/* roulang page: index */
:root{
  --ink:#0E3B34;
  --ink-deep:#0A2C27;
  --teal:#12B8A6;
  --lime:#D6F35A;
  --bg:#F5F7F2;
  --dark:#071B18;
  --text:#17201E;
  --muted:#5C6B66;
  --line:#DDE5DF;
  --white:#FFFFFF;
  --card-r:18px;
  --btn-r:12px;
  --shadow:0 12px 32px rgba(7,27,24,.08);
  --shadow-lg:0 24px 64px rgba(7,27,24,.18);
  --ease:cubic-bezier(.2,.7,.3,1);
  --max:1240px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:17px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--ink);text-decoration:none;transition:color .2s var(--ease),opacity .2s var(--ease)}
a:hover{color:var(--teal)}
h1,h2,h3,h4{color:var(--ink);font-weight:800;line-height:1.25;letter-spacing:-.02em;margin:0 0 .6em}
h2{font-size:clamp(1.8rem,2.6vw,2.6rem)}
h3{font-size:1.25rem;margin-bottom:.4em}
p{margin:0 0 1em}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:3px solid rgba(18,184,166,.45);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 24px}
.container-wide{max-width:1440px}
.section{padding:104px 0}
.section-tight{padding:76px 0}
.section-dark{background:var(--dark);color:#D9E6E1;position:relative;overflow:hidden}
.section-dark h2,.section-dark h3{color:#fff}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:.8125rem;font-weight:700;letter-spacing:.06em;
  color:var(--ink);background:rgba(18,184,166,.12);
  border:1px solid rgba(18,184,166,.28);
  padding:6px 14px;border-radius:999px;margin-bottom:18px;
}
.section-head{max-width:760px;margin-bottom:52px}
.section-head p{color:var(--muted);font-size:1.0625rem;margin-bottom:0}
.section-dark .section-head p{color:#9DB3AD}
.text-center{text-align:center;margin-left:auto;margin-right:auto}

/* ---------- 顶部小条与导航 ---------- */
.topline{background:var(--ink);color:#BED8D1;font-size:.8125rem}
.topline .container{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:36px}
.topline strong{color:var(--lime);font-weight:700}
.topline a{color:var(--lime)}
.topline a:hover{color:#fff}
.site-header{position:sticky;top:0;z-index:90;background:rgba(245,247,242,.94);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:76px}
.logo{display:flex;align-items:center;gap:11px;font-weight:800;font-size:1.0625rem;color:var(--ink);letter-spacing:-.01em}
.logo-mark{width:40px;height:40px;border-radius:13px;background:linear-gradient(135deg,var(--ink) 10%,var(--teal) 95%);display:grid;place-items:center;color:var(--lime);font-size:1rem;flex:0 0 auto;box-shadow:0 8px 20px rgba(14,59,52,.28)}
.logo small{display:block;font-size:.75rem;font-weight:500;color:var(--muted);letter-spacing:0}
.main-nav>ul{display:flex;align-items:center;gap:2px}
.main-nav>ul>li{position:relative}
.nav-link{display:inline-flex;align-items:center;gap:6px;padding:10px 13px;border-radius:10px;font-size:.9375rem;font-weight:600;color:var(--ink);white-space:nowrap}
.nav-link:hover{background:rgba(18,184,166,.1)}
.nav-link.active{background:var(--ink);color:#F5F7F2}
.nav-link.active:hover{color:#F5F7F2}
.nav-actions{display:flex;align-items:center;gap:10px}
.icon-btn{width:42px;height:42px;border-radius:12px;border:1px solid var(--line);background:#fff;color:var(--ink);display:grid;place-items:center;cursor:pointer;transition:all .2s var(--ease)}
.icon-btn:hover{border-color:var(--teal);color:var(--teal);transform:translateY(-2px)}
.nav-toggle{display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:#fff;color:var(--ink);font-size:1.0625rem;cursor:pointer}

/* ---------- Mega 面板 ---------- */
.has-mega .mega{
  position:absolute;top:calc(100% + 12px);left:50%;transform:translate(-50%,10px);
  width:min(900px,90vw);background:#fff;border:1px solid var(--line);border-radius:20px;
  box-shadow:var(--shadow-lg);padding:24px;
  display:grid;grid-template-columns:1.45fr 1fr 1fr;gap:22px;
  opacity:0;visibility:hidden;transition:opacity .18s var(--ease),transform .18s var(--ease),visibility .18s var(--ease);
  z-index:95;
}
.has-mega:hover .mega,.has-mega:focus-within .mega{opacity:1;visibility:visible;transform:translate(-50%,0)}
.mega h4{font-size:.8125rem;letter-spacing:.08em;color:var(--muted);font-weight:700;margin:0 0 12px}
.mega-cats{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.mega-cat{display:block;padding:12px 13px;border:1px solid var(--line);border-radius:14px;transition:all .2s var(--ease)}
.mega-cat:hover{border-color:var(--teal);background:rgba(18,184,166,.06);transform:translateY(-3px)}
.mega-cat strong{display:block;font-size:.9375rem;color:var(--ink);margin-bottom:2px}
.mega-cat span{font-size:.8125rem;color:var(--muted)}
.mega-list li{margin-bottom:10px}
.mega-list a{font-size:.875rem;color:var(--ink);display:block;line-height:1.5}
.mega-list a:hover{color:var(--teal)}
.mega-side{background:var(--ink);border-radius:16px;padding:18px;color:#CFE4DE}
.mega-side strong{color:#fff;display:block;font-size:1rem;margin-bottom:6px}
.mega-side p{font-size:.8125rem;color:#A9C4BD;margin-bottom:14px;line-height:1.6}
.mega-side .btn{padding:10px 16px;font-size:.875rem;width:100%;justify-content:center}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:14px 26px;border-radius:var(--btn-r);font-size:1rem;font-weight:700;
  border:1px solid transparent;cursor:pointer;font-family:inherit;
  transition:all .2s var(--ease);
}
.btn i{font-size:.875rem}
.btn-primary{background:var(--ink);color:#F5F7F2}
.btn-primary:hover{background:var(--teal);color:#04211D;transform:translateY(-2px);box-shadow:0 14px 30px rgba(18,184,166,.3)}
.btn-ghost{background:transparent;color:var(--ink);border-color:rgba(14,59,52,.35)}
.btn-ghost:hover{background:var(--ink);color:#F5F7F2;border-color:var(--ink);transform:translateY(-2px)}
.btn-lime{background:var(--lime);color:var(--ink)}
.btn-lime:hover{background:#fff;color:var(--ink);transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn-sm{padding:10px 18px;font-size:.875rem}
.link-arrow{display:inline-flex;align-items:center;gap:7px;font-weight:700;font-size:.9375rem;color:var(--teal)}
.link-arrow i{transition:transform .2s var(--ease)}
.link-arrow:hover i{transform:translateX(4px)}

/* ---------- 首屏 ---------- */
.hero{position:relative;overflow:hidden;padding:88px 0 104px;background:var(--bg)}
.hero-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.png');background-size:cover;background-position:center;opacity:.14;pointer-events:none}
.hero-grid-lines{position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(14,59,52,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(14,59,52,.07) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(circle at 25% 20%,#000 5%,transparent 72%);
  mask-image:radial-gradient(circle at 25% 20%,#000 5%,transparent 72%);
}
.hero .container{position:relative;z-index:2}
.hero-grid{display:grid;grid-template-columns:1.06fr .94fr;gap:56px;align-items:center}
.hero h1{font-size:clamp(2.5rem,4vw,4rem);margin-bottom:20px}
.hero h1 em{font-style:normal;color:var(--ink);position:relative;white-space:nowrap}
.hero h1 em::after{content:"";position:absolute;left:0;right:0;bottom:.08em;height:.24em;background:var(--lime);z-index:-1;border-radius:4px}
.hero-lead{font-size:1.1875rem;color:var(--muted);max-width:560px;margin-bottom:30px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px}
.hero-points{display:flex;flex-wrap:wrap;gap:10px}
.chip{display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--line);border-radius:999px;padding:7px 15px;font-size:.875rem;color:var(--ink);font-weight:600}
.chip i{color:var(--teal);font-size:.8125rem}
.hero-visual{position:relative}
.hero-visual img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:24px;box-shadow:0 32px 64px rgba(7,27,24,.2)}
.hero-visual::after{content:"";position:absolute;inset:0;border-radius:24px;background:linear-gradient(180deg,rgba(7,27,24,0) 42%,rgba(7,27,24,.5));pointer-events:none}
.step-card{
  position:absolute;left:-30px;bottom:-30px;width:min(348px,88%);
  background:#fff;border:1px solid var(--line);border-radius:var(--card-r);
  padding:20px 22px;box-shadow:var(--shadow-lg);z-index:3;
}
.step-card h3{font-size:1rem;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.step-card h3 i{color:var(--teal)}
.step-mini{display:flex;gap:12px;padding:9px 0;border-top:1px dashed var(--line)}
.step-mini:first-of-type{border-top:0}
.step-mini b{font-variant-numeric:tabular-nums;color:var(--teal);font-size:.9375rem;flex:0 0 26px}
.step-mini span{font-size:.875rem;color:var(--muted);line-height:1.55}
.step-card .btn{width:100%;margin-top:14px;padding:12px 18px;font-size:.9375rem}

/* ---------- 能力区 ---------- */
.cap-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:24px;margin-bottom:24px}
.card{background:#fff;border:1px solid rgba(14,59,52,.08);border-radius:var(--card-r);box-shadow:var(--shadow);transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease)}
.card:hover{transform:translateY(-4px);border-color:var(--teal);box-shadow:0 20px 44px rgba(7,27,24,.14)}
.cap-large{padding:34px;display:flex;flex-direction:column}
.cap-icon{width:52px;height:52px;border-radius:14px;background:rgba(18,184,166,.12);color:var(--ink);display:grid;place-items:center;font-size:1.25rem;margin-bottom:18px}
.cap-large h3{font-size:1.5rem}
.cap-large p{color:var(--muted);margin-bottom:22px}
.cap-large img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:12px;margin-top:auto}
.cap-side{display:grid;grid-template-rows:1fr 1fr;gap:24px}
.cap-small{padding:26px;display:flex;flex-direction:column}
.cap-small h3{font-size:1.125rem}
.cap-small p{color:var(--muted);font-size:.9375rem;margin-bottom:14px}
.cap-strips{border-top:1px solid var(--line)}
.strip{display:grid;grid-template-columns:64px 1fr auto;gap:20px;align-items:center;padding:22px 8px;border-bottom:1px solid var(--line);transition:background .2s var(--ease),padding-left .2s var(--ease)}
.strip:hover{background:#fff;padding-left:16px}
.strip b{font-size:1.25rem;color:var(--teal);font-variant-numeric:tabular-nums;font-weight:800}
.strip h3{font-size:1.0625rem;margin:0 0 4px}
.strip p{margin:0;color:var(--muted);font-size:.9375rem}

/* ---------- 数据区 ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative;z-index:2}
.stat{border-left:2px solid rgba(214,243,90,.5);padding-left:20px}
.stat b{display:block;font-size:clamp(2rem,3.4vw,2.9rem);color:var(--lime);font-weight:800;font-variant-numeric:tabular-nums;line-height:1.1;letter-spacing:-.03em}
.stat span{display:block;color:#9DB3AD;font-size:.9375rem;margin-top:8px}
.stats-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-3.png');background-size:cover;background-position:center;opacity:.18;pointer-events:none}

/* ---------- 案例区 ---------- */
.cases{display:grid;grid-template-columns:repeat(2,1fr);gap:28px}
.case-card{overflow:hidden;display:flex;flex-direction:column}
.case-card:nth-child(2){margin-top:44px}
.case-card:nth-child(4){margin-top:-44px}
.case-media{position:relative;overflow:hidden;border-radius:var(--card-r) var(--card-r) 0 0}
.case-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .5s var(--ease)}
.case-card:hover .case-media img{transform:scale(1.06)}
.case-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,27,24,0) 45%,rgba(7,27,24,.55))}
.case-body{padding:24px 26px 28px}
.case-body p{color:var(--muted);font-size:.9375rem;margin-bottom:16px}
.tag{display:inline-flex;align-items:center;gap:6px;font-size:.8125rem;font-weight:700;border-radius:999px;padding:5px 12px}
.tag-teal{background:rgba(18,184,166,.13);color:#0B7C70}
.tag-lime{background:rgba(214,243,90,.35);color:#3F5210}
.tag-ink{background:rgba(14,59,52,.09);color:var(--ink)}
.case-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}

/* ---------- 方案区 ---------- */
.plan-row{display:grid;grid-template-columns:250px 1fr auto;gap:32px;align-items:center;padding:34px 0;border-top:1px solid var(--line)}
.plan-row:last-child{border-bottom:1px solid var(--line)}
.plan-label{display:flex;align-items:center;gap:12px;font-weight:800;color:var(--ink);font-size:1.125rem}
.plan-label i{color:var(--teal)}
.plan-body p{margin:0;color:var(--muted)}
.plan-body strong{display:block;color:var(--ink);font-size:1.0625rem;margin-bottom:6px}

/* ---------- 最新信息 ---------- */
.news-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px}
.news-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.news-card{background:#fff;border:1px solid rgba(14,59,52,.08);border-radius:var(--card-r);box-shadow:var(--shadow);padding:26px 28px;transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease)}
.news-card:hover{transform:translateY(-4px);border-color:var(--teal);box-shadow:0 20px 44px rgba(7,27,24,.14)}
.news-top{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:14px}
.news-time{font-size:.8125rem;color:var(--muted);font-variant-numeric:tabular-nums}
.news-card h3{font-size:1.1875rem;margin-bottom:10px}
.news-card h3 a{color:var(--ink)}
.news-card h3 a:hover{color:var(--teal)}
.news-excerpt{color:var(--muted);font-size:.9375rem;margin-bottom:16px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.empty-state{grid-column:1/-1;background:#fff;border:1px dashed var(--line);border-radius:var(--card-r);padding:44px;text-align:center;color:var(--muted)}

/* ---------- FAQ ---------- */
.faq-wrap{display:grid;grid-template-columns:.8fr 1.2fr;gap:48px;align-items:start}
.faq-item{position:relative;background:#fff;border:1px solid var(--line);border-radius:14px;margin-bottom:12px;overflow:hidden;transition:border-color .2s var(--ease),box-shadow .2s var(--ease)}
.faq-item::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--teal);transform:scaleY(0);transform-origin:top;transition:transform .28s var(--ease)}
.faq-item[open]{border-color:rgba(18,184,166,.5);box-shadow:var(--shadow)}
.faq-item[open]::before{transform:scaleY(1)}
.faq-item summary{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:19px 22px;font-weight:700;color:var(--ink);cursor:pointer;list-style:none}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-size:1.25rem;color:var(--teal);font-weight:700;flex:0 0 auto}
.faq-item[open] summary::after{content:"–"}
.faq-body{padding:0 22px 20px;color:var(--muted);line-height:1.85;font-size:.9375rem}

/* ---------- 联系 ---------- */
.contact-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:32px;align-items:start}
.form-card{background:#fff;border:1px solid rgba(14,59,52,.08);border-radius:var(--card-r);box-shadow:var(--shadow);padding:34px}
.field{display:block;margin-bottom:18px}
.field span{display:block;font-size:.875rem;font-weight:700;color:var(--ink);margin-bottom:8px}
.field input,.field select,.field textarea{
  width:100%;padding:13px 15px;border:1px solid var(--line);border-radius:12px;background:#FBFCFA;
  font-family:inherit;font-size:.9375rem;color:var(--text);transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.field textarea{min-height:120px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--teal);background:#fff;box-shadow:0 0 0 3px rgba(18,184,166,.18)}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.checkbox{display:flex;align-items:flex-start;gap:10px;font-size:.875rem;color:var(--muted);margin-bottom:22px}
.checkbox input{width:18px;height:18px;margin-top:2px;accent-color:var(--teal)}
.info-card{background:var(--ink);border-radius:var(--card-r);padding:34px;color:#CFE4DE}
.info-card h3{color:#fff}
.info-card p{color:#A9C4BD;font-size:.9375rem}
.info-list li{display:flex;gap:14px;padding:16px 0;border-bottom:1px solid rgba(255,255,255,.1)}
.info-list li:last-child{border-bottom:0}
.info-list i{color:var(--lime);margin-top:5px}
.info-list strong{display:block;color:#fff;font-size:.9375rem}
.info-list span{font-size:.875rem;color:#A9C4BD}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:#A9C4BD;padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:48px}
.site-footer h4{color:#fff;font-size:.9375rem;font-weight:700;margin-bottom:18px;letter-spacing:.02em}
.site-footer a{color:#A9C4BD;font-size:.9375rem}
.site-footer a:hover{color:var(--teal);text-decoration:underline}
.footer-logo{display:flex;align-items:center;gap:11px;color:#fff;font-weight:800;font-size:1.0625rem;margin-bottom:16px}
.footer-logo .logo-mark{box-shadow:none}
.footer-about{font-size:.9375rem;line-height:1.8;max-width:340px}
.footer-links li{margin-bottom:11px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:22px 0;display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;font-size:.8125rem;color:#7E948F}

/* ---------- 移动端 ---------- */
.drawer{display:none}
.mobile-cta{display:none}
@media screen and (max-width:1023px){
  .section{padding:72px 0}
  .section-tight{padding:56px 0}
  .main-nav{display:none}
  .nav-toggle{display:grid;place-items:center}
  .topline{display:none}
  .has-mega .mega{display:none}
  .hero{padding:56px 0 72px}
  .hero-grid{grid-template-columns:1fr;gap:52px}
  .hero-visual{max-width:620px}
  .step-card{position:static;width:100%;margin-top:20px;box-shadow:var(--shadow)}
  .cap-grid{grid-template-columns:1fr}
  .stats{grid-template-columns:repeat(2,1fr);gap:28px}
  .cases{grid-template-columns:1fr}
  .case-card:nth-child(2),.case-card:nth-child(4){margin-top:0}
  .plan-row{grid-template-columns:1fr;gap:14px;padding:26px 0}
  .faq-wrap{grid-template-columns:1fr;gap:28px}
  .contact-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .drawer{position:fixed;left:0;right:0;top:76px;bottom:0;background:#fff;z-index:85;padding:20px 24px 90px;overflow-y:auto;border-top:1px solid var(--line);box-shadow:var(--shadow-lg)}
  body.nav-open .drawer{display:block}
  .drawer ul li{border-bottom:1px solid var(--line)}
  .drawer ul li a{display:flex;align-items:center;justify-content:space-between;padding:16px 4px;font-weight:600;font-size:1rem;color:var(--ink)}
  .drawer ul li a i{color:var(--teal)}
  .drawer .btn{width:100%;margin-top:20px}
}
@media screen and (max-width:767px){
  body{font-size:16px}
  .container{padding:0 18px}
  .section{padding:56px 0}
  .section-tight{padding:46px 0}
  .hero h1{font-size:clamp(2rem,8vw,2.5rem)}
  .hero-lead{font-size:1.0625rem}
  .hero-actions .btn{width:100%}
  .news-grid{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr;gap:22px}
  .stat{padding-left:16px}
  .cap-large,.cap-small,.news-card,.form-card,.info-card{padding:24px}
  .strip{grid-template-columns:44px 1fr;gap:14px}
  .strip .link-arrow{grid-column:2}
  .field-row{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .mobile-cta{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:80;gap:10px;padding:10px 16px;background:rgba(245,247,242,.97);border-top:1px solid var(--line);backdrop-filter:blur(10px)}
  .mobile-cta .btn{flex:1;padding:12px 10px;font-size:.9375rem}
  body{padding-bottom:74px}
  .drawer{top:76px}
}

/* roulang page: category1 */
:root{
  --brand:#0E3B34;
  --brand-deep:#071B18;
  --brand-soft:rgba(14,59,52,.08);
  --accent:#12B8A6;
  --accent-soft:rgba(18,184,166,.12);
  --lime:#D6F35A;
  --bg:#F5F7F2;
  --surface:#FFFFFF;
  --ink:#17201E;
  --muted:#5C6B66;
  --line:#DDE5DF;
  --warn:#E8873A;
  --radius-lg:22px;
  --radius:18px;
  --radius-sm:12px;
  --shadow-sm:0 6px 18px rgba(7,27,24,.06);
  --shadow:0 12px 32px rgba(7,27,24,.08);
  --shadow-lg:0 24px 64px rgba(7,27,24,.16);
  --ease:cubic-bezier(.22,.61,.36,1);
  --dur:200ms;
  --font:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand);text-decoration:none;transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease),background var(--dur) var(--ease)}
a:hover{color:var(--accent)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.02em;line-height:1.24;color:var(--ink)}
h1{font-size:clamp(2.1rem,4.4vw,3.5rem)}
h2{font-size:clamp(1.7rem,2.6vw,2.4rem)}
h3{font-size:1.25rem}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
:focus-visible{outline:3px solid rgba(18,184,166,.45);outline-offset:2px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--brand);color:#F5F7F2;padding:10px 18px;border-radius:0 0 12px 0;z-index:200}
.skip-link:focus{left:0;color:#F5F7F2}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
.section{padding:104px 0}
.section-tight{padding:76px 0}
.section-head{max-width:720px;margin-bottom:52px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:.8125rem;font-weight:700;letter-spacing:.12em;
  color:var(--accent);text-transform:uppercase;
  background:var(--accent-soft);border-radius:999px;padding:6px 14px;margin-bottom:16px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent)}
.section-head p{color:var(--muted);font-size:1.0625rem;margin-top:14px}
.muted{color:var(--muted)}

/* ====== 顶部信息条 ====== */
.site-header{position:sticky;top:0;z-index:100;background:rgba(245,247,242,.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.topline{background:var(--brand-deep);color:#A9BDB6;font-size:.8125rem}
.topline .container{display:flex;justify-content:space-between;align-items:center;gap:20px;min-height:38px;line-height:1.4}
.topline strong{color:var(--lime);font-weight:700}
.topline span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

/* ====== 导航 ====== */
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:80px}
.logo{display:inline-flex;align-items:center;gap:12px;color:var(--ink);font-weight:800;font-size:1.0625rem;letter-spacing:-.02em}
.logo>span:last-child{display:flex;flex-direction:column;line-height:1.25}
.logo small{font-size:.6875rem;font-weight:500;color:var(--muted);letter-spacing:0;margin-top:2px}
.logo-mark{
  width:40px;height:40px;border-radius:12px;background:var(--brand);color:#F5F7F2;
  display:inline-flex;align-items:center;justify-content:center;font-size:.9375rem;
  transition:background var(--dur) var(--ease),transform var(--dur) var(--ease);flex:0 0 auto;
}
.logo:hover .logo-mark{background:var(--accent);transform:translateY(-2px)}
.logo:hover{color:var(--ink)}
.main-nav>ul{display:flex;align-items:center;gap:4px}
.main-nav li{position:relative}
.nav-link{
  display:inline-flex;align-items:center;gap:6px;padding:10px 15px;border-radius:10px;
  color:var(--ink);font-size:.9375rem;font-weight:600;white-space:nowrap;
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease);
}
.nav-link:hover,.nav-link:focus-visible{background:var(--accent-soft);color:var(--brand)}
.nav-link.active{background:var(--accent-soft);color:var(--brand);box-shadow:inset 0 -2px 0 var(--accent)}
.mega{
  position:absolute;top:calc(100% + 16px);left:-14px;width:min(880px,90vw);
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-lg);padding:26px;display:grid;
  grid-template-columns:1.45fr 1fr .92fr;gap:22px;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease),visibility var(--dur) linear;z-index:80;
}
.has-mega:hover .mega,.has-mega:focus-within .mega{opacity:1;visibility:visible;transform:translateY(0)}
.mega::after{content:"";position:absolute;left:0;right:0;top:-16px;height:16px}
.mega h4{font-size:.75rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin-bottom:14px;font-weight:700}
.mega-cats{display:grid;gap:8px}
.mega-cat{display:block;padding:12px 14px;border-radius:14px;background:var(--bg);border:1px solid transparent;transition:all var(--dur) var(--ease)}
.mega-cat strong{display:block;font-size:.9375rem;color:var(--ink);font-weight:700}
.mega-cat span{font-size:.8125rem;color:var(--muted)}
.mega-cat:hover{background:#fff;border-color:var(--accent);transform:translateY(-2px);box-shadow:var(--shadow-sm);color:inherit}
.mega-list li+li{margin-top:4px}
.mega-list a{display:block;font-size:.875rem;color:var(--muted);padding:8px 0;border-bottom:1px dashed var(--line)}
.mega-list a:hover{color:var(--brand);border-bottom-color:var(--accent)}
.mega-side{
  border-radius:16px;padding:20px;color:#DCE7E3;
  background:linear-gradient(155deg,rgba(7,27,24,.94),rgba(14,59,52,.96)),url(/assets/images/backpic/back-3.png) center/cover no-repeat;
}
.mega-side strong{display:block;color:#fff;font-size:.9375rem;margin-bottom:8px}
.mega-side p{font-size:.8125rem;line-height:1.7;color:#A9BDB6;margin:0 0 14px}
.mega-side .btn{width:100%;padding:10px 16px;font-size:.875rem}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:#fff;color:var(--brand);align-items:center;justify-content:center;cursor:pointer;
  transition:all var(--dur) var(--ease);
}
.nav-toggle:hover{background:var(--accent-soft);border-color:var(--accent)}

/* ====== 按钮 ====== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 26px;border-radius:var(--radius-sm);border:1px solid transparent;
  font-size:.9375rem;font-weight:700;cursor:pointer;line-height:1.4;
  transition:transform var(--dur) var(--ease),background var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.btn i{font-size:.875rem}
.btn-primary{background:var(--brand);color:#F5F7F2;box-shadow:0 12px 26px rgba(14,59,52,.20)}
.btn-primary:hover{background:var(--accent);color:#04231F;transform:translateY(-2px);box-shadow:0 16px 32px rgba(18,184,166,.28)}
.btn-ghost{background:transparent;color:var(--brand);border-color:rgba(14,59,52,.26)}
.btn-ghost:hover{background:var(--brand);color:#F5F7F2;transform:translateY(-2px);border-color:var(--brand)}
.btn-lime{background:var(--lime);color:#10322C}
.btn-lime:hover{background:#E6FF7C;transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn-row{display:flex;flex-wrap:wrap;gap:14px;align-items:center}

/* ====== Hero ====== */
.hero{
  position:relative;overflow:hidden;padding:64px 0 96px;
  background:linear-gradient(180deg,rgba(245,247,242,.95),rgba(245,247,242,.99)),
             url(/assets/images/backpic/back-1.png) center/cover no-repeat;
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(14,59,52,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(14,59,52,.055) 1px,transparent 1px);
  background-size:64px 64px;mask-image:linear-gradient(180deg,#000,transparent 82%);
}
.hero .container{position:relative;z-index:2}
.breadcrumb{display:flex;align-items:center;gap:10px;font-size:.8125rem;color:var(--muted);margin-bottom:30px;flex-wrap:wrap}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb span[aria-current]{color:var(--brand);font-weight:600}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:56px;align-items:center}
.hero h1{margin-bottom:20px}
.hero h1 em{font-style:normal;color:var(--brand);position:relative;white-space:nowrap}
.hero h1 em::after{content:"";position:absolute;left:0;right:0;bottom:.06em;height:.28em;background:rgba(214,243,90,.55);z-index:-1;border-radius:3px}
.hero-sub{font-size:1.125rem;color:var(--muted);max-width:600px;margin-bottom:30px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.tag{
  display:inline-flex;align-items:center;gap:7px;font-size:.8125rem;font-weight:600;
  color:var(--brand);background:#fff;border:1px solid var(--line);border-radius:999px;padding:7px 15px;
}
.tag i{color:var(--accent);font-size:.75rem}
.hero-panel{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-lg);padding:28px;position:relative;overflow:hidden;
}
.hero-panel::after{
  content:"";position:absolute;right:-60px;top:-60px;width:180px;height:180px;border-radius:50%;
  background:radial-gradient(circle,rgba(18,184,166,.18),transparent 70%);
}
.hero-panel-head{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:20px}
.hero-panel-head h2{font-size:1.0625rem;font-weight:700}
.status-list{display:grid;gap:12px;margin-bottom:20px;position:relative;z-index:2}
.status-list li{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:13px 15px;border-radius:14px;background:var(--bg);border:1px solid transparent;transition:all var(--dur) var(--ease)}
.status-list li:hover{border-color:var(--accent);background:#fff;transform:translateX(3px)}
.status-list .label{font-size:.875rem;color:var(--muted)}
.status-list .value{font-size:.875rem;font-weight:700;color:var(--brand);display:inline-flex;align-items:center;gap:7px}
.status-list .value i{color:var(--accent)}
.hero-panel .note{font-size:.8125rem;color:var(--muted);line-height:1.7;margin:0 0 18px}
.hero-panel .btn{width:100%}
.hero-panel .secure{margin-top:16px;font-size:.75rem;color:var(--warn);display:flex;gap:8px;align-items:flex-start}
.hero-panel .secure i{margin-top:4px}

/* ====== 步骤时间线 ====== */
.steps-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:52px;align-items:start}
.timeline{position:relative;padding-left:8px}
.timeline::before{content:"";position:absolute;left:29px;top:14px;bottom:14px;width:2px;background:linear-gradient(180deg,var(--accent),rgba(18,184,166,.08))}
.timeline-item{position:relative;display:grid;grid-template-columns:60px 1fr;gap:24px;padding-bottom:34px}
.timeline-item:last-child{padding-bottom:0}
.step-num{
  width:58px;height:58px;border-radius:18px;background:#fff;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;
  font-size:1.125rem;font-weight:800;color:var(--brand);box-shadow:var(--shadow-sm);
  position:relative;z-index:2;transition:all var(--dur) var(--ease);
}
.timeline-item:hover .step-num{background:var(--brand);color:var(--lime);border-color:var(--brand);transform:translateY(-3px)}
.timeline-body{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow-sm);transition:all var(--dur) var(--ease)}
.timeline-body:hover{transform:translateY(-4px);border-color:var(--accent);box-shadow:var(--shadow)}
.timeline-body h3{margin-bottom:10px}
.timeline-body p{color:var(--muted);font-size:.9375rem;margin-bottom:14px}
.hint{display:flex;gap:9px;font-size:.8125rem;color:var(--brand);background:var(--accent-soft);border-radius:10px;padding:10px 13px;align-items:flex-start;line-height:1.6}
.hint i{margin-top:3px;color:var(--accent)}
.visual-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;
  box-shadow:var(--shadow);position:sticky;top:130px;
}
.visual-card .media{position:relative;aspect-ratio:16/10;overflow:hidden}
.visual-card .media img{width:100%;height:100%;object-fit:cover;transition:transform 500ms var(--ease)}
.visual-card:hover .media img{transform:scale(1.05)}
.visual-card .media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,27,24,0) 40%,rgba(7,27,24,.55))}
.visual-card .badge{
  position:absolute;left:16px;top:16px;z-index:2;background:rgba(7,27,24,.72);color:#fff;
  font-size:.75rem;font-weight:600;padding:6px 13px;border-radius:999px;backdrop-filter:blur(4px);
}
.visual-card .body{padding:24px}
.visual-card .body h3{margin-bottom:8px}
.visual-card .body p{font-size:.875rem;color:var(--muted);margin-bottom:16px}
.mini-tags{display:flex;flex-wrap:wrap;gap:8px}
.mini-tags span{font-size:.75rem;font-weight:600;color:var(--brand);background:var(--bg);border:1px solid var(--line);border-radius:999px;padding:5px 12px}

/* ====== 入口区 ====== */
.entry-band{
  display:grid;grid-template-columns:1.3fr .7fr;gap:40px;align-items:center;
  background:linear-gradient(140deg,rgba(7,27,24,.95),rgba(14,59,52,.94)),url(/assets/images/backpic/back-2.png) center/cover no-repeat;
  border-radius:var(--radius-lg);padding:52px;color:#E8F0EC;box-shadow:var(--shadow-lg);
}
.entry-band h2{color:#fff;margin-bottom:14px}
.entry-band p{color:#A9BDB6;font-size:1rem;max-width:560px}
.entry-band .eyebrow{background:rgba(214,243,90,.16);color:var(--lime)}
.entry-band .eyebrow::before{background:var(--lime)}
.entry-band .btn-ghost{color:#E8F0EC;border-color:rgba(232,240,236,.34)}
.entry-band .btn-ghost:hover{background:#E8F0EC;color:var(--brand-deep);border-color:#E8F0EC}
.entry-notes{display:grid;gap:12px}
.entry-notes li{display:flex;gap:10px;align-items:flex-start;font-size:.875rem;color:#C6D6D1;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.08);border-radius:14px;padding:13px 15px}
.entry-notes i{color:var(--lime);margin-top:4px}

/* ====== 常见情况对照表 ====== */
.quick-table{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff;box-shadow:var(--shadow-sm)}
.quick-head,.quick-row{display:grid;grid-template-columns:.9fr 1.6fr;gap:24px;padding:18px 26px;align-items:center}
.quick-head{background:var(--brand);color:#E8F0EC;font-size:.8125rem;font-weight:700;letter-spacing:.06em}
.quick-row{border-top:1px solid var(--line);transition:background var(--dur) var(--ease)}
.quick-row:hover{background:rgba(18,184,166,.05)}
.quick-row .case{font-weight:700;color:var(--ink);font-size:.9375rem;display:flex;gap:10px;align-items:flex-start}
.quick-row .case i{color:var(--accent);margin-top:5px;font-size:.8125rem}
.quick-row .fix{color:var(--muted);font-size:.9375rem}

/* ====== 兼容区 ====== */
.compat-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:24px;align-items:stretch}
.compat-main{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-sm);display:flex;flex-direction:column;transition:all var(--dur) var(--ease)}
.compat-main:hover{border-color:var(--accent);box-shadow:var(--shadow);transform:translateY(-4px)}
.compat-main .media{aspect-ratio:16/9;overflow:hidden;position:relative}
.compat-main .media img{width:100%;height:100%;object-fit:cover;transition:transform 500ms var(--ease)}
.compat-main:hover .media img{transform:scale(1.04)}
.compat-main .body{padding:28px}
.compat-main .body h3{margin-bottom:10px}
.compat-main .body p{color:var(--muted);font-size:.9375rem}
.compat-side{display:grid;gap:24px}
.compat-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow-sm);transition:all var(--dur) var(--ease)}
.compat-card:hover{border-color:var(--accent);transform:translateY(-4px);box-shadow:var(--shadow)}
.compat-card .icon{
  width:44px;height:44px;border-radius:13px;background:var(--accent-soft);color:var(--brand);
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;font-size:1rem;
}
.compat-card h3{font-size:1.0625rem;margin-bottom:8px}
.compat-card p{font-size:.875rem;color:var(--muted);margin:0}

/* ====== 深色自检区 ====== */
.band-dark{
  position:relative;color:#E8F0EC;padding:96px 0;
  background:linear-gradient(180deg,rgba(7,27,24,.94),rgba(7,27,24,.97)),url(/assets/images/backpic/back-2.png) center/cover no-repeat;
}
.band-dark h2{color:#fff}
.band-dark .section-head p{color:#A9BDB6}
.check-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.check-item{
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.10);border-radius:var(--radius);
  padding:28px 24px;transition:all var(--dur) var(--ease);
}
.check-item:hover{background:rgba(18,184,166,.12);border-color:rgba(18,184,166,.5);transform:translateY(-4px)}
.check-item .num{font-size:clamp(2rem,3vw,2.6rem);font-weight:800;color:var(--lime);letter-spacing:-.03em;line-height:1;display:block;margin-bottom:16px}
.check-item h3{color:#fff;font-size:1.0625rem;margin-bottom:8px}
.check-item p{font-size:.875rem;color:#A9BDB6;margin:0}

/* ====== FAQ ====== */
.faq-grid{display:grid;grid-template-columns:.62fr 1.38fr;gap:52px;align-items:start}
.faq-aside h2{margin-bottom:14px}
.faq-aside p{color:var(--muted);font-size:.9375rem}
.faq-aside .btn{margin-top:22px}
.faq-list{display:grid;gap:12px}
.faq-list details{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);
  padding:0;overflow:hidden;transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.faq-list details:hover{border-color:rgba(18,184,166,.5)}
.faq-list details[open]{border-color:var(--accent);box-shadow:var(--shadow-sm)}
.faq-list summary{
  list-style:none;cursor:pointer;padding:19px 24px 19px 22px;font-weight:700;font-size:1rem;
  display:flex;align-items:center;justify-content:space-between;gap:18px;position:relative;
  transition:color var(--dur) var(--ease);
}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;border-radius:0 3px 3px 0;
  background:transparent;transition:background var(--dur) var(--ease);
}
.faq-list details[open] summary::before{background:var(--accent)}
.faq-list details[open] summary{color:var(--brand)}
.faq-list summary i{color:var(--muted);font-size:.8125rem;transition:transform var(--dur) var(--ease),color var(--dur) var(--ease);flex:0 0 auto}
.faq-list details[open] summary i{transform:rotate(45deg);color:var(--accent)}
.faq-answer{padding:0 24px 22px 22px;color:var(--muted);font-size:.9375rem;line-height:1.85}

/* ====== 分类入口 ====== */
.cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.cat-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);
  transition:all var(--dur) var(--ease);height:100%;
}
.cat-card:hover{transform:translateY(-4px);border-color:var(--accent);box-shadow:var(--shadow);color:inherit}
.cat-card .media{aspect-ratio:16/10;overflow:hidden}
.cat-card .media img{width:100%;height:100%;object-fit:cover;transition:transform 500ms var(--ease)}
.cat-card:hover .media img{transform:scale(1.06)}
.cat-card .body{padding:22px;display:flex;flex-direction:column;gap:8px;flex:1}
.cat-card h3{font-size:1.0625rem}
.cat-card p{font-size:.875rem;color:var(--muted);margin:0;flex:1}
.cat-card .more{font-size:.8125rem;font-weight:700;color:var(--accent);display:inline-flex;align-items:center;gap:7px}

/* ====== 联系 ====== */
.contact-wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:0;border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow);background:#fff}
.contact-form{padding:46px}
.contact-form h2{margin-bottom:10px}
.contact-form>p{color:var(--muted);font-size:.9375rem;margin-bottom:28px}
.field{margin-bottom:18px}
.field label{display:block;font-size:.8125rem;font-weight:700;color:var(--brand);margin-bottom:7px}
.field input,.field select,.field textarea{
  width:100%;padding:13px 15px;border-radius:var(--radius-sm);
  border:1px solid var(--line);background:var(--bg);color:var(--ink);
  transition:border-color var(--dur) var(--ease),background var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.field textarea{min-height:120px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--accent);background:#fff;box-shadow:0 0 0 3px rgba(18,184,166,.16);
}
.field input::placeholder,.field textarea::placeholder{color:#9AA8A3}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.checkbox{display:flex;gap:10px;align-items:flex-start;font-size:.8125rem;color:var(--muted);line-height:1.6}
.checkbox input{width:18px;height:18px;margin-top:3px;accent-color:var(--accent);flex:0 0 auto}
.form-actions{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-top:24px}
.form-tip{font-size:.8125rem;color:var(--accent);opacity:0;transition:opacity var(--dur) var(--ease)}
.form-tip.is-on{opacity:1}
.contact-side{
  padding:46px;color:#E8F0EC;
  background:linear-gradient(150deg,rgba(7,27,24,.95),rgba(14,59,52,.94)),url(/assets/images/backpic/back-3.png) center/cover no-repeat;
}
.contact-side h3{color:#fff;margin-bottom:14px}
.contact-side p{color:#A9BDB6;font-size:.9375rem}
.contact-list{margin:26px 0;display:grid;gap:14px}
.contact-list li{display:flex;gap:12px;align-items:flex-start;font-size:.9375rem;color:#DCE7E3}
.contact-list i{color:var(--lime);margin-top:4px}
.contact-list a{color:#DCE7E3;border-bottom:1px solid rgba(214,243,90,.4)}
.contact-list a:hover{color:var(--lime)}
.contact-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:8px}
.contact-links a{
  font-size:.8125rem;font-weight:600;color:#E8F0EC;background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.14);border-radius:999px;padding:7px 15px;
}
.contact-links a:hover{background:var(--lime);color:#10322C;border-color:var(--lime)}

/* ====== 页脚 ====== */
.site-footer{background:var(--brand-deep);color:#A9BDB6;padding:76px 0 30px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.09)}
.footer-logo{display:flex;align-items:center;gap:11px;color:#fff;font-weight:800;font-size:1.0625rem;margin-bottom:16px}
.footer-logo .logo-mark{background:rgba(214,243,90,.16);color:var(--lime)}
.footer-about{font-size:.875rem;line-height:1.85;color:#93A8A2;max-width:340px}
.site-footer h4{color:#fff;font-size:.9375rem;margin-bottom:18px;font-weight:700}
.footer-links{display:grid;gap:11px}
.footer-links a,.footer-links span{font-size:.875rem;color:#93A8A2}
.footer-links a:hover{color:var(--lime);border-bottom:1px solid var(--lime)}
.footer-bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-top:24px;font-size:.8125rem;color:#7C918B}

/* ====== 响应式 ====== */
@media (max-width:1100px){
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .steps-grid{grid-template-columns:1fr;gap:36px}
  .visual-card{position:static}
  .entry-band{grid-template-columns:1fr;padding:40px}
  .compat-grid{grid-template-columns:1fr}
  .faq-grid{grid-template-columns:1fr;gap:32px}
  .cat-grid{grid-template-columns:repeat(2,1fr)}
  .check-grid{grid-template-columns:repeat(2,1fr)}
  .contact-wrap{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
}
@media (max-width:1024px){
  .nav-toggle{display:inline-flex}
  .main-nav{
    position:fixed;top:0;right:0;height:100vh;width:min(370px,88vw);background:#fff;
    padding:96px 22px 48px;transform:translateX(104%);transition:transform 260ms var(--ease);
    box-shadow:var(--shadow-lg);overflow-y:auto;z-index:90;
  }
  .site-header.nav-open .main-nav{transform:none}
  .site-header.nav-open::after{content:"";position:fixed;inset:0;background:rgba(7,27,24,.42);z-index:85}
  .main-nav>ul{flex-direction:column;align-items:stretch;gap:2px}
  .nav-link{width:100%;justify-content:space-between;padding:14px 12px;font-size:1rem;border-radius:12px}
  .nav-link.active{box-shadow:none}
  .mega{
    position:static;width:100%;opacity:1;visibility:visible;transform:none;display:none;
    box-shadow:none;border:none;background:transparent;padding:6px 0 14px;grid-template-columns:1fr;gap:18px;
  }
  .has-mega.open .mega{display:grid}
  .has-mega:hover .mega{opacity:1;visibility:visible;transform:none}
  .mega-side{background:var(--brand-deep)}
}
@media (max-width:768px){
  .section{padding:72px 0}
  .section-tight{padding:56px 0}
  .hero{padding:44px 0 68px}
  .container{padding:0 18px}
  .section-head{margin-bottom:36px}
  .topline .container{justify-content:flex-start}
  .topline .container span:last-child{display:none}
  .hero-sub{font-size:1rem}
  .hero-panel{padding:22px}
  .timeline-item{grid-template-columns:48px 1fr;gap:16px}
  .step-num{width:46px;height:46px;border-radius:14px;font-size:1rem}
  .timeline::before{left:23px}
  .timeline-body{padding:20px}
  .entry-band{padding:32px 24px}
  .quick-head{display:none}
  .quick-row{grid-template-columns:1fr;gap:8px;padding:18px 20px}
  .quick-row .fix{padding-left:26px}
  .faq-list summary{padding:16px 18px 16px 18px;font-size:.9375rem}
  .faq-answer{padding:0 18px 18px 18px}
  .contact-form,.contact-side{padding:30px 22px}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .site-footer{padding:56px 0 26px}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:560px){
  h1{font-size:1.85rem}
  h2{font-size:1.45rem}
  .cat-grid{grid-template-columns:1fr}
  .check-grid{grid-template-columns:1fr}
  .field-row{grid-template-columns:1fr}
  .btn{width:100%}
  .btn-row{flex-direction:column;align-items:stretch}
  .hero-panel .btn,.contact-links a{width:100%}
  .contact-links a{text-align:center}
  .band-dark{padding:64px 0}
  .entry-band{padding:28px 20px}
}

/* roulang page: article */
:root{
  --ink:#0E3B34;
  --ink-2:#155248;
  --teal:#12B8A6;
  --lime:#D6F35A;
  --mist:#F5F7F2;
  --deep:#071B18;
  --text:#17201E;
  --muted:#5C6B66;
  --line:#DDE5DF;
  --card:#FFFFFF;
  --radius:18px;
  --radius-sm:12px;
  --shadow:0 12px 32px rgba(7,27,24,.08);
  --shadow-lg:0 24px 64px rgba(7,27,24,.16);
  --ease:cubic-bezier(.22,.61,.36,1);
  --container:1240px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--mist);
  color:var(--text);
  font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,sans-serif;
  font-size:16px;
  line-height:1.75;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,h5,h6,p,figure,blockquote{margin:0}
button,input,textarea,select{font:inherit;color:inherit;margin:0}
button{cursor:pointer;background:none;border:0;padding:0}
table{border-collapse:collapse;width:100%}
::selection{background:var(--lime);color:#0A231F}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.row{max-width:var(--container);margin-left:auto;margin-right:auto}
.row .column{padding-left:12px;padding-right:12px}

/* ---------- 顶栏 ---------- */
.topline{background:var(--deep);color:#B9CFC7;font-size:.8125rem}
.topline .container{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:38px;flex-wrap:wrap}
.topline strong{color:var(--lime);font-weight:700}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.95);
  backdrop-filter:saturate(160%) blur(12px);
  border-bottom:1px solid var(--line);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:78px}
.logo{display:flex;align-items:center;gap:12px;flex-shrink:0;color:var(--ink);font-weight:800;font-size:1.0625rem;letter-spacing:-.01em}
.logo-mark{
  width:42px;height:42px;border-radius:13px;background:var(--ink);color:var(--lime);
  display:grid;place-items:center;font-size:1rem;
  box-shadow:0 8px 18px rgba(14,59,52,.24);
  transition:transform .25s var(--ease),background-color .25s var(--ease),color .25s var(--ease);
}
.logo:hover .logo-mark{background:var(--teal);color:#04120F;transform:rotate(-8deg)}
.logo > span{display:block;line-height:1.15}
.logo small{display:block;margin-top:3px;font-size:.6875rem;font-weight:500;color:var(--muted);letter-spacing:.06em}

.main-nav ul{display:flex;align-items:center;gap:2px}
.nav-link{
  display:inline-flex;align-items:center;gap:6px;
  padding:9px 14px;border-radius:10px;
  font-size:.9375rem;font-weight:600;color:#2C3A36;
  transition:background-color .2s var(--ease),color .2s var(--ease),box-shadow .2s var(--ease);
}
.nav-link:hover{background:#EFF4EF;color:var(--ink)}
.nav-link.active{color:var(--ink);background:#E9F1EC;box-shadow:inset 0 -2px 0 var(--teal)}
.nav-link:focus-visible{outline:3px solid rgba(18,184,166,.45);outline-offset:2px}

.has-mega{position:relative}
.mega{
  position:absolute;top:calc(100% + 16px);left:50%;
  width:880px;max-width:calc(100vw - 48px);
  transform:translate(-50%,10px);
  display:grid;grid-template-columns:1.4fr 1fr .9fr;gap:24px;
  padding:26px;background:#fff;border:1px solid var(--line);border-radius:20px;
  box-shadow:0 24px 64px rgba(7,27,24,.16);
  opacity:0;visibility:hidden;pointer-events:none;
  transition:opacity .18s var(--ease),transform .18s var(--ease),visibility .18s var(--ease);
}
.has-mega:hover .mega,.has-mega:focus-within .mega{opacity:1;visibility:visible;pointer-events:auto;transform:translate(-50%,0)}
.mega h4{font-size:.75rem;font-weight:700;letter-spacing:.14em;color:var(--muted);text-transform:uppercase;margin-bottom:14px}
.mega-cats{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.mega-cat{display:block;padding:12px;border-radius:12px;border:1px solid transparent;transition:all .2s var(--ease)}
.mega-cat strong{display:block;font-size:.9375rem;font-weight:700;color:var(--ink)}
.mega-cat span{display:block;font-size:.8125rem;color:var(--muted);margin-top:3px}
.mega-cat:hover{background:#F2F7F3;border-color:rgba(18,184,166,.35);transform:translateY(-2px)}
.mega-list li + li{margin-top:4px}
.mega-list a{display:block;font-size:.875rem;color:#2C3A36;padding:7px 10px;border-radius:9px}
.mega-list a:hover{background:#EFF4EF;color:var(--ink)}
.mega-side{
  position:relative;overflow:hidden;border-radius:14px;padding:18px;
  background:var(--deep) url('/assets/images/backpic/back-3.png') center/cover no-repeat;
  color:#DDEBE5;
}
.mega-side::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,27,24,.82),rgba(7,27,24,.94))}
.mega-side > *{position:relative;z-index:2}
.mega-side strong{display:block;font-size:.9375rem;color:var(--lime);margin-bottom:8px}
.mega-side p{font-size:.8125rem;line-height:1.7;color:#BCD3CB}
.mega-side a{display:inline-flex;margin-top:12px;font-size:.8125rem;font-weight:700;color:#fff;border-bottom:1px solid var(--teal)}

.nav-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.nav-search{
  display:flex;align-items:center;gap:8px;
  padding:8px 12px;border-radius:11px;background:#F1F5F1;border:1px solid transparent;
  transition:border-color .2s var(--ease),background-color .2s var(--ease);
}
.nav-search i{color:var(--muted);font-size:.8125rem}
.nav-search input{border:0;background:transparent;outline:none;width:120px;font-size:.875rem}
.nav-search:focus-within{border-color:var(--teal);background:#fff;box-shadow:0 0 0 3px rgba(18,184,166,.16)}
.nav-toggle{display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);color:var(--ink);align-items:center;justify-content:center;font-size:1.0625rem}
.nav-toggle:hover{background:#EFF4EF}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--radius-sm);
  font-size:.9375rem;font-weight:700;border:1px solid transparent;
  cursor:pointer;white-space:nowrap;
  transition:transform .2s var(--ease),background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-primary{background:var(--ink);color:#F5F7F2}
.btn-primary:hover{background:var(--teal);color:#04120F;transform:translateY(-2px);box-shadow:0 12px 26px rgba(18,184,166,.32)}
.btn-ghost{background:transparent;border-color:rgba(14,59,52,.28);color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:#F5F7F2;border-color:var(--ink);transform:translateY(-2px)}
.btn-lime{background:var(--lime);color:#0A231F}
.btn-lime:hover{background:#E7FF86;transform:translateY(-2px);box-shadow:0 12px 26px rgba(214,243,90,.3)}
.btn-sm{padding:9px 16px;font-size:.875rem}
.btn-block{width:100%}
.btn:focus-visible{outline:3px solid rgba(18,184,166,.5);outline-offset:2px}

/* ---------- 面包屑 ---------- */
.breadcrumb-bar{background:#fff;border-bottom:1px solid var(--line);padding:14px 0}
.breadcrumbs{display:flex;align-items:center;gap:10px;font-size:.8125rem;color:var(--muted);flex-wrap:wrap}
.breadcrumbs a{color:var(--muted)}
.breadcrumbs a:hover{color:var(--teal)}
.breadcrumbs i{font-size:.625rem;color:#A9B7B1}
.breadcrumbs span{color:var(--ink);font-weight:600;max-width:60ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- 文章头部 ---------- */
.article-hero{
  position:relative;overflow:hidden;
  padding:64px 0 56px;
  background:#fff url('/assets/images/backpic/back-1.png') right center/620px no-repeat;
  border-bottom:1px solid var(--line);
}
.article-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,#FFFFFF 0%,#FFFFFF 52%,rgba(255,255,255,.6) 82%,rgba(255,255,255,.2) 100%);pointer-events:none}
.article-hero .container{position:relative;z-index:2}
.article-hero-inner{max-width:840px}
.tag{
  display:inline-flex;align-items:center;gap:7px;
  padding:6px 13px;border-radius:999px;
  font-size:.75rem;font-weight:700;letter-spacing:.04em;
}
.tag-cat{background:rgba(18,184,166,.14);color:#0B7A6F}
.tag-lime{background:var(--lime);color:#0A231F}
.article-hero h1{
  margin:20px 0 16px;
  font-size:clamp(1.75rem,3.4vw,2.85rem);
  font-weight:800;line-height:1.32;letter-spacing:-.02em;color:var(--ink);
}
.article-lead{
  font-size:1.0625rem;line-height:1.85;color:#3C4A46;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.article-meta{display:flex;align-items:center;gap:20px;flex-wrap:wrap;margin-top:24px;font-size:.8125rem;color:var(--muted)}
.article-meta span{display:inline-flex;align-items:center;gap:7px}
.article-meta i{color:var(--teal)}

/* ---------- 主体布局 ---------- */
.article-main{padding:64px 0 88px}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 336px;gap:56px;align-items:start}
.article-body{min-width:0;background:#fff;border:1px solid rgba(14,59,52,.08);border-radius:var(--radius);padding:48px 52px;box-shadow:var(--shadow)}

.prose{max-width:820px;font-size:1.0625rem;color:#26312E}
.prose h2{position:relative;padding-left:18px;margin:2.1em 0 .8em;font-size:1.5rem;font-weight:800;line-height:1.45;letter-spacing:-.02em;color:var(--ink)}
.prose h2::before{content:"";position:absolute;left:0;top:.24em;bottom:.24em;width:4px;border-radius:3px;background:var(--teal)}
.prose h2:first-child{margin-top:0}
.prose h3{margin:1.7em 0 .6em;font-size:1.1875rem;font-weight:700;color:var(--ink);letter-spacing:-.01em}
.prose h4{margin:1.4em 0 .5em;font-size:1.0625rem;font-weight:700;color:var(--ink)}
.prose p{margin:0 0 1.15em;line-height:1.9}
.prose ul,.prose ol{margin:0 0 1.3em;padding-left:1.35em;list-style:disc}
.prose ol{list-style:decimal}
.prose li{margin:.42em 0;line-height:1.85}
.prose li::marker{color:var(--teal)}
.prose a{color:#0B8C80;border-bottom:1px solid rgba(18,184,166,.4);font-weight:600}
.prose a:hover{color:var(--ink);border-color:var(--ink)}
.prose strong{color:var(--ink);font-weight:700}
.prose img{border-radius:var(--radius-sm);margin:1.6em 0;box-shadow:var(--shadow)}
.prose figure{margin:1.6em 0}
.prose figcaption{font-size:.8125rem;color:var(--muted);text-align:center;margin-top:10px}
.prose blockquote{
  margin:1.7em 0;padding:18px 24px;
  border-left:4px solid var(--teal);background:#EFF5F1;
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:#2C3A36;
}
.prose blockquote p:last-child{margin-bottom:0}
.prose table{margin:1.6em 0;font-size:.9375rem;border:1px solid var(--line);border-radius:var(--radius-sm);overflow:hidden}
.prose th{background:#EDF2ED;padding:12px 16px;text-align:left;font-weight:700;color:var(--ink)}
.prose td{padding:12px 16px;border-top:1px solid var(--line)}
.prose hr{border:0;border-top:1px solid var(--line);margin:2.4em 0}
.prose code{background:#EFF5F1;padding:2px 7px;border-radius:6px;font-size:.9em;color:#0B7A6F}

/* ---------- 空态 ---------- */
.empty-state{text-align:center;padding:60px 24px}
.empty-state i{font-size:2.6rem;color:var(--teal);opacity:.7}
.empty-state h2{margin:22px 0 12px;font-size:1.5rem;font-weight:800;color:var(--ink)}
.empty-state p{color:var(--muted);max-width:44ch;margin:0 auto 26px;line-height:1.85}

/* ---------- 侧栏 ---------- */
.article-aside{display:flex;flex-direction:column;gap:20px;position:sticky;top:104px}
.side-card{background:#fff;border:1px solid rgba(14,59,52,.08);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}
.side-card h3{display:flex;align-items:center;gap:9px;font-size:1rem;font-weight:800;color:var(--ink);margin-bottom:16px}
.side-card h3 i{color:var(--teal);font-size:.875rem}
.side-links a{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:11px 13px;border-radius:11px;font-size:.9375rem;color:#2C3A36;
  transition:background-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.side-links a i{font-size:.6875rem;color:#A9B7B1;transition:transform .2s var(--ease),color .2s var(--ease)}
.side-links a:hover{background:#EFF5F1;color:var(--ink);transform:translateX(3px)}
.side-links a:hover i{color:var(--teal);transform:translateX(2px)}
.side-cta{
  position:relative;overflow:hidden;border-radius:var(--radius);padding:26px;
  background:var(--deep) url('/assets/images/backpic/back-2.png') center/cover no-repeat;color:#DCEBE5;
}
.side-cta::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,27,24,.84),rgba(7,27,24,.95))}
.side-cta > *{position:relative;z-index:2}
.side-cta strong{display:block;font-size:1.0625rem;font-weight:800;color:#fff;margin-bottom:8px}
.side-cta p{font-size:.875rem;line-height:1.75;color:#B7CFC7;margin-bottom:18px}
.side-note{font-size:.75rem;color:var(--muted);line-height:1.7;margin-top:14px}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0}
.section-head{max-width:720px;margin-bottom:44px}
.section-head h2{font-size:clamp(1.5rem,2.4vw,2.1rem);font-weight:800;letter-spacing:-.02em;color:var(--ink);line-height:1.35}
.section-head p{margin-top:14px;color:var(--muted);font-size:1rem;line-height:1.85}
.eyebrow{display:inline-flex;align-items:center;gap:9px;font-size:.75rem;font-weight:700;letter-spacing:.16em;color:#0B8C80;margin-bottom:14px}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--teal);border-radius:2px}

/* ---------- 相关推荐 ---------- */
.related-section{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.related-row{display:flex;flex-wrap:wrap;margin:0 -12px}
.related-row .column{float:none;flex:0 0 100%;max-width:100%;padding:0 12px 24px}
.related-card{
  display:flex;flex-direction:column;height:100%;overflow:hidden;
  background:var(--mist);border:1px solid rgba(14,59,52,.08);border-radius:var(--radius);
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.related-card:hover{transform:translateY(-4px);border-color:var(--teal);box-shadow:var(--shadow-lg)}
.related-card .thumb{aspect-ratio:16/10;overflow:hidden;background:#E3EAE4}
.related-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.related-card:hover .thumb img{transform:scale(1.06)}
.related-card .body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1}
.related-card h3{font-size:1.0625rem;font-weight:800;color:var(--ink);line-height:1.5}
.related-card p{font-size:.875rem;color:var(--muted);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.related-card .meta{margin-top:auto;display:flex;align-items:center;gap:14px;font-size:.75rem;color:#8A9994}
.related-empty{
  background:var(--mist);border:1px dashed rgba(14,59,52,.24);border-radius:var(--radius);
  padding:46px 30px;text-align:center;
}
.related-empty i{font-size:2rem;color:var(--teal)}
.related-empty h3{margin:16px 0 10px;font-size:1.25rem;font-weight:800;color:var(--ink)}
.related-empty p{color:var(--muted);margin-bottom:22px}

/* ---------- 分类入口卡 ---------- */
.cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.cat-card{
  display:flex;flex-direction:column;gap:12px;
  padding:26px 24px;border-radius:var(--radius);
  background:#fff;border:1px solid rgba(14,59,52,.08);box-shadow:var(--shadow);
  transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.cat-card:hover{transform:translateY(-4px);border-color:var(--teal);box-shadow:var(--shadow-lg)}
.cat-card .icon{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;background:#EFF5F1;color:var(--ink);font-size:.9375rem}
.cat-card:hover .icon{background:var(--lime);color:#0A231F}
.cat-card h3{font-size:1.0625rem;font-weight:800;color:var(--ink)}
.cat-card p{font-size:.875rem;color:var(--muted);line-height:1.75;flex:1}
.cat-card .more{font-size:.8125rem;font-weight:700;color:#0B8C80;display:inline-flex;align-items:center;gap:7px}
.cat-card .more i{transition:transform .2s var(--ease)}
.cat-card:hover .more i{transform:translateX(4px)}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:56px;align-items:start}
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{border:1px solid var(--line);border-radius:14px;background:#fff;overflow:hidden;transition:border-color .2s var(--ease),box-shadow .2s var(--ease)}
.faq-item[open]{border-color:rgba(18,184,166,.5);box-shadow:var(--shadow)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:18px 22px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:1rem;font-weight:700;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-size:1.25rem;font-weight:400;color:var(--teal);transition:transform .2s var(--ease)}
.faq-item[open] summary::after{content:"–"}
.faq-item .answer{padding:0 22px 20px;font-size:.9375rem;line-height:1.85;color:#41504B;border-left:3px solid transparent}
.faq-item[open] .answer{border-left-color:var(--teal)}
.faq-item:hover{border-color:rgba(18,184,166,.4)}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;color:#DFEDE7;
  background:var(--deep) url('/assets/images/backpic/back-3.png') center/cover no-repeat;
}
.cta-band::after{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(7,27,24,.92),rgba(14,59,52,.82))}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.3fr .7fr;gap:48px;align-items:center;padding:76px 0}
.cta-inner h2{font-size:clamp(1.5rem,2.4vw,2.1rem);font-weight:800;color:#fff;letter-spacing:-.02em;line-height:1.4}
.cta-inner p{margin-top:16px;color:#B7CFC7;line-height:1.85;max-width:60ch}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;justify-content:flex-end}
.cta-points{display:flex;gap:26px;margin-top:28px;flex-wrap:wrap}
.cta-points span{display:inline-flex;align-items:center;gap:9px;font-size:.875rem;color:#CBDDD6}
.cta-points i{color:var(--lime)}

/* ---------- 页脚 ---------- */
.site-footer{background:#04120F;color:#9FB6AE;padding:72px 0 26px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:44px}
.footer-logo{display:flex;align-items:center;gap:12px;color:#fff;font-weight:800;font-size:1.0625rem;margin-bottom:18px}
.footer-logo .logo-mark{background:rgba(214,243,90,.14);color:var(--lime);box-shadow:none}
.footer-about{font-size:.875rem;line-height:1.9;color:#8FA8A0;max-width:38ch}
.site-footer h4{font-size:.8125rem;font-weight:700;letter-spacing:.12em;color:#E4F1EB;margin-bottom:18px}
.footer-links li + li{margin-top:11px}
.footer-links a,.footer-links span{font-size:.875rem;color:#9FB6AE}
.footer-links a:hover{color:var(--teal);border-bottom:1px solid var(--teal)}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:.8125rem;color:#7D918A;
}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1023px){
  .nav-toggle{display:inline-flex}
  .nav-search{display:none}
  .main-nav{
    position:fixed;top:0;right:0;bottom:0;width:min(88vw,370px);
    background:#fff;padding:92px 22px 40px;overflow-y:auto;
    box-shadow:-24px 0 60px rgba(7,27,24,.18);
    transform:translateX(103%);transition:transform .3s var(--ease);z-index:80;
  }
  .main-nav.is-open{transform:translateX(0)}
  .main-nav ul{flex-direction:column;align-items:stretch;gap:4px}
  .nav-link{width:100%;justify-content:space-between;padding:14px;font-size:1rem;border-radius:12px}
  .mega{
    position:static;width:100%;max-width:100%;transform:none;
    display:none;grid-template-columns:1fr;gap:18px;
    box-shadow:none;border-radius:14px;padding:16px;margin-top:8px;background:#F5F9F6;
  }
  .has-mega.is-open .mega{display:grid}
  .has-mega:hover .mega{opacity:1;visibility:visible;pointer-events:auto}
  .mega-cats{grid-template-columns:1fr}
  .article-hero{background-image:none;padding:48px 0 42px}
  .article-hero::after{display:none}
  .article-layout{grid-template-columns:1fr;gap:36px}
  .article-aside{position:static}
  .article-body{padding:34px 28px}
  .cat-grid{grid-template-columns:repeat(2,1fr)}
  .faq-grid{grid-template-columns:1fr;gap:32px}
  .cta-inner{grid-template-columns:1fr;gap:30px;padding:60px 0}
  .cta-actions{justify-content:flex-start}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
}
@media screen and (min-width:768px){
  .related-row .column{flex:0 0 50%;max-width:50%}
}
@media screen and (max-width:767px){
  .container{padding:0 18px}
  .section{padding:56px 0}
  .article-main{padding:40px 0 64px}
  .article-body{padding:26px 20px;border-radius:16px}
  .prose{font-size:1rem}
  .prose h2{font-size:1.28rem}
  .prose h3{font-size:1.0625rem}
  .article-hero h1{font-size:1.6rem}
  .article-lead{font-size:.9375rem}
  .breadcrumbs span{white-space:normal}
  .cat-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .topline .container{justify-content:center;text-align:center}
  .topline span:last-child{display:none}
  .btn{width:100%}
  .nav-actions .btn{width:auto}
  .cta-actions .btn{width:100%}
}
@media screen and (max-width:520px){
  .article-meta{gap:14px}
  .side-card{padding:20px}
  .related-card .body{padding:18px}
}

/* roulang page: category2 */
:root{
  --ink:#0E3B34;
  --ink-deep:#071B18;
  --teal:#12B8A6;
  --lime:#D6F35A;
  --bg:#F5F7F2;
  --surface:#FFFFFF;
  --text:#17201E;
  --muted:#5C6B66;
  --line:#DDE5DF;
  --radius:18px;
  --radius-sm:12px;
  --shadow:0 12px 32px rgba(7,27,24,.08);
  --shadow-lg:0 24px 64px rgba(7,27,24,.16);
  --ease:cubic-bezier(.22,.61,.36,1);
  --container:1240px;
}

*,*::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:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:1rem;
  line-height:1.75;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;border-radius:var(--radius-sm);}
a{color:var(--ink);text-decoration:none;transition:color .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease);}
a:hover{color:var(--teal);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.02em;line-height:1.25;color:var(--ink-deep);}
p{margin:0;}
button,input,textarea,select{font-family:inherit;font-size:inherit;}
strong{font-weight:700;}
:focus-visible{outline:3px solid rgba(18,184,166,.45);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:96px 0;}
.section.tight{padding:72px 0;}
.section-head{max-width:780px;margin-bottom:40px;}
.section-head h2{font-size:clamp(1.8rem,3vw,2.6rem);}
.section-head p{margin-top:14px;color:var(--muted);font-size:1.0625rem;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:.8125rem;font-weight:700;color:var(--teal);letter-spacing:.08em;margin-bottom:12px;}
.dark-section{background:var(--ink-deep);color:#D5E6E1;}
.dark-section h2,.dark-section h3{color:#FFFFFF;}

/* ============ 顶部信息条 ============ */
.topline{background:var(--ink-deep);color:#B9CEC8;font-size:.8125rem;padding:9px 0;}
.topline .container{display:flex;justify-content:space-between;align-items:center;gap:18px;}
.topline strong{color:var(--lime);font-weight:700;}

/* ============ 头部导航 ============ */
.site-header{background:rgba(245,247,242,.96);border-bottom:1px solid var(--line);position:relative;z-index:60;}
.nav-wrap{position:relative;display:flex;align-items:center;justify-content:space-between;gap:24px;padding:14px 0;}
.logo{display:flex;align-items:center;gap:12px;font-weight:800;font-size:1.0625rem;color:var(--ink-deep);letter-spacing:-.02em;flex-shrink:0;}
.logo-mark{display:grid;place-items:center;width:42px;height:42px;border-radius:13px;background:linear-gradient(140deg,#0E3B34,#14665A);color:var(--lime);font-size:1.05rem;flex-shrink:0;}
.logo span small{display:block;font-size:.6875rem;font-weight:500;color:var(--muted);letter-spacing:.06em;line-height:1.4;}
.main-nav>ul{display:flex;align-items:center;gap:4px;}
.nav-link{display:inline-flex;align-items:center;gap:7px;padding:10px 14px;border-radius:10px;font-size:.9375rem;font-weight:600;color:var(--ink);white-space:nowrap;}
.nav-link:hover{background:rgba(18,184,166,.1);color:var(--ink-deep);}
.nav-link.active{background:rgba(18,184,166,.16);color:var(--ink-deep);}
.nav-actions{display:flex;align-items:center;gap:12px;}
.search-box{display:flex;align-items:center;gap:8px;background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:8px 16px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);}
.search-box:focus-within{border-color:var(--teal);box-shadow:0 0 0 3px rgba(18,184,166,.18);}
.search-box i{color:var(--muted);font-size:.8125rem;}
.search-box input{border:0;outline:none;background:transparent;width:132px;font-size:.875rem;color:var(--text);}
.search-box input::placeholder{color:#9AA9A4;}
.nav-toggle{display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:var(--surface);color:var(--ink);font-size:1.1rem;cursor:pointer;transition:border-color .2s var(--ease),color .2s var(--ease);}
.nav-toggle:hover{border-color:var(--teal);color:var(--teal);}

/* Mega 面板 */
.has-mega{position:relative;}
.mega{
  position:absolute;top:calc(100% + 16px);left:-40px;
  width:min(860px,calc(100vw - 60px));
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-lg);padding:26px;
  display:grid;grid-template-columns:1.6fr 1fr .95fr;gap:26px;
  opacity:0;visibility:hidden;transform:translateY(-10px);
  transition:opacity .18s var(--ease),transform .18s var(--ease),visibility .18s var(--ease);
}
.has-mega:hover .mega,.has-mega:focus-within .mega{opacity:1;visibility:visible;transform:translateY(0);}
.mega h4{font-size:.8125rem;font-weight:700;color:var(--muted);letter-spacing:.04em;margin-bottom:6px;}
.mega-cats{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:12px;}
.mega-cat{display:block;padding:12px 14px;border:1px solid var(--line);border-radius:12px;background:#FAFBF8;transition:border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);}
.mega-cat strong{display:block;font-size:.9375rem;color:var(--ink-deep);}
.mega-cat span{font-size:.8125rem;color:var(--muted);}
.mega-cat:hover{border-color:var(--teal);transform:translateY(-2px);box-shadow:var(--shadow);}
.mega-cat.active{border-color:var(--teal);background:rgba(18,184,166,.08);}
.mega-list{margin-top:12px;}
.mega-list li{padding:9px 0;border-bottom:1px dashed var(--line);}
.mega-list li:last-child{border-bottom:0;}
.mega-list a{font-size:.875rem;color:var(--ink);display:block;line-height:1.6;}
.mega-list a:hover{color:var(--teal);}
.mega-side{background:var(--ink-deep);color:#C6DAD4;border-radius:14px;padding:20px;}
.mega-side strong{display:block;color:var(--lime);font-size:.9375rem;}
.mega-side p{font-size:.8125rem;margin-top:8px;color:#9FB8B2;line-height:1.7;}
.mega-side .btn{margin-top:16px;width:100%;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:12px;font-size:.9375rem;font-weight:700;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:background-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.btn:focus-visible{outline:3px solid rgba(18,184,166,.45);outline-offset:2px;}
.btn-primary{background:var(--ink);color:#F5F7F2;}
.btn-primary:hover{background:var(--teal);color:#04211D;transform:translateY(-2px);box-shadow:0 14px 28px rgba(18,184,166,.28);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink);}
.btn-ghost:hover{background:var(--ink);color:#F5F7F2;transform:translateY(-2px);}
.btn-lime{background:var(--lime);color:#12261F;}
.btn-lime:hover{background:#C8EA3F;color:#12261F;transform:translateY(-2px);box-shadow:0 14px 28px rgba(214,243,90,.28);}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.38);color:#E7F1EE;}
.btn-outline-light:hover{background:#FFFFFF;color:var(--ink-deep);border-color:#FFFFFF;}
.btn-sm{padding:9px 16px;font-size:.875rem;border-radius:10px;}

.tag{display:inline-flex;align-items:center;gap:6px;padding:4px 11px;border-radius:999px;font-size:.75rem;font-weight:700;background:rgba(18,184,166,.12);color:#0B7A6E;}
.tag.lime{background:rgba(214,243,90,.45);color:#4A5F13;}
.tag.dark{background:rgba(255,255,255,.12);color:#D5E6E1;}

/* ============ Hero ============ */
.page-hero{position:relative;overflow:hidden;background:var(--ink-deep);color:#E7F1EE;padding:64px 0 76px;}
.page-hero::before{content:"";position:absolute;inset:0;background:url(/assets/images/backpic/back-2.png) center/cover no-repeat;opacity:.3;}
.page-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(115deg,rgba(7,27,24,.95) 10%,rgba(7,27,24,.68) 60%,rgba(7,27,24,.86) 100%);}
.page-hero .container{position:relative;z-index:2;}
.breadcrumb{display:flex;align-items:center;gap:9px;flex-wrap:wrap;font-size:.8125rem;color:#93ADA7;margin-bottom:20px;}
.breadcrumb a{color:#CFE2DD;}
.breadcrumb a:hover{color:var(--lime);}
.breadcrumb i{font-size:.625rem;color:#6E8B84;}
.badge{display:inline-flex;align-items:center;gap:8px;padding:6px 15px;border-radius:999px;background:rgba(214,243,90,.14);border:1px solid rgba(214,243,90,.38);color:var(--lime);font-size:.8125rem;font-weight:600;}
.page-hero h1{font-size:clamp(2rem,4vw,3.2rem);color:#FFFFFF;margin-top:20px;line-height:1.2;}
.page-hero h1 .h1-part{display:block;color:var(--lime);}
.hero-sub{margin-top:18px;font-size:1.0625rem;color:#B9CEC8;max-width:600px;line-height:1.8;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-grid{align-items:center;}

.version-panel{
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.18);
  border-radius:var(--radius);padding:26px;backdrop-filter:blur(8px);
}
.vp-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;}
.vp-label{display:block;font-size:.8125rem;color:#93ADA7;letter-spacing:.06em;}
.vp-version{display:block;font-size:2rem;font-weight:800;color:#FFFFFF;font-variant-numeric:tabular-nums;letter-spacing:-.02em;line-height:1.3;}
.vp-status{display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:999px;background:rgba(18,184,166,.2);color:#7EF0E2;font-size:.75rem;font-weight:700;}
.spec{display:grid;grid-template-columns:auto 1fr;gap:12px 18px;margin:22px 0 0;font-size:.875rem;padding-top:20px;border-top:1px solid rgba(255,255,255,.14);}
.spec dt{color:#93ADA7;}
.spec dd{margin:0;color:#EAF4F1;font-weight:600;font-variant-numeric:tabular-nums;text-align:right;}
.vp-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px;}

/* ============ 通用卡片 ============ */
.card{background:var(--surface);border:1px solid rgba(14,59,52,.08);border-radius:var(--radius);box-shadow:var(--shadow);padding:26px;transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);}
.card:hover{transform:translateY(-4px);border-color:var(--teal);box-shadow:0 20px 44px rgba(7,27,24,.14);}
.card h3{font-size:1.25rem;margin-bottom:10px;}
.card p{color:var(--muted);font-size:.9375rem;}
.link-arrow{display:inline-flex;align-items:center;gap:7px;font-weight:700;font-size:.9375rem;color:var(--ink);margin-top:14px;}
.link-arrow i{transition:transform .2s var(--ease);font-size:.8125rem;}
.link-arrow:hover{color:var(--teal);}
.link-arrow:hover i{transform:translateX(4px);}

/* ============ 下载路径 ============ */
.step-row{
  display:grid;grid-template-columns:auto 1fr;gap:22px;align-items:start;
  padding:24px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius);margin-bottom:16px;
  transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.step-row:hover{transform:translateY(-4px);border-color:var(--teal);box-shadow:var(--shadow);}
.step-num{font-size:1.5rem;font-weight:800;color:var(--teal);font-variant-numeric:tabular-nums;line-height:1.2;min-width:52px;}
.step-row h3{font-size:1.0625rem;margin-bottom:6px;}
.step-row p{color:var(--muted);font-size:.9375rem;}
.media{position:relative;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);border:1px solid rgba(14,59,52,.08);}
.media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0;transition:transform .55s var(--ease);}
.media:hover img{transform:scale(1.05);}
.media .cap{position:absolute;left:0;right:0;bottom:0;padding:22px 24px;background:linear-gradient(rgba(7,27,24,0),rgba(7,27,24,.9));color:#EAF4F1;font-size:.9375rem;line-height:1.6;}

/* ============ 时间线 ============ */
.timeline{position:relative;margin-top:34px;padding-left:30px;}
.timeline::before{content:"";position:absolute;left:7px;top:8px;bottom:8px;width:2px;background:linear-gradient(var(--teal),rgba(18,184,166,.08));}
.timeline li{position:relative;padding-bottom:32px;}
.timeline li:last-child{padding-bottom:0;}
.tl-dot{position:absolute;left:-30px;top:6px;width:16px;height:16px;border-radius:50%;background:var(--surface);border:3px solid var(--teal);}
.tl-head{display:flex;flex-wrap:wrap;align-items:center;gap:12px;}
.tl-head strong{font-size:1.125rem;color:var(--ink-deep);font-variant-numeric:tabular-nums;}
.tl-head time{font-size:.8125rem;color:var(--muted);font-variant-numeric:tabular-nums;}
.timeline p{margin-top:10px;color:var(--muted);font-size:.9375rem;line-height:1.85;max-width:780px;}

/* ============ 安全校验 ============ */
.check-list li{display:flex;gap:14px;padding:18px 0;border-bottom:1px dashed var(--line);}
.check-list li:last-child{border-bottom:0;}
.check-list i{color:var(--teal);margin-top:6px;font-size:.9375rem;flex-shrink:0;}
.check-list strong{display:block;font-size:1rem;color:var(--ink-deep);}
.check-list span{display:block;font-size:.875rem;color:var(--muted);margin-top:4px;}
.dark-card{background:var(--ink-deep);color:#C6DAD4;border-radius:var(--radius);padding:30px;position:relative;overflow:hidden;}
.dark-card::before{content:"";position:absolute;inset:0;background:url(/assets/images/backpic/back-3.png) center/cover no-repeat;opacity:.16;}
.dark-card>*{position:relative;z-index:2;}
.dark-card h3{color:#FFFFFF;font-size:1.25rem;}
.risk-list{margin-top:18px;}
.risk-list li{display:flex;gap:12px;padding:12px 0;border-bottom:1px solid rgba(255,255,255,.1);font-size:.9375rem;color:#C6DAD4;}
.risk-list li:last-child{border-bottom:0;}
.risk-list i{color:var(--lime);margin-top:6px;font-size:.8125rem;flex-shrink:0;}
.dark-card .note{margin-top:20px;padding:16px;border-radius:12px;background:rgba(18,184,166,.14);border:1px solid rgba(18,184,166,.32);font-size:.875rem;color:#BDEDE5;line-height:1.8;}

/* ============ 问题速查 ============ */
.q-row{
  display:grid;grid-template-columns:1fr 1.2fr;gap:26px;align-items:start;
  padding:24px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius);margin-bottom:14px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease);
}
.q-row:hover{border-color:var(--teal);box-shadow:var(--shadow);transform:translateY(-3px);}
.q-row h3{font-size:1rem;display:flex;gap:10px;align-items:flex-start;}
.q-row h3 i{color:var(--teal);margin-top:5px;font-size:.875rem;}
.q-row p{font-size:.9375rem;color:var(--muted);line-height:1.8;}

/* ============ FAQ ============ */
.faq-layout{display:grid;grid-template-columns:.85fr 1.6fr;gap:52px;align-items:start;}
.faq details{background:var(--surface);border:1px solid var(--line);border-left:3px solid transparent;border-radius:14px;padding:0 22px;margin-bottom:12px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);}
.faq details[open]{border-color:var(--line);border-left-color:var(--teal);box-shadow:var(--shadow);}
.faq summary{cursor:pointer;list-style:none;padding:19px 0;font-weight:700;color:var(--ink-deep);display:flex;justify-content:space-between;align-items:center;gap:16px;font-size:1rem;}
.faq summary::-webkit-details-marker{display:none;}
.faq summary::after{content:"+";font-size:1.25rem;color:var(--teal);font-weight:700;line-height:1;flex-shrink:0;}
.faq details[open] summary::after{content:"–";}
.faq .ans{padding:0 0 20px;color:var(--muted);font-size:.9375rem;line-height:1.85;}
.faq-aside{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow);}
.faq-aside h3{font-size:1.125rem;margin-bottom:12px;}
.faq-aside p{font-size:.9375rem;color:var(--muted);}
.faq-aside ul{margin-top:18px;}
.faq-aside li{padding:10px 0;border-bottom:1px dashed var(--line);}
.faq-aside li:last-child{border-bottom:0;}
.faq-aside a{font-size:.9375rem;font-weight:600;display:flex;align-items:center;gap:8px;}
.faq-aside a i{color:var(--teal);font-size:.8125rem;}

/* ============ CTA ============ */
.cta-band{position:relative;overflow:hidden;background:var(--ink-deep);border-radius:24px;padding:52px;color:#D5E6E1;}
.cta-band::before{content:"";position:absolute;inset:0;background:url(/assets/images/backpic/back-1.png) center/cover no-repeat;opacity:.2;}
.cta-band::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(7,27,24,.94),rgba(7,27,24,.66));}
.cta-band .inner{position:relative;z-index:2;display:grid;grid-template-columns:1.5fr auto;gap:34px;align-items:center;}
.cta-band h2{color:#FFFFFF;font-size:clamp(1.6rem,2.6vw,2.2rem);}
.cta-band p{margin-top:14px;color:#B9CEC8;font-size:1rem;max-width:620px;line-height:1.8;}
.cta-actions{display:flex;flex-direction:column;gap:12px;}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-deep);color:#B9CEC8;padding:68px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:40px;}
.footer-logo{display:flex;align-items:center;gap:12px;color:#FFFFFF;font-weight:800;font-size:1.0625rem;letter-spacing:-.02em;}
.footer-logo .logo-mark{background:rgba(214,243,90,.16);color:var(--lime);}
.footer-about{margin-top:18px;font-size:.875rem;line-height:1.9;color:#93ADA7;max-width:360px;}
.site-footer h4{color:#FFFFFF;font-size:.9375rem;margin-bottom:18px;font-weight:700;}
.footer-links li{margin-bottom:11px;}
.footer-links a,.footer-links span{color:#B9CEC8;font-size:.875rem;line-height:1.6;}
.footer-links a{border-bottom:1px solid transparent;padding-bottom:2px;}
.footer-links a:hover{color:var(--teal);border-bottom-color:var(--teal);}
.footer-bottom{margin-top:52px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);display:flex;justify-content:space-between;flex-wrap:wrap;gap:14px;font-size:.8125rem;color:#7F9791;}

/* ============ 移动端固定 CTA ============ */
.mobile-cta{display:none;}

/* ============ 响应式 ============ */
@media (max-width:1180px){
  .search-box input{width:104px;}
  .nav-link{padding:10px 11px;font-size:.90625rem;}
}
@media (max-width:1023px){
  .section{padding:72px 0;}
  .section.tight{padding:60px 0;}
  .nav-toggle{display:grid;place-items:center;}
  .main-nav{
    display:none;position:absolute;top:100%;left:0;right:0;
    background:var(--surface);border-bottom:1px solid var(--line);
    box-shadow:var(--shadow-lg);padding:14px 24px 24px;border-radius:0 0 18px 18px;
  }
  .main-nav.open{display:block;}
  .main-nav>ul{flex-direction:column;align-items:stretch;gap:2px;}
  .nav-link{justify-content:space-between;padding:13px 12px;font-size:.9375rem;}
  .mega{
    position:static;width:auto;opacity:1;visibility:visible;transform:none;
    display:none;box-shadow:none;border:0;border-top:1px solid var(--line);
    border-radius:0;padding:16px 0 4px;grid-template-columns:1fr;gap:18px;background:transparent;
  }
  .has-mega.open .mega{display:grid;}
  .mega-cats{grid-template-columns:1fr;}
  .search-box{display:none;}
  .cta-band{padding:40px 28px;}
  .cta-band .inner{grid-template-columns:1fr;}
  .cta-actions{flex-direction:row;flex-wrap:wrap;}
  .faq-layout{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
  .q-row{grid-template-columns:1fr;gap:14px;}
}
@media (max-width:767px){
  .container{padding:0 18px;}
  .section{padding:56px 0;}
  .section.tight{padding:48px 0;}
  .topline .container span:last-child{display:none;}
  .page-hero{padding:44px 0 56px;}
  .page-hero h1{font-size:clamp(1.75rem,7vw,2.2rem);}
  .hero-sub{font-size:1rem;}
  .hero-actions .btn{flex:1 1 auto;}
  .vp-actions .btn{flex:1 1 100%;}
  .spec{grid-template-columns:1fr;gap:6px 0;}
  .spec dd{text-align:left;padding-bottom:8px;border-bottom:1px dashed rgba(255,255,255,.12);}
  .spec dd:last-child{border-bottom:0;}
  .step-row{grid-template-columns:1fr;gap:12px;padding:20px;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .footer-bottom{flex-direction:column;}
  .timeline{padding-left:24px;}
  .tl-dot{left:-24px;width:14px;height:14px;}
  .cta-band{padding:34px 22px;border-radius:20px;}
  .mobile-cta{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:80;
    background:var(--ink-deep);padding:10px 14px;gap:10px;
    box-shadow:0 -10px 30px rgba(7,27,24,.3);
  }
  .mobile-cta .btn{flex:1;padding:11px 14px;font-size:.875rem;}
  body{padding-bottom:74px;}
}
@media (max-width:520px){
  .logo{font-size:.9375rem;}
  .logo span small{font-size:.625rem;}
  .card{padding:20px;}
  .step-num{font-size:1.25rem;}
  .vp-version{font-size:1.75rem;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
}

/* roulang page: category3 */
:root{
  --ink:#17201E;
  --ink-2:#5C6B66;
  --line:#DDE5DF;
  --green:#0E3B34;
  --cyan:#12B8A6;
  --lime:#D6F35A;
  --bg:#F5F7F2;
  --dark:#071B18;
  --card:#FFFFFF;
  --r-lg:18px;
  --r-md:12px;
  --r-sm:8px;
  --sh:0 12px 32px rgba(7,27,24,.08);
  --sh-lg:0 24px 64px rgba(7,27,24,.18);
  --max:1240px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Noto Sans SC",Helvetica,Arial,sans-serif;
  font-size:1rem;
  line-height:1.75;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--green);text-decoration:none;transition:color .2s var(--ease),border-color .2s var(--ease);}
a:hover{color:var(--cyan);}
ul{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;line-height:1.22;letter-spacing:-.02em;font-weight:800;}
p{margin:0;}
button{font-family:inherit;}
:focus-visible{outline:3px solid rgba(18,184,166,.45);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 24px;}
.sec{padding:104px 0;}
.sec--tight{padding:80px 0;}
.sec--dark{background:var(--dark);color:#EAF3EF;}
.sec--dark .sec-head p,.sec--dark .sec-head .eyebrow{color:rgba(234,243,239,.7);}
.sec-head{max-width:720px;margin-bottom:48px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:.8125rem;font-weight:700;letter-spacing:.08em;
  color:var(--cyan);text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--lime);display:inline-block;}
.sec-title{font-size:clamp(1.8rem,2.6vw,2.6rem);font-weight:800;}
.sec-desc{margin-top:14px;color:var(--ink-2);font-size:1.0625rem;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:14px 26px;border-radius:var(--r-md);border:1px solid transparent;
  font-size:.9375rem;font-weight:700;cursor:pointer;
  transition:transform .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-primary{background:var(--green);color:#F5F7F2;}
.btn-primary:hover,.btn-primary:focus{background:var(--cyan);color:#04211D;transform:translateY(-2px);box-shadow:0 14px 28px rgba(18,184,166,.28);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--green);border-color:rgba(14,59,52,.28);}
.btn-ghost:hover,.btn-ghost:focus{background:var(--green);color:#F5F7F2;border-color:var(--green);transform:translateY(-2px);}
.btn-lime{background:var(--lime);color:#0B2B25;}
.btn-lime:hover,.btn-lime:focus{background:#E4FA84;transform:translateY(-2px);}
.btn-sm{padding:10px 18px;font-size:.875rem;}
.btn-block{width:100%;}

.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  background:rgba(18,184,166,.1);color:#0B5C52;
  font-size:.75rem;font-weight:700;letter-spacing:.02em;
}
.tag--lime{background:rgba(214,243,90,.35);color:#41510B;}
.tag--line{background:transparent;border:1px solid var(--line);color:var(--ink-2);}

/* ============ 顶部信息条 ============ */
.topline{background:var(--green);color:rgba(245,247,242,.86);font-size:.8125rem;}
.topline .container{display:flex;justify-content:space-between;align-items:center;gap:16px;padding-top:9px;padding-bottom:9px;}
.topline strong{color:var(--lime);font-weight:700;}

/* ============ header / nav ============ */
.site-header{position:sticky;top:0;z-index:60;background:rgba(245,247,242,.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:14px 0;}
.logo{display:flex;align-items:center;gap:12px;color:var(--green);font-weight:800;font-size:1.0625rem;letter-spacing:-.02em;}
.logo:hover{color:var(--green);}
.logo-mark{
  width:38px;height:38px;border-radius:11px;flex:0 0 38px;
  background:var(--green);color:var(--lime);
  display:flex;align-items:center;justify-content:center;font-size:1rem;
}
.logo small{display:block;font-size:.6875rem;font-weight:500;color:var(--ink-2);letter-spacing:.04em;}
.main-nav>ul{display:flex;align-items:center;gap:6px;}
.main-nav>ul>li{position:relative;}
.nav-link{
  display:inline-flex;align-items:center;gap:6px;
  padding:10px 14px;border-radius:10px;color:var(--ink);font-size:.9375rem;font-weight:600;
}
.nav-link:hover{background:rgba(14,59,52,.06);color:var(--green);}
.nav-link.active{color:var(--green);background:rgba(18,184,166,.12);}
.nav-actions{display:flex;align-items:center;gap:12px;}
.nav-search{
  display:flex;align-items:center;gap:8px;padding:9px 14px;border-radius:999px;
  border:1px solid var(--line);background:#fff;color:var(--ink-2);font-size:.875rem;
}
.nav-search input{border:0;background:transparent;outline:none;width:104px;font-size:.875rem;color:var(--ink);}
.nav-search:focus-within{border-color:var(--cyan);box-shadow:0 0 0 3px rgba(18,184,166,.16);}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:#fff;color:var(--green);font-size:1.0625rem;cursor:pointer;
}
.nav-toggle:hover{border-color:var(--cyan);color:var(--cyan);}

/* Mega Menu */
.has-mega .mega{
  position:absolute;top:calc(100% + 12px);left:-16px;
  width:min(880px,88vw);padding:26px;
  display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:26px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh-lg);
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .18s var(--ease),transform .18s var(--ease),visibility .18s;
}
.has-mega:hover .mega,.has-mega:focus-within .mega{opacity:1;visibility:visible;transform:translateY(0);}
.mega h4{font-size:.75rem;letter-spacing:.1em;color:var(--ink-2);text-transform:uppercase;margin-bottom:14px;font-weight:700;}
.mega-cats{display:grid;grid-template-columns:1fr 1fr;gap:10px;}
.mega-cat{
  display:block;padding:12px 14px;border-radius:var(--r-md);
  border:1px solid var(--line);background:#FBFCFA;
}
.mega-cat strong{display:block;font-size:.9375rem;color:var(--green);font-weight:700;}
.mega-cat span{display:block;font-size:.75rem;color:var(--ink-2);margin-top:4px;}
.mega-cat:hover{border-color:var(--cyan);background:#fff;transform:translateY(-2px);box-shadow:var(--sh);}
.mega-cat.current{border-color:var(--cyan);background:rgba(18,184,166,.08);}
.mega-list li{border-bottom:1px dashed var(--line);}
.mega-list li:last-child{border-bottom:0;}
.mega-list a{display:block;padding:10px 0;font-size:.875rem;color:var(--ink);}
.mega-list a:hover{color:var(--cyan);}
.mega-side{background:var(--dark);border-radius:var(--r-md);padding:18px;color:#EAF3EF;}
.mega-side strong{display:block;color:var(--lime);font-size:.9375rem;margin-bottom:8px;}
.mega-side p{font-size:.8125rem;color:rgba(234,243,239,.78);line-height:1.7;}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;
  background-image:linear-gradient(180deg,rgba(245,247,242,.93),rgba(245,247,242,.99)),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(14,59,52,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(14,59,52,.045) 1px,transparent 1px);
  background-size:64px 64px;mask-image:linear-gradient(180deg,rgba(0,0,0,.7),transparent 88%);
}
.hero .container{position:relative;z-index:2;padding-top:84px;padding-bottom:92px;}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;}
.hero h1{font-size:clamp(2.1rem,4vw,3.4rem);font-weight:800;}
.hero h1 em{font-style:normal;color:var(--cyan);}
.hero-sub{margin-top:20px;font-size:1.0625rem;color:var(--ink-2);max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:22px;margin-top:34px;padding-top:22px;border-top:1px solid var(--line);}
.hero-meta div{font-size:.8125rem;color:var(--ink-2);}
.hero-meta strong{display:block;font-size:1.375rem;color:var(--green);font-weight:800;}
.hero-visual{position:relative;}
.hero-shot{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid rgba(14,59,52,.1);box-shadow:var(--sh-lg);
}
.hero-shot img{width:100%;aspect-ratio:16/11;object-fit:cover;}
.hero-shot::after{content:"";position:absolute;inset:0;background:linear-gradient(190deg,rgba(7,27,24,.05),rgba(7,27,24,.45));}
.hero-panel{
  position:absolute;left:-18px;bottom:-26px;width:min(300px,84%);
  background:#fff;border-radius:var(--r-lg);padding:20px;
  border:1px solid var(--line);box-shadow:var(--sh-lg);
}
.hero-panel h3{font-size:.9375rem;margin-bottom:14px;color:var(--green);}
.hero-panel li{display:flex;align-items:center;gap:10px;font-size:.8125rem;color:var(--ink-2);padding:7px 0;border-bottom:1px dashed var(--line);}
.hero-panel li:last-child{border-bottom:0;}
.hero-panel i{color:var(--cyan);font-size:.75rem;}
.state-pill{
  position:absolute;right:18px;top:18px;z-index:3;
  background:rgba(7,27,24,.72);color:var(--lime);
  padding:7px 14px;border-radius:999px;font-size:.75rem;font-weight:700;
  display:inline-flex;align-items:center;gap:8px;backdrop-filter:blur(6px);
}
.state-pill i{width:7px;height:7px;border-radius:50%;background:var(--lime);display:inline-block;}

/* ============ 安全清单 ============ */
.safety-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:32px;align-items:start;}
.panel{
  background:var(--card);border:1px solid rgba(14,59,52,.08);
  border-radius:var(--r-lg);box-shadow:var(--sh);padding:32px;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.panel:hover{transform:translateY(-4px);border-color:var(--cyan);box-shadow:0 18px 44px rgba(7,27,24,.12);}
.panel h3{font-size:1.25rem;margin-bottom:6px;}
.panel .panel-note{font-size:.875rem;color:var(--ink-2);margin-bottom:22px;}
.check-list li{display:flex;gap:16px;padding:18px 0;border-bottom:1px solid var(--line);}
.check-list li:last-child{border-bottom:0;padding-bottom:0;}
.check-mark{
  flex:0 0 34px;width:34px;height:34px;border-radius:10px;
  background:rgba(18,184,166,.12);color:#0B5C52;
  display:flex;align-items:center;justify-content:center;font-size:.875rem;
}
.check-body strong{display:block;font-size:1rem;color:var(--ink);margin-bottom:4px;}
.check-body span{font-size:.875rem;color:var(--ink-2);}
.risk-card{
  background:var(--dark);color:#EAF3EF;border-radius:var(--r-lg);padding:30px;
  position:relative;overflow:hidden;border:1px solid rgba(214,243,90,.16);
}
.risk-card::before{
  content:"";position:absolute;right:-60px;top:-60px;width:200px;height:200px;border-radius:50%;
  background:radial-gradient(circle,rgba(214,243,90,.22),transparent 68%);
}
.risk-card h3{color:var(--lime);font-size:1.125rem;margin-bottom:8px;}
.risk-card>p{font-size:.875rem;color:rgba(234,243,239,.76);margin-bottom:20px;}
.risk-list li{display:flex;gap:12px;padding:13px 0;border-top:1px solid rgba(234,243,239,.14);font-size:.875rem;color:rgba(234,243,239,.86);}
.risk-list i{color:#FFB36B;margin-top:5px;font-size:.8125rem;}
.risk-card .risk-cta{margin-top:22px;}

/* ============ 验证步骤 ============ */
.steps{counter-reset:step;}
.step{
  display:grid;grid-template-columns:88px 1fr auto;gap:26px;align-items:center;
  padding:26px 28px;background:#fff;border:1px solid rgba(14,59,52,.08);
  border-radius:var(--r-lg);box-shadow:var(--sh);margin-bottom:18px;
  transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.step:hover{transform:translateY(-4px);border-color:var(--cyan);box-shadow:0 18px 44px rgba(7,27,24,.12);}
.step-num{
  font-size:1.75rem;font-weight:800;color:var(--green);letter-spacing:-.03em;
  border-right:1px solid var(--line);padding-right:20px;
}
.step h3{font-size:1.0625rem;margin-bottom:6px;}
.step p{font-size:.875rem;color:var(--ink-2);}
.step .step-tag{white-space:nowrap;}

/* ============ 环境对照 ============ */
.env-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;}
.env-card{
  display:flex;gap:20px;padding:26px;background:#fff;border-radius:var(--r-lg);
  border:1px solid rgba(14,59,52,.08);box-shadow:var(--sh);
  transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.env-card:hover{transform:translateY(-4px);border-color:var(--cyan);box-shadow:0 18px 44px rgba(7,27,24,.12);}
.env-icon{
  flex:0 0 46px;width:46px;height:46px;border-radius:14px;
  background:rgba(14,59,52,.06);color:var(--green);
  display:flex;align-items:center;justify-content:center;font-size:1.0625rem;
}
.env-card h3{font-size:1.0625rem;margin-bottom:6px;}
.env-card p{font-size:.875rem;color:var(--ink-2);}

/* ============ FAQ ============ */
.faq-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:48px;align-items:start;}
.faq-aside h2{font-size:clamp(1.8rem,2.6vw,2.4rem);}
.faq-aside p{margin-top:16px;color:var(--ink-2);font-size:.9375rem;}
.faq-aside .faq-tip{
  margin-top:26px;padding:20px;border-radius:var(--r-md);
  background:rgba(18,184,166,.1);border-left:3px solid var(--cyan);
  font-size:.875rem;color:#0B5C52;
}
.faq-item{
  border:1px solid var(--line);border-radius:var(--r-md);background:#fff;
  margin-bottom:12px;overflow:hidden;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.faq-item[open]{border-color:var(--cyan);box-shadow:var(--sh);}
.faq-item summary{
  cursor:pointer;list-style:none;padding:20px 24px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-weight:700;font-size:1rem;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"\f067";font-family:"Font Awesome 6 Free";font-weight:900;
  font-size:.75rem;color:var(--cyan);transition:transform .2s var(--ease);
}
.faq-item[open] summary::after{content:"\f068";}
.faq-item summary:hover{color:var(--green);}
.faq-item .faq-body{
  padding:0 24px 22px 27px;border-left:3px solid var(--cyan);
  font-size:.9375rem;line-height:1.85;color:var(--ink-2);
}

/* ============ CTA ============ */
.cta-band{
  position:relative;overflow:hidden;border-radius:24px;color:#EAF3EF;
  background-image:linear-gradient(120deg,rgba(7,27,24,.92),rgba(14,59,52,.86)),url('/assets/images/backpic/back-3.png');
  background-size:cover;background-position:center;
  padding:56px;
  display:grid;grid-template-columns:1.3fr .7fr;gap:40px;align-items:center;
}
.cta-band h2{font-size:clamp(1.6rem,2.6vw,2.2rem);color:#fff;}
.cta-band p{margin-top:14px;color:rgba(234,243,239,.8);max-width:560px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}
.cta-foot{margin-top:18px;font-size:.8125rem;color:rgba(234,243,239,.62);}

/* ============ 页脚 ============ */
.site-footer{background:var(--dark);color:rgba(234,243,239,.72);padding:72px 0 28px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;}
.footer-logo{display:flex;align-items:center;gap:12px;color:#fff;font-weight:800;font-size:1.0625rem;margin-bottom:16px;}
.footer-about{font-size:.875rem;line-height:1.8;color:rgba(234,243,239,.66);max-width:340px;}
.site-footer h4{color:#fff;font-size:.9375rem;margin-bottom:16px;}
.footer-links li{margin-bottom:10px;}
.footer-links a,.footer-links span{font-size:.875rem;color:rgba(234,243,239,.7);}
.footer-links a:hover{color:var(--cyan);text-decoration:underline;text-underline-offset:4px;}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(234,243,239,.14);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:.8125rem;color:rgba(234,243,239,.55);
}

/* ============ 响应式 ============ */
@media (max-width:1080px){
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;}
  .main-nav{
    position:absolute;left:0;right:0;top:100%;background:#fff;
    border-bottom:1px solid var(--line);box-shadow:var(--sh-lg);
    max-height:0;overflow:hidden;transition:max-height .28s var(--ease);
  }
  .main-nav.open{max-height:80vh;overflow-y:auto;}
  .main-nav>ul{display:block;padding:14px 24px 22px;}
  .main-nav>ul>li{width:100%;}
  .nav-link{width:100%;justify-content:space-between;padding:14px 6px;border-bottom:1px solid var(--line);border-radius:0;}
  .has-mega .mega{
    position:static;width:auto;opacity:1;visibility:visible;transform:none;
    box-shadow:none;border:0;padding:6px 0 14px;grid-template-columns:1fr;gap:18px;background:transparent;
  }
  .nav-search{display:none;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero-panel{position:static;width:100%;margin-top:20px;}
  .safety-grid{grid-template-columns:1fr;}
  .faq-grid{grid-template-columns:1fr;gap:28px;}
  .cta-band{grid-template-columns:1fr;padding:40px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:768px){
  .sec{padding:72px 0;}
  .sec--tight{padding:56px 0;}
  .sec-head{margin-bottom:34px;}
  .topline .container span:last-child{display:none;}
  .hero .container{padding-top:56px;padding-bottom:64px;}
  .hero h1{font-size:clamp(1.75rem,7vw,2.3rem);}
  .hero-sub{font-size:1rem;}
  .hero-actions .btn{width:100%;}
  .hero-meta{gap:16px;}
  .step{grid-template-columns:1fr;gap:14px;padding:22px;}
  .step-num{border-right:0;border-bottom:1px solid var(--line);padding:0 0 10px;}
  .env-grid{grid-template-columns:1fr;}
  .panel{padding:24px;}
  .faq-item summary{padding:16px 18px;font-size:.9375rem;}
  .faq-item .faq-body{padding:0 18px 18px 21px;}
  .cta-band{padding:32px 24px;border-radius:18px;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-about{max-width:none;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  body{font-size:.9375rem;}
  .logo{font-size:.9375rem;}
  .logo small{display:none;}
  .hero h1{font-size:1.6875rem;}
  .logo-mark{width:34px;height:34px;flex:0 0 34px;}
  .footer-bottom{flex-direction:column;}
}

/* roulang page: category4 */
:root{
  --ink:#0E3B34;
  --ink-soft:#14544A;
  --teal:#12B8A6;
  --lime:#D6F35A;
  --bg:#F5F7F2;
  --dark:#071B18;
  --text:#17201E;
  --muted:#5C6B66;
  --line:#DDE5DF;
  --warn:#E8873A;
  --radius:18px;
  --radius-sm:12px;
  --shadow:0 12px 32px rgba(7,27,24,.08);
  --shadow-lg:0 24px 64px rgba(7,27,24,.16);
  --ease:cubic-bezier(.22,.61,.36,1);
  --container:1240px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5{color:var(--ink);font-weight:800;letter-spacing:-.02em;margin:0;line-height:1.25;}
h1{font-size:clamp(2.4rem,4.6vw,4rem);}
h2{font-size:clamp(1.8rem,2.6vw,2.5rem);}
h3{font-size:1.25rem;}
p{margin:0 0 1rem;}
a{color:var(--ink);text-decoration:none;transition:color .2s var(--ease),background-color .2s var(--ease),border-color .2s var(--ease);}
a:hover{color:var(--teal);}
img{max-width:100%;height:auto;display:block;}
ul{margin:0;padding:0;list-style:none;}
button,input,select,textarea{font-family:inherit;font-size:1rem;}
:focus-visible{outline:3px solid rgba(18,184,166,.45);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.num{font-variant-numeric:tabular-nums;}

/* ---------- 顶部信息条 ---------- */
.topline{background:var(--dark);color:rgba(245,247,242,.82);font-size:.8125rem;}
.topline .container{display:flex;justify-content:space-between;align-items:center;gap:16px;min-height:38px;}
.topline strong{color:var(--lime);font-weight:700;}
.topline span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}

/* ---------- header / nav ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(245,247,242,.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:76px;}
.logo{display:flex;align-items:center;gap:12px;font-weight:800;font-size:1.0625rem;color:var(--ink);letter-spacing:-.01em;}
.logo small{display:block;font-size:.75rem;font-weight:500;color:var(--muted);letter-spacing:.02em;}
.logo-mark{width:40px;height:40px;border-radius:12px;background:linear-gradient(140deg,var(--ink),var(--ink-soft));color:var(--lime);display:flex;align-items:center;justify-content:center;font-size:1rem;box-shadow:0 8px 20px rgba(7,27,24,.18);flex:none;}
.main-nav>ul{display:flex;align-items:center;gap:6px;}
.main-nav>ul>li{position:relative;}
.nav-link{display:inline-flex;align-items:center;gap:6px;padding:10px 14px;border-radius:10px;font-size:.9375rem;font-weight:600;color:var(--ink);}
.nav-link:hover,.nav-link:focus{background:rgba(18,184,166,.10);color:var(--ink);}
.nav-link.active{color:var(--ink);}
.nav-link.active::after{content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;background:var(--teal);border-radius:2px;}
.has-mega>.nav-link::after{display:none;}
.has-mega>.nav-link.active::after{display:block;}

.mega{
  position:absolute;top:calc(100% + 14px);left:50%;transform:translate(-50%,8px);
  width:min(880px,88vw);background:#fff;border:1px solid var(--line);border-radius:20px;
  box-shadow:var(--shadow-lg);padding:26px;display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:26px;
  opacity:0;visibility:hidden;pointer-events:none;transition:opacity .18s var(--ease),transform .18s var(--ease),visibility .18s;
}
.has-mega:hover .mega,.has-mega:focus-within .mega{opacity:1;visibility:visible;pointer-events:auto;transform:translate(-50%,0);}
.mega h4{font-size:.8125rem;font-weight:700;color:var(--muted);letter-spacing:.08em;margin-bottom:12px;}
.mega-cats{display:grid;gap:10px;}
.mega-cat{display:block;padding:12px 14px;border:1px solid var(--line);border-radius:14px;background:#FBFCFA;}
.mega-cat strong{display:block;font-size:.9375rem;color:var(--ink);}
.mega-cat span{display:block;font-size:.8125rem;color:var(--muted);}
.mega-cat:hover{border-color:var(--teal);transform:translateY(-2px);box-shadow:var(--shadow);}
.mega-list li{margin-bottom:10px;}
.mega-list a{font-size:.875rem;color:var(--text);display:block;line-height:1.5;}
.mega-list a:hover{color:var(--teal);}
.mega-side{background:var(--dark);border-radius:16px;padding:18px;color:rgba(245,247,242,.86);}
.mega-side strong{display:block;color:var(--lime);font-size:.9375rem;margin-bottom:6px;}
.mega-side p{font-size:.8125rem;line-height:1.7;margin:0;}

.nav-tools{display:flex;align-items:center;gap:12px;}
.nav-search{display:flex;align-items:center;gap:8px;border:1px solid var(--line);background:#fff;border-radius:12px;padding:8px 12px;color:var(--muted);font-size:.875rem;}
.nav-search input{border:0;outline:0;width:110px;background:transparent;color:var(--text);font-size:.875rem;}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 22px;border-radius:12px;font-weight:700;font-size:.9375rem;border:1px solid transparent;cursor:pointer;transition:all .2s var(--ease);}
.btn-primary{background:var(--ink);color:#F5F7F2;}
.btn-primary:hover,.btn-primary:focus{background:var(--teal);color:#04211D;transform:translateY(-2px);box-shadow:0 12px 26px rgba(18,184,166,.28);}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink);}
.btn-ghost:hover,.btn-ghost:focus{background:var(--ink);color:#F5F7F2;}
.btn-lime{background:var(--lime);color:#12301F;}
.btn-lime:hover,.btn-lime:focus{background:var(--teal);color:#04211D;}
.btn-sm{padding:9px 16px;font-size:.875rem;}
.nav-toggle{display:none;background:none;border:1px solid var(--line);border-radius:12px;width:44px;height:44px;color:var(--ink);font-size:1.1rem;cursor:pointer;}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:88px 0 76px;background:var(--bg);}
.hero::before{content:"";position:absolute;inset:0;background-image:url('/assets/images/backpic/back-3.png');background-size:cover;background-position:center;opacity:.10;}
.hero::after{content:"";position:absolute;inset:0;background:
  repeating-linear-gradient(90deg,rgba(14,59,52,.05) 0 1px,transparent 1px 88px),
  linear-gradient(180deg,rgba(245,247,242,.4),rgba(245,247,242,.96));}
.hero .container{position:relative;z-index:2;}
.hero-inner{max-width:860px;margin:0 auto;text-align:center;}
.badge{display:inline-flex;align-items:center;gap:8px;padding:7px 16px;border-radius:999px;background:rgba(18,184,166,.12);color:var(--ink);font-size:.8125rem;font-weight:700;letter-spacing:.04em;}
.badge i{color:var(--teal);}
.hero h1{margin:22px 0 18px;}
.hero h1 em{font-style:normal;color:var(--teal);}
.hero-sub{font-size:1.0625rem;color:var(--muted);max-width:680px;margin:0 auto 30px;line-height:1.85;}
.hero-search{max-width:620px;margin:0 auto;display:flex;align-items:center;gap:10px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:10px 12px 10px 18px;box-shadow:var(--shadow);}
.hero-search i{color:var(--muted);}
.hero-search input{flex:1;border:0;outline:0;background:transparent;padding:8px 0;font-size:1rem;color:var(--text);}
.hero-search input::placeholder{color:#9AA8A2;}
.hero-search button{border:0;background:var(--ink);color:#F5F7F2;border-radius:12px;padding:11px 20px;font-weight:700;cursor:pointer;transition:all .2s var(--ease);}
.hero-search button:hover{background:var(--teal);color:#04211D;}
.quick-tags{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-top:22px;}
.quick-tags button{border:1px solid var(--line);background:#fff;color:var(--ink);border-radius:999px;padding:8px 16px;font-size:.875rem;cursor:pointer;transition:all .2s var(--ease);}
.quick-tags button:hover{border-color:var(--teal);color:var(--teal);transform:translateY(-2px);box-shadow:var(--shadow);}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0;}
.section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-dark{background:var(--dark);color:rgba(245,247,242,.86);}
.section-dark h2,.section-dark h3{color:#F5F7F2;}
.section-head{max-width:720px;margin-bottom:44px;}
.section-head.center{margin:0 auto 48px;text-align:center;}
.section-head .eyebrow{display:inline-block;font-size:.8125rem;font-weight:700;letter-spacing:.12em;color:var(--teal);margin-bottom:12px;}
.section-head p{color:var(--muted);margin:14px 0 0;}
.section-dark .section-head p{color:rgba(245,247,242,.72);}

/* ---------- 快捷入口 ---------- */
.cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.cat-card{background:#fff;border:1px solid rgba(14,59,52,.08);border-radius:var(--radius);padding:26px 22px;box-shadow:var(--shadow);transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);display:flex;flex-direction:column;}
.cat-card:hover{transform:translateY(-4px);border-color:var(--teal);box-shadow:0 20px 44px rgba(7,27,24,.14);}
.cat-icon{width:46px;height:46px;border-radius:14px;background:rgba(18,184,166,.12);color:var(--ink);display:flex;align-items:center;justify-content:center;font-size:1.05rem;margin-bottom:18px;}
.cat-card:hover .cat-icon{background:var(--lime);color:#12301F;}
.cat-card h3{font-size:1.125rem;margin-bottom:8px;}
.cat-card p{font-size:.9375rem;color:var(--muted);margin:0 0 18px;}
.cat-card .more{margin-top:auto;font-size:.875rem;font-weight:700;color:var(--teal);}
.cat-card .more i{transition:transform .2s var(--ease);}
.cat-card:hover .more i{transform:translateX(4px);}

/* ---------- 自助排查三步 ---------- */
.check-grid{display:grid;grid-template-columns:1fr 1.15fr;gap:56px;align-items:center;}
.check-visual{position:relative;border-radius:24px;overflow:hidden;box-shadow:var(--shadow);}
.check-visual img{width:100%;aspect-ratio:16/11;object-fit:cover;}
.check-visual .visual-tag{position:absolute;left:18px;bottom:18px;background:rgba(7,27,24,.82);color:var(--lime);border-radius:10px;padding:8px 14px;font-size:.8125rem;font-weight:700;backdrop-filter:blur(4px);}
.step-list{display:grid;gap:18px;}
.step{display:grid;grid-template-columns:56px 1fr;gap:18px;background:#fff;border:1px solid rgba(14,59,52,.08);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);transition:transform .2s var(--ease),border-color .2s var(--ease);}
.step:hover{transform:translateY(-4px);border-color:var(--teal);}
.step-num{font-size:1.5rem;font-weight:800;color:var(--teal);letter-spacing:-.02em;line-height:1.2;}
.step h3{font-size:1.0625rem;margin-bottom:6px;}
.step p{font-size:.9375rem;color:var(--muted);margin:0;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:920px;margin:0 auto;}
.faq-group{margin-bottom:40px;}
.faq-group-title{display:flex;align-items:center;gap:12px;font-size:1.125rem;margin-bottom:18px;}
.faq-group-title i{color:var(--teal);}
.faq-item{position:relative;background:#fff;border:1px solid var(--line);border-radius:16px;margin-bottom:12px;overflow:hidden;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);}
.faq-item::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--teal);opacity:0;transition:opacity .2s var(--ease);}
.faq-item:hover{border-color:var(--teal);box-shadow:var(--shadow);}
.faq-item[open]{border-color:var(--teal);box-shadow:var(--shadow);}
.faq-item[open]::before{opacity:1;}
.faq-item summary{list-style:none;cursor:pointer;padding:22px 56px 22px 26px;font-size:1.0625rem;font-weight:700;color:var(--ink);position:relative;}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{content:"\f067";font-family:"Font Awesome 6 Free";font-weight:900;position:absolute;right:24px;top:50%;transform:translateY(-50%);color:var(--teal);font-size:.875rem;transition:transform .2s var(--ease);}
.faq-item[open] summary::after{content:"\f068";}
.faq-body{padding:0 26px 24px;color:var(--muted);font-size:.9688rem;line-height:1.85;}
.faq-body p{margin:0 0 10px;}
.faq-body p:last-child{margin-bottom:0;}
.faq-body strong{color:var(--ink);}
.faq-empty{display:none;text-align:center;padding:48px 24px;border:1px dashed var(--line);border-radius:var(--radius);background:#fff;color:var(--muted);}
.faq-empty strong{display:block;color:var(--ink);font-size:1.0625rem;margin-bottom:6px;}

/* ---------- 联系 ---------- */
.contact-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:48px;align-items:start;}
.form-card{background:#fff;border:1px solid rgba(14,59,52,.08);border-radius:var(--radius);padding:32px;box-shadow:var(--shadow);}
.field{margin-bottom:18px;}
.field label{display:block;font-size:.875rem;font-weight:700;color:var(--ink);margin-bottom:8px;}
.field input,.field select,.field textarea{width:100%;border:1px solid var(--line);border-radius:12px;padding:12px 14px;background:#FBFCFA;color:var(--text);outline:0;transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background-color .2s var(--ease);}
.field textarea{min-height:118px;resize:vertical;}
.field input:hover,.field select:hover,.field textarea:hover{border-color:#C6D2CB;}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--teal);background:#fff;box-shadow:0 0 0 3px rgba(18,184,166,.16);}
.field .hint{font-size:.8125rem;color:var(--muted);margin-top:6px;}
.check-line{display:flex;align-items:flex-start;gap:10px;font-size:.875rem;color:var(--muted);margin:6px 0 22px;}
.check-line input{width:18px;height:18px;margin-top:3px;accent-color:var(--teal);}
.contact-info{display:grid;gap:16px;}
.info-card{background:#fff;border:1px solid rgba(14,59,52,.08);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);}
.info-card i{color:var(--teal);font-size:1.05rem;}
.info-card h3{font-size:1.0625rem;margin:12px 0 8px;}
.info-card p{font-size:.9375rem;color:var(--muted);margin:0;}
.info-card a{color:var(--ink);font-weight:700;}
.info-card a:hover{color:var(--teal);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:rgba(245,247,242,.72);padding:72px 0 28px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;}
.footer-logo{display:flex;align-items:center;gap:12px;font-size:1.0625rem;font-weight:800;color:#F5F7F2;margin-bottom:16px;}
.footer-logo .logo-mark{background:linear-gradient(140deg,var(--teal),var(--ink-soft));color:var(--lime);}
.footer-about{font-size:.875rem;line-height:1.85;margin:0;max-width:360px;}
.site-footer h4{color:#F5F7F2;font-size:.9375rem;margin-bottom:16px;letter-spacing:.02em;}
.footer-links li{margin-bottom:10px;font-size:.875rem;}
.footer-links a{color:rgba(245,247,242,.72);}
.footer-links a:hover{color:var(--teal);text-decoration:underline;text-underline-offset:4px;}
.footer-links span{color:rgba(245,247,242,.6);}
.footer-bottom{margin-top:48px;padding-top:22px;border-top:1px solid rgba(245,247,242,.14);display:flex;justify-content:space-between;gap:14px;font-size:.8125rem;color:rgba(245,247,242,.55);flex-wrap:wrap;}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1024px){
  .container{padding:0 20px;}
  .section{padding:72px 0;}
  .cat-grid{grid-template-columns:repeat(2,1fr);}
  .check-grid{grid-template-columns:1fr;gap:36px;}
  .contact-grid{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .mega{width:min(760px,92vw);grid-template-columns:1.2fr 1fr;padding:22px;}
  .mega-side{display:none;}
}
@media screen and (max-width:768px){
  .topline .container span:last-child{display:none;}
  .nav-toggle{display:flex;align-items:center;justify-content:center;}
  .main-nav{
    position:fixed;top:0;right:0;bottom:0;width:min(340px,86vw);background:#fff;
    border-left:1px solid var(--line);box-shadow:-18px 0 48px rgba(7,27,24,.16);
    padding:96px 22px 32px;transform:translateX(102%);transition:transform .26s var(--ease);
    overflow-y:auto;z-index:70;
  }
  .main-nav.open{transform:translateX(0);}
  .main-nav>ul{flex-direction:column;align-items:stretch;gap:4px;}
  .nav-link{width:100%;justify-content:space-between;padding:14px 12px;font-size:1rem;}
  .nav-link.active::after{display:none;}
  .has-mega>.nav-link.active::after{display:none;}
  .mega{position:static;transform:none;opacity:1;visibility:visible;pointer-events:auto;width:100%;grid-template-columns:1fr;box-shadow:none;border-radius:14px;padding:16px;margin-top:8px;display:none;}
  .has-mega:hover .mega,.has-mega:focus-within .mega{transform:none;}
  .has-mega.open .mega{display:grid;}
  .nav-search{display:none;}
  .section{padding:56px 0;}
  .hero{padding:64px 0 56px;}
  .hero-sub{font-size:1rem;}
  .cat-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .form-card{padding:24px 20px;}
  .faq-item summary{padding:18px 48px 18px 20px;font-size:1rem;}
  .faq-body{padding:0 20px 20px;}
  .step{grid-template-columns:44px 1fr;padding:18px;}
}
@media screen and (max-width:520px){
  .container{padding:0 16px;}
  .hero-search{flex-wrap:wrap;padding:14px;}
  .hero-search input{width:100%;flex:1 0 100%;}
  .hero-search button{width:100%;}
  h1{font-size:2.1rem;}
  h2{font-size:1.6rem;}
  .section{padding:52px 0;}
  .btn{width:100%;}
  .nav-tools .btn{width:auto;}
  .footer-bottom{flex-direction:column;}
}