/* roulang page: index */
:root{
  --ink:#16181D;
  --ink-2:#0E1013;
  --accent:#D6402A;
  --accent-h:#B8341F;
  --accent-2:#1E6B5C;
  --bg:#F6F4EF;
  --bg-2:#EFEBE3;
  --card:#FFFFFF;
  --line:#E4DFD5;
  --text:#3A3A3F;
  --text-2:#6E6E76;
  --text-3:#98938A;
  --r-sm:8px;
  --r:12px;
  --r-lg:18px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(22,24,29,.05),0 8px 24px rgba(22,24,29,.06);
  --sh-2:0 16px 40px rgba(22,24,29,.12);
  --t:220ms cubic-bezier(.22,.61,.36,1);
  --font-display:"Songti SC","Noto Serif SC","Source Han Serif SC","STSong",serif;
  --font-sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  --header-h:68px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--ink);text-decoration:none;transition:color var(--t)}
a:hover{color:var(--accent)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink);font-family:var(--font-display);letter-spacing:-.01em}
h1{font-size:clamp(34px,4.4vw,58px);line-height:1.12;letter-spacing:-.02em;font-weight:800}
h2{font-size:clamp(26px,3vw,38px);line-height:1.2;font-weight:700}
h3{font-size:21px;line-height:1.4;font-weight:600}
p{margin:0 0 1.2em}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

.grid-container{max-width:1240px;padding-left:24px;padding-right:24px}
.section{padding:96px 0}
.section-tight{padding:72px 0}
.eyebrow{
  display:inline-block;font-family:var(--font-sans);font-size:13px;font-weight:600;
  letter-spacing:.14em;color:var(--accent-2);text-transform:uppercase;margin-bottom:14px;
}
.lead{max-width:640px;color:var(--text-2);font-size:16px}
.muted{color:var(--text-2)}
.tiny{font-size:13px;color:var(--text-3)}

/* header */
.site-header{
  position:sticky;top:0;z-index:60;height:var(--header-h);
  background:rgba(246,244,239,.86);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--t);
}
.site-header.is-scrolled{box-shadow:var(--sh-1)}
.nav-inner{display:flex;align-items:center;height:var(--header-h);gap:24px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{width:30px;height:30px;flex:0 0 auto}
.brand-text{font-size:18px;font-weight:700;color:var(--ink);letter-spacing:-.01em;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:8px;flex:1 1 auto}
.nav-links a{
  position:relative;font-size:15px;color:var(--text);padding:6px 0;white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--accent);
  transform:scaleX(0);transform-origin:center;transition:transform var(--t);
}
.nav-links a:hover{color:var(--ink)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a[aria-current="page"]{color:var(--ink);font-weight:600}
.nav-links a[aria-current="page"]::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;margin-left:auto}
.icon-btn{
  width:40px;height:40px;border-radius:var(--r-pill);border:1px solid var(--line);
  background:var(--card);display:inline-flex;align-items:center;justify-content:center;
  color:var(--ink);cursor:pointer;transition:border-color var(--t),background var(--t),color var(--t);
}
.icon-btn:hover{border-color:rgba(214,64,42,.4);color:var(--accent)}
.icon-btn svg{width:18px;height:18px}
.menu-btn{display:none}
.menu-btn svg{width:20px;height:20px}

/* buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:10px;padding:14px 26px;font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;transition:background var(--t),color var(--t),border-color var(--t),transform var(--t),box-shadow var(--t);
}
.btn-primary{background:var(--accent);color:#FBF8F3}
.btn-primary:hover{background:var(--accent-h);color:#fff;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;color:var(--ink);border-color:rgba(22,24,29,.28)}
.btn-ghost:hover{background:var(--ink);color:#F6F4EF;border-color:var(--ink)}
.btn-sm{padding:11px 20px;font-size:14px}
.btn-block{width:100%}
.text-link{
  display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--ink);
  position:relative;
}
.text-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-3px;height:1px;background:var(--accent);
  transform:scaleX(0);transform-origin:left;transition:transform var(--t);
}
.text-link:hover{color:var(--accent)}
.text-link:hover::after{transform:scaleX(1)}

/* hero */
.hero{padding:56px 0 88px;position:relative;overflow:hidden}
.hero-grid{align-items:center}
.hero-content{padding-right:16px}
.hero h1{margin-bottom:20px;max-width:15em}
.hero-sub{font-size:17px;color:var(--text-2);max-width:34em;margin-bottom:28px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:20px}
.hero-trust{font-size:13px;color:var(--text-3)}
.hero-visual{position:relative}
.hero-figure{
  position:relative;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);
  background:var(--bg-2);aspect-ratio:4/3;
}
.hero-figure img{width:100%;height:100%;object-fit:cover}
.hero-float{
  position:absolute;left:-24px;bottom:32px;background:rgba(255,255,255,.9);
  border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--sh-1);
  padding:16px 20px;display:flex;gap:24px;backdrop-filter:blur(6px);
}
.hero-float div{min-width:78px}
.hero-float .k{font-family:var(--font-display);font-size:26px;font-weight:800;color:var(--ink);line-height:1.1;font-variant-numeric:tabular-nums}
.hero-float .v{font-size:12px;color:var(--text-3);margin-top:2px}
.trust-tags{display:flex;gap:10px;margin-top:56px;overflow-x:auto;padding-bottom:4px}
.trust-tags span{
  flex:0 0 auto;font-size:13px;color:var(--text-2);border:1px solid var(--line);
  background:var(--card);border-radius:var(--r-pill);padding:6px 14px;
}

/* pain */
.pain-list{border-top:1px solid var(--line)}
.pain-item{
  border-bottom:1px solid var(--line);padding:20px 22px;display:flex;gap:20px;align-items:flex-start;
  position:relative;transition:background var(--t);
}
.pain-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--accent);
  transform:scaleY(0);transform-origin:top;transition:transform var(--t);
}
.pain-item:hover{background:rgba(255,255,255,.7)}
.pain-item:hover::before{transform:scaleY(1)}
.pain-num{font-family:var(--font-display);font-size:15px;font-weight:700;color:var(--accent-2);padding-top:4px}
.pain-text{font-size:16px;color:var(--text)}
.pain-note{font-size:13px;color:var(--text-3);margin-top:4px}

/* solution */
.solution-big,.solution-small{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r);
  box-shadow:var(--sh-1);transition:transform var(--t),box-shadow var(--t);height:100%;
}
.solution-big{overflow:hidden;display:flex;flex-direction:column}
.solution-big .thumb{overflow:hidden;aspect-ratio:16/10;background:var(--bg-2)}
.solution-big .thumb img{width:100%;height:100%;object-fit:cover;transition:transform var(--t)}
.solution-big:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.solution-big:hover .thumb img{transform:scale(1.04)}
.solution-body{padding:24px}
.solution-small{padding:26px 24px;display:flex;flex-direction:column;gap:12px}
.solution-small:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(214,64,42,.35)}
.solution-small .idx{font-family:var(--font-display);font-size:13px;font-weight:700;color:var(--accent-2);letter-spacing:.1em}
.solution-small p{font-size:15px;color:var(--text-2);margin:0}

/* stats */
.stats{background:var(--ink);color:#F6F4EF;padding:88px 0}
.stats h2{color:#F6F4EF;margin-bottom:8px}
.stats .lead{color:rgba(246,244,239,.66)}
.stat-grid{margin-top:44px}
.stat{border-top:1px solid rgba(255,255,255,.16);padding-top:22px}
.stat .num{font-family:var(--font-display);font-size:clamp(48px,6vw,76px);font-weight:800;line-height:1;font-variant-numeric:tabular-nums;color:#F6F4EF}
.stat .unit{font-size:15px;color:var(--accent-2);margin-left:6px;font-weight:600}
.stat .label{font-size:14px;color:rgba(246,244,239,.66);margin-top:10px}

/* posts */
.post-feature{
  position:relative;background:var(--card);border:1px solid var(--line);border-radius:var(--r);
  box-shadow:var(--sh-1);overflow:hidden;display:flex;flex-wrap:wrap;transition:border-color var(--t),transform var(--t),box-shadow var(--t);
}
.post-feature:hover{border-color:rgba(214,64,42,.35);transform:translateY(-4px);box-shadow:var(--sh-2)}
.post-feature .pf-media{flex:0 0 44%;max-width:44%;overflow:hidden;background:var(--bg-2);min-height:230px}
.post-feature .pf-media img{width:100%;height:100%;object-fit:cover;transition:transform var(--t)}
.post-feature:hover .pf-media img{transform:scale(1.04)}
.post-feature .pf-body{flex:1 1 56%;padding:28px}
.post-feature h3{font-size:22px;margin-bottom:12px}
.post-feature p{font-size:15px;color:var(--text-2)}
.post-list{border-top:1px solid var(--line)}
.post-row{
  position:relative;display:flex;gap:20px;align-items:flex-start;justify-content:space-between;
  padding:22px 4px;border-bottom:1px solid var(--line);transition:background var(--t);
}
.post-row:hover{background:rgba(255,255,255,.72)}
.post-row h3{font-size:17px;font-weight:600;font-family:var(--font-sans);margin-bottom:6px}
.post-row:hover h3{color:var(--accent)}
.post-row .excerpt{font-size:14px;color:var(--text-2);margin:0}
.post-meta{display:flex;align-items:center;gap:12px;margin-top:10px;font-size:13px;color:var(--text-3)}
.tag{
  display:inline-block;font-size:12px;color:var(--accent-2);background:rgba(30,107,92,.08);
  border-radius:var(--r-pill);padding:3px 10px;line-height:1.5;
}
.cover-link{position:absolute;inset:0;z-index:2}
.empty-state{
  min-height:180px;border:1px dashed var(--line);border-radius:var(--r);background:rgba(255,255,255,.6);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;text-align:center;padding:32px;
}
.empty-state svg{width:34px;height:34px;color:var(--text-3)}
.empty-state p{margin:0;font-size:15px;color:var(--text-2)}

/* form */
.contact-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);padding:36px;
}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink);margin-bottom:8px}
.field input,.field select,.field textarea{
  width:100%;background:#fff;border:1px solid var(--line);border-radius:10px;
  padding:0 14px;height:48px;font-size:15px;color:var(--text);font-family:inherit;
  transition:border-color var(--t),box-shadow var(--t);
}
.field textarea{height:auto;padding:12px 14px;min-height:120px;resize:vertical;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3)}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--ink);box-shadow:0 0 0 3px rgba(22,24,29,.08);
}
.check{display:flex;align-items:flex-start;gap:10px;font-size:12px;color:var(--text-3);line-height:1.6}
.check input{width:18px;height:18px;accent-color:var(--accent);margin-top:2px;flex:0 0 auto}
.form-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin-top:22px}
.contact-aside{background:var(--bg-2);border-radius:var(--r-lg);padding:32px;height:100%}
.contact-aside li{display:flex;gap:12px;padding:14px 0;border-bottom:1px solid var(--line);font-size:15px;color:var(--text-2)}
.contact-aside li:last-child{border-bottom:none}
.contact-aside .dot{width:8px;height:8px;border-radius:50%;background:var(--accent-2);margin-top:10px;flex:0 0 auto}

/* modal */
.modal-mask{
  position:fixed;inset:0;background:rgba(14,16,19,.62);z-index:90;display:none;
  align-items:center;justify-content:center;padding:24px;
}
.modal-mask.is-open{display:flex}
.modal-panel{
  background:#fff;border-radius:var(--r-lg);max-width:520px;width:100%;padding:32px;position:relative;
  box-shadow:var(--sh-2);
}
.modal-close{
  position:absolute;top:14px;right:14px;width:36px;height:36px;border-radius:50%;
  border:1px solid var(--line);background:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;color:var(--text-2);
}
.modal-close:hover{border-color:rgba(214,64,42,.4);color:var(--accent)}
.modal-close svg{width:16px;height:16px}

/* faq */
.faq-item{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r);
  margin-bottom:12px;overflow:hidden;position:relative;
}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--accent);
  transform:scaleY(0);transform-origin:top;transition:transform var(--t);
}
.faq-item[open]::before{transform:scaleY(1)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 56px 20px 24px;font-size:17px;font-weight:600;color:var(--ink);
  position:relative;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"";position:absolute;right:24px;top:50%;width:14px;height:14px;margin-top:-7px;
  background:
    linear-gradient(var(--accent-2),var(--accent-2)) center/14px 2px no-repeat,
    linear-gradient(var(--accent-2),var(--accent-2)) center/2px 14px no-repeat;
  transition:transform var(--t);
}
.faq-item[open] summary::after{transform:rotate(180deg)}
.faq-body{padding:0 24px 22px;font-size:15px;line-height:1.8;color:var(--text-2)}

/* cta */
.cta-band{background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.cta-band h2{margin-bottom:10px}
.cta-band .lead{margin-bottom:24px}

/* footer */
.site-footer{background:var(--ink-2);color:rgba(255,255,255,.72);padding:72px 0 0;font-size:14px}
.site-footer h4{color:#fff;font-family:var(--font-sans);font-size:15px;font-weight:600;margin-bottom:16px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;color:#fff;font-size:17px;font-weight:700}
.footer-brand .brand-mark{width:26px;height:26px}
.site-footer p{color:rgba(255,255,255,.62);font-size:13px;line-height:1.8;max-width:32em}
.footer-links li{margin-bottom:10px}
.footer-links a{color:rgba(255,255,255,.72);font-size:14px}
.footer-links a:hover{color:#fff;text-decoration:underline}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);margin-top:56px;padding:20px 0;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.5);
}

/* drawer */
.drawer{
  position:fixed;inset:0;background:var(--bg);z-index:80;padding:24px;display:none;flex-direction:column;
}
.drawer.is-open{display:flex}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:32px}
.drawer nav{display:flex;flex-direction:column;gap:20px}
.drawer nav a{font-size:19px;font-weight:600;color:var(--ink)}
.drawer .btn{margin-top:auto}

/* reveal */
.js-ready .reveal{opacity:0;transform:translateY(12px);transition:opacity 420ms cubic-bezier(.22,.61,.36,1),transform 420ms cubic-bezier(.22,.61,.36,1)}
.js-ready .reveal.is-visible{opacity:1;transform:none}

@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
  .js-ready .reveal{opacity:1;transform:none}
}

@media screen and (max-width:1023px){
  .section{padding:72px 0}
  .nav-links{display:none}
  .menu-btn{display:inline-flex}
  .nav-actions .btn-primary{display:none}
  .hero{padding:40px 0 64px}
  .hero-content{padding-right:0;margin-bottom:40px}
  .hero-float{left:16px;bottom:16px}
  .post-feature .pf-media{flex:0 0 100%;max-width:100%;min-height:200px}
  .post-feature .pf-body{flex:1 1 100%}
}
@media screen and (max-width:639px){
  .grid-container{padding-left:20px;padding-right:20px}
  .section,.section-tight{padding:48px 0}
  body{font-size:15px}
  .hero h1{font-size:clamp(30px,8.6vw,40px)}
  .hero-sub{font-size:16px}
  .hero-cta .btn{width:100%}
  .hero-float{position:static;margin-top:14px;left:auto;bottom:auto;width:100%;justify-content:space-between}
  .stats{padding:56px 0}
  .contact-card{padding:24px}
  .contact-aside{margin-top:24px}
  .post-row{flex-direction:column;gap:8px}
  .post-row .excerpt{display:none}
  .faq-item summary{padding:18px 48px 18px 20px;font-size:16px}
  .modal-mask{padding:0;align-items:flex-end}
  .modal-panel{border-radius:var(--r-lg) var(--r-lg) 0 0;max-width:100%;padding:28px 22px}
}

/* roulang page: article */
:root{
  --ink:#16181D;--ink-2:#0E1013;
  --accent:#D6402A;--accent-h:#B8341F;--accent-2:#1E6B5C;
  --bg:#F6F4EF;--bg-2:#EFEBE3;
  --card:#FFFFFF;--line:#E4DFD5;
  --text:#3A3A3F;--text-2:#6E6E76;--text-3:#98938A;
  --r-sm:8px;--r:12px;--r-lg:18px;--r-pill:999px;
  --sh-1:0 1px 2px rgba(22,24,29,.05),0 8px 24px rgba(22,24,29,.06);
  --sh-2:0 16px 40px rgba(22,24,29,.12);
  --t:220ms cubic-bezier(.22,.61,.36,1);
  --font-display:"Songti SC","Noto Serif SC","Source Han Serif SC","STSong",serif;
  --font-sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
}
*,*::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:var(--font-sans);font-size:16px;line-height:1.85;
  overflow-x:hidden;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--ink);text-decoration:none;transition:color var(--t);}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4{font-family:var(--font-display);color:var(--ink);margin:0;font-weight:700;}
p{margin:0 0 1em;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px;}
::selection{background:rgba(214,64,42,.16);}

.grid-container{max-width:1240px;padding-left:24px;padding-right:24px;margin:0 auto;}
@media (max-width:639px){.grid-container{padding-left:20px;padding-right:20px;}}

.skip-link{position:absolute;left:-9999px;top:0;background:var(--ink);color:#fff;padding:10px 16px;border-radius:0 0 var(--r-sm) 0;z-index:120;}
.skip-link:focus{left:0;color:#fff;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(246,244,239,.86);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--t),background var(--t);
}
.site-header.is-scrolled{box-shadow:var(--sh-1);background:rgba(246,244,239,.95);}
.nav-inner{display:flex;align-items:center;gap:24px;height:68px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;line-height:0;}
.brand-text{font-size:18px;font-weight:700;color:var(--ink);letter-spacing:-.01em;font-family:var(--font-sans);}
.nav-links{display:flex;align-items:center;gap:26px;margin-right:auto;}
.nav-links a{
  position:relative;font-size:15px;color:var(--text);padding:6px 0;white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;left:50%;right:50%;bottom:0;height:2px;background:var(--accent);
  transition:left var(--t),right var(--t);
}
.nav-links a:hover{color:var(--ink);}
.nav-links a:hover::after{left:0;right:0;}
.nav-links a[aria-current="page"]{color:var(--ink);font-weight:600;}
.nav-links a[aria-current="page"]::after{left:0;right:0;}
.nav-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.icon-btn{
  width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-pill);color:var(--ink);
  cursor:pointer;transition:border-color var(--t),transform var(--t),box-shadow var(--t);
}
.icon-btn svg{width:19px;height:19px;}
.icon-btn:hover{border-color:var(--ink);transform:translateY(-1px);box-shadow:var(--sh-1);}
.icon-btn:active{transform:translateY(0);}
.menu-btn{display:none;}
@media (max-width:1023px){
  .nav-links{display:none;}
  .menu-btn{display:inline-flex;}
}
@media (max-width:639px){
  .nav-inner{height:56px;gap:12px;}
  .brand-text{font-size:16px;}
  .nav-actions .btn-primary{display:none;}
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:10px;padding:14px 26px;font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:all var(--t);
  font-family:var(--font-sans);line-height:1.2;text-align:center;
}
.btn-primary{background:var(--accent);color:#FBF7F1;}
.btn-primary:hover{background:var(--accent-h);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(214,64,42,.24);}
.btn-primary:active{transform:translateY(0);box-shadow:none;}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink);}
.btn-ghost:hover{background:var(--ink);color:var(--bg);transform:translateY(-1px);}
.btn-sm{padding:10px 18px;font-size:14px;}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none;}

/* ---------- 移动抽屉 ---------- */
.mobile-drawer{
  position:fixed;inset:0;z-index:90;background:var(--bg);
  transform:translateX(102%);transition:transform var(--t);
  display:flex;flex-direction:column;padding:22px 20px 40px;overflow-y:auto;
}
.mobile-drawer.is-open{transform:translateX(0);}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:28px;}
.drawer-links{display:flex;flex-direction:column;gap:20px;margin-bottom:32px;}
.drawer-links a{font-size:18px;color:var(--ink);padding:8px 0;border-bottom:1px solid var(--line);}
.drawer-links a:hover{color:var(--accent);}
.drawer-note{font-size:13px;color:var(--text-3);margin-top:16px;}

/* ---------- 文章头 ---------- */
.article-head{
  background:var(--bg-2);border-bottom:1px solid var(--line);
  padding:calc(68px + 34px) 0 52px;
}
@media (max-width:1023px){.article-head{padding:56px 0 40px;}}
@media (max-width:639px){.article-head{padding:40px 0 32px;}}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:22px;}
.breadcrumb a{color:var(--text-2);}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb .sep{color:var(--line);}
.breadcrumb .current{max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--text-2);}
@media (max-width:639px){.breadcrumb .current{max-width:180px;}}
.kicker{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  color:var(--accent);letter-spacing:.04em;margin-bottom:14px;
}
.kicker::before{content:"";width:18px;height:2px;background:var(--accent);display:inline-block;}
.article-head h1{
  font-size:clamp(30px,3.6vw,44px);line-height:1.24;letter-spacing:-.015em;
  max-width:900px;font-weight:800;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:22px;font-size:13px;color:var(--text-2);}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--text-3);display:inline-block;}
.article-meta time{font-variant-numeric:tabular-nums;}

/* ---------- 主体布局 ---------- */
.section{padding:64px 0;}
@media (max-width:1023px){.section{padding:48px 0;}}
@media (max-width:639px){.section{padding:36px 0;}}
.article-wrap{padding-top:56px;}
@media (max-width:639px){.article-wrap{padding-top:36px;}}

/* ---------- 正文排版 ---------- */
.article-body{font-size:16.5px;line-height:1.9;color:var(--text);max-width:820px;}
.article-body > p:first-of-type{font-size:18px;line-height:1.85;color:#2C2C31;}
.article-body p{margin:0 0 1.2em;}
.article-body h2{
  font-size:clamp(22px,2.4vw,27px);line-height:1.35;margin:2em 0 .75em;
  padding-left:14px;position:relative;scroll-margin-top:96px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.38em;width:4px;height:18px;
  background:var(--accent);border-radius:2px;
}
.article-body h3{font-size:20px;line-height:1.45;margin:1.7em 0 .6em;font-weight:600;scroll-margin-top:96px;}
.article-body h4{font-size:17px;margin:1.4em 0 .5em;font-weight:600;}
.article-body a{color:var(--ink);text-decoration:underline;text-underline-offset:3px;text-decoration-color:rgba(22,24,29,.35);}
.article-body a:hover{color:var(--accent);text-decoration-color:var(--accent);}
.article-body ul{list-style:none;padding-left:0;margin:0 0 1.3em;}
.article-body ul li{position:relative;padding-left:20px;margin-bottom:.5em;}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:.72em;width:6px;height:6px;
  border-radius:50%;background:var(--accent-2);opacity:.7;
}
.article-body ol{list-style:decimal;padding-left:1.4em;margin:0 0 1.3em;}
.article-body ol li{margin-bottom:.5em;padding-left:.2em;}
.article-body li::marker{color:var(--text-3);}
.article-body blockquote{
  margin:1.6em 0;padding:18px 22px;background:var(--bg-2);
  border-left:3px solid var(--ink);border-radius:0 var(--r) var(--r) 0;
  color:var(--text-2);font-size:15.5px;line-height:1.85;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:var(--r);margin:1.6em auto;height:auto;}
.article-body figure{margin:1.8em 0;}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px;}
.article-body table{
  width:100%;border-collapse:collapse;font-size:15px;margin:1.6em 0;
  display:block;overflow-x:auto;white-space:nowrap;
}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left;}
.article-body th{background:var(--bg-2);color:var(--ink);font-weight:600;}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.2em 0;}
.article-body code{background:var(--bg-2);border-radius:6px;padding:2px 6px;font-size:14px;}

/* ---------- 侧栏 ---------- */
.article-side{position:sticky;top:96px;align-self:flex-start;}
@media (max-width:1023px){.article-side{display:none;}}
.side-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r);
  padding:20px;box-shadow:var(--sh-1);margin-bottom:18px;
}
.side-title{font-size:15px;font-weight:700;color:var(--ink);margin-bottom:14px;font-family:var(--font-sans);}
.toc-list a{
  display:block;font-size:14px;color:var(--text-2);line-height:1.6;
  padding:8px 0 8px 12px;border-left:2px solid var(--line);
  transition:color var(--t),border-color var(--t);
}
.toc-list a:hover{color:var(--ink);}
.toc-list a.is-active{color:var(--accent);border-left-color:var(--accent);font-weight:600;}
.side-links li{margin-bottom:10px;}
.side-links a{font-size:14px;color:var(--text-2);display:inline-flex;align-items:center;gap:6px;}
.side-links a:hover{color:var(--accent);}
.side-links a::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--accent-2);opacity:.65;}

/* ---------- 标签行 ---------- */
.tag-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);max-width:820px;
}
.tag-row .tag-label{font-size:13px;color:var(--text-3);margin-right:2px;}
.tag{
  display:inline-flex;align-items:center;font-size:12.5px;line-height:1;
  padding:7px 12px;border-radius:var(--r-pill);
  background:rgba(30,107,92,.08);color:var(--accent-2);
  border:1px solid rgba(30,107,92,.16);transition:all var(--t);
}
.tag:hover{background:rgba(30,107,92,.14);}

/* ---------- 空态 ---------- */
.empty-state{
  max-width:620px;min-height:220px;margin:0 auto;text-align:center;
  border:1px dashed var(--line);border-radius:var(--r-lg);background:var(--card);
  padding:48px 28px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
}
.empty-state svg{width:44px;height:44px;color:var(--text-3);}
.empty-state h2{font-size:22px;}
.empty-state p{color:var(--text-2);font-size:15px;margin:0;}

/* ---------- 返回入口 ---------- */
.back-row{margin-top:40px;padding-top:28px;border-top:1px solid var(--line);max-width:820px;}

/* ---------- 相关推荐 ---------- */
.related{padding-top:0;}
.block-head{margin-bottom:32px;max-width:640px;}
.block-head h2{font-size:clamp(24px,2.6vw,32px);line-height:1.25;letter-spacing:-.01em;}
.block-head p{color:var(--text-2);font-size:15px;margin:10px 0 0;}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
@media (max-width:1023px){.related-grid{grid-template-columns:repeat(2,1fr);}}
@media (max-width:639px){.related-grid{grid-template-columns:1fr;gap:16px;}}
.rel-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r);
  overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(214,64,42,.35);}
.rel-card .thumb{aspect-ratio:16/10;overflow:hidden;background:var(--bg-2);}
.rel-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform 420ms cubic-bezier(.22,.61,.36,1);}
.rel-card:hover .thumb img{transform:scale(1.04);}
.rel-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.chip{
  align-self:flex-start;font-size:12px;line-height:1;padding:6px 10px;border-radius:var(--r-pill);
  background:rgba(30,107,92,.08);color:var(--accent-2);
}
.rel-body h3{font-size:18px;line-height:1.45;letter-spacing:-.005em;}
.rel-body p{font-size:14px;color:var(--text-2);margin:0;line-height:1.7;}
.rel-card:hover .rel-body h3{color:var(--accent);}

/* ---------- CTA 条 ---------- */
.cta-band{background:var(--ink);color:#F4F1EA;padding:72px 0;}
@media (max-width:1023px){.cta-band{padding:56px 0;}}
@media (max-width:639px){.cta-band{padding:44px 0;}}
.cta-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;}
.cta-inner h2{color:#FBF8F2;font-size:clamp(24px,2.6vw,32px);line-height:1.3;max-width:560px;}
.cta-inner p{color:rgba(244,241,234,.72);font-size:15px;margin:12px 0 0;max-width:560px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}
.cta-band .btn-ghost{color:#F4F1EA;border-color:rgba(244,241,234,.5);}
.cta-band .btn-ghost:hover{background:#F4F1EA;color:var(--ink);border-color:#F4F1EA;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-2);color:rgba(255,255,255,.72);padding:72px 0 0;}
@media (max-width:639px){.site-footer{padding:48px 0 0;}}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand span:last-child{color:#fff;font-size:17px;font-weight:700;}
.site-footer p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.6);max-width:300px;}
.site-footer h4{color:#fff;font-size:15px;font-family:var(--font-sans);margin-bottom:16px;font-weight:600;}
.footer-links li{margin-bottom:10px;}
.footer-links a{color:rgba(255,255,255,.72);font-size:14px;}
.footer-links a:hover{color:#fff;text-decoration:underline;}
.site-footer .tiny{font-size:12px;}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.45);
}
@media (max-width:639px){.footer-bottom{flex-direction:column;gap:6px;}}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 420ms ease,transform 420ms cubic-bezier(.22,.61,.36,1);}
.reveal.is-visible{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: category1 */
:root{
  --ink:#16181D;
  --ink-2:#0E1013;
  --accent:#D6402A;
  --accent-h:#B8341F;
  --accent-2:#1E6B5C;
  --bg:#F6F4EF;
  --bg-2:#EFEBE3;
  --card:#FFFFFF;
  --line:#E4DFD5;
  --text:#3A3A3F;
  --text-2:#6E6E76;
  --text-3:#98938A;
  --r-sm:8px;
  --r:12px;
  --r-lg:18px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(22,24,29,.05),0 8px 24px rgba(22,24,29,.06);
  --sh-2:0 16px 40px rgba(22,24,29,.12);
  --t:220ms cubic-bezier(.22,.61,.36,1);
  --font-display:"Songti SC","Noto Serif SC","Source Han Serif SC","STSong",serif;
  --font-sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.25}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
input,select,textarea{font-family:inherit;font-size:15px}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
::selection{background:rgba(214,64,42,.16)}

.grid-container{max-width:1240px;padding-left:24px;padding-right:24px;margin-left:auto;margin-right:auto}
@media screen and (max-width:639px){
  .grid-container{padding-left:20px;padding-right:20px}
}

/* ============ 通用排版 ============ */
.sec{padding:96px 0}
.sec-tight{padding:72px 0}
.sec-alt{background:var(--bg-2)}
.sec-dark{background:var(--ink);color:rgba(255,255,255,.78)}
.sec-dark h2,.sec-dark h3{color:#fff}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.14em;color:var(--accent-2);
  font-weight:600;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--accent);display:block}
.sec-title{font-family:var(--font-display);font-size:clamp(26px,3vw,38px);letter-spacing:-.01em}
.sec-lead{max-width:640px;color:var(--text-2);margin-top:14px;font-size:16px}
.sec-head{margin-bottom:48px}
.sec-head.split{display:flex;flex-wrap:wrap;gap:24px;align-items:flex-end;justify-content:space-between}
.rule{height:1px;background:var(--line);border:0;margin:0}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(246,244,239,.86);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--t),background var(--t);
}
.site-header.is-scrolled{box-shadow:var(--sh-1)}
.nav-inner{
  display:flex;align-items:center;gap:28px;
  height:68px;
}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{display:inline-flex;line-height:0}
.brand-text{font-size:18px;font-weight:700;color:var(--ink);letter-spacing:-.01em;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:26px;flex:1 1 auto}
.nav-links a{
  position:relative;font-size:15px;color:var(--text);padding:6px 0;
  transition:color var(--t);
}
.nav-links a::after{
  content:"";position:absolute;left:50%;right:50%;bottom:0;height:2px;
  background:var(--accent);transition:left var(--t),right var(--t);
}
.nav-links a:hover{color:var(--ink)}
.nav-links a:hover::after{left:0;right:0}
.nav-links a[aria-current="page"]{color:var(--ink);font-weight:600}
.nav-links a[aria-current="page"]::after{left:0;right:0}
.nav-actions{display:flex;align-items:center;gap:12px;flex-shrink:0;margin-left:auto}
.icon-btn{
  width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);background:var(--card);border-radius:var(--r-pill);
  color:var(--ink);transition:background var(--t),color var(--t),border-color var(--t),transform var(--t);
}
.icon-btn svg{width:19px;height:19px}
.icon-btn:hover{background:var(--ink);color:#fff;border-color:var(--ink);transform:translateY(-1px)}
.menu-btn{display:none}

/* 移动抽屉 */
.mobile-drawer{
  position:fixed;inset:0;z-index:2000;background:var(--bg);
  padding:22px 20px 32px;display:none;flex-direction:column;
}
.mobile-drawer.is-open{display:flex}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:34px}
.drawer-nav{display:flex;flex-direction:column;gap:20px}
.drawer-nav a{font-size:19px;font-weight:600;color:var(--ink);padding:6px 0;border-bottom:1px solid var(--line)}
.drawer-nav a[aria-current="page"]{color:var(--accent)}
.drawer-cta{margin-top:auto;padding-top:28px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:10px;padding:14px 26px;font-size:15px;font-weight:600;
  border:1px solid transparent;transition:all var(--t);line-height:1.2;
}
.btn-primary{background:var(--accent);color:#FDFBF7;border-color:var(--accent)}
.btn-primary:hover{background:var(--accent-h);border-color:var(--accent-h);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{background:var(--ink);color:#F6F4EF;border-color:var(--ink);transform:translateY(-1px)}
.btn-sm{padding:10px 18px;font-size:14px;border-radius:var(--r-sm)}
.btn[disabled]{opacity:.5;cursor:not-allowed;transform:none}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--accent);
  position:relative;padding-bottom:2px;
}
.text-link::after{
  content:"";position:absolute;left:0;bottom:0;width:0;height:1px;background:var(--accent);
  transition:width var(--t);
}
.text-link:hover::after{width:100%}
.text-link svg{width:14px;height:14px;transition:transform var(--t)}
.text-link:hover svg{transform:translateX(3px)}

/* ============ Hero ============ */
.hero{
  padding:96px 0 88px;
  background:
    radial-gradient(900px 420px at 88% -8%,rgba(30,107,92,.10),transparent 60%),
    radial-gradient(600px 320px at 4% 8%,rgba(214,64,42,.07),transparent 62%),
    var(--bg);
}
.hero h1{
  font-family:var(--font-display);
  font-size:clamp(32px,4.2vw,52px);
  line-height:1.14;letter-spacing:-.02em;font-weight:800;
  margin-bottom:20px;
}
.hero-sub{font-size:17px;line-height:1.8;color:var(--text-2);max-width:520px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-note{
  margin-top:22px;font-size:13px;color:var(--text-3);
  display:flex;align-items:center;gap:8px;
}
.hero-note svg{width:15px;height:15px;color:var(--accent-2);flex-shrink:0}
.hero-visual{position:relative}
.hero-visual img{
  width:100%;aspect-ratio:3/2;object-fit:cover;
  border-radius:var(--r-lg);box-shadow:var(--sh-2);
}
.float-card{
  position:absolute;left:-18px;bottom:26px;
  background:rgba(255,255,255,.92);
  border:1px solid var(--line);border-radius:var(--r);
  box-shadow:var(--sh-1);padding:16px 18px;
  display:flex;gap:24px;
  -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
}
.float-item strong{
  display:block;font-family:var(--font-display);
  font-size:26px;font-weight:800;color:var(--ink);line-height:1.1;
  font-variant-numeric:tabular-nums;
}
.float-item span{font-size:12px;color:var(--text-2)}
.hero-tags{
  display:flex;gap:10px;margin-top:36px;overflow-x:auto;
  scrollbar-width:none;padding-bottom:4px;
}
.hero-tags::-webkit-scrollbar{display:none}
.hero-tags span{
  flex:0 0 auto;font-size:13px;color:var(--text-2);
  border:1px solid var(--line);border-radius:var(--r-pill);
  padding:6px 14px;background:rgba(255,255,255,.7);white-space:nowrap;
}

/* ============ 卡片网格 ============ */
.card{
  position:relative;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r);box-shadow:var(--sh-1);
  display:flex;flex-direction:column;height:100%;overflow:hidden;
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(214,64,42,.35)}
.card-thumb{overflow:hidden;aspect-ratio:16/10;background:var(--bg-2)}
.card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 460ms cubic-bezier(.22,.61,.36,1)}
.card:hover .card-thumb img{transform:scale(1.04)}
.card-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1}
.card-tag{
  display:inline-flex;align-self:flex-start;align-items:center;
  font-size:12px;font-weight:600;color:var(--accent-2);
  background:rgba(30,107,92,.08);border-radius:var(--r-pill);
  padding:4px 12px;letter-spacing:.02em;
}
.card h3{font-size:20px;font-weight:600}
.card p{font-size:14.5px;color:var(--text-2);line-height:1.8}
.card-foot{margin-top:auto;padding-top:4px}
.card-index{
  font-family:var(--font-display);font-size:13px;font-weight:700;
  color:var(--text-3);letter-spacing:.16em;
}
.card--wide .card-inner{display:flex;flex-direction:column;height:100%}
@media screen and (min-width:1024px){
  .card--wide .card-inner{flex-direction:row}
  .card--wide .card-thumb{flex:0 0 48%;aspect-ratio:auto;min-height:288px}
  .card--wide .card-body{flex:1 1 auto;padding:28px 30px}
}

/* ============ 排查列表 ============ */
.check-list{border-top:1px solid var(--line)}
.check-item{
  position:relative;border-bottom:1px solid var(--line);
  padding:26px 24px 26px 30px;
  transition:background var(--t),padding-left var(--t);
}
.check-item::before{
  content:"";position:absolute;left:0;top:26px;bottom:26px;width:3px;
  background:var(--accent);transform:scaleY(0);transform-origin:top;
  transition:transform var(--t);
}
.check-item:hover{background:rgba(255,255,255,.72);padding-left:36px}
.check-item:hover::before{transform:scaleY(1)}
.check-item h3{font-size:18px;font-weight:600;margin-bottom:8px;display:flex;gap:14px;align-items:baseline}
.check-item h3 em{
  font-family:var(--font-display);font-style:normal;font-size:14px;
  color:var(--accent);font-weight:800;letter-spacing:.06em;
}
.check-item p{font-size:14.5px;color:var(--text-2);max-width:820px}

/* ============ 场景小卡 ============ */
.scene-card{
  background:rgba(255,255,255,.78);border:1px solid var(--line);
  border-radius:var(--r);padding:24px;height:100%;
  transition:transform var(--t),box-shadow var(--t),background var(--t);
}
.scene-card:hover{transform:translateY(-4px);box-shadow:var(--sh-1);background:#fff}
.scene-num{
  font-family:var(--font-display);font-size:22px;font-weight:800;
  color:var(--accent);line-height:1;display:block;margin-bottom:14px;
}
.scene-card h3{font-size:18px;font-weight:600;margin-bottom:10px}
.scene-card p{font-size:14.5px;color:var(--text-2)}

/* ============ 流程 ============ */
.flow{display:grid;gap:0}
.flow-step{
  position:relative;padding:0 0 34px 34px;border-left:1px solid var(--line);
}
.flow-step:last-child{border-left-color:transparent;padding-bottom:0}
.flow-step::before{
  content:"";position:absolute;left:-6px;top:8px;width:11px;height:11px;
  border-radius:50%;background:var(--card);border:2px solid var(--accent);
}
.flow-step h3{font-size:18px;font-weight:600;margin-bottom:8px}
.flow-step p{font-size:14.5px;color:var(--text-2);max-width:760px}

/* ============ FAQ ============ */
.faq-list{display:grid;gap:12px;max-width:900px}
.faq-item{
  position:relative;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r);overflow:hidden;transition:border-color var(--t),box-shadow var(--t);
}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
  background:var(--accent);transform:scaleY(0);transform-origin:top;
  transition:transform var(--t);
}
.faq-item.is-open{border-color:rgba(214,64,42,.35);box-shadow:var(--sh-1)}
.faq-item.is-open::before{transform:scaleY(1)}
.faq-q{
  width:100%;background:none;border:0;text-align:left;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 22px;font-size:17px;font-weight:600;color:var(--ink);
  transition:color var(--t);
}
.faq-q:hover{color:var(--accent)}
.faq-icon{
  flex:0 0 auto;width:22px;height:22px;color:var(--text-3);
  transition:transform var(--t),color var(--t);
}
.faq-item.is-open .faq-icon{transform:rotate(180deg);color:var(--accent)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 280ms cubic-bezier(.22,.61,.36,1)}
.faq-a p{padding:0 22px 22px;font-size:15px;color:var(--text-2);line-height:1.8}

/* ============ CTA ============ */
.cta-band{
  background:var(--ink);border-radius:var(--r-lg);
  padding:56px 48px;color:rgba(255,255,255,.8);
  display:flex;flex-wrap:wrap;gap:28px;align-items:center;justify-content:space-between;
}
.cta-band h2{font-family:var(--font-display);font-size:clamp(24px,2.6vw,34px);color:#fff}
.cta-band p{margin-top:12px;font-size:15px;max-width:560px;color:rgba(255,255,255,.66)}
.cta-band .btn-ghost{color:#F6F4EF;border-color:rgba(255,255,255,.28)}
.cta-band .btn-ghost:hover{background:#F6F4EF;color:var(--ink);border-color:#F6F4EF}
.cta-acts{display:flex;flex-wrap:wrap;gap:14px}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-2);color:rgba(255,255,255,.72);padding:72px 0 28px;margin-top:96px}
.site-footer h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:18px;letter-spacing:.02em}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:17px;margin-bottom:16px}
.site-footer p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.58)}
.footer-links{display:grid;gap:12px}
.footer-links a{
  font-size:14px;color:rgba(255,255,255,.72);transition:color var(--t);
  border-bottom:1px solid transparent;padding-bottom:1px;
}
.footer-links a:hover{color:#fff;border-bottom-color:rgba(255,255,255,.6)}
.footer-bottom{
  margin-top:52px;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,.45);
}
.tiny{font-size:13px}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 420ms ease,transform 420ms cubic-bezier(.22,.61,.36,1)}
.reveal.is-in{opacity:1;transform:none}

/* ============ 响应式 ============ */
@media screen and (max-width:1023px){
  .sec{padding:72px 0}
  .sec-tight{padding:56px 0}
  .hero{padding:72px 0 64px}
  .nav-links{gap:20px}
}
@media screen and (max-width:1023px){
  .nav-links{display:none}
  .menu-btn{display:inline-flex}
  .nav-actions .btn-sm{display:none}
}
@media screen and (max-width:639px){
  .sec{padding:48px 0}
  .sec-tight{padding:44px 0}
  .hero{padding:48px 0 44px}
  .hero-sub{font-size:16px}
  .hero-cta{gap:12px}
  .hero-cta .btn{width:100%}
  .float-card{left:12px;right:12px;bottom:12px;padding:12px 14px;gap:18px}
  .float-item strong{font-size:22px}
  .cta-band{padding:34px 22px;border-radius:var(--r)}
  .cta-acts{width:100%}
  .cta-acts .btn{width:100%}
  .site-footer{padding:52px 0 24px;margin-top:56px}
  .hero-visual{margin-top:32px}
  .float-card{position:static;margin-top:-28px;margin-left:16px;margin-right:16px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category3 */
:root{
  --ink:#16181D;
  --ink-2:#0E1013;
  --accent:#D6402A;
  --accent-hover:#B8341F;
  --accent-2:#1E6B5C;
  --bg:#F6F4EF;
  --bg-2:#EFEBE3;
  --card:#FFFFFF;
  --line:#E4DFD5;
  --text:#3A3A3F;
  --text-2:#6E6E76;
  --text-3:#98938A;
  --r-sm:8px;
  --r:12px;
  --r-lg:18px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(22,24,29,.05), 0 8px 24px rgba(22,24,29,.06);
  --sh-2:0 16px 40px rgba(22,24,29,.12);
  --t:220ms cubic-bezier(.22,.61,.36,1);
  --font-display:"Songti SC","Noto Serif SC","Source Han Serif SC","STSong",serif;
  --font-sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
}
*,*::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:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;border-radius:var(--r)}
a{color:var(--ink);text-decoration:none;transition:color var(--t),border-color var(--t),background-color var(--t)}
a:hover{color:var(--accent)}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:-.01em}
h1,h2{font-family:var(--font-display);font-weight:800}
h1{font-size:clamp(34px,4.4vw,58px);line-height:1.14;letter-spacing:-.02em}
h2{font-size:clamp(26px,3vw,38px);line-height:1.2}
h3{font-size:21px;line-height:1.4;font-weight:600}
button,input,select,textarea{font-family:inherit;font-size:inherit}
button{cursor:pointer;border:0;background:none;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

/* ---------- 容器与栅格覆盖 ---------- */
.grid-container{max-width:1240px;padding-left:24px;padding-right:24px;margin:0 auto}
.grid-x{margin-left:-12px;margin-right:-12px}
.grid-x>.cell{padding-left:12px;padding-right:12px}
.row-tight{margin-bottom:0}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(246,244,239,.86);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--t);
}
.site-header.is-scrolled{box-shadow:var(--sh-1)}
.nav-inner{display:flex;align-items:center;height:68px;gap:12px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--ink)}
.brand:hover{color:var(--ink)}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px}
.brand-text{font-size:18px;font-weight:700;letter-spacing:-.01em;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:28px}
.nav-links a{
  position:relative;font-size:15px;color:var(--text);padding:6px 0;white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;left:50%;bottom:0;height:2px;width:0;
  background:var(--accent);transform:translateX(-50%);
  transition:width var(--t);
}
.nav-links a:hover{color:var(--ink)}
.nav-links a:hover::after{width:100%}
.nav-links a.is-active{color:var(--ink);font-weight:600}
.nav-links a.is-active::after{width:100%}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
.icon-btn{
  width:40px;height:40px;border-radius:var(--r-pill);
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--ink);border:1px solid transparent;transition:background-color var(--t),border-color var(--t),color var(--t);
}
.icon-btn svg{width:20px;height:20px}
.icon-btn:hover{background:var(--bg-2);border-color:var(--line);color:var(--ink)}
.menu-btn{display:none}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:10px;padding:14px 26px;font-size:15px;font-weight:600;
  line-height:1.2;transition:transform var(--t),background-color var(--t),color var(--t),border-color var(--t),box-shadow var(--t);
  border:1px solid transparent;
}
.btn-primary{background:var(--accent);color:#FDFBF7}
.btn-primary:hover{background:var(--accent-hover);color:#FDFBF7;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:var(--bg);border-color:var(--ink)}
.btn-sm{padding:10px 18px;font-size:14px;border-radius:9px}
.btn-block{width:100%}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0}
.section-alt{background:var(--bg-2)}
.section-head{max-width:640px;margin-bottom:44px}
.section-head .eyebrow{
  display:inline-block;font-size:13px;letter-spacing:.14em;color:var(--accent-2);
  text-transform:uppercase;margin-bottom:14px;font-weight:600;
}
.section-head p{margin-top:16px;color:var(--text-2);font-size:16px}
.rule{width:44px;height:4px;background:var(--accent);border-radius:2px;margin:18px 0 0}

/* ---------- Hero ---------- */
.hero{padding:88px 0 80px;position:relative;overflow:hidden}
.hero .grid-x{align-items:center}
.hero h1{max-width:12em}
.hero-lead{
  margin-top:20px;font-size:18px;line-height:1.7;color:var(--text-2);max-width:34ch;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-note{margin-top:22px;font-size:13px;color:var(--text-3)}
.hero-media{position:relative}
.hero-media img{
  width:100%;height:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
}
.hero-card{
  position:absolute;left:-18px;bottom:26px;background:rgba(255,255,255,.9);
  border:1px solid var(--line);border-radius:var(--r);padding:14px 18px;box-shadow:var(--sh-1);
  backdrop-filter:blur(6px);
}
.hero-card dl{margin:0;display:flex;gap:22px}
.hero-card dt{font-size:12px;color:var(--text-3);margin-bottom:2px}
.hero-card dd{margin:0;font-size:15px;font-weight:700;color:var(--ink)}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:34px}
.badge{
  font-size:13px;color:var(--text-2);border:1px solid var(--line);border-radius:var(--r-pill);
  padding:6px 14px;background:var(--card);
}

/* ---------- 图文交替 ---------- */
.split-row{margin-bottom:72px}
.split-row:last-child{margin-bottom:0}
.split-row h3{margin-bottom:14px}
.split-row p{color:var(--text-2)}
.split-media img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r);box-shadow:var(--sh-1)}
.split-index{
  font-family:var(--font-display);font-size:14px;font-weight:800;color:var(--accent);
  letter-spacing:.12em;margin-bottom:10px;display:block;
}
.mini-list{margin-top:18px;border-top:1px solid var(--line)}
.mini-list li{
  padding:12px 0 12px 20px;border-bottom:1px solid var(--line);font-size:15px;color:var(--text-2);position:relative;
}
.mini-list li::before{
  content:"";position:absolute;left:0;top:20px;width:8px;height:8px;border-radius:50%;
  background:var(--accent-2);opacity:.5;
}

/* ---------- 深墨数据条 ---------- */
.stat-band{background:var(--ink);color:#F6F4EF;padding:64px 0;margin:0}
.stat-band h2{color:#fff;font-size:clamp(22px,2.2vw,28px);margin-bottom:8px}
.stat-band .band-note{color:rgba(246,244,239,.6);font-size:14px;margin:8px 0 0}
.stat{display:flex;flex-direction:column;gap:6px;padding:22px 0}
.stat-num{
  font-family:var(--font-display);font-size:clamp(44px,5vw,72px);font-weight:800;line-height:1;
  color:#fff;font-variant-numeric:tabular-nums;letter-spacing:-.03em;
}
.stat-num span{font-size:.42em;color:var(--accent);margin-left:6px;letter-spacing:0}
.stat-label{font-size:14px;color:rgba(246,244,239,.7)}
.stat-divider{border-left:1px solid rgba(255,255,255,.14)}

/* ---------- 适用场景 ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.scene-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r);
  padding:26px 22px;box-shadow:var(--sh-1);transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.scene-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(214,64,42,.35)}
.scene-card .tag{
  display:inline-block;font-size:12px;color:var(--accent-2);background:rgba(30,107,92,.08);
  border-radius:var(--r-pill);padding:4px 12px;margin-bottom:14px;
}
.scene-card h3{font-size:18px;margin-bottom:10px}
.scene-card p{font-size:15px;color:var(--text-2);margin:0}

/* ---------- 流程步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;counter-reset:step}
.step{position:relative;padding-top:26px;border-top:2px solid var(--line)}
.step::before{
  counter-increment:step;content:counter(step,decimal-leading-zero);
  font-family:var(--font-display);font-size:14px;font-weight:800;color:var(--accent);
  position:absolute;top:-26px;left:0;background:var(--bg);padding:6px 10px 6px 0;letter-spacing:.08em;
}
.step h3{font-size:18px;margin-bottom:8px}
.step p{font-size:15px;color:var(--text-2);margin:0}

/* ---------- FAQ ---------- */
.faq-list{max-width:860px;margin:0 auto}
.faq-item{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r);
  margin-bottom:12px;overflow:hidden;transition:border-color var(--t),box-shadow var(--t);
}
.faq-item:hover{border-color:rgba(214,64,42,.3)}
.faq-item[open]{box-shadow:var(--sh-1)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;font-size:17px;font-weight:600;color:var(--ink);
  border-left:3px solid transparent;transition:border-color var(--t);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item[open] summary{border-left-color:var(--accent)}
.faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;transition:transform var(--t),background-color var(--t);
}
.faq-icon svg{width:14px;height:14px;color:var(--ink)}
.faq-item[open] .faq-icon{transform:rotate(45deg);background:var(--bg-2)}
.faq-body{padding:0 22px 22px 25px;font-size:15px;color:var(--text-2)}
.faq-body p{margin:0}

/* ---------- CTA 条 ---------- */
.cta-band{
  background:var(--ink-2);color:#F6F4EF;border-radius:var(--r-lg);
  padding:56px 48px;display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap;
}
.cta-band h2{color:#fff;font-size:clamp(24px,2.6vw,32px)}
.cta-band p{color:rgba(246,244,239,.7);margin-top:12px;max-width:56ch;font-size:15px}
.cta-band .btn-primary{background:var(--accent)}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-2);color:#F6F4EF;padding:72px 0 0;margin-top:96px}
.site-footer h4{color:#fff;font-size:15px;letter-spacing:.04em;margin-bottom:18px}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:#fff;margin-bottom:16px}
.site-footer p{color:rgba(255,255,255,.62);font-size:14px;line-height:1.8}
.footer-links li{margin-bottom:10px}
.footer-links a{color:rgba(255,255,255,.72);font-size:14px}
.footer-links a:hover{color:#fff;text-decoration:underline}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(255,255,255,.12);padding:22px 0 28px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);
}
.tiny{font-size:12px}

/* ---------- 滚动入场 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 420ms ease,transform 420ms ease}
.reveal.is-in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1023px){
  .grid-container{padding-left:20px;padding-right:20px}
  .section{padding:72px 0}
  .hero{padding:64px 0 56px}
  .nav-links{
    position:fixed;left:0;right:0;top:56px;bottom:0;
    background:rgba(246,244,239,.98);flex-direction:column;align-items:flex-start;
    gap:4px;padding:24px 20px;margin-left:0;display:none;z-index:70;overflow-y:auto;
  }
  .nav-links a{font-size:17px;width:100%;padding:14px 0;border-bottom:1px solid var(--line)}
  .nav-links a::after{display:none}
  .nav-links a.is-active{color:var(--accent)}
  body.menu-open .nav-links{display:flex}
  body.menu-open{overflow:hidden}
  .nav-inner{height:56px}
  .menu-btn{display:inline-flex}
  .nav-actions .btn-sm{display:none}
  .brand-text{font-size:16px}
  .split-row{margin-bottom:52px}
  .scene-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr);row-gap:44px}
  .stat-divider{border-left:0;border-top:1px solid rgba(255,255,255,.14)}
  .cta-band{padding:40px 28px}
  .site-footer{padding-top:56px}
}
@media screen and (max-width:639px){
  body{font-size:15px}
  .section{padding:48px 0}
  .hero{padding:48px 0 40px}
  .hero-note{font-size:12px}
  .hero-media{margin-top:32px}
  .hero-media img{aspect-ratio:4/3}
  .hero-card{left:12px;right:12px;bottom:-18px;padding:12px 14px}
  .hero-card dl{gap:16px;justify-content:space-between}
  .hero-badges{margin-top:42px}
  .scene-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr;row-gap:40px}
  .step{padding-top:20px}
  .step::before{top:-22px}
  .cta-band{padding:32px 22px;border-radius:var(--r)}
  .cta-band .btn{width:100%}
  .footer-bottom{flex-direction:column;gap:8px}
  .faq-item summary{padding:16px 16px;font-size:16px}
  .faq-body{padding:0 16px 18px 19px}
  .split-row{margin-bottom:44px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: category2 */
/* ========== 设计变量 ========== */
:root{
  --ink:#16181D; --ink-2:#0E1013; --accent:#D6402A; --accent-h:#B8341F; --accent-2:#1E6B5C;
  --bg:#F6F4EF; --bg-2:#EFEBE3; --card:#FFFFFF; --line:#E4DFD5;
  --text:#3A3A3F; --text-2:#6E6E76; --text-3:#98938A;
  --r-sm:8px; --r:12px; --r-lg:18px; --r-pill:999px;
  --sh-1:0 1px 2px rgba(22,24,29,.05), 0 8px 24px rgba(22,24,29,.06);
  --sh-2:0 16px 40px rgba(22,24,29,.12);
  --t:220ms cubic-bezier(.22,.61,.36,1);
  --font-display:"Songti SC","Noto Serif SC","Source Han Serif SC","STSong",serif;
  --font-sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
}

/* ========== 基础重置 ========== */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font-sans);font-size:16px;line-height:1.85;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased}
h1,h2,h3,h4,p,ul,ol,li,figure,blockquote{margin:0;padding:0}
ul,ol{list-style:none}
img{display:block;max-width:100%;height:auto}
button{font-family:inherit;font-size:inherit;color:inherit;background:none;border:0;cursor:pointer;line-height:1.6}
input,select,textarea{font-family:inherit;font-size:inherit}
a{color:var(--ink);text-decoration:none;transition:color var(--t),background-color var(--t),border-color var(--t)}
a:hover{color:var(--accent)}
a:active{color:var(--accent-h)}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
.grid-container{max-width:1240px;padding-left:24px;padding-right:24px}
.grid-margin-x{margin-left:-15px;margin-right:-15px}
.grid-margin-x>.cell{margin-left:15px;margin-right:15px}

/* ========== 通用版式 ========== */
.section{padding:96px 0}
.section-alt{background:var(--bg-2)}
.sec-head{max-width:720px;margin-bottom:48px}
.sec-head h2{font-family:var(--font-display);font-size:clamp(26px,3vw,38px);line-height:1.2;font-weight:700;letter-spacing:-.01em;color:var(--ink)}
.sec-lead{margin-top:14px;font-size:16px;color:var(--text-2);max-width:640px}
.eyebrow{display:inline-block;font-size:13px;letter-spacing:.14em;color:#F0C9BE;background:rgba(214,64,42,.22);border:1px solid rgba(214,64,42,.55);border-radius:var(--r-pill);padding:6px 14px;margin-bottom:22px}
.tag{display:inline-block;font-size:12px;color:var(--accent-2);background:rgba(30,107,92,.08);border-radius:var(--r-pill);padding:3px 10px}

/* ========== 按钮 ========== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:15px;font-weight:600;line-height:1.2;padding:14px 26px;border-radius:10px;border:1px solid transparent;transition:background-color var(--t),color var(--t),border-color var(--t),transform var(--t),box-shadow var(--t);cursor:pointer}
.btn-primary{background:var(--accent);color:#F6F4EF;border-color:var(--accent)}
.btn-primary:hover{background:var(--accent-h);border-color:var(--accent-h);color:#fff;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0);background:#9E2C1A}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{background:var(--ink);color:#F6F4EF;border-color:var(--ink)}
.btn-ghost:active{background:var(--ink-2)}
.btn-sm{padding:10px 18px;font-size:14px}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none}

/* ========== 导航 ========== */
.site-header{position:sticky;top:0;z-index:50;background:rgba(246,244,239,.86);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--line);transition:box-shadow var(--t)}
.site-header.is-scrolled{box-shadow:var(--sh-1)}
.nav-inner{display:flex;align-items:center;height:68px;gap:26px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{display:inline-flex;align-items:center}
.brand-text{font-size:18px;font-weight:700;color:var(--ink);letter-spacing:-.01em;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:6px}
.nav-links a{position:relative;font-size:15px;color:var(--text);padding:6px 0}
.nav-links a::after{content:"";position:absolute;left:50%;right:50%;bottom:0;height:2px;background:var(--accent);transition:left var(--t),right var(--t)}
.nav-links a:hover{color:var(--ink)}
.nav-links a:hover::after{left:0;right:0}
.nav-links a[aria-current="page"]{color:var(--ink);font-weight:600}
.nav-links a[aria-current="page"]::after{left:0;right:0}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.icon-btn{width:40px;height:40px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;color:var(--ink);transition:background-color var(--t),color var(--t)}
.icon-btn:hover{background:rgba(22,24,29,.07);color:var(--ink)}
.icon-btn svg{width:20px;height:20px}
.menu-btn{display:none}

/* 移动抽屉 */
.mobile-drawer{position:fixed;inset:0;z-index:70;background:var(--bg);display:none;flex-direction:column;padding:22px 20px 32px;overflow-y:auto}
.mobile-drawer.is-open{display:flex}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:28px}
.drawer-nav{display:flex;flex-direction:column;gap:4px}
.drawer-nav a{font-size:17px;padding:14px 4px;border-bottom:1px solid var(--line);color:var(--ink)}
.drawer-nav a[aria-current="page"]{color:var(--accent);font-weight:600}
.drawer-cta{margin-top:28px}
body.no-scroll{overflow:hidden}

/* ========== 分类页 Hero ========== */
.cat-hero{position:relative;overflow:hidden;background:var(--ink-2);color:#F6F4EF}
.cat-hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.5}
.cat-hero-mask{position:absolute;inset:0;background:linear-gradient(100deg,rgba(14,16,19,.94) 0%,rgba(14,16,19,.72) 52%,rgba(14,16,19,.42) 100%)}
.cat-hero-inner{position:relative;z-index:2;padding:112px 0 88px;max-width:760px}
.cat-hero h1{font-family:var(--font-display);font-size:clamp(34px,4.4vw,58px);line-height:1.12;font-weight:800;letter-spacing:-.02em;color:#FFFFFF}
.cat-hero-sub{margin-top:20px;font-size:17px;line-height:1.8;color:rgba(246,244,239,.78);max-width:600px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.cat-hero .btn-ghost{color:#F6F4EF;border-color:rgba(246,244,239,.42)}
.cat-hero .btn-ghost:hover{background:#F6F4EF;color:var(--ink);border-color:#F6F4EF}
.trust-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:36px}
.trust-tags li{font-size:13px;color:rgba(246,244,239,.8);border:1px solid rgba(246,244,239,.24);border-radius:var(--r-pill);padding:6px 14px;white-space:nowrap}

/* ========== 分栏主体 ========== */
.toc{position:sticky;top:96px}
.toc-title{font-size:13px;letter-spacing:.12em;color:var(--text-3);margin-bottom:14px}
.toc-list{display:flex;flex-direction:column;gap:2px;border-left:1px solid var(--line)}
.toc-link{display:flex;align-items:baseline;gap:10px;font-size:14px;color:var(--text-2);padding:10px 12px;border-left:2px solid transparent;margin-left:-1px;transition:color var(--t),border-color var(--t),background-color var(--t)}
.toc-link:hover{color:var(--ink);background:rgba(22,24,29,.03)}
.toc-link.is-active{color:var(--ink);font-weight:600;border-left-color:var(--accent);background:rgba(214,64,42,.05)}
.toc-num{font-size:12px;color:var(--accent);font-variant-numeric:tabular-nums;letter-spacing:.04em}

.entry{padding:0 0 36px;border-bottom:1px solid var(--line)}
.entry+.entry{padding-top:36px}
.entry:last-child{border-bottom:0;padding-bottom:0}
.entry-num{display:inline-block;font-size:12px;font-weight:700;letter-spacing:.12em;color:var(--accent);font-variant-numeric:tabular-nums;margin-bottom:10px}
.entry h3{font-family:var(--font-display);font-size:22px;line-height:1.4;font-weight:600;color:var(--ink);margin-bottom:14px}
.entry p{font-size:16px;line-height:1.9;color:var(--text);margin-bottom:14px;max-width:780px}
.entry p:last-of-type{margin-bottom:0}
.tip{margin-top:18px;background:var(--card);border:1px solid var(--line);border-left:3px solid var(--accent-2);border-radius:var(--r);padding:14px 18px;font-size:14px;line-height:1.8;color:var(--text-2)}
.tip strong{color:var(--ink);font-weight:600}

/* ========== 场景卡片 ========== */
.scene-card{height:100%;background:var(--card);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--sh-1);padding:26px;transition:transform var(--t),box-shadow var(--t),border-color var(--t)}
.scene-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(214,64,42,.32)}
.scene-card h3{font-family:var(--font-display);font-size:20px;line-height:1.4;font-weight:600;color:var(--ink);margin-bottom:12px}
.scene-card p{font-size:15px;color:var(--text-2);line-height:1.8}
.scene-card--feature{padding:0;overflow:hidden;display:flex;flex-direction:column}
.scene-media{position:relative;overflow:hidden;aspect-ratio:16/9;background:var(--bg-2)}
.scene-media img{width:100%;height:100%;object-fit:cover;transition:transform 420ms cubic-bezier(.22,.61,.36,1)}
.scene-card--feature:hover .scene-media img{transform:scale(1.04)}
.scene-body{padding:24px 26px 28px}
.scene-link{display:inline-flex;align-items:center;gap:6px;margin-top:16px;font-size:14px;font-weight:600;color:var(--accent)}
.scene-link span{display:inline-block;transition:transform var(--t)}
.scene-link:hover{color:var(--accent-h)}
.scene-link:hover span{transform:translateX(3px)}

/* ========== FAQ ========== */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px}
.faq-item{background:var(--card);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;transition:border-color var(--t),box-shadow var(--t)}
.faq-item.is-open{border-color:rgba(214,64,42,.35);box-shadow:var(--sh-1)}
.faq-q{display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%;text-align:left;font-size:17px;font-weight:600;color:var(--ink);padding:20px 22px;position:relative}
.faq-q::before{content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;background:var(--accent);transform:scaleY(0);transform-origin:top;transition:transform var(--t)}
.faq-item.is-open .faq-q::before{transform:scaleY(1)}
.faq-icon{flex:0 0 auto;width:18px;height:18px;color:var(--accent);transition:transform var(--t)}
.faq-item.is-open .faq-icon{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 320ms cubic-bezier(.22,.61,.36,1)}
.faq-a-inner{padding:0 22px 22px;font-size:15px;line-height:1.85;color:var(--text-2)}

/* ========== CTA 条 ========== */
.cta-bar{background:var(--ink);color:#F6F4EF;padding:72px 0}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-bar h2{font-family:var(--font-display);font-size:clamp(24px,2.6vw,32px);line-height:1.3;font-weight:700;color:#fff;max-width:620px}
.cta-bar p{margin-top:12px;font-size:15px;color:rgba(246,244,239,.72);max-width:560px}

/* ========== 页脚 ========== */
.site-footer{background:var(--ink-2);color:#F6F4EF;padding:72px 0 0}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:#fff;margin-bottom:16px}
.site-footer p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.66);max-width:320px}
.site-footer h4{font-size:14px;font-weight:600;color:#fff;letter-spacing:.04em;margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:rgba(255,255,255,.72)}
.footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}
.footer-bottom{margin-top:56px;padding:20px 0;border-top:1px solid rgba(255,255,255,.12);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.5)}
.tiny{font-size:13px}

/* ========== 滚动进场 ========== */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 420ms cubic-bezier(.22,.61,.36,1),transform 420ms cubic-bezier(.22,.61,.36,1)}
.reveal.is-visible{opacity:1;transform:none}

/* ========== 响应式 ========== */
@media screen and (max-width:1023px){
  .section{padding:72px 0}
  .nav-links{display:none}
  .menu-btn{display:inline-flex}
  .toc{position:static;margin-bottom:36px}
  .toc-list{flex-direction:row;border-left:0;overflow-x:auto;padding-bottom:8px;gap:8px;-webkit-overflow-scrolling:touch}
  .toc-link{flex:0 0 auto;border:1px solid var(--line);border-radius:var(--r-pill);background:var(--card);padding:8px 16px;margin-left:0}
  .toc-link.is-active{border-color:rgba(214,64,42,.5);background:rgba(214,64,42,.07)}
  .cat-hero-inner{padding:88px 0 72px}
  .site-footer{padding:56px 0 0}
}
@media screen and (max-width:639px){
  .grid-container{padding-left:20px;padding-right:20px}
  .section{padding:48px 0}
  .sec-head{margin-bottom:32px}
  .nav-inner{height:56px}
  .brand-text{font-size:16px}
  .nav-actions .btn{display:none}
  .cat-hero-inner{padding:64px 0 56px}
  .cat-hero-sub{font-size:15.5px;margin-top:16px}
  .hero-actions .btn{width:100%}
  .trust-tags{margin-top:26px;flex-wrap:nowrap;overflow-x:auto;padding-bottom:6px}
  .entry h3{font-size:19px}
  .entry p{font-size:15.5px}
  .cta-bar{padding:48px 0}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .cta-inner .btn{width:100%}
  .footer-bottom{flex-direction:column;gap:8px}
  .site-footer p{max-width:none}
}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  .scene-card:hover,.btn:hover{transform:none}
  .scene-card--feature:hover .scene-media img{transform:none}
}

/* roulang page: category4 */
:root{
  --ink:#16181D;
  --ink-2:#0E1013;
  --accent:#D6402A;
  --accent-h:#B8341F;
  --accent-2:#1E6B5C;
  --bg:#F6F4EF;
  --bg-2:#EFEBE3;
  --card:#FFFFFF;
  --line:#E4DFD5;
  --text:#3A3A3F;
  --text-2:#6E6E76;
  --text-3:#98938A;
  --r-sm:8px;
  --r:12px;
  --r-lg:18px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(22,24,29,.05),0 8px 24px rgba(22,24,29,.06);
  --sh-2:0 16px 40px rgba(22,24,29,.12);
  --t:220ms cubic-bezier(.22,.61,.36,1);
  --font-display:"Songti SC","Noto Serif SC","Source Han Serif SC","STSong",serif;
  --font-sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.no-scroll{overflow:hidden}
img{max-width:100%;display:block;border:0}
a{color:var(--accent);text-decoration:none;transition:color var(--t)}
a:hover{color:var(--accent-h)}
button{font-family:inherit;font-size:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,select,textarea{font-family:inherit;font-size:15px;color:var(--text)}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.25}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
.grid-container{max-width:1240px;padding-left:24px;padding-right:24px}
@media screen and (max-width:639px){.grid-container{padding-left:20px;padding-right:20px}}
.section{padding:96px 0}
.section.tight{padding:72px 0}
@media screen and (max-width:1023px){.section{padding:72px 0}.section.tight{padding:56px 0}}
@media screen and (max-width:639px){.section{padding:48px 0}.section.tight{padding:40px 0}}
h1{font-family:var(--font-display);font-size:clamp(34px,4.4vw,58px);line-height:1.12;letter-spacing:-.02em;font-weight:800}
h2{font-family:var(--font-display);font-size:clamp(26px,3vw,38px);line-height:1.2;font-weight:700}
h3{font-size:21px;line-height:1.4;font-weight:600}
.lead{font-size:17px;color:var(--text-2);max-width:640px}
.muted{color:var(--text-2)}
.eyebrow{
  display:inline-block;font-size:13px;letter-spacing:.14em;font-weight:600;
  color:var(--accent);text-transform:uppercase;margin-bottom:14px;
}
.sec-head{max-width:720px;margin-bottom:44px}
.sec-head h2{margin-bottom:14px}
.sec-head p{color:var(--text-2);font-size:16px;max-width:640px}
.rule{height:1px;background:var(--line);border:0;margin:0}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 26px;border-radius:10px;font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;text-align:center;
  transition:background var(--t),color var(--t),border-color var(--t),transform var(--t),box-shadow var(--t);
}
.btn-primary{background:var(--accent);color:#FBF7F0}
.btn-primary:hover{background:var(--accent-h);color:#FBF7F0;transform:translateY(-1px);box-shadow:var(--sh-1)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;color:var(--ink);border-color:rgba(22,24,29,.35)}
.btn-ghost:hover{background:var(--ink);color:#FBF7F0;border-color:var(--ink);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{padding:10px 18px;font-size:14px;border-radius:9px}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none}

/* 导航 */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(246,244,239,.86);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--t),background var(--t);
}
.site-header.is-scrolled{box-shadow:var(--sh-1);background:rgba(246,244,239,.95)}
.nav-inner{display:flex;align-items:center;gap:26px;height:68px}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:700;font-size:18px;flex:none}
.brand:hover{color:var(--ink)}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px}
.brand-text{white-space:nowrap;letter-spacing:-.01em}
.nav-links{display:flex;align-items:center;gap:22px}
.nav-links a{
  position:relative;font-size:15px;color:var(--text);padding:8px 2px;display:inline-block;
}
.nav-links a::after{
  content:"";position:absolute;left:50%;right:50%;bottom:2px;height:2px;
  background:var(--accent);transition:left var(--t),right var(--t);
}
.nav-links a:hover{color:var(--ink)}
.nav-links a:hover::after{left:0;right:0}
.nav-links a[aria-current="page"]{color:var(--ink);font-weight:600}
.nav-links a[aria-current="page"]::after{left:0;right:0}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.icon-btn{
  width:42px;height:42px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;
  color:var(--ink);border:1px solid transparent;transition:background var(--t),border-color var(--t),transform var(--t);
}
.icon-btn svg{width:20px;height:20px}
.icon-btn:hover{background:var(--bg-2);border-color:var(--line)}
.icon-btn:active{transform:scale(.96)}
.menu-btn{display:none}
@media screen and (max-width:1023px){
  .nav-inner{height:56px;gap:14px}
  .brand-text{font-size:16px}
  .nav-links{
    position:fixed;left:0;right:0;top:56px;bottom:0;
    background:var(--bg);flex-direction:column;align-items:stretch;gap:0;
    padding:24px 20px 40px;display:none;overflow-y:auto;z-index:70;
    border-top:1px solid var(--line);
  }
  .nav-links.is-open{display:flex}
  .nav-links a{font-size:18px;padding:16px 4px;border-bottom:1px solid var(--line)}
  .nav-links a::after{display:none}
  .nav-links a[aria-current="page"]{color:var(--accent)}
  .nav-actions .btn-primary{display:none}
  .menu-btn{display:inline-flex}
}

/* Hero */
.page-hero{position:relative;overflow:hidden;background:var(--ink);color:#F3EFE7}
.page-hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.5}
.page-hero-mask{
  position:absolute;inset:0;
  background:linear-gradient(115deg,rgba(14,16,19,.94) 0%,rgba(14,16,19,.78) 46%,rgba(14,16,19,.42) 100%);
}
.page-hero .grid-container{position:relative;z-index:2;padding-top:104px;padding-bottom:88px}
.page-hero h1{color:#FBF7F0;margin-bottom:18px;max-width:16em}
.hero-sub{font-size:17px;color:rgba(243,239,231,.82);max-width:620px;margin-bottom:28px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px}
.hero-cta .btn-ghost{color:#F3EFE7;border-color:rgba(243,239,231,.45)}
.hero-cta .btn-ghost:hover{background:#F3EFE7;color:var(--ink);border-color:#F3EFE7}
.crumbs{font-size:13px;color:rgba(243,239,231,.62);margin-bottom:22px}
.crumbs a{color:rgba(243,239,231,.62)}
.crumbs a:hover{color:#FBF7F0;text-decoration:underline}
.crumbs span{margin:0 8px;opacity:.5}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px}
.hero-tags li{
  font-size:13px;color:rgba(243,239,231,.86);border:1px solid rgba(243,239,231,.28);
  border-radius:var(--r-pill);padding:6px 14px;
}
@media screen and (max-width:1023px){
  .page-hero .grid-container{padding-top:72px;padding-bottom:64px}
}
@media screen and (max-width:639px){
  .page-hero .grid-container{padding-top:48px;padding-bottom:48px}
  .hero-sub{font-size:16px}
  .hero-cta .btn{width:100%}
}

/* 快速核对三栏 */
.check-strip{background:var(--bg-2);border-bottom:1px solid var(--line)}
.check-item{padding:26px 24px 26px 0;border-top:2px solid var(--ink)}
.check-item .num{
  display:block;font-family:var(--font-display);font-size:15px;font-weight:800;
  color:var(--accent);letter-spacing:.08em;margin-bottom:10px;
}
.check-item h3{font-size:19px;margin-bottom:10px}
.check-item p{font-size:15px;color:var(--text-2);line-height:1.8}
@media screen and (max-width:1023px){.check-item{padding:22px 0 22px 0}}

/* 时间线 */
.tl-list{position:relative}
.tl-list::before{
  content:"";position:absolute;left:21px;top:14px;bottom:24px;width:2px;
  background:linear-gradient(180deg,var(--line) 0%,var(--line) 82%,rgba(228,223,213,0) 100%);
}
.tl-item{position:relative;padding-left:72px;padding-bottom:26px}
.tl-item:last-child{padding-bottom:0}
.tl-dot{
  position:absolute;left:0;top:4px;width:44px;height:44px;border-radius:50%;
  background:var(--card);border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-display);font-size:15px;font-weight:800;color:var(--accent);
  transition:background var(--t),color var(--t),border-color var(--t),transform var(--t);
  z-index:1;
}
.tl-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r);
  padding:24px 26px;box-shadow:var(--sh-1);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.tl-card h3{margin-bottom:10px}
.tl-card p{font-size:15.5px;color:var(--text-2);line-height:1.85;margin-bottom:14px;max-width:760px}
.tl-meta{display:flex;flex-wrap:wrap;gap:8px}
.tl-meta li{
  font-size:12.5px;color:var(--accent-2);background:rgba(30,107,92,.08);
  border-radius:var(--r-pill);padding:5px 12px;
}
.tl-item:hover .tl-card{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(214,64,42,.35)}
.tl-item:hover .tl-dot{background:var(--accent);border-color:var(--accent);color:#FBF7F0}
@media screen and (max-width:639px){
  .tl-list::before{left:17px}
  .tl-item{padding-left:56px}
  .tl-dot{width:36px;height:36px;font-size:13px}
  .tl-card{padding:20px 18px}
}

/* 数据条 */
.stat-band{background:var(--ink);color:#EFEBE3;padding:88px 0}
.stat-band h2{color:#FBF7F0;margin-bottom:14px}
.stat-band .band-desc{color:rgba(239,235,227,.68);font-size:15.5px;max-width:420px}
.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.stat{border-left:1px solid rgba(239,235,227,.18);padding-left:22px}
.stat-num{
  font-family:var(--font-display);font-weight:800;letter-spacing:-.02em;
  font-size:clamp(40px,5vw,64px);line-height:1;color:#FBF7F0;
  font-variant-numeric:tabular-nums;display:inline-block;
}
.stat-unit{font-size:16px;color:var(--accent);margin-left:6px;font-weight:700}
.stat-label{display:block;font-size:14px;color:rgba(239,235,227,.66);margin-top:12px}
@media screen and (max-width:1023px){
  .stat-band{padding:64px 0}
  .stat-grid{grid-template-columns:1fr;gap:20px;margin-top:28px}
}
@media screen and (max-width:639px){.stat-band{padding:48px 0}}

/* 参与须知 */
.notice-list{border-top:1px solid var(--line)}
.notice-list li{
  position:relative;border-bottom:1px solid var(--line);
  padding:22px 20px 22px 0;font-size:15.5px;color:var(--text-2);line-height:1.85;
  transition:padding var(--t),color var(--t);
}
.notice-list li strong{display:block;color:var(--ink);font-size:16.5px;font-weight:600;margin-bottom:6px;line-height:1.5}
.notice-list li::before{
  content:"";position:absolute;left:0;top:22px;bottom:22px;width:3px;background:var(--accent);
  transform:scaleY(0);transform-origin:top;transition:transform var(--t);
}
.notice-list li:hover{padding-left:16px;color:var(--text)}
.notice-list li:hover::before{transform:scaleY(1)}
@media screen and (max-width:639px){.notice-list li{padding:18px 0}.notice-list li:hover{padding-left:12px}}

/* FAQ */
.faq-wrap{max-width:900px}
.faq-item{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r);
  margin-bottom:12px;overflow:hidden;transition:border-color var(--t),box-shadow var(--t);
}
.faq-item.is-open{border-color:rgba(214,64,42,.35);box-shadow:var(--sh-1)}
.faq-q{margin:0}
.faq-q button{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:22px 24px;text-align:left;font-size:17px;font-weight:600;color:var(--ink);
  line-height:1.5;position:relative;min-height:44px;
}
.faq-q button::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;background:var(--accent);
  transform:scaleY(0);transition:transform var(--t);
}
.faq-item.is-open .faq-q button::before{transform:scaleY(1)}
.faq-q button:hover{color:var(--accent-h)}
.faq-ico{
  flex:none;width:22px;height:22px;position:relative;
  transition:transform var(--t);
}
.faq-ico::before,.faq-ico::after{
  content:"";position:absolute;background:var(--text-2);border-radius:2px;
}
.faq-ico::before{left:0;top:10px;width:22px;height:2px}
.faq-ico::after{left:10px;top:0;width:2px;height:22px;transition:opacity var(--t)}
.faq-item.is-open .faq-ico{transform:rotate(180deg)}
.faq-item.is-open .faq-ico::after{opacity:0}
.faq-a{display:none;padding:0 24px 24px;font-size:15px;line-height:1.85;color:var(--text-2);max-width:760px}
.faq-item.is-open .faq-a{display:block}
@media screen and (max-width:639px){
  .faq-q button{padding:18px 18px;font-size:16px}
  .faq-a{padding:0 18px 20px}
}

/* CTA 条 */
.cta-band{padding:0 0 96px}
.cta-inner{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:48px 44px;box-shadow:var(--sh-1);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:26px;
}
.cta-inner h2{margin-bottom:10px}
.cta-inner p{color:var(--text-2);font-size:15.5px;max-width:520px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}
@media screen and (max-width:1023px){.cta-band{padding-bottom:72px}.cta-inner{padding:36px 28px}}
@media screen and (max-width:639px){
  .cta-band{padding-bottom:48px}
  .cta-inner{padding:28px 20px}
  .cta-actions .btn{width:100%}
}

/* 页脚 */
.site-footer{background:var(--ink-2);color:rgba(255,255,255,.72);padding:72px 0 0;font-size:14.5px}
.site-footer h4{color:#FBF7F0;font-size:15px;font-weight:600;margin-bottom:18px;letter-spacing:.02em}
.site-footer p{color:rgba(255,255,255,.62);line-height:1.8;max-width:340px;margin-top:16px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#FBF7F0;font-weight:700;font-size:17px}
.footer-links li{margin-bottom:11px}
.footer-links a{color:rgba(255,255,255,.72);font-size:14.5px}
.footer-links a:hover{color:#FFFFFF;text-decoration:underline}
.tiny{font-size:12.5px}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0 26px;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.5);
}
@media screen and (max-width:639px){
  .site-footer{padding-top:48px}
  .footer-bottom{margin-top:36px;flex-direction:column}
}

/* 进入动效 */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 420ms ease,transform 420ms ease}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  *{animation:none !important;transition-duration:.01ms !important}
}