:root {
  --ink: #071a26;
  --ink-2: #0d2b3c;
  --sea: #0c5067;
  --aqua: #35c2bd;
  --signal: #ffb454;
  --paper: #f4f7f7;
  --white: #ffffff;
  --muted: #63747c;
  --line: rgba(7, 26, 38, 0.14);
  --shadow: 0 22px 60px rgba(4, 24, 36, 0.13);
  --radius: 18px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.65;
}
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }

.container { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }
.eyebrow {
  margin: 0 0 14px;
  color: var(--sea);
  font-size: .78rem;
  font-weight: 800;
  letter-spacing: .14em;
  text-transform: uppercase;
}
.section { padding: 92px 0; }
.section--white { background: var(--white); }
.section--dark { color: var(--white); background: var(--ink); }
.section-head { display: grid; grid-template-columns: .9fr 1.1fr; gap: 70px; align-items: end; margin-bottom: 42px; }
.section-head h2 { margin: 0; max-width: 650px; font-size: clamp(2rem, 4vw, 3.5rem); line-height: 1.06; letter-spacing: -.035em; }
.section-head p { margin: 0; color: var(--muted); font-size: 1.05rem; }
.section--dark .section-head p { color: #afc3cc; }

.site-header {
  position: sticky;
  z-index: 50;
  top: 0;
  border-bottom: 1px solid rgba(255,255,255,.12);
  background: rgba(7, 26, 38, .94);
  backdrop-filter: blur(14px);
}
.nav-wrap { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 11px; color: var(--white); font-size: 1.12rem; font-weight: 800; letter-spacing: .015em; }
.brand-mark { position: relative; width: 34px; height: 34px; border: 1px solid rgba(255,255,255,.4); border-radius: 50%; }
.brand-mark::before, .brand-mark::after { content: ""; position: absolute; left: 7px; right: 7px; height: 2px; background: var(--aqua); transform: rotate(-28deg); }
.brand-mark::before { top: 12px; }
.brand-mark::after { top: 19px; background: var(--signal); }
.nav-links { display: flex; align-items: center; gap: 25px; color: #cfdae0; font-size: .92rem; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--white); }
.nav-actions { display: flex; align-items: center; gap: 10px; }
.lang-toggle { border: 1px solid rgba(255,255,255,.22); border-radius: 999px; padding: 8px 11px; color: var(--white); background: transparent; cursor: pointer; }
.menu-toggle { display: none; border: 0; padding: 8px; color: var(--white); background: transparent; font-size: 1.35rem; cursor: pointer; }

.button { display: inline-flex; min-height: 46px; align-items: center; justify-content: center; gap: 9px; border: 1px solid transparent; border-radius: 999px; padding: 10px 20px; font-weight: 750; cursor: pointer; transition: transform .18s ease, background .18s ease; }
.button:hover { transform: translateY(-2px); }
.button--primary { color: var(--ink); background: var(--signal); }
.button--secondary { color: var(--white); border-color: rgba(255,255,255,.34); background: rgba(255,255,255,.06); }
.button--ink { color: var(--white); background: var(--ink); }

.hero {
  position: relative;
  overflow: hidden;
  min-height: 730px;
  color: var(--white);
  background:
    radial-gradient(circle at 76% 18%, rgba(53,194,189,.2), transparent 28%),
    linear-gradient(115deg, #061923 0%, #0b3447 62%, #0c5067 100%);
}
.hero::before {
  content: "";
  position: absolute; inset: 0;
  opacity: .13;
  background-image: linear-gradient(rgba(255,255,255,.14) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.14) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: linear-gradient(to right, transparent, #000 35%, #000);
}
.hero-grid { position: relative; display: grid; grid-template-columns: 1.08fr .92fr; gap: 70px; align-items: center; padding: 105px 0 92px; }
.hero h1 { margin: 0; max-width: 750px; font-size: clamp(3rem, 6.2vw, 5.65rem); line-height: .96; letter-spacing: -.055em; }
.hero h1 span { color: var(--aqua); }
.hero-copy > p { max-width: 660px; margin: 30px 0; color: #c4d5dc; font-size: 1.12rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.trust-row { display: flex; flex-wrap: wrap; gap: 11px 20px; margin-top: 34px; color: #9db4bf; font-size: .85rem; }
.trust-row span::before { content: "•"; margin-right: 8px; color: var(--signal); }

.route-card { position: relative; min-height: 450px; border: 1px solid rgba(255,255,255,.16); border-radius: 28px; padding: 30px; background: rgba(4,20,30,.42); box-shadow: var(--shadow); backdrop-filter: blur(12px); }
.route-card h2 { margin: 0; font-size: .95rem; letter-spacing: .08em; text-transform: uppercase; }
.route-map { position: relative; height: 280px; margin-top: 30px; }
.route-line { position: absolute; left: 16%; top: 20%; width: 68%; height: 58%; border-right: 2px dashed rgba(53,194,189,.55); border-bottom: 2px dashed rgba(53,194,189,.55); border-radius: 0 0 70% 0; transform: rotate(4deg); }
.port { position: absolute; display: flex; align-items: center; gap: 10px; font-size: .86rem; font-weight: 750; }
.port::before { content: ""; width: 12px; height: 12px; border: 3px solid var(--ink-2); border-radius: 50%; background: var(--signal); box-shadow: 0 0 0 2px var(--signal); }
.port--cn { left: 4%; top: 8%; }
.port--sg { right: 6%; bottom: 30%; }
.port--bt { right: 23%; bottom: 6%; }
.port--jb { right: 0; bottom: 7%; }
.route-note { position: absolute; left: 7%; bottom: 17%; width: 190px; color: #a9bec7; font-size: .82rem; }
.route-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.route-stats div { border-top: 1px solid rgba(255,255,255,.15); padding-top: 13px; }
.route-stats strong { display: block; color: var(--aqua); font-size: 1.2rem; }
.route-stats small { color: #9fb4bd; }

.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.product-card { display: flex; min-height: 315px; flex-direction: column; border: 1px solid var(--line); border-radius: var(--radius); padding: 25px; background: var(--white); transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease; }
.product-card:hover { transform: translateY(-5px); border-color: rgba(12,80,103,.4); box-shadow: var(--shadow); }
.product-no { color: var(--sea); font-size: .78rem; font-weight: 850; letter-spacing: .12em; }
.product-card h3 { margin: 28px 0 10px; font-size: 1.36rem; line-height: 1.2; }
.product-card p { margin: 0 0 20px; color: var(--muted); }
.product-tags { display: flex; flex-wrap: wrap; gap: 7px; margin-top: auto; }
.tag { border-radius: 999px; padding: 5px 9px; color: var(--sea); background: #e7f1f3; font-size: .74rem; font-weight: 700; }
.text-link { display: inline-flex; align-items: center; gap: 7px; margin-top: 22px; color: var(--sea); font-weight: 800; }

.capability-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; border: 1px solid rgba(255,255,255,.12); background: rgba(255,255,255,.12); }
.capability { min-height: 245px; padding: 28px; background: var(--ink); }
.capability b { display: block; color: var(--signal); font-size: .8rem; letter-spacing: .1em; }
.capability h3 { margin: 42px 0 10px; font-size: 1.15rem; }
.capability p { margin: 0; color: #9fb5bf; font-size: .91rem; }

.steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; counter-reset: steps; }
.step { counter-increment: steps; border-top: 2px solid var(--ink); padding: 19px 8px 0 0; }
.step::before { content: "0" counter(steps); display: block; margin-bottom: 26px; color: var(--sea); font-size: .8rem; font-weight: 850; letter-spacing: .1em; }
.step h3 { margin: 0 0 7px; font-size: 1rem; }
.step p { margin: 0; color: var(--muted); font-size: .88rem; }

.cta-band { display: grid; grid-template-columns: 1.3fr .7fr; gap: 50px; align-items: center; border-radius: 26px; padding: 48px; color: var(--white); background: var(--sea); }
.cta-band h2 { margin: 0 0 12px; font-size: clamp(1.8rem, 4vw, 3.2rem); line-height: 1.08; }
.cta-band p { margin: 0; color: #c8e3e7; }
.cta-band .button { justify-self: end; }

.page-hero { padding: 84px 0 68px; color: var(--white); background: linear-gradient(120deg, var(--ink), var(--sea)); }
.page-hero h1 { margin: 0; max-width: 820px; font-size: clamp(2.7rem, 6vw, 5rem); line-height: 1; letter-spacing: -.045em; }
.page-hero p { max-width: 720px; margin: 24px 0 0; color: #c6d8df; font-size: 1.1rem; }
.anchor-nav { position: sticky; z-index: 20; top: 76px; overflow-x: auto; border-bottom: 1px solid var(--line); background: rgba(255,255,255,.95); backdrop-filter: blur(12px); }
.anchor-nav .container { display: flex; gap: 28px; padding-top: 14px; padding-bottom: 14px; white-space: nowrap; font-size: .87rem; font-weight: 750; }
.anchor-nav a:hover { color: var(--sea); }

.catalog-item { display: grid; grid-template-columns: .72fr 1.28fr; gap: 60px; padding: 70px 0; border-bottom: 1px solid var(--line); scroll-margin-top: 140px; }
.catalog-item:last-child { border-bottom: 0; }
.catalog-id { color: var(--sea); font-size: .78rem; font-weight: 850; letter-spacing: .12em; }
.catalog-item h2 { margin: 14px 0; font-size: clamp(1.8rem, 4vw, 3rem); line-height: 1.07; }
.catalog-item .lead { color: var(--muted); font-size: 1.02rem; }
.spec-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.spec { border: 1px solid var(--line); border-radius: 14px; padding: 18px; background: var(--white); }
.spec b { display: block; margin-bottom: 7px; font-size: .82rem; }
.spec span { color: var(--muted); font-size: .88rem; }
.notice { margin-top: 18px; border-left: 3px solid var(--signal); padding: 12px 16px; color: var(--muted); background: #fff8ed; font-size: .87rem; }

.split { display: grid; grid-template-columns: 1fr 1fr; gap: 70px; }
.list-clean { margin: 0; padding: 0; list-style: none; }
.list-clean li { border-bottom: 1px solid var(--line); padding: 16px 0; }
.list-clean b { display: block; }
.list-clean span { color: var(--muted); font-size: .9rem; }

.form-card { border: 1px solid var(--line); border-radius: 22px; padding: 32px; background: var(--white); box-shadow: var(--shadow); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field { display: flex; flex-direction: column; gap: 7px; }
.field--full { grid-column: 1 / -1; }
.field label { font-size: .86rem; font-weight: 750; }
.field input, .field select, .field textarea { width: 100%; border: 1px solid #c8d2d6; border-radius: 10px; padding: 12px 13px; color: var(--ink); background: var(--white); }
.field textarea { min-height: 130px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { outline: 3px solid rgba(53,194,189,.2); border-color: var(--sea); }
.form-help { margin: 14px 0 0; color: var(--muted); font-size: .82rem; }
.status { min-height: 24px; margin-top: 12px; color: var(--sea); font-weight: 750; }

.site-footer { color: #aebec5; background: #04131c; }
.footer-grid { display: grid; grid-template-columns: 1.1fr .7fr .7fr; gap: 50px; padding: 62px 0 38px; }
.footer-grid h3 { margin: 0 0 13px; color: var(--white); font-size: .9rem; }
.footer-grid p { max-width: 460px; margin: 16px 0 0; font-size: .9rem; }
.footer-links { display: grid; gap: 10px; font-size: .9rem; }
.footer-base { display: flex; justify-content: space-between; gap: 24px; border-top: 1px solid rgba(255,255,255,.1); padding: 22px 0 30px; font-size: .78rem; }

[data-lang="zh"] .en-only, [data-lang="en"] .zh-only { display: none !important; }

@media (max-width: 900px) {
  .nav-links { position: fixed; left: 0; right: 0; top: 76px; display: none; flex-direction: column; align-items: stretch; gap: 0; padding: 12px 20px 22px; background: var(--ink); }
  .nav-links.is-open { display: flex; }
  .nav-links a { border-bottom: 1px solid rgba(255,255,255,.1); padding: 14px 0; }
  .menu-toggle { display: block; }
  .nav-actions .button { display: none; }
  .hero-grid, .section-head, .catalog-item, .split { grid-template-columns: 1fr; gap: 38px; }
  .hero { min-height: auto; }
  .hero-grid { padding: 74px 0; }
  .route-card { min-height: 390px; }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .capability-grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .cta-band { grid-template-columns: 1fr; }
  .cta-band .button { justify-self: start; }
}

@media (max-width: 620px) {
  .container { width: min(100% - 28px, 1180px); }
  .section { padding: 68px 0; }
  .hero h1 { font-size: 3.2rem; }
  .route-card { padding: 22px; }
  .route-stats, .product-grid, .capability-grid, .steps, .spec-grid, .form-grid, .footer-grid { grid-template-columns: 1fr; }
  .product-card { min-height: 260px; }
  .field--full { grid-column: auto; }
  .cta-band { padding: 30px; }
  .footer-base { flex-direction: column; }
  .route-note { width: 130px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}