/* ==========================================================
   敏捷兔科技官网 · 红色主题
   视觉参考：Metrobank Bootstrap5 企业模板（暗色首屏 / 红色徽标 / 干净白卡片）
   ========================================================== */
:root{
  --red:#e11d2a;
  --red-dark:#b4121d;
  --red-light:#ff4d58;
  --red-soft:#fff1f2;
  --ink:#0d1017;
  --ink-2:#151a23;
  --ink-3:#1d2330;
  --text:#262c38;
  --muted:#6d7583;
  --line:#e9ebef;
  --bg:#ffffff;
  --bg-soft:#f6f7f9;
  --shadow:0 14px 40px rgba(18,24,38,.08);
  --shadow-lg:0 22px 60px rgba(18,24,38,.16);
  --radius:10px;
  --header-h:78px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;font-size:15px;line-height:1.8;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit}
h1,h2,h3,h4,p,ul{margin:0}
ul{list-style:none;padding:0}
.container{width:min(1200px,calc(100% - 48px));margin:0 auto}
.svg-sprite{position:absolute;width:0;height:0;overflow:hidden}
.icon{width:1em;height:1em;font-size:18px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;flex:none;vertical-align:middle}
section[id],.product-card[id],#industry{scroll-margin-top:calc(var(--header-h) + 12px)}

/* ---------- 通用组件 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:12px 22px;border:1px solid transparent;border-radius:5px;font-size:14px;font-weight:600;letter-spacing:.3px;cursor:pointer;transition:all .25s ease;white-space:nowrap}
.btn .icon{font-size:16px;transition:transform .25s ease}
.btn:hover .icon{transform:translateX(4px)}
.btn-primary{background:var(--red);color:#fff;box-shadow:0 8px 22px rgba(225,29,42,.22)}
.btn-primary:hover{background:var(--red-dark);box-shadow:0 12px 28px rgba(225,29,42,.32);transform:translateY(-2px)}
.btn-ghost{border-color:rgba(255,255,255,.42);color:#fff;background:rgba(255,255,255,.04)}
.btn-ghost:hover{border-color:var(--red);background:var(--red);transform:translateY(-2px)}
.btn-outline{background:#fff;border-color:#d9dde4;color:var(--text)}
.btn-outline:hover{border-color:var(--red);color:var(--red);background:var(--red-soft)}
.btn-lg{padding:15px 28px;font-size:15px}
.btn-block{width:100%;padding:15px}
.icon-circle{width:58px;height:58px;border-radius:50%;background:var(--red);color:#fff;display:inline-flex;align-items:center;justify-content:center;box-shadow:0 10px 24px rgba(225,29,42,.22)}
.icon-circle .icon{font-size:27px}
.icon-circle.sm{width:42px;height:42px;box-shadow:none}
.icon-circle.sm .icon{font-size:20px}
.hl{color:var(--red)}
.eyebrow{display:flex;align-items:center;gap:12px;color:var(--red);font-size:12px;font-weight:700;letter-spacing:2.4px;text-transform:uppercase;margin-bottom:20px}
.eyebrow-line{width:34px;height:2px;background:var(--red);display:inline-block;flex:none}
.eyebrow-light{color:#ff7b84}
.eyebrow-light .eyebrow-line{background:#ff4d58}

/* ---------- 顶部信息条 ---------- */
.topbar{background:#0a0d13;color:#aeb6c3;font-size:12.5px;border-bottom:1px solid rgba(255,255,255,.07)}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:38px}
.topbar-slogan{display:flex;align-items:center;gap:9px}
.pulse-dot{width:7px;height:7px;border-radius:50%;background:var(--red);box-shadow:0 0 0 4px rgba(225,29,42,.18);flex:none}
.topbar-contact{display:flex;align-items:center;gap:22px}
.topbar-contact a,.topbar-hours{display:inline-flex;align-items:center;gap:6px;transition:color .2s}
.topbar-contact a:hover{color:#fff}
.topbar-contact .icon{font-size:13px;color:var(--red-light)}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .3s,min-height .3s}
.site-header.scrolled{box-shadow:0 6px 24px rgba(12,18,30,.1)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:var(--header-h)}
.brand{display:inline-flex;align-items:center;gap:11px;flex:none}
.brand-mark{width:42px;height:42px;flex:none}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:20px;letter-spacing:1px;color:var(--ink);font-weight:800}
.brand-text small{font-size:9.5px;letter-spacing:2.1px;color:#9aa2ae;margin-top:3px;font-weight:600}
.main-nav{margin-left:auto}
.nav-list{display:flex;align-items:center;gap:6px}
.nav-list>li{position:relative}
.nav-link{display:inline-flex;align-items:center;gap:5px;padding:10px 16px;font-size:15px;font-weight:600;color:#333a47;position:relative;transition:color .2s}
.nav-link::after{content:"";position:absolute;left:16px;right:16px;bottom:16px;height:2px;background:var(--red);transform:scaleX(0);transform-origin:left;transition:transform .25s}
.nav-link:hover,.nav-link.active{color:var(--red)}
.nav-link:hover::after,.nav-link.active::after{transform:scaleX(1)}
.nav-link .chev{font-size:14px;transition:transform .25s}
.has-dropdown:hover .chev{transform:rotate(180deg)}
.header-cta{padding:11px 18px;font-size:13.5px}
.menu-toggle{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:5px;background:#fff;color:var(--ink);align-items:center;justify-content:center;cursor:pointer}
.menu-toggle .icon{font-size:22px}

/* 下拉产品菜单 */
.dropdown-panel{position:absolute;top:100%;left:50%;transform:translate(-50%,10px);width:780px;background:#fff;border-top:3px solid var(--red);box-shadow:var(--shadow-lg);border-radius:0 0 8px 8px;padding:22px 26px 0;opacity:0;visibility:hidden;transition:opacity .25s,transform .25s,visibility .25s;z-index:70}
@media (min-width:992px){
  .has-dropdown:hover .dropdown-panel,.has-dropdown:focus-within .dropdown-panel,.dropdown-panel.open{opacity:1;visibility:visible;transform:translate(-50%,0)}
  .has-dropdown::after{content:"";position:absolute;left:0;right:0;top:100%;height:16px}
}
.dropdown-head{display:flex;align-items:baseline;gap:14px;padding-bottom:16px;border-bottom:1px solid var(--line);margin-bottom:14px}
.dropdown-head span{font-size:11px;letter-spacing:2px;color:var(--red);font-weight:700}
.dropdown-head strong{font-size:16px;color:var(--ink)}
.dropdown-grid{display:grid;grid-template-columns:1fr 1fr;gap:4px 18px}
.dropdown-item{display:flex;align-items:center;gap:12px;padding:10px 12px;border-radius:6px;transition:background .2s}
.dropdown-item:hover{background:var(--red-soft)}
.di-icon{width:38px;height:38px;border-radius:8px;background:var(--red-soft);color:var(--red);display:inline-flex;align-items:center;justify-content:center;flex:none}
.di-icon .icon{font-size:19px}
.dropdown-item span:last-child{display:flex;flex-direction:column;min-width:0}
.dropdown-item strong{font-size:14px;color:var(--ink);font-weight:700}
.dropdown-item small{font-size:12px;color:var(--muted);margin-top:1px}
.dropdown-item em{font-style:normal;font-size:10px;color:#fff;background:var(--red);padding:1px 5px;border-radius:3px;margin-left:6px;vertical-align:2px;letter-spacing:.5px}
.dropdown-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;border-top:1px solid var(--line);margin-top:12px;padding:14px 4px;font-size:12px;color:var(--muted)}
.dropdown-foot a{display:inline-flex;align-items:center;gap:6px;color:var(--red);font-weight:700}
.dropdown-foot a .icon{font-size:14px}

/* ---------- 首屏 ---------- */
.hero{position:relative;min-height:640px;display:flex;align-items:center;overflow:hidden;background:#0b0e14;color:#fff;padding:88px 0 122px}
.hero-bg{position:absolute;inset:-16% 0 -10% 0;background:url("../img/hero.png") center right/cover no-repeat;will-change:transform}
.hero-shade{position:absolute;inset:0;background:linear-gradient(90deg,rgba(8,10,15,.97) 0%,rgba(8,10,15,.9) 34%,rgba(8,10,15,.5) 62%,rgba(8,10,15,.25) 100%)}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:60px;align-items:center}
.hero-copy h1{font-size:clamp(40px,5.2vw,68px);line-height:1.22;font-weight:800;letter-spacing:1px;margin-bottom:24px}
.hero-copy h1 .hl{color:#ff4d58}
.hero-lead{font-size:16px;line-height:2;color:#c8ced9;max-width:660px;margin-bottom:34px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:34px}
.hero-tags{display:flex;flex-wrap:wrap;gap:9px}
.hero-tags span{font-size:12.5px;color:#d4dae4;border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.05);padding:5px 13px;border-radius:3px}
.hero-tags span:first-child{border-color:rgba(255,77,88,.55);color:#ff8a92;background:rgba(225,29,42,.12)}
.hero-float{display:flex;justify-content:flex-end}
.float-card{width:290px;background:rgba(17,21,29,.78);border:1px solid rgba(255,255,255,.14);border-top:3px solid var(--red);backdrop-filter:blur(10px);padding:26px 24px 22px;box-shadow:0 24px 60px rgba(0,0,0,.4)}
.float-badge{display:inline-flex;align-items:center;gap:7px;background:var(--red);color:#fff;font-size:12px;font-weight:700;padding:5px 12px;border-radius:3px}
.float-badge .icon{font-size:14px}
.float-title{font-size:22px;font-weight:800;line-height:1.5;margin:18px 0 16px}
.float-steps{display:flex;flex-direction:column;gap:9px;border-top:1px solid rgba(255,255,255,.12);padding-top:16px}
.float-steps li{display:flex;align-items:center;gap:10px;font-size:13px;color:#c3cad6}
.float-steps i{font-style:normal;font-size:11px;font-weight:700;color:#ff6b75;letter-spacing:1px}
.float-foot{display:block;margin-top:18px;font-size:11.5px;color:#8b94a3;border-top:1px dashed rgba(255,255,255,.14);padding-top:14px}

/* 数据条 */
.stat-wrap{position:relative;z-index:5;margin-top:-58px}
.stat-bar{background:#fff;box-shadow:var(--shadow-lg);display:grid;grid-template-columns:repeat(4,1fr);border-top:3px solid var(--red)}
.stat-item{padding:28px 30px;border-right:1px solid var(--line);display:flex;flex-direction:column;gap:4px}
.stat-item:last-child{border-right:none}
.stat-item strong{font-size:34px;line-height:1.2;color:var(--ink);font-weight:800;letter-spacing:.5px}
.stat-item strong b{font-weight:800}
.stat-item span{font-size:13px;color:var(--muted)}

/* 行业条 */
.industry-strip{background:#fff;border-bottom:1px solid var(--line);padding:26px 0}
.industry-inner{display:flex;align-items:center;gap:36px}
.industry-label{font-size:14px;font-weight:800;color:var(--ink);white-space:nowrap;display:flex;flex-direction:column;line-height:1.3}
.industry-label small{font-size:10px;letter-spacing:2px;color:var(--red);font-weight:700;margin-top:3px}
.industry-list{display:grid;grid-template-columns:repeat(8,1fr);gap:12px;flex:1}
.industry-list span{display:inline-flex;align-items:center;justify-content:center;gap:7px;font-size:13px;color:#4b5361;white-space:nowrap}
.industry-list .icon{font-size:17px;color:var(--red)}

/* ---------- 通用区块 ---------- */
.section{padding:100px 0}
.section-head{max-width:820px;margin-bottom:52px}
.section-head h2{font-size:clamp(28px,3.4vw,42px);line-height:1.4;font-weight:800;color:var(--ink);letter-spacing:.5px;margin-bottom:18px}
.section-head p{font-size:15.5px;color:var(--muted);line-height:2;max-width:760px}

/* 服务卡片 */
.section-services{background:#fff}
.service-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.service-card{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px 26px 26px;overflow:hidden;transition:transform .3s,box-shadow .3s,border-color .3s}
.service-card::before{content:"";position:absolute;left:0;top:0;height:3px;width:100%;background:var(--red);transform:scaleX(0);transform-origin:left;transition:transform .3s}
.service-card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:#f2d3d6}
.service-card:hover::before{transform:scaleX(1)}
.sc-num{position:absolute;right:22px;top:22px;font-size:13px;font-weight:800;color:#e5e8ed;letter-spacing:1px}
.service-card .icon-circle{margin-bottom:22px}
.service-card h3{font-size:18px;font-weight:800;color:var(--ink);margin-bottom:12px}
.service-card p{font-size:13.5px;color:var(--muted);line-height:1.95;min-height:80px}
.tag-row{display:flex;flex-wrap:wrap;gap:7px;margin-top:18px;padding-top:16px;border-top:1px dashed var(--line)}
.tag-row span{font-size:11.5px;color:#7b8492;background:var(--bg-soft);border:1px solid var(--line);padding:3px 9px;border-radius:3px}
.service-card:hover .tag-row span{color:var(--red);border-color:#f6d7da;background:var(--red-soft)}

/* 交付流程 */
.process{margin-top:48px;background:var(--bg-soft);border:1px solid var(--line);border-left:3px solid var(--red);padding:30px 34px}
.process-title{display:flex;align-items:baseline;gap:16px;flex-wrap:wrap;margin-bottom:24px}
.process-title strong{font-size:19px;color:var(--ink)}
.process-title span{font-size:13px;color:var(--muted)}
.process-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;position:relative}
.process-step{position:relative;padding-left:52px}
.process-step i{position:absolute;left:0;top:0;width:38px;height:38px;border-radius:50%;background:#fff;border:1px solid #f0c9cd;color:var(--red);display:flex;align-items:center;justify-content:center;font-style:normal;font-size:13px;font-weight:800}
.process-step:not(:last-child)::after{content:"";position:absolute;left:38px;right:-16px;top:19px;height:1px;border-top:1px dashed #d8dde5}
.process-step strong{display:block;font-size:15px;color:var(--ink);margin-bottom:3px}
.process-step span{font-size:12.5px;color:var(--muted);line-height:1.7;display:block}

/* 技术融合 */
.fusion{background:var(--ink);color:#fff;overflow:hidden}
.fusion-grid{display:grid;grid-template-columns:1fr 1fr;min-height:560px}
.fusion-media{position:relative;overflow:hidden}
.fusion-media img{width:100%;height:100%;object-fit:cover;object-position:center}
.fusion-media::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(13,16,23,0) 60%,rgba(13,16,23,.7) 100%)}
.fusion-badge{position:absolute;left:34px;top:34px;z-index:2;background:var(--red);color:#fff;font-size:11px;font-weight:800;letter-spacing:2px;padding:8px 14px;border-radius:3px}
.fusion-copy{padding:76px 60px 76px 70px;display:flex;flex-direction:column;justify-content:center;position:relative}
.fusion-copy::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:linear-gradient(transparent,var(--red),transparent)}
.fusion-copy h2{font-size:clamp(27px,3vw,38px);line-height:1.42;font-weight:800;margin-bottom:18px}
.fusion-copy h2 .hl{color:#ff5a64}
.fusion-copy>p{font-size:14.5px;color:#aeb7c5;line-height:2;max-width:560px;margin-bottom:28px}
.fusion-list{display:flex;flex-direction:column;gap:16px;margin-bottom:32px}
.fusion-item{display:flex;align-items:center;gap:16px}
.fusion-item>div{display:flex;flex-direction:column}
.fusion-item strong{font-size:15.5px;font-weight:700;color:#fff}
.fusion-item span{font-size:13px;color:#98a2b2;margin-top:2px}
.fusion-copy .btn{align-self:flex-start}

/* 产品 */
.section-products{background:var(--bg-soft)}
.product-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.product-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 24px;display:flex;flex-direction:column;transition:transform .3s,box-shadow .3s}
.product-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.pc-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.pc-tag{font-size:11px;font-weight:700;color:var(--red);background:var(--red-soft);border:1px solid #f8d9dc;padding:4px 10px;border-radius:3px}
.pc-tag-new{background:var(--red);color:#fff;border-color:var(--red)}
.product-card h3{font-size:17.5px;font-weight:800;color:var(--ink);margin-bottom:10px}
.product-card>p{font-size:13.5px;color:var(--muted);line-height:1.9;min-height:78px}
.product-card ul{margin:14px 0 20px;display:flex;flex-direction:column;gap:7px}
.product-card li{position:relative;padding-left:16px;font-size:12.8px;color:#58616f;line-height:1.7}
.product-card li::before{content:"";position:absolute;left:0;top:9px;width:6px;height:6px;background:var(--red);border-radius:50%}
.pc-link{margin-top:auto;display:inline-flex;align-items:center;gap:7px;color:var(--red);font-size:13.5px;font-weight:700;border-top:1px solid var(--line);padding-top:16px}
.pc-link .icon{font-size:15px;transition:transform .25s}
.pc-link:hover .icon{transform:translateX(5px)}

/* 关于我们 */
.about{position:relative;background:#111620;color:#fff;padding:96px 0;overflow:hidden}
.about::before{content:"";position:absolute;right:-180px;top:-180px;width:560px;height:560px;border-radius:50%;background:radial-gradient(circle,rgba(225,29,42,.2),transparent 70%)}
.about-grid{position:relative;display:grid;grid-template-columns:1.25fr 1fr;gap:70px;align-items:center}
.about-copy h2{font-size:clamp(28px,3.2vw,40px);font-weight:800;line-height:1.4;margin-bottom:22px}
.about-copy h2 .hl{color:#ff5a64}
.about-copy p{font-size:14.5px;color:#aab4c3;line-height:2.05;margin-bottom:16px;max-width:680px}
.about-checks{display:grid;grid-template-columns:1fr 1fr;gap:12px 20px;margin-top:26px}
.about-checks li{display:flex;align-items:center;gap:9px;font-size:13.5px;color:#d6dce6}
.about-checks .icon{font-size:16px;color:var(--red-light)}
.about-quote{background:linear-gradient(135deg,var(--red),var(--red-dark));padding:32px 34px;border-radius:var(--radius);box-shadow:0 20px 50px rgba(225,29,42,.25)}
.about-quote>.icon{font-size:30px;color:rgba(255,255,255,.7)}
.about-quote p{font-size:26px;font-weight:800;letter-spacing:3px;margin:12px 0 8px}
.about-quote span{font-size:13px;color:rgba(255,255,255,.85)}
.about-mini-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:16px}
.about-mini-grid>div{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);padding:18px 20px;border-radius:6px}
.about-mini-grid strong{display:block;font-size:16px;margin-bottom:4px}
.about-mini-grid span{font-size:12.5px;color:#98a3b3}

/* 案例 */
.case-notice{display:inline-flex;align-items:flex-start;gap:9px;background:var(--red-soft);border:1px solid #f7dadd;color:#8a4750;font-size:12.8px;line-height:1.8;padding:12px 16px;border-radius:5px;margin-top:22px;max-width:820px}
.case-notice .icon{font-size:16px;color:var(--red);margin-top:3px}
.featured-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.case-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:transform .3s,box-shadow .3s}
.case-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.cc-img{position:relative;aspect-ratio:4/3;overflow:hidden;background:#0b1220}
.cc-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.case-card:hover .cc-img img{transform:scale(1.06)}
.cc-cat{position:absolute;left:12px;top:12px;background:var(--red);color:#fff;font-size:11px;font-weight:700;padding:4px 10px;border-radius:3px;box-shadow:0 4px 12px rgba(0,0,0,.25)}
.cc-body{padding:18px 20px 22px}
.cc-body h3{font-size:16px;font-weight:800;color:var(--ink);margin-bottom:7px}
.cc-body p{font-size:12.8px;color:var(--muted);line-height:1.8}

/* 案例库 */
.library{margin-top:56px;background:var(--bg-soft);border:1px solid var(--line);padding:34px}
.library-head{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:22px}
.library-head h3{font-size:21px;font-weight:800;color:var(--ink)}
.library-head h3 span{color:var(--red)}
.library-head p{font-size:13px;color:var(--muted);margin-top:4px}
.library-note{display:inline-flex;align-items:center;gap:7px;font-size:12px;color:#8a929f;background:#fff;border:1px solid var(--line);padding:6px 12px;border-radius:3px}
.library-note .icon{font-size:14px;color:var(--red)}
.filter-chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:24px}
.chip{border:1px solid #dfe3ea;background:#fff;color:#5b6371;font-size:12.8px;padding:7px 15px;border-radius:4px;cursor:pointer;transition:all .2s}
.chip:hover{border-color:var(--red);color:var(--red)}
.chip.active{background:var(--red);border-color:var(--red);color:#fff;box-shadow:0 6px 14px rgba(225,29,42,.2)}
.library-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.lib-card{background:#fff;border:1px solid var(--line);border-radius:6px;padding:18px 18px 16px;display:flex;flex-direction:column;gap:8px;transition:border-color .2s,transform .2s,box-shadow .2s}
.lib-card:hover{border-color:#f0c7cb;transform:translateY(-3px);box-shadow:0 8px 20px rgba(18,24,38,.07)}
.lib-cat{align-self:flex-start;font-size:10.5px;font-weight:700;color:var(--red);background:var(--red-soft);padding:3px 9px;border-radius:3px}
.lib-card h4{font-size:14.5px;font-weight:700;color:var(--ink);line-height:1.5}
.lib-card p{font-size:12.3px;color:var(--muted);line-height:1.8;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.library-more{display:flex;align-items:center;justify-content:center;gap:18px;flex-wrap:wrap;margin-top:26px}
.library-more span{font-size:12.5px;color:var(--muted)}
.library-more .btn .icon{font-size:14px}
.empty-state{grid-column:1/-1;text-align:center;padding:40px;color:var(--muted);font-size:14px}

/* 联系我们 */
.contact{position:relative;background:#0c1017;color:#fff;padding:100px 0;overflow:hidden}
.contact::before{content:"";position:absolute;left:-160px;bottom:-240px;width:600px;height:600px;border-radius:50%;background:radial-gradient(circle,rgba(225,29,42,.18),transparent 70%)}
.contact-grid{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:72px;align-items:start}
.contact-info h2{font-size:clamp(28px,3.2vw,40px);font-weight:800;line-height:1.45;margin-bottom:20px}
.contact-info h2 .hl{color:#ff5a64}
.contact-info>p{font-size:14.5px;color:#aab4c3;line-height:2;max-width:520px;margin-bottom:32px}
.contact-list{display:flex;flex-direction:column;gap:18px}
.contact-list>div{display:flex;align-items:center;gap:15px}
.contact-list>div>div{display:flex;flex-direction:column}
.contact-list strong{font-size:13px;color:#929cad;font-weight:600}
.contact-list span,.contact-list a{font-size:14.5px;color:#e6ebf2;line-height:1.6}
.contact-list a:hover{color:#ff6b75}
.contact-legacy{margin-top:34px!important;font-size:12.5px!important;color:#788392!important;border-top:1px solid rgba(255,255,255,.1);padding-top:18px}
.contact-form-wrap{position:relative}
.contact-form{background:#fff;border-radius:var(--radius);padding:36px 36px 30px;box-shadow:0 26px 70px rgba(0,0,0,.35);border-top:3px solid var(--red)}
.contact-form h3{font-size:22px;font-weight:800;color:var(--ink)}
.form-sub{font-size:13px;color:var(--muted);margin:4px 0 24px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.contact-form label{display:block;font-size:13px;font-weight:600;color:#3a4150;margin-bottom:16px}
.contact-form label em{font-style:normal;color:var(--red)}
.contact-form input,.contact-form select,.contact-form textarea{width:100%;display:block;margin-top:7px;border:1px solid #dfe3ea;border-radius:5px;padding:11px 13px;font-size:13.5px;color:var(--text);background:#fff;outline:none;transition:border-color .2s,box-shadow .2s;font-weight:400}
.contact-form textarea{resize:vertical;min-height:100px;line-height:1.7}
.contact-form input:focus,.contact-form select:focus,.contact-form textarea:focus{border-color:var(--red);box-shadow:0 0 0 3px rgba(225,29,42,.09)}
.contact-form input.invalid,.contact-form textarea.invalid{border-color:var(--red);background:#fff7f8}
.form-note{display:flex;align-items:center;gap:7px;font-size:12px;color:#98a0ac;margin-top:14px;justify-content:center}
.form-note .icon{font-size:14px;color:var(--red)}
.form-success{text-align:center;padding:18px 4px 6px}
.form-success .icon-circle{margin:0 auto 20px}
.form-success h4{font-size:21px;font-weight:800;color:var(--ink);margin-bottom:10px}
.form-success p{font-size:13.5px;color:var(--muted);line-height:1.9;margin-bottom:20px}
.form-success .btn-ghost{border-color:var(--red);color:var(--red)}
.form-success .btn-ghost:hover{color:#fff}
.form-reset{display:block;margin:14px auto 0;border:none;background:none;color:var(--muted);font-size:12.5px;cursor:pointer;text-decoration:underline}
.contact-form.is-sent>.form-success{display:block}
.contact-form.is-sent>*:not(.form-success){display:none!important}

/* 页脚 */
.site-footer{background:#080b11;color:#9aa3b1;padding:66px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:44px;padding-bottom:48px}
.brand-footer .brand-text strong{color:#fff}
.footer-brand p{font-size:13px;line-height:1.95;margin:20px 0 16px;max-width:340px}
.footer-slogan{font-size:13px;color:#ff6b75;letter-spacing:3px;font-weight:700}
.footer-col{display:flex;flex-direction:column;gap:11px}
.footer-col h4{font-size:15px;color:#fff;font-weight:700;margin-bottom:6px}
.footer-col a,.footer-col p{font-size:13px;color:#929cab;transition:color .2s}
.footer-col a:hover{color:#ff6b75}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:20px 0;font-size:12px;color:#6f7887}
.footer-bottom .container{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}

/* 返回顶部 */
.back-top{position:fixed;right:24px;bottom:24px;z-index:50;width:44px;height:44px;border:none;border-radius:50%;background:var(--red);color:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 10px 26px rgba(225,29,42,.35);opacity:0;visibility:hidden;transform:translateY(12px);transition:all .3s}
.back-top.show{opacity:1;visibility:visible;transform:none}
.back-top:hover{background:var(--red-dark)}
.back-top .icon{font-size:20px}

/* 出场动画 */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s cubic-bezier(.2,.7,.3,1)}
.reveal.in{opacity:1;transform:none}
.service-grid .reveal:nth-child(2),.product-grid .reveal:nth-child(2),.featured-grid .reveal:nth-child(2){transition-delay:.06s}
.service-grid .reveal:nth-child(3),.product-grid .reveal:nth-child(3),.featured-grid .reveal:nth-child(3){transition-delay:.12s}
.service-grid .reveal:nth-child(4),.product-grid .reveal:nth-child(4),.featured-grid .reveal:nth-child(4){transition-delay:.18s}
.service-grid .reveal:nth-child(n+5),.product-grid .reveal:nth-child(n+5),.featured-grid .reveal:nth-child(n+5){transition-delay:.1s}

/* ---------- 响应式 ---------- */
@media (max-width:1180px){
  .industry-list{grid-template-columns:repeat(4,1fr);gap:14px 8px}
  .service-grid,.product-grid,.featured-grid{grid-template-columns:repeat(3,1fr)}
  .fusion-copy{padding:60px 40px}
  .dropdown-panel{width:720px}
}
@media (max-width:991px){
  :root{--header-h:68px}
  .header-cta{display:none}
  .menu-toggle{display:inline-flex}
  .main-nav{display:none;position:absolute;top:100%;left:0;right:0;background:#fff;box-shadow:0 20px 40px rgba(12,18,30,.14);border-top:1px solid var(--line);max-height:calc(100vh - 68px);overflow-y:auto}
  .main-nav.open{display:block}
  .nav-list{flex-direction:column;align-items:stretch;gap:0;padding:8px 0 16px}
  .nav-link{display:flex;justify-content:space-between;padding:13px 24px;font-size:15.5px}
  .nav-link::after{display:none}
  .nav-link.active{background:var(--red-soft)}
  .dropdown-panel{position:static;width:auto;transform:none;opacity:1;visibility:visible;box-shadow:none;border-top:none;border-radius:0;padding:6px 16px 12px;display:none;background:#fbfbfc}
  .dropdown-panel.open{display:block}
  .dropdown-grid{grid-template-columns:1fr;gap:0}
  .dropdown-item{padding:9px 12px}
  .dropdown-head,.dropdown-foot span{display:none}
  .dropdown-foot{margin-top:6px;padding:10px 12px}
  .hero-inner{grid-template-columns:1fr;gap:36px}
  .hero-float{justify-content:flex-start}
  .float-card{width:100%;max-width:420px}
  .hero{padding:70px 0 110px}
  .stat-item{padding:22px 18px}
  .stat-item strong{font-size:27px}
  .industry-inner{flex-direction:column;align-items:flex-start;gap:16px}
  .industry-list{width:100%;grid-template-columns:repeat(4,1fr)}
  .section{padding:76px 0}
  .fusion-grid{grid-template-columns:1fr}
  .fusion-media{height:320px}
  .fusion-media::after{background:linear-gradient(0deg,rgba(13,16,23,.7),transparent 60%)}
  .fusion-copy{padding:56px 32px 64px}
  .fusion-copy::before{display:none}
  .about-grid,.contact-grid{grid-template-columns:1fr;gap:44px}
  .about{padding:76px 0}
  .library-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
}
@media (max-width:720px){
  .container{width:calc(100% - 32px)}
  .topbar-slogan{display:none}
  .topbar-inner{justify-content:center;min-height:32px}
  .topbar-contact{gap:14px;font-size:11.5px;flex-wrap:wrap;justify-content:center}
  .topbar-hours{display:none}
  .brand-mark{width:36px;height:36px}
  .brand-text strong{font-size:17px}
  .brand-text small{font-size:8px;letter-spacing:1.5px}
  .hero{min-height:auto;padding:62px 0 100px}
  .hero-copy h1{font-size:38px}
  .hero-lead{font-size:14.5px;line-height:1.9}
  .hero-actions .btn{padding:12px 18px;font-size:14px}
  .hero-shade{background:linear-gradient(90deg,rgba(8,10,15,.96),rgba(8,10,15,.78))}
  .stat-wrap{margin-top:-44px}
  .stat-bar{grid-template-columns:1fr 1fr}
  .stat-item{border-bottom:1px solid var(--line);padding:18px 16px}
  .stat-item:nth-child(2){border-right:none}
  .stat-item:nth-child(3),.stat-item:nth-child(4){border-bottom:none}
  .stat-item strong{font-size:26px}
  .stat-item span{font-size:12px}
  .industry-list{grid-template-columns:repeat(2,1fr)}
  .industry-list span{justify-content:flex-start}
  .section{padding:64px 0}
  .section-head{margin-bottom:36px}
  .section-head h2{font-size:27px}
  .service-grid,.product-grid,.featured-grid,.library-grid{grid-template-columns:1fr 1fr;gap:14px}
  .service-card,.product-card{padding:22px 18px}
  .service-card p,.product-card>p{min-height:0}
  .service-card h3{font-size:16px}
  .product-card h3{font-size:15.5px}
  .process{padding:24px 20px}
  .process-steps{grid-template-columns:1fr 1fr;gap:20px}
  .process-step:not(:last-child)::after{display:none}
  .fusion-copy{padding:46px 22px 56px}
  .about-checks,.about-mini-grid{grid-template-columns:1fr 1fr}
  .library{padding:22px 16px}
  .library-head h3{font-size:18px}
  .contact{padding:64px 0}
  .contact-form{padding:26px 20px}
  .form-row{grid-template-columns:1fr;gap:0}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom .container{flex-direction:column;gap:6px}
  .back-top{right:16px;bottom:16px}
}
@media (max-width:480px){
  .service-grid,.product-grid,.featured-grid,.library-grid{grid-template-columns:1fr}
  .hero-tags span{font-size:11.5px}
  .about-checks,.about-mini-grid,.about-quote p{font-size:1em}
  .about-quote p{font-size:22px}
  .desktop-only{display:none}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}
  .reveal{opacity:1;transform:none}
}

/* ==========================================================
   多页面扩展：内页页头 / 下拉按钮 / 补充区块 / CTA
   ========================================================== */
html{scroll-padding-top:calc(var(--header-h) + 10px)}
.product-card[id]{scroll-margin-top:calc(var(--header-h) + 24px)}

/* 导航：产品链接右侧独立下拉按钮（移动端使用） */
.nav-drop-row{display:flex;align-items:center;position:relative}
.dropdown-caret{display:none;align-items:center;justify-content:center;flex:none;width:40px;height:40px;border:none;border-radius:5px;background:var(--bg-soft);color:#333a47;cursor:pointer}
.dropdown-caret .icon{font-size:18px;transition:transform .25s}
.has-dropdown.open .dropdown-caret .icon{transform:rotate(180deg)}

/* 内页页头 */
.page-hero{position:relative;background:#0b0e14;color:#fff;overflow:hidden}
.page-hero-bg{position:absolute;inset:0;background:url("../img/hero.png") center right/cover no-repeat;opacity:.6}
.page-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(8,10,15,.97) 0%,rgba(8,10,15,.9) 42%,rgba(8,10,15,.48) 100%)}
.page-hero-inner{position:relative;z-index:2;padding:54px 0 60px}
.breadcrumb{display:flex;align-items:center;gap:10px;font-size:12.5px;color:#98a2b2;margin-bottom:26px}
.breadcrumb a{transition:color .2s}
.breadcrumb a:hover{color:#ff6b75}
.breadcrumb span{color:#5c6675}
.breadcrumb strong{color:#e6ebf2;font-weight:600}
.page-hero h1{font-size:clamp(32px,4vw,50px);font-weight:800;letter-spacing:1.5px;line-height:1.3;margin-bottom:14px}
.page-hero p{font-size:15px;color:#c3cbd8;line-height:1.95;max-width:740px;margin:0}
.page-hero .eyebrow{margin-bottom:14px}
.page-hero-deco{position:absolute;right:4%;top:50%;transform:translateY(-50%);z-index:1;font-size:clamp(58px,9vw,126px);font-weight:800;letter-spacing:-4px;color:rgba(255,255,255,.055);white-space:nowrap;pointer-events:none;user-select:none}

/* 区块补充 */
.section-alt{background:var(--bg-soft)}
.center-actions{display:flex;justify-content:center;margin-top:40px}
.promise-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.promise-card{background:#fff;border:1px solid var(--line);border-top:3px solid var(--red);border-radius:var(--radius);padding:28px 24px;transition:transform .3s,box-shadow .3s}
.promise-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.promise-card .icon-circle{margin-bottom:18px}
.promise-card h3{font-size:18px;font-weight:800;color:var(--ink);margin-bottom:10px}
.promise-card p{font-size:13.5px;color:var(--muted);line-height:1.95;min-height:80px}
.note-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.note-card{position:relative;background:var(--bg-soft);border:1px solid var(--line);border-radius:var(--radius);padding:32px 28px 28px;overflow:hidden}
.note-card i{position:absolute;right:20px;top:10px;font-style:normal;font-size:56px;font-weight:800;color:#eceff3;letter-spacing:-3px}
.note-card h3{position:relative;font-size:18px;font-weight:800;color:var(--ink);margin-bottom:12px}
.note-card p{position:relative;font-size:13.5px;color:var(--muted);line-height:1.95}
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.faq-item{background:#fff;border:1px solid var(--line);border-left:3px solid var(--red);border-radius:6px;padding:24px 26px}
.faq-item h3{font-size:17px;font-weight:800;color:var(--ink);margin-bottom:9px}
.faq-item p{font-size:13.5px;color:var(--muted);line-height:1.95}

/* 页尾行动号召 */
.cta-band{position:relative;background:linear-gradient(110deg,#a9111b,#e11d2a 52%,#c01521);color:#fff;overflow:hidden}
.cta-band::before{content:"";position:absolute;right:-110px;top:-150px;width:440px;height:440px;border-radius:50%;border:1px solid rgba(255,255,255,.16);box-shadow:0 0 0 60px rgba(255,255,255,.04),0 0 0 120px rgba(255,255,255,.03)}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:28px;padding:46px 0}
.cta-inner h2{font-size:clamp(22px,2.6vw,32px);font-weight:800;line-height:1.5;margin-bottom:6px}
.cta-inner p{font-size:14px;color:rgba(255,255,255,.86)}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}
.btn-white{background:#fff;color:var(--red);border-color:#fff;box-shadow:0 8px 22px rgba(0,0,0,.12)}
.btn-white:hover{background:#fff1f2;transform:translateY(-2px)}
.btn-line-light{border-color:rgba(255,255,255,.62);color:#fff;background:rgba(255,255,255,.04)}
.btn-line-light:hover{background:rgba(255,255,255,.14);transform:translateY(-2px)}

/* 多页面响应式补充 */
@media (max-width:1180px){
  .promise-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:991px){
  .nav-link .chev{display:none}
  .nav-drop-row{width:100%}
  .nav-drop-row .nav-link{flex:1;padding-right:0}
  .dropdown-caret{display:inline-flex;margin-right:16px}
  .page-hero-inner{padding:42px 0 48px}
  .page-hero-deco{right:-4%;font-size:68px}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:22px}
  .faq-grid{grid-template-columns:1fr}
  .note-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:720px){
  .promise-grid,.note-grid,.faq-grid{grid-template-columns:1fr}
  .page-hero-inner{padding:34px 0 40px}
  .page-hero-deco{display:none}
  .cta-inner{padding:36px 0}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1;min-width:150px;padding:12px 14px;font-size:13px}
  .center-actions .btn{width:100%}
}