/* roulang page: index */
:root{
  --brand-900:#0F312A;
  --brand-700:#1F4B3F;
  --brand-500:#2F6B58;
  --accent-500:#C9632F;
  --accent-100:#F7E8DE;
  --ink-900:#161A18;
  --ink-600:#5B645F;
  --ink-400:#8C948F;
  --bg:#F7F5F0;
  --surface:#FFFFFF;
  --line:#E4DED3;
  --radius-xs:6px;
  --radius-sm:10px;
  --radius-md:16px;
  --radius-lg:24px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(22,26,24,.04), 0 10px 24px -14px rgba(22,26,24,.18);
  --shadow-2:0 2px 4px rgba(22,26,24,.05), 0 22px 48px -20px rgba(22,26,24,.26);
  --sp-1:8px; --sp-2:12px; --sp-3:16px; --sp-4:24px; --sp-5:32px; --sp-6:48px; --sp-7:72px; --sp-8:96px;
  --ease:cubic-bezier(.22,.61,.36,1);

  --bs-primary:#1F4B3F;
  --bs-body-bg:#F7F5F0;
  --bs-body-color:#161A18;
  --bs-border-color:#E4DED3;
  --bs-border-radius:16px;
  --bs-border-radius-lg:24px;
  --bs-link-color:#1F4B3F;
  --bs-link-hover-color:#C9632F;
  --bs-font-sans-serif:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --bs-body-font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--ink-900);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;line-height:1.75;text-align:left;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand-700);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--accent-500);text-decoration:underline;text-underline-offset:2px}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-0.02em;color:var(--ink-900)}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--brand-700);outline-offset:2px}
.container,.container-fluid{max-width:1200px;padding-left:20px;padding-right:20px;margin:0 auto}
@media (min-width:768px){.container,.container-fluid{padding-left:28px;padding-right:28px}}
@media (min-width:1400px){.container,.container-fluid{max-width:1280px}}
.section{padding:56px 0}
@media (min-width:992px){.section{padding:96px 0}}
.section-tight{padding:48px 0}
.eyebrow{font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--brand-500);font-weight:600;margin-bottom:12px}
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:32px}
.sec-head h2{font-size:clamp(1.5rem,2.6vw,2.1rem);line-height:1.25}
.sec-head .sub{margin-top:12px;color:var(--ink-600);font-size:15px;max-width:620px}
.btn-brand,.btn-accent,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--radius-pill);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:all .2s var(--ease);text-decoration:none;white-space:nowrap;
}
.btn-accent{background:var(--accent-500);color:#fff}
.btn-accent:hover{background:#B8561F;color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);text-decoration:none}
.btn-accent:active{transform:translateY(0)}
.btn-brand{background:var(--brand-700);color:#fff}
.btn-brand:hover{background:var(--brand-900);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);text-decoration:none}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink-900)}
.btn-ghost:hover{border-color:var(--brand-700);color:var(--brand-700);text-decoration:none}
.btn-link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-700)}
.btn-link-arrow .arw{transition:transform .2s var(--ease)}
.btn-link-arrow:hover{color:var(--accent-500);text-decoration:none}
.btn-link-arrow:hover .arw{transform:translateX(4px)}
.badge-cat{display:inline-flex;align-items:center;background:var(--accent-100);color:var(--accent-500);
  font-size:12px;font-weight:600;padding:4px 10px;border-radius:var(--radius-pill);line-height:1.6}
.badge-rank{display:inline-flex;align-items:center;background:var(--brand-900);color:#fff;
  font-size:12px;font-weight:600;padding:4px 10px;border-radius:var(--radius-pill)}
.badge-state{display:inline-flex;align-items:center;background:rgba(47,107,88,.1);color:var(--brand-700);
  font-size:12px;font-weight:600;padding:4px 10px;border-radius:var(--radius-pill)}

/* 导航 */
.site-nav{position:sticky;top:0;z-index:1040;background:rgba(247,245,240,.92);backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;transition:border-color .25s var(--ease),box-shadow .25s var(--ease)}
.site-nav.scrolled{border-bottom-color:var(--line);box-shadow:var(--shadow-1)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:68px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;flex:0 0 auto}
.brand:hover{text-decoration:none}
.brand-mark{width:22px;height:22px;background:var(--brand-700);border-radius:4px;transform:rotate(45deg);
  position:relative;display:inline-block;flex:0 0 auto;transition:background .2s var(--ease)}
.brand-mark::after{content:"";position:absolute;left:4px;top:10px;width:14px;height:2px;background:var(--bg);border-radius:2px;transform:rotate(-45deg)}
.brand-name{font-size:19px;font-weight:700;color:var(--ink-900);letter-spacing:-0.01em}
.brand:hover .brand-mark{background:var(--accent-500)}
.nav-chips{display:flex;gap:4px;background:var(--bg);border:1px solid var(--line);border-radius:var(--radius-pill);padding:4px;
  overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none}
.nav-chips::-webkit-scrollbar{display:none}
.chip{padding:8px 16px;border-radius:var(--radius-pill);font-size:14px;color:var(--ink-600);white-space:nowrap;
  transition:all .22s var(--ease)}
.chip:hover{color:var(--brand-700);text-decoration:none}
.chip.active{background:#fff;color:var(--brand-700);font-weight:600;box-shadow:var(--shadow-1)}
.nav-right{display:flex;align-items:center;gap:16px;flex:0 0 auto}
.nav-divider{width:1px;height:24px;background:var(--line);display:block}
.nav-toggle{display:none;width:40px;height:40px;border:1px solid var(--line);border-radius:var(--radius-sm);
  background:var(--surface);align-items:center;justify-content:center;flex-direction:column;gap:4px;cursor:pointer}
.nav-toggle span{display:block;width:16px;height:2px;background:var(--ink-900);border-radius:2px}
.drawer{background:var(--bg);width:86%;max-width:340px}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:20px 24px;border-bottom:1px solid var(--line)}
.drawer-list{list-style:none;margin:0;padding:12px 24px}
.drawer-list li{border-bottom:1px solid var(--line)}
.drawer-list a{display:block;padding:16px 0;font-size:16px;color:var(--ink-900);font-weight:500}
.drawer-list a.active{color:var(--brand-700);font-weight:700}
.drawer-cta{padding:20px 24px}
.drawer-cta .btn-accent{width:100%}
@media (max-width:991px){
  .nav-inner{height:60px;gap:12px}
  .nav-right .btn-accent,.nav-right .nav-divider{display:none}
  .nav-toggle{display:flex}
  .brand-name{font-size:17px}
  .nav-chips{padding:3px}
  .chip{padding:7px 13px;font-size:13px}
}
@media (max-width:575px){
  .nav-chips{max-width:52vw}
}

/* Hero */
.hero{position:relative;padding:40px 0 56px;background-image:radial-gradient(rgba(22,26,24,.05) 1px,transparent 1px);background-size:22px 22px}
.hero-grid{display:grid;grid-template-columns:1fr;gap:32px;align-items:center}
@media (min-width:992px){
  .hero{padding:56px 0 88px}
  .hero-grid{grid-template-columns:1.05fr .95fr;gap:56px;min-height:560px}
}
.hero h1{font-size:clamp(2rem,4.2vw,3.4rem);line-height:1.15;font-weight:700;letter-spacing:-0.02em}
.hero-lead{margin-top:16px;font-size:17px;color:var(--ink-600);max-width:34em}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-note{margin-top:16px;font-size:12px;color:var(--ink-400);letter-spacing:.01em}
.hero-media{position:relative}
.hero-media img{width:100%;aspect-ratio:16/10;object-fit:cover;object-position:center;border-radius:var(--radius-lg);box-shadow:var(--shadow-2)}
.float-card{position:absolute;left:16px;bottom:-22px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-md);box-shadow:var(--shadow-2);padding:14px 18px;display:flex;align-items:center;gap:12px}
.float-card .fc-num{font-size:22px;font-weight:700;color:var(--brand-700);line-height:1}
.float-card .fc-txt{font-size:13px;color:var(--ink-600)}
@media (max-width:575px){
  .hero-actions .btn-accent,.hero-actions .btn-ghost{width:100%}
  .float-card{left:12px;bottom:-18px;padding:12px 14px}
}

/* 信任条 */
.trust{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.trust-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:0}
.trust-item{padding:28px 20px;border-right:1px solid var(--line);border-bottom:1px solid var(--line)}
.trust-item:nth-child(2n){border-right:0}
.trust-item:nth-child(3),.trust-item:nth-child(4){border-bottom:0}
.trust-num{font-size:28px;font-weight:700;color:var(--brand-700);line-height:1.1;letter-spacing:-0.01em}
.trust-label{font-size:12px;color:var(--ink-600);margin-top:6px;letter-spacing:.01em}
@media (min-width:768px){
  .trust-grid{grid-template-columns:repeat(4,1fr)}
  .trust-item{border-bottom:0;padding:36px 24px}
  .trust-item:nth-child(2n){border-right:1px solid var(--line)}
  .trust-item:last-child{border-right:0}
  .trust-num{font-size:36px}
}

/* 对比表 */
.cmp-wrap{overflow-x:auto;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-md);box-shadow:var(--shadow-1)}
table.cmp{width:100%;min-width:760px;border-collapse:separate;border-spacing:0;font-size:15px}
table.cmp th,table.cmp td{padding:0 20px;text-align:center;height:56px;vertical-align:middle;border-bottom:1px solid var(--line)}
table.cmp thead th{position:sticky;top:0;z-index:3;background:var(--brand-900);color:#fff;
  font-size:11px;letter-spacing:.06em;font-weight:600;height:60px}
table.cmp thead th .th-sub{display:block;font-size:11px;font-weight:400;color:rgba(255,255,255,.72);letter-spacing:.02em;margin-top:2px}
table.cmp th:first-child,table.cmp td:first-child{position:sticky;left:0;z-index:2;background:var(--surface);text-align:left;
  font-weight:600;color:var(--ink-900);box-shadow:8px 0 12px -12px rgba(22,26,24,.35)}
table.cmp thead th:first-child{z-index:4;background:var(--brand-900);color:#fff}
table.cmp tbody tr:nth-child(odd) td{background:var(--bg)}
table.cmp tbody tr:nth-child(odd) td:first-child{background:var(--bg)}
table.cmp tbody tr:hover td{background:rgba(31,75,63,.06)}
table.cmp tbody tr:last-child td{border-bottom:0}
.cmp .yes{color:var(--brand-500);font-weight:700}
.cmp .no{color:var(--ink-400)}
table.cmp .col-premium{border-left:1px solid rgba(201,99,47,.45);border-right:1px solid rgba(201,99,47,.45)}
table.cmp thead th.col-premium{position:sticky;top:0}
.th-tag{display:inline-block;background:var(--accent-500);color:#fff;font-size:11px;padding:2px 8px;
  border-radius:var(--radius-pill);margin-left:6px;letter-spacing:0;vertical-align:middle}
.cmp-foot{margin-top:16px;font-size:13px;color:var(--ink-400)}

/* 等级卡 */
.rank-grid{display:grid;grid-template-columns:1fr;gap:24px}
@media (min-width:768px){.rank-grid{grid-template-columns:repeat(3,1fr);gap:20px}}
@media (min-width:992px){.rank-grid{gap:28px;align-items:start}}
.ui-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-md);
  box-shadow:var(--shadow-1);padding:24px;transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease)}
.rank-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(31,75,63,.35)}
.rank-idx{font-size:32px;font-weight:700;color:var(--bg);-webkit-text-stroke:1px var(--line);line-height:1;letter-spacing:-0.02em}
.rank-name{font-size:20px;font-weight:700;margin-top:14px}
.rank-pos{margin-top:8px;font-size:14px;color:var(--ink-600)}
.rank-list{list-style:none;margin:20px 0 0;padding:0;border-top:1px solid var(--line);padding-top:16px}
.rank-list li{display:flex;gap:8px;font-size:14px;color:var(--ink-600);padding:7px 0}
.rank-list li::before{content:"✓";color:var(--brand-500);font-weight:700;flex:0 0 auto}
.rank-card .btn-link-arrow{margin-top:18px}
@media (min-width:768px){
  .rank-card.is-mid{transform:translateY(-24px) scale(1.02)}
  .rank-card.is-mid:hover{transform:translateY(-28px) scale(1.02)}
}

/* 专属内容 */
.mag-grid{display:grid;grid-template-columns:1fr;gap:20px}
@media (min-width:768px){
  .mag-grid{grid-template-columns:repeat(2,1fr)}
  .mag-grid .mag-lead{grid-column:span 2}
}
@media (min-width:992px){
  .mag-grid{grid-template-columns:repeat(3,1fr)}
  .mag-grid .mag-lead{grid-column:span 2;grid-row:span 2}
}
.con-card{padding:0;overflow:hidden;display:flex;flex-direction:column}
.con-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(31,75,63,.35)}
.con-cover{position:relative;overflow:hidden;background:var(--bg)}
.con-cover img{width:100%;aspect-ratio:16/10;object-fit:cover;object-position:center;transition:transform .4s var(--ease)}
.con-card:hover .con-cover img{transform:scale(1.03)}
.mag-lead .con-cover img{aspect-ratio:16/9}
@media (min-width:992px){.mag-lead .con-cover img{aspect-ratio:16/9}}
.lock-mask{position:absolute;inset:0;background:rgba(15,49,42,.12);display:flex;align-items:center;justify-content:center}
.lock-mask .lock{width:40px;height:40px;border-radius:50%;background:rgba(255,255,255,.92);display:flex;align-items:center;justify-content:center;
  color:var(--brand-900);font-size:18px;box-shadow:var(--shadow-1)}
.con-tag{position:absolute;left:14px;top:14px;z-index:2}
.con-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1;gap:10px}
.con-title{font-size:17px;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.con-desc{font-size:14px;color:var(--ink-600);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.con-body .btn-link-arrow{margin-top:auto}

/* 资讯列表 */
.news-grid{display:grid;grid-template-columns:1fr;gap:24px}
@media (min-width:576px){.news-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:992px){.news-grid{grid-template-columns:repeat(3,1fr)}}
.news-card{padding:0;overflow:hidden;display:flex;flex-direction:column}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(31,75,63,.35)}
.news-cover{display:block;overflow:hidden;background:var(--bg)}
.news-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;object-position:center;transition:transform .4s var(--ease)}
.news-card:hover .news-cover img{transform:scale(1.03)}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-title{font-size:18px;line-height:1.45}
.news-title a{color:var(--ink-900)}
.news-title a:hover{color:var(--brand-700);text-decoration:none}
.news-title span.clamp{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-sum{font-size:14px;color:var(--ink-600);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;font-size:14px;color:var(--ink-400)}
.empty-state{border:1px dashed var(--line);border-radius:var(--radius-md);padding:56px 24px;text-align:center;color:var(--ink-400)}
.empty-state .es-icon{font-size:40px;color:var(--ink-400);line-height:1}
.empty-state p{font-size:15px;margin:12px 0 8px;color:var(--ink-600)}

/* FAQ */
.faq .accordion-item{border:0;border-bottom:1px solid var(--line);background:transparent;border-radius:0}
.faq .accordion-button{background:transparent;padding:22px 40px 22px 0;font-size:17px;font-weight:600;color:var(--ink-900);box-shadow:none;border-radius:0}
.faq .accordion-button:not(.collapsed){color:var(--brand-700);background:transparent;box-shadow:none}
.faq .accordion-button:focus{box-shadow:none;border-color:transparent}
.faq .accordion-button::after{content:"+";background-image:none;font-size:22px;font-weight:400;color:var(--brand-700);
  width:auto;height:auto;display:flex;align-items:center;justify-content:center;transition:transform .18s var(--ease);transform:none}
.faq .accordion-button:not(.collapsed)::after{content:"−";transform:rotate(180deg)}
.faq .accordion-body{padding:0 0 24px;font-size:15px;line-height:1.8;color:var(--ink-600);max-width:760px}

/* CTA */
.cta-band{background:var(--brand-900);color:#fff;position:relative;overflow:hidden}
.cta-band::before{content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:48px 48px;opacity:.4}
.cta-inner{position:relative;padding:64px 0;text-align:left}
@media (min-width:992px){.cta-inner{padding:88px 0}}
.cta-band h2{color:#fff;font-size:clamp(1.5rem,2.6vw,2.1rem);line-height:1.25}
.cta-band .cta-sub{color:rgba(255,255,255,.78);margin-top:14px;max-width:36em;font-size:16px}
.cta-band .cta-actions{margin-top:28px;display:flex;flex-wrap:wrap;gap:12px}
.cta-note{position:relative;margin-top:16px;font-size:12px;color:rgba(255,255,255,.6)}

/* 页脚 */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.78);padding:64px 0 28px}
.foot-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media (min-width:576px){.foot-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:992px){.foot-grid{grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:32px}}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.foot-brand .brand-mark{background:#fff}
.foot-brand .brand-mark::after{background:var(--brand-900)}
.foot-name{font-size:18px;font-weight:700;color:#fff}
.foot-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.66);max-width:30em}
.foot-title{font-size:13px;font-weight:600;color:#fff;letter-spacing:.04em;padding-bottom:10px;margin-bottom:14px;
  border-bottom:1px solid rgba(255,255,255,.18);display:inline-block}
.foot-list{list-style:none;margin:0;padding:0}
.foot-list li{padding:5px 0}
.foot-list a{color:rgba(255,255,255,.78);font-size:14px}
.foot-list a:hover{color:var(--accent-100);text-decoration:none}
.foot-bottom{margin-top:48px;padding-top:20px;border-top:1px solid rgba(255,255,255,.18);
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.55)}

/* 入场动效 */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .55s var(--ease),transform .55s var(--ease)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;
    transition-duration:.001ms !important;scroll-behavior:auto !important}
  .reveal{opacity:1 !important;transform:none !important}
}

/* roulang page: article */
:root{
  --brand-900:#0F312A;
  --brand-700:#1F4B3F;
  --brand-500:#2F6B58;
  --accent-500:#C9632F;
  --accent-600:#B4571F;
  --accent-100:#F7E8DE;
  --ink-900:#161A18;
  --ink-600:#5B645F;
  --ink-400:#8C948F;
  --bg:#F7F5F0;
  --surface:#FFFFFF;
  --line:#E4DED3;
  --radius-xs:6px;
  --radius-sm:10px;
  --radius-md:16px;
  --radius-lg:24px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(22,26,24,.04), 0 10px 24px -14px rgba(22,26,24,.18);
  --shadow-2:0 2px 4px rgba(22,26,24,.05), 0 22px 48px -20px rgba(22,26,24,.26);
  --ease:cubic-bezier(.22,.61,.36,1);

  --bs-primary:#1F4B3F;
  --bs-body-bg:#F7F5F0;
  --bs-body-color:#161A18;
  --bs-border-color:#E4DED3;
  --bs-border-radius:10px;
  --bs-link-color:#1F4B3F;
  --bs-link-hover-color:#C9632F;
  --bs-font-sans-serif:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-900);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  text-align:left;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand-700);text-decoration:none;transition:color .2s var(--ease),border-color .2s var(--ease);}
a:hover{color:var(--accent-500);}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand-700);outline-offset:2px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px;}
@media (min-width:992px){.container{padding-left:28px;padding-right:28px;}}
@media (min-width:1400px){.container{max-width:1280px;}}

h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;color:var(--ink-900);}
p{margin:0;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(247,245,240,.94);
  border-bottom:1px solid transparent;
  transition:background .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(247,245,240,.88);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom-color:var(--line);
  box-shadow:var(--shadow-1);
}
.header-inner{display:flex;align-items:center;gap:24px;height:68px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:22px;height:22px;background:var(--brand-700);border-radius:5px;
  transform:rotate(45deg);position:relative;display:inline-block;flex:0 0 auto;
}
.brand-mark::after{
  content:"";position:absolute;left:50%;top:50%;width:11px;height:2px;
  background:#fff;border-radius:2px;transform:translate(-50%,-50%) rotate(-45deg);
}
.brand-name{font-size:19px;font-weight:700;color:var(--ink-900);letter-spacing:-.01em;}
.brand:hover .brand-name{color:var(--brand-700);}

.nav-chips{
  display:flex;align-items:center;gap:4px;
  background:var(--bg);border:1px solid var(--line);
  border-radius:var(--radius-pill);padding:4px;
  overflow-x:auto;scrollbar-width:none;max-width:100%;
}
.nav-chips::-webkit-scrollbar{display:none;}
.chip{
  flex:0 0 auto;padding:8px 18px;border-radius:var(--radius-pill);
  font-size:15px;color:var(--ink-600);white-space:nowrap;
  transition:color .22s var(--ease),background .22s var(--ease),box-shadow .22s var(--ease);
}
.chip:hover{color:var(--brand-700);}
.chip.active{background:var(--surface);color:var(--brand-700);font-weight:600;box-shadow:var(--shadow-1);}

.header-right{margin-left:auto;display:flex;align-items:center;gap:16px;flex:0 0 auto;}
.header-right .btn-accent{height:40px;padding:0 20px;font-size:14px;}
.menu-toggle{
  display:none;width:42px;height:42px;border-radius:var(--radius-sm);
  border:1px solid var(--line);background:var(--surface);color:var(--ink-900);
  align-items:center;justify-content:center;font-size:16px;
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.menu-toggle:hover{border-color:var(--brand-700);color:var(--brand-700);}

/* ---------- 按钮 ---------- */
.btn-accent,.btn-brand,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:0;border-radius:var(--radius-pill);cursor:pointer;
  font-size:15px;font-weight:600;line-height:1;text-align:center;
  transition:transform .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn-accent{height:48px;padding:0 28px;background:var(--accent-500);color:#fff;}
.btn-accent:hover{background:var(--accent-600);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-accent:active{transform:translateY(0);box-shadow:none;}
.btn-brand{height:48px;padding:0 28px;background:var(--brand-700);color:#fff;}
.btn-brand:hover{background:var(--brand-900);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-ghost{height:48px;padding:0 26px;background:transparent;border:1px solid var(--line);color:var(--ink-900);}
.btn-ghost:hover{border-color:var(--brand-700);color:var(--brand-700);}
.btn-link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;
  color:var(--brand-700);background:none;border:0;padding:0;cursor:pointer;
}
.btn-link-arrow i{transition:transform .2s var(--ease);}
.btn-link-arrow:hover{color:var(--accent-500);}
.btn-link-arrow:hover i{transform:translateX(4px);}

/* ---------- 徽章 ---------- */
.badge-cat{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  background:var(--accent-100);color:var(--accent-500);
  font-size:12px;font-weight:600;border-radius:var(--radius-pill);letter-spacing:.02em;
}
.badge-level{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  background:var(--brand-900);color:#fff;font-size:12px;font-weight:600;
  border-radius:var(--radius-pill);
}
.badge-state{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  background:rgba(47,107,88,.1);color:var(--brand-700);
  font-size:12px;font-weight:600;border-radius:var(--radius-pill);
}

/* ---------- 面包屑 ---------- */
.crumb-bar{padding:26px 0 0;}
.breadcrumb-nav{display:flex;align-items:center;flex-wrap:nowrap;gap:8px;font-size:14px;color:var(--ink-600);overflow:hidden;}
.breadcrumb-nav a{color:var(--ink-600);max-width:220px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.breadcrumb-nav a:hover{color:var(--brand-700);}
.breadcrumb-nav .sep{color:var(--ink-400);}
.breadcrumb-nav .current{color:var(--ink-900);font-weight:600;max-width:46vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ---------- 文章头部 ---------- */
.article-head{padding:28px 0 40px;border-bottom:1px solid var(--line);max-width:860px;}
.article-head h1{
  font-size:clamp(2rem,4.2vw,3.1rem);line-height:1.15;letter-spacing:-.02em;
  margin:18px 0 0;
}
.article-lead{margin-top:18px;font-size:16px;line-height:1.85;color:var(--ink-600);max-width:760px;}
.meta-row{
  margin-top:26px;display:flex;flex-wrap:wrap;align-items:center;gap:12px 22px;
  font-size:14px;color:var(--ink-400);
}
.meta-item{display:inline-flex;align-items:center;gap:7px;}
.meta-item i{color:var(--brand-500);font-size:13px;}
.share-group{margin-left:auto;display:inline-flex;align-items:center;gap:8px;}
.share-btn{
  width:34px;height:34px;border-radius:50%;border:1px solid var(--line);
  background:var(--surface);color:var(--ink-600);
  display:inline-flex;align-items:center;justify-content:center;font-size:13px;
  transition:border-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.share-btn:hover{border-color:var(--brand-700);color:var(--brand-700);transform:translateY(-1px);}

/* ---------- 正文布局 ---------- */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:56px;padding:48px 0 0;align-items:start;}
.article-main{max-width:760px;min-width:0;}
.toc-chips{display:none;}
.article-body{font-size:17px;line-height:1.9;color:var(--ink-900);}
.article-body p{margin:0 0 1.1em;}
.article-body h2{
  position:relative;padding-top:18px;margin:44px 0 16px;
  font-size:clamp(1.4rem,2.4vw,1.8rem);line-height:1.35;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:0;width:24px;height:3px;
  background:var(--brand-700);border-radius:2px;
}
.article-body h3{margin:28px 0 12px;font-size:20px;line-height:1.4;}
.article-body h4{margin:22px 0 10px;font-size:17px;line-height:1.5;}
.article-body ul,.article-body ol{margin:0 0 1.1em;padding-left:22px;}
.article-body li{margin-bottom:8px;}
.article-body li:last-child{margin-bottom:0;}
.article-body a{color:var(--brand-700);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--accent-500);}
.article-body blockquote{
  margin:24px 0;padding:20px 22px;background:var(--bg);
  border-left:3px solid var(--brand-700);border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  color:var(--ink-600);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:var(--radius-md);margin:24px 0 10px;width:100%;height:auto;}
.article-body figure{margin:24px 0;}
.article-body figcaption{text-align:center;font-size:13px;color:var(--ink-400);margin-top:10px;}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left;}
.article-body th{background:var(--bg);font-weight:600;}
.article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0;}
.article-body .table-responsive{overflow-x:auto;margin:24px 0;}

/* ---------- 侧栏 ---------- */
.article-side{position:sticky;top:92px;display:flex;flex-direction:column;gap:20px;}
.side-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-md);
  padding:22px;box-shadow:var(--shadow-1);
}
.side-title{font-size:13px;letter-spacing:.08em;color:var(--ink-400);font-weight:700;margin-bottom:14px;}
.toc{list-style:none;margin:0;padding:0;}
.toc li{margin-bottom:10px;}
.toc li:last-child{margin-bottom:0;}
.toc a{
  display:flex;align-items:center;gap:8px;font-size:14px;color:var(--ink-600);
  padding-left:10px;border-left:2px solid transparent;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.toc a:hover{color:var(--brand-700);border-left-color:var(--brand-700);}
.side-card.join-card{background:var(--brand-900);border-color:var(--brand-900);color:rgba(255,255,255,.78);}
.side-card.join-card .side-title{color:rgba(255,255,255,.6);}
.side-card.join-card h3{color:#fff;font-size:19px;margin-bottom:10px;}
.side-card.join-card p{font-size:14px;line-height:1.7;margin-bottom:18px;}
.side-card.join-card .btn-accent{width:100%;height:44px;font-size:14px;}
.side-note{margin-top:12px;font-size:12px;color:rgba(255,255,255,.55);text-align:center;}

/* ---------- 空态 ---------- */
.empty-state{
  border:1px dashed var(--line);border-radius:var(--radius-md);
  padding:56px 24px;text-align:center;background:var(--surface);
}
.empty-state i{font-size:40px;color:var(--ink-400);}
.empty-state p{margin:16px 0 10px;color:var(--ink-600);font-size:15px;}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;}
.section-head h2{font-size:clamp(1.5rem,2.6vw,2.1rem);line-height:1.25;}
.section-head p{margin-top:10px;font-size:15px;color:var(--ink-600);max-width:620px;}

/* ---------- 推荐卡片 ---------- */
.rec-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.ui-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-md);
  box-shadow:var(--shadow-1);overflow:hidden;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.ui-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(31,75,63,.35);}
.rec-thumb{display:block;aspect-ratio:16/9;overflow:hidden;background:var(--bg);}
.rec-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease);}
.ui-card:hover .rec-thumb img{transform:scale(1.03);}
.rec-body{padding:22px 24px 24px;}
.rec-body h3{font-size:18px;line-height:1.45;margin:12px 0 10px;}
.rec-body h3 a{color:var(--ink-900);}
.rec-body h3 a:hover{color:var(--brand-700);}
.rec-body p{font-size:14px;line-height:1.75;color:var(--ink-600);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.rec-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:18px;}
.rec-date{font-size:13px;color:var(--ink-400);}

/* ---------- 返回入口 ---------- */
.back-row{display:flex;justify-content:center;padding:56px 0 0;}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--brand-900);color:rgba(255,255,255,.82);
  padding:88px 0;margin-top:88px;position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:56px 56px;opacity:.5;pointer-events:none;
}
.cta-inner{position:relative;text-align:center;max-width:720px;margin:0 auto;}
.cta-inner h2{color:#fff;font-size:clamp(1.6rem,2.8vw,2.2rem);line-height:1.3;margin-bottom:16px;}
.cta-inner p{font-size:16px;line-height:1.8;margin-bottom:28px;}
.cta-note{margin:18px 0 0!important;font-size:12px!important;color:rgba(255,255,255,.6)!important;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.8);padding:72px 0 0;}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px;padding-bottom:48px;}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.foot-brand .brand-mark{background:var(--brand-500);}
.foot-name{color:#fff;font-weight:700;font-size:18px;}
.foot-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.72);max-width:320px;}
.foot-title{
  display:inline-block;font-size:13px;letter-spacing:.06em;color:#fff;
  padding-bottom:8px;margin-bottom:16px;border-bottom:1px solid rgba(255,255,255,.2);
}
.foot-list{list-style:none;margin:0;padding:0;}
.foot-list li{margin-bottom:10px;}
.foot-list a{color:rgba(255,255,255,.78);font-size:14px;}
.foot-list a:hover{color:var(--accent-100);}
.foot-bottom{
  border-top:1px solid rgba(255,255,255,.14);
  display:flex;align-items:center;justify-content:space-between;gap:12px 24px;flex-wrap:wrap;
  padding:22px 0 28px;font-size:13px;color:rgba(255,255,255,.62);
}

/* ---------- 抽屉 ---------- */
.drawer{background:var(--bg);border-left:1px solid var(--line);width:300px;}
.drawer .offcanvas-header{border-bottom:1px solid var(--line);padding:16px 20px;}
.drawer .offcanvas-body{padding:20px;}
.drawer-list{list-style:none;margin:0 0 24px;padding:0;}
.drawer-list li{margin-bottom:6px;}
.drawer-list a{
  display:block;padding:12px 14px;border-radius:var(--radius-sm);
  font-size:15px;color:var(--ink-900);
}
.drawer-list a:hover{background:var(--surface);color:var(--brand-700);}
.drawer .btn-accent{width:100%;}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .56s var(--ease),transform .56s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .article-layout{gap:40px;}
}
@media (max-width:991px){
  .header-inner{height:60px;gap:14px;}
  .menu-toggle{display:inline-flex;}
  .header-right .btn-accent{display:none;}
  .brand-name{font-size:17px;}
  .nav-chips{flex:1 1 auto;min-width:0;}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:0;padding-top:36px;}
  .article-side{display:none;}
  .toc-chips{
    display:flex;gap:8px;overflow-x:auto;scrollbar-width:none;
    padding:0 0 20px;margin-bottom:8px;border-bottom:1px solid var(--line);
  }
  .toc-chips::-webkit-scrollbar{display:none;}
  .toc-chips a{
    flex:0 0 auto;padding:7px 16px;border-radius:var(--radius-pill);
    background:var(--surface);border:1px solid var(--line);
    font-size:13px;color:var(--ink-600);
  }
  .toc-chips a:hover{border-color:var(--brand-700);color:var(--brand-700);}
  .rec-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .section{padding:64px 0;}
  .cta-band{padding:64px 0;margin-top:64px;}
  .foot-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:767px){
  .article-head{padding:20px 0 32px;}
  .article-body{font-size:16px;line-height:1.85;}
  .article-body table{display:block;overflow-x:auto;white-space:nowrap;font-size:14px;}
  .rec-grid{grid-template-columns:minmax(0,1fr);}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;}
  .meta-row .share-group{margin-left:0;}
  .cta-inner .btn-accent{width:100%;}
  .back-row .btn-ghost{width:100%;}
}
@media (max-width:575px){
  .section{padding:56px 0;}
  .foot-grid{grid-template-columns:minmax(0,1fr);gap:28px;}
  .foot-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .article-head h1{font-size:1.75rem;}
  .breadcrumb-nav .current{max-width:38vw;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important;}
  .reveal{opacity:1!important;transform:none!important;}
}

/* roulang page: category2 */
:root{
  --brand-900:#0F312A;
  --brand-700:#1F4B3F;
  --brand-500:#2F6B58;
  --accent-500:#C9632F;
  --accent-100:#F7E8DE;
  --ink-900:#161A18;
  --ink-600:#5B645F;
  --ink-400:#8C948F;
  --bg:#F7F5F0;
  --surface:#FFFFFF;
  --line:#E4DED3;
  --radius-xs:6px;
  --radius-sm:10px;
  --radius-md:16px;
  --radius-lg:24px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(22,26,24,.04),0 10px 24px -14px rgba(22,26,24,.18);
  --shadow-2:0 2px 4px rgba(22,26,24,.05),0 22px 48px -20px rgba(22,26,24,.26);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --bs-primary:#1F4B3F;
  --bs-body-bg:#F7F5F0;
  --bs-body-color:#161A18;
  --bs-border-color:#E4DED3;
  --bs-border-radius:16px;
  --bs-font-sans-serif:var(--font);
  --bs-link-color:#1F4B3F;
  --bs-link-hover-color:#C9632F;
  --bs-accordion-btn-focus-box-shadow:none;
  --bs-accordion-border-color:#E4DED3;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-900);
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand-700);text-decoration:none;transition:color .18s var(--ease)}
a:hover{color:var(--accent-500);text-decoration:underline;text-underline-offset:3px}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.02em;color:var(--ink-900);text-align:left}
p{margin:0 0 1.1em}
ul{margin:0;padding:0;list-style:none}
button,input{font-family:inherit;font-size:inherit}
:focus-visible{outline:2px solid var(--brand-700);outline-offset:2px}

.container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
@media (min-width:768px){.container{padding-left:28px;padding-right:28px}}
@media (min-width:1400px){.container{max-width:1280px}}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(247,245,240,.92);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(247,245,240,.88);
  border-bottom-color:var(--line);
  box-shadow:var(--shadow-1);
}
.nav-inner{display:flex;align-items:center;gap:16px;height:60px}
@media (min-width:992px){.nav-inner{height:68px}}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink-900);text-decoration:none;flex:0 0 auto}
.brand:hover{color:var(--ink-900);text-decoration:none}
.brand-mark{
  width:22px;height:22px;border-radius:5px;background:var(--brand-700);
  transform:rotate(45deg);position:relative;flex:0 0 auto;
}
.brand-mark::after{
  content:"";position:absolute;left:5px;top:10px;width:12px;height:2px;
  background:#fff;transform:rotate(-45deg);border-radius:2px;
}
.brand-name{font-size:17px;font-weight:700;letter-spacing:-.01em;white-space:nowrap}
@media (min-width:992px){.brand-name{font-size:19px}}

.nav-chips{
  display:none;align-items:center;gap:4px;margin:0 auto;
  background:var(--bg);border:1px solid var(--line);
  border-radius:var(--radius-pill);padding:4px;
}
@media (min-width:992px){.nav-chips{display:flex}}
.chip{
  display:inline-block;padding:8px 18px;border-radius:var(--radius-pill);
  font-size:14px;color:var(--ink-600);white-space:nowrap;
  transition:background .22s var(--ease),color .22s var(--ease),box-shadow .22s var(--ease);
}
.chip:hover{color:var(--brand-700);text-decoration:none}
.chip.active{background:var(--surface);color:var(--brand-700);font-weight:600;box-shadow:var(--shadow-1)}

.nav-actions{display:flex;align-items:center;gap:14px;margin-left:auto}
.nav-divider{display:none;width:1px;height:24px;background:var(--line)}
@media (min-width:992px){.nav-divider{display:block}}
.nav-actions .btn-accent{display:none}
@media (min-width:992px){.nav-actions .btn-accent{display:inline-flex}}
.nav-toggle{
  display:inline-flex;flex-direction:column;justify-content:center;gap:5px;
  width:42px;height:42px;padding:0 10px;border:1px solid var(--line);
  background:var(--surface);border-radius:var(--radius-sm);cursor:pointer;
  transition:border-color .18s var(--ease);
}
.nav-toggle span{display:block;height:2px;background:var(--brand-700);border-radius:2px}
.nav-toggle:hover{border-color:var(--brand-700)}
@media (min-width:992px){.nav-toggle{display:none}}

.drawer{background:var(--bg);width:300px;border-left:1px solid var(--line)}
.drawer .offcanvas-header{border-bottom:1px solid var(--line);padding:16px 20px}
.drawer-title{font-size:15px;font-weight:700;color:var(--ink-900)}
.drawer .offcanvas-body{padding:20px}
.drawer-list{display:flex;flex-direction:column}
.drawer-list a{
  display:block;padding:14px 4px;font-size:15px;color:var(--ink-600);
  border-bottom:1px solid var(--line);
}
.drawer-list a:hover{color:var(--brand-700);text-decoration:none}
.drawer-list a.active{color:var(--brand-700);font-weight:700}
.drawer-cta{display:flex;justify-content:center;margin-top:24px;width:100%}

/* ---------- 按钮 ---------- */
.btn-accent,.btn-brand,.btn-ghost,.btn-ghost-light{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--radius-pill);
  font-size:15px;font-weight:600;border:1px solid transparent;
  cursor:pointer;text-decoration:none;white-space:nowrap;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-accent{background:var(--accent-500);color:#fff}
.btn-accent:hover{background:#B85626;color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);text-decoration:none}
.btn-accent:active{transform:translateY(0)}
.btn-brand{background:var(--brand-700);color:#fff}
.btn-brand:hover{background:var(--brand-900);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);text-decoration:none}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink-900)}
.btn-ghost:hover{border-color:var(--brand-700);color:var(--brand-700);text-decoration:none}
.btn-ghost-light{background:transparent;border-color:rgba(255,255,255,.4);color:#fff}
.btn-ghost-light:hover{border-color:#fff;color:#fff;background:rgba(255,255,255,.08);text-decoration:none}
.btn-link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;
  color:var(--brand-700);text-decoration:none;
}
.btn-link-arrow span{transition:transform .2s var(--ease)}
.btn-link-arrow:hover{color:var(--accent-500);text-decoration:none}
.btn-link-arrow:hover span{transform:translateX(4px)}

/* ---------- 徽章 ---------- */
.badge-tag{
  display:inline-block;padding:4px 10px;border-radius:var(--radius-pill);
  background:var(--accent-100);color:var(--accent-500);font-size:12px;font-weight:600;line-height:1.6;
}
.badge-date{
  display:inline-block;padding:4px 10px;border-radius:var(--radius-pill);
  background:rgba(47,107,88,.1);color:var(--brand-700);font-size:12px;font-weight:600;line-height:1.6;
  font-variant-numeric:tabular-nums;
}

/* ---------- 分类头部 ---------- */
.cat-hero{position:relative;overflow:hidden;background:var(--brand-900)}
.cat-hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
}
.cat-hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(15,49,42,.9) 0%,rgba(15,49,42,.72) 46%,rgba(15,49,42,.42) 100%);
}
.cat-hero-inner{position:relative;z-index:2;padding-top:36px;padding-bottom:34px;min-height:240px}
@media (min-width:992px){.cat-hero-inner{padding-top:48px;padding-bottom:46px;min-height:292px}}
.crumb{display:flex;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.72);margin-bottom:18px;flex-wrap:wrap}
.crumb a{color:rgba(255,255,255,.72)}
.crumb a:hover{color:#fff}
.crumb .cur{color:#fff}
.cat-title{
  color:#fff;font-size:clamp(1.75rem,3.4vw,2.6rem);line-height:1.2;letter-spacing:-.02em;
  max-width:16em;
}
.cat-sub{margin:16px 0 0;color:rgba(255,255,255,.82);font-size:15px;line-height:1.75;max-width:36em}
.hero-chips{display:flex;gap:8px;margin-top:24px;overflow-x:auto;padding-bottom:4px;scrollbar-width:none}
.hero-chips::-webkit-scrollbar{display:none}
.hero-chip{
  flex:0 0 auto;padding:8px 16px;border-radius:var(--radius-pill);
  border:1px solid rgba(255,255,255,.3);color:rgba(255,255,255,.86);
  font-size:13px;white-space:nowrap;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.hero-chip:hover{background:rgba(255,255,255,.14);color:#fff;text-decoration:none;border-color:rgba(255,255,255,.6)}
.hero-chip.active{background:#fff;color:var(--brand-700);border-color:#fff;font-weight:600}

/* ---------- 板块 ---------- */
.section{padding:56px 0}
@media (min-width:992px){.section{padding:88px 0}}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:32px}
.sec-eyebrow{
  display:inline-block;font-size:12px;letter-spacing:.08em;color:var(--brand-500);
  text-transform:uppercase;font-weight:700;margin-bottom:8px;
}
.sec-title{font-size:clamp(1.5rem,2.6vw,2.1rem);line-height:1.25}
.sec-desc{margin:12px 0 0;color:var(--ink-600);font-size:15px;max-width:40em}

/* ---------- 概览条 ---------- */
.stat-strip{
  background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.stat-grid{display:grid;grid-template-columns:1fr;gap:0}
@media (min-width:576px){.stat-grid{grid-template-columns:1fr 1fr}}
@media (min-width:992px){.stat-grid{grid-template-columns:repeat(4,1fr)}}
.stat-cell{padding:24px 4px;border-bottom:1px solid var(--line)}
@media (min-width:576px){
  .stat-cell{padding:26px 20px;border-right:1px solid var(--line)}
  .stat-cell:nth-child(2n){border-right:none}
}
@media (min-width:992px){
  .stat-cell{padding:30px 24px;border-bottom:none;border-right:1px solid var(--line)}
  .stat-cell:nth-child(2n){border-right:1px solid var(--line)}
  .stat-cell:last-child{border-right:none}
}
.stat-num{font-size:26px;font-weight:700;color:var(--brand-700);line-height:1.2;letter-spacing:-.01em}
@media (min-width:992px){.stat-num{font-size:30px}}
.stat-label{margin-top:6px;font-size:13px;color:var(--ink-400);letter-spacing:.01em}

/* ---------- 筛选工具条 ---------- */
.toolbar{
  display:flex;align-items:center;gap:14px;flex-wrap:wrap;justify-content:space-between;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-md);
  padding:14px 18px;box-shadow:var(--shadow-1);margin-bottom:32px;
}
.toolbar-note{font-size:13px;color:var(--ink-400)}
.search-form{display:flex;gap:10px;flex:1 1 260px;max-width:420px;margin-left:auto}
.search-form input{
  height:48px;flex:1;min-width:0;padding:0 16px;border:1px solid var(--line);
  background:var(--bg);border-radius:var(--radius-sm);color:var(--ink-900);
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.search-form input::placeholder{color:var(--ink-400)}
.search-form input:focus{outline:none;border-color:var(--brand-700);box-shadow:0 0 0 3px rgba(31,75,63,.1)}
.search-form .btn-brand{height:48px;padding:0 22px}

/* ---------- 时间线 ---------- */
.timeline{position:relative;margin:0;padding-left:32px}
.timeline::before{
  content:"";position:absolute;left:8px;top:8px;bottom:8px;width:1px;background:var(--line);
}
.tl-item{position:relative;padding-bottom:28px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:-31px;top:20px;
  width:15px;height:15px;border-radius:50%;
  background:var(--bg);border:2px solid var(--accent-500);
}
.tl-card{
  display:flex;gap:20px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-md);padding:20px;box-shadow:var(--shadow-1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.tl-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(31,75,63,.35)}
.tl-thumb{
  flex:0 0 180px;max-width:180px;border-radius:var(--radius-sm);overflow:hidden;
  background:var(--bg);align-self:flex-start;
}
.tl-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;object-position:center}
.tl-body{min-width:0;flex:1}
.tl-meta{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:10px}
.tl-title{font-size:19px;line-height:1.4;letter-spacing:-.01em;margin-bottom:8px}
.tl-title a{color:var(--ink-900)}
.tl-title a:hover{color:var(--brand-700);text-decoration:none}
.tl-desc{color:var(--ink-600);font-size:15px;margin:0 0 12px;max-width:38em}
@media (max-width:575.98px){
  .timeline{padding-left:24px}
  .timeline::before{left:5px}
  .tl-item::before{left:-25px;width:13px;height:13px;top:18px}
  .tl-card{flex-direction:column;gap:14px;padding:16px}
  .tl-thumb{flex:none;max-width:100%;width:100%}
  .tl-thumb img{aspect-ratio:16/9}
}

/* ---------- 标签矩阵 ---------- */
.tag-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
@media (min-width:576px){.tag-grid{grid-template-columns:repeat(3,1fr)}}
@media (min-width:992px){.tag-grid{grid-template-columns:repeat(6,1fr)}}
.tag-pill{
  display:flex;align-items:center;justify-content:space-between;gap:8px;
  padding:14px 16px;border-radius:var(--radius-pill);background:var(--bg);
  border:1px solid var(--line);color:var(--ink-900);font-size:14px;
  transition:background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.tag-pill span{font-size:12px;color:var(--ink-400);font-variant-numeric:tabular-nums}
.tag-pill:hover{background:var(--accent-100);border-color:var(--accent-100);color:var(--accent-500);text-decoration:none}
.tag-pill:hover span{color:var(--accent-500)}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:820px}
.faq .accordion-item{background:transparent;border:none;border-bottom:1px solid var(--line)}
.faq .accordion-item:first-of-type{border-top:1px solid var(--line)}
.faq .accordion-button{
  background:transparent;padding:22px 44px 22px 0;font-size:17px;font-weight:600;
  color:var(--ink-900);box-shadow:none;border-radius:0;
  transition:color .18s var(--ease);
}
.faq .accordion-button:not(.collapsed){color:var(--brand-700);background:transparent;box-shadow:none}
.faq .accordion-button:focus{box-shadow:none;border-color:transparent}
.faq .accordion-button::after{
  background-image:none;content:"+";font-size:22px;font-weight:400;color:var(--brand-500);
  width:auto;height:auto;transform:none;line-height:1;margin-left:auto;transition:transform .18s var(--ease),color .18s var(--ease);
}
.faq .accordion-button:not(.collapsed)::after{content:"−";transform:rotate(180deg);color:var(--accent-500)}
.faq .accordion-body{padding:0 0 22px;color:var(--ink-600);font-size:15px;line-height:1.8;max-width:760px}

/* ---------- CTA ---------- */
.cta-band{background:var(--brand-900);position:relative;overflow:hidden}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px),
                   linear-gradient(0deg,rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:88px 88px;opacity:.5;
}
.cta-inner{position:relative;z-index:2;padding:64px 20px;text-align:left}
@media (min-width:992px){.cta-inner{padding:88px 28px}}
.cta-title{color:#fff;font-size:clamp(1.5rem,2.6vw,2.1rem);line-height:1.25;max-width:20em}
.cta-text{color:rgba(255,255,255,.78);font-size:15px;margin:16px 0 0;max-width:38em}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:28px}
.cta-note{margin:18px 0 0;font-size:12px;color:rgba(255,255,255,.56);letter-spacing:.01em}
@media (max-width:575.98px){.cta-actions .btn-accent,.cta-actions .btn-ghost-light{width:100%}}

/* ---------- 相关分类 ---------- */
.related-chips{display:grid;grid-template-columns:1fr;gap:14px}
@media (min-width:768px){.related-chips{grid-template-columns:1fr 1fr}}
.chip-lg{
  display:flex;flex-direction:column;gap:6px;padding:22px 24px;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--radius-md);color:var(--ink-900);
  box-shadow:var(--shadow-1);
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.chip-lg strong{font-size:17px;font-weight:700}
.chip-lg em{font-style:normal;font-size:14px;color:var(--ink-600)}
.chip-lg:hover{transform:translateY(-4px);border-color:rgba(31,75,63,.35);box-shadow:var(--shadow-2);color:var(--ink-900);text-decoration:none}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.82);padding:64px 0 0}
.foot-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media (min-width:576px){.foot-grid{grid-template-columns:1fr 1fr}}
@media (min-width:992px){.foot-grid{grid-template-columns:1.4fr 1fr 1fr 1fr}}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.foot-brand .brand-mark{background:var(--accent-500);width:20px;height:20px}
.foot-brand .brand-mark::after{left:4px;top:9px;width:12px}
.foot-name{font-size:18px;font-weight:700;color:#fff;letter-spacing:-.01em}
.foot-desc{margin:0;font-size:14px;line-height:1.75;color:rgba(255,255,255,.66);max-width:30em}
.foot-title{
  font-size:13px;font-weight:700;color:#fff;margin-bottom:16px;letter-spacing:.06em;
  padding-bottom:8px;position:relative;
}
.foot-title::after{content:"";position:absolute;left:0;bottom:0;width:24px;height:2px;background:var(--accent-500)}
.foot-list{display:flex;flex-direction:column;gap:10px}
.foot-list a{color:rgba(255,255,255,.78);font-size:14px}
.foot-list a:hover{color:var(--accent-100);text-decoration:none}
.foot-bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.14);padding:22px 0 28px;
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.56);
}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .55s var(--ease),transform .55s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
.reveal.d1{transition-delay:.06s}
.reveal.d2{transition-delay:.12s}
.reveal.d3{transition-delay:.18s}

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

/* roulang page: category1 */
:root{
  --brand-900:#0F312A;
  --brand-700:#1F4B3F;
  --brand-500:#2F6B58;
  --accent-500:#C9632F;
  --accent-100:#F7E8DE;
  --ink-900:#161A18;
  --ink-600:#5B645F;
  --ink-400:#8C948F;
  --bg:#F7F5F0;
  --surface:#FFFFFF;
  --line:#E4DED3;
  --radius-xs:6px;
  --radius-sm:10px;
  --radius-md:16px;
  --radius-lg:24px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(22,26,24,.04),0 10px 24px -14px rgba(22,26,24,.18);
  --shadow-2:0 2px 4px rgba(22,26,24,.05),0 22px 48px -20px rgba(22,26,24,.26);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;

  --bs-font-sans-serif:var(--font);
  --bs-body-font-family:var(--font);
  --bs-body-bg:#F7F5F0;
  --bs-body-color:#161A18;
  --bs-border-color:#E4DED3;
  --bs-border-radius:16px;
  --bs-link-color:#1F4B3F;
  --bs-link-hover-color:#C9632F;
  --bs-primary:#1F4B3F;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--ink-900);
  background:var(--bg);
  text-align:left;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand-700);text-decoration:none;transition:color .18s var(--ease)}
a:hover{color:var(--accent-500)}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-0.01em;color:var(--ink-900)}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
::selection{background:var(--accent-100);color:var(--brand-900)}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:28px;
  padding-right:28px;
}
@media (min-width:1400px){
  .container{max-width:1280px}
}
@media (max-width:575.98px){
  .container{padding-left:20px;padding-right:20px}
}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  border-bottom:1px solid transparent;
  transition:background .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(247,245,240,.88);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom-color:var(--line);
  box-shadow:var(--shadow-1);
}
.nav-wrap{
  display:flex;
  align-items:center;
  gap:24px;
  height:68px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  color:var(--ink-900);
  text-decoration:none;
}
.brand:hover{color:var(--ink-900)}
.brand-mark{
  position:relative;
  width:22px;
  height:22px;
  border-radius:5px;
  background:var(--brand-700);
  transform:rotate(45deg);
  flex:0 0 auto;
}
.brand-mark::after{
  content:"";
  position:absolute;
  left:50%;
  top:50%;
  width:12px;
  height:2px;
  background:var(--bg);
  transform:translate(-50%,-50%) rotate(-45deg);
  border-radius:2px;
}
.brand-name{
  font-size:19px;
  font-weight:700;
  letter-spacing:-0.01em;
  white-space:nowrap;
}
.nav-chips{
  display:flex;
  align-items:center;
  gap:4px;
  margin:0 auto;
  padding:5px;
  border-radius:var(--radius-pill);
  background:rgba(228,222,211,.62);
}
.chip{
  display:inline-block;
  padding:8px 18px;
  border-radius:var(--radius-pill);
  font-size:15px;
  line-height:1.2;
  color:var(--ink-600);
  white-space:nowrap;
  transition:color .22s var(--ease),background .22s var(--ease),box-shadow .22s var(--ease);
}
.chip:hover{color:var(--brand-700)}
.chip.active{
  background:#fff;
  color:var(--brand-700);
  font-weight:600;
  box-shadow:var(--shadow-1);
}
.nav-actions{
  display:flex;
  align-items:center;
  gap:16px;
  flex:0 0 auto;
}
.nav-divider{
  width:1px;
  height:24px;
  background:var(--line);
}
.nav-toggle{
  display:none;
  width:42px;
  height:42px;
  align-items:center;
  justify-content:center;
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  background:var(--surface);
  color:var(--brand-700);
  font-size:17px;
  cursor:pointer;
  transition:border-color .18s var(--ease),color .18s var(--ease);
}
.nav-toggle:hover{border-color:var(--brand-700)}

.btn-accent,
.btn-brand,
.btn-ghost{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 28px;
  border-radius:var(--radius-pill);
  font-size:15px;
  font-weight:600;
  line-height:1;
  border:1px solid transparent;
  cursor:pointer;
  text-decoration:none;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-accent{background:var(--accent-500);border-color:var(--accent-500);color:#fff}
.btn-accent:hover{background:#b4541f;border-color:#b4541f;color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-accent:active{transform:translateY(0);box-shadow:var(--shadow-1)}
.btn-brand{background:var(--brand-700);border-color:var(--brand-700);color:#fff}
.btn-brand:hover{background:var(--brand-900);border-color:var(--brand-900);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink-900)}
.btn-ghost:hover{border-color:var(--brand-700);color:var(--brand-700);transform:translateY(-1px)}
.btn-ghost.on-dark{border-color:rgba(255,255,255,.42);color:#fff}
.btn-ghost.on-dark:hover{border-color:#fff;color:#fff;background:rgba(255,255,255,.08)}
.btn-accent:focus-visible,
.btn-brand:focus-visible,
.btn-ghost:focus-visible,
.chip:focus-visible,
.nav-toggle:focus-visible,
.btn-link-arrow:focus-visible,
a:focus-visible{
  outline:2px solid var(--brand-700);
  outline-offset:2px;
}
.nav-cta{height:42px;padding:0 20px;font-size:14px}

.btn-link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--brand-700);
  text-decoration:none;
}
.btn-link-arrow i{transition:transform .2s var(--ease)}
.btn-link-arrow:hover{color:var(--accent-500)}
.btn-link-arrow:hover i{transform:translateX(4px)}

/* ---------- 抽屉 ---------- */
.drawer{width:300px;background:var(--bg);border-left:1px solid var(--line)}
.drawer .offcanvas-header{
  padding:18px 22px;
  border-bottom:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
}
.drawer .offcanvas-body{padding:20px 22px}
.drawer-close{
  width:36px;height:36px;
  border:1px solid var(--line);
  border-radius:var(--radius-xs);
  background:var(--surface);
  color:var(--ink-600);
  cursor:pointer;
}
.drawer-list li + li{border-top:1px solid var(--line)}
.drawer-list a{
  display:block;
  padding:14px 2px;
  font-size:16px;
  color:var(--ink-900);
}
.drawer-list a.active{color:var(--brand-700);font-weight:600}
.drawer-cta{width:100%;margin-top:24px}

/* ---------- 分类头图 ---------- */
.cat-hero{
  position:relative;
  overflow:hidden;
  background:var(--brand-900);
  min-height:360px;
  display:flex;
  align-items:center;
  padding:56px 0;
}
.cat-hero-bg{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:cover;
  object-position:center;
}
.cat-hero-veil{
  position:absolute;
  inset:0;
  background:linear-gradient(90deg,rgba(15,49,42,.82) 0%,rgba(15,49,42,.62) 58%,rgba(15,49,42,.46) 100%);
}
.cat-hero-inner{position:relative;z-index:2;max-width:720px}
.badge-soft{
  display:inline-block;
  padding:4px 10px;
  border-radius:var(--radius-pill);
  background:var(--accent-100);
  color:var(--accent-500);
  font-size:12px;
  letter-spacing:.04em;
  font-weight:600;
}
.cat-hero h1{
  margin-top:18px;
  color:#fff;
  font-size:clamp(2rem,4.2vw,3.1rem);
  line-height:1.15;
  letter-spacing:-0.02em;
}
.cat-hero-sub{
  margin-top:16px;
  max-width:34em;
  font-size:16px;
  line-height:1.75;
  color:rgba(255,255,255,.82);
}
.cat-hero-actions{
  display:flex;
  gap:14px;
  margin-top:32px;
  flex-wrap:wrap;
}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0}
.section.tight{padding:72px 0}
.sec-head{max-width:760px;margin-bottom:44px}
.sec-head h2{
  font-size:clamp(1.5rem,2.6vw,2.1rem);
  line-height:1.25;
}
.sec-head p{
  margin-top:16px;
  color:var(--ink-600);
  font-size:16px;
  line-height:1.75;
}
.sec-head-row{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  flex-wrap:wrap;
}

/* ---------- 数据条 ---------- */
.stat-strip{
  background:var(--surface);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.stat-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
}
.stat{
  padding:32px 24px;
  text-align:left;
}
.stat + .stat{border-left:1px solid var(--line)}
.stat-num{
  font-size:34px;
  font-weight:700;
  line-height:1.1;
  color:var(--brand-700);
  letter-spacing:-0.02em;
}
.stat-num .unit{font-size:16px;font-weight:600;margin-left:2px;color:var(--brand-500)}
.stat-label{
  margin-top:8px;
  font-size:13px;
  color:var(--ink-600);
  letter-spacing:.01em;
}

/* ---------- 图文交替 ---------- */
.zig-row{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:56px;
  align-items:center;
  padding:44px 0;
}
.zig-row + .zig-row{border-top:1px solid var(--line)}
.zig-row.flip .zig-media{order:2}
.zig-media{position:relative}
.zig-media img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:var(--radius-md);
  box-shadow:var(--shadow-1);
}
.zig-tag{
  position:absolute;
  left:18px;
  bottom:18px;
  padding:6px 12px;
  border-radius:var(--radius-pill);
  background:rgba(15,49,42,.86);
  color:#fff;
  font-size:12px;
  letter-spacing:.04em;
}
.eyebrow{
  display:inline-block;
  font-size:12px;
  font-weight:600;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:var(--brand-500);
}
.zig-body h3{
  margin-top:14px;
  font-size:22px;
  line-height:1.35;
}
.zig-body p{
  margin-top:14px;
  color:var(--ink-600);
  font-size:16px;
  line-height:1.75;
}
.zig-body .btn-link-arrow{margin-top:20px}

/* ---------- 场景卡片 ---------- */
.scene-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.scene-card{
  position:relative;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  padding:28px;
  box-shadow:var(--shadow-1);
  overflow:hidden;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.scene-card::before{
  content:"";
  position:absolute;
  left:0;top:0;right:0;
  height:3px;
  background:var(--accent-500);
  opacity:0;
  transition:opacity .2s var(--ease);
}
.scene-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-2);
  border-color:rgba(31,75,63,.35);
}
.scene-card:hover::before{opacity:1}
.scene-tag{
  display:inline-block;
  padding:4px 10px;
  border-radius:var(--radius-pill);
  background:var(--accent-100);
  color:var(--accent-500);
  font-size:12px;
  font-weight:600;
}
.scene-card h3{margin-top:16px;font-size:20px;line-height:1.35}
.scene-card p{margin-top:12px;color:var(--ink-600);font-size:15px;line-height:1.75}
.scene-list{margin-top:18px;padding-top:18px;border-top:1px dashed var(--line)}
.scene-list li{
  display:flex;
  gap:10px;
  align-items:flex-start;
  font-size:14px;
  color:var(--ink-600);
  line-height:1.7;
}
.scene-list li + li{margin-top:8px}
.scene-list i{color:var(--brand-500);font-size:13px;margin-top:5px}

/* ---------- 流程 ---------- */
.steps{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
}
.step{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  padding:26px 24px;
  box-shadow:var(--shadow-1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(31,75,63,.35)}
.step-no{
  font-size:30px;
  font-weight:700;
  line-height:1;
  color:var(--line);
  letter-spacing:-0.02em;
}
.step h3{margin-top:16px;font-size:17px;line-height:1.4}
.step p{margin-top:10px;font-size:14px;line-height:1.7;color:var(--ink-600)}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px}
.faq .accordion-item{
  background:transparent;
  border:0;
  border-top:1px solid var(--line);
}
.faq .accordion-item:last-child{border-bottom:1px solid var(--line)}
.faq .accordion-button{
  background:transparent;
  box-shadow:none;
  border-radius:0;
  padding:22px 0;
  font-size:17px;
  font-weight:600;
  color:var(--ink-900);
  line-height:1.5;
}
.faq .accordion-button:not(.collapsed){
  color:var(--brand-700);
  background:transparent;
  box-shadow:none;
}
.faq .accordion-button:focus{
  box-shadow:none;
  outline:2px solid var(--brand-700);
  outline-offset:-2px;
}
.faq .accordion-button::after{
  content:"+";
  background-image:none;
  width:auto;
  height:auto;
  font-size:22px;
  font-weight:400;
  line-height:1;
  color:var(--brand-500);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  transition:transform .18s var(--ease);
}
.faq .accordion-button:not(.collapsed)::after{
  content:"−";
  transform:rotate(180deg);
}
.faq .accordion-body{
  padding:0 0 24px;
  max-width:760px;
  font-size:15px;
  line-height:1.8;
  color:var(--ink-600);
}

/* ---------- 深色 CTA ---------- */
.cta-band{
  position:relative;
  overflow:hidden;
  background:var(--brand-900);
  padding:88px 0;
  color:#fff;
}
.cta-band::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:repeating-linear-gradient(115deg,rgba(255,255,255,.05) 0 1px,transparent 1px 88px);
  opacity:.5;
  pointer-events:none;
}
.cta-inner{
  position:relative;
  z-index:2;
  max-width:760px;
}
.cta-band h2{
  color:#fff;
  font-size:clamp(1.5rem,2.6vw,2.1rem);
  line-height:1.25;
}
.cta-band p{
  margin-top:16px;
  color:rgba(255,255,255,.78);
  font-size:16px;
  line-height:1.75;
}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:32px}
.cta-note{
  margin-top:20px;
  font-size:12px;
  letter-spacing:.01em;
  color:rgba(255,255,255,.6);
}
.cat-chips{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:40px;
  padding-top:32px;
  border-top:1px solid rgba(255,255,255,.16);
}
.cat-chips .label{
  align-self:center;
  font-size:13px;
  color:rgba(255,255,255,.6);
  margin-right:6px;
}
.cat-chip{
  display:inline-block;
  padding:8px 16px;
  border-radius:var(--radius-pill);
  border:1px solid rgba(255,255,255,.24);
  color:#fff;
  font-size:14px;
  transition:background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.cat-chip:hover{background:var(--accent-100);border-color:var(--accent-100);color:var(--brand-900)}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--brand-900);
  color:rgba(255,255,255,.78);
  padding:72px 0 28px;
}
.foot-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.1fr;
  gap:32px;
}
.foot-brand{display:flex;align-items:center;gap:10px}
.foot-brand .brand-mark{background:#fff;width:20px;height:20px}
.foot-brand .brand-mark::after{background:var(--brand-900)}
.foot-name{font-size:18px;font-weight:700;color:#fff;letter-spacing:-0.01em}
.foot-desc{
  margin-top:16px;
  font-size:14px;
  line-height:1.75;
  color:rgba(255,255,255,.66);
  max-width:32em;
}
.foot-title{
  display:inline-block;
  padding-bottom:8px;
  border-bottom:1px solid rgba(201,99,47,.7);
  font-size:13px;
  letter-spacing:.06em;
  color:#fff;
}
.foot-list{margin-top:18px}
.foot-list li + li{margin-top:10px}
.foot-list a,.foot-list span{font-size:14px;color:rgba(255,255,255,.72)}
.foot-list a:hover{color:var(--accent-100)}
.foot-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  margin-top:56px;
  padding-top:24px;
  border-top:1px solid rgba(255,255,255,.14);
  font-size:13px;
  color:rgba(255,255,255,.55);
}

/* ---------- 入场动效 ---------- */
.reveal{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .6s var(--ease),transform .6s var(--ease);
}
.reveal.in{opacity:1;transform:translateY(0)}

/* ---------- 断点 ---------- */
@media (max-width:1199.98px){
  .zig-row{gap:40px}
}
@media (max-width:991.98px){
  .nav-wrap{gap:14px;height:64px}
  .nav-chips{
    margin:0;
    flex:1 1 auto;
    justify-content:flex-start;
    overflow-x:auto;
    scrollbar-width:none;
    -ms-overflow-style:none;
  }
  .nav-chips::-webkit-scrollbar{display:none}
  .chip{padding:7px 14px;font-size:14px}
  .nav-divider,.nav-cta{display:none}
  .nav-toggle{display:inline-flex}
  .section{padding:64px 0}
  .section.tight{padding:56px 0}
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .stat:nth-child(3){border-left:0}
  .stat:nth-child(n+3){border-top:1px solid var(--line)}
  .zig-row{grid-template-columns:1fr;gap:28px;padding:36px 0}
  .zig-row.flip .zig-media{order:0}
  .scene-grid{grid-template-columns:1fr;gap:20px}
  .steps{grid-template-columns:repeat(2,1fr)}
  .cta-band{padding:64px 0}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:575.98px){
  .brand-name{font-size:17px}
  .cat-hero{min-height:320px;padding:48px 0}
  .cat-hero-actions .btn-accent,
  .cat-hero-actions .btn-ghost{width:100%}
  .cta-actions .btn-accent,
  .cta-actions .btn-ghost{width:100%}
  .stat-grid{grid-template-columns:1fr}
  .stat + .stat{border-left:0;border-top:1px solid var(--line)}
  .stat{padding:24px 20px}
  .steps{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr;gap:32px}
  .foot-bottom{flex-direction:column;align-items:flex-start}
  .zig-body h3{font-size:20px}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    transition-delay:0ms !important;
    scroll-behavior:auto !important;
  }
  .reveal{opacity:1;transform:none}
}