:root {
  --bg: #f4efe6;
  --surface: rgba(255, 255, 255, 0.84);
  --surface-strong: #fffdf8;
  --text: #14212a;
  --muted: #556470;
  --line: rgba(20, 33, 42, 0.12);
  --accent: #0f766e;
  --accent-strong: #0f4d4b;
  --accent-soft: rgba(15, 118, 110, 0.12);
  --shadow: 0 20px 50px rgba(20, 33, 42, 0.08);
}

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

html {
  scroll-behavior: smooth;
}

html:not([data-site-lang]),
html[data-site-lang="zh"] {
  --lang-visible: zh;
}

html[data-site-lang="en"] {
  --lang-visible: en;
}

html:not([data-site-lang]) .i18n[data-lang="en"],
html[data-site-lang="zh"] .i18n[data-lang="en"],
html[data-site-lang="en"] .i18n[data-lang="zh"] {
  display: none !important;
}

body {
  margin: 0;
  font-family: "Avenir Next", "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(15, 118, 110, 0.12), transparent 32%),
    radial-gradient(circle at bottom right, rgba(211, 161, 105, 0.12), transparent 28%),
    var(--bg);
}

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

button,
input,
select,
textarea {
  font: inherit;
}

.site-shell {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 24px 0 40px;
}

.site-header,
.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.site-header {
  padding: 10px 0 22px;
}

.header-right {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 18px;
  flex-wrap: wrap;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  background: linear-gradient(135deg, #0f766e, #163c52);
  color: #fff;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.brand-copy {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.brand-copy strong {
  font-family: "Iowan Old Style", "Palatino Linotype", Georgia, serif;
  font-size: 1.2rem;
}

.brand-copy small,
.muted,
.meta-line {
  color: var(--muted);
}

.site-nav,
.footer-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px;
}

.site-nav a,
.footer-links a,
.mini-link {
  color: var(--muted);
}

.site-nav a[aria-current="page"] {
  color: var(--text);
  font-weight: 700;
}

.lang-switch {
  display: inline-flex;
  align-items: center;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.7);
}

.lang-button {
  min-height: 34px;
  padding: 0 14px;
  border: none;
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
}

.lang-button.active {
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: #fff;
}

.site-main,
.policy-main,
.support-main {
  display: grid;
  gap: 28px;
}

.hero,
.page-hero,
.statement,
.panel,
.support-card,
.info-card {
  border: 1px solid var(--line);
  border-radius: 28px;
  background: var(--surface);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow);
}

.hero {
  display: grid;
  grid-template-columns: 1.35fr 0.9fr;
  gap: 24px;
  padding: 32px;
}

.hero-copy h1,
.page-hero h1,
.statement h2,
.policy-section h2,
.support-card h2,
.panel h2,
.info-card h2 {
  margin: 0 0 12px;
  font-family: "Iowan Old Style", "Palatino Linotype", Georgia, serif;
  line-height: 1.08;
}

.hero-copy h1 {
  font-size: clamp(2.2rem, 4vw, 4.4rem);
  max-width: 12ch;
}

.page-hero {
  padding: 28px 32px;
}

.page-hero h1 {
  font-size: clamp(2rem, 3vw, 3.2rem);
}

.hero-card,
.info-card,
.panel,
.support-card,
.policy-section,
.statement {
  padding: 24px;
}

.hero-card {
  border-radius: 24px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(248, 244, 237, 0.95));
  border: 1px solid rgba(20, 33, 42, 0.08);
}

.eyebrow {
  margin: 0 0 10px;
  font-size: 0.76rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 700;
}

.lead {
  max-width: 62ch;
  font-size: 1.05rem;
  line-height: 1.75;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.16s ease, opacity 0.16s ease, border-color 0.16s ease;
}

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

.button:disabled {
  cursor: not-allowed;
  opacity: 0.7;
  transform: none;
}

.button-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: #fff;
}

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

.section-grid,
.simple-columns {
  display: grid;
  gap: 18px;
}

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

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

.statement {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 20px;
}

.statement-copy {
  display: grid;
  gap: 12px;
}

.feature-list,
.compact-list,
.number-list {
  margin: 0;
  padding-left: 20px;
  line-height: 1.75;
}

.compact-list {
  margin-bottom: 16px;
}

.support-layout {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.stack-form {
  display: grid;
  gap: 14px;
}

.stack-form label {
  display: grid;
  gap: 8px;
}

.stack-form input,
.stack-form select,
.stack-form textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid rgba(20, 33, 42, 0.14);
  border-radius: 16px;
  background: var(--surface-strong);
  color: var(--text);
}

.stack-form textarea {
  resize: vertical;
}

.inline-note {
  margin-top: 14px;
  padding: 12px 14px;
  border-radius: 16px;
  background: rgba(20, 33, 42, 0.05);
  color: var(--muted);
}

.inline-note.error {
  background: rgba(153, 27, 27, 0.08);
  color: #991b1b;
}

.inline-note.success {
  background: rgba(21, 128, 61, 0.1);
  color: #166534;
}

.result-card {
  margin-top: 14px;
  padding: 16px;
  border-radius: 18px;
  background: rgba(15, 118, 110, 0.06);
  border: 1px solid rgba(15, 118, 110, 0.12);
  display: grid;
  gap: 12px;
}

.result-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px 16px;
}

.result-row {
  display: grid;
  gap: 4px;
}

.result-row strong {
  font-size: 0.88rem;
}

.result-row code,
.mono {
  font-family: "SF Mono", "IBM Plex Mono", "Roboto Mono", monospace;
  word-break: break-all;
}

.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-size: 0.88rem;
}

.attachments-list,
.timeline-list {
  display: grid;
  gap: 10px;
}

.attachments-list a,
.timeline-item,
.info-card p,
.panel p,
.policy-block p,
.policy-section p,
.hero-card p {
  line-height: 1.75;
}

.timeline-item {
  padding: 12px 14px;
  border-radius: 14px;
  background: rgba(20, 33, 42, 0.04);
}

.policy-main {
  gap: 20px;
}

.policy-section {
  display: grid;
  gap: 14px;
}

.policy-block {
  display: grid;
  gap: 8px;
}

.policy-block h3 {
  margin: 0;
}

.site-footer {
  margin-top: 28px;
  padding: 22px 0 4px;
  border-top: 1px solid var(--line);
  color: var(--muted);
}

@media (max-width: 900px) {
  .hero,
  .statement,
  .support-layout,
  .simple-columns,
  .section-grid {
    grid-template-columns: 1fr;
  }

  .site-header,
  .site-footer {
    flex-direction: column;
    align-items: flex-start;
  }

  .header-right,
  .site-nav,
  .footer-links,
  .actions {
    width: 100%;
  }

  .header-right {
    justify-content: flex-start;
  }
}

@media (max-width: 640px) {
  .site-shell {
    width: min(100% - 20px, 1120px);
    padding-top: 18px;
  }

  .hero,
  .page-hero,
  .support-card,
  .info-card,
  .panel,
  .policy-section,
  .statement {
    padding: 18px;
    border-radius: 22px;
  }

  .result-grid {
    grid-template-columns: 1fr;
  }
}