:root {
  --bg: #f6f1e8;
  --bg-strong: #ebe1d0;
  --surface: rgba(255, 252, 247, 0.88);
  --surface-strong: #fffdf8;
  --surface-muted: #f7f1e7;
  --text: #151515;
  --muted: #636058;
  --line: rgba(21, 21, 21, 0.14);
  --accent: #b98245;
  --accent-soft: #f1e2c1;
  --warm: #d6a84f;
  --warm-soft: rgba(214, 168, 79, 0.18);
  --hero-bg: #090b0f;
  --hero-surface: #121720;
  --hero-line: rgba(245, 241, 232, 0.14);
  --text-on-dark: #f5f1e8;
  --muted-on-dark: #aaa399;
  --success: #1f6f50;
  --warning: #8a5a00;
  --shadow: 0 24px 60px rgba(17, 28, 38, 0.08);
  --radius-xl: 28px;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 10px;
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
  --font-mono: "IBM Plex Mono", "SFMono-Regular", "SF Mono", Menlo, Consolas, monospace;
}

* {
  box-sizing: border-box;
}

html {
  color-scheme: light;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at top left, rgba(17, 75, 95, 0.1), transparent 28%),
    radial-gradient(circle at top right, rgba(181, 101, 59, 0.08), transparent 22%),
    linear-gradient(180deg, #f7f2ea 0%, #f4efe6 100%);
  color: var(--text);
  font-family: var(--font-sans);
  line-height: 1.6;
}

body[data-page="home"] {
  background:
    radial-gradient(circle at 15% 0%, rgba(214, 168, 79, 0.18), transparent 26%),
    radial-gradient(circle at 88% 18%, rgba(185, 130, 69, 0.12), transparent 28%),
    linear-gradient(180deg, var(--hero-bg) 0%, #11141b 46%, #f6f1e8 46%, #f6f1e8 100%);
}

body[data-page="home"]::before {
  background-image:
    linear-gradient(to right, rgba(245, 241, 232, 0.045) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(245, 241, 232, 0.045) 1px, transparent 1px);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(17, 75, 95, 0.035) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(17, 75, 95, 0.035) 1px, transparent 1px);
  background-size: 32px 32px;
  opacity: 0.7;
}

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

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

main {
  display: block;
}

.page-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 18px 0 calc(136px + env(safe-area-inset-bottom));
}

.system-strip {
  position: sticky;
  top: 0;
  z-index: 20;
  margin: 0 auto 14px;
  width: min(1180px, calc(100% - 32px));
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 252, 247, 0.92);
  backdrop-filter: blur(18px);
  box-shadow: 0 10px 24px rgba(17, 28, 38, 0.08);
}

.system-strip[hidden] {
  display: none;
}

.system-strip-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.system-strip-copy {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 12px;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.eyebrow.warm {
  background: var(--warm-soft);
  color: var(--warm);
}

.copy-muted {
  color: var(--muted);
  font-size: 0.94rem;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 20px;
  padding: 12px 0 28px;
}

.topbar-dark,
.topbar-dark .brand,
.topbar-dark .ghost-link {
  color: var(--text-on-dark);
}

.topbar-dark .brand-sub {
  color: var(--muted-on-dark);
}

.brand-lockup {
  display: grid;
  gap: 6px;
}

.brand {
  font-size: clamp(1.3rem, 2vw, 1.65rem);
  font-weight: 700;
  letter-spacing: -0.03em;
}

.brand-sub {
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 0 20px;
  border: 0;
  border-radius: 999px;
  background: var(--accent);
  color: #0d0f14;
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
  box-shadow: 0 18px 34px rgba(185, 130, 69, 0.2);
}

.button:hover,
.button:focus-visible {
  transform: translateY(-1px);
  box-shadow: 0 22px 36px rgba(185, 130, 69, 0.24);
}

.button-secondary {
  background: var(--surface-strong);
  color: var(--text);
  border: 1px solid var(--line);
  box-shadow: none;
}

.button-small {
  min-height: 38px;
  padding: 0 16px;
  font-size: 0.92rem;
}

.button-ghost {
  min-height: 42px;
  background: transparent;
  color: var(--accent);
  border: 1px dashed rgba(17, 75, 95, 0.35);
  box-shadow: none;
}

.button[disabled] {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.ghost-link {
  color: var(--accent);
  font-size: 0.95rem;
}

.hero {
  display: grid;
  grid-template-columns: 1.4fr 0.9fr;
  gap: 22px;
  align-items: stretch;
}

.card,
.hero-panel,
.hero-side,
.section-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background: var(--surface);
  box-shadow: var(--shadow);
  backdrop-filter: blur(20px);
}

.hero-panel,
.hero-side {
  padding: clamp(24px, 4vw, 40px);
}

.hero-dark .hero-panel,
.hero-dark .hero-side {
  border-color: var(--hero-line);
  background:
    linear-gradient(145deg, rgba(18, 23, 32, 0.96), rgba(9, 11, 15, 0.98)),
    radial-gradient(circle at top right, rgba(214, 168, 79, 0.18), transparent 36%);
  color: var(--text-on-dark);
  box-shadow: 0 34px 90px rgba(0, 0, 0, 0.28);
}

.hero-panel {
  position: relative;
  overflow: hidden;
}

.hero-panel::after {
  content: "";
  position: absolute;
  width: 220px;
  height: 220px;
  right: -80px;
  top: -80px;
  background: radial-gradient(circle, rgba(17, 75, 95, 0.16), transparent 68%);
}

.hero-title {
  margin: 16px 0 12px;
  font-size: clamp(2.25rem, 6vw, 4.6rem);
  line-height: 0.98;
  letter-spacing: -0.06em;
}

.hero-lead {
  margin: 0 0 26px;
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 40rem;
}

.hero-dark .hero-lead,
.on-dark {
  color: var(--muted-on-dark);
}

.hero-input-wrap {
  display: grid;
  gap: 16px;
}

.field-label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
}

.field-note {
  margin-top: 8px;
  color: var(--muted);
  font-size: 0.92rem;
}

.input,
.textarea,
.select {
  width: 100%;
  border: 1px solid rgba(23, 33, 43, 0.14);
  border-radius: var(--radius-lg);
  background: rgba(255, 253, 248, 0.96);
  color: var(--text);
  padding: 14px 16px;
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
}

.dark-input {
  border-color: var(--hero-line);
  background: rgba(245, 241, 232, 0.08);
  color: var(--text-on-dark);
}

.dark-input::placeholder {
  color: rgba(245, 241, 232, 0.48);
}

.textarea {
  min-height: 152px;
  resize: vertical;
}

.input:focus,
.textarea:focus,
.select:focus {
  outline: none;
  border-color: rgba(17, 75, 95, 0.48);
  box-shadow: 0 0 0 4px rgba(17, 75, 95, 0.08);
}

.chip-row,
.meta-row,
.cta-row,
.inline-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  scroll-margin-bottom: calc(148px + env(safe-area-inset-bottom));
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 40px;
  padding: 0 14px;
  border-radius: 999px;
  border: 1px solid rgba(17, 75, 95, 0.16);
  background: rgba(255, 255, 255, 0.66);
  color: var(--text);
  cursor: pointer;
}

.chip-dark {
  border-color: var(--hero-line);
  background: rgba(245, 241, 232, 0.08);
  color: var(--text-on-dark);
}

.chip.active {
  background: var(--accent);
  color: #0d0f14;
  border-color: transparent;
}

.meta-item {
  display: grid;
  gap: 4px;
  min-width: 150px;
}

.meta-label {
  color: var(--muted);
  font-size: 0.86rem;
}

.meta-value {
  font-family: var(--font-mono);
  font-size: 0.95rem;
}

.hero-side {
  display: grid;
  gap: 18px;
  align-content: start;
}

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

.side-title {
  margin: 0;
  font-size: 1.2rem;
  letter-spacing: -0.03em;
}

.stat-grid,
.card-grid,
.info-grid,
.standards-grid,
.two-column,
.three-column {
  display: grid;
  gap: 16px;
}

.stat-grid,
.three-column,
.card-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

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

.stat-card,
.info-card,
.mini-card,
.timeline-item,
.detail-card,
.quote-card,
.standard-card,
.account-card,
.disabled-card {
  padding: 18px;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(23, 33, 43, 0.1);
  background: rgba(255, 255, 255, 0.7);
}

.stat-dark,
.detail-dark {
  border-color: var(--hero-line);
  background: rgba(245, 241, 232, 0.075);
}

.stat-number {
  display: block;
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.04em;
  margin-bottom: 6px;
}

.section {
  margin-top: 26px;
}

.section-card {
  padding: clamp(22px, 4vw, 34px);
}

.light-workbench {
  background: rgba(255, 252, 247, 0.94);
}

.section-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}

.section-title {
  margin: 0;
  font-size: clamp(1.45rem, 3vw, 2rem);
  letter-spacing: -0.04em;
}

.section-copy {
  color: var(--muted);
  max-width: 34rem;
}

.lane-card,
.step-card,
.faq-card {
  padding: 20px;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(23, 33, 43, 0.12);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.78), rgba(247, 241, 231, 0.84));
}

.lane-card h3,
.step-card h3,
.faq-card h3 {
  margin: 0 0 10px;
  font-size: 1.08rem;
  letter-spacing: -0.02em;
}

.lane-card p,
.step-card p,
.faq-card p,
.mini-copy {
  margin: 0;
  color: var(--muted);
}

.code-pill {
  display: inline-flex;
  margin-bottom: 12px;
  padding: 4px 8px;
  border-radius: 999px;
  background: rgba(17, 75, 95, 0.08);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.78rem;
}

.code-pill.invert {
  background: rgba(245, 241, 232, 0.1);
  color: var(--warm);
}

.page-title {
  margin: 10px 0 10px;
  font-size: clamp(2rem, 5vw, 3.4rem);
  letter-spacing: -0.05em;
  line-height: 1.02;
}

.page-subtitle {
  margin: 0;
  color: var(--muted);
  max-width: 42rem;
}

.page-lead-card {
  padding: 24px;
  border-radius: var(--radius-xl);
  border: 1px solid var(--line);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.dark-lead {
  border-color: var(--hero-line);
  background:
    radial-gradient(circle at 86% 0%, rgba(214, 168, 79, 0.16), transparent 30%),
    linear-gradient(145deg, rgba(18, 23, 32, 0.98), rgba(9, 11, 15, 0.98));
  color: var(--text-on-dark);
}

.stack {
  display: grid;
  gap: 18px;
}

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

.form-grid .full {
  grid-column: 1 / -1;
}

.form-panel {
  display: grid;
  gap: 18px;
  padding: 18px;
  border: 1px solid rgba(23, 33, 43, 0.1);
  border-radius: var(--radius-xl);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.72), rgba(247, 241, 231, 0.82));
}

.question-number {
  color: rgba(185, 130, 69, 0.34);
  font-family: var(--font-mono);
  font-size: clamp(2.2rem, 6vw, 4rem);
  font-weight: 700;
  line-height: 0.8;
  letter-spacing: -0.08em;
}

.form-panel-heading {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.mini-title {
  margin: 0 0 4px;
  font-size: 1.08rem;
  letter-spacing: -0.02em;
}

.compact-textarea {
  min-height: 108px;
}

.radio-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.radio-card {
  display: flex;
  gap: 10px;
  padding: 14px;
  border: 1px solid rgba(23, 33, 43, 0.12);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.76);
}

.radio-card input {
  margin-top: 4px;
}

.radio-card strong {
  display: block;
  margin-bottom: 4px;
}

.checkbox-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.check-card {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  padding: 14px;
  border: 1px solid rgba(23, 33, 43, 0.12);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.76);
}

.check-card input {
  margin-top: 5px;
}

.confirm-card {
  background: rgba(17, 75, 95, 0.06);
  border-color: rgba(17, 75, 95, 0.16);
}

.check-card.full {
  grid-column: 1 / -1;
}

.followup-card {
  padding: 16px;
  border: 1px dashed rgba(185, 130, 69, 0.36);
  border-radius: var(--radius-lg);
  background: rgba(214, 168, 79, 0.08);
}

.followup-card[hidden] {
  display: none;
}

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

.progress-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(17, 75, 95, 0.08);
  color: var(--accent);
  font-size: 0.9rem;
}

.disabled-card {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.78), rgba(243, 239, 230, 0.92));
}

.disabled-card-header {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 10px;
  border-radius: 999px;
  background: rgba(17, 75, 95, 0.08);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.78rem;
}

.tag.warn {
  background: rgba(181, 101, 59, 0.1);
  color: var(--warm);
}

.tag.success {
  background: rgba(31, 111, 80, 0.12);
  color: var(--success);
}

.highlight-card,
.quote-primary {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(246, 241, 232, 0.98));
}

.four-grid,
.rule-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.boundary-card {
  padding: 20px;
  border-radius: var(--radius-xl);
  border: 1px solid var(--hero-line);
  background: #11141b;
  color: var(--text-on-dark);
}

.boundary-card .detail-list li {
  border-bottom-color: rgba(245, 241, 232, 0.12);
}

.detail-list,
.bullet-list,
.timeline {
  margin: 0;
  padding: 0;
  list-style: none;
}

.detail-list li,
.bullet-list li {
  padding: 10px 0;
  border-bottom: 1px solid rgba(23, 33, 43, 0.08);
}

.detail-list li:last-child,
.bullet-list li:last-child {
  border-bottom: 0;
}

.timeline {
  display: grid;
  gap: 12px;
}

.timeline-item {
  display: grid;
  gap: 6px;
}

.timeline-time {
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.86rem;
}

.quote-amount {
  font-size: clamp(2.2rem, 4vw, 3.2rem);
  letter-spacing: -0.06em;
  margin: 0;
}

.quote-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 16px;
}

.quote-table {
  width: 100%;
  border-collapse: collapse;
}

.quote-table th,
.quote-table td {
  padding: 12px 0;
  text-align: left;
  border-bottom: 1px solid rgba(23, 33, 43, 0.08);
}

.quote-table th {
  color: var(--muted);
  font-weight: 500;
}

.quote-table tr:last-child th,
.quote-table tr:last-child td {
  border-bottom: 0;
}

.notice {
  padding: 16px 18px;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(17, 75, 95, 0.16);
  background: rgba(17, 75, 95, 0.06);
}

.notice.warn {
  border-color: rgba(181, 101, 59, 0.18);
  background: rgba(181, 101, 59, 0.08);
}

.account-list {
  display: grid;
  gap: 12px;
}

.account-row {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(23, 33, 43, 0.08);
}

.account-row:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.mobile-nav {
  position: fixed;
  left: 50%;
  bottom: calc(18px + env(safe-area-inset-bottom));
  transform: translateX(-50%);
  z-index: 25;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
  width: min(720px, calc(100% - 20px));
  padding: 10px;
  border: 1px solid rgba(23, 33, 43, 0.12);
  border-radius: 24px;
  background: rgba(255, 252, 247, 0.92);
  backdrop-filter: blur(18px);
  box-shadow: 0 20px 40px rgba(17, 28, 38, 0.12);
}

.mobile-nav a {
  display: grid;
  justify-items: center;
  gap: 5px;
  padding: 10px 8px;
  border-radius: 16px;
  color: var(--muted);
  font-size: 0.84rem;
}

.mobile-nav a[aria-current="page"] {
  background: var(--accent);
  color: #0d0f14;
}

.nav-icon {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
}

.toast-stack {
  position: fixed;
  right: 16px;
  bottom: 104px;
  z-index: 30;
  display: grid;
  gap: 12px;
}

.toast {
  min-width: min(320px, calc(100vw - 32px));
  padding: 14px 16px;
  border-radius: 16px;
  background: rgba(23, 33, 43, 0.92);
  color: #f8f4ed;
  box-shadow: 0 18px 36px rgba(0, 0, 0, 0.18);
}

.toast[hidden] {
  display: none;
}

.footer-note {
  margin-top: 22px;
  color: var(--muted);
  font-size: 0.9rem;
}

[data-storage-mode]:empty {
  display: none;
}

.muted {
  color: var(--muted);
}

@media (max-width: 980px) {
  .hero,
  .quote-grid,
  .two-column,
  .three-column,
  .card-grid,
  .stat-grid,
  .four-grid,
  .rule-grid {
    grid-template-columns: 1fr;
  }

  .radio-grid,
  .checkbox-grid,
  .form-grid {
    grid-template-columns: 1fr;
  }

  .topbar {
    align-items: stretch;
    flex-direction: column;
  }

  .topbar-actions {
    justify-content: flex-start;
  }
}

@media (max-width: 720px) {
  .page-shell {
    width: min(100% - 20px, 1180px);
    padding-bottom: calc(164px + env(safe-area-inset-bottom));
  }

  .system-strip {
    width: min(100% - 20px, 1180px);
  }

  .system-strip-content,
  .section-heading,
  .account-row {
    align-items: flex-start;
    flex-direction: column;
  }

  .hero-panel,
  .hero-side,
  .section-card,
  .page-lead-card {
    padding: 22px 18px;
  }

  .hero-title,
  .page-title {
    max-width: 12ch;
  }

  .mobile-nav {
    bottom: calc(10px + env(safe-area-inset-bottom));
    width: calc(100% - 12px);
    border-radius: 20px;
  }

  .toast-stack {
    right: 10px;
    left: 10px;
    bottom: calc(108px + env(safe-area-inset-bottom));
  }

  .toast {
    min-width: auto;
  }
}