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

:root {
  --bg: #f7f1e6;
  --bg-deep: #efe3d0;
  --surface: #fffdf7;
  --surface-soft: #fff7eb;
  --ink: #10243d;
  --ink-soft: #4d6178;
  --line: #10243d;
  --line-soft: rgba(16, 36, 61, 0.16);
  --orange: #f06a23;
  --teal: #0f9a88;
  --gold: #f3c34f;
  --white: #ffffff;
  --shadow-hard: 8px 8px 0 var(--line);
  --radius-xl: 28px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --max-width: 1180px;
  --header-height: 86px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background:
    linear-gradient(90deg, rgba(240, 106, 35, 0.08) 0, rgba(240, 106, 35, 0.08) 1px, transparent 1px, transparent 56px),
    linear-gradient(rgba(15, 154, 136, 0.08) 0, rgba(15, 154, 136, 0.08) 1px, transparent 1px, transparent 56px),
    linear-gradient(180deg, #f9f4ea 0%, #f5eedf 100%);
  line-height: 1.7;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background:
    radial-gradient(circle at 8% 10%, rgba(240, 106, 35, 0.14), transparent 24%),
    radial-gradient(circle at 92% 10%, rgba(15, 154, 136, 0.14), transparent 18%),
    radial-gradient(circle at 92% 92%, rgba(243, 195, 79, 0.14), transparent 22%);
  pointer-events: none;
  z-index: -1;
}

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

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

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

.skip-link {
  position: absolute;
  left: 18px;
  top: -48px;
  background: var(--ink);
  color: var(--white);
  padding: 12px 16px;
  border-radius: 999px;
  z-index: 100;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(255, 252, 245, 0.94);
  backdrop-filter: blur(18px);
  border-bottom: 3px solid var(--line);
}

.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: 20px;
}

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

.brand-mark {
  width: 54px;
  height: 54px;
  flex: 0 0 auto;
  border-radius: 18px;
  display: inline-grid;
  place-items: center;
  font-family: "IBM Plex Sans Condensed", sans-serif;
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--white);
  background:
    linear-gradient(135deg, var(--ink) 0 58%, var(--orange) 58% 100%);
  border: 3px solid var(--line);
  box-shadow: var(--shadow-hard);
}

.brand-title {
  display: block;
  font-family: "IBM Plex Sans Condensed", sans-serif;
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.brand-subtitle {
  display: block;
  margin-top: 2px;
  font-size: 0.88rem;
  color: var(--ink-soft);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 10px;
}

.site-nav a {
  min-height: 46px;
  padding: 10px 14px;
  display: inline-flex;
  align-items: center;
  border: 2px solid transparent;
  border-radius: 16px;
  color: var(--ink-soft);
  transition: transform 180ms ease, background-color 180ms ease, border-color 180ms ease;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  transform: translateY(-1px);
  background: var(--white);
  border-color: var(--line);
  color: var(--ink);
}

.nav-toggle {
  display: none;
  width: 50px;
  height: 50px;
  border: 2px solid var(--line);
  border-radius: 16px;
  background: var(--white);
  box-shadow: 4px 4px 0 var(--line);
  cursor: pointer;
}

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

.header-cta {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.button,
.button-secondary,
.button-link {
  min-height: 52px;
  padding: 0 20px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border-radius: 16px;
  border: 3px solid var(--line);
  font-weight: 800;
  letter-spacing: 0.02em;
  transition: transform 180ms ease, box-shadow 180ms ease, background-color 180ms ease;
  cursor: pointer;
}

.button:hover,
.button-secondary:hover,
.button-link:hover {
  transform: translate(-2px, -2px);
  box-shadow: 10px 10px 0 var(--line);
}

.button {
  color: var(--white);
  background: var(--orange);
  box-shadow: 7px 7px 0 var(--line);
}

.button-secondary {
  color: var(--ink);
  background: var(--gold);
  box-shadow: 7px 7px 0 var(--line);
}

.button-link {
  min-height: auto;
  padding: 0;
  border: 0;
  background: transparent;
  box-shadow: none;
  color: var(--teal);
}

.button-link::after {
  content: "鈫?";
}

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

.hero {
  padding-top: 36px;
}

.hero-grid,
.split-grid,
.download-grid,
.authority-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px;
  align-items: center;
}

.eyebrow,
.signal-tag,
.meta-pill,
.panel-label,
.warning-pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 14px;
  border-radius: 999px;
  border: 2px solid var(--line);
  background: var(--white);
  font-size: 0.88rem;
  font-weight: 700;
  box-shadow: 4px 4px 0 var(--line);
}

.eyebrow strong,
.warning-pill {
  color: var(--orange);
}

.display,
.section-title {
  margin: 0;
  font-family: "IBM Plex Sans Condensed", "Noto Sans SC", sans-serif;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 0.96;
}

.display {
  font-size: clamp(3.2rem, 8vw, 6.4rem);
  max-width: 8ch;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3.6rem);
}

.lead,
.section-copy {
  margin: 18px 0 0;
  max-width: 58ch;
  color: var(--ink-soft);
  font-size: 1.04rem;
}

.hero-actions,
.meta-row,
.platform-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.hero-actions {
  margin-top: 24px;
}

.meta-row {
  margin-top: 22px;
}

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

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

.hero-panel,
.image-panel,
.card,
.stat-card,
.plan-card,
.client-card,
.review-card,
.timeline-item,
.faq-card details,
.source-card,
.friend-card,
.cta-band,
.callout,
.comparison-card {
  background: var(--surface);
  border: 3px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-hard);
}

.hero-panel,
.image-panel {
  padding: 18px;
}

.hero-panel img,
.image-panel img {
  width: 100%;
  height: auto;
  border-radius: 18px;
  border: 2px solid var(--line);
  background: var(--surface-soft);
}

.floating-note {
  margin-top: 18px;
  padding: 16px 18px;
  border: 3px dashed var(--line);
  border-radius: 18px;
  background: linear-gradient(135deg, rgba(243, 195, 79, 0.22), rgba(15, 154, 136, 0.12));
}

.floating-note strong {
  display: block;
  font-family: "IBM Plex Sans Condensed", sans-serif;
  font-size: 1.12rem;
}

.floating-note span {
  display: block;
  margin-top: 6px;
  color: var(--ink-soft);
}

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 28px;
}

.kicker {
  display: inline-block;
  margin-bottom: 10px;
  font-family: "IBM Plex Sans Condensed", sans-serif;
  font-size: 0.9rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--orange);
}

.stats-grid,
.feature-grid,
.plan-grid,
.review-grid,
.source-grid,
.faq-grid,
.friend-grid,
.client-grid,
.comparison-grid {
  display: grid;
  gap: 18px;
}

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

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

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

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

.stat-card,
.card,
.plan-card,
.client-card,
.review-card,
.source-card,
.friend-card,
.comparison-card,
.cta-band {
  padding: 22px;
}

.stat-label,
.plan-tag,
.review-role,
.source-type,
.client-type,
.table-label {
  display: inline-flex;
  align-items: center;
  margin-bottom: 14px;
  padding: 7px 12px;
  border: 2px solid var(--line);
  border-radius: 999px;
  background: var(--surface-soft);
  font-size: 0.82rem;
  font-weight: 700;
}

.stat-value {
  display: block;
  font-family: "IBM Plex Sans Condensed", sans-serif;
  font-size: clamp(2rem, 4vw, 2.9rem);
  line-height: 1;
}

.card h3,
.plan-card h3,
.review-card h3,
.source-card h3,
.friend-card h3,
.client-card h3,
.comparison-card h3,
.timeline-item h3,
.callout h3 {
  margin: 0 0 12px;
  font-size: 1.18rem;
}

.card p,
.plan-card p,
.review-card p,
.source-card p,
.friend-card p,
.client-card p,
.comparison-card p,
.timeline-item p,
.callout p {
  margin: 0;
  color: var(--ink-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;
}

.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: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--orange);
  transform: translateY(-50%);
}

.plan-card.featured {
  background:
    linear-gradient(135deg, rgba(243, 195, 79, 0.16), rgba(240, 106, 35, 0.09)),
    var(--surface);
}

.price-row {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin: 4px 0 16px;
}

.price-row strong {
  font-family: "IBM Plex Sans Condensed", sans-serif;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1;
}

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

.timeline-item {
  padding: 20px;
  display: grid;
  grid-template-columns: 60px 1fr;
  gap: 18px;
  align-items: start;
}

.timeline-item strong {
  width: 60px;
  height: 60px;
  display: inline-grid;
  place-items: center;
  border-radius: 18px;
  border: 3px solid var(--line);
  background: var(--gold);
  box-shadow: 5px 5px 0 var(--line);
  font-family: "IBM Plex Sans Condensed", sans-serif;
  font-size: 1.3rem;
}

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

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

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

.faq-card summary {
  cursor: pointer;
  list-style: none;
  padding: 20px 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  font-weight: 800;
}

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

.faq-card summary::after {
  content: "+";
  font-size: 1.4rem;
  color: var(--orange);
}

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

.faq-body {
  padding: 0 22px 22px;
}

.faq-body p {
  margin: 0;
  color: var(--ink-soft);
}

.source-card a,
.friend-card a {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: 14px;
  font-weight: 800;
  color: var(--teal);
}

.source-card a::after,
.friend-card a::after {
  content: "鈫?";
}

.callout,
.cta-band {
  padding: 26px;
}

.callout {
  background: linear-gradient(135deg, rgba(243, 195, 79, 0.22), rgba(15, 154, 136, 0.12));
}

.friend-card {
  background:
    linear-gradient(135deg, rgba(240, 106, 35, 0.08), rgba(16, 36, 61, 0.04)),
    var(--surface);
}

.friend-card p {
  min-height: 3.2em;
}

.site-footer {
  padding: 36px 0 52px;
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) repeat(2, minmax(0, 0.9fr));
  gap: 24px;
  padding: 26px;
  border: 3px solid var(--line);
  border-radius: var(--radius-xl);
  background: var(--ink);
  color: rgba(255, 255, 255, 0.84);
  box-shadow: var(--shadow-hard);
}

.footer-grid h3 {
  margin: 0 0 12px;
  font-size: 1rem;
  color: var(--white);
}

.footer-grid p,
.footer-grid li {
  color: rgba(255, 255, 255, 0.72);
}

.footer-grid .brand-subtitle {
  color: rgba(255, 255, 255, 0.6);
}

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

.legal-note {
  margin-top: 18px;
  font-size: 0.88rem;
  color: rgba(255, 255, 255, 0.54);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 0.92rem;
  color: var(--ink-soft);
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 360ms ease, transform 360ms ease;
}

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

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

@media (max-width: 860px) {
  :root {
    --header-height: 78px;
  }

  .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: var(--white);
    border: 3px solid var(--line);
    border-radius: 22px;
    box-shadow: var(--shadow-hard);
    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);
  }

  .header-cta {
    display: none;
  }

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

@media (max-width: 640px) {
  .header-inner,
  .section-inner,
  .footer-inner {
    width: min(calc(100% - 24px), var(--max-width));
  }

  .section {
    padding: 46px 0;
  }

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

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

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

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

@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(15, 154, 136, 0.34);
  outline-offset: 3px;
}