/* roulang page: index */
:root{
  --ink:#111C1A;
  --jade:#1F5C4A;
  --jade-dark:#174536;
  --copper:#D96C3B;
  --cream:#F6F3EC;
  --card:#FFFFFF;
  --sub:#EDE8DE;
  --line:rgba(17,28,26,.12);
  --muted:#66706C;
  --r-lg:24px;
  --r-md:18px;
  --r-sm:12px;
  --shadow-soft:0 20px 60px rgba(17,28,26,.08);
  --shadow-card:0 8px 24px rgba(17,28,26,.06);
  --font-mono:"IBM Plex Mono","Space Grotesk",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--cream);
  color:var(--ink);
  font-family:"Noto Sans SC","HarmonyOS Sans SC","PingFang SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p,figure{margin:0}
:focus-visible{outline:2px solid var(--copper);outline-offset:3px;border-radius:8px}
.container{width:100%;max-width:1240px;margin:0 auto;padding-left:24px;padding-right:24px}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(246,243,236,.88);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:76px}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:1.04rem;letter-spacing:-.01em;white-space:nowrap}
.brand-mark{display:grid;place-items:center;width:36px;height:36px;border-radius:12px;background:var(--ink);color:#fff;font-family:var(--font-mono);font-size:.83rem;letter-spacing:.02em;flex:0 0 auto}
.nav-desktop{display:flex;align-items:center;gap:2px}
.nav-link{position:relative;padding:9px 14px;border-radius:999px;font-size:.93rem;color:var(--muted);transition:color .25s,background .25s;white-space:nowrap}
.nav-link:hover{color:var(--ink);background:rgba(31,92,74,.08)}
.nav-link.active{color:var(--jade);font-weight:700}
.nav-link.active::after{content:"";position:absolute;left:14px;right:14px;bottom:3px;height:2px;border-radius:2px;background:var(--jade)}
.header-cta{flex:0 0 auto}
@media (max-width:1023px){
  .nav-desktop{display:none}
  .header-cta{display:none}
  .header-inner{min-height:64px}
}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:13px 26px;min-height:46px;border-radius:999px;border:1px solid transparent;font-size:.95rem;font-weight:700;cursor:pointer;transition:background .28s ease,color .28s ease,border-color .28s ease,transform .28s ease,box-shadow .28s ease}
.btn .arrow,.btn i.fa-arrow-right{transition:transform .28s ease}
.btn:hover .arrow,.btn:hover i.fa-arrow-right{transform:translateX(4px)}
.btn-primary{background:var(--jade);color:#fff;box-shadow:0 10px 26px rgba(31,92,74,.22)}
.btn-primary:hover{background:var(--jade-dark);transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{background:#fff;border-color:var(--jade);color:var(--jade)}
.btn-light{background:#fff;color:var(--ink)}
.btn-light:hover{background:var(--sub);transform:translateY(-1px)}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.35)}
.btn-outline-light:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.6)}
.link-copper{display:inline-flex;align-items:center;gap:8px;font-weight:700;color:var(--jade);border-bottom:2px solid transparent;padding-bottom:2px;transition:color .25s,border-color .25s}
.link-copper:hover{color:var(--copper);border-color:var(--copper)}

/* ---------- generic ---------- */
.section{padding:104px 0}
.section-white{background:#fff}
.section-sub{background:var(--sub)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;color:var(--jade);background:rgba(31,92,74,.09);border-radius:999px;padding:6px 14px}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--copper)}
.section-title{font-size:clamp(1.75rem,3.1vw,2.85rem);line-height:1.24;font-weight:800;letter-spacing:-.02em;margin-top:18px}
.section-lead{margin-top:16px;color:var(--muted);max-width:640px;font-size:1.02rem}
.tag{display:inline-flex;align-items:center;gap:6px;font-size:12px;letter-spacing:.06em;color:var(--jade);background:rgba(31,92,74,.09);border-radius:999px;padding:4px 12px;font-family:var(--font-mono)}
.tag-copper{color:#A74A22;background:rgba(217,108,59,.14)}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow-card);transition:transform .3s ease,border-color .3s ease,box-shadow .3s ease}
.card:hover{transform:translateY(-4px);border-color:var(--jade);box-shadow:var(--shadow-soft)}
.divider{height:1px;background:var(--line);border:0;margin:0}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;padding:76px 0 100px}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.16;filter:saturate(.75)}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(246,243,236,.40) 0%,rgba(246,243,236,.94) 68%,var(--cream) 100%)}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.06fr .94fr;gap:60px;align-items:center}
.hero h1{font-size:clamp(2.4rem,4.6vw,4.1rem);line-height:1.14;font-weight:800;letter-spacing:-.03em;margin-top:22px}
.hero-sub{margin-top:22px;font-size:1.04rem;color:var(--muted);max-width:600px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero-metrics{display:flex;flex-wrap:wrap;gap:12px 40px;margin-top:44px;padding-top:26px;border-top:1px solid var(--line)}
.hero-metrics .metric strong{display:block;font-family:var(--font-mono);font-size:1.6rem;font-weight:600;letter-spacing:-.01em;line-height:1.3}
.hero-metrics .metric span{font-size:.86rem;color:var(--muted)}
.hero-visual{position:relative}
.hero-visual > img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-lg);box-shadow:var(--shadow-soft)}
.hero-card{position:absolute;left:-20px;bottom:-26px;width:238px;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);padding:18px 20px;box-shadow:var(--shadow-soft)}
.hero-card .k{font-family:var(--font-mono);font-size:12px;letter-spacing:.1em;color:var(--copper)}
.hero-card .v{font-weight:800;font-size:1.06rem;margin-top:6px}
.hero-card .d{font-size:.84rem;color:var(--muted);margin-top:4px;line-height:1.6}
@media (max-width:1023px){
  .hero{padding:48px 0 72px}
  .hero-inner{grid-template-columns:1fr;gap:44px}
  .hero-visual{margin-top:8px}
  .hero-card{position:static;width:100%;margin-top:16px;left:auto;bottom:auto}
  .hero-metrics{gap:14px 28px}
  .hero-metrics .metric strong{font-size:1.35rem}
}

/* ---------- value ---------- */
.value-grid{display:grid;grid-template-columns:.86fr 1.14fr;gap:64px;align-items:start}
.value-head{position:sticky;top:104px}
.value-list li{display:flex;gap:22px;padding:26px 0;border-bottom:1px solid var(--line);transition:padding-left .3s ease}
.value-list li:first-child{border-top:1px solid var(--line)}
.value-list li:hover{padding-left:8px}
.value-list .num{font-family:var(--font-mono);font-size:.84rem;letter-spacing:.08em;color:var(--copper);min-width:36px;padding-top:5px}
.value-list h3{font-size:1.2rem;font-weight:700;letter-spacing:-.01em}
.value-list p{margin-top:8px;color:var(--muted);font-size:.96rem}
@media (max-width:1023px){
  .value-grid{grid-template-columns:1fr;gap:36px}
  .value-head{position:static}
}

/* ---------- features ---------- */
.tabs{display:inline-flex;flex-wrap:wrap;gap:6px;background:#fff;border:1px solid var(--line);border-radius:999px;padding:6px;margin-top:28px}
.tab-btn{padding:10px 20px;border-radius:999px;border:0;background:transparent;color:var(--muted);font-size:.9rem;font-weight:600;cursor:pointer;transition:background .25s,color .25s;min-height:40px}
.tab-btn:hover{color:var(--ink)}
.tab-btn.active{background:var(--ink);color:#fff}
.panel{display:none;grid-template-columns:1fr 1fr;gap:56px;align-items:center;margin-top:44px}
.panel.active{display:grid;animation:fadeUp .45s ease both}
@keyframes fadeUp{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}
.panel img{width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--r-lg);box-shadow:var(--shadow-card)}
.panel h3{font-size:clamp(1.35rem,2.2vw,1.85rem);font-weight:800;letter-spacing:-.02em;line-height:1.3}
.panel p{margin-top:16px;color:var(--muted)}
.feature-list{margin-top:24px;display:grid;gap:12px}
.feature-list li{display:flex;gap:12px;align-items:flex-start;font-size:.96rem}
.feature-list i{color:var(--jade);margin-top:6px;font-size:.8rem}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:24px}
@media (max-width:1023px){
  .panel{grid-template-columns:1fr;gap:28px}
  .panel img{order:-1}
}

/* ---------- scenarios ---------- */
.scroll-row{display:flex;gap:20px;overflow-x:auto;padding:6px 4px 24px;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch}
.scroll-row > *{flex:0 0 322px;scroll-snap-align:start}
.scroll-row::-webkit-scrollbar{height:6px}
.scroll-row::-webkit-scrollbar-thumb{background:rgba(17,28,26,.18);border-radius:99px}
.scene-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--shadow-card);transition:transform .3s ease,border-color .3s ease,box-shadow .3s ease;display:flex;flex-direction:column}
.scene-card:hover{transform:translateY(-4px);border-color:var(--jade);box-shadow:var(--shadow-soft)}
.scene-card img{width:100%;aspect-ratio:16/10;object-fit:cover}
.scene-card .body{padding:22px 24px 26px}
.scene-card h3{font-size:1.1rem;font-weight:700;margin-top:12px}
.scene-card p{margin-top:10px;font-size:.94rem;color:var(--muted)}

/* ---------- cases ---------- */
.case-grid{display:grid;grid-template-columns:1.35fr .65fr;gap:24px;align-items:stretch}
.case-main{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow-card)}
.case-main img{width:100%;height:280px;object-fit:cover}
.case-main .body{padding:30px 34px 34px}
.case-main h3{font-size:1.4rem;font-weight:800;letter-spacing:-.02em}
.case-main p{margin-top:12px;color:var(--muted);font-size:.96rem;max-width:560px}
.case-stats{display:flex;flex-wrap:wrap;gap:16px 40px;margin-top:26px;padding-top:22px;border-top:1px solid var(--line)}
.case-stats strong{display:block;font-family:var(--font-mono);font-size:1.55rem;font-weight:600;line-height:1.3}
.case-stats span{font-size:.84rem;color:var(--muted)}
.case-track{display:grid;gap:16px;align-content:start}
.case-mini{background:#fff;border:1px solid var(--line);border-radius:var(--r-md);padding:20px 22px;box-shadow:var(--shadow-card);transition:transform .3s ease,border-color .3s ease}
.case-mini:hover{transform:translateY(-4px);border-color:var(--jade)}
.case-mini .who{font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;color:var(--copper)}
.case-mini h4{font-size:1.02rem;font-weight:700;margin-top:8px}
.case-mini p{font-size:.9rem;color:var(--muted);margin-top:6px}
@media (max-width:1023px){
  .case-grid{grid-template-columns:1fr}
  .case-main img{height:220px}
}

/* ---------- pricing ---------- */
.price-grid{display:grid;grid-template-columns:.72fr 1.28fr;gap:56px;align-items:start}
.price-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.price-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:30px 26px;display:flex;flex-direction:column;box-shadow:var(--shadow-card);transition:transform .3s ease,border-color .3s ease,box-shadow .3s ease}
.price-card:hover{transform:translateY(-4px);border-color:var(--jade);box-shadow:var(--shadow-soft)}
.price-card.featured{background:var(--ink);color:#fff;border-color:var(--ink)}
.price-card.featured .price-desc,.price-card.featured .price-for{color:rgba(255,255,255,.72)}
.price-card.featured .price-list li{color:rgba(255,255,255,.86)}
.price-card.featured .price-list i{color:#7FD3B4}
.price-name{font-size:1.15rem;font-weight:800}
.price-desc{font-size:.9rem;color:var(--muted);margin-top:8px;min-height:48px}
.price-for{font-size:.86rem;color:var(--muted);margin-top:14px;padding-top:14px;border-top:1px solid var(--line)}
.price-card.featured .price-for{border-color:rgba(255,255,255,.18)}
.price-list{margin-top:16px;display:grid;gap:10px}
.price-list li{display:flex;gap:10px;align-items:flex-start;font-size:.92rem}
.price-list i{color:var(--jade);margin-top:6px;font-size:.75rem}
.price-card .btn{margin-top:24px;width:100%}
@media (max-width:1023px){
  .price-grid{grid-template-columns:1fr;gap:32px}
  .price-cards{grid-template-columns:1fr}
}

/* ---------- news ---------- */
.news-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-top:44px}
.news-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;box-shadow:var(--shadow-card);display:flex;flex-direction:column;transition:transform .3s ease,border-color .3s ease,box-shadow .3s ease}
.news-card:hover{transform:translateY(-4px);border-color:var(--jade);box-shadow:var(--shadow-soft)}
.news-thumb{display:block}
.news-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover}
.news-body{padding:20px 22px 24px;display:flex;flex-direction:column;flex:1}
.news-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.06em;color:var(--muted)}
.news-body h3{font-size:1.02rem;font-weight:700;line-height:1.6;margin-top:12px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-body h3 a:hover{color:var(--jade)}
.news-body p{margin-top:10px;font-size:.9rem;color:var(--muted);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.news-more{margin-top:auto;padding-top:16px;font-size:.86rem;font-weight:700;color:var(--jade);display:inline-flex;align-items:center;gap:7px}
.news-card:hover .news-more i{transform:translateX(4px)}
.news-more i{transition:transform .28s ease}
.empty-state{margin-top:40px;padding:40px 32px;border:1px dashed var(--line);border-radius:var(--r-md);background:#fff;color:var(--muted);text-align:center}
@media (max-width:1279px){.news-grid{grid-template-columns:repeat(3,1fr)}}
@media (max-width:1023px){.news-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:639px){.news-grid{grid-template-columns:1fr}}

/* ---------- faq ---------- */
.faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:0 56px;margin-top:40px}
.faq-item{border-bottom:1px solid var(--line);align-self:start}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:22px 0;background:none;border:0;text-align:left;font-size:1.02rem;font-weight:700;cursor:pointer;line-height:1.6}
.faq-q i{color:var(--jade);font-size:.85rem;transition:transform .32s ease;flex:0 0 auto}
.faq-item.open .faq-q i{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .38s ease}
.faq-a p{padding:0 40px 24px 0;color:var(--muted);font-size:.95rem}
@media (max-width:767px){.faq-grid{grid-template-columns:1fr;gap:0}}

/* ---------- cta ---------- */
.cta-band{background:var(--ink);color:#fff;border-radius:28px;padding:56px;display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center}
.cta-band h2{font-size:clamp(1.7rem,3vw,2.5rem);font-weight:800;letter-spacing:-.02em;line-height:1.26}
.cta-band p{margin-top:16px;color:rgba(255,255,255,.74);max-width:460px}
.cta-points{margin-top:26px;display:grid;gap:10px}
.cta-points li{display:flex;gap:10px;align-items:flex-start;font-size:.94rem;color:rgba(255,255,255,.84)}
.cta-points i{color:#7FD3B4;margin-top:6px;font-size:.75rem}
.form-card{background:#fff;border-radius:var(--r-lg);padding:30px 30px 32px;color:var(--ink)}
.field{margin-bottom:16px}
.field label{display:block;font-size:.85rem;font-weight:700;margin-bottom:7px}
.field input,.field select,.field textarea{width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:var(--r-sm);background:#FCFBF8;transition:border-color .25s,box-shadow .25s,background .25s}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--jade);box-shadow:0 0 0 3px rgba(31,92,74,.16);background:#fff}
.field textarea{resize:vertical;min-height:96px}
.check-row{display:flex;gap:10px;align-items:flex-start;font-size:.84rem;color:var(--muted);margin:4px 0 18px}
.check-row input{width:16px;height:16px;margin-top:5px;flex:0 0 auto;accent-color:var(--jade)}
.form-ok{display:none;margin-top:14px;padding:12px 16px;border-radius:var(--r-sm);background:rgba(31,92,74,.1);color:var(--jade);font-size:.9rem;font-weight:600}
.form-ok.show{display:block}
@media (max-width:1023px){
  .cta-band{grid-template-columns:1fr;gap:32px;padding:34px 24px;border-radius:22px}
}

/* ---------- footer ---------- */
.site-footer{background:#0E1715;color:rgba(255,255,255,.70);padding:76px 0 26px;margin-top:104px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:1.05rem}
.footer-brand .brand-mark{background:var(--jade)}
.footer-about{margin-top:18px;font-size:.92rem;line-height:1.8;max-width:320px}
.footer-col h4{color:#fff;font-size:.95rem;font-weight:700;margin-bottom:16px}
.footer-col a,.footer-col li{display:block;font-size:.92rem;padding:6px 0;transition:color .25s}
.footer-col a:hover{color:var(--copper)}
.footer-bottom{margin-top:52px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);display:flex;flex-wrap:wrap;gap:12px 24px;justify-content:space-between;font-size:.84rem;color:rgba(255,255,255,.55)}
.footer-bottom .mono{font-family:var(--font-mono);letter-spacing:.04em}
@media (max-width:1023px){.footer-grid{grid-template-columns:1fr 1fr;gap:32px}}
@media (max-width:639px){.footer-grid{grid-template-columns:1fr}.site-footer{padding-top:56px;margin-top:72px}}

/* ---------- mobile tabs ---------- */
.mobile-tabs{position:fixed;left:0;right:0;bottom:0;z-index:70;display:none;background:rgba(255,255,255,.97);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom)}
.mobile-tabs a{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;height:66px;font-size:.68rem;color:var(--muted);position:relative;transition:color .25s}
.mobile-tabs a i{font-size:1.02rem}
.mobile-tabs a.active{color:var(--jade);font-weight:700}
.mobile-tabs a.active::before{content:"";position:absolute;top:0;width:26px;height:3px;border-radius:0 0 3px 3px;background:var(--jade)}
@media (max-width:1023px){
  .mobile-tabs{display:flex}
  body{padding-bottom:84px}
}

/* ---------- motion ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .55s ease,transform .55s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: article */
:root{
  --ink:#111C1A;
  --brand:#1F5C4A;
  --brand-dark:#17453A;
  --accent:#D96C3B;
  --bg:#F6F3EC;
  --card:#FFFFFF;
  --sub:#EDE8DE;
  --line:rgba(17,28,26,.12);
  --muted:#66706C;
  --radius-lg:22px;
  --radius-md:14px;
  --shadow-soft:0 20px 60px rgba(17,28,26,.08);
  --font-sans:"Noto Sans SC","HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input,textarea,select{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px;}
.mono{font-family:var(--font-mono);letter-spacing:.04em;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(246,243,236,.94);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:76px;}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;letter-spacing:-.01em;font-size:17px;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;background:var(--ink);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  font-family:var(--font-mono);font-size:13px;font-weight:600;letter-spacing:.02em;
}
.brand-text{white-space:nowrap;}
.nav-desktop{display:flex;align-items:center;gap:4px;}
.nav-link{
  padding:9px 14px;border-radius:999px;font-size:14.5px;color:var(--muted);
  transition:background .25s ease,color .25s ease;white-space:nowrap;
}
.nav-link:hover{color:var(--ink);background:var(--sub);}
.nav-link.active{color:var(--brand);background:rgba(31,92,74,.09);font-weight:600;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;border:1px solid transparent;cursor:pointer;
  font-size:14.5px;font-weight:600;padding:12px 20px;min-height:44px;
  transition:background .25s ease,color .25s ease,border-color .25s ease,transform .25s ease,box-shadow .25s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 12px 30px rgba(31,92,74,.22);}
.btn-primary:hover{background:var(--brand-dark);}
.btn-primary .arrow{transition:transform .25s ease;}
.btn-primary:hover .arrow{transform:translateX(4px);}
.btn-ghost{border-color:var(--line);color:var(--ink);background:transparent;}
.btn-ghost:hover{background:var(--sub);border-color:rgba(17,28,26,.22);}
.header-cta{white-space:nowrap;}

/* ---------- breadcrumb & article head ---------- */
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:34px 0 0;font-size:13px;color:var(--muted);}
.crumbs a{color:var(--muted);transition:color .2s ease;}
.crumbs a:hover{color:var(--accent);text-decoration:underline;text-underline-offset:4px;}
.crumbs .sep{color:rgba(17,28,26,.3);}
.crumbs .current{color:var(--ink);font-weight:500;}

.article-head{max-width:880px;padding:22px 0 34px;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;background:rgba(31,92,74,.1);color:var(--brand);
  font-size:12.5px;font-weight:600;letter-spacing:.06em;
}
.article-title{
  font-size:clamp(2rem,4vw,3.05rem);
  font-weight:800;line-height:1.24;letter-spacing:-.02em;
  margin:18px 0 0;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:20px;font-size:13px;color:var(--muted);}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:rgba(17,28,26,.25);}
.article-cover{margin:8px 0 0;border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-soft);}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;}

/* ---------- article body ---------- */
.article-body{
  max-width:820px;margin:0 auto;padding:52px 0 60px;
  font-size:17.5px;line-height:1.9;color:#1B2422;
}
.article-body p{margin:0 0 1.35em;}
.article-body h2{
  position:relative;font-size:1.7rem;font-weight:750;line-height:1.4;letter-spacing:-.01em;
  margin:2.5em 0 .95em;padding-left:18px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.25em;bottom:.25em;width:4px;border-radius:2px;background:var(--brand);
}
.article-body h3{font-size:1.32rem;font-weight:700;line-height:1.5;margin:2em 0 .7em;}
.article-body h4{font-size:1.12rem;font-weight:700;margin:1.7em 0 .6em;color:var(--brand);}
.article-body ul,.article-body ol{padding-left:1.35em;margin:0 0 1.4em;}
.article-body ul li{list-style:disc;margin:.45em 0;}
.article-body ol li{list-style:decimal;margin:.45em 0;}
.article-body li::marker{color:var(--brand);}
.article-body blockquote{
  margin:1.8em 0;padding:18px 22px;background:var(--sub);
  border-left:4px solid var(--accent);border-radius:0 14px 14px 0;color:#33423D;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:18px;margin:1.6em auto;border:1px solid var(--line);}
.article-body figure{margin:1.8em 0;}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:10px;}
.article-body table{width:100%;border-collapse:collapse;margin:1.8em 0;font-size:15.5px;}
.article-body th{
  background:var(--sub);text-align:left;padding:12px 14px;font-weight:600;
  border-bottom:1px solid var(--line);
}
.article-body td{padding:12px 14px;border-bottom:1px solid var(--line);}
.article-body tr:hover td{background:rgba(31,92,74,.03);}
.article-body pre{
  background:var(--ink);color:#E8EFEA;padding:20px;border-radius:14px;
  overflow-x:auto;font-family:var(--font-mono);font-size:13.5px;line-height:1.7;margin:1.6em 0;
}
.article-body code{
  font-family:var(--font-mono);font-size:.9em;background:var(--sub);
  padding:2px 6px;border-radius:6px;
}
.article-body pre code{background:transparent;padding:0;font-size:inherit;color:inherit;}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:4px;}
.article-body a:hover{color:var(--accent);}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.4em 0;}

.article-empty{
  max-width:820px;margin:0 auto;padding:56px 0 80px;text-align:center;
}
.article-empty .empty-box{
  background:var(--card);border:1px dashed var(--line);border-radius:var(--radius-lg);
  padding:52px 28px;box-shadow:var(--shadow-soft);
}
.article-empty h2{font-size:1.5rem;font-weight:700;margin-bottom:12px;}
.article-empty p{color:var(--muted);margin-bottom:24px;}

/* ---------- footer of article ---------- */
.article-foot{max-width:820px;margin:0 auto;padding-bottom:20px;}
.tag-list{display:flex;flex-wrap:wrap;gap:10px;padding-top:8px;}
.tag{
  font-size:12.5px;letter-spacing:.05em;color:var(--brand);
  background:rgba(31,92,74,.08);border:1px solid rgba(31,92,74,.16);
  padding:6px 13px;border-radius:999px;
}
.back-link{
  display:inline-flex;align-items:center;gap:8px;margin-top:28px;
  font-size:14.5px;font-weight:600;color:var(--brand);
}
.back-link:hover{color:var(--accent);}
.back-link i{transition:transform .25s ease;}
.back-link:hover i{transform:translateX(-4px);}

/* ---------- related ---------- */
.section{padding:88px 0 0;}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:36px;}
.section-title{font-size:clamp(1.6rem,3vw,2.3rem);font-weight:780;letter-spacing:-.02em;line-height:1.3;}
.section-sub{color:var(--muted);font-size:15px;margin-top:10px;max-width:620px;}
.rule{height:1px;background:var(--line);margin-top:26px;}

.post-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow:hidden;display:flex;flex-direction:column;height:100%;
  transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.post-card:hover{transform:translateY(-4px);border-color:var(--brand);box-shadow:var(--shadow-soft);}
.post-card img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.post-card-body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.post-card .cat{font-size:12px;letter-spacing:.08em;color:var(--accent);font-weight:600;}
.post-card h3{font-size:17px;font-weight:700;line-height:1.5;}
.post-card p{font-size:14px;color:var(--muted);line-height:1.7;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.post-card .meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:var(--muted);}
.post-card .more{color:var(--brand);font-weight:600;}
.post-card:hover .more{color:var(--accent);}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--ink);color:#fff;border-radius:26px;
  padding:52px 44px;display:flex;flex-wrap:wrap;align-items:center;
  justify-content:space-between;gap:28px;margin-top:96px;
}
.cta-band h2{font-size:clamp(1.5rem,3vw,2.1rem);font-weight:780;letter-spacing:-.02em;line-height:1.35;}
.cta-band p{color:#A9B6B0;font-size:15px;margin-top:12px;max-width:560px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
.btn-copper{background:var(--accent);color:#fff;}
.btn-copper:hover{background:#C25C2E;}
.btn-outline-light{border-color:rgba(255,255,255,.35);color:#fff;}
.btn-outline-light:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.6);}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:#D8E0DC;padding:76px 0 28px;margin-top:96px;}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.1fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:800;color:#fff;margin-bottom:16px;}
.footer-brand .brand-mark{background:var(--accent);}
.footer-about{font-size:14.5px;color:#A9B6B0;line-height:1.8;max-width:380px;}
.footer-col h4{font-size:14px;color:#fff;letter-spacing:.06em;margin-bottom:16px;font-weight:700;}
.footer-col a{display:block;font-size:14.5px;color:#A9B6B0;padding:6px 0;transition:color .2s ease;}
.footer-col a:hover{color:#fff;}
.footer-col ul li{font-size:14px;color:#A9B6B0;padding:5px 0;line-height:1.7;}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  border-top:1px solid rgba(255,255,255,.12);margin-top:52px;padding-top:24px;
  font-size:13px;color:#8B9993;
}

/* ---------- mobile tabbar ---------- */
.tabbar{display:none;}
@media (max-width:767px){
  .container{padding:0 16px;}
  .nav-desktop{display:none;}
  .header-cta{display:none;}
  .header-inner{height:64px;}
  body{padding-bottom:88px;}
  .article-body{font-size:16.5px;line-height:1.85;padding:38px 0 44px;}
  .article-body h2{font-size:1.42rem;}
  .article-body h3{font-size:1.16rem;}
  .section{padding:56px 0 0;}
  .cta-band{padding:36px 22px;border-radius:20px;margin-top:64px;}
  .site-footer{padding:56px 0 24px;margin-top:64px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .footer-grid > div:first-child{grid-column:1 / -1;}
  .tabbar{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:70;
    background:rgba(255,255,255,.97);backdrop-filter:blur(12px);
    border-top:1px solid var(--line);
    padding-bottom:env(safe-area-inset-bottom);
  }
  .tab-item{
    flex:1;display:flex;flex-direction:column;align-items:center;gap:3px;
    padding:9px 0 8px;font-size:11px;color:var(--muted);position:relative;
  }
  .tab-item i{font-size:16px;}
  .tab-item.active{color:var(--brand);}
  .tab-item.active::before{
    content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
    width:22px;height:3px;border-radius:2px;background:var(--brand);
  }
}
@media (max-width:520px){
  .article-title{font-size:1.72rem;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1;}
}

/* ---------- motion ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .55s ease,transform .55s ease;}
.reveal.is-visible{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: category1 */
:root{
  --ink:#111C1A;
  --ink-2:#1B2A27;
  --brand:#1F5C4A;
  --brand-dark:#174638;
  --copper:#D96C3B;
  --bg:#F6F3EC;
  --card:#FFFFFF;
  --sub:#EDE8DE;
  --line:rgba(17,28,26,.12);
  --muted:#66706C;
  --radius-lg:24px;
  --radius:18px;
  --radius-sm:12px;
  --shadow-soft:0 20px 60px rgba(17,28,26,.08);
  --shadow-card:0 10px 30px rgba(17,28,26,.06);
  --sans:"Noto Sans SC","HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --mono:"IBM Plex Mono","Space Grotesk",ui-monospace,SFMono-Regular,Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;font-family:var(--sans);font-size:16.5px;line-height:1.85;
  color:var(--ink);background:var(--bg);-webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,dl,dd,figure{margin:0}
ul,ol{padding:0;list-style:none}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
input,select,textarea{font:inherit;color:inherit}
::selection{background:rgba(217,108,59,.22)}
:focus-visible{outline:2px solid var(--copper);outline-offset:3px;border-radius:8px}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
.mono{font-family:var(--mono);letter-spacing:.04em}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(246,243,236,.88);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:22px;height:76px}
.brand{display:flex;align-items:center;gap:11px;font-weight:800;letter-spacing:-.01em;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:12px;background:var(--brand);color:#fff;
  display:grid;place-items:center;font-family:var(--mono);font-size:14px;font-weight:600;
  box-shadow:0 8px 20px rgba(31,92,74,.28);
}
.brand-text{font-size:17.5px;white-space:nowrap}
.nav-desktop{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
  padding:9px 14px;border-radius:999px;font-size:14.5px;color:var(--muted);
  transition:color .22s ease,background .22s ease;white-space:nowrap;
}
.nav-link:hover{color:var(--ink);background:var(--sub)}
.nav-link.active{color:var(--brand);background:rgba(31,92,74,.10);font-weight:600}
.header-cta{flex-shrink:0}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  min-height:44px;padding:12px 22px;border-radius:999px;
  font-size:14.5px;font-weight:600;line-height:1.2;border:1px solid transparent;
  transition:background .24s ease,color .24s ease,border-color .24s ease,transform .24s ease,box-shadow .24s ease;
}
.btn .arrow{transition:transform .24s ease}
.btn:hover .arrow{transform:translateX(4px)}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 12px 30px rgba(31,92,74,.22)}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-2px)}
.btn-ghost{border-color:var(--line);color:var(--ink);background:transparent}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);background:#fff;transform:translateY(-2px)}
.btn-light{background:#fff;color:var(--brand);box-shadow:0 12px 30px rgba(0,0,0,.18)}
.btn-light:hover{background:#F6F3EC;transform:translateY(-2px)}
.btn-outline-light{border-color:rgba(255,255,255,.42);color:#fff}
.btn-outline-light:hover{background:rgba(255,255,255,.12);border-color:#fff;transform:translateY(-2px)}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 13px;border-radius:999px;border:1px solid var(--line);
  background:#fff;font-size:12.5px;letter-spacing:.06em;color:var(--muted);
}
.badge-brand{background:rgba(31,92,74,.08);border-color:rgba(31,92,74,.22);color:var(--brand)}
.badge-copper{background:rgba(217,108,59,.10);border-color:rgba(217,108,59,.28);color:#B5521F}
.tag{
  display:inline-block;padding:4px 11px;border-radius:999px;background:var(--sub);
  font-size:12.5px;color:var(--muted);letter-spacing:.04em;
}

/* ---------- 区块 ---------- */
.section{padding:96px 0}
.section-alt{background:var(--sub)}
.section-dark{background:var(--ink);color:#fff}
.section-head{max-width:760px;margin-bottom:46px}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;font-family:var(--mono);
  font-size:12.5px;letter-spacing:.18em;color:var(--copper);text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--copper);display:block}
h2.section-title{
  font-size:clamp(1.7rem,3.1vw,2.6rem);line-height:1.3;font-weight:800;letter-spacing:-.015em;
}
.section-desc{margin-top:16px;color:var(--muted);font-size:16.5px;line-height:1.9}

/* ---------- Hero ---------- */
.hero-cat{
  position:relative;overflow:hidden;color:#fff;
  background:linear-gradient(115deg,rgba(12,22,20,.94) 0%,rgba(17,40,34,.88) 52%,rgba(24,62,50,.76) 100%),
             url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  padding:74px 0 84px;
}
.hero-cat::after{
  content:"";position:absolute;right:-140px;bottom:-160px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(217,108,59,.28),transparent 66%);pointer-events:none;
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:9px;font-size:13.5px;color:rgba(255,255,255,.66);margin-bottom:26px}
.breadcrumb a{color:rgba(255,255,255,.78);transition:color .2s}
.breadcrumb a:hover{color:#fff}
.breadcrumb .sep{opacity:.5}
.breadcrumb .current{color:#fff}
.hero-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:56px;align-items:center;position:relative;z-index:2}
.hero-cat h1{
  font-size:clamp(2.1rem,4.4vw,3.5rem);line-height:1.2;font-weight:800;letter-spacing:-.02em;margin:20px 0 0;
}
.hero-sub{margin-top:20px;font-size:17px;line-height:1.9;color:rgba(255,255,255,.80);max-width:620px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.metrics{
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;
  margin-top:44px;padding-top:30px;border-top:1px solid rgba(255,255,255,.18);
}
.metrics dt{font-family:var(--mono);font-size:11.5px;letter-spacing:.14em;color:rgba(255,255,255,.55);text-transform:uppercase}
.metrics dd{margin:7px 0 0;font-size:15px;color:rgba(255,255,255,.9);line-height:1.6}
.metrics .stat-num{font-family:var(--mono);font-size:clamp(1.5rem,3vw,2.1rem);font-weight:700;color:#fff;line-height:1.1}
.hero-art{position:relative}
.hero-art .hero-bg{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius-lg);
  border:1px solid rgba(255,255,255,.16);
}
.hero-float{
  position:absolute;left:-22px;bottom:-26px;width:238px;background:#fff;color:var(--ink);
  border-radius:var(--radius);padding:14px;box-shadow:0 24px 60px rgba(0,0,0,.28);
  display:flex;gap:13px;align-items:center;
}
.hero-float img{width:62px;height:62px;border-radius:14px;object-fit:cover;flex-shrink:0}
.hero-float strong{display:block;font-size:14.5px;font-weight:700}
.hero-float span{display:block;font-size:12.5px;color:var(--muted);margin-top:3px;line-height:1.6}

/* ---------- 粘性目录 + 模块 ---------- */
.split{display:grid;grid-template-columns:266px 1fr;gap:56px;align-items:start}
.toc{position:sticky;top:104px}
.toc-title{font-family:var(--mono);font-size:12px;letter-spacing:.16em;color:var(--muted);text-transform:uppercase;margin-bottom:16px}
.toc-link{
  display:flex;gap:11px;align-items:baseline;padding:11px 14px;border-radius:14px;
  font-size:14.5px;color:var(--muted);border-left:2px solid transparent;transition:all .22s ease;
}
.toc-link .idx{font-family:var(--mono);font-size:12px;color:var(--copper);opacity:.85}
.toc-link:hover{background:#fff;color:var(--ink)}
.toc-link.active{background:#fff;color:var(--brand);border-left-color:var(--brand);font-weight:600;box-shadow:var(--shadow-card)}
.toc-note{margin-top:22px;padding:18px;border-radius:var(--radius);background:#fff;border:1px solid var(--line);font-size:13.5px;color:var(--muted);line-height:1.8}
.toc-note a{color:var(--brand);font-weight:600;border-bottom:1px solid rgba(31,92,74,.35)}

.module{padding:30px 0;border-top:1px solid var(--line)}
.module:first-child{padding-top:0;border-top:0}
.module:last-child{padding-bottom:0}
.module-head{display:flex;align-items:flex-start;gap:18px}
.module-num{
  flex-shrink:0;width:46px;height:46px;border-radius:14px;background:var(--sub);
  display:grid;place-items:center;font-family:var(--mono);font-size:14px;font-weight:600;color:var(--brand);
}
.module h3{font-size:clamp(1.15rem,2vw,1.4rem);font-weight:700;letter-spacing:-.01em;line-height:1.45}
.module p{margin-top:12px;color:var(--muted);line-height:1.9}
.module ul{margin-top:16px;display:grid;gap:10px}
.module ul li{display:flex;gap:11px;font-size:15px;color:var(--ink-2);line-height:1.8}
.module ul li i{color:var(--copper);font-size:11px;margin-top:9px;flex-shrink:0}
.module-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}

/* ---------- 图文交替 ---------- */
.zig{display:grid;grid-template-columns:1.02fr .98fr;gap:56px;align-items:center}
.zig + .zig{margin-top:88px}
.zig.flip .zig-text{order:2}
.zig-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius-lg);
  border:1px solid var(--line);box-shadow:var(--shadow-soft);
}
.zig-media figcaption{margin-top:14px;font-size:13px;color:var(--muted);letter-spacing:.02em}
.zig-text h3{font-size:clamp(1.35rem,2.6vw,1.95rem);font-weight:800;letter-spacing:-.015em;line-height:1.4}
.zig-text p{margin-top:16px;color:var(--muted);line-height:1.9}
.zig-list{margin-top:22px;display:grid;gap:14px}
.zig-list li{display:flex;gap:13px;align-items:flex-start}
.zig-list .dot{
  flex-shrink:0;width:26px;height:26px;border-radius:9px;background:rgba(31,92,74,.10);
  display:grid;place-items:center;color:var(--brand);font-size:12px;margin-top:5px;
}
.zig-list strong{font-weight:700}
.zig-list span{color:var(--muted);font-size:15px;line-height:1.8;display:block;margin-top:2px}

/* ---------- 能力明细 ---------- */
.cap-list{display:grid;gap:0;border-top:1px solid var(--line)}
.cap-item{
  display:grid;grid-template-columns:78px 1fr auto;gap:24px;align-items:start;
  padding:28px 0;border-bottom:1px solid var(--line);transition:background .25s ease;
}
.cap-item:hover{background:rgba(255,255,255,.7)}
.cap-num{font-family:var(--mono);font-size:15px;font-weight:600;color:var(--copper);padding-top:4px}
.cap-body h3{font-size:1.15rem;font-weight:700;line-height:1.5}
.cap-body p{margin-top:9px;color:var(--muted);font-size:15px;line-height:1.85}
.cap-side{display:flex;flex-direction:column;align-items:flex-end;gap:8px;padding-top:4px}
.cap-side .figure{font-family:var(--mono);font-size:1.35rem;font-weight:700;color:var(--brand);line-height:1}
.cap-side .label{font-size:12.5px;color:var(--muted);letter-spacing:.04em}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 48px;align-items:start}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;justify-content:space-between;align-items:flex-start;gap:18px;
  padding:22px 0;text-align:left;font-size:16.5px;font-weight:600;line-height:1.65;color:var(--ink);
  transition:color .22s ease;
}
.faq-q:hover{color:var(--brand)}
.faq-icon{
  flex-shrink:0;width:28px;height:28px;border-radius:50%;border:1px solid var(--line);
  display:grid;place-items:center;font-size:11px;color:var(--brand);margin-top:4px;
  transition:transform .3s ease,background .3s ease,color .3s ease,border-color .3s ease;
}
.faq-item.open .faq-icon{transform:rotate(180deg);background:var(--brand);color:#fff;border-color:var(--brand)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .4s ease}
.faq-a-inner{padding:0 44px 24px 0}
.faq-a-inner p{color:var(--muted);font-size:15.5px;line-height:1.9}
.faq-item.open .faq-a{max-height:420px}

/* ---------- CTA + 表单 ---------- */
.cta-wrap{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:52px;box-shadow:var(--shadow-soft);
}
.cta-copy h2{font-size:clamp(1.6rem,3vw,2.35rem);font-weight:800;letter-spacing:-.015em;line-height:1.35}
.cta-copy p{margin-top:18px;color:var(--muted);line-height:1.9}
.cta-points{margin-top:26px;display:grid;gap:12px}
.cta-points li{display:flex;gap:11px;font-size:15px;color:var(--ink-2)}
.cta-points i{color:var(--brand);margin-top:7px;font-size:12px}
.lead-form{display:grid;gap:16px}
.field{display:grid;gap:8px}
.field label{font-size:13.5px;font-weight:600;color:var(--ink-2);letter-spacing:.01em}
.field input,.field select,.field textarea{
  width:100%;padding:12px 15px;border-radius:var(--radius-sm);
  border:1px solid var(--line);background:var(--bg);font-size:15px;
  transition:border-color .22s ease,box-shadow .22s ease,background .22s ease;
}
.field textarea{min-height:112px;resize:vertical;line-height:1.75}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;background:#fff;border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(31,92,74,.14);
}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.check{display:flex;gap:10px;align-items:flex-start;font-size:13.5px;color:var(--muted);line-height:1.7}
.check input{width:17px;height:17px;margin-top:4px;accent-color:var(--brand);flex-shrink:0}
.form-note{font-size:13px;color:var(--muted)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--sub);border-top:1px solid var(--line);padding:72px 0 32px;margin-top:96px}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.15fr;gap:44px}
.footer-brand{display:flex;align-items:center;gap:11px;font-weight:800;font-size:17px}
.footer-about{margin-top:18px;color:var(--muted);font-size:14.5px;line-height:1.9;max-width:380px}
.footer-col h4{font-size:14.5px;font-weight:700;margin-bottom:16px;letter-spacing:.02em}
.footer-col a{display:block;color:var(--muted);font-size:14px;padding:6px 0;transition:color .2s ease,transform .2s ease}
.footer-col a:hover{color:var(--brand);transform:translateX(3px)}
.footer-col ul{display:grid;gap:8px;color:var(--muted);font-size:14px;line-height:1.8}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  margin-top:48px;padding-top:24px;border-top:1px solid var(--line);
  font-size:13px;color:var(--muted);
}

/* ---------- 移动端底部 Tab ---------- */
.mobile-tab{
  position:fixed;left:0;right:0;bottom:0;z-index:80;display:none;
  background:rgba(255,255,255,.96);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom);
}
.mobile-tab-inner{display:grid;grid-template-columns:repeat(5,1fr);height:68px}
.tab-item{
  position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;
  font-size:10.5px;color:var(--muted);letter-spacing:.02em;transition:color .22s ease;
}
.tab-item i{font-size:16px}
.tab-item.active{color:var(--brand);font-weight:600}
.tab-item.active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:24px;height:2px;border-radius:2px;background:var(--brand);
}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .55s ease,transform .55s ease}
.reveal.in{opacity:1;transform:none}

/* ---------- 锚点偏移 ---------- */
[id]{scroll-margin-top:104px}

/* ---------- 响应式 ---------- */
@media (max-width:1100px){
  .split{grid-template-columns:1fr;gap:36px}
  .toc{position:static;top:auto}
  .toc-link{display:inline-flex;border-left:0;border:1px solid var(--line);background:#fff;margin:0 8px 8px 0;padding:8px 14px}
  .toc-link.active{border-color:var(--brand)}
  .toc-note{margin-top:14px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
}
@media (max-width:1023px){
  .nav-desktop{display:none}
  .header-cta{display:none}
  .mobile-tab{display:block}
  body{padding-bottom:84px}
  .header-inner{height:64px}
  .hero-grid{grid-template-columns:1fr;gap:42px}
  .hero-float{position:static;width:100%;margin-top:18px;box-shadow:var(--shadow-card)}
}
@media (max-width:900px){
  .section{padding:64px 0}
  .zig{grid-template-columns:1fr;gap:28px}
  .zig.flip .zig-text{order:0}
  .zig + .zig{margin-top:60px}
  .faq-grid{grid-template-columns:1fr;gap:0}
  .cta-wrap{grid-template-columns:1fr;gap:34px;padding:32px}
  .site-footer{padding:56px 0 28px;margin-top:64px}
}
@media (max-width:640px){
  .container{padding:0 16px}
  body{font-size:16px}
  .hero-cat{padding:52px 0 62px}
  .metrics{grid-template-columns:1fr 1fr;gap:18px}
  .cap-item{grid-template-columns:1fr;gap:12px;padding:24px 0}
  .cap-side{flex-direction:row;align-items:baseline;gap:10px;padding-top:0}
  .field-row{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .faq-a-inner{padding-right:0}
  .hero-actions .btn{width:100%}
  .cta-wrap{padding:24px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category2 */
:root{
  --ink:#111C1A;
  --jade:#1F5C4A;
  --jade-dark:#17453A;
  --jade-soft:rgba(31,92,74,.08);
  --copper:#D96C3B;
  --copper-soft:rgba(217,108,59,.12);
  --cream:#F6F3EC;
  --sand:#EDE8DE;
  --white:#FFFFFF;
  --muted:#66706C;
  --line:rgba(17,28,26,.12);
  --line-soft:rgba(255,255,255,.12);
  --r-xl:24px;
  --r-lg:20px;
  --r-md:14px;
  --r-sm:12px;
  --shadow-soft:0 20px 60px rgba(17,28,26,.08);
  --shadow-hover:0 28px 70px rgba(17,28,26,.14);
  --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;
  font-family:"Noto Sans SC","HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  background:var(--cream);
  color:var(--ink);
  font-size:17px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
.mono{font-family:"IBM Plex Mono","Space Grotesk",ui-monospace,Menlo,monospace;letter-spacing:.06em;}
:focus-visible{outline:2px solid var(--copper);outline-offset:3px;border-radius:6px;}
.container{width:100%!important;max-width:1240px!important;margin:0 auto!important;padding:0 24px!important;}
@media (max-width:640px){.container{padding:0 16px!important;}}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--cream);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:78px;}
.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto;}
.brand-mark{
  width:40px;height:40px;border-radius:12px;background:var(--jade);color:#fff;
  display:grid;place-items:center;font-family:"IBM Plex Mono",monospace;font-weight:700;
  font-size:15px;letter-spacing:.04em;box-shadow:0 8px 20px rgba(31,92,74,.24);
}
.brand-text{font-weight:800;font-size:1.06rem;letter-spacing:-.01em;white-space:nowrap;}
.nav-desktop{display:flex;align-items:center;gap:2px;}
.nav-link{
  padding:9px 14px;border-radius:999px;font-size:15px;color:var(--muted);
  transition:color .2s var(--ease),background .2s var(--ease);white-space:nowrap;
}
.nav-link:hover{color:var(--ink);background:var(--sand);}
.nav-link.active{color:var(--jade);background:var(--jade-soft);font-weight:700;}
.header-cta{flex:0 0 auto;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:999px;font-size:15px;font-weight:700;
  border:1px solid transparent;cursor:pointer;
  transition:background .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease),transform .25s var(--ease),box-shadow .25s var(--ease);
}
.btn-primary{background:var(--jade);color:#fff;box-shadow:0 12px 28px rgba(31,92,74,.22);}
.btn-primary:hover{background:var(--jade-dark);transform:translateY(-2px);box-shadow:0 18px 34px rgba(31,92,74,.28);}
.btn-ghost{border-color:var(--line);color:var(--ink);background:transparent;}
.btn-ghost:hover{background:#fff;border-color:var(--jade);color:var(--jade);}
.btn-light{background:#fff;color:var(--jade);}
.btn-light:hover{background:var(--sand);color:var(--jade-dark);transform:translateY(-2px);}
.btn .arrow{transition:transform .25s var(--ease);}
.btn:hover .arrow{transform:translateX(4px);}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:84px 0 88px;}
.hero-bg{
  position:absolute;inset:0;
  background-image:linear-gradient(120deg,rgba(246,243,236,.97) 0%,rgba(246,243,236,.88) 52%,rgba(246,243,236,.72) 100%),url('/assets/images/backpic/back-1.png');
  background-size:cover,cover;background-position:center,center;
}
.hero-inner{position:relative;display:grid;grid-template-columns:1.12fr .88fr;gap:56px;align-items:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;
  background:#fff;border:1px solid var(--line);font-size:13px;font-weight:700;
  color:var(--jade);letter-spacing:.08em;
}
.hero h1{
  margin-top:22px;font-size:clamp(2.35rem,4.2vw,3.4rem);line-height:1.16;
  font-weight:800;letter-spacing:-.02em;
}
.hero-sub{margin-top:22px;font-size:1.06rem;color:var(--muted);max-width:640px;}
.hero-actions{margin-top:32px;display:flex;gap:14px;flex-wrap:wrap;}
.hero-metrics{
  margin-top:40px;padding-top:24px;border-top:1px solid var(--line);
  display:grid;grid-template-columns:repeat(4,1fr);gap:18px;
}
.hero-metrics strong{
  display:block;font-family:"IBM Plex Mono",monospace;font-size:1.75rem;
  font-weight:700;color:var(--jade);line-height:1.2;
}
.hero-metrics span{font-size:13px;color:var(--muted);line-height:1.6;display:block;margin-top:4px;}
.hero-visual{position:relative;}
.hero-visual>img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-xl);
  box-shadow:var(--shadow-soft);border:1px solid var(--line);
}
.hero-card{
  position:absolute;left:-22px;bottom:-22px;max-width:270px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:18px 20px;box-shadow:var(--shadow-soft);
}
.hero-card .mono{font-size:12px;color:var(--copper);letter-spacing:.14em;font-weight:700;}
.hero-card p{margin-top:8px;font-size:14px;color:var(--muted);line-height:1.75;}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0;}
.section-alt{background:var(--sand);}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head h2{font-size:clamp(1.8rem,3vw,2.5rem);font-weight:800;letter-spacing:-.02em;line-height:1.25;}
.section-head p{margin-top:14px;color:var(--muted);}

/* ---------- 筛选标签 ---------- */
.filter-bar{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:34px;}
.chip{
  padding:9px 18px;border-radius:999px;border:1px solid var(--line);
  background:#fff;font-size:14px;color:var(--muted);cursor:pointer;
  transition:all .22s var(--ease);
}
.chip:hover{border-color:var(--jade);color:var(--jade);}
.chip.is-active{background:var(--jade);border-color:var(--jade);color:#fff;font-weight:700;}

/* ---------- 马赛克网格 ---------- */
.grid-mosaic{display:grid;grid-template-columns:repeat(12,1fr);gap:20px;}
.m-card{
  grid-column:span 4;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-xl);overflow:hidden;display:flex;flex-direction:column;
  transition:transform .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.m-card:hover{transform:translateY(-4px);border-color:var(--jade);box-shadow:var(--shadow-hover);}
.m-card.wide{grid-column:span 7;}
.m-card.mid{grid-column:span 5;}
.m-media img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.m-card.wide .m-media img{aspect-ratio:16/9;}
.m-body{padding:24px 26px 26px;display:flex;flex-direction:column;gap:12px;flex:1;}
.m-body h3{font-size:1.2rem;font-weight:700;letter-spacing:-.01em;line-height:1.45;}
.m-body p{font-size:15px;color:var(--muted);line-height:1.8;}
.tag{
  align-self:flex-start;padding:4px 12px;border-radius:999px;background:var(--jade-soft);
  color:var(--jade);font-size:12px;font-weight:700;letter-spacing:.06em;
}
.tag--copper{background:var(--copper-soft);color:var(--copper);}
.icon-box{
  width:48px;height:48px;border-radius:14px;background:var(--sand);
  display:grid;place-items:center;color:var(--jade);font-size:19px;
}
.link-more{
  margin-top:auto;font-size:14px;font-weight:700;color:var(--jade);
  display:inline-flex;align-items:center;gap:6px;
  transition:color .2s var(--ease);
}
.link-more:hover{color:var(--copper);}
.link-more:hover .arrow{transform:translateX(4px);}
.link-more .arrow{transition:transform .25s var(--ease);}
.m-card.band{
  grid-column:span 12;flex-direction:row;align-items:center;gap:22px;
  background:var(--ink);color:#fff;border-color:transparent;padding:26px 30px;
}
.m-card.band:hover{border-color:transparent;box-shadow:var(--shadow-hover);}
.m-card.band .icon-box{background:rgba(255,255,255,.1);color:#fff;flex:0 0 auto;}
.m-card.band .band-text{flex:1;min-width:0;}
.m-card.band h3{font-size:1.15rem;font-weight:700;}
.m-card.band p{color:rgba(255,255,255,.72);font-size:15px;margin-top:6px;}
.m-card.band .link-more{margin-top:0;color:#fff;flex:0 0 auto;}
.m-card.band .link-more:hover{color:#F0C7AF;}

/* ---------- 场景轨道 ---------- */
.rail{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:6px 2px 18px;-webkit-overflow-scrolling:touch;
}
.rail::-webkit-scrollbar{height:6px;}
.rail::-webkit-scrollbar-thumb{background:rgba(17,28,26,.18);border-radius:999px;}
.rail-card{
  flex:0 0 306px;scroll-snap-align:start;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-xl);overflow:hidden;display:flex;flex-direction:column;
  transition:transform .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.rail-card:hover{transform:translateY(-4px);border-color:var(--jade);box-shadow:var(--shadow-hover);}
.rail-card img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.rail-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.rail-body h3{font-size:1.08rem;font-weight:700;}
.rail-body p{font-size:14.5px;color:var(--muted);line-height:1.8;}

/* ---------- 对比区 ---------- */
.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.compare-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-xl);
  padding:34px 32px;display:flex;flex-direction:column;gap:18px;
  transition:transform .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.compare-card:hover{transform:translateY(-4px);border-color:var(--jade);box-shadow:var(--shadow-hover);}
.compare-card h3{font-size:1.35rem;font-weight:800;letter-spacing:-.01em;}
.compare-card .sub{font-size:14.5px;color:var(--muted);}
.compare-card ul{display:flex;flex-direction:column;gap:11px;margin-top:4px;}
.compare-card li{display:flex;gap:10px;font-size:15px;color:var(--muted);line-height:1.75;}
.compare-card li i{color:var(--jade);margin-top:6px;font-size:13px;}
.compare-card.is-featured{background:var(--ink);border-color:transparent;color:#fff;box-shadow:var(--shadow-soft);}
.compare-card.is-featured .sub,
.compare-card.is-featured li{color:rgba(255,255,255,.76);}
.compare-card.is-featured li i{color:#7EC2A8;}
.compare-note{margin-top:22px;font-size:14px;color:var(--muted);}

/* ---------- 公告带 ---------- */
.notice-band{background:var(--sand);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.notice-inner{display:flex;align-items:center;gap:18px;padding:22px 24px;flex-wrap:wrap;}
.notice-inner p{flex:1;min-width:240px;font-size:15px;color:var(--muted);}
.badge{
  padding:5px 12px;border-radius:999px;background:var(--ink);color:#fff;
  font-size:12px;font-weight:700;letter-spacing:.08em;flex:0 0 auto;
}

/* ---------- FAQ ---------- */
.faq-list{max-width:960px;border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;background:none;border:0;padding:22px 4px;display:flex;align-items:center;
  justify-content:space-between;gap:20px;text-align:left;font-size:1.05rem;font-weight:700;
  cursor:pointer;transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--jade);}
.faq-q .plus{
  flex:0 0 auto;width:28px;height:28px;border-radius:50%;border:1px solid var(--line);
  display:grid;place-items:center;color:var(--jade);font-size:13px;
  transition:transform .3s var(--ease),background .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease);
}
.faq-item.open .plus{transform:rotate(45deg);background:var(--jade);color:#fff;border-color:var(--jade);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s var(--ease);}
.faq-a p{padding:0 4px 24px;color:var(--muted);font-size:16px;max-width:840px;}

/* ---------- CTA ---------- */
.cta-section{background:var(--jade);color:#fff;padding:96px 0;}
.cta-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:center;}
.cta-copy h2{font-size:clamp(1.9rem,3.2vw,2.7rem);font-weight:800;letter-spacing:-.02em;line-height:1.25;}
.cta-copy p{margin-top:18px;color:rgba(255,255,255,.82);font-size:1.02rem;max-width:520px;}
.cta-actions{margin-top:30px;display:flex;gap:14px;flex-wrap:wrap;}
.cta-form{
  background:#fff;color:var(--ink);border-radius:var(--r-xl);padding:30px 30px 28px;
  box-shadow:var(--shadow-soft);
}
.cta-form h3{font-size:1.2rem;font-weight:800;margin-bottom:6px;}
.cta-form .form-hint{font-size:13.5px;color:var(--muted);margin-bottom:20px;}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.form-field{display:flex;flex-direction:column;gap:7px;}
.form-field.full{grid-column:span 2;}
.form-field label{font-size:13px;font-weight:700;color:var(--muted);letter-spacing:.02em;}
.form-field input,.form-field select,.form-field textarea{
  background:var(--cream);border:1px solid var(--line);border-radius:var(--r-sm);
  padding:11px 14px;font-size:15px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.form-field textarea{resize:vertical;min-height:96px;}
.form-field input:focus,.form-field select:focus,.form-field textarea:focus{
  outline:none;border-color:var(--jade);box-shadow:0 0 0 3px rgba(31,92,74,.16);
}
.form-field input:invalid:not(:placeholder-shown){border-color:var(--copper);}
.check-row{display:flex;align-items:flex-start;gap:9px;grid-column:span 2;font-size:13.5px;color:var(--muted);}
.check-row input{width:16px;height:16px;margin-top:4px;accent-color:var(--jade);}
.form-submit{grid-column:span 2;margin-top:4px;}
.form-msg{grid-column:span 2;font-size:14px;font-weight:700;color:var(--jade);display:none;}
.form-msg.show{display:block;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);padding:76px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:11px;color:#fff;font-weight:800;font-size:1.08rem;margin-bottom:16px;}
.footer-about{font-size:14px;line-height:1.9;max-width:360px;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;letter-spacing:.02em;font-weight:700;}
.footer-col a{display:block;font-size:14px;padding:6px 0;transition:color .2s var(--ease);}
.footer-col a:hover{color:#fff;}
.footer-col ul li{font-size:14px;padding:6px 0;line-height:1.7;}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid var(--line-soft);
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- 移动端底部 Tab ---------- */
.mobile-tabbar{display:none;}
.tab-item{
  flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:4px;font-size:11px;color:var(--muted);padding:6px 2px;min-height:48px;
  position:relative;transition:color .2s var(--ease);
}
.tab-item i{font-size:17px;}
.tab-item.is-active{color:var(--jade);font-weight:700;}
.tab-item.is-active::before{
  content:"";position:absolute;top:-8px;width:22px;height:3px;border-radius:999px;background:var(--jade);
}

/* ---------- 动效 ---------- */
html.js .reveal{opacity:0;transform:translateY(12px);transition:opacity .55s var(--ease),transform .55s var(--ease);}
html.js .reveal.is-visible{opacity:1;transform:none;}
html.js .grid-mosaic .m-card,
html.js .rail .rail-card{transition-delay:0ms;}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .nav-desktop{display:none;}
  .header-cta{display:none;}
  .header-inner{height:68px;}
  .hero{padding:56px 0 64px;}
  .hero-inner{grid-template-columns:1fr;gap:40px;}
  .hero-card{position:static;margin-top:16px;max-width:100%;}
  .section{padding:72px 0;}
  .m-card,.m-card.wide,.m-card.mid{grid-column:span 6;}
  .m-card.band{grid-column:span 12;}
  .compare-grid{grid-template-columns:1fr;}
  .cta-grid{grid-template-columns:1fr;gap:36px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  body{padding-bottom:88px;}
  .mobile-tabbar{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:70;background:#fff;
    border-top:1px solid var(--line);
    padding:8px 6px calc(8px + env(safe-area-inset-bottom));
  }
}
@media (max-width:767px){
  .m-card,.m-card.wide,.m-card.mid{grid-column:span 12;}
  .m-card.band{flex-direction:column;align-items:flex-start;gap:14px;padding:24px;}
  .hero-metrics{grid-template-columns:1fr 1fr;gap:20px;}
  .form-grid{grid-template-columns:1fr;}
  .form-field.full,.check-row,.form-submit,.form-msg{grid-column:span 1;}
  .section-head{margin-bottom:32px;}
  .faq-q{font-size:1rem;padding:20px 2px;}
}
@media (max-width:520px){
  .brand-text{font-size:.98rem;}
  .hero h1{font-size:2.1rem;}
  .cta-form{padding:24px 20px;}
  .footer-grid{grid-template-columns:1fr;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  html.js .reveal{opacity:1!important;transform:none!important;transition:none!important;}
  .faq-a{transition:none;}
  *{animation:none!important;}
}