@import url("https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@400;500;700;800&family=Noto+Serif+SC:wght@600;700;900&display=swap");

:root {
  --bg: #f4efe7;
  --bg-soft: #efe6d8;
  --surface: rgba(255, 251, 245, 0.88);
  --surface-strong: #fffaf2;
  --surface-ink: #162235;
  --line: rgba(22, 34, 53, 0.12);
  --line-strong: rgba(22, 34, 53, 0.24);
  --text: #172233;
  --text-soft: #566274;
  --text-faint: #788397;
  --primary: #1d5fd1;
  --primary-deep: #12449c;
  --accent: #c85a19;
  --accent-soft: #f3cf9b;
  --success: #167562;
  --shadow: 0 24px 80px rgba(17, 28, 43, 0.12);
  --radius-xl: 32px;
  --radius-lg: 24px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --max-width: 1180px;
  --header-height: 78px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(29, 95, 209, 0.18), transparent 32%),
    radial-gradient(circle at 92% 12%, rgba(200, 90, 25, 0.16), transparent 24%),
    linear-gradient(180deg, #f6f0e8 0%, #f4efe7 45%, #ede3d4 100%);
  line-height: 1.7;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.18) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.18) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(circle at center, black 35%, transparent 95%);
  pointer-events: none;
  opacity: 0.28;
  z-index: -1;
}

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

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

button,
a,
summary {
  -webkit-tap-highlight-color: transparent;
}

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

.skip-link {
  position: absolute;
  left: 16px;
  top: -48px;
  background: var(--surface-ink);
  color: #fff;
  padding: 12px 16px;
  border-radius: 999px;
  z-index: 999;
}

.skip-link:focus {
  top: 16px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  backdrop-filter: blur(18px);
  background: rgba(244, 239, 231, 0.82);
  border-bottom: 1px solid rgba(22, 34, 53, 0.08);
}

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

.header-inner {
  min-height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

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

.brand-mark {
  width: 46px;
  height: 46px;
  flex: 0 0 auto;
  display: inline-grid;
  place-items: center;
  border-radius: 16px;
  color: #fff;
  font-weight: 800;
  background:
    radial-gradient(circle at 30% 25%, rgba(255, 255, 255, 0.35), transparent 32%),
    linear-gradient(135deg, var(--primary) 0%, var(--primary-deep) 64%, #0f223d 100%);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.35), 0 14px 28px rgba(18, 68, 156, 0.28);
}

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

.brand-title {
  display: block;
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.brand-subtitle {
  display: block;
  font-size: 0.83rem;
  color: var(--text-soft);
}

.nav-toggle {
  display: none;
  width: 48px;
  height: 48px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.48);
  cursor: pointer;
}

.nav-toggle svg {
  width: 22px;
  height: 22px;
}

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

.site-nav a {
  padding: 10px 14px;
  border-radius: 999px;
  color: var(--text-soft);
  font-size: 0.96rem;
  transition: color 180ms ease, background-color 180ms ease, transform 180ms ease;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--text);
  background: rgba(22, 34, 53, 0.06);
}

.header-cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.button,
.button-secondary,
.button-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 48px;
  padding: 0 20px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 700;
  font-size: 0.96rem;
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease, background-color 180ms ease, color 180ms ease;
  cursor: pointer;
}

.button:hover,
.button-secondary:hover,
.button-link:hover {
  transform: translateY(-1px);
}

.button {
  color: #fff;
  background: linear-gradient(135deg, var(--accent) 0%, #de7a27 100%);
  box-shadow: 0 18px 30px rgba(200, 90, 25, 0.24);
}

.button-secondary {
  color: var(--text);
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.58);
}

.button-link {
  padding-left: 0;
  padding-right: 0;
  min-height: auto;
  color: var(--primary-deep);
  font-weight: 700;
}

.button-link::after {
  content: "→";
  font-size: 1rem;
}

.section {
  padding: 56px 0;
  scroll-margin-top: calc(var(--header-height) + 18px);
}

.section.hero {
  padding-top: 42px;
}

.hero-grid,
.split-grid,
.download-grid,
.authority-grid {
  display: grid;
  gap: 32px;
}

.hero-grid {
  grid-template-columns: minmax(0, 1.2fr) minmax(340px, 0.95fr);
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
  padding: 9px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.54);
  border: 1px solid rgba(22, 34, 53, 0.08);
  font-size: 0.88rem;
  color: var(--text-soft);
}

.eyebrow strong {
  color: var(--accent);
}

.display {
  margin: 0;
  font-family: "Noto Serif SC", "Songti SC", serif;
  font-size: clamp(2.7rem, 8vw, 5.4rem);
  line-height: 1.02;
  letter-spacing: -0.04em;
  max-width: 10ch;
}

.display .accent {
  color: var(--primary-deep);
}

.lead {
  max-width: 60ch;
  margin: 22px 0 0;
  font-size: 1.08rem;
  color: var(--text-soft);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.meta-row,
.tag-list,
.source-list,
.platform-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.meta-row {
  margin-top: 28px;
}

.meta-pill,
.tag,
.source-chip,
.platform-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid rgba(22, 34, 53, 0.08);
  font-size: 0.9rem;
}

.hero-note,
.section-note,
.small-note {
  font-size: 0.92rem;
  color: var(--text-faint);
}

.hero-note {
  margin-top: 18px;
}

.panel,
.card,
.plan-card,
.review-card,
.faq-card,
.client-card,
.source-card,
.comparison-card {
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.hero-panel,
.image-panel {
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.hero-panel {
  position: relative;
  padding: 18px;
  background:
    linear-gradient(160deg, rgba(18, 68, 156, 0.1), transparent 40%),
    linear-gradient(0deg, rgba(255, 255, 255, 0.72), rgba(255, 255, 255, 0.72));
}

.hero-panel img,
.image-panel img {
  width: 100%;
  height: auto;
  border-radius: 24px;
}

.floating-note {
  position: absolute;
  right: 26px;
  bottom: 24px;
  max-width: 240px;
  padding: 16px 18px;
  border-radius: 22px;
  background: rgba(15, 34, 61, 0.88);
  color: #f5f7fb;
  box-shadow: 0 24px 60px rgba(15, 34, 61, 0.28);
}

.floating-note strong {
  display: block;
  font-size: 1.1rem;
  font-weight: 800;
}

.floating-note span {
  display: block;
  margin-top: 6px;
  font-size: 0.9rem;
  color: rgba(245, 247, 251, 0.82);
}

.stats-grid,
.feature-grid,
.plan-grid,
.review-grid,
.client-grid,
.source-grid,
.faq-grid {
  display: grid;
  gap: 20px;
}

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

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

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

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

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

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

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

.stat-card,
.card,
.plan-card,
.review-card,
.client-card,
.source-card,
.comparison-card {
  padding: 24px;
  border-radius: var(--radius-lg);
}

.stat-card {
  background: rgba(255, 251, 245, 0.7);
  border: 1px solid var(--line);
}

.stat-label {
  display: block;
  font-size: 0.86rem;
  color: var(--text-faint);
}

.stat-value {
  display: block;
  margin-top: 12px;
  font-size: clamp(1.7rem, 3vw, 2.6rem);
  line-height: 1;
  font-weight: 800;
}

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 26px;
}

.kicker {
  display: block;
  margin-bottom: 10px;
  color: var(--accent);
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.8rem;
}

.section-title {
  margin: 0;
  font-family: "Noto Serif SC", "Songti SC", serif;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.1;
  letter-spacing: -0.03em;
}

.section-copy {
  max-width: 60ch;
  margin: 14px 0 0;
  color: var(--text-soft);
}

.card h3,
.plan-card h3,
.review-card h3,
.client-card h3,
.source-card h3,
.comparison-card h3 {
  margin: 0 0 12px;
  font-size: 1.18rem;
  line-height: 1.35;
}

.card p,
.review-card p,
.plan-card p,
.client-card p,
.source-card p,
.comparison-card p {
  margin: 0;
  color: var(--text-soft);
}

.card-list,
.check-list,
.table-list,
.footer-links {
  list-style: none;
  padding: 0;
  margin: 18px 0 0;
}

.card-list li,
.check-list li,
.table-list li,
.footer-links li {
  position: relative;
  padding-left: 18px;
  color: var(--text-soft);
}

.card-list li + li,
.check-list li + li,
.table-list li + li,
.footer-links li + li {
  margin-top: 10px;
}

.card-list li::before,
.check-list li::before,
.table-list li::before,
.footer-links li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.78em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  transform: translateY(-50%);
}

.plan-card {
  position: relative;
  overflow: hidden;
}

.plan-card.featured {
  border-color: rgba(200, 90, 25, 0.34);
  transform: translateY(-8px);
}

.plan-card.featured::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(140deg, rgba(200, 90, 25, 0.12), transparent 46%);
  pointer-events: none;
}

.plan-tag,
.review-role,
.client-type,
.source-type,
.table-label,
.warning-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
  padding: 7px 12px;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 700;
  background: rgba(22, 34, 53, 0.06);
  color: var(--text-soft);
}

.warning-pill {
  color: var(--accent);
  background: rgba(200, 90, 25, 0.1);
}

.price-row {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin: 4px 0 18px;
}

.price-row strong {
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1;
  font-weight: 800;
}

.price-row span {
  color: var(--text-faint);
}

.split-grid,
.download-grid,
.authority-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: center;
}

.timeline {
  display: grid;
  gap: 16px;
}

.timeline-item {
  display: grid;
  grid-template-columns: 58px 1fr;
  gap: 18px;
  align-items: start;
  padding: 20px;
  border-radius: var(--radius-lg);
  background: rgba(255, 251, 245, 0.72);
  border: 1px solid var(--line);
}

.timeline-item strong {
  width: 58px;
  height: 58px;
  display: inline-grid;
  place-items: center;
  border-radius: 18px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-deep) 100%);
  color: #fff;
  font-size: 1.3rem;
}

.timeline-item h3 {
  margin: 0 0 8px;
  font-size: 1.12rem;
}

.review-card {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.review-card strong {
  font-size: 1rem;
}

.review-card p {
  flex: 1;
}

.review-score {
  font-weight: 800;
  color: var(--primary-deep);
}

.faq-card {
  padding: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.faq-card details {
  border: 1px solid var(--line);
  background: var(--surface);
}

.faq-card summary {
  list-style: none;
  cursor: pointer;
  padding: 22px 24px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

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

.faq-card summary::after {
  content: "+";
  flex: 0 0 auto;
  font-size: 1.4rem;
  color: var(--primary-deep);
}

.faq-card details[open] summary::after {
  content: "−";
}

.faq-card .faq-body {
  padding: 0 24px 24px;
  color: var(--text-soft);
}

.faq-card .faq-body p {
  margin: 0;
}

.callout {
  padding: 24px;
  border-radius: var(--radius-lg);
  background: linear-gradient(140deg, rgba(18, 68, 156, 0.95), rgba(16, 34, 61, 0.92));
  color: rgba(245, 247, 251, 0.92);
  box-shadow: 0 24px 80px rgba(14, 34, 60, 0.22);
}

.callout h3 {
  margin: 0 0 12px;
  color: #fff;
  font-size: 1.3rem;
}

.callout p {
  margin: 0;
}

.callout .check-list li,
.callout .check-list li::before {
  color: inherit;
}

.callout .check-list li::before {
  background: var(--accent-soft);
}

.client-card {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.client-card .button-secondary,
.client-card .button-link {
  width: fit-content;
}

.comparison-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

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

.comparison-card .table-list {
  margin-top: 16px;
}

.source-card {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.source-card a {
  color: var(--primary-deep);
  font-weight: 700;
}

.cta-band {
  padding: 28px;
  border-radius: var(--radius-xl);
  background:
    radial-gradient(circle at right top, rgba(200, 90, 25, 0.16), transparent 28%),
    linear-gradient(135deg, rgba(255, 255, 255, 0.82), rgba(255, 251, 245, 0.72));
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.cta-band .hero-actions {
  margin-top: 20px;
}

.breadcrumb {
  margin-top: 16px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  color: var(--text-faint);
  font-size: 0.92rem;
}

.breadcrumb span {
  color: var(--text-soft);
}

.site-footer {
  padding: 32px 0 48px;
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) repeat(2, minmax(0, 0.8fr));
  gap: 24px;
  padding: 28px;
  border-radius: var(--radius-xl);
  background: rgba(22, 34, 53, 0.96);
  color: rgba(245, 247, 251, 0.86);
}

.footer-grid h3 {
  margin: 0 0 12px;
  color: #fff;
  font-size: 1rem;
}

.footer-grid p,
.footer-grid li {
  color: rgba(245, 247, 251, 0.72);
}

.footer-grid .brand-subtitle {
  color: rgba(245, 247, 251, 0.6);
}

.footer-grid .brand-mark {
  box-shadow: none;
}

.footer-grid .footer-links li::before {
  background: var(--accent-soft);
}

.legal-note {
  margin-top: 18px;
  font-size: 0.88rem;
  color: rgba(245, 247, 251, 0.52);
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 420ms ease, transform 420ms ease;
}

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

@media (max-width: 1080px) {
  .hero-grid,
  .feature-grid,
  .plan-grid,
  .review-grid,
  .client-grid,
  .source-grid,
  .faq-grid,
  .split-grid,
  .download-grid,
  .authority-grid,
  .comparison-grid,
  .stats-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hero-grid {
    align-items: start;
  }
}

@media (max-width: 860px) {
  :root {
    --header-height: 74px;
  }

  .nav-toggle {
    display: inline-grid;
    place-items: center;
  }

  .site-nav {
    position: absolute;
    inset: calc(var(--header-height) + 8px) 16px auto 16px;
    padding: 14px;
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    background: rgba(255, 251, 245, 0.98);
    border: 1px solid var(--line);
    border-radius: 24px;
    box-shadow: var(--shadow);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-8px);
    transition: opacity 180ms ease, transform 180ms ease;
  }

  body.menu-open .site-nav {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .site-nav a {
    padding: 13px 14px;
    border-radius: 16px;
  }

  .header-cta {
    display: none;
  }

  .hero-grid,
  .stats-grid,
  .feature-grid,
  .plan-grid,
  .review-grid,
  .client-grid,
  .source-grid,
  .faq-grid,
  .split-grid,
  .download-grid,
  .authority-grid,
  .comparison-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .floating-note {
    position: static;
    max-width: none;
    margin-top: 16px;
  }

  .plan-card.featured {
    transform: none;
  }
}

@media (max-width: 640px) {
  body::before {
    background-size: 32px 32px;
  }

  .header-inner,
  .section-inner,
  .footer-inner {
    width: min(calc(100% - 24px), var(--max-width));
  }

  .section {
    padding: 46px 0;
  }

  .hero-actions,
  .meta-row {
    gap: 12px;
  }

  .button,
  .button-secondary {
    width: 100%;
  }

  .hero-actions .button-link {
    width: fit-content;
  }

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

  .timeline-item strong {
    width: 52px;
    height: 52px;
  }

  .footer-grid {
    padding: 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}

:focus-visible {
  outline: 3px solid rgba(29, 95, 209, 0.35);
  outline-offset: 3px;
}