:root{
  --bg:#ffffff;
  --bg-soft:#f5f6fa;
  --bg-card:#ffffff;
  --bg-glass:rgba(255,255,255,.62);
  --glass-border:rgba(255,255,255,.55);
  --text:#171a24;
  --text-soft:#5c6274;
  --line:#e5e8f0;
  --brand:#1a1a2e;
  --brand-2:#f5a623;
  --brand-3:#e8505b;
  --brand-4:#3b6fd4;
  --grad-hero:linear-gradient(135deg,#1a1a2e 0%,#262a58 42%,#3a2352 72%,#5a2440 100%);
  --grad-accent:linear-gradient(135deg,#f5a623 0%,#e8505b 100%);
  --grad-soft:linear-gradient(135deg,rgba(245,166,35,.12) 0%,rgba(59,111,212,.12) 100%);
  --shadow:0 8px 30px rgba(26,26,46,.09);
  --shadow-lg:0 22px 60px rgba(26,26,46,.18);
  --radius:16px;
  --radius-sm:12px;
  --radius-lg:22px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
html[data-theme="dark"]{
  --bg:#101119;
  --bg-soft:#181a24;
  --bg-card:#1b1d29;
  --bg-glass:rgba(28,30,42,.6);
  --glass-border:rgba(255,255,255,.08);
  --text:#e9ebf4;
  --text-soft:#a2a8bc;
  --line:#2a2d3c;
  --brand:#f5a623;
  --brand-2:#f5a623;
  --brand-3:#ff6b76;
  --brand-4:#6f9bff;
  --grad-hero:linear-gradient(135deg,#0d0e16 0%,#1a1c33 45%,#2a1b38 75%,#3a1a2c 100%);
  --grad-accent:linear-gradient(135deg,#f5a623 0%,#ff6b76 100%);
  --grad-soft:linear-gradient(135deg,rgba(245,166,35,.14) 0%,rgba(111,155,255,.14) 100%);
  --shadow:0 8px 30px rgba(0,0,0,.45);
  --shadow-lg:0 22px 60px rgba(0,0,0,.6);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
  transition:background .35s ease,color .35s ease;
}
img,svg{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .25s var(--ease)}
ul,ol{list-style:none}
button{font-family:inherit}
h1,h2,h3,h4{line-height:1.35;font-weight:800;letter-spacing:.2px;color:var(--text)}
h1{font-size:clamp(1.7rem,3.6vw,2.5rem)}
h2{font-size:clamp(1.32rem,2.6vw,1.85rem)}
h3{font-size:clamp(1.05rem,1.6vw,1.22rem)}
h4{font-size:1.02rem}
p{color:var(--text-soft);transition:color .35s ease}
::selection{background:var(--brand-2);color:#161616}
.container{width:min(1180px,92%);margin:0 auto}
section{padding:72px 0;position:relative}
.section-head{max-width:840px;margin-bottom:40px}
.section-head .eyebrow{
  display:inline-block;font-size:.76rem;letter-spacing:2.4px;color:var(--brand-2);
  background:rgba(245,166,35,.13);padding:5px 14px;border-radius:999px;margin-bottom:16px;font-weight:700;
  text-transform:uppercase;
}
.section-head h2{margin-bottom:14px}
.section-head p{font-size:.98rem;max-width:760px}
.skip-link{
  position:absolute;left:-9999px;top:0;background:var(--brand-2);color:#161616;
  padding:10px 18px;z-index:9999;border-radius:0 0 10px 0;font-weight:700;
}
.skip-link:focus{left:0;top:0}

/* ============ 顶部通栏 ============ */
.topbar{
  background:var(--brand);
  color:#eef0f8;
  font-size:.82rem;
  position:relative;
  z-index:10;
}
html[data-theme="dark"] .topbar{background:#0a0b12}
.topbar .container{
  display:flex;justify-content:space-between;align-items:center;gap:16px;padding:9px 0;flex-wrap:wrap;
}
.topbar a{opacity:.88;position:relative}
.topbar a:hover{opacity:1;color:var(--brand-2)}
.topbar .tb-right{display:flex;gap:20px;align-items:center;flex-wrap:wrap}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:900;
  background:var(--bg-glass);
  -webkit-backdrop-filter:blur(18px) saturate(160%);
  backdrop-filter:blur(18px) saturate(160%);
  border-bottom:1px solid var(--line);
  transition:box-shadow .3s var(--ease),background .35s ease,border-color .35s ease;
}
.site-header.scrolled{box-shadow:var(--shadow)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:12px 0}
.brand{display:flex;align-items:center;gap:11px;font-weight:800;font-size:1.06rem;color:var(--text);flex:none}
.brand .logo-mark{
  width:40px;height:40px;border-radius:12px;flex:none;
  transition:transform .4s var(--ease);
}
.brand:hover .logo-mark{transform:rotate(-6deg) scale(1.05)}
.brand small{display:block;font-size:.7rem;font-weight:500;color:var(--text-soft);letter-spacing:1px;margin-top:1px}
.main-nav ul{display:flex;gap:22px;align-items:center}
.main-nav a{
  font-size:.92rem;color:var(--text-soft);font-weight:600;padding:7px 0;position:relative;display:inline-block;
}
.main-nav a:hover{color:var(--brand-2)}
.main-nav a::after{
  content:"";position:absolute;left:0;bottom:0;width:0;height:2px;border-radius:2px;
  background:var(--grad-accent);transition:width .3s var(--ease);
}
.main-nav a:hover::after{width:100%}
.nav-tools{display:flex;align-items:center;gap:10px}
.search-box{
  display:flex;align-items:center;
  border:1px solid var(--line);border-radius:999px;
  padding:4px 5px 4px 15px;
  background:var(--bg-soft);
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.search-box:focus-within{border-color:var(--brand-2);box-shadow:0 0 0 3px rgba(245,166,35,.16)}
.search-box input{
  border:none;background:transparent;outline:none;color:var(--text);
  font-size:.86rem;width:136px;font-family:inherit;
}
.search-box input::placeholder{color:var(--text-soft)}
.search-box button{
  border:none;background:var(--grad-accent);color:#141414;
  border-radius:999px;padding:7px 15px;font-size:.82rem;font-weight:800;cursor:pointer;
  transition:transform .2s var(--ease),filter .2s var(--ease);
}
.search-box button:hover{transform:scale(1.04);filter:brightness(1.05)}
.icon-btn{
  border:1px solid var(--line);background:var(--bg-soft);color:var(--text);
  width:40px;height:40px;border-radius:50%;cursor:pointer;display:grid;place-items:center;
  font-size:1rem;transition:border-color .25s var(--ease),transform .25s var(--ease),background .25s var(--ease);
}
.icon-btn:hover{border-color:var(--brand-2);transform:translateY(-2px)}
.icon-btn:active{transform:translateY(0) scale(.96)}
.menu-toggle{display:none}
.search-result{margin:0 0 10px;font-size:.85rem;color:var(--brand-2);display:none}
.search-result.show{display:block;animation:fadeUp .35s var(--ease)}

/* ============ Banner ============ */
.hero{
  position:relative;overflow:hidden;
  background:var(--grad-hero);
  color:#f4f5fa;
  padding:0;
  isolation:isolate;
}
.hero::before{
  content:"";position:absolute;inset:-30% -10% auto auto;
  width:640px;height:640px;border-radius:50%;
  background:radial-gradient(circle,rgba(245,166,35,.32) 0%,transparent 62%);
  filter:blur(30px);z-index:-1;pointer-events:none;
  animation:floatGlow 14s ease-in-out infinite alternate;
}
.hero::after{
  content:"";position:absolute;inset:auto auto -40% -12%;
  width:560px;height:560px;border-radius:50%;
  background:radial-gradient(circle,rgba(59,111,212,.34) 0%,transparent 64%);
  filter:blur(36px);z-index:-1;pointer-events:none;
  animation:floatGlow 18s ease-in-out infinite alternate-reverse;
}
.hero .slides{position:relative;min-height:540px}
.hero .slide{
  position:absolute;inset:0;opacity:0;pointer-events:none;
  transition:opacity .8s var(--ease);
  display:flex;align-items:center;
}
.hero .slide.active{opacity:1;pointer-events:auto;position:relative}
.hero .slide-inner{
  display:grid;grid-template-columns:1.12fr .88fr;gap:44px;align-items:center;
  padding:76px 0 100px;
}
.hero h1{color:#fff;margin-bottom:20px;text-shadow:0 2px 24px rgba(0,0,0,.28)}
.hero h1 .hl{
  background:var(--grad-accent);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
}
.hero .lead{color:#c9cde2;font-size:1.03rem;margin-bottom:28px;max-width:580px}
.hero .cta-row{display:flex;gap:14px;flex-wrap:wrap}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 28px;border-radius:999px;font-weight:800;font-size:.94rem;
  cursor:pointer;border:none;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),background .25s var(--ease),border-color .25s var(--ease);
  will-change:transform;
}
.btn-primary{
  background:var(--grad-accent);color:#161616;
  box-shadow:0 8px 22px rgba(245,166,35,.32);
}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 14px 32px rgba(245,166,35,.45)}
.btn-primary:active{transform:translateY(-1px) scale(.99)}
.btn-ghost{
  background:rgba(255,255,255,.06);color:#fff;
  border:1px solid rgba(255,255,255,.32);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
}
.btn-ghost:hover{background:rgba(255,255,255,.14);transform:translateY(-3px);border-color:rgba(255,255,255,.6)}
.hero-art{
  border-radius:var(--radius-lg);overflow:hidden;
  box-shadow:0 24px 60px rgba(0,0,0,.45);
  border:1px solid rgba(255,255,255,.14);
  background:rgba(255,255,255,.04);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  transition:transform .5s var(--ease),box-shadow .5s var(--ease);
}
.hero-art:hover{transform:translateY(-6px) scale(1.012);box-shadow:0 32px 72px rgba(0,0,0,.55)}
.hero-dots{
  position:absolute;bottom:26px;left:50%;transform:translateX(-50%);
  display:flex;gap:10px;z-index:5;
}
.hero-dots button{
  width:36px;height:5px;border-radius:3px;border:none;
  background:rgba(255,255,255,.28);cursor:pointer;
  transition:background .3s var(--ease),width .3s var(--ease);
}
.hero-dots button:hover{background:rgba(255,255,255,.55)}
.hero-dots button.active{background:var(--grad-accent);width:48px}
.hero-stats{display:flex;gap:38px;margin-top:36px;flex-wrap:wrap}
.hero-stats div strong{
  display:block;font-size:1.75rem;font-weight:900;line-height:1.2;
  background:var(--grad-accent);
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:transparent;
}
.hero-stats div span{font-size:.8rem;color:#b9bdd4;letter-spacing:.3px}

/* ============ 锚点导航 ============ */
.anchor-nav{
  background:var(--bg-soft);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  padding:14px 0;
  transition:background .35s ease,border-color .35s ease;
}
.anchor-nav ul{display:flex;gap:10px;flex-wrap:wrap;justify-content:center}
.anchor-nav a{
  font-size:.84rem;color:var(--text-soft);padding:7px 15px;border-radius:999px;
  border:1px solid transparent;font-weight:600;display:inline-block;
  transition:color .25s var(--ease),border-color .25s var(--ease),background .25s var(--ease),transform .25s var(--ease);
}
.anchor-nav a:hover{
  color:var(--brand-2);border-color:var(--brand-2);background:var(--bg);
  transform:translateY(-2px);
}

/* ============ 品牌介绍 ============ */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.about-figure{
  border-radius:var(--radius-lg);overflow:hidden;
  box-shadow:var(--shadow);
  border:1px solid var(--line);
  transition:transform .5s var(--ease),box-shadow .5s var(--ease);
}
.about-figure:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.about-list{margin-top:20px;display:grid;gap:13px}
.about-list li{display:flex;gap:11px;font-size:.94rem;color:var(--text-soft)}
.about-list li b{color:var(--text);font-weight:700}
.about-list .dot{
  width:8px;height:8px;border-radius:50%;background:var(--grad-accent);
  margin-top:9px;flex:none;box-shadow:0 0 0 4px rgba(245,166,35,.14);
}

/* ============ 时间线 ============ */
.timeline{position:relative;margin-top:22px;padding-left:28px;border-left:2px solid var(--line)}
.timeline li{position:relative;padding-bottom:26px}
.timeline li:last-child{padding-bottom:0}
.timeline li::before{
  content:"";position:absolute;left:-35px;top:7px;width:12px;height:12px;border-radius:50%;
  background:var(--grad-accent);border:3px solid var(--bg);
  box-shadow:0 0 0 3px rgba(245,166,35,.18);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease);
}
.timeline li:hover::before{transform:scale(1.25);box-shadow:0 0 0 6px rgba(245,166,35,.22)}
.timeline li b{display:block;color:var(--brand-2);font-size:.86rem;letter-spacing:1.2px;font-weight:800}
.timeline li p{font-size:.92rem;margin-top:5px}

/* ============ 通用卡片 ============ */
.grid{display:grid;gap:24px}
.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{
  background:var(--bg-card);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:28px;
  position:relative;
  overflow:hidden;
  transition:transform .35s var(--ease),box-shadow .35s var(--ease),border-color .35s var(--ease),background .35s ease;
}
.card::before{
  content:"";position:absolute;inset:0 0 auto 0;height:3px;
  background:var(--grad-accent);
  transform:scaleX(0);transform-origin:left;
  transition:transform .4s var(--ease);
}
.card:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow-lg);
  border-color:rgba(245,166,35,.45);
}
.card:hover::before{transform:scaleX(1)}
.card h3{margin-bottom:11px}
.card p{font-size:.92rem}
.card .tag{
  display:inline-block;font-size:.72rem;color:var(--brand-2);
  background:rgba(245,166,35,.13);padding:3px 11px;border-radius:999px;
  margin-bottom:13px;font-weight:800;letter-spacing:.4px;
}

/* ============ 产品优势 ============ */
.adv{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.adv .card{text-align:left}
.adv .num{
  font-size:2rem;font-weight:900;line-height:1;margin-bottom:14px;
  background:var(--grad-accent);
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:transparent;
  letter-spacing:-1px;
}

/* ============ 解决方案 ============ */
.solution-item{display:grid;grid-template-columns:64px 1fr;gap:18px;align-items:start}
.solution-item .ico{
  width:64px;height:64px;border-radius:18px;display:grid;place-items:center;
  background:var(--grad-soft);flex:none;
  border:1px solid var(--line);
  transition:transform .35s var(--ease),background .35s ease;
}
.card:hover .ico{transform:rotate(-6deg) scale(1.06)}

/* ============ 案例 ============ */
.case-card{display:flex;flex-direction:column;gap:14px}
.case-meta{display:flex;gap:8px;flex-wrap:wrap;font-size:.76rem;color:var(--text-soft)}
.case-meta span{
  background:var(--bg-soft);padding:4px 11px;border-radius:999px;
  border:1px solid var(--line);font-weight:600;
}
.case-result{
  display:flex;gap:22px;flex-wrap:wrap;margin-top:auto;
  padding-top:16px;border-top:1px dashed var(--line);
}
.case-result div strong{
  display:block;font-size:1.28rem;font-weight:900;
  background:linear-gradient(135deg,var(--brand-3),var(--brand-2));
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:transparent;
}
.case-result div span{font-size:.78rem;color:var(--text-soft)}

/* ============ 评价 ============ */
.quote{position:relative;padding:30px 28px 26px}
.quote::before{
  content:"“";position:absolute;top:0;left:20px;font-size:3.6rem;
  color:var(--brand-2);opacity:.32;font-family:Georgia,"Times New Roman",serif;line-height:1;
}
.quote p{font-size:.95rem;color:var(--text);margin-bottom:18px;position:relative;z-index:1}
.quote .who{display:flex;align-items:center;gap:12px}
.quote .who .avatar{
  width:44px;height:44px;border-radius:50%;overflow:hidden;flex:none;
  border:2px solid var(--line);
}
.quote .who b{font-size:.9rem;display:block;color:var(--text)}
.quote .who span{font-size:.78rem;color:var(--text-soft)}

/* ============ 文章 ============ */
.article-list{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.article-card{display:flex;flex-direction:column;gap:11px}
.article-card .meta{
  font-size:.78rem;color:var(--text-soft);display:flex;gap:14px;flex-wrap:wrap;
}
.article-card .meta span{position:relative}
.article-card h3{font-size:1.06rem;transition:color .25s var(--ease)}
.article-card:hover h3{color:var(--brand-2)}
.article-card p{font-size:.9rem}
.read-more{
  font-size:.86rem;color:var(--brand-2);font-weight:800;margin-top:auto;
  display:inline-flex;align-items:center;gap:4px;
  transition:gap .25s var(--ease),color .25s var(--ease);
}
.read-more:hover{gap:9px;text-decoration:none;color:var(--brand-3)}

/* ============ FAQ ============ */
.faq-list{display:grid;gap:12px;max-width:940px}
.faq-item{
  border:1px solid var(--line);border-radius:var(--radius-sm);
  background:var(--bg-card);overflow:hidden;
  transition:border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.faq-item:hover{border-color:rgba(245,166,35,.45);box-shadow:var(--shadow)}
.faq-item.open{border-color:rgba(245,166,35,.6);box-shadow:var(--shadow)}
.faq-q{
  width:100%;text-align:left;background:transparent;border:none;color:var(--text);
  font-size:.98rem;font-weight:700;padding:19px 54px 19px 22px;cursor:pointer;
  position:relative;font-family:inherit;line-height:1.55;
  transition:color .25s var(--ease);
}
.faq-q:hover{color:var(--brand-2)}
.faq-q::after{
  content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);
  font-size:1.35rem;color:var(--brand-2);font-weight:400;
  transition:transform .3s var(--ease);
}
.faq-item.open .faq-q::after{transform:translateY(-50%) rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .4s var(--ease)}
.faq-a p{padding:0 22px 22px;font-size:.92rem;animation:fadeUp .4s var(--ease)}

/* ============ HowTo ============ */
.howto-steps{counter-reset:step;display:grid;gap:16px;margin-top:24px}
.howto-steps li{
  counter-increment:step;
  display:grid;grid-template-columns:50px 1fr;gap:18px;
  background:var(--bg-card);border:1px solid var(--line);
  border-radius:var(--radius-sm);padding:22px;
  transition:transform .35s var(--ease),box-shadow .35s var(--ease),border-color .35s var(--ease);
}
.howto-steps li:hover{transform:translateX(6px);box-shadow:var(--shadow);border-color:rgba(245,166,35,.45)}
.howto-steps li::before{
  content:counter(step);
  width:50px;height:50px;border-radius:14px;
  background:var(--grad-accent);color:#fff;
  display:grid;place-items:center;font-weight:900;font-size:1.12rem;
  box-shadow:0 6px 16px rgba(245,166,35,.3);
}
.howto-steps h4{margin-bottom:7px}
.howto-steps p{font-size:.9rem}
.howto-note{
  background:var(--bg-soft);
  border-left:4px solid var(--brand-2);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  padding:20px 24px;margin-top:24px;
  transition:background .35s ease;
}
.howto-note p{font-size:.9rem;margin-bottom:9px}
.howto-note p:last-child{margin-bottom:0}
.howto-note b{color:var(--text)}

/* ============ 联系 ============ */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:start}
.contact-info{display:grid;gap:18px}
.contact-info .row{display:flex;gap:15px;align-items:flex-start}
.contact-info .row .ico{
  width:44px;height:44px;border-radius:13px;background:var(--bg-soft);
  display:grid;place-items:center;flex:none;border:1px solid var(--line);
  transition:transform .3s var(--ease),background .3s ease;
}
.contact-info .row:hover .ico{transform:translateY(-3px);background:var(--grad-soft)}
.contact-info .row b{display:block;font-size:.9rem;color:var(--text)}
.contact-info .row span{font-size:.88rem;color:var(--text-soft)}
.contact-form{
  background:var(--bg-card);border:1px solid var(--line);
  border-radius:var(--radius);padding:30px;
  box-shadow:var(--shadow);
  transition:background .35s ease,border-color .35s ease;
}
.contact-form label{display:block;font-size:.84rem;font-weight:700;margin-bottom:7px;color:var(--text)}
.contact-form .field{margin-bottom:17px}
.contact-form input,.contact-form textarea{
  width:100%;border:1px solid var(--line);border-radius:11px;
  padding:12px 15px;font-family:inherit;font-size:.9rem;
  background:var(--bg);color:var(--text);outline:none;
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease),background .35s ease;
}
.contact-form input:focus,.contact-form textarea:focus{
  border-color:var(--brand-2);box-shadow:0 0 0 3px rgba(245,166,35,.16);
}
.contact-form textarea{min-height:118px;resize:vertical}
.contact-form .btn-primary{width:100%;justify-content:center;margin-top:4px}

/* ============ 底部 ============ */
.site-footer{
  background:var(--brand);color:#c9ccdd;
  padding:60px 0 0;font-size:.88rem;
  position:relative;overflow:hidden;
}
html[data-theme="dark"] .site-footer{background:#0a0b12}
.site-footer::before{
  content:"";position:absolute;inset:-40% -10% auto auto;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(245,166,35,.14) 0%,transparent 66%);
  pointer-events:none;
}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;
  padding-bottom:40px;position:relative;z-index:1;
}
.site-footer h4{color:#fff;font-size:.95rem;margin-bottom:16px;font-weight:800}
.site-footer ul{display:grid;gap:10px}
.site-footer a{color:#c9ccdd;transition:color .25s var(--ease),transform .25s var(--ease);display:inline-block}
.site-footer a:hover{color:var(--brand-2);transform:translateX(3px)}
.footer-brand p{color:#a9adc4;font-size:.86rem;margin-top:14px;line-height:1.8}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:.8rem;color:#9fa3bb;position:relative;z-index:1;
}
.footer-bottom .links{display:flex;gap:18px;flex-wrap:wrap}

/* ============ 返回顶部 ============ */
.back-top{
  position:fixed;right:24px;bottom:24px;width:48px;height:48px;border-radius:50%;
  background:var(--grad-accent);color:#161616;border:none;cursor:pointer;
  display:grid;place-items:center;font-size:1.15rem;
  opacity:0;visibility:hidden;
  transition:opacity .35s var(--ease),visibility .35s var(--ease),transform .35s var(--ease),box-shadow .35s var(--ease);
  z-index:800;box-shadow:0 10px 26px rgba(0,0,0,.28);
}
.back-top.show{opacity:1;visibility:visible}
.back-top:hover{transform:translateY(-4px) scale(1.06);box-shadow:0 16px 34px rgba(245,166,35,.4)}
.back-top:active{transform:translateY(-1px) scale(.98)}

/* ============ 滚动动画 ============ */
.reveal{
  opacity:0;transform:translateY(28px);
  transition:opacity .75s var(--ease),transform .75s var(--ease);
  will-change:opacity,transform;
}
.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}

/* ============ 动画关键帧 ============ */
@keyframes fadeUp{
  from{opacity:0;transform:translateY(14px)}
  to{opacity:1;transform:none}
}
@keyframes floatGlow{
  from{transform:translate3d(0,0,0) scale(1)}
  to{transform:translate3d(-40px,30px,0) scale(1.12)}
}

/* ============ 响应式 1024 ============ */
@media (max-width:1024px){
  section{padding:60px 0}
  .hero .slide-inner{grid-template-columns:1fr;padding:60px 0 96px;gap:34px}
  .hero-art{max-width:540px;margin:0 auto}
  .hero .lead{max-width:100%}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .adv{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .about-grid,.contact-grid{grid-template-columns:1fr;gap:36px}
  .about-figure{order:-1}
  .main-nav ul{gap:16px}
  .main-nav a{font-size:.88rem}
  .search-box input{width:110px}
}

/* ============ 响应式 768 ============ */
@media (max-width:768px){
  body{font-size:15.5px}
  section{padding:48px 0}
  .topbar .container{justify-content:center;text-align:center;gap:8px}
  .topbar .tb-right{gap:12px;justify-content:center;font-size:.78rem}
  .nav-wrap{padding:10px 0;gap:10px}
  .brand{font-size:.98rem}
  .brand .logo-mark{width:36px;height:36px}
  .brand small{font-size:.66rem}
  .main-nav{
    position:fixed;inset:0 0 0 auto;width:min(330px,86%);
    background:var(--bg);
    border-left:1px solid var(--line);
    transform:translateX(102%);
    transition:transform .35s var(--ease);
    padding:86px 28px 30px;z-index:950;overflow-y:auto;
    box-shadow:-14px 0 40px rgba(0,0,0,.18);
  }
  .main-nav.open{transform:none}
  .main-nav ul{flex-direction:column;align-items:flex-start;gap:18px}
  .main-nav a{font-size:1.02rem;padding:4px 0}
  .menu-toggle{display:grid}
  .search-box{padding:3px 4px 3px 12px}
  .search-box input{width:88px;font-size:.82rem}
  .search-box button{padding:6px 12px;font-size:.78rem}
  .icon-btn{width:38px;height:38px}
  .hero .slides{min-height:auto}
  .hero .slide-inner{padding:52px 0 92px}
  .hero-stats{gap:22px;margin-top:30px}
  .hero-stats div strong{font-size:1.45rem}
  .hero-stats div span{font-size:.75rem}
  .hero-dots{bottom:20px}
  .hero-dots button{width:28px}
  .hero-dots button.active{width:38px}
  .grid-3,.grid-2,.grid-4,.article-list{grid-template-columns:1fr}
  .adv{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px}
  .footer-bottom{justify-content:center;text-align:center}
  .howto-steps li{grid-template-columns:42px 1fr;padding:18px;gap:14px}
  .howto-steps li::before{width:42px;height:42px;border-radius:12px;font-size:1rem}
  .howto-steps li:hover{transform:none}
  .card{padding:22px}
  .contact-form{padding:22px}
  .quote{padding:26px 22px 22px}
  .faq-q{font-size:.93rem;padding:16px 48px 16px 18px}
  .faq-a p{padding:0 18px 18px}
  .back-top{right:16px;bottom:16px;width:44px;height:44px}
  .anchor-nav ul{gap:8px}
  .anchor-nav a{font-size:.78rem;padding:6px 12px}
}

/* ============ 响应式 480 ============ */
@media (max-width:480px){
  .container{width:94%}
  .hero h1{font-size:1.5rem}
  .hero .lead{font-size:.94rem}
  .hero .cta-row{gap:10px}
  .btn{padding:11px 22px;font-size:.88rem;flex:1 1 auto;min-width:140px}
  .hero-stats{gap:16px}
  .hero-stats div{flex:1 1 40%}
  .search-box input{width:70px}
  .brand small{display:none}
  .about-list li{font-size:.9rem}
  .case-result{gap:16px}
  .section-head{margin-bottom:28px}
}

/* ============ 减少动效 ============ */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation:none!important;
    transition:none!important;
    scroll-behavior:auto!important;
  }
  .reveal{opacity:1;transform:none}
  .hero::before,.hero::after{animation:none}
}

/* ============ 打印 ============ */
@media print{
  .topbar,.site-header,.hero-dots,.back-top,.anchor-nav,.site-footer,.contact-form{display:none!important}
  body{background:#fff;color:#000}
  .card,.hero-art{box-shadow:none;border:1px solid #ddd}
  .reveal{opacity:1;transform:none}
}