:root {
  --bg: #f6f2e9;
  --bg-accent: #ebe1cb;
  --ink: #102133;
  --ink-soft: #52606d;
  --gold: #b88a2f;
  --gold-deep: #8e6514;
  --navy: #103a63;
  --navy-deep: #0a2743;
  --line: rgba(16, 33, 51, 0.12);
  --panel: rgba(255, 255, 255, 0.82);
  --shadow: 0 20px 60px rgba(16, 33, 51, 0.12);
  --shadow-soft: 0 14px 40px rgba(16, 33, 51, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Noto Sans TC", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(184, 138, 47, 0.18), transparent 28%),
    radial-gradient(circle at top right, rgba(16, 58, 99, 0.14), transparent 24%),
    linear-gradient(180deg, #fbf8f1 0%, var(--bg) 56%, #efe6d5 100%);
}

body.is-locked {
  overflow: hidden;
}

code {
  padding: 2px 6px;
  border-radius: 8px;
  background: rgba(16, 33, 51, 0.08);
  font-family: "Consolas", "Courier New", monospace;
  font-size: 0.92em;
}

.gate-screen {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: grid;
  place-items: center;
  padding: 20px;
  background:
    linear-gradient(135deg, rgba(10, 39, 67, 0.84), rgba(16, 58, 99, 0.88)),
    radial-gradient(circle at top, rgba(184, 138, 47, 0.28), transparent 28%);
  backdrop-filter: blur(10px);
}

.gate-screen.is-hidden {
  display: none;
}

.gate-card {
  width: min(520px, 100%);
  padding: 32px;
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 24px 80px rgba(10, 39, 67, 0.28);
}

.gate-card h1 {
  margin: 0 0 14px;
  font-size: clamp(2rem, 4vw, 3.2rem);
  line-height: 1.04;
}

.gate-text,
.gate-hint,
.hero-text,
.section-heading p,
.card-description,
.notice-item p,
.info-box p,
.package-compare p {
  color: var(--ink-soft);
  line-height: 1.8;
}

.gate-form {
  display: grid;
  gap: 12px;
  margin-top: 22px;
}

.gate-label {
  font-size: 0.95rem;
  font-weight: 700;
}

.gate-input {
  min-height: 52px;
  padding: 12px 16px;
  border: 1px solid rgba(16, 33, 51, 0.18);
  border-radius: 16px;
  font-size: 1rem;
  outline: none;
  transition: border-color 180ms ease, box-shadow 180ms ease;
}

.gate-input:focus {
  border-color: rgba(16, 58, 99, 0.46);
  box-shadow: 0 0 0 4px rgba(16, 58, 99, 0.08);
}

.gate-button {
  border: 0;
  cursor: pointer;
}

.gate-hint {
  margin: 16px 0 0;
  font-size: 0.92rem;
}

.gate-error {
  min-height: 24px;
  margin: 10px 0 0;
  color: #a32e2e;
  font-weight: 700;
}

.page-shell {
  width: min(1180px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 28px 0 56px;
}

.hero {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 28px;
  align-items: stretch;
  padding: 34px;
  border: 1px solid rgba(255, 255, 255, 0.45);
  border-radius: 30px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.94), rgba(255, 247, 232, 0.84)),
    linear-gradient(180deg, rgba(184, 138, 47, 0.08), rgba(16, 58, 99, 0.08));
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.brand-lockup {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-bottom: 8px;
}

.brand-logo {
  width: 82px;
  height: 82px;
  object-fit: contain;
  flex: 0 0 auto;
  border-radius: 20px;
  box-shadow: 0 12px 32px rgba(16, 33, 51, 0.14);
}

.eyebrow,
.section-kicker,
.card-topline {
  margin: 0 0 12px;
  font-family: "Urbanist", sans-serif;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gold-deep);
}

.hero h1,
.section-heading h2 {
  margin: 0;
  line-height: 1.05;
}

.hero h1 {
  font-size: clamp(2.4rem, 5vw, 4.6rem);
  font-weight: 800;
}

.hero-text {
  max-width: 56ch;
  font-size: 1.02rem;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.hero-badges span {
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid rgba(16, 33, 51, 0.08);
  background: rgba(255, 255, 255, 0.78);
  font-size: 0.92rem;
}

.hero-panel {
  display: grid;
  gap: 14px;
}

.hero-panel-card,
.download-card,
.info-box,
.notice-item,
.version-card {
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--panel);
  box-shadow: var(--shadow-soft);
}

.hero-panel-card {
  padding: 20px 22px;
}

.panel-label {
  margin: 0 0 10px;
  color: var(--ink-soft);
  font-size: 0.94rem;
}

.panel-value {
  margin: 0;
  font-size: 1.55rem;
  font-weight: 800;
}

.content {
  margin-top: 28px;
}

.section-heading {
  margin-bottom: 20px;
  padding: 0 6px;
}

.section-heading.compact {
  margin-top: 40px;
}

.download-grid,
.version-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}

.download-card,
.version-card {
  padding: 26px;
  position: relative;
  overflow: hidden;
}

.download-card::before,
.version-card::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.35;
}

.test-card::before {
  background: linear-gradient(135deg, rgba(184, 138, 47, 0.22), transparent 40%);
}

.formal-card::before,
.version-card::before {
  background: linear-gradient(135deg, rgba(16, 58, 99, 0.18), transparent 40%);
}

.download-card h3,
.version-card h3 {
  margin: 0 0 14px;
  font-size: 1.7rem;
}

.card-list {
  margin: 18px 0 20px;
  padding-left: 18px;
  color: var(--ink);
  line-height: 1.8;
}

.card-meta,
.version-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 18px;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.download-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 52px;
  border-radius: 16px;
  text-decoration: none;
  font-weight: 700;
  transition: transform 180ms ease, box-shadow 180ms ease, opacity 180ms ease;
}

.download-button:hover {
  transform: translateY(-2px);
  opacity: 0.96;
}

.download-button.primary {
  color: #fff;
  background: linear-gradient(135deg, var(--navy), var(--navy-deep));
  box-shadow: 0 16px 28px rgba(16, 58, 99, 0.24);
}

.download-button.secondary {
  color: #fff;
  background: linear-gradient(135deg, var(--gold), var(--gold-deep));
  box-shadow: 0 16px 28px rgba(184, 138, 47, 0.24);
}

.info-strip,
.notice-panel {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 24px;
}

.info-box,
.notice-item {
  padding: 20px;
}

.info-box h4,
.notice-item h4 {
  margin: 0 0 10px;
  font-size: 1.04rem;
}

.package-compare {
  display: grid;
  gap: 18px;
}

.package-compare strong {
  display: block;
  margin-bottom: 8px;
  font-size: 1rem;
}

@media (max-width: 980px) {
  .hero,
  .download-grid,
  .version-grid,
  .info-strip,
  .notice-panel {
    grid-template-columns: 1fr;
  }

  .hero {
    padding: 26px;
  }
}

@media (max-width: 640px) {
  .page-shell {
    width: min(100vw - 20px, 1180px);
    padding: 18px 0 40px;
  }

  .hero {
    gap: 20px;
    border-radius: 24px;
  }

  .brand-lockup {
    align-items: flex-start;
    flex-direction: column;
  }

  .brand-logo {
    width: 72px;
    height: 72px;
  }

  .download-card,
  .info-box,
  .notice-item,
  .version-card,
  .gate-card {
    border-radius: 20px;
  }

  .gate-card {
    padding: 24px;
  }
}