:root {
  --bg: #f6efe7;
  --bg-accent: radial-gradient(circle at top, rgba(255, 167, 93, 0.22), transparent 32%), #f6efe7;
  --surface: rgba(255, 255, 255, 0.88);
  --surface-strong: #ffffff;
  --text: #2d2016;
  --text-secondary: #6b5645;
  --primary: #dd6f1b;
  --primary-dark: #b9570f;
  --primary-soft: rgba(221, 111, 27, 0.12);
  --border: rgba(124, 82, 43, 0.14);
  --shadow: 0 24px 60px rgba(53, 31, 13, 0.10);
  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --container: 960px;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html {
  font-size: 16px;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: var(--bg-accent);
  min-height: 100vh;
  line-height: 1.6;
}

a {
  color: inherit;
}

button {
  font: inherit;
}

.page-shell {
  width: min(calc(100% - 32px), var(--container));
  margin: 0 auto;
  padding: 24px 0 40px;
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 28px;
  border: 1px solid rgba(255, 255, 255, 0.55);
  border-radius: 32px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.92), rgba(255, 246, 239, 0.84));
  box-shadow: var(--shadow);
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto -60px -90px auto;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: rgba(221, 111, 27, 0.10);
  filter: blur(8px);
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--primary-soft);
  color: var(--primary-dark);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.hero__title {
  margin: 16px 0 12px;
  font-size: clamp(2rem, 6vw, 3.6rem);
  line-height: 1.12;
  letter-spacing: -0.03em;
}

.hero__description {
  max-width: 42rem;
  margin: 0;
  color: var(--text-secondary);
  font-size: 1rem;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.content-grid {
  display: grid;
  gap: 18px;
  margin-top: 24px;
}

.card-grid {
  display: grid;
  gap: 18px;
  margin-top: 24px;
}

.card {
  padding: 22px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: 0 12px 30px rgba(55, 33, 17, 0.06);
  backdrop-filter: blur(10px);
}

.card--accent {
  background: linear-gradient(180deg, rgba(255, 248, 243, 0.96), rgba(255, 255, 255, 0.90));
}

.card__title {
  margin: 0 0 10px;
  font-size: 1.2rem;
}

.card__description,
.muted {
  margin: 0;
  color: var(--text-secondary);
}

.platform-card {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.platform-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.platform-card__badge,
.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 32px;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--primary-soft);
  color: var(--primary-dark);
  font-size: 0.875rem;
  font-weight: 700;
}

.platform-card__icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  background: var(--surface-strong);
  border: 1px solid rgba(221, 111, 27, 0.15);
  font-size: 1.4rem;
}

.platform-card__actions,
.action-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button,
.copy-button {
  appearance: none;
  border: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border-radius: 14px;
  background: var(--primary);
  color: #fff;
  text-decoration: none;
  font-weight: 700;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: transform 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
  box-shadow: 0 10px 24px rgba(221, 111, 27, 0.24);
}

.button:hover,
.copy-button:hover,
.button:focus-visible,
.copy-button:focus-visible {
  background: var(--primary-dark);
  transform: translateY(-1px);
}

.button--secondary {
  background: rgba(255, 255, 255, 0.78);
  color: var(--text);
  border: 1px solid var(--border);
  box-shadow: none;
}

.button--secondary:hover,
.button--secondary:focus-visible {
  background: #fff;
}

.steps {
  display: grid;
  gap: 14px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.steps li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  align-items: flex-start;
  padding: 16px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(124, 82, 43, 0.10);
}

.steps__index {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  display: inline-grid;
  place-items: center;
  background: var(--primary);
  color: #fff;
  font-size: 0.95rem;
  font-weight: 700;
}

.steps__content strong {
  display: block;
  margin-bottom: 4px;
  font-size: 1rem;
}

.account-box {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 18px;
  padding: 18px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(255, 245, 238, 0.95), rgba(255, 255, 255, 0.92));
  border: 1px solid rgba(221, 111, 27, 0.16);
}

.account-box__label {
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.92rem;
}

.account-box__value {
  font-size: clamp(1.25rem, 5vw, 1.8rem);
  font-weight: 800;
  letter-spacing: 0.02em;
}

.notice {
  padding: 18px;
  border-radius: var(--radius-md);
  border: 1px dashed rgba(221, 111, 27, 0.32);
  background: rgba(255, 250, 246, 0.9);
  color: var(--text-secondary);
}

.notice strong {
  display: block;
  margin-bottom: 6px;
  color: var(--text);
}

.section-title {
  margin: 0 0 10px;
  font-size: 1.1rem;
}

.site-footer {
  padding: 20px 0 8px;
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.spaced-top {
  margin-top: 18px;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 28px;
  transform: translateX(-50%) translateY(16px);
  min-width: min(calc(100% - 32px), 320px);
  padding: 14px 18px;
  border-radius: 16px;
  background: rgba(34, 27, 22, 0.94);
  color: #fff;
  text-align: center;
  font-size: 0.95rem;
  box-shadow: 0 18px 36px rgba(20, 15, 11, 0.26);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease;
  z-index: 99;
}

.toast.is-visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

@media (min-width: 768px) {
  .page-shell {
    padding-top: 36px;
    padding-bottom: 56px;
  }

  .hero {
    padding: 40px;
  }

  .card-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .content-grid--aside {
    grid-template-columns: minmax(0, 1.5fr) minmax(280px, 0.9fr);
    align-items: start;
  }

  .account-box {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

@media (max-width: 480px) {
  .page-shell {
    width: min(calc(100% - 24px), var(--container));
  }

  .hero,
  .card {
    padding: 20px;
    border-radius: 24px;
  }

  .button,
  .button--secondary,
  .copy-button {
    width: 100%;
  }

  .hero__actions,
  .platform-card__actions,
  .action-row {
    flex-direction: column;
  }
}