:root {
  --navy:#0c2340;
  --gold:#b8860b;
  --ink:#1e293b;
  --muted:#64748b;
  --line:#e5e7eb;
  --bg:#f7f8fb;
  --white:#fff;
  --radius:18px;
  --shadow:0 14px 36px rgba(12,35,64,.09);
}

* { box-sizing:border-box; }
html { -webkit-text-size-adjust:100%; }
body {
  margin:0;
  font-family:Inter,"Source Sans 3","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
  color:var(--ink);
  line-height:1.65;
  background:#fff;
  overflow-x:hidden;
}
a { color:inherit; text-decoration:none; }
p { margin:0 0 1rem; }
ul { margin:0; padding:0; list-style:none; }
h1,h2,h3,h4 { margin:0 0 1rem; color:var(--navy); line-height:1.18; }
h1,h2 { font-family:Georgia,"Times New Roman","Noto Serif SC",serif; }
h1 { font-size:clamp(2.1rem,5vw,4.6rem); letter-spacing:-.035em; }
h2 { font-size:clamp(1.6rem,3vw,2.9rem); letter-spacing:-.02em; }
h3 { font-size:1.2rem; }

.container { width:min(1160px, calc(100% - 42px)); margin:0 auto; }
.lang-en .zh { display:none !important; }
.lang-zh .en { display:none !important; }

.topbar { background:var(--navy); color:rgba(255,255,255,.88); font-size:.82rem; }
.topbar-inner { min-height:38px; display:flex; align-items:center; justify-content:space-between; gap:18px; }
.topbar a { color:rgba(255,255,255,.92); }

.site-header {
  position:sticky;
  top:0;
  z-index:50;
  background:rgba(255,255,255,.97);
  border-bottom:1px solid rgba(12,35,64,.08);
  backdrop-filter:blur(12px);
}
.header-inner {
  min-height:76px;
  display:grid;
  grid-template-columns:auto 1fr auto;
  align-items:center;
  gap:18px;
}
.brand { display:flex; align-items:center; min-width:0; }
.brand img { display:block; height:46px; width:auto; max-width:220px; object-fit:contain; }

.desktop-nav ul { display:flex; justify-content:center; align-items:center; gap:4px; flex-wrap:nowrap; }
.desktop-nav a {
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:8px 8px;
  border-radius:999px;
  border:1px solid transparent;
  color:rgba(12,35,64,.82);
  font-size:.72rem;
  font-weight:760;
  letter-spacing:.025em;
  line-height:1;
  white-space:nowrap;
  text-transform:uppercase;
}
.lang-zh .desktop-nav a {
  font-size:.82rem;
  letter-spacing:.02em;
  text-transform:none;
  font-family:"Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
}
.desktop-nav a:hover,
.desktop-nav a.active {
  background:rgba(12,35,64,.06);
  border-color:rgba(12,35,64,.12);
  color:var(--navy);
}

.header-actions { display:flex; align-items:center; justify-content:flex-end; gap:8px; }
button { font:inherit; cursor:pointer; }
.lang-toggle,.menu-toggle {
  border:1px solid rgba(12,35,64,.18);
  background:#fff;
  color:var(--navy);
  border-radius:999px;
  padding:8px 11px;
  font-size:.76rem;
  font-weight:800;
}
.menu-toggle { display:none; }

.mobile-nav { display:none; border-top:1px solid rgba(12,35,64,.08); background:#fff; box-shadow:0 15px 30px rgba(12,35,64,.09); }
.mobile-nav.open { display:block; }
.mobile-nav ul { display:grid; grid-template-columns:repeat(4, minmax(0,1fr)); gap:10px; padding:14px 0 18px; }
.mobile-nav a {
  display:flex;
  justify-content:center;
  align-items:center;
  min-height:42px;
  padding:10px 8px;
  border:1px solid rgba(12,35,64,.10);
  border-radius:12px;
  background:#f8fafc;
  color:var(--navy);
  font-weight:800;
  font-size:.78rem;
  text-align:center;
  line-height:1.25;
}
.mobile-nav a.active { background:rgba(184,134,11,.10); border-color:rgba(184,134,11,.25); }

.hero {
  padding:72px 0 64px;
  background:
    radial-gradient(circle at 80% 15%, rgba(184,134,11,.14), transparent 30%),
    linear-gradient(135deg,#fff 0%,#f6f8fc 60%,#eef2f7 100%);
}
.hero-grid { display:grid; grid-template-columns:minmax(0,1.1fr) minmax(300px,.85fr); gap:42px; align-items:center; }
.hero-logo { display:block; width:min(460px,100%); height:auto; margin-bottom:18px; }
.kicker {
  display:inline-flex;
  color:var(--gold);
  text-transform:uppercase;
  letter-spacing:.14em;
  font-weight:850;
  font-size:.76rem;
  margin-bottom:14px;
}
.lead { font-size:1.15rem; color:var(--muted); max-width:690px; }
.hero-buttons { display:flex; flex-wrap:wrap; gap:14px; margin-top:28px; }
.btn { display:inline-flex; justify-content:center; align-items:center; border-radius:999px; padding:13px 20px; font-weight:850; border:1px solid transparent; }
.btn.primary { background:var(--navy); color:#fff; box-shadow:0 12px 28px rgba(12,35,64,.18); }
.btn.secondary { background:#fff; color:var(--navy); border-color:rgba(12,35,64,.18); }

.access-panel,.card,.quote-box,.note-box,.contact-card,.access-card-mobile {
  background:#fff;
  border:1px solid rgba(12,35,64,.10);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
}
.access-panel,.card,.quote-box,.note-box,.contact-card { padding:26px; }

.route-list { display:grid; gap:12px; }
.route-list div,.idea-list div {
  display:flex;
  gap:14px;
  align-items:flex-start;
  padding:14px 15px;
  border:1px solid var(--line);
  border-radius:14px;
  background:#f8fafc;
  font-weight:700;
}
.route-list b,.idea-list b {
  flex:0 0 auto;
  color:var(--gold);
  letter-spacing:.08em;
  font-size:.86rem;
}

.section { padding:76px 0; }
.section.light { background:var(--bg); }
.section-head { margin-bottom:28px; max-width:780px; }
.two-col,.card-grid { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:24px; }
.split { display:grid; grid-template-columns:minmax(0,1fr) minmax(280px,.8fr); gap:32px; align-items:start; }
.quote-box { border-left:5px solid var(--gold); font-family:Georgia,"Times New Roman",serif; font-size:1.28rem; color:var(--navy); }
.page-hero { padding:66px 0 48px; background:linear-gradient(135deg,#f8fafc 0%,#fff 56%,#f2f5fa 100%); border-bottom:1px solid var(--line); }
.page-hero p { max-width:800px; color:var(--muted); font-size:1.08rem; }
.content { max-width:980px; }
.content h2 { margin-top:26px; }

.idea-list { display:grid; gap:14px; margin:24px 0; }

.model-box {
  margin-top:26px;
  padding:24px;
  border-radius:var(--radius);
  background:var(--navy);
  color:#fff;
  font-weight:750;
  overflow-wrap:anywhere;
}
.model-box.stacked { display:grid; gap:10px; }

.desktop-table {
  overflow-x:auto;
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  background:#fff;
}
table { border-collapse:collapse; width:100%; min-width:820px; }
th,td { text-align:left; padding:18px; border-bottom:1px solid var(--line); vertical-align:top; }
th { background:var(--navy); color:#fff; font-size:.9rem; }
td:first-child { font-weight:850; color:var(--navy); }
.mobile-access-list { display:none; }

.note-box { margin-top:24px; }
.check-list { display:grid; gap:10px; }
.check-list li { position:relative; padding-left:24px; }
.check-list li::before { content:"•"; position:absolute; left:4px; color:var(--gold); font-weight:900; }
.email-link { display:inline-block; color:var(--navy); font-weight:900; overflow-wrap:anywhere; margin:4px 0 16px; }

.footer { background:var(--navy); color:rgba(255,255,255,.80); padding:46px 0 24px; }
.footer h3,.footer h4 { color:#fff; }
.footer h3 { font-family:Georgia,"Times New Roman",serif; font-size:1.24rem; }
.footer-grid { display:grid; grid-template-columns:minmax(0,1.4fr) minmax(170px,.8fr) minmax(200px,.8fr); gap:30px; }
.footer a { display:block; color:rgba(255,255,255,.90); margin:7px 0; overflow-wrap:anywhere; }
.footer-bottom { margin-top:30px; padding-top:18px; border-top:1px solid rgba(255,255,255,.16); text-align:center; font-size:.86rem; }

@media (max-width:1280px) {
  .header-inner { grid-template-columns:minmax(0,1fr) auto; }
  .desktop-nav { display:none; }
  .menu-toggle { display:inline-flex; }
  .brand img { height:44px; max-width:225px; }
  .hero-grid { grid-template-columns:1fr; }
  .access-panel { max-width:700px; }
}

@media (max-width:760px) {
  .container { width:calc(100% - 28px); }
  .topbar { display:none; }
  .header-inner { min-height:64px; gap:10px; }
  .brand img { height:36px; max-width:158px; }
  .header-actions { gap:6px; }
  .lang-toggle,.menu-toggle { padding:7px 9px; font-size:.72rem; }

  .mobile-nav ul { grid-template-columns:1fr 1fr; gap:8px; padding:12px 0 14px; }
  .mobile-nav a { min-height:42px; padding:9px 8px; font-size:.76rem; }

  .hero { padding:38px 0 44px; }
  .hero-logo { display:none; }
  h1 { font-size:clamp(2.02rem,9vw,3rem); }
  h2 { font-size:clamp(1.5rem,7vw,2.15rem); }
  .lead,.page-hero p { font-size:1rem; }
  .hero-buttons { flex-direction:column; }
  .btn { width:100%; padding:13px 16px; }

  .section { padding:48px 0; }
  .page-hero { padding:44px 0 34px; }
  .two-col,.card-grid,.split,.footer-grid { grid-template-columns:1fr; gap:18px; }
  .access-panel,.card,.quote-box,.note-box,.contact-card,.model-box { padding:19px; border-radius:16px; }
  .route-list div,.idea-list div { padding:13px 14px; }
  .quote-box { font-size:1.08rem; }

  .desktop-table { display:none; }
  .mobile-access-list { display:grid; gap:14px; }
  .access-card-mobile { padding:18px; }
  .access-card-mobile h3 { margin-bottom:14px; }
  .access-card-mobile div { border-top:1px solid var(--line); padding-top:10px; margin-top:10px; }
  .access-card-mobile strong { display:block; color:var(--gold); font-size:.82rem; margin-bottom:3px; }
  .access-card-mobile p { margin:0; }
}

@media (max-width:420px) {
  .container { width:calc(100% - 22px); }
  .brand img { height:32px; max-width:138px; }
  .lang-toggle,.menu-toggle { padding:7px 8px; font-size:.68rem; }
  .mobile-nav ul { grid-template-columns:1fr; }
}