/* roulang page: index */
:root{
  --ink-green:#123B32;
  --ink-green-dark:#0C2A23;
  --block-dark:#10231D;
  --orange:#E25822;
  --orange-dark:#C44716;
  --orange-soft:#FBE9E0;
  --bronze:#B98A3C;
  --paper:#F7F4EC;
  --card:#FFFFFF;
  --green-grey:#EEF2ED;
  --text:#1B211E;
  --text-2:#5F6B64;
  --text-3:#8A948D;
  --line:#DED7C8;
  --line-strong:#C9C0AC;
  --danger:#C0392B;
  --success:#2F6B4F;
  --radius-s:8px;
  --radius-m:12px;
  --radius-l:18px;
  --radius-xl:24px;
  --shadow-s:0 1px 2px rgba(16,35,29,.06);
  --shadow-m:0 10px 30px rgba(16,35,29,.08);
  --shadow-l:0 24px 60px rgba(16,35,29,.12);
  --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;font-family:var(--font-sans);font-size:16.5px;line-height:1.9;color:var(--text);background:var(--paper);-webkit-font-smoothing:antialiased}
h1,h2,h3,h4{font-family:var(--font-serif);margin:0;line-height:1.25;color:var(--ink-green-dark);font-weight:700}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
a{color:var(--ink-green);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--orange-dark)}
img{display:block;max-width:100%;height:auto}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;color:inherit}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(226,88,34,.35);border-radius:6px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.skip-link{position:absolute;left:16px;top:-60px;z-index:200;background:var(--ink-green);color:var(--paper);padding:10px 18px;border-radius:0 0 10px 10px;font-size:14px;transition:top .2s ease}
.skip-link:focus{top:0;color:var(--paper)}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}

/* ---------- 头部导航 ---------- */
.site-header{position:sticky;top:0;z-index:80;background:var(--paper);padding:14px 0 12px;transition:box-shadow .2s ease}
.site-header.is-stuck{box-shadow:0 14px 28px rgba(16,35,29,.09)}
.nav-shell{display:flex;align-items:center;gap:18px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius-l);box-shadow:var(--shadow-m);padding:12px 16px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand__seal{width:40px;height:40px;border-radius:11px;background:var(--ink-green);color:var(--paper);display:grid;place-items:center;font-family:var(--font-serif);font-size:19px;font-weight:700;box-shadow:inset 0 0 0 2px rgba(185,138,60,.45);flex:0 0 auto}
.brand__text{font-family:var(--font-serif);font-size:19px;font-weight:700;color:var(--ink-green-dark);letter-spacing:.02em;white-space:nowrap}
.brand:hover .brand__text{color:var(--orange-dark)}
.nav-cards{display:flex;align-items:center;gap:6px;flex:1 1 auto;justify-content:center;min-width:0}
.nav-card{display:inline-flex;align-items:center;gap:7px;padding:9px 12px;border-radius:10px;border:1px solid transparent;font-size:14px;color:var(--text-2);font-weight:500;white-space:nowrap;transition:background .18s ease,color .18s ease,border-color .18s ease}
.nav-card svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.nav-card:hover{background:var(--green-grey);color:var(--ink-green);border-color:var(--line)}
.nav-card.is-active{background:var(--green-grey);color:var(--ink-green-dark);font-weight:600;border-color:var(--line);box-shadow:inset 0 3px 0 0 var(--orange)}
.nav-cta{flex:0 0 auto}
.nav-toggle{display:none;margin-left:auto;width:44px;height:44px;border-radius:11px;border:1px solid var(--line);background:var(--card);align-items:center;justify-content:center;cursor:pointer;transition:background .18s ease,border-color .18s ease}
.nav-toggle:hover{background:var(--green-grey);border-color:var(--line-strong)}
.nav-toggle svg{width:22px;height:22px;stroke:var(--ink-green);fill:none;stroke-width:1.8;stroke-linecap:round}
.mobile-nav{display:none;margin-top:10px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius-l);box-shadow:var(--shadow-m);padding:14px;grid-template-columns:1fr 1fr;gap:10px}
.mobile-nav.is-open{display:grid}
.m-nav-card{display:flex;align-items:center;gap:8px;padding:12px 14px;border-radius:11px;border:1px solid var(--line);font-size:14.5px;color:var(--text-2);background:var(--paper);transition:background .18s ease,border-color .18s ease,color .18s ease}
.m-nav-card svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;flex:0 0 auto}
.m-nav-card:hover{border-color:var(--line-strong);color:var(--ink-green)}
.m-nav-card.is-active{background:var(--green-grey);color:var(--ink-green-dark);font-weight:600;border-color:var(--ink-green)}
.mobile-nav__cta{grid-column:1/-1;width:100%}

/* ---------- 按钮与标签 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 22px;border-radius:11px;border:1px solid transparent;font-size:15px;font-weight:600;cursor:pointer;transition:transform .18s ease,background .18s ease,border-color .18s ease,color .18s ease,box-shadow .18s ease}
.btn--primary{background:var(--orange);color:#fff;box-shadow:0 6px 16px rgba(226,88,34,.22)}
.btn--primary:hover{background:var(--orange-dark);color:#fff;transform:translateY(-2px);box-shadow:0 10px 22px rgba(226,88,34,.28)}
.btn--primary:active{transform:scale(.98)}
.btn--ghost{background:var(--card);border-color:var(--ink-green);color:var(--ink-green)}
.btn--ghost:hover{background:var(--green-grey);color:var(--ink-green);transform:translateY(-2px)}
.btn--ghost:active{transform:scale(.98)}
.btn--light{background:transparent;border-color:rgba(247,244,236,.5);color:var(--paper)}
.btn--light:hover{background:rgba(247,244,236,.12);border-color:var(--paper);color:var(--paper)}
.btn[disabled]{opacity:.4;cursor:not-allowed;transform:none!important}
.btn-row{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--ink-green);border-bottom:1px solid rgba(18,59,50,.28);padding-bottom:2px;transition:color .18s ease,border-color .18s ease}
.link-arrow:hover{color:var(--orange-dark);border-bottom-color:var(--orange)}
.link-arrow svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;transition:transform .18s ease}
.link-arrow:hover svg{transform:translateX(4px)}
.badge{display:inline-flex;align-items:center;background:var(--orange-soft);color:var(--orange-dark);font-size:12.5px;font-weight:600;padding:4px 10px;border-radius:6px;letter-spacing:.02em}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.12em;color:var(--orange);margin-bottom:14px}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--orange);display:inline-block}

/* ---------- Hero ---------- */
.hero{padding:54px 0 82px;position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;left:50%;top:-180px;width:900px;height:520px;transform:translateX(-50%);background:radial-gradient(closest-side,rgba(18,59,50,.07),transparent);pointer-events:none}
.hero__grid{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:52px;align-items:center}
.hero__title{font-size:clamp(30px,4vw,50px);line-height:1.16;letter-spacing:-.012em;margin:0 0 18px}
.hero__sub{font-size:17px;color:var(--text-2);max-width:520px;margin:0 0 28px;line-height:1.9}
.hero-points{display:grid;gap:10px;margin-top:32px}
.hero-points li{display:flex;align-items:flex-start;gap:10px;font-size:14.5px;color:var(--text-2);line-height:1.75}
.hero-points svg{flex:0 0 auto;width:18px;height:18px;margin-top:4px;stroke:var(--ink-green);fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.hero-media{position:relative;min-width:0}
.hero-media::before{content:"";position:absolute;inset:0;border:1px solid var(--ink-green);border-radius:var(--radius-xl);transform:translate(14px,14px);opacity:.55;pointer-events:none}
.hero-media__frame{position:relative;border-radius:var(--radius-xl);overflow:hidden;box-shadow:var(--shadow-l);background:var(--ink-green)}
.hero-media__frame img{width:100%;aspect-ratio:16/10;object-fit:cover}
.hero-float{position:absolute;right:16px;bottom:16px;width:212px;background:rgba(255,255,255,.97);border:1px solid var(--line);border-radius:var(--radius-m);padding:14px 16px;box-shadow:var(--shadow-m)}
.hero-float__title{display:block;font-size:12.5px;color:var(--text-3);letter-spacing:.06em;margin-bottom:8px}
.hero-float__list{display:grid;gap:6px}
.hero-float__list li{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--ink-green-dark);font-weight:500}
.hero-float__list span{font-family:var(--font-serif);font-size:12.5px;color:var(--bronze);font-weight:700}

/* ---------- 区块通用 ---------- */
.section{padding:88px 0}
.section--tight{padding:64px 0}
.section--tint{background:var(--green-grey)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;margin-bottom:36px;flex-wrap:wrap}
.section-head h2{font-size:clamp(24px,2.6vw,32px)}
.section-head .lead{margin:10px 0 0;font-size:15px;color:var(--text-2);line-height:1.8;max-width:640px}

/* ---------- 主题封面 ---------- */
.cover-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.cover-card{display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);border-radius:var(--radius-l);box-shadow:var(--shadow-s);overflow:hidden;transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;color:var(--text)}
.cover-card:hover{transform:translateY(-3px);border-color:var(--ink-green);box-shadow:var(--shadow-m);color:var(--text)}
.cover-card__media{position:relative;overflow:hidden;background:var(--block-dark)}
.cover-card__media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .35s ease}
.cover-card:hover .cover-card__media img{transform:scale(1.03)}
.cover-card__num{position:absolute;left:12px;top:12px;background:rgba(18,59,50,.9);color:var(--paper);font-family:var(--font-serif);font-size:13px;font-weight:700;letter-spacing:.08em;padding:4px 9px;border-radius:6px}
.cover-card__body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:8px}
.cover-card__body h3{font-size:19px}
.cover-card__body p{font-size:14px;color:var(--text-2);line-height:1.75;margin:0}
.cover-card__count{margin-top:auto;padding-top:10px;font-size:13px;color:var(--text-3);border-top:1px solid var(--line)}

/* ---------- 合集目录 ---------- */
.catalog{display:grid;grid-template-columns:118px 1fr;background:var(--card);border:1px solid var(--line);border-radius:var(--radius-l);box-shadow:var(--shadow-m);overflow:hidden}
.catalog__label{background:var(--green-grey);display:grid;place-items:center;border-right:1px solid var(--line);padding:20px 0}
.catalog__label span{writing-mode:vertical-rl;letter-spacing:.4em;font-family:var(--font-serif);font-size:18px;color:var(--ink-green);font-weight:700}
.catalog__rows{display:grid;grid-template-columns:1fr 1fr}
.catalog-row{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:14px;padding:20px 22px;border-bottom:1px solid var(--line);color:var(--text);transition:background .18s ease}
.catalog-row:hover{background:var(--green-grey);color:var(--text)}
.catalog-row__num{font-family:var(--font-serif);font-size:26px;font-weight:700;color:var(--bronze);line-height:1;transition:color .18s ease}
.catalog-row:hover .catalog-row__num{color:var(--orange)}
.catalog-row__main{min-width:0}
.catalog-row__title{display:block;font-size:17.5px;font-weight:600;color:var(--ink-green-dark);margin-bottom:6px}
.catalog-row__tags{display:flex;flex-wrap:wrap;gap:6px}
.catalog-row__tags span{font-size:12.5px;color:var(--text-2);background:var(--paper);border:1px solid var(--line);border-radius:5px;padding:2px 8px}
.catalog-row__arrow{width:18px;height:18px;stroke:var(--ink-green);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;transition:transform .18s ease}
.catalog-row:hover .catalog-row__arrow{transform:translateX(4px);stroke:var(--orange)}

/* ---------- 精选条目 ---------- */
.pick-grid{display:grid;grid-template-columns:7fr 5fr;gap:24px;align-items:stretch}
.pick-main{display:grid;grid-template-columns:1fr 1fr;background:var(--card);border:1px solid var(--line);border-radius:var(--radius-l);box-shadow:var(--shadow-s);overflow:hidden;transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;color:var(--text)}
.pick-main:hover{transform:translateY(-3px);border-color:var(--ink-green);box-shadow:var(--shadow-m);color:var(--text)}
.pick-main__media{position:relative;overflow:hidden;min-height:280px;background:var(--block-dark)}
.pick-main__media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.pick-main:hover .pick-main__media img{transform:scale(1.03)}
.pick-main__body{padding:28px 26px;display:flex;flex-direction:column;gap:12px}
.pick-main__body h3{font-size:22px;line-height:1.4}
.pick-main__body p{font-size:14.5px;color:var(--text-2);line-height:1.85;margin:0}
.pick-main__body .link-arrow{margin-top:auto;align-self:flex-start}
.pick-side{display:grid;gap:12px;align-content:stretch}
.pick-row{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:12px;padding:16px 18px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius-m);box-shadow:var(--shadow-s);color:var(--text);transition:border-color .18s ease,background .18s ease,transform .18s ease}
.pick-row:hover{border-color:var(--ink-green);background:var(--green-grey);transform:translateX(3px);color:var(--text)}
.pick-row__cat{font-size:12.5px;color:var(--orange-dark);background:var(--orange-soft);padding:3px 9px;border-radius:5px;white-space:nowrap}
.pick-row__title{font-size:15px;font-weight:600;color:var(--ink-green-dark);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.pick-row__arrow{width:17px;height:17px;stroke:var(--ink-green);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.pick-row:hover .pick-row__arrow{stroke:var(--orange)}

/* ---------- 最新信息 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{display:flex;flex-direction:column;gap:12px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius-l);box-shadow:var(--shadow-s);padding:24px;transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}
.news-card:hover{transform:translateY(-3px);border-color:var(--ink-green);box-shadow:var(--shadow-m)}
.news-card__top{display:flex;align-items:center;justify-content:space-between;gap:12px}
.news-card__idx{font-family:var(--font-serif);font-size:20px;font-weight:700;color:var(--bronze);opacity:.85}
.news-card__title{font-size:19px;line-height:1.5;margin:0}
.news-card__title a{color:var(--ink-green-dark)}
.news-card__title a:hover{color:var(--orange-dark)}
.news-card__excerpt{font-size:14.5px;color:var(--text-2);line-height:1.85;margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card__meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:14px;border-top:1px solid var(--line);font-size:13px;color:var(--text-3)}
.news-card__meta .link-arrow{font-size:13.5px}
.empty-state{border:1px dashed var(--line-strong);border-radius:var(--radius-l);padding:56px 24px;text-align:center;background:var(--card)}
.empty-state svg{width:42px;height:42px;stroke:var(--line-strong);fill:none;stroke-width:1.4;margin:0 auto 14px;stroke-linecap:round;stroke-linejoin:round}
.empty-state p{margin:0;font-size:15px;color:var(--text-3)}

/* ---------- 相关推荐 ---------- */
.rec-list{display:grid;gap:12px}
.rec-row{display:grid;grid-template-columns:112px 1fr auto;align-items:center;gap:18px;padding:18px 22px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius-m);box-shadow:var(--shadow-s);color:var(--text);transition:border-color .18s ease,background .18s ease,transform .18s ease}
.rec-row:hover{border-color:var(--ink-green);background:#fff;transform:translateX(4px);color:var(--text)}
.rec-row__cat{font-size:13px;font-weight:600;color:var(--ink-green);letter-spacing:.02em}
.rec-row__title{font-size:16px;font-weight:500;color:var(--ink-green-dark)}
.rec-row__arrow{width:18px;height:18px;stroke:var(--ink-green);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;transition:transform .18s ease}
.rec-row:hover .rec-row__arrow{transform:translateX(4px);stroke:var(--orange)}

/* ---------- CTA ---------- */
.cta-card{position:relative;overflow:hidden;display:flex;align-items:center;justify-content:space-between;gap:32px;background:linear-gradient(135deg,#123B32 0%,#0C2A23 72%);color:var(--paper);border-radius:var(--radius-xl);padding:42px 44px;box-shadow:var(--shadow-l)}
.cta-card::after{content:"";position:absolute;right:-70px;top:-70px;width:240px;height:240px;border-radius:50%;border:1px solid rgba(185,138,60,.4);pointer-events:none}
.cta-card h2{color:var(--paper);font-size:clamp(22px,2.4vw,28px);margin:0 0 10px}
.cta-card p{margin:0;font-size:14.5px;color:rgba(247,244,236,.76);line-height:1.85;max-width:460px}
.cta-card__actions{display:flex;gap:12px;flex:0 0 auto;position:relative;z-index:1}
.cta-hint{margin-top:14px;font-size:13.5px;color:var(--success);min-height:20px}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:4px 40px}
.faq-item{border-bottom:1px solid var(--line);padding:2px 0}
.faq-q{display:flex;width:100%;align-items:center;justify-content:space-between;gap:16px;background:none;border:0;padding:18px 0;text-align:left;font-family:var(--font-sans);font-size:17px;font-weight:600;line-height:1.6;color:var(--ink-green-dark);cursor:pointer;transition:color .18s ease}
.faq-q:hover{color:var(--orange-dark)}
.faq-icon{position:relative;flex:0 0 auto;width:22px;height:22px}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--orange);border-radius:2px;transition:transform .18s ease,opacity .18s ease}
.faq-icon::before{left:3px;right:3px;top:10px;height:2px}
.faq-icon::after{top:3px;bottom:3px;left:10px;width:2px}
.faq-item.is-open .faq-icon::after{transform:scaleY(0);opacity:0}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .18s ease}
.faq-a>div{overflow:hidden}
.faq-a p{margin:0;padding:0 0 20px;font-size:15px;line-height:1.9;color:var(--text-2)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-green-dark);color:var(--paper);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;padding-bottom:44px}
.footer-brand__name{display:block;font-family:var(--font-serif);font-size:20px;font-weight:700;color:var(--paper);margin-bottom:14px}
.footer-brand p{font-size:14px;line-height:1.9;color:rgba(247,244,236,.72);margin:0;max-width:290px}
.footer-col h4{font-family:var(--font-sans);font-size:14px;font-weight:600;color:var(--bronze);letter-spacing:.06em;margin:0 0 14px}
.footer-col li{margin-bottom:2px}
.footer-col a{display:inline-block;font-size:14px;line-height:2;color:rgba(247,244,236,.78);border-bottom:1px solid transparent;transition:color .18s ease,border-color .18s ease}
.footer-col a:hover{color:var(--orange);border-bottom-color:var(--orange)}
.footer-bottom{border-top:1px solid rgba(247,244,236,.16);padding:20px 0 30px;display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:space-between}
.footer-bottom p{margin:0;font-size:13px;color:rgba(247,244,236,.58);line-height:1.8}

/* ---------- 响应式 ---------- */
@media (max-width:1100px){
  .nav-card{padding:8px 9px;font-size:13.5px;gap:6px}
  .brand__text{font-size:17px}
}
@media (max-width:1024px){
  .hero__grid{grid-template-columns:1fr;gap:40px}
  .hero-media{max-width:660px}
  .cover-grid{grid-template-columns:repeat(2,1fr)}
  .pick-grid{grid-template-columns:1fr}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .catalog{grid-template-columns:1fr}
  .catalog__label{writing-mode:horizontal-tb;padding:14px 20px;border-right:0;border-bottom:1px solid var(--line);justify-items:start;display:block}
  .catalog__label span{writing-mode:horizontal-tb;letter-spacing:.2em;font-size:15px}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:992px){
  .nav-cards,.nav-cta{display:none}
  .nav-toggle{display:inline-flex}
  .nav-shell{padding:10px 14px}
  .faq-grid{grid-template-columns:1fr}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .section{padding:64px 0}
  .section--tight{padding:48px 0}
  .hero{padding:34px 0 56px}
  .cover-grid{grid-template-columns:1fr 1fr}
  .news-grid{grid-template-columns:1fr}
  .catalog__rows{grid-template-columns:1fr}
  .pick-main{grid-template-columns:1fr}
  .pick-main__media{min-height:220px}
  .cta-card{flex-direction:column;align-items:flex-start;padding:32px 26px;gap:22px}
  .cta-card__actions{width:100%}
  .rec-row{grid-template-columns:96px 1fr auto;gap:12px;padding:16px 18px}
}
@media (max-width:560px){
  .container{padding:0 16px}
  .section{padding:44px 0}
  .brand__text{font-size:16px}
  .brand__seal{width:36px;height:36px;font-size:17px}
  .cover-grid{grid-template-columns:1fr}
  .hero__title{font-size:30px}
  .hero__sub{font-size:16px}
  .btn-row{width:100%}
  .btn-row .btn{flex:1 1 100%}
  .hero-float{position:static;width:100%;margin-top:16px}
  .hero-media::before{display:none}
  .news-card{padding:20px}
  .cta-card__actions{flex-direction:column}
  .cta-card__actions .btn{width:100%}
  .rec-row{grid-template-columns:1fr auto;gap:8px}
  .rec-row__cat{grid-column:1/-1}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column}
  .pick-row{grid-template-columns:1fr auto}
  .pick-row__cat{grid-column:1/-1}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.01ms!important;animation-duration:.01ms!important;scroll-behavior:auto!important}
}

/* roulang page: article */
:root{
  --green:#123B32;
  --green-dark:#0C2A23;
  --green-deep:#10231D;
  --accent:#E25822;
  --accent-dark:#C44716;
  --accent-deep:#A93B12;
  --accent-soft:#FBE9E0;
  --gold:#B98A3C;
  --paper:#F7F4EC;
  --white:#FFFFFF;
  --green-soft:#EEF2ED;
  --ink:#1B211E;
  --ink-2:#5F6B64;
  --ink-3:#8A948D;
  --line:#DED7C8;
  --line-strong:#C9C0AC;
  --error:#C0392B;
  --success:#2F6B4F;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:18px;
  --r-xl:24px;
  --sh-sm:0 1px 2px rgba(16,35,29,.06);
  --sh-md:0 10px 30px rgba(16,35,29,.08);
  --sh-lg:0 24px 60px rgba(16,35,29,.12);
  --container:1240px;
  --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,sans-serif;
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",SimSun,serif;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.9;
  color:var(--ink);
  background-color:var(--paper);
  background-image:radial-gradient(rgba(18,59,50,.045) 1px, transparent 1px);
  background-size:22px 22px;
  text-align:left;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--green);text-decoration:none;transition:color .18s var(--ease);}
a:hover{color:var(--accent-dark);}
button,input,textarea,select{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.25;color:var(--ink);}
p{margin:0 0 1.1em;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:3px solid rgba(226,88,34,.4);outline-offset:2px;border-radius:6px;}
.skip-link{
  position:absolute;left:16px;top:-60px;z-index:300;background:var(--green-dark);color:var(--paper);
  padding:10px 18px;border-radius:0 0 var(--r-md) var(--r-md);font-size:14px;transition:top .2s var(--ease);
}
.skip-link:focus{top:0;color:var(--paper);}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:88px 0;}
.section--tight{padding:56px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;flex-wrap:wrap;}
.section-head h2{font-family:var(--font-serif);font-size:32px;letter-spacing:.01em;}
.section-head .sub{font-size:14px;color:var(--ink-2);margin:6px 0 0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.14em;
  color:var(--accent-dark);text-transform:uppercase;font-weight:600;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--accent);display:inline-block;}

/* ---------- 顶部导航 ---------- */
.site-header{position:sticky;top:0;z-index:80;padding:16px 0 0;}
.nav-panel{
  position:relative;display:flex;align-items:center;gap:18px;
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:12px 16px;box-shadow:var(--sh-md);transition:box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.site-header.is-stuck .nav-panel{box-shadow:var(--sh-lg);border-color:var(--line-strong);}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:36px;height:36px;border-radius:var(--r-sm);background:var(--green);color:var(--paper);
  display:inline-flex;align-items:center;justify-content:center;font-family:var(--font-serif);
  font-size:18px;font-weight:700;box-shadow:inset 0 0 0 1px rgba(185,138,60,.55);
}
.brand-name{font-family:var(--font-serif);font-size:17px;font-weight:700;color:var(--green-dark);letter-spacing:.01em;white-space:nowrap;}
.brand:hover .brand-name{color:var(--accent-dark);}
.nav-cards{display:flex;align-items:center;gap:6px;flex:1 1 auto;justify-content:center;flex-wrap:nowrap;}
.nav-card{
  display:inline-flex;align-items:center;gap:7px;padding:9px 12px;border-radius:10px;
  font-size:14px;color:var(--ink-2);border:1px solid transparent;white-space:nowrap;
  transition:background-color .18s var(--ease),color .18s var(--ease),box-shadow .18s var(--ease);
}
.nav-card svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;flex:0 0 auto;}
.nav-card:hover{background:var(--green-soft);color:var(--green);}
.nav-card.is-active{background:var(--accent-soft);color:var(--accent-dark);box-shadow:inset 0 3px 0 var(--accent);font-weight:600;}
.nav-tools{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);
  background:var(--white);align-items:center;justify-content:center;color:var(--green);
}
.nav-toggle svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:11px;font-size:15px;font-weight:600;
  border:1px solid transparent;text-decoration:none;white-space:nowrap;
  transition:transform .18s var(--ease),background-color .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease),color .18s var(--ease);
}
.btn svg{width:17px;height:17px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;}
.btn--primary{background:var(--accent-dark);color:var(--white);}
.btn--primary:hover{background:var(--accent-deep);color:var(--white);transform:translateY(-2px);box-shadow:0 12px 24px rgba(196,71,22,.28);}
.btn--primary:active{transform:scale(.98);}
.btn--secondary{background:var(--white);border-color:var(--green);color:var(--green);}
.btn--secondary:hover{background:var(--green-soft);color:var(--green-dark);}
.btn--ghost{background:transparent;border-color:rgba(247,244,236,.45);color:var(--paper);}
.btn--ghost:hover{background:rgba(247,244,236,.14);border-color:var(--paper);color:var(--paper);}
.btn--sm{height:38px;padding:0 16px;font-size:14px;border-radius:9px;}
.btn--link{background:none;border:0;height:auto;padding:0;color:var(--green);text-decoration:underline;text-underline-offset:4px;font-weight:600;gap:6px;}
.btn--link:hover{color:var(--accent-dark);}
.btn--link:hover svg{transform:translateX(4px);}
.btn--link svg{transition:transform .18s var(--ease);}

/* ---------- 面包屑 ---------- */
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;flex-wrap:wrap;color:rgba(247,244,236,.72);}
.breadcrumb a{color:rgba(247,244,236,.82);}
.breadcrumb a:hover{color:var(--white);text-decoration:underline;text-underline-offset:3px;}
.breadcrumb .sep{color:rgba(247,244,236,.4);}
.breadcrumb .current{color:var(--white);font-weight:600;max-width:min(60vw,520px);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ---------- 文章头部 ---------- */
.article-hero{
  position:relative;margin-top:16px;padding:52px 0 56px;color:var(--paper);
  background:var(--green-deep) url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
  border-radius:var(--r-xl);overflow:hidden;
}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(160deg,rgba(12,42,35,.9),rgba(16,35,29,.96));
}
.article-hero .container{position:relative;z-index:2;}
.article-hero__inner{max-width:900px;margin-top:26px;}
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:6px 12px;border-radius:6px;
  background:var(--accent-soft);color:var(--accent-deep);font-size:12.5px;font-weight:700;letter-spacing:.03em;
}
.badge--line{background:transparent;border:1px solid rgba(185,138,60,.7);color:var(--gold);}
.article-hero h1{
  margin:16px 0 0;font-family:var(--font-serif);font-size:48px;line-height:1.18;color:var(--paper);
  letter-spacing:.01em;overflow-wrap:break-word;
}
.article-hero__lead{
  margin:18px 0 0;max-width:720px;font-size:16.5px;line-height:1.85;color:rgba(247,244,236,.82);
}
.meta-bar{
  display:flex;align-items:center;gap:18px;flex-wrap:wrap;margin-top:26px;
  padding-top:22px;border-top:1px solid rgba(247,244,236,.16);
}
.meta-bar .meta-item{display:inline-flex;align-items:center;gap:7px;font-size:13.5px;color:rgba(247,244,236,.76);}
.meta-bar .meta-item svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;}
.meta-bar .meta-item strong{color:var(--paper);font-weight:600;}
.meta-actions{margin-left:auto;display:flex;align-items:center;gap:10px;flex-wrap:wrap;}

/* ---------- 文章封面 ---------- */
.article-cover-wrap{padding:0 0 8px;}
.article-cover{max-width:1000px;margin:0 auto;}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-lg);border:1px solid var(--line);box-shadow:var(--sh-md);}
.article-cover figcaption{margin-top:12px;font-size:13px;color:var(--ink-3);line-height:1.7;}

/* ---------- 正文布局 ---------- */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:36px;align-items:start;
}
.article-main{max-width:780px;min-width:0;}
.article-body{font-size:17px;line-height:1.95;color:var(--ink);overflow-wrap:break-word;}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 1.15em;}
.article-body h2{
  font-family:var(--font-serif);font-size:26px;line-height:1.35;margin:2.1em 0 .85em;
  padding-left:16px;border-left:4px solid var(--accent);scroll-margin-top:120px;
}
.article-body h3{
  font-size:20px;line-height:1.45;margin:1.8em 0 .7em;scroll-margin-top:120px;
  color:var(--green-dark);
}
.article-body h4{font-size:17px;margin:1.5em 0 .6em;color:var(--green-dark);}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.35em;}
.article-body ul{list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin-bottom:.5em;line-height:1.9;}
.article-body li::marker{color:var(--accent);}
.article-body a{color:var(--accent-dark);text-decoration:underline;text-underline-offset:4px;}
.article-body a:hover{color:var(--accent-deep);}
.article-body img{border-radius:var(--r-md);margin:1.4em 0;border:1px solid var(--line);}
.article-body figure{margin:1.6em 0;}
.article-body figcaption{font-size:13px;color:var(--ink-3);text-align:center;margin-top:10px;}
.article-body blockquote{
  margin:1.6em 0;padding:16px 22px;border-left:4px solid var(--green);
  background:var(--green-soft);border-radius:0 var(--r-md) var(--r-md) 0;color:var(--ink-2);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px;}
.article-body th,.article-body td{border:1px solid var(--line);padding:11px 14px;text-align:left;line-height:1.7;}
.article-body th{background:var(--green-soft);color:var(--green-dark);font-weight:600;}
.article-body tr:nth-child(even) td{background:#FBFAF6;}
.article-body code{background:var(--green-soft);padding:2px 6px;border-radius:5px;font-size:14.5px;}
.article-body .tip,.article-body .note{
  border-radius:var(--r-md);padding:14px 18px;margin:1.5em 0;font-size:15.5px;line-height:1.85;
  background:var(--accent-soft);color:#8A3A14;border-left:4px solid var(--accent);
}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.4em 0;}

/* ---------- 空状态 ---------- */
.empty-state{
  border:1px dashed var(--line-strong);border-radius:var(--r-lg);background:var(--white);
  padding:56px 24px;text-align:center;
}
.empty-state svg{width:46px;height:46px;margin:0 auto 16px;fill:none;stroke:var(--ink-3);stroke-width:1.4;stroke-linecap:round;stroke-linejoin:round;}
.empty-state p{font-size:16px;color:var(--ink-2);margin-bottom:20px;}

/* ---------- 侧栏 ---------- */
.article-aside{display:flex;flex-direction:column;gap:20px;position:sticky;top:110px;}
.aside-card{background:var(--white);border:1px solid var(--line);border-radius:var(--r-lg);padding:22px;box-shadow:var(--sh-sm);}
.aside-card__title{
  font-family:var(--font-serif);font-size:17px;margin-bottom:14px;padding-bottom:12px;
  border-bottom:1px solid var(--line);color:var(--green-dark);
}
.toc{display:flex;flex-direction:column;gap:2px;}
.toc a{
  display:block;font-size:14px;line-height:1.65;color:var(--ink-2);padding:7px 10px;
  border-left:2px solid transparent;border-radius:0 6px 6px 0;
  transition:color .18s var(--ease),background-color .18s var(--ease),border-color .18s var(--ease);
}
.toc a:hover{background:var(--green-soft);color:var(--green-dark);}
.toc a.is-active{border-left-color:var(--accent);background:var(--accent-soft);color:var(--accent-deep);font-weight:600;}
.toc .toc-h3 a{padding-left:24px;font-size:13.5px;}
.toc-empty{font-size:13.5px;color:var(--ink-3);}
.aside-links{display:flex;flex-direction:column;}
.aside-links li{border-bottom:1px solid var(--line);}
.aside-links li:last-child{border-bottom:0;}
.aside-links a{display:block;padding:12px 0;font-size:14.5px;color:var(--ink);line-height:1.6;}
.aside-links a:hover{color:var(--accent-dark);}
.aside-links .kicker{display:block;font-size:12px;color:var(--ink-3);margin-bottom:3px;letter-spacing:.04em;}
.aside-back{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  background:var(--green);color:var(--paper);border-radius:var(--r-md);padding:15px 18px;font-size:14.5px;font-weight:600;
}
.aside-back:hover{background:var(--green-dark);color:var(--paper);}
.aside-back svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;}

/* ---------- 文章尾部 ---------- */
.article-foot{margin-top:44px;padding-top:28px;border-top:1px solid var(--line);}
.tag-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:22px;}
.tag-row .tag-label{font-size:13px;color:var(--ink-3);}
.tag{
  display:inline-block;font-size:13px;padding:6px 12px;border-radius:6px;
  background:var(--accent-soft);color:var(--accent-deep);font-weight:600;
  transition:background-color .18s var(--ease),transform .18s var(--ease);
}
.tag:hover{background:#F6D9C9;color:var(--accent-deep);transform:translateY(-1px);}
.tag--plain{background:var(--green-soft);color:var(--green-dark);}
.share-bar{
  display:flex;align-items:center;gap:12px;flex-wrap:wrap;
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-md);
  padding:16px 20px;box-shadow:var(--sh-sm);
}
.share-bar .share-label{font-size:14px;color:var(--ink-2);margin-right:auto;}

/* ---------- 相关推荐卡片 ---------- */
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.card{
  display:flex;flex-direction:column;background:var(--white);border:1px solid var(--line);
  border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-sm);
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.card:hover{transform:translateY(-3px);border-color:var(--green);box-shadow:var(--sh-md);}
.card__media{overflow:hidden;background:var(--green-soft);}
.card__media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .35s var(--ease);}
.card:hover .card__media img{transform:scale(1.03);}
.card__body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:9px;flex:1 1 auto;}
.card__body h3{font-size:18px;line-height:1.5;}
.card__body h3 a{color:var(--ink);}
.card__body h3 a:hover{color:var(--accent-dark);}
.card__body p{font-size:14px;line-height:1.8;color:var(--ink-2);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card__meta{font-size:12.5px;color:var(--ink-3);margin-top:auto;display:flex;gap:10px;flex-wrap:wrap;}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;background:var(--green-deep);border-radius:var(--r-xl);
  padding:44px 44px;display:flex;align-items:center;justify-content:space-between;gap:28px;
  flex-wrap:wrap;overflow:hidden;box-shadow:var(--sh-md);
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:220px;height:220px;border-radius:50%;
  border:1px solid rgba(185,138,60,.35);
}
.cta-band h2{font-family:var(--font-serif);font-size:30px;color:var(--paper);line-height:1.3;}
.cta-band p{color:rgba(247,244,236,.76);font-size:14.5px;margin:10px 0 0;max-width:520px;}
.cta-band__actions{display:flex;gap:12px;flex-wrap:wrap;position:relative;z-index:2;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--green-deep);color:var(--paper);padding:64px 0 0;margin-top:88px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;padding-bottom:44px;}
.footer-brand__name{font-family:var(--font-serif);font-size:20px;color:var(--paper);display:block;margin-bottom:14px;letter-spacing:.01em;}
.footer-brand p{font-size:14px;line-height:1.9;color:rgba(247,244,236,.66);max-width:340px;margin:0;}
.footer-col h4{font-size:14px;color:var(--gold);margin-bottom:16px;letter-spacing:.06em;font-weight:600;}
.footer-col li{margin-bottom:8px;}
.footer-col a{font-size:14px;line-height:2;color:rgba(247,244,236,.76);}
.footer-col a:hover{color:var(--accent);text-decoration:underline;text-underline-offset:4px;}
.footer-bottom{
  border-top:1px solid rgba(247,244,236,.16);padding:20px 0 26px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-bottom p{font-size:13px;color:rgba(247,244,236,.56);margin:0;}

/* ---------- 提示条 ---------- */
.toast{
  position:fixed;left:50%;bottom:32px;transform:translate(-50%,18px);
  background:var(--green-dark);color:var(--paper);padding:12px 22px;border-radius:10px;
  font-size:14px;opacity:0;pointer-events:none;transition:opacity .22s var(--ease),transform .22s var(--ease);
  z-index:300;box-shadow:var(--sh-lg);
}
.toast.is-visible{opacity:1;transform:translate(-50%,0);}

/* ---------- 响应式 ---------- */
@media (max-width:1180px){
  .brand-name{font-size:16px;}
  .nav-card{padding:8px 10px;font-size:13.5px;}
}
@media (max-width:1024px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:32px;}
  .article-aside{position:static;order:2;}
  .article-main{max-width:100%;}
  .article-hero h1{font-size:40px;}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:28px;}
}
@media (max-width:992px){
  .nav-cards{
    position:absolute;left:0;right:0;top:calc(100% + 10px);
    display:grid;grid-template-columns:1fr 1fr;gap:8px;
    background:var(--white);border:1px solid var(--line);border-radius:var(--r-lg);
    padding:12px;box-shadow:var(--sh-lg);
    opacity:0;visibility:hidden;transform:translateY(-8px);
    transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s;
    z-index:90;
  }
  .nav-cards.is-open{opacity:1;visibility:visible;transform:translateY(0);}
  .nav-card{padding:12px;font-size:14px;justify-content:flex-start;width:100%;}
  .nav-toggle{display:inline-flex;}
  .nav-tools .btn--primary{display:none;}
  .brand-name{font-size:16px;}
}
@media (max-width:768px){
  .container{padding:0 20px;}
  .section{padding:64px 0;}
  .article-hero{padding:36px 0 40px;border-radius:var(--r-lg);margin-top:12px;}
  .article-hero h1{font-size:32px;}
  .article-hero__lead{font-size:15px;}
  .section-head h2{font-size:26px;}
  .article-body{font-size:16.5px;line-height:1.9;}
  .article-body h2{font-size:23px;}
  .article-body h3{font-size:19px;}
  .related-grid{grid-template-columns:minmax(0,1fr);}
  .cta-band{padding:32px 24px;}
  .cta-band h2{font-size:24px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:24px;}
  .footer-brand{grid-column:1 / -1;}
  .meta-actions{margin-left:0;width:100%;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .nav-panel{padding:10px 12px;gap:10px;}
  .brand-mark{width:32px;height:32px;font-size:16px;}
  .brand-name{font-size:14.5px;}
  .nav-cards{grid-template-columns:1fr 1fr;}
  .article-hero h1{font-size:27px;line-height:1.28;}
  .article-hero__lead{font-size:14.5px;}
  .meta-bar{gap:12px;}
  .btn{height:44px;padding:0 18px;font-size:14.5px;}
  .cta-band__actions .btn{width:100%;}
  .share-bar{padding:14px 16px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
}

/* roulang page: category1 */
:root{
  --ink:#1B211E;
  --ink-2:#5F6B64;
  --ink-3:#8A948D;
  --green:#123B32;
  --green-dark:#0C2A23;
  --green-deep:#10231D;
  --orange:#E25822;
  --orange-dark:#C44716;
  --orange-soft:#FBE9E0;
  --bronze:#B98A3C;
  --paper:#F7F4EC;
  --white:#FFFFFF;
  --green-soft:#EEF2ED;
  --line:#DED7C8;
  --line-strong:#C9C0AC;
  --err:#C0392B;
  --ok:#2F6B4F;
  --r-s:8px;
  --r-m:12px;
  --r-l:18px;
  --r-xl:24px;
  --sh-s:0 1px 2px rgba(16,35,29,.06);
  --sh-m:0 10px 30px rgba(16,35,29,.08);
  --sh-l:0 24px 60px rgba(16,35,29,.12);
  --container:1240px;
  --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",SimSun,serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.9;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--ink)}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
:focus-visible{outline:3px solid rgba(226,88,34,.45);outline-offset:3px;border-radius:6px}
.skip-link{
  position:absolute;left:16px;top:-64px;z-index:200;
  background:var(--green);color:var(--paper);
  padding:10px 18px;border-radius:var(--r-m);
  transition:top .18s ease;
}
.skip-link:focus{top:16px}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}
/* ============ Header / Nav ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  padding:14px 0 6px;
  background:var(--paper);
  transition:box-shadow .2s ease;
}
.site-header.is-stuck{box-shadow:0 14px 26px rgba(16,35,29,.10)}
.navbar{
  position:relative;
  display:grid;
  grid-template-columns:auto minmax(0,1fr) auto;
  align-items:center;
  gap:18px;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-l);
  box-shadow:var(--sh-m);
  padding:12px 16px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-serif);
  font-size:19px;
  font-weight:700;
  letter-spacing:.02em;
  color:var(--green);
  white-space:nowrap;
}
.brand__mark{
  width:38px;height:38px;
  display:grid;place-items:center;
  border-radius:10px;
  background:var(--green);
  color:var(--paper);
  border:1px solid var(--green-dark);
  box-shadow:inset 0 0 0 2px rgba(185,138,60,.45);
  flex:0 0 auto;
}
.brand__mark svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.brand:hover .brand__mark{background:var(--green-dark)}
.nav-cards{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:6px;
  flex-wrap:wrap;
}
.nav-card{
  position:relative;
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:9px 13px;
  border-radius:10px;
  font-size:14px;
  font-weight:600;
  color:var(--ink-2);
  border:1px solid transparent;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease;
  white-space:nowrap;
}
.nav-card svg{
  width:18px;height:18px;
  fill:none;stroke:currentColor;stroke-width:1.5;
  stroke-linecap:round;stroke-linejoin:round;
  flex:0 0 auto;
}
.nav-card:hover{background:var(--green-soft);color:var(--green);border-color:var(--line)}
.nav-card:active{transform:scale(.98)}
.nav-card.is-active{background:var(--green);color:var(--paper);border-color:var(--green-dark);box-shadow:var(--sh-s)}
.nav-card.is-active:hover{background:var(--green-dark);color:var(--paper)}
.nav-actions{display:inline-flex;align-items:center;gap:10px}
.nav-cta-mobile{display:none}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  align-items:center;justify-content:center;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:10px;
  cursor:pointer;
  transition:background .18s ease,border-color .18s ease;
}
.nav-toggle:hover{background:var(--green-soft);border-color:var(--line-strong)}
.nav-toggle svg{width:20px;height:20px;fill:none;stroke:var(--green);stroke-width:1.7;stroke-linecap:round}
/* ============ Buttons ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:46px;
  padding:0 22px;
  border-radius:11px;
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
  text-align:center;
}
.btn svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.btn--primary{background:var(--orange);color:#fff;box-shadow:var(--sh-s)}
.btn--primary:hover{background:var(--orange-dark);transform:translateY(-2px);box-shadow:var(--sh-m)}
.btn--primary:active{transform:scale(.98)}
.btn--ghost{background:var(--white);color:var(--green);border-color:var(--green)}
.btn--ghost:hover{background:var(--green-soft);transform:translateY(-2px)}
.btn--ghost:active{transform:scale(.98)}
.btn--sm{min-height:40px;padding:0 16px;font-size:14px;border-radius:10px}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--green);
  border-bottom:1px solid rgba(18,59,50,.35);
  padding-bottom:2px;
  transition:color .18s ease,border-color .18s ease;
}
.link-arrow svg{width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;transition:transform .18s ease}
.link-arrow:hover{color:var(--orange);border-color:var(--orange)}
.link-arrow:hover svg{transform:translateX(4px)}
/* ============ Hero ============ */
.page-hero{padding:18px 0 0}
.hero-panel{
  display:grid;
  grid-template-columns:minmax(0,1.35fr) minmax(0,.85fr);
  gap:24px;
  align-items:stretch;
}
.hero-panel__main{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-xl);
  box-shadow:var(--sh-m);
  padding:34px 36px 32px;
  position:relative;
  overflow:hidden;
}
.hero-panel__main::before{
  content:"";
  position:absolute;
  inset:10px;
  border:1px solid rgba(185,138,60,.28);
  border-radius:18px;
  pointer-events:none;
}
.breadcrumb{
  display:flex;align-items:center;gap:8px;
  font-size:13px;color:var(--ink-3);
  margin-bottom:18px;
  flex-wrap:wrap;
}
.breadcrumb a{color:var(--ink-2);transition:color .18s ease}
.breadcrumb a:hover{color:var(--orange)}
.breadcrumb .sep{color:var(--line-strong)}
.breadcrumb .current{color:var(--green);font-weight:700}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.08em;
  color:var(--orange-dark);
  background:var(--orange-soft);
  border-radius:6px;
  padding:5px 12px;
  margin-bottom:16px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:2px;background:var(--orange)}
.page-hero h1{
  font-family:var(--font-serif);
  font-size:clamp(30px,4vw,50px);
  line-height:1.16;
  letter-spacing:.01em;
  margin-bottom:16px;
  color:var(--green);
}
.hero-lede{
  font-size:16px;
  color:var(--ink-2);
  line-height:1.85;
  max-width:52ch;
  margin-bottom:22px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px}
.stat-card{
  position:relative;
  border-radius:var(--r-xl);
  overflow:hidden;
  padding:28px;
  color:var(--paper);
  border:1px solid rgba(185,138,60,.42);
  background:
    linear-gradient(165deg,rgba(12,42,35,.93),rgba(16,35,29,.97)),
    url("/assets/images/backpic/back-1.png") center/cover no-repeat;
  box-shadow:var(--sh-m);
  display:flex;
  flex-direction:column;
  gap:18px;
}
.stat-card__label{
  font-size:13px;letter-spacing:.14em;color:var(--bronze);font-weight:600;
}
.stat-item{
  display:flex;align-items:baseline;justify-content:space-between;gap:12px;
  padding-bottom:14px;
  border-bottom:1px solid rgba(247,244,236,.16);
}
.stat-item:last-of-type{border-bottom:0;padding-bottom:0}
.stat-item dt{font-size:14px;color:rgba(247,244,236,.78)}
.stat-item dd{
  margin:0;
  font-family:var(--font-serif);
  font-size:26px;font-weight:700;line-height:1.1;
  color:var(--paper);
}
.stat-item dd small{font-size:13px;font-family:var(--font-sans);font-weight:500;color:rgba(247,244,236,.66);margin-left:4px}
.stat-note{
  margin-top:auto;
  font-size:13px;line-height:1.7;color:rgba(247,244,236,.7);
  border-top:1px solid rgba(247,244,236,.16);
  padding-top:14px;
}
/* ============ Sections ============ */
.section{padding:64px 0 0}
.section--tight{padding-top:48px}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  flex-wrap:wrap;
  margin-bottom:28px;
}
.section-head h2{
  font-family:var(--font-serif);
  font-size:clamp(24px,2.7vw,32px);
  line-height:1.25;
  color:var(--green);
  position:relative;
  padding-left:16px;
}
.section-head h2::before{
  content:"";
  position:absolute;left:0;top:.32em;bottom:.32em;
  width:4px;border-radius:2px;background:var(--orange);
}
.section-head p{
  margin:6px 0 0;
  font-size:15px;color:var(--ink-2);
  max-width:62ch;
}
/* ============ Topic layout ============ */
.topic-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 336px;
  gap:24px;
  align-items:start;
}
.timeline{
  position:relative;
  padding:4px 0 0;
}
.timeline::before{
  content:"";
  position:absolute;
  left:23px;top:18px;bottom:18px;
  width:2px;
  background:linear-gradient(180deg,var(--bronze),var(--line) 70%,rgba(222,215,200,0));
  border-radius:2px;
}
.tl-item{
  position:relative;
  padding-left:68px;
  margin-bottom:24px;
}
.tl-item:last-child{margin-bottom:0}
.tl-node{
  position:absolute;
  left:0;top:14px;
  width:48px;height:48px;
  display:grid;place-items:center;
  background:var(--white);
  border:1px solid var(--line-strong);
  border-radius:14px;
  font-family:var(--font-serif);
  font-size:19px;font-weight:700;
  color:var(--bronze);
  box-shadow:var(--sh-s);
  z-index:2;
  transition:color .18s ease,border-color .18s ease,background .18s ease;
}
.tl-item:hover .tl-node{color:var(--orange);border-color:var(--orange)}
.tl-date{
  display:inline-block;
  font-size:13px;
  letter-spacing:.06em;
  color:var(--ink-3);
  margin-bottom:8px;
}
.tl-card{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-l);
  box-shadow:var(--sh-s);
  overflow:hidden;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.tl-card:hover{transform:translateY(-3px);border-color:var(--green);box-shadow:var(--sh-m)}
.tl-card--lead{
  display:grid;
  grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);
}
.tl-card--plain{
  display:grid;
  grid-template-columns:216px minmax(0,1fr);
}
.tl-media{
  margin:0;
  position:relative;
  overflow:hidden;
  background:linear-gradient(150deg,var(--green),var(--green-deep));
  min-height:100%;
}
.tl-media img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .35s ease;
}
.tl-card:hover .tl-media img{transform:scale(1.03)}
.tl-body{padding:24px}
.tl-body h3{
  font-family:var(--font-serif);
  font-size:21px;
  line-height:1.4;
  margin-bottom:10px;
  color:var(--green);
}
.tl-card--lead .tl-body h3{font-size:24px}
.tl-body p{
  font-size:15px;
  line-height:1.85;
  color:var(--ink-2);
  margin-bottom:16px;
}
.meta-row{
  display:flex;align-items:center;gap:10px;
  flex-wrap:wrap;
  margin-bottom:12px;
}
.badge{
  display:inline-flex;align-items:center;
  font-size:12px;font-weight:600;
  color:var(--orange-dark);
  background:var(--orange-soft);
  border-radius:6px;
  padding:3px 10px;
}
.badge--outline{
  background:transparent;
  color:var(--green);
  border:1px solid var(--line-strong);
}
.tag-list{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px}
.tag-list li{
  font-size:12.5px;
  color:var(--ink-2);
  background:var(--green-soft);
  border:1px solid var(--line);
  border-radius:6px;
  padding:3px 10px;
}
.tl-foot{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap}
.tl-count{font-size:13px;color:var(--ink-3)}
/* ============ Aside ============ */
.topic-aside{position:relative}
.aside-stack{position:sticky;top:104px;display:grid;gap:16px}
.index-card{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-l);
  box-shadow:var(--sh-s);
  padding:22px;
}
.index-card h2{
  font-family:var(--font-serif);
  font-size:18px;
  color:var(--green);
  margin-bottom:6px;
}
.index-card .index-note{
  font-size:13px;color:var(--ink-3);
  margin-bottom:14px;
}
.index-list li + li{border-top:1px solid var(--line)}
.index-list a{
  display:flex;align-items:center;gap:12px;
  padding:11px 8px;
  border-radius:8px;
  font-size:14px;
  color:var(--ink-2);
  transition:background .18s ease,color .18s ease;
}
.index-list a span{
  font-family:var(--font-serif);
  font-size:15px;
  color:var(--bronze);
  min-width:20px;
  transition:color .18s ease;
}
.index-list a svg{
  width:14px;height:14px;margin-left:auto;
  fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;
  opacity:.5;transition:transform .18s ease,opacity .18s ease;
}
.index-list a:hover{background:var(--green-soft);color:var(--green)}
.index-list a:hover span{color:var(--orange)}
.index-list a:hover svg{transform:translateX(3px);opacity:1}
.aside-cta{
  background:var(--green);
  color:var(--paper);
  border-radius:var(--r-l);
  padding:22px;
  border:1px solid var(--green-dark);
}
.aside-cta h3{
  font-family:var(--font-serif);
  font-size:17px;
  color:var(--paper);
  margin-bottom:8px;
}
.aside-cta p{font-size:13.5px;line-height:1.75;color:rgba(247,244,236,.76);margin-bottom:16px}
.aside-cta .btn{width:100%}
.aside-cta .btn--ghost{background:transparent;color:var(--paper);border-color:rgba(247,244,236,.5)}
.aside-cta .btn--ghost:hover{background:rgba(247,244,236,.12)}
/* ============ Look grid ============ */
.look-grid{
  display:grid;
  grid-template-columns:1.35fr 1fr 1fr;
  gap:20px;
}
.look-card{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-l);
  padding:24px;
  box-shadow:var(--sh-s);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  position:relative;
  overflow:hidden;
}
.look-card:hover{transform:translateY(-3px);border-color:var(--green);box-shadow:var(--sh-m)}
.look-card__num{
  font-family:var(--font-serif);
  font-size:28px;
  font-weight:700;
  color:var(--bronze);
  line-height:1;
  margin-bottom:14px;
}
.look-card h3{
  font-size:19px;
  line-height:1.45;
  color:var(--green);
  margin-bottom:10px;
}
.look-card p{font-size:14.5px;line-height:1.85;color:var(--ink-2)}
.look-card--wide{
  background:linear-gradient(160deg,#fff,var(--green-soft));
  border-color:var(--line-strong);
}
.look-card--wide h3{font-size:22px}
.look-card--wide p{font-size:15px}
.look-list{margin-top:14px;display:grid;gap:8px}
.look-list li{
  display:flex;gap:9px;align-items:flex-start;
  font-size:14px;color:var(--ink-2);
}
.look-list li::before{
  content:"";
  width:6px;height:6px;border-radius:2px;
  background:var(--orange);
  margin-top:9px;flex:0 0 auto;
}
/* ============ FAQ ============ */
.faq-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:16px;
}
.faq-item{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-m);
  box-shadow:var(--sh-s);
  overflow:hidden;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.faq-item:hover{border-color:var(--line-strong)}
.faq-item.is-open{border-color:var(--green);box-shadow:var(--sh-m)}
.faq-trigger{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:18px 20px;
  background:transparent;
  border:0;
  cursor:pointer;
  text-align:left;
  font-size:16.5px;
  font-weight:600;
  line-height:1.6;
  color:var(--ink);
  transition:color .18s ease,background .18s ease;
}
.faq-trigger:hover{color:var(--green);background:var(--green-soft)}
.faq-icon{
  flex:0 0 auto;
  width:22px;height:22px;
  display:grid;place-items:center;
  border-radius:6px;
  border:1px solid var(--line-strong);
  color:var(--green);
  transition:transform .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
}
.faq-icon svg{width:12px;height:12px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round}
.faq-item.is-open .faq-icon{background:var(--orange);border-color:var(--orange);color:#fff;transform:rotate(180deg)}
.faq-panel{
  padding:0 20px 20px;
  font-size:15px;
  line-height:1.9;
  color:var(--ink-2);
  animation:faqIn .18s ease;
}
.faq-panel[hidden]{display:none}
@keyframes faqIn{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}
/* ============ Related categories ============ */
.cat-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:20px;
}
.cat-card{
  display:flex;
  flex-direction:column;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-l);
  overflow:hidden;
  box-shadow:var(--sh-s);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.cat-card:hover{transform:translateY(-3px);border-color:var(--green);box-shadow:var(--sh-m)}
.cat-card__media{aspect-ratio:16/10;overflow:hidden;background:linear-gradient(150deg,var(--green),var(--green-deep))}
.cat-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.cat-card:hover .cat-card__media img{transform:scale(1.03)}
.cat-card__body{padding:20px;display:flex;flex-direction:column;gap:8px;flex:1}
.cat-card__body h3{font-size:19px;color:var(--green);font-family:var(--font-serif)}
.cat-card__body p{font-size:14.5px;line-height:1.8;color:var(--ink-2);margin:0;flex:1}
.cat-card__foot{display:flex;align-items:center;justify-content:space-between;padding-top:6px}
/* ============ CTA ============ */
.cta-band{
  background:
    linear-gradient(120deg,rgba(12,42,35,.96),rgba(16,35,29,.94)),
    url("/assets/images/backpic/back-3.png") center/cover no-repeat;
  border-radius:var(--r-xl);
  border:1px solid var(--green-dark);
  padding:40px 44px;
  display:grid;
  grid-template-columns:minmax(0,1fr) auto;
  align-items:center;
  gap:28px;
  color:var(--paper);
  box-shadow:var(--sh-m);
}
.cta-band h2{
  font-family:var(--font-serif);
  font-size:clamp(22px,2.6vw,30px);
  color:var(--paper);
  margin-bottom:10px;
  line-height:1.3;
}
.cta-band p{font-size:15px;line-height:1.85;color:rgba(247,244,236,.78);margin:0;max-width:56ch}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
.cta-actions .btn--ghost{background:transparent;color:var(--paper);border-color:rgba(247,244,236,.55)}
.cta-actions .btn--ghost:hover{background:rgba(247,244,236,.14)}
/* ============ Footer ============ */
.site-footer{
  margin-top:72px;
  background:var(--green-deep);
  color:var(--paper);
  padding:56px 0 26px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:36px;
}
.footer-brand__name{
  font-family:var(--font-serif);
  font-size:20px;
  font-weight:700;
  color:var(--paper);
  display:inline-block;
  margin-bottom:14px;
}
.footer-brand p{
  font-size:14px;
  line-height:1.9;
  color:rgba(247,244,236,.72);
  max-width:34ch;
}
.footer-col h4{
  font-size:14px;
  letter-spacing:.06em;
  color:var(--bronze);
  margin-bottom:14px;
  font-weight:700;
}
.footer-col ul{display:grid;gap:2px}
.footer-col a{
  display:inline-block;
  font-size:14px;
  line-height:2;
  color:rgba(247,244,236,.8);
  transition:color .18s ease;
}
.footer-col a:hover{color:var(--orange);text-decoration:underline;text-underline-offset:4px}
.footer-bottom{
  margin-top:40px;
  padding-top:22px;
  border-top:1px solid rgba(247,244,236,.16);
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
}
.footer-bottom p{
  margin:0;
  font-size:13px;
  color:rgba(247,244,236,.6);
}
/* ============ Responsive ============ */
@media (max-width:1080px){
  .topic-layout{grid-template-columns:minmax(0,1fr) 300px}
  .tl-card--plain{grid-template-columns:180px minmax(0,1fr)}
  .look-grid{grid-template-columns:1fr 1fr}
  .look-card--wide{grid-column:1/-1}
}
@media (max-width:992px){
  .navbar{grid-template-columns:auto auto;justify-content:space-between;gap:12px}
  .nav-toggle{display:inline-flex}
  .nav-actions .btn--primary{display:none}
  .nav-cards{
    display:none;
    position:absolute;
    top:calc(100% + 10px);
    left:0;right:0;
    background:var(--white);
    border:1px solid var(--line);
    border-radius:var(--r-l);
    box-shadow:var(--sh-l);
    padding:12px;
    grid-template-columns:1fr 1fr;
    gap:8px;
    z-index:90;
  }
  .nav-cards.is-open{display:grid}
  .nav-card{
    justify-content:flex-start;
    padding:12px 14px;
    font-size:14px;
    background:var(--paper);
    border-color:var(--line);
  }
  .nav-card.is-active{background:var(--green);color:var(--paper);border-color:var(--green-dark)}
  .nav-cta-mobile{
    display:inline-flex;
    grid-column:1/-1;
    justify-content:center;
    margin-top:4px;
    min-height:44px;
  }
  .hero-panel{grid-template-columns:1fr}
  .topic-layout{grid-template-columns:1fr}
  .aside-stack{position:static}
  .index-card{order:-1}
  .cta-band{grid-template-columns:1fr;padding:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .faq-grid{grid-template-columns:1fr}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .section{padding-top:48px}
  .hero-panel__main{padding:26px 22px}
  .brand{font-size:16.5px}
  .brand__mark{width:34px;height:34px}
  .tl-card--lead{grid-template-columns:1fr}
  .tl-card--lead .tl-media{aspect-ratio:16/9}
  .tl-card--plain{grid-template-columns:1fr}
  .tl-card--plain .tl-media{aspect-ratio:4/3}
  .tl-item{padding-left:60px}
  .tl-node{width:44px;height:44px;font-size:17px}
  .timeline::before{left:21px}
  .cat-grid{grid-template-columns:1fr}
  .look-grid{grid-template-columns:1fr}
  .site-footer{margin-top:56px;padding:44px 0 22px}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .nav-cards{grid-template-columns:1fr}
  .nav-cta-mobile{grid-column:auto}
  .page-hero h1{font-size:30px}
  .hero-actions .btn{width:100%}
  .tl-body{padding:18px}
  .tl-card--lead .tl-body h3{font-size:21px}
  .tl-item{padding-left:0;margin-bottom:20px}
  .tl-node{position:static;margin-bottom:12px;width:40px;height:40px}
  .timeline::before{display:none}
  .cta-band{padding:26px 20px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:8px}
  .faq-trigger{font-size:15.5px;padding:16px}
  .faq-panel{padding:0 16px 16px;font-size:14.5px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition-duration:.01ms !important;animation-duration:.01ms !important}
}

/* roulang page: category2 */
:root{
  --green:#123B32;
  --green-deep:#0C2A23;
  --dark:#10231D;
  --orange:#E25822;
  --orange-hover:#C44716;
  --orange-soft:#FBE9E0;
  --gold:#B98A3C;
  --paper:#F7F4EC;
  --card:#FFFFFF;
  --green-pale:#EEF2ED;
  --ink:#1B211E;
  --muted:#5F6B64;
  --weak:#8A948D;
  --border:#DED7C8;
  --border-strong:#C9C0AC;
  --err:#C0392B;
  --ok:#2F6B4F;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:18px;
  --r-xl:24px;
  --sh-sm:0 1px 2px rgba(16,35,29,.06);
  --sh-md:0 10px 30px rgba(16,35,29,.08);
  --sh-lg:0 24px 60px rgba(16,35,29,.12);
  --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --gap:24px;
  --sec:88px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.9;
  color:var(--ink);
  background:var(--paper);
  background-image:
    radial-gradient(rgba(18,59,50,.045) 1px,transparent 1px);
  background-size:22px 22px;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--green);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--orange);}
button{font-family:inherit;font-size:inherit;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-family:var(--font-serif);font-weight:700;color:var(--green);line-height:1.25;}
p{margin:0 0 1.1em;}
p:last-child{margin-bottom:0;}
:focus-visible{outline:3px solid rgba(226,88,34,.45);outline-offset:3px;border-radius:4px;}

.skip-link{
  position:absolute;left:-9999px;top:0;z-index:200;
  background:var(--green);color:#fff;padding:10px 18px;border-radius:0 0 var(--r-md) 0;
}
.skip-link:focus{left:0;color:#fff;}

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

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;
  top:16px;
  z-index:80;
  padding-top:16px;
  transition:filter .2s ease;
}
.nav-shell{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-md);
  display:flex;
  align-items:center;
  gap:22px;
  padding:14px 18px;
  transition:box-shadow .2s ease,border-color .2s ease;
}
.site-header.is-stuck .nav-shell{
  box-shadow:var(--sh-lg);
  border-color:var(--border-strong);
}
.brand{
  display:flex;
  align-items:center;
  gap:12px;
  flex-shrink:0;
}
.brand__seal{
  width:42px;height:42px;
  border-radius:var(--r-md);
  background:var(--green);
  border:1px solid var(--green-deep);
  display:flex;align-items:center;justify-content:center;
  box-shadow:inset 0 0 0 2px rgba(185,138,60,.45);
  flex-shrink:0;
}
.brand__seal svg{width:24px;height:24px;stroke:var(--paper);fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;}
.brand__text{display:flex;flex-direction:column;line-height:1.2;}
.brand__name{
  font-family:var(--font-serif);
  font-size:18px;
  font-weight:700;
  color:var(--green);
  letter-spacing:.02em;
}
.brand__sub{
  font-size:11px;
  letter-spacing:.18em;
  color:var(--weak);
  text-transform:uppercase;
}
.nav-cards{
  display:flex;
  align-items:stretch;
  gap:10px;
  flex:1;
  min-width:0;
}
.nav-card{
  display:flex;
  align-items:center;
  gap:8px;
  padding:10px 14px;
  border:1px solid var(--border);
  border-radius:var(--r-md);
  background:var(--card);
  color:var(--green);
  font-size:14px;
  font-weight:500;
  white-space:nowrap;
  position:relative;
  transition:background .18s ease,border-color .18s ease,color .18s ease,transform .18s ease;
}
.nav-card svg{
  width:20px;height:20px;flex-shrink:0;
  fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;
}
.nav-card:hover{
  background:var(--green-pale);
  border-color:var(--border-strong);
  transform:translateY(-1px);
  color:var(--green);
}
.nav-card.is-active{
  background:var(--green);
  border-color:var(--green-deep);
  color:#fff;
  box-shadow:var(--sh-sm);
}
.nav-card.is-active::after{
  content:"";
  position:absolute;
  left:14px;right:14px;top:-1px;
  height:3px;
  border-radius:0 0 3px 3px;
  background:var(--orange);
}
.nav-card.is-active:hover{background:var(--green-deep);color:#fff;}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.nav-toggle{
  display:none;
  align-items:center;justify-content:center;
  width:44px;height:44px;
  border-radius:var(--r-md);
  border:1px solid var(--border);
  background:var(--card);
  color:var(--green);
}
.nav-toggle svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;}
.nav-drawer{
  display:none;
  margin-top:12px;
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-md);
  padding:16px;
}
.nav-drawer.is-open{display:block;}
.nav-drawer .nav-card{
  white-space:normal;
  padding:14px 12px;
  font-size:14px;
  flex-direction:column;
  align-items:flex-start;
  gap:6px;
}
.nav-drawer__grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:10px;
  margin-bottom:14px;
}
.nav-drawer .btn{width:100%;justify-content:center;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 22px;
  border-radius:11px;
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1;
  cursor:pointer;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.btn svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;}
.btn--primary{background:var(--orange);color:#fff;border-color:var(--orange);box-shadow:0 6px 16px rgba(226,88,34,.24);}
.btn--primary:hover{background:var(--orange-hover);border-color:var(--orange-hover);color:#fff;transform:translateY(-2px);}
.btn--primary:active{transform:scale(.98);}
.btn--ghost{background:var(--card);color:var(--green);border-color:var(--green);}
.btn--ghost:hover{background:var(--green-pale);color:var(--green);transform:translateY(-2px);}
.btn--ghost:active{transform:scale(.98);}
.btn--light{background:var(--paper);color:var(--green);border-color:var(--paper);}
.btn--light:hover{background:#fff;color:var(--green-deep);transform:translateY(-2px);}
.btn--link{
  height:auto;padding:0;background:none;border:none;
  color:var(--green);font-weight:600;
  text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px;
}
.btn--link:hover{color:var(--orange);}
.btn--link:hover svg{transform:translateX(4px);}
.btn--link svg{transition:transform .18s ease;}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none!important;box-shadow:none;}

/* ---------- breadcrumb ---------- */
.breadcrumb{
  font-size:13px;
  color:var(--weak);
  padding:26px 0 0;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--orange);}
.breadcrumb .sep{color:var(--border-strong);}
.breadcrumb .current{color:var(--green);font-weight:700;}

/* ---------- hero ---------- */
.page-hero{padding:22px 0 0;}
.hero-card{
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:32px;
  align-items:center;
  background:linear-gradient(140deg,var(--green) 0%,var(--green-deep) 58%,var(--dark) 100%);
  border-radius:var(--r-xl);
  border:1px solid var(--green-deep);
  box-shadow:var(--sh-lg);
  padding:44px;
  position:relative;
  overflow:hidden;
  color:var(--paper);
}
.hero-card::before{
  content:"";
  position:absolute;
  inset:14px;
  border:1px solid rgba(185,138,60,.28);
  border-radius:var(--r-lg);
  pointer-events:none;
}
.hero-copy{position:relative;z-index:2;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  letter-spacing:.16em;
  color:var(--gold);
  border:1px solid rgba(185,138,60,.5);
  border-radius:6px;
  padding:5px 12px;
  margin-bottom:20px;
}
.hero-copy h1{
  color:#fff;
  font-size:48px;
  line-height:1.15;
  letter-spacing:.01em;
  margin-bottom:18px;
}
.hero-lead{
  font-size:17px;
  line-height:1.85;
  color:rgba(247,244,236,.86);
  max-width:38em;
}
.hero-lead strong{color:#fff;font-weight:600;}
.hero-facts{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:24px;
}
.fact-chip{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:rgba(247,244,236,.9);
  background:rgba(247,244,236,.08);
  border:1px solid rgba(247,244,236,.18);
  border-radius:var(--r-sm);
  padding:7px 12px;
}
.fact-chip svg{width:15px;height:15px;fill:none;stroke:var(--gold);stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;}
.hero-figure{position:relative;z-index:2;}
.hero-figure__frame{
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid rgba(185,138,60,.4);
  box-shadow:var(--sh-lg);
  aspect-ratio:16/10;
  background:var(--green-deep);
}
.hero-figure__frame img{width:100%;height:100%;object-fit:cover;}
.hero-figure__cap{
  margin-top:12px;
  font-size:13px;
  color:rgba(247,244,236,.7);
  display:flex;
  align-items:center;
  gap:8px;
}
.hero-figure__cap::before{
  content:"";
  width:22px;height:1px;background:var(--gold);display:inline-block;
}

/* ---------- section shell ---------- */
.section{padding:var(--sec) 0 0;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  margin-bottom:30px;
}
.section-head h2{
  font-size:32px;
  line-height:1.25;
}
.section-head .sub{
  font-size:15px;
  color:var(--muted);
  margin-top:8px;
  max-width:52em;
}
.section-head .head-aside{flex-shrink:0;}

/* ---------- steps layout ---------- */
.guide-layout{
  display:grid;
  grid-template-columns:8fr 4fr;
  gap:40px;
  align-items:start;
}
.steps{
  position:relative;
  padding-left:54px;
}
.steps::before{
  content:"";
  position:absolute;
  left:19px;
  top:14px;
  bottom:26px;
  width:2px;
  background:linear-gradient(180deg,var(--gold),var(--border) 82%,transparent);
  border-radius:2px;
}
.step{position:relative;margin-bottom:24px;}
.step:last-child{margin-bottom:0;}
.step__dot{
  position:absolute;
  left:-54px;
  top:22px;
  width:40px;height:40px;
  border-radius:50%;
  background:var(--card);
  border:2px solid var(--green);
  color:var(--green);
  font-family:var(--font-serif);
  font-size:15px;
  font-weight:700;
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--sh-sm);
  z-index:2;
}
.step.is-current .step__dot{background:var(--orange);border-color:var(--orange);color:#fff;}
.step-card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-sm);
  padding:26px;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.step-card:hover{
  transform:translateY(-3px);
  border-color:var(--green);
  box-shadow:var(--sh-md);
}
.step-card__top{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  margin-bottom:12px;
  flex-wrap:wrap;
}
.step-card__top h3{
  font-size:21px;
  line-height:1.4;
}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:12px;
  font-weight:600;
  letter-spacing:.04em;
  padding:4px 10px;
  border-radius:6px;
  background:var(--orange-soft);
  color:var(--orange-hover);
  border:1px solid rgba(226,88,34,.18);
  white-space:nowrap;
}
.tag--green{background:var(--green-pale);color:var(--green);border-color:rgba(18,59,50,.16);}
.tag--gold{background:rgba(185,138,60,.12);color:#8A6428;border-color:rgba(185,138,60,.32);}
.step-card p{font-size:16px;line-height:1.9;color:var(--muted);}
.step-card p strong{color:var(--ink);font-weight:600;}
.step-card__note{
  margin-top:16px;
  padding-top:14px;
  border-top:1px dashed var(--border);
  font-size:13.5px;
  color:var(--weak);
  display:flex;
  gap:8px;
  align-items:flex-start;
}
.step-card__note svg{
  width:16px;height:16px;flex-shrink:0;margin-top:4px;
  fill:none;stroke:var(--gold);stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;
}

/* ---------- sidebar ---------- */
.side{position:sticky;top:104px;display:flex;flex-direction:column;gap:20px;}
.side-card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-sm);
  padding:22px;
}
.side-card h3{
  font-size:17px;
  margin-bottom:14px;
  display:flex;
  align-items:center;
  gap:8px;
}
.side-card h3::before{
  content:"";
  width:4px;height:16px;
  border-radius:2px;
  background:var(--orange);
  display:inline-block;
}
.side-list li{
  border-bottom:1px solid var(--border);
  padding:11px 0;
  font-size:14px;
  line-height:1.7;
}
.side-list li:last-child{border-bottom:none;padding-bottom:0;}
.side-list li:first-child{padding-top:0;}
.side-list a{
  color:var(--muted);
  display:flex;
  gap:8px;
  align-items:flex-start;
}
.side-list a::before{
  content:"·";
  color:var(--gold);
  font-weight:700;
  line-height:1.4;
}
.side-list a:hover{color:var(--green);}
.side-card--dark{
  background:linear-gradient(150deg,var(--green) 0%,var(--dark) 100%);
  border-color:var(--green-deep);
  color:var(--paper);
}
.side-card--dark h3{color:#fff;}
.side-card--dark h3::before{background:var(--gold);}
.side-card--dark p{color:rgba(247,244,236,.8);font-size:14px;line-height:1.8;margin-bottom:16px;}
.side-card--dark .btn{width:100%;}
.side-stat{
  display:flex;
  justify-content:space-between;
  gap:12px;
  padding:12px 0;
  border-bottom:1px solid var(--border);
  font-size:14px;
}
.side-stat:last-child{border-bottom:none;padding-bottom:0;}
.side-stat span:first-child{color:var(--weak);}
.side-stat span:last-child{color:var(--green);font-weight:600;}

/* ---------- callout ---------- */
.callout{
  margin-top:28px;
  background:var(--orange-soft);
  border:1px solid rgba(226,88,34,.22);
  border-left:4px solid var(--orange);
  border-radius:var(--r-md);
  padding:24px 26px;
}
.callout h3{
  font-size:18px;
  color:var(--orange-hover);
  margin-bottom:12px;
  display:flex;
  align-items:center;
  gap:10px;
}
.callout h3 svg{width:20px;height:20px;fill:none;stroke:var(--orange-hover);stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;}
.callout ul{display:grid;gap:8px;}
.callout li{
  font-size:15px;
  color:#7A3A18;
  line-height:1.85;
  padding-left:18px;
  position:relative;
}
.callout li::before{
  content:"";
  position:absolute;
  left:0;top:12px;
  width:6px;height:6px;
  border-radius:50%;
  background:var(--orange);
}

/* ---------- related category cards ---------- */
.rel-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.rel-card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-sm);
  overflow:hidden;
  display:flex;
  flex-direction:column;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.rel-card:hover{transform:translateY(-3px);border-color:var(--green);box-shadow:var(--sh-md);}
.rel-card__img{
  aspect-ratio:16/10;
  overflow:hidden;
  background:linear-gradient(135deg,var(--green),var(--green-deep));
}
.rel-card__img img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.rel-card:hover .rel-card__img img{transform:scale(1.03);}
.rel-card__body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.rel-card__body h3{font-size:19px;}
.rel-card__body p{font-size:14px;color:var(--muted);line-height:1.8;flex:1;}
.rel-card__link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--green);
}
.rel-card__link svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;transition:transform .18s ease;}
.rel-card:hover .rel-card__link{color:var(--orange);}
.rel-card:hover .rel-card__link svg{transform:translateX(4px);}

/* ---------- faq ---------- */
.faq-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:0 32px;
}
.faq-item{
  border-bottom:1px solid var(--border);
}
.faq-item:first-child{border-top:1px solid var(--border);}
.faq-q{
  width:100%;
  background:none;
  border:none;
  text-align:left;
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:16px;
  padding:20px 2px;
  font-size:17px;
  font-weight:600;
  line-height:1.6;
  color:var(--green);
  transition:color .18s ease;
}
.faq-q:hover{color:var(--orange);}
.faq-q .ico{
  flex-shrink:0;
  width:22px;height:22px;
  border-radius:6px;
  border:1px solid var(--border-strong);
  display:flex;align-items:center;justify-content:center;
  margin-top:2px;
  transition:transform .18s ease,background .18s ease,border-color .18s ease;
}
.faq-q .ico svg{width:12px;height:12px;fill:none;stroke:var(--green);stroke-width:2;stroke-linecap:round;}
.faq-q[aria-expanded="true"] .ico{background:var(--orange);border-color:var(--orange);transform:rotate(180deg);}
.faq-q[aria-expanded="true"] .ico svg{stroke:#fff;}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .18s ease;
}
.faq-a__inner{
  padding:0 2px 20px;
  font-size:15px;
  line-height:1.9;
  color:var(--muted);
}

/* ---------- cta band ---------- */
.cta-band{
  margin-top:var(--sec);
  background:linear-gradient(135deg,var(--green) 0%,var(--dark) 100%);
  border:1px solid var(--green-deep);
  border-radius:var(--r-xl);
  box-shadow:var(--sh-lg);
  padding:44px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  color:var(--paper);
  position:relative;
  overflow:hidden;
}
.cta-band::after{
  content:"";
  position:absolute;
  right:-60px;top:-60px;
  width:240px;height:240px;
  border-radius:50%;
  border:1px solid rgba(185,138,60,.3);
  pointer-events:none;
}
.cta-band h2{
  color:#fff;
  font-size:30px;
  margin-bottom:10px;
}
.cta-band p{
  font-size:15px;
  color:rgba(247,244,236,.82);
  max-width:36em;
}
.cta-band__actions{
  display:flex;
  gap:12px;
  flex-shrink:0;
  position:relative;
  z-index:2;
}

/* ---------- footer ---------- */
.site-footer{
  margin-top:var(--sec);
  background:var(--dark);
  color:var(--paper);
  padding:64px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:44px;
}
.footer-brand__name{
  font-family:var(--font-serif);
  font-size:20px;
  font-weight:700;
  color:#fff;
  display:block;
  margin-bottom:14px;
}
.footer-brand p{
  font-size:14px;
  line-height:2;
  color:rgba(247,244,236,.68);
  max-width:30em;
}
.footer-col h4{
  font-size:14px;
  color:var(--gold);
  letter-spacing:.08em;
  margin-bottom:16px;
  font-family:var(--font-sans);
  font-weight:700;
}
.footer-col ul{display:grid;gap:8px;}
.footer-col a{
  font-size:14px;
  color:rgba(247,244,236,.78);
  line-height:2;
}
.footer-col a:hover{color:var(--orange);text-decoration:underline;text-underline-offset:4px;}
.footer-bottom{
  border-top:1px solid rgba(247,244,236,.16);
  padding:22px 0 28px;
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
}
.footer-bottom p{
  font-size:13px;
  color:rgba(247,244,236,.55);
  margin:0;
}

/* ---------- responsive ---------- */
@media (max-width:1180px){
  .nav-card{padding:9px 11px;font-size:13px;}
  .hero-copy h1{font-size:42px;}
}
@media (max-width:1024px){
  :root{--sec:64px;}
  .nav-cards{gap:8px;}
  .nav-card span{display:none;}
  .nav-card{padding:11px;}
  .nav-card svg{width:22px;height:22px;}
  .nav-card.is-active::after{left:8px;right:8px;}
  .hero-card{grid-template-columns:1fr;padding:34px;gap:26px;}
  .hero-copy h1{font-size:40px;}
  .guide-layout{grid-template-columns:1fr;gap:32px;}
  .side{position:static;}
  .rel-grid{grid-template-columns:1fr 1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:860px){
  .nav-cards,.nav-actions .btn{display:none;}
  .nav-toggle{display:flex;}
  .nav-shell{gap:12px;}
  .faq-grid{grid-template-columns:1fr;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:32px;}
  .cta-band__actions{width:100%;flex-wrap:wrap;}
  .cta-band__actions .btn{flex:1;min-width:140px;}
}
@media (max-width:768px){
  .container{padding:0 20px;}
  .hero-card{padding:28px;}
  .hero-copy h1{font-size:34px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;}
  .section-head h2{font-size:26px;}
  .rel-grid{grid-template-columns:1fr;}
  .steps{padding-left:46px;}
  .steps::before{left:15px;}
  .step__dot{left:-46px;width:34px;height:34px;font-size:14px;}
  .step-card{padding:20px;}
}
@media (max-width:520px){
  :root{--sec:44px;}
  .container{padding:0 16px;}
  body{font-size:16px;}
  .hero-card{padding:22px;border-radius:var(--r-lg);}
  .hero-card::before{inset:9px;}
  .hero-copy h1{font-size:30px;}
  .hero-lead{font-size:15.5px;}
  .brand__name{font-size:16px;}
  .brand__sub{display:none;}
  .breadcrumb{font-size:12px;padding-top:18px;}
  .step-card__top{flex-direction:column;align-items:flex-start;gap:8px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
  .btn{width:100%;}
  .cta-band__actions .btn{flex:1 1 100%;}
  .faq-q{font-size:16px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms!important;transition-duration:.01ms!important;scroll-behavior:auto!important;}
}

/* roulang page: category3 */
:root{
  --green-900:#10231D;
  --green-800:#0C2A23;
  --green-700:#123B32;
  --orange:#E25822;
  --orange-dark:#C44716;
  --orange-soft:#FBE9E0;
  --bronze:#B98A3C;
  --paper:#F7F4EC;
  --card:#FFFFFF;
  --green-soft:#EEF2ED;
  --ink:#1B211E;
  --muted:#5F6B64;
  --faint:#8A948D;
  --line:#DED7C8;
  --line-strong:#C9C0AC;
  --error:#C0392B;
  --success:#2F6B4F;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:18px;
  --r-xl:24px;
  --shadow-sm:0 1px 2px rgba(16,35,29,.06);
  --shadow-md:0 10px 30px rgba(16,35,29,.08);
  --shadow-lg:0 24px 60px rgba(16,35,29,.12);
  --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --container:1240px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16.5px;
  line-height:1.9;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:var(--green-700);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--orange)}
button{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-family:var(--font-serif);font-weight:700;line-height:1.25;color:var(--green-900)}
p{margin:0}
table{border-collapse:collapse}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(226,88,34,.35);border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.skip-link{
  position:absolute;left:16px;top:-60px;z-index:200;
  background:var(--green-700);color:#fff;padding:10px 18px;border-radius:0 0 10px 10px;
  font-size:14px;transition:top .2s ease;
}
.skip-link:focus{top:0;color:#fff}

/* ---------- header / nav ---------- */
.site-header{position:sticky;top:0;z-index:80;background:var(--paper);padding:14px 0 12px}
.nav-shell{
  display:flex;align-items:center;gap:18px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--shadow-md);padding:12px 16px;
  transition:box-shadow .2s ease;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand__seal{
  width:38px;height:38px;border-radius:10px;
  background:var(--green-700);color:var(--paper);
  display:grid;place-items:center;
  font-family:var(--font-serif);font-size:19px;font-weight:700;
  border:1px solid var(--bronze);
}
.brand__text{
  font-family:var(--font-serif);font-size:18px;font-weight:700;color:var(--green-900);
  white-space:nowrap;letter-spacing:.01em;
}
.brand:hover .brand__text{color:var(--green-700)}
.nav-cards{
  display:flex;align-items:center;gap:8px;flex:1 1 auto;min-width:0;
  overflow-x:auto;scrollbar-width:none;
}
.nav-cards::-webkit-scrollbar{display:none}
.nav-card{
  display:inline-flex;align-items:center;gap:7px;
  padding:9px 12px;border-radius:var(--r-md);
  font-size:14px;color:var(--muted);
  border:1px solid transparent;white-space:nowrap;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease;
}
.nav-card svg{
  width:18px;height:18px;fill:none;stroke:currentColor;
  stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0;
}
.nav-card:hover{background:var(--green-soft);color:var(--green-900)}
.nav-card.is-active{
  background:var(--green-700);color:#fff;border-color:var(--green-700);
  box-shadow:inset 0 3px 0 var(--orange);
}
.nav-card.is-active:hover{color:#fff}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:auto;flex-shrink:0}
.nav-toggle{
  display:none;align-items:center;gap:8px;height:40px;padding:0 14px;
  background:#fff;border:1px solid var(--line-strong);border-radius:10px;
  font-size:14px;font-weight:600;color:var(--green-700);cursor:pointer;
}
.nav-toggle svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round}
.nav-toggle:hover{background:var(--green-soft)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:11px;
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
  cursor:pointer;text-align:center;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.btn--primary{background:var(--orange);color:#fff}
.btn--primary:hover{background:var(--orange-dark);color:#fff;transform:translateY(-2px)}
.btn--ghost{background:#fff;border-color:var(--green-700);color:var(--green-700)}
.btn--ghost:hover{background:var(--green-soft);color:var(--green-900)}
.btn--text{
  display:inline-flex;align-items:center;gap:6px;padding:0;height:auto;
  background:none;border:0;color:var(--green-700);font-size:15px;font-weight:600;
  text-decoration:underline;text-underline-offset:4px;cursor:pointer;
}
.btn--text:hover{color:var(--orange)}
.btn--text .arrow{transition:transform .18s ease}
.btn--text:hover .arrow{transform:translateX(4px)}
.btn--sm{height:40px;padding:0 16px;font-size:14px;border-radius:10px}
.btn:active{transform:scale(.98)}
.btn:disabled,.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none}

/* ---------- page hero ---------- */
.page-hero{padding:26px 0 0}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--faint);margin-bottom:18px;
}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--orange)}
.breadcrumb .sep{color:var(--line-strong)}
.breadcrumb .is-current{color:var(--green-700);font-weight:600}
.hero-grid{
  display:grid;grid-template-columns:1.4fr .9fr;gap:34px;align-items:center;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-xl);
  padding:34px;box-shadow:var(--shadow-sm);
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:600;letter-spacing:.06em;
  color:var(--orange-dark);background:var(--orange-soft);
  border-radius:6px;padding:5px 11px;
}
.hero-copy h1{
  font-size:clamp(30px,4vw,50px);line-height:1.15;margin:16px 0 14px;
}
.hero-sub{font-size:17px;color:var(--muted);line-height:1.85}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:10px 24px;
  margin-top:22px;padding-top:18px;border-top:1px solid var(--line);
}
.hero-meta li{display:flex;align-items:center;gap:7px;font-size:13.5px;color:var(--muted)}
.hero-meta svg{width:16px;height:16px;fill:none;stroke:var(--bronze);stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.hero-figure{
  margin:0;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow-sm);
}
.hero-figure img{width:100%;aspect-ratio:16/10;object-fit:cover}

/* ---------- sections ---------- */
.section{padding:72px 0}
.section--tight{padding:48px 0}
.section-head{margin-bottom:28px;max-width:720px}
.section-head h2{font-size:clamp(24px,2.6vw,32px)}
.section-head p{margin-top:10px;color:var(--muted);font-size:15.5px}

/* ---------- doc layout ---------- */
.layout-doc{display:grid;grid-template-columns:4fr 8fr;gap:34px;align-items:start}
.toc-card{
  position:sticky;top:96px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:22px;box-shadow:var(--shadow-sm);
}
.toc-title{
  font-size:13px;font-weight:700;letter-spacing:.14em;color:var(--bronze);
  font-family:var(--font-sans);
}
.toc-list{margin-top:14px;border-top:1px solid var(--line)}
.toc-list a{
  display:flex;gap:10px;align-items:flex-start;
  padding:11px 8px;font-size:14.5px;color:var(--muted);
  border-bottom:1px solid var(--line);border-radius:var(--r-sm);
  transition:background .18s ease,color .18s ease;
}
.toc-list a .num{font-family:var(--font-serif);color:var(--bronze);font-size:13.5px;line-height:1.7}
.toc-list a:hover{background:var(--green-soft);color:var(--green-900)}
.toc-list a.is-current{background:var(--green-soft);color:var(--green-900);font-weight:600}
.toc-card .btn{width:100%;margin-top:16px}

.doc-body{min-width:0}
.doc-section{margin-bottom:8px}
.doc-body h2{
  font-size:clamp(23px,2.4vw,31px);
  margin:46px 0 16px;padding-left:16px;border-left:4px solid var(--orange);
  scroll-margin-top:120px;
}
.doc-body .doc-section:first-child h2{margin-top:0}
.doc-body h3{font-size:20px;margin:26px 0 10px;color:var(--green-900)}
.doc-body p{margin-bottom:1.05em;color:#28322D;font-size:17px;line-height:1.95}
.doc-body strong{color:var(--green-900);font-weight:600}
.doc-list{margin:14px 0 20px}
.doc-list li{
  position:relative;padding-left:20px;margin:9px 0;
  font-size:16px;color:#33403A;line-height:1.9;
}
.doc-list li::before{
  content:"";position:absolute;left:2px;top:.78em;width:7px;height:7px;
  background:var(--bronze);border-radius:2px;transform:rotate(45deg);
}
.steps{display:grid;gap:14px;margin:20px 0 24px}
.step{
  display:grid;grid-template-columns:44px 1fr;gap:14px;
  background:var(--card);border:1px solid var(--line);border-radius:14px;
  padding:16px 18px;box-shadow:var(--shadow-sm);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.step:hover{transform:translateY(-3px);border-color:var(--green-700);box-shadow:var(--shadow-md)}
.step__num{
  width:40px;height:40px;border-radius:10px;
  background:var(--green-700);color:#fff;
  display:grid;place-items:center;
  font-family:var(--font-serif);font-size:17px;font-weight:700;
}
.step h4{font-size:16.5px;margin-bottom:4px}
.step p{font-size:15px;line-height:1.85;color:var(--muted);margin:0}
.note{
  display:flex;gap:12px;align-items:flex-start;
  border-radius:14px;padding:16px 18px;margin:20px 0;
  font-size:15px;line-height:1.85;border:1px solid;
}
.note svg{width:18px;height:18px;flex-shrink:0;margin-top:4px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.note--tip{background:var(--green-soft);border-color:#CBD9CE;color:#1F3A30}
.note--warn{background:var(--orange-soft);border-color:#F1C8B4;color:#7A3413}
.doc-figure{margin:22px 0}
.doc-figure img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:14px;border:1px solid var(--line);
  transition:transform .18s ease;
}
.doc-figure img:hover{transform:scale(1.03)}
.doc-figure figcaption{font-size:13px;color:var(--faint);margin-top:8px}
.table-wrap{overflow-x:auto;margin:20px 0;border-radius:var(--r-md);border:1px solid var(--line)}
.doc-table{width:100%;min-width:520px;font-size:15px;background:var(--card)}
.doc-table th{
  background:var(--green-soft);color:var(--green-900);
  text-align:left;padding:12px 16px;font-weight:600;
  border-bottom:1px solid var(--line);white-space:nowrap;
}
.doc-table td{
  padding:12px 16px;border-bottom:1px solid var(--line);color:var(--muted);
}
.doc-table tr:last-child td{border-bottom:0}
.doc-table tbody tr:hover td{background:#FAF8F2}

/* ---------- related ---------- */
.related-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:22px}
.related-card{
  display:flex;gap:14px;align-items:center;
  background:var(--card);border:1px solid var(--line);border-radius:14px;
  padding:16px;box-shadow:var(--shadow-sm);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.related-card:hover{transform:translateY(-3px);border-color:var(--green-700);box-shadow:var(--shadow-md);color:inherit}
.related-card img{width:96px;height:72px;object-fit:cover;border-radius:10px;flex-shrink:0}
.related-card h4{font-size:16px;margin-bottom:4px;color:var(--green-900)}
.related-card p{font-size:13.5px;color:var(--muted);line-height:1.75;margin:0}
.related-card .arrow{margin-left:auto;color:var(--bronze);flex-shrink:0;transition:transform .18s ease}
.related-card:hover .arrow{transform:translateX(4px);color:var(--orange)}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--green-900);
  border-radius:var(--r-xl);
  padding:38px 40px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  box-shadow:var(--shadow-lg);
  color:var(--paper);
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.4vw,28px);margin-bottom:8px}
.cta-band p{font-size:15px;color:#B9C6BE;max-width:520px;line-height:1.85}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;flex-shrink:0}
.cta-band .btn--ghost{background:transparent;border-color:rgba(247,244,236,.45);color:var(--paper)}
.cta-band .btn--ghost:hover{background:rgba(247,244,236,.12);color:#fff}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 34px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 0;background:none;border:0;cursor:pointer;text-align:left;
  font-size:17px;font-weight:600;color:var(--green-900);line-height:1.6;
  transition:color .18s ease;
}
.faq-q:hover{color:var(--orange-dark)}
.faq-icon{
  width:24px;height:24px;flex-shrink:0;border-radius:50%;
  border:1px solid var(--line-strong);display:grid;place-items:center;
  transition:transform .18s ease,background .18s ease,border-color .18s ease;
}
.faq-icon svg{width:14px;height:14px;fill:none;stroke:var(--green-700);stroke-width:1.6;stroke-linecap:round}
.faq-icon .v{transition:opacity .18s ease}
.faq-item.is-open .faq-icon{background:var(--orange);border-color:var(--orange);transform:rotate(180deg)}
.faq-item.is-open .faq-icon svg{stroke:#fff}
.faq-item.is-open .faq-icon .v{opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s ease}
.faq-a p{padding:0 0 18px;font-size:15px;line-height:1.9;color:var(--muted)}

/* ---------- footer ---------- */
.site-footer{background:var(--green-900);color:#EDEFE9;margin-top:72px;padding:56px 0 0}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:32px}
.footer-brand__name{
  display:block;font-family:var(--font-serif);font-size:20px;font-weight:700;
  color:#fff;margin-bottom:12px;
}
.footer-brand p{font-size:14px;line-height:1.9;color:#B9C6BE;max-width:320px}
.footer-col h4{font-size:14px;color:var(--bronze);margin-bottom:14px;font-family:var(--font-sans);letter-spacing:.04em}
.footer-col li a{
  display:inline-block;font-size:14px;line-height:2;color:#C7D2CA;
  transition:color .18s ease;
}
.footer-col li a:hover{color:var(--orange);text-decoration:underline;text-underline-offset:4px}
.footer-bottom{
  margin-top:40px;padding:18px 0;border-top:1px solid rgba(247,244,236,.14);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:13px;color:#93A39A;
}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .nav-toggle{display:inline-flex}
  .nav-shell{flex-wrap:wrap;gap:12px}
  .nav-cards{
    display:none;order:3;width:100%;flex-basis:100%;
    padding-top:6px;border-top:1px solid var(--line);
  }
  .nav-cards.is-open{display:grid;grid-template-columns:1fr 1fr;gap:8px;overflow:visible}
  .nav-card{justify-content:flex-start}
  .layout-doc{grid-template-columns:1fr;gap:26px}
  .toc-card{position:static}
  .toc-list{display:grid;grid-template-columns:1fr 1fr;gap:0 16px}
  .hero-grid{grid-template-columns:1fr;padding:26px;gap:24px}
  .hero-figure{order:-1}
  .section{padding:56px 0}
  .cta-band{flex-direction:column;align-items:flex-start;padding:30px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .hero-copy h1{font-size:32px}
  .hero-sub{font-size:15.5px}
  .section{padding:44px 0}
  .doc-body h2{font-size:23px}
  .doc-body p{font-size:16px;line-height:1.9}
  .faq-grid{grid-template-columns:1fr}
  .related-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .brand__text{font-size:16px}
  .site-footer{margin-top:56px}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .nav-shell{padding:10px 12px;border-radius:14px}
  .brand__seal{width:34px;height:34px;font-size:17px}
  .brand__text{font-size:15px}
  .nav-actions .btn--primary{display:none}
  .hero-grid{padding:20px;border-radius:var(--r-lg)}
  .hero-copy h1{font-size:28px}
  .hero-meta{gap:8px 16px}
  .toc-list{grid-template-columns:1fr}
  .step{grid-template-columns:1fr;gap:10px}
  .related-card{flex-direction:column;align-items:flex-start}
  .related-card img{width:100%;height:140px}
  .related-card .arrow{display:none}
  .cta-band{padding:24px;border-radius:var(--r-lg)}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column}
  .faq-q{font-size:16px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition:none!important;animation:none!important}
}

/* roulang page: category4 */
/* ========== 1. 设计变量 ========== */
:root{
  --green:#123B32;
  --green-dark:#0C2A23;
  --green-deep:#10231D;
  --orange:#E25822;
  --orange-dark:#C44716;
  --orange-soft:#FBE9E0;
  --bronze:#B98A3C;
  --paper:#F7F4EC;
  --card:#FFFFFF;
  --mist:#EEF2ED;
  --ink:#1B211E;
  --ink-2:#5F6B64;
  --ink-3:#8A948D;
  --line:#DED7C8;
  --line-strong:#C9C0AC;
  --err:#C0392B;
  --ok:#2F6B4F;
  --r-s:8px;
  --r-m:12px;
  --r-l:18px;
  --r-xl:24px;
  --sh-s:0 1px 2px rgba(16,35,29,.06);
  --sh-m:0 10px 30px rgba(16,35,29,.08);
  --sh-l:0 24px 60px rgba(16,35,29,.12);
  --sec:88px;
  --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",SimSun,serif;
  --ease:180ms ease;
}

/* ========== 2. 基础重置 ========== */
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.9;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--green);text-decoration:none;}
button{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0;}
ul,ol{list-style:none;}
[hidden]{display:none !important;}
::selection{background:var(--orange-soft);color:var(--orange-dark);}

:focus-visible{outline:3px solid rgba(226,88,34,.45);outline-offset:2px;border-radius:6px;}

.sr-only{
  position:absolute;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;
}
.skip-link{
  position:absolute;left:16px;top:-70px;z-index:300;
  background:var(--green);color:#fff;padding:11px 20px;
  border-radius:var(--r-s);font-size:14px;font-weight:600;
  transition:top var(--ease);
}
.skip-link:focus{top:14px;}

/* ========== 3. 容器与通用区块 ========== */
.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 24px;
}
.section{padding-top:var(--sec);}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:28px;
}
.section-head h2{
  font-family:var(--font-serif);
  font-size:clamp(24px,2.6vw,32px);
  line-height:1.28;
  font-weight:700;
  color:var(--ink);
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:12.5px;
  font-weight:600;
  letter-spacing:.16em;
  color:var(--bronze);
  margin-bottom:14px;
}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--bronze);}

.link-more{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14.5px;font-weight:600;color:var(--green);
  border-bottom:1px solid transparent;
  transition:color var(--ease),border-color var(--ease);
}
.link-more svg{
  width:16px;height:16px;fill:none;stroke:currentColor;
  stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;
  transition:transform var(--ease);
}
.link-more:hover{color:var(--orange);border-color:var(--orange);}
.link-more:hover svg{transform:translateX(4px);}

/* ========== 4. 按钮 ========== */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 22px;
  border-radius:11px;
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1;
  cursor:pointer;
  transition:background var(--ease),color var(--ease),border-color var(--ease),
             transform var(--ease),box-shadow var(--ease),opacity var(--ease);
}
.btn svg{width:17px;height:17px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;}
.btn--primary{background:var(--orange);color:#fff;box-shadow:0 6px 16px rgba(226,88,34,.22);}
.btn--primary:hover{background:var(--orange-dark);transform:translateY(-2px);box-shadow:0 10px 22px rgba(226,88,34,.28);}
.btn--primary:active{transform:scale(.98);}
.btn--ghost{background:#fff;color:var(--green);border-color:var(--green);}
.btn--ghost:hover{background:var(--mist);transform:translateY(-2px);}
.btn--ghost:active{transform:scale(.98);}
.btn--light{background:rgba(247,244,236,.12);color:var(--paper);border-color:rgba(247,244,236,.4);}
.btn--light:hover{background:rgba(247,244,236,.2);transform:translateY(-2px);}
.btn[disabled]{opacity:.42;cursor:not-allowed;transform:none;box-shadow:none;}
.btn.is-loading .btn__label{opacity:.75;}
.btn.is-loading::after{
  content:"";
  width:15px;height:15px;border-radius:50%;
  border:2px solid rgba(255,255,255,.45);
  border-top-color:#fff;
  animation:spin .7s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg);}}

/* ========== 5. 顶部导航 ========== */
.site-header{
  position:sticky;
  top:0;
  z-index:90;
  padding:14px 0;
  background:var(--paper);
  transition:box-shadow .2s ease;
}
.site-header.is-stuck{box-shadow:0 10px 28px rgba(16,35,29,.12);}
.nav-shell{
  position:relative;
  display:flex;
  align-items:center;
  gap:18px;
  padding:12px 16px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-l);
  box-shadow:var(--sh-m);
  transition:box-shadow .2s ease,border-color .2s ease;
}
.site-header.is-stuck .nav-shell{border-color:var(--line-strong);}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  color:var(--green);
}
.brand__mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:38px;height:38px;
  border-radius:10px;
  background:var(--green);
  color:var(--paper);
  border:1px solid var(--green-dark);
  flex:0 0 auto;
}
.brand__mark svg{width:20px;height:20px;}
.brand__text{display:flex;flex-direction:column;line-height:1.2;}
.brand__text strong{
  font-family:var(--font-serif);
  font-size:18px;
  font-weight:700;
  letter-spacing:.01em;
  white-space:nowrap;
}
.brand__text em{
  font-style:normal;
  font-size:11.5px;
  color:var(--ink-3);
  letter-spacing:.06em;
  margin-top:3px;
}
.nav-cards{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:6px;
  flex:1 1 auto;
}
.nav-card{
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:9px 13px;
  border-radius:10px;
  border:1px solid transparent;
  font-size:14px;
  font-weight:600;
  color:var(--ink-2);
  white-space:nowrap;
  transition:background var(--ease),color var(--ease),border-color var(--ease);
}
.nav-card svg{
  width:18px;height:18px;fill:none;stroke:currentColor;
  stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;
}
.nav-card:hover{background:var(--mist);color:var(--green);}
.nav-card.is-active{
  background:var(--green);
  color:var(--paper);
  border-color:var(--green-dark);
  box-shadow:inset 0 -3px 0 var(--orange);
}
.nav-card.is-active:hover{background:var(--green-dark);color:#fff;}
.nav-card--cta{display:none;}
.nav-actions{
  display:flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
}
.nav-cta{height:42px;padding:0 18px;font-size:14px;border-radius:10px;}
.nav-toggle{
  display:none;
  align-items:center;
  justify-content:center;
  width:42px;height:42px;
  border:1px solid var(--line);
  border-radius:10px;
  background:#fff;
  color:var(--green);
  cursor:pointer;
  transition:background var(--ease),border-color var(--ease);
}
.nav-toggle:hover{background:var(--mist);border-color:var(--line-strong);}
.nav-toggle svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;}

/* ========== 6. 面包屑 ========== */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--ink-3);
  margin-bottom:20px;
}
.breadcrumb a{color:var(--ink-2);transition:color var(--ease);}
.breadcrumb a:hover{color:var(--orange);}
.breadcrumb .sep{color:var(--line-strong);}
.breadcrumb [aria-current]{color:var(--green);font-weight:600;}

/* ========== 7. 首屏 ========== */
.hero-help{
  position:relative;
  overflow:hidden;
  padding:34px 0 56px;
  color:var(--paper);
  background:
    radial-gradient(760px 340px at 88% -12%, rgba(185,138,60,.22), transparent 62%),
    linear-gradient(152deg,#0C2A23 0%,#123B32 58%,#173F35 100%);
}
.hero-help::after{
  content:"";
  position:absolute;
  right:-120px;bottom:-180px;
  width:460px;height:460px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(226,88,34,.18),transparent 66%);
  pointer-events:none;
}
.hero-help .container{position:relative;z-index:2;}
.hero-help .breadcrumb{color:rgba(247,244,236,.55);}
.hero-help .breadcrumb a{color:rgba(247,244,236,.8);}
.hero-help .breadcrumb a:hover{color:#fff;}
.hero-help .breadcrumb .sep{color:rgba(247,244,236,.3);}
.hero-help .breadcrumb [aria-current]{color:var(--paper);}
.hero-help .eyebrow{color:var(--bronze);}
.hero-help .eyebrow::before{background:var(--bronze);}
.hero-grid{
  display:grid;
  grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);
  gap:48px;
  align-items:center;
}
.hero-help h1{
  font-family:var(--font-serif);
  font-size:clamp(30px,3.6vw,48px);
  line-height:1.18;
  font-weight:700;
  letter-spacing:.01em;
  margin-bottom:18px;
}
.hero-lead{
  font-size:17px;
  line-height:1.9;
  color:rgba(247,244,236,.78);
  max-width:34em;
}
.hero-meta{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:26px;
}
.hero-meta li{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:8px 14px;
  border-radius:10px;
  border:1px solid rgba(247,244,236,.22);
  background:rgba(247,244,236,.07);
  font-size:13px;
  color:rgba(247,244,236,.85);
}
.hero-meta li b{
  font-family:var(--font-serif);
  font-size:16px;
  color:var(--paper);
  font-weight:700;
}
.hero-meta svg{
  width:16px;height:16px;fill:none;stroke:var(--bronze);
  stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;
}
.hero-media{position:relative;padding:0 14px 14px 0;}
.hero-media::after{
  content:"";
  position:absolute;
  left:14px;top:14px;right:0;bottom:0;
  border:1px solid rgba(185,138,60,.55);
  border-radius:var(--r-l);
  pointer-events:none;
}
.hero-media img{
  position:relative;
  z-index:1;
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  border-radius:var(--r-l);
  border:1px solid rgba(247,244,236,.18);
  box-shadow:var(--sh-l);
}

/* ========== 8. 筛选条 ========== */
.filter-wrap{position:relative;z-index:6;margin-top:-34px;}
.filter-bar{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:14px;
  padding:18px 20px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-l);
  box-shadow:var(--sh-m);
}
.search-field{position:relative;flex:1 1 260px;min-width:200px;}
.search-field input{
  width:100%;
  height:46px;
  padding:0 44px 0 14px;
  border:1px solid var(--line);
  border-radius:10px;
  background:#fff;
  font-family:inherit;
  font-size:15px;
  color:var(--ink);
  transition:border-color var(--ease),box-shadow var(--ease);
}
.search-field input::placeholder{color:var(--ink-3);}
.search-field input:focus{
  outline:none;
  border-color:var(--green);
  box-shadow:0 0 0 3px rgba(18,59,50,.15);
}
.search-field svg{
  position:absolute;right:14px;top:50%;transform:translateY(-50%);
  width:18px;height:18px;fill:none;stroke:var(--ink-3);
  stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;
  pointer-events:none;
}
.chips{display:flex;flex-wrap:wrap;gap:8px;}
.chip{
  padding:8px 14px;
  border:1px solid var(--line);
  border-radius:9px;
  background:#fff;
  color:var(--ink-2);
  font-size:13.5px;
  font-weight:600;
  cursor:pointer;
  transition:background var(--ease),color var(--ease),border-color var(--ease);
}
.chip:hover{background:var(--mist);color:var(--green);border-color:var(--line-strong);}
.chip.is-active{background:var(--green);color:var(--paper);border-color:var(--green-dark);}
.filter-count{
  flex:0 0 auto;
  font-size:13px;
  color:var(--ink-3);
  margin-left:auto;
}

/* ========== 9. 主体两栏 ========== */
.help-layout{
  display:grid;
  grid-template-columns:minmax(0,3fr) minmax(0,9fr);
  gap:32px;
  align-items:start;
  padding-top:44px;
}
.help-side{
  position:sticky;
  top:104px;
  display:grid;
  gap:20px;
}
.side-nav{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-l);
  box-shadow:var(--sh-s);
  padding:20px;
}
.side-nav h2{
  font-family:var(--font-serif);
  font-size:16px;
  font-weight:700;
  color:var(--ink);
  margin-bottom:14px;
  padding-bottom:12px;
  border-bottom:1px solid var(--line);
}
.side-nav ul{display:grid;gap:4px;}
.side-nav a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding:10px 12px;
  border-radius:10px;
  border:1px solid transparent;
  font-size:14.5px;
  font-weight:500;
  color:var(--ink-2);
  transition:background var(--ease),color var(--ease),border-color var(--ease);
}
.side-nav a em{
  font-style:normal;
  font-size:12.5px;
  color:var(--ink-3);
  font-variant-numeric:tabular-nums;
}
.side-nav a:hover{background:var(--mist);color:var(--green);}
.side-nav a.is-active{
  background:var(--orange-soft);
  border-color:rgba(226,88,34,.28);
  color:var(--orange-dark);
  font-weight:600;
}
.side-nav a.is-active em{color:var(--orange-dark);}
.side-tip{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-l);
  box-shadow:var(--sh-s);
  overflow:hidden;
}
.side-tip img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
}
.side-tip__body{padding:18px;}
.side-tip p{
  font-size:13.5px;
  line-height:1.85;
  color:var(--ink-2);
  margin-bottom:12px;
}

/* ========== 10. FAQ 分组与手风琴 ========== */
.faq-group{margin-bottom:40px;scroll-margin-top:120px;}
.faq-group:last-child{margin-bottom:0;}
.faq-group__head{
  display:flex;
  align-items:center;
  gap:14px;
  margin-bottom:8px;
}
.faq-group__num{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:38px;height:38px;
  border-radius:10px;
  border:1px solid var(--line-strong);
  font-family:var(--font-serif);
  font-size:16px;
  font-weight:700;
  color:var(--bronze);
  flex:0 0 auto;
}
.faq-group h2{
  font-family:var(--font-serif);
  font-size:clamp(20px,2.1vw,24px);
  line-height:1.3;
  font-weight:700;
  color:var(--ink);
}
.faq-group__desc{
  font-size:14px;
  line-height:1.8;
  color:var(--ink-3);
  margin:0 0 16px 52px;
}
.faq-panel{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-l);
  box-shadow:var(--sh-s);
  overflow:hidden;
}
.faq-item + .faq-item{border-top:1px solid var(--line);}
.faq-q{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  width:100%;
  padding:18px 22px;
  border:0;
  background:transparent;
  text-align:left;
  font-size:17px;
  font-weight:600;
  line-height:1.6;
  color:var(--ink);
  cursor:pointer;
  transition:background var(--ease),color var(--ease);
}
.faq-q:hover{background:var(--mist);color:var(--green);}
.faq-q[aria-expanded="true"]{color:var(--green);}
.faq-icon{
  flex:0 0 auto;
  width:24px;height:24px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:50%;
  border:1px solid var(--line-strong);
  color:var(--green);
  transition:background var(--ease),border-color var(--ease),transform var(--ease);
}
.faq-icon svg{width:13px;height:13px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;}
.faq-q[aria-expanded="true"] .faq-icon{background:var(--orange-soft);border-color:var(--orange);color:var(--orange-dark);}
.faq-q[aria-expanded="true"] .faq-icon .v-line{display:none;}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .18s ease;
}
.faq-a__inner{
  padding:0 22px 20px;
  font-size:15px;
  line-height:1.9;
  color:var(--ink-2);
}
.faq-a__inner strong{color:var(--ink);font-weight:600;}

.empty-state{
  display:grid;
  justify-items:center;
  gap:12px;
  padding:48px 24px;
  margin-top:24px;
  border:1px dashed var(--line-strong);
  border-radius:var(--r-l);
  background:rgba(255,255,255,.6);
  text-align:center;
}
.empty-state svg{
  width:34px;height:34px;fill:none;stroke:var(--ink-3);
  stroke-width:1.4;stroke-linecap:round;stroke-linejoin:round;
}
.empty-state p{font-size:14.5px;color:var(--ink-2);}

/* ========== 11. 提交问题表单 ========== */
.ask-card{
  margin-top:var(--sec);
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1.15fr);
  gap:40px;
  padding:40px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-xl);
  box-shadow:var(--sh-m);
  scroll-margin-top:120px;
}
.ask-info h2{
  font-family:var(--font-serif);
  font-size:clamp(24px,2.6vw,30px);
  line-height:1.28;
  font-weight:700;
  margin-bottom:14px;
}
.ask-info p{
  font-size:15.5px;
  line-height:1.95;
  color:var(--ink-2);
  margin-bottom:12px;
}
.ask-points{display:grid;gap:10px;margin-top:20px;}
.ask-points li{
  display:flex;
  align-items:flex-start;
  gap:10px;
  font-size:14.5px;
  line-height:1.8;
  color:var(--ink-2);
}
.ask-points svg{
  flex:0 0 auto;
  width:17px;height:17px;margin-top:4px;
  fill:none;stroke:var(--ok);stroke-width:1.7;
  stroke-linecap:round;stroke-linejoin:round;
}
.ask-form{max-width:560px;}
.field{margin-bottom:18px;}
.field label{
  display:block;
  font-size:14px;
  font-weight:600;
  color:var(--ink);
  margin-bottom:8px;
}
.field input,
.field textarea{
  width:100%;
  border:1px solid var(--line);
  border-radius:10px;
  background:#fff;
  font-family:inherit;
  font-size:15px;
  color:var(--ink);
  transition:border-color var(--ease),box-shadow var(--ease);
}
.field input{height:46px;padding:0 14px;}
.field textarea{
  min-height:124px;
  padding:12px 14px;
  line-height:1.8;
  resize:vertical;
}
.field input::placeholder,
.field textarea::placeholder{color:var(--ink-3);}
.field input:focus,
.field textarea:focus{
  outline:none;
  border-color:var(--green);
  box-shadow:0 0 0 3px rgba(18,59,50,.15);
}
.field__msg{
  display:none;
  margin-top:7px;
  font-size:13px;
  line-height:1.6;
  color:var(--err);
}
.field.is-invalid input,
.field.is-invalid textarea{
  border-color:var(--err);
  box-shadow:0 0 0 3px rgba(192,57,43,.12);
}
.field.is-invalid .field__msg{display:block;}
.field.is-valid input,
.field.is-valid textarea{border-color:var(--ok);}
.form-note{
  font-size:13px;
  line-height:1.8;
  color:var(--ink-3);
  margin-top:14px;
}
.form-success{
  display:flex;
  align-items:flex-start;
  gap:10px;
  margin-top:16px;
  padding:14px 16px;
  border:1px solid rgba(47,107,79,.3);
  border-radius:12px;
  background:rgba(47,107,79,.08);
  font-size:14px;
  line-height:1.8;
  color:var(--ok);
}
.form-success svg{
  flex:0 0 auto;width:18px;height:18px;margin-top:3px;
  fill:none;stroke:var(--ok);stroke-width:1.8;
  stroke-linecap:round;stroke-linejoin:round;
}

/* ========== 12. 热门问题 ========== */
.hot-list{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-l);
  box-shadow:var(--sh-s);
  overflow:hidden;
}
.hot-list li + li{border-top:1px solid var(--line);}
.hot-list a{
  display:flex;
  align-items:center;
  gap:18px;
  padding:18px 22px;
  color:var(--ink);
  transition:background var(--ease);
}
.hot-list a:hover{background:#F1F5F0;}
.hot-list__num{
  font-family:var(--font-serif);
  font-size:24px;
  font-weight:700;
  line-height:1;
  color:var(--bronze);
  flex:0 0 auto;
  transition:color var(--ease);
}
.hot-list a:hover .hot-list__num{color:var(--orange);}
.hot-list__body{flex:1 1 auto;min-width:0;}
.hot-list__body strong{
  display:block;
  font-size:16.5px;
  font-weight:600;
  line-height:1.6;
  color:var(--ink);
}
.hot-list__body em{
  display:block;
  font-style:normal;
  font-size:13px;
  color:var(--ink-3);
  margin-top:4px;
}
.hot-list__arrow{
  flex:0 0 auto;
  width:18px;height:18px;
  fill:none;stroke:var(--ink-3);
  stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;
  transition:transform var(--ease),stroke var(--ease);
}
.hot-list a:hover .hot-list__arrow{transform:translateX(4px);stroke:var(--orange);}

/* ========== 13. 收尾 CTA ========== */
.final-cta{
  position:relative;
  overflow:hidden;
  margin-top:var(--sec);
  padding:44px;
  border-radius:var(--r-xl);
  color:var(--paper);
  background:
    radial-gradient(560px 260px at 92% 0%, rgba(185,138,60,.24), transparent 65%),
    linear-gradient(140deg,#0C2A23 0%,#123B32 100%);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:26px;
}
.final-cta h2{
  font-family:var(--font-serif);
  font-size:clamp(22px,2.4vw,28px);
  line-height:1.3;
  font-weight:700;
  margin-bottom:10px;
}
.final-cta p{
  font-size:15px;
  line-height:1.9;
  color:rgba(247,244,236,.78);
  max-width:36em;
}
.final-cta__actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ========== 14. 页脚 ========== */
.site-footer{
  margin-top:var(--sec);
  padding:64px 0 0;
  background:var(--green-deep);
  color:var(--paper);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:32px;
}
.footer-brand__name{
  font-family:var(--font-serif);
  font-size:20px;
  font-weight:700;
  color:#fff;
  letter-spacing:.02em;
}
.footer-brand p{
  margin-top:12px;
  max-width:32ch;
  font-size:14px;
  line-height:1.9;
  color:rgba(247,244,236,.68);
}
.footer-col h4{
  font-size:14px;
  font-weight:600;
  letter-spacing:.06em;
  color:var(--bronze);
  margin-bottom:14px;
}
.footer-col a{
  display:inline-block;
  font-size:14px;
  line-height:2;
  color:rgba(247,244,236,.78);
  transition:color var(--ease);
}
.footer-col a:hover{
  color:var(--orange);
  text-decoration:underline;
  text-underline-offset:4px;
}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:12px;
  margin-top:48px;
  padding:22px 0 28px;
  border-top:1px solid rgba(247,244,236,.16);
  font-size:13px;
  color:rgba(247,244,236,.6);
}

/* ========== 15. 返回顶部 ========== */
.back-top{
  position:fixed;
  right:24px;
  bottom:28px;
  z-index:70;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:48px;height:48px;
  border-radius:14px;
  border:1px solid var(--green-dark);
  background:var(--green);
  color:var(--paper);
  box-shadow:var(--sh-m);
  cursor:pointer;
  opacity:0;
  visibility:hidden;
  transform:translateY(10px);
  transition:opacity var(--ease),transform var(--ease),visibility var(--ease),background var(--ease);
}
.back-top.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.back-top:hover{background:var(--green-dark);}
.back-top svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}

/* ========== 16. 响应式 ========== */
@media (max-width:1100px){
  .nav-card{padding:8px 11px;font-size:13.5px;}
  .brand__text strong{font-size:17px;}
}

@media (max-width:991px){
  :root{--sec:64px;}
  .container{padding:0 20px;}
  .nav-shell{flex-wrap:wrap;gap:12px;padding:12px;}
  .nav-cards{
    display:none;
    order:3;
    flex:1 1 100%;
    width:100%;
    display:none;
    grid-template-columns:1fr 1fr;
    gap:8px;
    padding-top:12px;
    border-top:1px solid var(--line);
  }
  .nav-cards.is-open{display:grid;}
  .nav-card{justify-content:flex-start;padding:11px 12px;font-size:14px;}
  .nav-card--cta{
    display:flex;
    grid-column:1 / -1;
    justify-content:center;
    background:var(--orange);
    color:#fff;
    border-color:var(--orange);
    margin-top:4px;
  }
  .nav-card--cta:hover{background:var(--orange-dark);color:#fff;}
  .nav-toggle{display:inline-flex;}
  .nav-cta{display:none;}
  .nav-actions{margin-left:auto;}
  .hero-grid{grid-template-columns:1fr;gap:32px;}
  .hero-media{padding:0 10px 10px 0;}
  .help-layout{grid-template-columns:1fr;gap:28px;padding-top:32px;}
  .help-side{position:static;grid-template-columns:1fr;order:-1;}
  .side-tip{display:none;}
  .ask-card{grid-template-columns:1fr;gap:28px;padding:28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}

@media (max-width:768px){
  :root{--sec:48px;}
  body{font-size:15.5px;}
  .brand__text strong{font-size:16px;}
  .brand__text em{display:none;}
  .hero-help{padding:26px 0 48px;}
  .hero-lead{font-size:15.5px;}
  .hero-meta li{font-size:12.5px;padding:7px 12px;}
  .filter-bar{padding:16px;}
  .filter-count{margin-left:0;width:100%;}
  .faq-q{font-size:16px;padding:16px 18px;}
  .faq-a__inner{padding:0 18px 18px;font-size:14.5px;}
  .faq-group__desc{margin-left:0;}
  .ask-card{padding:24px;}
  .final-cta{padding:30px 24px;}
  .hot-list a{padding:15px 18px;gap:14px;}
  .hot-list__body strong{font-size:15.5px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;}
}

@media (max-width:520px){
  .container{padding:0 16px;}
  .hero-help h1{font-size:29px;}
  .nav-cards{grid-template-columns:1fr;}
  .btn{width:100%;}
  .nav-cta,.nav-toggle{width:auto;}
  .filter-bar{flex-direction:column;align-items:stretch;}
  .chips{gap:6px;}
  .chip{font-size:13px;padding:7px 12px;}
  .final-cta__actions{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .back-top{right:16px;bottom:18px;width:44px;height:44px;}
  .hot-list__num{font-size:20px;}
}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
}