:root {
  --bg: #080a0f;
  --bg-soft: #0e121b;
  --panel: rgba(255,255,255,.045);
  --panel-strong: rgba(255,255,255,.075);
  --text: #f4f6fb;
  --muted: #aeb7c8;
  --line: rgba(255,255,255,.12);
  --accent: #8b7cff;
  --accent-2: #4bc5ff;
  --max: 1180px;
  --radius: 22px;
  --shadow: 0 24px 80px rgba(0,0,0,.35);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 80% 10%, rgba(75,197,255,.10), transparent 32rem),
    radial-gradient(circle at 10% 0%, rgba(139,124,255,.14), transparent 34rem),
    var(--bg);
  font-family: Inter, "Noto Sans TC", "Noto Sans JP", "Segoe UI", system-ui, sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font: inherit; }
.container { width: min(calc(100% - 40px), var(--max)); margin: 0 auto; }
.site-header {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(18px);
  background: rgba(8,10,15,.72);
  border-bottom: 1px solid rgba(255,255,255,.07);
}
.nav {
  height: 78px; display: flex; align-items: center; justify-content: space-between; gap: 24px;
}
.brand { display: flex; align-items: center; gap: 14px; min-width: 220px; }
.brand-logo {
  width: 54px; height: 54px; object-fit: contain;
  filter: invert(1); opacity: .95;
}
.brand-name { font-weight: 700; letter-spacing: .08em; font-size: .92rem; }
.nav-links { display: flex; align-items: center; gap: 28px; color: var(--muted); font-size: .94rem; }
.nav-links a:hover { color: var(--text); }
.lang { display: flex; gap: 7px; padding: 5px; border: 1px solid var(--line); border-radius: 999px; }
.lang a { padding: 5px 10px; border-radius: 999px; color: var(--muted); font-size: .82rem; }
.lang a.active, .lang a:hover { color: var(--text); background: rgba(255,255,255,.09); }
.hero {
  position: relative; overflow: hidden;
  min-height: calc(100svh - 78px);
  display: grid; align-items: center;
  padding: 96px 0 78px;
}
.hero::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: linear-gradient(to bottom, black, transparent 82%);
}
.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1.3fr .7fr; gap: 70px; align-items: center; }
.eyebrow {
  display: inline-flex; gap: 10px; align-items: center;
  padding: 7px 12px; border: 1px solid var(--line); border-radius: 999px;
  color: #dbe2f0; font-size: .78rem; letter-spacing: .13em; text-transform: uppercase;
}
.eyebrow::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: linear-gradient(135deg,var(--accent),var(--accent-2)); box-shadow: 0 0 18px var(--accent); }
h1 {
  max-width: 850px; margin: 26px 0 24px;
  font-size: clamp(3.2rem, 7.4vw, 7.3rem);
  line-height: .96; letter-spacing: -.055em;
}
.hero-lead { max-width: 660px; margin: 0; color: var(--muted); font-size: clamp(1.05rem, 2vw, 1.35rem); }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 34px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 48px; padding: 0 20px; border-radius: 999px;
  border: 1px solid var(--line); transition: .22s ease;
}
.btn-primary { border-color: transparent; background: linear-gradient(135deg,var(--accent),var(--accent-2)); color: #071019; font-weight: 750; }
.btn-secondary { color: var(--text); background: rgba(255,255,255,.04); }
.btn:hover { transform: translateY(-2px); box-shadow: 0 14px 40px rgba(0,0,0,.25); }
.hero-mark {
  width: min(100%, 390px); aspect-ratio: 1; justify-self: end;
  display: grid; place-items: center;
  border: 1px solid var(--line); border-radius: 36px;
  background: linear-gradient(145deg, rgba(255,255,255,.08), rgba(255,255,255,.015));
  box-shadow: var(--shadow);
  transform: rotate(2deg);
}
.hero-mark img { width: 78%; filter: invert(1); opacity: .92; transform: rotate(-2deg); }
.section { padding: 110px 0; }
.section-kicker { color: var(--accent-2); font-size: .79rem; font-weight: 750; letter-spacing: .16em; text-transform: uppercase; }
.section-title { margin: 12px 0 18px; max-width: 800px; font-size: clamp(2rem, 4.7vw, 4.2rem); line-height: 1.07; letter-spacing: -.04em; }
.section-copy { max-width: 760px; color: var(--muted); font-size: 1.08rem; }
.cards { margin-top: 48px; display: grid; grid-template-columns: repeat(4,1fr); gap: 16px; }
.card {
  min-height: 280px; padding: 28px;
  border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--panel); position: relative; overflow: hidden;
  transition: .25s ease;
}
.card::after {
  content: ""; position: absolute; width: 130px; height: 130px; right: -50px; bottom: -60px;
  border-radius: 50%; background: radial-gradient(circle, rgba(139,124,255,.23), transparent 68%);
}
.card:hover { transform: translateY(-6px); background: var(--panel-strong); border-color: rgba(139,124,255,.42); }
.card-num { color: var(--muted); font-size: .75rem; letter-spacing: .13em; }
.card h3 { margin: 48px 0 12px; font-size: 1.35rem; }
.card p { margin: 0; color: var(--muted); font-size: .94rem; }
.split { display: grid; grid-template-columns: .85fr 1.15fr; gap: 70px; align-items: start; }
.feature-list { border-top: 1px solid var(--line); }
.feature {
  display: grid; grid-template-columns: 180px 1fr; gap: 26px;
  padding: 25px 0; border-bottom: 1px solid var(--line);
}
.feature strong { font-size: .96rem; }
.feature span { color: var(--muted); }
.experience {
  margin-top: 48px; padding: 36px; border: 1px solid var(--line); border-radius: var(--radius);
  background: linear-gradient(130deg, rgba(139,124,255,.09), rgba(75,197,255,.04));
}
.tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.tag { padding: 9px 14px; border-radius: 999px; border: 1px solid var(--line); color: #dbe2f0; background: rgba(255,255,255,.035); }
.quote {
  padding: 100px 0;
  border-top: 1px solid rgba(255,255,255,.06);
  border-bottom: 1px solid rgba(255,255,255,.06);
}
.quote p { max-width: 960px; margin: 0; font-size: clamp(2rem,5vw,4.8rem); line-height: 1.1; letter-spacing: -.045em; }
.quote em { color: var(--muted); font-style: normal; }
.contact-box {
  margin-top: 44px; display: grid; grid-template-columns: 1fr auto; gap: 30px; align-items: center;
  padding: 38px; border: 1px solid var(--line); border-radius: 28px;
  background: linear-gradient(145deg,rgba(255,255,255,.07),rgba(255,255,255,.025));
}
.contact-box p { margin: 0; color: var(--muted); }
.footer { padding: 34px 0 46px; color: var(--muted); font-size: .86rem; }
.footer-row { display: flex; justify-content: space-between; gap: 20px; align-items: center; }
.mobile-toggle { display: none; border: 0; background: none; color: var(--text); font-size: 1.35rem; }
.fade { opacity: 0; transform: translateY(18px); transition: opacity .7s ease, transform .7s ease; }
.fade.show { opacity: 1; transform: none; }

@media (max-width: 960px) {
  .hero-grid, .split { grid-template-columns: 1fr; }
  .hero-mark { justify-self: start; width: 280px; }
  .cards { grid-template-columns: repeat(2,1fr); }
  .nav-links {
    position: fixed; left: 20px; right: 20px; top: 88px;
    display: none; flex-direction: column; align-items: stretch; gap: 14px;
    padding: 22px; border: 1px solid var(--line); border-radius: 20px;
    background: rgba(8,10,15,.97); box-shadow: var(--shadow);
  }
  .nav-links.open { display: flex; }
  .lang { align-self: flex-start; }
  .mobile-toggle { display: block; }
}
@media (max-width: 640px) {
  .container { width: min(calc(100% - 28px), var(--max)); }
  .brand-name { display: none; }
  .hero { padding-top: 68px; }
  h1 { font-size: clamp(3rem, 16vw, 5rem); }
  .hero-mark { width: 220px; border-radius: 28px; }
  .cards { grid-template-columns: 1fr; }
  .card { min-height: 225px; }
  .feature { grid-template-columns: 1fr; gap: 8px; }
  .contact-box { grid-template-columns: 1fr; padding: 26px; }
  .footer-row { flex-direction: column; align-items: flex-start; }
}