:root {
  --paper: #f5eee1;
  --paper-strong: #fffaf2;
  --ink: #1d1710;
  --muted: #62584a;
  --line: #dccdbd;
  --accent: #bb4c26;
  --accent-soft: #fff0e7;
  --teal: #1f5d58;
  --teal-soft: #e6f3f1;
  --gold: #9f6f1a;
  --gold-soft: #fff5df;
  --card: rgba(255, 250, 242, 0.9);
  --shadow: 0 18px 45px rgba(55, 36, 18, 0.12);
  --max-width: 1180px;
  --radius-xl: 34px;
  --radius-lg: 24px;
  --radius-md: 18px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: "Trebuchet MS", "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.65;
  background:
    radial-gradient(circle at top left, rgba(187, 76, 38, 0.11), transparent 32%),
    radial-gradient(circle at 100% 20%, rgba(31, 93, 88, 0.14), transparent 26%),
    linear-gradient(180deg, #f8f2e8 0%, #f5eee1 48%, #fbf8f2 100%);
}

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

p,
ul,
ol {
  margin: 0 0 16px;
}

ul,
ol {
  padding-left: 20px;
}

h1,
h2,
h3,
h4 {
  margin: 0 0 14px;
  font-family: Georgia, "Times New Roman", "Songti SC", "STSong", serif;
  line-height: 1.08;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(42px, 6vw, 74px);
}

h2 {
  font-size: clamp(30px, 4vw, 48px);
}

h3 {
  font-size: clamp(22px, 3vw, 30px);
}

small,
.small {
  font-size: 14px;
  color: var(--muted);
}

img {
  display: block;
  max-width: 100%;
}

code {
  padding: 2px 6px;
  border-radius: 999px;
  background: rgba(29, 23, 16, 0.08);
  font-size: 0.92em;
}

.container {
  width: min(var(--max-width), calc(100% - 32px));
  margin: 0 auto;
}

.site-shell {
  min-height: 100vh;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: auto;
}

.skip-link:focus {
  left: 16px;
  top: 16px;
  z-index: 50;
  background: var(--ink);
  color: #fff;
  padding: 10px 14px;
  border-radius: 999px;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(98, 88, 74, 0.12);
  backdrop-filter: blur(14px);
  background: rgba(248, 242, 232, 0.84);
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 16px;
  background:
    linear-gradient(135deg, var(--accent) 0%, #d27625 55%, #f5cb77 100%);
  color: #fff8f0;
  font-weight: 800;
  letter-spacing: 0.08em;
  box-shadow: var(--shadow);
}

.brand-copy {
  min-width: 0;
}

.brand-copy strong {
  display: block;
  font-size: 18px;
}

.brand-copy span {
  display: block;
  color: var(--muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

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

.nav a {
  padding: 10px 14px;
  border-radius: 999px;
  color: var(--muted);
  font-size: 14px;
}

.nav a.current,
.nav a:hover,
.nav a:focus-visible {
  background: rgba(29, 23, 16, 0.08);
  color: var(--ink);
}

.nav .nav-buy {
  background: var(--ink);
  color: #fff;
}

.nav .nav-buy:hover,
.nav .nav-buy:focus-visible {
  background: var(--accent);
  color: #fff;
}

.mobile-toggle {
  display: none;
  padding: 10px 14px;
  border: 1px solid var(--line);
  background: #fff9f0;
  border-radius: 999px;
  color: var(--ink);
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 700;
  transition: transform 0.2s ease, background 0.2s ease, color 0.2s ease;
}

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

.button-primary {
  background: var(--accent);
  color: #fff7f0;
  box-shadow: 0 12px 28px rgba(187, 76, 38, 0.2);
}

.button-secondary {
  background: var(--teal);
  color: #f3fbf9;
}

.button-ghost {
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.55);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px;
  border-radius: 999px;
  border: 1px solid rgba(98, 88, 74, 0.18);
  background: rgba(255, 250, 242, 0.72);
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.eyebrow::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
}

.hero {
  position: relative;
  padding: 54px 0 38px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 28px;
  align-items: stretch;
}

.hero-copy,
.hero-panel {
  padding: 34px;
  border-radius: var(--radius-xl);
  border: 1px solid rgba(98, 88, 74, 0.12);
  background: var(--card);
  box-shadow: var(--shadow);
}

.hero-copy {
  background:
    linear-gradient(140deg, rgba(255, 255, 255, 0.42), rgba(255, 255, 255, 0.18)),
    linear-gradient(180deg, rgba(255, 240, 231, 0.95), rgba(255, 250, 242, 0.92));
}

.hero-copy p {
  max-width: 52ch;
  font-size: 18px;
  color: var(--muted);
}

.hero-title-note {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 18px;
  align-items: start;
  margin-bottom: 18px;
}

.hero-ribbon {
  padding: 14px 16px;
  border-radius: 20px;
  background: rgba(29, 23, 16, 0.88);
  color: #f8eee1;
  font-size: 14px;
  max-width: 220px;
}

.hero-kpis {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 24px;
}

.kpi {
  padding: 16px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(98, 88, 74, 0.14);
}

.kpi strong {
  display: block;
  margin-bottom: 6px;
  font-size: 28px;
  color: var(--accent);
}

.hero-panel {
  display: flex;
  flex-direction: column;
  gap: 18px;
  background:
    linear-gradient(180deg, rgba(230, 243, 241, 0.98), rgba(255, 250, 242, 0.94));
}

.panel-card {
  padding: 18px;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.76);
  border: 1px solid rgba(98, 88, 74, 0.12);
}

.panel-card h3 {
  margin-bottom: 10px;
  font-size: 24px;
}

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

.chip {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 12px;
  border-radius: 999px;
  background: var(--paper-strong);
  border: 1px solid rgba(98, 88, 74, 0.15);
  color: var(--muted);
  font-size: 14px;
}

.section {
  padding: 34px 0;
}

.section-header {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 18px;
  align-items: end;
  margin-bottom: 24px;
}

.section-header p {
  max-width: 60ch;
  color: var(--muted);
}

.card-grid {
  display: grid;
  gap: 18px;
}

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

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

.grid-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.card {
  padding: 22px;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(98, 88, 74, 0.12);
  background: rgba(255, 251, 246, 0.9);
  box-shadow: var(--shadow);
}

.card h3,
.card h4 {
  margin-bottom: 10px;
}

.card p,
.card li {
  color: var(--muted);
}

.card a.text-link,
.text-link {
  color: var(--accent);
  font-weight: 700;
}

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

.band-main,
.band-side {
  padding: 26px;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
}

.band-main {
  background: linear-gradient(135deg, rgba(187, 76, 38, 0.95), rgba(143, 45, 14, 0.96));
  color: #fff8f0;
}

.band-main p,
.band-main li {
  color: rgba(255, 248, 240, 0.86);
}

.band-side {
  background: linear-gradient(180deg, rgba(255, 245, 223, 0.98), rgba(255, 250, 242, 0.92));
  border: 1px solid rgba(159, 111, 26, 0.18);
}

.signal-list {
  display: grid;
  gap: 14px;
}

.signal-list li {
  list-style: none;
  padding: 0 0 14px;
  border-bottom: 1px dashed rgba(98, 88, 74, 0.2);
}

.signal-list li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.decision-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.decision-card {
  padding: 22px;
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid rgba(98, 88, 74, 0.12);
  box-shadow: var(--shadow);
}

.decision-card .badge {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 0 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

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

.badge-cool {
  background: var(--teal-soft);
  color: var(--teal);
}

.badge-gold {
  background: var(--gold-soft);
  color: var(--gold);
}

.timeline {
  display: grid;
  gap: 14px;
}

.timeline-step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  align-items: start;
  padding: 16px 0;
  border-bottom: 1px dashed rgba(98, 88, 74, 0.22);
}

.timeline-step:last-child {
  border-bottom: 0;
}

.timeline-index {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--ink);
  color: #fff;
  font-weight: 800;
}

.cta-strip {
  padding: 24px;
  border-radius: var(--radius-xl);
  background:
    linear-gradient(120deg, rgba(31, 93, 88, 0.94), rgba(18, 73, 69, 0.92));
  color: #f3fbf9;
  box-shadow: var(--shadow);
}

.cta-strip p,
.cta-strip li {
  color: rgba(243, 251, 249, 0.84);
}

.article-hero {
  padding: 42px 0 22px;
}

.article-hero-card {
  padding: 30px;
  border-radius: var(--radius-xl);
  background:
    linear-gradient(180deg, rgba(255, 250, 242, 0.96), rgba(255, 244, 235, 0.9));
  border: 1px solid rgba(98, 88, 74, 0.12);
  box-shadow: var(--shadow);
}

.article-hero-card p {
  max-width: 60ch;
  color: var(--muted);
  font-size: 18px;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 16px;
}

.article-layout {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: 22px;
  padding-bottom: 42px;
}

.article-side {
  position: sticky;
  top: 92px;
  align-self: start;
  padding: 22px;
  border-radius: var(--radius-lg);
  background: rgba(255, 251, 246, 0.9);
  border: 1px solid rgba(98, 88, 74, 0.12);
  box-shadow: var(--shadow);
}

.toc {
  display: grid;
  gap: 10px;
}

.toc a {
  color: var(--muted);
  font-size: 14px;
}

.toc a:hover,
.toc a:focus-visible {
  color: var(--accent);
}

.article-main {
  display: grid;
  gap: 18px;
}

.article-section {
  padding: 24px;
  border-radius: var(--radius-lg);
  background: rgba(255, 251, 246, 0.88);
  border: 1px solid rgba(98, 88, 74, 0.12);
  box-shadow: var(--shadow);
}

.article-section p,
.article-section li {
  color: var(--muted);
}

.note {
  padding: 16px 18px;
  border-left: 4px solid var(--accent);
  border-radius: 0 18px 18px 0;
  background: rgba(255, 240, 231, 0.78);
}

.matrix-table,
.compare-table {
  width: 100%;
  border-collapse: collapse;
  overflow: hidden;
  border-radius: 18px;
}

.matrix-table th,
.matrix-table td,
.compare-table th,
.compare-table td {
  padding: 14px 12px;
  border-bottom: 1px solid rgba(98, 88, 74, 0.14);
  text-align: left;
  vertical-align: top;
}

.matrix-table th,
.compare-table th {
  background: rgba(29, 23, 16, 0.92);
  color: #fff;
}

.matrix-table tr:nth-child(even) td,
.compare-table tr:nth-child(even) td {
  background: rgba(255, 255, 255, 0.5);
}

.resource-links,
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.resource-links a,
.footer-links a {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 0 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.74);
  border: 1px solid rgba(98, 88, 74, 0.12);
  color: var(--muted);
}

.faq-list {
  display: grid;
  gap: 14px;
}

.faq-item {
  border-radius: 20px;
  background: rgba(255, 251, 246, 0.86);
  border: 1px solid rgba(98, 88, 74, 0.12);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.faq-item summary {
  cursor: pointer;
  padding: 18px 22px;
  font-weight: 700;
  list-style: none;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item .faq-answer {
  padding: 0 22px 20px;
  color: var(--muted);
}

.site-footer {
  padding: 20px 0 40px;
}

.footer-card {
  padding: 28px;
  border-radius: var(--radius-xl);
  background: rgba(29, 23, 16, 0.94);
  color: #f5eee1;
  box-shadow: var(--shadow);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 22px;
}

.footer-card p,
.footer-card li,
.footer-card a {
  color: rgba(245, 238, 225, 0.78);
}

.footer-card a:hover,
.footer-card a:focus-visible {
  color: #fff;
}

.footer-note {
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid rgba(245, 238, 225, 0.16);
  font-size: 14px;
}

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

.three-column {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.pillars {
  display: grid;
  gap: 14px;
}

.pillar {
  padding: 16px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.56);
  border: 1px solid rgba(98, 88, 74, 0.12);
}

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

@media (max-width: 960px) {
  .hero-grid,
  .split-band,
  .article-layout,
  .footer-grid,
  .decision-grid,
  .three-column {
    grid-template-columns: 1fr;
  }

  .grid-4,
  .grid-3,
  .grid-2,
  .two-column {
    grid-template-columns: 1fr;
  }

  .hero-title-note,
  .section-header {
    grid-template-columns: 1fr;
  }

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

  .article-side {
    position: static;
  }
}

@media (max-width: 780px) {
  .mobile-toggle {
    display: inline-flex;
  }

  .nav {
    display: none;
    position: absolute;
    left: 16px;
    right: 16px;
    top: calc(100% + 10px);
    flex-direction: column;
    align-items: stretch;
    padding: 14px;
    border-radius: 24px;
    border: 1px solid var(--line);
    background: rgba(255, 250, 242, 0.96);
    box-shadow: var(--shadow);
  }

  .nav.is-open {
    display: flex;
  }

  .nav a {
    border-radius: 14px;
  }

  .hero-copy,
  .hero-panel,
  .band-main,
  .band-side,
  .article-hero-card,
  .article-section,
  .footer-card {
    padding: 22px;
  }
}