:root {
  --bg: #f4efe6;
  --paper: rgba(255, 252, 246, 0.92);
  --panel: rgba(255, 248, 238, 0.78);
  --ink: #1d1a16;
  --muted: #655b4d;
  --accent: #bb432e;
  --accent-deep: #7f2413;
  --accent-soft: rgba(187, 67, 46, 0.12);
  --line: rgba(33, 27, 20, 0.12);
  --shadow: 0 18px 40px rgba(48, 33, 16, 0.08);
  --radius-xl: 28px;
  --radius-lg: 20px;
  --radius-md: 14px;
  --sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: var(--sans);
  background:
    radial-gradient(circle at top left, rgba(193, 95, 59, 0.16), transparent 28%),
    radial-gradient(circle at top right, rgba(38, 75, 64, 0.12), transparent 24%),
    linear-gradient(180deg, #f9f5ee 0%, #f0e7da 100%);
}

a {
  color: inherit;
}

.page-shell {
  display: grid;
  grid-template-columns: 320px minmax(0, 1fr);
  gap: 24px;
  width: min(1500px, calc(100% - 48px));
  margin: 24px auto;
}

.rail {
  position: relative;
}

.rail-inner {
  position: sticky;
  top: 24px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background: rgba(255, 250, 244, 0.82);
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.rail-kicker,
.section-kicker,
.eyebrow,
.card-tag {
  margin: 0 0 10px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 12px;
  font-weight: 800;
  color: var(--accent);
}

.rail-title {
  margin: 0 0 12px;
  font-family: var(--serif);
  font-size: 34px;
  line-height: 1.1;
}

.rail-copy,
.section-head p,
.hero-copy,
.card p,
.faq-item p,
.timeline-item p,
.source-card li,
.checklist label {
  color: var(--muted);
  line-height: 1.72;
}

.toc {
  display: grid;
  gap: 8px;
  margin: 28px 0;
}

.toc a {
  padding: 10px 12px;
  border-radius: 999px;
  text-decoration: none;
  border: 1px solid transparent;
  transition: 180ms ease;
}

.toc a:hover,
.toc a:focus-visible {
  outline: none;
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.62);
}

.rail-note {
  padding: 18px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(187, 67, 46, 0.12), rgba(56, 89, 73, 0.12));
}

.rail-note p {
  margin: 0 0 8px;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-deep);
}

.content {
  display: grid;
  gap: 24px;
}

.hero,
.section {
  padding: 30px;
  border-radius: var(--radius-xl);
  border: 1px solid var(--line);
  background: var(--paper);
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.5fr 0.9fr;
  gap: 24px;
  align-items: end;
}

.hero h2 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(40px, 6vw, 72px);
  line-height: 1.04;
  max-width: 12ch;
}

.hero-compact h2 {
  max-width: 16ch;
  font-size: clamp(34px, 5vw, 58px);
}

.hero-grid-single {
  grid-template-columns: 1fr;
}

.hero-copy {
  max-width: 70ch;
  margin: 20px 0 0;
  font-size: 17px;
}

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

.stat {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.72), rgba(255, 247, 235, 0.76));
}

.stat span {
  color: var(--muted);
  font-size: 14px;
}

.stat strong {
  font-family: var(--serif);
  font-size: 34px;
}

.toolbar {
  display: grid;
  gap: 16px;
  margin-top: 28px;
}

.decoder-shell {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 18px;
}

.decoder-input-panel,
.decoder-result-panel {
  display: grid;
  gap: 16px;
}

.decoder-field {
  display: grid;
  gap: 10px;
}

.decoder-field span {
  font-size: 13px;
  font-weight: 700;
  color: var(--muted);
}

.decoder-field textarea {
  min-height: 260px;
  resize: vertical;
  padding: 18px;
  font: inherit;
  line-height: 1.65;
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 22px;
  outline: none;
  background: rgba(255, 255, 255, 0.8);
}

.decoder-field textarea:focus {
  border-color: rgba(187, 67, 46, 0.42);
  box-shadow: 0 0 0 4px rgba(187, 67, 46, 0.08);
}

.decoder-chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.tag-list,
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.decoder-chip,
.lang-btn {
  appearance: none;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 10px 14px;
  font: inherit;
  font-weight: 700;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.72);
  cursor: pointer;
  transition: 180ms ease;
}

.decoder-chip:hover,
.lang-btn:hover,
.decoder-chip:focus-visible,
.lang-btn:focus-visible {
  outline: none;
  transform: translateY(-1px);
  border-color: rgba(187, 67, 46, 0.42);
}

.decoder-card {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(255, 253, 248, 0.82), rgba(255, 246, 235, 0.9));
}

.decoder-card h4 {
  margin: 0 0 12px;
  font-size: 26px;
  line-height: 1.28;
}

.decoder-card p,
.decoder-card li,
.template-note {
  color: var(--muted);
  line-height: 1.72;
}

.decoder-card ul {
  margin: 0;
  padding-left: 20px;
}

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

.decoder-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  margin-top: 16px;
}

.decoder-meta span,
.decoder-meta a,
.secondary-pill {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 0 14px;
  border-radius: 999px;
  background: rgba(187, 67, 46, 0.1);
  color: var(--accent-deep);
  text-decoration: none;
  font-weight: 700;
}

.decoder-meta a {
  background: rgba(35, 70, 58, 0.12);
}

.secondary-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.decoder-secondary {
  background: rgba(255, 255, 255, 0.64);
}

.search-field {
  display: grid;
  gap: 8px;
}

.search-field span {
  font-size: 13px;
  font-weight: 700;
  color: var(--muted);
}

.search-field input {
  width: 100%;
  padding: 16px 18px;
  font: inherit;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid var(--line);
  border-radius: 999px;
  outline: none;
}

.search-field input:focus {
  border-color: rgba(187, 67, 46, 0.42);
  box-shadow: 0 0 0 4px rgba(187, 67, 46, 0.08);
}

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.filter,
.copy-btn {
  appearance: none;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 11px 16px;
  font: inherit;
  font-weight: 700;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.76);
  cursor: pointer;
  transition: 180ms ease;
}

.filter:hover,
.copy-btn:hover,
.filter:focus-visible,
.copy-btn:focus-visible {
  outline: none;
  transform: translateY(-1px);
  border-color: rgba(187, 67, 46, 0.42);
}

.filter.is-active,
.copy-btn {
  color: #fff;
  background: linear-gradient(135deg, var(--accent), var(--accent-deep));
}

.copy-btn {
  white-space: nowrap;
}

.builder-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.admin-grid {
  grid-template-columns: 0.9fr 1.1fr;
}

.builder-select,
.builder-textarea {
  width: 100%;
  padding: 16px 18px;
  font: inherit;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid var(--line);
  border-radius: 18px;
  outline: none;
}

.builder-textarea {
  min-height: 132px;
  resize: vertical;
}

.builder-select:focus,
.builder-textarea:focus {
  border-color: rgba(187, 67, 46, 0.42);
  box-shadow: 0 0 0 4px rgba(187, 67, 46, 0.08);
}

.packet-preview h5,
.card h5 {
  margin: 16px 0 8px;
  font-size: 15px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-deep);
}

.packet-notes {
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px dashed var(--line);
}

.card a,
.faq-item a {
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.section-head {
  margin-bottom: 24px;
}

.section-head h3 {
  margin: 0 0 10px;
  font-family: var(--serif);
  font-size: clamp(28px, 3vw, 42px);
}

.diagnosis-grid,
.kit-grid,
.rejection-grid,
.sources-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.faq-list,
.template-list,
.timeline,
.checklist {
  display: grid;
  gap: 16px;
}

.card,
.faq-item,
.template-card,
.source-card,
.timeline-item,
.prep-box {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--panel);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.card,
.faq-item,
.source-card,
.prep-box {
  padding: 22px;
}

.card h4,
.faq-item h4,
.template-card h4,
.timeline-item h4,
.source-card h4,
.prep-box h4 {
  margin: 0 0 12px;
  font-size: 22px;
  line-height: 1.35;
}

.card ul,
.source-card ul,
.prep-box ul {
  margin: 0;
  padding-left: 20px;
  color: var(--muted);
  line-height: 1.7;
}

.warning {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
  color: var(--accent-deep);
  font-weight: 700;
}

.prep-box pre,
.template-card pre {
  overflow-x: auto;
  margin: 0;
  padding: 18px;
  border-radius: var(--radius-md);
  background: #1f1d19;
  color: #f5efdf;
  line-height: 1.62;
  font-size: 13px;
}

.template-card {
  padding: 22px;
}

.template-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 18px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.58);
}

.lang-toggle {
  display: inline-flex;
  gap: 10px;
  flex-wrap: wrap;
}

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

.template-note {
  margin: 0;
  max-width: 42ch;
}

.template-head {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
}

.timeline-item {
  display: grid;
  grid-template-columns: 100px minmax(0, 1fr);
  gap: 18px;
  align-items: start;
  padding: 22px;
}

.timeline-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(187, 67, 46, 0.16), rgba(35, 70, 58, 0.16));
  color: var(--accent-deep);
  font-weight: 800;
}

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

.checklist label {
  display: flex;
  gap: 12px;
  align-items: start;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.56);
}

.checklist input {
  margin-top: 4px;
  accent-color: var(--accent);
}

.faq-item strong,
.card strong,
.source-card strong,
.prep-box strong {
  color: var(--ink);
}

.source-card li + li {
  margin-top: 8px;
}

.source-card a {
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.hidden-by-filter {
  display: none !important;
}

.toast {
  position: fixed;
  right: 24px;
  bottom: 24px;
  padding: 14px 18px;
  border-radius: 999px;
  background: #171511;
  color: #fff;
  font-weight: 700;
  opacity: 0;
  transform: translateY(16px);
  pointer-events: none;
  transition: 180ms ease;
}

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

@media (max-width: 1120px) {
  .page-shell {
    grid-template-columns: 1fr;
  }

  .rail-inner {
    position: static;
  }

  .hero-grid,
  .decoder-shell,
  .decoder-grid,
  .builder-grid,
  .admin-grid,
  .diagnosis-grid,
  .kit-grid,
  .rejection-grid,
  .sources-grid,
  .checklist {
    grid-template-columns: 1fr;
  }
}

@media print {
  body {
    background: #fff;
  }

  .rail,
  .template-toolbar,
  .copy-btn,
  .toast,
  .builder-grid > .card:first-child,
  .tag-cloud,
  .lang-toggle,
  .toc {
    display: none !important;
  }

  .page-shell,
  .content,
  .builder-grid,
  .admin-grid {
    display: block;
    width: 100%;
    margin: 0;
  }

  .hero,
  .section,
  .card,
  .faq-item,
  .source-card,
  .template-card,
  .prep-box {
    box-shadow: none;
    border: 0;
    background: #fff;
    padding: 0;
  }

  .packet-preview {
    break-inside: avoid;
  }
}

@media (max-width: 720px) {
  .page-shell {
    width: min(100% - 24px, 100%);
    margin: 12px auto 24px;
    gap: 12px;
  }

  .hero,
  .section,
  .rail-inner {
    padding: 20px;
    border-radius: 22px;
  }

  .hero h2 {
    max-width: none;
    font-size: 42px;
  }

  .template-head,
  .template-toolbar,
  .timeline-item {
    grid-template-columns: 1fr;
  }

  .template-toolbar {
    flex-direction: column;
    align-items: start;
  }

  .timeline-item {
    padding: 18px;
  }

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

  .decoder-chip-row,
  .lang-toggle {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .filter,
  .copy-btn,
  .decoder-chip,
  .lang-btn {
    width: 100%;
    justify-content: center;
  }
}