html {
  box-sizing: border-box;
}

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

:root {
  --ink: #252a2c;
  --muted: #4d5853;
  --line: rgba(37, 42, 44, 0.12);
  --teal: #2f6a4c;
  --teal-deep: #1f4a36;
  --wash: #dfe8e2;
  --paper: #eef3ef;
  --sheet: #f7faf7;
  --heart: #c24b3c;
  --display: "Songti SC", "Noto Serif SC", "STSong", "Source Han Serif SC", serif;
  --sans: "PingFang SC", "Noto Sans SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --space: 1.5rem;
  --wide: 72rem;
  --measure: 40rem;
}

html {
  scroll-padding-top: 5.5rem;
}

html,
body {
  margin: 0;
  padding: 0;
  max-width: 100%;
  overflow-x: hidden;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}

body {
  min-height: 100dvh;
  background-image:
    radial-gradient(1200px 480px at 100% -10%, rgba(47, 106, 76, 0.08), transparent 58%),
    radial-gradient(900px 420px at -10% 110%, rgba(47, 106, 76, 0.06), transparent 55%);
}

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

a {
  color: var(--teal-deep);
  text-underline-offset: 0.16em;
}

a:hover {
  color: var(--teal);
}

:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 3px;
}

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

.skip {
  position: absolute;
  left: 12px;
  top: -40px;
  z-index: 8;
  padding: 8px 12px;
  background: var(--sheet);
}

.skip:focus {
  top: 12px;
}

.lang-switch {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  overflow-x: clip;
}

.wrap {
  width: min(calc(100% - 2rem), var(--wide));
  margin-inline: auto;
  min-width: 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 6;
  background: color-mix(in srgb, var(--paper) 88%, white);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
  max-width: 100%;
}

.site-header .wrap {
  display: flex;
  align-items: center;
  gap: 16px;
  min-height: 68px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: inherit;
  text-decoration: none;
  min-height: 44px;
  flex-shrink: 0;
}

.brand img {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: #f6f1e8;
}

.brand-name {
  font-family: var(--display);
  font-weight: 600;
  font-size: 1.125rem;
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.nav {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.site-header .lang-toggle {
  margin-left: 8px;
}

.header-store {
  display: none;
  margin-left: 8px;
  min-height: 44px;
  padding: 0 12px;
  color: var(--teal-deep);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 600;
  white-space: nowrap;
}

.nav a,
.lang-toggle a,
.lang-toggle label {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 12px;
  color: var(--ink);
  text-decoration: none;
  font-size: 0.9375rem;
}

.nav a[aria-current="page"] {
  box-shadow: inset 0 -2px 0 var(--teal);
}

.lang-toggle {
  display: inline-flex;
  margin-left: 4px;
  border: 1px solid var(--line);
  background: var(--sheet);
}

.lang-toggle a,
.lang-toggle label {
  cursor: pointer;
  min-width: 48px;
  color: var(--muted);
}

.lang-toggle a[aria-current="true"],
#lang-zh:checked ~ .page .lang-toggle label[for="lang-zh"],
#lang-en:checked ~ .page .lang-toggle label[for="lang-en"] {
  background: var(--teal);
  color: #f4f8f5;
}

.hero {
  padding: 48px 0 32px;
}

.hero-grid {
  display: grid;
  gap: 40px;
  min-width: 0;
}

.kicker {
  margin: 0 0 12px;
  color: var(--muted);
  font-size: 0.9375rem;
}

.live-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 16px;
  padding: 6px 12px 6px 10px;
  border: 1px solid var(--line);
  background: var(--sheet);
  color: var(--teal-deep);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.live-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--teal);
  flex-shrink: 0;
}

.definition {
  margin: 0 0 24px;
  max-width: 38rem;
  padding: 14px 0 0;
  color: var(--ink);
  font-size: 1.125rem;
}

.store-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  margin: 0 0 24px;
  color: var(--muted);
  font-size: 0.9375rem;
}

.crumbs {
  margin: 0 0 20px;
  font-size: 0.875rem;
}

.crumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  color: var(--muted);
}

.crumbs li:not(:last-child)::after {
  content: "/";
  margin-left: 8px;
  color: var(--line);
}

.crumbs a {
  color: var(--teal-deep);
  text-decoration: none;
}

.crumbs [aria-current="page"] {
  color: var(--ink);
}

.hero h1 {
  margin: 0 0 16px;
  font-family: var(--display);
  font-weight: 600;
  font-size: clamp(2.25rem, 7vw, 4.25rem);
  line-height: 1.12;
  letter-spacing: -0.03em;
  text-wrap: balance;
  max-width: 18ch;
}

.lede {
  margin: 0 0 28px;
  max-width: 36rem;
  color: var(--muted);
  font-size: 1.125rem;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 28px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border-radius: 4px;
  text-decoration: none;
  font-weight: 600;
}

.btn-solid {
  background: var(--teal);
  color: #f4f8f5;
}

.btn-solid:hover {
  background: var(--teal-deep);
  color: #f4f8f5;
}

.btn-line {
  border: 1px solid var(--teal);
  color: var(--teal-deep);
  background: transparent;
}

.facts {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.facts div {
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.facts b {
  display: block;
  font-family: var(--display);
  font-size: 1.25rem;
  font-weight: 600;
}

.facts span {
  color: var(--muted);
  font-size: 0.9375rem;
}

.hero-phones {
  display: flex;
  gap: 12px;
  min-width: 0;
  max-width: 100%;
  overflow-x: auto;
  padding-bottom: 8px;
  scroll-snap-type: x mandatory;
}

.phone {
  flex: 0 0 min(72vw, 280px);
  max-width: calc(100vw - 3rem);
  scroll-snap-align: start;
  margin: 0;
  padding: 8px;
  background: #1e2a24;
  border-radius: 24px;
}

.phone img {
  width: 100%;
  border-radius: 16px;
  background: #fff;
}

.ledger {
  padding: 16px 0 64px;
}

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

.ledger li {
  display: grid;
  grid-template-columns: 4.5rem 1fr;
  gap: 16px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.ledger time,
.ledger .mark {
  font-variant-numeric: tabular-nums;
  color: var(--teal-deep);
  font-weight: 600;
}

.feature {
  padding: 24px 0;
}

.feature-grid {
  display: grid;
  gap: 32px;
  align-items: center;
  padding: 48px 0;
  border-top: 1px solid var(--line);
}

.feature h2,
.prose h1,
.prose h2,
.doc h2 {
  font-family: var(--display);
  font-weight: 600;
  letter-spacing: -0.02em;
  text-wrap: balance;
  line-height: 1.2;
}

.feature h2 {
  margin: 0 0 12px;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
}

.feature p {
  margin: 0;
  max-width: var(--measure);
  color: var(--muted);
}

.feature-shot {
  margin: 0;
}

.feature-shot img {
  width: min(100%, 360px);
  margin-inline: auto;
  padding: 8px;
  border-radius: 24px;
  background: #1e2a24;
}

.languages,
.local-first,
.boundary,
.page-end {
  padding: 48px 0;
}

.languages {
  border-top: 1px solid var(--line);
}

.chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.chip-list li {
  padding: 8px 12px;
  background: var(--sheet);
  border: 1px solid var(--line);
  font-size: 0.9375rem;
}

.local-grid {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.local-grid article {
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
}

.local-grid h3,
.qa dt,
.doc h3 {
  margin: 0 0 8px;
  font-family: var(--display);
  font-size: 1.35rem;
  font-weight: 600;
}

.local-grid p,
.qa dd {
  margin: 0;
  color: var(--muted);
}

.notice {
  padding: 24px;
  background: #f8eee9;
  border: 1px solid rgba(194, 75, 60, 0.22);
}

.notice h2 {
  margin: 0 0 8px;
  font-family: var(--display);
  font-size: 1.5rem;
}

.notice p {
  margin: 0;
  max-width: var(--measure);
}

.site-footer {
  margin-top: auto;
  padding: 32px 0 48px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.9375rem;
}

.site-footer .wrap {
  display: grid;
  gap: 16px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
}

.page-hero {
  padding: 48px 0 24px;
}

.page-hero h1 {
  margin: 0 0 12px;
  font-family: var(--display);
  font-size: clamp(2rem, 6vw, 3.5rem);
  line-height: 1.15;
  letter-spacing: -0.03em;
  max-width: 16ch;
}

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

.how {
  padding: 12px 0 32px;
}

.how article {
  padding: 28px 0;
  border-top: 1px solid var(--line);
}

.how h2 {
  margin: 0 0 8px;
  font-family: var(--display);
  font-size: 1.75rem;
}

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

.how ul {
  margin: 12px 0 0;
  padding-left: 1.2rem;
}

.qa {
  padding: 12px 0 48px;
}

.qa dl {
  margin: 20px 0 0;
}

.qa div {
  display: grid;
  gap: 8px;
  padding: 24px 0;
  border-top: 1px solid var(--line);
}

.doc {
  padding-bottom: 64px;
}

.doc .meta {
  color: var(--muted);
  margin-bottom: 32px;
}

.doc h2 {
  margin: 36px 0 8px;
  font-size: 1.5rem;
}

.doc p,
.doc li {
  max-width: 46rem;
}

.doc ul {
  padding-left: 1.2rem;
}

.contact-box {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  padding: 20px 0 48px;
}

@media (max-width: 720px) {
  .site-header .wrap {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    grid-template-rows: auto auto;
    column-gap: 8px;
    row-gap: 0;
    min-height: 0;
    padding-block: 8px;
  }

  .brand {
    grid-column: 1;
    grid-row: 1;
    min-width: 0;
  }

  .site-header .lang-toggle {
    grid-column: 2;
    grid-row: 1;
    margin-left: 0;
  }

  .nav {
    grid-column: 1 / -1;
    grid-row: 2;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    width: 100%;
    margin-left: 0;
    justify-content: stretch;
  }

  .nav a {
    padding-inline: 4px;
  }

  .lang-toggle a,
  .lang-toggle label {
    min-width: 40px;
    padding-inline: 8px;
  }

  .nav a,
  .lang-toggle a,
  .lang-toggle label {
    padding-inline: 8px;
    font-size: 0.875rem;
  }

  .lang-toggle {
    margin-left: 0;
  }

  .hero {
    padding-top: 32px;
  }
}

@media (min-width: 860px) {
  .header-store {
    display: inline-flex;
    align-items: center;
  }

  .hero-grid {
    grid-template-columns: minmax(0, 1fr) minmax(20rem, 0.9fr);
    align-items: end;
  }

  .glance dl,
  .audience-grid {
    grid-template-columns: 1fr 1fr;
  }

  .glance {
    display: block;
  }

  .glance dl {
    display: grid;
  }

  .audience-grid {
    display: grid;
    column-gap: 48px;
  }

  .hero-phones {
    display: grid;
    grid-template-columns: 1fr 1fr;
    overflow: visible;
    align-items: end;
  }

  .phone {
    flex: none;
  }

  .phone:last-child {
    transform: translateY(-24px);
  }

  .facts {
    grid-template-columns: repeat(3, 1fr);
    gap: 0 24px;
  }

  .feature-grid {
    grid-template-columns: 1fr 1fr;
    gap: 64px;
  }

  .feature-grid.reverse .copy {
    order: 2;
  }

  .local-grid,
  .qa {
    grid-template-columns: 1fr;
  }

  .qa div {
    grid-template-columns: minmax(12rem, 18rem) 1fr;
    gap: 32px;
    align-items: start;
  }

  .site-footer .wrap {
    grid-template-columns: 1fr auto;
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation: none !important;
    transition: none !important;
  }
}

.faq-lead {
  max-width: var(--measure);
  color: var(--muted);
}

.glance {
  padding: 8px 0 48px;
}

.glance dl {
  margin: 0;
  border-top: 1px solid var(--line);
}

.glance div {
  display: grid;
  gap: 8px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.glance dt {
  font-weight: 600;
  color: var(--teal-deep);
}

.glance dd {
  margin: 0;
  color: var(--muted);
}

.audience,
.compare,
.start,
.home-qa {
  padding: 48px 0;
  border-top: 1px solid var(--line);
}

.audience-grid {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.audience-grid article {
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
}

.audience-grid h3 {
  margin: 0 0 8px;
  font-family: var(--display);
  font-size: 1.35rem;
}

.audience-grid ul {
  margin: 0;
  padding-left: 1.2rem;
  color: var(--muted);
}

.audience-grid li + li {
  margin-top: 6px;
}

.compare-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 20px;
  font-size: 0.9375rem;
}

.compare-table th,
.compare-table td {
  padding: 14px 12px 14px 0;
  border-bottom: 1px solid var(--line);
  text-align: start;
  vertical-align: top;
}

.compare-table th {
  font-family: var(--display);
  font-weight: 600;
}

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

.compare-table th:first-child,
.compare-table td:first-child {
  color: var(--ink);
  font-weight: 600;
  width: 28%;
}

.start ol {
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.start li {
  display: grid;
  grid-template-columns: 2.5rem 1fr;
  gap: 12px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.start .step {
  font-variant-numeric: tabular-nums;
  color: var(--teal-deep);
  font-weight: 600;
}

.start p {
  margin: 0;
  color: var(--muted);
}

.doc-toc {
  margin: 0 0 32px;
  padding: 0;
  list-style: none;
  max-width: 36rem;
}

.doc-toc li {
  padding: 8px 0;
  border-bottom: 1px solid var(--line);
}

.doc-toc a {
  text-decoration: none;
  color: var(--teal-deep);
}

.how-toc {
  margin: 0 0 8px;
  padding: 0 0 24px;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
}

.how-toc a {
  color: var(--teal-deep);
  text-decoration: none;
}

.section-lead {
  margin: 0 0 8px;
  max-width: var(--measure);
  color: var(--muted);
}

.contact-box .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
}

.contact-box p {
  margin: 0;
  flex-basis: 100%;
  max-width: 36rem;
  color: var(--muted);
}

@media print {
  .site-header,
  .cta-row,
  .lang-toggle,
  .hero-phones,
  .site-footer .footer-links {
    display: none !important;
  }

  body {
    background: white;
    color: black;
  }
}