/* VECTOR84 — site system */
:root {
  --bg: #071318;
  --bg-elevated: #0b1e26;
  --bg-panel: rgba(13, 41, 49, 0.72);
  --line: rgba(85, 228, 213, 0.18);
  --line-strong: rgba(85, 228, 213, 0.42);
  --text: #eafdfc;
  --muted: #8fb4b6;
  --cyan: #55e4d5;
  --amber: #ffd45a;
  --magenta: #eb70ff;
  --danger: #ff704f;
  --max: 1040px;
  --radius: 14px;
  --font: "Segoe UI", "Helvetica Neue", "PingFang TC", "Noto Sans TC", sans-serif;
  --mono: "SFMono-Regular", "Menlo", "Consolas", monospace;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(85, 228, 213, 0.12), transparent 55%),
    radial-gradient(900px 500px at -10% 20%, rgba(235, 112, 255, 0.08), transparent 50%),
    linear-gradient(180deg, #061015 0%, var(--bg) 40%, #050d11 100%);
  line-height: 1.6;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--cyan);
  text-decoration: none;
}

a:hover {
  color: #9ff7ee;
  text-decoration: underline;
}

.wrap {
  width: min(var(--max), calc(100% - 2rem));
  margin-inline: auto;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(14px);
  background: rgba(7, 19, 24, 0.82);
  border-bottom: 1px solid var(--line);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text);
  text-decoration: none;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.brand:hover {
  text-decoration: none;
  color: var(--cyan);
}

.brand img {
  height: 28px;
  width: auto;
}

.brand span {
  font-size: 0.95rem;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1rem;
  align-items: center;
  font-size: 0.92rem;
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
}

.nav-links a:hover {
  color: var(--cyan);
}

/* Hero */
.hero {
  padding: 3.5rem 0 2.5rem;
}

.hero-grid {
  display: grid;
  gap: 2rem;
  align-items: center;
}

@media (min-width: 860px) {
  .hero-grid {
    grid-template-columns: 1.05fr 0.95fr;
  }
}

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.28rem 0.7rem;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  color: var(--cyan);
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: rgba(85, 228, 213, 0.06);
}

.hero h1 {
  margin: 0.9rem 0 0.7rem;
  font-size: clamp(2.1rem, 5vw, 3.4rem);
  line-height: 1.05;
  letter-spacing: 0.02em;
}

.tagline {
  margin: 0 0 1rem;
  color: var(--amber);
  font-size: 1.15rem;
  font-weight: 600;
}

.lede {
  margin: 0 0 1.5rem;
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 38rem;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  min-height: 2.7rem;
  padding: 0.55rem 1.15rem;
  border-radius: 10px;
  border: 1px solid transparent;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-decoration: none;
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}

.btn:hover {
  transform: translateY(-1px);
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(180deg, #6ef0e2 0%, var(--cyan) 100%);
  color: #042028;
}

.btn-primary:hover {
  color: #021419;
  background: linear-gradient(180deg, #9ff7ee 0%, #55e4d5 100%);
}

.btn-secondary {
  background: transparent;
  color: var(--text);
  border-color: var(--line-strong);
}

.btn-secondary:hover {
  color: var(--cyan);
  border-color: var(--cyan);
}

.meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.meta-row strong {
  color: var(--text);
  font-weight: 600;
}

.hero-media {
  position: relative;
  border-radius: calc(var(--radius) + 4px);
  border: 1px solid var(--line);
  overflow: hidden;
  background: var(--bg-elevated);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
}

.hero-media img {
  width: 100%;
  aspect-ratio: 1232 / 706;
  object-fit: cover;
}

.hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, transparent 55%, rgba(7, 19, 24, 0.55));
}

/* Sections */
section {
  padding: 2.25rem 0;
}

.section-title {
  margin: 0 0 1rem;
  font-size: 1.35rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.section-title span {
  color: var(--cyan);
}

.cards {
  display: grid;
  gap: 1rem;
}

@media (min-width: 720px) {
  .cards {
    grid-template-columns: repeat(3, 1fr);
  }
}

.card {
  padding: 1.15rem 1.2rem;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--bg-panel);
}

.card h3 {
  margin: 0 0 0.45rem;
  font-size: 1rem;
  color: var(--amber);
  letter-spacing: 0.03em;
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.panel {
  padding: 1.25rem 1.35rem;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--bg-panel);
}

.panel h2 {
  margin: 0 0 0.75rem;
  font-size: 1.2rem;
}

.panel p,
.panel li {
  color: var(--muted);
}

.panel ul {
  margin: 0.5rem 0 0;
  padding-left: 1.2rem;
}

.contact-grid {
  display: grid;
  gap: 1rem;
}

@media (min-width: 720px) {
  .contact-grid {
    grid-template-columns: 1.2fr 0.8fr;
  }
}

.email-block {
  font-family: var(--mono);
  font-size: 1.05rem;
  color: var(--cyan);
  word-break: break-all;
}

.email-block a {
  font-weight: 700;
}

.note {
  margin-top: 0.75rem;
  font-size: 0.88rem;
  color: var(--muted);
}

/* Legal pages */
.legal {
  padding: 2.5rem 0 4rem;
}

.legal header {
  margin-bottom: 1.75rem;
}

.legal h1 {
  margin: 0.4rem 0 0.5rem;
  font-size: clamp(1.8rem, 4vw, 2.4rem);
}

.legal .updated {
  color: var(--muted);
  font-size: 0.9rem;
}

.legal article {
  padding: 1.5rem 1.6rem;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--bg-panel);
}

.legal h2 {
  margin: 1.6rem 0 0.55rem;
  font-size: 1.1rem;
  color: var(--cyan);
}

.legal h2:first-child {
  margin-top: 0;
}

.legal p,
.legal li {
  color: var(--muted);
}

.legal ul {
  padding-left: 1.2rem;
}

/* Footer */
.site-footer {
  margin-top: 2rem;
  padding: 1.5rem 0 2.25rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.88rem;
}

.footer-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: space-between;
  align-items: flex-start;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.1rem;
}

.footer-links a {
  color: var(--muted);
}

.footer-links a:hover {
  color: var(--cyan);
}