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin-top:36px}
  .scene-item{
    display:flex;gap:14px;align-items:flex-start;background:rgba(255,255,255,.7);
    border:1px solid var(--paper-line);border-radius:14px;padding:18px 20px;
  }
  .scene-item i{color:var(--jade-600);font-size:15px;margin-top:5px}
  .scene-item h4{font-size:15px;font-weight:600;color:var(--ink-text);margin-bottom:4px}
  .scene-item p{font-size:13.5px;color:var(--ink-text-2);line-height:1.75}

  /* ---------- 安全建议 ---------- */
  .security{display:grid;grid-template-columns:1fr;gap:40px;align-items:center}
  .check-list{display:flex;flex-direction:column;gap:14px;margin-top:26px}
  .check-list li{display:flex;gap:12px;align-items:flex-start;font-size:14.5px;color:var(--t2)}
  .check-list i{color:var(--jade-500);margin-top:6px;font-size:13px;flex:none}
  .security__figure{border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-1)}
  .security__figure img{width:100%;aspect-ratio:4/3;object-fit:cover;background:var(--ink-700);transition:transform .4s var(--ease)}
  .security__figure:hover img{transform:scale(1.03)}

  /* ---------- FAQ ---------- */
  .faq{max-width:820px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
  .faq-item{
    position:relative;border:1px solid var(--line);border-radius:14px;background:var(--ink-800);
    overflow:hidden;transition:border-color .16s var(--ease);
  }
  .faq-item:hover{border-color:rgba(23,201,160,.28)}
  .faq-item[open]{border-color:rgba(23,201,160,.38)}
  .faq-item[open]::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--jade-500)}
  .faq-q{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:56px;padding:0 20px;cursor:pointer;list-style:none}
  .faq-q::-webkit-details-marker{display:none}
  .faq-q::marker{content:""}
  .faq-q h3{font-size:16px;font-weight:600;line-height:1.5;padding:16px 0}
  .faq-icon{position:relative;width:16px;height:16px;flex:none}
  .faq-icon::before,.faq-icon::after{content:"";position:absolute;left:50%;top:50%;background:var(--jade-500);border-radius:2px;transform:translate(-50%,-50%)}
  .faq-icon::before{width:14px;height:2px}
  .faq-icon::after{width:2px;height:14px;transition:transform .25s var(--ease),opacity .25s var(--ease)}
  .faq-item[open] .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
  .faq-a{padding:0 20px 20px;font-size:14.5px;color:var(--t2);line-height:1.85}

  /* ---------- CTA 与表单 ---------- */
  .cta-panel{
    display:grid;grid-template-columns:1fr;gap:36px;
    background:var(--ink-800);border:1px solid var(--line);border-radius:24px;
    padding:32px 24px;
  }
  @media (min-width:1024px){ .cta-panel{padding:52px 48px} }
  .cta-panel h2{font-size:clamp(1.5rem,2.6vw,2.1rem);font-weight:700}
  .cta-panel__text p{color:var(--t2);font-size:15px;margin-top:16px}
  .cta-points{display:flex;flex-direction:column;gap:10px;margin:24px 0 28px}
  .cta-points li{display:flex;gap:10px;align-items:center;font-size:14px;color:var(--t2)}
  .cta-points i{color:var(--jade-500);font-size:12px}
  .form-card{background:var(--ink-900);border:1px solid var(--line);border-radius:var(--radius-card);padding:24px}
  .form-card h3{font-size:16px;font-weight:600;margin-bottom:18px}
  .field{display:flex;flex-direction:column;gap:8px;margin-bottom:16px}
  .field label{font-size:13px;color:var(--t2)}
  .field input,.field select,.field textarea{
    background:var(--ink-700);border:1px solid var(--line);border-radius:var(--radius-input);
    padding:12px 14px;font-size:15px;color:var(--t1);outline:none;width:100%;
    transition:border-color .16s var(--ease),box-shadow .16s var(--ease);
  }
  .field textarea{min-height:104px;resize:vertical;line-height:1.75}
  .field input:focus,.field select:focus,.field textarea:focus{border-color:var(--jade-500);box-shadow:0 0 0 3px rgba(23,201,160,.14)}
  .field input::placeholder,.field textarea::placeholder{color:var(--t3)}
  .form-hint{font-size:12.5px;color:var(--t3);margin-top:14px}
  .form-status{font-size:13px;color:var(--jade-500);margin-top:12px;min-height:20px}

  /* ---------- 页脚 ---------- */
  .site-footer{background:var(--ink-800);border-top:1px solid var(--line);padding:64px 0 28px;color:var(--t2)}
  .footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px}
  .footer-brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;color:var(--t1);font-size:16px;margin-bottom:14px}
  .site-footer p{font-size:14px;line-height:1.85;max-width:26rem}
  .site-footer h3{font-size:14px;color:var(--t1);margin-bottom:14px;letter-spacing:.02em}
  .site-footer ul{list-style:none;display:flex;flex-direction:column;gap:10px;font-size:14px}
  .site-footer a{transition:color .16s var(--ease)}
  .site-footer a:hover{color:var(--jade-500)}
  .footer-bottom{
    margin-top:40px;padding-top:20px;border-top:1px solid var(--line);
    display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;font-size:13px;color:var(--t3);
  }

  /* ---------- 动效 ---------- */
  .reveal{opacity:0;transform:translateY(10px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
  .reveal.is-in{opacity:1;transform:none}

  /* ---------- 响应式 ---------- */
  @media (max-width:1023px){
    .topbar{display:none}
    .brand--compact{display:inline-flex}
    .channels,.nav-search,.trend-chips{display:none}
    .nav-toggle{display:inline-flex;margin-left:auto}
    .cap-card--lead{grid-column:span 12;grid-row:auto}
    .cap-card--sm{grid-column:span 6}
    .step-grid{grid-template-columns:repeat(2,1fr)}
    .stats{grid-template-columns:repeat(2,1fr)}
    .stat{border-left:0;border-top:1px solid var(--line)}
    .stat:nth-child(1),.stat:nth-child(2){border-top:0}
    .stat:nth-child(even){border-left:1px solid var(--line)}
    .security{grid-template-columns:1fr}
    .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  }
  @media (min-width:1024px){
    .cat-hero__inner{grid-template-columns:7fr 5fr;gap:52px}
    .cat-hero{padding:64px 0 68px}
    .security{grid-template-columns:7fr 5fr;gap:56px}
    .cta-panel{grid-template-columns:7fr 5fr;align-items:start}
    .drawer,.drawer-mask{display:none}
  }
  @media (max-width:767px){
    .scene-grid{grid-template-columns:1fr}
    .cap-card--sm{grid-column:span 12}
    .step-grid{grid-template-columns:1fr}
    .sec-head{margin-bottom:28px}
    .faq-q{padding:0 16px}
    .faq-a{padding:0 16px 18px}
  }
  @media (max-width:639px){
    .stats{grid-template-columns:1fr}
    .stat{border-left:0}
    .stat:nth-child(even){border-left:0}
    .stat:nth-child(2){border-top:1px solid var(--line)}
    .footer-grid{grid-template-columns:1fr}
    .footer-grid > div:nth-child(4){order:-1}
    .footer-bottom{flex-direction:column}
  }
  @media (prefers-reduced-motion:reduce){
    *,*::before,*::after{animation:none!important;transition:none!important}
    html{scroll-behavior:auto}
    .reveal{opacity:1;transform:none}
  }

/* roulang page: category2 */
:root{
    --ink-900:#0A0C0F;
    --ink-800:#12161B;
    --ink-700:#1B2128;
    --line:rgba(255,255,255,.08);
    --paper:#F6F7F6;
    --paper-line:rgba(10,12,15,.08);
    --jade-500:#17C9A0;
    --jade-600:#12A986;
    --jade-050:#E7FAF4;
    --amber-500:#F2A93B;
    --violet-500:#7C6CFF;
    --t1:#F5F7F6;
    --t2:#A7B0B5;
    --t3:#6B747A;
    --dark-text:#14181C;
    --dark-sub:#4A5459;
    --radius-card:18px;
    --radius-field:12px;
    --shadow-1:0 1px 2px rgba(0,0,0,.4);
    --shadow-2:0 12px 28px rgba(0,0,0,.28);
    --ease:cubic-bezier(.22,.61,.36,1);
    --header-h:92px;
  }
  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%}
  body{
    margin:0;
    padding-top:var(--header-h);
    background:var(--ink-900);
    color:var(--t1);
    font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
    font-size:16px;
    line-height:1.85;
    letter-spacing:.01em;
    overflow-x:hidden;
  }
  img{max-width:100%;display:block}
  a{color:inherit;text-decoration:none}
  button{font-family:inherit}
  h1,h2,h3,h4{margin:0;letter-spacing:-.01em}
  h1{font-size:clamp(2rem,4.2vw,3.125rem);font-weight:800;line-height:1.08;letter-spacing:-.02em}
  h2{font-size:clamp(1.5rem,2.6vw,2.25rem);font-weight:700;line-height:1.2}
  h3{font-size:1.125rem;font-weight:600;line-height:1.4}
  p{margin:0}
  ul{margin:0;padding:0;list-style:none}
  .container{width:100%;max-width:1240px;margin:0 auto;padding:0 20px}
  .num{font-variant-numeric:tabular-nums;font-family:Manrope,Inter,"PingFang SC",system-ui,sans-serif}
  .sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
  :focus-visible{outline:2px solid var(--jade-500);outline-offset:2px}

  /* ============ Header ============ */
  .site-header{
    position:fixed;top:0;left:0;right:0;z-index:60;
    background:rgba(10,12,15,.86);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    border-bottom:1px solid var(--line);
    transition:background .2s var(--ease);
  }
  .site-header.is-condensed{background:rgba(10,12,15,.92)}
  .topbar{height:40px;border-bottom:1px solid var(--line)}
  .topbar__inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:16px}
  .brand{display:inline-flex;align-items:center;gap:9px;min-height:32px}
  .brand__dot{width:9px;height:9px;border-radius:50%;background:var(--jade-500);box-shadow:0 0 0 4px rgba(23,201,160,.16);flex:none}
  .brand__text{font-size:.95rem;font-weight:700;letter-spacing:-.01em;color:var(--t1)}
  .topbar__links{display:flex;align-items:center;gap:18px}
  .topbar__links a{font-size:13px;color:var(--t2);transition:color .16s var(--ease)}
  .topbar__links a:hover{color:var(--jade-500)}
  .topbar__cta{
    border:1px solid var(--line);border-radius:999px;padding:5px 14px;color:var(--t1)!important;
    transition:border-color .16s var(--ease),color .16s var(--ease)
  }
  .topbar__cta:hover{border-color:rgba(23,201,160,.6);color:var(--jade-500)!important}
  .channelbar{height:52px;transition:height .2s var(--ease)}
  .site-header.is-condensed .topbar{display:none}
  .site-header.is-condensed .channelbar{height:56px}
  .channelbar__inner{height:100%;display:flex;align-items:center;gap:20px}
  .channels{display:flex;align-items:center;gap:22px;flex:none}
  .channel{
    position:relative;display:inline-flex;align-items:center;height:100%;
    font-size:.95rem;color:var(--t2);padding:2px 0;
    transition:color .16s var(--ease)
  }
  .channel::after{
    content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
    background:var(--jade-500);transform:scaleX(0);transform-origin:left;
    transition:transform .2s var(--ease)
  }
  .channel:hover{color:var(--t1)}
  .channel:hover::after{transform:scaleX(1)}
  .channel.is-active{color:var(--jade-500);font-weight:600}
  .channel.is-active::after{transform:scaleX(1)}
  .search{position:relative;flex:1;max-width:240px;transition:max-width .24s var(--ease)}
  .search:focus-within{max-width:340px}
  .search input{
    width:100%;height:36px;border-radius:999px;border:1px solid var(--line);
    background:var(--ink-700);color:var(--t1);padding:0 40px 0 16px;font-size:14px;
    transition:border-color .16s var(--ease),box-shadow .16s var(--ease)
  }
  .search input::placeholder{color:var(--t3)}
  .search input:focus{outline:none;border-color:var(--jade-500);box-shadow:0 0 0 3px rgba(23,201,160,.12)}
  .search i{position:absolute;right:15px;top:50%;transform:translateY(-50%);color:var(--t3);font-size:13px}
  .hotwords{display:flex;align-items:center;gap:8px;margin-left:auto;flex:none}
  .hotword{
    font-size:13px;color:var(--amber-500);border:1px solid rgba(242,169,59,.28);
    border-radius:999px;padding:4px 12px;transition:background .16s var(--ease),border-color .16s var(--ease)
  }
  .hotword:hover{background:rgba(242,169,59,.12);border-color:rgba(242,169,59,.5)}
  .site-header.is-condensed .hotwords{display:none}
  .menu-toggle{
    display:none;width:44px;height:44px;border:1px solid var(--line);background:transparent;
    border-radius:12px;color:var(--t1);font-size:16px;cursor:pointer
  }
  .drawer{
    position:fixed;top:0;right:0;bottom:0;width:min(86vw,340px);z-index:80;
    background:var(--ink-800);border-left:1px solid var(--line);
    transform:translateX(102%);transition:transform .28s var(--ease);
    padding:22px 22px 32px;overflow-y:auto
  }
  .drawer.is-open{transform:none}
  .drawer__head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
  .drawer__close{width:40px;height:40px;border-radius:12px;border:1px solid var(--line);background:transparent;color:var(--t1);cursor:pointer}
  .drawer__title{font-size:13px;color:var(--t3);letter-spacing:.08em}
  .drawer nav a{
    display:flex;align-items:center;justify-content:space-between;
    min-height:48px;padding:0 14px;border-radius:12px;color:var(--t2);font-size:.95rem;
    border:1px solid transparent;transition:all .16s var(--ease)
  }
  .drawer nav a:hover,.drawer nav a.is-active{color:var(--jade-500);background:rgba(23,201,160,.08);border-color:rgba(23,201,160,.24)}
  .drawer .drawer__chips{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0}
  .backdrop{position:fixed;inset:0;background:rgba(4,6,8,.6);opacity:0;pointer-events:none;transition:opacity .28s var(--ease);z-index:70}
  .backdrop.is-open{opacity:1;pointer-events:auto}

  /* ============ Hero ============ */
  .cat-hero{
    position:relative;overflow:hidden;
    background:
      radial-gradient(760px 380px at 78% 8%, rgba(23,201,160,.10), transparent 70%),
      linear-gradient(180deg,#0A0C0F 0%, #0C1014 100%);
    border-bottom:1px solid var(--line);
    padding:54px 0 58px;
  }
  .cat-hero::before{
    content:"";position:absolute;inset:0;pointer-events:none;
    background-image:linear-gradient(to right,rgba(255,255,255,.035) 1px,transparent 1px),
                     linear-gradient(to bottom,rgba(255,255,255,.035) 1px,transparent 1px);
    background-size:64px 64px;
    mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 85%);
    -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 85%);
  }
  .cat-hero__inner{position:relative;display:grid;grid-template-columns:1.28fr .72fr;gap:48px;align-items:center}
  .breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--t3);margin-bottom:18px}
  .breadcrumb a{color:var(--t2)}
  .breadcrumb a:hover{color:var(--jade-500)}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--jade-500);
    background:rgba(23,201,160,.10);border:1px solid rgba(23,201,160,.28);
    border-radius:999px;padding:5px 14px;margin-bottom:18px
  }
  .cat-hero h1{margin-bottom:14px}
  .cat-hero__lead{color:var(--t2);font-size:1.0625rem;max-width:560px}
  .hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px}
  .btn{
    display:inline-flex;align-items:center;gap:8px;min-height:48px;
    padding:14px 28px;font-size:.95rem;font-weight:600;cursor:pointer;border:none;
    transition:background .16s var(--ease),color .16s var(--ease),border-color .16s var(--ease),transform .16s var(--ease)
  }
  .btn--primary{background:var(--jade-500);color:#04120E;border-radius:999px;box-shadow:var(--shadow-1)}
  .btn--primary:hover{background:var(--jade-600);transform:translateY(-1px)}
  .btn--ghost{
    background:transparent;color:var(--t1);border:1px solid var(--line);border-radius:6px
  }
  .btn--ghost:hover{border-color:var(--jade-500);color:var(--jade-500)}
  .btn i{transition:transform .16s var(--ease)}
  .btn:hover i.fa-arrow-right{transform:translateX(4px)}
  .hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
  .hero-meta span{
    font-size:13px;color:var(--t2);border:1px solid var(--line);border-radius:999px;
    padding:6px 14px;background:rgba(255,255,255,.02)
  }
  .hero-figure{
    position:relative;border-radius:var(--radius-card);overflow:hidden;
    border:1px solid var(--line);aspect-ratio:16/11;box-shadow:var(--shadow-1)
  }
  .hero-figure img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
  .hero-figure:hover img{transform:scale(1.03)}
  .hero-figure__tag{
    position:absolute;left:16px;bottom:16px;font-size:13px;color:#04120E;
    background:var(--jade-500);border-radius:999px;padding:6px 14px;font-weight:600
  }

  /* ============ Section base ============ */
  .section{padding:88px 0}
  .section--tight{padding:64px 0}
  .section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:34px}
  .section-head h2{margin-bottom:8px}
  .section-head .sub{font-size:13px;color:var(--t2)}
  .link-arrow{display:inline-flex;align-items:center;gap:8px;font-size:.875rem;color:var(--jade-500);font-weight:600}
  .link-arrow i{transition:transform .16s var(--ease)}
  .link-arrow:hover i{transform:translateX(4px)}

  /* ============ Chips ============ */
  .chip-row{
    display:flex;gap:10px;overflow-x:auto;padding:22px 0 4px;
    border-bottom:1px solid var(--line);scrollbar-width:none
  }
  .chip-row::-webkit-scrollbar{display:none}
  .chip{
    flex:none;font-size:.875rem;color:var(--t2);border:1px solid var(--line);
    border-radius:999px;padding:8px 18px;min-height:40px;display:inline-flex;align-items:center;
    transition:all .16s var(--ease)
  }
  .chip:hover{color:var(--t1);border-color:rgba(255,255,255,.24)}
  .chip.is-active{background:var(--jade-500);color:#04120E;border-color:var(--jade-500);font-weight:600}

  /* ============ Quick info bar ============ */
  .quickbar{
    display:grid;grid-template-columns:1.1fr 1.1fr 1fr;gap:18px;
    border:1px solid var(--line);border-radius:var(--radius-card);
    background:linear-gradient(180deg,rgba(27,33,40,.7),rgba(18,22,27,.7));
    padding:22px;margin-top:44px
  }
  .quickbar__item{display:flex;gap:14px;align-items:flex-start;padding-right:16px}
  .quickbar__item + .quickbar__item{border-left:1px solid var(--line);padding-left:18px}
  .quickbar__icon{
    width:42px;height:42px;flex:none;border-radius:12px;display:grid;place-items:center;
    background:rgba(23,201,160,.12);color:var(--jade-500);font-size:16px
  }
  .quickbar__item h3{font-size:.95rem;margin-bottom:4px}
  .quickbar__item p{font-size:13px;color:var(--t2);line-height:1.7}
  .quickbar__rank{display:flex;flex-direction:column;gap:10px}
  .quickbar__rank li{display:flex;gap:10px;font-size:13px;color:var(--t2)}
  .rank-no{color:var(--violet-500);font-weight:700;font-variant-numeric:tabular-nums}

  /* ============ Download cards ============ */
  .dl-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
  .dl-card{
    display:flex;flex-direction:column;background:var(--ink-800);
    border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;
    transition:transform .16s var(--ease),border-color .16s var(--ease),box-shadow .16s var(--ease)
  }
  .dl-card:hover{transform:translateY(-4px);border-color:rgba(23,201,160,.32);box-shadow:var(--shadow-2)}
  .dl-card__media{position:relative;aspect-ratio:16/9;background:var(--ink-700);overflow:hidden}
  .dl-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
  .dl-card:hover .dl-card__media img{transform:scale(1.03)}
  .badge{
    position:absolute;top:14px;left:14px;font-size:12px;font-weight:600;
    border-radius:999px;padding:5px 12px;background:var(--jade-050);color:#0A2A22
  }
  .badge--amber{background:rgba(242,169,59,.16);color:var(--amber-500);border:1px solid rgba(242,169,59,.34)}
  .dl-card__body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1}
  .dl-card__body h3{font-size:1.0625rem}
  .dl-card__body p{font-size:.9375rem;color:var(--t2);line-height:1.8}
  .dl-meta{display:flex;flex-wrap:wrap;gap:16px;font-size:13px;color:var(--t3);border-top:1px solid var(--line);padding-top:14px;margin-top:auto}
  .dl-meta span{display:inline-flex;align-items:center;gap:6px}
  .dl-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:16px}
  .btn--sm{min-height:42px;padding:10px 20px;font-size:.875rem}
  .tag-list{display:flex;flex-wrap:wrap;gap:8px}
  .tag{
    font-size:12px;color:var(--t2);border:1px solid var(--line);border-radius:999px;padding:4px 12px
  }

  /* ============ Steps ============ */
  .steps{
    background:var(--paper);color:var(--dark-text);
    padding:88px 0;border-top:1px solid var(--paper-line);border-bottom:1px solid var(--paper-line)
  }
  .steps h2{color:var(--dark-text)}
  .steps .sub{color:var(--dark-sub)}
  .step-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px;counter-reset:step}
  .step{
    background:#fff;border:1px solid var(--paper-line);border-radius:var(--radius-card);
    padding:26px 22px;position:relative;transition:transform .16s var(--ease),box-shadow .16s var(--ease)
  }
  .step:hover{transform:translateY(-4px);box-shadow:0 14px 30px rgba(10,12,15,.10)}
  .step__no{
    width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
    background:var(--jade-050);color:var(--jade-600);font-weight:800;margin-bottom:14px;
    font-variant-numeric:tabular-nums
  }
  .step h3{color:var(--dark-text);margin-bottom:8px;font-size:1rem}
  .step p{font-size:.9rem;color:var(--dark-sub);line-height:1.8}

  /* ============ Stats band ============ */
  .stats{
    background:var(--ink-900);border-bottom:1px solid var(--line);
    padding:56px 0
  }
  .stats__grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr))}
  .stat{padding:10px 26px;border-left:1px solid var(--line)}
  .stat:first-child{border-left:none;padding-left:0}
  .stat__num{
    display:inline-flex;align-items:baseline;gap:4px;font-size:clamp(1.8rem,3vw,2.5rem);
    font-weight:800;color:var(--jade-500);line-height:1.1
  }
  .stat__num small{font-size:1rem;font-weight:600;color:var(--t2)}
  .stat p{font-size:13px;color:var(--t2);margin-top:8px}

  /* ============ FAQ ============ */
  .faq-wrap{max-width:820px;margin:0 auto}
  .faq-item{
    border:1px solid var(--line);border-radius:14px;background:var(--ink-800);
    margin-bottom:14px;position:relative;overflow:hidden
  }
  .faq-item::before{
    content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--jade-500);
    transform:scaleY(0);transform-origin:top;transition:transform .2s var(--ease)
  }
  .faq-item.is-open::before{transform:scaleY(1)}
  .faq-q{
    width:100%;min-height:56px;display:flex;align-items:center;justify-content:space-between;gap:16px;
    background:transparent;border:none;color:var(--t1);cursor:pointer;text-align:left;
    padding:16px 22px;font-size:1.0625rem;font-weight:600;font-family:inherit
  }
  .faq-q i{color:var(--jade-500);transition:transform .2s var(--ease);flex:none}
  .faq-item.is-open .faq-q i{transform:rotate(45deg)}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .28s var(--ease)}
  .faq-a p{padding:0 22px 22px;color:var(--t2);font-size:.9375rem;line-height:1.85}

  /* ============ CTA ============ */
  .cta-band{
    position:relative;overflow:hidden;
    background:linear-gradient(135deg,rgba(23,201,160,.12),rgba(124,108,255,.10) 60%,rgba(10,12,15,0)),
                var(--ink-800);
    border-top:1px solid var(--line);border-bottom:1px solid var(--line);
    padding:76px 0
  }
  .cta-inner{display:grid;grid-template-columns:1.35fr .65fr;gap:40px;align-items:center}
  .cta-band h2{margin-bottom:12px}
  .cta-band p{color:var(--t2);max-width:560px}
  .cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px}
  .cta-card{
    background:var(--ink-900);border:1px solid var(--line);border-radius:var(--radius-card);
    padding:24px
  }
  .cta-card h3{font-size:1rem;margin-bottom:12px}
  .cta-card li{display:flex;justify-content:space-between;gap:12px;font-size:13px;color:var(--t2);padding:9px 0;border-bottom:1px dashed var(--line)}
  .cta-card li:last-child{border-bottom:none}
  .cta-card li strong{color:var(--t1);font-weight:600}

  /* ============ Footer ============ */
  .site-footer{background:#07090B;border-top:1px solid var(--line);padding:64px 0 28px}
  .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:34px}
  .footer-brand{display:inline-flex;align-items:center;gap:9px;font-size:1.0625rem;font-weight:700;margin-bottom:14px}
  .footer-grid p{font-size:.875rem;color:var(--t2);max-width:340px}
  .footer-grid h3{font-size:.9375rem;margin-bottom:16px}
  .footer-grid li{margin-bottom:10px}
  .footer-grid li a{font-size:.875rem;color:var(--t2);transition:color .16s var(--ease)}
  .footer-grid li a:hover{color:var(--jade-500)}
  .footer-bottom{
    margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
    display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
    font-size:13px;color:var(--t3)
  }

  /* ============ Reveal ============ */
  .reveal{opacity:0;transform:translateY(10px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
  .reveal.is-in{opacity:1;transform:none}

  /* ============ Responsive ============ */
  @media (max-width:1024px){
    :root{--header-h:92px}
    .channels{display:none}
    .hotwords{display:none}
    .search{max-width:none;flex:1}
    .menu-toggle{display:inline-grid;place-items:center}
    .cat-hero__inner{grid-template-columns:1fr;gap:34px}
    .hero-figure{aspect-ratio:16/9}
    .quickbar{grid-template-columns:1fr 1fr}
    .quickbar__rank{grid-column:1 / -1;border-left:none!important;padding-left:0!important;border-top:1px solid var(--line);padding-top:18px}
    .quickbar__item:nth-child(3){border-left:none;padding-left:0}
    .step-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
    .stats__grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:22px 0}
    .stat:nth-child(3){border-left:none;padding-left:0}
    .stat:nth-child(3),.stat:nth-child(4){border-top:1px solid var(--line);padding-top:22px}
    .cta-inner{grid-template-columns:1fr}
    .footer-grid{grid-template-columns:1fr 1fr}
  }
  @media (max-width:768px){
    body{padding-top:92px}
    .section{padding:60px 0}
    .section--tight{padding:48px 0}
    .cat-hero{padding:38px 0 44px}
    .dl-grid{grid-template-columns:1fr}
    .quickbar{grid-template-columns:1fr;padding:18px}
    .quickbar__item{border-left:none!important;padding-left:0!important;padding-right:0}
    .quickbar__item + .quickbar__item{border-top:1px solid var(--line);padding-top:16px}
    .steps{padding:60px 0}
    .step-grid{grid-template-columns:1fr}
    .stats{padding:44px 0}
    .stat{padding:10px 16px}
    .hero-cta .btn{flex:1 1 auto;justify-content:center}
    .footer-grid{grid-template-columns:1fr;gap:28px}
    .footer-grid > div:last-child{order:-1}
    .footer-bottom{flex-direction:column}
    .topbar__links a:not(.topbar__cta){display:none}
  }
  @media (max-width:520px){
    .brand__text{font-size:.875rem}
    .cta-actions .btn{width:100%;justify-content:center}
    .dl-meta{gap:10px}
  }
  @media (prefers-reduced-motion:reduce){
    *{animation:none!important;transition:none!important}
    .reveal{opacity:1;transform:none}
    .hero-figure img,.dl-card__media img{transform:none!important}
  }