:root{
  --brand:#ff6b35;
  --brand-dark:#e2541f;
  --brand-light:#fff1ea;
  --brand-glow:rgba(255,107,53,.35);
  --ink:#1f2328;
  --ink-2:#4a5259;
  --ink-3:#6b737b;
  --line:#e6e9ec;
  --line-soft:rgba(230,233,236,.7);
  --bg:#ffffff;
  --bg-soft:#f7f8fa;
  --card:#ffffff;
  --glass:rgba(255,255,255,.62);
  --glass-border:rgba(255,255,255,.75);
  --shadow:0 6px 24px rgba(31,35,40,.08);
  --shadow-lg:0 18px 48px rgba(31,35,40,.14);
  --radius:14px;
  --radius-lg:22px;
  --maxw:1180px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
html[data-theme="dark"]{
  --brand:#ff8555;
  --brand-dark:#ff6b35;
  --brand-light:#2a1d17;
  --brand-glow:rgba(255,133,85,.32);
  --ink:#e8eaed;
  --ink-2:#b8bec6;
  --ink-3:#8d949c;
  --line:#2c3138;
  --line-soft:rgba(44,49,56,.8);
  --bg:#14171b;
  --bg-soft:#1a1e23;
  --card:#1c2127;
  --glass:rgba(28,33,39,.6);
  --glass-border:rgba(255,255,255,.08);
  --shadow:0 6px 24px rgba(0,0,0,.4);
  --shadow-lg:0 18px 48px rgba(0,0,0,.55);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.8;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
  transition:background .35s var(--ease),color .35s var(--ease);
}
a{color:var(--brand-dark);text-decoration:none;transition:color .25s var(--ease)}
a:hover{text-decoration:underline}
img,svg{max-width:100%;display:block}
.container{max-width:var(--maxw);margin:0 auto;padding:0 20px}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--brand);color:#fff;padding:10px 18px;z-index:9999;border-radius:0 0 10px 0}
.skip-link:focus{left:12px;top:12px;border-radius:10px}
::selection{background:var(--brand-glow);color:var(--ink)}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}

/* 顶部工具条 */
.topbar{
  background:linear-gradient(90deg,var(--bg-soft),var(--bg));
  border-bottom:1px solid var(--line);
  font-size:13px;
  color:var(--ink-3);
  transition:background .35s var(--ease);
}
.topbar .container{display:flex;justify-content:space-between;align-items:center;min-height:38px;gap:16px;flex-wrap:wrap;padding-top:4px;padding-bottom:4px}
.topbar a{color:var(--ink-2)}
.topbar a:hover{color:var(--brand-dark);text-decoration:none}
.topbar-tools{display:flex;gap:16px;align-items:center;flex-wrap:wrap}
.theme-btn{
  background:var(--glass);
  border:1px solid var(--line);
  color:var(--ink-2);
  border-radius:20px;
  padding:3px 12px;
  font-size:12px;
  cursor:pointer;
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  transition:all .25s var(--ease);
}
.theme-btn:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px)}

/* 导航 */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:var(--glass);
  backdrop-filter:blur(18px) saturate(160%);
  -webkit-backdrop-filter:blur(18px) saturate(160%);
  border-bottom:1px solid var(--line-soft);
  transition:box-shadow .3s var(--ease),background .35s var(--ease);
}
.site-header.scrolled{box-shadow:var(--shadow)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:68px;gap:20px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;color:var(--ink);letter-spacing:.3px}
.logo:hover{text-decoration:none;color:var(--ink)}
.logo-mark{
  width:38px;height:38px;border-radius:11px;
  background:linear-gradient(135deg,var(--brand),#ff9a5a);
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-weight:900;font-size:18px;
  box-shadow:0 6px 18px var(--brand-glow);
  transition:transform .35s var(--ease);
}
.logo:hover .logo-mark{transform:rotate(-8deg) scale(1.06)}
.main-nav ul{display:flex;gap:4px;list-style:none;flex-wrap:wrap}
.main-nav a{display:block;padding:8px 12px;color:var(--ink-2);font-size:15px;border-radius:9px;transition:all .25s var(--ease);position:relative}
.main-nav a:hover{background:var(--brand-light);color:var(--brand-dark);text-decoration:none;transform:translateY(-1px)}
.nav-actions{display:flex;align-items:center;gap:10px}
.search-box{
  display:flex;align-items:center;
  border:1px solid var(--line);
  border-radius:22px;
  padding:4px 4px 4px 14px;
  background:var(--bg-soft);
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.search-box:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-glow)}
.search-box input{border:none;background:none;outline:none;color:var(--ink);font-size:14px;width:150px}
.search-box input::placeholder{color:var(--ink-3)}
.search-box button{
  border:none;background:var(--brand);color:#fff;border-radius:18px;
  padding:6px 14px;font-size:13px;cursor:pointer;
  transition:background .25s var(--ease),transform .25s var(--ease);
}
.search-box button:hover{background:var(--brand-dark);transform:scale(1.04)}
.menu-toggle{
  display:none;background:var(--glass);border:1px solid var(--line);
  border-radius:9px;padding:8px 10px;cursor:pointer;color:var(--ink);
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
}
.menu-toggle span{display:block;width:20px;height:2px;background:var(--ink);margin:4px 0;border-radius:2px;transition:transform .3s var(--ease)}

/* Banner */
.hero{
  position:relative;
  background:
    radial-gradient(900px 420px at 8% -10%,rgba(255,107,53,.16),transparent 62%),
    radial-gradient(700px 380px at 96% 8%,rgba(255,154,90,.18),transparent 60%),
    linear-gradient(135deg,#fff5f0 0%,#ffe9df 55%,#fff 100%);
  overflow:hidden;
  isolation:isolate;
  transition:background .35s var(--ease);
}
.hero::before{
  content:"";
  position:absolute;inset:0;z-index:-1;
  background-image:radial-gradient(rgba(255,107,53,.12) 1px,transparent 1px);
  background-size:22px 22px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.6),transparent 78%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.6),transparent 78%);
  pointer-events:none;
}
html[data-theme="dark"] .hero{
  background:
    radial-gradient(900px 420px at 8% -10%,rgba(255,133,85,.16),transparent 62%),
    radial-gradient(700px 380px at 96% 8%,rgba(255,107,53,.12),transparent 60%),
    linear-gradient(135deg,#241a15 0%,#1e1712 55%,#14171b 100%);
}
.hero-inner{display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:center;padding:56px 0}
.hero h1{font-size:38px;line-height:1.35;font-weight:800;letter-spacing:-.5px;animation:heroIn .8s var(--ease) both}
.hero h1 .hl{
  color:var(--brand-dark);
  background:linear-gradient(90deg,var(--brand),#ff9a5a,var(--brand));
  background-size:200% 100%;
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;
  animation:shimmer 6s linear infinite;
}
.hero-lead{margin-top:18px;color:var(--ink-2);font-size:17px;max-width:560px;animation:heroIn .8s .08s var(--ease) both}
.hero-actions{margin-top:26px;display:flex;gap:14px;flex-wrap:wrap;animation:heroIn .8s .16s var(--ease) both}
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 26px;border-radius:28px;
  font-weight:600;font-size:15px;border:1px solid transparent;cursor:pointer;
  transition:all .3s var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg,var(--brand),#ff8f5c);
  color:#fff;
  box-shadow:0 10px 24px var(--brand-glow);
}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 16px 34px var(--brand-glow);text-decoration:none;color:#fff}
.btn-ghost{
  background:var(--glass);color:var(--ink);border-color:var(--line);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand-dark);text-decoration:none;transform:translateY(-3px)}
.hero-stats{display:flex;gap:36px;margin-top:38px;flex-wrap:wrap;animation:heroIn .8s .24s var(--ease) both}
.hero-stat b{
  display:block;font-size:30px;font-weight:800;line-height:1.1;
  background:linear-gradient(135deg,var(--brand-dark),#ff9a5a);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;
}
.hero-stat span{font-size:13px;color:var(--ink-3)}
.hero-visual{position:relative;animation:heroIn .9s .12s var(--ease) both}
.hero-visual::after{
  content:"";
  position:absolute;inset:12% 6%;
  background:radial-gradient(circle,var(--brand-glow),transparent 70%);
  filter:blur(30px);z-index:-1;
  animation:floaty 7s ease-in-out infinite;
}
.hero-visual svg{width:100%;height:auto;filter:drop-shadow(0 18px 40px rgba(255,107,53,.22));animation:floaty 6s ease-in-out infinite}

/* 轮播 */
.carousel{
  position:relative;margin:0 0 10px;
  border-radius:var(--radius-lg);overflow:hidden;
  border:1px solid var(--line);
  background:var(--glass);
  backdrop-filter:blur(16px) saturate(150%);
  -webkit-backdrop-filter:blur(16px) saturate(150%);
  box-shadow:var(--shadow);
}
.carousel-track{display:flex;transition:transform .55s var(--ease)}
.carousel-slide{min-width:100%;display:grid;grid-template-columns:1fr 220px;gap:24px;align-items:center;padding:28px 30px}
.carousel-slide h2{font-size:22px;margin-bottom:8px;line-height:1.45}
.carousel-slide p{color:var(--ink-2);font-size:14.5px}
.carousel-slide .tag{
  display:inline-block;background:var(--brand-light);color:var(--brand-dark);
  font-size:12px;padding:3px 10px;border-radius:12px;margin-bottom:10px;font-weight:600;
}
.carousel-slide svg{width:100%;height:auto;transition:transform .5s var(--ease)}
.carousel-slide:hover svg{transform:scale(1.04)}
.carousel-dots{position:absolute;bottom:12px;right:18px;display:flex;gap:8px}
.carousel-dots button{width:9px;height:9px;border-radius:50%;border:none;background:var(--line);cursor:pointer;padding:0;transition:all .3s var(--ease)}
.carousel-dots button:hover{background:var(--brand-glow)}
.carousel-dots button.active{background:var(--brand);width:22px;border-radius:6px}

/* 通用区块 */
.section{padding:64px 0;position:relative}
.section.soft{background:var(--bg-soft);transition:background .35s var(--ease)}
.section-head{max-width:760px;margin:0 auto 40px;text-align:center}
.section-head .eyebrow{
  display:inline-block;font-size:13px;font-weight:700;color:var(--brand-dark);
  letter-spacing:1px;margin-bottom:10px;
  padding:3px 12px;border-radius:20px;
  background:var(--brand-light);
}
.section-head h2{font-size:30px;line-height:1.4;font-weight:800;letter-spacing:-.3px}
.section-head p{margin-top:12px;color:var(--ink-2)}
.prose p{margin-bottom:16px;color:var(--ink-2)}
.prose h3{font-size:21px;margin:30px 0 12px;font-weight:700;line-height:1.5}
.prose h3:first-child{margin-top:0}
.prose h4{font-size:17px;margin:22px 0 10px;font-weight:700;color:var(--ink)}
.prose ul,.prose ol{margin:0 0 16px 22px;color:var(--ink-2)}
.prose li{margin-bottom:8px}
.prose strong{color:var(--ink)}
.prose a{font-weight:600}

/* 面包屑 */
.breadcrumb{font-size:13px;color:var(--ink-3);padding:14px 0}
.breadcrumb ol{list-style:none;display:flex;flex-wrap:wrap;gap:6px}
.breadcrumb li::after{content:"›";margin-left:6px;color:var(--ink-3)}
.breadcrumb li:last-child::after{content:""}
.breadcrumb a{color:var(--ink-2)}
.breadcrumb a:hover{color:var(--brand-dark)}

/* 卡片网格 */
.grid{display:grid;gap:22px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.card{
  position:relative;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:26px;
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
  overflow:hidden;
}
.card::before{
  content:"";
  position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--brand),#ff9a5a,var(--brand));
  background-size:200% 100%;
  transform:scaleX(0);transform-origin:left;
  transition:transform .4s var(--ease);
}
.card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);border-color:var(--brand-glow)}
.card:hover::before{transform:scaleX(1);animation:shimmer 3s linear infinite}
.card .ico{
  width:48px;height:48px;border-radius:13px;
  background:linear-gradient(135deg,var(--brand-light),var(--bg));
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;
  transition:transform .35s var(--ease);
}
.card:hover .ico{transform:rotate(-6deg) scale(1.08)}
.card h3{font-size:18px;margin-bottom:10px;font-weight:700;line-height:1.5}
.card p{color:var(--ink-2);font-size:14.5px}
.card ul{font-size:14.5px}
.card ul a{color:var(--ink-2)}
.card ul a:hover{color:var(--brand-dark);text-decoration:none}

/* 文章列表 */
.article-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.article-card{
  position:relative;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:24px;
  display:flex;flex-direction:column;gap:10px;
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
  overflow:hidden;
}
.article-card::after{
  content:"";
  position:absolute;right:-40px;bottom:-40px;
  width:120px;height:120px;border-radius:50%;
  background:radial-gradient(circle,var(--brand-glow),transparent 70%);
  opacity:0;transition:opacity .4s var(--ease);
  pointer-events:none;
}
.article-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--brand-glow)}
.article-card:hover::after{opacity:1}
.article-meta{font-size:12.5px;color:var(--ink-3);display:flex;gap:14px;flex-wrap:wrap}
.article-meta time{font-variant-numeric:tabular-nums}
.article-card h3{font-size:17.5px;font-weight:700;line-height:1.5;transition:color .25s var(--ease)}
.article-card:hover h3{color:var(--brand-dark)}
.article-card p{font-size:14px;color:var(--ink-2);flex:1}
.article-card .read{font-size:14px;font-weight:600;color:var(--brand-dark);transition:gap .25s var(--ease)}
.article-card:hover .read{text-decoration:underline}

/* FAQ */
.faq-list{max-width:900px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.faq-item{
  border:1px solid var(--line);
  border-radius:14px;
  background:var(--card);
  overflow:hidden;
  transition:border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.faq-item:hover{border-color:var(--brand-glow)}
.faq-item.open{border-color:var(--brand);box-shadow:0 8px 26px var(--brand-glow)}
.faq-q{
  width:100%;text-align:left;background:none;border:none;
  padding:18px 22px;font-size:16px;font-weight:600;color:var(--ink);
  cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:16px;
  font-family:inherit;line-height:1.6;
  transition:color .25s var(--ease);
}
.faq-q:hover{color:var(--brand-dark)}
.faq-q .plus{
  flex:none;width:24px;height:24px;border-radius:50%;
  background:var(--brand-light);color:var(--brand-dark);
  display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:16px;
  transition:transform .35s var(--ease),background .3s var(--ease),color .3s var(--ease);
}
.faq-item.open .faq-q .plus{transform:rotate(45deg);background:var(--brand);color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height .38s var(--ease)}
.faq-a-inner{padding:0 22px 20px;color:var(--ink-2);font-size:14.5px}

/* HowTo */
.steps{counter-reset:step;display:flex;flex-direction:column;gap:18px;max-width:900px;margin:0 auto}
.step{
  position:relative;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:14px;
  padding:22px 24px 22px 74px;
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.step:hover{transform:translateX(4px);box-shadow:var(--shadow);border-color:var(--brand-glow)}
.step::before{
  counter-increment:step;content:counter(step);
  position:absolute;left:22px;top:22px;
  width:36px;height:36px;border-radius:50%;
  background:linear-gradient(135deg,var(--brand),#ff9a5a);
  color:#fff;font-weight:800;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px var(--brand-glow);
  transition:transform .35s var(--ease);
}
.step:hover::before{transform:scale(1.1)}
.step h3{font-size:17px;margin-bottom:8px;line-height:1.5}
.step p{font-size:14.5px;color:var(--ink-2)}

/* 案例/评价 */
.case-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:26px;
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.case-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--brand-glow)}
.case-card h3{font-size:17px;margin-bottom:10px;line-height:1.5}
.case-card p{font-size:14.5px;color:var(--ink-2)}
.case-card .quote{
  font-size:15px;color:var(--ink-2);
  border-left:3px solid var(--brand);
  padding-left:16px;margin:14px 0;
  font-style:italic;
}
.case-card .who{font-size:13.5px;color:var(--ink-3)}
.case-card .who b{color:var(--ink);display:block;font-size:15px;font-style:normal}

/* 新闻 */
.news-list{display:flex;flex-direction:column;gap:0;border-top:1px solid var(--line)}
.news-item{
  display:flex;gap:20px;padding:18px 12px;
  border-bottom:1px solid var(--line);
  align-items:baseline;
  border-radius:10px;
  transition:background .25s var(--ease),transform .25s var(--ease);
}
.news-item:hover{background:var(--bg);transform:translateX(4px)}
.news-item time{flex:none;font-size:13.5px;color:var(--ink-3);width:110px;font-variant-numeric:tabular-nums}
.news-item a{color:var(--ink);font-size:15.5px;font-weight:500}
.news-item a:hover{color:var(--brand-dark);text-decoration:none}
.news-item .cat{
  flex:none;font-size:12px;background:var(--brand-light);color:var(--brand-dark);
  padding:2px 10px;border-radius:10px;font-weight:600;
}

/* 联系 */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:start}
.contact-info{display:flex;flex-direction:column;gap:16px}
.contact-info .row{
  display:flex;gap:14px;align-items:flex-start;font-size:15px;color:var(--ink-2);
  padding:14px 16px;border-radius:14px;
  background:var(--glass);
  border:1px solid var(--line-soft);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  transition:transform .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.contact-info .row:hover{transform:translateY(-2px);border-color:var(--brand-glow);box-shadow:var(--shadow)}
.contact-info .row b{color:var(--ink);display:block;font-size:14px}
.contact-info .ico{
  flex:none;width:40px;height:40px;border-radius:11px;
  background:var(--brand-light);
  display:flex;align-items:center;justify-content:center;
}
.map-box{
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  overflow:hidden;
  background:var(--bg-soft);
  transition:box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.map-box:hover{box-shadow:var(--shadow-lg);border-color:var(--brand-glow)}
.map-box svg{width:100%;height:auto;transition:transform .6s var(--ease)}
.map-box:hover svg{transform:scale(1.03)}

/* 页脚 */
.site-footer{
  background:linear-gradient(180deg,#1a1e23,#15181c);
  color:#b8bec6;padding:56px 0 0;font-size:14px;
  position:relative;
}
.site-footer::before{
  content:"";
  position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--brand),#ff9a5a,var(--brand));
  background-size:200% 100%;
  animation:shimmer 6s linear infinite;
}
.site-footer a{color:#b8bec6}
.site-footer a:hover{color:#fff;text-decoration:none}
.site-footer .logo{color:#fff}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;padding-bottom:40px}
.footer-grid h3{color:#fff;font-size:15px;margin-bottom:16px}
.footer-grid ul{list-style:none;display:flex;flex-direction:column;gap:10px}
.footer-grid ul a{transition:color .25s var(--ease),padding-left .25s var(--ease)}
.footer-grid ul a:hover{padding-left:4px}
.footer-brand p{line-height:1.9;color:#8d949c;margin-top:14px}
.footer-bottom{
  border-top:1px solid #2c3138;padding:22px 0;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  color:#8d949c;font-size:13px;
}
.footer-bottom nav{display:flex;gap:18px;flex-wrap:wrap}

/* 返回顶部 */
.back-top{
  position:fixed;right:22px;bottom:26px;
  width:46px;height:46px;border-radius:50%;
  background:linear-gradient(135deg,var(--brand),#ff9a5a);
  color:#fff;border:none;cursor:pointer;
  display:none;align-items:center;justify-content:center;
  box-shadow:0 10px 26px var(--brand-glow);
  z-index:200;
  transition:transform .3s var(--ease),box-shadow .3s var(--ease);
}
.back-top.show{display:flex;animation:popIn .35s var(--ease)}
.back-top:hover{transform:translateY(-4px) scale(1.06);box-shadow:0 16px 34px var(--brand-glow)}

/* 滚动动画 */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.visible{opacity:1;transform:none}
.reveal:nth-child(2){transition-delay:.06s}
.reveal:nth-child(3){transition-delay:.12s}
.reveal:nth-child(4){transition-delay:.18s}
.reveal:nth-child(5){transition-delay:.24s}
.reveal:nth-child(6){transition-delay:.3s}

/* 搜索面板 */
.search-panel{
  display:none;position:fixed;inset:0;
  background:rgba(15,18,22,.55);
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
  z-index:300;align-items:flex-start;justify-content:center;
  padding-top:12vh;
}
.search-panel.open{display:flex;animation:fadeIn .25s var(--ease)}
.search-panel-inner{
  background:var(--glass);
  backdrop-filter:blur(24px) saturate(170%);
  -webkit-backdrop-filter:blur(24px) saturate(170%);
  border:1px solid var(--glass-border);
  border-radius:var(--radius-lg);
  width:min(640px,92vw);
  padding:26px;
  box-shadow:var(--shadow-lg);
  animation:popIn .3s var(--ease);
}
.search-panel-inner h3{font-size:18px;margin-bottom:14px}
.search-panel-inner form{display:flex;gap:10px}
.search-panel-inner input{
  flex:1;padding:12px 16px;border:1px solid var(--line);
  border-radius:11px;background:var(--bg-soft);color:var(--ink);
  font-size:15px;outline:none;font-family:inherit;
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.search-panel-inner input:focus{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-glow)}
.search-panel-inner button{
  padding:12px 22px;border:none;border-radius:11px;
  background:var(--brand);color:#fff;font-weight:600;cursor:pointer;
  transition:background .25s var(--ease),transform .25s var(--ease);
}
.search-panel-inner button:hover{background:var(--brand-dark);transform:translateY(-1px)}
.search-hint{margin-top:12px;font-size:13px;color:var(--ink-3)}
.search-close{
  float:right;background:none;border:none;font-size:22px;
  color:var(--ink-3);cursor:pointer;line-height:1;
  transition:color .25s var(--ease),transform .25s var(--ease);
}
.search-close:hover{color:var(--brand);transform:rotate(90deg)}

/* 动画关键帧 */
@keyframes heroIn{
  from{opacity:0;transform:translateY(22px)}
  to{opacity:1;transform:none}
}
@keyframes shimmer{
  0%{background-position:0% 50%}
  100%{background-position:200% 50%}
}
@keyframes floaty{
  0%,100%{transform:translateY(0)}
  50%{transform:translateY(-12px)}
}
@keyframes fadeIn{
  from{opacity:0}
  to{opacity:1}
}
@keyframes popIn{
  from{opacity:0;transform:scale(.94) translateY(8px)}
  to{opacity:1;transform:none}
}

/* 响应式 */
@media(max-width:1024px){
  .nav-wrap{gap:14px}
  .main-nav a{padding:8px 9px;font-size:14px}
  .search-box input{width:120px}
}
@media(max-width:960px){
  .hero-inner{grid-template-columns:1fr;padding:40px 0;gap:28px}
  .hero h1{font-size:30px}
  .hero-visual{max-width:460px;margin:0 auto}
  .grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}
  .article-grid{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .carousel-slide{grid-template-columns:1fr}
  .carousel-slide svg{max-width:180px}
  .section{padding:52px 0}
  .section-head h2{font-size:26px}
}
@media(max-width:720px){
  .main-nav{
    display:none;position:absolute;top:68px;left:0;right:0;
    background:var(--glass);
    backdrop-filter:blur(20px) saturate(170%);
    -webkit-backdrop-filter:blur(20px) saturate(170%);
    border-bottom:1px solid var(--line);
    padding:12px 20px;box-shadow:var(--shadow);
    animation:fadeIn .25s var(--ease);
  }
  .main-nav.open{display:block}
  .main-nav ul{flex-direction:column;gap:4px}
  .main-nav a{padding:11px 14px}
  .menu-toggle{display:block}
  .search-box{display:none}
  .grid-3,.grid-4,.grid-2{grid-template-columns:1fr}
  .hero-stats{gap:22px;margin-top:28px}
  .hero-stat b{font-size:24px}
  .hero-lead{font-size:15.5px}
  .section{padding:44px 0}
  .section-head{margin-bottom:28px}
  .section-head h2{font-size:23px}
  .card,.case-card{padding:22px}
  .article-card{padding:20px}
  .step{padding:20px 18px 20px 66px}
  .step::before{left:16px;top:20px;width:32px;height:32px;font-size:14px}
  .faq-q{padding:16px 18px;font-size:15px}
  .faq-a-inner{padding:0 18px 18px}
  .news-item{flex-wrap:wrap;gap:8px;padding:16px 8px}
  .news-item time{width:auto}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .back-top{right:16px;bottom:18px;width:42px;height:42px}
  .search-panel{padding-top:8vh}
  .search-panel-inner{padding:20px}
  .search-panel-inner form{flex-direction:column}
  .topbar .container{justify-content:center;text-align:center}
  .topbar-tools{justify-content:center}
}
@media(max-width:400px){
  .hero h1{font-size:26px}
  .btn{padding:11px 20px;font-size:14px}
  .logo{font-size:18px}
  .logo-mark{width:34px;height:34px;font-size:16px}
}

/* 减少动效偏好 */
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .reveal{opacity:1;transform:none}
}

/* 打印 */
@media print{
  .topbar,.site-header,.search-panel,.back-top,.carousel-dots,.hero-actions{display:none !important}
  body{background:#fff;color:#000}
  .card,.article-card,.case-card,.step,.faq-item{box-shadow:none;border-color:#ccc}
  .reveal{opacity:1;transform:none}
}