/* Portal style: deep navy, editorial typography, glass cards. */
:root {
  --bg: #030c1e;
  --bg-2: #061529;
  --ink: #f1f6ff;
  --ink-2: #a2bdd3;
  --ink-3: #6f8aa6;
  --accent: #a5dce9;
  --glow: #4fc3ff;
  --line: rgba(165, 220, 233, .16);
  --line-2: rgba(165, 220, 233, .32);
  --sans: "Noto Sans CJK SC", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --mono: "SF Mono", Menlo, Consolas, monospace;
  --num: "DIN Alternate", "Bahnschrift", var(--sans);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--sans); color: var(--ink); background: var(--bg); line-height: 1.7; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
em { font-style: normal; }

.wrap { max-width: 1280px; margin: 0 auto; padding: 0 48px; }
.wrap-wide { max-width: 1520px; margin: 0 auto; padding: 0 32px; }
.narrow { max-width: 820px; }
.mono { font-family: var(--mono); font-size: 11px; letter-spacing: 2px; color: var(--ink-3); text-transform: uppercase; }

/* Top bar */
.topbar { position: sticky; top: 0; z-index: 20; background: rgba(3, 12, 30, .85); backdrop-filter: blur(9px); border-bottom: 1px solid var(--line); font-size: 13px; }
.topbar-inner { display: flex; justify-content: space-between; align-items: center; height: 48px; }
.topbar b { letter-spacing: 1px; }
.topbar span { color: var(--ink-2); }
.topbar nav { display: flex; gap: 28px; }
.topbar nav a:hover { color: var(--accent); }

/* Hero */
.hero { position: relative; min-height: calc(100vh - 48px); overflow: hidden;
  background: radial-gradient(ellipse 60% 70% at 78% 55%, rgba(30, 90, 160, .35), transparent 70%),
              linear-gradient(90deg, #030c1e 0%, #04132d 55%, #051a3a 100%); }
.hero-canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.hero-grid { position: absolute; inset: 0; pointer-events: none;
  background: repeating-linear-gradient(90deg, transparent 0 119px, rgba(165, 220, 233, .04) 119px 120px),
              linear-gradient(180deg, transparent 60%, rgba(3, 11, 27, .9)); }
.hero-wrap { position: relative; min-height: calc(100vh - 48px); display: flex; flex-direction: column; }

.brand-row { display: flex; justify-content: space-between; align-items: center; padding: 36px 0; border-bottom: 1px solid var(--line); }
.brand { display: flex; align-items: center; gap: 14px; }
.brand-mark { font: 700 28px/1 var(--sans); letter-spacing: 2px; }
.brand-name { font-size: 10px; line-height: 1.3; letter-spacing: 1px; font-weight: 600; }
.brand-tag { margin-left: 40px; font-size: 13px; letter-spacing: 3px; color: var(--ink-2); }
.brand-side { text-align: right; display: flex; flex-direction: column; }
.brand-side .mono { letter-spacing: 4px; }
.brand-side b { font: 300 22px var(--num); letter-spacing: 2px; }

.hero-main { flex: 1; display: grid; grid-template-columns: 1fr auto; gap: 48px; align-items: center; padding: 64px 0; }
.eyebrow { display: flex; align-items: center; gap: 10px; font-size: 13px; letter-spacing: 3px; color: var(--ink-2); margin-bottom: 28px; }
.eyebrow i { width: 6px; height: 6px; background: var(--accent); box-shadow: 0 0 8px var(--glow); }
.hero h1 { font-size: clamp(40px, 5vw, 72px); white-space: nowrap; font-weight: 700; line-height: 1.1; letter-spacing: -1.5px; margin-bottom: 24px; }
.hero-sub { font-size: clamp(22px, 2.6vw, 36px); color: var(--accent); font-weight: 400; letter-spacing: 1px; margin-bottom: 36px; }
.hero-desc { color: var(--ink-2); font-size: 15px; line-height: 2; }

.hero-cards { display: grid; grid-template-columns: repeat(2, 280px); gap: 22px; }
.glass-card { position: relative; display: flex; flex-direction: column; padding: 30px 28px; min-height: 300px;
  background: linear-gradient(155deg, rgba(22, 61, 100, .53), rgba(6, 33, 57, .72));
  border: 1px solid var(--line-2); backdrop-filter: blur(9px); transition: border-color .3s, transform .3s; }
.glass-card::before { content: ""; position: absolute; top: -1px; left: -1px; width: 36px; height: 2px; background: var(--accent); box-shadow: 0 0 10px var(--glow); transition: width .3s; }
.glass-card:not(.static):hover { border-color: var(--accent); transform: translateY(-4px); }
.glass-card:not(.static):hover::before { width: 100%; }
.glass-card h3 { display: flex; justify-content: space-between; font-size: 28px; font-weight: 500; margin: 30px 0 14px; }
.glass-card h3 em { font-size: 20px; color: var(--accent); }
.glass-card p { font-size: 13px; color: var(--ink-2); line-height: 1.9; }
.card-foot { margin-top: auto; padding-top: 18px; border-top: 1px solid var(--line-2); display: flex; justify-content: space-between; font-size: 12px; font-weight: 600; }
.card-foot em { font-size: 18px; }

.hero-stats { display: flex; align-items: center; gap: 56px; padding: 28px 0 32px; border-top: 1px solid var(--line); font-size: 12px; }
.hero-stats span { color: var(--ink-3); letter-spacing: 1px; margin-right: 12px; }
.hero-stats b { font: 400 18px var(--num); color: var(--accent); letter-spacing: 1px; }
.hero-stats-right { margin-left: auto; color: var(--ink-3); letter-spacing: 1px; }

/* Sections */
.section { padding: 120px 0; border-top: 1px solid var(--line); background: var(--bg); }
.section:nth-of-type(even) { background: var(--bg-2); }
.section-head { margin-bottom: 56px; }
.section-head .mono { display: block; margin-bottom: 16px; color: var(--accent); }
.section-head h2 { font-size: clamp(28px, 3.2vw, 44px); font-weight: 600; letter-spacing: -.5px; }
.section-head p { color: var(--ink-2); margin-top: 12px; font-size: 15px; }

.cards-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.cards-3 .glass-card { min-height: 0; }
.cards-3 .glass-card h3 { margin-top: 24px; }

.features { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.feature { padding: 36px 32px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); transition: background .3s; }
.feature:hover { background: rgba(165, 220, 233, .04); }
.feature .mono { color: var(--accent); }
.feature h3 { font-size: 20px; font-weight: 500; margin: 14px 0 10px; }
.feature p { color: var(--ink-2); font-size: 14px; }

.cases { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.case { background: var(--bg); padding: 28px 24px; }
.case b { display: block; font-weight: 500; font-size: 17px; margin-bottom: 8px; }
.case span { color: var(--ink-3); font-size: 13px; }
.case.accent { background: linear-gradient(155deg, rgba(22, 61, 100, .6), rgba(6, 33, 57, .8)); }
.case.accent b { color: var(--accent); }

details { border-bottom: 1px solid var(--line); padding: 24px 0; }
details:first-of-type { border-top: 1px solid var(--line); }
summary { cursor: pointer; font-size: 17px; font-weight: 500; list-style: none; display: flex; justify-content: space-between; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; color: var(--accent); font-family: var(--mono); }
details[open] summary::after { content: "-"; }
details p { color: var(--ink-2); margin-top: 12px; font-size: 15px; }

/* Booking form */
.form { padding: 40px; border: 1px solid var(--line-2); background: linear-gradient(155deg, rgba(18, 50, 92, .47), rgba(6, 21, 43, .85)); position: relative; }
.form::before { content: ""; position: absolute; top: -1px; left: -1px; width: 48px; height: 2px; background: var(--accent); box-shadow: 0 0 10px var(--glow); }
.form label { display: block; font-size: 13px; letter-spacing: 1px; color: var(--ink-2); margin-bottom: 22px; }
.form input, .form select, .form textarea { display: block; width: 100%; margin-top: 8px; padding: 12px 14px;
  background: rgba(3, 12, 30, .6); border: 1px solid var(--line-2); color: var(--ink); font: 15px var(--sans); }
.form input:focus, .form select:focus, .form textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }
.form input::placeholder, .form textarea::placeholder { color: var(--ink-3); }
.btn { width: 100%; display: flex; justify-content: space-between; align-items: center; padding: 16px 20px; cursor: pointer;
  background: var(--accent); color: var(--bg); border: none; font: 600 15px var(--sans); letter-spacing: 1px; transition: background .2s; }
.btn:hover { background: #c2e9f4; }
.btn em { font-size: 18px; }
.form-done { margin-top: 16px; color: var(--accent); text-align: center; }
.form-done.error { color: #ff9a76; }
.form .btn:disabled { cursor: wait; opacity: .65; }
.form-honeypot { position: absolute !important; left: -10000px !important; width: 1px !important; height: 1px !important; opacity: 0 !important; }

.footer { border-top: 1px solid var(--line); padding: 32px 0; font-size: 12px; color: var(--ink-3); }
.footer-inner { display: flex; justify-content: space-between; gap: 24px; }

@media (max-width: 1100px) {
  .hero-main { grid-template-columns: 1fr; }
  .hero-cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 760px) {
  .wrap { padding: 0 20px; }
  .hero h1 { white-space: normal; }
  .wrap-wide { padding: 0 12px; }
  .topbar nav a:not(:last-child) { display: none; }
  .brand-tag, .brand-side { display: none; }
  .hero-cards { grid-template-columns: 1fr; }
  .glass-card { min-height: 0; }
  .hero-stats { flex-wrap: wrap; gap: 14px 28px; }
  .hero-stats-right { margin-left: 0; }
  .section { padding: 72px 0; }
  .cards-3, .features { grid-template-columns: 1fr; }
  .cases { grid-template-columns: repeat(2, 1fr); }
  .form { padding: 24px; }
  .footer-inner { flex-direction: column; }
}
.demo-note { text-align: center; color: var(--ink-3); font-size: 13px; margin-top: 16px; }