/* ═══════════════════════════════════════════════════════
   AI生意实验室 — Global Styles
   Rational lab / business analysis aesthetic.
   No marketing hype, no gradient hero, readable long-form.
   ═══════════════════════════════════════════════════════ */

/* ── Design Tokens ──────────────────────────────── */
:root {
  /* Paper palette — warm off-white base, ink-text */
  --color-paper: #faf8f5;
  --color-surface: #ffffff;
  --color-ink: #1a1815;
  --color-ink-muted: #4a4540;
  --color-ink-subtle: #78716c;
  --color-ink-faint: #a8a39c;

  /* Accent — teal/blue-green: analytical, calm, credible */
  --color-accent: #0f766e;
  --color-accent-light: #ccfbf1;
  --color-accent-hover: #115e59;
  --color-accent-muted: #5eead4;

  /* Severity / signal colors — subdued, not neon */
  --color-warn-bg: #fffbeb;
  --color-warn-border: #fcd34d;
  --color-warn-text: #92400e;

  --color-danger-bg: #fef2f2;
  --color-danger-border: #fecaca;
  --color-danger-text: #991b1b;

  --color-success-bg: #f0fdf4;
  --color-success-border: #bbf7d0;
  --color-success-text: #166534;

  --color-info-bg: #ecfeff;
  --color-info-border: #a5f3fc;
  --color-info-text: #155e75;

  /* Borders & dividers */
  --color-border: #e2ded8;
  --color-border-light: #ede9e3;

  /* Layout */
  --max-width: 700px;
  --font-sans: "Helvetica Neue", "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-mono: ui-monospace, "Cascadia Code", "Source Code Pro", Menlo, monospace;
}

/* ── Reset & Base ───────────────────────────────── */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 17px;
  line-height: 1.65;
  color: var(--color-ink);
  background: var(--color-paper);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2rem 1.25rem 4rem;
}

/* ── Typography ─────────────────────────────────── */
h1 {
  font-size: 1.6rem;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: 0;
  margin-bottom: 0.75rem;
  color: var(--color-ink);
}

h2 {
  font-size: 1.2rem;
  font-weight: 650;
  line-height: 1.35;
  margin-top: 2.25rem;
  margin-bottom: 0.75rem;
  color: var(--color-ink);
  letter-spacing: 0;
}

h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
  color: var(--color-ink);
}

p {
  margin-bottom: 0.9rem;
  color: var(--color-ink-muted);
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color 0.15s;
}
a:hover {
  color: var(--color-accent-hover);
  text-decoration: underline;
}

ul,
ol {
  margin-bottom: 0.9rem;
  padding-left: 1.5rem;
  color: var(--color-ink-muted);
}

li {
  margin-bottom: 0.3rem;
}

strong {
  color: var(--color-ink);
}

/* ── Tables ────────────────────────────────────── */
table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1.25rem;
  font-size: 0.88rem;
}

th,
td {
  border-bottom: 1px solid var(--color-border-light);
  padding: 0.6rem 0.7rem;
  text-align: left;
  vertical-align: top;
}

th {
  background: var(--color-paper);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-ink-subtle);
  border-bottom: 2px solid var(--color-border);
}

tr:nth-child(even) td {
  background: #faf9f7;
}

tr:hover td {
  background: #f5f2ed;
}

/* ── Blockquote ─────────────────────────────────── */
blockquote {
  border-left: 3px solid var(--color-accent-muted);
  padding: 0.65rem 1.1rem;
  margin: 1rem 0;
  color: var(--color-ink-subtle);
  background: #f8faf9;
  border-radius: 0 4px 4px 0;
}

/* ── Inline Code & Pre ──────────────────────────── */
code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: #f0ede8;
  color: #1a1815;
  padding: 0.15em 0.4em;
  border-radius: 3px;
}

pre {
  background: #1e1b18;
  color: #e7e2d8;
  padding: 1rem 1.1rem;
  border-radius: 6px;
  overflow-x: auto;
  margin-bottom: 1rem;
  font-size: 0.82rem;
  line-height: 1.55;
}

pre code {
  background: none;
  padding: 0;
  color: inherit;
}

/* ═══════════════════════════════════════════════════
   SITE HEADER
   ═══════════════════════════════════════════════════ */
.site-header {
  padding-bottom: 1.25rem;
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--color-border-light);
}

.site-header-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
}

.site-brand {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-ink);
  text-decoration: none;
  letter-spacing: 0;
}

.site-brand:hover {
  color: var(--color-accent);
  text-decoration: none;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem 1.15rem;
  font-size: 0.85rem;
}

.site-nav a {
  color: var(--color-ink-subtle);
  white-space: nowrap;
  text-decoration: none;
  font-weight: 500;
  transition: color 0.15s;
}

.site-nav a:hover {
  color: var(--color-ink);
  text-decoration: none;
}

.site-nav a.active {
  color: var(--color-accent);
  font-weight: 600;
}

/* ── Mobile nav ─────────────────────────────────── */
@media (max-width: 640px) {
  body {
    padding: 1.25rem 1rem 3rem;
  }

  .site-header-inner {
    flex-direction: column;
    gap: 0.5rem;
  }

  .site-nav {
    gap: 0.3rem 0.9rem;
    font-size: 0.82rem;
  }
}

/* ═══════════════════════════════════════════════════
   HOME PAGE
   ═══════════════════════════════════════════════════ */
.home-hero {
  padding: 1.5rem 0 1rem;
}

.home-hero h1 {
  font-size: 2rem;
  font-weight: 750;
  letter-spacing: 0;
  margin-bottom: 0.5rem;
}

.home-hero .tagline {
  font-size: 1.08rem;
  color: var(--color-ink-muted);
  max-width: 560px;
  line-height: 1.55;
  margin-bottom: 1.25rem;
}

.home-cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

/* ═══════════════════════════════════════════════════
   SECTION HEADINGS
   ═══════════════════════════════════════════════════ */
.section-heading {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--color-ink-faint);
  margin-top: 2.5rem;
  margin-bottom: 0.75rem;
  font-weight: 600;
}

/* ═══════════════════════════════════════════════════
   CARDS
   ═══════════════════════════════════════════════════ */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: 7px;
  padding: 1.15rem 1.25rem;
  margin-bottom: 0.85rem;
  transition: box-shadow 0.15s, border-color 0.15s;
}

.card:hover {
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.05);
}

.card h3 {
  margin-top: 0;
  margin-bottom: 0.3rem;
  font-size: 1rem;
}

.card p {
  margin-bottom: 0.5rem;
  font-size: 0.88rem;
}

.card p:last-child {
  margin-bottom: 0;
}

.card-alert {
  border-left: 3px solid var(--color-warn-border);
  background: var(--color-warn-bg);
  border-color: var(--color-warn-border);
}

/* ═══════════════════════════════════════════════════
   CATEGORY GRID CARDS
   ═══════════════════════════════════════════════════ */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 0.75rem;
}

@media (max-width: 640px) {
  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
  }
}

.cat-card {
  display: block;
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: 7px;
  padding: 1rem 1.1rem;
  text-decoration: none;
  color: var(--color-ink);
  transition: border-color 0.15s, box-shadow 0.15s;
}

.cat-card:hover {
  border-color: var(--color-accent);
  box-shadow: 0 1px 6px rgba(15, 118, 110, 0.08);
  text-decoration: none;
}

.cat-card h3 {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--color-accent);
  margin: 0 0 0.25rem;
  font-size: 0.95rem;
}

.cat-card h3::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  border-radius: 50%;
  flex-shrink: 0;
  opacity: 0.6;
}

.cat-card p {
  margin: 0;
  font-size: 0.82rem;
  color: var(--color-ink-subtle);
  line-height: 1.45;
}

/* ═══════════════════════════════════════════════════
   BADGES
   ═══════════════════════════════════════════════════ */
.badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.2em 0.6em;
  border-radius: 4px;
  white-space: nowrap;
  letter-spacing: 0.02em;
}

.badge-unverified { background: var(--color-warn-bg); color: var(--color-warn-text); border: 1px solid var(--color-warn-border); }
.badge-high-risk  { background: var(--color-danger-bg); color: var(--color-danger-text); border: 1px solid var(--color-danger-border); }
.badge-medium-risk { background: #fff7ed; color: #9a3412; border: 1px solid #fed7aa; }
.badge-low-risk    { background: var(--color-success-bg); color: var(--color-success-text); border: 1px solid var(--color-success-border); }
.badge-info        { background: var(--color-info-bg); color: var(--color-info-text); border: 1px solid var(--color-info-border); }

/* ═══════════════════════════════════════════════════
   DISCLAIMER BANNER
   ═══════════════════════════════════════════════════ */
.disclaimer {
  background: var(--color-warn-bg);
  border: 1px solid var(--color-warn-border);
  border-radius: 6px;
  padding: 0.65rem 1rem;
  font-size: 0.82rem;
  color: var(--color-warn-text);
  margin-bottom: 1.25rem;
  line-height: 1.5;
}

/* ═══════════════════════════════════════════════════
   ARTICLE META
   ═══════════════════════════════════════════════════ */
.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 0.9rem;
  margin-bottom: 1.25rem;
  font-size: 0.82rem;
  color: var(--color-ink-subtle);
}

.score-display {
  display: inline-flex;
  align-items: baseline;
  gap: 0.15rem;
}

.score-value {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-ink);
}

.score-max {
  font-size: 0.8rem;
  color: var(--color-ink-subtle);
}

/* ═══════════════════════════════════════════════════
   BUTTONS
   ═══════════════════════════════════════════════════ */
.btn {
  display: inline-block;
  padding: 0.55rem 1.25rem;
  border-radius: 6px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--color-accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--color-accent-hover);
  color: #fff;
  text-decoration: none;
}

.btn-outline {
  background: transparent;
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.btn-outline:hover {
  background: var(--color-accent-light);
  text-decoration: none;
}

/* ═══════════════════════════════════════════════════
   ROI CALCULATOR
   ═══════════════════════════════════════════════════ */
.calc-form {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 1.25rem 1.35rem;
}

.calc-form h2 {
  margin-top: 0;
}

.calc-fields {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.7rem 1rem;
  margin-bottom: 1rem;
}

@media (max-width: 500px) {
  .calc-fields {
    grid-template-columns: 1fr;
  }
}

.calc-field {
  display: flex;
  flex-direction: column;
}

.calc-field label {
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 0.2rem;
  color: var(--color-ink-muted);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.calc-field .field-hint {
  font-size: 0.72rem;
  color: var(--color-ink-faint);
  margin-bottom: 0.15rem;
}

.calc-field input,
.calc-field select {
  width: 100%;
  padding: 0.55rem 0.65rem;
  border: 1px solid var(--color-border);
  border-radius: 5px;
  font-size: 0.9rem;
  font-family: var(--font-sans);
  background: var(--color-surface);
  color: var(--color-ink);
  transition: border-color 0.15s;
}

.calc-field input:focus,
.calc-field select:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 2px var(--color-accent-light);
}

.calc-btn {
  display: inline-block;
  padding: 0.6rem 2rem;
  background: var(--color-accent);
  color: #fff;
  border: none;
  border-radius: 6px;
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s;
}

.calc-btn:hover {
  background: var(--color-accent-hover);
}

/* Results panel */
.calc-results {
  margin-top: 1.5rem;
  border-radius: 8px;
  background: #f8faf9;
  border: 1px solid var(--color-border-light);
  overflow: hidden;
}

.calc-results-header {
  background: #f0f4f3;
  padding: 0.75rem 1.25rem;
  border-bottom: 1px solid var(--color-border-light);
}

.calc-results-header h3 {
  margin: 0;
  font-size: 0.95rem;
  color: var(--color-ink);
}

.calc-results-body {
  padding: 1rem 1.25rem;
}

.calc-result-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.45rem 0;
  font-size: 0.87rem;
  border-bottom: 1px solid #edece8;
}

.calc-result-row:last-child {
  border-bottom: none;
}

.calc-result-row .label {
  color: var(--color-ink-subtle);
}

.calc-result-row .value {
  font-weight: 600;
  color: var(--color-ink);
  font-variant-numeric: tabular-nums;
}

.calc-result-divider {
  border-top: 2px solid var(--color-border);
  margin-top: 0.3rem;
  padding-top: 0.6rem;
}

.calc-result-highlight {
  padding: 0.45rem 0;
  font-size: 0.87rem;
}

.calc-result-highlight .value {
  font-size: 1.05rem;
  font-weight: 700;
}

/* Risk pill */
.result-risk {
  display: inline-block;
  font-size: 0.92rem;
  font-weight: 700;
  padding: 0.3em 0.8em;
  border-radius: 5px;
}

.risk-insufficient {
  background: var(--color-border-light);
  color: var(--color-ink-subtle);
}

.risk-avoid {
  background: var(--color-danger-bg);
  color: var(--color-danger-text);
  border: 1px solid var(--color-danger-border);
}

.risk-cautious {
  background: #fff7ed;
  color: #9a3412;
  border: 1px solid #fed7aa;
}

.risk-low {
  background: var(--color-success-bg);
  color: var(--color-success-text);
  border: 1px solid var(--color-success-border);
}

.calc-notes {
  margin-top: 0.9rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--color-border-light);
  font-size: 0.82rem;
  color: var(--color-ink-subtle);
  line-height: 1.5;
}

/* ═══════════════════════════════════════════════════
   FOOTER
   ═══════════════════════════════════════════════════ */
.site-footer {
  margin-top: 3.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
  font-size: 0.8rem;
  color: var(--color-ink-subtle);
  line-height: 1.55;
}

.site-footer p {
  margin-bottom: 0.35rem;
  color: var(--color-ink-subtle);
}

.site-footer strong {
  color: var(--color-ink-muted);
}

/* ═══════════════════════════════════════════════════
   PLACEHOLDER / COMING SOON
   ═══════════════════════════════════════════════════ */
.placeholder-note {
  font-size: 0.85rem;
  color: var(--color-ink-faint);
  font-style: italic;
  margin-top: 1.5rem;
}

/* ═══════════════════════════════════════════════════
   CODEX DESIGN PASS — wider editorial/product layout
   References: AI resume optimizer + cover-letter workspace.
   Keeps the site sober, but gives the first viewport a real product signal.
   ═══════════════════════════════════════════════════ */
:root {
  --color-paper: #f5f2eb;
  --color-paper-deep: #ede7dc;
  --color-surface: #fffdfa;
  --color-surface-soft: #f9f6ef;
  --color-ink: #151821;
  --color-ink-muted: #46515c;
  --color-ink-subtle: #73716a;
  --color-ink-faint: #a19a8e;
  --color-accent: #0b7a75;
  --color-accent-hover: #095f5b;
  --color-accent-light: #d8f5ee;
  --color-secondary: #1d3557;
  --color-amber: #c56b2c;
  --shadow-soft: 0 18px 45px rgba(42, 35, 25, 0.08);
  --shadow-card: 0 10px 28px rgba(32, 45, 48, 0.07);
  --max-width: 1080px;
  --content-width: 760px;
  --font-display: Georgia, "Times New Roman", "Songti SC", serif;
}

html {
  background:
    linear-gradient(90deg, rgba(11, 122, 117, 0.07), transparent 26rem),
    linear-gradient(180deg, #eef8f5 0, var(--color-paper) 25rem);
}

body {
  max-width: none;
  padding: 0;
}

h1,
h2,
h3 {
  letter-spacing: 0;
}

table {
  display: block;
  max-width: 100%;
  overflow-x: auto;
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: 8px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  margin-bottom: 0;
  padding-bottom: 0;
  background: rgba(245, 242, 235, 0.86);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(221, 213, 200, 0.8);
}

.site-header-inner,
.site-main,
.site-footer {
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
}

.site-header-inner {
  padding: 0.95rem 1.5rem;
  align-items: center;
}

.site-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
}

.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 2rem;
  height: 2rem;
  border-radius: 8px;
  color: #fff;
  background: linear-gradient(135deg, var(--color-secondary), var(--color-accent));
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  box-shadow: 0 8px 22px rgba(11, 122, 117, 0.18);
}

.site-nav {
  gap: 0.35rem 0.45rem;
}

.site-nav a {
  padding: 0.32rem 0.62rem;
  border-radius: 999px;
}

.site-nav a:hover {
  background: rgba(255, 253, 250, 0.72);
}

.site-nav a.active {
  background: rgba(216, 245, 238, 0.85);
}

.site-main {
  padding: 2.2rem 1.5rem 0;
}

.site-main > h1,
.site-main > h2,
.site-main > h3,
.site-main > p,
.site-main > ul,
.site-main > ol,
.site-main > table,
.site-main > blockquote,
.site-main > pre,
.site-main > .article-meta,
.site-main > .disclaimer,
.site-main > .calc-form,
.site-main > .placeholder-note {
  max-width: var(--content-width);
}

.home-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.78fr);
  gap: 2.5rem;
  align-items: center;
  min-height: 520px;
  padding: 3.2rem 0 2.2rem;
}

.home-hero h1 {
  max-width: 720px;
  font-family: var(--font-display);
  font-size: 4.25rem;
  font-weight: 760;
  line-height: 0.98;
  margin-bottom: 1.25rem;
}

.eyebrow {
  display: inline-flex;
  width: fit-content;
  align-items: center;
  border: 1px solid rgba(11, 122, 117, 0.22);
  background: rgba(216, 245, 238, 0.55);
  color: var(--color-accent-hover);
  border-radius: 999px;
  padding: 0.28rem 0.7rem;
  font-size: 0.72rem;
  line-height: 1;
  font-weight: 800;
  letter-spacing: 0.08em;
  margin-bottom: 1rem;
  text-transform: uppercase;
}

.home-hero .tagline {
  max-width: 650px;
  font-size: 1.15rem;
  line-height: 1.7;
  margin-bottom: 1.35rem;
}

.hero-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  color: var(--color-ink-subtle);
  font-size: 0.86rem;
}

.hero-metrics span {
  display: inline-flex;
  align-items: baseline;
  gap: 0.25rem;
  border: 1px solid var(--color-border-light);
  border-radius: 999px;
  background: rgba(255, 253, 250, 0.74);
  padding: 0.35rem 0.7rem;
}

.hero-metrics strong {
  color: var(--color-secondary);
  font-size: 1.08rem;
}

.hero-panel {
  position: relative;
  padding: 1.45rem;
  border: 1px solid rgba(11, 122, 117, 0.16);
  border-radius: 8px;
  background: rgba(255, 253, 250, 0.9);
  box-shadow: var(--shadow-soft);
}

.hero-panel::before {
  content: "";
  position: absolute;
  inset: 0.7rem -0.7rem -0.7rem 0.7rem;
  z-index: -1;
  border-radius: 8px;
  border: 1px solid rgba(29, 53, 87, 0.08);
  background: rgba(216, 245, 238, 0.35);
}

.panel-topline {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--color-ink-subtle);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.panel-topline strong {
  color: var(--color-secondary);
  font-size: 1.35rem;
  letter-spacing: 0;
}

.hero-panel h2 {
  margin: 0 0 0.45rem;
  font-family: var(--font-display);
  font-size: 1.65rem;
}

.signal-list {
  display: grid;
  gap: 0.65rem;
  margin: 1.15rem 0;
}

.signal-list div {
  position: relative;
  padding: 0.8rem 0.85rem 0.78rem 2.1rem;
  border: 1px solid var(--color-border-light);
  border-radius: 8px;
  background: var(--color-surface-soft);
}

.signal-list strong,
.signal-list small {
  display: block;
}

.signal-list strong {
  color: var(--color-ink);
  font-size: 0.92rem;
}

.signal-list small {
  color: var(--color-ink-subtle);
  font-size: 0.78rem;
  line-height: 1.45;
  margin-top: 0.12rem;
}

.signal-dot {
  position: absolute;
  top: 1rem;
  left: 0.85rem;
  width: 0.58rem;
  height: 0.58rem;
  border-radius: 999px;
}

.signal-dot.warn { background: #f59e0b; }
.signal-dot.danger { background: #ef4444; }
.signal-dot.ok { background: var(--color-accent); }

.panel-link {
  font-weight: 700;
}

.home-trust-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.8rem;
  margin-bottom: 1.3rem;
}

.home-trust-strip div {
  border: 1px solid var(--color-border-light);
  border-radius: 8px;
  background: rgba(255, 253, 250, 0.74);
  padding: 0.9rem 1rem;
}

.home-trust-strip strong,
.home-trust-strip span {
  display: block;
}

.home-trust-strip strong {
  color: var(--color-ink);
  font-size: 0.92rem;
}

.home-trust-strip span {
  color: var(--color-ink-subtle);
  font-size: 0.8rem;
  margin-top: 0.12rem;
}

.feature-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.9rem;
}

.feature-card {
  min-height: 100%;
}

.card,
.cat-card,
.calc-form,
.tool-summary {
  border-radius: 8px;
  background: var(--color-surface);
}

.card:hover,
.cat-card:hover {
  box-shadow: var(--shadow-card);
}

.card-kicker {
  color: var(--color-ink-faint);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  margin-bottom: 0.55rem;
}

.score-chip {
  display: inline-block;
  margin-left: 0.4rem;
  color: var(--color-ink-subtle);
  font-size: 0.8rem;
}

.btn {
  border-radius: 999px;
}

.card-alert {
  border-left: 4px solid var(--color-amber);
}

.tool-hero {
  max-width: var(--content-width);
  display: grid;
  grid-template-columns: minmax(0, 1fr) 220px;
  gap: 1rem;
  align-items: end;
  margin-bottom: 1rem;
}

.tool-hero h1 {
  font-family: var(--font-display);
  font-size: 2.65rem;
  line-height: 1.05;
}

.tool-summary {
  border: 1px solid var(--color-border-light);
  padding: 1rem;
  box-shadow: var(--shadow-card);
}

.tool-summary span,
.tool-summary small {
  display: block;
  color: var(--color-ink-subtle);
  font-size: 0.78rem;
}

.tool-summary strong {
  display: block;
  margin: 0.2rem 0;
  color: var(--color-secondary);
  font-size: 1.35rem;
}

.calc-form {
  box-shadow: var(--shadow-card);
}

.calc-btn {
  border-radius: 999px;
}

.calc-results {
  background: #f7fbfa;
}

.calc-results-header {
  background: #eaf6f3;
}

.calc-result-highlight .value {
  font-size: 1.15rem;
}

.site-footer {
  margin-top: 3.5rem;
  padding: 1.5rem 1.5rem 0;
}

.site-footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
}

@media (max-width: 860px) {
  .home-hero,
  .tool-hero,
  .feature-grid {
    grid-template-columns: 1fr;
  }

  .home-hero {
    min-height: 0;
    gap: 1.5rem;
    padding: 2rem 0 1.4rem;
  }

  .home-hero h1 {
    font-size: 3rem;
  }

  .home-trust-strip {
    grid-template-columns: 1fr;
  }

  .tool-summary {
    max-width: 360px;
  }
}

@media (max-width: 560px) {
  html {
    font-size: 16px;
  }

  .site-header-inner {
    padding: 0.8rem 1rem;
    align-items: flex-start;
  }

  .site-main {
    padding: 1.2rem 1rem 0;
  }

  .site-nav {
    max-width: 100%;
    overflow-x: auto;
    flex-wrap: nowrap;
    padding-bottom: 0.15rem;
  }

  .home-hero h1 {
    font-size: 2.35rem;
  }

  .tool-hero h1 {
    font-size: 2rem;
  }

  .hero-panel,
  .calc-form,
  .card,
  .cat-card {
    padding: 1rem;
  }

  .site-footer-inner {
    display: block;
  }

  .score-chip {
    display: block;
    margin-left: 0;
    margin-top: 0.35rem;
  }
}