:root {
  --bg: #0b0b0f;
  --bg-elevated: #111118;
  --card: #17171d;
  --border: #26262f;
  --teal: #4fd1c5;
  --teal-dim: rgba(79, 209, 197, 0.14);
  --amber: #f6c36b;
  --coral: #f2726f;
  --text: #f4f4f7;
  --muted: #9b9ba8;
  --faint: #6e6e78;
  --shadow: 0 30px 80px rgba(0, 0, 0, 0.45);
  --radius: 22px;
  --max: 1120px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  margin: 0;
  overflow-x: hidden;
  color: var(--text);
  background:
    radial-gradient(900px 480px at 80% -10%, rgba(79, 209, 197, 0.12), transparent 55%),
    radial-gradient(700px 420px at -10% 20%, rgba(246, 195, 107, 0.06), transparent 50%),
    var(--bg);
  font-family: "SF Pro Display", "SF Pro Text", "PingFang TC", "Noto Sans TC", "Hiragino Kaku Gothic ProN", sans-serif;
  line-height: 1.6;
  letter-spacing: 0.01em;
  overflow-wrap: break-word;
}

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

a {
  color: inherit;
  text-decoration: none;
}

.wrap {
  width: min(var(--max), calc(100% - 32px));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: #0b0b0f;
  border-bottom: 1px solid rgba(38, 38, 47, 0.8);
}

.site-header .wrap,
.site-footer .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 68px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  letter-spacing: -0.03em;
}

.brand img {
  width: 36px;
  height: 36px;
  object-fit: cover;
  border-radius: 10px;
  border: 1px solid var(--border);
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  color: var(--muted);
  font-size: 0.92rem;
}

.nav a:hover,
.nav a[aria-current="page"] {
  color: var(--text);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 56px;
  align-items: center;
  padding: 72px 0 40px;
}

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--teal-dim);
  color: var(--teal);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
}

h1,
h2,
h3 {
  margin: 0;
  letter-spacing: -0.04em;
  line-height: 1.15;
}

h1 {
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  font-weight: 700;
}

h2 {
  font-size: clamp(1.6rem, 3vw, 2.15rem);
}

.lede {
  max-width: 38rem;
  margin: 18px 0 28px;
  color: var(--muted);
  font-size: 1.05rem;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border-radius: 999px;
  font-weight: 650;
}

.btn-primary {
  background: var(--teal);
  color: #102321;
}

.btn-ghost {
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
}

.btn:hover {
  transform: translateY(-1px);
}

.phone {
  width: min(100%, 290px);
  margin-inline: auto;
  padding: 10px;
  border-radius: 36px;
  background: linear-gradient(180deg, #1d1d24, #121218);
  border: 1px solid var(--border);
  box-shadow: var(--shadow), 0 0 0 1px rgba(79, 209, 197, 0.08);
}

.phone img {
  width: 100%;
  border-radius: 26px;
}

.hero-phone {
  position: relative;
}

.hero-phone::before {
  content: "";
  position: absolute;
  inset: 12% 8% auto;
  height: 55%;
  background: radial-gradient(circle, rgba(79, 209, 197, 0.22), transparent 70%);
  filter: blur(18px);
  z-index: -1;
}

.rules {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  padding: 24px 0 72px;
}

.rule {
  padding: 22px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--card);
}

.rule strong {
  display: block;
  margin-bottom: 8px;
  color: var(--teal);
  font-size: 0.82rem;
  letter-spacing: 0.08em;
}

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

.section {
  padding: 28px 0 84px;
}

.section-head {
  max-width: 40rem;
  margin-bottom: 40px;
}

.section-head p {
  margin: 12px 0 0;
  color: var(--muted);
}

.feature {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 48px;
  align-items: center;
  margin-bottom: 72px;
}

.feature:last-child {
  margin-bottom: 0;
}

.feature.reverse .feature-copy {
  order: 2;
}

.feature.reverse .phone {
  order: 1;
}

.feature h3 {
  margin: 10px 0 12px;
  font-size: 1.7rem;
}

.feature p {
  margin: 0;
  color: var(--muted);
}

.step {
  display: inline-block;
  color: var(--amber);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.note {
  padding: 28px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(242, 114, 111, 0.08), var(--card));
}

.note h2 {
  margin-bottom: 10px;
}

.note p {
  margin: 0;
  color: var(--muted);
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 28px 0 40px;
  color: var(--faint);
  font-size: 0.88rem;
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 18px;
}

.legal {
  padding: 56px 0 88px;
}

.legal-card {
  max-width: 760px;
  margin: 0 auto;
  padding: 36px 8px;
}

.legal-card header {
  margin-bottom: 36px;
}

.legal-card .meta {
  margin-top: 10px;
  color: var(--faint);
  font-size: 0.9rem;
}

.legal-card h2 {
  margin: 32px 0 10px;
  font-size: 1.15rem;
}

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

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

.legal-card a {
  color: var(--teal);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.support-panel {
  display: grid;
  gap: 18px;
  margin-top: 28px;
}

.support-card {
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--card);
}

.support-card h2 {
  margin-bottom: 8px;
  font-size: 1.2rem;
}

.support-card p {
  margin: 0 0 16px;
  color: var(--muted);
}

.mail {
  font-size: 1.15rem;
  color: var(--teal);
  font-weight: 650;
}

@media (max-width: 960px) {
  .hero,
  .feature,
  .feature.reverse,
  .rules {
    grid-template-columns: 1fr;
  }

  .feature.reverse .feature-copy,
  .feature.reverse .phone {
    order: initial;
  }

  .hero {
    padding-top: 36px;
    gap: 32px;
  }

  .feature {
    gap: 20px;
    margin-bottom: 56px;
  }

  .site-header .wrap,
  .site-footer .wrap {
    gap: 12px;
    min-height: 60px;
  }

  h1 {
    font-size: 2rem;
  }
}