/* ============================================================
   legacy.css v1.1 — 后台与内页独立样式（浅色商务风 · 米哈游蓝）
   服务 login/admin/states/404 及 about/product/solution/careers/contact
   ============================================================ */
*,*::before,*::after { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  font-family: -apple-system,BlinkMacSystemFont,"SF Pro SC","SF Pro Text","PingFang SC","Microsoft YaHei",sans-serif;
  font-size: 16px; line-height: 1.6; color: var(--text-primary);
  background: var(--bg-primary); -webkit-font-smoothing: antialiased;
}
:root {
  --bg-primary:#f4f6fb; --bg-secondary:#ffffff; --bg-group:#eef2f8;
  --card-bg:#ffffff; --card-hover:#f8faff;
  --text-primary:#16203a; --text-secondary:#57627a; --text-tertiary:#94a0b8;
  --border:#e7ecf4; --border-strong:#d4dceb;
  --brand-blue:#3778e5; --brand-purple:#2563eb;
  --brand-gradient:linear-gradient(135deg,#3778e5,#2563eb);
  --neon-cyan:#3778e5;
  --success:#12b76a; --warning:#f5a524; --error:#f04438;
  --radius-sm:8px; --radius-md:14px; --radius-lg:20px;
  --shadow-sm:0 1px 3px rgba(20,32,60,.06);
  --shadow-md:0 8px 28px rgba(20,32,60,.09);
  --shadow-lg:0 20px 50px rgba(20,32,60,.13);
  --shadow-brand:0 8px 24px rgba(55,120,229,.28);
}
[data-theme="dark"] {
  --bg-primary:#0a0e1c; --bg-secondary:#11162a; --bg-group:#151c33;
  --card-bg:#131a2e; --card-hover:#18213a;
  --text-primary:#e9edf7; --text-secondary:#a5b0c8; --text-tertiary:#6d7896;
  --border:#232c46; --border-strong:#333e5e;
  --brand-blue:#5b8def; --brand-purple:#3778e5;
  --brand-gradient:linear-gradient(135deg,#5b8def,#3778e5);
  --neon-cyan:#6ea1f0;
  --shadow-brand:0 8px 24px rgba(91,141,239,.30);
  --shadow-sm:0 1px 3px rgba(0,0,0,.4);
  --shadow-md:0 8px 28px rgba(0,0,0,.5);
  --shadow-lg:0 20px 50px rgba(0,0,0,.6);
}
img { max-width: 100%; display: block; }
a { color: var(--brand-blue); text-decoration: none; }
button { font-family: inherit; }
h1,h2,h3,h4 { line-height: 1.25; font-weight: 700; }
code { font-family:"SF Mono",Consolas,monospace; background:var(--bg-group); padding:1px 6px; border-radius:6px; font-size:.9em; }

/* ---------- 布局容器 ---------- */
.container { width:100%; max-width:1200px; margin:0 auto; padding:0 24px; }
.container-narrow { max-width:960px; }
.section { padding:88px 0; }
.section-header { text-align:center; max-width:680px; margin:0 auto 56px; }
.section-header h2 { font-size:clamp(28px,3.4vw,40px); margin:12px 0 16px; }
.section-header p { color:var(--text-secondary); font-size:17px; }
.eyebrow {
  display:inline-block; font-size:13px; font-weight:700; letter-spacing:.12em;
  color:var(--brand-blue); text-transform:uppercase;
}
.text-center { text-align:center; }
.lead { font-size:19px; color:var(--text-secondary); }
.caption { font-size:13px; color:var(--text-tertiary); }
.body-text { color:var(--text-secondary); }
.sep { height:1px; background:var(--border); border:none; margin:32px 0; }
.dot { display:inline-block; width:5px; height:5px; border-radius:50%; background:currentColor; }

/* ---------- 工具类 ---------- */
.flex { display:flex; } .flex-wrap { flex-wrap:wrap; }
.items-center { align-items:center; }
.justify-between { justify-content:space-between; } .justify-center { justify-content:center; }
.grid { display:grid; gap:24px; }
.grid-2 { grid-template-columns:repeat(2,1fr); }
.grid-3 { grid-template-columns:repeat(3,1fr); }
.grid-4 { grid-template-columns:repeat(4,1fr); }
.gap-2 { gap:8px; } .gap-3 { gap:16px; } .gap-4 { gap:24px; } .gap-6 { gap:40px; }
.mb-2 { margin-bottom:8px; } .mb-4 { margin-bottom:24px; } .mb-6 { margin-bottom:32px; }
.mb-8 { margin-bottom:48px; } .mb-12 { margin-bottom:72px; }
.mt-2 { margin-top:8px; } .mt-4 { margin-top:24px; } .mt-6 { margin-top:32px; }
.mt-8 { margin-top:48px; } .mt-12 { margin-top:72px; }
.w-40 { width:40%; } .w-50 { width:50%; } .w-60 { width:60%; } .w-80 { width:80%; }
.tabular { font-variant-numeric:tabular-nums; }
.fit-num { font-variant-numeric:tabular-nums; letter-spacing:-.02em; }
.gray { color:var(--text-tertiary); } .green { color:var(--success); }
.orange { color:var(--warning); } .red { color:var(--error); }
.up { color:var(--success); } .current { color:var(--brand-blue); }

/* ---------- 顶部导航 ---------- */
.nav {
  position:fixed; top:0; left:0; right:0; z-index:1000;
  background:rgba(255,255,255,.82); backdrop-filter:blur(14px);
  border-bottom:1px solid transparent; transition:all .3s ease;
}
.nav.scrolled { border-bottom-color:var(--border); box-shadow:var(--shadow-sm); }
[data-theme="dark"] .nav { background:rgba(10,14,28,.82); }
.nav-inner { height:68px; display:flex; align-items:center; justify-content:space-between; }
.nav-logo { display:flex; align-items:center; gap:10px; font-size:20px; font-weight:800; color:var(--text-primary); }
.nav-logo .logo-mark {
  width:34px; height:34px; border-radius:10px; background:var(--brand-gradient);
  color:#fff; display:grid; place-items:center; font-size:18px;
}
.nav-logo svg { width:34px; height:34px; flex:0 0 auto; }
.nav-logo > span { white-space:nowrap; }
.nav-links { display:flex; gap:34px; list-style:none; }
.nav-link { font-size:15px; font-weight:500; color:var(--text-secondary); transition:color .2s; }
.nav-link:hover,.nav-link.active { color:var(--brand-blue); }
.nav-actions { display:flex; align-items:center; gap:14px; }
.theme-toggle {
  width:38px; height:38px; border-radius:50%; border:1px solid var(--border);
  background:var(--card-bg); cursor:pointer; display:grid; place-items:center; color:var(--text-secondary);
}
.theme-toggle svg { width:18px; height:18px; }
.icon-sun,.icon-moon { display:none; }
[data-theme="dark"] .icon-sun { display:block; }
[data-theme="light"] .icon-moon { display:block; }
.nav-burger { display:none; width:38px; height:38px; border:none; background:transparent; cursor:pointer; }
.nav-burger span { display:block; width:22px; height:2px; background:var(--text-primary); margin:5px auto; border-radius:2px; transition:.3s; }

/* ---------- 移动菜单 ---------- */
.mobile-menu {
  position:fixed; inset:0; z-index:999; background:var(--bg-secondary);
  padding:90px 32px 32px; transform:translateX(100%); transition:transform .35s cubic-bezier(.16,1,.3,1);
  display:flex; flex-direction:column;
}
.mobile-menu.open { transform:translateX(0); }
.mobile-nav-link { font-size:24px; font-weight:700; color:var(--text-primary); padding:14px 0; border-bottom:1px solid var(--border); }
.mobile-menu-cta { margin-top:auto; }

/* reveal 默认可见（无GSAP） */
.reveal,.reveal-delay-1,.reveal-delay-2,.reveal-delay-3 { opacity:1; transform:none; }
/* ============================================================
   按钮
   ============================================================ */
.btn {
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding:12px 26px; border-radius:980px; font-size:15px; font-weight:600;
  cursor:pointer; border:1px solid transparent; white-space:nowrap;
  transition:transform .25s,box-shadow .25s,background .25s,border-color .25s,color .25s;
}
.btn-primary,.btn-gradient { background:var(--brand-gradient); color:#fff; box-shadow:var(--shadow-brand); }
.btn-primary:hover,.btn-gradient:hover { transform:translateY(-2px); box-shadow:0 12px 30px rgba(55,120,229,.30); }
.btn-ghost { background:transparent; color:var(--text-primary); border-color:var(--border-strong); }
.btn-ghost:hover { border-color:var(--brand-blue); color:var(--brand-blue); }
.btn-white { background:#fff; color:var(--brand-blue); box-shadow:var(--shadow-md); }
.btn-block { width:100%; }
.btn-lg { padding:15px 32px; font-size:17px; }
.btn-sm { padding:9px 18px; font-size:14px; }
.btn:disabled { opacity:.6; cursor:not-allowed; transform:none; }
.btn-loading { position:relative; color:transparent!important; }
.btn-loading::after {
  content:""; position:absolute; width:18px; height:18px; border-radius:50%;
  border:2px solid rgba(255,255,255,.5); border-top-color:#fff; animation:spin .7s linear infinite;
}
@keyframes spin { to { transform:rotate(360deg); } }

/* ============================================================
   徽章 / 标签
   ============================================================ */
.badge { display:inline-flex; align-items:center; gap:5px; padding:4px 11px; border-radius:980px; font-size:12px; font-weight:600; background:var(--bg-group); color:var(--text-secondary); }
.badge-accent { background:rgba(55,120,229,.12); color:var(--brand-blue); }
.badge-success { background:rgba(18,183,106,.12); color:var(--success); }
.badge-warning { background:rgba(245,165,36,.14); color:var(--warning); }
.badge-error { background:rgba(240,68,56,.12); color:var(--error); }
.badge-gradient { background:var(--brand-gradient); color:#fff; }
.tag { display:inline-block; padding:6px 15px; border-radius:980px; font-size:13px; background:var(--bg-group); color:var(--text-secondary); margin:4px; }
.status-dot { width:8px; height:8px; border-radius:50%; display:inline-block; background:var(--text-tertiary); }
.status-dot.green,.status-dot.success { background:var(--success); }
.status-dot.red,.status-dot.error { background:var(--error); }
.status-dot.orange,.status-dot.warning { background:var(--warning); }

/* ============================================================
   卡片
   ============================================================ */
.card { background:var(--card-bg); border:1px solid var(--border); border-radius:var(--radius-lg); padding:30px; box-shadow:var(--shadow-sm); }
.card-hover { transition:transform .3s,box-shadow .3s; }
.card-hover:hover { transform:translateY(-5px); box-shadow:var(--shadow-md); }
.card-sm { border-radius:var(--radius-md); padding:20px; }
.card-icon { width:48px; height:48px; border-radius:14px; background:var(--brand-gradient); display:grid; place-items:center; color:#fff; margin-bottom:18px; }
.data-card { background:var(--card-bg); border:1px solid var(--border); border-radius:var(--radius-lg); padding:26px; }
.data-card-label { font-size:14px; color:var(--text-secondary); }
.data-card-value { font-size:34px; font-weight:800; letter-spacing:-.02em; margin:8px 0; font-variant-numeric:tabular-nums; }
.data-card-trend { font-size:13px; }

/* ============================================================
   表单
   ============================================================ */
.form-group { margin-bottom:20px; }
.form-label { display:block; font-size:14px; font-weight:600; margin-bottom:8px; }
.form-control {
  width:100%; padding:12px 15px; font-size:15px; font-family:inherit;
  background:var(--bg-secondary); border:1.5px solid var(--border); border-radius:var(--radius-md);
  color:var(--text-primary); transition:border-color .2s,box-shadow .2s;
}
.form-control::placeholder { color:var(--text-tertiary); }
.form-control:focus { outline:none; border-color:var(--brand-blue); box-shadow:0 0 0 3px rgba(55,120,229,.14); }
textarea.form-control { resize:vertical; min-height:110px; }
select.form-control { cursor:pointer; }
.form-error-text { display:none; font-size:13px; color:var(--error); margin-top:6px; }
.form-group.invalid .form-control { border-color:var(--error); }
.form-group.invalid .form-error-text { display:block; }
input.error,select.error,textarea.error { border-color:var(--error)!important; }
.form-status { margin-top:14px; font-size:14px; display:none; }
.form-status.success { display:block; color:var(--success); }
.form-status.error { display:block; color:var(--error); }
/* ============================================================
   页面头部 / 面包屑
   ============================================================ */
.page-hero { padding:132px 0 56px; text-align:center; background:var(--bg-secondary); border-bottom:1px solid var(--border); }
.page-hero h1 { font-size:clamp(30px,4.4vw,50px); margin:14px 0 16px; }
.page-hero p { font-size:18px; color:var(--text-secondary); max-width:640px; margin:0 auto; }
.breadcrumb { font-size:14px; color:var(--text-tertiary); }
.breadcrumb a { color:var(--text-tertiary); }
.breadcrumb a:hover { color:var(--brand-blue); }

/* ============================================================
   折叠（加入页岗位）
   ============================================================ */
.accordion-item { border:1px solid var(--border); border-radius:var(--radius-md); margin-bottom:14px; overflow:hidden; background:var(--card-bg); transition:border-color .25s; }
.accordion-item.open { border-color:var(--brand-blue); }
.accordion-head { width:100%; display:flex; align-items:center; gap:14px; padding:20px 24px; background:none; border:none; cursor:pointer; text-align:left; color:var(--text-primary); }
.accordion-title { flex:1; font-size:16px; font-weight:600; }
.accordion-meta { display:flex; gap:12px; font-size:13px; color:var(--text-tertiary); font-weight:400; }
.accordion-chevron { width:20px; height:20px; transition:transform .3s; color:var(--text-tertiary); flex-shrink:0; }
.accordion-item.open .accordion-chevron { transform:rotate(180deg); }
.accordion-body { max-height:0; overflow:hidden; transition:max-height .35s ease; }
.accordion-inner { padding:0 24px 24px; color:var(--text-secondary); font-size:15px; }
.accordion-inner p { margin-bottom:6px; }
.accordion-inner strong { color:var(--text-primary); }

/* 旧岗位结构兼容 */
.job-item { border:1px solid var(--border); border-radius:var(--radius-md); margin-bottom:14px; background:var(--card-bg); overflow:hidden; transition:border-color .25s; }
.job-item.open { border-color:var(--brand-blue); }
.accordion-head .job-info { flex:1; }
.job-name { font-size:16px; font-weight:600; color:var(--text-primary); display:block; }
.job-meta { font-size:13px; color:var(--text-tertiary); }
.job-chevron { transition:transform .3s; color:var(--text-tertiary); flex-shrink:0; }
.job-item.open .job-chevron { transform:rotate(180deg); }

/* ============================================================
   时间线
   ============================================================ */
.timeline-title { font-size:26px; text-align:center; margin-bottom:44px; }
.timeline { position:relative; max-width:860px; margin:0 auto; }
.timeline-item { position:relative; padding:0 0 34px 36px; border-left:2px solid var(--border); }
.timeline-item:last-child { border-left-color:transparent; padding-bottom:0; }
.timeline-dot { position:absolute; left:-8px; top:2px; width:14px; height:14px; border-radius:50%; background:var(--brand-blue); border:3px solid var(--bg-primary); box-shadow:0 0 0 2px var(--brand-blue); }
.timeline-date { font-size:13px; font-weight:700; color:var(--brand-blue); }
.timeline-item h4 { font-size:18px; margin:3px 0; }
.timeline-desc { font-size:14px; color:var(--text-secondary); }

/* ============================================================
   页脚
   ============================================================ */
.footer { background:var(--bg-secondary); border-top:1px solid var(--border); padding:64px 0 26px; margin-top:0; }
.footer-grid { display:grid; grid-template-columns:1.7fr 1fr 1fr 1fr; gap:40px; margin-bottom:38px; }
.footer-brand p { color:var(--text-secondary); font-size:14px; margin:16px 0; max-width:340px; }
.footer-col h4 { font-size:15px; margin-bottom:16px; }
.footer-col a { display:block; font-size:14px; color:var(--text-secondary); margin-bottom:10px; }
.footer-col a:hover { color:var(--brand-blue); }
.footer-social { display:flex; gap:12px; }
.footer-social a { width:36px; height:36px; border-radius:50%; background:var(--bg-group); display:grid; place-items:center; color:var(--text-secondary); }
.footer-social a svg { width:18px; height:18px; }
.footer-bottom { display:flex; justify-content:space-between; flex-wrap:wrap; gap:10px; padding-top:24px; border-top:1px solid var(--border); font-size:13px; color:var(--text-tertiary); }
.footer-legal { font-size:13px; color:var(--text-tertiary); }

/* ============================================================
   登录页
   ============================================================ */
.login-page { min-height:100vh; display:grid; place-items:center; padding:40px 20px; position:relative; background:var(--bg-primary); overflow:hidden; }
.hero-decor { position:absolute; inset:0; overflow:hidden; }
.hero-blob { position:absolute; border-radius:50%; filter:blur(90px); opacity:.55; }
.hero-blob.b1 { width:520px; height:520px; background:rgba(55,120,229,.22); top:-170px; left:-130px; }
.hero-blob.b2 { width:480px; height:480px; background:rgba(37,99,235,.20); bottom:-170px; right:-110px; }
.login-back { position:absolute; top:28px; left:32px; display:flex; align-items:center; gap:6px; font-size:14px; color:var(--text-secondary); z-index:2; }
.login-card { position:relative; width:100%; max-width:430px; background:var(--card-bg); border:1px solid var(--border); border-radius:var(--radius-lg); padding:40px; box-shadow:var(--shadow-lg); z-index:2; }
.login-logo { text-align:center; margin-bottom:26px; }
.login-logo svg { width:50px; height:50px; margin:0 auto 12px; }
.login-logo h1 { font-size:20px; }
.login-logo p { font-size:14px; color:var(--text-tertiary); margin-top:4px; }
.login-status { display:none; padding:11px 15px; border-radius:var(--radius-md); font-size:14px; margin-bottom:18px; }
.login-status.show { display:block; }
.login-status.error { background:rgba(240,68,56,.1); color:var(--error); }
.login-status.success { background:rgba(18,183,106,.1); color:var(--success); }
.login-options { display:flex; justify-content:space-between; align-items:center; margin-bottom:22px; font-size:14px; }
.remember { display:flex; align-items:center; gap:7px; color:var(--text-secondary); cursor:pointer; }
.forgot-link { font-size:14px; }
.login-divider { text-align:center; font-size:13px; color:var(--text-tertiary); margin:24px 0 16px; }
/* ============================================================
   管理后台
   ============================================================ */
.admin-layout { display:flex; min-height:100vh; }
.admin-sidebar {
  width:250px; background:var(--bg-secondary); border-right:1px solid var(--border);
  position:fixed; top:0; bottom:0; left:0; padding:22px 14px; overflow-y:auto; z-index:100;
  transition:transform .3s;
}
.admin-logo { display:flex; align-items:center; gap:10px; font-size:18px; font-weight:800; color:var(--text-primary); padding:6px 10px 22px; }
.admin-logo .logo-mark { width:32px; height:32px; border-radius:9px; background:var(--brand-gradient); color:#fff; display:grid; place-items:center; font-size:16px; }
.admin-nav-group { margin-bottom:22px; }
.admin-nav-title { font-size:12px; font-weight:700; color:var(--text-tertiary); text-transform:uppercase; letter-spacing:.08em; padding:0 12px 8px; }
.admin-nav-link { display:flex; align-items:center; gap:10px; padding:10px 12px; border-radius:var(--radius-sm); font-size:14px; font-weight:500; color:var(--text-secondary); margin-bottom:2px; }
.admin-nav-link:hover { background:var(--bg-group); color:var(--text-primary); }
.admin-nav-link.active { background:var(--brand-gradient); color:#fff; box-shadow:var(--shadow-brand); }
.admin-main { flex:1; margin-left:250px; padding:26px 34px; min-width:0; }
.admin-topbar { display:flex; align-items:center; justify-content:space-between; gap:16px; margin-bottom:28px; }
.admin-topbar h1 { font-size:24px; }
.admin-burger { display:none; width:40px; height:40px; border:none; background:var(--card-bg); border-radius:var(--radius-sm); cursor:pointer; }
.admin-user { display:flex; align-items:center; gap:10px; }
.admin-avatar { width:40px; height:40px; border-radius:50%; background:var(--brand-gradient); color:#fff; display:grid; place-items:center; font-weight:700; }
.admin-section { margin-bottom:34px; }
.admin-panel { background:var(--card-bg); border:1px solid var(--border); border-radius:var(--radius-lg); overflow:hidden; box-shadow:var(--shadow-sm); }
.admin-panel-head { display:flex; align-items:center; justify-content:space-between; padding:20px 24px; border-bottom:1px solid var(--border); }
.admin-panel-head h3 { font-size:17px; }
.admin-panel .admin-panel-body { padding:24px; }
.admin-stat-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:20px; margin-bottom:26px; }
.admin-chart-grid { display:grid; grid-template-columns:repeat(2,1fr); gap:20px; }
.admin-table { width:100%; border-collapse:collapse; }
.admin-table th { text-align:left; padding:13px 18px; font-size:13px; color:var(--text-tertiary); background:var(--bg-group); font-weight:600; white-space:nowrap; }
.admin-table td { padding:13px 18px; border-top:1px solid var(--border); font-size:14px; white-space:nowrap; }
.admin-table-wrap { overflow-x:auto; }

/* ============================================================
   状态页（空/错误/加载/骨架屏）
   ============================================================ */
.empty-state { text-align:center; padding:64px 24px; }
.empty-state-icon {
  width:84px; height:84px; margin:0 auto 20px; border-radius:50%;
  background:var(--bg-group); display:grid; place-items:center; color:var(--text-tertiary);
}
.empty-state-icon svg { width:40px; height:40px; }
.empty-state h3 { font-size:19px; margin-bottom:8px; }
.empty-state p { color:var(--text-secondary); font-size:15px; margin-bottom:20px; }

.error-page { min-height:100vh; display:grid; place-items:center; text-align:center; padding:40px 20px; }
.error-code { font-size:clamp(80px,16vw,150px); font-weight:800; line-height:1; background:var(--brand-gradient); -webkit-background-clip:text; background-clip:text; -webkit-text-fill-color:transparent; }
.error-content h2 { font-size:24px; margin:16px 0 10px; }
.error-content p { color:var(--text-secondary); margin-bottom:26px; }
.error-actions,.error-links { display:flex; gap:14px; justify-content:center; flex-wrap:wrap; }

.spinner { width:42px; height:42px; border-radius:50%; border:3px solid var(--border); border-top-color:var(--brand-blue); animation:spin .8s linear infinite; margin:0 auto; }

.skeleton {
  background:linear-gradient(90deg,var(--bg-group) 25%,var(--card-hover) 37%,var(--bg-group) 63%);
  background-size:400% 100%; animation:shimmer 1.4s ease infinite; border-radius:8px;
}
@keyframes shimmer { 0% { background-position:100% 50%; } 100% { background-position:0 50%; } }
.skeleton-title { height:20px; width:55%; margin-bottom:14px; }
.skeleton-text { height:13px; margin-bottom:10px; }
.skeleton-circle,.sk-avatar { width:44px; height:44px; border-radius:50%; }
.skeleton-card { padding:24px; border-radius:var(--radius-lg); background:var(--card-bg); border:1px solid var(--border); }
.skeleton-list { padding:16px; }
.skeleton-row { display:flex; gap:14px; align-items:center; margin-bottom:16px; }
.sk-img { width:100%; height:140px; border-radius:var(--radius-md); }
.sk-line { height:13px; }

.state-block { margin-bottom:40px; }
.state-demo { border:1px solid var(--border); border-radius:var(--radius-lg); overflow:hidden; background:var(--card-bg); }
.screenshot-frame { border:1px solid var(--border); border-radius:var(--radius-lg); overflow:hidden; background:var(--card-bg); }
.screenshot-bar { padding:12px 18px; background:var(--bg-group); border-bottom:1px solid var(--border); font-size:13px; color:var(--text-tertiary); }
.screenshot-body,.demo-body { padding:28px; }
.demo-label { font-size:13px; font-weight:700; color:var(--text-tertiary); margin-bottom:18px; text-transform:uppercase; letter-spacing:.06em; }
/* ============================================================
   产品内页
   ============================================================ */
.product-hero-card { display:grid; grid-template-columns:1fr 1.1fr; gap:40px; align-items:center; background:var(--card-bg); border:1px solid var(--border); border-radius:var(--radius-lg); padding:40px; box-shadow:var(--shadow-md); margin-bottom:40px; }
.product-hero-card img { border-radius:var(--radius-md); }
.product-badges { display:flex; gap:10px; flex-wrap:wrap; margin-bottom:16px; }
.feature-list { list-style:none; }
.feature-list li { display:flex; gap:10px; align-items:flex-start; margin-bottom:12px; color:var(--text-secondary); }
.check { width:22px; height:22px; border-radius:50%; background:rgba(18,183,106,.15); flex-shrink:0; position:relative; margin-top:2px; }
.check::after { content:""; position:absolute; left:7px; top:4px; width:6px; height:10px; border:solid var(--success); border-width:0 2px 2px 0; transform:rotate(45deg); }

/* ============================================================
   解决方案 / 案例
   ============================================================ */
.solution-tabs { display:flex; gap:8px; flex-wrap:wrap; margin-bottom:28px; justify-content:center; }
.tab-btn { padding:10px 22px; border-radius:980px; border:1px solid var(--border); background:var(--card-bg); cursor:pointer; font-size:15px; font-weight:500; color:var(--text-secondary); transition:.2s; }
.tab-btn.active { background:var(--brand-gradient); color:#fff; border-color:transparent; }
.tab-panel { display:none; }
.tab-panel.active { display:block; }
.solution-detail { background:var(--card-bg); border:1px solid var(--border); border-radius:var(--radius-lg); padding:32px; }
.solution-metrics { display:grid; grid-template-columns:repeat(3,1fr); gap:20px; margin:24px 0; }
.solution-metric { text-align:center; padding:20px; background:var(--bg-group); border-radius:var(--radius-md); }
.solution-metric b { display:block; font-size:28px; font-weight:800; color:var(--brand-blue); font-variant-numeric:tabular-nums; }
.solution-metric span { font-size:13px; color:var(--text-tertiary); }
.case-card { background:var(--card-bg); border:1px solid var(--border); border-radius:var(--radius-lg); overflow:hidden; margin-bottom:24px; }
.case-head { display:flex; align-items:center; gap:14px; padding:20px 24px; border-bottom:1px solid var(--border); }
.case-logo { width:46px; height:46px; border-radius:12px; background:var(--bg-group); display:grid; place-items:center; }
.case-meta { font-size:13px; color:var(--text-tertiary); }
.case-body { padding:24px; color:var(--text-secondary); font-size:15px; }
.case-results { display:grid; grid-template-columns:repeat(3,1fr); gap:16px; padding:24px; border-top:1px solid var(--border); }
.case-result { text-align:center; }
.case-result b { display:block; font-size:24px; font-weight:800; color:var(--success); }
.case-result span { font-size:13px; color:var(--text-tertiary); }
.scene-groups { display:grid; gap:24px; }
.scene-tags { display:flex; flex-wrap:wrap; gap:8px; }

/* ============================================================
   CTA / 投递流程 / 福利
   ============================================================ */
.cta-section { background:var(--brand-gradient); border-radius:var(--radius-lg); padding:64px 32px; text-align:center; color:#fff; }
.cta-section h2 { color:#fff; font-size:clamp(26px,3.4vw,38px); margin-bottom:14px; }
.cta-section p { color:rgba(255,255,255,.9); margin-bottom:28px; }
.apply-steps { display:grid; grid-template-columns:repeat(4,1fr); gap:24px; }
.apply-step { text-align:center; }
.apply-step-num { width:54px; height:54px; border-radius:50%; background:var(--brand-gradient); color:#fff; display:grid; place-items:center; font-size:22px; font-weight:800; margin:0 auto 14px; box-shadow:var(--shadow-brand); }
.welfare-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:22px; }
.welfare-item { text-align:center; padding:28px 20px; background:var(--card-bg); border:1px solid var(--border); border-radius:var(--radius-lg); }
.welfare-icon { width:50px; height:50px; border-radius:14px; background:var(--bg-group); display:grid; place-items:center; margin:0 auto 14px; color:var(--brand-blue); }

/* ============================================================
   联系内页
   ============================================================ */
.contact-cards { display:grid; grid-template-columns:repeat(2,1fr); gap:20px; margin-bottom:40px; }
.contact-card-item { display:flex; gap:14px; align-items:flex-start; background:var(--card-bg); border:1px solid var(--border); border-radius:var(--radius-md); padding:22px; }
.contact-card-icon { width:44px; height:44px; border-radius:12px; background:var(--bg-group); display:grid; place-items:center; color:var(--brand-blue); flex-shrink:0; }
.contact-grid { display:grid; grid-template-columns:1fr 1fr; gap:32px; align-items:start; }
.qr-grid { display:grid; grid-template-columns:repeat(2,1fr); gap:20px; }
.qr-item { text-align:center; }
.qr-box { width:140px; height:140px; border-radius:var(--radius-md); border:1.5px dashed var(--border-strong); display:grid; place-items:center; margin:0 auto 10px; color:var(--text-tertiary); font-size:13px; }
.map-frame,.map-placeholder { width:100%; height:320px; border-radius:var(--radius-lg); border:1px solid var(--border); background:var(--bg-group); display:grid; place-items:center; color:var(--text-tertiary); }
.back-to-top { position:fixed; right:28px; bottom:28px; width:46px; height:46px; border-radius:50%; background:var(--brand-gradient); color:#fff; border:none; cursor:pointer; display:grid; place-items:center; box-shadow:var(--shadow-brand); opacity:0; visibility:hidden; transition:.3s; z-index:900; }
.back-to-top.show { opacity:1; visibility:visible; }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width:991px) {
  .nav-links { display:none; }
  .nav-burger { display:block; }
  .product-hero-card { grid-template-columns:1fr; padding:28px; }
  .grid-4,.grid-3 { grid-template-columns:1fr 1fr; }
  .admin-stat-grid { grid-template-columns:1fr 1fr; }
  .admin-chart-grid { grid-template-columns:1fr; }
  .welfare-grid,.apply-steps,.case-results,.solution-metrics { grid-template-columns:1fr 1fr; }
  .contact-grid,.contact-cards { grid-template-columns:1fr; }
  .footer-grid { grid-template-columns:1fr 1fr; }
  .admin-sidebar { transform:translateX(-100%); }
  .admin-sidebar.open { transform:translateX(0); box-shadow:var(--shadow-lg); }
  .admin-main { margin-left:0; }
  .admin-burger { display:grid; place-items:center; }
}
@media (max-width:640px) {
  .section { padding:60px 0; }
  .grid-4,.grid-3,.grid-2 { grid-template-columns:1fr; }
  .admin-stat-grid,.qr-grid,.welfare-grid,.apply-steps,.case-results,.solution-metrics { grid-template-columns:1fr; }
  .footer-grid { grid-template-columns:1fr; }
  .login-card { padding:30px 24px; }
  .admin-main { padding:20px; }
  .footer-bottom { justify-content:flex-start; }
}

/* ============================================================
   v2.0 升级层 — 国际化 / 动效 / 极简风格增强（在 v1.1 基础上追加）
   服务 login/admin/states/404 及 about/product/solution/careers/contact
   ============================================================ */
body { transition: background-color .35s ease, color .35s ease; }

/* 文字选区与键盘焦点（顶级 AI 极简风细节） */
::selection { background:rgba(55,120,229,.20); }
:focus-visible { outline:2px solid var(--brand-blue); outline-offset:2px; border-radius:6px; }

/* ---------- 语言切换器 ---------- */
.lang-switch {
  display:inline-flex; align-items:center; gap:2px; padding:3px;
  border-radius:980px; border:1px solid var(--border); background:var(--bg-group);
}
.lang-switch .lang-opt {
  border:none; background:transparent; cursor:pointer; font-family:inherit;
  font-size:13px; font-weight:600; padding:5px 11px; border-radius:980px;
  color:var(--text-secondary); transition:all .2s ease; line-height:1;
}
.lang-switch .lang-opt:hover { color:var(--brand-blue); }
.lang-switch .lang-opt.active { background:var(--brand-gradient); color:#fff; box-shadow:var(--shadow-brand); }
.lang-switch-fixed { position:fixed; top:18px; right:22px; z-index:1200; }

/* ---------- 英文模式排版（系统英文黑体栈，接近 Inter/SF Pro 观感） ---------- */
.lang-en body {
  font-family:-apple-system,BlinkMacSystemFont,"SF Pro Display","SF Pro Text","Segoe UI",Inter,Roboto,"Helvetica Neue",Arial,sans-serif;
}
.lang-en h1,.lang-en h2,.lang-en h3,.lang-en h4,
.lang-en .nav-logo,.lang-en .btn { letter-spacing:-0.02em; }

/* ---------- 滚动显现（ui-enhance.js 注入 io-anim；不支持 IO 时元素保持可见） ---------- */
.io-anim .reveal {
  opacity:0; transform:translateY(26px);
  transition:opacity .7s cubic-bezier(.16,1,.3,1), transform .7s cubic-bezier(.16,1,.3,1);
}
.io-anim .reveal.io-in { opacity:1; transform:none; }

/* ---------- 按钮流光 ---------- */
.btn-gradient,.btn-primary,.btn-white { position:relative; overflow:hidden; }
.btn-gradient::after,.btn-primary::after,.btn-white::after {
  content:""; position:absolute; top:0; left:0; width:45%; height:100%; pointer-events:none;
  background:linear-gradient(105deg, transparent, rgba(255,255,255,.38), transparent);
  transform:translateX(-260%) skewX(-20deg);
}
.btn-gradient:hover::after,.btn-primary:hover::after,.btn-white:hover::after { animation:btnShine .85s ease; }
@keyframes btnShine { 0% { transform:translateX(-260%) skewX(-20deg); } 100% { transform:translateX(420%) skewX(-20deg); } }

/* ---------- 卡片磁吸悬停（ui-enhance.js 提供 rotateX/Y 内联变换） ---------- */
.card-hover,.case-card,.welfare-item { transform-style:preserve-3d; will-change:transform; }

/* ---------- 兼容别名（states 页曾引用 --accent） ---------- */
:root { --accent:var(--brand-blue); }

/* ---------- 极简风微调：更克制的阴影与更大留白 ---------- */
:root {
  --shadow-md:0 10px 30px -12px rgba(16,24,40,.14);
  --shadow-lg:0 24px 60px -20px rgba(16,24,40,.18);
}
.section-header { margin-bottom:48px; }
.page-hero p { font-size:17px; }

/* ---------- 响应式加固 ---------- */
@media (max-width:768px) {
  .nav-inner { gap:10px; }
  .nav-actions { gap:8px; }
}
@media (max-width:640px) {
  .nav-actions .btn-ghost { display:none; } /* 管理登录移入移动菜单 */
}
@media (max-width:480px) {
  .nav-actions .btn-gradient { display:none; } /* CTA 移入移动菜单 */
  .nav-logo > span { font-size:17px; }
  .section-header h2 { font-size:26px; }
  .page-hero { padding:116px 0 44px; }
  .page-hero h1 { font-size:30px; }
  .lead { font-size:16px; }
  .btn-lg { padding:13px 24px; font-size:16px; }
  .cta-section { padding:48px 20px; }
  .login-card { padding:26px 18px; }
  .admin-topbar h1 { font-size:19px; }
  .admin-main { padding:16px; }
  .lang-switch-fixed { top:14px; right:14px; }
}

/* ---------- 管理后台移动端适配 ---------- */
@media (max-width:768px) {
  /* 顶栏换行：标题一行、用户区一行右对齐 */
  .admin-topbar { flex-wrap:wrap; row-gap:10px; }
  .admin-topbar .admin-user { margin-left:auto; }
  /* 表格在自身内横向滚动，避免撑破视口 */
  .admin-section .card { overflow-x:auto; min-width:0; max-width:100%; }
  .admin-table { min-width:640px; }
}
/* 行内样式 grid-template-columns:repeat(3,1fr) 在窄屏强制单列 */
@media (max-width:640px) {
  .admin-stat-grid { grid-template-columns:1fr !important; }
}

/* ---------- 法律页英文提示横幅（仅 lang-en 显示） ---------- */
.legal-en-note {
  display:none; max-width:640px; margin:20px auto 0; text-align:left;
  font-size:14px; line-height:1.7; color:var(--text-secondary);
  border:1px solid var(--border); border-radius:var(--radius-md);
  background:var(--bg-secondary); padding:12px 16px;
}
.lang-en .legal-en-note { display:block; }