/* roulang page: index */
:root{
  --bg:#0E1013; --bg-deep:#0A0B0E; --surface:#16191F; --surface-2:#1D2129;
  --line:rgba(255,255,255,.09); --line-strong:rgba(255,255,255,.18);
  --text:#F2F0EB; --text-2:#A8A6A0; --text-3:#6E6C67;
  --brand:#FF6B2C; --brand-ink:#12140F; --accent:#2ED3C6; --sand:#E8C36A; --paper:#F6F4F0;
  --r-xs:6px; --r-md:14px; --r-lg:24px;
  --ease:cubic-bezier(.2,.7,.2,1);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:ui-monospace,"SF Mono","JetBrains Mono",Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:var(--font-sans);font-size:16px;line-height:1.75;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
h1,h2,h3,h4,p,ul,ol,dl,dd,figure{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
::selection{background:var(--brand);color:var(--brand-ink)}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:var(--bg-deep)}
::-webkit-scrollbar-thumb{background:#2A2E36;border-radius:20px}
::-webkit-scrollbar-thumb:hover{background:#3A3F49}

.shell{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
@media(min-width:768px){.shell{padding-left:32px;padding-right:32px}}
@media(min-width:1024px){.shell{padding-left:40px;padding-right:40px}}
@media(min-width:1536px){.shell{max-width:1320px}}

.sec{padding:64px 0}
@media(min-width:768px){.sec{padding:96px 0}}
@media(min-width:1024px){.sec{padding:128px 0}}
.sec-line{border-top:1px solid var(--line)}

.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:12px;letter-spacing:.18em;color:var(--brand);margin-bottom:16px}
.eyebrow::before{content:"";width:16px;height:1px;background:var(--brand);display:block}
.h1{font-size:clamp(32px,6vw,62px);line-height:1.08;font-weight:800;letter-spacing:-.02em}
.h2{font-size:clamp(24px,3.4vw,38px);line-height:1.2;font-weight:700;letter-spacing:-.01em}
.h3{font-size:20px;line-height:1.35;font-weight:600}
@media(min-width:1024px){.h3{font-size:22px}}
.lead{color:var(--text-2);font-size:16px;line-height:1.75}
.muted{color:var(--text-2)}
.dim{color:var(--text-3)}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:0 26px;border-radius:999px;font-size:15px;font-weight:600;border:1px solid transparent;transition:transform .24s var(--ease),filter .24s var(--ease),box-shadow .24s var(--ease),background .24s var(--ease),border-color .24s var(--ease),color .24s var(--ease);white-space:nowrap}
.btn svg{transition:transform .24s var(--ease)}
.btn-primary{background:var(--brand);color:var(--brand-ink)}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 8px 24px rgba(255,107,44,.28)}
.btn-primary:hover svg{transform:translateX(4px)}
.btn-primary:active{transform:translateY(1px);box-shadow:none}
.btn-ghost{border-color:var(--line-strong);color:var(--text)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px)}
.btn-ghost:hover svg{transform:translateX(4px)}
.btn-ink{background:var(--brand-ink);color:var(--paper)}
.btn-ink:hover{transform:translateY(-2px);filter:brightness(1.15)}
.btn-sm{min-height:44px;padding:0 18px;font-size:14px}

.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-size:14px;font-weight:600;transition:gap .24s var(--ease),color .24s var(--ease)}
.link-arrow:hover{gap:10px;color:#FF8A55}

.pill{display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:var(--r-xs);font-size:12px;line-height:1;border:1px solid rgba(46,211,198,.45);color:var(--accent);background:rgba(46,211,198,.06)}
.pill-soft{border-color:var(--line-strong);color:var(--text-2);background:transparent}

.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);box-shadow:0 20px 60px rgba(0,0,0,.45);transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease)}
.card:hover{transform:translateY(-4px);border-color:rgba(255,107,44,.35);box-shadow:0 24px 70px rgba(0,0,0,.6)}

.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.in{opacity:1;transform:none}

.clamp2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.clamp3{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}

/* 顶部导航 */
.site-header{position:sticky;top:0;z-index:50;background:rgba(14,16,19,.72);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--line);transition:background .24s var(--ease),border-color .24s var(--ease)}
.site-header.is-stuck{background:rgba(14,16,19,.9);border-bottom-color:var(--line-strong)}
.nav-row{display:flex;align-items:center;gap:16px;height:72px;transition:height .24s var(--ease)}
.site-header.is-stuck .nav-row{height:60px}
.brand{display:flex;flex-direction:column;gap:2px;flex:0 0 auto}
.brand-main{font-size:15px;font-weight:700;line-height:1.15;color:var(--text);letter-spacing:0}
.brand-sub{font-size:10px;color:var(--text-3);letter-spacing:.12em}
@media(min-width:1024px){.brand-main{font-size:16px}}

.search-wrap{position:relative;display:flex;align-items:center;flex:1 1 auto;max-width:560px;height:48px;border-radius:999px;background:var(--surface-2);border:1px solid var(--line);transition:border-color .24s var(--ease),background .24s var(--ease)}
.search-wrap:focus-within{border-color:var(--brand);background:#22262E}
.search-wrap svg{flex:0 0 auto;margin-left:16px;color:var(--text-3)}
.search-wrap input{flex:1 1 auto;height:100%;background:transparent;border:0;outline:0;padding:0 10px;font-size:14px;color:var(--text)}
.search-wrap input::placeholder{color:var(--text-3)}
.search-submit{flex:0 0 auto;width:36px;height:36px;margin-right:6px;border-radius:999px;background:var(--brand);color:var(--brand-ink);display:flex;align-items:center;justify-content:center;transition:filter .24s var(--ease),transform .24s var(--ease)}
.search-submit:hover{filter:brightness(1.08);transform:translateY(-1px)}

.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.icon-btn{width:44px;height:44px;border-radius:999px;border:1px solid var(--line);display:none;align-items:center;justify-content:center;color:var(--text-2);transition:border-color .24s var(--ease),color .24s var(--ease)}
.icon-btn:hover{border-color:var(--brand);color:var(--brand)}

.pill-row{display:flex;align-items:center;gap:8px;overflow-x:auto;padding:0 0 10px;scrollbar-width:none}
.pill-row::-webkit-scrollbar{display:none}
.pill-row .p-chip{flex:0 0 auto;display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:999px;font-size:13px;color:var(--text-2);border:1px solid transparent;transition:color .24s var(--ease),background .24s var(--ease),border-color .24s var(--ease)}
.pill-row .p-chip:hover{color:var(--brand)}
.pill-row .p-chip.active{background:var(--brand);color:var(--brand-ink);font-weight:600}

.mobile-only{display:none}
@media(max-width:1023px){
  .search-wrap{display:none}
  .desktop-only{display:none}
  .mobile-only{display:flex}
}

/* 移动搜索层 */
.search-layer{position:fixed;inset:0;z-index:70;background:rgba(10,11,14,.96);backdrop-filter:blur(8px);padding:24px 20px;display:none}
.search-layer.open{display:block}
.search-layer .layer-box{max-width:640px;margin:0 auto}
.hot-words{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.hot-words a{display:inline-flex;align-items:center;min-height:40px;padding:0 16px;border-radius:999px;border:1px solid var(--line-strong);font-size:14px;color:var(--text-2);transition:border-color .24s var(--ease),color .24s var(--ease)}
.hot-words a:hover{border-color:var(--brand);color:var(--brand)}

/* 抽屉 */
.drawer{position:fixed;top:0;right:0;bottom:0;width:280px;max-width:86vw;background:var(--bg-deep);border-left:1px solid var(--line-strong);z-index:80;transform:translateX(102%);transition:transform .32s var(--ease);overflow-y:auto;padding:20px}
.drawer.open{transform:none}
.drawer a{display:flex;align-items:center;min-height:44px;padding:0 4px;font-size:15px;color:var(--text-2);border-bottom:1px solid var(--line);transition:color .24s var(--ease)}
.drawer a:hover,.drawer a.active{color:var(--brand)}
.mask{position:fixed;inset:0;background:rgba(0,0,0,.6);z-index:75;opacity:0;visibility:hidden;transition:opacity .32s var(--ease),visibility .32s var(--ease)}
.mask.open{opacity:1;visibility:visible}

/* Hero */
.hero{position:relative;overflow:hidden;padding:56px 0 64px}
@media(min-width:768px){.hero{padding:80px 0 96px}}
@media(min-width:1024px){.hero{padding:96px 0 120px}}
.hero-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.png');background-size:cover;background-position:center;opacity:.15;z-index:0}
.hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(14,16,19,.72),rgba(14,16,19,.96))}
.hero-glow{position:absolute;width:60vw;max-width:640px;aspect-ratio:1;right:-10%;top:-20%;background:radial-gradient(circle,rgba(255,107,44,.16),transparent 62%);filter:blur(10px);z-index:0;pointer-events:none}
.hero-inner{position:relative;z-index:1}
.mark{position:relative;color:var(--text);white-space:nowrap}
.mark::after{content:"";position:absolute;left:0;right:0;bottom:.06em;height:6px;border-radius:4px;background:rgba(255,107,44,.55);z-index:-1}

.stat-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:36px;padding-top:24px;border-top:1px solid var(--line)}
.stat-num{font-family:var(--font-num);font-size:clamp(24px,4vw,34px);font-weight:700;color:var(--brand);line-height:1.1}
.stat-label{font-size:13px;color:var(--text-3);margin-top:6px}

.portrait-main{aspect-ratio:9/16;border-radius:var(--r-lg);overflow:hidden;position:relative;border:1px solid var(--line);background:var(--surface-2)}
.portrait-side{aspect-ratio:9/16;border-radius:var(--r-lg);overflow:hidden;position:relative;border:1px solid var(--line);background:var(--surface-2)}
.portrait-main img,.portrait-side img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.portrait-main:hover img,.portrait-side:hover img{transform:scale(1.04)}

/* 横滑片段 */
.snap-track{display:flex;gap:16px;overflow-x:auto;scroll-snap-type:x mandatory;scrollbar-width:none;padding-bottom:12px;scroll-behavior:smooth}
.snap-track::-webkit-scrollbar{display:none}
.snap-track>*{scroll-snap-align:start;flex:0 0 auto}
.clip-card{width:calc((100% - 48px)/3.5);position:relative;aspect-ratio:9/16;border-radius:var(--r-md);overflow:hidden;border:1px solid var(--line);background:var(--surface-2);transition:transform .24s var(--ease),border-color .24s var(--ease)}
.clip-card:hover{transform:translateY(-4px);border-color:rgba(255,107,44,.35)}
.clip-card img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.clip-card:hover img{transform:scale(1.04)}
.clip-mask{position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,11,14,.15) 0%,rgba(10,11,14,.55) 55%,rgba(10,11,14,.94) 100%)}
.clip-dur{position:absolute;top:12px;left:12px;font-family:var(--font-num);font-size:12px;padding:2px 8px;border-radius:var(--r-xs);background:rgba(10,11,14,.7);border:1px solid var(--line-strong);color:var(--text-2)}
.clip-play{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:52px;height:52px;border-radius:999px;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.35);display:flex;align-items:center;justify-content:center;backdrop-filter:blur(4px);transition:transform .24s var(--ease),border-color .24s var(--ease),background .24s var(--ease)}
.clip-card:hover .clip-play{transform:translate(-50%,-50%) scale(1.06);border-color:var(--brand);background:rgba(255,107,44,.24)}
.clip-body{position:absolute;left:14px;right:14px;bottom:14px}
@media(max-width:1023px){.clip-card{width:calc((100% - 16px)/2.2)}}
@media(max-width:639px){.clip-card{width:86%}}

.track-fade{position:relative}
.track-fade::before,.track-fade::after{content:"";position:absolute;top:0;bottom:12px;width:48px;pointer-events:none;z-index:2}
.track-fade::before{left:0;background:linear-gradient(90deg,var(--bg),transparent)}
.track-fade::after{right:0;background:linear-gradient(270deg,var(--bg),transparent)}

/* 种草清单 */
.seed-grid{display:grid;gap:20px;grid-template-columns:1fr}
@media(min-width:1024px){.seed-grid{grid-template-columns:1fr 1fr;gap:24px;align-items:start}}
.seed-item{display:flex;gap:18px;padding:22px 0;border-top:1px solid var(--line)}
.seed-item:last-child{border-bottom:1px solid var(--line)}
.seed-no{font-family:var(--font-num);font-size:22px;font-weight:700;color:var(--brand);line-height:1.2;flex:0 0 auto;min-width:38px}

/* 列表卡 */
.latest-grid{display:grid;gap:20px;grid-template-columns:1fr}
@media(min-width:768px){.latest-grid{grid-template-columns:1fr 1fr;gap:24px}}
@media(min-width:1024px){.latest-grid{grid-template-columns:1.25fr 1fr;gap:32px}}
.latest-side{display:grid;gap:12px;align-content:start}
.latest-row{display:block;padding:16px 18px;border-radius:var(--r-md);border:1px solid var(--line);background:var(--surface);transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease)}
.latest-row:hover{transform:translateY(-4px);border-color:rgba(255,107,44,.35);box-shadow:0 20px 50px rgba(0,0,0,.55)}
.latest-row:hover .row-title{color:var(--brand)}
.row-title{font-size:16px;font-weight:600;line-height:1.45;color:var(--text);transition:color .24s var(--ease)}
.meta-line{display:flex;align-items:center;gap:10px;font-size:12px;color:var(--text-3)}
.meta-line .dot{width:3px;height:3px;border-radius:50%;background:var(--text-3)}

.empty-box{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;min-height:200px;text-align:center;border:1px dashed var(--line-strong);border-radius:var(--r-md);padding:28px;background:var(--surface)}

/* 口碑 */
.marquee{position:relative;overflow:hidden;padding:8px 0}
.marquee-track{display:flex;gap:16px;width:max-content;animation:marqueeMove 30s linear infinite}
.marquee:hover .marquee-track{animation-play-state:paused}
@keyframes marqueeMove{from{transform:translateX(0)}to{transform:translateX(-50%)}}
.review-card{width:300px;flex:0 0 auto;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);padding:18px}
.avatar{width:32px;height:32px;border-radius:999px;background:var(--surface-2);border:1px solid var(--line-strong);display:flex;align-items:center;justify-content:center;font-size:13px;color:var(--text-2);flex:0 0 auto}
.stars{color:var(--sand);font-size:12px;letter-spacing:2px}
@media(max-width:639px){
  .marquee-track{animation:none;overflow-x:auto;scroll-snap-type:x mandatory;scrollbar-width:none;padding-bottom:8px}
  .marquee-track::-webkit-scrollbar{display:none}
  .review-card{scroll-snap-align:start}
}

/* 米白转化带 */
.paper-band{background:var(--paper);color:#1A1C1F}
.paper-band .pb-title{font-size:clamp(26px,4.4vw,40px);line-height:1.15;font-weight:800;letter-spacing:-.02em;color:#14161A}
.paper-step{display:flex;gap:14px;padding:16px 0;border-top:1px solid rgba(20,22,26,.14)}
.paper-step:last-child{border-bottom:1px solid rgba(20,22,26,.14)}
.paper-no{font-family:var(--font-num);font-size:18px;font-weight:700;color:#E0561D;min-width:32px}

/* FAQ */
.faq-item{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;transition:border-color .24s var(--ease)}
.faq-item.open{border-color:rgba(255,107,44,.35)}
.faq-q{display:flex;align-items:center;gap:14px;width:100%;text-align:left;padding:20px 24px;min-height:44px;color:var(--text-2);font-size:16px;font-weight:600;transition:color .24s var(--ease)}
.faq-item.open .faq-q{color:var(--text)}
.faq-no{font-family:var(--font-num);font-size:13px;color:var(--text-3);flex:0 0 auto}
.faq-icon{margin-left:auto;flex:0 0 auto;color:var(--text-3);transition:transform .32s var(--ease),color .24s var(--ease)}
.faq-item.open .faq-icon{transform:rotate(45deg);color:var(--brand)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s var(--ease)}
.faq-a p{padding:0 24px 20px 60px;color:var(--text-2);font-size:15px;line-height:1.75}

/* 表单 */
.form-grid{display:grid;gap:18px;grid-template-columns:1fr}
@media(min-width:768px){.form-grid{grid-template-columns:1fr 1fr;gap:20px}}
.field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:8px}
.field input,.field textarea{width:100%;background:var(--surface-2);border:1px solid var(--line);border-radius:var(--r-xs);padding:12px 14px;font-size:15px;color:var(--text);transition:border-color .24s var(--ease)}
.field input{height:48px}
.field textarea{min-height:110px;resize:vertical}
.field input:focus,.field textarea:focus{outline:0;border-color:var(--brand)}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3)}
.form-msg{font-size:13px;margin-top:12px;display:none}
.form-msg.ok{display:block;color:var(--accent)}
.form-msg.err{display:block;color:#FF7A6A}

/* 页脚 */
.site-footer{background:var(--bg-deep);border-top:1px solid var(--line);padding:56px 0 28px}
.foot-grid{display:grid;gap:32px;grid-template-columns:1fr}
@media(min-width:768px){.foot-grid{grid-template-columns:1fr 1fr}}
@media(min-width:1024px){.foot-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}}
.foot-title{font-size:13px;letter-spacing:.12em;color:var(--text-3);margin-bottom:16px}
.foot-link{display:block;font-size:14px;color:var(--text-2);padding:6px 0;transition:color .24s var(--ease)}
.foot-link:hover{color:var(--brand)}
.foot-bottom{margin-top:40px;padding-top:20px;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:10px;font-size:12px;color:var(--text-3)}
@media(min-width:768px){.foot-bottom{flex-direction:row;align-items:center;justify-content:space-between}}
.mini-search{display:flex;align-items:center;height:44px;border-radius:999px;background:var(--surface-2);border:1px solid var(--line);margin-top:16px;max-width:320px}
.mini-search input{flex:1 1 auto;background:transparent;border:0;outline:0;padding:0 14px;font-size:13px;color:var(--text)}
.mini-search button{width:34px;height:34px;margin-right:5px;border-radius:999px;background:var(--brand);color:var(--brand-ink);display:flex;align-items:center;justify-content:center}

@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: article */
:root{
    --bg:#0E1013;
    --bg-deep:#0A0B0E;
    --surface:#16191F;
    --surface-2:#1D2129;
    --line:rgba(255,255,255,.09);
    --line-strong:rgba(255,255,255,.18);
    --text:#F2F0EB;
    --text-2:#A8A6A0;
    --text-3:#6E6C67;
    --brand:#FF6B2C;
    --brand-ink:#12140F;
    --accent:#2ED3C6;
    --sand:#E8C36A;
    --paper:#F6F4F0;
    --r-xs:6px;
    --r-md:14px;
    --r-lg:24px;
    --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
    --font-num:ui-monospace,"SF Mono","JetBrains Mono",Menlo,monospace;
    --ease:cubic-bezier(.2,.7,.2,1);
    --shadow-card:0 20px 60px rgba(0,0,0,.45);
    --shadow-card-hover:0 24px 64px rgba(0,0,0,.6);
  }

  *,*::before,*::after{ box-sizing:border-box; }

  html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; }

  body{
    margin:0;
    background:var(--bg);
    color:var(--text);
    font-family:var(--font-sans);
    font-size:16px;
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }

  img{ max-width:100%; display:block; }
  a{ color:inherit; text-decoration:none; }
  button{ font-family:inherit; }
  input,button,textarea{ font-family:inherit; }

  ::selection{ background:rgba(255,107,44,.35); color:#fff; }

  :focus-visible{
    outline:2px solid var(--brand);
    outline-offset:2px;
    border-radius:4px;
  }

  ::-webkit-scrollbar{ width:10px; height:10px; }
  ::-webkit-scrollbar-track{ background:var(--bg-deep); }
  ::-webkit-scrollbar-thumb{ background:#2A2E36; border-radius:999px; border:2px solid var(--bg-deep); }
  ::-webkit-scrollbar-thumb:hover{ background:#3A3F49; }

  .shell{
    width:100%;
    max-width:1200px;
    margin:0 auto;
    padding:0 20px;
  }
  @media (min-width:640px){ .shell{ padding:0 32px; } }
  @media (min-width:1024px){ .shell{ padding:0 40px; } }
  @media (min-width:1536px){ .shell{ max-width:1320px; } }

  .desktop-only{ display:none; }
  @media (min-width:1024px){
    .desktop-only{ display:inline-flex; }
    .mobile-only{ display:none !important; }
  }

  /* ---------- 头部导航 ---------- */
  .site-header{
    position:sticky;
    top:0;
    z-index:50;
    background:rgba(14,16,19,.86);
    backdrop-filter:blur(10px);
    -webkit-backdrop-filter:blur(10px);
    border-bottom:1px solid var(--line);
    transition:background 240ms var(--ease), border-color 240ms var(--ease);
  }

  .nav-row{
    display:flex;
    align-items:center;
    gap:16px;
    min-height:72px;
    transition:min-height 240ms var(--ease);
  }
  .site-header.is-scrolled .nav-row{ min-height:60px; }

  .brand{
    display:flex;
    flex-direction:column;
    justify-content:center;
    gap:1px;
    flex:none;
    padding:4px 0;
  }
  .brand-main{
    font-size:15px;
    font-weight:700;
    line-height:1.25;
    color:var(--text);
    letter-spacing:-.01em;
    white-space:nowrap;
  }
  .brand-sub{
    font-size:10px;
    line-height:1.4;
    color:var(--text-3);
    letter-spacing:.16em;
    white-space:nowrap;
  }

  .search-wrap{
    position:relative;
    display:flex;
    align-items:center;
    flex:1 1 auto;
    max-width:560px;
    height:48px;
    margin:0 auto;
    padding:0 6px 0 16px;
    background:var(--surface-2);
    border:1px solid var(--line);
    border-radius:999px;
    transition:border-color 240ms var(--ease), background 240ms var(--ease);
  }
  .search-wrap:focus-within{
    border-color:var(--brand);
    background:#20242C;
  }
  .search-wrap > svg{ color:var(--text-3); flex:none; }
  .search-wrap input{
    flex:1 1 auto;
    min-width:0;
    height:100%;
    padding:0 12px;
    background:transparent;
    border:0;
    outline:none;
    color:var(--text);
    font-size:14px;
  }
  .search-wrap input::placeholder{ color:var(--text-3); }
  .search-submit{
    flex:none;
    width:36px;
    height:36px;
    display:grid;
    place-items:center;
    background:var(--brand);
    color:var(--brand-ink);
    border:0;
    border-radius:999px;
    cursor:pointer;
    transition:transform 240ms var(--ease), filter 240ms var(--ease);
  }
  .search-submit:hover{ filter:brightness(1.06); transform:translateY(-1px); }
  .search-submit:active{ transform:translateY(0); }

  .nav-actions{
    display:flex;
    align-items:center;
    gap:8px;
    flex:none;
    margin-left:auto;
  }

  .icon-btn{
    width:44px;
    height:44px;
    display:grid;
    place-items:center;
    background:var(--surface-2);
    border:1px solid var(--line);
    border-radius:999px;
    color:var(--text-2);
    cursor:pointer;
    transition:border-color 240ms var(--ease), color 240ms var(--ease), transform 240ms var(--ease);
  }
  .icon-btn:hover{ color:var(--brand); border-color:rgba(255,107,44,.45); transform:translateY(-1px); }

  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    min-height:44px;
    padding:12px 20px;
    border-radius:999px;
    border:1px solid transparent;
    font-size:14px;
    font-weight:600;
    cursor:pointer;
    transition:transform 240ms var(--ease), filter 240ms var(--ease), box-shadow 240ms var(--ease), border-color 240ms var(--ease), color 240ms var(--ease), background 240ms var(--ease);
  }
  .btn-sm{ min-height:40px; padding:9px 16px; font-size:13px; }
  .btn-primary{ background:var(--brand); color:var(--brand-ink); }
  .btn-primary:hover{ filter:brightness(1.06); transform:translateY(-2px); box-shadow:0 8px 24px rgba(255,107,44,.28); }
  .btn-primary:active{ transform:translateY(-1px); }
  .btn-ghost{
    background:transparent;
    color:var(--text-2);
    border-color:var(--line-strong);
  }
  .btn-ghost:hover{ color:var(--brand); border-color:rgba(255,107,44,.45); transform:translateY(-2px); }

  .pill-row{
    display:flex;
    align-items:center;
    gap:8px;
    overflow-x:auto;
    padding:0 0 12px;
    scrollbar-width:none;
  }
  .pill-row::-webkit-scrollbar{ display:none; }
  .p-chip{
    flex:none;
    display:inline-flex;
    align-items:center;
    height:32px;
    padding:0 14px;
    border-radius:999px;
    border:1px solid var(--line);
    background:transparent;
    color:var(--text-2);
    font-size:13px;
    white-space:nowrap;
    transition:color 240ms var(--ease), border-color 240ms var(--ease), background 240ms var(--ease);
  }
  .p-chip:hover{ color:var(--brand); border-color:rgba(255,107,44,.4); }
  .p-chip.active{ background:var(--brand); border-color:var(--brand); color:var(--brand-ink); font-weight:600; }

  /* ---------- 移动端抽屉 / 搜索层 ---------- */
  .drawer-mask{
    position:fixed;
    inset:0;
    background:rgba(6,7,9,.7);
    opacity:0;
    visibility:hidden;
    transition:opacity 240ms var(--ease), visibility 240ms var(--ease);
    z-index:60;
  }
  .drawer-mask.open{ opacity:1; visibility:visible; }

  .drawer{
    position:fixed;
    top:0;
    right:0;
    width:280px;
    max-width:84vw;
    height:100%;
    background:var(--surface);
    border-left:1px solid var(--line);
    transform:translateX(100%);
    transition:transform 280ms var(--ease);
    z-index:70;
    overflow-y:auto;
    padding:20px;
  }
  .drawer.open{ transform:translateX(0); }
  .drawer-title{ font-size:12px; letter-spacing:.16em; color:var(--text-3); margin:20px 0 8px; }
  .drawer-link{
    display:flex;
    align-items:center;
    min-height:46px;
    padding:0 4px;
    font-size:15px;
    color:var(--text-2);
    border-bottom:1px solid var(--line);
    transition:color 240ms var(--ease);
  }
  .drawer-link:hover{ color:var(--brand); }

  .search-layer{
    position:fixed;
    top:0;
    left:0;
    right:0;
    background:var(--bg-deep);
    border-bottom:1px solid var(--line);
    padding:16px 20px 20px;
    z-index:80;
    transform:translateY(-110%);
    transition:transform 280ms var(--ease);
  }
  .search-layer.open{ transform:translateY(0); }
  .layer-form{
    display:flex;
    align-items:center;
    gap:10px;
    height:48px;
    padding:0 6px 0 16px;
    background:var(--surface-2);
    border:1px solid var(--line);
    border-radius:999px;
  }
  .layer-form:focus-within{ border-color:var(--brand); }
  .layer-form input{
    flex:1 1 auto;
    min-width:0;
    height:100%;
    background:transparent;
    border:0;
    outline:none;
    color:var(--text);
    font-size:14px;
  }
  .hot-words{ display:flex; flex-wrap:wrap; gap:8px; margin-top:14px; }
  .hot-words a{
    display:inline-flex;
    align-items:center;
    height:32px;
    padding:0 14px;
    border-radius:999px;
    border:1px solid var(--line);
    font-size:13px;
    color:var(--text-2);
    transition:color 240ms var(--ease), border-color 240ms var(--ease);
  }
  .hot-words a:hover{ color:var(--brand); border-color:rgba(255,107,44,.4); }

  /* ---------- 面包屑 ---------- */
  .crumbs{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:8px;
    padding:28px 0 0;
    font-size:13px;
    color:var(--text-3);
  }
  .crumbs a{ color:var(--text-2); transition:color 240ms var(--ease); }
  .crumbs a:hover{ color:var(--brand); }
  .crumbs .divider{ color:var(--text-3); }

  /* ---------- 文章头部 ---------- */
  .eyebrow{
    display:inline-flex;
    align-items:center;
    gap:8px;
    font-size:12px;
    letter-spacing:.16em;
    color:var(--brand);
    text-transform:uppercase;
  }
  .eyebrow::before{
    content:"";
    width:16px;
    height:1px;
    background:var(--brand);
    display:block;
  }

  .article-head{ padding:20px 0 0; max-width:860px; }

  .cat-pill{
    display:inline-flex;
    align-items:center;
    height:28px;
    padding:0 12px;
    border-radius:999px;
    border:1px solid rgba(46,211,198,.45);
    color:var(--accent);
    font-size:12px;
    letter-spacing:.06em;
  }

  .article-title{
    margin:16px 0 0;
    font-size:clamp(30px,4.6vw,50px);
    line-height:1.16;
    font-weight:800;
    letter-spacing:-.02em;
    color:var(--text);
    word-break:break-word;
  }

  .meta-bar{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:10px 14px;
    margin-top:18px;
    font-family:var(--font-num);
    font-size:13px;
    color:var(--text-3);
  }
  .meta-bar .sep{
    display:inline-block;
    width:1px;
    height:12px;
    background:var(--line-strong);
  }
  .meta-bar .hl{ color:var(--accent); }

  .article-cover{
    margin:28px 0 0;
    border-radius:var(--r-lg);
    overflow:hidden;
    border:1px solid var(--line);
    background:var(--surface-2);
    box-shadow:var(--shadow-card);
  }
  .article-cover img{
    width:100%;
    aspect-ratio:16/9;
    object-fit:cover;
  }

  /* ---------- 正文排版 ---------- */
  .article-layout{
    display:grid;
    grid-template-columns:minmax(0,1fr);
    gap:40px;
    padding:40px 0 0;
  }
  @media (min-width:1280px){
    .article-layout{
      grid-template-columns:minmax(0,760px) 220px;
      justify-content:center;
      gap:56px;
    }
  }

  .article-body{
    max-width:760px;
    font-size:17px;
    line-height:1.9;
    color:var(--text-2);
    word-break:break-word;
  }
  .article-body > *:first-child{ margin-top:0; }
  .article-body p{ margin:0 0 22px; }
  .article-body p:first-of-type{
    font-size:18px;
    color:var(--text);
    font-weight:500;
  }
  .article-body h2{
    position:relative;
    margin:44px 0 18px;
    padding-left:14px;
    font-size:clamp(20px,2.4vw,26px);
    line-height:1.35;
    font-weight:700;
    color:var(--text);
  }
  .article-body h2::before{
    content:"";
    position:absolute;
    left:0;
    top:6px;
    bottom:6px;
    width:3px;
    border-radius:2px;
    background:var(--brand);
  }
  .article-body h3{
    margin:32px 0 14px;
    font-size:19px;
    line-height:1.4;
    font-weight:600;
    color:var(--text);
  }
  .article-body h4{
    margin:24px 0 12px;
    font-size:17px;
    font-weight:600;
    color:var(--text);
  }
  .article-body a{
    color:var(--accent);
    border-bottom:1px solid rgba(46,211,198,.35);
    transition:border-color 240ms var(--ease), color 240ms var(--ease);
  }
  .article-body a:hover{ color:var(--brand); border-color:rgba(255,107,44,.5); }
  .article-body strong{ color:var(--text); font-weight:600; }
  .article-body ul,
  .article-body ol{ margin:0 0 22px; padding-left:22px; }
  .article-body li{ margin:0 0 10px; }
  .article-body ul li{ list-style:none; position:relative; padding-left:16px; }
  .article-body ul li::before{
    content:"";
    position:absolute;
    left:0;
    top:.72em;
    width:6px;
    height:6px;
    background:var(--brand);
    border-radius:1px;
  }
  .article-body ol li::marker{ color:var(--brand); font-family:var(--font-num); }
  .article-body blockquote{
    margin:28px 0;
    padding:18px 22px;
    background:var(--surface);
    border-left:3px solid var(--accent);
    border-radius:0 var(--r-md) var(--r-md) 0;
    color:var(--text-2);
    font-size:16px;
  }
  .article-body blockquote p:last-child{ margin-bottom:0; }
  .article-body img{
    width:100%;
    border-radius:var(--r-md);
    margin:24px 0 8px;
    border:1px solid var(--line);
  }
  .article-body figure{ margin:28px 0; }
  .article-body figcaption{
    font-size:14px;
    color:var(--text-3);
    text-align:center;
    margin-top:8px;
  }
  .article-body table{
    width:100%;
    border-collapse:collapse;
    margin:26px 0;
    font-size:15px;
  }
  .article-body th,
  .article-body td{
    border:1px solid var(--line);
    padding:12px 14px;
    text-align:left;
    vertical-align:top;
  }
  .article-body th{ color:var(--text); font-weight:600; background:var(--surface); }
  .article-body hr{
    border:0;
    border-top:1px solid var(--line);
    margin:36px 0;
  }
  .article-body code{
    font-family:var(--font-num);
    font-size:14px;
    background:var(--surface-2);
    border:1px solid var(--line);
    border-radius:var(--r-xs);
    padding:2px 6px;
    color:var(--accent);
  }

  /* 空状态 */
  .empty-state{
    display:flex;
    flex-direction:column;
    align-items:center;
    justify-content:center;
    gap:14px;
    min-height:260px;
    padding:40px 24px;
    background:var(--surface);
    border:1px dashed var(--line-strong);
    border-radius:var(--r-lg);
    text-align:center;
  }
  .empty-state .empty-icon{
    width:52px;
    height:52px;
    display:grid;
    place-items:center;
    border-radius:999px;
    background:var(--surface-2);
    color:var(--text-3);
    border:1px solid var(--line);
  }
  .empty-state h2{ margin:0; font-size:19px; color:var(--text); font-weight:600; }
  .empty-state p{ margin:0; font-size:14px; color:var(--text-3); max-width:420px; }

  /* 侧边目录 */
  .toc-col{ display:none; }
  @media (min-width:1280px){
    .toc-col{ display:block; }
    .toc-inner{ position:sticky; top:96px; }
  }
  .toc-title{
    font-size:12px;
    letter-spacing:.16em;
    color:var(--text-3);
    margin-bottom:12px;
  }
  .toc-list{ display:flex; flex-direction:column; gap:2px; border-left:1px solid var(--line); }
  .toc-list a{
    display:block;
    padding:7px 0 7px 14px;
    font-size:13.5px;
    color:var(--text-2);
    border-left:2px solid transparent;
    margin-left:-1px;
    transition:color 240ms var(--ease), border-color 240ms var(--ease);
  }
  .toc-list a:hover{ color:var(--text); }
  .toc-list a.is-current{ color:var(--brand); border-left-color:var(--brand); }

  /* 标签 */
  .tag-row{
    display:flex;
    flex-wrap:wrap;
    gap:8px;
    margin-top:44px;
    padding-top:24px;
    border-top:1px solid var(--line);
  }
  .tag-pill{
    display:inline-flex;
    align-items:center;
    height:32px;
    padding:0 14px;
    border-radius:999px;
    background:var(--surface);
    border:1px solid var(--line);
    font-size:13px;
    color:var(--text-2);
    transition:color 240ms var(--ease), border-color 240ms var(--ease);
  }
  .tag-pill:hover{ color:var(--brand); border-color:rgba(255,107,44,.4); }

  /* 上下篇 */
  .prevnext{
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(240px,1fr));
    gap:16px;
    margin-top:32px;
  }
  .pn-card{
    display:flex;
    flex-direction:column;
    gap:8px;
    padding:20px;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-md);
    transition:border-color 240ms var(--ease), transform 240ms var(--ease), box-shadow 240ms var(--ease);
  }
  .pn-card:hover{
    transform:translateY(-4px);
    border-color:rgba(255,107,44,.35);
    box-shadow:var(--shadow-card-hover);
  }
  .pn-label{ font-size:12px; letter-spacing:.16em; color:var(--text-3); }
  .pn-title{ font-size:15px; font-weight:600; color:var(--text); line-height:1.5; }

  /* 相关推荐 */
  .section{ padding:56px 0; border-top:1px solid var(--line); }
  @media (min-width:768px){ .section{ padding:72px 0; } }
  @media (min-width:1024px){ .section{ padding:88px 0; } }

  .section-head{
    display:flex;
    flex-wrap:wrap;
    align-items:flex-end;
    justify-content:space-between;
    gap:16px;
    margin-bottom:32px;
  }
  .section-head h2{
    margin:8px 0 0;
    font-size:clamp(24px,3.4vw,38px);
    line-height:1.2;
    font-weight:700;
    color:var(--text);
    letter-spacing:-.01em;
  }
  .section-head p{
    margin:10px 0 0;
    font-size:15px;
    color:var(--text-2);
    max-width:560px;
  }
  .text-link{
    display:inline-flex;
    align-items:center;
    gap:6px;
    font-size:14px;
    font-weight:600;
    color:var(--text-2);
    transition:color 240ms var(--ease);
  }
  .text-link svg{ transition:transform 240ms var(--ease); }
  .text-link:hover{ color:var(--brand); }
  .text-link:hover svg{ transform:translateX(4px); }

  .card-grid{
    display:grid;
    grid-template-columns:1fr;
    gap:20px;
  }
  @media (min-width:640px){ .card-grid{ grid-template-columns:repeat(2,minmax(0,1fr)); gap:24px; } }
  @media (min-width:1024px){ .card-grid{ grid-template-columns:repeat(3,minmax(0,1fr)); gap:24px; } }

  .card{
    display:flex;
    flex-direction:column;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-md);
    overflow:hidden;
    transition:transform 240ms var(--ease), border-color 240ms var(--ease), box-shadow 240ms var(--ease);
  }
  .card:hover{
    transform:translateY(-4px);
    border-color:rgba(255,107,44,.35);
    box-shadow:var(--shadow-card-hover);
  }
  .card-media{
    aspect-ratio:16/9;
    overflow:hidden;
    background:var(--surface-2);
    display:grid;
    place-items:center;
    color:var(--text-3);
  }
  .card-media img{
    width:100%;
    height:100%;
    object-fit:cover;
    transition:transform 600ms var(--ease);
  }
  .card:hover .card-media img{ transform:scale(1.04); }
  .card-body{
    display:flex;
    flex-direction:column;
    gap:10px;
    padding:18px 20px 20px;
    flex:1 1 auto;
  }
  .card-meta{
    display:flex;
    align-items:center;
    gap:10px;
    font-family:var(--font-num);
    font-size:12px;
    color:var(--text-3);
  }
  .card-title{
    margin:0;
    font-size:16px;
    line-height:1.5;
    font-weight:600;
    color:var(--text);
    display:-webkit-box;
    -webkit-line-clamp:2;
    -webkit-box-orient:vertical;
    overflow:hidden;
    transition:color 240ms var(--ease);
  }
  .card:hover .card-title{ color:var(--brand); }

  /* 返回入口 */
  .back-entry{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    justify-content:space-between;
    gap:20px;
    padding:28px;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-lg);
  }
  .back-entry h2{ margin:0 0 6px; font-size:20px; font-weight:700; color:var(--text); }
  .back-entry p{ margin:0; font-size:14px; color:var(--text-2); }

  /* ---------- 页脚 ---------- */
  .site-footer{
    background:var(--bg-deep);
    border-top:1px solid var(--line);
    padding:56px 0 32px;
    margin-top:72px;
  }
  .foot-grid{
    display:grid;
    grid-template-columns:1fr;
    gap:32px;
  }
  @media (min-width:640px){ .foot-grid{ grid-template-columns:repeat(2,minmax(0,1fr)); } }
  @media (min-width:1024px){ .foot-grid{ grid-template-columns:1.6fr 1fr 1fr 1fr; gap:40px; } }

  .foot-title{
    font-size:13px;
    letter-spacing:.12em;
    color:var(--text-3);
    margin-bottom:14px;
  }
  .foot-link{
    display:block;
    padding:7px 0;
    font-size:14px;
    color:var(--text-2);
    transition:color 240ms var(--ease);
  }
  .foot-link:hover{ color:var(--brand); }

  .lead{ color:var(--text-2); line-height:1.7; margin:0 0 16px; }

  .mini-search{
    display:flex;
    align-items:center;
    gap:8px;
    max-width:320px;
    height:42px;
    padding:0 5px 0 14px;
    background:var(--surface-2);
    border:1px solid var(--line);
    border-radius:999px;
    transition:border-color 240ms var(--ease);
  }
  .mini-search:focus-within{ border-color:var(--brand); }
  .mini-search input{
    flex:1 1 auto;
    min-width:0;
    height:100%;
    background:transparent;
    border:0;
    outline:none;
    color:var(--text);
    font-size:13px;
  }
  .mini-search input::placeholder{ color:var(--text-3); }
  .mini-search button{
    width:32px;
    height:32px;
    flex:none;
    display:grid;
    place-items:center;
    border:0;
    border-radius:999px;
    background:var(--brand);
    color:var(--brand-ink);
    cursor:pointer;
  }

  .foot-bottom{
    display:flex;
    flex-wrap:wrap;
    gap:10px 24px;
    justify-content:space-between;
    align-items:center;
    margin-top:40px;
    padding-top:22px;
    border-top:1px solid var(--line);
    font-size:13px;
    color:var(--text-3);
  }

  .reveal{
    opacity:0;
    transform:translateY(16px);
    transition:opacity 500ms var(--ease), transform 500ms var(--ease);
  }
  .reveal.in{ opacity:1; transform:none; }

  @media (prefers-reduced-motion: reduce){
    *{ animation:none !important; transition:none !important; }
    .reveal{ opacity:1; transform:none; }
    html{ scroll-behavior:auto; }
  }

/* roulang page: category2 */
:root{
    --bg:#0E1013;
    --bg-deep:#0A0B0E;
    --surface:#16191F;
    --surface-2:#1D2129;
    --line:rgba(255,255,255,.09);
    --line-strong:rgba(255,255,255,.18);
    --text:#F2F0EB;
    --text-2:#A8A6A0;
    --text-3:#6E6C67;
    --brand:#FF6B2C;
    --brand-ink:#12140F;
    --accent:#2ED3C6;
    --sand:#E8C36A;
    --paper:#F6F4F0;
    --r-xs:6px;
    --r-md:14px;
    --r-lg:24px;
    --shadow-card:0 20px 60px rgba(0,0,0,.45);
    --shadow-card-hover:0 24px 64px rgba(0,0,0,.6);
    --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
    --font-num:ui-monospace,"SF Mono","JetBrains Mono",Menlo,monospace;
    --ease:cubic-bezier(.2,.7,.2,1);
  }

  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  body{
    margin:0;
    background:var(--bg);
    color:var(--text);
    font-family:var(--font-sans);
    font-size:16px;
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  h1,h2,h3,h4,p,figure,blockquote{margin:0}
  ul,ol{margin:0;padding:0;list-style:none}
  a{color:inherit;text-decoration:none}
  img{display:block;max-width:100%;height:auto}
  button{background:none;border:0;cursor:pointer;font:inherit;color:inherit}
  input,textarea,select{font:inherit;color:inherit}
  ::selection{background:var(--brand);color:var(--brand-ink)}
  :focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
  ::-webkit-scrollbar{width:10px;height:10px}
  ::-webkit-scrollbar-track{background:var(--bg-deep)}
  ::-webkit-scrollbar-thumb{background:#2A2E36;border-radius:8px}
  ::-webkit-scrollbar-thumb:hover{background:#3A3F49}

  .shell{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
  @media (min-width:768px){.shell{padding-left:32px;padding-right:32px}}
  @media (min-width:1024px){.shell{padding-left:40px;padding-right:40px}}
  @media (min-width:1536px){.shell{max-width:1320px}}

  .sec{padding:56px 0;border-top:1px solid var(--line)}
  @media (min-width:768px){.sec{padding:80px 0}}
  @media (min-width:1024px){.sec{padding:96px 0}}
  .sec-inner{padding-top:56px;padding-bottom:56px}
  @media (min-width:768px){.sec-inner{padding-top:80px;padding-bottom:80px}}

  .eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:12px;letter-spacing:.18em;color:var(--brand);font-weight:600;margin-bottom:16px}
  .eyebrow::before{content:"";display:block;width:16px;height:1px;background:var(--brand)}

  .sec-title{font-size:clamp(24px,3.4vw,38px);line-height:1.2;font-weight:700;letter-spacing:-.01em;color:var(--text)}
  .sec-sub{margin-top:14px;max-width:660px;color:var(--text-2);font-size:15.5px;line-height:1.8}
  .sec-head{display:flex;flex-wrap:wrap;gap:16px;align-items:flex-end;justify-content:space-between;margin-bottom:36px}
  @media (min-width:768px){.sec-head{margin-bottom:48px}}

  .text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--accent);border-bottom:1px solid rgba(46,211,198,.35);padding-bottom:2px;transition:color .24s var(--ease),border-color .24s var(--ease)}
  .text-link .arw{transition:transform .24s var(--ease)}
  .text-link:hover{color:var(--brand);border-color:rgba(255,107,44,.5)}
  .text-link:hover .arw{transform:translateX(4px)}

  /* ---------- header ---------- */
  .site-header{position:sticky;top:0;z-index:50;background:rgba(14,16,19,.86);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--line);transition:background .24s var(--ease)}
  .site-header.scrolled{background:rgba(10,11,14,.94)}
  .nav-row{display:flex;align-items:center;gap:16px;height:72px;transition:height .24s var(--ease)}
  .site-header.scrolled .nav-row{height:60px}
  .brand{display:flex;flex-direction:column;gap:1px;flex-shrink:0}
  .brand-main{font-size:16px;font-weight:700;color:var(--text);white-space:nowrap;line-height:1.25}
  .brand-sub{font-size:10px;letter-spacing:.16em;color:var(--text-3);white-space:nowrap}
  @media (max-width:640px){
    .brand-main{font-size:13px}
    .brand-sub{font-size:9px;letter-spacing:.1em}
  }

  .search-wrap{display:flex;align-items:center;gap:10px;height:48px;padding:0 6px 0 16px;background:var(--surface-2);border:1px solid var(--line);border-radius:999px;transition:border-color .24s var(--ease),background .24s var(--ease)}
  .search-wrap:focus-within{border-color:var(--brand);background:#22262F}
  .search-wrap svg{color:var(--text-3);flex-shrink:0}
  .search-wrap input{flex:1;min-width:0;height:100%;background:transparent;border:0;outline:0;font-size:14px;color:var(--text)}
  .search-wrap input::placeholder{color:var(--text-3)}
  .search-submit{flex-shrink:0;width:36px;height:36px;border-radius:999px;background:var(--brand);color:var(--brand-ink);display:grid;place-items:center;transition:filter .24s var(--ease),transform .24s var(--ease)}
  .search-submit:hover{filter:brightness(1.08)}
  .search-submit:active{transform:translateY(1px)}
  .nav-row .search-wrap{flex:1 1 auto;max-width:560px;margin:0 auto}

  .nav-actions{display:flex;align-items:center;gap:10px;margin-left:auto;flex-shrink:0}
  .icon-btn{width:44px;height:44px;display:grid;place-items:center;border-radius:999px;border:1px solid var(--line);color:var(--text-2);transition:color .24s var(--ease),border-color .24s var(--ease),background .24s var(--ease)}
  .icon-btn:hover{color:var(--brand);border-color:rgba(255,107,44,.4);background:rgba(255,107,44,.06)}

  .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:999px;font-weight:600;font-size:14px;line-height:1;white-space:nowrap;transition:transform .24s var(--ease),filter .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease),color .24s var(--ease),background .24s var(--ease)}
  .btn-sm{padding:12px 20px;min-height:44px}
  .btn-lg{padding:16px 30px;font-size:15px;min-height:52px}
  .btn-primary{background:var(--brand);color:var(--brand-ink)}
  .btn-primary:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 8px 24px rgba(255,107,44,.28)}
  .btn-primary:active{transform:translateY(1px)}
  .btn-ghost{border:1px solid var(--line-strong);color:var(--text-2);background:transparent}
  .btn-ghost:hover{color:var(--text);border-color:rgba(255,107,44,.4)}
  .btn-dark{background:var(--brand-ink);color:var(--paper)}
  .btn-dark:hover{transform:translateY(-2px);box-shadow:0 10px 26px rgba(0,0,0,.28)}
  .btn .arw{transition:transform .24s var(--ease)}
  .btn:hover .arw{transform:translateX(4px)}

  .pill-row{display:flex;align-items:center;gap:8px;padding-bottom:12px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none}
  .pill-row::-webkit-scrollbar{display:none}
  .p-chip{flex-shrink:0;font-size:13px;padding:8px 15px;border-radius:999px;border:1px solid var(--line);color:var(--text-2);white-space:nowrap;transition:color .24s var(--ease),border-color .24s var(--ease),background .24s var(--ease)}
  .p-chip:hover{color:var(--brand);border-color:rgba(255,107,44,.4)}
  .p-chip.active{background:var(--brand);border-color:var(--brand);color:var(--brand-ink);font-weight:600}

  .desktop-only{display:none}
  @media (min-width:1024px){
    .desktop-only{display:flex}
    .mobile-only{display:none !important}
  }
  @media (max-width:1023px){
    .nav-row .search-wrap.desktop-only{display:none}
  }

  /* ---------- search layer / drawer ---------- */
  .search-layer{position:fixed;inset:0 0 auto 0;z-index:60;background:rgba(10,11,14,.97);backdrop-filter:blur(12px);border-bottom:1px solid var(--line);padding:16px 0 22px}
  .search-layer .search-wrap{max-width:none;margin-bottom:16px}
  .hot-words{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:13px;color:var(--text-3)}
  .hot-words a{padding:8px 14px;border-radius:999px;border:1px solid var(--line);color:var(--text-2);transition:color .24s var(--ease),border-color .24s var(--ease)}
  .hot-words a:hover{color:var(--brand);border-color:rgba(255,107,44,.4)}
  .layer-close{margin-top:16px;font-size:13px;color:var(--text-3);border-bottom:1px solid var(--line);padding-bottom:2px}
  .layer-close:hover{color:var(--brand)}

  .drawer-mask{position:fixed;inset:0;z-index:70;background:rgba(6,7,9,.66);opacity:0;pointer-events:none;transition:opacity .24s var(--ease)}
  .drawer-mask.show{opacity:1;pointer-events:auto}
  .drawer{position:fixed;top:0;right:0;bottom:0;width:280px;max-width:86vw;z-index:80;background:var(--bg-deep);border-left:1px solid var(--line);transform:translateX(100%);transition:transform .28s var(--ease);padding:20px;display:flex;flex-direction:column;gap:8px;overflow-y:auto}
  .drawer.open{transform:translateX(0)}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line);margin-bottom:12px}
  .drawer-nav a{display:flex;align-items:center;min-height:48px;padding:0 12px;border-radius:var(--r-xs);font-size:15px;color:var(--text-2);transition:color .24s var(--ease),background .24s var(--ease)}
  .drawer-nav a:hover{color:var(--brand);background:rgba(255,107,44,.07)}
  .drawer-nav a.active{color:var(--brand);font-weight:600;background:rgba(255,107,44,.1)}
  .drawer-cta{margin-top:16px;width:100%}
  .drawer-note{margin-top:auto;padding-top:20px;font-size:12px;color:var(--text-3);line-height:1.7}

  /* ---------- page head ---------- */
  .page-head{position:relative;overflow:hidden;border-bottom:1px solid var(--line);padding:36px 0 56px}
  @media (min-width:768px){.page-head{padding:48px 0 72px}}
  .page-head::before{content:"";position:absolute;inset:0;background-image:url("/assets/images/backpic/back-2.png");background-size:cover;background-position:center;opacity:.14;pointer-events:none}
  .page-head::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(14,16,19,.97) 0%,rgba(14,16,19,.86) 45%,rgba(14,16,19,.68) 100%);pointer-events:none}
  .page-head > .shell{position:relative;z-index:1}

  .crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:22px}
  .crumb a{transition:color .24s var(--ease)}
  .crumb a:hover{color:var(--brand)}
  .crumb .sep{color:#4A4E56}

  .head-grid{display:grid;gap:36px;align-items:center}
  @media (min-width:1024px){.head-grid{grid-template-columns:1.15fr .85fr;gap:56px}}

  .page-title{font-size:clamp(30px,5.4vw,52px);line-height:1.12;font-weight:800;letter-spacing:-.02em;color:var(--text)}
  .page-title .hl{border-bottom:3px solid var(--brand);padding-bottom:2px}
  .page-lead{margin-top:20px;max-width:56ch;color:var(--text-2);font-size:16px;line-height:1.85}
  @media (min-width:768px){.page-lead{font-size:16.5px}}
  .head-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
  .head-meta{display:flex;flex-wrap:wrap;gap:10px 28px;margin-top:30px;padding-top:22px;border-top:1px solid var(--line)}
  .head-meta div{display:flex;flex-direction:column;gap:2px}
  .head-meta .num{font-family:var(--font-num);font-size:22px;font-weight:600;color:var(--text)}
  .head-meta .lbl{font-size:12px;color:var(--text-3)}

  .head-media{position:relative;width:100%;max-width:360px;margin:0 auto;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);background:var(--surface-2);box-shadow:var(--shadow-card)}
  .head-media img{width:100%;aspect-ratio:3/4;object-fit:cover}
  .head-media .tag{position:absolute;left:16px;top:16px;font-family:var(--font-num);font-size:12px;padding:6px 12px;border-radius:999px;background:rgba(10,11,14,.74);border:1px solid var(--line-strong);color:var(--text)}
  .head-media .cap{position:absolute;left:0;right:0;bottom:0;padding:40px 18px 16px;background:linear-gradient(180deg,rgba(10,11,14,0),rgba(10,11,14,.88));font-size:13px;color:var(--text-2)}

  /* ---------- compare table (paper) ---------- */
  .paper-block{background:var(--paper);color:#1B1B19;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
  .paper-block .eyebrow{color:#C24E12}
  .paper-block .eyebrow::before{background:#C24E12}
  .paper-block .sec-title{color:#161613}
  .paper-block .sec-sub{color:#5C5A54}

  .table-card{background:#FFFFFF;border:1px solid rgba(0,0,0,.1);border-radius:var(--r-lg);overflow:hidden;box-shadow:0 18px 44px rgba(20,18,14,.1)}
  .table-scroll{overflow-x:auto}
  .cmp-table{width:100%;min-width:760px;border-collapse:collapse}
  .cmp-table thead th{text-align:left;font-size:12.5px;font-weight:600;letter-spacing:.04em;color:#6E6B64;background:#F2EFE9;padding:14px 20px;white-space:nowrap}
  .cmp-table tbody td{padding:18px 20px;font-size:15px;color:#43413C;border-top:1px solid rgba(0,0,0,.08);vertical-align:middle}
  .cmp-table tbody tr:hover{background:#FBF8F3}
  .cmp-table tbody td:first-child{font-weight:700;color:#161613}
  .cmp-table .cell-arrow{text-align:right;white-space:nowrap}
  .cmp-table .cell-arrow a{display:inline-flex;align-items:center;gap:6px;font-size:13.5px;font-weight:600;color:#C24E12;min-height:44px;transition:gap .24s var(--ease)}
  .cmp-table .cell-arrow a:hover{gap:10px}
  .badge{display:inline-block;font-size:12px;padding:4px 10px;border-radius:999px;border:1px solid rgba(0,0,0,.14);color:#5C5A54;background:#F7F5F1}

  .dim-grid{display:grid;gap:16px;margin-top:24px}
  @media (min-width:768px){.dim-grid{grid-template-columns:repeat(3,1fr);gap:20px}}
  .dim-card{background:#FFFFFF;border:1px solid rgba(0,0,0,.1);border-radius:var(--r-md);padding:22px;box-shadow:0 10px 26px rgba(20,18,14,.07);transition:transform .24s var(--ease),box-shadow .24s var(--ease)}
  .dim-card:hover{transform:translateY(-4px);box-shadow:0 18px 36px rgba(20,18,14,.12)}
  .dim-icon{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;background:rgba(194,78,18,.12);color:#C24E12;margin-bottom:14px}
  .dim-card h3{font-size:16px;font-weight:700;color:#161613;margin-bottom:6px}
  .dim-card p{font-size:14px;line-height:1.8;color:#5C5A54}

  /* ---------- fold list ---------- */
  .fold-grid{display:grid;gap:0}
  @media (min-width:1024px){
    .fold-grid{grid-template-columns:1fr 1fr;column-gap:56px}
    .fold-col-b{padding-top:44px}
  }
  .fold-item{display:flex;gap:18px;padding:22px 0;border-bottom:1px solid var(--line)}
  .fold-num{font-family:var(--font-num);font-size:20px;font-weight:600;color:var(--brand);line-height:1.4;flex-shrink:0}
  .fold-item h3{font-size:16.5px;font-weight:600;color:var(--text);margin-bottom:6px}
  .fold-item p{font-size:14.5px;line-height:1.8;color:var(--text-2)}

  /* ---------- quote ---------- */
  .quote-box{margin-top:8px;border-left:3px solid var(--accent);background:var(--surface);border-radius:0 var(--r-md) var(--r-md) 0;padding:22px 26px}
  .quote-box .q-label{font-size:12px;letter-spacing:.16em;color:var(--accent);margin-bottom:10px;font-weight:600}
  .quote-box p{font-size:15.5px;line-height:1.85;color:var(--text-2)}

  /* ---------- faq ---------- */
  .faq-list{display:grid;gap:12px}
  @media (min-width:1024px){.faq-list{grid-template-columns:1fr 1fr;gap:16px 24px}}
  .faq-item{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);padding:0 22px;transition:border-color .24s var(--ease),background .24s var(--ease)}
  .faq-item:hover{border-color:rgba(255,107,44,.28)}
  .faq-item[open]{border-color:rgba(255,107,44,.35);background:var(--surface-2)}
  .faq-item summary{display:flex;align-items:center;gap:14px;padding:20px 0;cursor:pointer;list-style:none;min-height:44px}
  .faq-item summary::-webkit-details-marker{display:none}
  .faq-num{font-family:var(--font-num);font-size:13px;color:var(--text-3);flex-shrink:0}
  .faq-q{font-size:15.5px;font-weight:600;color:var(--text-2);transition:color .24s var(--ease);flex:1}
  .faq-item[open] .faq-q{color:var(--text)}
  .faq-icon{position:relative;width:16px;height:16px;flex-shrink:0;transition:transform .32s var(--ease)}
  .faq-icon::before,.faq-icon::after{content:"";position:absolute;left:50%;top:50%;background:var(--brand);border-radius:2px;transform:translate(-50%,-50%)}
  .faq-icon::before{width:14px;height:2px}
  .faq-icon::after{width:2px;height:14px}
  .faq-item[open] .faq-icon{transform:rotate(45deg)}
  .faq-a{padding:0 0 20px 30px;color:var(--text-2);font-size:14.5px;line-height:1.85}

  /* ---------- cta band ---------- */
  .cta-band{position:relative;overflow:hidden;background:var(--brand);color:var(--brand-ink);border-radius:var(--r-lg);padding:40px 26px;display:grid;gap:28px}
  @media (min-width:768px){.cta-band{padding:56px 48px;grid-template-columns:1.35fr .65fr;align-items:center;gap:40px}}
  .cta-band::after{content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;background:rgba(255,255,255,.16);pointer-events:none}
  .cta-band h2{position:relative;z-index:1;font-size:clamp(26px,3.6vw,38px);line-height:1.2;font-weight:800;letter-spacing:-.01em;color:var(--brand-ink)}
  .cta-band p{position:relative;z-index:1;margin-top:14px;font-size:15.5px;line-height:1.8;color:rgba(18,20,15,.78);max-width:52ch}
  .cta-steps{position:relative;z-index:1;display:flex;flex-wrap:wrap;gap:10px 26px;margin-top:24px;padding-top:20px;border-top:1px solid rgba(18,20,15,.2)}
  .cta-steps span{font-size:13.5px;color:rgba(18,20,15,.8)}
  .cta-steps b{font-family:var(--font-num);font-weight:700;color:var(--brand-ink);margin-right:6px}
  .cta-actions{position:relative;z-index:1;display:flex;flex-direction:column;gap:14px}
  @media (max-width:767px){.cta-actions .btn{width:100%}}
  .cta-note{font-size:13px;color:rgba(18,20,15,.72);text-align:center}

  /* ---------- back row ---------- */
  .back-row{display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between;padding:26px 0 56px}
  @media (min-width:768px){.back-row{padding:30px 0 72px}}
  .back-row p{font-size:14px;color:var(--text-3)}
  .back-links{display:flex;flex-wrap:wrap;gap:12px}

  /* ---------- footer ---------- */
  .site-footer{background:var(--bg-deep);border-top:1px solid var(--line);padding:56px 0 26px}
  .foot-grid{display:grid;gap:34px;grid-template-columns:1fr}
  @media (min-width:640px){.foot-grid{grid-template-columns:1fr 1fr}}
  @media (min-width:1024px){.foot-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}}
  .foot-title{font-size:13px;letter-spacing:.12em;color:var(--text-3);margin-bottom:14px}
  .foot-link{display:block;font-size:14px;color:var(--text-2);padding:7px 0;transition:color .24s var(--ease)}
  .foot-link:hover{color:var(--brand)}
  .foot-bottom{margin-top:44px;padding-top:22px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:10px 28px;justify-content:space-between;font-size:13px;color:var(--text-3)}
  .mini-search{display:flex;align-items:center;gap:8px;background:var(--surface-2);border:1px solid var(--line);border-radius:999px;padding:4px 4px 4px 16px;max-width:320px;margin-top:18px;transition:border-color .24s var(--ease)}
  .mini-search:focus-within{border-color:var(--brand)}
  .mini-search input{flex:1;min-width:0;height:36px;background:transparent;border:0;outline:0;font-size:14px;color:var(--text)}
  .mini-search input::placeholder{color:var(--text-3)}
  .mini-search button{width:32px;height:32px;flex-shrink:0;border-radius:999px;background:var(--brand);color:var(--brand-ink);display:grid;place-items:center;transition:filter .24s var(--ease)}
  .mini-search button:hover{filter:brightness(1.08)}
  .lead{color:var(--text-2);line-height:1.8}

  /* ---------- reveal ---------- */
  .js-on .reveal{opacity:0;transform:translateY(16px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
  .js-on .reveal.in{opacity:1;transform:none}

  @media (prefers-reduced-motion: reduce){
    *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
    .js-on .reveal{opacity:1;transform:none}
  }

/* roulang page: category1 */
:root{
  --bg:#0E1013;
  --bg-deep:#0A0B0E;
  --surface:#16191F;
  --surface-2:#1D2129;
  --line:rgba(255,255,255,.09);
  --line-strong:rgba(255,255,255,.18);
  --text:#F2F0EB;
  --text-2:#A8A6A0;
  --text-3:#6E6C67;
  --brand:#FF6B2C;
  --brand-ink:#12140F;
  --accent:#2ED3C6;
  --sand:#E8C36A;
  --paper:#F6F4F0;
  --r-xs:6px;
  --r-md:14px;
  --r-lg:24px;
  --shadow-card:0 20px 60px rgba(0,0,0,.45);
  --shadow-card-hover:0 24px 70px rgba(0,0,0,.6);
  --ease:cubic-bezier(.2,.7,.2,1);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:ui-monospace,"SF Mono","JetBrains Mono",Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
::selection{background:var(--brand);color:var(--brand-ink)}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
.shell{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
@media(min-width:768px){.shell{padding-left:32px;padding-right:32px}}
@media(min-width:1024px){.shell{padding-left:40px;padding-right:40px}}
@media(min-width:1536px){.shell{max-width:1320px}}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(14,16,19,.92);
  border-bottom:1px solid var(--line);
  transition:background .24s var(--ease),border-color .24s var(--ease);
}
.site-header.shrink{background:rgba(14,16,19,.86);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
.nav-row{
  display:flex;align-items:center;gap:16px;
  min-height:72px;padding-top:10px;padding-bottom:10px;
  transition:min-height .24s var(--ease);
}
.site-header.shrink .nav-row{min-height:60px}
.brand{display:flex;flex-direction:column;gap:2px;flex:0 0 auto;min-height:44px;justify-content:center}
.brand-main{font-size:16px;font-weight:700;line-height:1.25;color:var(--text);letter-spacing:-.01em}
.brand-sub{font-size:10px;color:var(--text-3);letter-spacing:.16em;line-height:1.2}
.search-wrap{
  display:flex;align-items:center;gap:8px;
  flex:1 1 auto;max-width:560px;height:48px;
  margin:0 auto;padding:0 6px 0 16px;
  background:var(--surface-2);
  border:1px solid var(--line);
  border-radius:999px;
  color:var(--text-3);
  transition:border-color .24s var(--ease),background .24s var(--ease);
}
.search-wrap:focus-within{border-color:var(--brand);background:#232732}
.search-wrap input{flex:1 1 auto;min-width:0;border:0;background:transparent;outline:none;font-size:14px;color:var(--text)}
.search-wrap input::placeholder{color:var(--text-3)}
.search-submit{
  flex:0 0 auto;display:inline-flex;align-items:center;justify-content:center;
  width:36px;height:36px;border-radius:999px;
  background:var(--brand);color:var(--brand-ink);
  transition:transform .24s var(--ease),filter .24s var(--ease);
}
.search-submit:hover{filter:brightness(1.06);transform:translateX(2px)}
.search-submit:active{transform:translateY(1px)}
.nav-actions{display:flex;align-items:center;gap:8px;margin-left:auto;flex:0 0 auto}
.icon-btn{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);color:var(--text-2);
  transition:color .24s var(--ease),border-color .24s var(--ease),background .24s var(--ease);
}
.icon-btn:hover{color:var(--brand);border-color:rgba(255,107,44,.35);background:var(--surface-2)}
.mobile-only{display:none}
@media(max-width:1023px){
  .desktop-only{display:none !important}
  .mobile-only{display:inline-flex !important}
}
.pill-row{
  display:flex;align-items:center;gap:8px;
  padding:0 0 12px;
  overflow-x:auto;overflow-y:hidden;
  scrollbar-width:none;
}
.pill-row::-webkit-scrollbar{display:none}
.p-chip{
  flex:0 0 auto;display:inline-flex;align-items:center;
  min-height:34px;padding:0 14px;
  border:1px solid var(--line);border-radius:999px;
  font-size:13px;color:var(--text-2);white-space:nowrap;
  transition:color .24s var(--ease),border-color .24s var(--ease),background .24s var(--ease);
}
.p-chip:hover{color:var(--brand);border-color:rgba(255,107,44,.35)}
.p-chip.active{background:var(--brand);border-color:var(--brand);color:var(--brand-ink);font-weight:600}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:999px;
  font-size:14px;font-weight:600;line-height:1;
  transition:transform .24s var(--ease),filter .24s var(--ease),box-shadow .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease),background .24s var(--ease);
}
.btn .arw{transition:transform .24s var(--ease)}
.btn:hover .arw{transform:translateX(4px)}
.btn-primary{background:var(--brand);color:var(--brand-ink)}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 8px 24px rgba(255,107,44,.28)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{border:1px solid var(--line-strong);color:var(--text-2)}
.btn-ghost:hover{color:var(--brand);border-color:rgba(255,107,44,.35);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-ink{background:var(--brand-ink);color:var(--paper)}
.btn-ink:hover{transform:translateY(-2px);filter:brightness(1.15)}
.btn-sm{min-height:38px;padding:0 16px;font-size:13px}
.btn-lg{min-height:54px;padding:0 30px;font-size:15px}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;color:var(--accent);font-weight:600;
  transition:color .24s var(--ease),gap .24s var(--ease);
}
.text-link:hover{color:var(--brand)}
.text-link:hover .arw{transform:translateX(4px)}
.text-link .arw{transition:transform .24s var(--ease)}

/* ---------- 通用板块 ---------- */
.section{padding:64px 0}
@media(min-width:768px){.section{padding:96px 0}}
@media(min-width:1024px){.section{padding:112px 0}}
.section-line{border-top:1px solid var(--line)}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12px;font-weight:600;letter-spacing:.18em;
  color:var(--brand);margin-bottom:14px;text-transform:uppercase;
}
.eyebrow::before{content:"";display:block;width:16px;height:1px;background:var(--brand)}
.h2{font-size:clamp(24px,3.4vw,38px);line-height:1.2;font-weight:700;letter-spacing:-.01em}
.h3{font-size:20px;line-height:1.35;font-weight:600}
.lead{color:var(--text-2);font-size:16px;line-height:1.8}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:36px}
@media(max-width:639px){.sec-head{margin-bottom:24px}}

/* ---------- 分类页头图 ---------- */
.cat-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.cat-hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  opacity:.16;
}
.cat-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(60% 60% at 18% 0%,rgba(255,107,44,.12),transparent 70%);
}
.cat-hero .shell{position:relative;z-index:2;padding-top:28px;padding-bottom:56px}
@media(min-width:768px){.cat-hero .shell{padding-top:36px;padding-bottom:80px}}
@media(min-width:1024px){.cat-hero .shell{padding-bottom:96px}}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:28px;flex-wrap:wrap}
.breadcrumb a{color:var(--text-2);transition:color .24s var(--ease)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb span[aria-current]{color:var(--text-3)}
.cat-hero h1{
  font-size:clamp(32px,6vw,62px);line-height:1.08;font-weight:800;letter-spacing:-.02em;
  max-width:16em;margin-bottom:20px;
}
.cat-hero h1 .mark{color:var(--brand);box-shadow:inset 0 -6px 0 rgba(255,107,44,.22)}
.cat-hero .lead{max-width:60ch;font-size:17px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.stat-row{display:flex;flex-wrap:wrap;gap:28px;margin-top:44px;padding-top:28px;border-top:1px solid var(--line)}
.stat{min-width:120px}
.stat b{display:block;font-family:var(--font-num);font-size:clamp(28px,4vw,40px);line-height:1.1;color:var(--brand);font-weight:700}
.stat span{display:block;font-size:13px;color:var(--text-3);margin-top:6px}

/* ---------- 分类矩阵 ---------- */
.matrix{display:grid;grid-template-columns:1fr;gap:20px}
@media(min-width:640px){.matrix{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.matrix{grid-template-columns:repeat(3,1fr);gap:24px}}
.mx-card{
  display:flex;flex-direction:column;gap:14px;
  padding:28px 24px;min-height:200px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  transition:transform .24s var(--ease),border-color .24s var(--ease),background .24s var(--ease),box-shadow .24s var(--ease);
}
.mx-card:hover{transform:translateY(-4px);border-color:rgba(255,107,44,.35);background:var(--surface-2);box-shadow:var(--shadow-card-hover)}
.mx-ico{
  display:inline-flex;align-items:center;justify-content:center;
  width:46px;height:46px;border-radius:12px;
  background:rgba(255,107,44,.12);color:var(--brand);
}
.mx-card h3{font-size:19px;font-weight:600;line-height:1.35}
.mx-card p{font-size:14px;color:var(--text-2);line-height:1.75}
.mx-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--text-3)}
.mx-card:hover .mx-foot{color:var(--brand)}

/* ---------- 行式清单 ---------- */
.rowlist{border-top:1px solid var(--line)}
.row-item{
  display:grid;grid-template-columns:1fr;gap:6px;
  padding:22px 0;border-bottom:1px solid var(--line);
  transition:padding-left .24s var(--ease),border-color .24s var(--ease);
}
@media(min-width:768px){
  .row-item{grid-template-columns:minmax(180px,260px) 1fr;gap:32px;align-items:baseline}
}
.row-item:hover{padding-left:8px;border-color:var(--line-strong)}
.row-item dt,.row-item .row-t{font-size:16px;font-weight:600;color:var(--text)}
.row-item dd,.row-item .row-d{margin:0;font-size:15px;color:var(--text-2);line-height:1.8}

/* ---------- 步骤 ---------- */
.steps{display:grid;grid-template-columns:1fr;gap:24px}
@media(min-width:640px){.steps{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.steps{grid-template-columns:repeat(4,1fr)}}
.step{
  position:relative;padding:26px 22px 26px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  transition:transform .24s var(--ease),border-color .24s var(--ease);
}
.step:hover{transform:translateY(-4px);border-color:rgba(255,107,44,.35)}
.step-num{font-family:var(--font-num);font-size:13px;color:var(--brand);letter-spacing:.08em}
.step h3{margin:12px 0 10px;font-size:18px;font-weight:600}
.step p{font-size:14px;color:var(--text-2);line-height:1.75}

/* ---------- 核对要点图文块 ---------- */
.check-block{display:grid;grid-template-columns:1fr;gap:28px;align-items:center}
@media(min-width:1024px){.check-block{grid-template-columns:1fr 1fr;gap:56px}}
.media-frame{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  border:1px solid var(--line);background:var(--surface-2);
  box-shadow:var(--shadow-card);
}
.media-frame img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .6s var(--ease)}
.media-frame:hover img{transform:scale(1.04)}
.check-list{display:grid;gap:16px;margin-top:26px}
.check-item{display:flex;gap:14px;align-items:flex-start;padding-bottom:16px;border-bottom:1px solid var(--line)}
.check-item:last-child{border-bottom:0;padding-bottom:0}
.check-dot{
  flex:0 0 auto;width:22px;height:22px;border-radius:6px;margin-top:4px;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(46,211,198,.14);color:var(--accent);
}
.check-item b{display:block;font-size:15px;font-weight:600;margin-bottom:4px}
.check-item p{font-size:14px;color:var(--text-2);line-height:1.75}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:1fr;gap:16px}
@media(min-width:1024px){.faq-grid{grid-template-columns:repeat(2,1fr);gap:20px 24px}}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  transition:border-color .24s var(--ease),background .24s var(--ease);
}
.faq-item.open{border-color:rgba(255,107,44,.35);background:var(--surface-2)}
.faq-q{
  width:100%;display:flex;align-items:center;gap:16px;
  padding:20px 22px;text-align:left;
}
.faq-num{font-family:var(--font-num);font-size:13px;color:var(--text-3);flex:0 0 auto}
.faq-t{flex:1 1 auto;font-size:16px;font-weight:600;color:var(--text-2);transition:color .24s var(--ease)}
.faq-item.open .faq-t{color:var(--text)}
.faq-icon{
  position:relative;flex:0 0 auto;width:18px;height:18px;
  transition:transform .32s var(--ease);
}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;left:50%;top:50%;background:var(--brand);transform:translate(-50%,-50%)}
.faq-icon::before{width:14px;height:2px}
.faq-icon::after{width:2px;height:14px}
.faq-item.open .faq-icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s var(--ease)}
.faq-a-inner{padding:0 22px 22px 60px;font-size:15px;color:var(--text-2);line-height:1.8}
@media(max-width:639px){.faq-a-inner{padding-left:22px}}

/* ---------- 米白转化带 ---------- */
.cta-band{background:var(--paper);color:#14161A;padding:64px 0}
@media(min-width:768px){.cta-band{padding:88px 0}}
.cta-band .eyebrow{color:#C1520F}
.cta-band .eyebrow::before{background:#C1520F}
.cta-band h2{font-size:clamp(26px,3.6vw,40px);line-height:1.18;font-weight:800;letter-spacing:-.01em;color:#111318}
.cta-band p{color:#4A4E56;font-size:16px;line-height:1.8}
.cta-grid{display:grid;grid-template-columns:1fr;gap:36px}
@media(min-width:1024px){.cta-grid{grid-template-columns:1.15fr .85fr;gap:56px;align-items:center}}
.cta-steps{display:grid;gap:0;margin-top:28px;border-top:1px solid rgba(0,0,0,.12)}
.cta-step{display:flex;gap:16px;align-items:baseline;padding:16px 0;border-bottom:1px solid rgba(0,0,0,.12)}
.cta-step em{font-family:var(--font-num);font-style:normal;font-size:13px;color:#C1520F;flex:0 0 auto}
.cta-step span{font-size:15px;color:#2A2E36}
.cta-side{display:flex;flex-direction:column;gap:14px}
@media(max-width:639px){.cta-side .btn{width:100%}}

/* ---------- 反馈表单 ---------- */
.form-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:28px 24px;
}
@media(min-width:768px){.form-card{padding:36px 32px}}
.field{display:grid;gap:8px;margin-bottom:18px}
.field label{font-size:13px;color:var(--text-2);font-weight:600}
.field input,.field textarea{
  width:100%;min-height:48px;padding:12px 16px;
  background:var(--surface-2);border:1px solid var(--line);border-radius:var(--r-xs);
  color:var(--text);font-size:14px;outline:none;
  transition:border-color .24s var(--ease),background .24s var(--ease);
}
.field textarea{min-height:110px;resize:vertical;line-height:1.7}
.field input:focus,.field textarea:focus{border-color:var(--brand);background:#232732}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3)}
.form-note{font-size:13px;color:var(--text-3);margin-top:12px}
.form-msg{font-size:13px;margin-top:12px;color:var(--accent);min-height:20px}
.form-msg.err{color:#FF7A6B}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg-deep);border-top:1px solid var(--line);padding:56px 0 28px}
@media(min-width:768px){.site-footer{padding:72px 0 32px}}
.foot-grid{display:grid;grid-template-columns:1fr;gap:36px}
@media(min-width:640px){.foot-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.foot-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}}
.foot-title{font-size:13px;letter-spacing:.12em;color:var(--text-3);margin-bottom:16px;font-weight:600}
.foot-link{display:block;font-size:14px;color:var(--text-2);padding:7px 0;transition:color .24s var(--ease),transform .24s var(--ease)}
a.foot-link:hover{color:var(--brand);transform:translateX(3px)}
.mini-search{
  display:flex;align-items:center;gap:8px;margin-top:18px;
  height:44px;padding:0 6px 0 14px;max-width:320px;
  background:var(--surface-2);border:1px solid var(--line);border-radius:999px;
  transition:border-color .24s var(--ease);
}
.mini-search:focus-within{border-color:var(--brand)}
.mini-search input{flex:1 1 auto;min-width:0;border:0;background:transparent;outline:none;font-size:13px;color:var(--text)}
.mini-search input::placeholder{color:var(--text-3)}
.mini-search button{
  flex:0 0 auto;display:inline-flex;align-items:center;justify-content:center;
  width:32px;height:32px;border-radius:999px;background:var(--brand);color:var(--brand-ink);
  transition:filter .24s var(--ease);
}
.mini-search button:hover{filter:brightness(1.06)}
.foot-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  font-size:12.5px;color:var(--text-3);line-height:1.7;
}

/* ---------- 移动抽屉与搜索层 ---------- */
.drawer-mask{
  position:fixed;inset:0;z-index:60;background:rgba(6,7,9,.66);
  opacity:0;visibility:hidden;transition:opacity .24s var(--ease),visibility .24s var(--ease);
}
.drawer-mask.open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;z-index:61;width:280px;max-width:86vw;height:100%;
  background:var(--bg-deep);border-left:1px solid var(--line);
  padding:22px 20px 32px;overflow-y:auto;
  transform:translateX(102%);transition:transform .28s var(--ease);
}
.drawer.open{transform:translateX(0)}
.drawer .brand{margin-bottom:22px}
.drawer-link{
  display:flex;align-items:center;min-height:48px;padding:0 12px;
  border-bottom:1px solid var(--line);font-size:15px;color:var(--text-2);
  transition:color .24s var(--ease),background .24s var(--ease);
}
.drawer-link:hover,.drawer-link.active{color:var(--brand);background:var(--surface)}
.drawer-cta{margin-top:22px;display:grid;gap:10px}
.drawer-foot{margin-top:24px;font-size:12px;color:var(--text-3);line-height:1.7}
.search-layer{
  position:fixed;inset:0;z-index:62;background:rgba(10,11,14,.96);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  display:flex;align-items:flex-start;justify-content:center;
  padding:20px;opacity:0;visibility:hidden;
  transition:opacity .24s var(--ease),visibility .24s var(--ease);
}
.search-layer.open{opacity:1;visibility:visible}
.search-layer-inner{width:100%;max-width:560px;margin-top:64px}
.hot-words{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
.hot-word{
  display:inline-flex;align-items:center;min-height:38px;padding:0 14px;
  border:1px solid var(--line);border-radius:999px;font-size:13px;color:var(--text-2);
  transition:color .24s var(--ease),border-color .24s var(--ease);
}
.hot-word:hover{color:var(--brand);border-color:rgba(255,107,44,.35)}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none}
}