/* VoVoProxy marketing site — static, no build step, no external requests. */

:root {
  --brand-50: #eff6ff;
  --brand-100: #dbeafe;
  --brand-200: #bfdbfe;
  --brand-500: #3b82f6;
  --brand-600: #2563eb;
  --brand-700: #1d4ed8;
  --brand-900: #1e3a8a;
  --ink: #0b1220;
  --body: #334155;
  --muted: #64748b;
  --line: #e2e8f0;
  --line-soft: #eef2f7;
  --surface: #ffffff;
  --bg: #f7f9fc;
  --success: #059669;
  --radius-sm: 10px;
  --radius: 16px;
  --radius-lg: 24px;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
  --shadow: 0 12px 32px rgba(15, 23, 42, 0.08);
  --container: 1160px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--body);
  background: var(--surface);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a {
  color: var(--brand-700);
  text-decoration: none;
}

a:hover {
  color: var(--brand-900);
}

p {
  margin: 0 0 1em;
}

h1,
h2,
h3,
h4 {
  color: var(--ink);
  line-height: 1.2;
  margin: 0 0 0.5em;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2.15rem, 4.4vw, 3.45rem);
  font-weight: 700;
}

h2 {
  font-size: clamp(1.7rem, 2.8vw, 2.35rem);
  font-weight: 700;
}

h3 {
  font-size: 1.15rem;
  font-weight: 650;
}

ul,
ol {
  margin: 0 0 1em;
  padding-left: 1.25em;
}

li + li {
  margin-top: 0.35em;
}

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -60px;
  z-index: 100;
  background: var(--ink);
  color: #fff;
  padding: 10px 16px;
  border-radius: 8px;
  transition: top 0.15s ease;
}

.skip-link:focus {
  top: 12px;
  color: #fff;
}

:focus-visible {
  outline: 3px solid var(--brand-500);
  outline-offset: 3px;
}

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line-soft);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 32px;
  min-height: 70px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  color: var(--ink);
  font-size: 1.05rem;
  letter-spacing: -0.02em;
  flex-shrink: 0;
}

.brand:hover {
  color: var(--ink);
}

.brand-mark {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  background: var(--brand-600);
  display: grid;
  place-items: center;
  box-shadow: 0 6px 14px rgba(37, 99, 235, 0.28);
}

.brand-mark svg {
  width: 20px;
  height: 20px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 26px;
  margin-left: 8px;
}

.nav a {
  color: var(--body);
  font-size: 0.92rem;
  font-weight: 500;
  padding: 6px 0;
  border-bottom: 2px solid transparent;
}

.nav a:hover {
  color: var(--ink);
  border-bottom-color: var(--brand-200);
}

.header-actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.lang-switcher {
  position: relative;
  flex-shrink: 0;
}

.lang-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  padding: 0;
  border: none;
  background: transparent;
  border-radius: 10px;
  color: var(--body);
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

.lang-toggle:hover {
  background: #f1f5f9;
  color: var(--ink);
}

.lang-menu {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  min-width: 140px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 10px;
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.12);
  padding: 6px;
  display: none;
  z-index: 60;
}

.lang-menu.is-open {
  display: block;
}

.lang-menu a,
.lang-menu .lang-current {
  display: block;
  padding: 8px 12px;
  border-radius: 8px;
  color: var(--body);
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  white-space: nowrap;
}

.lang-menu a:hover {
  background: #f1f5f9;
  color: var(--ink);
}

.lang-menu .lang-current {
  color: var(--brand-600);
  font-weight: 600;
  cursor: default;
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 42px;
  padding: 0 18px;
  border-radius: 10px;
  border: 1px solid transparent;
  font-size: 0.92rem;
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
  transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease,
    transform 0.15s ease, box-shadow 0.15s ease;
}

.btn-primary {
  background: var(--brand-600);
  color: #fff;
  box-shadow: 0 8px 20px rgba(37, 99, 235, 0.22);
}

.btn-primary:hover {
  background: var(--brand-700);
  color: #fff;
  transform: translateY(-1px);
}

.btn-secondary {
  background: #fff;
  color: var(--ink);
  border-color: var(--line);
}

.btn-secondary:hover {
  color: var(--ink);
  border-color: #cbd5e1;
  background: #f8fafc;
}

.btn-light {
  background: #fff;
  color: var(--brand-700);
}

.btn-light:hover {
  color: var(--brand-900);
  background: var(--brand-50);
}

.btn-ghost-light {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.38);
}

.btn-ghost-light:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.16);
}

.btn-sm {
  min-height: 36px;
  padding: 0 14px;
  font-size: 0.85rem;
}

/* ---------- Hero ---------- */

.hero {
  position: relative;
  overflow: hidden;
  padding: 88px 0 80px;
  color: #eef4ff;
  background: radial-gradient(1200px 620px at 78% -10%, #3b82f6 0%, rgba(59, 130, 246, 0) 55%),
    linear-gradient(135deg, #152a63 0%, #1d4ed8 46%, #2563eb 100%);
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.55), transparent 78%);
  pointer-events: none;
}

.hero .container {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: 56px;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px 6px 8px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  color: #dbeafe;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 22px;
}

.eyebrow .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #7dd3fc;
  box-shadow: 0 0 0 4px rgba(125, 211, 252, 0.18);
}

.hero h1 {
  color: #fff;
  margin-bottom: 18px;
  max-width: 15ch;
}

.hero .lead {
  max-width: 54ch;
  color: #cfe0ff;
  font-size: 1.06rem;
  line-height: 1.7;
  margin-bottom: 30px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 34px;
}

.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  padding: 0;
  margin: 0;
  list-style: none;
  font-size: 0.86rem;
  color: #dbeafe;
}

.hero-points li {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
}

.hero-points svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  color: #93c5fd;
}

/* Hero panel */

.hero-panel {
  background: rgba(255, 255, 255, 0.97);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: 0 30px 70px rgba(8, 20, 48, 0.35);
  color: var(--ink);
}

.hero-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}

.hero-panel-header span:first-child {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.live-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 9px;
  border-radius: 999px;
  background: #ecfdf5;
  color: #047857;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.live-pill::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #10b981;
}

.pool-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line-soft);
}

.pool-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0;
  padding: 13px 0;
  border-bottom: 1px solid var(--line-soft);
}

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

.pool-swatch {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

.pool-swatch.dc {
  background: #2563eb;
}

.pool-swatch.res {
  background: #0d9488;
}

.pool-swatch.prem {
  background: #7c3aed;
}

.pool-swatch.mob {
  background: #ea580c;
}

.pool-name {
  font-size: 0.94rem;
  font-weight: 600;
  color: var(--ink);
}

.pool-meta {
  margin-left: auto;
  font-size: 0.78rem;
  color: var(--muted);
  white-space: nowrap;
}

.hero-panel-footer {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--line-soft);
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  border-radius: 999px;
  background: var(--brand-50);
  color: var(--brand-700);
  font-size: 0.75rem;
  font-weight: 600;
}

/* ---------- Sections ---------- */

.section {
  padding: 84px 0;
}

.section-alt {
  background: var(--bg);
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}

.section-head {
  max-width: 760px;
  margin-bottom: 44px;
}

.section-head.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.kicker {
  display: block;
  color: var(--brand-600);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section-head p {
  color: var(--muted);
  font-size: 1rem;
  margin-bottom: 0;
}

/* ---------- Product cards ---------- */

.product-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.product-card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 22px 22px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.2s ease, transform 0.2s ease, border-color 0.2s ease;
}

.product-card:hover {
  border-color: var(--brand-200);
  box-shadow: var(--shadow);
  transform: translateY(-3px);
}

.product-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  margin-bottom: 18px;
  background: var(--brand-50);
  color: var(--brand-700);
}

.product-icon svg {
  width: 22px;
  height: 22px;
}

.product-card:nth-child(2) .product-icon {
  background: #ecfdf5;
  color: #0d9488;
}

.product-card:nth-child(3) .product-icon {
  background: #f5f3ff;
  color: #7c3aed;
}

.product-card:nth-child(4) .product-icon {
  background: #fff7ed;
  color: #ea580c;
}

.product-card h3 {
  margin-bottom: 8px;
}

.product-card p {
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.65;
  margin-bottom: 18px;
}

.product-price {
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid var(--line-soft);
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.price-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -0.02em;
}

.price-unit {
  font-size: 0.82rem;
  color: var(--muted);
  font-weight: 500;
}

.price-from {
  display: block;
  width: 100%;
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 600;
  margin-bottom: 2px;
}

/* M51：首页产品卡用覆盖数替代价格。 */
.product-coverage {
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid var(--line-soft);
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.coverage-label {
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 600;
}

.coverage-value {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -0.01em;
}

.product-list {
  list-style: none;
  padding: 0;
  margin: 0 0 18px;
}

.product-list li {
  position: relative;
  padding-left: 20px;
  margin: 0 0 6px;
  font-size: 0.84rem;
  color: var(--body);
}

.product-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 0.52em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--brand-500);
}

.pricing-note {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 22px;
  padding: 16px 20px;
  border: 1px dashed #cbd5e1;
  border-radius: var(--radius-sm);
  background: #fff;
  font-size: 0.84rem;
  color: var(--muted);
}

.pricing-note strong {
  color: var(--ink);
}

/* ---------- Pricing table ---------- */

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.table-wrap {
  overflow-x: auto;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.table-wrap table {
  width: 100%;
  min-width: 620px;
  border-collapse: collapse;
}

.table-wrap th,
.table-wrap td {
  padding: 16px 20px;
  text-align: left;
  border-bottom: 1px solid var(--line-soft);
  font-size: 0.9rem;
  vertical-align: top;
}

.table-wrap thead th {
  background: #f8fafc;
  color: var(--muted);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 700;
  white-space: nowrap;
}

.table-wrap tbody th {
  color: var(--ink);
  font-weight: 650;
  white-space: nowrap;
}

.table-wrap tbody td {
  color: var(--muted);
}

.table-wrap tbody tr:last-child th,
.table-wrap tbody tr:last-child td {
  border-bottom: 0;
}

.table-wrap tbody tr:hover {
  background: #fafcff;
}

.table-wrap tfoot th,
.table-wrap tfoot td {
  background: #f8fafc;
  border-top: 1px solid var(--line);
  border-bottom: 0;
  color: var(--ink);
  font-weight: 700;
}

.table-note {
  margin-top: 10px;
  color: var(--muted);
  font-size: 0.86rem;
}

.table-wrap .rate {
  color: var(--ink);
  font-weight: 600;
  white-space: nowrap;
}

/* ---------- Features ---------- */

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.feature-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}

.feature-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--brand-50);
  color: var(--brand-700);
  display: grid;
  place-items: center;
  margin-bottom: 16px;
}

.feature-icon svg {
  width: 20px;
  height: 20px;
}

.feature-card h3 {
  font-size: 1.02rem;
  margin-bottom: 6px;
}

.feature-card p {
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.65;
  margin: 0;
}

/* ---------- Steps ---------- */

.steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  counter-reset: step;
}

.step {
  position: relative;
  padding: 28px 24px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.step::before {
  counter-increment: step;
  content: "0" counter(step);
  display: block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--brand-600);
  margin-bottom: 14px;
}

.step h3 {
  font-size: 1.02rem;
  margin-bottom: 8px;
}

.step p {
  margin: 0;
  font-size: 0.88rem;
  color: var(--muted);
}

/* ---------- FAQ ---------- */

.faq {
  max-width: 860px;
  margin: 0 auto;
  border-top: 1px solid var(--line);
}

.faq details {
  border-bottom: 1px solid var(--line);
  padding: 4px 0;
}

.faq summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 4px;
  cursor: pointer;
  list-style: none;
  font-weight: 600;
  color: var(--ink);
  font-size: 0.98rem;
}

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

.faq summary::after {
  content: "+";
  flex-shrink: 0;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  border: 1px solid var(--line);
  display: grid;
  place-items: center;
  color: var(--brand-700);
  font-size: 1rem;
  line-height: 1;
  transition: transform 0.15s ease, background-color 0.15s ease;
}

.faq details[open] summary::after {
  content: "−";
  background: var(--brand-50);
  transform: rotate(180deg);
}

.faq .answer {
  padding: 0 4px 20px;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.7;
  max-width: 72ch;
}

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

/* ---------- CTA band ---------- */

.cta-band {
  background: linear-gradient(135deg, #1e3a8a 0%, #1d4ed8 55%, #2563eb 100%);
  color: #fff;
  padding: 64px 0;
}

.cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.cta-inner h2 {
  color: #fff;
  margin-bottom: 8px;
  font-size: clamp(1.5rem, 2.4vw, 2rem);
}

.cta-inner p {
  color: #cfe0ff;
  margin: 0;
  max-width: 56ch;
  font-size: 0.95rem;
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  flex-shrink: 0;
}

/* ---------- Footer ---------- */

.site-footer {
  background: #0b1220;
  color: #94a3b8;
  padding: 56px 0 28px;
  font-size: 0.87rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 40px;
}

.footer-brand .brand {
  color: #fff;
  margin-bottom: 14px;
}

.footer-brand p {
  color: #94a3b8;
  max-width: 34ch;
  font-size: 0.86rem;
  line-height: 1.7;
}

.footer-col h4 {
  color: #e2e8f0;
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 14px;
}

.footer-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-col li {
  margin: 0 0 9px;
}

.footer-col a {
  color: #94a3b8;
}

.footer-col a:hover {
  color: #fff;
}

.footer-bottom {
  margin-top: 44px;
  padding-top: 22px;
  border-top: 1px solid rgba(148, 163, 184, 0.18);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 0.8rem;
  color: #7c8ba1;
}

/* ---------- Legal / content pages ---------- */

.page-hero {
  background: var(--bg);
  border-bottom: 1px solid var(--line);
  padding: 56px 0 48px;
}

.page-hero h1 {
  font-size: clamp(1.9rem, 3.4vw, 2.7rem);
  margin-bottom: 10px;
}

.page-hero p {
  color: var(--muted);
  margin: 0;
  max-width: 70ch;
}

.legal-meta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
  padding: 5px 11px;
  border-radius: 999px;
  background: #fff;
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.78rem;
}

.page-preview-band {
  background: var(--surface);
  padding: 32px 0 0;
}

.page-preview {
  margin: 0 auto;
  max-width: 1000px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.page-preview img {
  display: block;
  width: 100%;
  height: auto;
}

.legal {
  padding: 56px 0 80px;
}

.legal-inner {
  max-width: 820px;
  margin: 0 auto;
}

.legal h2 {
  font-size: 1.3rem;
  margin: 40px 0 12px;
  padding-top: 8px;
}

.legal h2:first-of-type {
  margin-top: 0;
}

.legal h3 {
  font-size: 1.02rem;
  margin: 24px 0 8px;
}

.legal p,
.legal li {
  font-size: 0.94rem;
  line-height: 1.8;
  color: var(--body);
}

.legal ul {
  padding-left: 1.1em;
}

.legal .note {
  border-left: 3px solid var(--brand-500);
  background: var(--brand-50);
  padding: 14px 18px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: #1e3a8a;
  font-size: 0.9rem;
}

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

.legal a {
  font-weight: 500;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 40px;
  font-weight: 600;
  font-size: 0.88rem;
}

/* About page */

.about-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: start;
}

.about-grid h2 {
  margin-top: 0;
}

.value-list {
  display: grid;
  gap: 16px;
  margin-top: 26px;
}

.value-item {
  display: flex;
  gap: 14px;
  padding: 18px;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}

.value-item svg {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
  margin-top: 2px;
  color: var(--brand-600);
}

.value-item h3 {
  font-size: 0.98rem;
  margin-bottom: 4px;
}

.value-item p {
  margin: 0;
  font-size: 0.88rem;
  color: var(--muted);
}

.contact-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 104px;
}

.contact-card h3 {
  margin-bottom: 6px;
}

.contact-card > p {
  color: var(--muted);
  font-size: 0.88rem;
}

.contact-row {
  display: flex;
  gap: 12px;
  padding: 14px 0;
  border-top: 1px solid var(--line-soft);
}

.contact-row svg {
  width: 18px;
  height: 18px;
  color: var(--brand-600);
  flex-shrink: 0;
  margin-top: 3px;
}

.contact-row .label {
  display: block;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 2px;
}

.contact-row a,
.contact-row span.value {
  font-size: 0.94rem;
  color: var(--ink);
  font-weight: 500;
  word-break: break-word;
}

/* ---------- Responsive ---------- */

@media (max-width: 1024px) {
  .hero .container {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero-panel {
    max-width: 560px;
  }

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

  .footer-grid {
    grid-template-columns: 1.4fr 1fr 1fr;
  }

  .footer-col:last-child {
    grid-column: 2 / 4;
  }
}

@media (max-width: 900px) {
  .header-inner {
    flex-wrap: wrap;
    gap: 10px 24px;
    padding-top: 12px;
    padding-bottom: 10px;
  }

  .nav {
    order: 3;
    width: 100%;
    overflow-x: auto;
    gap: 20px;
    padding-bottom: 4px;
    -webkit-overflow-scrolling: touch;
  }

  .nav a {
    white-space: nowrap;
    font-size: 0.85rem;
  }

  .header-actions {
    margin-left: auto;
  }

  .feature-grid,
  .steps {
    grid-template-columns: 1fr 1fr;
  }

  .about-grid {
    grid-template-columns: 1fr;
  }

  .contact-card {
    position: static;
  }

  .cta-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 640px) {
  .container {
    padding: 0 20px;
  }

  /* 移动端 header：仅保留品牌 + 语言切换 + 主 CTA */
  .nav {
    display: none;
  }

  .header-actions .btn-secondary {
    display: none;
  }

  .header-actions {
    gap: 8px;
  }

  .hero {
    padding: 60px 0 56px;
  }

  .hero h1 {
    max-width: none;
  }

  .section {
    padding: 60px 0;
  }

  .product-grid,
  .feature-grid,
  .steps {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }

  .footer-col:last-child {
    grid-column: auto;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  .pricing-note {
    flex-direction: column;
    align-items: flex-start;
  }

  .page-hero {
    padding: 40px 0 36px;
  }

  .page-preview-band {
    padding: 24px 0 0;
  }

  .legal {
    padding: 40px 0 60px;
  }

  .legal h2 {
    margin-top: 32px;
  }
}

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

  *,
  *::before,
  *::after {
    transition: none !important;
    animation: none !important;
  }
}

/* M49-T01：营销扩展页（features/pricing/faq）内容配图 */
.content-figure {
  margin: 40px auto 0;
  max-width: 720px;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.content-figure img {
  width: 100%;
  height: auto;
}

/* M49-T02：文章页排版与 guides 索引 */
.article-section {
  padding: 56px 0 84px;
}

.article-container {
  max-width: 860px;
}

.article-back {
  margin-bottom: 8px;
  font-size: 0.88rem;
}

.article-body {
  color: var(--body);
}

.article-body > h1 {
  font-size: clamp(1.95rem, 3.4vw, 2.6rem);
  margin: 6px 0 0.6em;
}

.article-body h2 {
  margin-top: 2.2em;
  font-size: clamp(1.45rem, 2.3vw, 1.9rem);
}

.article-body h3 {
  margin-top: 1.7em;
}

.article-body h4 {
  margin-top: 1.4em;
  font-size: 1rem;
  font-weight: 700;
}

.article-body p,
.article-body li {
  font-size: 1.02rem;
  line-height: 1.78;
}

.article-body ul,
.article-body ol {
  margin-bottom: 1.3em;
}

.article-body code {
  background: var(--line-soft);
  border-radius: 6px;
  padding: 2px 6px;
  font-size: 0.9em;
}

.article-body .article-pre {
  margin: 1.4em 0;
  padding: 16px 18px;
  background: #0f172a;
  color: #e2e8f0;
  border-radius: 12px;
  overflow-x: auto;
  font-size: 0.86rem;
  line-height: 1.55;
}

.article-body .article-pre code {
  background: transparent;
  color: inherit;
  padding: 0;
}

.article-figure {
  margin: 1.6em 0 2.2em;
}

.article-figure img {
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.article-figure figcaption {
  margin-top: 10px;
  color: var(--muted);
  font-size: 0.82rem;
  text-align: center;
}

.article-body .table-wrap {
  margin: 1.6em 0;
}

.article-body a {
  text-decoration: underline;
  text-underline-offset: 2px;
}

.guide-group {
  margin-top: 52px;
}

.guide-group > h2 {
  font-size: 1.15rem;
  letter-spacing: 0.02em;
  margin-bottom: 18px;
}

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

.guide-card {
  display: flex;
  gap: 16px;
  padding: 14px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  color: var(--body);
  transition: box-shadow 0.2s ease, transform 0.2s ease, border-color 0.2s ease;
}

.guide-card:hover {
  border-color: var(--brand-200);
  box-shadow: var(--shadow);
  transform: translateY(-2px);
  color: var(--body);
}

.guide-thumb {
  flex: 0 0 132px;
  border-radius: 10px;
  overflow: hidden;
  background: var(--bg);
}

.guide-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.guide-body {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}

.guide-title {
  color: var(--ink);
  font-size: 0.98rem;
  font-weight: 650;
  line-height: 1.35;
}

.guide-desc {
  color: var(--muted);
  font-size: 0.85rem;
  line-height: 1.55;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.guide-more {
  margin-top: auto;
  color: var(--brand-600);
  font-size: 0.82rem;
  font-weight: 600;
}

@media (max-width: 900px) {
  .guide-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .article-section {
    padding: 36px 0 64px;
  }

  .guide-thumb {
    flex-basis: 96px;
  }
}

/* M49-T03：顶部导航按交付稿四大集群（下拉） */
.nav-drop {
  position: relative;
}

.nav-drop-toggle {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 6px 0;
  background: none;
  border: 0;
  border-bottom: 2px solid transparent;
  color: var(--body);
  font: inherit;
  font-size: 0.92rem;
  font-weight: 500;
  cursor: pointer;
}

.nav-drop-toggle:hover,
.nav-drop.is-open .nav-drop-toggle {
  color: var(--ink);
  border-bottom-color: var(--brand-200);
}

.nav-caret {
  transition: transform 0.18s ease;
}

.nav-drop.is-open .nav-caret {
  transform: rotate(180deg);
}

.nav-drop-menu {
  position: absolute;
  z-index: 50;
  top: calc(100% + 10px);
  left: -12px;
  min-width: 214px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 8px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--shadow);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-4px);
  transition: opacity 0.16s ease, transform 0.16s ease, visibility 0.16s;
}

.nav-drop.is-open .nav-drop-menu {
  opacity: 1;
  visibility: visible;
  transform: none;
}

.nav-drop-menu a {
  padding: 8px 10px;
  border-bottom: 0;
  border-radius: 8px;
  color: var(--body);
  font-size: 0.86rem;
  font-weight: 500;
  white-space: nowrap;
}

.nav-drop-menu a:hover {
  background: var(--bg);
  border-bottom-color: transparent;
  color: var(--ink);
}

@media (max-width: 900px) {
  .nav {
    flex-wrap: wrap;
    overflow: visible;
    gap: 10px 18px;
  }

  .nav-drop-menu {
    position: static;
    display: none;
    min-width: 0;
    padding: 6px 0 2px 10px;
    border: 0;
    box-shadow: none;
    opacity: 1;
    visibility: visible;
    transform: none;
  }

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

/* M50：pricing / locations 独立页组件 */

.statement {
  border-left: 3px solid var(--brand-500);
  background: var(--brand-50);
  padding: 26px 0;
  border-radius: var(--radius);
}

.statement-text {
  font-size: 1.05rem;
  color: var(--body);
  margin: 0;
}

.section-figure {
  margin: 28px 0;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.section-figure img {
  width: 100%;
  height: auto;
  display: block;
}

.section-figure figcaption {
  padding: 12px 18px;
  color: var(--muted);
  font-size: 0.82rem;
}

/* M54：首页地区目录入口改为 2×2 卡片，替代纯文本链接列表 */
.location-links {
  margin-top: 28px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.location-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 20px;
  min-height: 84px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  color: inherit;
  text-decoration: none;
  transition:
    transform 0.18s ease,
    border-color 0.18s ease,
    box-shadow 0.18s ease;
}

.location-card:hover {
  transform: translateY(-2px);
  border-color: var(--brand-200);
  box-shadow: var(--shadow);
}

.location-card:focus-visible {
  outline: 3px solid var(--brand-500);
  outline-offset: 2px;
}

.location-mark {
  flex: 0 0 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-sm);
  background: var(--brand-50);
  color: var(--brand-700);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.06em;
}

.location-copy {
  display: grid;
  gap: 4px;
  min-width: 0;
}

.location-copy strong {
  font-size: 0.98rem;
  line-height: 1.35;
  color: var(--ink);
}

.location-copy span {
  font-size: 0.84rem;
  line-height: 1.45;
  color: var(--muted);
}

.location-arrow {
  margin-left: auto;
  color: var(--brand-600);
  font-weight: 700;
  transition: transform 0.18s ease;
}

.location-card:hover .location-arrow {
  transform: translateX(3px);
}

@media (max-width: 720px) {
  .location-links {
    grid-template-columns: 1fr;
  }
}

.link-list {
  list-style: none;
  padding-left: 0;
  line-height: 1.55;
}

.link-list li + li {
  margin-top: 6px;
}

.link-list a {
  font-weight: 600;
}

.jump-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.jump-links a {
  padding: 4px 12px;
  border-radius: 999px;
  background: var(--brand-50);
  color: var(--brand-700);
  font-size: 0.84rem;
  font-weight: 600;
}

.avail-ok,
.avail-no {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 600;
  white-space: nowrap;
}

.avail-ok {
  background: #ecfdf5;
  color: #047857;
}

.avail-no {
  background: #fef2f2;
  color: #b91c1c;
}

.country-table table {
  min-width: 760px;
  font-size: 0.84rem;
}

.country-table th,
.country-table td {
  padding: 8px 10px;
  border-bottom: 1px solid var(--line-soft);
  text-align: left;
  vertical-align: top;
  font-size: 0.84rem;
}

.country-table thead th {
  background: var(--bg);
  font-size: 0.78rem;
}

.country-table th[scope="row"] {
  color: var(--ink);
  font-weight: 600;
  white-space: nowrap;
}

@media (max-width: 720px) {
  .country-table table,
  .country-table th,
  .country-table td {
    font-size: 0.8rem;
  }
}