/* roulang page: index */
:root{
  --ink:#111413;
  --copper:#C56A2D;
  --paper:#F7F4EF;
  --surface:#FFFFFF;
  --surface-2:#F1ECE5;
  --text:#1D1B18;
  --muted:#6B645C;
  --line:#DDD6CC;
  --jade:#2F6F62;
  --radius-s:4px;
  --radius:8px;
  --radius-l:10px;
  --shadow:0 10px 30px rgba(0,0,0,.06);
  --ease:cubic-bezier(.2,.8,.2,1);
  --sp-sec:120px;
  --max:1260px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:1.0625rem;
  line-height:1.85;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease)}
a:hover{color:var(--copper)}
h1,h2,h3,h4{font-family:"Noto Serif SC","Songti SC",Georgia,serif;line-height:1.18;margin:0;font-weight:700;letter-spacing:.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button,input,textarea,select{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--copper);outline-offset:3px;border-radius:2px}
.grid-container{max-width:var(--max);padding-left:28px;padding-right:28px}
.section{padding:var(--sp-sec) 0}
.section-alt{background:var(--surface-2)}
.section-dark{background:var(--ink);color:#F4EFE8}
.sec-label{
  display:inline-flex;align-items:center;gap:10px;
  font-size:.8125rem;letter-spacing:.22em;text-transform:uppercase;
  color:var(--copper);font-weight:500;margin-bottom:18px;
}
.sec-label::before{content:"";width:26px;height:1px;background:var(--copper);display:block}
.sec-title{font-size:clamp(1.75rem,2.6vw,2.5rem);margin-bottom:18px}
.sec-desc{color:var(--muted);max-width:680px;font-size:1.0625rem}
.section-dark .sec-desc{color:rgba(244,239,232,.72)}
.hairline{height:1px;background:var(--line);border:0;margin:0}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,244,239,.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.topbar{
  min-height:80px;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.brand{display:flex;align-items:center;gap:12px;font-weight:700}
.brand-mark{
  width:38px;height:38px;border-radius:var(--radius-s);
  background:var(--ink);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-family:"Inter","Noto Sans SC",sans-serif;font-size:.95rem;letter-spacing:.06em;
}
.brand-name{font-family:"Noto Serif SC",serif;font-size:1.25rem;letter-spacing:.02em}
.brand-sub{display:block;font-size:.72rem;letter-spacing:.2em;color:var(--muted);font-weight:400}
.main-nav{display:flex;align-items:center;gap:34px}
.main-nav a{
  position:relative;font-size:.98rem;color:#2B2620;padding:6px 0;
}
.main-nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--copper);transform:scaleX(0);transform-origin:left;
  transition:transform .22s var(--ease);
}
.main-nav a:hover::after,.main-nav a.active::after{transform:scaleX(1)}
.main-nav a.active{color:var(--ink);font-weight:500}
.nav-side{display:flex;align-items:center;gap:16px}
.nav-toggle{
  display:none;background:none;border:1px solid var(--line);border-radius:var(--radius-s);
  padding:9px 14px;font-size:.9rem;cursor:pointer;transition:border-color .2s var(--ease);
}
.nav-toggle:hover{border-color:var(--ink)}
.mobile-drawer{
  display:none;border-top:1px solid var(--line);background:var(--surface);
}
.mobile-drawer.is-open{display:block}
.mobile-drawer a{
  display:block;padding:16px 28px;border-bottom:1px solid var(--line);font-size:1rem;
}
.mobile-drawer a.active{color:var(--copper);font-weight:500}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:14px 30px;border-radius:var(--radius-s);
  font-size:.96rem;font-weight:500;letter-spacing:.04em;
  border:1px solid transparent;cursor:pointer;
  transition:background-color .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease);
}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:var(--copper);color:#fff;transform:translateY(-2px)}
.btn-line{background:transparent;border-color:var(--line);color:var(--ink)}
.btn-line:hover{border-color:var(--ink);color:var(--ink)}
.btn-light{background:#fff;color:var(--ink)}
.btn-light:hover{background:var(--copper);color:#fff;transform:translateY(-2px)}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.4);color:#fff}
.btn-outline-light:hover{border-color:#fff;color:#fff;background:rgba(255,255,255,.08)}
.btn-block{width:100%}
.link-more{
  display:inline-flex;align-items:center;gap:8px;font-size:.9rem;color:var(--copper);
  border-bottom:1px solid transparent;padding-bottom:2px;
}
.link-more:hover{border-color:var(--copper)}
.link-more i{font-size:.75rem}

/* ---------- hero ---------- */
.hero{position:relative;background:var(--ink);color:#fff;overflow:hidden;isolation:isolate}
.hero-media{
  position:absolute;inset:0;z-index:-2;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
  opacity:.42;
}
.hero-veil{
  position:absolute;inset:0;z-index:-1;
  background:linear-gradient(102deg,rgba(17,20,19,.95) 0%,rgba(17,20,19,.82) 46%,rgba(17,20,19,.55) 100%);
}
.hero-inner{padding:112px 0 96px}
.hero-kicker{
  display:inline-flex;align-items:center;gap:12px;
  font-size:.8rem;letter-spacing:.24em;color:rgba(244,239,232,.66);
  border:1px solid rgba(244,239,232,.24);border-radius:999px;padding:7px 16px;margin-bottom:28px;
}
.hero-kicker i{color:var(--copper)}
.hero h1{
  font-size:clamp(2.2rem,4.6vw,3.9rem);
  color:#fff;margin-bottom:22px;letter-spacing:.005em;
}
.hero h1 em{font-style:normal;color:var(--copper)}
.hero-lead{
  font-size:1.125rem;color:rgba(244,239,232,.8);max-width:560px;margin-bottom:34px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:40px}
.hero-facts{display:flex;flex-wrap:wrap;gap:34px;border-top:1px solid rgba(244,239,232,.18);padding-top:26px}
.hero-facts div{min-width:120px}
.hero-facts strong{
  display:block;font-family:"Inter","Noto Sans SC",sans-serif;font-size:1.5rem;color:#fff;line-height:1.3;
}
.hero-facts span{font-size:.82rem;color:rgba(244,239,232,.6);letter-spacing:.06em}
.hero-panel{
  border:1px solid rgba(244,239,232,.22);
  background:rgba(17,20,19,.42);
  border-radius:var(--radius);
  padding:34px 30px;
}
.hero-panel h2{
  font-size:1.3rem;color:#fff;margin-bottom:6px;
}
.hero-panel .panel-note{font-size:.86rem;color:rgba(244,239,232,.6);margin-bottom:22px}
.panel-list li{
  display:flex;gap:16px;padding:16px 0;border-top:1px solid rgba(244,239,232,.16);
}
.panel-list li:first-child{border-top:0;padding-top:0}
.panel-list .idx{
  font-family:"Inter",sans-serif;font-size:.82rem;color:var(--copper);letter-spacing:.1em;padding-top:4px;min-width:26px;
}
.panel-list .pt{font-size:.98rem;color:#F4EFE8;line-height:1.7}
.panel-list .pd{font-size:.85rem;color:rgba(244,239,232,.58)}

/* ---------- trust bar ---------- */
.trustbar{background:var(--surface);border-bottom:1px solid var(--line)}
.trustbar-inner{
  display:grid;grid-template-columns:repeat(4,1fr);
}
.trust-cell{
  padding:30px 26px;border-left:1px solid var(--line);
}
.trust-cell:first-child{border-left:0;padding-left:0}
.trust-cell strong{
  display:block;font-family:"Noto Serif SC",serif;font-size:1.1rem;margin-bottom:4px;
}
.trust-cell span{font-size:.86rem;color:var(--muted)}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:0;margin-top:56px}
.step{
  position:relative;padding:38px 34px 34px 0;
  border-top:1px solid var(--line);
  transition:transform .24s var(--ease);
}
.step::before{
  content:"";position:absolute;top:-1px;left:0;width:0;height:1px;background:var(--copper);
  transition:width .4s var(--ease);
}
.step:hover::before{width:100%}
.step:hover{transform:translateY(-2px)}
.step .step-num{
  font-family:"Inter",sans-serif;font-size:.86rem;letter-spacing:.2em;color:var(--copper);
  display:block;margin-bottom:16px;
}
.step h3{font-size:1.32rem;margin-bottom:12px}
.step p{color:var(--muted);font-size:.98rem;margin-bottom:18px;max-width:320px}
.step-pad{padding-right:34px}
.step:last-child{padding-right:0}
.steps-note{
  margin-top:48px;padding-top:26px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:28px;align-items:center;color:var(--muted);font-size:.94rem;
}

/* ---------- cases ---------- */
.case-grid{margin-top:56px}
.case-visual{position:relative;overflow:hidden;border-radius:var(--radius);background:var(--ink)}
.case-visual img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.case-visual:hover img{transform:scale(1.03)}
.case-visual .case-badge{
  position:absolute;left:24px;bottom:24px;right:24px;
  background:rgba(17,20,19,.82);color:#F4EFE8;
  border-radius:var(--radius);padding:20px 22px;backdrop-filter:blur(6px);
}
.case-badge strong{display:block;font-family:"Noto Serif SC",serif;font-size:1.05rem;margin-bottom:6px}
.case-badge span{font-size:.85rem;color:rgba(244,239,232,.7)}
.case-list li{
  display:flex;gap:22px;padding:24px 0;border-top:1px solid var(--line);
}
.case-list li:first-child{border-top:0;padding-top:0}
.case-thumb{
  width:104px;flex:0 0 104px;border-radius:var(--radius-s);overflow:hidden;background:var(--surface-2);
}
.case-thumb img{width:100%;height:100%;object-fit:cover}
.case-body .tag{display:inline-block;margin-bottom:10px}
.case-body h3{font-size:1.12rem;margin-bottom:8px}
.case-body p{font-size:.94rem;color:var(--muted);margin-bottom:10px}
.case-quote{
  font-size:.88rem;color:var(--jade);border-left:2px solid var(--jade);padding-left:12px;margin-bottom:12px;
}
.tag{
  display:inline-block;font-size:.75rem;letter-spacing:.1em;
  padding:4px 11px;border:1px solid var(--line);border-radius:999px;color:var(--muted);
  background:var(--surface);
}
.tag-copper{border-color:rgba(197,106,45,.4);color:var(--copper);background:rgba(197,106,45,.07)}
.stat-row{
  display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;margin-top:48px;
}
.stat{background:var(--surface);padding:26px 24px}
.stat strong{display:block;font-family:"Inter","Noto Sans SC",sans-serif;font-size:1.9rem;color:var(--ink);line-height:1.2}
.stat span{font-size:.85rem;color:var(--muted)}

/* ---------- news ---------- */
.news-head{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:flex-end;gap:24px}
.news-grid{
  margin-top:52px;display:grid;grid-template-columns:repeat(2,1fr);gap:24px;
}
.news-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:28px 28px 24px;display:flex;flex-direction:column;
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.news-card:hover{transform:translateY(-2px);border-color:#C9BFAF;box-shadow:var(--shadow)}
.news-meta{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:16px}
.news-meta time{font-size:.82rem;color:var(--muted);font-family:"Inter","Noto Sans SC",sans-serif}
.news-card h3{font-size:1.14rem;margin-bottom:12px;line-height:1.45}
.news-card h3 a:hover{color:var(--copper)}
.news-card p{font-size:.94rem;color:var(--muted);margin-bottom:20px;flex:1}
.news-empty{
  margin-top:44px;background:var(--surface);border:1px dashed var(--line);border-radius:var(--radius);
  padding:52px 30px;text-align:center;color:var(--muted);
}
.news-empty strong{display:block;font-family:"Noto Serif SC",serif;font-size:1.1rem;color:var(--text);margin-bottom:8px}
.news-empty a{display:inline-block;margin-top:18px}

/* ---------- faq ---------- */
.faq-sticky{position:sticky;top:120px}
.faq-accordion{margin:0;border-top:1px solid var(--line)}
.faq-accordion .accordion-item{border-bottom:1px solid var(--line)}
.faq-accordion .accordion-title{
  display:flex;justify-content:space-between;align-items:flex-start;gap:20px;
  padding:24px 0;font-family:"Noto Serif SC",serif;font-size:1.1rem;font-weight:700;color:var(--text);
  border:0;background:transparent;
}
.faq-accordion .accordion-title::before{
  content:"\f067";font-family:"Font Awesome 6 Free";font-weight:900;
  font-size:.72rem;color:var(--copper);order:2;margin-top:8px;transition:transform .22s var(--ease);
}
.faq-accordion .accordion-item.is-active .accordion-title::before{content:"\f068"}
.faq-accordion .accordion-title:hover{color:var(--copper)}
.faq-accordion .accordion-content{
  padding:0 0 26px;color:var(--muted);font-size:.98rem;border:0;background:transparent;
}
.faq-accordion .accordion-content p{max-width:640px}

/* ---------- cta ---------- */
.cta-section{background:var(--ink);color:#F4EFE8;position:relative;overflow:hidden}
.cta-section::after{
  content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;
  border:1px solid rgba(197,106,45,.28);border-radius:50%;pointer-events:none;
}
.cta-inner{padding:110px 0 104px;position:relative;z-index:2}
.cta-section h2{font-size:clamp(1.8rem,2.6vw,2.4rem);color:#fff;margin-bottom:16px}
.cta-section .sec-desc{color:rgba(244,239,232,.72);margin-bottom:30px}
.cta-points li{
  display:flex;gap:12px;align-items:flex-start;font-size:.95rem;
  color:rgba(244,239,232,.82);padding:9px 0;
}
.cta-points i{color:var(--copper);margin-top:7px;font-size:.75rem}
.form-card{
  background:var(--surface);color:var(--text);border-radius:var(--radius);
  padding:36px 34px;box-shadow:0 20px 50px rgba(0,0,0,.22);
}
.form-card h3{font-size:1.2rem;margin-bottom:6px}
.form-card .form-note{font-size:.86rem;color:var(--muted);margin-bottom:24px}
.field{margin-bottom:18px}
.field label{display:block;font-size:.86rem;color:var(--muted);margin-bottom:8px;letter-spacing:.04em}
.field input,.field textarea{
  width:100%;padding:13px 14px;border:1px solid var(--line);border-radius:var(--radius-s);
  background:#FCFAF7;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field input:focus,.field textarea:focus{
  border-color:var(--copper);box-shadow:0 0 0 3px rgba(197,106,45,.12);outline:none;
}
.field textarea{min-height:104px;resize:vertical}
.privacy{font-size:.78rem;color:var(--muted);margin-top:14px;line-height:1.7}
.form-status{font-size:.86rem;color:var(--jade);margin-top:12px;min-height:20px}

/* ---------- footer ---------- */
.site-footer{background:#0D0F0E;color:rgba(244,239,232,.72);padding:78px 0 34px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.footer-brand .brand-mark{background:var(--copper)}
.footer-brand span{font-family:"Noto Serif SC",serif;font-size:1.2rem;color:#fff}
.site-footer p{font-size:.9rem;line-height:1.9;max-width:340px}
.footer-title{
  font-size:.82rem;letter-spacing:.2em;color:rgba(244,239,232,.5);
  text-transform:uppercase;margin-bottom:18px;
}
.footer-links li{margin-bottom:11px}
.footer-links a{font-size:.94rem;color:rgba(244,239,232,.78)}
.footer-links a:hover{color:var(--copper)}
.footer-bottom{
  margin-top:56px;padding-top:24px;border-top:1px solid rgba(244,239,232,.14);
  display:flex;flex-wrap:wrap;gap:16px;justify-content:space-between;font-size:.84rem;
  color:rgba(244,239,232,.5);
}
.footer-bottom a{color:rgba(244,239,232,.6)}
.footer-bottom a:hover{color:var(--copper)}

@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
}

/* ---------- responsive ---------- */
@media screen and (max-width:1024px){
  :root{--sp-sec:88px}
  .main-nav{gap:22px}
  .main-nav a{font-size:.92rem}
  .hero-inner{padding:88px 0 76px}
  .case-list li{gap:18px}
  .step{padding-right:24px}
}
@media screen and (max-width:860px){
  .main-nav{display:none}
  .nav-cta{display:none}
  .nav-toggle{display:inline-flex;align-items:center;gap:8px}
  .trustbar-inner{grid-template-columns:repeat(2,1fr)}
  .trust-cell{border-left:0;border-top:1px solid var(--line);padding:24px 0}
  .trust-cell:nth-child(-n+2){border-top:0}
  .trust-cell:nth-child(even){padding-left:22px;border-left:1px solid var(--line)}
  .steps{grid-template-columns:1fr;margin-top:40px}
  .step{padding:30px 0 26px}
  .steps-note{margin-top:34px}
  .news-grid{grid-template-columns:1fr;gap:18px}
  .faq-sticky{position:static;margin-bottom:28px}
  .stat-row{grid-template-columns:1fr}
  .cta-inner{padding:80px 0 76px}
}
@media screen and (max-width:640px){
  :root{--sp-sec:64px}
  .grid-container{padding-left:20px;padding-right:20px}
  body{font-size:1rem}
  .topbar{min-height:70px}
  .brand-name{font-size:1.08rem}
  .hero-inner{padding:68px 0 60px}
  .hero h1{font-size:clamp(1.9rem,7.4vw,2.4rem)}
  .hero-lead{font-size:1rem}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .hero-facts{gap:22px}
  .hero-facts div{min-width:44%}
  .hero-panel{padding:26px 22px;margin-top:36px}
  .case-visual{margin-bottom:28px}
  .case-list li{flex-direction:column;gap:14px}
  .case-thumb{width:100%;flex:none;height:170px}
  .form-card{padding:28px 22px}
  .footer-bottom{flex-direction:column;gap:10px}
  .stat strong{font-size:1.6rem}
}

/* roulang page: article */
:root{
  --ink:#111413;
  --ink-soft:#1D1B18;
  --copper:#C56A2D;
  --copper-deep:#A8541F;
  --paper:#F7F4EF;
  --surface:#FFFFFF;
  --surface-2:#F1ECE5;
  --muted:#6B645C;
  --line:#DDD6CC;
  --jade:#2F6F62;
  --radius-s:4px;
  --radius-m:8px;
  --radius-l:10px;
  --shadow:0 10px 30px rgba(0,0,0,.06);
  --shadow-hover:0 14px 36px rgba(0,0,0,.09);
  --container:1260px;
  --ease:cubic-bezier(.2,.8,.2,1);
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-serif:"Noto Serif SC","Songti SC",Georgia,serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-soft);
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.85;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease);}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--copper);outline-offset:3px;}
button{font-family:inherit;}
h1,h2,h3,h4{font-family:var(--font-serif);color:var(--ink);margin:0;font-weight:600;letter-spacing:.01em;}
p{margin:0 0 1rem;}
ul,ol{margin:0;padding:0;list-style:none;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;}
.grid-container{max-width:var(--container);margin:0 auto;padding:0 24px;}
.grid-container.full{padding:0;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--radius-s);
  font-size:.95rem;font-weight:500;letter-spacing:.04em;
  border:1px solid transparent;cursor:pointer;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease);
}
.btn-solid{background:var(--ink);color:#fff;}
.btn-solid:hover{background:var(--copper);color:#fff;}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line);}
.btn-ghost:hover{border-color:var(--ink);color:var(--ink);}
.btn-line{background:transparent;border-color:rgba(255,255,255,.4);color:#fff;}
.btn-line:hover{background:#fff;color:var(--ink);border-color:#fff;}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:.92rem;font-weight:500;color:var(--copper);
  border-bottom:1px solid transparent;padding-bottom:2px;
}
.btn-link::after{content:"→";transition:transform .22s var(--ease);}
.btn-link:hover{color:var(--copper-deep);border-bottom-color:var(--copper-deep);}
.btn-link:hover::after{transform:translateX(3px);}
.btn-block{width:100%;}

.tag{
  display:inline-block;padding:4px 12px;border-radius:999px;
  background:var(--surface-2);color:var(--muted);
  font-size:.78rem;letter-spacing:.08em;
}
.tag-copper{background:rgba(197,106,45,.12);color:var(--copper-deep);}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,244,239,.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  position:relative;
  display:flex;align-items:center;justify-content:space-between;
  height:80px;gap:24px;
}
.brand{display:flex;align-items:center;gap:11px;}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:var(--radius-s);
  background:var(--ink);color:#fff;
  font-family:var(--font-sans);font-size:.8rem;font-weight:700;letter-spacing:.06em;
}
.brand-name{font-family:var(--font-serif);font-size:1.16rem;color:var(--ink);letter-spacing:.02em;}
.main-nav{display:flex;align-items:center;gap:34px;}
.main-nav a{
  position:relative;font-size:.95rem;color:var(--muted);
  padding:8px 0;letter-spacing:.02em;
}
.main-nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--copper);transform:scaleX(0);transform-origin:left;
  transition:transform .24s var(--ease);
}
.main-nav a:hover{color:var(--ink);}
.main-nav a:hover::after{transform:scaleX(1);}
.main-nav a.active{color:var(--ink);font-weight:500;}
.main-nav a.active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:12px;}
.header-actions .btn{padding:10px 20px;font-size:.88rem;}
.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--line);
  background:transparent;border-radius:var(--radius-s);cursor:pointer;
  flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.nav-toggle-bar{width:17px;height:1.5px;background:var(--ink);transition:transform .22s var(--ease),opacity .22s var(--ease);}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1){transform:translateY(5.5px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3){transform:translateY(-5.5px) rotate(-45deg);}

/* ---------- 文章头部 ---------- */
.article-hero{
  padding:64px 0 40px;
  background:
    linear-gradient(180deg,rgba(241,236,229,.7),rgba(247,244,239,0) 70%);
  border-bottom:1px solid var(--line);
}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:9px;
  font-size:.84rem;color:var(--muted);margin-bottom:26px;
}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--copper);}
.breadcrumb .sep{opacity:.45;}
.breadcrumb .current{color:var(--ink-soft);max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.article-title{
  font-size:clamp(1.9rem,3.6vw,3rem);
  line-height:1.22;margin:18px 0 20px;max-width:22ch;
}
.article-lead{
  font-size:1.05rem;color:var(--muted);max-width:64ch;margin-bottom:26px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  font-size:.86rem;color:var(--muted);
  padding-top:20px;border-top:1px solid var(--line);
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--line);}

/* ---------- 封面 ---------- */
.article-cover{
  margin:44px 0 0;
}
.article-cover img{
  width:100%;max-height:480px;object-fit:cover;
  border-radius:var(--radius-l);
  border:1px solid var(--line);
}
.article-cover figcaption{
  margin-top:12px;font-size:.82rem;color:var(--muted);letter-spacing:.02em;
}

/* ---------- 正文 ---------- */
.article-main{padding:62px 0 0;}
.article-body{
  max-width:764px;margin:0 auto;
  font-size:1.06rem;line-height:1.9;color:var(--ink-soft);
  overflow-wrap:break-word;
}
.article-body h2{
  position:relative;font-size:1.72rem;line-height:1.32;
  margin:2.9rem 0 1.1rem;padding-left:18px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.28em;width:3px;height:1.05em;
  background:var(--copper);border-radius:2px;
}
.article-body h3{font-size:1.24rem;margin:2.1rem 0 .8rem;line-height:1.45;}
.article-body h4{font-size:1.06rem;margin:1.6rem 0 .6rem;font-family:var(--font-sans);font-weight:700;}
.article-body p{margin:0 0 1.2rem;}
.article-body ul,.article-body ol{margin:0 0 1.4rem;padding-left:1.4rem;list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin-bottom:.55rem;}
.article-body strong{color:var(--ink);font-weight:700;}
.article-body a{color:var(--copper);border-bottom:1px solid rgba(197,106,45,.35);}
.article-body a:hover{color:var(--copper-deep);border-bottom-color:var(--copper-deep);}
.article-body img{border-radius:var(--radius-m);margin:1.6rem 0;border:1px solid var(--line);}
.article-body blockquote{
  margin:1.9rem 0;padding:1.2rem 1.5rem;
  background:var(--surface-2);
  border-left:3px solid var(--copper);
  border-radius:0 var(--radius-m) var(--radius-m) 0;
  font-family:var(--font-serif);color:var(--ink);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body table{
  width:100%;border-collapse:collapse;margin:1.7rem 0;font-size:.96rem;
}
.article-body th,.article-body td{
  border:1px solid var(--line);padding:.72rem .9rem;text-align:left;vertical-align:top;
}
.article-body th{background:var(--surface-2);color:var(--ink);font-weight:600;}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.6rem 0;}
.article-body code{
  background:var(--surface-2);padding:2px 6px;border-radius:var(--radius-s);
  font-size:.92em;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
}
.article-body figure{margin:1.8rem 0;}
.article-body figure figcaption{font-size:.83rem;color:var(--muted);margin-top:10px;text-align:center;}

/* ---------- 空态 ---------- */
.empty-state{
  max-width:640px;margin:0 auto;text-align:center;
  padding:64px 28px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-l);
}
.empty-state .empty-title{font-family:var(--font-serif);font-size:1.6rem;color:var(--ink);margin-bottom:12px;}
.empty-state p{color:var(--muted);margin-bottom:26px;}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0;}
.section-tight{padding:74px 0;}
.section-head{max-width:720px;margin-bottom:44px;}
.section-label{
  display:inline-flex;align-items:center;gap:10px;
  font-size:.78rem;letter-spacing:.16em;color:var(--copper-deep);
  text-transform:uppercase;margin-bottom:16px;
}
.section-label::before{content:"";width:26px;height:1px;background:var(--copper);}
.section-title{font-size:clamp(1.65rem,2.6vw,2.4rem);line-height:1.24;}
.section-desc{margin-top:16px;color:var(--muted);font-size:1rem;max-width:62ch;}
.section-alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:minmax(0,340px) minmax(0,1fr);gap:64px;align-items:start;}
.faq-aside{position:sticky;top:112px;}
.accordion{border:0;background:transparent;}
.accordion .accordion-item{border:0;border-top:1px solid var(--line);background:transparent;}
.accordion .accordion-item:last-child{border-bottom:1px solid var(--line);}
.accordion .accordion-title{
  display:flex;align-items:flex-start;gap:16px;
  padding:22px 44px 22px 0;border:0;background:transparent;
  font-family:var(--font-serif);font-size:1.06rem;font-weight:600;color:var(--ink);
  line-height:1.5;transition:color .22s var(--ease);
}
.accordion .accordion-title:hover{color:var(--copper);}
.accordion .accordion-title::before{
  content:"+";position:absolute;right:6px;top:20px;
  width:24px;height:24px;line-height:22px;text-align:center;
  font-family:var(--font-sans);font-size:1.1rem;font-weight:400;
  color:var(--copper);background:transparent;margin:0;
}
.accordion .accordion-item.is-active .accordion-title::before{content:"–";}
.accordion .accordion-content{
  padding:0 44px 6px 0;border:0;background:transparent;
  color:var(--muted);font-size:.98rem;line-height:1.85;
}
.accordion .accordion-content p:last-child{margin-bottom:18px;}

/* ---------- 相关推荐 ---------- */
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:26px;}
.related-card{
  display:flex;flex-direction:column;gap:14px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-m);
  padding:26px 24px;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.related-card:hover{transform:translateY(-2px);box-shadow:var(--shadow);border-color:#C7BEB0;}
.related-card .rc-top{display:flex;align-items:center;justify-content:space-between;gap:12px;}
.related-card .rc-time{font-size:.79rem;color:var(--muted);letter-spacing:.03em;}
.related-card h3{font-size:1.12rem;line-height:1.45;}
.related-card p{color:var(--muted);font-size:.94rem;margin:0;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.back-row{display:flex;flex-wrap:wrap;gap:28px;margin-top:44px;padding-top:26px;border-top:1px solid var(--line);}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--ink);color:#fff;border-radius:var(--radius-l);
  padding:64px 56px;
  display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:56px;align-items:center;
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-90px;top:-90px;width:300px;height:300px;
  border:1px solid rgba(255,255,255,.12);border-radius:50%;
}
.cta-band h2{color:#fff;font-size:clamp(1.6rem,2.4vw,2.2rem);line-height:1.26;}
.cta-band p{color:rgba(255,255,255,.72);margin-top:16px;max-width:46ch;}
.cta-points{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px;}
.cta-points span{
  font-size:.8rem;color:rgba(255,255,255,.78);
  border:1px solid rgba(255,255,255,.22);border-radius:999px;padding:5px 14px;
}
.cta-form{position:relative;z-index:2;}
.cta-form .field{margin-bottom:16px;}
.cta-form label{display:block;font-size:.8rem;color:rgba(255,255,255,.65);margin-bottom:7px;letter-spacing:.05em;}
.cta-form input,.cta-form textarea{
  width:100%;padding:13px 15px;
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.2);border-radius:var(--radius-s);
  color:#fff;font-family:var(--font-sans);font-size:.95rem;
  transition:border-color .22s var(--ease),background .22s var(--ease);
}
.cta-form input::placeholder,.cta-form textarea::placeholder{color:rgba(255,255,255,.36);}
.cta-form input:focus,.cta-form textarea:focus{border-color:var(--copper);background:rgba(255,255,255,.1);outline:none;}
.cta-form textarea{min-height:96px;resize:vertical;}
.cta-form .btn-solid{background:var(--copper);}
.cta-form .btn-solid:hover{background:#fff;color:var(--ink);}
.form-note{font-size:.76rem;color:rgba(255,255,255,.45);margin-top:12px;line-height:1.7;}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:96px;padding:74px 0 30px;
  background:var(--surface);border-top:1px solid var(--line);
}
.footer-brand{
  display:flex;align-items:center;gap:11px;
  font-family:var(--font-serif);font-size:1.14rem;color:var(--ink);
  margin-bottom:18px;
}
.site-footer p{color:var(--muted);font-size:.92rem;max-width:38ch;}
.footer-title{
  font-family:var(--font-sans);font-size:.78rem;letter-spacing:.16em;
  color:var(--ink);margin-bottom:18px;text-transform:uppercase;
}
.footer-links li{margin-bottom:11px;}
.footer-links a{font-size:.92rem;color:var(--muted);}
.footer-links a:hover{color:var(--copper);}
.footer-links li span{font-size:.92rem;color:var(--muted);}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;
  margin-top:56px;padding-top:24px;border-top:1px solid var(--line);
  font-size:.84rem;color:var(--muted);
}
.footer-bottom a{color:var(--muted);}
.footer-bottom a:hover{color:var(--copper);}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1024px){
  .faq-layout{grid-template-columns:1fr;gap:36px;}
  .faq-aside{position:static;}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cta-band{padding:52px 40px;gap:40px;}
}
@media screen and (max-width:860px){
  .nav-toggle{display:flex;}
  .main-nav{
    display:none;
    position:absolute;left:-24px;right:-24px;top:100%;
    flex-direction:column;align-items:flex-start;gap:0;
    background:var(--surface);border-bottom:1px solid var(--line);
    padding:10px 24px 20px;
    box-shadow:0 18px 34px rgba(0,0,0,.07);
  }
  .main-nav.is-open{display:flex;}
  .main-nav a{width:100%;padding:14px 0;border-bottom:1px solid var(--line);}
  .main-nav a::after{display:none;}
  .main-nav a:last-child{border-bottom:0;}
  .header-actions .btn{display:none;}
  .section{padding:72px 0;}
  .section-tight{padding:58px 0;}
  .article-hero{padding:48px 0 34px;}
  .cta-band{grid-template-columns:1fr;padding:44px 28px;}
  .site-footer{margin-top:72px;padding:56px 0 26px;}
  .footer-brand{margin-top:8px;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media screen and (max-width:640px){
  body{font-size:16px;}
  .grid-container{padding:0 18px;}
  .related-grid{grid-template-columns:1fr;}
  .article-body{font-size:1rem;}
  .article-body h2{font-size:1.42rem;}
  .article-body h3{font-size:1.14rem;}
  .article-cover img{max-height:280px;}
  .btn{width:100%;}
  .btn-link{width:auto;}
  .header-actions{display:none;}
  .back-row{gap:18px;flex-direction:column;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category1 */
:root{
  --ink:#111413;
  --ink-soft:#1D1B18;
  --copper:#C56A2D;
  --copper-dark:#A9561F;
  --paper:#F7F4EF;
  --surface:#FFFFFF;
  --surface-2:#F1ECE5;
  --muted:#6B645C;
  --line:#DDD6CC;
  --jade:#2F6F62;
  --radius-s:4px;
  --radius-m:8px;
  --radius-l:10px;
  --shadow:0 10px 30px rgba(0,0,0,.06);
  --ease:cubic-bezier(.2,.8,.2,1);
  --container:1260px;
  --font-serif:"Noto Serif SC","Songti SC",Georgia,serif;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-num:"Inter","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-soft);
  font-family:var(--font-sans);
  font-size:1.0625rem;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease)}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--copper);outline-offset:2px}
button,input,textarea,select{font-family:inherit;font-size:inherit;color:inherit}
h1,h2,h3,h4{font-family:var(--font-serif);color:var(--ink);margin:0;line-height:1.18;font-weight:600;letter-spacing:.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
.grid-container{max-width:var(--container);padding-left:24px;padding-right:24px;margin-left:auto;margin-right:auto}

/* header */
.site-header{position:sticky;top:0;z-index:60;background:rgba(247,244,239,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:80px}
.brand{display:inline-flex;align-items:center;gap:12px}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border:1px solid var(--ink);border-radius:var(--radius-s);font-family:var(--font-num);font-weight:600;font-size:.9rem;letter-spacing:.06em;color:var(--ink);transition:background-color .22s var(--ease),color .22s var(--ease)}
.brand:hover .brand-mark{background:var(--ink);color:#fff}
.brand-text{font-family:var(--font-serif);font-size:1.2rem;font-weight:600;color:var(--ink)}
.main-nav{display:flex;align-items:center;gap:38px}
.main-nav a{position:relative;font-size:.98rem;color:var(--muted);padding:6px 0}
.main-nav a::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--copper);transform:scaleX(0);transform-origin:left;transition:transform .22s var(--ease)}
.main-nav a:hover{color:var(--ink)}
.main-nav a:hover::after{transform:scaleX(1)}
.main-nav a.active{color:var(--ink);font-weight:500}
.main-nav a.active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:14px}
.nav-toggle{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:var(--radius-s);background:transparent;cursor:pointer;padding:0;align-items:center;justify-content:center;flex-direction:column;gap:5px}
.nav-toggle span{display:block;width:18px;height:1.5px;background:var(--ink);transition:transform .22s var(--ease),opacity .22s var(--ease)}
.nav-toggle.is-open span:nth-child(1){transform:translateY(6.5px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}
.nav-drawer{display:none;border-top:1px solid var(--line);background:var(--paper);padding:8px 24px 22px}
.nav-drawer.is-open{display:block}
.nav-drawer a{display:block;padding:14px 0;border-bottom:1px solid var(--line);color:var(--muted);font-size:1rem}
.nav-drawer a.active{color:var(--ink);font-weight:500}
.nav-drawer .btn{margin-top:18px;border-bottom:none}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 28px;border-radius:var(--radius-s);font-size:.96rem;font-weight:500;border:1px solid transparent;cursor:pointer;transition:background-color .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease)}
.btn-primary{background:var(--ink);color:#fff;border-color:var(--ink)}
.btn-primary:hover{background:var(--copper);border-color:var(--copper);color:#fff;transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--ink);color:var(--ink);transform:translateY(-1px)}
.btn-line{background:transparent;color:var(--ink);border-color:var(--ink);padding:10px 20px;font-size:.9rem}
.btn-line:hover{background:var(--ink);color:#fff}
.btn-sm{padding:9px 18px;font-size:.88rem}
.btn-block{width:100%}

/* tags & micro */
.tag{display:inline-block;padding:5px 12px;border:1px solid var(--line);border-radius:100px;font-size:.78rem;letter-spacing:.08em;color:var(--muted);background:var(--surface)}
.tag-copper{color:var(--copper);border-color:rgba(197,106,45,.35);background:rgba(197,106,45,.06)}
.eyebrow{font-family:var(--font-num);font-size:.8rem;letter-spacing:.22em;text-transform:uppercase;color:var(--copper)}
.section{padding:104px 0}
.section-tight{padding:72px 0}
.section-head{max-width:760px;margin-bottom:56px}
.section-head h2{font-size:clamp(1.8rem,3vw,2.6rem);margin:16px 0 18px}
.section-head p{color:var(--muted);font-size:1.02rem}
.rule{height:1px;background:var(--line);border:0;margin:0}

/* hero */
.hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);background:var(--paper)}
.hero-bg{position:absolute;inset:0;background-image:linear-gradient(100deg,rgba(247,244,239,.97) 0%,rgba(247,244,239,.9) 46%,rgba(247,244,239,.62) 100%),url('/assets/images/backpic/back-1.webp');background-size:cover;background-position:center right;z-index:0}
.hero-inner{position:relative;z-index:1;padding:96px 0 88px}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:.85rem;color:var(--muted);margin-bottom:26px}
.breadcrumb a:hover{color:var(--copper)}
.breadcrumb span{color:var(--line)}
.hero h1{font-size:clamp(2.4rem,5vw,4rem);max-width:15em;margin:18px 0 22px}
.hero-sub{max-width:44em;color:var(--muted);font-size:1.1rem}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:36px}
.hero-panel{margin-top:64px;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.hero-stat{padding:26px 24px 26px 0;border-right:1px solid var(--line)}
.hero-stat:last-child{border-right:none;padding-right:0}
.hero-stat .num{font-family:var(--font-num);font-size:1.75rem;font-weight:600;color:var(--ink);line-height:1.2}
.hero-stat .lbl{font-size:.88rem;color:var(--muted);margin-top:6px}

/* anchor nav */
.anchor-bar{background:var(--surface);border-bottom:1px solid var(--line);position:sticky;top:80px;z-index:40}
.anchor-list{display:flex;flex-wrap:wrap;gap:8px 30px;padding:20px 0}
.anchor-list a{font-size:.92rem;color:var(--muted);display:inline-flex;align-items:center;gap:9px}
.anchor-list a b{font-family:var(--font-num);font-weight:500;font-size:.76rem;color:var(--copper)}
.anchor-list a:hover{color:var(--ink)}
.anchor-list a:hover b{color:var(--ink)}

/* steps */
.step-list{border-top:1px solid var(--line)}
.step-row{display:grid;grid-template-columns:110px minmax(0,1fr) 230px;gap:32px;padding:34px 0;border-bottom:1px solid var(--line);transition:background-color .22s var(--ease)}
.step-row:hover{background:rgba(255,255,255,.7)}
.step-num{font-family:var(--font-num);font-size:1.5rem;font-weight:600;color:var(--copper);line-height:1.3}
.step-body h3{font-size:1.28rem;margin-bottom:10px}
.step-body p{color:var(--muted);font-size:1rem}
.step-meta{font-size:.88rem;color:var(--muted);border-left:1px solid var(--line);padding-left:20px}
.step-meta dt{font-size:.76rem;letter-spacing:.12em;text-transform:uppercase;color:var(--copper);font-family:var(--font-num)}
.step-meta dd{margin:4px 0 16px;color:var(--ink-soft)}
.step-meta dd:last-child{margin-bottom:0}

/* two-col content */
.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:56px;align-items:start}
.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-m);padding:34px 32px;transition:box-shadow .22s var(--ease),transform .22s var(--ease)}
.panel:hover{box-shadow:var(--shadow);transform:translateY(-2px)}
.panel h3{font-size:1.24rem;margin-bottom:18px}
.check-list li{position:relative;padding:12px 0 12px 26px;border-bottom:1px dashed var(--line);color:var(--muted);font-size:.98rem}
.check-list li:last-child{border-bottom:none}
.check-list li::before{content:"";position:absolute;left:0;top:20px;width:8px;height:8px;border:1px solid var(--copper);border-radius:2px}
.check-list strong{color:var(--ink);font-weight:500}
.warn-list li{position:relative;padding:12px 0 12px 26px;border-bottom:1px dashed var(--line);color:var(--muted);font-size:.98rem}
.warn-list li:last-child{border-bottom:none}
.warn-list li::before{content:"";position:absolute;left:2px;top:21px;width:7px;height:7px;background:var(--jade);border-radius:50%}
.warn-list strong{color:var(--ink);font-weight:500}

/* figure */
.figure{margin-top:56px;border-radius:var(--radius-l);overflow:hidden;border:1px solid var(--line);background:var(--surface-2)}
.figure img{width:100%;height:340px;object-fit:cover;transition:transform .4s var(--ease)}
.figure:hover img{transform:scale(1.03)}
.figcaption{padding:14px 20px;font-size:.84rem;color:var(--muted);background:var(--surface);border-top:1px solid var(--line)}

/* table */
.table-wrap{border:1px solid var(--line);border-radius:var(--radius-m);overflow:hidden;background:var(--surface)}
.table-scroll{overflow-x:auto}
table.flow-table{width:100%;border-collapse:collapse;min-width:720px}
table.flow-table th,table.flow-table td{text-align:left;padding:18px 22px;border-bottom:1px solid var(--line);font-size:.96rem;vertical-align:top}
table.flow-table thead th{background:var(--surface-2);font-family:var(--font-serif);font-weight:600;color:var(--ink);font-size:.98rem;white-space:nowrap}
table.flow-table tbody tr:last-child td{border-bottom:none}
table.flow-table tbody tr:hover{background:rgba(197,106,45,.04)}
table.flow-table td:first-child{font-family:var(--font-num);color:var(--copper);font-weight:500;white-space:nowrap}
.table-note{padding:14px 22px;font-size:.84rem;color:var(--muted);border-top:1px solid var(--line);background:var(--surface)}

/* scenario cards */
.case-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.case-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-m);padding:30px 28px;display:flex;flex-direction:column;gap:14px;transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease)}
.case-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:rgba(197,106,45,.4)}
.case-card h3{font-size:1.16rem}
.case-card p{color:var(--muted);font-size:.96rem;flex:1}
.case-metric{font-family:var(--font-num);font-size:1.6rem;font-weight:600;color:var(--ink);border-top:1px solid var(--line);padding-top:16px}
.case-metric small{display:block;font-family:var(--font-sans);font-size:.82rem;color:var(--muted);font-weight:400;letter-spacing:0;margin-top:4px}
.case-link{font-size:.9rem;color:var(--copper);border-bottom:1px solid transparent}
.case-link:hover{border-color:var(--copper)}

/* faq */
.faq-wrap{display:grid;grid-template-columns:300px minmax(0,1fr);gap:64px;align-items:start}
.faq-aside{position:sticky;top:150px}
.faq-aside h2{font-size:clamp(1.7rem,2.6vw,2.2rem);margin:14px 0 16px}
.faq-aside p{color:var(--muted);font-size:.98rem;margin-bottom:22px}
.accordion{border:none;background:transparent;margin:0}
.accordion .accordion-item{border:1px solid var(--line);border-radius:var(--radius-m);background:var(--surface);margin-bottom:12px;overflow:hidden;transition:border-color .22s var(--ease)}
.accordion .accordion-item.is-active{border-color:rgba(197,106,45,.45)}
.accordion .accordion-item:hover{border-color:var(--ink)}
.accordion .accordion-title{border:none;background:transparent;color:var(--ink);font-size:1.03rem;font-weight:600;line-height:1.5;padding:20px 58px 20px 22px;transition:color .22s var(--ease)}
.accordion .accordion-title:hover,.accordion .accordion-title:focus{background:transparent;color:var(--copper)}
.accordion .accordion-title::before{content:"+";right:22px;color:var(--copper);font-family:var(--font-num);font-size:1.35rem;font-weight:400;line-height:1;top:50%;margin-top:-0.68rem}
.accordion .is-active > .accordion-title::before{content:"–"}
.accordion .accordion-content{border:none;background:transparent;color:var(--muted);font-size:.97rem;padding:0 58px 22px 22px;line-height:1.8}
.accordion .accordion-content p{margin:0}

/* cta */
.cta{background:var(--ink);color:#EDE9E2;border-radius:var(--radius-l);padding:64px 60px;position:relative;overflow:hidden}
.cta::after{content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;border:1px solid rgba(197,106,45,.4);border-radius:50%}
.cta-inner{position:relative;z-index:1;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:64px;align-items:start}
.cta h2{color:#fff;font-size:clamp(1.7rem,2.8vw,2.3rem);margin:16px 0 18px}
.cta p{color:rgba(237,233,226,.72);font-size:1rem}
.cta-points{margin-top:26px;display:grid;gap:12px}
.cta-points li{position:relative;padding-left:22px;font-size:.94rem;color:rgba(237,233,226,.82)}
.cta-points li::before{content:"";position:absolute;left:0;top:11px;width:10px;height:1px;background:var(--copper)}
.form-grid{display:grid;gap:18px}
.field label{display:block;font-size:.86rem;letter-spacing:.06em;color:rgba(237,233,226,.7);margin-bottom:8px}
.field input,.field textarea{width:100%;padding:13px 16px;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.18);border-radius:var(--radius-s);color:#fff;font-size:.97rem;transition:border-color .22s var(--ease),background-color .22s var(--ease)}
.field input::placeholder,.field textarea::placeholder{color:rgba(237,233,226,.4)}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--copper);background:rgba(255,255,255,.09)}
.field textarea{resize:vertical;min-height:104px}
.form-note{font-size:.8rem;color:rgba(237,233,226,.55);line-height:1.7}
.cta .btn-primary{background:var(--copper);border-color:var(--copper);color:#fff}
.cta .btn-primary:hover{background:#fff;border-color:#fff;color:var(--ink)}

/* footer */
.site-footer{background:var(--paper);border-top:1px solid var(--line);padding:76px 0 34px;margin-top:104px}
.footer-brand{display:flex;align-items:center;gap:12px;font-family:var(--font-serif);font-size:1.15rem;font-weight:600;color:var(--ink);margin-bottom:16px}
.footer-brand .brand-mark{width:34px;height:34px;font-size:.82rem}
.site-footer p{color:var(--muted);font-size:.94rem;max-width:34em}
.footer-title{font-family:var(--font-serif);font-size:.98rem;font-weight:600;color:var(--ink);margin-bottom:16px}
.footer-links li{margin-bottom:10px}
.footer-links a,.footer-links li{color:var(--muted);font-size:.93rem}
.footer-links a:hover{color:var(--copper)}
.footer-bottom{display:flex;flex-wrap:wrap;gap:12px 28px;justify-content:space-between;border-top:1px solid var(--line);margin-top:56px;padding-top:24px;font-size:.84rem;color:var(--muted)}
.footer-bottom a{color:var(--muted);border-bottom:1px solid var(--line)}
.footer-bottom a:hover{color:var(--copper);border-color:var(--copper)}

/* reveal on load */
.reveal{opacity:0;transform:translateY(14px);animation:rise .7s var(--ease) forwards}
.reveal-2{animation-delay:.08s}
.reveal-3{animation-delay:.16s}
@keyframes rise{to{opacity:1;transform:none}}

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

/* responsive */
@media screen and (max-width:1024px){
  .main-nav{gap:26px}
  .hero-inner{padding:76px 0 68px}
  .split{gap:34px}
  .faq-wrap{grid-template-columns:1fr;gap:36px}
  .faq-aside{position:static}
  .cta{padding:52px 40px}
  .cta-inner{grid-template-columns:1fr;gap:40px}
  .case-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .step-row{grid-template-columns:80px minmax(0,1fr);gap:22px}
  .step-meta{grid-column:2;border-left:none;padding-left:0;border-top:1px dashed var(--line);padding-top:16px;margin-top:6px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 20px}
}
@media screen and (max-width:768px){
  .section{padding:76px 0}
  .section-tight{padding:56px 0}
  .main-nav{display:none}
  .nav-toggle{display:flex}
  .header-actions .btn-line{display:none}
  .header-inner{min-height:70px}
  .anchor-bar{top:70px;position:static}
  .hero-panel{grid-template-columns:1fr;border-bottom:none}
  .hero-stat{border-right:none;border-bottom:1px solid var(--line);padding:20px 0}
  .hero-stat:last-child{border-bottom:none}
  .split{grid-template-columns:1fr}
  .case-grid{grid-template-columns:1fr}
  .figure img{height:220px}
  .cta{padding:40px 24px;border-radius:var(--radius-m)}
  .site-footer{padding-top:56px;margin-top:76px}
}
@media screen and (max-width:520px){
  body{font-size:1rem}
  .grid-container{padding-left:18px;padding-right:18px}
  .hero-inner{padding:56px 0 48px}
  .hero h1{font-size:clamp(1.9rem,8vw,2.4rem)}
  .hero-sub{font-size:1rem}
  .hero-actions .btn{width:100%}
  .anchor-list{gap:6px 20px;padding:16px 0}
  .step-row{padding:26px 0}
  .panel{padding:26px 22px}
  .accordion .accordion-title{padding:18px 48px 18px 18px}
  .accordion .accordion-content{padding:0 48px 20px 18px}
}

/* roulang page: category2 */
:root{
  --ink:#111413;
  --ink-soft:#1D1B18;
  --copper:#C56A2D;
  --copper-soft:#E2A176;
  --paper:#F7F4EF;
  --surface:#FFFFFF;
  --surface-2:#F1ECE5;
  --text:#1D1B18;
  --muted:#6B645C;
  --line:#DDD6CC;
  --jade:#2F6F62;
  --r-xs:4px;
  --r-sm:8px;
  --r-md:10px;
  --shadow-1:0 10px 30px rgba(17,20,19,.06);
  --shadow-2:0 18px 46px rgba(17,20,19,.10);
  --ease:cubic-bezier(.2,.8,.2,1);
  --font-serif:'Noto Serif SC','Songti SC','SimSun',serif;
  --font-sans:'Noto Sans SC',-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Microsoft YaHei',sans-serif;
  --font-num:'Inter','Helvetica Neue',Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:104px}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:1.0625rem;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease)}
h1,h2,h3,h4{font-weight:600;color:var(--ink);margin:0}
p{margin:0 0 1em}
ul,ol{margin:0;padding:0}
li{list-style:none}
button,input,textarea,select{font-family:inherit;font-size:inherit}
button{border:0;background:none;cursor:pointer;color:inherit}
:focus-visible{outline:2px solid var(--copper);outline-offset:3px;border-radius:2px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--ink);color:#fff;padding:12px 18px;z-index:300;font-size:.9rem}
.skip-link:focus{left:12px;top:12px}
.grid-container{max-width:1280px;width:100%;margin:0 auto;padding-left:clamp(20px,4vw,40px);padding-right:clamp(20px,4vw,40px)}

/* ============ 页头 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(247,244,239,.94);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(197,106,45,.4),transparent);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:80px}
.brand{display:inline-flex;align-items:center;gap:10px;font-family:var(--font-serif);font-size:1.14rem;letter-spacing:.02em;color:var(--ink);flex:none}
.brand-mark{
  display:inline-grid;place-items:center;width:34px;height:34px;
  border:1px solid var(--ink);border-radius:var(--r-xs);
  font-family:var(--font-num);font-size:.74rem;font-weight:600;letter-spacing:.06em;
  transition:background .22s var(--ease),color .22s var(--ease);
}
.brand:hover .brand-mark{background:var(--ink);color:#F7F4EF}
.main-nav{display:flex;align-items:center;gap:34px}
.main-nav a{position:relative;font-size:.95rem;color:var(--muted);padding:8px 0;transition:color .2s var(--ease)}
.main-nav a::after{
  content:"";position:absolute;left:0;bottom:2px;height:2px;width:0;
  background:var(--copper);transition:width .24s var(--ease);
}
.main-nav a:hover{color:var(--ink)}
.main-nav a:hover::after{width:100%}
.main-nav a.active{color:var(--ink);font-weight:500}
.main-nav a.active::after{width:100%}
.header-cta{display:flex;align-items:center;gap:12px;flex:none}
.nav-toggle{
  display:none;align-items:center;gap:8px;padding:9px 14px;
  border:1px solid var(--line);border-radius:var(--r-xs);
  font-size:.85rem;color:var(--ink);
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.nav-toggle:hover{border-color:var(--ink);background:var(--surface)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--r-xs);
  font-size:.95rem;font-weight:500;letter-spacing:.02em;
  border:1px solid transparent;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease);
}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:var(--copper);color:#fff;transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--ink);background:rgba(255,255,255,.7)}
.btn-sm{padding:9px 18px;font-size:.86rem}
.btn-block{width:100%;padding:15px 26px}

/* ============ 内页首屏 ============ */
.page-hero{position:relative;padding:clamp(64px,8vw,112px) 0 clamp(46px,5vw,68px);border-bottom:1px solid var(--line);overflow:hidden}
.page-hero__bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center right;
  opacity:.16;
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(100deg,var(--paper) 0%,rgba(247,244,239,.93) 44%,rgba(247,244,239,.5) 100%);
}
.page-hero .grid-container{position:relative;z-index:2}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:9px;font-size:.82rem;color:var(--muted);margin-bottom:26px}
.breadcrumb a:hover{color:var(--copper)}
.breadcrumb .sep{color:#BEB5A8}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-num);font-size:.76rem;letter-spacing:.16em;
  color:var(--copper);margin:0 0 18px;
}
.eyebrow::before{content:"";width:24px;height:1px;background:var(--copper);flex:none}
.eyebrow--light{color:var(--copper-soft)}
.eyebrow--light::before{background:var(--copper-soft)}
.page-hero h1{
  font-family:var(--font-serif);
  font-size:clamp(2.1rem,4.6vw,3.6rem);
  line-height:1.18;letter-spacing:-.01em;
  max-width:19em;margin:0 0 22px;
}
.page-hero__lead{max-width:44em;font-size:clamp(1.02rem,1.3vw,1.14rem);color:var(--muted);margin:0}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.anchor-nav{display:flex;flex-wrap:wrap;gap:12px 28px;margin:36px 0 0;font-size:.9rem;color:var(--muted)}
.anchor-nav a{display:inline-flex;align-items:center;gap:9px}
.anchor-nav a::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--copper);opacity:.65;transition:opacity .2s var(--ease),transform .2s var(--ease)}
.anchor-nav a:hover{color:var(--ink)}
.anchor-nav a:hover::before{opacity:1;transform:scale(1.3)}
.stat-strip{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-top:1px solid var(--line);margin-top:48px}
.stat-strip__item{padding:26px 22px 2px 0;border-right:1px solid var(--line)}
.stat-strip__item:last-child{border-right:0;padding-right:0}
.stat-strip__item:not(:first-child){padding-left:22px}
.stat-value{display:block;font-family:var(--font-serif);font-size:clamp(1.4rem,2.4vw,1.9rem);line-height:1.2;color:var(--ink);margin-bottom:6px}
.stat-label{font-size:.84rem;color:var(--muted)}

/* ============ 通用板块 ============ */
.section{padding:clamp(64px,8vw,120px) 0}
.section--tight{padding:clamp(40px,5vw,64px) 0}
.section--surface{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:780px;margin-bottom:clamp(34px,4.5vw,60px)}
.section-head h2{
  font-family:var(--font-serif);
  font-size:clamp(1.65rem,2.9vw,2.45rem);
  line-height:1.24;letter-spacing:-.005em;margin:0 0 16px;
}
.section-head p{color:var(--muted);margin:0;font-size:1.02rem;max-width:52em}

/* ============ 功能总览行式列表 ============ */
.func-list{border-top:1px solid var(--line)}
.func-row{
  display:grid;grid-template-columns:84px minmax(0,1fr);
  gap:clamp(16px,2.6vw,40px);
  padding:30px 0;border-bottom:1px solid var(--line);
  transition:background .24s var(--ease);
}
.func-row:hover{background:rgba(255,255,255,.72)}
.func-num{
  font-family:var(--font-num);font-size:.92rem;font-weight:500;
  letter-spacing:.1em;color:var(--muted);padding-top:8px;
  transition:color .24s var(--ease);
}
.func-row:hover .func-num{color:var(--copper)}
.func-body h3{font-family:var(--font-serif);font-size:1.28rem;line-height:1.4;margin:0 0 10px}
.func-body p{color:var(--muted);margin:0 0 16px;max-width:60ch;font-size:.99rem}
.chip-list{display:flex;flex-wrap:wrap;gap:8px}
.chip{
  display:inline-block;padding:4px 13px;border:1px solid var(--line);
  border-radius:999px;background:var(--surface);
  font-size:.79rem;color:var(--muted);letter-spacing:.02em;
}

/* ============ 时间线 / 图文 ============ */
.media-sticky img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border:1px solid var(--line);border-radius:var(--r-sm);
  transition:transform .45s var(--ease);
}
.media-sticky:hover img{transform:scale(1.02)}
.media-caption{margin:14px 0 0;font-size:.84rem;color:var(--muted)}
.timeline{position:relative;margin-top:8px}
.timeline::before{content:"";position:absolute;left:19px;top:14px;bottom:14px;width:1px;background:var(--line)}
.timeline-item{position:relative;display:grid;grid-template-columns:40px minmax(0,1fr);gap:20px;padding-bottom:34px}
.timeline-item:last-child{padding-bottom:0}
.timeline-index{
  position:relative;z-index:1;display:grid;place-items:center;
  width:40px;height:40px;border-radius:50%;
  background:var(--ink);color:#F7F4EF;
  font-family:var(--font-num);font-size:.78rem;font-weight:500;letter-spacing:.04em;
  transition:background .24s var(--ease),transform .24s var(--ease);
}
.timeline-item:hover .timeline-index{background:var(--copper);transform:translateY(-2px)}
.timeline-item h3{font-family:var(--font-serif);font-size:1.2rem;margin:.35em 0 8px}
.timeline-item p{margin:0;color:var(--muted);font-size:.99rem;max-width:58ch}

/* ============ 深色面板 ============ */
.dark-panel{
  position:relative;overflow:hidden;
  background:var(--ink);color:#A9A29A;
  border-radius:var(--r-md);
  padding:clamp(28px,4vw,64px);
}
.dark-panel::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:64px 64px;
}
.dark-panel > *{position:relative;z-index:1}
.dark-panel .section-head{margin-bottom:clamp(28px,3.4vw,44px)}
.dark-panel h2{color:#F3EFE9}
.dark-panel .section-head p{color:#A9A29A}
.hud-grid{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));
  gap:1px;background:rgba(255,255,255,.14);
  border:1px solid rgba(255,255,255,.14);border-radius:var(--r-sm);overflow:hidden;
}
.hud{background:#151917;padding:26px 24px;transition:background .24s var(--ease)}
.hud:hover{background:#1C221F}
.hud__label{
  font-family:var(--font-num);font-size:.72rem;letter-spacing:.16em;
  color:var(--copper-soft);margin:0 0 14px;
}
.hud h3{color:#F2EEE8;font-family:var(--font-serif);font-size:1.1rem;margin:0 0 10px}
.hud p{margin:0;font-size:.92rem;color:#9C968E;line-height:1.8}

/* ============ 场景宽幅图与结果条 ============ */
.wide-media{position:relative;margin:0;border:1px solid var(--line);border-radius:var(--r-sm);overflow:hidden}
.wide-media img{width:100%;aspect-ratio:16/7;object-fit:cover;transition:transform .5s var(--ease)}
.wide-media:hover img{transform:scale(1.02)}
.wide-media figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:20px 24px;
  font-size:.85rem;color:#F1ECE5;
  background:linear-gradient(180deg,transparent,rgba(17,20,19,.8));
}
.result-strip{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border-top:1px solid var(--line);margin-top:46px}
.result-item{padding:28px 26px 0 0;border-right:1px solid var(--line)}
.result-item:not(:first-child){padding-left:26px}
.result-item:last-child{border-right:0;padding-right:0}
.result-k{display:block;font-size:.77rem;letter-spacing:.12em;color:var(--copper);margin-bottom:12px}
.result-value{display:block;font-family:var(--font-serif);font-size:clamp(1.35rem,2.2vw,1.7rem);color:var(--ink);margin-bottom:8px;line-height:1.25}
.result-item p{margin:0;font-size:.92rem;color:var(--muted)}

/* ============ FAQ ============ */
.faq-aside h2{font-family:var(--font-serif);font-size:clamp(1.6rem,2.6vw,2.25rem);line-height:1.25;margin:0 0 16px}
.faq-aside p{color:var(--muted);font-size:.99rem;margin:0 0 22px;max-width:32ch}
.faq-aside .link-more{
  display:inline-flex;align-items:center;gap:8px;font-size:.93rem;color:var(--ink);
  border-bottom:1px solid var(--line);padding-bottom:3px;
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.faq-aside .link-more:hover{color:var(--copper);border-color:var(--copper)}
.acc-list{border-top:1px solid var(--line)}
.acc-item{border-bottom:1px solid var(--line)}
.acc-h{margin:0}
.acc-trigger{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  width:100%;text-align:left;padding:24px 4px;
  font-size:1.04rem;font-weight:600;color:var(--ink);line-height:1.6;
  transition:color .22s var(--ease),padding-left .22s var(--ease);
}
.acc-trigger:hover{color:var(--copper);padding-left:10px}
.acc-icon{position:relative;flex:none;width:14px;height:14px;color:var(--copper)}
.acc-icon::before,.acc-icon::after{content:"";position:absolute;background:currentColor;transition:transform .26s var(--ease),opacity .26s var(--ease)}
.acc-icon::before{top:6.4px;left:0;width:14px;height:1.4px}
.acc-icon::after{left:6.4px;top:0;width:1.4px;height:14px}
.acc-item.is-open .acc-icon::after{transform:rotate(90deg);opacity:0}
.acc-panel{display:grid;grid-template-rows:0fr;transition:grid-template-rows .3s var(--ease)}
.acc-panel > div{overflow:hidden}
.acc-panel p{margin:0;padding:0 4px 26px;color:var(--muted);font-size:.99rem;max-width:62ch}
.acc-item.is-open .acc-panel{grid-template-rows:1fr}

/* ============ 继续阅读条 ============ */
.continue-bar{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;
  padding:26px 30px;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-sm);
}
.continue-title{margin:0;font-family:var(--font-serif);font-size:1.08rem;color:var(--ink)}
.continue-links{display:flex;flex-wrap:wrap;gap:10px 26px;font-size:.93rem;color:var(--muted)}
.continue-links a{display:inline-flex;align-items:center;gap:8px}
.continue-links a::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--copper);opacity:.6}
.continue-links a:hover{color:var(--ink)}

/* ============ 开通 CTA ============ */
.section--dark{background:var(--ink);color:#A9A29A;position:relative;overflow:hidden}
.section--dark::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:72px 72px;
}
.section--dark .grid-container{position:relative;z-index:1}
.section--dark h2{color:#F3EFE9;font-family:var(--font-serif);font-size:clamp(1.65rem,2.9vw,2.4rem);line-height:1.25;margin:0 0 18px}
.cta-lead{color:#A9A29A;font-size:1.02rem;max-width:34em;margin:0}
.cta-points{display:grid;gap:12px;margin:28px 0 0}
.cta-points li{position:relative;padding-left:24px;font-size:.95rem;color:#BDB6AD}
.cta-points li::before{content:"";position:absolute;left:0;top:.72em;width:12px;height:1px;background:var(--copper)}
.cta-form{
  background:rgba(255,255,255,.045);
  border:1px solid rgba(255,255,255,.16);
  border-radius:var(--r-sm);
  padding:clamp(24px,3vw,36px);
}
.field{margin-bottom:18px}
.field label{display:block;font-size:.83rem;color:#A9A29A;margin-bottom:9px;letter-spacing:.04em}
.field input,.field textarea{
  width:100%;padding:13px 15px;
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.18);
  border-radius:var(--r-xs);
  color:#F2EEE8;font-size:.97rem;line-height:1.6;
  transition:border-color .22s var(--ease),background .22s var(--ease);
}
.field input::placeholder,.field textarea::placeholder{color:#7B756D}
.field input:hover,.field textarea:hover{border-color:rgba(255,255,255,.34)}
.field textarea{min-height:104px;resize:vertical}
.form-note{margin:14px 0 0;font-size:.78rem;color:#7B756D;line-height:1.7}
.form-feedback{margin:12px 0 0;font-size:.86rem;color:var(--copper-soft);min-height:1.2em}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:#8E8880;padding:74px 0 28px;font-size:.9rem}
.footer-brand{display:flex;align-items:center;gap:10px;color:#F3EFE9;font-family:var(--font-serif);font-size:1.12rem;margin-bottom:18px}
.site-footer .brand-mark{border-color:rgba(255,255,255,.3);color:#F3EFE9}
.footer-brand + p{margin:0;color:#8E8880;max-width:34em;line-height:1.8}
.footer-title{color:#F3EFE9;font-size:.82rem;letter-spacing:.12em;margin:0 0 16px;font-family:var(--font-num)}
.footer-links li{margin-bottom:10px;color:#8E8880}
.footer-links a{color:#C2BCB3;transition:color .2s var(--ease)}
.footer-links a:hover{color:var(--copper-soft)}
.footer-bottom{
  margin-top:56px;padding-top:22px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  font-size:.82rem;color:#7B756D;
}
.footer-bottom a{color:#A9A29A}
.footer-bottom a:hover{color:var(--copper-soft)}

/* ============ 动效 ============ */
.js .reveal{opacity:0;transform:translateY(16px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.js .reveal.is-visible{opacity:1;transform:none}

/* ============ 响应式 ============ */
@media screen and (max-width:1023px){
  .nav-toggle{display:inline-flex}
  .main-nav{
    display:none;position:absolute;top:100%;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:0;
    background:var(--paper);
    border-top:1px solid var(--line);border-bottom:1px solid var(--line);
    box-shadow:var(--shadow-1);
  }
  .main-nav.is-open{display:flex}
  .main-nav a{width:100%;padding:15px clamp(20px,4vw,40px);border-bottom:1px solid rgba(221,214,204,.7);font-size:.98rem}
  .main-nav a:last-child{border-bottom:0}
  .main-nav a::after{display:none}
  .main-nav a.active{background:var(--surface-2);color:var(--ink)}
  .media-sticky{margin-bottom:36px}
  .faq-aside{margin-bottom:34px}
  .faq-aside p{max-width:none}
  .timeline{margin-top:0}
  .stat-strip{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stat-strip__item{padding:22px 18px 4px 0;border-bottom:1px solid var(--line)}
  .stat-strip__item:nth-child(2n){border-right:0;padding-right:0}
  .stat-strip__item:nth-child(2n+1){padding-left:0}
  .stat-strip__item:nth-child(n+3){padding-top:22px}
  .result-strip{grid-template-columns:1fr}
  .result-item{border-right:0;padding:24px 0;border-bottom:1px solid var(--line)}
  .result-item:not(:first-child){padding-left:0}
  .result-item:last-child{border-bottom:0;padding-bottom:0}
}
@media (min-width:1024px){
  .media-sticky{position:sticky;top:112px}
  .faq-aside{position:sticky;top:112px}
}
@media screen and (max-width:767px){
  body{font-size:1.02rem}
  .page-hero h1{font-size:clamp(1.95rem,7.4vw,2.5rem)}
  .func-row{grid-template-columns:1fr;gap:10px;padding:26px 0}
  .func-num{padding-top:0}
  .wide-media img{aspect-ratio:4/3}
  .continue-bar{flex-direction:column;align-items:flex-start}
  .btn{width:100%}
  .hero-actions .btn{width:100%}
  .header-cta .btn{width:auto}
}
@media screen and (max-width:560px){
  .header-cta .btn-primary{display:none}
  .brand{font-size:1.06rem}
  .stat-strip{grid-template-columns:1fr}
  .stat-strip__item{border-right:0;padding-left:0;padding-right:0}
  .stat-strip__item:not(:first-child){padding-left:0}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important}
  .js .reveal{opacity:1;transform:none}
}