/* ============================================================
   长江集疏运综合服务平台 · 行业解决方案 设计系统
   精密工业 · 蓝金编辑风  (Precision-Industrial / Blue-Gold Editorial)
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Barlow+Condensed:wght@400;500;600;700&family=Noto+Sans+SC:wght@300;400;500;700&family=Noto+Serif+SC:wght@600;700;900&display=swap');

:root {
  /* 色板 */
  --ink-950: #071A2E;
  --ink-900: #0B2540;
  --ink-850: #0E2E4F;
  --navy: #005BAC;
  --navy-deep: #0A4B9E;
  --navy-ink: #123254;
  --gold: #C9A227;
  --gold-soft: #E7C96E;
  --gold-line: rgba(201,162,39,.42);
  --ice: #EAF3FC;
  --ice-deep: #DCE9F6;
  --paper: #F5F7FB;
  --card: #FFFFFF;
  --ink-text: #16233B;
  --body: #3D4B63;
  --muted: #74829C;
  --line: #E1E8F2;
  --red: #C8102E;
  --green: #15803D;

  /* 字体 */
  --font-serif: 'Noto Serif SC', 'Songti SC', 'STSong', serif;
  --font-sans: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-num: 'Barlow Condensed', 'Noto Sans SC', sans-serif;

  /* 度量 */
  --radius: 14px;
  --radius-lg: 22px;
  --shadow-sm: 0 2px 10px rgba(7,26,46,.06);
  --shadow-md: 0 16px 40px -14px rgba(7,26,46,.18);
  --shadow-lg: 0 30px 70px -20px rgba(7,26,46,.30);
  --maxw: 1200px;
}

* { margin:0; padding:0; box-sizing:border-box; }

html { scroll-behavior:smooth; -webkit-font-smoothing:antialiased; }

body {
  font-family: var(--font-sans);
  color: var(--body);
  background: var(--paper);
  font-size: 15px;
  line-height: 1.8;
  overflow-x:hidden;
}

/* ---------- 文字工具 ---------- */
h1,h2,h3,h4 { font-family: var(--font-serif); color: var(--ink-text); line-height:1.3; }
.eyebrow {
  font-family: var(--font-num);
  text-transform:uppercase;
  letter-spacing:.28em;
  font-size:13px;
  font-weight:600;
  color: var(--navy);
  display:inline-flex; align-items:center; gap:12px;
}
.eyebrow.gold { color: var(--gold); }
.eyebrow::before {
  content:""; width:34px; height:1px;
  background: linear-gradient(90deg, var(--gold), transparent);
}
.eyebrow.line-left::before{ display:none; }
.eyebrow.line-left::after{
  content:""; width:34px; height:1px; background:linear-gradient(90deg,transparent,var(--gold));
}
.lead { font-size:16.5px; color:var(--muted); }

/* ---------- 布局 ---------- */
.wrap { width:100%; max-width:var(--maxw); margin:0 auto; padding:0 32px; }
section { position:relative; }

/* 章节头 */
.sec-head { max-width:680px; margin:0 auto 56px; text-align:center; }
.sec-head h2 { font-size:clamp(28px,3.4vw,42px); font-weight:700; margin:18px 0 14px; letter-spacing:.02em; }
.sec-head .lead { font-size:16px; }
.sec-head .eyebrow { justify-content:center; }

/* ============================================================
   统一导航栏 (与主站一致)
   ============================================================ */
.sol-navbar {
  position: sticky; top:0; z-index:1000;
  height: 72px;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow 0.3s ease;
}
.sol-navbar.scrolled { box-shadow: 0 4px 12px rgba(0,0,0,0.1); }
.sol-nav-container {
  max-width: 1400px; margin:0 auto; padding:0 32px; height:100%;
  display:flex; align-items:center; justify-content:space-between;
}
.sol-nav-brand { display:flex; align-items:center; gap:14px; text-decoration:none; }
.sol-nav-brand-icon {
  width:44px; height:44px; border-radius:12px;
  background: linear-gradient(135deg, var(--ink-900) 0%, var(--navy) 100%);
  display:flex; align-items:center; justify-content:center;
  color:#fff; font-size:20px;
  box-shadow: 0 4px 12px rgba(7,26,46,0.3);
}
.sol-nav-brand-text {
  font-family: var(--font-serif);
  font-size: 20px; font-weight:700;
  color: var(--ink-900); letter-spacing: 1px;
}
.sol-nav-menu { display:flex; align-items:center; gap:6px; list-style:none; }
.sol-nav-menu a {
  display:block; padding:10px 20px;
  color: var(--body); text-decoration:none;
  font-size:14px; font-weight:500;
  border-radius:8px; transition: all 0.3s ease;
}
.sol-nav-menu a:hover { color: var(--navy); background: var(--ice); }
.sol-nav-menu a.active { color: #fff; background: linear-gradient(135deg, var(--ink-900), var(--navy)); }
.sol-nav-actions { display:flex; align-items:center; gap:12px; }
.sol-nav-actions .sol-btn {
  font-size:13px; padding:8px 18px; border-radius:8px;
  text-decoration:none; font-weight:600; transition: all 0.3s ease;
  display:inline-flex; align-items:center; gap:6px;
}
.sol-btn-outline {
  border: 1px solid var(--navy); color: var(--navy);
  background: transparent;
}
.sol-btn-outline:hover { background: var(--navy); color:#fff; }
.sol-btn-solid {
  background: linear-gradient(135deg, var(--ink-900), var(--navy));
  color: #fff; border: none;
}
.sol-btn-solid:hover { transform: translateY(-1px); box-shadow: 0 6px 20px rgba(7,26,46,0.3); }
.sol-nav-mobile { display:none; background:none; border:none; font-size:22px; color:var(--ink-900); cursor:pointer; }

/* ============================================================
   Hero
   ============================================================ */
.hero {
  position:relative; overflow:hidden;
  background: radial-gradient(1200px 500px at 78% -10%, #0E3E72 0%, transparent 60%),
              radial-gradient(900px 480px at 8% 120%, #0A4B9E 0%, transparent 55%),
              linear-gradient(160deg,#071A2E 0%,#0B2540 55%,#0E2E4F 100%);
  color:#fff;
  margin-top: 0;
}
.hero::before{
  content:""; position:absolute; inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px);
  background-size:56px 56px;
  mask-image: radial-gradient(120% 120% at 30% 20%, #000 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(120% 120% at 30% 20%, #000 30%, transparent 80%);
}
.hero::after{
  content:""; position:absolute; inset:0; opacity:.5;
  background-image: radial-gradient(rgba(201,162,39,.5) 1px, transparent 1.4px);
  background-size:26px 26px;
  mix-blend-mode:overlay;
}
.hero-grid { position:relative; z-index:2; padding:88px 0 0; }
.hero-top { display:grid; grid-template-columns:1.15fr .85fr; gap:60px; align-items:center; }
.hero-eyebrow {
  display:inline-flex; align-items:center; gap:12px;
  font-family:var(--font-num); letter-spacing:.3em; text-transform:uppercase;
  font-size:13px; color:var(--gold-soft);
}
.hero-eyebrow::before{ content:""; width:40px; height:1px; background:var(--gold); }
.hero-title {
  font-size:clamp(34px,4.6vw,58px); font-weight:900; color:#fff;
  line-height:1.18; margin:22px 0 20px; letter-spacing:.01em;
}
.hero-title .accent { color:var(--gold-soft); }
.hero-sub { font-size:17px; color:rgba(255,255,255,.72); max-width:520px; font-weight:300; }
.hero-ctas { display:flex; gap:16px; margin-top:34px; flex-wrap:wrap; }
.btn {
  font-family:var(--font-num); text-transform:uppercase; letter-spacing:.14em; font-size:14px;
  padding:15px 30px; border-radius:9px; text-decoration:none; font-weight:600; transition:.28s;
  display:inline-flex; align-items:center; gap:10px;
}
.btn-gold { background:linear-gradient(135deg,var(--gold),#a8841d); color:#0b1a2b; box-shadow:0 10px 30px -8px rgba(201,162,39,.55); }
.btn-gold:hover { transform:translateY(-2px); box-shadow:0 16px 40px -8px rgba(201,162,39,.7); }
.btn-ghost { border:1px solid rgba(255,255,255,.35); color:#fff; background:rgba(255,255,255,.04); }
.btn-ghost:hover { background:rgba(255,255,255,.12); transform:translateY(-2px); }

/* hero 视觉图 */
.hero-visual { position:relative; }
.hero-visual .frame {
  position:relative; border-radius:18px; overflow:hidden;
  border:1px solid rgba(255,255,255,.16);
  box-shadow:0 40px 90px -30px rgba(0,0,0,.7);
}
.hero-visual .frame img { width:100%; display:block; aspect-ratio:16/11; object-fit:cover; }
.hero-visual .frame::after{
  content:""; position:absolute; inset:0;
  background:linear-gradient(200deg, rgba(7,26,46,.25), transparent 55%);
}
.hero-badge {
  position:absolute; z-index:3;
  background:rgba(7,26,46,.82); backdrop-filter:blur(8px);
  border:1px solid var(--gold-line); border-radius:12px; padding:14px 20px;
}
.hero-badge .n{ font-family:var(--font-num); font-size:26px; font-weight:700; color:var(--gold-soft); line-height:1; }
.hero-badge .t{ font-size:12px; color:rgba(255,255,255,.7); margin-top:4px; }
.hero-badge.b1{ top:-18px; right:-8px; }
.hero-badge.b2{ bottom:-20px; left:-10px; }
.hero-badge.b2 .n{ font-size:18px; }

/* Hero 指标带 */
.hero-stats {
  position:relative; z-index:3;
  display:grid; grid-template-columns:repeat(4,1fr); gap:0;
  margin-top:64px; border-top:1px solid rgba(255,255,255,.14);
}
.stat-cell { padding:30px 26px; border-left:1px solid rgba(255,255,255,.14); }
.stat-cell:first-child{ border-left:none; }
.stat-cell .v { font-family:var(--font-num); font-size:clamp(30px,3.2vw,44px); font-weight:700; color:#fff; line-height:1; }
.stat-cell .v i{ font-style:normal; font-size:.5em; color:var(--gold-soft); margin-right:3px; }
.stat-cell .l{ font-size:13.5px; color:rgba(255,255,255,.62); margin-top:10px; }

/* ============================================================
   通用卡片 / 分节
   ============================================================ */
.section-num {
  font-family:var(--font-num); font-size:14px; font-weight:700; letter-spacing:.26em; color:var(--gold);
}
.section-num em{ font-style:normal; color:var(--muted); }
.grid { display:grid; gap:24px; }

/* 板块背景切换 */
.section-white { background:var(--card); }
.section-tint { background:var(--ice); }

/* ============================================================
   洞察 / 痛点 卡片组
   ============================================================ */
.card {
  background:var(--card); border:1px solid var(--line);
  border-radius:var(--radius); padding:30px;
  box-shadow:var(--shadow-sm); position:relative; overflow:hidden;
  transition:transform .3s ease, box-shadow .3s ease;
}
.card:hover { transform:translateY(-4px); box-shadow:var(--shadow-md); }
.card .ico {
  width:52px; height:52px; border-radius:12px; margin-bottom:20px;
  display:grid; place-items:center; font-size:22px;
  background:linear-gradient(135deg,var(--ice), #fff);
  border:1px solid var(--line); color:var(--navy);
}
.card h4 { font-size:19px; margin-bottom:12px; font-weight:700; }
.card p { font-size:14px; color:var(--muted); }
.card .tag {
  position:absolute; top:24px; right:24px;
  font-family:var(--font-num); font-weight:700; font-size:13px; letter-spacing:.1em;
  color:var(--gold); border:1px solid var(--gold-line); padding:4px 12px; border-radius:30px;
}
.card.challenge{ border-top:3px solid var(--navy); }
.card.challenge .tag{ color:var(--red); border-color:rgba(200,16,46,.35); }

/* ============================================================
   KPI 蓝带
   ============================================================ */
.kpi-band {
  position:relative; overflow:hidden;
  background: linear-gradient(118deg,#051733 0%,#0A2C5E 46%,#0A4B9E 100%);
  border-radius:18px; padding:0; box-shadow:var(--shadow-lg);
}
.kpi-band::before{
  content:""; position:absolute; inset:0; opacity:.5;
  background-image: radial-gradient(rgba(201,162,39,.35) 1px, transparent 1.5px);
  background-size:26px 26px; mix-blend-mode:overlay;
}
.kpi-grid { display:grid; grid-template-columns:repeat(4,1fr); }
.kpi-cell { position:relative; z-index:2; padding:38px 30px; border-left:1px solid rgba(255,255,255,.14); }
.kpi-cell:first-child{ border-left:none; }
.kpi-cell .n{ font-family:var(--font-num); font-size:clamp(30px,3vw,42px); font-weight:700; color:#fff; line-height:1.1; }
.kpi-cell .n i{ font-style:normal; font-size:.5em; color:var(--gold-soft); margin-right:4px; }
.kpi-cell .t{ font-size:13.5px; color:rgba(255,255,255,.66); margin-top:10px; }
.kpi-cell .d{ font-size:12px; color:rgba(255,255,255,.45); margin-top:6px; line-height:1.6; }

/* ============================================================
   端到端流程
   ============================================================ */
.flow { position:relative; }
.flow::before{
  content:""; position:absolute; top:64px; left:32px; right:32px; height:2px;
  background:linear-gradient(90deg,var(--navy), var(--gold), var(--navy));
  opacity:.3;
}
.flow-grid { display:grid; grid-template-columns:repeat(6,1fr); gap:18px; }
.flow-step { text-align:center; position:relative; z-index:2; }
.flow-step .node {
  width:60px; height:60px; margin:0 auto 14px; border-radius:50%;
  display:grid; place-items:center; font-size:22px; color:#fff;
  background:linear-gradient(135deg,var(--navy-deep),var(--navy));
  border:3px solid #fff; box-shadow:var(--shadow-md);
}
.flow-step .no{ font-family:var(--font-num); font-weight:700; font-size:12px; letter-spacing:.14em; color:var(--gold); }
.flow-step h5{ font-size:15px; color:var(--ink-text); margin:6px 0 8px; font-family:var(--font-sans); font-weight:700; }
.flow-step .sub{ font-size:12.5px; color:var(--muted); line-height:1.7; }

/* 双栏方案卡 */
.split-2 { display:grid; grid-template-columns:1fr 1fr; gap:24px; margin-top:36px; }
.opt-card {
  background:var(--card); border:1px solid var(--line); border-radius:var(--radius-lg);
  overflow:hidden; box-shadow:var(--shadow-sm); display:flex; flex-direction:column;
}
.opt-head { display:flex; align-items:center; gap:14px; padding:26px 28px 18px; }
.opt-head .ico{ width:48px;height:48px;border-radius:12px;display:grid;place-items:center;font-size:21px;
  background:linear-gradient(135deg,var(--ice),#fff);border:1px solid var(--line);color:var(--navy);}
.opt-head h4{ font-size:20px; font-weight:700; }
.opt-head .badge{ font-family:var(--font-num); font-size:12px; letter-spacing:.1em; color:var(--gold);
  border:1px solid var(--gold-line); padding:3px 10px; border-radius:30px; }
.opt-body{ padding:0 28px 24px; flex:1; }
.opt-body ul{ list-style:none; }
.opt-body li{
  position:relative; padding:8px 0 8px 24px; font-size:14px; color:var(--body);
  border-bottom:1px dashed var(--line);
}
.opt-body li::before{ content:""; position:absolute; left:0; top:16px; width:9px; height:9px;
  background:var(--gold); border-radius:50%; box-shadow:0 0 0 4px rgba(201,162,39,.16); }
.opt-foot{ margin-top:auto; padding:16px 28px; background:var(--ice);
  font-size:13px; color:var(--navy); font-weight:500; }
.opt-foot b{ font-family:var(--font-sans); color:var(--ink-text); }

/* ============================================================
   数据表
   ============================================================ */
.table-card{ background:var(--card); border:1px solid var(--line); border-radius:var(--radius-lg);
  overflow:hidden; box-shadow:var(--shadow-sm); }
.table-wrap{ overflow-x:auto; }
table { width:100%; border-collapse:collapse; min-width:640px; }
thead th {
  background:var(--ink-900); color:#fff; font-weight:500; text-align:left;
  padding:18px 24px; font-size:14px;
  font-family:var(--font-num); text-transform:uppercase; letter-spacing:.12em;
}
tbody td { padding:22px 24px; font-size:14px; color:var(--body); border-bottom:1px solid var(--line); vertical-align:top; }
tbody tr:last-child td{ border-bottom:none; }
tbody tr{ transition:background .2s; }
tbody tr:hover{ background:var(--ice); }
td:first-child{ font-weight:700; color:var(--ink-text); white-space:nowrap; }
.table-note{ padding:18px 24px; background:var(--ice); color:var(--muted); font-size:13px; }
.table-note::before{ content:"\25C8 "; color:var(--gold); }

/* ============================================================
   案例
   ============================================================ */
.case-card{
  background:var(--card); border:1px solid var(--line); border-radius:var(--radius-lg);
  overflow:hidden; box-shadow:var(--shadow-sm); display:flex; flex-direction:column;
}
.case-media{ position:relative; overflow:hidden; aspect-ratio:16/9; }
.case-media img{ width:100%; height:100%; object-fit:cover; transition:transform .6s ease; }
.case-card:hover .case-media img{ transform:scale(1.05); }
.case-media::after{ content:""; position:absolute; inset:0;
  background:linear-gradient(180deg, transparent 40%, rgba(7,26,46,.55)); }
.case-media .no{
  position:absolute; top:18px; left:18px; z-index:2;
  font-family:var(--font-num); font-weight:700; font-size:12px; letter-spacing:.14em;
  color:#fff; background:rgba(7,26,46,.6); border:1px solid rgba(255,255,255,.3);
  padding:6px 13px; border-radius:30px; backdrop-filter:blur(4px);
}
.case-body{ padding:26px 28px; display:flex; flex-direction:column; flex:1; }
.case-title{ font-size:20px; font-weight:700; color:var(--ink-text); margin-bottom:4px; }
.case-sub{ font-family:var(--font-num); color:var(--gold); font-size:13.5px; letter-spacing:.05em; margin-bottom:16px; }
.case-meta{ display:flex; gap:22px; margin-bottom:18px; }
.case-meta .m .v{ font-family:var(--font-num); font-size:22px; font-weight:700; color:var(--navy); line-height:1; }
.case-meta .m .t{ font-size:12px; color:var(--muted); margin-top:5px; }
.case-desc{ font-size:14px; color:var(--muted); flex:1; }
.case-desc p{ margin-bottom:8px; }
.case-tags{ margin-top:18px; display:flex; flex-wrap:wrap; gap:8px; }
.case-tags span{ font-size:12.5px; color:var(--navy); background:var(--ice);
  border:1px solid var(--line); padding:5px 12px; border-radius:30px; }

/* ============================================================
   为什么选我们
   ============================================================ */
.why-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:22px; }
.why-item{ text-align:center; padding:34px 26px; background:var(--card);
  border:1px solid var(--line); border-radius:var(--radius); transition:.3s; }
.why-item:hover{ transform:translateY(-4px); box-shadow:var(--shadow-md); }
.why-item .ico{ width:60px;height:60px;margin:0 auto 18px;border-radius:16px;display:grid;place-items:center;font-size:24px;
  background:linear-gradient(135deg,var(--ink-900),var(--navy)); color:var(--gold-soft); box-shadow:var(--shadow-sm); }
.why-item h4{ font-size:18px; margin-bottom:10px; font-weight:700; }
.why-item p{ font-size:13.5px; color:var(--muted); }

/* ============================================================
   CTA 收尾
   ============================================================ */
.cta-band{
  position:relative; overflow:hidden; border-radius:22px; padding:64px 56px;
  background: linear-gradient(120deg,#071A2E,#0A2C5E 55%,#0A4B9E);
  color:#fff; box-shadow:var(--shadow-lg); text-align:center;
}
.cta-band::before{
  content:""; position:absolute; inset:0; opacity:.55;
  background-image: radial-gradient(rgba(201,162,39,.4) 1px, transparent 1.5px);
  background-size:24px 24px; mix-blend-mode:overlay;
}
.cta-band h3{ color:#fff; font-size:clamp(26px,3.4vw,40px); font-weight:900; margin-bottom:16px; position:relative; z-index:2; }
.cta-band h3 .accent{ color:var(--gold-soft); }
.cta-band p{ color:rgba(255,255,255,.72); max-width:620px; margin:0 auto 30px; position:relative; z-index:2; font-weight:300; }
.cta-band .btn{ position:relative; z-index:2; }
.cta-contacts{ display:flex; justify-content:center; gap:40px; margin-top:26px; flex-wrap:wrap; position:relative; z-index:2; }
.cta-contacts .org{ font-family:var(--font-serif); color:#fff; font-weight:600; }
.cta-contacts .dept{ font-size:12.5px; color:rgba(255,255,255,.55); margin-top:3px; }
.cta-contacts .row{ display:flex; gap:8px; align-items:center; font-size:14px; color:rgba(255,255,255,.85); }
.cta-contacts .row .k{ font-family:var(--font-num); letter-spacing:.06em; color:var(--gold-soft); }

/* ============================================================
   页脚
   ============================================================ */
.sol-footer{ background:var(--ink-950); color:rgba(255,255,255,.6); padding:56px 0 0; margin-top:96px; }
.sol-footer-top{ display:grid; grid-template-columns:1.4fr 1fr 1fr 1.2fr; gap:44px; padding-bottom:44px; }
.sol-footer h5{ color:#fff; font-family:var(--font-sans); font-size:15px; margin-bottom:18px; font-weight:700; letter-spacing:.06em; }
.sol-footer .about-txt{ font-size:13.5px; line-height:1.9; color:rgba(255,255,255,.55); margin-top:18px; max-width:360px; }
.footer-links{ list-style:none; }
.footer-links li{ margin-bottom:11px; }
.footer-links a{ color:rgba(255,255,255,.6); text-decoration:none; font-size:13.5px; transition:.2s; }
.footer-links a:hover{ color:var(--gold-soft); }
.footer-contact{ font-size:13.5px; }
.footer-contact div{ margin-bottom:12px; }
.footer-contact .c{ color:rgba(255,255,255,.42); font-size:12.5px; display:block; margin-bottom:2px; }
.sol-footer-bar{ border-top:1px solid rgba(255,255,255,.1); padding:20px 0; font-size:12.5px; color:rgba(255,255,255,.4); display:flex; justify-content:space-between; flex-wrap:wrap; gap:10px; }

/* ============================================================
   方案导航 tab (方案间跳转)
   ============================================================ */
.solution-switch{ margin-top:-34px; position:relative; z-index:20; }
.solution-switch .inner{
  background:var(--card); border:1px solid var(--line); border-radius:14px;
  box-shadow:var(--shadow-md); padding:10px; display:grid; grid-template-columns:repeat(3,1fr); gap:8px;
  max-width:760px; margin:0 auto;
}
.solution-switch a{
  text-decoration:none; padding:15px 18px; border-radius:10px; text-align:center; transition:.25s;
  border:1px solid transparent;
}
.solution-switch a .nm{ font-family:var(--font-sans); font-weight:700; font-size:14.5px; color:var(--ink-text); }
.solution-switch a .en{ font-family:var(--font-num); text-transform:uppercase; font-size:11px; letter-spacing:.18em; color:var(--muted); margin-top:3px; }
.solution-switch a:hover{ background:var(--ice); }
.solution-switch a.active{ background:linear-gradient(135deg,var(--ink-900),var(--navy)); }
.solution-switch a.active .nm{ color:#fff; }
.solution-switch a.active .en{ color:var(--gold-soft); }

/* 锚点内容节标题（详情页章节头，左对齐） */
.sec-head.left{ text-align:left; margin:0 0 44px; }
.sec-head.left .eyebrow{ justify-content:flex-start; }

/* ============================================================
   总览页卡片
   ============================================================ */
.sol-card{
  position:relative; border-radius:20px; overflow:hidden; background:var(--card);
  border:1px solid var(--line); box-shadow:var(--shadow-sm); transition:.35s; text-decoration:none;
  display:flex; flex-direction:column;
}
.sol-card:hover{ transform:translateY(-6px); box-shadow:var(--shadow-lg); }
.sol-card .media{ position:relative; aspect-ratio:16/10; overflow:hidden; }
.sol-card .media img{ width:100%;height:100%;object-fit:cover;transition:.6s; }
.sol-card:hover .media img{ transform:scale(1.06); }
.sol-card .media::after{ content:""; position:absolute; inset:0; background:linear-gradient(200deg,transparent 30%, rgba(7,26,46,.55)); }
.sol-card .media .no{
  position:absolute; left:22px; top:20px; z-index:2; font-family:var(--font-num); font-weight:700;
  font-size:12px; letter-spacing:.16em; color:#fff; background:rgba(7,26,46,.6);
  border:1px solid rgba(255,255,255,.3); padding:5px 13px; border-radius:30px; backdrop-filter:blur(4px);
}
.sol-card .media .chip{
  position:absolute; right:20px; bottom:18px; z-index:2; font-family:var(--font-num);
  font-size:12px; letter-spacing:.1em; color:var(--gold-soft); background:rgba(7,26,46,.7);
  border:1px solid var(--gold-line); padding:6px 14px; border-radius:30px; backdrop-filter:blur(4px);
}
.sol-card .body{ padding:28px 28px 24px; flex:1; display:flex; flex-direction:column; }
.sol-card h3{ font-size:22px; font-weight:700; margin-bottom:12px; }
.sol-card .scene{ font-family:var(--font-num); color:var(--navy); font-size:13px; letter-spacing:.06em; margin-bottom:12px; }
.sol-card p{ font-size:14px; color:var(--muted); flex:1; }
.sol-card .go{
  margin-top:20px; display:inline-flex; align-items:center; gap:8px; font-family:var(--font-num);
  text-transform:uppercase; letter-spacing:.14em; font-size:13px; font-weight:600; color:var(--gold);
}
.sol-card .go .arr{ transition:transform .25s; }
.sol-card:hover .go .arr{ transform:translateX(6px); }

/* ============================================================
   动画
   ============================================================ */
.reveal{ opacity:0; transform:translateY(30px); transition:opacity .7s ease, transform .7s ease; }
.reveal.in{ opacity:1; transform:none; }
.reveal.d1{ transition-delay:.08s; }
.reveal.d2{ transition-delay:.16s; }
.reveal.d3{ transition-delay:.24s; }

@keyframes floaty { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-8px)} }
.floaty{ animation:floaty 5s ease-in-out infinite; }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width:1024px){
  .hero-top{ grid-template-columns:1fr; gap:70px; }
  .hero-visual{ max-width:600px; }
  .hero-stats{ grid-template-columns:repeat(2,1fr); }
  .stat-cell{ border-top:1px solid rgba(255,255,255,.14); border-left:none; }
  .flow-grid{ grid-template-columns:repeat(3,1fr); gap:28px 16px; }
  .flow::before{ display:none; }
  .kpi-grid{ grid-template-columns:repeat(2,1fr); }
  .kpi-cell{ border-left:none; border-top:1px solid rgba(255,255,255,.14); }
  .why-grid{ grid-template-columns:repeat(2,1fr); }
  .split-2{ grid-template-columns:1fr; }
  .sol-footer-top{ grid-template-columns:1fr 1fr; }
  .sol-nav-menu{ display:none; }
  .sol-nav-mobile{ display:block; }
}
@media (max-width:640px){
  .wrap{ padding:0 20px; }
  .hero-grid{ padding-top:56px; }
  .hero-stats{ grid-template-columns:1fr; }
  .why-grid{ grid-template-columns:1fr; }
  .sol-footer-top{ grid-template-columns:1fr; }
  .cta-band{ padding:48px 28px; }
  .flow-grid{ grid-template-columns:1fr 1fr; }
  .solution-switch .inner{ grid-template-columns:1fr; }
  .sol-nav-actions .sol-btn span{ display:none; }
}