.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  padding-top: var(--space-2);
}

.header-shell {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  justify-content: space-between;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow-soft);
  padding: 0.72rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-weight: 600;
  white-space: nowrap;
}

.site-nav {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  overflow-x: auto;
  padding-inline: 0.25rem;
}

.nav-link {
  color: var(--text-soft);
  padding: 0.46rem 0.78rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 0.9rem;
  white-space: nowrap;
  transition: background 140ms ease, border-color 140ms ease, color 140ms ease;
}

.nav-link:hover,
.nav-link:focus-visible,
.nav-link.is-current {
  color: var(--text-main);
  border-color: var(--line);
  background: var(--surface-strong);
}

.site-footer {
  margin-top: var(--space-5);
  padding: var(--space-4) 0;
}

.footer-grid {
  display: grid;
  gap: var(--space-3);
  border-top: 1px solid var(--line);
  padding-top: var(--space-3);
}

.footer-brand {
  color: var(--text-main);
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.footer-muted {
  color: var(--text-faint);
  font-size: 0.94rem;
  max-width: 42ch;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.footer-links a {
  color: var(--text-soft);
  background: var(--surface-muted);
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 0.84rem;
  padding: 0.43rem 0.68rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  padding: var(--space-4);
}

.glass {
  backdrop-filter: blur(16px);
}

.card-title {
  color: var(--text-main);
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.card-copy {
  font-size: 0.93rem;
}

.card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2);
}

.tool-card,
.hub-card,
.guide-card,
.content-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  border-color: rgba(96, 122, 160, 0.2);
}

.card-topline {
  font-size: 0.72rem;
  color: var(--text-faint);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.card-link {
  color: var(--text-main);
  font-weight: 600;
  font-size: 1rem;
  line-height: 1.28;
}

.card-link:hover,
.card-link:focus-visible {
  color: color-mix(in srgb, var(--accent) 58%, #1a2438 42%);
}

.card-desc {
  font-size: 0.9rem;
  color: var(--text-soft);
}

.card-icon {
  width: 2rem;
  height: 2rem;
  border-radius: 0.72rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: color-mix(in srgb, var(--accent) 68%, #17305d 32%);
  background: var(--accent-soft);
  border: 1px solid color-mix(in srgb, var(--accent) 28%, #dce6f7 72%);
}

.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.25rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--surface-strong);
  color: var(--text-soft);
  font-size: 0.75rem;
  line-height: 1;
  padding: 0.38rem 0.58rem;
}

.badge.tier-gold {
  border-color: rgba(199, 150, 59, 0.35);
  color: #8a5a00;
  background: rgba(252, 246, 224, 0.82);
}

.badge.tier-silver {
  border-color: rgba(118, 133, 163, 0.35);
  color: #4e5f80;
  background: rgba(239, 244, 251, 0.84);
}

.badge.tier-bronze {
  border-color: rgba(164, 117, 84, 0.34);
  color: #7f4626;
  background: rgba(247, 237, 231, 0.82);
}

.badge-large {
  min-height: 2rem;
  min-width: 4.7rem;
  font-size: 0.88rem;
  padding: 0.52rem 0.92rem;
  font-weight: 600;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  border-radius: 999px;
  padding: 0.64rem 1rem;
  border: 1px solid transparent;
  font-weight: 500;
  font-size: 0.9rem;
  cursor: pointer;
  transition: transform 140ms ease, box-shadow 140ms ease, filter 140ms ease, background 140ms ease, border-color 140ms ease;
}

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

.btn:active {
  transform: translateY(0);
  filter: brightness(0.99);
}

.btn:focus-visible,
.pill-btn:focus-visible,
.tab-btn:focus-visible,
.filter-btn:focus-visible,
.icon-btn:focus-visible,
.modal-close:focus-visible,
.input:focus-visible,
.select:focus-visible,
.textarea:focus-visible {
  outline: none;
  border-color: color-mix(in srgb, var(--accent) 54%, #8da6ce 46%);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent) 22%, #d9e4f8 78%);
}

.btn-primary {
  color: #fff;
  background: linear-gradient(138deg, var(--accent), var(--accent2));
  box-shadow: 0 9px 16px color-mix(in srgb, var(--accent) 22%, transparent 78%);
}

.btn-primary:hover {
  filter: brightness(1.02);
}

.btn-ghost {
  color: var(--text-main);
  background: var(--surface-strong);
  border-color: var(--line);
}

.btn-compact {
  font-size: 0.82rem;
  padding: 0.52rem 0.75rem;
}

.btn-sm {
  padding: 0.46rem 0.84rem;
  font-size: 0.84rem;
}

.tabs,
.filter-row,
.unit-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.28rem;
  border-radius: 999px;
  background: var(--surface-muted);
  border: 1px solid var(--line);
}

.tab-btn,
.filter-btn,
.pill-btn {
  border-radius: 999px;
  border: 1px solid transparent;
  color: var(--text-soft);
  font-size: 0.86rem;
  padding: 0.43rem 0.76rem;
  cursor: pointer;
  background: transparent;
  transition: color 140ms ease, background 140ms ease, transform 140ms ease;
}

.tab-btn.is-active,
.filter-btn.is-active,
.pill-btn.is-active {
  color: var(--text-main);
  background: var(--surface-strong);
  border-color: var(--line);
}

.tabs-underline {
  background: transparent;
  border: 0;
  border-radius: 0;
  border-bottom: 1px solid rgba(112, 136, 168, 0.24);
  padding: 0;
  gap: 0.4rem;
}

.tabs-underline .tab-btn {
  padding: 0.5rem 0.2rem;
  border-radius: 0;
  border: 0;
  position: relative;
}

.tabs-underline .tab-btn::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  border-radius: 99px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  opacity: 0;
  transform: scaleX(0.45);
  transition: opacity 140ms ease, transform 140ms ease;
}

.tabs-underline .tab-btn.is-active {
  background: transparent;
}

.tabs-underline .tab-btn.is-active::after {
  opacity: 1;
  transform: scaleX(1);
}

.tab-panel {
  display: none;
  margin-top: var(--space-3);
}

.tab-panel.is-active {
  display: block;
}

.hero-actions {
  margin-top: var(--space-3);
  display: flex;
  flex-wrap: wrap;
  gap: 0.58rem;
}

.benefits-row {
  margin-top: var(--space-3);
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.5rem;
}

.benefit-pill {
  background: var(--surface-strong);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 0.56rem;
  font-size: 0.82rem;
  color: var(--text-soft);
  text-align: center;
}

.tool-chips {
  margin-top: 0.8rem;
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.chip {
  font-size: 0.74rem;
  color: var(--text-soft);
  border: 1px solid color-mix(in srgb, var(--accent) 24%, #ccd9ec 76%);
  background: color-mix(in srgb, var(--accent-soft) 72%, #ffffff 28%);
  border-radius: 999px;
  padding: 0.34rem 0.58rem;
}

.form-grid {
  display: grid;
  gap: var(--space-2);
  margin-top: var(--space-3);
}

.field-section {
  border: 1px solid color-mix(in srgb, var(--accent) 14%, #d6e1f3 86%);
  border-radius: var(--radius-sm);
  padding: 0.82rem;
  background: rgba(255, 255, 255, 0.64);
}

.field-section + .field-section {
  margin-top: 0.72rem;
}

.field-section-title {
  margin: 0 0 0.58rem;
  color: var(--text-main);
  font-size: 0.83rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.field-section-body {
  display: grid;
  gap: 0.66rem;
}

.field-row {
  display: grid;
  gap: 0.3rem;
}

.field-row label {
  color: var(--text-main);
  font-weight: 500;
  font-size: 0.88rem;
}

.field-row small {
  color: var(--text-faint);
  font-size: 0.77rem;
  line-height: 1.4;
}

.input,
.select,
.textarea {
  border-radius: var(--radius-xs);
  border: 1px solid var(--line-strong);
  background: rgba(255, 255, 255, 0.88);
  color: var(--text-main);
  min-height: 2.65rem;
  padding: 0.61rem 0.72rem;
}

.textarea {
  min-height: 4.5rem;
}

.form-actions {
  margin-top: var(--space-3);
  display: flex;
  justify-content: flex-start;
}

.result-shell {
  display: grid;
  gap: 0.72rem;
  margin-inline: auto;
  width: min(100%, 420px);
}

.result-card {
  border-radius: 22px;
  border: 1px solid color-mix(in srgb, var(--accent) 28%, #d4e2f5 72%);
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 12px 28px color-mix(in srgb, var(--accent) 12%, transparent 88%);
  padding: 0.92rem;
}

.result-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.45rem;
}

.result-checkin {
  font-size: 0.72rem;
  color: var(--text-soft);
  padding: 0.3rem 0.56rem;
  border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--accent) 22%, #d8e4f5 78%);
  background: color-mix(in srgb, var(--accent-soft) 58%, #ffffff 42%);
  white-space: nowrap;
}

.result-primary-wrap {
  margin-top: 0.66rem;
}

.result-primary {
  margin-top: 0;
  font-size: clamp(1.9rem, 8.4vw, 2.4rem);
  color: color-mix(in srgb, var(--accent) 36%, #1a2438 64%);
  font-weight: 600;
  line-height: 1.08;
  word-break: break-word;
}

.result-unit {
  font-size: clamp(0.95rem, 3.8vw, 1.12rem);
  color: var(--text-soft);
  font-weight: 500;
}

.result-sub {
  margin-top: 0.34rem;
  font-size: 0.9rem;
}

.result-stats-grid {
  margin-top: 0.66rem;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.5rem;
}

.result-stat {
  border-radius: var(--radius-xs);
  border: 1px solid rgba(111, 136, 171, 0.22);
  background: rgba(255, 255, 255, 0.75);
  padding: 0.54rem;
}

.result-stat-key {
  font-size: 0.74rem;
  color: var(--text-faint);
}

.result-stat-value {
  margin-top: 0.2rem;
  font-size: 0.84rem;
  color: var(--text-main);
  font-weight: 600;
}

.confidence {
  margin-top: 0.72rem;
}

.confidence-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.28rem;
}

.confidence-head span {
  font-size: 0.74rem;
  color: var(--text-faint);
}

.confidence-bars {
  display: grid;
  grid-template-columns: repeat(10, minmax(0, 1fr));
  gap: 0.26rem;
}

.confidence-bar {
  height: 0.4rem;
  border-radius: 999px;
  border: 1px solid rgba(129, 147, 172, 0.24);
  background: rgba(217, 227, 243, 0.42);
}

.confidence-bar.is-on {
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  border-color: color-mix(in srgb, var(--accent) 30%, transparent 70%);
}

.result-caption {
  margin-top: 0.72rem;
  font-size: 0.83rem;
  color: var(--text-soft);
}

.action-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.45rem;
}

.action-label {
  font-size: 0.76rem;
  color: var(--text-faint);
}

.share-drawer-wrap {
  border-top: 1px solid var(--line);
  padding-top: 0.62rem;
}

.share-drawer {
  margin-top: 0.56rem;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(112, 136, 170, 0.2);
  padding: 0.6rem;
  background: rgba(255, 255, 255, 0.7);
}

.share-drawer[hidden] {
  display: none;
}

.share-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.44rem;
  margin-top: 0.5rem;
}

.icon-btn {
  border-radius: 999px;
  padding: 0.44rem 0.8rem;
  border: 1px solid var(--line);
  background: var(--surface-strong);
  cursor: pointer;
  color: var(--text-soft);
  font-size: 0.8rem;
  transition: transform 140ms ease;
}

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

.modal-root {
  position: fixed;
  inset: 0;
  z-index: 120;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 140ms ease, visibility 140ms ease;
}

.modal-root.is-open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(8, 16, 30, 0.42);
}

.modal-shell {
  position: relative;
  z-index: 2;
  width: min(96vw, 480px);
  max-height: min(90vh, 760px);
  margin: 5vh auto;
  display: flex;
  flex-direction: column;
  border-radius: var(--radius-lg);
  background: rgba(248, 251, 255, 0.97);
  border: 1px solid var(--line-strong);
  box-shadow: 0 24px 56px rgba(8, 20, 48, 0.28);
  overflow: hidden;
  transform: translateY(8px) scale(0.98);
  transition: transform 150ms ease;
}

.modal-root.is-open .modal-shell {
  transform: translateY(0) scale(1);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.78rem 0.9rem;
  border-bottom: 1px solid var(--line);
}

.modal-title {
  color: var(--text-main);
  font-size: 0.95rem;
  font-weight: 600;
}

.modal-close {
  width: 1.9rem;
  height: 1.9rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: #fff;
  cursor: pointer;
  transition: transform 120ms ease;
}

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

.modal-content {
  overflow: auto;
  padding: 0.84rem;
}

.toast-stack {
  position: fixed;
  left: 50%;
  bottom: 1.1rem;
  transform: translateX(-50%);
  z-index: 150;
  display: grid;
  gap: 0.4rem;
}

.toast {
  color: #fff;
  background: rgba(11, 23, 44, 0.92);
  border-radius: 999px;
  font-size: 0.82rem;
  padding: 0.42rem 0.72rem;
}

@media (hover: hover) and (pointer: fine) {
  .tool-card:hover,
  .hub-card:hover,
  .guide-card:hover,
  .content-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 20px 34px rgba(18, 35, 68, 0.14);
    transition: transform 160ms ease, box-shadow 160ms ease;
  }
}

@media (min-width: 700px) {
  .card-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-3);
  }

  .action-row {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .footer-grid {
    grid-template-columns: 1.2fr 1fr;
    align-items: end;
  }

  .result-stats-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 960px) {
  .card-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}


/* Breadcrumbs */
.breadcrumbs { padding: 10px 0 0; }
.breadcrumbs .container { display:flex; flex-wrap:wrap; gap:8px; align-items:center; }
.breadcrumbs a, .breadcrumbs span { font-size: 13px; color: var(--muted); text-decoration:none; }
.breadcrumbs a:hover { text-decoration: underline; }
.breadcrumbs .sep { opacity:.6; }

/* Rich content */
.rich-body h2 { margin-top: 18px; }
.rich-body h3 { margin-top: 14px; }
.rich-body p { line-height: 1.65; }
.rich-body .bullet { margin: 10px 0 14px 18px; }
.rich-body .bullet li { margin: 6px 0; }
.table-wrap { overflow-x:auto; margin: 12px 0 18px; border-radius: 16px; }
.table-wrap table { width:100%; border-collapse: collapse; min-width: 520px; }
.table-wrap th, .table-wrap td { padding: 10px 12px; border-bottom: 1px solid rgba(255,255,255,.08); }
.table-wrap th { text-align:left; font-weight:700; }


/* FAQ */
.faq{padding:18px}
.faq h2{margin:0 0 10px;font-size:1.1rem}
.faq details{border-top:1px solid var(--border);padding:10px 0}
.faq details:first-of-type{border-top:none}
.faq summary{cursor:pointer;list-style:none;font-weight:600;display:flex;align-items:center;justify-content:space-between;gap:10px}
.faq summary::-webkit-details-marker{display:none}
.faq summary .chev{transition:transform .15s ease;opacity:.7}
.faq details[open] summary .chev{transform:rotate(90deg)}
.faq .answer{margin-top:8px;color:var(--text-muted);line-height:1.6}