/* roulang page: index */
:root{
  --brand:#FF4D14;
  --brand-dark:#D93B08;
  --brand-soft:#FFEDE6;
  --ink:#0F2E2A;
  --ink-2:#143A34;
  --accent:#C8F04B;
  --bg:#F7F5F0;
  --surface:#FFFFFF;
  --line:#E4E0D6;
  --text:#1C1F1E;
  --muted:#6B726F;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-1:0 1px 2px rgba(15,46,42,.06), 0 8px 24px rgba(15,46,42,.06);
  --shadow-2:0 12px 32px rgba(15,46,42,.12);
  --font:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --mono:ui-monospace,Menlo,Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  padding:0;
  font-family:var(--font);
  font-size:16.5px;
  line-height:1.85;
  letter-spacing:.01em;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius-img);}
a{color:var(--ink);text-decoration:none;transition:color .22s ease,background-color .22s ease;}
a:hover{color:var(--brand);}
ul,ol{margin:0;padding:0;list-style:none;}
p{margin:0 0 1.15em;}
h1,h2,h3,h4{color:var(--ink);margin:0;letter-spacing:-.01em;}
h1{font-size:clamp(30px,4.6vw,52px);font-weight:800;line-height:1.25;}
h2{font-size:clamp(24px,2.6vw,34px);font-weight:700;line-height:1.35;}
h3{font-size:21px;font-weight:600;line-height:1.5;}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input,textarea{font-family:inherit;font-size:inherit;}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;}
.grid-container{max-width:1200px;padding-left:32px;padding-right:32px;}
.grid-container-full{max-width:100%;padding-left:0;padding-right:0;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  min-height:48px;padding:0 26px;border-radius:var(--radius-btn);
  font-weight:700;font-size:16px;line-height:1;white-space:nowrap;
  border:1.5px solid transparent;
  transition:transform .22s ease,background-color .22s ease,color .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.btn i{font-size:15px;}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 18px rgba(255,77,20,.24);}
.btn-primary:hover,.btn-primary:focus{background:var(--brand-dark);color:#fff;transform:translateY(-2px);box-shadow:0 10px 24px rgba(217,59,8,.28);}
.btn-primary:active{transform:translateY(0);}
.btn-outline{background:transparent;border-color:var(--ink);color:var(--ink);}
.btn-outline:hover,.btn-outline:focus{background:var(--ink);color:#fff;}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--line);}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-dark);border-color:#FFCFBE;}
.btn-cream{background:var(--brand-soft);color:var(--brand-dark);}
.btn-cream:hover{background:var(--brand);color:#fff;}
.btn-light{background:#fff;color:var(--ink);}
.btn-light:hover{background:var(--accent);color:var(--ink);}
.btn-lg{min-height:52px;padding:0 30px;font-size:17px;}
.btn:focus-visible,a:focus-visible,button:focus-visible{outline:2px solid var(--ink);outline-offset:3px;}
.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;}

/* ---------- 徽章 / 标签 ---------- */
.tag-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;background:var(--brand-soft);
  color:var(--brand-dark);font-size:12.5px;font-weight:700;letter-spacing:.02em;
}
.tag-badge.on-dark{background:rgba(200,240,75,.16);color:var(--accent);}
.chip{
  display:inline-flex;align-items:center;
  padding:4px 11px;border-radius:999px;background:var(--brand-soft);
  color:var(--brand-dark);font-size:12px;font-weight:600;
}
.chip-dark{background:rgba(15,46,42,.08);color:var(--ink-2);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--brand);
  text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--brand);border-radius:2px;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,245,240,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav-wrap{position:relative;display:flex;align-items:center;gap:16px;min-height:74px;}
.logo{display:flex;align-items:center;gap:11px;flex:0 0 auto;}
.logo-mark{
  width:40px;height:40px;border-radius:50%;
  background:var(--ink);color:#fff;border:2px solid var(--brand);
  display:grid;place-items:center;
  font-family:var(--mono);font-weight:800;font-size:15px;letter-spacing:-.5px;
  transform:skewX(-6deg);
}
.logo-text{font-size:16px;font-weight:800;color:var(--ink);letter-spacing:-.01em;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;gap:8px;
  padding:11px 15px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;color:var(--ink);
}
.nav-link i{font-size:13.5px;color:var(--muted);}
.nav-link::after{
  content:"";position:absolute;left:15px;right:15px;bottom:5px;height:3px;border-radius:3px;
  background:transparent;transition:background-color .22s ease;
}
.nav-link:hover{background:var(--brand-soft);color:var(--brand-dark);}
.nav-link:hover i{color:var(--brand-dark);}
.nav-link:hover::after{background:var(--brand);}
.nav-link.active{background:#fff;box-shadow:var(--shadow-1);color:var(--ink);}
.nav-link.active i{color:var(--brand);}
.nav-link.active::after{background:var(--brand);}
.nav-cta{margin-left:12px;min-height:46px;padding:0 22px;}
.nav-panel-cta{display:none;}
.nav-toggle{
  display:none;align-items:center;gap:8px;margin-left:auto;
  min-height:44px;padding:0 16px;border-radius:var(--radius-btn);
  background:#fff;border:1px solid var(--line);color:var(--ink);font-weight:600;
}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;background:var(--ink);}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(105deg,rgba(15,46,42,.93) 0%,rgba(15,46,42,.82) 48%,rgba(20,58,52,.7) 100%);
}
.hero-inner{position:relative;z-index:2;padding-top:96px;padding-bottom:100px;}
.hero-copy h1{color:#fff;margin:18px 0 20px;}
.hero-sub{color:rgba(255,255,255,.8);font-size:18px;max-width:560px;margin-bottom:32px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:40px;}
.hero-actions .btn-outline{border-color:rgba(255,255,255,.5);color:#fff;}
.hero-actions .btn-outline:hover{background:#fff;color:var(--ink);border-color:#fff;}
.hero-badges{
  display:flex;flex-wrap:wrap;gap:14px;
  border-top:1px solid rgba(255,255,255,.16);padding-top:24px;
}
.hero-badges li{
  display:flex;flex-direction:column;gap:2px;
  padding-right:24px;border-right:1px solid rgba(255,255,255,.14);
}
.hero-badges li:last-child{border-right:0;padding-right:0;}
.hero-badges span{font-size:15px;font-weight:700;color:#fff;letter-spacing:0;}
.hero-badges em{font-style:normal;font-size:12.5px;color:rgba(255,255,255,.6);}
.hero-visual{position:relative;}
.hero-visual img{
  border:3px solid #fff;border-radius:16px;
  box-shadow:0 24px 60px rgba(0,0,0,.42);
  transform:rotate(-1.6deg);
  aspect-ratio:4/3;object-fit:cover;width:100%;
}
.hero-visual::after{
  content:"十年品牌 · 版本 10.2.6";
  position:absolute;left:-10px;bottom:-14px;
  background:var(--accent);color:var(--ink);
  font-size:12.5px;font-weight:700;padding:7px 16px;border-radius:999px;
  box-shadow:0 8px 20px rgba(0,0,0,.25);
}

/* ---------- 分区 ---------- */
.section{padding:96px 0;}
.section--surface{background:#fff;}
.section--tight{padding:80px 0;}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:28px;margin-bottom:44px;
}
.section-head p{color:var(--muted);font-size:16px;margin:12px 0 0;max-width:640px;}
.link-more{
  display:inline-flex;align-items:center;gap:8px;
  font-weight:700;font-size:15px;color:var(--brand-dark);white-space:nowrap;
}
.link-more i{transition:transform .22s ease;}
.link-more:hover i{transform:translateX(4px);}

/* ---------- 价值点 ---------- */
.value-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:26px;}
.value-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:30px 30px 26px;box-shadow:var(--shadow-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.value-card:nth-child(even){margin-top:34px;}
.value-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#FFD9C9;}
.value-num{
  display:inline-block;font-family:var(--mono);font-size:13px;font-weight:700;
  color:var(--brand-dark);background:var(--brand-soft);
  padding:3px 11px;border-radius:999px;margin-bottom:16px;
}
.value-card h3{margin-bottom:10px;}
.value-card p{color:var(--muted);font-size:15.5px;margin:0;line-height:1.8;}

/* ---------- 截图轮播 ---------- */
.shots-wrap{position:relative;}
.shots-track{
  display:flex;gap:22px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:6px 6px 22px;scrollbar-width:none;
}
.shots-track::-webkit-scrollbar{display:none;}
.shot{
  flex:0 0 calc(33.333% - 15px);scroll-snap-align:start;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:14px;box-shadow:var(--shadow-1);
  transition:transform .22s ease,box-shadow .22s ease;
}
.shot:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);}
.shot img{aspect-ratio:16/10;object-fit:cover;width:100%;margin-bottom:14px;}
.shot-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:0 4px 4px;}
.shot-meta span:first-child{font-weight:700;font-size:16px;color:var(--ink);}
.shot-meta span:last-child{font-family:var(--mono);font-size:12.5px;color:var(--muted);}
.shots-controls{display:flex;align-items:center;justify-content:center;gap:20px;margin-top:10px;}
.round-btn{
  width:46px;height:46px;border-radius:50%;
  border:1.5px solid var(--ink);color:var(--ink);background:transparent;
  display:grid;place-items:center;transition:background-color .22s ease,color .22s ease,transform .22s ease;
}
.round-btn:hover{background:var(--ink);color:#fff;transform:translateY(-2px);}
.dots{display:flex;align-items:center;gap:9px;}
.dot{
  width:9px;height:9px;border-radius:50%;background:#D6D1C4;
  transition:background-color .22s ease,transform .22s ease;
}
.dot.is-active{background:var(--brand);transform:scale(1.25);}

/* ---------- 系统要求 ---------- */
.req-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.req-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px 26px;box-shadow:var(--shadow-1);
}
.req-card h3{font-size:19px;display:flex;align-items:center;gap:10px;margin-bottom:6px;}
.req-card h3 i{color:var(--brand);font-size:17px;}
.req-card .req-note{color:var(--muted);font-size:13.5px;margin:0 0 16px;}
.req-list{border-top:1px solid var(--line);}
.req-row{
  display:flex;align-items:baseline;justify-content:space-between;gap:16px;
  padding:11px 0;border-bottom:1px solid var(--line);
}
.req-key{color:var(--muted);font-size:14px;}
.req-val{font-family:var(--mono);font-size:14px;font-weight:600;color:var(--ink);text-align:right;}

/* ---------- 评价墙 ---------- */
.reviews{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.review-card{
  position:relative;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-card);padding:26px 24px 22px;box-shadow:var(--shadow-1);
  transition:transform .22s ease,box-shadow .22s ease;
}
.review-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);}
.review-quote{
  position:absolute;top:14px;right:20px;
  font-family:Georgia,serif;font-size:46px;line-height:1;color:var(--brand-soft);
}
.stars{display:flex;gap:3px;color:var(--brand);font-size:13px;margin-bottom:12px;}
.review-text{font-size:15.5px;color:var(--text);margin:0 0 18px;line-height:1.8;}
.review-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;border-top:1px solid var(--line);padding-top:14px;}
.review-name{font-weight:700;font-size:14.5px;color:var(--ink);}
.review-tag{font-size:12.5px;color:var(--muted);}

/* ---------- CTA 深色区 ---------- */
.cta-band{
  position:relative;overflow:hidden;background:var(--ink);
  padding:88px 0;
}
.cta-band-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-3.webp');
  background-size:cover;background-position:center;opacity:.22;
}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.35fr .65fr;gap:44px;align-items:center;}
.cta-inner h2{color:#fff;margin-bottom:14px;}
.cta-inner p{color:rgba(255,255,255,.72);font-size:16.5px;margin:0 0 28px;max-width:560px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}
.cta-actions .btn-outline{border-color:rgba(255,255,255,.45);color:#fff;}
.cta-actions .btn-outline:hover{background:#fff;color:var(--ink);border-color:#fff;}
.cta-meta{
  display:flex;flex-wrap:wrap;gap:14px 32px;margin-top:32px;
  border-top:1px solid rgba(255,255,255,.16);padding-top:22px;
}
.cta-meta div{display:flex;flex-direction:column;gap:2px;}
.cta-meta span{font-family:var(--mono);font-size:14px;font-weight:700;color:#fff;}
.cta-meta em{font-style:normal;font-size:12.5px;color:rgba(255,255,255,.55);}
.qr-card{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);
  border-radius:var(--radius-card);padding:26px;text-align:center;
}
.qr-box{
  background:#fff;border-radius:12px;padding:14px;display:inline-block;margin-bottom:16px;
}
.qr-box svg{display:block;width:132px;height:132px;}
.qr-card strong{display:block;color:#fff;font-size:16.5px;margin-bottom:6px;}
.qr-card span{display:block;color:rgba(255,255,255,.6);font-size:13px;line-height:1.7;}

/* ---------- 最新信息 ---------- */
.news-list{display:grid;grid-template-columns:1fr;gap:18px;}
.news-card{
  display:grid;grid-template-columns:240px 1fr;gap:24px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:18px;box-shadow:var(--shadow-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#FFD9C9;}
.news-thumb{display:block;border-radius:var(--radius-img);overflow:hidden;}
.news-thumb img{width:100%;height:100%;aspect-ratio:4/3;object-fit:cover;}
.news-body{display:flex;flex-direction:column;justify-content:center;padding-right:8px;}
.news-meta{display:flex;align-items:center;gap:12px;margin-bottom:10px;}
.news-meta time{font-family:var(--mono);font-size:12.5px;color:var(--muted);}
.news-body h3{font-size:19.5px;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-body p{
  color:var(--muted);font-size:15px;margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.empty-state{
  text-align:center;background:#fff;border:1px dashed var(--line);
  border-radius:var(--radius-card);padding:56px 24px;
}
.empty-state i{font-size:30px;color:var(--brand);display:block;margin-bottom:14px;}
.empty-state p{color:var(--muted);margin:0 0 20px;font-size:15.5px;}

/* ---------- FAQ ---------- */
.faq{max-width:880px;margin:0 auto;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  margin-bottom:12px;overflow:hidden;transition:border-color .22s ease,box-shadow .22s ease;
}
.faq-item.open{border-color:#FFD9C9;box-shadow:var(--shadow-1);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:60px;padding:0 24px;text-align:left;
  font-size:16.5px;font-weight:600;color:var(--ink);
  border-left:3px solid transparent;transition:border-color .22s ease,color .22s ease;
}
.faq-item.open .faq-q{border-left-color:var(--brand);color:var(--brand-dark);}
.faq-q:hover{color:var(--brand-dark);}
.faq-icon{position:relative;width:18px;height:18px;flex:0 0 18px;}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand);border-radius:2px;
  transform:translate(-50%,-50%);transition:transform .22s ease,opacity .22s ease;
}
.faq-icon::before{width:14px;height:2px;}
.faq-icon::after{width:2px;height:14px;}
.faq-item.open .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s ease;}
.faq-a-inner{padding:0 26px 24px;color:var(--muted);font-size:15.5px;line-height:1.85;}
.faq-a-inner p{margin:0;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);padding:72px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:52px;}
.site-footer .logo-text{color:#fff;}
.footer-brand p{font-size:14.5px;line-height:1.85;margin:16px 0 18px;color:rgba(255,255,255,.62);}
.footer-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  border:1px solid rgba(200,240,75,.45);color:var(--accent);
  font-size:12.5px;font-weight:700;letter-spacing:.02em;
}
.footer-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:18px;letter-spacing:.02em;}
.footer-links li{margin-bottom:11px;}
.footer-links a{color:rgba(255,255,255,.68);font-size:14.5px;}
.footer-links a:hover{color:var(--accent);}
.footer-dl .btn{width:100%;margin-bottom:12px;}
.footer-dl small{display:block;font-size:12.5px;color:rgba(255,255,255,.5);line-height:1.7;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0;display:flex;flex-wrap:wrap;align-items:center;
  justify-content:space-between;gap:14px;font-size:13px;color:rgba(255,255,255,.5);
}
.footer-bottom a{color:rgba(255,255,255,.6);}
.footer-bottom a:hover{color:var(--accent);}
.to-top{display:inline-flex;align-items:center;gap:8px;color:rgba(255,255,255,.7);font-size:13px;}
.to-top:hover{color:var(--accent);}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1200px){
  .grid-container{padding-left:28px;padding-right:28px;}
}
@media screen and (max-width:1024px){
  .hero-inner{padding-top:76px;padding-bottom:80px;}
  .section{padding:80px 0;}
  .cta-inner{grid-template-columns:1fr;gap:36px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
  .shot{flex:0 0 calc(50% - 11px);}
}
@media screen and (max-width:900px){
  .nav-toggle{display:inline-flex;}
  .nav-cta{display:none;}
  .main-nav{
    display:none;position:absolute;left:20px;right:20px;top:calc(100% + 8px);
    flex-direction:column;align-items:stretch;gap:6px;
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
    box-shadow:var(--shadow-2);padding:12px;margin-left:0;
  }
  .site-header.nav-open .main-nav{display:flex;}
  .nav-link{padding:14px 16px;}
  .nav-link::after{display:none;}
  .nav-panel-cta{display:inline-flex;margin-top:6px;}
  .hero-visual img{transform:none;}
  .value-grid{grid-template-columns:1fr;}
  .value-card:nth-child(even){margin-top:0;}
  .req-grid{grid-template-columns:1fr;}
  .reviews{grid-template-columns:repeat(2,1fr);}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;}
}
@media screen and (max-width:600px){
  body{font-size:16px;}
  .grid-container{padding-left:16px;padding-right:16px;}
  .section{padding:58px 0;}
  .section--tight{padding:52px 0;}
  .hero-inner{padding-top:56px;padding-bottom:64px;}
  .hero-sub{font-size:16.5px;}
  .hero-actions .btn{width:100%;}
  .hero-badges{gap:10px;}
  .hero-badges li{padding-right:16px;}
  .hero-badges span{font-size:13.5px;}
  .hero-visual::after{left:6px;font-size:11.5px;}
  .value-card{padding:24px 20px;}
  .shot{flex:0 0 84%;}
  .reviews{grid-template-columns:1fr;}
  .news-card{grid-template-columns:1fr;gap:16px;padding:14px;}
  .news-thumb img{aspect-ratio:16/9;}
  .news-body{padding-right:0;padding-bottom:6px;}
  .cta-band{padding:60px 0;}
  .cta-actions .btn{width:100%;}
  .faq-q{font-size:15.5px;padding:0 18px;min-height:56px;}
  .faq-a-inner{padding:0 20px 20px;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (prefers-reduced-motion: reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category1 */
:root{
  --brand:#FF4D14;
  --brand-dark:#D93B08;
  --brand-soft:#FFEDE6;
  --ink:#0F2E2A;
  --ink-2:#143A34;
  --accent:#C8F04B;
  --bg:#F7F5F0;
  --surface:#FFFFFF;
  --line:#E4E0D6;
  --text:#1C1F1E;
  --muted:#6B726F;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-card:0 1px 2px rgba(15,46,42,.06),0 8px 24px rgba(15,46,42,.06);
  --shadow-hover:0 12px 32px rgba(15,46,42,.12);
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
  --sans:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;padding:0;
  font-family:var(--sans);
  font-size:16.5px;line-height:1.85;letter-spacing:.01em;
  color:var(--text);background:var(--bg);
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-radius:var(--radius-img);}
a{color:var(--ink);text-decoration:none;transition:color .22s ease,background-color .22s ease,border-color .22s ease,transform .22s ease;}
a:hover{color:var(--brand);}
p{margin:0 0 1.15em;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;}
button{font-family:inherit;cursor:pointer;}
:focus-visible{outline:2px solid var(--ink);outline-offset:3px;border-radius:6px;}
.grid-container{max-width:1200px;padding-left:32px;padding-right:32px;}
.numeric{font-family:var(--mono);font-variant-numeric:tabular-nums;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 28px;
  border-radius:var(--radius-btn);border:1.5px solid transparent;
  font-size:15.5px;font-weight:700;line-height:1;
  transition:all .22s ease;white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(255,77,20,.24);}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-2px);box-shadow:0 10px 22px rgba(255,77,20,.3);}
.btn-primary:active{transform:translateY(0);}
.btn-outline{background:transparent;border-color:var(--ink);color:var(--ink);}
.btn-outline:hover{background:var(--ink);color:#fff;transform:translateY(-2px);}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--ink);}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand);border-color:var(--brand-soft);}
.btn-sm{min-height:44px;padding:0 20px;font-size:14.5px;}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;border-radius:999px;
  font-size:12px;font-weight:600;line-height:1.5;
}
.badge-soft{background:var(--brand-soft);color:var(--brand-dark);}
.badge-ink{background:var(--ink);color:#fff;}
.badge-line{background:transparent;border:1px solid var(--accent);color:var(--ink);}
.tag{
  display:inline-block;padding:3px 11px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand-dark);
  font-size:12.5px;font-weight:600;
}

/* ============ 页头导航 ============ */
.site-header{
  position:sticky;top:0;z-index:120;
  background:rgba(247,245,240,.92);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav-wrap{display:flex;align-items:center;gap:18px;min-height:76px;}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{
  width:40px;height:40px;flex:0 0 40px;border-radius:50%;
  background:var(--ink);color:var(--accent);
  display:inline-flex;align-items:center;justify-content:center;
  font-family:var(--mono);font-weight:700;font-size:16px;letter-spacing:-.02em;
  transform:skewX(-6deg);
}
.logo-text{font-size:16px;font-weight:800;color:var(--ink);letter-spacing:-.01em;}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;gap:7px;
  min-height:44px;padding:0 16px;border-radius:var(--radius-btn);
  font-size:14.5px;font-weight:600;color:var(--ink-2);
  background:transparent;transition:all .22s ease;
}
.nav-link i{color:var(--muted);font-size:13px;transition:color .22s ease;}
.nav-link::after{
  content:"";position:absolute;left:16px;right:16px;bottom:6px;height:3px;
  border-radius:3px;background:transparent;transition:background-color .22s ease;
}
.nav-link:hover{background:#fff;color:var(--brand-dark);}
.nav-link:hover i{color:var(--brand);}
.nav-link.active{color:var(--brand-dark);background:#fff;}
.nav-link.active::after{background:var(--brand);}
.nav-link.active i{color:var(--brand);}
.nav-cta{margin-left:10px;}
.nav-panel-cta{display:none;}
.nav-toggle{
  display:none;align-items:center;gap:8px;margin-left:auto;
  min-height:44px;padding:0 18px;border-radius:var(--radius-btn);
  background:#fff;border:1.5px solid var(--line);color:var(--ink);
  font-size:14.5px;font-weight:700;
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand);}

/* ============ Hero ============ */
.page-hero{
  position:relative;overflow:hidden;
  background-image:linear-gradient(96deg,rgba(15,46,42,.94) 0%,rgba(15,46,42,.78) 52%,rgba(15,46,42,.55) 100%),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  padding:82px 0 74px;
}
.page-hero::after{
  content:"";position:absolute;right:-80px;top:-60px;width:420px;height:420px;
  border-radius:50%;background:radial-gradient(circle,rgba(200,240,75,.16),transparent 68%);
  pointer-events:none;
}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);gap:48px;align-items:center;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12.5px;color:rgba(255,255,255,.72);margin-bottom:18px;}
.crumb a{color:rgba(255,255,255,.86);}
.crumb a:hover{color:var(--accent);}
.crumb span.sep{color:rgba(255,255,255,.45);}
.crumb .current{color:rgba(255,255,255,.6);}
.page-hero h1{
  color:#fff;font-size:clamp(28px,4vw,46px);font-weight:800;line-height:1.28;letter-spacing:-.01em;
}
.page-hero .hero-sub{
  margin:20px 0 0;color:rgba(255,255,255,.86);font-size:17px;line-height:1.85;max-width:640px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-actions .btn-outline{border-color:rgba(255,255,255,.6);color:#fff;}
.hero-actions .btn-outline:hover{background:#fff;color:var(--ink);border-color:#fff;}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:26px;margin-top:34px;
  padding-top:26px;border-top:1px solid rgba(255,255,255,.2);
}
.hero-stat{min-width:110px;}
.hero-stat b{display:block;font-family:var(--mono);font-size:22px;color:var(--accent);font-variant-numeric:tabular-nums;line-height:1.4;}
.hero-stat span{font-size:13px;color:rgba(255,255,255,.7);}
.hero-visual{position:relative;}
.hero-visual img{
  border:3px solid rgba(255,255,255,.9);border-radius:var(--radius-img);
  box-shadow:0 18px 44px rgba(0,0,0,.35);transform:rotate(-1.6deg);
  width:100%;aspect-ratio:4/3;object-fit:cover;
}
.hero-visual .float-badge{
  position:absolute;left:-16px;bottom:-18px;
  background:#fff;border:1px solid var(--line);border-radius:999px;
  padding:9px 18px;display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;color:var(--ink);box-shadow:var(--shadow-card);
}
.hero-visual .float-badge i{color:var(--brand);}

/* ============ 板块通用 ============ */
.section{padding:96px 0;}
.section-alt{background:#fff;}
.section-ink{background:var(--ink);color:rgba(255,255,255,.86);}
.section-ink h2,.section-ink h3{color:#fff;}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-head h2{font-size:clamp(23px,2.6vw,34px);line-height:1.35;}
.section-head p{margin-top:16px;color:var(--muted);font-size:16px;}
.section-ink .section-head p{color:rgba(255,255,255,.72);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;
  color:var(--brand);margin-bottom:14px;font-family:var(--mono);
}

/* ============ 引导语 ============ */
.lead-block{
  background:#fff;border:1px solid var(--line);border-left:2px solid var(--ink);
  border-radius:var(--radius-card);padding:32px 34px;box-shadow:var(--shadow-card);
}
.lead-block p{margin:0;color:var(--text);font-size:16.5px;line-height:1.9;}
.lead-block p + p{margin-top:14px;}

/* ============ 卡片网格 ============ */
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px;}
.dl-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;display:flex;flex-direction:column;
  box-shadow:var(--shadow-card);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.dl-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#d9d3c4;}
.dl-card .thumb{position:relative;overflow:hidden;background:var(--bg);}
.dl-card .thumb img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:0;transition:transform .4s ease;}
.dl-card:hover .thumb img{transform:scale(1.04);}
.dl-card .thumb .chip{
  position:absolute;left:14px;top:14px;
  background:rgba(15,46,42,.88);color:#fff;border-radius:999px;
  padding:4px 12px;font-size:12px;font-weight:600;backdrop-filter:blur(4px);
}
.dl-card .body{padding:24px 24px 26px;display:flex;flex-direction:column;flex:1;}
.dl-card h3{font-size:19px;line-height:1.5;font-weight:600;}
.dl-card .desc{margin-top:12px;color:var(--muted);font-size:14.5px;line-height:1.8;flex:1;}
.dl-card .meta-list{margin-top:18px;border-top:1px dashed var(--line);padding-top:16px;display:grid;gap:8px;}
.dl-card .meta-list div{display:flex;justify-content:space-between;font-size:13px;color:var(--muted);}
.dl-card .meta-list b{font-family:var(--mono);color:var(--ink);font-weight:600;font-variant-numeric:tabular-nums;}
.dl-card .more{
  margin-top:20px;display:inline-flex;align-items:center;gap:7px;
  font-size:14px;font-weight:700;color:var(--brand-dark);
}
.dl-card .more i{transition:transform .22s ease;}
.dl-card:hover .more i{transform:translateX(4px);}

/* ============ 通栏 CTA 条 ============ */
.cta-strip{
  background:var(--brand-soft);border:1px solid #ffd9ca;border-radius:var(--radius-card);
  padding:30px 34px;display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
}
.cta-strip .cta-text{display:flex;align-items:center;gap:16px;}
.cta-strip .cta-icon{
  width:52px;height:52px;flex:0 0 52px;border-radius:50%;
  background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;font-size:20px;
}
.cta-strip strong{display:block;font-size:18px;color:var(--ink);line-height:1.5;}
.cta-strip small{color:#8a5a48;font-size:13.5px;}

/* ============ 版本记录时间线 ============ */
.timeline{position:relative;padding-left:26px;}
.timeline::before{content:"";position:absolute;left:5px;top:6px;bottom:6px;width:2px;background:var(--line);}
.tl-item{position:relative;padding:0 0 32px 0;}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";position:absolute;left:-26px;top:7px;width:12px;height:12px;border-radius:50%;
  background:#fff;border:3px solid var(--brand);
}
.tl-item h3{font-size:17px;font-weight:600;display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.tl-item .ver{font-family:var(--mono);font-size:13px;color:var(--brand-dark);background:var(--brand-soft);padding:2px 10px;border-radius:999px;font-weight:700;}
.tl-item p{margin:8px 0 0;color:var(--muted);font-size:14.5px;line-height:1.8;}
.tl-item .date{font-family:var(--mono);font-size:12.5px;color:var(--muted);}

/* ============ 参数定义列表 ============ */
.spec-panel{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:8px 26px;box-shadow:var(--shadow-card);
}
.spec-row{
  display:flex;align-items:baseline;justify-content:space-between;gap:20px;
  padding:16px 0;border-bottom:1px solid var(--line);
}
.spec-row:last-child{border-bottom:none;}
.spec-row dt{color:var(--muted);font-size:14.5px;margin:0;}
.spec-row dd{margin:0;color:var(--ink);font-family:var(--mono);font-weight:600;font-size:14.5px;text-align:right;font-variant-numeric:tabular-nums;}
.spec-cols{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;}

/* ============ 数据统计块 ============ */
.stat-strip{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;
  background:var(--line);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;
}
.stat-cell{background:#fff;padding:26px 22px;text-align:center;}
.stat-cell b{display:block;font-family:var(--mono);font-size:26px;color:var(--ink);font-variant-numeric:tabular-nums;line-height:1.4;}
.stat-cell span{font-size:13px;color:var(--muted);}
.section-ink .stat-cell{background:var(--ink-2);}
.section-ink .stat-cell b{color:var(--accent);}
.section-ink .stat-cell span{color:rgba(255,255,255,.68);}

/* ============ FAQ ============ */
.faq-list{display:grid;gap:14px;max-width:880px;}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;transition:border-color .22s ease,box-shadow .22s ease;}
.faq-item.open{border-color:#dfd8c8;box-shadow:var(--shadow-card);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:56px;padding:16px 22px;background:transparent;border:none;text-align:left;
  font-size:16px;font-weight:600;color:var(--ink);position:relative;
}
.faq-q::before{content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:3px;background:var(--brand);opacity:0;transition:opacity .22s ease;}
.faq-item.open .faq-q::before{opacity:1;}
.faq-q i{color:var(--brand);font-size:14px;flex:0 0 auto;transition:transform .22s ease;}
.faq-item.open .faq-q i{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s ease;}
.faq-a p{margin:0;padding:0 22px 22px 22px;color:var(--muted);font-size:15px;line-height:1.85;}

/* ============ 相关分类互链 ============ */
.rel-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.rel-card{
  display:flex;align-items:center;gap:20px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px 26px;box-shadow:var(--shadow-card);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.rel-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#d9d3c4;}
.rel-card .num{
  font-family:var(--mono);font-size:20px;font-weight:700;color:var(--brand);
  border:1px solid var(--line);border-radius:10px;padding:8px 12px;flex:0 0 auto;
}
.rel-card h4{font-size:17px;font-weight:700;color:var(--ink);}
.rel-card p{margin:6px 0 0;font-size:13.5px;color:var(--muted);line-height:1.7;}
.rel-card .arrow{margin-left:auto;color:var(--brand);font-size:16px;transition:transform .22s ease;}
.rel-card:hover .arrow{transform:translateX(4px);}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:rgba(255,255,255,.74);padding:72px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:44px;padding-bottom:48px;}
.footer-brand .logo{margin-bottom:18px;}
.footer-brand .logo-text{color:#fff;}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.66);margin-bottom:16px;}
.footer-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;border:1px solid rgba(200,240,75,.45);
  color:var(--accent);font-size:12.5px;font-weight:600;
}
.footer-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:20px;letter-spacing:.02em;}
.footer-links{display:grid;gap:12px;}
.footer-links a{color:rgba(255,255,255,.68);font-size:14px;}
.footer-links a:hover{color:var(--accent);}
.footer-dl .btn{width:100%;justify-content:center;margin-bottom:12px;}
.footer-dl .btn-ghost{background:transparent;border-color:rgba(255,255,255,.32);color:#fff;}
.footer-dl .btn-ghost:hover{background:rgba(255,255,255,.1);color:var(--accent);border-color:rgba(200,240,75,.5);}
.footer-dl small{display:block;margin-top:6px;font-size:12.5px;color:rgba(255,255,255,.5);line-height:1.7;}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  border-top:1px solid rgba(255,255,255,.14);padding:22px 0 28px;
  font-size:12.5px;color:rgba(255,255,255,.5);
}
.to-top{display:inline-flex;align-items:center;gap:7px;color:rgba(255,255,255,.72);font-size:12.5px;}
.to-top:hover{color:var(--accent);}

/* ============ 响应式 ============ */
@media screen and (max-width:1024px){
  .grid-container{padding-left:24px;padding-right:24px;}
  .nav-link{padding:0 12px;font-size:13.5px;}
  .nav-link::after{left:12px;right:12px;}
  .section{padding:78px 0;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-visual{max-width:520px;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;}
  .stat-strip{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
}
@media screen and (max-width:900px){
  .nav-toggle{display:inline-flex;}
  .nav-cta{display:none;}
  .nav-panel-cta{display:inline-flex;margin-top:12px;width:100%;}
  .main-nav{
    position:absolute;left:16px;right:16px;top:calc(100% + 10px);
    display:none;flex-direction:column;align-items:stretch;gap:6px;
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
    padding:14px;box-shadow:var(--shadow-hover);
  }
  .main-nav.open{display:flex;}
  .nav-link{width:100%;padding:0 16px;min-height:48px;font-size:15px;}
  .nav-link::after{display:none;}
  .nav-link.active{background:var(--brand-soft);}
  .site-header .nav-wrap{position:relative;flex-wrap:wrap;}
  .spec-cols{grid-template-columns:1fr;}
  .rel-grid{grid-template-columns:1fr;}
}
@media screen and (max-width:600px){
  body{font-size:16px;}
  .grid-container{padding-left:16px;padding-right:16px;}
  .page-hero{padding:56px 0 52px;}
  .hero-stats{gap:18px;}
  .hero-stat b{font-size:19px;}
  .section{padding:56px 0;}
  .section-head{margin-bottom:30px;}
  .card-grid{grid-template-columns:1fr;}
  .stat-strip{grid-template-columns:1fr;}
  .cta-strip{padding:24px 22px;flex-direction:column;align-items:flex-start;}
  .cta-strip .btn{width:100%;}
  .lead-block{padding:24px 22px;}
  .spec-panel{padding:6px 18px;}
  .spec-row{flex-direction:column;align-items:flex-start;gap:4px;}
  .spec-row dd{text-align:left;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:34px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px;}
  .rel-card{flex-direction:column;align-items:flex-start;gap:12px;}
  .rel-card .arrow{margin-left:0;}
  .hero-visual img{transform:none;}
  .hero-visual .float-badge{left:8px;bottom:-14px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* roulang page: article */
:root{
  --brand:#FF4D14;
  --brand-dark:#D93B08;
  --brand-soft:#FFEDE6;
  --ink:#0F2E2A;
  --ink-2:#143A34;
  --accent:#C8F04B;
  --bg:#F7F5F0;
  --surface:#FFFFFF;
  --line:#E4E0D6;
  --text:#1C1F1E;
  --muted:#6B726F;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --sh-card:0 1px 2px rgba(15,46,42,.06), 0 8px 24px rgba(15,46,42,.06);
  --sh-hover:0 12px 32px rgba(15,46,42,.12);
  --ease:.22s ease;
  --mono:ui-monospace,Menlo,Consolas,"Courier New",monospace;
}
*,*::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:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--ink-2);text-decoration:none;transition:color var(--ease),background var(--ease),border-color var(--ease);}
a:hover{color:var(--brand-dark);}
p{margin:0;}
h1,h2,h3,h4{margin:0;color:var(--ink);letter-spacing:-.01em;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--ink);outline-offset:2px;}
.grid-container{max-width:1200px;margin:0 auto;padding-left:32px;padding-right:32px;width:100%;}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  height:50px;padding:0 26px;border-radius:var(--r-btn);
  font-size:15px;font-weight:700;letter-spacing:.02em;
  border:1.5px solid transparent;cursor:pointer;white-space:nowrap;
  transition:all var(--ease);
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 18px rgba(255,77,20,.22);}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(217,59,8,.26);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink);}
.btn-ghost:hover{background:var(--ink);color:#fff;transform:translateY(-2px);}
.btn-soft{background:var(--brand-soft);color:var(--brand-dark);border-color:transparent;}
.btn-soft:hover{background:var(--brand);color:#fff;}
.btn-sm{height:44px;padding:0 20px;font-size:14px;}

/* 头部导航 */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(247,245,240,.92);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav-wrap{position:relative;display:flex;align-items:center;gap:22px;padding-top:14px;padding-bottom:14px;}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{
  width:40px;height:40px;border-radius:50%;background:var(--brand);color:#fff;
  display:grid;place-items:center;font-family:var(--mono);font-size:15px;font-weight:800;
  letter-spacing:0;transform:skewX(-6deg);
}
.logo-text{font-size:17px;font-weight:800;color:var(--ink);letter-spacing:-.01em;}
.logo:hover .logo-text{color:var(--brand-dark);}
.main-nav{margin-left:auto;display:flex;align-items:center;gap:6px;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;gap:8px;
  padding:10px 15px;border-radius:10px;font-size:15px;font-weight:600;color:var(--ink-2);
}
.nav-link i{font-size:13px;color:var(--brand);}
.nav-link::after{
  content:"";position:absolute;left:15px;right:15px;bottom:3px;height:3px;border-radius:999px;
  background:transparent;transition:background var(--ease);
}
.nav-link:hover{background:var(--brand-soft);color:var(--brand-dark);}
.nav-link.active{color:var(--brand-dark);}
.nav-link.active::after{background:var(--brand);}
.nav-cta{height:46px;padding:0 22px;font-size:14.5px;margin-left:6px;}
.nav-toggle{
  display:none;align-items:center;gap:8px;margin-left:auto;
  height:44px;padding:0 16px;border-radius:10px;
  border:1.5px solid var(--ink);background:transparent;color:var(--ink);
  font-size:14px;font-weight:700;cursor:pointer;transition:all var(--ease);
}
.nav-toggle:hover{background:var(--ink);color:#fff;}
.nav-panel-cta{display:none;}

/* 文章头部 */
.page-hero{
  position:relative;overflow:hidden;color:#fff;
  background:var(--ink) url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  padding:60px 0 72px;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(15,46,42,.90),rgba(15,46,42,.74));
}
.page-hero .grid-container{position:relative;z-index:2;}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:12.5px;color:rgba(255,255,255,.68);margin-bottom:24px;
}
.breadcrumb a{color:rgba(255,255,255,.88);}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb .sep{opacity:.55;}
.breadcrumb .current{color:rgba(255,255,255,.62);max-width:46ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;margin-bottom:20px;
  padding:6px 14px;border-radius:999px;font-size:12.5px;font-weight:600;
  background:rgba(200,240,75,.14);border:1px solid rgba(200,240,75,.42);color:var(--accent);
}
.article-h1{
  font-size:clamp(28px,4.2vw,46px);font-weight:800;line-height:1.28;
  color:#fff;margin:0 0 24px;max-width:22ch;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;font-size:13.5px;color:rgba(255,255,255,.78);}
.article-meta .pill{
  background:var(--brand);color:#fff;padding:4px 13px;border-radius:999px;
  font-size:12.5px;font-weight:600;
}
.article-meta span{display:inline-flex;align-items:center;gap:7px;}
.article-meta span i{color:var(--accent);font-size:12.5px;}

/* 正文布局 */
.article-shell{padding:56px 0 24px;}
.article-grid{display:grid;grid-template-columns:minmax(0,1fr) 312px;gap:44px;align-items:start;}
.article-main{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-card);padding:44px 48px 40px;min-width:0;
}
.entry-content{max-width:760px;margin:0 auto;font-size:17px;line-height:1.85;color:var(--text);}
.entry-content>*:first-child{margin-top:0;}
.entry-content h2{
  position:relative;font-size:clamp(21px,2.2vw,26px);font-weight:700;line-height:1.4;
  margin:2em 0 .85em;
}
.entry-content h2::after{
  content:"";display:block;width:24px;height:3px;border-radius:999px;background:var(--brand);margin-top:12px;
}
.entry-content h3{font-size:19px;font-weight:600;line-height:1.5;margin:1.7em 0 .6em;}
.entry-content h4{font-size:17px;font-weight:600;margin:1.4em 0 .5em;}
.entry-content p{margin:0 0 1.25em;}
.entry-content ul,.entry-content ol{padding-left:1.4em;margin:0 0 1.35em;}
.entry-content li{margin-bottom:.6em;}
.entry-content a{color:var(--brand-dark);text-decoration:underline;text-underline-offset:3px;}
.entry-content a:hover{color:var(--brand);}
.entry-content strong{font-weight:700;color:var(--ink);}
.entry-content blockquote{
  margin:1.7em 0;padding:18px 24px;border-left:4px solid var(--brand);
  background:var(--brand-soft);border-radius:0 var(--r-img) var(--r-img) 0;color:var(--ink-2);
}
.entry-content blockquote p:last-child{margin-bottom:0;}
.entry-content img{border-radius:var(--r-img);margin:14px 0;}
.entry-content figure{margin:1.7em 0;}
.entry-content figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:10px;line-height:1.6;}
.entry-content hr{border:0;border-top:1px solid var(--line);margin:2.2em 0;}
.entry-content code{
  font-family:var(--mono);font-size:.92em;background:#F2EFE8;
  padding:2px 6px;border-radius:6px;color:var(--ink-2);
}
.entry-content table{
  width:100%;border-collapse:collapse;margin:1.7em 0;font-size:15px;
  border:1px solid var(--line);border-radius:var(--r-img);overflow:hidden;
}
.entry-content th{
  background:var(--ink);color:#F1F6F3;text-align:left;font-weight:600;
  padding:12px 14px;font-size:14.5px;
}
.entry-content td{padding:12px 14px;border-top:1px solid var(--line);vertical-align:top;}
.entry-content tbody tr:nth-child(even) td{background:#FBFAF6;}

.empty-state{text-align:center;padding:64px 20px;max-width:520px;margin:0 auto;}
.empty-state i{font-size:42px;color:var(--brand);}
.empty-state h2{font-size:24px;margin:20px 0 12px;}
.empty-state p{color:var(--muted);font-size:15px;line-height:1.8;margin-bottom:22px;}

/* 文末 */
.article-foot{
  max-width:760px;margin:44px auto 0;padding-top:28px;border-top:1px solid var(--line);
}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:24px;}
.tag{
  display:inline-flex;align-items:center;gap:7px;
  padding:7px 15px;border-radius:999px;background:var(--brand-soft);
  color:var(--brand-dark);font-size:13px;font-weight:600;
}
.tag:hover{background:var(--brand);color:#fff;}
.foot-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* 侧栏 */
.article-side{position:sticky;top:100px;display:flex;flex-direction:column;gap:22px;}
.side-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-card);padding:24px 22px;
}
.side-card h3{font-size:17px;font-weight:700;margin:0 0 10px;}
.side-card p{font-size:14px;color:var(--muted);line-height:1.75;margin:0 0 16px;}
.side-card .btn{width:100%;height:48px;font-size:14.5px;}
.side-card.dark{background:var(--ink);border-color:var(--ink);}
.side-card.dark h3{color:#fff;}
.side-card.dark p{color:#A9BBB5;}
.side-card.dark .btn-ghost{border-color:rgba(255,255,255,.48);color:#fff;}
.side-card.dark .btn-ghost:hover{background:#fff;color:var(--ink);}
.spec-list{list-style:none;margin:16px 0 0;padding:0;}
.spec-list li{
  display:flex;justify-content:space-between;gap:14px;align-items:baseline;
  padding:11px 0;border-bottom:1px solid var(--line);
}
.spec-list li:last-child{border-bottom:0;}
.spec-list .k{font-size:13.5px;color:var(--muted);}
.spec-list .v{font-family:var(--mono);font-size:13.5px;font-weight:600;color:var(--ink);font-variant-numeric:tabular-nums;}
.stamp{
  display:inline-flex;align-items:center;gap:8px;margin-top:16px;
  padding:7px 14px;border-radius:999px;background:var(--brand-soft);
  color:var(--brand-dark);font-size:12.5px;font-weight:600;
}

/* 延伸阅读 */
.section{padding:72px 0;}
.section-head{margin-bottom:30px;max-width:720px;}
.section-head h2{font-size:clamp(22px,2.4vw,30px);font-weight:700;margin:0 0 10px;}
.section-head p{color:var(--muted);font-size:15px;}
.rec-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.rec-card{
  display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-card);transition:all var(--ease);
}
.rec-card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);}
.rec-card img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.rec-body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.rec-body h3{
  font-size:17px;font-weight:700;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rec-body p{
  font-size:14px;color:var(--muted);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rec-more{
  margin-top:auto;display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--brand-dark);
  transition:gap var(--ease),color var(--ease);
}
.rec-card:hover .rec-more{gap:11px;color:var(--brand);}

/* 下载 CTA */
.cta-band{
  background:var(--ink);border-radius:18px;padding:50px 48px;
  display:grid;grid-template-columns:1.25fr 1fr;gap:34px;align-items:center;
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.5vw,31px);font-weight:700;margin:0 0 14px;line-height:1.35;}
.cta-band p{color:#AFC2BC;font-size:15px;line-height:1.8;margin:0;max-width:52ch;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end;}
.cta-band .btn-ghost{border-color:rgba(255,255,255,.5);color:#fff;}
.cta-band .btn-ghost:hover{background:#fff;color:var(--ink);}
.cta-meta{
  grid-column:1 / -1;display:flex;flex-wrap:wrap;gap:12px 34px;
  margin-top:6px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);
  font-size:13px;color:#9FB3AD;
}
.cta-meta b{font-family:var(--mono);color:#E9F2EE;font-weight:600;font-variant-numeric:tabular-nums;}

/* 页脚 */
.site-footer{background:var(--ink);color:#C6D3CE;padding:72px 0 0;margin-top:80px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand .logo-text{color:#fff;}
.footer-brand p{font-size:14px;line-height:1.8;color:#A9BBB5;margin:18px 0 0;max-width:34ch;}
.footer-badge{
  display:inline-flex;align-items:center;gap:8px;margin-top:18px;
  padding:7px 14px;border-radius:999px;background:rgba(200,240,75,.14);
  border:1px solid rgba(200,240,75,.35);color:var(--accent);font-size:12.5px;font-weight:600;
}
.footer-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:18px;letter-spacing:.02em;}
.footer-links{list-style:none;margin:0;padding:0;}
.footer-links li{margin-bottom:12px;}
.footer-links a{color:#A9BBB5;font-size:14px;}
.footer-links a:hover{color:var(--accent);}
.footer-dl{display:flex;flex-direction:column;align-items:flex-start;gap:12px;}
.footer-dl .btn{height:46px;padding:0 20px;font-size:14px;width:100%;}
.footer-dl .btn-ghost{border-color:rgba(255,255,255,.34);color:#E4EDE9;}
.footer-dl .btn-ghost:hover{background:#fff;color:var(--ink);}
.footer-dl small{font-size:12.5px;color:#8FA39D;line-height:1.7;}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px 26px;
  margin-top:56px;padding:22px 0 26px;border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;color:#93A7A1;
}
.footer-bottom .to-top{
  margin-left:auto;display:inline-flex;align-items:center;gap:7px;
  color:var(--accent);font-weight:600;
}
.footer-bottom .to-top:hover{color:#fff;}

@media (max-width:1024px){
  .article-grid{grid-template-columns:1fr;gap:30px;}
  .article-side{position:static;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
}
@media (max-width:900px){
  .grid-container{padding-left:24px;padding-right:24px;}
  .nav-toggle{display:inline-flex;}
  .main-nav{
    display:none;position:absolute;left:24px;right:24px;top:calc(100% + 10px);
    flex-direction:column;align-items:stretch;gap:4px;margin-left:0;
    background:#fff;border:1px solid var(--line);border-radius:16px;
    box-shadow:var(--sh-hover);padding:14px;
  }
  .main-nav.is-open{display:flex;}
  .nav-link{padding:14px 16px;font-size:15px;justify-content:flex-start;}
  .nav-link::after{display:none;}
  .nav-link.active{background:var(--brand-soft);}
  .nav-cta{display:none;}
  .nav-panel-cta{display:inline-flex;width:100%;margin-top:8px;}
  .rec-grid{grid-template-columns:1fr 1fr;}
  .cta-band{grid-template-columns:1fr;padding:36px 28px;gap:24px;}
  .cta-actions{justify-content:flex-start;}
  .section{padding:60px 0;}
}
@media (max-width:640px){
  .grid-container{padding-left:16px;padding-right:16px;}
  .logo-text{font-size:15px;}
  .logo-mark{width:36px;height:36px;font-size:13px;}
  .page-hero{padding:42px 0 52px;}
  .article-h1{max-width:none;}
  .article-main{padding:26px 20px 24px;border-radius:12px;}
  .entry-content{font-size:16px;line-height:1.82;}
  .article-shell{padding:34px 0 12px;}
  .rec-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .footer-bottom .to-top{margin-left:0;}
  .btn{width:100%;}
  .foot-actions .btn,.cta-actions .btn,.article-foot .btn{width:100%;}
  .cta-meta{gap:10px 18px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category2 */
:root{
  --brand:#FF4D14;
  --brand-dark:#D93B08;
  --brand-soft:#FFEDE6;
  --ink:#0F2E2A;
  --ink-2:#143A34;
  --accent:#C8F04B;
  --bg:#F7F5F0;
  --surface:#FFFFFF;
  --line:#E4E0D6;
  --text:#1C1F1E;
  --muted:#6B726F;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-card:0 1px 2px rgba(15,46,42,.06),0 8px 24px rgba(15,46,42,.06);
  --shadow-hover:0 12px 32px rgba(15,46,42,.12);
  --container:1200px;
  --font-sans:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-mono:ui-monospace,Menlo,Consolas,"Courier New",monospace;
  --tr:.22s ease;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16.5px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  letter-spacing:.01em;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p,dl,dd,dt,figure{margin:0;}
:focus-visible{outline:2px solid var(--ink);outline-offset:3px;border-radius:4px;}

.grid-container{
  max-width:var(--container);
  padding-left:32px;
  padding-right:32px;
  margin-left:auto;
  margin-right:auto;
  width:100%;
}

/* ============ 通用组件 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:50px;padding:0 26px;border-radius:var(--radius-btn);
  font-weight:700;font-size:15px;line-height:1;
  transition:var(--tr);border:1.5px solid transparent;white-space:nowrap;
}
.btn i{font-size:14px;}
.btn-primary{background:var(--brand);color:#fff;}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-2px);}
.btn-primary:active{transform:translateY(0);}
.btn-outline{border-color:var(--ink);color:var(--ink);background:transparent;}
.btn-outline:hover{background:var(--ink);color:#fff;transform:translateY(-2px);}
.btn-outline:active{transform:translateY(0);}
.btn-ghost{background:var(--surface);color:var(--ink);border-color:var(--line);}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand);border-color:var(--brand-soft);}
.btn-on-dark{background:#fff;color:var(--ink);}
.btn-on-dark:hover{background:var(--accent);color:var(--ink);transform:translateY(-2px);}

.badge{
  display:inline-flex;align-items:center;gap:7px;
  padding:6px 14px;border-radius:999px;font-size:12.5px;font-weight:600;
  letter-spacing:.02em;line-height:1.4;
}
.badge-soft{background:var(--brand-soft);color:var(--brand-dark);}
.badge-ink{background:var(--ink);color:#fff;}
.badge-line{border:1px solid var(--line);background:var(--surface);color:var(--muted);}
.badge-line i{color:var(--brand);}

.section{padding:104px 0;}
.section-tight{padding:72px 0;}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:28px;margin-bottom:40px;flex-wrap:wrap;
}
.section-head h2{font-size:clamp(24px,2.6vw,34px);font-weight:700;line-height:1.35;letter-spacing:-.01em;color:var(--ink);}
.section-head p{margin-top:12px;color:var(--muted);font-size:15.5px;max-width:720px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:12.5px;font-weight:700;
  color:var(--brand);letter-spacing:.14em;text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--brand);border-radius:2px;}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,245,240,.94);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav-wrap{
  display:flex;align-items:center;gap:18px;
  min-height:74px;position:relative;
}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--ink);flex-shrink:0;}
.logo-mark{
  width:38px;height:38px;border-radius:50%;
  background:var(--ink);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-mono);font-size:15px;font-weight:700;letter-spacing:.02em;
  transform:skewX(-6deg);
}
.logo-mark::first-line{transform:skewX(6deg);}
.logo-text{font-size:16px;letter-spacing:-.01em;line-height:1.3;}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;gap:7px;
  padding:11px 14px;border-radius:9px;
  font-size:14.5px;font-weight:600;color:var(--ink);transition:var(--tr);
}
.nav-link i{font-size:13px;opacity:.7;}
.nav-link:hover{background:var(--brand-soft);color:var(--brand);}
.nav-link.active{color:var(--brand);}
.nav-link.active i{opacity:1;}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:3px;height:3px;
  border-radius:999px;background:var(--brand);
}
.nav-cta{height:44px;padding:0 20px;margin-left:12px;font-size:14.5px;}
.nav-panel-cta{display:none;}
.nav-toggle{
  display:none;align-items:center;gap:8px;
  height:44px;padding:0 16px;border-radius:var(--radius-btn);
  border:1.5px solid var(--ink);color:var(--ink);font-weight:600;font-size:14px;
  margin-left:auto;transition:var(--tr);
}
.nav-toggle:hover{background:var(--ink);color:#fff;}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;
  padding:76px 0 88px;
  background:
    radial-gradient(1000px 460px at 86% -10%, rgba(255,77,20,.10), transparent 62%),
    linear-gradient(180deg,#FFFFFF 0%,var(--bg) 78%);
  border-bottom:1px solid var(--line);
}
.hero-grid{
  display:grid;grid-template-columns:1.06fr .94fr;
  gap:60px;align-items:center;
}
.hero-copy h1{
  font-size:clamp(30px,4.4vw,50px);
  font-weight:800;line-height:1.24;letter-spacing:-.015em;
  color:var(--ink);margin:18px 0 0;
}
.hero-sub{
  margin-top:18px;font-size:18px;font-weight:600;line-height:1.6;color:var(--ink-2);
}
.hero-desc{
  margin-top:16px;font-size:16px;line-height:1.85;color:var(--muted);max-width:620px;
}
.hero-actions{
  display:flex;gap:14px;flex-wrap:wrap;margin-top:32px;
}
.hero-badges{
  display:flex;gap:12px;flex-wrap:wrap;margin-top:30px;
}
.hero-badges .badge{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:12px;}
.hero-figure{position:relative;}
.hero-figure img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:16px;border:3px solid var(--ink);
  box-shadow:0 18px 44px rgba(15,46,42,.16);
  transform:rotate(-1.2deg);
}
.hero-figure::after{
  content:"";position:absolute;inset:auto -14px -16px auto;
  width:118px;height:118px;border-radius:50%;
  background:var(--brand-soft);z-index:-1;
}

/* ============ 功能速览列表 ============ */
.fn-list{border-top:1px solid var(--line);}
.fn-row{
  position:relative;
  display:grid;grid-template-columns:62px 1fr 30px;
  align-items:center;gap:20px;
  padding:20px 22px;
  border-bottom:1px solid var(--line);
  transition:var(--tr);
}
.fn-row::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;
  border-radius:999px;background:var(--brand);opacity:0;transition:var(--tr);
}
.fn-row:hover{background:var(--surface);box-shadow:var(--shadow-card);}
.fn-row:hover::before{opacity:1;}
.fn-num{
  font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  font-size:15px;font-weight:700;color:var(--brand);letter-spacing:.06em;
}
.fn-body h3{font-size:19px;font-weight:600;line-height:1.5;color:var(--ink);}
.fn-body p{margin-top:5px;font-size:14.5px;color:var(--muted);line-height:1.65;}
.fn-arrow{
  display:flex;align-items:center;justify-content:center;
  width:30px;height:30px;border-radius:50%;
  color:var(--muted);transition:var(--tr);
}
.fn-row:hover .fn-arrow{color:var(--brand);transform:translateX(3px);}

/* ============ 流程步骤 ============ */
.steps{
  display:grid;grid-template-columns:repeat(4,1fr);gap:22px;
}
.step-card{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:30px 26px;
  box-shadow:var(--shadow-card);transition:var(--tr);
  position:relative;
}
.step-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);}
.step-num{
  font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  font-size:30px;font-weight:700;color:var(--brand-soft);
  -webkit-text-stroke:1.4px var(--brand);
  letter-spacing:.02em;line-height:1;
}
.step-card h3{margin-top:16px;font-size:18px;font-weight:600;color:var(--ink);}
.step-card p{margin-top:10px;font-size:14.5px;color:var(--muted);line-height:1.7;}

/* ============ 参数对照 ============ */
.param-wrap{
  display:grid;grid-template-columns:1fr 1fr;
  gap:0 48px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:14px 34px;
  box-shadow:var(--shadow-card);
}
.param-item{
  display:flex;align-items:baseline;justify-content:space-between;gap:20px;
  padding:16px 0;border-bottom:1px solid var(--line);
}
.param-item:nth-last-child(-n+2){border-bottom:0;}
.param-key{font-size:14.5px;color:var(--muted);flex-shrink:0;}
.param-val{
  font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  font-size:14.5px;font-weight:600;color:var(--ink);text-align:right;
}

/* ============ 场景卡 ============ */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.scene-card{
  background:var(--surface);border:1px solid var(--line);
  border-left:2px solid var(--ink);
  border-radius:var(--radius-card);padding:32px 28px;
  transition:var(--tr);
}
.scene-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-left-color:var(--brand);}
.scene-ico{
  width:46px;height:46px;border-radius:12px;
  background:var(--brand-soft);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-size:18px;
  margin-bottom:18px;
}
.scene-card h3{font-size:19px;font-weight:600;color:var(--ink);}
.scene-card p{margin-top:10px;font-size:14.8px;color:var(--muted);line-height:1.75;}

/* ============ CTA 深色区 ============ */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--ink);color:#fff;
  border-radius:20px;padding:62px 56px;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-3.webp');
  background-size:cover;background-position:center;
  opacity:.20;
}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg, rgba(15,46,42,.94) 30%, rgba(15,46,42,.62) 100%);
}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:44px;flex-wrap:wrap;}
.cta-inner h2{font-size:clamp(23px,2.5vw,32px);font-weight:700;line-height:1.4;}
.cta-inner p{margin-top:12px;color:rgba(255,255,255,.76);font-size:15.5px;max-width:560px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}
.cta-meta{
  position:relative;z-index:2;display:flex;gap:34px;flex-wrap:wrap;
  margin-top:38px;padding-top:26px;border-top:1px solid rgba(255,255,255,.16);
}
.cta-meta span{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:13px;color:rgba(255,255,255,.72);}
.cta-meta b{color:var(--accent);font-weight:700;margin-right:8px;}

/* ============ FAQ ============ */
.faq-list{border-top:1px solid var(--line);max-width:960px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 20px 20px 18px;text-align:left;
  font-size:17px;font-weight:600;color:var(--ink);
  position:relative;transition:var(--tr);
}
.faq-q::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;
  border-radius:999px;background:var(--brand);opacity:0;transition:var(--tr);
}
.faq-q:hover{background:var(--surface);}
.faq-q:hover::before,.faq-item.open .faq-q::before{opacity:1;}
.faq-item.open .faq-q{color:var(--brand-dark);}
.faq-ico{width:18px;height:18px;flex-shrink:0;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;}
.faq-ico .v{transition:var(--tr);transform-origin:center;transform:scaleY(1);}
.faq-item.open .faq-ico .v{transform:scaleY(0);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s ease;}
.faq-a-inner{padding:0 70px 24px 18px;font-size:15.5px;color:var(--muted);line-height:1.85;}

/* ============ 相关栏目 ============ */
.rel-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.rel-card{
  display:flex;align-items:center;gap:22px;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:22px;
  transition:var(--tr);
}
.rel-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);}
.rel-card img{
  width:118px;height:88px;object-fit:cover;border-radius:var(--radius-img);flex-shrink:0;
}
.rel-card h3{font-size:17.5px;font-weight:600;color:var(--ink);line-height:1.5;}
.rel-card p{margin-top:6px;font-size:14px;color:var(--muted);line-height:1.65;}
.rel-more{
  display:inline-flex;align-items:center;gap:7px;
  margin-top:12px;font-size:13.5px;font-weight:600;color:var(--brand);
}
.rel-more i{transition:var(--tr);}
.rel-card:hover .rel-more i{transform:translateX(3px);}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:rgba(255,255,255,.82);margin-top:0;padding:74px 0 0;}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:44px;
}
.site-footer .logo{color:#fff;}
.site-footer .logo-mark{background:var(--brand);color:#fff;}
.footer-brand p{margin-top:18px;font-size:14.5px;line-height:1.8;color:rgba(255,255,255,.66);max-width:300px;}
.footer-badge{
  display:inline-flex;align-items:center;gap:8px;margin-top:20px;
  padding:7px 14px;border-radius:999px;border:1px solid rgba(200,240,75,.4);
  font-size:12.5px;font-weight:600;color:var(--accent);
}
.footer-col h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:18px;}
.footer-links li{margin-bottom:11px;}
.footer-links a{font-size:14.5px;color:rgba(255,255,255,.72);transition:var(--tr);}
.footer-links a:hover{color:var(--accent);}
.footer-dl{display:flex;flex-direction:column;align-items:flex-start;gap:12px;}
.footer-dl .btn{height:46px;padding:0 22px;font-size:14.5px;}
.footer-dl .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.34);}
.footer-dl .btn-ghost:hover{background:rgba(255,255,255,.1);color:#fff;border-color:rgba(255,255,255,.6);}
.footer-dl small{font-size:12.5px;line-height:1.7;color:rgba(255,255,255,.5);}
.footer-bottom{
  margin-top:56px;padding:22px 0 26px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.52);
}
.to-top{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 16px;border-radius:999px;border:1px solid rgba(255,255,255,.2);
  color:rgba(255,255,255,.8);font-size:13px;transition:var(--tr);
}
.to-top:hover{background:var(--brand);border-color:var(--brand);color:#fff;}

/* ============ 响应式 ============ */
@media (max-width:1100px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:38px;}
}
@media (max-width:900px){
  .grid-container{padding-left:24px;padding-right:24px;}
  .section{padding:76px 0;}
  .section-tight{padding:60px 0;}
  .nav-toggle{display:inline-flex;}
  .main-nav{
    position:absolute;top:calc(100% + 1px);left:0;right:0;
    display:none;flex-direction:column;align-items:stretch;gap:4px;
    background:var(--surface);border-bottom:1px solid var(--line);
    padding:16px 16px 22px;box-shadow:var(--shadow-card);
    margin-left:0;
  }
  .main-nav.open{display:flex;}
  .nav-link{padding:14px 14px;font-size:15px;}
  .nav-link.active::after{display:none;}
  .nav-cta{display:none;}
  .nav-panel-cta{display:inline-flex;margin-top:10px;width:100%;}
  .hero{padding:56px 0 66px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero-figure{order:-1;}
  .hero-figure img{transform:none;border-width:2px;}
  .steps{grid-template-columns:1fr 1fr;gap:18px;}
  .scene-grid{grid-template-columns:1fr;}
  .param-wrap{grid-template-columns:1fr;padding:10px 26px;gap:0;}
  .param-item:nth-last-child(-n+2){border-bottom:1px solid var(--line);}
  .param-item:last-child{border-bottom:0;}
  .rel-grid{grid-template-columns:1fr;}
  .cta-band{padding:46px 32px;}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:28px;}
  .faq-a-inner{padding-right:24px;}
}
@media (max-width:600px){
  .grid-container{padding-left:16px;padding-right:16px;}
  body{font-size:16px;}
  .section{padding:58px 0;}
  .section-tight{padding:48px 0;}
  .section-head{margin-bottom:28px;}
  .logo-text{font-size:14.5px;}
  .hero-actions .btn{width:100%;}
  .fn-row{grid-template-columns:44px 1fr;gap:14px;padding:18px 14px;}
  .fn-arrow{display:none;}
  .fn-num{font-size:14px;}
  .steps{grid-template-columns:1fr;}
  .cta-band{padding:36px 22px;border-radius:16px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .faq-q{font-size:16px;padding:18px 12px 18px 14px;}
  .faq-a-inner{padding:0 16px 22px 14px;}
  .rel-card{flex-direction:column;align-items:flex-start;gap:16px;}
  .rel-card img{width:100%;height:160px;}
  .footer-grid{grid-template-columns:1fr;gap:34px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}