/* roulang page: index */
:root{
  --ink:#16181D;
  --ink-soft:#22252C;
  --accent:#C2551F;
  --accent-soft:rgba(194,85,31,.10);
  --green:#2E6F63;
  --bg:#F6F4F0;
  --surface:#FFFFFF;
  --line:#E3DFD8;
  --text:#1B1D21;
  --text-2:#5A5F66;
  --text-3:#8A8F96;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(22,24,29,.04), 0 12px 32px rgba(22,24,29,.06);
  --shadow-2:0 2px 6px rgba(22,24,29,.06), 0 18px 44px rgba(22,24,29,.10);
  --ease:cubic-bezier(.22,.61,.36,1);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,"Times New Roman",serif;
  --sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:var(--sans);font-size:16.5px;line-height:1.8;
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color .24s var(--ease),border-color .24s var(--ease),background-color .24s var(--ease)}
a:hover{color:var(--accent)}
h1,h2,h3,h4{font-family:var(--serif);color:var(--ink);margin:0;font-weight:700;letter-spacing:-.01em}
h1{font-size:clamp(30px,5vw,56px);line-height:1.15;font-weight:700;letter-spacing:-.02em}
h2{font-size:clamp(24px,3.4vw,38px);line-height:1.25}

h3{font-size:21px;line-height:1.4}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;font-size:inherit}
input,select{font-family:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
@media (min-width:1400px){.container{max-width:1320px}}
@media (max-width:576px){.container{padding:0 16px}}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(246,244,240,.88);
  -webkit-backdrop-filter:saturate(180%) blur(14px);
  backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid transparent;
  transition:background .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(246,244,240,.96);
  border-bottom-color:var(--line);
  box-shadow:0 6px 24px rgba(22,24,29,.05);
}
.brand-bar__inner{display:flex;align-items:center;gap:20px;height:72px;transition:height .3s var(--ease)}
.site-header.is-scrolled .brand-bar__inner{height:58px}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand__mark{
  display:grid;place-items:center;width:34px;height:34px;border-radius:9px;
  background:var(--ink);color:#fff;font-weight:800;font-size:13.5px;letter-spacing:.03em;
  transition:width .3s var(--ease),height .3s var(--ease),background .24s var(--ease);
}
.brand:hover .brand__mark{background:var(--accent)}
.site-header.is-scrolled .brand__mark{width:30px;height:30px}
.brand__text{font-family:var(--serif);font-size:19px;font-weight:700;color:var(--ink);letter-spacing:-.01em;white-space:nowrap}
.brand__text em{font-style:normal;color:var(--accent);margin-left:1px;font-family:var(--sans);font-size:16px;font-weight:800;letter-spacing:.02em}
.brand-bar__actions{margin-left:auto;display:flex;align-items:center;gap:10px}
.search-wrap{position:relative;display:flex;align-items:center}
.search-toggle{
  width:38px;height:38px;border-radius:50%;border:1px solid var(--line);background:var(--surface);
  color:var(--text-2);display:grid;place-items:center;cursor:pointer;flex-shrink:0;
  transition:color .24s var(--ease),border-color .24s var(--ease),background .24s var(--ease);
}
.search-toggle:hover{color:var(--accent);border-color:var(--accent)}
.search-field{
  width:0;opacity:0;padding:0;height:38px;border:1px solid var(--line);border-radius:var(--radius-pill);
  background:var(--surface);color:var(--text);font-size:14.5px;
  transition:width .3s var(--ease),opacity .3s var(--ease),padding .3s var(--ease),margin .3s var(--ease),border-color .24s var(--ease);
}
.search-wrap.is-open .search-field{width:258px;opacity:1;padding:0 16px;margin-left:10px;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.channel-bar{border-top:1px solid var(--line);display:flex;align-items:center;height:46px;transition:height .3s var(--ease)}
.site-header.is-scrolled .channel-bar{height:42px}
.channel-bar__inner{display:flex;align-items:center;gap:16px;width:100%}
.channel-nav{display:flex;gap:2px;flex:1;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none}
.channel-nav::-webkit-scrollbar{display:none}
.channel-nav a{
  position:relative;display:inline-block;padding:8px 14px;font-size:14.5px;color:var(--text-2);
  border-radius:var(--radius-pill);white-space:nowrap;
  transition:color .24s var(--ease),background .24s var(--ease);
}
.channel-nav a:hover{color:var(--ink);background:rgba(22,24,29,.045)}
.channel-nav a.is-active{color:var(--ink);font-weight:600}
.channel-nav a.is-active::after{content:"";position:absolute;left:14px;right:14px;bottom:1px;height:2px;background:var(--accent);border-radius:2px}
.hot-tags{display:flex;gap:8px;overflow-x:auto;flex-shrink:0;max-width:390px;scrollbar-width:none}
.hot-tags::-webkit-scrollbar{display:none}
.hot-tags a{font-size:13px;color:var(--text-3);border:1px solid var(--line);border-radius:var(--radius-pill);padding:4px 12px;white-space:nowrap;background:transparent}
.hot-tags a:hover{color:var(--accent);border-color:var(--accent)}

/* ---------- 按钮 ---------- */
.btn-ink,.btn-line,.btn-text{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;border-radius:var(--radius-btn);cursor:pointer;
  padding:0 24px;height:48px;border:1.5px solid transparent;
  transition:background .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease),transform .24s var(--ease),box-shadow .24s var(--ease);
}
.btn-ink{background:var(--ink);color:#fff}
.btn-ink:hover{background:var(--accent);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-1)}
.btn-line{border-color:var(--ink);color:var(--ink);background:transparent}
.btn-line:hover{background:var(--ink);color:#fff;transform:translateY(-1px)}
.btn-text{padding:0;height:auto;color:var(--ink);font-weight:600}
.btn-text i{transition:transform .24s var(--ease)}
.btn-text:hover{color:var(--accent)}
.btn-text:hover i{transform:translateX(4px)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}

/* ---------- 通用板块与标签 ---------- */
.section{padding:96px 0}
.section--tight{padding:72px 0}
.section--mini{padding:56px 0}
.section-head{margin-bottom:40px}
.section-head__label{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.08em;
  color:var(--accent);text-transform:uppercase;margin-bottom:14px;
}
.section-head__label::before{content:"";width:18px;height:3px;background:var(--accent);border-radius:2px}
.section-head h2{max-width:22ch}
.section-head p{margin-top:14px;color:var(--text-2);max-width:62ch;font-size:16px}
.section-head--row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}
.badge-outline{
  display:inline-flex;align-items:center;gap:8px;height:32px;padding:0 14px;border-radius:var(--radius-pill);
  border:1px solid var(--accent);color:var(--accent);font-size:13.5px;font-weight:600;background:transparent;
}
.tag-pill{
  display:inline-block;font-size:13px;color:var(--text-2);border:1px solid var(--line);
  border-radius:var(--radius-pill);padding:5px 14px;background:var(--surface);
  transition:color .24s var(--ease),border-color .24s var(--ease);
}
.tag-pill:hover{color:var(--accent);border-color:var(--accent)}
.eyebrow-divider{height:1px;background:var(--line);border:0;margin:0}

/* ---------- Hero ---------- */
.hero{padding:76px 0 68px;position:relative;overflow:hidden}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(760px 340px at 88% 6%, rgba(194,85,31,.07), transparent 62%),
    radial-gradient(600px 300px at 4% 92%, rgba(46,111,99,.05), transparent 60%);
}
.hero__inner{position:relative}
.hero__grid{display:grid;grid-template-columns:6fr 5fr;column-gap:5%;align-items:center}
.hero__title{margin:18px 0 20px;max-width:16ch}
.hero__lead{font-size:17.5px;color:var(--text-2);max-width:48ch;margin-bottom:30px}
.hero__actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:30px}
.hero__tags{display:flex;gap:10px;flex-wrap:wrap}
.hero__figure{position:relative}
.hero__figure img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:16px;
  border:1px solid rgba(255,255,255,.75);box-shadow:var(--shadow-2);
  background:#EDE9E3;transition:transform .42s var(--ease);
}
.hero__figure:hover img{transform:scale(1.03)}
.hero__seal{
  position:absolute;left:-14px;bottom:22px;width:64px;height:64px;border-radius:12px;
  background:var(--accent);color:#fff;display:grid;place-items:center;
  font-family:var(--serif);font-size:18px;font-weight:700;line-height:1.1;text-align:center;
  box-shadow:var(--shadow-1);
}

/* ---------- 信任数据条 ---------- */
.trust{padding:34px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.trust__grid{display:grid;grid-template-columns:repeat(4,1fr)}
.trust__item{padding:0 28px;border-left:1px solid var(--line)}
.trust__item:first-child{border-left:0;padding-left:0}
.trust__num{
  font-family:var(--serif);font-size:34px;font-weight:700;color:var(--ink);
  font-variant-numeric:tabular-nums;letter-spacing:-.02em;line-height:1.2;
}
.trust__num em{font-style:normal;color:var(--accent);font-size:22px;margin-left:2px}
.trust__label{font-size:13.5px;color:var(--text-3);margin-top:2px}

/* ---------- 功能分组 ---------- */
.capability__grid{display:grid;grid-template-columns:1.05fr 1fr;gap:56px;align-items:start}
.cap-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:0;overflow:hidden;box-shadow:var(--shadow-1);
}
.cap-card__img{width:100%;aspect-ratio:16/9;object-fit:cover;background:#EDE9E3}
.cap-card__body{padding:26px 28px 30px}
.cap-card__body h3{margin-bottom:12px}
.cap-card__body p{color:var(--text-2);font-size:15.5px;margin-bottom:18px}
.cap-list__item{
  display:flex;gap:18px;padding:22px 4px;border-bottom:1px solid var(--line);
  transition:transform .26s var(--ease);
}
.cap-list__item:first-child{border-top:1px solid var(--line)}
.cap-list__item:hover{transform:translateX(2px)}
.cap-list__num{
  font-family:var(--serif);font-size:15px;font-weight:700;color:var(--text-3);
  flex-shrink:0;padding-top:2px;transition:color .26s var(--ease);
}
.cap-list__item:hover .cap-list__num{color:var(--accent)}
.cap-list__item h3{font-size:19px;margin-bottom:6px}
.cap-list__item p{color:var(--text-2);font-size:15px;margin:0}

/* ---------- 使用场景 ---------- */
.scene{padding:96px 0;background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.scene__row{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;padding:38px 0}
.scene__row + .scene__row{border-top:1px dashed var(--line)}
.scene__row--flip .scene__media{order:-1}
.scene__media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius-card);background:#EDE9E3;transition:transform .42s var(--ease)}
.scene__media:hover img{transform:scale(1.03)}
.scene__body h3{margin-bottom:12px}
.scene__body p{color:var(--text-2);font-size:15.5px;margin-bottom:10px}
.scene__index{font-family:var(--serif);font-size:14px;color:var(--accent);font-weight:700;letter-spacing:.1em;margin-bottom:10px}

/* ---------- 案例 ---------- */
.case__grid{display:grid;grid-template-columns:repeat(2,1fr);gap:32px}
.case-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease);
}
.case-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.case-card:nth-child(2){margin-top:44px}
.case-card img{width:100%;aspect-ratio:4/3;object-fit:cover;background:#EDE9E3}
.case-card__body{padding:24px 26px 28px}
.case-card__body h3{font-size:20px;margin-bottom:10px}
.case-card__body p{color:var(--text-2);font-size:15px;margin-bottom:18px}
.case-card__metrics{display:flex;gap:34px;padding-top:16px;border-top:1px solid var(--line)}
.case-card__metrics b{
  display:block;font-family:var(--serif);font-size:26px;color:var(--ink);
  font-variant-numeric:tabular-nums;letter-spacing:-.02em;line-height:1.3;
}
.case-card__metrics span{font-size:13px;color:var(--text-3)}

/* ---------- 价格方案 ---------- */
.plan{border-top:1px solid var(--line)}
.plan-scroll{overflow-x:auto;padding-bottom:6px}
.plan-hint{display:none;font-size:13px;color:var(--text-3);margin-bottom:12px}
.plan-table{
  display:grid;grid-template-columns:1.35fr repeat(3,1fr);min-width:940px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;
}
.pt-cell{padding:16px 20px;border-bottom:1px solid var(--line);font-size:15px;color:var(--text-2)}
.pt-row-end .pt-cell{border-bottom:0}
.pt-name{color:var(--ink);font-weight:600;background:#FCFBF9}
.pt-head{padding:22px 20px}
.pt-head .pt-plan{font-family:var(--serif);font-size:20px;font-weight:700;color:var(--ink);line-height:1.3}
.pt-head .pt-desc{font-size:13.5px;color:var(--text-3);margin-top:6px}
.pt-rec{background:rgba(194,85,31,.045)}
.pt-head.pt-rec{background:rgba(194,85,31,.09);box-shadow:inset 0 3px 0 var(--accent);color:var(--accent)}
.pt-head.pt-rec .pt-plan{color:var(--accent)}
.pt-badge{
  display:inline-block;font-size:12px;font-weight:700;color:#fff;background:var(--accent);
  border-radius:var(--radius-pill);padding:2px 10px;margin-left:8px;vertical-align:middle;
}
.pt-cta{padding:20px;border-bottom:0;background:#FCFBF9}
.pt-rec.pt-cta{background:rgba(194,85,31,.045)}

/* ---------- 最新信息 ---------- */
.news{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.news-list{display:flex;flex-direction:column}
.news-row{
  display:flex;align-items:center;gap:20px;padding:20px 6px;border-bottom:1px solid var(--line);
  transition:background .24s var(--ease),box-shadow .24s var(--ease);
}
.news-row:hover{background:rgba(246,244,240,.75);box-shadow:inset 0 -1px 0 var(--accent)}
.news-row__thumb{width:96px;flex:0 0 96px;overflow:hidden;border-radius:10px;background:#EDE9E3}
.news-row__thumb img{width:100%;aspect-ratio:1/1;object-fit:cover;transition:transform .34s var(--ease)}
.news-row:hover .news-row__thumb img{transform:scale(1.03)}
.news-row__body{flex:1;min-width:0}
.news-row__cat{
  display:inline-block;font-size:12.5px;color:var(--text-2);border:1px solid var(--line);
  border-radius:var(--radius-pill);padding:2px 10px;margin-bottom:8px;
}
.news-row__title{
  display:block;font-family:var(--serif);font-size:18px;font-weight:700;color:var(--ink);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-bottom:6px;
  transition:color .24s var(--ease);
}
.news-row:hover .news-row__title{color:var(--accent)}
.news-row__sum{
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  font-size:14.5px;color:var(--text-2);line-height:1.7;
}
.news-row__time{font-size:14px;color:var(--text-3);flex-shrink:0;font-variant-numeric:tabular-nums}
.news-row__arrow{color:var(--text-3);flex-shrink:0;transition:transform .24s var(--ease),color .24s var(--ease)}
.news-row:hover .news-row__arrow{color:var(--accent);transform:translateX(4px)}
.news-row--lead{
  background:linear-gradient(180deg,rgba(246,244,240,.6),transparent);
  padding:26px 6px;
}
.news-row--lead .news-row__thumb{width:220px;flex-basis:220px}
.news-row--lead .news-row__thumb img{aspect-ratio:16/9}
.news-row--lead .news-row__title{font-size:23px;white-space:normal}
.news-row--lead .news-row__sum{-webkit-line-clamp:2;font-size:15px}
.news-empty{
  text-align:center;padding:56px 24px;border:1px dashed var(--line);border-radius:var(--radius-card);
  background:rgba(246,244,240,.5);
}
.news-empty i{font-size:26px;color:var(--text-3);margin-bottom:14px;display:block}
.news-empty p{color:var(--text-2);margin-bottom:16px}

/* ---------- FAQ ---------- */
.faq .accordion-item{border:0;border-bottom:1px solid var(--line);background:transparent}
.faq .accordion-button{
  background:transparent;box-shadow:none;padding:22px 44px 22px 0;font-family:var(--serif);
  font-size:18.5px;font-weight:700;color:var(--ink);border-radius:0;
}
.faq .accordion-button:not(.collapsed){color:var(--accent);background:transparent;box-shadow:none}
.faq .accordion-button:focus{box-shadow:none;border-color:transparent}
.faq .accordion-button::after{
  display:none;
}
.faq .accordion-button .faq-icon{
  position:absolute;right:0;top:50%;transform:translateY(-50%);
  width:22px;height:22px;color:var(--text-3);
  transition:transform .3s var(--ease),color .3s var(--ease);
}
.faq .accordion-button:not(.collapsed) .faq-icon{color:var(--accent);transform:translateY(-50%) rotate(135deg)}
.faq .accordion-button{position:relative}
.faq .accordion-body{padding:0 60px 26px 0;color:var(--text-2);font-size:15.5px;line-height:1.85}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--ink);color:#fff;border-radius:18px;padding:56px 52px;
  display:grid;grid-template-columns:1.4fr 1fr;gap:40px;align-items:center;
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-80px;top:-80px;width:300px;height:300px;border-radius:50%;
  background:radial-gradient(circle,rgba(194,85,31,.35),transparent 68%);
}
.cta-band h2{color:#fff;position:relative}
.cta-band p{color:rgba(255,255,255,.72);margin-top:14px;font-size:16px;position:relative}
.cta-band__actions{display:flex;gap:14px;flex-wrap:wrap;position:relative;justify-content:flex-end}
.cta-band .btn-ink{background:var(--accent)}
.cta-band .btn-ink:hover{background:#fff;color:var(--ink)}
.cta-band .btn-line{border-color:rgba(255,255,255,.5);color:#fff}
.cta-band .btn-line:hover{background:#fff;color:var(--ink);border-color:#fff}

/* ---------- 页脚 ---------- */
.site-footer{background:#111317;color:rgba(255,255,255,.66);padding:68px 0 0;margin-top:0}
.footer__grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px;border-bottom:1px solid rgba(255,255,255,.1)}
.footer__brand .brand__mark{background:var(--accent)}
.footer__brand .brand__text{color:#fff}
.footer__brand p{margin-top:18px;font-size:14.5px;line-height:1.8;max-width:34ch;color:rgba(255,255,255,.55)}
.footer__col h4{color:#fff;font-size:15px;font-family:var(--sans);font-weight:700;margin-bottom:16px;letter-spacing:.02em}
.footer__col ul li{margin-bottom:10px}
.footer__col a{
  font-size:14.5px;color:rgba(255,255,255,.62);
  background-image:linear-gradient(currentColor,currentColor);
  background-size:0 1px;background-repeat:no-repeat;background-position:0 100%;
  transition:background-size .3s var(--ease),color .24s var(--ease);
}
.footer__col a:hover{color:#fff;background-size:100% 1px}
.footer__contact li{font-size:14.5px;margin-bottom:10px;color:rgba(255,255,255,.62)}
.footer__bottom{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;padding:22px 0 30px;font-size:13.5px;color:rgba(255,255,255,.42)}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .42s var(--ease),transform .42s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
.reveal:nth-child(2){transition-delay:.06s}
.reveal:nth-child(3){transition-delay:.12s}
.reveal:nth-child(4){transition-delay:.18s}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .channel-bar__inner{gap:10px}
  .hot-tags{max-width:260px}
}
@media (max-width:992px){
  .section{padding:72px 0}
  .section--tight{padding:56px 0}
  .hero{padding:52px 0 48px}
  .hero__grid{grid-template-columns:1fr;row-gap:38px}
  .hero__title,.hero__lead{max-width:none}
  .capability__grid{grid-template-columns:1fr;gap:36px}
  .scene__row{grid-template-columns:1fr;gap:26px;padding:30px 0}
  .scene__row--flip .scene__media{order:0}
  .case__grid{grid-template-columns:1fr;gap:26px}
  .case-card:nth-child(2){margin-top:0}
  .trust__grid{grid-template-columns:repeat(2,1fr);gap:24px 0}
  .trust__item{padding:0 20px}
  .trust__item:nth-child(odd){border-left:0;padding-left:0}
  .trust__item:nth-child(3),.trust__item:nth-child(4){border-top:1px solid var(--line);padding-top:22px}
  .cta-band{grid-template-columns:1fr;padding:40px 32px}
  .cta-band__actions{justify-content:flex-start}
  .hot-tags{display:none}
  .plan-hint{display:block}
  .footer__grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  body{font-size:16px}
  .section{padding:56px 0}
  .section-head{margin-bottom:28px}
  .hero__seal{width:52px;height:52px;font-size:15px;left:-8px;bottom:14px}
  .news-row--lead{display:block;padding:22px 0}
  .news-row--lead .news-row__thumb{width:100%;flex-basis:auto;margin-bottom:16px}
  .news-row--lead .news-row__title{font-size:20px}
  .news-row{flex-wrap:wrap}
  .news-row__thumb{width:76px;flex-basis:76px}
  .news-row__time{order:3;width:100%;padding-left:96px}
  .news-row__arrow{display:none}
  .faq .accordion-button{font-size:17px;padding-right:36px}
  .faq .accordion-body{padding-right:20px}
  .search-wrap{display:none}
  .brand-bar__inner{height:64px;gap:12px}
  .channel-bar{height:44px}
}
@media (max-width:576px){
  .hero__actions .btn-ink,.hero__actions .btn-line{width:100%}
  .cta-band{padding:32px 22px;border-radius:14px}
  .cta-band__actions{width:100%}
  .cta-band__actions .btn-ink,.cta-band__actions .btn-line{width:100%}
  .trust__grid{grid-template-columns:1fr;gap:0}
  .trust__item{border-left:0;padding:18px 0}
  .trust__item:nth-child(3),.trust__item:nth-child(4){padding-top:18px}
  .trust__item + .trust__item{border-top:1px solid var(--line)}
  .footer__grid{grid-template-columns:1fr}
  .case-card__metrics{gap:24px}
  .brand__text em{display:none}
}
@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{
  --ink:#16181D;
  --ink-soft:#1B1D21;
  --accent:#C2551F;
  --accent-soft:rgba(194,85,31,.12);
  --green:#2E6F63;
  --paper:#F6F4F0;
  --card:#FFFFFF;
  --line:#E3DFD8;
  --muted:#5A5F66;
  --faint:#8A8F96;
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,serif;
  --font-sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --r-card:14px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(22,24,29,.04);
  --sh-2:0 1px 2px rgba(22,24,29,.04),0 12px 32px rgba(22,24,29,.06);
  --sh-3:0 1px 2px rgba(22,24,29,.05),0 18px 42px rgba(22,24,29,.10);
  --ease:cubic-bezier(.22,.61,.36,1);
  --t:280ms;
  --gutter:24px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-soft);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;transition:color var(--t) var(--ease);}
a:hover{color:var(--accent);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,h5{margin:0;font-family:var(--font-serif);color:var(--ink);font-weight:700;line-height:1.25;}
p{margin:0;}
button{font-family:inherit;}
::selection{background:var(--accent);color:#fff;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px;}

.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding-left:var(--gutter);
  padding-right:var(--gutter);
}
@media (min-width:1400px){
  .container{max-width:1300px;}
}

/* ---------- Header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(246,244,240,.94);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--t) var(--ease),background var(--t) var(--ease);
}
.site-header.is-shrink{box-shadow:0 8px 24px rgba(22,24,29,.07);background:rgba(246,244,240,.98);}
.brand-bar{display:flex;align-items:center;height:74px;transition:height var(--t) var(--ease);}
.site-header.is-shrink .brand-bar{height:58px;}
.brand-bar__inner{display:flex;align-items:center;justify-content:space-between;gap:24px;width:100%;}
.brand{display:inline-flex;align-items:center;gap:10px;font-family:var(--font-serif);}
.brand__mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:10px;
  background:var(--ink);color:#fff;
  font-size:15px;font-weight:700;letter-spacing:.02em;
  font-family:var(--font-sans);
  transition:background var(--t) var(--ease),transform var(--t) var(--ease);
}
.brand:hover .brand__mark{background:var(--accent);transform:translateY(-1px);}
.brand__text{font-size:22px;font-weight:700;color:var(--ink);letter-spacing:-.01em;}
.brand__text em{font-style:normal;color:var(--accent);font-family:var(--font-sans);font-weight:600;font-size:19px;margin-left:2px;}
.site-header.is-shrink .brand__mark{width:32px;height:32px;font-size:13px;}
.site-header.is-shrink .brand__text{font-size:19px;}
.brand-bar__actions{display:flex;align-items:center;gap:14px;}
.search-wrap{position:relative;display:flex;align-items:center;}
.search-toggle{
  width:38px;height:38px;border:1px solid var(--line);background:#fff;color:var(--ink);
  border-radius:var(--r-pill);cursor:pointer;transition:all var(--t) var(--ease);
}
.search-toggle:hover{border-color:var(--ink);color:var(--accent);}
.search-field{
  width:0;opacity:0;padding:0;border:1px solid var(--line);border-radius:var(--r-pill);
  height:38px;background:#fff;color:var(--ink);font-size:14px;
  transition:width var(--t) var(--ease),opacity var(--t) var(--ease),padding var(--t) var(--ease),border-color var(--t) var(--ease);
}
.search-wrap.is-open .search-field{width:260px;opacity:1;padding:0 16px;margin-left:8px;}
.search-field:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft);}

.btn-ink{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:var(--r-btn);
  background:var(--ink);color:#fff;border:1.5px solid var(--ink);
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  transition:background var(--t) var(--ease),border-color var(--t) var(--ease),transform var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.btn-ink:hover{background:var(--accent);border-color:var(--accent);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-ink.btn-sm{padding:10px 18px;font-size:14px;}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:var(--r-btn);
  background:transparent;color:var(--ink);border:1.5px solid var(--ink);
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  transition:all var(--t) var(--ease);
}
.btn-ghost:hover{background:var(--ink);color:#fff;transform:translateY(-1px);}
.btn-ghost.on-dark{color:#fff;border-color:rgba(255,255,255,.55);}
.btn-ghost.on-dark:hover{background:#fff;color:var(--ink);border-color:#fff;}
.btn-text{
  display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;color:var(--ink);
  position:relative;
}
.btn-text i{transition:transform var(--t) var(--ease);font-size:13px;}
.btn-text::after{
  content:"";position:absolute;left:0;bottom:-4px;height:1px;width:0;background:var(--accent);
  transition:width var(--t) var(--ease);
}
.btn-text:hover{color:var(--accent);}
.btn-text:hover::after{width:100%;}
.btn-text:hover i{transform:translateX(4px);}

/* ---------- Channel bar ---------- */
.channel-bar{border-top:1px solid var(--line);background:rgba(255,255,255,.55);}
.channel-bar__inner{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:44px;padding-top:6px;padding-bottom:6px;
}
.channel-nav{display:flex;align-items:center;gap:26px;flex:0 0 auto;}
.channel-nav a{
  position:relative;padding:8px 0;font-size:15px;color:var(--muted);font-weight:500;white-space:nowrap;
}
.channel-nav a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--accent);
  transition:width var(--t) var(--ease);
}
.channel-nav a:hover{color:var(--ink);}
.channel-nav a:hover::after{width:100%;}
.channel-nav a.is-active{color:var(--ink);font-weight:600;}
.channel-nav a.is-active::after{width:100%;}
.hot-tags{display:flex;align-items:center;gap:10px;overflow-x:auto;scrollbar-width:none;}
.hot-tags::-webkit-scrollbar{display:none;}
.hot-tags a{
  flex:0 0 auto;font-size:13px;color:var(--muted);border:1px solid var(--line);
  border-radius:var(--r-pill);padding:4px 12px;background:#fff;white-space:nowrap;
  transition:all var(--t) var(--ease);
}
.hot-tags a:hover{color:var(--accent);border-color:var(--accent);}

/* ---------- Reading progress ---------- */
.read-progress{position:fixed;top:0;left:0;height:3px;width:0;background:var(--accent);z-index:1100;transition:width 120ms linear;}

/* ---------- Article hero ---------- */
.article-hero{
  background:linear-gradient(180deg,#FFFFFF 0%,rgba(255,255,255,0) 100%);
  border-bottom:1px solid var(--line);
  padding:36px 0 48px;
}
.breadcrumb-line{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:14px;color:var(--faint);margin-bottom:22px;
}
.breadcrumb-line a{color:var(--faint);}
.breadcrumb-line a:hover{color:var(--accent);}
.breadcrumb-line .sep{color:#C9C4BB;}
.breadcrumb-line .current{color:var(--ink-soft);}
.article-hero h1{
  font-size:clamp(28px,4vw,46px);
  line-height:1.22;
  letter-spacing:-.02em;
  max-width:960px;
  margin-bottom:22px;
}
.article-meta{
  display:flex;align-items:center;flex-wrap:wrap;gap:10px 22px;
  font-size:14px;color:var(--muted);
}
.article-meta i{color:var(--faint);margin-right:6px;font-size:13px;}
.meta-cat{
  display:inline-flex;align-items:center;
  border:1px solid var(--accent);color:var(--accent);
  border-radius:var(--r-pill);padding:2px 12px;font-size:13px;font-weight:600;
}

/* ---------- Article body ---------- */
.article-main{padding:56px 0 24px;}
.article-grid{display:block;}
.article-column{max-width:760px;margin:0 auto;}
.article-cover{
  border-radius:var(--r-card);overflow:hidden;margin-bottom:40px;
  border:1px solid var(--line);background:#EFECE6;box-shadow:var(--sh-1);
}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform 420ms var(--ease);}
.article-cover:hover img{transform:scale(1.03);}
.article-cover figcaption{font-size:13px;color:var(--faint);padding:10px 16px;background:#fff;border-top:1px solid var(--line);}

.prose{font-size:17px;line-height:1.85;color:var(--ink-soft);}
.prose > * + *{margin-top:1.2em;}
.prose p{margin:0;}
.prose h2{
  font-size:clamp(22px,2.6vw,28px);
  margin-top:2.2em;
  margin-bottom:.7em;
  padding-left:16px;
  border-left:3px solid var(--accent);
  line-height:1.35;
}
.prose h3{font-size:20px;margin-top:1.8em;margin-bottom:.6em;color:var(--ink);}
.prose h4{font-size:17px;margin-top:1.5em;margin-bottom:.5em;color:var(--ink);}
.prose a{color:var(--accent);border-bottom:1px solid rgba(194,85,31,.35);}
.prose a:hover{border-bottom-color:var(--accent);}
.prose strong{color:var(--ink);font-weight:700;}
.prose img{border-radius:12px;margin:1.6em 0;box-shadow:var(--sh-1);}
.prose blockquote{
  margin:1.8em 0;padding:18px 24px;
  border-left:3px solid var(--accent);
  background:#FFFFFF;border-radius:0 var(--r-card) var(--r-card) 0;
  color:var(--muted);font-family:var(--font-serif);font-size:17px;
}
.prose ul,.prose ol{margin:1.2em 0;padding-left:0;}
.prose ul li,.prose ol li{position:relative;padding-left:26px;margin-bottom:.6em;}
.prose ul li::before{
  content:"";position:absolute;left:4px;top:.78em;
  width:7px;height:7px;border-radius:2px;background:var(--accent);transform:rotate(45deg);
}
.prose ol{counter-reset:item;}
.prose ol li{counter-increment:item;}
.prose ol li::before{
  content:counter(item,decimal-leading-zero);
  position:absolute;left:0;top:0;font-size:13px;font-weight:700;color:var(--accent);
  font-family:var(--font-sans);letter-spacing:.02em;
}
.prose table{
  width:100%;border-collapse:separate;border-spacing:0;margin:1.8em 0;font-size:15px;
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
}
.prose thead th{background:#EFECE6;color:var(--ink);font-weight:700;text-align:left;}
.prose th,.prose td{padding:12px 16px;border-bottom:1px solid var(--line);}
.prose tbody tr:nth-child(even){background:var(--paper);}
.prose tbody tr:last-child td{border-bottom:0;}
.prose code{
  background:#EFECE6;border-radius:6px;padding:2px 7px;font-size:14px;color:#8C3C12;
}
.prose pre{
  background:var(--ink);color:#EDE9E3;padding:20px;border-radius:var(--r-card);
  overflow-x:auto;font-size:14px;line-height:1.7;
}
.prose pre code{background:none;color:inherit;padding:0;}
.prose hr{border:0;border-top:1px solid var(--line);margin:2.4em 0;}

.tag-row{display:flex;align-items:center;flex-wrap:wrap;gap:10px;margin-top:44px;padding-top:28px;border-top:1px solid var(--line);}
.tag-row .label{font-size:14px;color:var(--faint);margin-right:4px;}
.tag-pill{
  display:inline-flex;align-items:center;font-size:13px;color:var(--muted);
  border:1px solid var(--line);background:#fff;border-radius:var(--r-pill);padding:5px 14px;
  transition:all var(--t) var(--ease);
}
.tag-pill:hover{color:var(--accent);border-color:var(--accent);}

.empty-state{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:64px 32px;text-align:center;box-shadow:var(--sh-1);
}
.empty-state i{font-size:34px;color:var(--faint);}
.empty-state h2{font-size:22px;margin:18px 0 10px;}
.empty-state p{color:var(--muted);margin-bottom:24px;}

/* ---------- Return nav ---------- */
.return-nav{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  flex-wrap:wrap;margin-top:44px;padding:22px 26px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);
}
.return-nav .back-links{display:flex;gap:22px;flex-wrap:wrap;}

/* ---------- Section shell ---------- */
.section{padding:88px 0;}
.section--tight{padding:64px 0;}
.section--paper{background:var(--paper);}
.section--white{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap;}
.section-head h2{font-size:clamp(23px,2.8vw,32px);letter-spacing:-.01em;}
.section-head p{color:var(--muted);font-size:15px;margin-top:10px;max-width:620px;}

/* ---------- Related list ---------- */
.related-list{display:flex;flex-direction:column;gap:16px;}
.related-card{
  display:grid;grid-template-columns:120px 1fr auto;gap:22px;align-items:center;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:18px 22px 18px 18px;box-shadow:var(--sh-1);
  transition:transform var(--t) var(--ease),box-shadow var(--t) var(--ease),border-color var(--t) var(--ease);
  position:relative;
}
.related-card::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--accent);
  transform:scaleX(0);transform-origin:left;transition:transform var(--t) var(--ease);
}
.related-card:hover{transform:translateY(-2px);box-shadow:var(--sh-3);border-color:#D8D2C8;color:inherit;}
.related-card:hover::after{transform:scaleX(1);}
.related-card img{
  width:120px;height:82px;object-fit:cover;border-radius:10px;background:#EFECE6;
}
.related-card .rc-cat{
  display:inline-block;font-size:12px;color:var(--accent);border:1px solid var(--accent);
  border-radius:var(--r-pill);padding:1px 10px;margin-bottom:8px;
}
.related-card h3{font-size:18px;line-height:1.45;margin-bottom:6px;transition:color var(--t) var(--ease);}
.related-card:hover h3{color:var(--accent);}
.related-card p{font-size:14px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.related-card .rc-time{font-size:13px;color:var(--faint);text-align:right;white-space:nowrap;}
.related-card .rc-arrow{font-size:13px;color:var(--faint);transition:transform var(--t) var(--ease),color var(--t) var(--ease);}
.related-card:hover .rc-arrow{transform:translateX(4px);color:var(--accent);}
.rc-right{display:flex;flex-direction:column;align-items:flex-end;gap:12px;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px;margin:0 auto;}
.faq-acc .accordion-item{
  background:transparent;border:0;border-bottom:1px solid var(--line);border-radius:0;
}
.faq-acc .accordion-item:first-child{border-top:1px solid var(--line);}
.faq-acc .accordion-header{margin:0;font-family:var(--font-sans);}
.faq-acc .accordion-button{
  background:transparent;box-shadow:none;border:0;
  font-family:var(--font-serif);font-size:19px;font-weight:700;color:var(--ink);
  padding:24px 48px 24px 0;position:relative;line-height:1.5;
}
.faq-acc .accordion-button:not(.collapsed){color:var(--accent);background:transparent;box-shadow:none;}
.faq-acc .accordion-button:focus{box-shadow:none;outline:2px solid var(--accent);outline-offset:-2px;border-radius:6px;}
.faq-acc .accordion-button::after{
  content:"";background-image:none !important;
  width:11px;height:11px;margin:0;
  border-right:2px solid currentColor;border-bottom:2px solid currentColor;
  position:absolute;right:14px;top:50%;
  transform:translateY(-70%) rotate(45deg);
  transition:transform var(--t) var(--ease);
}
.faq-acc .accordion-button:not(.collapsed)::after{transform:translateY(-30%) rotate(-135deg);}
.faq-acc .accordion-body{padding:0 60px 26px 0;color:var(--muted);font-size:16px;line-height:1.85;}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--ink);color:#EFEDE9;border-radius:0;
  padding:80px 0;position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;right:-120px;top:-120px;width:360px;height:360px;border-radius:50%;
  background:radial-gradient(circle,rgba(194,85,31,.35) 0%,rgba(194,85,31,0) 70%);
}
.cta-inner{position:relative;display:grid;grid-template-columns:1.35fr .9fr;gap:48px;align-items:center;}
.cta-band h2{color:#fff;font-size:clamp(24px,3vw,34px);margin-bottom:16px;}
.cta-band p{color:#B9B5AE;font-size:16px;max-width:560px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;justify-content:flex-end;}
.cta-actions .btn-ink{background:var(--accent);border-color:var(--accent);color:#fff;}
.cta-actions .btn-ink:hover{background:#fff;border-color:#fff;color:var(--ink);}

/* ---------- Footer ---------- */
.site-footer{background:var(--paper);border-top:1px solid var(--line);padding:72px 0 0;}
.footer__grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:44px;}
.footer__brand p{font-size:14px;color:var(--muted);margin-top:18px;max-width:340px;line-height:1.85;}
.footer__col h4{font-size:15px;font-family:var(--font-sans);font-weight:700;color:var(--ink);margin-bottom:18px;}
.footer__col ul li{margin-bottom:12px;font-size:14px;color:var(--muted);}
.footer__col ul li a{color:var(--muted);position:relative;}
.footer__col ul li a::after{
  content:"";position:absolute;left:0;bottom:-3px;height:1px;width:0;background:var(--accent);
  transition:width var(--t) var(--ease);
}
.footer__col ul li a:hover{color:var(--accent);}
.footer__col ul li a:hover::after{width:100%;}
.footer__contact ul li i{color:var(--accent);margin-right:8px;width:16px;}
.footer__bottom{
  margin-top:56px;padding:22px 0;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--faint);
}

/* ---------- Back to top ---------- */
.to-top{
  position:fixed;right:24px;bottom:28px;width:44px;height:44px;border-radius:50%;
  background:var(--ink);color:#fff;border:0;display:flex;align-items:center;justify-content:center;
  cursor:pointer;opacity:0;pointer-events:none;transform:translateY(10px);
  transition:opacity var(--t) var(--ease),transform var(--t) var(--ease),background var(--t) var(--ease);
  z-index:1050;box-shadow:var(--sh-2);
}
.to-top.is-show{opacity:1;pointer-events:auto;transform:translateY(0);}
.to-top:hover{background:var(--accent);}

/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 420ms var(--ease),transform 420ms var(--ease);}
.reveal.is-in{opacity:1;transform:none;}

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

/* ---------- Responsive ---------- */
@media (max-width:1199.98px){
  .hot-tags{max-width:46%;}
}
@media (max-width:991.98px){
  .channel-bar__inner{flex-direction:column;align-items:flex-start;gap:8px;padding-top:10px;padding-bottom:10px;}
  .channel-nav{gap:20px;overflow-x:auto;width:100%;scrollbar-width:none;}
  .channel-nav::-webkit-scrollbar{display:none;}
  .hot-tags{max-width:100%;width:100%;}
  .cta-inner{grid-template-columns:1fr;gap:28px;}
  .cta-actions{justify-content:flex-start;}
  .footer__grid{grid-template-columns:1fr 1fr;gap:36px;}
  .section{padding:64px 0;}
}
@media (max-width:767.98px){
  :root{--gutter:16px;}
  .brand-bar{height:64px;}
  .brand__text{font-size:19px;}
  .search-wrap.is-open .search-field{width:180px;}
  .article-hero{padding:26px 0 34px;}
  .article-main{padding:36px 0 12px;}
  .prose{font-size:16px;line-height:1.8;}
  .related-card{grid-template-columns:96px 1fr;gap:16px;padding:14px;}
  .related-card img{width:96px;height:70px;}
  .rc-right{grid-column:2;flex-direction:row;justify-content:space-between;align-items:center;width:100%;}
  .footer__grid{grid-template-columns:1fr;gap:30px;}
  .section{padding:52px 0;}
  .cta-band{padding:56px 0;}
}
@media (max-width:575.98px){
  .brand-bar__actions .btn-ink{display:none;}
  .article-hero h1{font-size:26px;}
  .btn-ink,.btn-ghost{width:100%;}
  .cta-actions{flex-direction:column;}
  .return-nav{flex-direction:column;align-items:flex-start;}
  .faq-acc .accordion-button{font-size:17px;padding:20px 42px 20px 0;}
  .faq-acc .accordion-body{padding-right:0;}
  .to-top{right:14px;bottom:16px;}
}

/* roulang page: category1 */
:root{
  --ink:#16181D;
  --accent:#C2551F;
  --accent-soft:rgba(194,85,31,.12);
  --green:#2E6F63;
  --paper:#F6F4F0;
  --card:#FFFFFF;
  --line:#E3DFD8;
  --line-strong:#D3CCC1;
  --text:#1B1D21;
  --text-2:#5A5F66;
  --text-3:#8A8F96;
  --r-card:14px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(22,24,29,.04);
  --sh-2:0 1px 2px rgba(22,24,29,.04),0 12px 32px rgba(22,24,29,.06);
  --sh-3:0 1px 2px rgba(22,24,29,.05),0 18px 40px rgba(22,24,29,.10);
  --ease:cubic-bezier(.22,.61,.36,1);
  --t:280ms;
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,serif;
  --sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16.5px;
  line-height:1.8;
  color:var(--text);
  background-color:var(--paper);
  background-image:linear-gradient(rgba(246,244,240,.97),rgba(246,244,240,.99)),url("/assets/images/backpic/back-3.webp");
  background-size:cover;
  background-attachment:fixed;
  background-position:center;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color var(--t) var(--ease)}
a:hover{color:var(--accent)}
button,input{font-family:inherit;font-size:inherit}
h1,h2,h3,h4{font-family:var(--serif);color:var(--ink);margin:0;letter-spacing:-.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
::selection{background:var(--accent);color:#fff}

.container{width:100%;max-width:1240px;margin:0 auto;padding-left:24px;padding-right:24px}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(246,244,240,.94);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 8px 24px rgba(22,24,29,.05)}
.brand-bar__inner{display:flex;align-items:center;justify-content:space-between;gap:18px;height:74px;transition:height var(--t) var(--ease)}
.is-scrolled .brand-bar__inner{height:58px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink)}
.brand:hover{color:var(--ink)}
.brand__mark{
  display:grid;place-items:center;width:36px;height:36px;border-radius:10px;
  background:var(--ink);color:#fff;font-weight:700;font-size:14px;letter-spacing:.02em;
  transition:width var(--t) var(--ease),height var(--t) var(--ease),font-size var(--t) var(--ease);
}
.brand__text{font-family:var(--serif);font-size:21px;font-weight:700;line-height:1;transition:font-size var(--t) var(--ease)}
.brand__text em{font-style:normal;color:var(--accent)}
.is-scrolled .brand__mark{width:30px;height:30px;font-size:12px;border-radius:8px}
.is-scrolled .brand__text{font-size:18px}
.brand-bar__actions{display:flex;align-items:center;gap:12px}
.search-wrap{
  display:flex;align-items:center;height:40px;background:#fff;
  border:1.5px solid var(--line);border-radius:var(--r-pill);overflow:hidden;
  transition:border-color var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.search-wrap:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.search-toggle{width:38px;height:38px;border:0;background:transparent;color:var(--text-2);cursor:pointer;display:grid;place-items:center}
.search-toggle:hover{color:var(--accent)}
.search-field{width:0;height:100%;border:0;outline:none;background:transparent;padding:0;font-size:14px;transition:width var(--t) var(--ease),padding var(--t) var(--ease)}
.search-wrap.is-open .search-field{width:240px;padding-right:16px}
.btn-ink{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  background:var(--ink);border:1.5px solid var(--ink);color:#fff;
  font-size:15px;font-weight:600;white-space:nowrap;cursor:pointer;
  transition:background var(--t) var(--ease),border-color var(--t) var(--ease),transform var(--t) var(--ease),box-shadow var(--t) var(--ease),color var(--t) var(--ease);
}
.btn-ink:hover{background:var(--accent);border-color:var(--accent);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-ink:active{transform:translateY(0)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  background:transparent;border:1.5px solid var(--ink);color:var(--ink);
  font-size:15px;font-weight:600;white-space:nowrap;cursor:pointer;
  transition:background var(--t) var(--ease),color var(--t) var(--ease),transform var(--t) var(--ease);
}
.btn-ghost:hover{background:var(--ink);color:#fff;transform:translateY(-1px)}
.channel-bar{border-top:1px solid var(--line)}
.channel-bar__inner{display:flex;align-items:center;gap:20px;height:46px}
.channel-nav{display:flex;gap:26px;flex-shrink:0}
.channel-nav a{position:relative;font-size:15px;color:var(--text-2);padding:6px 0;white-space:nowrap}
.channel-nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--accent);
  transform:scaleX(0);transform-origin:left;transition:transform var(--t) var(--ease);
}
.channel-nav a:hover{color:var(--ink)}
.channel-nav a:hover::after,.channel-nav a.is-active::after{transform:scaleX(1)}
.channel-nav a.is-active{color:var(--ink);font-weight:600}
.hot-tags{margin-left:auto;display:flex;gap:8px;overflow-x:auto;scrollbar-width:none}
.hot-tags::-webkit-scrollbar{display:none}
.hot-tags a{
  font-size:13px;color:var(--text-3);white-space:nowrap;
  border:1px solid var(--line);border-radius:var(--r-pill);padding:4px 12px;
  transition:color var(--t) var(--ease),border-color var(--t) var(--ease),background var(--t) var(--ease);
}
.hot-tags a:hover{color:var(--accent);border-color:var(--accent);background:#fff}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0}
.section--tight{padding:64px 0}
.section--alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{max-width:760px;margin-bottom:44px}
.sec-head--center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);font-weight:600;margin-bottom:14px}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--accent);display:inline-block}
.sec-head h2{font-size:clamp(24px,3.4vw,38px);line-height:1.28;font-weight:700}
.sec-head p{margin-top:16px;color:var(--text-2);font-size:16.5px;line-height:1.85}
.text-accent{color:var(--accent)}
.num{font-variant-numeric:tabular-nums}
.link-more{display:inline-flex;align-items:center;gap:8px;font-weight:600;color:var(--ink);font-size:15px}
.link-more i{transition:transform var(--t) var(--ease)}
.link-more:hover{color:var(--accent)}
.link-more:hover i{transform:translateX(4px)}

/* ---------- 分类首屏 ---------- */
.page-hero{
  position:relative;
  padding:36px 0 68px;
  background-color:var(--paper);
  background-image:linear-gradient(rgba(246,244,240,.93),rgba(246,244,240,.98)),url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center;
}
.breadcrumb-x{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-3);margin-bottom:26px;flex-wrap:wrap}
.breadcrumb-x a{color:var(--text-3)}
.breadcrumb-x a:hover{color:var(--accent)}
.breadcrumb-x span.sep{color:var(--line-strong)}
.breadcrumb-x span.current{color:var(--text)}
.page-hero__grid{display:grid;grid-template-columns:minmax(0,6fr) minmax(0,5fr);gap:48px;align-items:center}
.badge-line{display:inline-flex;align-items:center;gap:10px;font-size:13px;color:var(--text-2);border:1px solid var(--line);background:#fff;border-radius:var(--r-pill);padding:6px 14px;margin-bottom:20px}
.badge-line i{color:var(--accent)}
.page-hero h1{font-size:clamp(30px,5vw,50px);line-height:1.18;font-weight:700;letter-spacing:-.02em}
.page-hero h1 em{font-style:normal;color:var(--accent)}
.hero-lead{margin-top:20px;font-size:17px;color:var(--text-2);line-height:1.85;max-width:560px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:30px}
.hero-figure{position:relative;border-radius:16px;overflow:hidden;border:6px solid #fff;box-shadow:var(--sh-3)}
.hero-figure img{width:100%;aspect-ratio:4/3;object-fit:cover}
.hero-figure figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:14px 18px;font-size:13px;color:#fff;
  background:linear-gradient(to top,rgba(22,24,29,.72),rgba(22,24,29,0));
}
.anchor-bar{display:flex;gap:10px;flex-wrap:wrap;margin-top:38px;padding-top:26px;border-top:1px solid var(--line)}
.anchor-bar a{
  font-size:14px;color:var(--text-2);border:1px solid var(--line);background:#fff;
  border-radius:var(--r-pill);padding:8px 18px;
  transition:color var(--t) var(--ease),border-color var(--t) var(--ease),background var(--t) var(--ease),transform var(--t) var(--ease);
}
.anchor-bar a:hover{color:#fff;background:var(--accent);border-color:var(--accent);transform:translateY(-1px)}

/* ---------- 数据条 ---------- */
.fact-bar{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-radius:var(--r-card);background:#fff;border:1px solid var(--line);box-shadow:var(--sh-1);overflow:hidden}
.fact{padding:28px 26px;border-right:1px solid var(--line)}
.fact:last-child{border-right:0}
.fact__num{font-family:var(--serif);font-size:34px;font-weight:700;color:var(--ink);line-height:1.1;font-variant-numeric:tabular-nums}
.fact__num em{font-style:normal;font-size:20px;color:var(--accent);margin-left:2px}
.fact__label{margin-top:10px;font-size:14px;color:var(--text-2)}

/* ---------- 编号时间轴 ---------- */
.timeline{position:relative;margin-top:8px}
.tl-item{position:relative;display:grid;grid-template-columns:72px minmax(0,1fr);gap:26px;padding-bottom:30px}
.tl-item:not(:last-child)::after{content:"";position:absolute;left:35px;top:66px;bottom:4px;width:1px;background:var(--line)}
.tl-num{
  width:72px;height:56px;border-radius:12px;background:#fff;border:1px solid var(--line);
  display:grid;place-items:center;font-family:var(--serif);font-size:20px;font-weight:700;color:var(--ink);
  font-variant-numeric:tabular-nums;box-shadow:var(--sh-1);
  transition:color var(--t) var(--ease),border-color var(--t) var(--ease),transform var(--t) var(--ease);
}
.tl-body{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 28px;box-shadow:var(--sh-1);
  transition:box-shadow var(--t) var(--ease),transform var(--t) var(--ease),border-color var(--t) var(--ease);
}
.tl-body h3{font-size:21px;margin-bottom:12px}
.tl-body p{color:var(--text-2);font-size:16px}
.tl-body ul{margin-top:16px}
.tl-body li{position:relative;padding-left:20px;color:var(--text-2);font-size:15.5px;margin-bottom:8px}
.tl-body li::before{content:"";position:absolute;left:0;top:12px;width:8px;height:2px;background:var(--accent)}
.tl-item:hover .tl-num{color:var(--accent);border-color:var(--accent);transform:translateY(-2px)}
.tl-item:hover .tl-body{box-shadow:var(--sh-2);transform:translateY(-2px);border-color:var(--line-strong)}

/* ---------- 非对称双栏 ---------- */
.split{display:grid;grid-template-columns:minmax(0,1.12fr) minmax(0,1fr);gap:40px;align-items:start}
.feature-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);
}
.feature-card__img{aspect-ratio:16/10;overflow:hidden;background:#EFECE6}
.feature-card__img img{width:100%;height:100%;object-fit:cover;transition:transform 420ms var(--ease)}
.feature-card:hover .feature-card__img img{transform:scale(1.03)}
.feature-card__body{padding:26px 28px}
.feature-card__body h3{font-size:22px;margin-bottom:12px}
.feature-card__body p{color:var(--text-2)}
.tag-row{display:flex;gap:8px;flex-wrap:wrap;margin-top:18px}
.tag{font-size:13px;color:var(--accent);border:1px solid var(--accent);border-radius:var(--r-pill);padding:3px 12px}
.item-list{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1)}
.item-list__row{
  display:grid;grid-template-columns:56px minmax(0,1fr);gap:18px;
  padding:24px 26px;border-bottom:1px solid var(--line);
  transition:background var(--t) var(--ease);
}
.item-list__row:last-child{border-bottom:0}
.item-list__row:hover{background:#FCFAF7}
.item-list__no{font-family:var(--serif);font-size:18px;font-weight:700;color:var(--text-3);font-variant-numeric:tabular-nums;transition:color var(--t) var(--ease),transform var(--t) var(--ease)}
.item-list__row:hover .item-list__no{color:var(--accent);transform:translateX(2px)}
.item-list__row h4{font-size:18px;margin-bottom:6px}
.item-list__row p{font-size:15px;color:var(--text-2)}

/* ---------- 场景卡 ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:26px}
.scene-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:box-shadow var(--t) var(--ease),transform var(--t) var(--ease),border-color var(--t) var(--ease);
}
.scene-card:hover{box-shadow:var(--sh-2);transform:translateY(-3px);border-color:var(--line-strong)}
.scene-card__img{aspect-ratio:4/3;overflow:hidden;background:#EFECE6}
.scene-card__img img{width:100%;height:100%;object-fit:cover;transition:transform 420ms var(--ease)}
.scene-card:hover .scene-card__img img{transform:scale(1.03)}
.scene-card__body{padding:24px 26px 26px;flex:1;display:flex;flex-direction:column}
.scene-card__body h3{font-size:20px;margin-bottom:10px}
.scene-card__body p{color:var(--text-2);font-size:15.5px;flex:1}

/* ---------- FAQ ---------- */
.faq-wrap{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:8px 32px;box-shadow:var(--sh-1)}
.faq-list .accordion-item{border:0;border-bottom:1px solid var(--line);background:transparent}
.faq-list .accordion-item:last-child{border-bottom:0}
.faq-list .accordion-button{
  background:transparent;border:0;border-radius:0 !important;
  color:var(--ink);font-family:var(--serif);font-size:19px;font-weight:700;line-height:1.5;
  padding:24px 48px 24px 0;box-shadow:none;
}
.faq-list .accordion-button:not(.collapsed){color:var(--accent);background:transparent;box-shadow:none}
.faq-list .accordion-button:focus{box-shadow:none;outline:2px solid var(--accent);outline-offset:2px}
.faq-list .accordion-button::after{
  content:"+";background-image:none;width:auto;height:auto;
  font-family:var(--sans);font-size:22px;font-weight:400;color:var(--accent);
  display:flex;align-items:center;justify-content:center;
  transform:none;transition:transform var(--t) var(--ease);
}
.faq-list .accordion-button:not(.collapsed)::after{content:"−";background-image:none;transform:none}
.faq-list .accordion-body{padding:0 64px 24px 0;color:var(--text-2);font-size:16px;line-height:1.85}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--ink);color:#fff;border-radius:18px;padding:52px 48px;
  display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,1fr);gap:36px;align-items:center;
  box-shadow:var(--sh-3);
}
.cta-band h2{color:#fff;font-size:clamp(24px,3.2vw,34px);line-height:1.3}
.cta-band p{color:rgba(255,255,255,.72);margin-top:14px;font-size:16px}
.cta-band__actions{display:flex;gap:12px;flex-wrap:wrap;justify-content:flex-end}
.btn-paper{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 22px;
  border-radius:var(--r-btn);background:#fff;border:1.5px solid #fff;color:var(--ink);
  font-weight:600;font-size:15px;cursor:pointer;
  transition:background var(--t) var(--ease),color var(--t) var(--ease),transform var(--t) var(--ease);
}
.btn-paper:hover{background:var(--accent);border-color:var(--accent);color:#fff;transform:translateY(-1px)}
.btn-line{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 22px;
  border-radius:var(--r-btn);background:transparent;border:1.5px solid rgba(255,255,255,.42);color:#fff;
  font-weight:600;font-size:15px;cursor:pointer;
  transition:background var(--t) var(--ease),border-color var(--t) var(--ease),transform var(--t) var(--ease);
}
.btn-line:hover{background:rgba(255,255,255,.12);border-color:#fff;color:#fff;transform:translateY(-1px)}

/* ---------- 相关推荐 ---------- */
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.rel-card{
  display:block;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px 26px;box-shadow:var(--sh-1);
  transition:box-shadow var(--t) var(--ease),transform var(--t) var(--ease),border-color var(--t) var(--ease);
}
.rel-card:hover{box-shadow:var(--sh-2);transform:translateY(-3px);border-color:var(--line-strong);color:inherit}
.rel-card h3{font-size:18px;margin-bottom:10px;transition:color var(--t) var(--ease)}
.rel-card:hover h3{color:var(--accent)}
.rel-card p{font-size:15px;color:var(--text-2)}
.rel-card .arrow{margin-top:16px;font-size:14px;color:var(--accent);display:inline-flex;align-items:center;gap:6px}
.rel-card:hover .arrow i{transform:translateX(4px)}
.rel-card .arrow i{transition:transform var(--t) var(--ease)}
.back-line{margin-top:34px;display:flex;gap:24px;flex-wrap:wrap;align-items:center;color:var(--text-2);font-size:15px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);padding:64px 0 26px;margin-top:96px}
.site-footer .brand__mark{background:#fff;color:var(--ink)}
.site-footer .brand__text{color:#fff}
.footer__grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.footer__brand p{margin-top:18px;font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.6);max-width:340px}
.footer__col h4{color:#fff;font-size:16px;margin-bottom:18px;font-family:var(--sans);font-weight:600}
.footer__col li{margin-bottom:11px;font-size:14.5px}
.footer__col a{color:rgba(255,255,255,.66);position:relative}
.footer__col a::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:1px;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform var(--t) var(--ease)}
.footer__col a:hover{color:#fff}
.footer__col a:hover::after{transform:scaleX(1)}
.footer__contact li{color:rgba(255,255,255,.66)}
.footer__contact i{color:var(--accent);margin-right:8px}
.footer__bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:13.5px;color:rgba(255,255,255,.5);
}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 420ms var(--ease),transform 420ms var(--ease)}
.reveal.is-in{opacity:1;transform:none}

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

/* ---------- 响应式 ---------- */
@media (min-width:1400px){
  .container{max-width:1300px;padding-left:32px;padding-right:32px}
  .section{padding:104px 0}
}
@media (max-width:1200px){
  .container{max-width:100%;padding-left:22px;padding-right:22px}
  .footer__grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
  .footer__contact{grid-column:1/-1}
}
@media (max-width:991px){
  .channel-bar__inner{height:auto;padding-top:6px;padding-bottom:10px;flex-direction:column;align-items:stretch;gap:10px}
  .channel-nav{gap:20px;overflow-x:auto;padding-bottom:4px;scrollbar-width:none}
  .channel-nav::-webkit-scrollbar{display:none}
  .hot-tags{margin-left:0;padding-bottom:2px}
  .page-hero__grid{grid-template-columns:1fr;gap:34px}
  .hero-lead{max-width:none}
  .split{grid-template-columns:1fr;gap:28px}
  .scene-grid{grid-template-columns:1fr 1fr}
  .fact-bar{grid-template-columns:1fr 1fr}
  .fact:nth-child(2){border-right:0}
  .fact:nth-child(1),.fact:nth-child(2){border-bottom:1px solid var(--line)}
  .rel-grid{grid-template-columns:1fr 1fr}
  .cta-band{grid-template-columns:1fr;padding:42px 34px}
  .cta-band__actions{justify-content:flex-start}
  .search-wrap.is-open .search-field{width:180px}
}
@media (max-width:767px){
  body{font-size:16px}
  .section{padding:60px 0}
  .section--tight{padding:48px 0}
  .brand-bar__inner{height:64px}
  .page-hero{padding:24px 0 52px}
  .page-hero h1{font-size:clamp(26px,7vw,34px)}
  .hero-actions .btn-ink,.hero-actions .btn-ghost{width:100%}
  .fact-bar{grid-template-columns:1fr}
  .fact{border-right:0;border-bottom:1px solid var(--line)}
  .fact:last-child{border-bottom:0}
  .scene-grid{grid-template-columns:1fr}
  .rel-grid{grid-template-columns:1fr}
  .tl-item{grid-template-columns:56px minmax(0,1fr);gap:16px}
  .tl-num{width:56px;height:48px;font-size:17px;border-radius:10px}
  .tl-item:not(:last-child)::after{left:27px;top:56px}
  .tl-body{padding:22px 20px}
  .faq-wrap{padding:4px 20px}
  .faq-list .accordion-button{font-size:17px;padding:20px 40px 20px 0}
  .faq-list .accordion-body{padding:0 0 20px;font-size:15.5px}
  .anchor-bar a{font-size:13.5px;padding:7px 14px}
  .footer__grid{grid-template-columns:1fr 1fr}
  .footer__brand{grid-column:1/-1}
  .site-footer{margin-top:64px;padding-top:48px}
}
@media (max-width:575px){
  .container{padding-left:16px;padding-right:16px}
  .brand-bar__actions .btn-sm{display:none}
  .search-wrap.is-open .search-field{width:140px}
  .footer__grid{grid-template-columns:1fr}
  .footer__col{margin-top:6px}
  .cta-band{padding:34px 22px;border-radius:14px}
  .cta-band__actions .btn-paper,.cta-band__actions .btn-line{width:100%}
  .hero-actions .btn-ink,.hero-actions .btn-ghost{height:48px}
}

/* roulang page: category2 */
:root{
  --ink:#16181D;
  --ink-soft:#22252C;
  --accent:#C2551F;
  --accent-soft:rgba(194,85,31,.12);
  --green:#2E6F63;
  --paper:#F6F4F0;
  --card:#FFFFFF;
  --line:#E3DFD8;
  --text:#1B1D21;
  --muted:#5A5F66;
  --faint:#8A8F96;
  --r-card:14px;
  --r-btn:10px;
  --r-pill:999px;
  --sh1:0 1px 2px rgba(22,24,29,.04);
  --sh2:0 12px 32px rgba(22,24,29,.06);
  --sh3:0 12px 32px rgba(22,24,29,.10);
  --ease:cubic-bezier(.22,.61,.36,1);
  --dur:300ms;
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",Georgia,serif;
  --font-sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16.5px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);}
a:hover{color:var(--accent);}
button,input{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4{font-family:var(--font-serif);color:var(--ink);margin:0;font-weight:700;letter-spacing:-.01em;}
p{margin:0 0 1em;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px;}
@media (min-width:1400px){.container{max-width:1320px;}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(246,244,240,.9);
  backdrop-filter:saturate(140%) blur(12px);
  border-bottom:1px solid transparent;
  transition:background var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.site-header.is-scrolled{
  background:rgba(246,244,240,.97);
  border-bottom-color:var(--line);
  box-shadow:var(--sh1);
}
.brand-bar__inner{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  height:74px;
  transition:height var(--dur) var(--ease);
}
.site-header.is-scrolled .brand-bar__inner{height:58px;}
.brand{display:inline-flex;align-items:center;gap:10px;}
.brand__mark{
  width:38px;height:38px;border-radius:10px;background:var(--ink);color:#fff;
  display:grid;place-items:center;font-weight:700;font-size:14px;letter-spacing:.03em;
  transition:transform var(--dur) var(--ease);
}
.site-header.is-scrolled .brand__mark{transform:scale(.94);}
.brand__text{font-family:var(--font-serif);font-size:19px;font-weight:700;color:var(--ink);line-height:1;}
.brand__text em{font-style:normal;color:var(--accent);font-family:var(--font-sans);font-size:12px;font-weight:700;letter-spacing:.12em;margin-left:6px;text-transform:lowercase;vertical-align:middle;}
.brand-bar__actions{display:flex;align-items:center;gap:12px;}
.search-wrap{display:flex;align-items:center;gap:8px;}
.search-toggle{
  width:40px;height:40px;border-radius:var(--r-btn);border:1px solid var(--line);
  background:#fff;color:var(--ink);display:grid;place-items:center;cursor:pointer;
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.search-toggle:hover{border-color:var(--ink);}
.search-field{
  width:0;opacity:0;padding:0;border:1px solid var(--line);background:#fff;
  height:40px;border-radius:var(--r-btn);color:var(--text);
  transition:width var(--dur) var(--ease),opacity var(--dur) var(--ease),padding var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.search-wrap.is-open .search-field{width:262px;opacity:1;padding:0 14px;}
.search-field:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft);}
.channel-bar{border-top:1px solid var(--line);}
.channel-bar__inner{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:44px;}
.channel-nav{display:flex;align-items:center;gap:26px;overflow-x:auto;scrollbar-width:none;}
.channel-nav::-webkit-scrollbar{display:none;}
.channel-nav a{
  position:relative;padding:11px 0;font-size:14.5px;color:var(--muted);white-space:nowrap;
}
.channel-nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:6px;height:2px;background:var(--accent);
  transform:scaleX(0);transform-origin:left;transition:transform var(--dur) var(--ease);
}
.channel-nav a:hover{color:var(--ink);}
.channel-nav a:hover::after{transform:scaleX(1);}
.channel-nav a.is-active{color:var(--ink);font-weight:600;}
.channel-nav a.is-active::after{transform:scaleX(1);}
.hot-tags{display:flex;align-items:center;gap:8px;overflow-x:auto;scrollbar-width:none;}
.hot-tags::-webkit-scrollbar{display:none;}
.hot-tags a{
  font-size:13px;color:var(--faint);border:1px solid var(--line);border-radius:var(--r-pill);
  padding:3px 12px;white-space:nowrap;background:#fff;
}
.hot-tags a:hover{color:var(--accent);border-color:var(--accent);}

/* ---------- buttons ---------- */
.btn-ink,.btn-ghost,.btn-accent{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),
             border-color var(--dur) var(--ease),transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.btn-ink{background:var(--ink);color:#fff;border-color:var(--ink);}
.btn-ink:hover{background:var(--accent);border-color:var(--accent);color:#fff;transform:translateY(-1px);}
.btn-ghost{background:transparent;color:var(--ink);border:1.5px solid var(--ink);}
.btn-ghost:hover{background:var(--ink);color:#fff;transform:translateY(-1px);}
.btn-accent{background:var(--accent);color:#fff;border-color:var(--accent);}
.btn-accent:hover{background:#a94715;border-color:#a94715;color:#fff;transform:translateY(-1px);}
.btn-sm{padding:9px 18px;font-size:14px;border-radius:9px;}
.btn-link-arrow{
  display:inline-flex;align-items:center;gap:8px;font-size:14.5px;font-weight:600;color:var(--ink);
  position:relative;padding-bottom:2px;
}
.btn-link-arrow::after{
  content:"";position:absolute;left:0;bottom:0;height:1px;width:100%;background:var(--ink);
  transform:scaleX(0);transform-origin:left;transition:transform var(--dur) var(--ease),background var(--dur) var(--ease);
}
.btn-link-arrow i{transition:transform var(--dur) var(--ease);}
.btn-link-arrow:hover{color:var(--accent);}
.btn-link-arrow:hover::after{transform:scaleX(1);background:var(--accent);}
.btn-link-arrow:hover i{transform:translateX(4px);}

/* ---------- hero ---------- */
.page-hero{
  position:relative;
  background:linear-gradient(180deg,rgba(246,244,240,.94),rgba(246,244,240,.99)),url("/assets/images/backpic/back-1.png") center/cover no-repeat;
  border-bottom:1px solid var(--line);
  padding:44px 0 56px;
}
.crumbs{font-size:14px;color:var(--faint);margin-bottom:22px;display:flex;flex-wrap:wrap;gap:8px;align-items:center;}
.crumbs a{color:var(--faint);}
.crumbs a:hover{color:var(--accent);}
.crumbs .sep{color:#C9C4BB;}
.crumbs .now{color:var(--text);}
.page-hero__grid{
  display:grid;grid-template-columns:repeat(12,1fr);gap:32px;align-items:center;
}
.page-hero__text{grid-column:span 7;}
.page-hero__media{grid-column:span 5;}
.badge-line{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--accent);
  border:1px solid rgba(194,85,31,.4);border-radius:var(--r-pill);padding:4px 14px;background:#fff;
  letter-spacing:.02em;margin-bottom:18px;
}
.badge-line::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);}
.page-hero h1{
  font-size:clamp(28px,4vw,44px);line-height:1.2;letter-spacing:-.02em;margin-bottom:18px;
}
.page-hero h1 span{display:block;font-size:.55em;letter-spacing:.02em;color:var(--muted);font-weight:500;margin-top:10px;font-family:var(--font-sans);}
.hero-lead{font-size:17px;color:var(--muted);max-width:620px;margin-bottom:26px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px;}
.pill-row{display:flex;flex-wrap:wrap;gap:10px;}
.pill{
  font-size:13.5px;color:var(--muted);border:1px solid var(--line);border-radius:var(--r-pill);
  padding:5px 14px;background:#fff;
}
.pill:hover{border-color:var(--accent);color:var(--accent);}
.hero-figure{
  border-radius:16px;overflow:hidden;box-shadow:var(--sh2);border:1px solid rgba(227,223,216,.9);
  background:#EFECE6;aspect-ratio:4/3;
}
.hero-figure img{width:100%;height:100%;object-fit:cover;transition:transform 420ms var(--ease);}
.hero-figure:hover img{transform:scale(1.03);}

/* ---------- anchor nav ---------- */
.anchor-bar{
  display:flex;gap:10px;overflow-x:auto;padding:20px 0;scrollbar-width:none;
  border-bottom:1px solid var(--line);
}
.anchor-bar::-webkit-scrollbar{display:none;}
.anchor-bar a{
  font-size:14px;color:var(--muted);border:1px solid var(--line);background:#fff;
  border-radius:var(--r-pill);padding:6px 16px;white-space:nowrap;
}
.anchor-bar a:hover{color:var(--accent);border-color:var(--accent);background:#fff;}

/* ---------- sections ---------- */
.section{padding:76px 0;}
.section--tight{padding:56px 0;}
.section--dark{background:var(--ink);color:#E9E6E1;}
.section--dark h2,.section--dark h3,.section--dark h4{color:#fff;}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head .eyebrow{
  font-size:13px;letter-spacing:.16em;color:var(--accent);text-transform:uppercase;
  display:block;margin-bottom:12px;font-weight:700;
}
.section-head h2{font-size:clamp(23px,3vw,34px);line-height:1.3;margin-bottom:14px;}
.section-head p{color:var(--muted);margin:0;}
.section--dark .section-head p{color:#B7B4AE;}

/* ---------- metric strip ---------- */
.metric-strip{
  display:grid;grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.metric{
  padding:30px 26px;border-left:1px solid var(--line);
}
.metric:first-child{border-left:0;}
.metric__num{
  font-family:var(--font-serif);font-size:26px;color:var(--ink);font-variant-numeric:tabular-nums;
  letter-spacing:-.01em;margin-bottom:8px;
}
.metric__num em{font-style:normal;color:var(--accent);}
.metric p{font-size:14px;color:var(--muted);margin:0;line-height:1.7;}

/* ---------- scene (alternating) ---------- */
.scene{
  display:grid;grid-template-columns:repeat(12,1fr);gap:40px;align-items:center;
  padding:52px 0;border-top:1px solid var(--line);
}
.scene:first-of-type{border-top:0;padding-top:8px;}
.scene__text{grid-column:span 6;}
.scene__media{grid-column:span 6;}
.scene.is-reverse .scene__text{order:2;}
.scene.is-reverse .scene__media{order:1;}
.scene__index{
  font-family:var(--font-sans);font-size:13px;font-weight:700;letter-spacing:.18em;
  color:var(--accent);display:block;margin-bottom:14px;
}
.scene h3{font-size:22px;line-height:1.4;margin-bottom:14px;}
.scene p{color:var(--muted);margin-bottom:16px;}
.dot-list{margin:0 0 18px;}
.dot-list li{
  position:relative;padding-left:20px;font-size:15px;color:var(--text);margin-bottom:8px;
}
.dot-list li::before{
  content:"";position:absolute;left:0;top:.72em;width:8px;height:2px;background:var(--accent);
}
.scene-figure{
  border-radius:16px;overflow:hidden;box-shadow:var(--sh2);background:#EFECE6;aspect-ratio:4/3;
}
.scene-figure img{width:100%;height:100%;object-fit:cover;transition:transform 420ms var(--ease);}
.scene-figure:hover img{transform:scale(1.03);}
.scene__tagline{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--green);
  background:rgba(46,111,99,.08);border-radius:var(--r-pill);padding:3px 12px;margin-bottom:14px;
}

/* ---------- role list (asymmetric) ---------- */
.role-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:40px;align-items:start;}
.role-main{
  grid-column:span 5;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--sh1);
}
.role-main h3{font-size:20px;margin-bottom:12px;}
.role-main p{color:var(--muted);font-size:15px;margin-bottom:0;}
.role-list{grid-column:span 7;}
.role-item{
  display:grid;grid-template-columns:56px 1fr;gap:16px;align-items:start;
  padding:20px 0;border-bottom:1px solid var(--line);transition:transform var(--dur) var(--ease);
}
.role-item:first-child{padding-top:0;}
.role-item:last-child{border-bottom:0;padding-bottom:0;}
.role-item .idx{
  font-family:var(--font-sans);font-size:15px;font-weight:700;color:var(--faint);
  font-variant-numeric:tabular-nums;transition:color var(--dur) var(--ease);
}
.role-item h4{font-size:17px;margin-bottom:6px;font-family:var(--font-sans);font-weight:700;}
.role-item p{font-size:15px;color:var(--muted);margin:0;}
.role-item:hover{transform:translateX(2px);}
.role-item:hover .idx{color:var(--accent);}

/* ---------- flow ---------- */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.flow-step{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 24px;box-shadow:var(--sh1);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.flow-step:hover{transform:translateY(-3px);box-shadow:var(--sh3);}
.flow-step .step-num{
  font-family:var(--font-serif);font-size:28px;color:var(--accent);line-height:1;margin-bottom:14px;
  font-variant-numeric:tabular-nums;
}
.flow-step h4{font-size:16.5px;margin-bottom:10px;font-family:var(--font-sans);font-weight:700;}
.flow-step p{font-size:14.5px;color:var(--muted);margin:0;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px;}
.faq-acc .accordion-item{
  background:transparent;border:0;border-bottom:1px solid var(--line);
}
.faq-acc .accordion-button{
  background:transparent;box-shadow:none;border:0;
  font-family:var(--font-serif);font-size:17.5px;font-weight:700;color:var(--ink);
  padding:22px 52px 22px 0;line-height:1.55;
}
.faq-acc .accordion-button:not(.collapsed){color:var(--accent);background:transparent;}
.faq-acc .accordion-button:focus{box-shadow:none;border:0;}
.faq-acc .accordion-button::after{
  content:"+";background-image:none!important;
  width:26px;height:26px;border-radius:50%;border:1px solid var(--line);
  display:grid;place-items:center;font-family:var(--font-sans);font-size:15px;font-weight:700;
  color:var(--muted);right:0;position:absolute;
  transition:transform var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.faq-acc .accordion-button:not(.collapsed)::after{
  content:"−";color:var(--accent);border-color:var(--accent);transform:rotate(180deg);
}
.faq-acc .accordion-body{
  padding:0 52px 24px 0;color:var(--muted);font-size:15.5px;line-height:1.85;
}

/* ---------- related cards ---------- */
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.rel-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh1);display:flex;flex-direction:column;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.rel-card:hover{transform:translateY(-3px);box-shadow:var(--sh3);border-color:#D6D0C7;}
.rel-card__media{aspect-ratio:16/9;background:#EFECE6;overflow:hidden;}
.rel-card__media img{width:100%;height:100%;object-fit:cover;transition:transform 420ms var(--ease);}
.rel-card:hover .rel-card__media img{transform:scale(1.03);}
.rel-card__body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.rel-card__tag{
  align-self:flex-start;font-size:12.5px;color:var(--muted);border:1px solid var(--line);
  border-radius:var(--r-pill);padding:2px 11px;
}
.rel-card h4{font-size:17px;line-height:1.5;font-family:var(--font-sans);font-weight:700;}
.rel-card p{font-size:14.5px;color:var(--muted);margin:0;flex:1;}
.rel-card .btn-link-arrow{font-size:14px;}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--ink);color:#E9E6E1;border-radius:var(--r-card);
  padding:52px 48px;display:grid;grid-template-columns:1.4fr 1fr;gap:36px;align-items:center;
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.6vw,30px);margin-bottom:14px;line-height:1.35;}
.cta-band p{color:#B7B4AE;margin:0;font-size:15.5px;}
.cta-band__actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end;}
.cta-band .btn-ghost{color:#fff;border-color:rgba(255,255,255,.5);}
.cta-band .btn-ghost:hover{background:#fff;color:var(--ink);border-color:#fff;}
.cta-contact{margin-top:18px;font-size:14px;color:#918E88;display:flex;gap:20px;flex-wrap:wrap;}

/* ---------- footer ---------- */
.site-footer{background:#12141A;color:#A9A6A0;margin-top:80px;padding:64px 0 28px;}
.site-footer .brand__mark{background:#fff;color:var(--ink);}
.site-footer .brand__text{color:#fff;}
.site-footer .brand__text em{color:#E08A55;}
.footer__grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.1fr;gap:36px;}
.footer__brand p{font-size:14.5px;color:#8F8C86;margin:16px 0 0;max-width:340px;}
.footer__col h4{font-family:var(--font-sans);font-size:14px;color:#fff;letter-spacing:.06em;margin-bottom:16px;font-weight:700;}
.footer__col ul li{margin-bottom:10px;font-size:14.5px;color:#8F8C86;}
.footer__col ul li a{color:#8F8C86;position:relative;}
.footer__col ul li a::after{
  content:"";position:absolute;left:0;bottom:-2px;height:1px;width:100%;background:#E08A55;
  transform:scaleX(0);transform-origin:left;transition:transform var(--dur) var(--ease);
}
.footer__col ul li a:hover{color:#fff;}
.footer__col ul li a:hover::after{transform:scaleX(1);}
.footer__contact ul li{display:flex;align-items:flex-start;gap:10px;}
.footer__contact ul li i{color:#E08A55;margin-top:5px;}
.footer__bottom{
  border-top:1px solid #262A31;margin-top:44px;padding-top:22px;
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;
  font-size:13.5px;color:#7A776F;
}

/* ---------- responsive ---------- */
@media (max-width:1200px){
  .container{padding:0 22px;}
}
@media (max-width:992px){
  .channel-bar__inner{flex-direction:column;align-items:stretch;gap:0;padding-bottom:6px;}
  .channel-nav{gap:20px;border-bottom:1px solid var(--line);}
  .hot-tags{padding:8px 0 2px;}
  .page-hero__grid{grid-template-columns:1fr;gap:28px;}
  .page-hero__text,.page-hero__media{grid-column:span 12;}
  .scene{grid-template-columns:1fr;gap:24px;padding:40px 0;}
  .scene__text,.scene__media{grid-column:span 12;}
  .scene.is-reverse .scene__text{order:1;}
  .scene.is-reverse .scene__media{order:2;}
  .role-grid{grid-template-columns:1fr;gap:26px;}
  .role-main,.role-list{grid-column:span 12;}
  .flow{grid-template-columns:repeat(2,1fr);}
  .related-grid{grid-template-columns:1fr;gap:20px;}
  .cta-band{grid-template-columns:1fr;padding:40px 30px;}
  .cta-band__actions{justify-content:flex-start;}
  .metric-strip{grid-template-columns:repeat(2,1fr);}
  .metric{border-left:1px solid var(--line);}
  .metric:nth-child(odd){border-left:0;}
  .metric:nth-child(n+3){border-top:1px solid var(--line);}
  .footer__grid{grid-template-columns:1fr 1fr;gap:30px;}
}
@media (max-width:768px){
  body{font-size:16px;}
  .section{padding:56px 0;}
  .section--tight{padding:44px 0;}
  .brand-bar__inner{height:64px;}
  .site-header.is-scrolled .brand-bar__inner{height:56px;}
  .brand__text{font-size:17px;}
  .search-wrap.is-open .search-field{width:170px;}
  .page-hero{padding:30px 0 44px;}
  .hero-lead{font-size:16px;}
  .flow{grid-template-columns:1fr;}
  .page-hero h1{font-size:clamp(24px,6vw,32px);}
  .faq-acc .accordion-button{font-size:16px;padding-right:42px;}
  .faq-acc .accordion-body{padding-right:0;}
  .footer__grid{grid-template-columns:1fr;gap:26px;}
  .site-footer{padding:48px 0 22px;}
}
@media (max-width:576px){
  .container{padding:0 16px;}
  .hero-cta{flex-direction:column;align-items:stretch;}
  .hero-cta .btn-ink,.hero-cta .btn-ghost{width:100%;}
  .cta-band__actions{flex-direction:column;align-items:stretch;}
  .cta-band__actions .btn-ink,.cta-band__actions .btn-ghost{width:100%;}
  .metric-strip{grid-template-columns:1fr;}
  .metric{border-left:0;border-top:1px solid var(--line);padding:22px 18px;}
  .metric:first-child{border-top:0;}
  .role-item{grid-template-columns:42px 1fr;gap:12px;}
  .brand-bar__actions .btn-ink{display:none;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important;}
  .hero-figure:hover img,.scene-figure:hover img,.rel-card:hover .rel-card__media img{transform:none;}
}

/* roulang page: category3 */
:root{
  --ink:#16181D;
  --accent:#C2551F;
  --green:#2E6F63;
  --paper:#F6F4F0;
  --surface:#FFFFFF;
  --line:#E3DFD8;
  --text:#1B1D21;
  --text-2:#5A5F66;
  --text-3:#8A8F96;
  --r-card:14px;
  --r-btn:10px;
  --r-pill:999px;
  --r-input:10px;
  --sh-1:0 1px 2px rgba(22,24,29,.04);
  --sh-2:0 1px 2px rgba(22,24,29,.04),0 12px 32px rgba(22,24,29,.06);
  --sh-3:0 2px 4px rgba(22,24,29,.05),0 18px 44px rgba(22,24,29,.10);
  --ease:cubic-bezier(.22,.61,.36,1);
  --dur:300ms;
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,serif;
  --sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16.5px;
  line-height:1.8;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color var(--dur) var(--ease)}
a:hover{color:var(--accent)}
button{font-family:inherit}
h1,h2,h3,h4,h5{font-family:var(--serif);color:var(--ink);margin:0;line-height:1.26;letter-spacing:-.01em;font-weight:700}
h1{font-size:clamp(30px,4.4vw,50px);line-height:1.16;letter-spacing:-.02em}
h2{font-size:clamp(24px,3.2vw,36px)}
h3{font-size:clamp(19px,2.1vw,22px)}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
::selection{background:rgba(194,85,31,.18)}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.container{max-width:1240px;margin:0 auto;padding:0 24px;width:100%}
.section{padding:88px 0}
.section--tight{padding:64px 0}
.section--paper{background:var(--paper)}
.section--white{background:var(--surface)}
.section--dark{background:var(--ink);color:#EDEAE5}
.section--dark h2,.section--dark h3{color:#fff}
.section-head{max-width:760px;margin-bottom:40px}
.section-head p{color:var(--text-2);margin-top:14px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13.5px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--accent);font-weight:600;margin-bottom:14px;
}
.eyebrow::before{content:"";width:14px;height:2px;background:var(--accent);display:inline-block}
.text-muted-2{color:var(--text-2)}
.text-weak{color:var(--text-3)}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(246,244,240,.94);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:background var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.site-header.is-stuck{background:rgba(246,244,240,.97);border-bottom-color:var(--line);box-shadow:0 6px 20px rgba(22,24,29,.05)}
.brand-bar__inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:74px;transition:height var(--dur) var(--ease)}
.site-header.is-stuck .brand-bar__inner{height:58px}
.brand{display:inline-flex;align-items:center;gap:12px;line-height:1}
.brand__mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:10px;
  background:var(--ink);color:#fff;font-family:var(--serif);
  font-weight:700;font-size:16px;letter-spacing:.04em;
  transition:transform var(--dur) var(--ease),background var(--dur) var(--ease);
}
.brand:hover .brand__mark{background:var(--accent);transform:translateY(-1px)}
.brand__text{font-family:var(--serif);font-size:19px;font-weight:700;color:var(--ink);letter-spacing:.02em}
.brand__text em{font-style:normal;color:var(--accent);font-size:15px;letter-spacing:.06em;margin-left:2px}
.brand-bar__actions{display:flex;align-items:center;gap:14px}
.search-wrap{display:flex;align-items:center;gap:0;position:relative}
.search-toggle{
  width:40px;height:40px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:var(--surface);color:var(--text-2);
  display:inline-flex;align-items:center;justify-content:center;cursor:pointer;
  transition:all var(--dur) var(--ease);
}
.search-toggle:hover{border-color:var(--ink);color:var(--ink)}
.search-field{
  width:0;opacity:0;padding:0;border:1px solid transparent;height:40px;
  border-radius:var(--r-input);background:var(--surface);margin-left:0;
  transition:width var(--dur) var(--ease),opacity var(--dur) var(--ease),margin var(--dur) var(--ease),border-color var(--dur) var(--ease);
  font-size:14.5px;color:var(--text);
}
.search-wrap.is-open .search-field{width:280px;opacity:1;margin-left:10px;padding:0 14px;border-color:var(--line)}
.search-field:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 4px rgba(194,85,31,.12)}
.btn-ink{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--ink);color:#fff;border:1.5px solid var(--ink);
  border-radius:var(--r-btn);padding:11px 22px;font-size:15px;font-weight:600;
  transition:all var(--dur) var(--ease);cursor:pointer;
}
.btn-ink:hover{background:var(--accent);border-color:var(--accent);color:#fff;transform:translateY(-1px)}
.btn-ink.btn-sm{padding:9px 18px;font-size:14.5px}
.channel-bar{border-top:1px solid var(--line);background:transparent}
.channel-bar__inner{display:flex;align-items:center;gap:28px;height:44px;transition:height var(--dur) var(--ease)}
.site-header.is-stuck .channel-bar__inner{height:40px}
.channel-nav{display:flex;align-items:center;gap:26px;flex:0 0 auto}
.channel-nav a{
  position:relative;font-size:14.5px;color:var(--text-2);padding:6px 0;white-space:nowrap;
}
.channel-nav a::after{
  content:"";position:absolute;left:0;right:100%;bottom:0;height:2px;background:var(--accent);
  transition:right var(--dur) var(--ease);
}
.channel-nav a:hover{color:var(--ink)}
.channel-nav a:hover::after{right:0}
.channel-nav a.is-active{color:var(--ink);font-weight:600}
.channel-nav a.is-active::after{right:0}
.hot-tags{display:flex;align-items:center;gap:10px;overflow-x:auto;scrollbar-width:none;flex:1 1 auto}
.hot-tags::-webkit-scrollbar{display:none}
.hot-tags a{
  font-size:13.5px;color:var(--text-3);border:1px solid var(--line);border-radius:var(--r-pill);
  padding:3px 13px;white-space:nowrap;transition:all var(--dur) var(--ease);
}
.hot-tags a:hover{color:var(--accent);border-color:var(--accent)}

/* ---------- breadcrumb ---------- */
.crumb{padding:26px 0 0;font-size:14px;color:var(--text-3)}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.crumb a{color:var(--text-3)}
.crumb a:hover{color:var(--accent)}
.crumb .sep{color:#C9C4BB}
.crumb .current{color:var(--text)}

/* ---------- hero ---------- */
.hero{position:relative;padding:34px 0 78px;overflow:hidden}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center;
  opacity:.07;pointer-events:none;
}
.hero__grid{position:relative;display:grid;grid-template-columns:1.06fr .94fr;gap:56px;align-items:center}
.hero__badge{
  display:inline-flex;align-items:center;gap:8px;font-size:13.5px;font-weight:600;
  color:var(--accent);border:1px solid rgba(194,85,31,.35);border-radius:var(--r-pill);
  padding:5px 14px;background:rgba(194,85,31,.05);margin-bottom:20px;
}
.hero h1{margin-bottom:20px}
.hero__lead{font-size:17.5px;color:var(--text-2);max-width:620px;margin-bottom:30px}
.hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px}
.btn-outline-ink{
  display:inline-flex;align-items:center;gap:8px;
  background:transparent;color:var(--ink);border:1.5px solid var(--ink);
  border-radius:var(--r-btn);padding:11px 22px;font-size:15px;font-weight:600;
  transition:all var(--dur) var(--ease);cursor:pointer;
}
.btn-outline-ink:hover{background:var(--ink);color:#fff;transform:translateY(-1px)}
.btn-text{
  display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;color:var(--ink);
  position:relative;
}
.btn-text i{transition:transform var(--dur) var(--ease);font-size:12px}
.btn-text::after{
  content:"";position:absolute;left:0;right:100%;bottom:-4px;height:1px;background:var(--accent);
  transition:right var(--dur) var(--ease);
}
.btn-text:hover{color:var(--accent)}
.btn-text:hover::after{right:0}
.btn-text:hover i{transform:translateX(4px)}
.pill-row{display:flex;flex-wrap:wrap;gap:10px}
.pill{
  font-size:13.5px;color:var(--text-2);border:1px solid var(--line);
  border-radius:var(--r-pill);padding:5px 15px;background:rgba(255,255,255,.7);
  transition:all var(--dur) var(--ease);
}
.pill:hover{color:var(--accent);border-color:var(--accent);background:#fff}
.hero__media{
  position:relative;border-radius:16px;overflow:hidden;border:1px solid rgba(255,255,255,.8);
  box-shadow:var(--sh-2);aspect-ratio:4/3;background:#EDE9E2;
}
.hero__media img{width:100%;height:100%;object-fit:cover;transition:transform 420ms var(--ease)}
.hero__media:hover img{transform:scale(1.03)}
.hero__media-tag{
  position:absolute;left:18px;bottom:18px;background:rgba(22,24,29,.86);color:#fff;
  font-size:13px;padding:7px 14px;border-radius:var(--r-pill);letter-spacing:.02em;
}

/* ---------- anchor bar ---------- */
.anchor-bar{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.anchor-bar__inner{display:flex;align-items:center;gap:14px;padding:16px 0;overflow-x:auto;scrollbar-width:none}
.anchor-bar__inner::-webkit-scrollbar{display:none}
.anchor-bar span{font-size:13.5px;color:var(--text-3);white-space:nowrap;flex:0 0 auto}
.anchor-bar a{
  flex:0 0 auto;font-size:14.5px;color:var(--text-2);border:1px solid var(--line);
  background:var(--paper);border-radius:var(--r-pill);padding:7px 18px;white-space:nowrap;
  transition:all var(--dur) var(--ease);
}
.anchor-bar a:hover{color:#fff;background:var(--ink);border-color:var(--ink)}

/* ---------- spec table ---------- */
.table-block{scroll-margin-top:120px}
.table-wrap{
  overflow-x:auto;-webkit-overflow-scrolling:touch;
  border:1px solid var(--line);border-radius:var(--r-card);background:var(--surface);
  box-shadow:var(--sh-1);
}
.spec-table{width:100%;min-width:900px;border-collapse:collapse;text-align:left}
.spec-table thead th{
  background:var(--ink);color:#fff;font-family:var(--sans);font-size:14px;font-weight:600;
  letter-spacing:.03em;padding:17px 22px;white-space:nowrap;
}
.spec-table tbody th{
  font-family:var(--serif);font-size:15.5px;font-weight:700;color:var(--ink);
  padding:18px 22px;width:186px;border-top:1px solid var(--line);background:var(--surface);vertical-align:top;
}
.spec-table tbody td{
  padding:18px 22px;font-size:15px;color:var(--text-2);border-top:1px solid var(--line);vertical-align:top;
}
.spec-table tbody tr:nth-child(even) td{background:var(--paper)}
.spec-table tbody tr:nth-child(even) th{background:var(--paper)}
.spec-table tbody tr:hover td,.spec-table tbody tr:hover th{background:#FBF8F4}
.spec-table .cell-key{color:var(--ink);font-weight:600}
.spec-table .is-featured{background:rgba(194,85,31,.06)}
.spec-table tbody tr:nth-child(even) .is-featured{background:rgba(194,85,31,.09)}
.table-note{margin-top:14px;font-size:13.5px;color:var(--text-3);display:flex;align-items:center;gap:8px}
.tag{
  display:inline-block;font-size:12.5px;line-height:1.6;padding:2px 11px;border-radius:var(--r-pill);
  border:1px solid var(--line);color:var(--text-2);background:#fff;margin:0 6px 6px 0;
}
.tag--green{color:var(--green);border-color:rgba(46,111,99,.35);background:rgba(46,111,99,.06)}
.tag--accent{color:var(--accent);border-color:rgba(194,85,31,.35);background:rgba(194,85,31,.06)}

/* ---------- feature list ---------- */
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.rule-list{border-top:1px solid var(--line)}
.rule-item{display:flex;gap:20px;padding:22px 0;border-bottom:1px solid var(--line);transition:transform var(--dur) var(--ease)}
.rule-item:hover{transform:translateX(2px)}
.rule-item__num{
  font-family:var(--serif);font-size:15px;font-weight:700;color:var(--text-3);
  flex:0 0 auto;padding-top:3px;transition:color var(--dur) var(--ease);
  font-variant-numeric:tabular-nums;
}
.rule-item:hover .rule-item__num{color:var(--accent)}
.rule-item h3{font-size:18px;margin-bottom:6px}
.rule-item p{font-size:15px;color:var(--text-2);margin:0}

.stat-strip{
  display:grid;grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.stat-strip__item{padding:34px 26px;border-right:1px solid var(--line)}
.stat-strip__item:last-child{border-right:none}
.stat-strip__num{
  font-family:var(--serif);font-size:clamp(26px,3vw,38px);font-weight:700;color:var(--ink);
  font-variant-numeric:tabular-nums;line-height:1.1;
}
.stat-strip__num em{font-style:normal;font-size:.55em;color:var(--accent);margin-left:4px}
.stat-strip__label{margin-top:10px;font-size:14px;color:var(--text-2)}

/* ---------- alternating scenes ---------- */
.scene{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;padding:44px 0}
.scene + .scene{border-top:1px solid var(--line)}
.scene__media{border-radius:16px;overflow:hidden;aspect-ratio:4/3;background:#EDE9E2;box-shadow:var(--sh-2);border:1px solid rgba(255,255,255,.7)}
.scene__media img{width:100%;height:100%;object-fit:cover;transition:transform 420ms var(--ease)}
.scene__media:hover img{transform:scale(1.03)}
.scene__body h3{margin-bottom:12px}
.scene__body p{color:var(--text-2);font-size:15.5px}
.scene--reverse .scene__media{order:2}
.scene--reverse .scene__body{order:1}

/* ---------- faq ---------- */
.faq-wrap{max-width:900px}
.accordion-item{background:transparent;border:none;border-bottom:1px solid var(--line)}
.accordion-button{
  background:transparent;border:none;box-shadow:none;
  font-family:var(--serif);font-size:18px;font-weight:700;color:var(--ink);
  padding:24px 48px 24px 0;border-radius:0;
}
.accordion-button:not(.collapsed){color:var(--accent);background:transparent;box-shadow:none}
.accordion-button:focus{box-shadow:none;outline:none}
.accordion-button::after{
  display:none;
}
.accordion-button::before{
  content:"+";position:absolute;right:6px;top:50%;transform:translateY(-50%);
  font-family:var(--sans);font-size:22px;font-weight:400;color:var(--text-3);
  transition:transform var(--dur) var(--ease),color var(--dur) var(--ease);
}
.accordion-button:not(.collapsed)::before{content:"–";color:var(--accent);transform:translateY(-50%) rotate(180deg)}
.accordion-button:hover{color:var(--accent)}
.accordion-body{padding:0 60px 26px 0;color:var(--text-2);font-size:15.5px}

/* ---------- recommend cards ---------- */
.rec-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.rec-card{
  display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.rec-card:hover{transform:translateY(-3px);box-shadow:var(--sh-3);border-color:#D6D1C8}
.rec-card__media{aspect-ratio:16/9;overflow:hidden;background:#EDE9E2}
.rec-card__media img{width:100%;height:100%;object-fit:cover;transition:transform 420ms var(--ease)}
.rec-card:hover .rec-card__media img{transform:scale(1.03)}
.rec-card__body{padding:24px 26px 26px;display:flex;flex-direction:column;gap:10px;flex:1}
.rec-card__body h3{font-size:19px}
.rec-card__body p{font-size:15px;color:var(--text-2);flex:1}
.rec-card__link{font-size:14.5px;font-weight:600;color:var(--ink);display:inline-flex;align-items:center;gap:8px}
.rec-card__link i{font-size:12px;transition:transform var(--dur) var(--ease)}
.rec-card:hover .rec-card__link{color:var(--accent)}
.rec-card:hover .rec-card__link i{transform:translateX(4px)}

/* ---------- cta ---------- */
.cta{position:relative;overflow:hidden;background:var(--ink);color:#EDEAE5;padding:84px 0}
.cta::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-3.webp");
  background-size:cover;background-position:center;opacity:.16;
}
.cta__inner{position:relative;display:grid;grid-template-columns:1.2fr .8fr;gap:48px;align-items:center}
.cta h2{color:#fff;margin-bottom:16px}
.cta p{color:rgba(237,234,229,.78);max-width:640px}
.cta__actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end}
.cta .btn-outline-ink{border-color:rgba(255,255,255,.6);color:#fff}
.cta .btn-outline-ink:hover{background:#fff;color:var(--ink);border-color:#fff}
.cta .btn-ink{background:var(--accent);border-color:var(--accent)}
.cta .btn-ink:hover{background:#fff;border-color:#fff;color:var(--ink)}

/* ---------- footer ---------- */
.site-footer{background:#101216;color:#B9B6B0;padding:70px 0 0;font-size:15px}
.footer__grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:44px;padding-bottom:48px}
.footer__brand .brand{margin-bottom:18px}
.footer__brand .brand__mark{background:#fff;color:var(--ink)}
.footer__brand .brand__text{color:#fff}
.footer__brand .brand__text em{color:var(--accent)}
.footer__brand p{color:#8E8B86;font-size:14.5px;line-height:1.9;max-width:340px}
.footer__col h4{color:#fff;font-family:var(--sans);font-size:15px;font-weight:600;letter-spacing:.04em;margin-bottom:18px}
.footer__col ul li{margin-bottom:11px}
.footer__col a{color:#B9B6B0;position:relative;display:inline-block}
.footer__col a::after{
  content:"";position:absolute;left:0;right:100%;bottom:-2px;height:1px;background:var(--accent);
  transition:right var(--dur) var(--ease);
}
.footer__col a:hover{color:#fff}
.footer__col a:hover::after{right:0}
.footer__contact li{display:flex;align-items:flex-start;gap:10px;color:#8E8B86}
.footer__contact i{margin-top:5px;color:var(--accent)}
.footer__bottom{
  border-top:1px solid rgba(255,255,255,.09);padding:22px 0 30px;
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13.5px;color:#7C7975;
}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 420ms var(--ease),transform 420ms var(--ease)}
.reveal.is-in{opacity:1;transform:none}

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

/* ---------- responsive ---------- */
@media (max-width:1399px){
  .hero__grid{gap:44px}
}
@media (max-width:1199px){
  .container{max-width:100%}
  .hero__grid{grid-template-columns:1fr .9fr;gap:36px}
  .stat-strip__item{padding:28px 20px}
}
@media (max-width:991px){
  .section{padding:68px 0}
  .section--tight{padding:52px 0}
  .channel-bar__inner{height:auto;padding:10px 0;flex-direction:column;align-items:flex-start;gap:10px}
  .site-header.is-stuck .channel-bar__inner{height:auto}
  .channel-nav{width:100%;overflow-x:auto;scrollbar-width:none;gap:22px;padding-bottom:2px}
  .channel-nav::-webkit-scrollbar{display:none}
  .hot-tags{width:100%}
  .hero{padding:26px 0 60px}
  .hero__grid{grid-template-columns:1fr;gap:34px}
  .hero__media{max-width:620px}
  .two-col{grid-template-columns:1fr;gap:32px}
  .stat-strip{grid-template-columns:repeat(2,1fr)}
  .stat-strip__item:nth-child(2){border-right:none}
  .stat-strip__item:nth-child(1),.stat-strip__item:nth-child(2){border-bottom:1px solid var(--line)}
  .scene{grid-template-columns:1fr;gap:28px;padding:34px 0}
  .scene--reverse .scene__media{order:0}
  .scene--reverse .scene__body{order:1}
  .rec-grid{grid-template-columns:1fr 1fr}
  .cta__inner{grid-template-columns:1fr;gap:30px}
  .cta__actions{justify-content:flex-start}
  .footer__grid{grid-template-columns:1fr 1fr;gap:34px}
}
@media (max-width:767px){
  body{font-size:16px}
  .container{padding:0 16px}
  .brand__text{font-size:17px}
  .brand__mark{width:36px;height:36px;font-size:14px}
  .brand-bar__inner{height:62px}
  .search-wrap.is-open .search-field{width:170px}
  .section{padding:54px 0}
  .section--tight{padding:44px 0}
  .hero__lead{font-size:16px}
  .anchor-bar a{font-size:14px;padding:6px 14px}
  .rec-grid{grid-template-columns:1fr}
  .accordion-button{font-size:16.5px;padding:20px 40px 20px 0}
  .accordion-body{padding-right:12px}
  .stat-strip{grid-template-columns:1fr}
  .stat-strip__item{border-right:none;border-bottom:1px solid var(--line);padding:24px 4px}
  .stat-strip__item:last-child{border-bottom:none}
  .footer__grid{grid-template-columns:1fr;gap:30px}
  .footer__bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:575px){
  .hero__actions{flex-direction:column;align-items:stretch}
  .hero__actions .btn-ink,.hero__actions .btn-outline-ink{width:100%;justify-content:center}
  .cta__actions{flex-direction:column;align-items:stretch}
  .cta__actions .btn-ink,.cta__actions .btn-outline-ink{width:100%;justify-content:center}
  .spec-table thead th,.spec-table tbody th,.spec-table tbody td{padding:14px 16px}
  .brand-bar__actions .btn-sm{display:none}
}

/* roulang page: category4 */
:root{
  --ink:#16181D;
  --ink-soft:#2A2D34;
  --accent:#C2551F;
  --accent-soft:rgba(194,85,31,.10);
  --green:#2E6F63;
  --paper:#F6F4F0;
  --card:#FFFFFF;
  --line:#E3DFD8;
  --text:#1B1D21;
  --text-2:#5A5F66;
  --text-3:#8A8F96;
  --r-card:14px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(22,24,29,.04),0 12px 32px rgba(22,24,29,.06);
  --sh-2:0 1px 2px rgba(22,24,29,.06),0 18px 40px rgba(22,24,29,.10);
  --ease:cubic-bezier(.22,.61,.36,1);
  --dur:.3s;
  --container:1240px;
  --gutter:24px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;line-height:1.8;color:var(--text);background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,.serif{font-family:"Noto Serif SC","Songti SC",Georgia,"Times New Roman",serif;color:var(--ink);letter-spacing:-.01em}
p{margin:0 0 1em}
a{color:inherit;text-decoration:none;transition:color var(--dur) var(--ease)}
img{max-width:100%;display:block;border:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;cursor:pointer}
input,button,textarea,select{font-family:inherit;font-size:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
::selection{background:var(--accent-soft)}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 var(--gutter)}
section[id]{scroll-margin-top:132px}

/* ---------- 头部 ---------- */
.site-header{position:sticky;top:0;z-index:1030;background:rgba(246,244,240,.88);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid transparent;transition:background var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease)}
.site-header.is-stuck{background:rgba(246,244,240,.96);border-bottom-color:var(--line);box-shadow:0 8px 24px rgba(22,24,29,.05)}
.brand-bar__inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:72px;transition:height var(--dur) var(--ease)}
.site-header.is-stuck .brand-bar__inner{height:58px}
.brand{display:inline-flex;align-items:center;gap:11px;flex-shrink:0}
.brand__mark{width:38px;height:38px;border-radius:11px;background:var(--ink);color:#fff;display:grid;place-items:center;font-size:14px;font-weight:700;letter-spacing:.04em;transition:transform var(--dur) var(--ease)}
.brand__text{font-family:"Noto Serif SC","Songti SC",Georgia,serif;font-size:20px;font-weight:700;line-height:1;color:var(--ink)}
.brand__text em{font-style:normal;color:var(--accent);margin-left:1px}
.brand:hover .brand__mark{transform:translateY(-1px)}
.brand-bar__actions{display:flex;align-items:center;gap:14px}
.search-wrap{position:relative;display:flex;align-items:center}
.search-toggle{width:40px;height:40px;border-radius:var(--r-pill);border:1px solid var(--line);background:#fff;color:var(--text-2);display:grid;place-items:center;transition:all var(--dur) var(--ease)}
.search-toggle:hover{border-color:var(--ink);color:var(--ink)}
.search-field{width:0;opacity:0;padding:0;height:40px;border:1px solid var(--line);border-radius:var(--r-pill);background:#fff;transition:width .36s var(--ease),opacity .3s var(--ease),padding .3s var(--ease);margin-left:0;color:var(--text)}
.search-wrap.is-open .search-field{width:260px;opacity:1;padding:0 18px;margin-left:10px;border-color:var(--accent);box-shadow:0 0 0 4px rgba(194,85,31,.12)}
.search-field::placeholder{color:var(--text-3)}
.btn-ink{display:inline-flex;align-items:center;justify-content:center;gap:9px;background:var(--ink);color:#fff;border:1.5px solid var(--ink);border-radius:var(--r-btn);padding:14px 26px;font-size:15px;font-weight:500;line-height:1;transition:background var(--dur) var(--ease),color var(--dur) var(--ease),transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease)}
.btn-ink:hover{background:var(--accent);border-color:var(--accent);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(194,85,31,.22)}
.btn-ink:active{transform:translateY(0)}
.btn-sm{padding:10px 20px;font-size:14px;border-radius:9px}
.btn-outline{display:inline-flex;align-items:center;justify-content:center;gap:9px;background:transparent;color:var(--ink);border:1.5px solid var(--ink);border-radius:var(--r-btn);padding:13px 25px;font-size:15px;font-weight:500;line-height:1;transition:all var(--dur) var(--ease)}
.btn-outline:hover{background:var(--ink);color:#fff;transform:translateY(-1px)}
.btn-text{display:inline-flex;align-items:center;gap:10px;font-size:14.5px;color:var(--ink);font-weight:500;position:relative;padding-bottom:2px}
.btn-text i{transition:transform var(--dur) var(--ease)}
.btn-text::after{content:"";position:absolute;left:0;bottom:0;width:100%;height:1px;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .36s var(--ease)}
.btn-text:hover{color:var(--accent)}
.btn-text:hover i{transform:translateX(4px)}
.btn-text:hover::after{transform:scaleX(1)}
.channel-bar{border-top:1px solid var(--line);transition:border-color var(--dur) var(--ease)}
.site-header.is-stuck .channel-bar{border-top-color:transparent}
.channel-bar__inner{display:flex;align-items:center;justify-content:space-between;gap:28px;min-height:44px}
.channel-nav{display:flex;align-items:center;gap:4px;flex-shrink:0}
.channel-nav a{position:relative;display:inline-block;padding:11px 15px;font-size:15px;color:var(--text-2);border-bottom:2px solid transparent;transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease)}
.channel-nav a:hover{color:var(--ink)}
.channel-nav a.is-active{color:var(--ink);font-weight:600;border-bottom-color:var(--accent)}
.hot-tags{display:flex;align-items:center;gap:8px;overflow-x:auto;scrollbar-width:none;padding:6px 0}
.hot-tags::-webkit-scrollbar{display:none}
.hot-tags a{flex:0 0 auto;font-size:13px;color:var(--text-2);border:1px solid var(--line);border-radius:var(--r-pill);padding:5px 13px;background:rgba(255,255,255,.7);transition:all var(--dur) var(--ease);white-space:nowrap}
.hot-tags a:hover{color:var(--accent);border-color:var(--accent);background:#fff}

/* ---------- 面包屑 ---------- */
.crumb{padding:24px 0 0}
.crumb__inner{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--text-3);flex-wrap:wrap}
.crumb__inner a:hover{color:var(--accent)}
.crumb__inner .sep{color:#C9C4BB}
.crumb__inner .current{color:var(--text)}

/* ---------- Hero ---------- */
.cat-hero{padding:40px 0 56px}
.cat-hero__grid{display:grid;grid-template-columns:1.04fr .96fr;gap:52px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:9px;font-size:13px;letter-spacing:.06em;color:var(--accent);border:1px solid var(--line);background:#fff;border-radius:var(--r-pill);padding:7px 15px;margin-bottom:22px}
.eyebrow i{font-size:11px}
.cat-hero h1{font-size:clamp(30px,5vw,50px);line-height:1.16;letter-spacing:-.02em;font-weight:700;margin:0 0 20px}
.cat-hero__lead{font-size:17.5px;line-height:1.85;color:var(--text-2);max-width:600px;margin-bottom:26px}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:30px}
.tag-row span{font-size:13.5px;color:var(--text-2);border:1px solid var(--line);border-radius:var(--r-pill);padding:6px 14px;background:rgba(255,255,255,.8)}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.cat-hero__figure{position:relative}
.cat-hero__figure img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:16px;box-shadow:var(--sh-1);border:1px solid rgba(255,255,255,.7)}
.cat-hero__note{position:absolute;left:-14px;bottom:26px;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:var(--sh-1);padding:14px 18px;max-width:230px}
.cat-hero__note strong{display:block;font-family:"Noto Serif SC",Georgia,serif;font-size:22px;color:var(--accent);font-variant-numeric:tabular-nums;line-height:1.2}
.cat-hero__note span{font-size:13px;color:var(--text-3)}

/* ---------- 锚点条 ---------- */
.anchor-bar{display:flex;flex-wrap:wrap;gap:10px;padding:16px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.anchor-bar a{font-size:14px;color:var(--text-2);background:#fff;border:1px solid var(--line);border-radius:var(--r-pill);padding:8px 18px;transition:all var(--dur) var(--ease)}
.anchor-bar a:hover{color:var(--accent);border-color:var(--accent);transform:translateY(-1px)}

/* ---------- 通用板块 ---------- */
.section{padding:76px 0}
.section--tight{padding:56px 0}
.section--plain{background:var(--paper)}
.section--white{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:38px}
.section-head h2{font-size:clamp(24px,3.4vw,36px);line-height:1.25;margin:0 0 14px}
.section-head p{color:var(--text-2);font-size:16.5px;margin:0}
.kicker{display:block;font-size:13px;letter-spacing:.14em;color:var(--accent);margin-bottom:12px;font-weight:600}

/* ---------- 报价构成 ---------- */
.cost-list{display:grid;grid-template-columns:repeat(2,1fr);gap:0 48px}
.cost-item{display:flex;gap:20px;padding:26px 0;border-bottom:1px solid var(--line)}
.cost-item__no{font-family:"Noto Serif SC",Georgia,serif;font-size:15px;color:var(--accent);font-weight:700;letter-spacing:.04em;padding-top:3px;transition:transform var(--dur) var(--ease)}
.cost-item:hover .cost-item__no{transform:translateX(2px)}
.cost-item h3{font-size:19px;margin:0 0 8px}
.cost-item p{margin:0;color:var(--text-2);font-size:15.5px}

/* ---------- 词条胶囊云 ---------- */
.term-cloud{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:32px}
.term-chip{border:1px solid var(--line);background:#fff;border-radius:var(--r-pill);padding:10px 20px;font-size:14.5px;color:var(--text-2);transition:all .28s var(--ease)}
.term-chip:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-1px)}
.term-chip.is-active{background:var(--ink);border-color:var(--ink);color:#fff}
.term-panel{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:30px 32px;box-shadow:var(--sh-1);min-height:168px;display:flex;flex-direction:column;justify-content:center}
.term-panel h3{font-size:21px;margin:0 0 12px}
.term-panel p{margin:0;color:var(--text-2);font-size:16px}
.term-panel.is-refresh{animation:fadeUp .42s var(--ease)}
@keyframes fadeUp{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}

/* ---------- 方案档位 ---------- */
.plan-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start}
.plan-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:30px 28px;position:relative;transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease)}
.plan-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.plan-card--rec{border-top:3px solid var(--accent);box-shadow:var(--sh-2)}
.plan-card__tag{position:absolute;top:-13px;right:24px;background:var(--accent);color:#fff;font-size:12px;letter-spacing:.06em;border-radius:var(--r-pill);padding:4px 13px}
.plan-card h3{font-size:22px;margin:0 0 6px}
.plan-card__for{font-size:14px;color:var(--text-3);margin-bottom:20px}
.plan-list{margin-bottom:22px}
.plan-list li{position:relative;padding-left:18px;font-size:15px;color:var(--text-2);padding-top:6px;padding-bottom:6px}
.plan-list li::before{content:"";position:absolute;left:0;top:15px;width:7px;height:7px;border-radius:2px;background:var(--accent-soft);border:1px solid var(--accent)}
.plan-price{border-top:1px solid var(--line);padding-top:18px;margin-bottom:20px}
.plan-price strong{font-family:"Noto Serif SC",Georgia,serif;font-size:25px;color:var(--ink);font-variant-numeric:tabular-nums;display:block;line-height:1.3}
.plan-price span{font-size:13.5px;color:var(--text-3)}
.plan-card .btn-outline,.plan-card .btn-ink{width:100%}

/* ---------- FAQ ---------- */
.faq-accordion{max-width:900px}
.faq-accordion .accordion-item{border:none;border-bottom:1px solid var(--line);background:transparent}
.faq-accordion .accordion-header{margin:0}
.faq-accordion .accordion-button{position:relative;width:100%;background:transparent;border:0;box-shadow:none;padding:24px 52px 24px 0;font-family:"Noto Serif SC","Songti SC",Georgia,serif;font-size:18.5px;line-height:1.5;color:var(--ink);text-align:left;transition:color var(--dur) var(--ease)}
.faq-accordion .accordion-button:not(.collapsed){color:var(--accent);background:transparent}
.faq-accordion .accordion-button:focus{box-shadow:none;border-color:transparent}
.faq-accordion .accordion-button:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.faq-accordion .accordion-button::after{content:"+";position:absolute;right:6px;top:50%;transform:translateY(-50%);width:auto;height:auto;background-image:none;font-size:24px;line-height:1;color:var(--accent);transition:transform .34s var(--ease);font-family:"PingFang SC",sans-serif}
.faq-accordion .accordion-button:not(.collapsed)::after{transform:translateY(-50%) rotate(45deg)}
.faq-accordion .accordion-body{padding:0 52px 26px 0;color:var(--text-2);font-size:16px;line-height:1.85}
.faq-accordion .accordion-body strong{color:var(--ink)}

/* ---------- 推荐位 ---------- */
.rec-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.rec-card{display:block;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease)}
.rec-card__media{overflow:hidden}
.rec-card__media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .42s var(--ease)}
.rec-card__body{padding:22px 24px 26px;position:relative}
.rec-card__body .chip{display:inline-block;font-size:12.5px;color:var(--accent);border:1px solid var(--line);border-radius:var(--r-pill);padding:4px 12px;margin-bottom:12px}
.rec-card h3{font-size:18.5px;line-height:1.45;margin:0 0 10px;transition:color var(--dur) var(--ease)}
.rec-card p{font-size:14.5px;color:var(--text-2);margin:0 0 16px}
.rec-card .more{font-size:14px;color:var(--ink);display:inline-flex;align-items:center;gap:8px}
.rec-card .more i{transition:transform var(--dur) var(--ease)}
.rec-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#D8D2C9}
.rec-card:hover .rec-card__media img{transform:scale(1.03)}
.rec-card:hover h3{color:var(--accent)}
.rec-card:hover .more i{transform:translateX(4px)}

/* ---------- CTA ---------- */
.cta-band{background:var(--ink);border-radius:18px;padding:56px;display:grid;grid-template-columns:1.35fr .95fr;gap:36px;align-items:center;position:relative;overflow:hidden}
.cta-band::after{content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;background:rgba(194,85,31,.16);filter:blur(6px)}
.cta-band h2{color:#fff;font-size:clamp(23px,3vw,32px);margin:0 0 14px;position:relative}
.cta-band p{color:rgba(255,255,255,.72);margin:0;font-size:16px;position:relative}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;position:relative}
.btn-light-ink{display:inline-flex;align-items:center;justify-content:center;gap:9px;background:#fff;color:var(--ink);border:1.5px solid #fff;border-radius:var(--r-btn);padding:14px 26px;font-size:15px;font-weight:500;line-height:1;transition:all var(--dur) var(--ease)}
.btn-light-ink:hover{background:var(--accent);border-color:var(--accent);color:#fff;transform:translateY(-1px)}
.btn-ghost-light{display:inline-flex;align-items:center;justify-content:center;gap:9px;background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.45);border-radius:var(--r-btn);padding:14px 26px;font-size:15px;font-weight:500;line-height:1;transition:all var(--dur) var(--ease)}
.btn-ghost-light:hover{background:#fff;color:var(--ink);border-color:#fff}
.cta-meta{display:flex;flex-wrap:wrap;gap:18px;margin-top:22px;position:relative}
.cta-meta span{font-size:14px;color:rgba(255,255,255,.7);display:inline-flex;align-items:center;gap:8px}

/* ---------- 返回入口 ---------- */
.back-links{display:flex;flex-wrap:wrap;gap:26px;padding:34px 0 0}
.back-links a{font-size:15px;color:var(--text-2);display:inline-flex;align-items:center;gap:9px}
.back-links a:hover{color:var(--accent)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.7);margin-top:80px;padding:64px 0 28px}
.footer__grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer__brand .brand__mark{background:#fff;color:var(--ink)}
.footer__brand .brand__text{color:#fff}
.footer__brand .brand__text em{color:#E0A47C}
.footer__brand p{font-size:14.5px;line-height:1.85;margin:18px 0 0;color:rgba(255,255,255,.6);max-width:330px}
.footer__col h4{color:#fff;font-size:15.5px;margin:0 0 18px;letter-spacing:.02em}
.footer__col ul li{margin-bottom:12px;font-size:14.5px}
.footer__col ul li a{position:relative;color:rgba(255,255,255,.66)}
.footer__col ul li a::after{content:"";position:absolute;left:0;bottom:-3px;width:100%;height:1px;background:#E0A47C;transform:scaleX(0);transform-origin:left;transition:transform .34s var(--ease)}
.footer__col ul li a:hover{color:#fff}
.footer__col ul li a:hover::after{transform:scaleX(1)}
.footer__contact ul li{display:flex;align-items:center;gap:10px;color:rgba(255,255,255,.66)}
.footer__contact ul li i{color:#E0A47C;width:16px;text-align:center}
.footer__bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;margin-top:52px;padding-top:24px;border-top:1px solid rgba(255,255,255,.12);font-size:13.5px;color:rgba(255,255,255,.5)}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .cat-hero__grid{gap:40px}
  .cta-band{padding:46px}
}
@media (max-width:991.98px){
  .channel-bar__inner{flex-direction:column;align-items:stretch;gap:0;padding-bottom:6px}
  .channel-nav{overflow-x:auto;scrollbar-width:none;padding:0 var(--gutter)}
  .channel-nav::-webkit-scrollbar{display:none}
  .channel-nav a{white-space:nowrap;padding:10px 13px}
  .hot-tags{padding:0 var(--gutter) 6px}
  .cat-hero__grid{grid-template-columns:1fr;gap:36px}
  .cat-hero{padding:32px 0 44px}
  .cat-hero__note{position:static;margin-top:16px;max-width:none;display:flex;align-items:center;gap:14px}
  .cost-list{grid-template-columns:1fr;gap:0}
  .plan-grid{grid-template-columns:1fr;gap:20px}
  .plan-card--rec{transform:none}
  .rec-grid{grid-template-columns:1fr 1fr}
  .cta-band{grid-template-columns:1fr;padding:40px 32px}
  .footer__grid{grid-template-columns:1fr 1fr;gap:34px}
  .search-wrap.is-open .search-field{width:200px}
}
@media (max-width:767.98px){
  body{font-size:15.5px}
  .section{padding:56px 0}
  .section--tight{padding:44px 0}
  .rec-grid{grid-template-columns:1fr}
  .brand-bar__inner{height:64px}
  .brand__text{font-size:18px}
  .term-panel{padding:24px 22px}
  .faq-accordion .accordion-button{font-size:17px;padding:20px 44px 20px 0}
  .faq-accordion .accordion-body{padding:0 20px 22px 0}
  .cta-band{padding:32px 24px;border-radius:16px}
  .footer__grid{grid-template-columns:1fr}
  .site-footer{padding:52px 0 24px;margin-top:56px}
}
@media (max-width:575.98px){
  :root{--gutter:16px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn-ink,.hero-actions .btn-outline{width:100%}
  .cta-actions{flex-direction:column;align-items:stretch}
  .cta-actions a{width:100%}
  .search-wrap.is-open .search-field{width:150px}
  .cat-hero h1{font-size:30px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}