/* roulang page: index */
:root{
  --brand-900:#101A17;
  --brand-700:#1B4D3E;
  --brand-500:#2F6B57;
  --ember-500:#D9542B;
  --ember-600:#C4461F;
  --moss-300:#7FA88F;
  --sand-50:#F6F3ED;
  --surface:#FFFFFF;
  --line:#E3DED4;
  --ink:#1C2321;
  --muted:#5D6B65;
  --radius-card:14px;
  --radius-img:12px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(16,26,23,.05), 0 10px 28px -18px rgba(16,26,23,.18);
  --shadow-2:0 2px 6px rgba(16,26,23,.07), 0 20px 44px -20px rgba(16,26,23,.24);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
html,body{font-family:"Inter","Helvetica Neue",Arial,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif}
body{margin:0;background:var(--sand-50);color:var(--ink);font-size:16px;line-height:1.85;-webkit-font-smoothing:antialiased}
body h1{margin:0;font-size:clamp(30px,4.4vw,50px);line-height:1.18;font-weight:800;letter-spacing:-0.015em}
body h2{margin:0;font-size:clamp(24px,3.1vw,34px);line-height:1.25;font-weight:700;letter-spacing:-0.015em}
body h3{margin:0;font-size:20px;line-height:1.4;font-weight:600;letter-spacing:-0.015em}
body p{margin:0}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;border:0;background:none;cursor:pointer}
:focus-visible{outline:2px solid var(--brand-700);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
@media (max-width:1023px){.container{padding:0 24px}}
@media (max-width:639px){.container{padding:0 18px}}
@media (max-width:1023px){body{padding-bottom:72px}}

/* ---------- header / nav ---------- */
.site-header{position:fixed;top:0;left:0;right:0;z-index:60;border-bottom:1px solid transparent;transition:background-color .24s ease,border-color .24s ease,backdrop-filter .24s ease}
.site-header.is-scrolled{background:rgba(246,243,237,.86);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom-color:var(--line)}
.nav-inner{display:flex;align-items:center;gap:20px;height:64px}
.nav-left{display:flex;align-items:center;gap:26px;flex:1 1 auto;min-width:0}
.nav-right{display:flex;align-items:center;gap:12px;margin-left:auto}
.nav-divider{width:1px;height:22px;background:var(--line);flex:0 0 auto}
.logo{display:flex;flex-direction:column;line-height:1.06;letter-spacing:-0.02em}
.logo-main{font-size:19px;font-weight:800;color:var(--brand-900)}
.logo-sub{font-size:11.8px;font-weight:500;color:var(--muted)}
.nav-menu{display:flex;align-items:center;gap:16px}
.nav-link{position:relative;display:inline-block;padding:6px 0;font-size:14px;color:var(--ink);transition:color .2s ease;white-space:nowrap}
.nav-link::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--brand-700);transition:width .22s ease}
.nav-link:hover{color:var(--brand-700)}
.nav-link:hover::after{width:100%}
.nav-link.is-active{color:var(--brand-700);font-weight:600}
.nav-link.is-active::after{width:100%}
.icon-btn{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);color:var(--brand-700);background:transparent;transition:background-color .2s ease,border-color .2s ease,color .2s ease}
.icon-btn:hover{border-color:var(--brand-500);background:rgba(127,168,143,.14)}
.nav-cta{display:inline-flex;align-items:center;justify-content:center;height:40px;padding:0 18px;border-radius:10px;background:var(--ember-500);color:#fff;font-size:14px;font-weight:600;transition:background-color .2s ease,transform .2s ease,box-shadow .2s ease}
.nav-cta:hover{background:var(--ember-600);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.burger{display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);align-items:center;justify-content:center;color:var(--brand-700)}
.burger:hover{border-color:var(--brand-500)}
@media (max-width:1023px){
  .nav-menu,.nav-divider{display:none}
  .burger{display:inline-flex}
  .nav-inner{height:56px}
  .logo-main{font-size:17px}
  .logo-sub{font-size:10.6px}
}
/* drawer */
.drawer-mask{position:fixed;inset:0;background:rgba(16,26,23,.42);opacity:0;pointer-events:none;transition:opacity .24s ease;z-index:80}
.drawer-mask.is-open{opacity:1;pointer-events:auto}
.drawer{position:fixed;top:0;right:0;bottom:0;width:84%;max-width:340px;background:var(--surface);z-index:90;transform:translateX(100%);transition:transform .28s cubic-bezier(.22,.61,.36,1);display:flex;flex-direction:column;box-shadow:-24px 0 60px -30px rgba(16,26,23,.4)}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--line)}
.drawer-body{padding:12px 20px;overflow-y:auto;flex:1}
.drawer-link{display:flex;align-items:center;height:48px;font-size:17px;color:var(--ink);border-bottom:1px solid var(--line);transition:color .2s ease,padding-left .2s ease}
.drawer-link:hover{color:var(--brand-700);padding-left:6px}
.drawer-link.is-active{color:var(--brand-700);font-weight:600}
.drawer-foot{padding:16px 20px 24px;border-top:1px solid var(--line)}

/* ---------- generic ui ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 28px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;border:1.5px solid transparent;transition:transform .2s ease,background-color .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease}
.btn-primary{background:var(--ember-500);color:#fff;box-shadow:var(--shadow-1)}
.btn-primary:hover{background:var(--ember-600);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-primary:active{transform:translateY(0)}
.btn-secondary{background:transparent;border-color:var(--brand-700);color:var(--brand-700)}
.btn-secondary:hover{background:var(--brand-700);color:#fff}
.btn svg{flex:0 0 auto}
.textlink{display:inline-flex;align-items:center;gap:6px;color:var(--brand-700);font-weight:600;font-size:15px}
.textlink svg{transition:transform .2s ease}
.textlink:hover svg{transform:translateX(4px)}
.badge{display:inline-flex;align-items:center;border-radius:999px;background:rgba(127,168,143,.16);color:var(--brand-700);font-size:12.5px;line-height:1.6;padding:4px 12px}
.rule-short{width:40px;height:3px;border-radius:2px;background:var(--ember-500);margin-bottom:20px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-1);transition:transform .24s ease,box-shadow .24s ease}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
.img-frame{position:relative;border-radius:var(--radius-img);overflow:hidden;background:var(--sand-50)}
.img-frame::after{content:"";position:absolute;inset:0;border-radius:var(--radius-img);box-shadow:inset 0 0 0 1px rgba(255,255,255,.06);pointer-events:none}
.img-frame img{width:100%;height:100%;object-fit:cover}

/* ---------- sections ---------- */
.section{padding:104px 0}
@media (max-width:1023px){.section{padding:72px 0}}
@media (max-width:639px){.section{padding:56px 0}}
.sec-head{max-width:720px}
.sec-sub{margin-top:12px;color:var(--muted);font-size:15px;line-height:1.8}

/* ---------- hero ---------- */
.hero{padding-top:140px;padding-bottom:96px}
@media (max-width:1023px){.hero{padding-top:104px;padding-bottom:64px}}
.hero-grid{display:grid;grid-template-columns:1.18fr 1fr;gap:56px;align-items:center}
@media (max-width:1023px){.hero-grid{grid-template-columns:1fr;gap:36px}}
.hero-sub{margin-top:16px;font-size:17px;color:var(--muted);line-height:1.8;max-width:520px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.trust-row{display:flex;flex-wrap:wrap;gap:22px;margin-top:36px;padding-top:24px;border-top:1px solid var(--line)}
.trust-item{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--muted)}
.trust-item svg{color:var(--brand-500)}
.hero-visual{position:relative}
.hero-visual .img-frame{aspect-ratio:16/10}
@media (max-width:1023px){.hero-visual .img-frame{aspect-ratio:auto;height:240px}}
.float-card{position:absolute;right:-14px;bottom:-26px;width:250px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-2);padding:18px 20px;animation:floaty 6s ease-in-out infinite}
.float-row{display:flex;align-items:baseline;gap:8px}
.float-num{font-size:22px;font-weight:800;color:var(--brand-700);letter-spacing:-0.02em}
.float-label{font-size:13px;color:var(--muted)}
.float-split{height:1px;background:var(--line);margin:12px 0}
@media (max-width:1023px){
  .float-card{position:static;width:100%;right:auto;bottom:auto;margin-top:14px;animation:none;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 18px}
  .float-split{display:none}
}
@keyframes floaty{0%,100%{transform:translateY(-6px)}50%{transform:translateY(6px)}}

/* ---------- value cards ---------- */
.value-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;margin-top:44px}
.value-lg{grid-column:span 7;padding:34px 34px 30px;position:relative}
.value-sm{grid-column:span 5;display:flex;gap:20px;align-items:flex-start;padding:24px}
.value-col{grid-column:span 5;display:flex;flex-direction:column;gap:24px}
.value-index{font-size:40px;font-weight:800;color:var(--brand-700);opacity:.9;letter-spacing:-0.03em;line-height:1}
.value-line{width:2px;background:var(--moss-300);border-radius:2px;align-self:stretch}
@media (max-width:1023px){
  .value-lg{grid-column:span 12}
  .value-col{grid-column:span 12}
  .value-sm{grid-column:span 12}
}
@media (max-width:639px){
  .value-lg{padding:26px 22px 24px}
  .value-sm{flex-direction:column;gap:12px}
  .value-line{display:none}
}

/* ---------- zigzag ---------- */
.zigzag{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;padding:44px 0;border-top:1px solid var(--line)}
.zigzag:first-of-type{border-top:0;padding-top:8px}
.zigzag.reverse .zz-media{order:2}
.zz-media .img-frame{aspect-ratio:16/10}
@media (max-width:1023px){
  .zigzag{grid-template-columns:1fr;gap:24px;padding:32px 0}
  .zigzag.reverse .zz-media{order:0}
}
.zz-step{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:14px}
.zz-step b{color:var(--brand-700);font-weight:800;font-size:15px}

/* ---------- stats ---------- */
.stat-band{display:grid;grid-template-columns:repeat(4,1fr);margin-top:44px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-1);overflow:hidden}
.stat-item{padding:28px 24px;border-left:1px solid var(--line)}
.stat-item:first-child{border-left:0}
.stat-num{font-size:40px;font-weight:800;color:var(--brand-700);letter-spacing:-0.02em;line-height:1.1}
.stat-unit{font-size:16px;font-weight:700;color:var(--brand-700);margin-left:4px}
.stat-desc{margin-top:8px;font-size:14px;color:var(--muted);line-height:1.7}
@media (max-width:767px){
  .stat-band{grid-template-columns:repeat(2,1fr)}
  .stat-item:nth-child(3){border-left:0}
  .stat-item:nth-child(n+3){border-top:1px solid var(--line)}
  .stat-num{font-size:32px}
}

/* ---------- quotes ---------- */
.quote-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:48px}
.quote-card{padding:30px 28px 26px;position:relative}
.quote-card:nth-child(2){transform:translateY(40px)}
@media (max-width:1023px){
  .quote-grid{grid-template-columns:1fr;gap:20px}
  .quote-card:nth-child(2){transform:none}
}
.quote-mark{font-size:52px;line-height:1;color:var(--moss-300);font-family:Georgia,serif}
.quote-text{margin-top:10px;font-size:16px;line-height:1.85}
.quote-author{display:flex;align-items:center;gap:12px;margin-top:22px;padding-top:18px;border-top:1px solid var(--line)}
.avatar{width:38px;height:38px;border-radius:999px;background:rgba(127,168,143,.22);color:var(--brand-700);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px}
.author-name{font-size:14px;font-weight:600}
.author-role{font-size:13px;color:var(--muted)}

/* ---------- cms list ---------- */
.list-tools{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;margin-top:28px}
.search-box{display:flex;gap:10px;width:100%;max-width:420px}
.search-box input{height:48px;flex:1;border:1px solid var(--line);border-radius:var(--radius-btn);background:var(--surface);padding:0 16px;font-size:15px;color:var(--ink);transition:border-color .2s ease,box-shadow .2s ease}
.search-box input::placeholder{color:#9AA6A0}
.search-box input:focus{outline:none;border-color:var(--brand-700);box-shadow:0 0 0 2px rgba(27,77,62,.14)}
.search-box button{height:48px;padding:0 22px;border-radius:var(--radius-btn);background:var(--brand-700);color:#fff;font-weight:600;font-size:15px;transition:background-color .2s ease,transform .2s ease}
.search-box button:hover{background:var(--brand-500);transform:translateY(-1px)}
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:36px}
@media (max-width:1023px){.post-grid{grid-template-columns:repeat(2,1fr);gap:20px}}
@media (max-width:639px){.post-grid{grid-template-columns:1fr}}
.post-card{display:flex;flex-direction:column;padding:22px}
.post-cover{aspect-ratio:16/9;overflow:hidden;border-radius:10px}
.post-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.post-card:hover .post-cover img{transform:scale(1.03)}
.post-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin:16px 0 10px;font-size:13px;color:var(--muted)}
.post-title{font-size:19px;font-weight:600;line-height:1.45;letter-spacing:-0.015em;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color .2s ease}
.post-card:hover .post-title{color:var(--brand-700)}
.post-excerpt{margin-top:10px;font-size:14px;color:var(--muted);line-height:1.75;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.post-foot{margin-top:auto;padding-top:16px}
.empty-state{display:flex;flex-direction:column;align-items:center;text-align:center;gap:14px;padding:56px 24px;border:1px dashed var(--line);border-radius:var(--radius-card);background:var(--surface);margin-top:36px}
.empty-state svg{color:var(--moss-300)}
.empty-state p{font-size:15px;color:var(--muted)}

/* ---------- faq ---------- */
.faq-list{margin-top:36px;display:flex;flex-direction:column;gap:14px}
.faq-item{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden}
.faq-item::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--brand-700);transform:scaleY(0);transform-origin:top;transition:transform .24s ease}
.faq-item[open]::before{transform:scaleY(1)}
.faq-item summary{position:relative;list-style:none;cursor:pointer;padding:20px 56px 20px 24px;font-size:17px;font-weight:600;color:var(--ink);transition:color .2s ease}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);font-size:20px;font-weight:400;color:var(--brand-700);transition:transform .24s ease}
.faq-item[open] summary::after{content:"−";transform:translateY(-50%) rotate(180deg)}
.faq-item[open] summary{color:var(--brand-700)}
.faq-body{padding:0 24px 22px;font-size:15px;color:var(--muted);line-height:1.85}

/* ---------- cta ---------- */
.cta-band{background:var(--brand-900);color:#EDF3EF;border-radius:18px;padding:56px 48px;display:grid;grid-template-columns:1.3fr 1fr;gap:40px;align-items:center}
.cta-band h2{color:#fff}
.cta-band p{margin-top:14px;font-size:15px;line-height:1.85;color:rgba(237,243,239,.78)}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end}
.btn-ghost{border-color:rgba(237,243,239,.4);color:#EDF3EF;background:transparent}
.btn-ghost:hover{background:rgba(237,243,239,.12);color:#fff}
@media (max-width:1023px){
  .cta-band{grid-template-columns:1fr;padding:40px 28px;gap:28px}
  .cta-actions{justify-content:flex-start}
}

/* ---------- footer ---------- */
.site-footer{background:var(--brand-900);color:#D7E1DB;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:0}
.footer-col{padding:56px 30px;border-left:1px solid rgba(255,255,255,.08)}
.footer-col:first-child{border-left:0;padding-left:0}
.footer-col:last-child{padding-right:0}
.footer-mark{width:34px;height:3px;border-radius:2px;background:var(--moss-300);margin-bottom:18px}
.footer-brand-main{font-size:19px;font-weight:800;color:#fff;letter-spacing:-0.02em;line-height:1.2}
.footer-brand-sub{font-size:11.8px;color:rgba(215,225,219,.7);letter-spacing:-0.02em}
.footer-desc{margin-top:16px;font-size:14px;line-height:1.85;color:rgba(215,225,219,.75);max-width:300px}
.footer-title{font-size:14px;font-weight:700;color:#fff;letter-spacing:.04em;margin-bottom:16px}
.footer-link{display:block;font-size:14px;color:rgba(215,225,219,.78);padding:6px 0;transition:color .2s ease,padding-left .2s ease}
.footer-link:hover{color:#fff;padding-left:4px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:22px 0;font-size:13px;color:rgba(215,225,219,.62);display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between}
@media (max-width:1023px){
  .footer-grid{grid-template-columns:repeat(2,1fr)}
  .footer-col{padding:34px 22px}
  .footer-col:nth-child(3){border-left:0;padding-left:0}
}
@media (max-width:639px){
  .footer-grid{grid-template-columns:1fr}
  .footer-col{border-left:0;padding:26px 0;border-top:1px solid rgba(255,255,255,.08)}
  .footer-col:first-child{border-top:0;padding-top:34px}
}

/* ---------- mobile conversion bar ---------- */
.mobile-bar{position:fixed;left:0;right:0;bottom:0;height:60px;z-index:70;background:var(--brand-900);display:none;align-items:center;justify-content:space-between;gap:14px;padding:0 18px;opacity:0;transform:translateY(100%);transition:opacity .26s ease,transform .26s ease}
.mobile-bar.is-visible{opacity:1;transform:translateY(0)}
.mobile-bar span{font-size:14px;color:#D7E1DB}
.mobile-bar .nav-cta{height:38px;padding:0 16px;font-size:14px}
@media (max-width:1023px){.mobile-bar{display:flex}}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .32s cubic-bezier(.22,.61,.36,1),transform .32s cubic-bezier(.22,.61,.36,1);transition-delay:var(--d,0ms)}
.reveal.is-visible{opacity:1;transform:translateY(0)}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  .reveal{transform:none;transition:opacity .2s linear;transition-delay:0ms}
  .float-card{animation:none}
  .post-card:hover .post-cover img{transform:none}
  .card:hover{transform:none}
}

/* roulang page: article */
:root{
  --brand-900:#101A17;
  --brand-700:#1B4D3E;
  --brand-500:#2F6B57;
  --ember-500:#D9542B;
  --ember-600:#C4461F;
  --moss-300:#7FA88F;
  --sand-50:#F6F3ED;
  --surface:#FFFFFF;
  --line:#E3DED4;
  --ink:#1C2321;
  --muted:#5D6B65;
  --radius-card:14px;
  --radius-img:12px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(16,26,23,.05), 0 10px 28px -18px rgba(16,26,23,.18);
  --shadow-2:0 2px 6px rgba(16,26,23,.07), 0 20px 44px -20px rgba(16,26,23,.24);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--sand-50);
  color:var(--ink);
  font-family:"Inter","Helvetica Neue",Arial,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
button{border:0;background:none;cursor:pointer}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand-700);outline-offset:2px}

.container{max-width:1200px;margin:0 auto;padding:0 32px}
@media (max-width:1023px){.container{padding:0 24px}}
@media (max-width:639px){.container{padding:0 18px}}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  height:64px;
  background:rgba(246,243,237,0);
  border-bottom:1px solid transparent;
  transition:background .24s ease,border-color .24s ease,backdrop-filter .24s ease;
}
.site-header.is-scrolled{
  background:rgba(246,243,237,.86);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav-inner{display:flex;align-items:center;height:64px;gap:20px}
.nav-left{display:flex;align-items:center;gap:28px;min-width:0}
.nav-right{display:flex;align-items:center;gap:14px;margin-left:auto}
.logo{display:flex;flex-direction:column;line-height:1.05;letter-spacing:-.02em}
.logo-main{font-size:19px;font-weight:800;color:var(--brand-900)}
.logo-sub{font-size:11.8px;font-weight:600;color:var(--brand-500);letter-spacing:.02em}
.nav-menu{display:flex;align-items:center;gap:4px;min-width:0}
.nav-link{
  position:relative;display:inline-block;padding:8px 10px;
  font-size:14.5px;font-weight:500;color:var(--ink);white-space:nowrap;
  transition:color .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:10px;right:10px;bottom:2px;height:2px;
  background:var(--brand-700);transform:scaleX(0);transform-origin:left;
  transition:transform .22s ease;
}
.nav-link:hover{color:var(--brand-700)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--brand-700);font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-divider{width:1px;height:26px;background:var(--line);flex:none}
.icon-btn{
  width:38px;height:38px;border-radius:999px;display:inline-flex;align-items:center;justify-content:center;
  color:var(--brand-900);border:1px solid var(--line);background:var(--surface);
  transition:color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.icon-btn:hover{color:var(--brand-700);border-color:var(--moss-300);transform:translateY(-1px);box-shadow:var(--shadow-1)}
.nav-cta{
  display:inline-flex;align-items:center;justify-content:center;
  height:40px;padding:0 20px;border-radius:var(--radius-btn);
  background:var(--ember-500);color:#fff;font-size:14.5px;font-weight:600;
  transition:background .2s ease,transform .2s ease,box-shadow .2s ease;
}
.nav-cta:hover{background:var(--ember-600);transform:translateY(-1px);box-shadow:var(--shadow-1)}
.nav-cta:active{transform:none;box-shadow:none}
.burger{
  display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
  background:var(--surface);align-items:center;justify-content:center;color:var(--brand-900);
}
@media (max-width:1179px){
  .nav-menu{gap:0}
  .nav-link{padding:8px 7px;font-size:13.6px}
}
@media (max-width:1023px){
  .site-header{height:56px}
  .nav-inner{height:56px}
  .nav-menu,.nav-divider,.icon-btn{display:none}
  .burger{display:inline-flex}
  .nav-cta{height:38px;padding:0 16px;font-size:14px}
}
@media (max-width:479px){
  .nav-cta{display:none}
}

/* ---------- drawer ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(16,26,23,.42);z-index:70;
  opacity:0;pointer-events:none;transition:opacity .24s ease;
}
.drawer-mask.is-open{opacity:1;pointer-events:auto}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(84vw,340px);z-index:80;
  background:var(--surface);transform:translateX(100%);
  transition:transform .28s var(--ease);
  display:flex;flex-direction:column;padding:18px 22px 26px;overflow-y:auto;
  box-shadow:-12px 0 40px -24px rgba(16,26,23,.4);
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:flex-start;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line)}
.drawer-close{width:38px;height:38px;border-radius:10px;border:1px solid var(--line);font-size:20px;line-height:1;color:var(--brand-900)}
.drawer-nav{display:flex;flex-direction:column;margin:10px 0 22px}
.drawer-link{
  height:48px;display:flex;align-items:center;font-size:16px;font-weight:500;
  border-bottom:1px solid var(--line);color:var(--ink);
}
.drawer-link.is-active{color:var(--brand-700);font-weight:600}
.drawer-cta{width:100%;height:48px}

/* ---------- page shell ---------- */
main{display:block;padding-top:64px}
@media (max-width:1023px){main{padding-top:56px}}

.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:14px;color:var(--muted);padding-top:26px;
}
.crumbs a{color:var(--muted);transition:color .2s ease}
.crumbs a:hover{color:var(--brand-700)}
.crumbs .sep{color:var(--line)}
.crumbs .current{color:var(--ink);font-weight:500}

/* ---------- article head ---------- */
.article-head{padding:22px 0 0}
.article-head-inner{max-width:760px;margin:0 auto}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:13px;font-weight:600;color:var(--brand-700);letter-spacing:.04em;
}
.eyebrow::before{content:"";width:40px;height:3px;background:var(--ember-500);border-radius:2px}
.article-h1{
  margin-top:16px;
  font-size:clamp(28px,4.4vw,48px);
  line-height:1.18;font-weight:800;letter-spacing:-.015em;color:var(--brand-900);
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  margin-top:20px;font-size:13px;color:var(--muted);
}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:999px;
  background:rgba(127,168,143,.16);color:var(--brand-700);font-size:12.5px;font-weight:600;
}
.meta-sep{width:1px;height:14px;background:var(--line)}
.head-rule{height:1px;background:var(--line);margin:24px 0 0}

/* ---------- article layout ---------- */
.article-layout{
  max-width:1200px;margin:0 auto;padding:36px 32px 0;
  display:grid;grid-template-columns:minmax(0,1fr);gap:0;
}
.article-main{min-width:0}
.article-inner{max-width:760px;margin:0 auto}
.article-side{display:none}
@media (min-width:1280px){
  .article-layout{grid-template-columns:minmax(0,1fr) 240px;gap:52px;align-items:start}
  .article-side{display:block;position:sticky;top:96px}
  .article-inner{margin:0;max-width:760px}
}
@media (max-width:1023px){.article-layout{padding:28px 24px 0}}
@media (max-width:639px){.article-layout{padding:22px 18px 0}}

/* ---------- article body ---------- */
.article-body{font-size:16px;line-height:1.85;color:var(--ink)}
.article-body > p{margin-bottom:1.2em}
.article-body > p:first-of-type{font-size:17px;color:#161d1b}
.article-body h2{
  margin:40px 0 16px;padding-left:14px;border-left:3px solid var(--brand-700);
  font-size:clamp(24px,3.2vw,32px);line-height:1.3;font-weight:700;letter-spacing:-.015em;color:var(--brand-900);
}
.article-body h3{margin:32px 0 12px;font-size:21px;line-height:1.4;font-weight:600;color:var(--brand-900)}
.article-body h4{margin:24px 0 10px;font-size:17px;font-weight:600;color:var(--brand-700)}
.article-body a{color:var(--brand-700);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
.article-body a:hover{color:var(--ember-600)}
.article-body strong{color:var(--brand-900);font-weight:700}
.article-body ul,.article-body ol{margin:0 0 1.3em;padding-left:24px}
.article-body ul li{position:relative;list-style:none;margin-bottom:9px}
.article-body ul li::before{
  content:"";position:absolute;left:-18px;top:.72em;width:7px;height:7px;border-radius:999px;background:var(--moss-300);
}
.article-body ol{list-style:decimal}
.article-body ol li{margin-bottom:9px;padding-left:4px}
.article-body ol li::marker{color:var(--brand-700);font-weight:700}
.article-body blockquote{
  margin:26px 0;padding:18px 22px;background:var(--sand-50);
  border-left:4px solid var(--moss-300);border-radius:0 var(--radius-img) var(--radius-img) 0;color:var(--muted);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{
  width:100%;object-fit:cover;border-radius:var(--radius-img);margin:26px 0 8px;
  border:1px solid rgba(16,26,23,.06);
}
.article-body figure{margin:26px 0}
.article-body figcaption,
.article-body .img-caption{font-size:13px;color:var(--muted);text-align:center;margin-top:8px}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px}
.article-body th{text-align:left;font-weight:600;color:var(--brand-900);border-bottom:1px solid var(--brand-700);padding:11px 10px}
.article-body td{border-bottom:1px solid var(--line);padding:11px 10px;color:var(--ink)}
.article-body hr{border:0;border-top:1px solid var(--line);margin:34px 0}
.article-body code{
  background:var(--sand-50);border:1px solid var(--line);border-radius:6px;
  padding:1px 6px;font-size:14px;color:var(--brand-700);
}

.empty-state{
  max-width:760px;margin:0 auto;padding:56px 24px;text-align:center;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-1);
}
.empty-icon{
  width:52px;height:52px;border-radius:999px;margin:0 auto 16px;
  display:flex;align-items:center;justify-content:center;background:rgba(127,168,143,.16);color:var(--brand-700);
}
.empty-state p{font-size:15px;color:var(--muted);margin-bottom:18px}

/* ---------- tags & tail ---------- */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:44px;padding-top:24px;border-top:1px solid var(--line)}
.back-link{
  display:inline-flex;align-items:center;gap:8px;margin-top:22px;
  font-size:15px;font-weight:600;color:var(--brand-700);
}
.back-link svg{transition:transform .22s ease}
.back-link:hover svg{transform:translateX(4px)}

/* ---------- side panel ---------- */
.side-panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:22px 20px;box-shadow:var(--shadow-1)}
.side-title{font-size:13px;font-weight:700;color:var(--brand-900);letter-spacing:.04em;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-title::before{content:"";width:18px;height:3px;background:var(--moss-300);border-radius:2px}
.side-list li{border-top:1px solid var(--line);padding:12px 0}
.side-list li:first-child{border-top:0;padding-top:0}
.side-list a{font-size:14px;color:var(--ink);line-height:1.6;display:block;transition:color .2s ease}
.side-list a:hover{color:var(--brand-700)}
.side-note{margin-top:16px;font-size:12.5px;color:var(--muted);line-height:1.7}
.side-cta{display:inline-flex;width:100%;margin-top:16px;height:44px;align-items:center;justify-content:center}

/* ---------- section base ---------- */
.section{padding:96px 0}
.section-tight{padding:64px 0}
@media (max-width:1023px){.section{padding:72px 0}.section-tight{padding:52px 0}}
@media (max-width:639px){.section{padding:56px 0}.section-tight{padding:44px 0}}
.section-head{margin-bottom:40px}
.section-head .eyebrow{margin-bottom:14px;display:inline-flex}
.section-title{font-size:clamp(24px,3.6vw,34px);line-height:1.25;font-weight:700;letter-spacing:-.015em;color:var(--brand-900)}
.section-sub{margin-top:10px;font-size:15px;color:var(--muted)}
.section-split{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:18px}
.text-link{
  display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;color:var(--brand-700);
}
.text-link svg{transition:transform .22s ease}
.text-link:hover svg{transform:translateX(4px)}

/* ---------- cards ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
@media (max-width:1023px){.card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:639px){.card-grid{grid-template-columns:minmax(0,1fr)}}
.card{
  display:flex;flex-direction:column;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--radius-card);padding:22px;
  box-shadow:var(--shadow-1);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--moss-300)}
.card-media{overflow:hidden;border-radius:10px;margin-bottom:16px;background:var(--sand-50)}
.card-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .4s var(--ease)}
.card:hover .card-media img{transform:scale(1.03)}
.card-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--muted);margin-bottom:10px}
.card-title{font-size:19px;line-height:1.45;font-weight:600;color:var(--brand-900);transition:color .2s ease}
.card:hover .card-title{color:var(--brand-700)}
.card-desc{margin-top:10px;font-size:14px;line-height:1.75;color:var(--muted)}
.card-foot{margin-top:auto;padding-top:18px}
.card-foot .text-link{font-size:14px}

/* ---------- faq ---------- */
.faq-wrap{max-width:820px;margin:0 auto}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  margin-bottom:12px;overflow:hidden;transition:box-shadow .24s ease,border-color .24s ease;
}
.faq-item[open]{box-shadow:var(--shadow-1);border-color:#d5cfc3}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;font-size:16.5px;font-weight:600;color:var(--brand-900);
  cursor:pointer;list-style:none;position:relative;
}
.faq-q::-webkit-details-marker{display:none}
.faq-item[open] .faq-q{color:var(--brand-700);border-left:3px solid var(--brand-700);padding-left:19px}
.faq-q .plus{
  flex:none;width:24px;height:24px;border-radius:999px;border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;font-size:16px;line-height:1;color:var(--brand-700);
  transition:transform .24s ease,background .24s ease;
}
.faq-item[open] .plus{transform:rotate(180deg);background:rgba(127,168,143,.16);border-color:transparent}
.faq-a{padding:0 22px 20px;font-size:15px;line-height:1.85;color:var(--muted)}

/* ---------- cta band ---------- */
.cta-band{background:var(--brand-900);color:#fff;padding:80px 0;position:relative;overflow:hidden}
.cta-band::after{
  content:"";position:absolute;right:-120px;top:-120px;width:340px;height:340px;border-radius:999px;
  background:rgba(127,168,143,.14);
}
.cta-band .container{position:relative;z-index:1}
.cta-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:32px}
.cta-text{max-width:620px}
.cta-kicker{display:inline-flex;align-items:center;gap:10px;font-size:13px;letter-spacing:.06em;font-weight:600;color:var(--moss-300)}
.cta-kicker::before{content:"";width:40px;height:3px;background:var(--ember-500);border-radius:2px}
.cta-title{margin-top:16px;font-size:clamp(26px,4vw,38px);line-height:1.25;font-weight:800;letter-spacing:-.015em;color:#fff}
.cta-sub{margin-top:12px;font-size:15.5px;line-height:1.85;color:rgba(215,225,219,.82)}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;transition:background .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--ember-500);color:#fff}
.btn-primary:hover{background:var(--ember-600);transform:translateY(-1px);box-shadow:0 12px 26px -14px rgba(196,70,31,.75)}
.btn-primary:active{transform:none;box-shadow:none}
.btn-ghost{border:1.5px solid rgba(255,255,255,.55);color:#fff}
.btn-ghost:hover{background:#fff;color:var(--brand-900);border-color:#fff;transform:translateY(-1px)}
.btn-outline{border:1.5px solid var(--brand-700);color:var(--brand-700);background:transparent}
.btn-outline:hover{background:var(--brand-700);color:#fff;transform:translateY(-1px)}

/* ---------- footer ---------- */
.site-footer{background:var(--brand-900);color:rgba(215,225,219,.82);padding:72px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.4fr;gap:32px}
.footer-col{position:relative;padding-left:0}
.footer-col + .footer-col{border-left:1px solid rgba(255,255,255,.08);padding-left:32px}
.footer-mark{width:32px;height:3px;background:var(--moss-300);border-radius:2px;margin-bottom:16px}
.footer-brand-main{font-size:19px;font-weight:800;color:#fff;letter-spacing:-.02em;line-height:1.2}
.footer-brand-sub{font-size:11.8px;font-weight:600;color:var(--moss-300);margin-bottom:14px}
.footer-desc{font-size:14px;line-height:1.9;color:rgba(215,225,219,.72)}
.footer-title{font-size:13px;font-weight:700;color:#fff;letter-spacing:.06em;margin-bottom:16px}
.footer-link{display:block;font-size:14px;color:rgba(215,225,219,.78);padding:6px 0;transition:color .2s ease}
.footer-link:hover{color:#fff}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:13px;color:rgba(215,225,219,.6);
}
@media (max-width:1023px){
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}
  .footer-col + .footer-col{border-left:0;padding-left:0}
}
@media (max-width:639px){
  .site-footer{padding:52px 0 24px}
  .footer-grid{grid-template-columns:minmax(0,1fr)}
}

/* ---------- mobile fixed bar ---------- */
.mobile-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:55;
  display:none;align-items:center;justify-content:space-between;gap:14px;
  height:60px;padding:0 18px;background:var(--brand-900);
  border-top:1px solid rgba(255,255,255,.1);
  transform:translateY(100%);opacity:0;transition:transform .28s var(--ease),opacity .28s ease;
}
.mobile-cta.is-visible{transform:translateY(0);opacity:1}
.mobile-cta span{font-size:13.5px;color:rgba(215,225,219,.86);line-height:1.4}
.mobile-cta .btn{height:40px;padding:0 18px;font-size:14px}
@media (max-width:1023px){
  .mobile-cta{display:flex}
  body{padding-bottom:72px}
}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .32s var(--ease),transform .32s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{transform:none;transition:opacity .3s linear}
  .card:hover{transform:none}
  .card:hover .card-media img{transform:none}
  .btn:hover,.nav-cta:hover{transform:none}
}

/* roulang page: category1 */
:root {
    --brand-900: #101A17;
    --brand-700: #1B4D3E;
    --brand-500: #2F6B57;
    --ember-500: #D9542B;
    --ember-600: #C4461F;
    --moss-300: #7FA88F;
    --sand-50: #F6F3ED;
    --surface: #FFFFFF;
    --line: #E3DED4;
    --ink: #1C2321;
    --muted: #5D6B65;
    --radius-card: 14px;
    --radius-img: 12px;
    --radius-btn: 10px;
    --shadow-1: 0 1px 2px rgba(16, 26, 23, .05), 0 10px 28px -18px rgba(16, 26, 23, .18);
    --shadow-2: 0 2px 6px rgba(16, 26, 23, .07), 0 20px 44px -20px rgba(16, 26, 23, .24);
    --ease: cubic-bezier(.22, .61, .36, 1);
  }

  * { box-sizing: border-box; }
  html { scroll-behavior: smooth; }
  body {
    margin: 0;
    background: var(--sand-50);
    color: var(--ink);
    font-family: "Inter", "Helvetica Neue", Arial, "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
    font-size: 16px;
    line-height: 1.85;
    -webkit-font-smoothing: antialiased;
  }
  img { max-width: 100%; display: block; }
  a { color: inherit; text-decoration: none; }
  button { font-family: inherit; }
  h1, h2, h3, h4 { margin: 0; letter-spacing: -.015em; color: var(--ink); }
  h1 { font-size: 44px; line-height: 1.18; font-weight: 800; }
  h2 { font-size: 32px; line-height: 1.25; font-weight: 700; }
  h3 { font-size: 21px; line-height: 1.4; font-weight: 600; }
  p { margin: 0; }
  ul, ol { margin: 0; padding: 0; list-style: none; }

  .container { max-width: 1200px; margin: 0 auto; padding: 0 32px; }

  /* ---------- 顶部导航 ---------- */
  .site-header {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 60;
    border-bottom: 1px solid transparent;
    transition: background .24s var(--ease), border-color .24s var(--ease), box-shadow .24s var(--ease);
  }
  .site-header.is-scrolled {
    background: rgba(246, 243, 237, .86);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom-color: var(--line);
    box-shadow: 0 1px 2px rgba(16, 26, 23, .04);
  }
  .nav-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; gap: 20px; }
  .nav-left { display: flex; align-items: center; gap: 30px; min-width: 0; }
  .logo { display: flex; flex-direction: column; line-height: 1.05; }
  .logo-main { font-size: 18px; font-weight: 800; letter-spacing: -.02em; color: var(--ink); }
  .logo-sub { font-size: 11.2px; font-weight: 600; letter-spacing: .14em; color: var(--muted); margin-top: 2px; }
  .nav-menu { display: flex; align-items: center; gap: 24px; }
  .nav-link {
    position: relative;
    font-size: 15px;
    color: var(--ink);
    padding: 6px 0;
    transition: color .2s var(--ease);
    white-space: nowrap;
  }
  .nav-link::after {
    content: "";
    position: absolute;
    left: 0; bottom: -1px;
    height: 2px; width: 0;
    background: var(--brand-700);
    transition: width .22s var(--ease);
  }
  .nav-link:hover { color: var(--brand-700); }
  .nav-link:hover::after { width: 100%; }
  .nav-link.is-active { color: var(--brand-700); font-weight: 600; }
  .nav-link.is-active::after { width: 100%; }
  .nav-divider { width: 1px; height: 24px; background: var(--line); flex: none; }
  .nav-right { display: flex; align-items: center; gap: 12px; }
  .icon-btn {
    width: 40px; height: 40px;
    display: inline-flex; align-items: center; justify-content: center;
    border: 1px solid var(--line);
    border-radius: var(--radius-btn);
    background: rgba(255, 255, 255, .7);
    color: var(--muted);
    cursor: pointer;
    transition: color .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease);
  }
  .icon-btn:hover { color: var(--brand-700); border-color: var(--brand-500); background: #fff; }
  .nav-cta {
    display: inline-flex; align-items: center; justify-content: center;
    height: 40px; padding: 0 20px;
    background: var(--ember-500);
    color: #fff;
    font-size: 15px;
    font-weight: 600;
    border-radius: var(--radius-btn);
    transition: background .2s var(--ease), transform .2s var(--ease), box-shadow .2s var(--ease);
  }
  .nav-cta:hover { background: var(--ember-600); transform: translateY(-1px); box-shadow: var(--shadow-2); }
  .nav-cta:active { transform: translateY(0); box-shadow: none; }
  .burger {
    display: none;
    width: 40px; height: 40px;
    align-items: center; justify-content: center;
    border: 1px solid var(--line);
    border-radius: var(--radius-btn);
    background: rgba(255, 255, 255, .7);
    color: var(--ink);
    cursor: pointer;
  }
  .burger:hover { color: var(--brand-700); border-color: var(--brand-500); }
  :focus-visible { outline: 2px solid var(--brand-700); outline-offset: 2px; }

  /* ---------- 移动抽屉 ---------- */
  .drawer {
    position: fixed;
    top: 0; right: 0;
    width: 300px; max-width: 84vw;
    height: 100%;
    background: var(--surface);
    z-index: 90;
    transform: translateX(102%);
    transition: transform .28s var(--ease);
    display: flex; flex-direction: column;
    padding: 22px 22px 28px;
    box-shadow: -20px 0 60px -30px rgba(16, 26, 23, .5);
  }
  .drawer.is-open { transform: translateX(0); }
  .drawer-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; }
  .drawer-brand { display: flex; flex-direction: column; line-height: 1.05; }
  .drawer-brand .logo-main { font-size: 17px; }
  .drawer-brand .logo-sub { font-size: 10.6px; }
  .drawer-close {
    width: 36px; height: 36px;
    border: 1px solid var(--line);
    border-radius: var(--radius-btn);
    background: #fff;
    color: var(--muted);
    cursor: pointer;
    font-size: 18px;
    line-height: 1;
  }
  .drawer-nav { display: flex; flex-direction: column; border-top: 1px solid var(--line); }
  .drawer-nav a {
    display: flex; align-items: center;
    height: 48px;
    font-size: 17px;
    color: var(--ink);
    border-bottom: 1px solid var(--line);
    transition: color .2s var(--ease), padding-left .2s var(--ease);
  }
  .drawer-nav a:hover, .drawer-nav a.is-active { color: var(--brand-700); padding-left: 6px; }
  .drawer-cta {
    margin-top: auto;
    display: flex; align-items: center; justify-content: center;
    height: 48px;
    background: var(--ember-500);
    color: #fff;
    font-weight: 600;
    border-radius: var(--radius-btn);
    transition: background .2s var(--ease);
  }
  .drawer-cta:hover { background: var(--ember-600); }
  .drawer-mask {
    position: fixed; inset: 0;
    background: rgba(16, 26, 23, .42);
    opacity: 0; visibility: hidden;
    transition: opacity .26s var(--ease), visibility .26s;
    z-index: 80;
  }
  .drawer-mask.is-open { opacity: 1; visibility: visible; }

  /* ---------- 按钮 ---------- */
  .btn {
    display: inline-flex; align-items: center; justify-content: center;
    gap: 8px;
    height: 48px;
    padding: 0 28px;
    border-radius: var(--radius-btn);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    border: 1.5px solid transparent;
    transition: background .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease), transform .2s var(--ease), box-shadow .2s var(--ease);
  }
  .btn-primary { background: var(--ember-500); color: #fff; }
  .btn-primary:hover { background: var(--ember-600); transform: translateY(-1px); box-shadow: var(--shadow-2); }
  .btn-primary:active { transform: translateY(0); box-shadow: var(--shadow-1); }
  .btn-outline { background: transparent; border-color: var(--brand-700); color: var(--brand-700); }
  .btn-outline:hover { background: var(--brand-700); color: #fff; }
  .btn-sm { height: 40px; padding: 0 18px; font-size: 15px; }
  .btn-block { width: 100%; }
  .arrow-link {
    display: inline-flex; align-items: center; gap: 6px;
    color: var(--brand-700);
    font-size: 15px;
    font-weight: 600;
    transition: color .2s var(--ease);
  }
  .arrow-link svg { transition: transform .22s var(--ease); }
  .arrow-link:hover { color: var(--brand-500); }
  .arrow-link:hover svg { transform: translateX(4px); }

  /* ---------- 徽章 / 标签 ---------- */
  .badge {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 4px 12px;
    border-radius: 999px;
    background: rgba(127, 168, 143, .16);
    color: var(--brand-700);
    font-size: 12.5px;
    font-weight: 600;
    line-height: 1.6;
  }
  .eyebrow {
    display: inline-flex; align-items: center; gap: 8px;
    font-size: 13px;
    color: var(--muted);
    letter-spacing: .04em;
  }
  .rule-line { display: block; width: 40px; height: 3px; background: var(--ember-500); border-radius: 2px; }
  .dot-rule { display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: var(--moss-300); }

  /* ---------- 面包屑 ---------- */
  .breadcrumb { font-size: 14px; color: var(--muted); display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
  .breadcrumb a { color: var(--muted); transition: color .2s var(--ease); }
  .breadcrumb a:hover { color: var(--brand-700); }
  .breadcrumb .sep { color: var(--line); }
  .breadcrumb .current { color: var(--ink); }

  /* ---------- 内页 Hero ---------- */
  .page-hero {
    position: relative;
    overflow: hidden;
    background: var(--surface);
    padding: calc(64px + 56px) 0 56px;
    border-bottom: 1px solid var(--line);
  }
  .page-hero__bg {
    position: absolute; inset: 0;
    background-image: url("/assets/images/backpic/back-2.png");
    background-size: cover;
    background-position: center;
    opacity: .13;
  }
  .page-hero__fade {
    position: absolute; inset: 0;
    background: linear-gradient(90deg, rgba(255, 255, 255, .96) 0%, rgba(255, 255, 255, .82) 48%, rgba(255, 255, 255, .6) 100%);
  }
  .page-hero__inner { position: relative; max-width: 780px; }
  .page-hero h1 { margin-top: 18px; }
  .page-hero__lead { margin-top: 16px; font-size: 17px; color: var(--muted); max-width: 640px; }
  .page-hero__meta { margin-top: 24px; display: flex; flex-wrap: wrap; gap: 10px; }

  /* ---------- 板块通用 ---------- */
  .section { padding: 96px 0; }
  .section--white { background: var(--surface); }
  .section--sand { background: var(--sand-50); }
  .section-head { max-width: 720px; margin-bottom: 40px; }
  .section-head h2 { margin-top: 14px; }
  .section-sub { margin-top: 12px; font-size: 15px; color: var(--muted); }
  .hairline { height: 1px; background: var(--line); border: 0; margin: 0; }

  /* ---------- 双栏布局 ---------- */
  .split { display: grid; grid-template-columns: minmax(0, 62fr) minmax(0, 38fr); gap: 24px; align-items: start; }
  .split-main { min-width: 0; }
  .split-side { min-width: 0; }

  .sticky-panel {
    position: sticky;
    top: 96px;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius-card);
    padding: 26px 24px;
    box-shadow: var(--shadow-1);
  }
  .sticky-panel h3 { font-size: 19px; }
  .sticky-panel .panel-desc { margin-top: 10px; font-size: 14px; color: var(--muted); }
  .point-list { margin-top: 20px; border-top: 1px solid var(--line); }
  .point-item { display: flex; gap: 12px; padding: 14px 0; border-bottom: 1px solid var(--line); }
  .point-item .p-num {
    flex: none;
    width: 26px; height: 26px;
    border-radius: 50%;
    background: rgba(127, 168, 143, .18);
    color: var(--brand-700);
    font-size: 12.5px;
    font-weight: 700;
    display: flex; align-items: center; justify-content: center;
    line-height: 1;
    margin-top: 4px;
  }
  .point-item .p-title { font-size: 15px; font-weight: 600; color: var(--ink); }
  .point-item .p-text { font-size: 13.5px; color: var(--muted); line-height: 1.7; margin-top: 2px; }
  .panel-cta { margin-top: 22px; display: flex; flex-direction: column; gap: 12px; }
  .panel-note {
    margin-top: 18px;
    padding: 14px 16px;
    background: var(--sand-50);
    border-radius: 10px;
    font-size: 13px;
    color: var(--muted);
    line-height: 1.75;
  }

  /* ---------- 图文交错 ---------- */
  .zig {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 28px;
    align-items: center;
    padding: 32px 0;
    border-bottom: 1px solid var(--line);
  }
  .zig:first-of-type { padding-top: 8px; }
  .zig:last-of-type { border-bottom: 0; padding-bottom: 0; }
  .zig-media {
    position: relative;
    border-radius: var(--radius-img);
    overflow: hidden;
    aspect-ratio: 16 / 10;
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .06), var(--shadow-1);
    background: var(--sand-50);
  }
  .zig-media img {
    width: 100%; height: 100%;
    object-fit: cover;
    transition: transform .4s var(--ease);
  }
  .zig:hover .zig-media img { transform: scale(1.03); }
  .zig.reverse .zig-media { order: 2; }
  .zig-body .zig-step {
    display: inline-flex; align-items: center; gap: 8px;
    font-size: 13px; color: var(--muted); letter-spacing: .04em;
  }
  .zig-body h3 { margin-top: 10px; }
  .zig-body p { margin-top: 12px; font-size: 15.5px; color: var(--muted); line-height: 1.8; }
  .zig-body .arrow-link { margin-top: 16px; }

  /* ---------- 有序条目列表 ---------- */
  .ordered { margin-top: 8px; }
  .ordered-item {
    display: grid;
    grid-template-columns: 56px minmax(0, 1fr);
    gap: 16px;
    padding: 20px 0;
    border-bottom: 1px solid var(--line);
  }
  .ordered-item:last-child { border-bottom: 0; }
  .ordered-item .o-num { font-size: 26px; font-weight: 800; color: var(--brand-700); line-height: 1.2; letter-spacing: -.02em; }
  .ordered-item .o-title { font-size: 17px; font-weight: 600; }
  .ordered-item .o-text { font-size: 14.5px; color: var(--muted); margin-top: 6px; line-height: 1.8; }

  /* ---------- 相关分类卡 ---------- */
  .cat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
    gap: 20px;
  }
  .cat-card {
    display: block;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius-card);
    padding: 22px 20px;
    box-shadow: var(--shadow-1);
    transition: transform .2s var(--ease), box-shadow .24s var(--ease), border-color .2s var(--ease);
  }
  .cat-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-2); border-color: rgba(47, 107, 87, .35); }
  .cat-card .c-title { font-size: 17px; font-weight: 600; color: var(--ink); transition: color .2s var(--ease); }
  .cat-card:hover .c-title { color: var(--brand-700); }
  .cat-card .c-text { margin-top: 8px; font-size: 13.5px; color: var(--muted); line-height: 1.75; }
  .cat-card .c-foot { margin-top: 16px; display: flex; align-items: center; gap: 6px; font-size: 13.5px; color: var(--brand-700); font-weight: 600; }
  .cat-card .c-foot svg { transition: transform .22s var(--ease); }
  .cat-card:hover .c-foot svg { transform: translateX(4px); }

  /* ---------- FAQ ---------- */
  .faq-list { display: flex; flex-direction: column; gap: 14px; max-width: 880px; }
  .faq-item {
    background: var(--surface);
    border: 1px solid var(--line);
    border-left: 3px solid transparent;
    border-radius: var(--radius-card);
    transition: border-color .22s var(--ease), box-shadow .22s var(--ease);
  }
  .faq-item[open] { border-left-color: var(--brand-700); box-shadow: var(--shadow-1); }
  .faq-item summary {
    display: flex; align-items: center; justify-content: space-between;
    gap: 16px;
    padding: 18px 22px;
    cursor: pointer;
    font-size: 16.5px;
    font-weight: 600;
    color: var(--ink);
    list-style: none;
    transition: color .2s var(--ease);
  }
  .faq-item summary::-webkit-details-marker { display: none; }
  .faq-item summary:hover { color: var(--brand-700); }
  .faq-item[open] summary { color: var(--brand-700); }
  .faq-icon {
    position: relative;
    width: 16px; height: 16px;
    flex: none;
    transition: transform .24s var(--ease);
  }
  .faq-icon::before, .faq-icon::after {
    content: "";
    position: absolute;
    left: 50%; top: 50%;
    background: currentColor;
    border-radius: 2px;
    transform: translate(-50%, -50%);
    transition: transform .24s var(--ease), opacity .24s var(--ease);
  }
  .faq-icon::before { width: 14px; height: 2px; }
  .faq-icon::after { width: 2px; height: 14px; }
  .faq-item[open] .faq-icon { transform: rotate(180deg); }
  .faq-item[open] .faq-icon::after { transform: translate(-50%, -50%) rotate(90deg); opacity: 0; }
  .faq-body { padding: 0 22px 20px; font-size: 15px; color: var(--muted); line-height: 1.85; }
  .faq-body p + p { margin-top: 10px; }

  /* ---------- 底部 CTA ---------- */
  .cta-band { background: var(--brand-900); color: #fff; padding: 84px 0; position: relative; overflow: hidden; }
  .cta-band__bg {
    position: absolute; inset: 0;
    background-image: url("/assets/images/backpic/back-3.png");
    background-size: cover;
    background-position: center;
    opacity: .1;
  }
  .cta-band__inner { position: relative; display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); gap: 40px; align-items: center; }
  .cta-band h2 { color: #fff; margin-top: 16px; }
  .cta-band p { margin-top: 14px; color: rgba(215, 225, 219, .82); font-size: 15.5px; max-width: 560px; }
  .cta-actions { display: flex; flex-wrap: wrap; gap: 14px; }
  .cta-band .btn-outline { border-color: rgba(255, 255, 255, .5); color: #fff; }
  .cta-band .btn-outline:hover { background: #fff; color: var(--brand-900); border-color: #fff; }
  .cta-band .rule-line { background: var(--ember-500); }

  /* ---------- 页脚 ---------- */
  .site-footer { background: var(--brand-900); color: rgba(215, 225, 219, .86); padding: 68px 0 26px; }
  .footer-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1fr 1.4fr;
    gap: 32px;
  }
  .footer-col + .footer-col { border-left: 1px solid rgba(255, 255, 255, .08); padding-left: 32px; }
  .footer-mark { width: 40px; height: 3px; background: var(--moss-300); border-radius: 2px; margin-bottom: 16px; }
  .footer-brand-main { font-size: 19px; font-weight: 800; color: #fff; line-height: 1.1; letter-spacing: -.02em; }
  .footer-brand-sub { font-size: 11.8px; letter-spacing: .14em; color: rgba(215, 225, 219, .62); margin-top: 3px; }
  .footer-desc { margin-top: 16px; font-size: 14px; line-height: 1.85; color: rgba(215, 225, 219, .72); max-width: 320px; }
  .footer-title { font-size: 14px; font-weight: 700; color: #fff; margin-bottom: 16px; letter-spacing: .02em; }
  .footer-link {
    display: block;
    font-size: 14px;
    color: rgba(215, 225, 219, .78);
    padding: 6px 0;
    transition: color .2s var(--ease), padding-left .2s var(--ease);
  }
  .footer-link:hover { color: #fff; padding-left: 4px; }
  .footer-bottom {
    margin-top: 48px;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, .08);
    display: flex; flex-wrap: wrap; gap: 10px;
    justify-content: space-between;
    font-size: 13px;
    color: rgba(215, 225, 219, .58);
  }

  /* ---------- 移动底栏 ---------- */
  .mobile-bar {
    position: fixed;
    left: 0; right: 0; bottom: 0;
    height: 60px;
    display: none;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    padding: 0 18px;
    background: var(--brand-900);
    border-top: 1px solid rgba(255, 255, 255, .08);
    z-index: 70;
    opacity: 0;
    transform: translateY(10px);
    pointer-events: none;
    transition: opacity .28s var(--ease), transform .28s var(--ease);
  }
  .mobile-bar.is-visible { opacity: 1; transform: none; pointer-events: auto; }
  .mobile-bar-text { color: rgba(215, 225, 219, .86); font-size: 13.5px; line-height: 1.4; }

  /* ---------- 入场动效 ---------- */
  .reveal { opacity: 0; transform: translateY(12px); transition: opacity .32s var(--ease), transform .32s var(--ease); }
  .reveal.is-in { opacity: 1; transform: none; }

  /* ---------- 响应式 ---------- */
  @media (max-width: 1279px) {
    h1 { font-size: 40px; }
    h2 { font-size: 30px; }
  }
  @media (max-width: 1023px) {
    .container { padding: 0 24px; }
    .nav-menu, .nav-divider { display: none; }
    .burger { display: inline-flex; }
    .nav-inner { height: 56px; }
    .icon-btn { display: none; }
    .section { padding: 72px 0; }
    .split { grid-template-columns: minmax(0, 1fr); gap: 32px; }
    .sticky-panel { position: static; }
    .page-hero { padding: calc(56px + 44px) 0 48px; }
    .cta-band__inner { grid-template-columns: minmax(0, 1fr); gap: 28px; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
    .footer-col + .footer-col { border-left: 0; padding-left: 0; }
    body { padding-bottom: 72px; }
    .mobile-bar { display: flex; }
    .zig { grid-template-columns: minmax(0, 1fr); gap: 20px; }
    .zig.reverse .zig-media { order: 0; }
  }
  @media (max-width: 767px) {
    h1 { font-size: 32px; }
    h2 { font-size: 26px; }
    h3 { font-size: 19px; }
    .page-hero h1 { font-size: 28px; }
    .page-hero__lead { font-size: 15.5px; }
    .section { padding: 56px 0; }
    .section-head { margin-bottom: 28px; }
    .cat-grid { grid-template-columns: minmax(0, 1fr); }
    .ordered-item { grid-template-columns: 44px minmax(0, 1fr); gap: 12px; }
    .ordered-item .o-num { font-size: 22px; }
  }
  @media (max-width: 519px) {
    .container { padding: 0 18px; }
    .nav-cta { padding: 0 14px; font-size: 14px; }
    .btn { width: 100%; }
    .cta-actions { flex-direction: column; }
    .footer-bottom { flex-direction: column; }
    .footer-grid { grid-template-columns: 1fr; }
  }
  @media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .reveal { transform: none !important; transition: opacity .3s linear; }
    .card:hover, .cat-card:hover, .zig:hover .zig-media img { transform: none !important; }
    .btn-primary:hover, .nav-cta:hover { transform: none !important; }
  }

/* roulang page: category2 */
:root{
  --brand-900:#101A17;
  --brand-700:#1B4D3E;
  --brand-500:#2F6B57;
  --ember-500:#D9542B;
  --ember-600:#C4461F;
  --moss-300:#7FA88F;
  --sand-50:#F6F3ED;
  --surface:#FFFFFF;
  --line:#E3DED4;
  --ink:#1C2321;
  --muted:#5D6B65;
  --font-sans:"Inter","Helvetica Neue",Arial,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  --radius-card:14px;
  --radius-img:12px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(16,26,23,.05), 0 10px 28px -18px rgba(16,26,23,.18);
  --shadow-2:0 2px 6px rgba(16,26,23,.07), 0 20px 44px -20px rgba(16,26,23,.24);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--sand-50);
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
body.no-scroll{overflow:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease)}
button{font:inherit;color:inherit;background:none;border:none;cursor:pointer}
h1,h2,h3,h4{margin:0;letter-spacing:-.015em;font-weight:700}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand-700);outline-offset:2px;border-radius:4px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}

/* ============ 导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  height:64px;
  display:flex;align-items:center;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease),backdrop-filter .24s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(246,243,237,.86);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom-color:var(--line);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:100%}
.nav-left{display:flex;align-items:center;gap:26px;min-width:0}
.logo{display:flex;flex-direction:column;line-height:1.06;letter-spacing:-.02em;flex:none}
.logo-main{font-size:18px;font-weight:800;color:var(--brand-900)}
.logo-sub{font-size:11.2px;font-weight:600;color:var(--muted);margin-top:1px}
.nav-menu{display:flex;align-items:center;gap:22px}
.nav-link{position:relative;font-size:14.5px;color:var(--ink);padding:6px 0;white-space:nowrap;transition:color .2s var(--ease)}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--brand-700);
  transform:scaleX(0);transform-origin:left;transition:transform .22s var(--ease);
}
.nav-link:hover{color:var(--brand-700)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--brand-700)}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-divider{width:1px;height:24px;background:var(--line);flex:none}
.nav-right{display:flex;align-items:center;gap:14px;flex:none}
.icon-btn{
  width:36px;height:36px;border-radius:999px;border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;color:var(--ink);
  background:rgba(255,255,255,.6);transition:all .22s var(--ease);
}
.icon-btn:hover{color:var(--brand-700);border-color:var(--brand-500);background:#fff}
.nav-cta{
  display:inline-flex;align-items:center;justify-content:center;
  height:40px;padding:0 20px;border-radius:var(--radius-btn);
  background:var(--ember-500);color:#fff;font-size:15px;font-weight:600;
  transition:background .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.nav-cta:hover{background:var(--ember-600);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.nav-cta:active{transform:translateY(0)}
.burger{
  display:none;width:40px;height:40px;border-radius:var(--radius-btn);
  border:1px solid var(--line);align-items:center;justify-content:center;color:var(--ink);background:#fff;
}
.burger:hover{border-color:var(--brand-500);color:var(--brand-700)}

/* 抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(16,26,23,.42);opacity:0;visibility:hidden;
  transition:opacity .24s var(--ease),visibility .24s var(--ease);z-index:80;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;width:308px;max-width:86vw;z-index:90;
  background:var(--surface);border-left:1px solid var(--line);
  transform:translateX(102%);transition:transform .3s var(--ease);
  display:flex;flex-direction:column;padding:20px 22px 26px;
}
.nav-drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line)}
.drawer-close{font-size:26px;line-height:1;color:var(--muted);width:36px;height:36px;border-radius:999px;display:inline-flex;align-items:center;justify-content:center}
.drawer-close:hover{color:var(--brand-700);background:rgba(127,168,143,.14)}
.drawer-nav{display:flex;flex-direction:column;padding:14px 0 0}
.drawer-nav a{
  display:flex;align-items:center;height:48px;font-size:17px;font-weight:600;color:var(--ink);
  border-bottom:1px solid var(--line);transition:color .2s var(--ease),padding-left .2s var(--ease);
}
.drawer-nav a:hover,.drawer-nav a.is-active{color:var(--brand-700);padding-left:6px}
.drawer-cta{margin-top:auto}

/* ============ 通用组件 ============ */
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--radius-btn);
  background:var(--ember-500);color:#fff;font-size:16px;font-weight:600;
  transition:background .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.btn-primary:hover{background:var(--ember-600);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--radius-btn);
  border:1.5px solid var(--brand-700);color:var(--brand-700);font-size:16px;font-weight:600;
  transition:background .22s var(--ease),color .22s var(--ease),transform .22s var(--ease);
}
.btn-ghost:hover{background:var(--brand-700);color:#fff;transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.text-link{display:inline-flex;align-items:center;gap:6px;color:var(--brand-700);font-weight:600;font-size:15px}
.text-link span{transition:transform .22s var(--ease)}
.text-link:hover span{transform:translateX(4px)}
.text-link.light{color:#E7EFE9}
.text-link.light:hover{color:#fff}
.rule-ember{display:block;width:40px;height:3px;background:var(--ember-500);border-radius:2px;margin-bottom:18px}
.rule-moss{display:block;width:56px;height:3px;background:var(--moss-300);border-radius:2px;margin-bottom:20px}
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  background:rgba(127,168,143,.16);color:var(--brand-700);font-size:12.5px;font-weight:600;
}
.section{padding:104px 0}
.section.bg-surface{background:var(--surface)}
.section.bg-sand{background:var(--sand-50)}
.sec-head{max-width:720px;margin-bottom:48px}
.sec-head h2{font-size:34px;line-height:1.25;font-weight:700}
.sec-sub{font-size:15px;color:var(--muted);margin-top:12px;max-width:640px}

/* 入场动画 */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .32s var(--ease),transform .32s var(--ease)}
.reveal.is-visible{opacity:1;transform:none}

/* ============ 面包屑 + 首屏 ============ */
.page-hero{background:var(--sand-50);padding:calc(64px + 40px) 0 78px}
.breadcrumb{font-size:14px;color:var(--muted);display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--brand-700)}
.breadcrumb .sep{color:var(--line)}
.breadcrumb .current{color:var(--ink)}
.hero-split{display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:center;margin-top:34px}
.hero-text h1{font-size:clamp(30px,4.1vw,48px);line-height:1.18;font-weight:800;letter-spacing:-.015em}
.hero-lead{font-size:16.5px;color:var(--muted);margin-top:16px;max-width:520px;line-height:1.8}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-facts{display:flex;flex-wrap:wrap;gap:26px;margin-top:34px}
.hero-facts li{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--muted)}
.hero-facts svg{color:var(--brand-500);flex:none}
.hero-media{position:relative}
.hero-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-img);
  box-shadow:var(--shadow-1);outline:1px solid rgba(255,255,255,.06);outline-offset:-1px;
}

/* ============ 编号纵列 ============ */
.num-list{max-width:940px}
.num-item{
  display:grid;grid-template-columns:66px 1fr;gap:26px;
  padding:30px 0;border-top:1px solid var(--line);
  transition:background .24s var(--ease);
}
.num-list .num-item:last-child{border-bottom:1px solid var(--line)}
.num-item:nth-child(even){padding-left:34px}
.num-item:hover{background:rgba(127,168,143,.07)}
.num-index{font-size:40px;font-weight:800;line-height:1;color:var(--brand-700);opacity:.9;letter-spacing:-.02em}
.num-item h3{font-size:21px;line-height:1.4;font-weight:600;margin-bottom:10px}
.num-item p{font-size:15.5px;color:var(--muted);line-height:1.85;max-width:700px}
.num-item p + p{margin-top:6px}

/* ============ 图文区 ============ */
.split{display:grid;grid-template-columns:1fr 1.1fr;gap:56px;align-items:center}
.split-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius-img);
  box-shadow:var(--shadow-1);outline:1px solid rgba(255,255,255,.06);outline-offset:-1px;
}
.split-body h2{font-size:32px;line-height:1.25}
.split-body .lead{font-size:15.5px;color:var(--muted);margin-top:14px}
.steps{margin-top:28px;border-top:1px solid var(--line)}
.steps li{display:grid;grid-template-columns:78px 1fr;gap:18px;padding:20px 0;border-bottom:1px solid var(--line)}
.step-no{font-size:13px;font-weight:700;color:var(--brand-700);letter-spacing:.02em;padding-top:3px}
.steps h3{font-size:18px;font-weight:600;margin-bottom:6px}
.steps p{font-size:14.5px;color:var(--muted);line-height:1.8}
.split-body .text-link{margin-top:26px}

/* ============ 数据带 ============ */
.stats{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.stat{padding:32px 26px;border-left:1px solid var(--line)}
.stat:first-child{border-left:none;padding-left:0}
.stat-num{font-size:40px;font-weight:800;line-height:1.1;color:var(--brand-700);letter-spacing:-.02em;display:flex;align-items:baseline;gap:4px}
.stat-num em{font-size:16px;font-style:normal;font-weight:600;color:var(--brand-500)}
.stat-label{font-size:14px;color:var(--muted);margin-top:8px}

/* ============ 相关分类 ============ */
.rel-list{border-top:1px solid var(--line)}
.rel-item{
  display:flex;align-items:center;gap:22px;padding:22px 6px;border-bottom:1px solid var(--line);
  transition:background .22s var(--ease),padding-left .22s var(--ease);
}
.rel-item:hover{background:rgba(127,168,143,.08);padding-left:14px}
.rel-item:hover .rel-name{color:var(--brand-700)}
.rel-name{font-size:18px;font-weight:600;transition:color .22s var(--ease);flex:none;min-width:104px}
.rel-desc{font-size:14.5px;color:var(--muted);flex:1}
.rel-arrow{color:var(--moss-300);flex:none;transition:transform .22s var(--ease),color .22s var(--ease)}
.rel-item:hover .rel-arrow{transform:translateX(4px);color:var(--brand-700)}
.rel-item.is-current{background:rgba(127,168,143,.1)}
.rel-item.is-current .rel-name{color:var(--brand-700)}

/* ============ CTA 区 ============ */
.cta-band{background:var(--brand-900);color:#fff;padding:78px 0}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:48px;flex-wrap:wrap}
.cta-copy{max-width:620px}
.cta-copy h2{font-size:32px;line-height:1.3;color:#fff}
.cta-copy p{font-size:15.5px;color:rgba(215,225,219,.78);margin-top:14px}
.cta-action{display:flex;align-items:center;gap:26px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-footer{background:var(--brand-900);color:rgba(215,225,219,.78);padding:68px 0 30px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.35fr;gap:36px}
.footer-col{position:relative;padding-left:0}
.footer-col + .footer-col{padding-left:32px}
.footer-col + .footer-col::before{
  content:"";position:absolute;left:0;top:4px;bottom:4px;width:1px;background:rgba(255,255,255,.08);
}
.footer-mark{width:38px;height:3px;background:var(--moss-300);border-radius:2px;margin-bottom:18px}
.footer-brand-main{font-size:19px;font-weight:800;color:#fff;letter-spacing:-.02em;line-height:1.1}
.footer-brand-sub{font-size:11.8px;font-weight:600;color:rgba(215,225,219,.6);letter-spacing:-.02em;margin-top:2px}
.footer-desc{font-size:14px;line-height:1.85;margin-top:16px;color:rgba(215,225,219,.72)}
.footer-title{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px}
.footer-link{display:block;font-size:14px;line-height:2.15;color:rgba(215,225,219,.78)}
.footer-link:hover{color:#fff}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(215,225,219,.6);
}

/* ============ 移动底部转化条 ============ */
.mobile-bar{
  position:fixed;left:0;right:0;bottom:0;height:60px;z-index:70;
  background:#fff;border-top:1px solid var(--line);
  display:none;align-items:center;justify-content:space-between;gap:14px;
  padding:0 18px;opacity:0;transform:translateY(100%);
  transition:opacity .28s var(--ease),transform .28s var(--ease);
}
.mobile-bar.is-visible{opacity:1;transform:translateY(0)}
.mobile-bar p{font-size:13.5px;color:var(--muted)}
.mobile-bar .btn-primary{height:42px;padding:0 20px;font-size:15px}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .nav-menu{gap:18px}
  .nav-link{font-size:14px}
}
@media (max-width:1023px){
  body{padding-bottom:72px}
  .nav-menu,.nav-divider{display:none}
  .burger{display:inline-flex}
  .icon-btn{display:none}
  .nav-cta{display:none}
  .site-header{height:56px}
  .section{padding:72px 0}
  .page-hero{padding:calc(56px + 34px) 0 62px}
  .hero-split{grid-template-columns:1fr;gap:34px}
  .hero-media img{aspect-ratio:16/9}
  .split{grid-template-columns:1fr;gap:34px}
  .split-media{order:-1}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .footer-col + .footer-col{padding-left:0}
  .footer-col + .footer-col::before{display:none}
  .stats{grid-template-columns:1fr 1fr}
  .stat{padding:26px 20px}
  .stat:nth-child(3){border-left:none;padding-left:0}
  .stat:nth-child(3),.stat:nth-child(4){border-top:1px solid var(--line)}
  .mobile-bar{display:flex}
  .cta-band{padding:62px 0}
}
@media (max-width:639px){
  .container{padding:0 18px}
  .section{padding:56px 0}
  .sec-head{margin-bottom:34px}
  .sec-head h2{font-size:26px}
  .split-body h2{font-size:25px}
  .cta-copy h2{font-size:25px}
  .hero-text h1{font-size:29px}
  .hero-facts{gap:14px 20px}
  .num-item{grid-template-columns:48px 1fr;gap:16px;padding:24px 0}
  .num-item:nth-child(even){padding-left:0}
  .num-index{font-size:30px}
  .num-item h3{font-size:18.5px}
  .steps li{grid-template-columns:1fr;gap:6px}
  .stat-num{font-size:32px}
  .rel-item{flex-wrap:wrap;gap:6px 16px}
  .rel-name{font-size:16.5px}
  .rel-desc{flex-basis:100%}
  .hero-actions .btn-primary,.hero-actions .btn-ghost{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .cta-inner{gap:28px}
}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  .reveal{transform:none;transition:opacity .32s linear}
  .hero-media img,.btn-primary,.btn-ghost,.nav-cta,.rel-arrow,.text-link span{transition:none}
  .btn-primary:hover,.btn-ghost:hover,.nav-cta:hover{transform:none}
}

/* roulang page: category3 */
:root{
  --brand-900:#101A17;
  --brand-700:#1B4D3E;
  --brand-500:#2F6B57;
  --ember-500:#D9542B;
  --ember-600:#C4461F;
  --moss-300:#7FA88F;
  --sand-50:#F6F3ED;
  --surface:#FFFFFF;
  --line:#E3DED4;
  --ink:#1C2321;
  --muted:#5D6B65;
  --radius-card:14px;
  --radius-img:12px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(16,26,23,.05),0 10px 28px -18px rgba(16,26,23,.18);
  --shadow-2:0 2px 6px rgba(16,26,23,.07),0 20px 44px -20px rgba(16,26,23,.24);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body.site-body{
  margin:0;
  font-family:"Inter","Helvetica Neue",Arial,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--sand-50);
  letter-spacing:0;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
summary{list-style:none}
summary::-webkit-details-marker{display:none}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid var(--brand-700);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  height:64px;
  background:rgba(246,243,237,0);
  border-bottom:1px solid transparent;
  transition:background .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(246,243,237,.86);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom-color:var(--line);
  box-shadow:0 1px 2px rgba(16,26,23,.04);
}
.nav-inner{display:flex;align-items:center;height:100%}
.nav-left{display:flex;align-items:center;gap:20px;flex:1 1 auto;min-width:0}
.nav-divider{flex:0 0 1px;height:22px;background:var(--line);margin:0 18px}
.nav-right{display:flex;align-items:center;gap:10px;flex:1 1 auto;justify-content:flex-end}
.logo{display:flex;flex-direction:column;line-height:1.06;letter-spacing:-.02em;flex:0 0 auto}
.logo-main{font-size:17px;font-weight:800;color:var(--ink)}
.logo-sub{font-size:10.5px;font-weight:600;color:var(--muted);letter-spacing:.08em}
.nav-menu{display:flex;align-items:center;flex-wrap:nowrap;min-width:0}
.nav-link{
  position:relative;display:inline-block;padding:6px 8px;
  font-size:13.5px;font-weight:500;color:var(--ink);white-space:nowrap;
  transition:color .22s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:8px;right:8px;bottom:0;height:2px;
  background:var(--brand-700);transform:scaleX(0);transform-origin:left center;
  transition:transform .22s var(--ease);
}
.nav-link:hover{color:var(--brand-700)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--brand-700);font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}
.icon-btn{
  width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:var(--radius-btn);color:var(--brand-700);
  border:1px solid var(--line);background:rgba(255,255,255,.72);
  transition:background .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.icon-btn:hover{background:#fff;border-color:var(--brand-500);box-shadow:var(--shadow-1)}
.nav-cta{
  display:inline-flex;align-items:center;height:38px;padding:0 18px;
  border-radius:var(--radius-btn);background:var(--ember-500);color:#fff;
  font-size:14px;font-weight:600;letter-spacing:.01em;
  transition:background .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.nav-cta:hover{background:var(--ember-600);transform:translateY(-1px);box-shadow:var(--shadow-1)}
.nav-cta:active{transform:translateY(0)}
.burger{
  display:none;width:40px;height:40px;align-items:center;justify-content:center;
  border-radius:var(--radius-btn);border:1px solid var(--line);color:var(--brand-700);
  background:rgba(255,255,255,.72);
  transition:background .22s var(--ease),border-color .22s var(--ease);
}
.burger:hover{border-color:var(--brand-500);background:#fff}

/* drawer */
.drawer-mask{
  position:fixed;inset:0;z-index:70;background:rgba(16,26,23,.44);
  opacity:0;visibility:hidden;transition:opacity .26s var(--ease),visibility .26s var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;z-index:80;height:100%;width:min(86vw,340px);
  background:var(--surface);padding:22px 22px 24px;
  transform:translateX(100%);transition:transform .3s var(--ease);
  display:flex;flex-direction:column;box-shadow:-24px 0 60px -30px rgba(16,26,23,.45);
}
.drawer.is-open{transform:translateX(0)}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-title{font-size:13px;font-weight:700;color:var(--muted);letter-spacing:.14em}
.drawer-close{
  width:36px;height:36px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:var(--radius-btn);border:1px solid var(--line);color:var(--brand-700);
}
.drawer-close:hover{border-color:var(--brand-500)}
.drawer-nav{display:flex;flex-direction:column}
.drawer-link{
  display:flex;align-items:center;height:48px;font-size:16px;font-weight:600;
  color:var(--ink);border-bottom:1px solid var(--line);transition:color .2s var(--ease);
}
.drawer-link:hover{color:var(--brand-700)}
.drawer-link.is-active{color:var(--brand-700)}
.drawer-foot{margin-top:auto;padding-top:20px}

/* ---------- buttons ---------- */
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--radius-btn);
  background:var(--ember-500);color:#fff;font-size:15px;font-weight:600;
  transition:background .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.btn-primary:hover{background:var(--ember-600);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--shadow-1)}
.btn-secondary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-btn);
  border:1.5px solid var(--brand-700);color:var(--brand-700);
  font-size:15px;font-weight:600;background:transparent;
  transition:background .22s var(--ease),color .22s var(--ease),transform .22s var(--ease);
}
.btn-secondary:hover{background:var(--brand-700);color:#fff;transform:translateY(-1px)}
.btn-secondary:active{transform:translateY(0)}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;
  color:var(--brand-700);transition:color .2s var(--ease);
}
.link-arrow svg{transition:transform .22s var(--ease)}
.link-arrow:hover{color:var(--brand-500)}
.link-arrow:hover svg{transform:translateX(4px)}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;
  background:rgba(127,168,143,.16);color:var(--brand-700);
  font-size:12.5px;font-weight:600;letter-spacing:.02em;
}

/* ---------- hero ---------- */
.page-hero{
  padding-top:136px;padding-bottom:76px;
  background:var(--surface);border-bottom:1px solid var(--line);
  position:relative;overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;right:-160px;top:-120px;width:420px;height:420px;
  border-radius:50%;background:rgba(127,168,143,.10);pointer-events:none;
}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--muted);margin-bottom:26px;position:relative;z-index:2}
.breadcrumb a{color:var(--muted);transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--brand-700)}
.breadcrumb .sep{color:#B9C2BC}
.breadcrumb .current{color:var(--ink);font-weight:600}
.page-hero-grid{
  display:grid;grid-template-columns:1.06fr 1fr;gap:52px;align-items:center;
  position:relative;z-index:2;
}
.eyebrow-rule{display:block;width:40px;height:3px;background:var(--ember-500);margin-bottom:20px}
.page-hero h1{
  font-size:clamp(30px,3.6vw,46px);line-height:1.18;font-weight:800;
  letter-spacing:-.015em;color:var(--ink);
}
.page-hero .lead{
  margin-top:16px;font-size:16.5px;line-height:1.85;color:var(--muted);max-width:34em;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-trust{display:flex;flex-wrap:wrap;gap:22px;margin-top:30px;font-size:13px;color:var(--muted)}
.hero-trust span{display:inline-flex;align-items:center;gap:7px}
.hero-trust i{width:7px;height:7px;border-radius:50%;background:var(--moss-300);display:inline-block}
.page-hero-media{position:relative}
.page-hero-media img{
  width:100%;height:340px;object-fit:cover;border-radius:var(--radius-img);
  outline:1px solid rgba(255,255,255,.06);outline-offset:-1px;
  box-shadow:var(--shadow-1);
}
.float-card{
  position:absolute;right:-8px;bottom:-26px;width:246px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:16px 18px;box-shadow:var(--shadow-2);
  animation:floaty 6s ease-in-out infinite;
}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-6px)}}
.float-card .fc-num{font-size:24px;font-weight:800;color:var(--brand-700);line-height:1.2;letter-spacing:-.01em}
.float-card .fc-text{font-size:12.5px;color:var(--muted);line-height:1.7;margin-top:2px}
.float-card .fc-line{height:1px;background:var(--line);margin:12px 0}

/* ---------- section ---------- */
.section{padding:96px 0}
.section-white{background:var(--surface)}
.section-sand{background:var(--sand-50)}
.section-head{max-width:760px;margin-bottom:44px}
.section-head h2{
  font-size:clamp(26px,2.6vw,34px);line-height:1.25;font-weight:700;
  letter-spacing:-.015em;color:var(--ink);
}
.section-head .sub{margin-top:12px;font-size:15px;color:var(--muted);line-height:1.8}
.section-head .moss-dot{display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--moss-300);margin-bottom:16px}
.head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}

/* ---------- timeline ---------- */
.timeline{position:relative;margin-top:6px;max-width:900px}
.timeline::before{
  content:"";position:absolute;left:19px;top:12px;bottom:30px;width:1px;background:var(--line);
}
.tl-item{position:relative;padding:0 0 38px 64px}
.tl-item:last-child{padding-bottom:0}
.tl-dot{
  position:absolute;left:8px;top:2px;width:24px;height:24px;border-radius:50%;
  background:var(--surface);border:2px solid var(--brand-700);color:var(--brand-700);
  display:flex;align-items:center;justify-content:center;
  font-size:11px;font-weight:800;line-height:1;
}
.section-white .tl-dot{background:var(--surface)}
.tl-title{font-size:20px;font-weight:600;line-height:1.4;color:var(--ink);letter-spacing:-.01em}
.tl-text{margin-top:8px;font-size:15px;color:var(--muted);line-height:1.85;max-width:60em}
.tl-meta{margin-top:10px;display:flex;flex-wrap:wrap;gap:10px}

/* ---------- asym cards ---------- */
.asym-grid{display:grid;grid-template-columns:7fr 5fr;gap:24px;align-items:stretch}
.asym-main{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:32px;display:flex;flex-direction:column;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.asym-main:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--moss-300)}
.asym-head{display:flex;align-items:center;gap:16px;margin-bottom:18px}
.asym-num{font-size:40px;font-weight:800;line-height:1;color:var(--brand-700);opacity:.9;letter-spacing:-.02em}
.asym-rule{width:2px;height:44px;background:var(--moss-300);display:inline-block}
.asym-title{font-size:21px;font-weight:600;line-height:1.4;color:var(--ink)}
.asym-text{margin-top:10px;font-size:15px;color:var(--muted);line-height:1.85}
.asym-side{display:flex;flex-direction:column;gap:24px}
.asym-strip{
  flex:1;display:flex;gap:18px;align-items:flex-start;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.asym-strip:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--moss-300)}
.asym-strip .strip-idx{font-size:15px;font-weight:800;color:var(--brand-700);line-height:1.6;flex:0 0 auto}
.asym-strip h3{font-size:17.5px;font-weight:600;line-height:1.45;color:var(--ink)}
.asym-strip p{margin-top:6px;font-size:14px;color:var(--muted);line-height:1.8}
.dot-list{margin-top:16px;display:flex;flex-direction:column;gap:8px}
.dot-list li{position:relative;padding-left:18px;font-size:14.5px;color:var(--muted);line-height:1.8}
.dot-list li::before{
  content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;border-radius:50%;
  background:var(--moss-300);
}
.asym-main .link-arrow{margin-top:auto;padding-top:22px}

/* ---------- related categories ---------- */
.rel-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.rel-col{display:flex;flex-direction:column;gap:24px}
.rel-col.second{margin-top:40px}
.cat-card{
  display:flex;gap:18px;align-items:flex-start;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.cat-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--moss-300)}
.cat-card:hover h3{color:var(--brand-700)}
.cat-thumb{
  flex:0 0 auto;width:92px;height:70px;border-radius:10px;overflow:hidden;
  outline:1px solid rgba(16,26,23,.06);outline-offset:-1px;
}
.cat-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.cat-card:hover .cat-thumb img{transform:scale(1.03)}
.cat-card h3{font-size:17.5px;font-weight:600;line-height:1.4;color:var(--ink);transition:color .22s var(--ease)}
.cat-card p{margin-top:6px;font-size:14px;color:var(--muted);line-height:1.8}
.cat-card .cat-foot{margin-top:12px}
.cat-card.is-current{border-color:var(--brand-700);background:linear-gradient(180deg,rgba(127,168,143,.09),rgba(255,255,255,0))}

/* ---------- faq ---------- */
.faq-list{max-width:900px}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  margin-bottom:14px;overflow:hidden;
  transition:box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.faq-item[open]{border-color:var(--moss-300);box-shadow:inset 3px 0 0 var(--brand-700),var(--shadow-1)}
.faq-q{
  cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 22px;font-size:17px;font-weight:600;color:var(--ink);line-height:1.5;
  transition:color .22s var(--ease);
}
.faq-item[open] .faq-q{color:var(--brand-700)}
.faq-q:hover{color:var(--brand-700)}
.faq-icon{
  position:relative;flex:0 0 auto;width:22px;height:22px;
  transition:transform .24s var(--ease);
}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--brand-700);border-radius:2px}
.faq-icon::before{left:0;right:0;top:50%;height:2px;margin-top:-1px}
.faq-icon::after{top:0;bottom:0;left:50%;width:2px;margin-left:-1px;transition:transform .24s var(--ease)}
.faq-item[open] .faq-icon{transform:rotate(180deg)}
.faq-item[open] .faq-icon::after{transform:scaleY(0)}
.faq-a{padding:0 22px 22px;font-size:15px;color:var(--muted);line-height:1.85}
.faq-a strong{color:var(--ink);font-weight:600}

/* ---------- cta band ---------- */
.cta-band{
  background:var(--brand-900);color:#fff;padding:84px 0;position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-120px;bottom:-160px;width:380px;height:380px;border-radius:50%;
  background:rgba(127,168,143,.10);pointer-events:none;
}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap}
.cta-band h2{font-size:clamp(24px,2.4vw,32px);font-weight:700;line-height:1.3;letter-spacing:-.015em;color:#fff}
.cta-band p{margin-top:12px;font-size:15px;color:rgba(220,230,224,.78);line-height:1.8;max-width:46em}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}
.cta-band .btn-secondary{border-color:rgba(255,255,255,.42);color:#fff}
.cta-band .btn-secondary:hover{background:#fff;color:var(--brand-900);border-color:#fff}

/* ---------- footer ---------- */
.site-footer{background:var(--brand-900);color:#E8EDE9;padding:72px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.5fr}
.footer-col{padding:0 26px}
.footer-col:first-child{padding-left:0}
.footer-col:last-child{padding-right:0}
.footer-col+.footer-col{border-left:1px solid rgba(255,255,255,.08)}
.footer-mark{width:36px;height:3px;background:var(--moss-300);margin-bottom:16px}
.footer-brand-main{font-size:19px;font-weight:800;letter-spacing:-.02em;color:#fff;line-height:1.2}
.footer-brand-sub{font-size:12px;font-weight:600;letter-spacing:.08em;color:rgba(215,225,219,.72);margin-bottom:14px}
.footer-desc{font-size:14px;color:rgba(215,225,219,.78);line-height:1.9;margin:0}
.footer-title{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px}
.footer-link{display:block;font-size:14px;color:rgba(215,225,219,.78);padding:5px 0;transition:color .2s var(--ease)}
.footer-link:hover{color:#fff}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13px;color:rgba(215,225,219,.6);
}

/* ---------- mobile bar ---------- */
.mobile-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:55;height:60px;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:0 18px;background:var(--brand-900);
  opacity:0;transform:translateY(100%);
  transition:opacity .28s var(--ease),transform .28s var(--ease);
}
.mobile-bar.is-visible{opacity:1;transform:translateY(0)}
.mobile-bar-text{font-size:13.5px;color:rgba(233,240,236,.86);line-height:1.4}
.mobile-bar .btn-primary{height:40px;padding:0 18px;font-size:14px}

/* ---------- reveal ---------- */
.reveal{
  opacity:0;transform:translateY(12px);
  transition:opacity .32s var(--ease),transform .32s var(--ease);
}
.reveal.is-in{opacity:1;transform:translateY(0)}

/* ---------- responsive ---------- */
@media (max-width:1100px){
  .nav-menu{display:none}
  .nav-divider{display:none}
  .burger{display:inline-flex}
  .icon-btn,.nav-cta{display:none}
  .nav-left{justify-content:space-between}
  .nav-right{flex:0 0 auto}
}
@media (max-width:1023px){
  .container{padding:0 24px}
  .section{padding:72px 0}
  .page-hero{padding-top:112px;padding-bottom:56px}
  .page-hero-grid{grid-template-columns:1fr;gap:36px}
  .page-hero-media img{height:280px}
  .float-card{position:static;width:100%;margin-top:14px;animation:none}
  .asym-grid{grid-template-columns:1fr}
  .rel-grid{grid-template-columns:1fr}
  .rel-col.second{margin-top:0}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-col{padding:0 20px 28px}
  .footer-col:nth-child(odd){padding-left:0;border-left:0}
  .footer-col:nth-child(even){border-left:1px solid rgba(255,255,255,.08);padding-right:0}
  .site-body{padding-bottom:72px}
}
@media (max-width:767px){
  .container{padding:0 22px}
  .page-hero h1{font-size:29px}
  .page-hero-media img{height:230px}
  .section{padding:64px 0}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .footer-grid{grid-template-columns:1fr}
  .footer-col,.footer-col:nth-child(even){border-left:0;padding:0 0 28px}
}
@media (max-width:519px){
  .container{padding:0 18px}
  .section{padding:56px 0}
  .page-hero{padding-top:96px}
  .site-header{height:56px}
  .page-hero h1{font-size:28px}
  .btn-primary,.btn-secondary{width:100%}
  .hero-actions{flex-direction:column}
  .cat-card{flex-direction:column}
  .cat-thumb{width:100%;height:150px}
  .asym-main{padding:24px}
}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  .reveal{transform:none;transition:opacity .2s linear;transition-delay:0ms !important}
  .float-card{animation:none}
  .mobile-bar{transition:opacity .2s linear}
  .cat-card:hover,.asym-main:hover,.asym-strip:hover,.btn-primary:hover,.btn-secondary:hover{transform:none}
  .cat-card:hover .cat-thumb img{transform:none}
}

/* roulang page: category4 */
:root{
  --brand-900:#101A17;
  --brand-700:#1B4D3E;
  --brand-500:#2F6B57;
  --ember-500:#D9542B;
  --ember-600:#C4461F;
  --moss-300:#7FA88F;
  --sand-50:#F6F3ED;
  --surface:#FFFFFF;
  --line:#E3DED4;
  --ink:#1C2321;
  --muted:#5D6B65;
  --radius-card:14px;
  --radius-img:12px;
  --radius-btn:10px;
  --shadow-rest:0 1px 2px rgba(16,26,23,.05), 0 10px 28px -18px rgba(16,26,23,.18);
  --shadow-hover:0 2px 6px rgba(16,26,23,.07), 0 20px 44px -20px rgba(16,26,23,.24);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--sand-50);
  color:var(--ink);
  font-family:"Inter","Helvetica Neue",Arial,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input{font:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0}
:focus-visible{outline:2px solid var(--brand-700);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:80;height:64px;background:rgba(246,243,237,.92);transition:background .24s ease,backdrop-filter .24s ease,border-color .24s ease;border-bottom:1px solid transparent}
.site-header.is-scrolled{background:rgba(246,243,237,.86);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav-inner{height:64px;display:flex;align-items:center;gap:22px}
.nav-left{display:flex;align-items:center;gap:26px;min-width:0}
.nav-right{display:flex;align-items:center;gap:10px;margin-left:auto}
.nav-divider{width:1px;height:26px;background:var(--line);flex:0 0 auto}
.logo{display:flex;flex-direction:column;line-height:1.06;letter-spacing:-.02em;flex:0 0 auto}
.logo-main{font-size:17px;font-weight:800;color:var(--ink)}
.logo-sub{font-size:10.5px;font-weight:600;color:var(--muted);letter-spacing:.02em}
.nav-menu{display:flex;align-items:center;gap:2px}
.nav-link{position:relative;padding:8px 10px;font-size:14px;color:var(--ink);border-radius:8px;transition:color .2s ease;white-space:nowrap}
.nav-link::after{content:"";position:absolute;left:10px;right:10px;bottom:2px;height:2px;background:var(--brand-700);transform:scaleX(0);transform-origin:left;transition:transform .22s var(--ease)}
.nav-link:hover{color:var(--brand-700)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--brand-700);font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}
.icon-btn{width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;border-radius:10px;color:var(--muted);transition:background .2s ease,color .2s ease}
.icon-btn:hover{background:rgba(27,77,62,.08);color:var(--brand-700)}
.nav-cta{display:inline-flex;align-items:center;height:40px;padding:0 20px;border-radius:var(--radius-btn);background:var(--ember-500);color:#fff;font-size:14px;font-weight:600;transition:background .2s ease,transform .2s ease,box-shadow .2s ease}
.nav-cta:hover{background:var(--ember-600);transform:translateY(-1px);box-shadow:var(--shadow-hover)}
.nav-cta:active{transform:none}
.burger{display:none;width:40px;height:40px;align-items:center;justify-content:center;border-radius:10px;color:var(--ink);transition:background .2s ease}
.burger:hover{background:rgba(27,77,62,.08)}

/* ---------- 抽屉 ---------- */
.drawer-mask{position:fixed;inset:0;background:rgba(16,26,23,.45);opacity:0;visibility:hidden;transition:opacity .28s ease,visibility .28s ease;z-index:90}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{position:fixed;top:0;right:0;bottom:0;width:min(84vw,340px);background:var(--surface);z-index:95;transform:translateX(102%);transition:transform .3s var(--ease);display:flex;flex-direction:column;padding:20px 22px 28px;box-shadow:-16px 0 40px -24px rgba(16,26,23,.4);overflow-y:auto}
.drawer.is-open{transform:none}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line)}
.drawer-close{width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;border-radius:10px;font-size:22px;line-height:1;color:var(--muted);transition:background .2s ease,color .2s ease}
.drawer-close:hover{background:rgba(27,77,62,.08);color:var(--brand-700)}
.drawer-menu{display:flex;flex-direction:column;margin:6px 0 22px}
.drawer-menu a{display:flex;align-items:center;height:48px;font-size:16px;color:var(--ink);border-bottom:1px solid var(--line);transition:color .2s ease}
.drawer-menu a:hover{color:var(--brand-700)}
.drawer-menu a.is-active{color:var(--brand-700);font-weight:700}
.drawer-cta{justify-content:center;margin-top:auto}
body.no-scroll{overflow:hidden}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 28px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;transition:background .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.btn-primary{background:var(--ember-500);color:#fff}
.btn-primary:hover{background:var(--ember-600);transform:translateY(-1px);box-shadow:var(--shadow-hover)}
.btn-primary:active{transform:none}
.btn-ghost{background:transparent;color:var(--brand-700);border:1.5px solid var(--brand-700)}
.btn-ghost:hover{background:var(--brand-700);color:#fff}
.btn-sm{height:40px;padding:0 20px;font-size:14px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-700);transition:color .2s ease}
.link-arrow svg{transition:transform .2s var(--ease)}
.link-arrow:hover{color:var(--brand-500)}
.link-arrow:hover svg{transform:translateX(4px)}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0}
.section--white{background:var(--surface)}
.section--sand{background:var(--sand-50)}
.sec-head{max-width:760px;margin-bottom:42px}
.rule-ember{width:40px;height:3px;background:var(--ember-500);margin-bottom:18px}
.rule-moss{width:40px;height:3px;background:var(--moss-300);margin-bottom:20px}
.sec-title{font-size:clamp(24px,3vw,34px);font-weight:700;letter-spacing:-.015em;line-height:1.28;color:var(--ink)}
.sec-sub{font-size:15px;color:var(--muted);margin-top:10px;line-height:1.8}
.badge{display:inline-flex;align-items:center;padding:4px 12px;border-radius:999px;background:rgba(127,168,143,.16);color:var(--brand-700);font-size:12.5px;font-weight:600;letter-spacing:.01em}

/* ---------- 首屏 ---------- */
.page-hero{padding:44px 0 72px;background:var(--sand-50)}
.hero-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:52px;align-items:center}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--muted);margin-bottom:22px}
.crumb a{transition:color .2s ease}
.crumb a:hover{color:var(--brand-700)}
.crumb .sep{color:var(--moss-300)}
.crumb .now{color:var(--ink)}
.page-hero h1{font-size:clamp(30px,4.4vw,48px);font-weight:800;line-height:1.2;letter-spacing:-.015em;color:var(--ink)}
.hero-lead{font-size:17px;color:var(--muted);line-height:1.8;margin-top:16px;max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.trust-row{display:flex;flex-wrap:wrap;gap:22px;margin-top:30px;font-size:13px;color:var(--muted)}
.trust-row span{display:inline-flex;align-items:center;gap:8px}
.trust-row i{display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--moss-300)}
.img-frame{position:relative;border-radius:var(--radius-img);overflow:hidden;background:var(--surface);box-shadow:var(--shadow-rest)}
.img-frame img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.img-frame::after{content:"";position:absolute;inset:0;border-radius:var(--radius-img);box-shadow:inset 0 0 0 1px rgba(255,255,255,.06);pointer-events:none}
.hero-media{aspect-ratio:16/11}
.hero-media:hover img{transform:scale(1.03)}

/* ---------- 对照面板 ---------- */
.compare-tabs{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:32px}
.compare-tab{padding:7px 16px;border-radius:999px;font-size:13px;font-weight:600;color:var(--brand-700);background:rgba(127,168,143,.16)}
.compare-tab.is-on{background:var(--brand-700);color:#fff}
.compare-grid{display:grid;grid-template-columns:1fr 1fr}
.compare-col{padding:0 44px}
.compare-col:first-child{padding-left:0}
.compare-col:last-child{padding-right:0;border-left:2px solid var(--line)}
.compare-col h3{font-size:21px;font-weight:600;letter-spacing:-.01em;color:var(--ink)}
.col-note{font-size:13px;color:var(--muted);margin-top:8px;margin-bottom:22px}
.check-list{list-style:none}
.check-list li{display:flex;gap:14px;padding:16px 0;border-top:1px solid var(--line);font-size:15px;line-height:1.8;color:var(--ink)}
.check-list li:first-child{border-top:0;padding-top:0}
.check-list .dot{flex:0 0 auto;width:8px;height:8px;border-radius:50%;background:var(--moss-300);margin-top:12px}
.compare-col:first-child .check-list .dot{background:var(--brand-700)}

/* ---------- 图文交错 ---------- */
.zig{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.zig + .zig{margin-top:80px}
.zig-media{aspect-ratio:16/10}
.zig-media:hover img{transform:scale(1.03)}
.zig.reverse .zig-media{order:2}
.step-no{display:inline-block;font-size:13px;font-weight:700;letter-spacing:.1em;color:var(--brand-700);margin-bottom:12px}
.zig h3{font-size:22px;font-weight:600;line-height:1.45;color:var(--ink);margin-bottom:14px}
.zig p{font-size:15.5px;color:var(--muted);line-height:1.85;margin-bottom:16px}

/* ---------- 数据带 ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-rest);overflow:hidden}
.stat{padding:34px 24px;border-left:1px solid var(--line)}
.stat:first-child{border-left:0}
.stat-num{font-size:40px;font-weight:800;line-height:1.1;letter-spacing:-.02em;color:var(--brand-700)}
.stat-num small{font-size:16px;font-weight:700;margin-left:4px}
.stat-label{font-size:14px;color:var(--muted);margin-top:10px;line-height:1.7}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;max-width:920px}
.faq-item{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;transition:border-color .24s ease}
.faq-item[open]{border-color:rgba(27,77,62,.35)}
.faq-item summary{position:relative;list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:20px 24px;font-size:16px;font-weight:600;color:var(--ink);transition:color .22s ease}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--brand-700);transform:scaleY(0);transform-origin:top;transition:transform .24s var(--ease)}
.faq-item[open] summary::before{transform:scaleY(1)}
.faq-item[open] summary{color:var(--brand-700)}
.faq-icon{position:relative;flex:0 0 auto;width:18px;height:18px;color:currentColor;transition:transform .24s var(--ease)}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:currentColor;border-radius:2px}
.faq-icon::before{left:0;right:0;top:8px;height:2px}
.faq-icon::after{top:0;bottom:0;left:8px;width:2px;transition:transform .24s var(--ease)}
.faq-item[open] .faq-icon{transform:rotate(180deg)}
.faq-item[open] .faq-icon::after{transform:scaleY(0)}
.faq-body{padding:0 24px 22px;font-size:15px;color:var(--muted);line-height:1.85}

/* ---------- 相关分类 ---------- */
.related-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.rel-card{display:flex;flex-direction:column;gap:10px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:24px;transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s ease}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(27,77,62,.3)}
.rel-card h3{font-size:18px;font-weight:600;color:var(--ink);transition:color .2s ease}
.rel-card:hover h3{color:var(--brand-700)}
.rel-card p{font-size:14px;color:var(--muted);line-height:1.75}
.rel-card .link-arrow{margin-top:auto}

/* ---------- 底部 CTA ---------- */
.cta-band{position:relative;overflow:hidden;background:var(--brand-900);color:#fff;padding:82px 0}
.cta-band .cta-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.png');background-size:cover;background-position:center;opacity:.2}
.cta-inner{position:relative;z-index:1;display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap}
.cta-band h2{font-size:clamp(24px,3vw,34px);font-weight:700;letter-spacing:-.015em;line-height:1.3}
.cta-band p{font-size:15.5px;color:rgba(231,238,234,.78);margin-top:12px;max-width:620px;line-height:1.8}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}
.btn-ghost-light{display:inline-flex;align-items:center;justify-content:center;height:48px;padding:0 28px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;color:#fff;border:1.5px solid rgba(255,255,255,.5);transition:background .2s ease,border-color .2s ease}
.btn-ghost-light:hover{background:rgba(255,255,255,.12);border-color:#fff}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-900);color:rgba(233,240,236,.82);padding:72px 0 28px;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.35fr;gap:40px;padding-bottom:40px}
.footer-col + .footer-col{border-left:1px solid rgba(255,255,255,.08);padding-left:40px}
.footer-mark{width:40px;height:3px;background:var(--moss-300);margin-bottom:18px}
.footer-brand-main{font-size:18px;font-weight:800;color:#fff;letter-spacing:-.02em;line-height:1.2}
.footer-brand-sub{font-size:11px;font-weight:600;color:rgba(215,225,219,.7);letter-spacing:.02em;margin-bottom:14px}
.footer-desc{font-size:14px;line-height:1.9;color:rgba(215,225,219,.78);max-width:340px}
.footer-title{font-size:13px;font-weight:700;color:#fff;margin-bottom:14px;letter-spacing:.04em}
.footer-link{display:block;font-size:14px;color:rgba(215,225,219,.78);padding:5px 0;transition:color .2s ease}
.footer-link:hover{color:#fff}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;border-top:1px solid rgba(255,255,255,.08);padding-top:22px;font-size:13px;color:rgba(215,225,219,.6)}

/* ---------- 移动端固定转化条 ---------- */
.mobile-bar{position:fixed;left:0;right:0;bottom:0;height:60px;display:none;align-items:center;justify-content:space-between;gap:12px;padding:0 18px;background:var(--brand-900);color:#fff;z-index:70;opacity:0;transform:translateY(10px);transition:opacity .3s ease,transform .3s ease}
.mobile-bar.is-show{opacity:1;transform:none}
.mobile-bar span{font-size:13px;color:rgba(231,238,234,.85);line-height:1.4}
.mobile-bar a{flex:0 0 auto;display:inline-flex;align-items:center;height:38px;padding:0 18px;border-radius:var(--radius-btn);background:var(--ember-500);color:#fff;font-size:14px;font-weight:600;transition:background .2s ease}
.mobile-bar a:hover{background:var(--ember-600)}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .32s var(--ease),transform .32s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  body{padding-bottom:72px}
  .container{padding:0 24px}
  .section{padding:72px 0}
  .site-header{height:56px}
  .nav-inner{height:56px}
  .nav-menu{display:none}
  .nav-divider{display:none}
  .burger{display:inline-flex}
  .nav-cta{height:38px;padding:0 16px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .page-hero{padding:32px 0 56px}
  .hero-media{aspect-ratio:16/9}
  .compare-grid{grid-template-columns:1fr;gap:0}
  .compare-col{padding:0}
  .compare-col:last-child{border-left:0;border-top:2px solid var(--line);padding-top:32px;margin-top:32px}
  .zig{grid-template-columns:1fr;gap:28px}
  .zig + .zig{margin-top:56px}
  .zig.reverse .zig-media{order:0}
  .related-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .footer-col + .footer-col{border-left:0;padding-left:0}
  .mobile-bar{display:flex}
}
@media (max-width:767px){
  .stats{grid-template-columns:repeat(2,1fr)}
  .stat{border-left:1px solid var(--line);border-top:1px solid var(--line);padding:26px 20px}
  .stat:nth-child(odd){border-left:0}
  .stat:nth-child(-n+2){border-top:0}
  .cta-band{padding:64px 0}
  .cta-inner{flex-direction:column;align-items:flex-start}
}
@media (max-width:639px){
  .container{padding:0 18px}
  .section{padding:56px 0}
  .page-hero{padding:26px 0 48px}
  .page-hero h1{font-size:28px}
  .hero-lead{font-size:15.5px}
  .hero-media{aspect-ratio:4/3}
  .related-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .btn{width:100%;padding:0 20px}
  .hero-actions{flex-direction:column;gap:12px}
  .faq-item summary{padding:16px 18px;font-size:15px}
  .faq-body{padding:0 18px 18px}
  .compare-col h3{font-size:19px}
}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category5 */
:root{
  --brand-900:#101A17;
  --brand-700:#1B4D3E;
  --brand-500:#2F6B57;
  --ember-500:#D9542B;
  --ember-600:#C4461F;
  --moss-300:#7FA88F;
  --sand-50:#F6F3ED;
  --surface:#FFFFFF;
  --line:#E3DED4;
  --ink:#1C2321;
  --muted:#5D6B65;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --sh-1:0 1px 2px rgba(16,26,23,.05), 0 10px 28px -18px rgba(16,26,23,.18);
  --sh-2:0 2px 6px rgba(16,26,23,.07), 0 20px 44px -20px rgba(16,26,23,.24);
  --nav-h:64px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:84px}
body{
  margin:0;
  background:var(--sand-50);
  color:var(--ink);
  font-family:'Inter','Helvetica Neue',Arial,'PingFang SC','HarmonyOS Sans SC','Microsoft YaHei','Source Han Sans SC',sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;letter-spacing:-.015em;color:var(--ink)}
p{margin:0}
ul,ol{margin:0;padding:0}
:focus-visible{outline:2px solid var(--brand-700);outline-offset:2px;border-radius:4px}

.container{max-width:1200px;margin:0 auto;padding:0 32px;width:100%}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background .24s ease, border-color .24s ease, box-shadow .24s ease;
}
.site-header.is-scrolled{
  background:rgba(246,243,237,.86);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom-color:var(--line);
  box-shadow:0 1px 0 rgba(16,26,23,.02);
}
.nav-inner{display:flex;align-items:center;height:var(--nav-h);gap:0}
.nav-left{display:flex;align-items:center;gap:30px;flex:1 1 auto;min-width:0}
.logo{display:flex;flex-direction:column;line-height:1.06;flex:0 0 auto}
.logo-main{font-size:18px;font-weight:800;color:var(--ink);letter-spacing:-.02em}
.logo-sub{font-size:11.2px;font-weight:600;color:var(--brand-700);letter-spacing:-.01em}
.nav-menu{display:flex;align-items:center;gap:22px;min-width:0}
.nav-link{
  position:relative;font-size:14.5px;color:var(--ink);padding:6px 0;
  transition:color .2s ease;white-space:nowrap;
}
.nav-link::after{
  content:'';position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--brand-700);transition:width .24s ease;
}
.nav-link:hover{color:var(--brand-700)}
.nav-link:hover::after{width:100%}
.nav-link.is-active{color:var(--brand-700);font-weight:600}
.nav-link.is-active::after{width:100%}
.nav-divider{width:1px;height:26px;background:var(--line);margin:0 22px;flex:0 0 auto}
.nav-right{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.icon-btn{
  width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:999px;background:transparent;color:var(--ink);
  cursor:pointer;transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.icon-btn:hover{background:#fff;border-color:var(--moss-300);color:var(--brand-700)}
.nav-cta{
  display:inline-flex;align-items:center;justify-content:center;
  height:38px;padding:0 18px;border-radius:var(--r-btn);
  background:var(--ember-500);color:#fff;font-size:14px;font-weight:600;
  transition:background .2s ease, transform .2s ease, box-shadow .2s ease;
}
.nav-cta:hover{background:var(--ember-600);transform:translateY(-1px);box-shadow:var(--sh-2)}
.nav-cta:active{transform:translateY(0)}
.burger{
  display:none;width:40px;height:40px;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:10px;background:transparent;color:var(--ink);cursor:pointer;
  transition:background .2s ease,color .2s ease;
}
.burger:hover{background:#fff;color:var(--brand-700)}

/* 移动抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(16,26,23,.42);z-index:90;
  opacity:0;visibility:hidden;transition:opacity .26s ease, visibility .26s ease;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:296px;max-width:86vw;z-index:95;
  background:var(--sand-50);border-left:1px solid var(--line);
  transform:translateX(102%);transition:transform .3s cubic-bezier(.22,.61,.36,1);
  display:flex;flex-direction:column;padding:20px 22px 26px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-close{
  width:38px;height:38px;border:1px solid var(--line);border-radius:10px;background:#fff;
  display:inline-flex;align-items:center;justify-content:center;cursor:pointer;color:var(--ink);
}
.drawer-close:hover{color:var(--brand-700);border-color:var(--moss-300)}
.drawer-nav{display:flex;flex-direction:column;border-top:1px solid var(--line)}
.drawer-link{
  height:48px;display:flex;align-items:center;font-size:16px;color:var(--ink);
  border-bottom:1px solid var(--line);transition:color .2s ease,padding-left .2s ease;
}
.drawer-link:hover,.drawer-link.is-active{color:var(--brand-700);padding-left:6px;font-weight:600}
.drawer-cta{margin-top:auto;margin-top:22px}

/* ---------- 通用按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:0;cursor:pointer;
  transition:background .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--ember-500);color:#fff}
.btn-primary:hover{background:var(--ember-600);transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-ghost{background:transparent;color:var(--brand-700);border:1.5px solid var(--brand-700)}
.btn-ghost:hover{background:var(--brand-700);color:#fff;transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.btn-outline-light{background:transparent;color:#EAF1EC;border:1.5px solid rgba(234,241,236,.5)}
.btn-outline-light:hover{background:rgba(255,255,255,.1);border-color:#EAF1EC;color:#fff}
.btn-sm{height:38px;padding:0 16px;font-size:14px}

.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--brand-700);
}
.link-arrow svg{transition:transform .24s ease}
.link-arrow:hover svg{transform:translateX(4px)}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;font-size:12.5px;font-weight:600;
  background:rgba(127,168,143,.16);color:var(--brand-700);
}
.pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 14px;border-radius:999px;font-size:12.5px;font-weight:600;
  background:rgba(127,168,143,.16);color:var(--brand-700);margin-bottom:18px;
}

/* ---------- 板块 ---------- */
.section{padding:96px 0}
.section-white{background:var(--surface)}
.section-sand{background:var(--sand-50)}
.sec-head{max-width:760px;margin-bottom:44px}
.sec-head .rule{display:block;width:40px;height:3px;border-radius:2px;background:var(--ember-500);margin-bottom:18px}
.sec-eyebrow{display:inline-block;font-size:13px;font-weight:600;color:var(--brand-700);letter-spacing:.08em;margin-bottom:8px}
.sec-head h2{font-size:34px;line-height:1.25;font-weight:700;margin-bottom:12px}
.sec-sub{font-size:15px;color:var(--muted)}

.img-frame{position:relative;border-radius:var(--r-img);overflow:hidden}
.img-frame::after{
  content:'';position:absolute;inset:0;border-radius:var(--r-img);
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.06);pointer-events:none;
}

/* ---------- 面包屑 ---------- */
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--muted);margin-bottom:24px;flex-wrap:wrap}
.breadcrumb a{color:var(--muted);transition:color .2s ease}
.breadcrumb a:hover{color:var(--brand-700)}
.breadcrumb .sep{color:var(--moss-300)}
.breadcrumb .crumb-current{color:var(--ink)}

/* ---------- 首屏 ---------- */
.page-hero{padding:56px 0 88px;background:var(--sand-50)}
.hero-grid{display:grid;grid-template-columns:minmax(0,55fr) minmax(0,45fr);gap:56px;align-items:center}
.hero-grid h1{font-size:46px;line-height:1.18;font-weight:800;margin-bottom:16px}
.hero-lead{font-size:18px;font-weight:600;color:var(--brand-700);margin-bottom:16px}
.hero-text{font-size:16px;color:var(--muted);max-width:560px;margin-bottom:28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px}
.hero-marks{display:flex;flex-wrap:wrap;gap:22px;font-size:13px;color:var(--muted)}
.hero-marks span{display:inline-flex;align-items:center;gap:7px}
.hero-marks i{width:7px;height:7px;border-radius:999px;background:var(--moss-300);display:inline-block}
.hero-media img{width:100%;height:380px;object-fit:cover}

/* ---------- FAQ ---------- */
.faq-wrap{display:grid;gap:12px}
.faq-item{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;transition:box-shadow .24s ease,border-color .24s ease;
}
.faq-item:hover{box-shadow:var(--sh-1)}
.faq-item[open]{box-shadow:inset 3px 0 0 var(--brand-700), var(--sh-1);border-color:#d9d2c6}
.faq-item summary{
  position:relative;list-style:none;cursor:pointer;
  padding:20px 60px 20px 24px;font-size:17px;font-weight:600;color:var(--ink);
  transition:color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand-700)}
.faq-item[open] summary{color:var(--brand-700)}
.faq-item summary::before,
.faq-item summary::after{
  content:'';position:absolute;right:28px;top:50%;background:var(--muted);
  transition:transform .24s ease, background .24s ease;
}
.faq-item summary::before{width:14px;height:2px;margin-top:-1px}
.faq-item summary::after{width:2px;height:14px;margin-top:-7px;right:34px}
.faq-item[open] summary::before,
.faq-item[open] summary::after{background:var(--brand-700)}
.faq-item[open] summary::after{transform:scaleY(0)}
.faq-body{padding:0 60px 22px 24px;font-size:15px;color:var(--muted)}

/* ---------- 卡片混排 ---------- */
.mix-grid{display:grid;gap:24px}
.feature-card{
  display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .24s ease, box-shadow .24s ease;
}
.feature-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.feature-media{min-height:300px}
.feature-media img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .4s ease}
.feature-card:hover .feature-media img{transform:scale(1.03)}
.feature-body{padding:32px 36px}
.feature-body h3{font-size:22px;font-weight:600;margin:14px 0 12px}
.feature-body p{font-size:15px;color:var(--muted)}
.tick-list{margin-top:18px;border-top:1px solid var(--line)}
.tick-list li{
  list-style:none;display:flex;gap:12px;align-items:flex-start;
  padding:12px 0;border-bottom:1px solid var(--line);font-size:14.5px;color:var(--ink);
}
.tick-list li::before{
  content:'';flex:0 0 auto;width:8px;height:8px;border-radius:999px;
  background:var(--brand-700);margin-top:9px;opacity:.9;
}
.feature-foot{margin-top:22px}

.mini-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.mini-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-1);
  transition:transform .24s ease, box-shadow .24s ease, border-color .24s ease;
}
.mini-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#d9d2c6}
.mini-index{font-size:22px;font-weight:800;color:var(--brand-700);opacity:.9;letter-spacing:-.01em}
.mini-card h3{font-size:19px;font-weight:600;margin:10px 0 8px;transition:color .2s ease}
.mini-card:hover h3{color:var(--brand-700)}
.mini-card p{font-size:14px;line-height:1.8;color:var(--muted)}
.mini-foot{margin-top:16px;display:inline-flex;align-items:center;gap:6px;font-size:13.5px;font-weight:600;color:var(--brand-700)}
.mini-foot svg{transition:transform .24s ease}
.mini-card:hover .mini-foot svg{transform:translateX(4px)}

/* ---------- 表单 ---------- */
.form-panel{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:32px;box-shadow:var(--sh-1);display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:28px;
}
.form-field{margin-bottom:20px}
.form-field:last-of-type{margin-bottom:0}
.form-label{display:block;font-size:13px;color:var(--muted);margin-bottom:12px}
.form-input,.form-textarea{
  width:100%;font-family:inherit;font-size:15px;color:var(--ink);
  background:#fff;border:1px solid var(--line);border-radius:var(--r-btn);
  padding:0 16px;height:48px;transition:border-color .2s ease, box-shadow .2s ease;
}
.form-textarea{height:168px;padding:14px 16px;line-height:1.7;resize:vertical}
.form-input::placeholder,.form-textarea::placeholder{color:#9AA69F}
.form-input:focus,.form-textarea:focus{
  outline:none;border-color:var(--brand-700);box-shadow:0 0 0 2px rgba(27,77,62,.14);
}
.form-hint{font-size:13px;color:var(--muted);margin-top:12px}
.form-actions{margin-top:20px;display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.form-note{font-size:13px;color:var(--muted)}
.form-output-head{font-size:13px;color:var(--muted);margin-bottom:12px;display:block}

/* ---------- 相关栏目 ---------- */
.channel-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:24px}
.channel-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);padding:22px;box-shadow:var(--sh-1);
  transition:transform .24s ease, box-shadow .24s ease, border-color .24s ease;
}
.channel-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#d9d2c6}
.channel-card h3{font-size:17px;font-weight:600;margin-bottom:10px;transition:color .2s ease}
.channel-card:hover h3{color:var(--brand-700)}
.channel-card p{font-size:13.5px;line-height:1.8;color:var(--muted)}
.channel-more{margin-top:16px;font-size:13px;font-weight:600;color:var(--brand-700)}
.channel-card.is-current{border-color:var(--brand-700);box-shadow:0 0 0 1px var(--brand-700), var(--sh-1)}
.channel-card.is-current .channel-more{color:var(--ember-500)}

/* ---------- 底部 CTA ---------- */
.cta-band{background:var(--brand-900);color:#EAF1EC;padding:84px 0;position:relative;overflow:hidden}
.cta-band::before{
  content:'';position:absolute;left:0;top:0;width:40px;height:3px;background:var(--ember-500);
  display:none;
}
.cta-inner{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);gap:40px;align-items:center}
.cta-inner h2{color:#fff;font-size:32px;line-height:1.3;font-weight:700;margin-bottom:14px}
.cta-inner p{color:rgba(215,225,219,.78);font-size:15px;max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-900);color:rgba(233,239,235,.86);padding:72px 0 28px;font-size:14px;border-top:1px solid rgba(255,255,255,.08)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:32px}
.footer-col + .footer-col{border-left:1px solid rgba(255,255,255,.08);padding-left:32px}
.footer-mark{width:40px;height:3px;border-radius:2px;background:var(--moss-300);margin-bottom:16px}
.footer-brand-main{font-size:18px;font-weight:800;color:#fff;letter-spacing:-.02em;line-height:1.1}
.footer-brand-sub{font-size:11.2px;font-weight:600;color:var(--moss-300);margin-bottom:14px}
.footer-desc{font-size:13.5px;line-height:1.9;color:rgba(215,225,219,.72);max-width:330px;margin:0}
.footer-title{font-size:14px;font-weight:700;color:#fff;margin-bottom:14px}
.footer-link{display:block;color:rgba(215,225,219,.78);padding:5px 0;font-size:14px;transition:color .2s ease}
.footer-link:hover{color:#fff}
.footer-bottom{
  margin-top:56px;padding-top:20px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13px;color:rgba(215,225,219,.6);
}

/* ---------- 移动端底部转化条 ---------- */
.mobile-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:70;height:60px;
  display:none;align-items:center;justify-content:space-between;gap:12px;
  padding:0 18px;background:#fff;border-top:1px solid var(--line);
  opacity:0;transform:translateY(100%);
  transition:opacity .3s ease, transform .3s ease;
}
.mobile-cta.is-visible{opacity:1;transform:translateY(0)}
.mcta-text{font-size:13.5px;color:var(--muted)}

/* ---------- 动效 ---------- */
.js .reveal{opacity:0;transform:translateY(12px);transition:opacity .32s cubic-bezier(.22,.61,.36,1), transform .32s cubic-bezier(.22,.61,.36,1)}
.js .reveal.is-in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .channel-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media (max-width:1023px){
  .container{padding:0 24px}
  .nav-menu{display:none}
  .nav-divider{display:none}
  .nav-cta{display:none}
  .icon-btn{display:none}
  .burger{display:inline-flex}
  .nav-inner{height:56px;justify-content:space-between}
  .nav-left{flex:0 1 auto;gap:0}
  .section{padding:72px 0}
  .page-hero{padding:40px 0 64px}
  .hero-grid{grid-template-columns:minmax(0,1fr);gap:36px}
  .hero-grid h1{font-size:36px}
  .hero-media img{height:280px}
  .sec-head h2{font-size:29px}
  .feature-card{grid-template-columns:minmax(0,1fr)}
  .feature-media{min-height:220px}
  .feature-media img{min-height:220px}
  .feature-body{padding:26px}
  .form-panel{grid-template-columns:minmax(0,1fr);padding:26px}
  .channel-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-inner{grid-template-columns:minmax(0,1fr);gap:26px}
  .cta-actions{justify-content:flex-start}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}
  .footer-col + .footer-col{border-left:0;padding-left:0}
  .footer-col{padding-top:26px;border-top:1px solid rgba(255,255,255,.08)}
  .footer-col:first-child{padding-top:0;border-top:0}
  .mobile-cta{display:flex}
  body{padding-bottom:72px}
}
@media (max-width:639px){
  .container{padding:0 18px}
  .section{padding:56px 0}
  .page-hero{padding:32px 0 52px}
  .hero-grid h1{font-size:29px}
  .hero-lead{font-size:16.5px}
  .hero-media img{height:240px}
  .sec-head h2{font-size:25px}
  .faq-item summary{padding:18px 54px 18px 18px;font-size:16px}
  .faq-body{padding:0 20px 20px 18px}
  .mini-grid{grid-template-columns:minmax(0,1fr)}
  .channel-grid{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .footer-bottom{flex-direction:column;gap:6px}
  .hero-actions .btn{width:100%}
  .cta-inner h2{font-size:25px}
  .btn{padding:0 22px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .js .reveal{transform:none;transition:opacity .32s ease}
  .feature-card:hover,.mini-card:hover,.channel-card:hover,.btn-primary:hover,.btn-ghost:hover{transform:none}
  .feature-card:hover .feature-media img{transform:none}
}