/* roulang page: index */
:root{
  --c-brand:#FF6A1F;
  --c-brand-deep:#E8460C;
  --c-pink:#FF2E7E;
  --c-accent:#10D6B4;
  --c-ink:#1B1224;
  --c-ink-2:#4A4256;
  --c-ink-3:#857C93;
  --c-bg:#FFFBF8;
  --c-surface:#FFFFFF;
  --c-surface-warm:#FFF3EC;
  --c-line:#EFE7E2;
  --c-success:#12B76A;
  --c-warn:#F5A524;
  --c-error:#E5484D;
  --grad-brand:linear-gradient(115deg,#FF6A1F 0%,#FF2E7E 100%);
  --grad-soft:linear-gradient(140deg,#FFF3EC 0%,#FFE8F1 100%);
  --r-lg:24px;
  --r-md:16px;
  --r-cta:32px;
  --r-pill:999px;
  --sh-card:0 2px 10px rgba(27,18,36,.06);
  --sh-card-hover:0 18px 40px rgba(27,18,36,.12);
  --sh-btn:0 12px 28px rgba(255,46,126,.32);
  --ease:cubic-bezier(.2,.8,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;line-height:1.85;color:var(--c-ink);background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
h1,h2,h3{letter-spacing:-.01em;text-wrap:balance}
p{text-wrap:pretty}
:focus-visible{outline:3px solid rgba(255,106,31,.35);outline-offset:2px;border-radius:8px}
::selection{background:rgba(255,106,31,.2)}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
@media(max-width:1199px){.container{max-width:1160px}}
@media(max-width:1023px){.container{max-width:960px;padding:0 20px}}
@media(max-width:767px){.container{max-width:720px}}
@media(max-width:479px){.container{padding:0 16px}}

/* ============ 导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(255,255,255,.10);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.18);
  box-shadow:0 8px 24px rgba(27,18,36,.10);
  transition:background .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header .bar{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  height:76px;transition:height .24s var(--ease);
}
.site-header.is-solid{
  background:rgba(255,251,248,.95);
  border-bottom-color:var(--c-line);
  box-shadow:0 6px 20px rgba(27,18,36,.08);
}
.site-header.is-solid .bar{height:64px}
.logo{display:inline-flex;align-items:center;gap:10px;font-size:18px;font-weight:800;color:#fff;white-space:nowrap;transition:color .24s var(--ease)}
.logo-mark{
  width:34px;height:34px;border-radius:11px;background:var(--grad-brand);
  display:grid;place-items:center;color:#fff;font-size:15px;font-weight:800;
  box-shadow:0 6px 16px rgba(255,106,31,.35);flex:0 0 auto;
}
.site-header.is-solid .logo{color:var(--c-ink)}
.nav-links{display:flex;align-items:center;gap:30px}
.nav-links a{
  position:relative;display:inline-block;padding:8px 2px;font-size:15px;font-weight:500;
  color:#fff;transition:color .24s var(--ease);
}
.site-header.is-solid .nav-links a{color:var(--c-ink)}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background:var(--grad-brand);transform:scaleX(0);transform-origin:left;
  transition:transform .24s var(--ease);
}
.nav-links a:hover,.site-header.is-solid .nav-links a:hover{color:var(--c-brand)}
.nav-links a:hover::after,.nav-links a.active::after{transform:scaleX(1)}
.nav-links a.active{font-weight:600}
.nav-actions{display:flex;align-items:center;gap:12px}
.icon-btn{
  width:44px;height:44px;border-radius:var(--r-pill);display:grid;place-items:center;
  color:#fff;transition:background .24s var(--ease),color .24s var(--ease);
}
.site-header.is-solid .icon-btn{color:var(--c-ink)}
.icon-btn:hover{background:rgba(255,106,31,.14);color:var(--c-brand)}
.burger{display:none;width:44px;height:44px;border-radius:12px;place-items:center;color:#fff}
.site-header.is-solid .burger{color:var(--c-ink)}
.burger svg{display:block}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:14px 28px;border-radius:var(--r-pill);
  font-size:16px;font-weight:700;line-height:1;white-space:nowrap;
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),background .3s var(--ease),color .3s var(--ease),filter .3s var(--ease);
}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:0 8px 20px rgba(255,46,126,.22)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--sh-btn);filter:brightness(1.06)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 4px 12px rgba(255,46,126,.24)}
.btn-ghost{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.32);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.24);transform:translateY(-2px)}
.btn-outline{background:#fff;border:1.5px solid var(--c-brand);color:var(--c-brand)}
.btn-outline:hover{background:var(--c-surface-warm);transform:translateY(-2px)}
.btn-light{background:#fff;color:var(--c-brand-deep);box-shadow:0 10px 24px rgba(27,18,36,.16)}
.btn-light:hover{transform:translateY(-2px);box-shadow:0 16px 34px rgba(27,18,36,.22)}
.btn-sm{min-height:42px;padding:11px 22px;font-size:15px}
.btn:disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;
  color:var(--c-brand);transition:color .24s var(--ease);
}
.link-arrow::after{content:"→";transition:transform .24s var(--ease);display:inline-block}
.link-arrow:hover{color:var(--c-brand-deep)}
.link-arrow:hover::after{transform:translateX(2px)}

/* ============ 首屏 ============ */
.hero{position:relative;background:var(--c-ink);color:#fff;padding:150px 0 0;overflow:hidden}
.hero::before,.hero::after{content:"";position:absolute;border-radius:50%;filter:blur(120px);pointer-events:none}
.hero::before{width:620px;height:620px;background:rgba(255,106,31,.18);top:-190px;left:-140px}
.hero::after{width:520px;height:520px;background:rgba(255,46,126,.14);bottom:-180px;right:-100px}
.hero-inner{
  position:relative;z-index:2;display:grid;grid-template-columns:1.06fr .94fr;
  gap:56px;align-items:center;padding-bottom:118px;
}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;padding:7px 16px;border-radius:var(--r-pill);
  font-size:13px;font-weight:600;color:#fff;background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.18);margin-bottom:24px;
}
.hero-tag i{width:7px;height:7px;border-radius:50%;background:var(--c-accent);display:inline-block}
.hero h1{
  font-size:clamp(28px,4.2vw,54px);line-height:1.2;font-weight:800;letter-spacing:-.02em;
}
.hero h1 em{
  font-style:normal;background:var(--grad-brand);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{
  margin-top:22px;font-size:18px;line-height:1.8;color:rgba(255,251,248,.78);max-width:560px;
}
.btn-group{display:flex;flex-wrap:wrap;gap:16px;margin-top:38px}
.badges{display:flex;flex-wrap:wrap;gap:16px;margin-top:48px}
.badge{
  position:relative;min-width:136px;padding:16px 20px;border-radius:16px;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.13);
  transition:transform .32s var(--ease),background .32s var(--ease);
}
.badge::before{
  content:"";position:absolute;inset:0;border-radius:inherit;padding:1px;
  background:var(--grad-brand);opacity:.65;pointer-events:none;
  -webkit-mask:linear-gradient(#fff 0 0) content-box,linear-gradient(#fff 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;
}
.badge:hover{transform:translateY(-3px);background:rgba(255,255,255,.13)}
.badge b{
  display:block;font-size:28px;font-weight:800;line-height:1.2;
  font-variant-numeric:tabular-nums;letter-spacing:-.02em;
}
.badge b span{font-size:14px;font-weight:500;margin-left:2px}
.badge p{margin-top:8px;font-size:12px;line-height:1.6;color:rgba(255,251,248,.68)}
.hero-visual{
  position:relative;border-radius:var(--r-lg);padding:3px;background:var(--grad-brand);
  box-shadow:0 34px 80px rgba(0,0,0,.45);
}
.hero-visual img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:22px;
  background:var(--grad-soft);
}
.hero-visual-pill{
  position:absolute;left:18px;bottom:18px;padding:10px 18px;border-radius:var(--r-pill);
  background:rgba(27,18,36,.72);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  font-size:13px;font-weight:600;color:#fff;border:1px solid rgba(255,255,255,.18);
}
.hero-fade{
  position:relative;z-index:3;height:80px;
  background:linear-gradient(180deg,rgba(255,251,248,0) 0%,var(--c-bg) 100%);
}

/* ============ 板块通用 ============ */
.section{padding:110px 0}
.section-warm{background:var(--c-surface-warm)}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:48px;
}
.section-head h2{font-size:clamp(24px,2.6vw,34px);font-weight:700;line-height:1.3}
.section-head p{margin-top:12px;font-size:16px;color:var(--c-ink-2);max-width:640px}
.section-kicker{
  display:block;font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--c-brand);
  margin-bottom:12px;
}

/* ============ 卖点三连 ============ */
.highlight-wrap{display:grid;grid-template-columns:1.4fr 1fr;gap:24px;align-items:stretch}
.hl-main{
  background:var(--grad-brand);color:#fff;border-radius:var(--r-lg);padding:40px;
  display:flex;flex-direction:column;justify-content:space-between;gap:32px;
  box-shadow:0 24px 60px rgba(255,46,126,.24);
}
.hl-main h3{font-size:26px;font-weight:800;line-height:1.35}
.hl-main p{margin-top:16px;font-size:16px;line-height:1.85;color:rgba(255,255,255,.9);max-width:460px}
.hl-num{
  font-size:44px;font-weight:800;line-height:1;font-variant-numeric:tabular-nums;
  color:rgba(255,255,255,.35);
}
.hl-main .link-arrow{color:#fff;align-self:flex-start}
.hl-main .link-arrow:hover{color:rgba(255,255,255,.75)}
.hl-side{display:flex;flex-direction:column;gap:24px}
.hl-item{
  flex:1;display:flex;gap:18px;align-items:flex-start;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:20px;
  padding:26px;box-shadow:var(--sh-card);
  transition:transform .34s var(--ease),box-shadow .34s var(--ease);
}
.hl-item:hover{transform:translateY(-4px);box-shadow:var(--sh-card-hover)}
.hl-icon{
  width:46px;height:46px;border-radius:14px;flex:0 0 auto;display:grid;place-items:center;
  background:var(--grad-soft);color:var(--c-brand-deep);
}
.hl-item h3{font-size:19px;font-weight:700;line-height:1.4}
.hl-item p{margin-top:8px;font-size:15px;line-height:1.75;color:var(--c-ink-2)}

/* ============ 场景演示 ============ */
.scene{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.scene + .scene{margin-top:80px}
.scene.reverse .scene-media{order:-1}
.scene-media img{
  width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--r-lg);
  box-shadow:0 24px 56px rgba(27,18,36,.14);background:var(--grad-soft);
}
.scene-step{
  display:inline-block;font-size:13px;font-weight:700;color:var(--c-brand-deep);
  background:var(--c-surface-warm);border:1px solid rgba(255,106,31,.2);
  padding:5px 14px;border-radius:var(--r-pill);margin-bottom:18px;
}
.scene h3{font-size:24px;font-weight:700;line-height:1.4}
.point-list{margin-top:20px}
.point-list li{
  position:relative;padding-left:22px;margin-top:12px;font-size:16px;line-height:1.8;color:var(--c-ink-2);
}
.point-list li::before{
  content:"";position:absolute;left:0;top:12px;width:8px;height:8px;border-radius:50%;
  background:var(--grad-brand);
}
.scene .link-arrow{margin-top:24px}

/* ============ 社会认同 ============ */
.quote-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.quote-card{
  position:relative;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-lg);padding:28px;box-shadow:var(--sh-card);
  transition:transform .34s var(--ease),box-shadow .34s var(--ease);
}
.quote-card:hover{transform:translateY(-4px);box-shadow:var(--sh-card-hover)}
.quote-card:nth-child(2){margin-top:32px}
.quote-card.soft{background:var(--grad-soft);border-color:transparent}
.quote-card.bar::before{
  content:"";position:absolute;left:0;top:24px;bottom:24px;width:4px;border-radius:0 4px 4px 0;
  background:var(--grad-brand);
}
.quote-card.bar{padding-left:32px}
.quote-mark{
  font-size:34px;font-weight:800;line-height:1;background:var(--grad-brand);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.quote-card p{margin-top:14px;font-size:16px;line-height:1.85;color:var(--c-ink-2)}
.quote-label{
  display:inline-block;margin-top:18px;font-size:12px;font-weight:600;
  color:var(--c-brand-deep);background:rgba(255,255,255,.7);
  border:1px solid rgba(255,106,31,.2);padding:4px 12px;border-radius:var(--r-pill);
}
.partner-strip{
  display:flex;flex-wrap:wrap;gap:16px 40px;justify-content:center;
  margin-top:56px;padding-top:40px;border-top:1px dashed var(--c-line);
}
.partner-strip span{
  font-size:15px;font-weight:600;color:var(--c-ink-3);opacity:.55;
  transition:opacity .3s var(--ease),color .3s var(--ease);
}
.partner-strip span:hover{opacity:1;color:var(--c-ink)}

/* ============ 内容卡列表 ============ */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.post-card{
  display:flex;flex-direction:column;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-lg);padding:24px;box-shadow:var(--sh-card);
  transition:transform .35s var(--ease),box-shadow .35s var(--ease);
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--sh-card-hover)}
.post-cover{display:block;border-radius:var(--r-md);overflow:hidden;margin-bottom:18px;background:var(--grad-soft)}
.post-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .4s var(--ease)}
.post-card:hover .post-cover img{transform:scale(1.04)}
.tag{
  display:inline-flex;align-items:center;align-self:flex-start;gap:6px;
  padding:5px 12px;border-radius:var(--r-pill);font-size:12px;font-weight:600;
  color:var(--c-brand-deep);background:var(--c-surface-warm);
  border:1px solid rgba(255,106,31,.22);
}
.post-card h3{
  margin:12px 0 10px;font-size:19px;font-weight:700;line-height:1.45;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-card h3 a{transition:color .24s var(--ease)}
.post-card h3 a:hover{color:var(--c-brand)}
.post-card > p{
  font-size:15px;line-height:1.75;color:var(--c-ink-2);margin-bottom:18px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-meta{
  margin-top:auto;padding-top:16px;border-top:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--c-ink-3);
}
.empty-state{
  grid-column:1/-1;display:flex;flex-direction:column;align-items:center;gap:16px;
  padding:64px 24px;text-align:center;background:var(--c-surface);
  border:1px dashed var(--c-line);border-radius:var(--r-lg);
}
.empty-state svg{color:var(--c-ink-3)}
.empty-state p{font-size:15px;color:var(--c-ink-2)}

/* ============ FAQ ============ */
.faq-list{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:20px;overflow:hidden;box-shadow:var(--sh-card);
}
.faq-item + .faq-item{border-top:1px solid var(--c-line)}
.faq-q{
  width:100%;display:flex;align-items:center;gap:16px;min-height:64px;
  padding:16px 24px;text-align:left;font-size:17px;font-weight:600;line-height:1.6;
  transition:background .24s var(--ease);
}
.faq-q:hover{background:var(--c-surface-warm)}
.faq-num{
  font-size:14px;font-weight:800;font-variant-numeric:tabular-nums;
  background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent;
  flex:0 0 auto;
}
.faq-arrow{margin-left:auto;color:var(--c-ink-3);transition:transform .26s var(--ease);flex:0 0 auto}
.faq-item.open .faq-arrow{transform:rotate(180deg)}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .3s var(--ease)}
.faq-item.open .faq-a{grid-template-rows:1fr}
.faq-a > div{overflow:hidden}
.faq-a p{padding:0 24px 22px 62px;font-size:15px;line-height:1.85;color:var(--c-ink-2)}

/* ============ 底部 CTA ============ */
.cta-block{
  background:var(--grad-brand);border-radius:var(--r-cta);padding:64px 40px;
  text-align:center;color:#fff;box-shadow:0 30px 70px rgba(255,46,126,.24);
}
.cta-block h2{font-size:clamp(24px,3vw,36px);font-weight:800;line-height:1.3}
.cta-block p{margin-top:16px;font-size:17px;line-height:1.8;color:rgba(255,255,255,.9);max-width:620px;margin-left:auto;margin-right:auto}
.cta-block .btn-group{justify-content:center;margin-top:36px}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-ink);color:rgba(255,251,248,.72);padding:80px 0 0;margin-top:96px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand .logo{color:#fff}
.footer-brand p{margin-top:20px;font-size:14px;line-height:1.85;color:rgba(255,251,248,.62);max-width:330px}
.footer-qr{
  margin-top:24px;width:104px;height:104px;border-radius:16px;
  background:rgba(255,255,255,.06);border:1px dashed rgba(255,255,255,.22);
  display:grid;place-items:center;font-size:12px;color:rgba(255,251,248,.5);text-align:center;
  line-height:1.5;padding:8px;
}
.footer-col h4{
  position:relative;font-size:15px;font-weight:600;color:#fff;
  padding-bottom:14px;margin-bottom:20px;
}
.footer-col h4::after{
  content:"";position:absolute;left:0;bottom:0;width:24px;height:3px;border-radius:3px;
  background:var(--grad-brand);
}
.footer-col a,.footer-col span{display:block;padding:6px 0;font-size:14px;color:rgba(255,251,248,.68);transition:color .24s var(--ease)}
.footer-col a:hover{color:var(--c-brand)}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(255,255,255,.1);padding:24px 0 28px;
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13px;color:rgba(255,251,248,.5);
}

/* ============ 移动抽屉 ============ */
.drawer-mask{
  position:fixed;inset:0;background:rgba(27,18,36,.55);z-index:110;
  opacity:0;pointer-events:none;transition:opacity .3s var(--ease);
}
.drawer-mask.open{opacity:1;pointer-events:auto}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:84vw;max-width:360px;z-index:120;
  background:var(--c-surface);border-radius:24px 0 0 24px;padding:24px;
  display:flex;flex-direction:column;gap:8px;overflow-y:auto;
  transform:translateX(100%);transition:transform .32s var(--ease);
  box-shadow:-20px 0 60px rgba(27,18,36,.25);
}
.drawer.open{transform:translateX(0)}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.drawer-close{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  color:var(--c-ink-2);transition:background .24s var(--ease);
}
.drawer-close:hover{background:var(--c-surface-warm);color:var(--c-brand)}
.drawer nav a{
  display:block;padding:15px 16px;border-radius:14px;font-size:16px;font-weight:600;
  color:var(--c-ink);transition:background .24s var(--ease),color .24s var(--ease);
}
.drawer nav a:hover,.drawer nav a.active{background:var(--c-surface-warm);color:var(--c-brand-deep)}
.drawer .btn{width:100%;margin-top:20px}

/* ============ 移动固定转化条 ============ */
.mobile-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:90;display:none;
  align-items:center;gap:12px;
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  background:rgba(255,255,255,.92);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border-top:1px solid var(--c-line);
}
.mobile-bar p{font-size:14px;font-weight:600;color:var(--c-ink);flex:1;line-height:1.4}
.mobile-bar .btn{min-height:44px;padding:12px 20px;font-size:15px}

/* ============ 滚动入场 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .48s var(--ease),transform .48s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ============ 响应式 ============ */
@media(max-width:1199px){
  .hero-inner{gap:44px}
  .quote-grid{gap:20px}
}
@media(max-width:1023px){
  .nav-links{display:none}
  .burger{display:grid}
  .hero{padding-top:130px}
  .hero-inner{grid-template-columns:1fr;gap:44px;padding-bottom:88px}
  .hero-visual{order:2}
  .hero-sub{max-width:100%}
  .section{padding:76px 0}
  .highlight-wrap{grid-template-columns:1fr}
  .hl-main{padding:32px}
  .scene{grid-template-columns:1fr;gap:32px}
  .scene.reverse .scene-media{order:0}
  .scene + .scene{margin-top:64px}
  .post-grid{grid-template-columns:repeat(2,1fr)}
  .quote-grid{grid-template-columns:repeat(2,1fr)}
  .quote-card:nth-child(2){margin-top:0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-block{padding:48px 28px}
}
@media(max-width:767px){
  .btn-group{flex-wrap:wrap}
  .badges{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:36px}
  .badge{min-width:0;padding:14px 16px}
  .post-grid{grid-template-columns:1fr}
  .quote-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:36px}
  .site-footer{padding-top:64px;margin-top:72px}
  .faq-q{font-size:16px;padding:15px 18px;gap:12px}
  .faq-a p{padding:0 18px 20px 48px}
  .mobile-bar{display:flex}
  body{padding-bottom:78px}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:36px}
}
@media(max-width:479px){
  body{font-size:16px}
  .hero{padding-top:118px}
  .hero h1{font-size:28px}
  .hero-sub{font-size:16px}
  .btn{width:100%;padding:14px 20px}
  .mobile-bar .btn{width:auto}
  .btn-group{flex-direction:column;gap:12px}
  .cta-block .btn-group{flex-direction:column}
  .hl-main h3{font-size:22px}
  .scene h3{font-size:20px}
  .footer-bottom{flex-direction:column}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: article */
:root{
  --c-brand:#FF6A1F;
  --c-brand-deep:#E8460C;
  --c-pink:#FF2E7E;
  --c-accent:#10D6B4;
  --c-ink:#1B1224;
  --c-ink-2:#4A4256;
  --c-ink-3:#857C93;
  --c-bg:#FFFBF8;
  --c-surface:#FFFFFF;
  --c-surface-warm:#FFF3EC;
  --c-line:#EFE7E2;
  --c-success:#12B76A;
  --c-warn:#F5A524;
  --c-error:#E5484D;
  --grad-brand:linear-gradient(115deg,#FF6A1F 0%,#FF2E7E 100%);
  --grad-soft:linear-gradient(140deg,#FFF3EC 0%,#FFE8F1 100%);
  --r-sm:12px;
  --r-md:16px;
  --r-lg:24px;
  --r-xl:32px;
  --r-pill:999px;
  --sh-1:0 2px 10px rgba(27,18,36,.06);
  --sh-2:0 18px 40px rgba(27,18,36,.12);
  --sh-btn:0 12px 28px rgba(255,46,126,.32);
  --c-ease:cubic-bezier(.2,.8,.2,1);
  --w-container:1240px;
  --gap:24px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--c-ink-2);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;transition:color .24s var(--c-ease);}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input,select,textarea{font:inherit;}
h1,h2,h3,h4,h5{margin:0;color:var(--c-ink);font-weight:700;text-wrap:balance;}
p{margin:0;text-wrap:pretty;}
ul,ol{margin:0;padding:0;list-style:none;}
svg{display:block;}
:focus-visible{outline:3px solid rgba(255,106,31,.35);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:var(--w-container);margin:0 auto;padding:0 24px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:14px 28px;border-radius:var(--r-pill);
  font-size:16px;font-weight:700;letter-spacing:.01em;
  transition:transform .32s var(--c-ease),box-shadow .32s var(--c-ease),background .32s var(--c-ease),color .32s var(--c-ease),border-color .32s var(--c-ease);
  white-space:nowrap;
}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:0 8px 20px rgba(255,106,31,.24);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--sh-btn);filter:brightness(1.06);}
.btn-primary:active{transform:translateY(1px);box-shadow:0 6px 14px rgba(255,106,31,.22);}
.btn-outline{border:1.5px solid var(--c-brand);color:var(--c-brand);background:transparent;}
.btn-outline:hover{background:var(--c-surface-warm);transform:translateY(-2px);}
.btn-outline:active{transform:translateY(1px);}
.btn-ghost-dark{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.32);color:#fff;}
.btn-ghost-dark:hover{background:rgba(255,255,255,.24);transform:translateY(-2px);}
.btn-soft{background:var(--c-surface-warm);color:var(--c-brand-deep);border:1px solid var(--c-line);}
.btn-soft:hover{background:#FFE7D9;transform:translateY(-2px);}
.btn-sm{min-height:40px;padding:9px 20px;font-size:14px;}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}
.link-arrow{display:inline-flex;align-items:center;gap:8px;color:var(--c-brand);font-weight:600;font-size:15px;}
.link-arrow svg{transition:transform .32s var(--c-ease);}
.link-arrow:hover svg{transform:translateX(3px);}
.icon-btn{
  width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:var(--r-pill);color:#fff;transition:background .24s var(--c-ease),color .24s var(--c-ease);
}
.icon-btn:hover{background:rgba(255,255,255,.18);}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  background:rgba(255,255,255,.10);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.18);
  box-shadow:0 8px 24px rgba(27,18,36,.10);
  transition:background .24s var(--c-ease),border-color .24s var(--c-ease),box-shadow .24s var(--c-ease);
}
.site-header .bar{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  height:76px;transition:height .24s var(--c-ease);
}
.logo{display:inline-flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:19px;letter-spacing:.01em;white-space:nowrap;}
.logo-mark{
  width:34px;height:34px;border-radius:11px;background:var(--grad-brand);
  color:#fff;font-size:17px;font-weight:800;display:inline-flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px rgba(255,46,126,.32);
}
.nav-links{display:flex;align-items:center;gap:34px;}
.nav-links a{
  position:relative;color:rgba(255,255,255,.9);font-size:15.5px;font-weight:500;padding:6px 0;
  transition:color .24s var(--c-ease);
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;
  background:var(--grad-brand);transform:scaleX(0);transform-origin:left;
  transition:transform .3s var(--c-ease);
}
.nav-links a:hover{color:var(--c-brand);}
.nav-links a:hover::after,.nav-links a.active::after{transform:scaleX(1);}
.nav-links a.active{color:#fff;font-weight:600;}
.nav-actions{display:flex;align-items:center;gap:12px;}
.burger{display:none;width:44px;height:44px;align-items:center;justify-content:center;border-radius:var(--r-pill);color:#fff;}
.burger:hover{background:rgba(255,255,255,.18);}
.site-header.is-solid{
  background:rgba(255,251,248,.96);
  border-bottom-color:var(--c-line);
  box-shadow:0 8px 24px rgba(27,18,36,.08);
}
.site-header.is-solid .bar{height:64px;}
.site-header.is-solid .logo,
.site-header.is-solid .nav-links a,
.site-header.is-solid .icon-btn,
.site-header.is-solid .burger{color:var(--c-ink);}
.site-header.is-solid .nav-links a:hover{color:var(--c-brand);}
.site-header.is-solid .nav-links a.active{color:var(--c-brand-deep);}
.site-header.is-solid .icon-btn:hover,
.site-header.is-solid .burger:hover{background:var(--c-surface-warm);}

/* ---------- 移动抽屉 ---------- */
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:84vw;max-width:360px;z-index:80;
  background:var(--c-surface);border-radius:24px 0 0 24px;
  box-shadow:-20px 0 60px rgba(27,18,36,.22);
  transform:translateX(102%);transition:transform .36s var(--c-ease);
  display:flex;flex-direction:column;padding:22px;
  overflow-y:auto;
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px;}
.drawer-head .logo{color:var(--c-ink);font-size:17px;}
.drawer-head .icon-btn{color:var(--c-ink);}
.drawer-head .icon-btn:hover{background:var(--c-surface-warm);}
.drawer-nav{display:flex;flex-direction:column;gap:6px;}
.drawer-nav a{
  padding:14px 16px;border-radius:var(--r-md);font-size:16px;font-weight:600;color:var(--c-ink);
  transition:background .24s var(--c-ease),color .24s var(--c-ease);
}
.drawer-nav a:hover{background:var(--c-surface-warm);color:var(--c-brand-deep);}
.drawer-nav a.active{background:var(--grad-soft);color:var(--c-brand-deep);}
.drawer-foot{margin-top:auto;padding-top:24px;display:flex;flex-direction:column;gap:12px;}
.drawer-foot .btn{width:100%;}
.drawer-mask{
  position:fixed;inset:0;background:rgba(27,18,36,.42);z-index:70;opacity:0;visibility:hidden;
  transition:opacity .3s var(--c-ease),visibility .3s var(--c-ease);
}
.drawer-mask.open{opacity:1;visibility:visible;}

/* ---------- 页面深色头部 ---------- */
.page-hero{
  position:relative;background:var(--c-ink);overflow:hidden;
  padding:132px 0 168px;
}
.page-hero-bg{
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  opacity:.26;
}
.page-hero::before{
  content:"";position:absolute;width:520px;height:520px;border-radius:50%;
  left:-140px;top:-180px;background:radial-gradient(circle,rgba(255,106,31,.32) 0%,rgba(255,106,31,0) 68%);
  filter:blur(40px);
}
.page-hero::after{
  content:"";position:absolute;width:460px;height:460px;border-radius:50%;
  right:-120px;bottom:-200px;background:radial-gradient(circle,rgba(255,46,126,.24) 0%,rgba(255,46,126,0) 68%);
  filter:blur(50px);
}
.page-hero .container{position:relative;z-index:2;}
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:10px;font-size:13px;color:rgba(255,255,255,.62);}
.breadcrumb a{color:rgba(255,255,255,.72);}
.breadcrumb a:hover{color:var(--c-brand);text-decoration:underline;text-underline-offset:4px;}
.breadcrumb .sep{color:rgba(255,255,255,.32);}
.breadcrumb .current{color:#fff;max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ---------- 文章主体 ---------- */
.article-main{padding-bottom:96px;}
.article-card{
  position:relative;z-index:5;margin-top:-120px;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-xl);
  box-shadow:var(--sh-2);padding:44px 48px 40px;
}
.article-head{max-width:860px;margin:0 auto;}
.tag{
  display:inline-flex;align-items:center;gap:6px;padding:6px 14px;border-radius:var(--r-pill);
  font-size:13px;font-weight:600;background:var(--c-surface-warm);color:var(--c-brand-deep);
  border:1px solid var(--c-line);
}
.tag-grad{
  position:relative;color:#fff;background:var(--grad-brand);border:0;
  box-shadow:0 6px 16px rgba(255,46,126,.26);
}
.article-head h1{
  font-size:34px;font-weight:800;line-height:1.32;letter-spacing:-.01em;color:var(--c-ink);
  margin:20px 0 18px;
}
.meta-bar{display:flex;align-items:center;flex-wrap:wrap;gap:12px;font-size:13px;color:var(--c-ink-3);font-weight:500;}
.meta-bar i{display:inline-block;width:1px;height:12px;background:var(--c-line);}
.grad-divider{height:1px;margin:28px 0 0;background:linear-gradient(90deg,rgba(255,106,31,.85),rgba(255,46,126,.35) 42%,rgba(255,46,126,0));}

.article-layout{display:flex;gap:48px;justify-content:center;align-items:flex-start;margin-top:36px;}
.article-body{width:100%;max-width:760px;min-width:0;}

.article-body h2{
  position:relative;font-size:26px;font-weight:700;line-height:1.4;color:var(--c-ink);
  margin:46px 0 18px;padding-left:16px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:4px;border-radius:4px;background:var(--grad-brand);
}
.article-body h3{font-size:20px;font-weight:700;color:var(--c-ink);margin:32px 0 12px;}
.article-body h4{font-size:17px;font-weight:700;color:var(--c-ink);margin:24px 0 10px;}
.article-body p{font-size:16.5px;line-height:1.9;color:var(--c-ink-2);margin:0 0 20px;}
.article-body ul,.article-body ol{margin:0 0 22px;padding:0;}
.article-body ul li{position:relative;padding-left:24px;margin-bottom:12px;font-size:16.5px;line-height:1.85;}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:12px;width:7px;height:7px;border-radius:50%;background:var(--grad-brand);
}
.article-body ol{counter-reset:li;}
.article-body ol li{position:relative;padding-left:32px;margin-bottom:12px;font-size:16.5px;line-height:1.85;counter-increment:li;}
.article-body ol li::before{
  content:counter(li);position:absolute;left:0;top:5px;width:21px;height:21px;border-radius:50%;
  background:var(--grad-soft);color:var(--c-brand-deep);font-size:12px;font-weight:800;line-height:21px;text-align:center;
}
.article-body blockquote{
  margin:26px 0;padding:20px 24px;border-radius:var(--r-sm);
  background:var(--grad-soft);border-left:4px solid var(--c-brand);
  color:var(--c-ink);font-size:16px;line-height:1.85;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:var(--r-md);margin:10px 0 12px;width:100%;height:auto;}
.article-body figure{margin:24px 0;}
.article-body figcaption{font-size:13px;color:var(--c-ink-3);text-align:center;margin-top:10px;}
.article-body a{color:var(--c-brand);text-decoration:underline;text-underline-offset:4px;}
.article-body a:hover{color:var(--c-brand-deep);}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;background:var(--c-surface);border-radius:var(--r-sm);overflow:hidden;}
.article-body th{background:var(--c-surface-warm);color:var(--c-ink);font-weight:700;text-align:left;}
.article-body th,.article-body td{padding:13px 16px;border-bottom:1px solid var(--c-line);}
.article-body tbody tr:nth-child(even){background:var(--c-surface-warm);}
.article-body pre{
  background:var(--c-ink);color:#FFF7F2;border-radius:var(--r-sm);padding:18px 20px;
  overflow-x:auto;font-size:14px;line-height:1.7;margin:22px 0;
}
.article-body code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:14px;}
.article-body :not(pre) > code{background:var(--c-surface-warm);color:var(--c-brand-deep);padding:2px 7px;border-radius:6px;}
.article-body hr{border:0;height:1px;background:var(--c-line);margin:34px 0;}

/* ---------- 侧栏目录 ---------- */
.article-aside{width:260px;flex:0 0 260px;position:sticky;top:96px;}
.toc-card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);padding:22px 20px;box-shadow:var(--sh-1);}
.toc-card h3{font-size:15px;font-weight:700;color:var(--c-ink);margin-bottom:14px;display:flex;align-items:center;gap:8px;}
.toc-card h3::before{content:"";width:18px;height:3px;border-radius:3px;background:var(--grad-brand);}
.toc-list{display:flex;flex-direction:column;gap:2px;}
.toc-list a{
  display:block;padding:8px 10px;border-radius:10px;font-size:14px;color:var(--c-ink-2);
  line-height:1.5;border-left:2px solid transparent;
  transition:background .24s var(--c-ease),color .24s var(--c-ease),border-color .24s var(--c-ease);
  overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;
}
.toc-list a:hover{background:var(--c-surface-warm);color:var(--c-brand-deep);}
.toc-list a.active{background:var(--grad-soft);color:var(--c-brand-deep);font-weight:600;border-left-color:var(--c-brand);}
.toc-back{margin-top:18px;padding-top:16px;border-top:1px dashed var(--c-line);}

/* ---------- 文末 ---------- */
.article-foot{
  max-width:760px;margin:44px auto 0;padding-top:28px;border-top:1px dashed var(--c-line);
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
}
.tag-list{display:flex;flex-wrap:wrap;gap:10px;}
.tag-list .tag:hover{background:#FFE7D9;color:var(--c-brand-deep);}
.foot-actions{display:flex;gap:10px;}
.foot-actions .icon-btn{color:var(--c-ink-2);border:1px solid var(--c-line);background:var(--c-surface);}
.foot-actions .icon-btn:hover{color:var(--c-brand);border-color:var(--c-brand);background:var(--c-surface-warm);}

.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:26px;}
.section-head h2{font-size:26px;font-weight:700;color:var(--c-ink);}
.section-head p{font-size:14.5px;color:var(--c-ink-3);margin-top:8px;}

/* ---------- 上下篇 ---------- */
.prev-next{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:64px;}
.pn-card{
  display:flex;align-items:center;gap:14px;padding:20px 22px;border-radius:var(--r-lg);
  background:var(--c-surface);border:1px solid var(--c-line);box-shadow:var(--sh-1);
  transition:transform .32s var(--c-ease),box-shadow .32s var(--c-ease),border-color .32s var(--c-ease);
  min-height:84px;
}
.pn-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#FFD9C4;}
.pn-card span.pn-label{display:block;font-size:12.5px;color:var(--c-ink-3);font-weight:600;margin-bottom:4px;}
.pn-card strong{display:block;font-size:15.5px;color:var(--c-ink);font-weight:700;line-height:1.5;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.pn-card .pn-icon{
  width:42px;height:42px;flex:0 0 42px;border-radius:14px;background:var(--grad-soft);
  display:flex;align-items:center;justify-content:center;color:var(--c-brand-deep);
}
.pn-card.is-empty{background:var(--c-surface-warm);border-style:dashed;box-shadow:none;cursor:default;}
.pn-card.is-empty strong{color:var(--c-ink-3);font-weight:600;}
.pn-card.is-empty .pn-icon{background:rgba(255,255,255,.7);color:var(--c-ink-3);}
.pn-card.is-empty:hover{transform:none;box-shadow:none;border-color:var(--c-line);}

/* ---------- 相关推荐 ---------- */
.related{margin-top:80px;}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--gap);}
.card{
  display:flex;flex-direction:column;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-lg);padding:20px;box-shadow:var(--sh-1);
  transition:transform .32s var(--c-ease),box-shadow .32s var(--c-ease),border-color .32s var(--c-ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#FFD9C4;}
.card-cover{
  position:relative;border-radius:var(--r-md);overflow:hidden;aspect-ratio:16/9;background:var(--grad-soft);
  margin-bottom:18px;
}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--c-ease);}
.card:hover .card-cover img{transform:scale(1.04);}
.card h3{font-size:18px;font-weight:700;line-height:1.5;color:var(--c-ink);margin:12px 0 8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card p{font-size:14.5px;line-height:1.75;color:var(--c-ink-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-foot{margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--c-ink-3);}
.card-foot .link-arrow{font-size:13.5px;}

/* ---------- CTA ---------- */
.cta-band{
  margin-top:80px;border-radius:var(--r-xl);padding:48px 44px;
  background:var(--grad-brand);color:#fff;text-align:center;
  box-shadow:0 24px 60px rgba(255,46,126,.24);
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;width:420px;height:420px;border-radius:50%;
  right:-140px;top:-200px;background:rgba(255,255,255,.16);filter:blur(30px);
}
.cta-band h2{position:relative;color:#fff;font-size:30px;font-weight:800;line-height:1.35;}
.cta-band p{position:relative;margin:14px auto 26px;max-width:640px;font-size:16px;color:rgba(255,255,255,.92);}
.cta-actions{position:relative;display:flex;gap:14px;justify-content:center;flex-wrap:wrap;}
.cta-band .btn-primary{background:#fff;color:var(--c-brand-deep);box-shadow:0 12px 28px rgba(27,18,36,.18);}
.cta-band .btn-primary:hover{background:#FFF7F2;}
.cta-band .btn-ghost-dark{border-color:rgba(255,255,255,.6);}

/* ---------- 空态 ---------- */
.empty-state{
  max-width:520px;margin:40px auto;text-align:center;padding:44px 28px;border-radius:var(--r-lg);
  background:var(--c-surface-warm);border:1px dashed var(--c-line);
}
.empty-state svg{margin:0 auto 16px;color:var(--c-ink-3);}
.empty-state p{font-size:15.5px;color:var(--c-ink-2);margin-bottom:20px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-ink);color:rgba(255,247,242,.78);padding:72px 0 28px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.1fr;gap:40px;}
.footer-brand .logo{color:#fff;margin-bottom:18px;}
.footer-brand p{font-size:14.5px;line-height:1.85;color:rgba(255,247,242,.68);max-width:340px;}
.footer-qr{
  margin-top:22px;width:130px;height:130px;border-radius:var(--r-md);
  background:rgba(255,255,255,.06);border:1px dashed rgba(255,255,255,.24);
  display:flex;align-items:center;justify-content:center;text-align:center;
  font-size:13px;line-height:1.7;color:rgba(255,247,242,.7);padding:12px;
}
.footer-col h4{position:relative;color:#fff;font-size:15px;font-weight:600;margin-bottom:22px;padding-bottom:12px;}
.footer-col h4::after{content:"";position:absolute;left:0;bottom:0;width:24px;height:3px;border-radius:3px;background:var(--grad-brand);}
.footer-col a,.footer-col span{display:block;font-size:14.5px;color:rgba(255,247,242,.72);margin-bottom:12px;}
.footer-col a:hover{color:var(--c-brand);}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,247,242,.56);
}

/* ---------- 移动固定转化条 ---------- */
.mobile-bar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:65;
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  background:rgba(255,255,255,.94);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border-top:1px solid var(--c-line);
  align-items:center;gap:12px;
}
.mobile-bar span{font-size:13.5px;font-weight:600;color:var(--c-ink);flex:1;line-height:1.4;}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .48s var(--c-ease),transform .48s var(--c-ease);}
.reveal.in{opacity:1;transform:none;}

@media (max-width:1199px){
  .article-aside{display:none;}
  .article-layout{gap:0;}
}
@media (max-width:1024px){
  .container{padding:0 20px;}
  .nav-links{display:none;}
  .burger{display:inline-flex;}
  .nav-actions .btn{display:none;}
  .article-card{padding:36px 32px 32px;margin-top:-100px;}
  .page-hero{padding:120px 0 148px;}
  .article-head h1{font-size:30px;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
  .cta-band{padding:40px 32px;}
  .cta-band h2{font-size:26px;}
}
@media (max-width:768px){
  .logo{font-size:15px;}
  .logo-mark{width:30px;height:30px;font-size:15px;border-radius:10px;}
  .page-hero{padding:108px 0 132px;}
  .article-card{margin-top:-88px;padding:28px 22px 26px;border-radius:var(--r-lg);}
  .article-head h1{font-size:24px;}
  .meta-bar{font-size:12.5px;gap:9px;}
  .article-body h2{font-size:21px;margin:36px 0 14px;}
  .article-body h3{font-size:18px;}
  .article-body p,.article-body ul li,.article-body ol li{font-size:16px;}
  .article-body table{display:block;overflow-x:auto;white-space:nowrap;}
  .article-foot{flex-direction:column;align-items:flex-start;}
  .prev-next{grid-template-columns:1fr;gap:14px;margin-top:48px;}
  .related{margin-top:56px;}
  .card-grid{grid-template-columns:1fr;}
  .cta-band{margin-top:56px;padding:32px 22px;border-radius:var(--r-lg);}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .mobile-bar{display:flex;}
  body{padding-bottom:76px;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .page-hero{padding:100px 0 120px;}
  .article-card{margin-top:-76px;padding:24px 18px 22px;}
  .article-head h1{font-size:21px;line-height:1.4;}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px;}
  .section-head h2{font-size:22px;}
  .breadcrumb .current{max-width:100%;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category1 */
:root{
  --c-brand:#FF6A1F;
  --c-brand-deep:#E8460C;
  --c-pink:#FF2E7E;
  --c-accent:#10D6B4;
  --c-ink:#1B1224;
  --c-ink-2:#4A4256;
  --c-ink-3:#857C93;
  --c-bg:#FFFBF8;
  --c-surface:#FFFFFF;
  --c-surface-warm:#FFF3EC;
  --c-line:#EFE7E2;
  --c-success:#12B76A;
  --c-warn:#F5A524;
  --c-error:#E5484D;
  --grad-brand:linear-gradient(115deg,#FF6A1F 0%,#FF2E7E 100%);
  --grad-soft:linear-gradient(140deg,#FFF3EC 0%,#FFE8F1 100%);
  --r-lg:24px;
  --r-md:20px;
  --r-sm:16px;
  --r-pill:999px;
  --sh-card:0 2px 10px rgba(27,18,36,.06);
  --sh-hover:0 18px 40px rgba(27,18,36,.12);
  --max:1240px;
  --font:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
@media(max-width:1439px){:root{--max:1160px}}
@media(max-width:1199px){:root{--max:960px}}
@media(max-width:1023px){:root{--max:720px}}
@media(max-width:767px){:root{--max:100%}}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--c-ink-2);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
body.lock{overflow:hidden}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700;line-height:1.3;text-wrap:balance}
h1{font-weight:800;line-height:1.22;letter-spacing:-.02em}
p{margin:0;text-wrap:pretty}
ul{margin:0;padding:0;list-style:none}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block;height:auto}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,select,textarea{font:inherit}
:focus-visible{outline:3px solid rgba(255,106,31,.45);outline-offset:2px;border-radius:8px}
::selection{background:rgba(255,106,31,.22)}

.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 20px}
@media(max-width:480px){.container{padding:0 16px}}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:13px 28px;border-radius:var(--r-pill);
  font-size:15.5px;font-weight:700;white-space:nowrap;
  transition:transform .22s cubic-bezier(.2,.8,.2,1),box-shadow .3s ease,background .24s ease,color .24s ease,border-color .24s ease,filter .24s ease;
}
.btn-sm{min-height:42px;padding:9px 20px;font-size:14.5px}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:0 8px 22px rgba(255,106,31,.28)}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.06);box-shadow:0 12px 28px rgba(255,46,126,.32)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.32);color:#fff;backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px)}
.btn-ghost:hover{background:rgba(255,255,255,.24);transform:translateY(-2px)}
.btn-outline{background:var(--c-surface);border:1.5px solid var(--c-brand);color:var(--c-brand)}
.btn-outline:hover{background:var(--c-surface-warm);transform:translateY(-2px)}
.btn[disabled]{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;filter:none}
.link-arrow{display:inline-flex;align-items:center;gap:8px;color:var(--c-brand);font-weight:600;font-size:15px;transition:color .22s ease}
.link-arrow .arr{transition:transform .24s cubic-bezier(.2,.8,.2,1)}
.link-arrow:hover{color:var(--c-brand-deep)}
.link-arrow:hover .arr{transform:translateX(3px)}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:120;
  background:rgba(255,255,255,.10);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.18);
  box-shadow:0 8px 24px rgba(27,18,36,.10);
  transition:background .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.site-header .bar{display:flex;align-items:center;gap:20px;height:76px;transition:height .24s ease}
.site-header .logo,.site-header .nav-links a,.site-header .icon-btn,.site-header .burger{color:#fff}
.site-header.is-solid{
  background:var(--c-bg);
  border-bottom-color:var(--c-line);
  box-shadow:0 8px 28px rgba(27,18,36,.10);
}
.site-header.is-solid .logo,
.site-header.is-solid .nav-links a,
.site-header.is-solid .icon-btn,
.site-header.is-solid .burger{color:var(--c-ink)}
.site-header.is-solid .bar{height:64px}

.logo{display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:800;letter-spacing:-.01em;white-space:nowrap;flex:none}
.logo-mark{
  width:34px;height:34px;flex:none;border-radius:11px;
  background:var(--grad-brand);color:#fff;
  display:grid;place-items:center;font-size:17px;font-weight:800;
  box-shadow:0 6px 16px rgba(255,46,126,.28);
}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-links a{position:relative;padding:10px 14px;font-size:15px;font-weight:500;border-radius:12px;transition:color .22s ease}
.nav-links a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:3px;height:2px;border-radius:2px;
  background:var(--grad-brand);transform:scaleX(0);transform-origin:left;
  transition:transform .26s cubic-bezier(.2,.8,.2,1);
}
.nav-links a:hover{color:var(--c-brand)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.active{font-weight:700}
.nav-links a.active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:12px;flex:none}
.icon-btn{
  width:44px;height:44px;border-radius:50%;display:grid;place-items:center;
  border:1px solid rgba(255,255,255,.28);
  transition:background .22s ease,transform .22s ease,border-color .22s ease;
}
.icon-btn:hover{background:rgba(255,255,255,.18);transform:translateY(-1px)}
.site-header.is-solid .icon-btn{border-color:var(--c-line)}
.site-header.is-solid .icon-btn:hover{background:var(--c-surface-warm)}
.burger{
  display:none;width:44px;height:44px;border-radius:50%;
  place-items:center;border:1px solid rgba(255,255,255,.28);
  transition:background .22s ease,border-color .22s ease;
}
.burger:hover{background:rgba(255,255,255,.18)}
.site-header.is-solid .burger{border-color:var(--c-line)}

/* 抽屉 */
.drawer-mask{
  position:fixed;inset:0;z-index:125;background:rgba(27,18,36,.46);
  opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s ease;
}
.drawer-mask.open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;z-index:130;width:84vw;max-width:360px;
  background:#fff;border-radius:24px 0 0 24px;padding:24px 22px 28px;
  display:flex;flex-direction:column;
  transform:translateX(102%);
  transition:transform .34s cubic-bezier(.2,.8,.2,1);
  box-shadow:-20px 0 60px rgba(27,18,36,.24);
}
.drawer.open{transform:translateX(0)}
.drawer-top{display:flex;align-items:center;justify-content:space-between;gap:12px}
.drawer-top .logo{color:var(--c-ink);font-size:16px}
.drawer-close{
  width:44px;height:44px;border-radius:50%;display:grid;place-items:center;
  background:var(--c-surface-warm);color:var(--c-ink);
  transition:background .22s ease;
}
.drawer-close:hover{background:#FFE3D4}
.drawer nav{display:grid;gap:6px;margin-top:26px}
.drawer nav a{padding:14px 16px;border-radius:14px;font-size:16px;font-weight:600;color:var(--c-ink);transition:background .22s ease,color .22s ease}
.drawer nav a:hover{background:var(--c-surface-warm)}
.drawer nav a.active{background:var(--c-surface-warm);color:var(--c-brand)}
.drawer .btn{width:100%;margin-top:auto}

/* ---------- 紧凑首屏 ---------- */
.cat-hero{position:relative;overflow:hidden;background:var(--c-ink);color:#fff;padding:152px 0 88px}
.cat-hero::before{
  content:"";position:absolute;inset:0;opacity:.22;
  background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;
}
.cat-hero::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(560px 340px at 12% 16%,rgba(255,106,31,.30),transparent 70%),
    radial-gradient(480px 320px at 88% 8%,rgba(255,46,126,.24),transparent 72%),
    linear-gradient(180deg,rgba(27,18,36,.42) 0%,rgba(27,18,36,.86) 60%,rgba(27,18,36,.94) 100%);
}
.hero-fade{
  position:absolute;left:0;right:0;bottom:0;height:84px;z-index:3;
  background:linear-gradient(180deg,rgba(255,251,248,0),var(--c-bg));
}
.hero-inner{position:relative;z-index:4}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.68)}
.crumbs a{color:rgba(255,255,255,.8);transition:color .22s ease}
.crumbs a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}
.crumbs .sep{opacity:.5}
.crumbs .cur{color:#fff;font-weight:600}
.cat-hero-grid{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,.85fr);gap:48px;align-items:center;margin-top:22px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;margin-bottom:18px;
  padding:7px 14px;border-radius:var(--r-pill);font-size:13px;font-weight:600;letter-spacing:.04em;
  color:#FFD5C2;background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.22);
}
.cat-hero h1{font-size:clamp(28px,3.4vw,42px);color:#fff}
.lede{margin-top:18px;max-width:560px;font-size:17.5px;line-height:1.8;color:rgba(255,255,255,.78)}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-badges{display:grid;gap:16px}
.badge-card{position:relative;padding:20px 22px;border-radius:var(--r-md);background:rgba(255,255,255,.08);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}
.badge-card::before{
  content:"";position:absolute;inset:0;border-radius:inherit;padding:1px;
  background:var(--grad-brand);pointer-events:none;
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;
}
.badge-num{font-size:30px;font-weight:800;line-height:1.1;color:#fff;font-variant-numeric:tabular-nums}
.badge-num em{font-style:normal;font-size:14px;font-weight:500;color:rgba(255,255,255,.72);margin-left:6px}
.badge-label{margin-top:8px;font-size:12.5px;line-height:1.65;color:rgba(255,255,255,.68)}

/* ---------- 板块 ---------- */
.section{padding:96px 0}
.section.tint{background:var(--c-surface-warm)}
.section.dark{background:var(--c-ink)}
.section-head{max-width:740px;margin-bottom:46px}
.section-head h2{font-size:34px;letter-spacing:-.01em}
.section-head p{margin-top:14px;font-size:16.5px;color:var(--c-ink-2)}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section.dark .section-head h2{color:#fff}
.section.dark .section-head p{color:rgba(255,255,255,.72)}
.section-cta{padding:0 0 96px}
#steps{scroll-margin-top:110px}
#trouble{scroll-margin-top:110px}

/* ---------- 双列错落卡 ---------- */
.split-cards{display:grid;grid-template-columns:1.05fr .95fr;gap:24px;align-items:stretch}
.stack{display:grid;gap:24px;align-content:start}
.feature-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:30px;box-shadow:var(--sh-card);
  transition:transform .34s cubic-bezier(.2,.8,.2,1),box-shadow .34s ease;
}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover)}
.feature-card.fill{height:100%;display:flex;flex-direction:column;gap:18px;background:var(--grad-soft);border-color:#FFE0D2}
.feature-card.fill .link-arrow{margin-top:auto}
.icon-badge{
  width:52px;height:52px;border-radius:16px;margin-bottom:20px;
  background:var(--grad-brand);color:#fff;display:grid;place-items:center;
  box-shadow:0 10px 24px rgba(255,106,31,.26);
}
.feature-card h3{font-size:21px;margin-bottom:12px}
.feature-card p{font-size:15.6px;color:var(--c-ink-2)}

/* ---------- 数据带 ---------- */
.stat-row{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.stat{position:relative;padding:26px 22px;border-radius:var(--r-md);background:rgba(255,255,255,.06)}
.stat::before{
  content:"";position:absolute;inset:0;border-radius:inherit;padding:1px;opacity:.55;
  background:var(--grad-brand);pointer-events:none;
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;
}
.stat .num{font-size:32px;font-weight:800;line-height:1.1;color:#fff;font-variant-numeric:tabular-nums}
.stat .num em{font-style:normal;font-size:14px;font-weight:500;color:rgba(255,255,255,.7);margin-left:6px}
.stat .txt{margin-top:10px;font-size:13.5px;line-height:1.7;color:rgba(255,255,255,.66)}

/* ---------- 图文段落 ---------- */
.story{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);gap:56px;align-items:center}
.story + .story{margin-top:80px}
.story.reverse .story-text{order:2}
.story-text h3{font-size:23px;margin-bottom:16px}
.story-text > p{font-size:16px;color:var(--c-ink-2)}
.points{display:grid;gap:14px;margin-top:22px}
.points li{position:relative;padding-left:24px;font-size:15.6px;color:var(--c-ink-2)}
.points li::before{
  content:"";position:absolute;left:0;top:.66em;width:9px;height:9px;border-radius:50%;
  background:var(--grad-brand);
}
.story-media{border-radius:var(--r-lg);overflow:hidden;box-shadow:0 20px 48px rgba(27,18,36,.14);background:var(--grad-soft)}
.story-media img{width:100%;height:340px;object-fit:cover;transition:transform .4s cubic-bezier(.2,.8,.2,1)}
.story-media:hover img{transform:scale(1.04)}

/* ---------- FAQ ---------- */
.faq{max-width:880px;margin:0 auto;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);box-shadow:var(--sh-card);overflow:hidden}
.faq-item + .faq-item{border-top:1px solid var(--c-line)}
.faq-q{
  width:100%;min-height:64px;padding:16px 24px;display:flex;align-items:center;gap:14px;
  text-align:left;font-size:17px;font-weight:600;color:var(--c-ink);
  transition:color .22s ease;
}
.faq-q:hover{color:var(--c-brand)}
.faq-q .idx{
  font-weight:800;font-variant-numeric:tabular-nums;
  background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.faq-q .caret{margin-left:auto;flex:none;color:var(--c-ink-3);transition:transform .26s ease,color .26s ease}
.faq-item.open .faq-q .caret{transform:rotate(180deg);color:var(--c-brand)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s ease}
.faq-a p{padding:0 24px 22px 58px;font-size:15.6px;line-height:1.85;color:var(--c-ink-2)}

/* ---------- CTA 窄条 ---------- */
.cta-strip{
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  padding:34px 38px;border-radius:var(--r-lg);background:var(--grad-soft);border:1px solid #FFE0D2;
}
.cta-strip h2{font-size:26px}
.cta-strip p{margin-top:10px;font-size:15.5px;color:var(--c-ink-2);max-width:640px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-ink);color:rgba(255,255,255,.72);padding:76px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand .logo{color:#fff;margin-bottom:18px}
.footer-brand p{font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.62)}
.footer-qr{
  margin-top:22px;width:118px;height:118px;border-radius:16px;
  border:1px dashed rgba(255,255,255,.28);display:grid;place-items:center;text-align:center;
  font-size:12.5px;line-height:1.6;color:rgba(255,255,255,.6);
}
.footer-col h4{position:relative;font-size:15px;color:#fff;margin-bottom:18px;padding-bottom:14px}
.footer-col h4::after{content:"";position:absolute;left:0;bottom:0;width:24px;height:3px;border-radius:3px;background:var(--grad-brand)}
.footer-col a,.footer-col span{display:block;font-size:14.5px;color:rgba(255,255,255,.66);margin-bottom:12px;transition:color .22s ease,transform .22s ease}
.footer-col a:hover{color:var(--c-brand);transform:translateX(3px)}
.footer-bottom{
  margin-top:56px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.52);
}

/* ---------- 移动固定转化条 ---------- */
.mobile-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:110;display:none;align-items:center;gap:12px;
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-top:1px solid var(--c-line);
}
.mobile-bar p{flex:1;margin:0;font-size:13.5px;line-height:1.45;color:var(--c-ink-2)}

/* ---------- 滚动入场 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .48s cubic-bezier(.2,.8,.2,1),transform .48s cubic-bezier(.2,.8,.2,1)}
.reveal.in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media(max-width:1199px){
  .section{padding:88px 0}
  .section-cta{padding-bottom:88px}
  .section-head h2{font-size:31px}
}
@media(max-width:1023px){
  .nav-links{display:none}
  .burger{display:grid}
  .nav-actions .btn{display:none}
  .cat-hero{padding:140px 0 76px}
  .cat-hero-grid{grid-template-columns:1fr;gap:34px}
  .hero-badges{grid-template-columns:1fr 1fr}
  .split-cards{grid-template-columns:1fr}
  .stat-row{grid-template-columns:1fr 1fr}
  .story{grid-template-columns:1fr;gap:30px}
  .story.reverse .story-text{order:0}
  .story + .story{margin-top:64px}
  .story-media img{height:280px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
}
@media(max-width:767px){
  body{padding-bottom:72px}
  .section{padding:56px 0}
  .section-cta{padding-bottom:56px}
  .section-head{margin-bottom:32px}
  .section-head h2{font-size:24px}
  .section-head p{font-size:15.5px}
  .cat-hero{padding:124px 0 62px}
  .lede{font-size:16px}
  .hero-cta{gap:12px}
  .hero-cta .btn{width:100%}
  .hero-badges{grid-template-columns:1fr 1fr;gap:12px}
  .badge-card{padding:16px}
  .badge-num{font-size:24px}
  .feature-card{padding:24px}
  .stat-row{gap:12px}
  .stat{padding:20px 16px}
  .stat .num{font-size:26px}
  .story-media img{height:220px}
  .faq-q{font-size:15.8px;padding:14px 18px}
  .faq-a p{padding:0 18px 18px 46px;font-size:15px}
  .cta-strip{flex-direction:column;align-items:flex-start;padding:26px 22px;gap:22px}
  .cta-strip h2{font-size:22px}
  .cta-strip .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-bottom{flex-direction:column;gap:8px}
  .mobile-bar{display:flex}
}
@media(max-width:480px){
  .cat-hero h1{font-size:26px}
  .hero-badges{grid-template-columns:1fr}
  .btn{font-size:15px;padding:12px 22px}
}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: category2 */
:root{
  --c-brand:#FF6A1F;
  --c-brand-deep:#E8460C;
  --c-pink:#FF2E7E;
  --c-accent:#10D6B4;
  --c-ink:#1B1224;
  --c-ink-2:#4A4256;
  --c-ink-3:#857C93;
  --c-bg:#FFFBF8;
  --c-surface:#FFFFFF;
  --c-surface-warm:#FFF3EC;
  --c-line:#EFE7E2;
  --success:#12B76A;
  --warn:#F5A524;
  --error:#E5484D;
  --grad-brand:linear-gradient(115deg,#FF6A1F 0%,#FF2E7E 100%);
  --grad-soft:linear-gradient(140deg,#FFF3EC 0%,#FFE8F1 100%);
  --r-lg:24px;
  --r-md:16px;
  --r-sm:12px;
  --r-cta:32px;
  --r-pill:999px;
  --sh-1:0 2px 10px rgba(27,18,36,.06);
  --sh-2:0 18px 40px rgba(27,18,36,.12);
  --sh-btn:0 12px 28px rgba(255,46,126,.32);
  --ease:cubic-bezier(.2,.8,.2,1);
  --font:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,
*::before,
*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--c-ink);
  background:var(--c-bg);
  font-variant-numeric:tabular-nums;
}
body.no-scroll{overflow:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700;letter-spacing:-.01em;text-wrap:balance}
p{margin:0;text-wrap:pretty}
input,select,textarea{font:inherit}
::selection{background:rgba(255,106,31,.22)}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 20px}
@media (max-width:1439px){.container{max-width:1160px}}
@media (max-width:1199px){.container{max-width:960px}}
@media (max-width:1023px){.container{max-width:720px}}
@media (max-width:767px){.container{max-width:none;padding:0 16px}}

/* ---------- header ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:60;
  background:rgba(27,18,36,.42);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.16);
  box-shadow:0 8px 24px rgba(27,18,36,.10);
  transition:background .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header.solid{
  background:var(--c-bg);
  border-bottom-color:var(--c-line);
  box-shadow:0 6px 20px rgba(27,18,36,.08);
}
.site-header .bar{
  display:flex;
  align-items:center;
  gap:28px;
  height:76px;
  transition:height .24s var(--ease);
}
.site-header.solid .bar{height:64px}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:17px;
  font-weight:800;
  letter-spacing:-.01em;
  color:#fff;
  white-space:nowrap;
  transition:color .24s var(--ease);
}
.logo-mark{
  width:34px;height:34px;
  border-radius:11px;
  background:var(--grad-brand);
  color:#fff;
  display:grid;place-items:center;
  font-size:17px;font-weight:800;
  box-shadow:0 6px 16px rgba(255,46,126,.35);
  flex:none;
}
.site-header.solid .logo{color:var(--c-ink)}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{
  position:relative;
  padding:10px 14px;
  font-size:15px;
  font-weight:500;
  color:rgba(255,255,255,.88);
  border-radius:10px;
  transition:color .2s var(--ease);
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:4px;
  height:2px;border-radius:2px;
  background:var(--grad-brand);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .26s var(--ease);
}
.nav-links a:hover{color:#fff}
.nav-links a:hover::after,
.nav-links a.active::after{transform:scaleX(1)}
.nav-links a.active{font-weight:700;color:#fff}
.site-header.solid .nav-links a{color:var(--c-ink-2)}
.site-header.solid .nav-links a:hover,
.site-header.solid .nav-links a.active{color:var(--c-ink)}
.site-header.solid .nav-links a:hover::after,
.site-header.solid .nav-links a.active::after{background:var(--grad-brand)}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.icon-btn{
  width:44px;height:44px;
  border-radius:var(--r-pill);
  display:grid;place-items:center;
  color:#fff;
  background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.22);
  transition:background .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease);
}
.icon-btn:hover{background:rgba(255,255,255,.24)}
.site-header.solid .icon-btn{color:var(--c-ink-2);background:var(--c-surface-warm);border-color:var(--c-line)}
.site-header.solid .icon-btn:hover{color:var(--c-brand)}
.burger{
  display:none;
  width:44px;height:44px;
  border-radius:var(--r-sm);
  place-items:center;
  color:#fff;
  background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.22);
  transition:background .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease);
}
.site-header.solid .burger{color:var(--c-ink-2);background:var(--c-surface-warm);border-color:var(--c-line)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 28px;
  border-radius:var(--r-pill);
  font-size:15px;
  font-weight:700;
  white-space:nowrap;
  transition:transform .28s var(--ease),box-shadow .28s var(--ease),background .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease),filter .24s var(--ease);
}
.btn-sm{height:40px;padding:0 20px;font-size:14px}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:0 8px 20px rgba(255,106,31,.28)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--sh-btn);filter:brightness(1.06)}
.btn-primary:active{transform:translateY(1px)}
.btn-outline{background:var(--c-surface);color:var(--c-brand);border:1.5px solid var(--c-brand)}
.btn-outline:hover{background:var(--c-surface-warm);transform:translateY(-2px)}
.btn:focus-visible{outline:3px solid rgba(255,106,31,.35);outline-offset:2px}
.btn[disabled]{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}
.text-link{
  display:inline-flex;align-items:center;gap:8px;
  color:var(--c-brand);
  font-size:14px;font-weight:700;
  border-bottom:1px solid transparent;
  transition:color .24s var(--ease),border-color .24s var(--ease);
}
.text-link svg{transition:transform .28s var(--ease)}
.text-link:hover{color:var(--c-brand-deep);border-bottom-color:var(--c-brand-deep)}
.text-link:hover svg{transform:translateX(2px)}

/* ---------- drawer ---------- */
.drawer{
  position:fixed;
  top:0;right:0;bottom:0;
  width:84vw;
  max-width:360px;
  background:var(--c-surface);
  border-radius:24px 0 0 24px;
  padding:22px;
  display:flex;
  flex-direction:column;
  gap:10px;
  z-index:80;
  transform:translateX(105%);
  transition:transform .3s var(--ease);
  box-shadow:-20px 0 60px rgba(27,18,36,.18);
}
.drawer.open{transform:translateX(0)}
.drawer-top{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:16px;border-bottom:1px solid var(--c-line)}
.drawer-top .logo{color:var(--c-ink);font-size:16px}
.drawer-close{
  width:40px;height:40px;border-radius:var(--r-pill);
  display:grid;place-items:center;
  color:var(--c-ink-2);
  background:var(--c-surface-warm);
  transition:color .24s var(--ease),background .24s var(--ease);
}
.drawer-close:hover{color:var(--c-brand)}
.drawer-nav{display:flex;flex-direction:column;gap:4px;margin-top:8px}
.drawer-nav a{
  padding:14px 16px;
  border-radius:var(--r-sm);
  font-size:15.5px;
  font-weight:600;
  color:var(--c-ink-2);
  transition:background .24s var(--ease),color .24s var(--ease);
}
.drawer-nav a:hover{background:var(--c-surface-warm);color:var(--c-brand)}
.drawer-nav a.active{background:var(--c-surface-warm);color:var(--c-brand-deep)}
.drawer-cta{margin-top:auto;width:100%}
.drawer-mask{
  position:fixed;inset:0;z-index:70;
  background:rgba(27,18,36,.45);
  opacity:0;pointer-events:none;
  transition:opacity .3s var(--ease);
}
.drawer-mask.open{opacity:1;pointer-events:auto}

/* ---------- hero ---------- */
.page-hero{
  position:relative;
  overflow:hidden;
  background:var(--c-bg);
  padding:150px 0 72px;
}
.page-hero::before{
  content:"";position:absolute;top:-140px;right:-120px;
  width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,106,31,.22),rgba(255,106,31,0) 70%);
  filter:blur(18px);
}
.page-hero::after{
  content:"";position:absolute;bottom:-180px;left:-140px;
  width:460px;height:460px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,46,126,.18),rgba(255,46,126,0) 70%);
  filter:blur(18px);
}
.page-hero .container{position:relative;z-index:2}
.breadcrumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:13px;color:var(--c-ink-3);
  margin-bottom:26px;
}
.breadcrumb a{color:var(--c-ink-3);transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--c-brand);text-decoration:underline;text-underline-offset:4px}
.breadcrumb .sep{opacity:.6}
.breadcrumb .current{color:var(--c-ink);font-weight:600}
.hero-card{
  position:relative;
  border-radius:var(--r-lg);
  padding:2px;
  background:var(--grad-brand);
  box-shadow:0 18px 40px rgba(255,106,31,.16);
}
.hero-card-inner{
  position:relative;
  overflow:hidden;
  background:var(--c-surface);
  border-radius:22px;
  padding:46px 48px;
}
.hero-card-inner::after{
  content:"";position:absolute;right:-70px;top:-70px;
  width:260px;height:260px;border-radius:50%;
  background:var(--grad-soft);
  opacity:.85;
}
.hero-card-inner>*{position:relative;z-index:2}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.04em;
  color:var(--c-brand-deep);
  background:var(--c-surface-warm);
  border:1px solid #FFDCC9;
  padding:6px 14px;
  border-radius:var(--r-pill);
}
.hero-card h1{
  font-size:clamp(28px,4vw,46px);
  font-weight:800;
  line-height:1.2;
  letter-spacing:-.02em;
  margin:18px 0 14px;
}
.grad-text{background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{font-size:17px;color:var(--c-ink-2);max-width:640px}
.pill-list{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.pill-list li{
  font-size:14px;font-weight:600;color:var(--c-ink-2);
  background:var(--c-surface-warm);
  border:1px solid var(--c-line);
  border-radius:var(--r-pill);
  padding:8px 16px;
  transition:color .24s var(--ease),border-color .24s var(--ease),transform .24s var(--ease);
}
.pill-list li:hover{color:var(--c-brand-deep);border-color:#FFD3BC;transform:translateY(-2px)}

/* ---------- sections ---------- */
.section{padding:96px 0}
@media (max-width:1023px){.section{padding:72px 0}}
@media (max-width:767px){.section{padding:56px 0}}
.section-warm{background:var(--c-surface-warm)}
.section-head{max-width:720px}
.section-head h2{font-size:clamp(24px,3vw,34px);font-weight:800}
.section-head p{margin-top:14px;font-size:16px;color:var(--c-ink-2)}

/* ---------- layout + toc ---------- */
.layout-grid{
  display:grid;
  grid-template-columns:220px minmax(0,1fr);
  gap:48px;
  align-items:start;
}
@media (max-width:1023px){
  .layout-grid{grid-template-columns:1fr;gap:24px}
}
.toc{position:sticky;top:96px}
.toc-title{
  font-size:13px;font-weight:700;letter-spacing:.06em;
  color:var(--c-ink-3);
  margin-bottom:14px;
}
.toc-nav{display:flex;flex-direction:column;border-left:2px solid var(--c-line)}
.toc-nav a{
  position:relative;
  display:block;
  padding:10px 0 10px 18px;
  font-size:14.5px;
  font-weight:500;
  color:var(--c-ink-2);
  border-radius:0 10px 10px 0;
  transition:color .24s var(--ease),background .24s var(--ease);
}
.toc-nav a::before{
  content:"";
  position:absolute;left:-2px;top:50%;
  width:2px;height:0;border-radius:2px;
  background:var(--grad-brand);
  transform:translateY(-50%);
  transition:height .26s var(--ease);
}
.toc-nav a:hover{color:var(--c-brand);background:var(--c-surface-warm)}
.toc-nav a.active{color:var(--c-brand-deep);font-weight:700;background:var(--c-surface-warm)}
.toc-nav a.active::before{height:70%}
@media (max-width:1023px){
  .toc{position:static}
  .toc-title{display:none}
  .toc-nav{
    flex-direction:row;
    border-left:0;
    border-bottom:1px solid var(--c-line);
    padding-bottom:12px;
    gap:8px;
    overflow-x:auto;
    scrollbar-width:none;
  }
  .toc-nav::-webkit-scrollbar{display:none}
  .toc-nav a{
    padding:9px 16px;
    border-radius:var(--r-pill);
    background:var(--c-surface-warm);
    white-space:nowrap;
    font-size:14px;
  }
  .toc-nav a::before{display:none}
  .toc-nav a.active{background:var(--grad-brand);color:#fff}
}

/* ---------- content flow ---------- */
.flow-heading{
  font-size:clamp(22px,2.6vw,30px);
  font-weight:800;
  margin-bottom:24px;
}
.flow-block{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  padding:32px;
  box-shadow:var(--sh-1);
  margin-bottom:28px;
  scroll-margin-top:110px;
  transition:box-shadow .32s var(--ease),transform .32s var(--ease);
}
.flow-block:last-child{margin-bottom:0}
.flow-block:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
.flow-block h3{
  display:flex;align-items:center;gap:12px;
  font-size:21px;font-weight:700;
}
.flow-block h3 .idx{
  flex:none;
  font-size:13px;font-weight:800;
  color:#fff;
  background:var(--grad-brand);
  border-radius:10px;
  padding:3px 10px;
  letter-spacing:.02em;
}
.flow-block p{margin-top:14px;color:var(--c-ink-2);font-size:16px}
.points{margin-top:18px;display:grid;gap:10px}
.points li{
  position:relative;
  padding-left:20px;
  font-size:15.5px;
  color:var(--c-ink-2);
}
.points li::before{
  content:"";
  position:absolute;left:0;top:.72em;
  width:8px;height:8px;border-radius:50%;
  background:var(--grad-brand);
}
.flow-figure{
  margin-top:22px;
  border-radius:var(--r-md);
  overflow:hidden;
  border:1px solid var(--c-line);
}
.flow-figure img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  transition:transform .42s var(--ease);
}
.flow-figure:hover img{transform:scale(1.04)}

/* ---------- more cards ---------- */
.more-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin-top:34px}
@media (max-width:767px){.more-grid{grid-template-columns:1fr}}
.more-card{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:20px;
  padding:24px 26px;
  box-shadow:var(--sh-1);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease);
}
.more-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.more-card h3{font-size:18px}
.more-card .desc{display:block;margin-top:6px;font-size:14px;color:var(--c-ink-3);font-weight:400}
.more-card .arrow{
  flex:none;
  width:40px;height:40px;
  border-radius:var(--r-pill);
  display:grid;place-items:center;
  background:var(--c-surface-warm);
  color:var(--c-brand);
  transition:background .3s var(--ease),color .3s var(--ease),transform .3s var(--ease);
}
.more-card:hover .arrow{background:var(--grad-brand);color:#fff;transform:translateX(2px)}

/* ---------- faq ---------- */
.faq-list{
  margin-top:34px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:20px;
  overflow:hidden;
  box-shadow:var(--sh-1);
}
.faq-item+.faq-item{border-top:1px solid var(--c-line)}
.faq-q{
  display:flex;align-items:center;gap:14px;
  width:100%;
  min-height:60px;
  padding:16px 24px;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--c-ink);
  transition:background .24s var(--ease);
}
.faq-q:hover{background:var(--c-surface-warm)}
.faq-q:focus-visible{outline:3px solid rgba(255,106,31,.35);outline-offset:-3px}
.faq-num{
  flex:none;
  font-size:15px;font-weight:800;
  background:var(--grad-brand);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.faq-arrow{
  margin-left:auto;
  color:var(--c-ink-3);
  transition:transform .26s var(--ease),color .26s var(--ease);
}
.faq-item.open .faq-arrow{transform:rotate(180deg);color:var(--c-brand)}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .3s var(--ease)}
.faq-a>div{overflow:hidden}
.faq-item.open .faq-a{grid-template-rows:1fr}
.faq-a p{padding:0 24px 20px 56px;font-size:15.5px;line-height:1.85;color:var(--c-ink-2)}

/* ---------- cta ---------- */
.cta-box{
  position:relative;
  overflow:hidden;
  background:var(--grad-soft);
  border:1px solid #FFE0D2;
  border-radius:var(--r-cta);
  padding:54px 40px;
  text-align:center;
}
.cta-box::after{
  content:"";position:absolute;right:-80px;bottom:-100px;
  width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,46,126,.18),rgba(255,46,126,0) 70%);
}
.cta-box>*{position:relative;z-index:2}
.cta-box h2{font-size:clamp(24px,3vw,34px);font-weight:800}
.cta-box p{margin-top:14px;font-size:16px;color:var(--c-ink-2)}
.cta-actions{display:flex;justify-content:center;flex-wrap:wrap;gap:14px;margin-top:30px}
@media (max-width:519px){
  .cta-box{padding:40px 24px}
  .cta-actions{flex-direction:column;gap:12px}
  .cta-actions .btn{width:100%}
}

/* ---------- footer ---------- */
.site-footer{
  background:var(--c-ink);
  color:rgba(255,255,255,.72);
  padding:72px 0 28px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:40px;
}
@media (max-width:1023px){.footer-grid{grid-template-columns:1fr 1fr;gap:32px}}
@media (max-width:519px){.footer-grid{grid-template-columns:1fr;gap:28px}}
.site-footer .logo{color:#fff;font-size:16px}
.footer-brand p{
  margin-top:16px;
  max-width:320px;
  font-size:14px;
  line-height:1.8;
  color:rgba(255,255,255,.62);
}
.footer-qr{
  margin-top:20px;
  width:122px;height:122px;
  border-radius:var(--r-md);
  border:1px dashed rgba(255,255,255,.28);
  background:rgba(255,255,255,.05);
  display:grid;place-items:center;
  text-align:center;
  font-size:13px;
  line-height:1.6;
  color:rgba(255,255,255,.6);
}
.footer-col{display:flex;flex-direction:column;gap:10px}
.footer-col h4{
  position:relative;
  padding-bottom:12px;
  font-size:15px;
  font-weight:600;
  color:#fff;
}
.footer-col h4::after{
  content:"";position:absolute;left:0;bottom:0;
  width:24px;height:2px;border-radius:2px;
  background:var(--grad-brand);
}
.footer-col a,.footer-col span{
  font-size:14px;
  color:rgba(255,255,255,.66);
  transition:color .2s var(--ease);
}
.footer-col a:hover{color:var(--c-brand)}
.footer-bottom{
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;
  margin-top:48px;
  padding-top:22px;
  border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;
  color:rgba(255,255,255,.5);
}

/* ---------- motion ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .48s var(--ease),transform .48s var(--ease)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

@media (max-width:1023px){
  .nav-links,.nav-actions .icon-btn,.nav-actions .btn{display:none}
  .burger{display:grid}
  .page-hero{padding:126px 0 56px}
  .hero-card-inner{padding:34px 28px}
}
@media (max-width:767px){
  .logo{font-size:15px}
  .logo-mark{width:30px;height:30px;font-size:15px;border-radius:10px}
  .flow-block{padding:24px}
  .flow-block h3{font-size:19px}
  .faq-a p{padding-left:24px}
}
@media (max-width:479px){
  .hero-card-inner{padding:26px 20px}
  .page-hero{padding:118px 0 48px}
}