/* roulang page: index */
:root{
  --brand-ink:#0E2A22;
  --brand-ink-deep:#0B1A15;
  --brand:#146B4E;
  --cta:#FF5A1F;
  --cta-dark:#E84A11;
  --accent:#16C79A;
  --bg:#F7F6F3;
  --card:#FFFFFF;
  --line:#E7E4DD;
  --text:#222826;
  --muted:#6B7370;
  --text-inv:#F2F5F3;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-input:10px;
  --shadow-1:0 1px 2px rgba(11,26,21,.06);
  --shadow-2:0 18px 40px -18px rgba(11,26,21,.28);
  --shadow-3:0 24px 60px -24px rgba(11,26,21,.36);
  --ease:cubic-bezier(.22,.61,.36,1);
  --section:104px;
  --gutter:24px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"Noto Sans SC","HarmonyOS Sans","PingFang SC","Microsoft YaHei",sans-serif;
  font-size:1rem;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand);text-decoration:none;transition:color 160ms var(--ease)}
a:hover{color:var(--cta)}
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}
.num,.stat b,.price,.metric{font-variant-numeric:tabular-nums}
:focus-visible{outline:2px solid var(--cta);outline-offset:2px;border-radius:4px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:var(--section) 0}
.section--tight{padding:72px 0}
.bg-ink{background:linear-gradient(180deg,var(--brand-ink) 0%,var(--brand-ink-deep) 100%);color:var(--text-inv)}
.bg-paper{background:#FFFFFF}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:.8125rem;font-weight:700;letter-spacing:.08em;
  color:var(--brand);text-transform:uppercase;
}
.eyebrow::before{content:"";width:26px;height:2px;background:var(--cta);display:block}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:44px}
.sec-head h2{font-size:clamp(1.6rem,2.6vw,2.4rem);line-height:1.2;font-weight:800;letter-spacing:-.02em;color:var(--brand-ink)}
.bg-ink .sec-head h2{color:var(--text-inv)}
.sec-head p{color:var(--muted);max-width:620px;margin-top:12px}
.bg-ink .sec-head p{color:rgba(242,245,243,.72)}
.link-more{font-weight:700;font-size:.9375rem;white-space:nowrap;position:relative}
.link-more::after{
  content:"";position:absolute;left:0;bottom:-4px;width:0;height:2px;background:var(--cta);
  transition:width 240ms var(--ease);
}
.link-more:hover::after{width:100%}

/* Buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border:0;border-radius:var(--radius-btn);
  font-weight:700;font-size:.9375rem;cursor:pointer;
  transition:transform 160ms var(--ease),box-shadow 240ms var(--ease),background-color 160ms var(--ease),color 160ms var(--ease),border-color 160ms var(--ease);
  text-align:center;line-height:1;
}
.btn i{font-size:.875rem}
.btn--primary{background:var(--cta);color:#fff;box-shadow:0 10px 22px -12px rgba(255,90,31,.7)}
.btn--primary:hover{background:var(--cta-dark);color:#fff;transform:translateY(-2px);box-shadow:0 16px 30px -14px rgba(255,90,31,.75)}
.btn--primary:active{transform:translateY(-1px)}
.btn--ghost{background:transparent;color:var(--text-inv);border:1px solid rgba(242,245,243,.42)}
.btn--ghost:hover{color:#fff;border-color:var(--cta);transform:translateY(-2px)}
.btn--outline{background:transparent;color:var(--brand);border:1px solid var(--brand)}
.btn--outline:hover{background:var(--brand);color:#fff;transform:translateY(-2px)}
.btn--lg{height:52px;padding:0 26px;font-size:1rem}
.btn--sm{height:36px;padding:0 14px;font-size:.875rem}
.btn[disabled]{opacity:.4;cursor:not-allowed;transform:none}

/* Badges */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;
  border-radius:999px;background:rgba(20,107,78,.1);color:var(--brand);
  font-size:.8125rem;font-weight:700;
}
.badge--cta{background:var(--cta);color:#fff}
.badge--line{background:transparent;border:1px solid var(--line);color:var(--muted)}

/* Header */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--brand-ink);
  transition:height 240ms var(--ease),box-shadow 240ms var(--ease);
}
.site-header .container{
  height:72px;display:flex;align-items:center;gap:24px;
  transition:height 240ms var(--ease);
}
.site-header.is-scrolled{box-shadow:0 14px 30px -18px rgba(0,0,0,.55)}
.site-header.is-scrolled .container{height:60px}
.logo{
  display:flex;align-items:center;gap:10px;color:var(--text-inv);
  font-weight:800;font-size:1.0625rem;letter-spacing:-.02em;white-space:nowrap;
}
.logo:hover{color:var(--text-inv)}
.logo__mark{
  width:32px;height:32px;border-radius:9px;background:var(--brand);
  display:grid;place-items:center;color:#fff;font-size:.875rem;font-weight:800;
  border:1px solid rgba(22,199,154,.5);
}
.logo__sub{color:var(--accent);font-weight:700}
.nav-main{display:flex;align-items:center;gap:26px;margin-left:auto}
.nav-main a{
  color:var(--text-inv);font-size:.9375rem;font-weight:600;position:relative;padding:6px 0;
}
.nav-main a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--cta);
  transition:width 200ms var(--ease);
}
.nav-main a:hover{color:var(--cta)}
.nav-main a:hover::after{width:100%}
.nav-main a.is-active{color:#fff}
.nav-main a.is-active::after{width:100%}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:8px}
.hamburger{
  display:none;width:44px;height:44px;border-radius:var(--radius-btn);
  background:rgba(242,245,243,.08);border:1px solid rgba(242,245,243,.24);
  color:var(--text-inv);cursor:pointer;
}
.drawer{
  position:fixed;inset:0;z-index:80;background:var(--brand-ink);
  display:flex;flex-direction:column;padding:24px;
  transform:translateY(-100%);opacity:0;pointer-events:none;
  transition:transform 280ms var(--ease),opacity 200ms var(--ease);
}
.drawer.is-open{transform:translateY(0);opacity:1;pointer-events:auto}
.drawer__top{display:flex;align-items:center;justify-content:space-between;margin-bottom:28px}
.drawer__close{width:44px;height:44px;border-radius:var(--radius-btn);background:rgba(242,245,243,.08);border:1px solid rgba(242,245,243,.24);color:var(--text-inv);cursor:pointer}
.drawer nav{display:flex;flex-direction:column;gap:4px}
.drawer nav a{
  color:var(--text-inv);font-size:1.125rem;font-weight:700;padding:14px 0;
  border-bottom:1px solid rgba(242,245,243,.12);
}
.drawer nav a:hover{color:var(--cta)}
.drawer__foot{margin-top:auto;display:grid;gap:12px;padding-top:24px}

/* Hero */
.hero{position:relative;overflow:hidden;background:linear-gradient(180deg,var(--brand-ink) 0%,var(--brand-ink-deep) 100%);color:var(--text-inv)}
.hero__track{
  position:absolute;inset:0;pointer-events:none;opacity:.12;
  background-image:radial-gradient(closest-side,transparent 96%,#16C79A 100%);
  background-size:140% 140%;background-position:-20% 120%;background-repeat:no-repeat;
}
.hero__inner{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;padding:96px 0 88px}
.hero h1{
  font-size:clamp(2.4rem,5vw,4rem);line-height:1.08;font-weight:900;letter-spacing:-.03em;
  color:#fff;margin:18px 0 20px;
}
.hero__lead{font-size:1.0625rem;color:rgba(242,245,243,.78);max-width:540px}
.hero__cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero__trust{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:48px;
  border-top:1px solid rgba(242,245,243,.16);padding-top:24px;
}
.hero__trust div{padding-right:16px;border-right:1px solid rgba(242,245,243,.16)}
.hero__trust div:last-child{border-right:0}
.hero__trust .stat{display:block;font-size:1.25rem;font-weight:800;color:#fff}
.hero__trust span{font-size:.8125rem;color:rgba(242,245,243,.66)}
.hero__media{position:relative}
.hero__media img{
  width:100%;aspect-ratio:5/6;object-fit:cover;border-radius:var(--radius-card);
  box-shadow:var(--shadow-3);
}
.hero__tagline{
  position:absolute;left:-18px;bottom:26px;background:var(--card);color:var(--brand-ink);
  border-radius:14px;padding:14px 18px;box-shadow:var(--shadow-2);
  font-size:.875rem;font-weight:700;display:flex;align-items:center;gap:10px;max-width:250px;
}
.hero__tagline i{color:var(--cta)}

/* Value 01/02/03 */
.value-row{
  display:grid;grid-template-columns:120px 1fr;gap:32px;padding:32px 0;
  border-bottom:1px solid var(--line);transition:transform 240ms var(--ease);
}
.value-row:first-child{border-top:1px solid var(--line)}
.value-row:hover{transform:translateX(6px)}
.value-row__no{
  font-size:2.25rem;font-weight:900;letter-spacing:-.04em;color:var(--brand);
  font-variant-numeric:tabular-nums;line-height:1;
}
.value-row h3{font-size:1.15rem;font-weight:700;line-height:1.4;color:var(--brand-ink);margin-bottom:8px}
.value-row p{color:var(--muted);max-width:760px}

/* Feature asymmetric grid */
.feature-grid{display:grid;grid-template-columns:7fr 5fr;gap:24px}
.feature-grid__col{display:grid;gap:24px}
.card{
  background:var(--card);border-radius:var(--radius-card);box-shadow:var(--shadow-1);
  overflow:hidden;transition:transform 240ms var(--ease),box-shadow 240ms var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.card__body{padding:26px}
.card__body h3{font-size:1.15rem;font-weight:700;color:var(--brand-ink);margin-bottom:10px}
.card__body p{color:var(--muted);font-size:.9375rem}
.card__media{aspect-ratio:16/9;overflow:hidden;background:linear-gradient(135deg,var(--brand-ink),var(--brand))}
.card__media img{width:100%;height:100%;object-fit:cover;transition:transform 320ms var(--ease)}
.card:hover .card__media img{transform:scale(1.04)}
.icon-line{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  border:2px solid var(--brand);color:var(--brand);background:rgba(20,107,78,.06);
}
.icon-line--cta{border-color:var(--cta);color:var(--cta);background:rgba(255,90,31,.07)}
.feature-main .card__media{aspect-ratio:16/10}
.feature-main .card__body{padding:30px}
.feature-mini{display:flex;gap:16px;align-items:flex-start;padding:22px 24px}

/* Scene rail */
.rail-wrap{position:relative}
.rail{
  display:flex;gap:24px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:4px 4px 20px;scrollbar-width:thin;
}
.rail > *{flex:0 0 clamp(260px,31%,380px);scroll-snap-align:start}
.rail-nav{display:flex;gap:10px;justify-content:flex-end;margin-top:8px}
.rail-nav button{
  width:44px;height:44px;border-radius:var(--radius-btn);background:var(--card);
  border:1px solid var(--line);color:var(--brand-ink);cursor:pointer;
  transition:all 200ms var(--ease);
}
.rail-nav button:hover{background:var(--cta);border-color:var(--cta);color:#fff;transform:translateY(-2px)}
.scene-card{background:var(--card);border-radius:var(--radius-card);box-shadow:var(--shadow-1);overflow:hidden;transition:transform 240ms var(--ease),box-shadow 240ms var(--ease)}
.scene-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.scene-card img{aspect-ratio:4/3;object-fit:cover;width:100%;transition:transform 320ms var(--ease)}
.scene-card:hover img{transform:scale(1.04)}
.scene-card__body{padding:22px}
.scene-card__body h3{font-size:1.05rem;font-weight:700;color:var(--brand-ink);margin-bottom:8px}
.scene-card__body p{font-size:.9375rem;color:var(--muted)}

/* Cases */
.case{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;padding:36px 0}
.case:nth-child(even) .case__media{order:2}
.case__media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius-card);box-shadow:var(--shadow-1)}
.case blockquote{
  border-left:4px solid var(--cta);padding-left:20px;margin:0 0 22px;
  font-size:1.25rem;line-height:1.7;color:var(--brand-ink);font-weight:600;
}
.case__meta{display:flex;gap:40px;flex-wrap:wrap}
.metric b{display:block;font-size:1.75rem;font-weight:900;color:var(--brand)}
.metric span{font-size:.8125rem;color:var(--muted)}

/* Plan */
.plan-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}
.plan{
  background:var(--card);border-radius:var(--radius-card);padding:30px;
  box-shadow:var(--shadow-1);display:flex;flex-direction:column;position:relative;
  transition:transform 240ms var(--ease),box-shadow 240ms var(--ease);
}
.plan:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.plan--hot{border:2px solid var(--cta)}
.plan--hot .plan__flag{
  position:absolute;top:-14px;right:24px;background:var(--cta);color:#fff;
  font-size:.75rem;font-weight:700;padding:6px 14px;border-radius:999px;
}
.plan h3{font-size:1.15rem;font-weight:700;color:var(--brand-ink)}
.plan__desc{color:var(--muted);font-size:.875rem;margin-top:6px}
.price{font-size:2.5rem;font-weight:900;letter-spacing:-.03em;color:var(--brand-ink);margin:18px 0 4px;line-height:1}
.price span{font-size:.9375rem;font-weight:600;color:var(--muted);letter-spacing:0}
.plan__list{margin:22px 0 26px;display:grid;gap:12px}
.plan__list li{display:flex;gap:10px;font-size:.9375rem;color:var(--text)}
.plan__list i{color:var(--brand);margin-top:5px;font-size:.8125rem}
.plan .btn{margin-top:auto;width:100%}

/* CMS list */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.post-card{
  background:var(--card);border-radius:var(--radius-card);overflow:hidden;
  box-shadow:var(--shadow-1);display:flex;flex-direction:column;
  transition:transform 240ms var(--ease),box-shadow 240ms var(--ease);
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.post-card__media{aspect-ratio:16/9;overflow:hidden;background:linear-gradient(135deg,var(--brand-ink),var(--brand))}
.post-card__media img{width:100%;height:100%;object-fit:cover;transition:transform 320ms var(--ease)}
.post-card:hover .post-card__media img{transform:scale(1.04)}
.post-card__body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1}
.post-card__body h3{
  font-size:1.05rem;font-weight:700;line-height:1.5;color:var(--brand-ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-card__body p{
  font-size:.875rem;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-card__foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  font-size:.8125rem;color:var(--muted);padding-top:12px;border-top:1px solid var(--line);
}
.post-card__foot i{transition:transform 200ms var(--ease);color:var(--cta)}
.post-card:hover .post-card__foot i{transform:translateX(4px)}
.empty-state{
  text-align:center;padding:56px 24px;border-radius:var(--radius-card);
  background:var(--card);box-shadow:var(--shadow-1);
}
.empty-state i{font-size:1.75rem;color:var(--brand);margin-bottom:14px;display:block}
.empty-state p{color:var(--muted);margin-bottom:18px}

/* FAQ */
.faq{max-width:840px;margin:0 auto}
.faq__item{border-bottom:1px solid var(--line)}
.faq__q{
  width:100%;background:none;border:0;padding:22px 0;display:flex;align-items:center;
  justify-content:space-between;gap:20px;cursor:pointer;text-align:left;
  font-size:1.0625rem;font-weight:700;color:var(--brand-ink);transition:color 160ms var(--ease);
}
.faq__q:hover{color:var(--brand)}
.faq__item.is-open .faq__q{color:var(--brand)}
.faq__q i{color:var(--cta);transition:transform 240ms var(--ease);flex:0 0 auto}
.faq__item.is-open .faq__q i{transform:rotate(90deg)}
.faq__a{max-height:0;overflow:hidden;transition:max-height 280ms var(--ease)}
.faq__a p{color:var(--muted);padding:0 0 22px;max-width:760px}

/* CTA band */
.cta-band{background:linear-gradient(180deg,var(--brand-ink) 0%,var(--brand-ink-deep) 100%);color:var(--text-inv)}
.cta-band .container{display:flex;align-items:center;justify-content:space-between;gap:32px;padding:56px 24px}
.cta-band h2{font-size:clamp(1.4rem,2.2vw,2rem);font-weight:800;letter-spacing:-.02em;color:#fff}
.cta-band p{color:rgba(242,245,243,.72);margin-top:8px;max-width:640px}

/* Footer */
.site-footer{background:var(--brand-ink-deep);color:rgba(242,245,243,.72);padding-top:64px}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px}
.site-footer h4{font-size:.9375rem;color:#fff;font-weight:700;margin-bottom:16px}
.site-footer a{color:rgba(242,245,243,.72);font-size:.875rem}
.site-footer a:hover{color:#fff}
.foot-list{display:grid;gap:10px}
.foot-brand .logo{margin-bottom:16px}
.foot-brand p{font-size:.875rem;max-width:320px}
.qr{
  width:110px;height:110px;border-radius:12px;background:rgba(242,245,243,.08);
  border:1px solid rgba(242,245,243,.16);display:grid;place-items:center;
  color:rgba(242,245,243,.5);font-size:.75rem;text-align:center;margin-top:14px;padding:8px;
}
.foot-bottom{
  border-top:1px solid rgba(242,245,243,.12);padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  font-size:.8125rem;color:rgba(242,245,243,.55);
}

/* Reveal */
.reveal{opacity:0;transform:translateY(16px);transition:opacity 420ms var(--ease),transform 420ms var(--ease)}
.reveal.is-in{opacity:1;transform:none}

@media (max-width:1024px){
  :root{--section:80px}
  .hero__inner{grid-template-columns:1fr;gap:40px;padding:72px 0}
  .hero__media img{aspect-ratio:16/10}
  .feature-grid{grid-template-columns:1fr}
  .plan-grid{grid-template-columns:repeat(2,1fr)}
  .post-grid{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr}
  .case{grid-template-columns:1fr;gap:28px}
  .case:nth-child(even) .case__media{order:0}
  .nav-main,.nav-actions .btn--outline{display:none}
  .hamburger{display:grid;place-items:center}
  .nav-actions{margin-left:auto}
}
@media (max-width:640px){
  :root{--section:60px;--gutter:16px}
  .container{padding:0 16px}
  body{font-size:.95rem;line-height:1.7}
  .sec-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:30px}
  .hero__trust{grid-template-columns:1fr 1fr;gap:16px 0}
  .hero__trust div:nth-child(2){border-right:0}
  .value-row{grid-template-columns:1fr;gap:12px}
  .plan-grid,.post-grid{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr;gap:28px}
  .cta-band .container{flex-direction:column;align-items:flex-start}
  .rail > *{flex:0 0 84%}
  .hero__tagline{position:static;margin-top:16px;max-width:none}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category1 */
:root{
  --brand-ink:#0E2A22;
  --brand-ink-deep:#0B1A15;
  --brand:#146B4E;
  --brand-soft:#E8F2ED;
  --cta:#FF5A1F;
  --cta-deep:#E84C13;
  --accent:#16C79A;
  --bg:#F7F6F3;
  --card:#FFFFFF;
  --line:#E7E4DD;
  --text:#222826;
  --muted:#6B7370;
  --text-inv:#F2F5F3;
  --r-card:16px;
  --r-btn:10px;
  --r-input:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(11,26,21,.06);
  --sh-2:0 18px 40px -18px rgba(11,26,21,.28);
  --sh-3:0 24px 60px -24px rgba(11,26,21,.36);
  --ease:cubic-bezier(.22,.61,.36,1);
  --t-fast:160ms;
  --t-mid:240ms;
  --gutter:24px;
  --sec-y:104px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:112px;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"Noto Sans SC","HarmonyOS Sans","PingFang SC","Microsoft YaHei",sans-serif;
  font-size:1rem;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand);text-decoration:none;}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--cta);outline-offset:2px;border-radius:4px;}
body,.number,[data-num]{font-variant-numeric:tabular-nums;}
h1,h2,h3,h4{font-weight:800;color:var(--brand-ink);margin:0;letter-spacing:-.02em;}
h1{font-size:clamp(2.4rem,5vw,4rem);line-height:1.08;letter-spacing:-.03em;font-weight:900;}
h2{font-size:clamp(1.6rem,2.6vw,2.4rem);line-height:1.2;}
h3{font-size:1.15rem;line-height:1.4;font-weight:700;}
p{margin:0 0 1rem;}
ul,ol{margin:0 0 1rem;padding-left:1.2rem;}
/* 覆盖 Foundation 默认观感 */
a{color:var(--brand);}
a:hover{color:var(--cta);}
button,.button{cursor:pointer;font-family:inherit;}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:var(--gutter);
  padding-right:var(--gutter);
}
.skip-link{
  position:absolute;left:-9999px;top:0;background:var(--brand-ink);color:var(--text-inv);
  padding:10px 16px;border-radius:0 0 var(--r-btn) 0;z-index:999;
}
.skip-link:focus{left:0;}
/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:.9375rem;font-weight:700;line-height:1;
  border:1px solid transparent;background:transparent;color:var(--brand-ink);
  transition:transform var(--t-fast) var(--ease),background-color var(--t-fast) var(--ease),
             box-shadow var(--t-fast) var(--ease),color var(--t-fast) var(--ease),border-color var(--t-fast) var(--ease);
  text-decoration:none;white-space:nowrap;
}
.btn:hover{transform:translateY(-2px);}
.btn:active{transform:translateY(1px);}
.btn--primary{background:var(--cta);color:#fff;box-shadow:0 8px 20px -12px rgba(255,90,31,.75);}
.btn--primary:hover{background:var(--cta-deep);color:#fff;box-shadow:0 16px 30px -14px rgba(255,90,31,.85);}
.btn--ghost{background:transparent;color:var(--brand-ink);border-color:var(--brand);}
.btn--ghost:hover{background:var(--brand-soft);color:var(--brand);}
.btn--ghost-inv{background:transparent;color:var(--text-inv);border-color:rgba(242,245,243,.55);}
.btn--ghost-inv:hover{background:rgba(242,245,243,.12);color:#fff;border-color:#fff;}
.btn--lg{height:52px;padding:0 26px;font-size:1rem;}
.btn--sm{height:36px;padding:0 14px;font-size:.875rem;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-weight:700;color:var(--brand);
  background-image:linear-gradient(currentColor,currentColor);
  background-size:0% 1px;background-position:0 100%;background-repeat:no-repeat;
  transition:background-size var(--t-mid) var(--ease),color var(--t-fast) var(--ease);
}
.link-arrow:hover{background-size:100% 1px;color:var(--cta);}
.link-arrow i{transition:transform var(--t-fast) var(--ease);}
.link-arrow:hover i{transform:translateX(4px);}
/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--brand-ink);
  border-bottom:1px solid rgba(242,245,243,.08);
  transition:box-shadow var(--t-mid) var(--ease),background-color var(--t-mid) var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh-2);background:var(--brand-ink-deep);}
.header-inner{
  display:flex;align-items:center;gap:20px;
  min-height:72px;
  transition:min-height var(--t-mid) var(--ease);
}
.site-header.is-scrolled .header-inner{min-height:60px;}
.logo{
  display:inline-flex;align-items:center;gap:10px;
  font-weight:800;font-size:1.0625rem;letter-spacing:-.02em;color:var(--text-inv);
  white-space:nowrap;
}
.logo:hover{color:var(--text-inv);}
.logo__mark{
  width:32px;height:32px;border-radius:9px;flex:0 0 32px;
  background:linear-gradient(135deg,var(--brand),var(--accent));
  color:#fff;display:inline-flex;align-items:center;justify-content:center;
  font-size:.9375rem;font-weight:900;
}
.logo__sub{color:var(--accent);font-weight:800;}
.nav-main{display:flex;align-items:center;gap:4px;margin-left:8px;flex:1 1 auto;}
.nav-main a{
  position:relative;display:inline-block;
  padding:8px 12px;font-size:.9375rem;font-weight:500;
  color:rgba(242,245,243,.82);
  transition:color var(--t-fast) var(--ease);
}
.nav-main a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:3px;height:2px;
  background:var(--cta);transform:scaleX(0);transform-origin:left;
  transition:transform var(--t-mid) var(--ease);
}
.nav-main a:hover{color:var(--cta);}
.nav-main a:hover::after{transform:scaleX(1);}
.nav-main a[aria-current="page"]{color:#fff;font-weight:700;}
.nav-main a[aria-current="page"]::after{transform:scaleX(1);}
.header-cta{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  background:rgba(242,245,243,.1);border:1px solid rgba(242,245,243,.2);
  color:var(--text-inv);font-size:1.125rem;align-items:center;justify-content:center;
}
.nav-toggle:hover{background:rgba(242,245,243,.18);}
.drawer{
  position:fixed;inset:0;z-index:90;background:var(--brand-ink);
  transform:translateY(-100%);transition:transform var(--t-mid) var(--ease);
  display:flex;flex-direction:column;padding:20px var(--gutter) 28px;overflow-y:auto;
}
.drawer.is-open{transform:translateY(0);}
.drawer__top{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px;}
.drawer__close{
  width:44px;height:44px;border-radius:12px;background:rgba(242,245,243,.1);
  border:1px solid rgba(242,245,243,.2);color:var(--text-inv);font-size:1.125rem;
  display:inline-flex;align-items:center;justify-content:center;
}
.drawer__nav{display:flex;flex-direction:column;gap:2px;}
.drawer__nav a{
  padding:14px 4px;font-size:1.0625rem;font-weight:600;color:var(--text-inv);
  border-bottom:1px solid rgba(242,245,243,.1);
}
.drawer__nav a[aria-current="page"]{color:var(--cta);}
.drawer__foot{margin-top:auto;padding-top:26px;display:flex;flex-direction:column;gap:10px;}
body.drawer-open{overflow:hidden;}
/* ---------- 页头 ---------- */
.page-head{
  background:var(--card);
  border-bottom:1px solid var(--line);
  padding:36px 0 0;
}
.breadcrumb{font-size:.875rem;color:var(--muted);display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:20px;}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--cta);}
.breadcrumb span[aria-current]{color:var(--muted);}
.breadcrumb .sep{opacity:.55;}
.page-head h1{max-width:20em;}
.page-head .lead{margin-top:16px;font-size:1.0625rem;color:var(--muted);max-width:44em;}
.chips{
  display:flex;gap:10px;overflow-x:auto;padding:26px 0 22px;
  scrollbar-width:thin;-webkit-overflow-scrolling:touch;
}
.chips::-webkit-scrollbar{height:6px;}
.chips::-webkit-scrollbar-thumb{background:var(--line);border-radius:999px;}
.chip{
  flex:0 0 auto;display:inline-flex;align-items:center;gap:8px;
  height:38px;padding:0 16px;border-radius:var(--r-pill);
  background:var(--bg);border:1px solid var(--line);color:var(--brand-ink);
  font-size:.875rem;font-weight:600;white-space:nowrap;
  transition:background-color var(--t-fast) var(--ease),border-color var(--t-fast) var(--ease),color var(--t-fast) var(--ease),transform var(--t-fast) var(--ease);
}
.chip:hover{border-color:var(--accent);color:var(--brand);transform:translateY(-2px);}
.chip.is-current{background:var(--cta);border-color:var(--cta);color:#fff;}
.chip.is-current:hover{color:#fff;}
/* ---------- 主体双栏 ---------- */
.main-wrap{padding:var(--sec-y) 0;}
.doc-grid{display:grid;grid-template-columns:240px minmax(0,1fr);gap:48px;align-items:start;}
.side-toc{position:sticky;top:112px;}
.side-toc h2{font-size:.8125rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);font-weight:800;margin-bottom:16px;}
.side-toc nav{display:flex;flex-direction:column;border-left:2px solid var(--line);}
.side-toc a{
  padding:10px 0 10px 16px;margin-left:-2px;border-left:2px solid transparent;
  font-size:.9375rem;color:var(--muted);font-weight:600;position:relative;
  transition:color var(--t-fast) var(--ease),border-color var(--t-fast) var(--ease);
}
.side-toc a:hover{color:var(--brand);border-left-color:var(--accent);}
.side-toc a.is-current{color:var(--brand-ink);border-left-color:var(--cta);}
.side-side-card{
  margin-top:26px;background:var(--card);border-radius:var(--r-card);
  padding:18px;box-shadow:var(--sh-1);
}
.side-side-card h3{font-size:.9375rem;margin-bottom:8px;}
.side-side-card p{font-size:.8125rem;color:var(--muted);margin:0 0 12px;}
.doc-body{max-width:800px;}
.doc-section{padding-bottom:56px;margin-bottom:56px;border-bottom:1px solid var(--line);scroll-margin-top:112px;}
.doc-section:last-of-type{border-bottom:0;margin-bottom:0;}
.doc-section > h2{margin-bottom:14px;}
.doc-section > p.intro{font-size:1.0625rem;color:var(--muted);margin-bottom:26px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:.8125rem;font-weight:800;letter-spacing:.1em;color:var(--brand);
  margin-bottom:12px;
}
.eyebrow::before{content:"";width:24px;height:2px;background:var(--cta);display:block;}
/* 图文交错 */
.split{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:center;margin:22px 0;}
.split--rev .split__media{order:2;}
.split__media{border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-2);aspect-ratio:4/3;background:linear-gradient(135deg,var(--brand-ink),var(--brand));}
.split__media img{width:100%;height:100%;object-fit:cover;transition:transform var(--t-mid) var(--ease);}
.split__media:hover img{transform:scale(1.04);}
.split__text h3{margin-bottom:8px;}
.split__text p{color:var(--muted);margin-bottom:.6rem;}
/* 编号步骤 */
.steps{list-style:none;padding:0;margin:24px 0 0;}
.steps li{
  position:relative;padding:0 0 26px 58px;
  border-left:2px solid var(--line);margin-left:19px;
}
.steps li:last-child{border-left-color:transparent;padding-bottom:0;}
.steps li::before{
  counter-increment:step;content:counter(step,decimal-leading-zero);
  position:absolute;left:-20px;top:-2px;width:38px;height:38px;border-radius:12px;
  background:var(--brand-ink);color:#fff;font-size:.8125rem;font-weight:800;
  display:flex;align-items:center;justify-content:center;
}
.steps{counter-reset:step;}
.steps h3{font-size:1.0625rem;margin-bottom:6px;}
.steps p{color:var(--muted);margin:0;}
/* 参数卡 */
.metric-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:22px;}
.metric{
  background:var(--card);border-radius:var(--r-card);padding:20px;
  box-shadow:var(--sh-1);transition:transform var(--t-fast) var(--ease),box-shadow var(--t-fast) var(--ease);
}
.metric:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.metric .k{font-size:.8125rem;color:var(--muted);font-weight:700;letter-spacing:.04em;}
.metric .v{font-size:1.75rem;font-weight:900;color:var(--brand-ink);line-height:1.2;margin:6px 0 4px;letter-spacing:-.02em;}
.metric .d{font-size:.875rem;color:var(--muted);margin:0;}
/* 提示块 */
.note{
  background:var(--brand-soft);border-left:4px solid var(--brand);
  border-radius:0 var(--r-card) var(--r-card) 0;padding:18px 20px;margin:22px 0;
}
.note strong{color:var(--brand-ink);}
.note p{margin:0;font-size:.9375rem;color:var(--brand-ink);}
.note--warn{background:#FFF1E9;border-left-color:var(--cta);}
.note--warn strong{color:#9B3510;}
.note--warn p{color:#7A2A0D;}
/* 核对清单 */
.check-list{list-style:none;padding:0;margin:20px 0 0;display:grid;gap:12px;}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;
  background:var(--card);border-radius:12px;padding:14px 16px;box-shadow:var(--sh-1);
}
.check-list i{color:var(--accent);margin-top:5px;font-size:1rem;}
.check-list span{color:var(--text);font-size:.9375rem;}
.check-list b{color:var(--brand-ink);}
/* FAQ */
.faq-wrap{padding:0 0 var(--sec-y);}
.faq-head{max-width:800px;margin-bottom:28px;}
.faq-head p{color:var(--muted);margin-top:10px;}
.faq-list{max-width:840px;border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:flex-start;justify-content:space-between;gap:16px;
  background:none;border:0;padding:22px 0;text-align:left;
  font-size:1.0625rem;font-weight:700;color:var(--brand-ink);font-family:inherit;
  transition:color var(--t-fast) var(--ease);
}
.faq-q:hover{color:var(--brand);}
.faq-item.is-open .faq-q{color:var(--brand);}
.faq-q .ico{
  flex:0 0 auto;width:28px;height:28px;border-radius:50%;
  background:var(--brand-soft);color:var(--brand);font-size:.8125rem;
  display:inline-flex;align-items:center;justify-content:center;
  transition:transform var(--t-mid) var(--ease),background-color var(--t-fast) var(--ease);
}
.faq-item.is-open .faq-q .ico{transform:rotate(90deg);background:var(--cta);color:#fff;}
.faq-a{max-height:0;overflow:hidden;transition:max-height var(--t-mid) var(--ease);}
.faq-a p{padding:0 44px 22px 0;color:var(--muted);margin:0;font-size:.9375rem;}
/* CTA 条 */
.cta-bar{
  background:linear-gradient(180deg,var(--brand-ink),var(--brand-ink-deep));
  color:var(--text-inv);padding:56px 0;
}
.cta-bar__inner{display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;}
.cta-bar h2{color:#fff;font-size:clamp(1.4rem,2.2vw,2rem);margin-bottom:8px;}
.cta-bar p{color:rgba(242,245,243,.78);margin:0;font-size:.9375rem;}
.cta-bar__actions{display:flex;gap:12px;flex-wrap:wrap;}
/* 页脚 */
.site-footer{
  background:linear-gradient(180deg,var(--brand-ink),var(--brand-ink-deep));
  color:rgba(242,245,243,.72);padding:64px 0 28px;font-size:.875rem;
}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px;}
.site-footer h4{color:#fff;font-size:.9375rem;margin-bottom:14px;font-weight:700;}
.site-footer p{color:rgba(242,245,243,.72);margin:14px 0 0;line-height:1.8;}
.site-footer .logo{font-size:1rem;margin-bottom:6px;}
.foot-list{display:flex;flex-direction:column;gap:10px;}
.foot-list a{color:rgba(242,245,243,.72);}
.foot-list a:hover{color:#fff;}
.qr{
  margin-top:16px;width:104px;height:104px;border-radius:12px;
  border:1px dashed rgba(242,245,243,.3);display:flex;align-items:center;justify-content:center;
  text-align:center;font-size:.75rem;line-height:1.5;color:rgba(242,245,243,.6);padding:8px;
}
.foot-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(242,245,243,.12);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:.8125rem;
  color:rgba(242,245,243,.55);
}
/* 入场动画 */
.reveal{opacity:0;transform:translateY(16px);transition:opacity 520ms var(--ease),transform 520ms var(--ease);}
.reveal.is-in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
  .reveal{opacity:1;transform:none;}
}
/* 响应式 */
@media screen and (max-width:1023px){
  :root{--sec-y:80px;}
  .doc-grid{grid-template-columns:1fr;gap:0;}
  .side-toc{position:static;margin-bottom:34px;padding-bottom:22px;border-bottom:1px solid var(--line);}
  .side-toc nav{flex-direction:row;overflow-x:auto;border-left:0;gap:8px;}
  .side-toc a{border-left:0;border-bottom:2px solid transparent;padding:8px 4px;white-space:nowrap;}
  .side-toc a.is-current{border-bottom-color:var(--cta);}
  .side-side-card{display:none;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media screen and (max-width:767px){
  .nav-main,.header-cta{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-inner{min-height:64px;}
  .site-header.is-scrolled .header-inner{min-height:58px;}
  .split{grid-template-columns:1fr;gap:18px;}
  .split--rev .split__media{order:0;}
  .metric-grid{grid-template-columns:1fr;}
  .cta-bar__inner{align-items:flex-start;flex-direction:column;}
  .cta-bar__actions{width:100%;}
  .cta-bar__actions .btn{flex:1 1 auto;}
}
@media screen and (max-width:519px){
  :root{--sec-y:60px;--gutter:16px;}
  body{font-size:.95rem;line-height:1.7;}
  .page-head h1{font-size:clamp(1.75rem,8vw,2.4rem);}
  .foot-grid{grid-template-columns:1fr;}
  .steps li{padding-left:50px;}
  .faq-q{font-size:1rem;padding:18px 0;}
  .faq-a p{padding-right:0;}
  .logos,.split__media{aspect-ratio:16/10;}
}

/* roulang page: article */
:root{
  --brand-ink:#0E2A22;
  --brand-ink-deep:#0B1A15;
  --brand:#146B4E;
  --cta:#FF5A1F;
  --cta-dark:#E84A11;
  --accent:#16C79A;
  --bg:#F7F6F3;
  --card:#FFFFFF;
  --line:#E7E4DD;
  --text:#222826;
  --muted:#6B7370;
  --text-inv:#F2F5F3;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-input:10px;
  --radius-pill:999px;
  --sh-1:0 1px 2px rgba(11,26,21,.06);
  --sh-2:0 18px 40px -18px rgba(11,26,21,.28);
  --sh-3:0 24px 60px -24px rgba(11,26,21,.36);
  --ease:cubic-bezier(.22,.61,.36,1);
  --t-fast:160ms;
  --t-base:240ms;
  --container:1200px;
  --gutter:24px;
  --sect:104px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"Noto Sans SC","HarmonyOS Sans","PingFang SC","Microsoft YaHei",sans-serif;
  font-size:1rem;
  line-height:1.75;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
input,textarea,select{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--cta);outline-offset:2px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 var(--gutter)}
.section{padding:var(--sect) 0}
.section--tight{padding:72px 0}
.section--dark{background:linear-gradient(180deg,var(--brand-ink) 0%,var(--brand-ink-deep) 100%);color:var(--text-inv)}
.section--white{background:var(--card)}
h1,h2,h3,h4{line-height:1.2}
.h1{font-size:clamp(2.4rem,5vw,4rem);font-weight:900;letter-spacing:-.03em;line-height:1.08}
.h2{font-size:clamp(1.6rem,2.6vw,2.4rem);font-weight:800;letter-spacing:-.02em}
.h3{font-size:1.15rem;font-weight:700;line-height:1.4}
.lede{font-size:1.0625rem;color:var(--muted);line-height:1.8}
.section--dark .lede{color:rgba(242,245,243,.78)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:.8125rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;
  color:var(--brand)
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--cta);border-radius:2px}
.section--dark .eyebrow{color:var(--accent)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px;flex-wrap:wrap}
.section-head p{max-width:560px}
.link-more{color:var(--brand);font-weight:700;position:relative;display:inline-flex;align-items:center;gap:6px}
.link-more::after{content:"";position:absolute;left:0;bottom:-3px;height:1.5px;width:0;background:var(--cta);transition:width var(--t-base) var(--ease)}
.link-more:hover::after{width:100%}
.link-more i{transition:transform var(--t-base) var(--ease)}
.link-more:hover i{transform:translateX(4px)}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 16px;border-radius:var(--radius-btn);
  font-weight:700;font-size:.9375rem;white-space:nowrap;
  transition:transform var(--t-fast) var(--ease),box-shadow var(--t-base) var(--ease),background-color var(--t-fast) var(--ease),color var(--t-fast) var(--ease),border-color var(--t-fast) var(--ease);
}
.btn-lg{height:52px;padding:0 24px;font-size:1rem}
.btn-sm{height:36px;padding:0 12px;font-size:.875rem}
.btn-primary{background:var(--cta);color:#fff}
.btn-primary:hover{background:var(--cta-dark);transform:translateY(-2px);box-shadow:0 14px 26px -12px rgba(255,90,31,.75)}
.btn-secondary{background:transparent;color:var(--brand);border:1px solid var(--brand)}
.btn-secondary:hover{background:var(--brand);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn-ghost{background:transparent;color:var(--text-inv);border:1px solid rgba(242,245,243,.42)}
.btn-ghost:hover{border-color:#fff;background:rgba(242,245,243,.1);transform:translateY(-2px)}
.btn:active{transform:translateY(1px)}
.btn:disabled{opacity:.4;transform:none;cursor:not-allowed}
.btn-row{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- Header / Nav ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(14,42,34,.96);
  backdrop-filter:blur(8px);
  transition:height var(--t-base) var(--ease),box-shadow var(--t-base) var(--ease);
}
.site-header.is-scrolled{box-shadow:0 10px 30px -14px rgba(11,26,21,.7)}
.header-inner{display:flex;align-items:center;gap:24px;height:72px;transition:height var(--t-base) var(--ease)}
.site-header.is-scrolled .header-inner{height:60px}
.logo{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:1.125rem;color:var(--text-inv);letter-spacing:-.01em}
.logo__mark{
  width:34px;height:34px;border-radius:9px;background:var(--cta);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;font-size:1rem;font-weight:900;
}
.logo__sub{color:var(--accent);font-weight:700;margin-left:2px}
.nav-main{display:flex;align-items:center;gap:26px;margin-left:auto}
.nav-main a{
  position:relative;color:var(--text-inv);font-size:.9375rem;font-weight:500;
  padding:6px 0;transition:color var(--t-fast) var(--ease);
}
.nav-main a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--cta);border-radius:2px;
  transition:width var(--t-base) var(--ease);
}
.nav-main a:hover{color:var(--cta)}
.nav-main a:hover::after{width:100%}
.nav-main a.is-active{color:#fff}
.nav-main a.is-active::after{width:100%}
.header-cta{display:flex;align-items:center;gap:10px;margin-left:8px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--radius-btn);
  border:1px solid rgba(242,245,243,.4);color:var(--text-inv);
  align-items:center;justify-content:center;font-size:1.05rem;
}
.nav-toggle:hover{border-color:#fff;background:rgba(242,245,243,.1)}
.drawer{
  position:fixed;inset:0;z-index:80;background:rgba(14,42,34,.98);
  transform:translateX(100%);transition:transform var(--t-base) var(--ease);
  display:flex;flex-direction:column;padding:24px;
}
.drawer.is-open{transform:translateX(0)}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:32px}
.drawer-close{width:44px;height:44px;border-radius:var(--radius-btn);border:1px solid rgba(242,245,243,.4);color:var(--text-inv);display:flex;align-items:center;justify-content:center}
.drawer-nav{display:flex;flex-direction:column;gap:4px}
.drawer-nav a{color:var(--text-inv);font-size:1.125rem;font-weight:600;padding:14px 4px;border-bottom:1px solid rgba(242,245,243,.12)}
.drawer-nav a:hover{color:var(--cta)}
.drawer-foot{margin-top:auto;display:flex;flex-direction:column;gap:12px;padding-top:24px}

/* ---------- Breadcrumb ---------- */
.crumb{background:var(--card);border-bottom:1px solid var(--line)}
.crumb-inner{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:.875rem;color:var(--muted);padding:16px 0}
.crumb a{color:var(--brand);position:relative}
.crumb a::after{content:"";position:absolute;left:0;bottom:-2px;height:1.5px;width:0;background:var(--cta);transition:width var(--t-base) var(--ease)}
.crumb a:hover::after{width:100%}
.crumb .sep{color:#C6C2B8}
.crumb .now{color:var(--muted)}

/* ---------- Article head ---------- */
.article-head{padding:56px 0 32px;background:var(--card)}
.article-head .inner{max-width:860px}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  border-radius:var(--radius-pill);padding:5px 14px;font-size:.8125rem;font-weight:700;
  background:rgba(20,107,78,.1);color:var(--brand);
}
.badge--cta{background:var(--cta);color:#fff}
.article-head h1{font-size:clamp(1.75rem,3.2vw,2.4rem);font-weight:900;letter-spacing:-.025em;line-height:1.24;margin:18px 0 16px}
.meta-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:.875rem;color:var(--muted)}
.meta-row .dot{width:1px;height:12px;background:var(--line)}
.head-rule{height:1px;background:var(--line);margin-top:28px}

/* ---------- Article layout ---------- */
.article-wrap{display:grid;grid-template-columns:minmax(0,1fr) 220px;gap:48px;align-items:start;padding:56px 0 var(--sect)}
.article-body{max-width:760px;font-size:1rem;line-height:1.85}
.article-body > * + *{margin-top:20px}
.article-body h2{
  position:relative;
  font-size:clamp(1.35rem,2.2vw,1.75rem);font-weight:800;letter-spacing:-.02em;
  padding-left:16px;margin-top:52px;
}
.article-body h2::before{content:"";position:absolute;left:0;top:.18em;width:4px;height:1.05em;background:var(--cta);border-radius:2px}
.article-body h3{font-size:1.15rem;font-weight:700;margin-top:34px}
.article-body p{color:#2C3331}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
.article-body a:hover{color:var(--cta)}
.article-body strong{font-weight:800;color:var(--brand-ink)}
.article-body ul,.article-body ol{padding-left:0;display:flex;flex-direction:column;gap:10px}
.article-body ul li{position:relative;padding-left:24px}
.article-body ul li::before{content:"";position:absolute;left:6px;top:.72em;width:7px;height:7px;border-radius:50%;background:var(--accent)}
.article-body ol{counter-reset:li}
.article-body ol li{position:relative;padding-left:34px;counter-increment:li}
.article-body ol li::before{
  content:counter(li);
  position:absolute;left:0;top:.15em;width:22px;height:22px;border-radius:6px;
  background:rgba(20,107,78,.1);color:var(--brand);font-size:.75rem;font-weight:800;
  display:flex;align-items:center;justify-content:center;
}
.article-body blockquote{
  background:rgba(20,107,78,.06);border-left:4px solid var(--brand);
  border-radius:0 12px 12px 0;padding:18px 22px;color:#2C3331;
}
.article-body img{border-radius:12px;width:100%;height:auto}
.article-body figcaption{text-align:center;font-size:.875rem;color:var(--muted);margin-top:10px}
.article-body .table-scroll{overflow-x:auto;border-radius:12px;background:var(--card);box-shadow:var(--sh-1)}
.article-body table{width:100%;border-collapse:collapse;font-size:.9375rem;min-width:520px}
.article-body table th,.article-body table td{border:1px solid var(--line);padding:12px 16px;text-align:left}
.article-body table th{background:rgba(20,107,78,.07);font-weight:700;color:var(--brand-ink)}
.article-body table tbody tr:nth-child(even){background:#FBFAF8}
.article-body hr{border:0;height:1px;background:var(--line);margin:40px 0}

/* ---------- Side rail ---------- */
.rail{position:sticky;top:96px;display:flex;flex-direction:column;gap:16px}
.rail-card{background:var(--card);border-radius:var(--radius-card);box-shadow:var(--sh-1);padding:20px}
.rail-card h4{font-size:.9375rem;font-weight:800;margin-bottom:12px;color:var(--brand-ink)}
.rail-list{display:flex;flex-direction:column;gap:10px;font-size:.875rem}
.rail-list a{color:var(--muted);position:relative;padding-left:14px;line-height:1.6}
.rail-list a::before{content:"";position:absolute;left:0;top:.6em;width:5px;height:5px;border-radius:50%;background:var(--accent)}
.rail-list a:hover{color:var(--brand)}
.rail-cta{background:linear-gradient(180deg,var(--brand-ink) 0%,var(--brand-ink-deep) 100%);color:var(--text-inv)}
.rail-cta h4{color:#fff}
.rail-cta p{font-size:.875rem;color:rgba(242,245,243,.78);margin-bottom:14px}

/* ---------- Empty ---------- */
.empty{
  background:var(--card);border-radius:var(--radius-card);box-shadow:var(--sh-1);
  padding:64px 32px;text-align:center;max-width:760px;
}
.empty i{font-size:2rem;color:var(--brand);margin-bottom:16px;display:block}
.empty h2{font-size:1.25rem;font-weight:800;margin-bottom:8px}
.empty p{color:var(--muted);margin-bottom:22px}

/* ---------- Tags / prevnext ---------- */
.tag-row{display:flex;gap:8px;flex-wrap:wrap;margin-top:48px;padding-top:28px;border-top:1px solid var(--line)}
.tag{background:rgba(20,107,78,.1);color:var(--brand);border-radius:var(--radius-pill);padding:6px 14px;font-size:.8125rem;font-weight:700}
.pager{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:36px}
.pager a{
  background:var(--card);border-radius:var(--radius-card);box-shadow:var(--sh-1);
  padding:20px 22px;transition:transform var(--t-base) var(--ease),box-shadow var(--t-base) var(--ease);
}
.pager a:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.pager .pager-label{font-size:.8125rem;color:var(--muted);display:block;margin-bottom:6px}
.pager .pager-title{
  font-weight:700;color:var(--brand-ink);line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.pager .right{text-align:right}
.back-row{margin-top:32px}

/* ---------- Related (CMS) ---------- */
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  background:var(--card);border-radius:var(--radius-card);box-shadow:var(--sh-1);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform var(--t-base) var(--ease),box-shadow var(--t-base) var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.card-media{aspect-ratio:16/9;overflow:hidden;background:linear-gradient(135deg,#0E2A22,#146B4E)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform var(--t-base) var(--ease)}
.card:hover .card-media img{transform:scale(1.04)}
.card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-title{
  font-size:1.0625rem;font-weight:700;line-height:1.5;color:var(--brand-ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-text{
  font-size:.875rem;color:var(--muted);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-meta{display:flex;align-items:center;justify-content:space-between;font-size:.8125rem;color:var(--muted);margin-top:auto;padding-top:6px}
.card-meta i{transition:transform var(--t-base) var(--ease)}
.card:hover .card-meta i{transform:translateX(4px);color:var(--cta)}

/* ---------- CTA bar ---------- */
.cta-bar{
  background:linear-gradient(180deg,var(--brand-ink) 0%,var(--brand-ink-deep) 100%);
  color:var(--text-inv);border-radius:var(--radius-card);
  padding:44px 48px;display:flex;align-items:center;justify-content:space-between;gap:28px;
}
.cta-bar h2{font-size:clamp(1.4rem,2.2vw,1.9rem);font-weight:800;letter-spacing:-.02em}
.cta-bar p{color:rgba(242,245,243,.75);margin-top:8px;font-size:.9375rem}

/* ---------- Footer ---------- */
.site-footer{background:linear-gradient(180deg,var(--brand-ink) 0%,var(--brand-ink-deep) 100%);color:var(--text-inv);padding:72px 0 28px;font-size:.875rem}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px}
.foot-brand p{color:rgba(242,245,243,.72);line-height:1.85;margin-top:16px;max-width:340px}
.foot-grid h4{font-size:.9375rem;font-weight:800;color:#fff;margin-bottom:16px}
.foot-list{display:flex;flex-direction:column;gap:10px}
.foot-list a{color:rgba(242,245,243,.72);transition:color var(--t-fast) var(--ease)}
.foot-list a:hover{color:#fff}
.qr{margin-top:18px;width:112px;height:112px;border-radius:12px;border:1px dashed rgba(242,245,243,.32);display:flex;align-items:center;justify-content:center;text-align:center;font-size:.75rem;color:rgba(242,245,243,.6);line-height:1.5}
.foot-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(242,245,243,.14);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  color:rgba(242,245,243,.6);font-size:.8125rem;
}

/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity 520ms var(--ease),transform 520ms var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  :root{--sect:80px}
  .nav-main{display:none}
  .header-cta{display:none}
  .nav-toggle{display:flex;margin-left:auto}
  .article-wrap{grid-template-columns:1fr;gap:40px}
  .rail{position:static;flex-direction:row;flex-wrap:wrap}
  .rail-card{flex:1 1 260px}
  .foot-grid{grid-template-columns:1fr 1fr}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:768px){
  .cta-bar{flex-direction:column;align-items:flex-start;padding:32px 24px}
  .pager{grid-template-columns:1fr}
  .pager .right{text-align:left}
}
@media (max-width:640px){
  :root{--gutter:16px;--sect:60px}
  body{font-size:.95rem;line-height:1.7}
  .article-body{font-size:.95rem;line-height:1.7}
  .related-grid{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr;gap:28px}
  .article-head{padding:36px 0 24px}
  .article-wrap{padding:36px 0 60px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none!important;animation:none!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category2 */
:root{
  --brand-ink:#0E2A22;
  --brand-ink-deep:#0B1A15;
  --brand:#146B4E;
  --cta:#FF5A1F;
  --cta-dark:#E64A12;
  --accent:#16C79A;
  --bg:#F7F6F3;
  --card:#FFFFFF;
  --line:#E7E4DD;
  --text:#222826;
  --muted:#6B7370;
  --text-inv:#F2F5F3;

  --r-card:16px;
  --r-btn:10px;
  --r-input:10px;
  --r-badge:999px;

  --sh-1:0 1px 2px rgba(11,26,21,.06);
  --sh-2:0 18px 40px -18px rgba(11,26,21,.28);
  --sh-3:0 24px 60px -24px rgba(11,26,21,.36);

  --sec-lg:104px;
  --sec-md:80px;
  --sec-sm:60px;

  --ease:cubic-bezier(.22,.61,.36,1);
  --t-fast:160ms;
  --t-mid:240ms;

  --font-cn:"Noto Sans SC","HarmonyOS Sans","PingFang SC","Microsoft YaHei",sans-serif;
}

/* ============ 基础 reset ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:1rem;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
a:hover{color:var(--cta);}
button,input,textarea,select{font:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus{outline:none;}
:focus-visible{outline:2px solid var(--cta);outline-offset:2px;border-radius:4px;}

/* Foundation 覆盖 */
a:not(.btn):not(.logo){color:inherit;}
button, .button, [type="submit"]{background-image:none;box-shadow:none;}
.foundation-default, table{border-collapse:collapse;}

/* ============ 容器与通用 ============ */
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
.sec{padding:var(--sec-lg) 0;}
.sec-tight{padding:calc(var(--sec-lg) * .72) 0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:.8125rem;font-weight:700;letter-spacing:.08em;
  color:var(--brand);text-transform:uppercase;
  margin-bottom:16px;
}
.eyebrow::before{
  content:"";width:22px;height:2px;background:var(--cta);border-radius:2px;
}
.sec-head{max-width:760px;margin-bottom:48px;}
.sec-head h2{
  font-size:clamp(1.6rem,2.6vw,2.4rem);
  line-height:1.2;font-weight:800;letter-spacing:-.02em;
  color:var(--brand-ink);
}
.sec-head p{margin-top:16px;color:var(--muted);font-size:1rem;}
.sec-head--inv h2{color:var(--text-inv);}
.sec-head--inv p{color:rgba(242,245,243,.72);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);
  font-weight:700;letter-spacing:.01em;
  transition:transform var(--t-fast) var(--ease), box-shadow var(--t-fast) var(--ease),
             background-color var(--t-fast) var(--ease), color var(--t-fast) var(--ease),
             border-color var(--t-fast) var(--ease);
  white-space:nowrap;
}
.btn-sm{height:36px;padding:0 16px;font-size:.875rem;}
.btn-md{height:44px;padding:0 20px;font-size:.9375rem;}
.btn-lg{height:52px;padding:0 26px;font-size:1rem;}
.btn-primary{background:var(--cta);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--cta-dark);color:#fff;transform:translateY(-2px);box-shadow:0 14px 26px -12px rgba(255,90,31,.62);}
.btn-primary:active{transform:translateY(1px);}
.btn-outline{background:transparent;color:var(--brand);border:2px solid var(--brand);}
.btn-outline:hover{background:var(--brand);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn-ghost{background:transparent;color:var(--text-inv);border:2px solid rgba(242,245,243,.55);}
.btn-ghost:hover{border-color:var(--cta);color:var(--cta);transform:translateY(-2px);}
.btn-light{background:#fff;color:var(--brand-ink);}
.btn-light:hover{background:var(--cta);color:#fff;transform:translateY(-2px);box-shadow:0 14px 26px -12px rgba(255,90,31,.6);}
.btn[disabled]{opacity:.4;pointer-events:none;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-weight:700;color:var(--brand);
  position:relative;
}
.link-arrow::after{
  content:"";position:absolute;left:0;bottom:-3px;height:2px;width:0;
  background:var(--cta);transition:width var(--t-mid) var(--ease);
}
.link-arrow:hover{color:var(--cta);}
.link-arrow:hover::after{width:100%;}
.link-arrow i{transition:transform var(--t-mid) var(--ease);}
.link-arrow:hover i{transform:translateX(4px);}

/* ============ 徽章 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--r-badge);
  font-size:.8125rem;font-weight:700;
  background:rgba(20,107,78,.1);color:var(--brand);
}
.badge--cta{background:var(--cta);color:#fff;}
.badge--line{background:transparent;border:1px solid var(--line);color:var(--muted);font-weight:600;}
.badge--inv{background:rgba(242,245,243,.14);color:var(--text-inv);}

/* ============ 顶部导航 ============ */
.site-head{
  position:sticky;top:0;z-index:80;
  background:var(--brand-ink);
  border-bottom:1px solid rgba(242,245,243,.08);
  transition:box-shadow var(--t-mid) var(--ease), background-color var(--t-mid) var(--ease);
}
.head-inner{
  display:flex;align-items:center;gap:24px;
  min-height:72px;
  transition:min-height var(--t-mid) var(--ease);
}
.site-head.is-scrolled{box-shadow:0 16px 34px -22px rgba(11,26,21,.85);}
.site-head.is-scrolled .head-inner{min-height:60px;}

.logo{display:inline-flex;align-items:center;gap:10px;font-weight:800;color:var(--text-inv);}
.logo:hover{color:var(--text-inv);}
.logo__mark{
  width:36px;height:36px;flex:0 0 36px;
  display:grid;place-items:center;
  border-radius:11px;background:var(--brand);
  color:#fff;font-size:1.05rem;font-weight:900;
}
.logo__text{font-size:1.0625rem;letter-spacing:.01em;display:inline-flex;align-items:baseline;gap:2px;}
.logo__sub{
  font-size:.75rem;font-weight:600;letter-spacing:.05em;
  color:var(--accent);padding-left:4px;
}

.nav-main{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-main a{
  position:relative;display:inline-block;
  padding:8px 12px;border-radius:8px;
  font-size:.9375rem;font-weight:600;color:rgba(242,245,243,.82);
  transition:color var(--t-fast) var(--ease), background-color var(--t-fast) var(--ease);
}
.nav-main a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--cta);border-radius:2px;
  transform:scaleX(0);transform-origin:left;
  transition:transform var(--t-mid) var(--ease);
}
.nav-main a:hover{color:var(--cta);background:rgba(242,245,243,.05);}
.nav-main a:hover::after{transform:scaleX(1);}
.nav-main a.is-active{color:#fff;}
.nav-main a.is-active::after{transform:scaleX(1);}

.head-cta{display:flex;align-items:center;gap:10px;}
.burger{
  display:none;width:44px;height:44px;border-radius:var(--r-btn);
  border:1px solid rgba(242,245,243,.28);color:var(--text-inv);
  align-items:center;justify-content:center;font-size:1.1rem;
  transition:border-color var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}
.burger:hover{border-color:var(--cta);color:var(--cta);}

/* 移动抽屉 */
.drawer{
  position:fixed;inset:0;z-index:90;
  background:var(--brand-ink);
  display:flex;flex-direction:column;
  padding:20px 24px 28px;
  transform:translateY(-100%);
  opacity:0;visibility:hidden;
  transition:transform var(--t-mid) var(--ease), opacity var(--t-mid) var(--ease), visibility var(--t-mid);
}
.drawer.is-open{transform:translateY(0);opacity:1;visibility:visible;}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:28px;}
.drawer-close{
  width:44px;height:44px;border-radius:var(--r-btn);
  border:1px solid rgba(242,245,243,.28);color:var(--text-inv);font-size:1.1rem;
  display:grid;place-items:center;
}
.drawer-close:hover{border-color:var(--cta);color:var(--cta);}
.drawer-nav{display:flex;flex-direction:column;gap:4px;}
.drawer-nav a{
  padding:14px 4px;border-bottom:1px solid rgba(242,245,243,.09);
  color:rgba(242,245,243,.9);font-size:1.0625rem;font-weight:600;
}
.drawer-nav a.is-active{color:var(--cta);}
.drawer-nav a:hover{color:var(--cta);}
.drawer-cta{margin-top:auto;display:flex;flex-direction:column;gap:12px;padding-top:24px;}
.drawer-cta .btn{width:100%;}

/* ============ category2 Hero ============ */
.hero-c2{
  position:relative;overflow:hidden;
  background:linear-gradient(160deg,var(--brand-ink) 0%,var(--brand-ink-deep) 100%);
  color:var(--text-inv);
  padding:88px 0 72px;
}
.hero-c2::before{
  content:"";position:absolute;left:-160px;top:-140px;
  width:560px;height:560px;border-radius:50%;
  border:1px solid rgba(22,199,154,.16);
  pointer-events:none;
}
.hero-c2::after{
  content:"";position:absolute;right:-120px;bottom:-200px;
  width:520px;height:520px;border-radius:50%;
  border:1px solid rgba(242,245,243,.08);
  pointer-events:none;
}
.hero-c2__grid{
  position:relative;z-index:1;
  display:grid;grid-template-columns:1.05fr .95fr;
  gap:56px;align-items:center;
}
.hero-c2 h1{
  font-size:clamp(2.6rem,4.4vw,3.6rem);
  line-height:1.08;font-weight:900;letter-spacing:-.03em;
  color:#fff;margin-bottom:20px;
}
.hero-c2 h1 em{color:var(--cta);font-style:normal;}
.hero-c2__sub{
  font-size:1.0625rem;line-height:1.8;color:rgba(242,245,243,.82);
  max-width:560px;margin-bottom:28px;
}
.hero-c2__btns{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:40px;}
.hero-stats{
  display:grid;grid-template-columns:repeat(3,1fr);
  border-top:1px solid rgba(242,245,243,.14);
  padding-top:24px;
}
.hero-stats div{
  padding-right:20px;border-right:1px solid rgba(242,245,243,.14);
}
.hero-stats div:last-child{border-right:0;}
.hero-stats strong{
  display:block;font-size:1.5rem;font-weight:900;color:#fff;letter-spacing:-.02em;
}
.hero-stats span{font-size:.8125rem;color:rgba(242,245,243,.66);}
.hero-c2__media{
  position:relative;border-radius:20px;overflow:hidden;
  box-shadow:var(--sh-3);
  aspect-ratio:4/3.2;
}
.hero-c2__media img{width:100%;height:100%;object-fit:cover;}
.hero-c2__tag{
  position:absolute;left:18px;bottom:18px;
  background:rgba(11,26,21,.78);
  border:1px solid rgba(242,245,243,.16);
  border-radius:var(--r-badge);
  padding:8px 16px;font-size:.8125rem;color:var(--text-inv);
  display:inline-flex;align-items:center;gap:8px;
  backdrop-filter:blur(2px);
}
.dot-live{
  width:8px;height:8px;border-radius:50%;background:var(--accent);
  box-shadow:0 0 0 4px rgba(22,199,154,.18);
}

/* ============ 分屏区块 ============ */
.split{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
}
.split__media{
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-2);
  aspect-ratio:16/11;background:linear-gradient(140deg,rgba(14,42,34,.9),var(--brand));
}
.split__media img{width:100%;height:100%;object-fit:cover;}
.split h2{
  font-size:clamp(1.6rem,2.6vw,2.4rem);line-height:1.2;font-weight:800;
  letter-spacing:-.02em;color:var(--brand-ink);margin-bottom:18px;
}
.split p{color:var(--muted);margin-bottom:22px;}
.check-list{display:flex;flex-direction:column;gap:14px;}
.check-list li{display:flex;gap:12px;align-items:flex-start;font-size:.9688rem;}
.check-list i{
  color:var(--brand);font-size:1rem;margin-top:5px;flex:0 0 auto;
}
.check-list strong{color:var(--brand-ink);}

/* ============ 时间线 ============ */
.band-data{
  background:#fff;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.timeline{position:relative;max-width:920px;margin:0 auto;padding-left:0;}
.timeline::before{
  content:"";position:absolute;left:23px;top:12px;bottom:12px;width:2px;
  background:linear-gradient(180deg,var(--cta) 0%,rgba(22,199,154,.5) 60%,rgba(231,228,221,.9) 100%);
}
.tl-item{position:relative;padding:0 0 40px 76px;}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:attr(data-step);
  position:absolute;left:0;top:0;
  width:48px;height:48px;border-radius:14px;
  display:grid;place-items:center;
  background:var(--cta);color:#fff;
  font-weight:900;font-size:1rem;
  box-shadow:0 12px 24px -14px rgba(255,90,31,.8);
}
.tl-item h3{
  font-size:1.15rem;font-weight:700;line-height:1.4;
  color:var(--brand-ink);margin-bottom:8px;
}
.tl-item p{color:var(--muted);font-size:.9688rem;max-width:640px;}
.tl-item .badge{margin-top:14px;}

/* ============ 2x2 信息卡 ============ */
.card-grid-2{
  display:grid;grid-template-columns:repeat(2,1fr);
  gap:40px;
}
.info-card{
  background:var(--card);border-radius:var(--r-card);
  padding:36px;box-shadow:var(--sh-1);
  transition:transform var(--t-mid) var(--ease), box-shadow var(--t-mid) var(--ease);
}
.info-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.info-card__icon{
  width:52px;height:52px;border-radius:14px;
  display:grid;place-items:center;margin-bottom:22px;
  background:rgba(20,107,78,.1);color:var(--brand);font-size:1.25rem;
}
.info-card:nth-child(2) .info-card__icon{background:rgba(255,90,31,.12);color:var(--cta);}
.info-card:nth-child(3) .info-card__icon{background:rgba(22,199,154,.14);color:#0E8A6B;}
.info-card h3{
  font-size:1.15rem;font-weight:700;line-height:1.4;
  color:var(--brand-ink);margin-bottom:12px;
}
.info-card p{color:var(--muted);font-size:.9688rem;margin-bottom:18px;}
.info-card ul{display:flex;flex-direction:column;gap:9px;}
.info-card ul li{
  font-size:.875rem;color:var(--text);
  padding-left:16px;position:relative;
}
.info-card ul li::before{
  content:"";position:absolute;left:0;top:10px;
  width:6px;height:6px;border-radius:50%;background:var(--accent);
}

/* ============ 数据说明条 ============ */
.metric-strip{
  display:grid;grid-template-columns:repeat(4,1fr);
  background:var(--brand-ink);border-radius:var(--r-card);
  overflow:hidden;color:var(--text-inv);
}
.metric-strip div{
  padding:32px 28px;
  border-right:1px solid rgba(242,245,243,.1);
}
.metric-strip div:last-child{border-right:0;}
.metric-strip strong{
  display:block;font-size:1.875rem;font-weight:900;letter-spacing:-.02em;color:#fff;
}
.metric-strip span{font-size:.875rem;color:rgba(242,245,243,.68);}

/* ============ FAQ ============ */
.faq-grid{
  display:grid;grid-template-columns:repeat(2,1fr);gap:20px;
}
.faq-item{
  background:var(--card);border-radius:var(--r-card);
  padding:0 28px;box-shadow:var(--sh-1);
  transition:box-shadow var(--t-mid) var(--ease), transform var(--t-mid) var(--ease);
}
.faq-item:hover{box-shadow:var(--sh-2);transform:translateY(-3px);}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:flex-start;gap:14px;justify-content:space-between;
  padding:24px 0;font-weight:700;color:var(--brand-ink);
  font-size:1.0325rem;line-height:1.5;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary i{
  flex:0 0 auto;margin-top:4px;color:var(--muted);
  transition:transform var(--t-mid) var(--ease), color var(--t-mid) var(--ease);
}
.faq-item[open] summary{color:var(--brand);}
.faq-item[open] summary i{transform:rotate(90deg);color:var(--cta);}
.faq-item .faq-body{
  padding:0 0 26px;color:var(--muted);font-size:.9375rem;
  border-top:1px solid var(--line);padding-top:18px;
}

/* ============ CTA 条 ============ */
.cta-band{
  background:linear-gradient(140deg,var(--brand-ink) 0%,var(--brand-ink-deep) 100%);
  color:var(--text-inv);
  padding:64px 0;
}
.cta-band__inner{
  display:flex;align-items:center;justify-content:space-between;gap:32px;
}
.cta-band h2{
  font-size:clamp(1.5rem,2.4vw,2.1rem);font-weight:800;letter-spacing:-.02em;
  color:#fff;line-height:1.25;
}
.cta-band p{margin-top:10px;color:rgba(242,245,243,.7);font-size:.9688rem;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--brand-ink);
  color:rgba(242,245,243,.72);
  padding:72px 0 28px;
  font-size:.875rem;
}
.foot-grid{
  display:grid;grid-template-columns:1.55fr 1fr 1fr 1fr;gap:40px;
  padding-bottom:44px;border-bottom:1px solid rgba(242,245,243,.1);
}
.site-footer .logo{color:#fff;margin-bottom:16px;}
.foot-brand p{line-height:1.8;max-width:360px;color:rgba(242,245,243,.62);}
.site-footer h4{
  color:#fff;font-size:.9375rem;font-weight:700;margin-bottom:18px;
}
.foot-list{display:flex;flex-direction:column;gap:11px;}
.foot-list a{color:rgba(242,245,243,.68);transition:color var(--t-fast) var(--ease), padding-left var(--t-fast) var(--ease);}
.foot-list a:hover{color:#fff;padding-left:4px;}
.qr{
  margin-top:18px;width:96px;height:96px;border-radius:12px;
  border:1px dashed rgba(242,245,243,.3);
  display:grid;place-items:center;text-align:center;
  font-size:.75rem;line-height:1.5;color:rgba(242,245,243,.55);
  padding:8px;
}
.foot-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding-top:22px;font-size:.8125rem;color:rgba(242,245,243,.5);
}

/* ============ 入场动效 ============ */
.reveal{opacity:0;transform:translateY(16px);transition:opacity var(--t-mid) var(--ease), transform var(--t-mid) var(--ease);}
.reveal.is-in{opacity:1;transform:none;}

/* ============ 响应式 ============ */
@media screen and (max-width:1024px){
  :root{--sec-lg:80px;}
  .nav-main{display:none;}
  .head-cta .btn-ghost{display:none;}
  .burger{display:inline-flex;}
  .hero-c2__grid{grid-template-columns:1fr;gap:40px;}
  .hero-c2{padding:64px 0 56px;}
  .hero-c2__media{aspect-ratio:16/10;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .metric-strip{grid-template-columns:repeat(2,1fr);}
  .metric-strip div:nth-child(2){border-right:0;}
  .metric-strip div:nth-child(1),
  .metric-strip div:nth-child(2){border-bottom:1px solid rgba(242,245,243,.1);}
  .split{gap:36px;}
}

@media screen and (max-width:768px){
  :root{--sec-lg:60px;}
  .container{padding:0 16px;}
  body{font-size:.95rem;line-height:1.7;}
  .split{grid-template-columns:1fr;}
  .split__media{aspect-ratio:16/10;}
  .card-grid-2{grid-template-columns:1fr;gap:20px;}
  .faq-grid{grid-template-columns:1fr;}
  .cta-band__inner{flex-direction:column;align-items:flex-start;}
  .cta-band__inner .btn{width:100%;}
  .hero-c2 h1{font-size:clamp(2.1rem,7vw,2.6rem);}
  .hero-stats{grid-template-columns:1fr 1fr;gap:20px 0;}
  .hero-stats div{border-right:0;padding-right:0;}
  .hero-stats div:nth-child(odd){border-right:1px solid rgba(242,245,243,.14);}
  .tl-item{padding-left:64px;}
}

@media screen and (max-width:520px){
  .hero-c2{padding:48px 0 44px;}
  .hero-c2__btns{flex-direction:column;align-items:stretch;}
  .hero-c2__btns .btn{width:100%;}
  .hero-stats{grid-template-columns:1fr;}
  .hero-stats div{border-right:0;}
  .metric-strip{grid-template-columns:1fr;}
  .metric-strip div{border-right:0;border-bottom:1px solid rgba(242,245,243,.1);}
  .info-card{padding:26px 22px;}
  .faq-item{padding:0 20px;}
  .foot-grid{grid-template-columns:1fr;}
  .tl-item{padding-left:60px;}
  .tl-item::before{width:42px;height:42px;font-size:.9375rem;border-radius:12px;}
  .timeline::before{left:20px;}
}

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