:root {
  --ink: #201b26;
  --muted: #6e6872;
  --paper: #f7f3ec;
  --surface: #fffdf8;
  --plum: #4b2b57;
  --plum-dark: #2b1833;
  --gold: #c89535;
  --mint: #2d9b7b;
  --coral: #df6558;
  --line: #ded7cd;
  --shadow: 0 18px 46px rgba(42, 30, 48, 0.13);
  --radius: 6px;
  --container: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  line-height: 1.75;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  content: "";
  opacity: 0.22;
  background-image: linear-gradient(rgba(75, 43, 87, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(75, 43, 87, 0.08) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
}

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

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

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

.container {
  width: min(calc(100% - 40px), var(--container));
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 1000;
  padding: 9px 14px;
  color: #fff;
  background: var(--plum-dark);
  transform: translateY(-150%);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid rgba(222, 215, 205, 0.9);
  background: rgba(247, 243, 236, 0.96);
  backdrop-filter: blur(12px);
}

.nav-shell {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
  font-size: 19px;
  font-weight: 800;
}

.brand img {
  width: 42px;
  height: 42px;
}

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

.nav-links a:not(.download-button) {
  position: relative;
  font-size: 15px;
  font-weight: 700;
}

.nav-links a:not(.download-button)::after {
  position: absolute;
  right: 0;
  bottom: -7px;
  left: 0;
  height: 2px;
  content: "";
  background: var(--coral);
  transform: scaleX(0);
  transition: transform 180ms ease;
}

.nav-links a:hover::after,
.nav-links a[aria-current="page"]::after {
  transform: scaleX(1);
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--surface);
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  height: 2px;
  margin: 4px 0;
  background: var(--ink);
}

.download-button {
  display: inline-flex;
  min-height: 46px;
  padding: 10px 22px;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--plum-dark);
  border-radius: 4px;
  color: #fff;
  background: var(--plum-dark);
  box-shadow: 5px 5px 0 var(--gold);
  font-weight: 800;
  transition: transform 160ms ease, box-shadow 160ms ease;
}

.download-button:hover {
  transform: translate(2px, 2px);
  box-shadow: 3px 3px 0 var(--gold);
}

.download-button.secondary {
  color: var(--plum-dark);
  background: var(--surface);
}

.hero {
  overflow: hidden;
  padding: 76px 0 64px;
  border-bottom: 1px solid var(--line);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
  align-items: center;
  gap: 60px;
}

.eyebrow {
  display: inline-flex;
  margin: 0 0 18px;
  padding: 5px 10px;
  border: 1px solid var(--gold);
  color: var(--plum);
  background: #fff8e7;
  font-size: 13px;
  font-weight: 800;
}

h1,
h2,
h3 {
  margin-top: 0;
  line-height: 1.25;
  letter-spacing: 0;
}

h1 {
  max-width: 700px;
  margin-bottom: 20px;
  font-family: Georgia, "Microsoft YaHei", serif;
  font-size: clamp(42px, 6vw, 72px);
}

h2 {
  margin-bottom: 28px;
  font-family: Georgia, "Microsoft YaHei", serif;
  font-size: clamp(28px, 4vw, 44px);
}

h3 {
  margin-bottom: 10px;
  font-size: 20px;
}

.hero-copy {
  max-width: 640px;
  margin: 0 0 28px;
  color: #544e57;
  font-size: 18px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 30px;
}

.trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin: 0;
  padding: 0;
  list-style: none;
  color: var(--muted);
  font-size: 14px;
}

.trust-row li::before {
  margin-right: 7px;
  color: var(--mint);
  content: "◆";
}

.hero-visual {
  position: relative;
  min-height: 580px;
  display: grid;
  place-items: center;
}

.hero-visual::before {
  position: absolute;
  width: 84%;
  height: 82%;
  border: 2px solid var(--plum);
  content: "";
  background: #eadfbf;
  box-shadow: 18px 18px 0 var(--plum-dark);
  transform: rotate(-4deg);
}

.phone-shot {
  position: relative;
  z-index: 2;
  width: min(100%, 300px);
  max-width: 400px;
  height: auto;
  border: 7px solid var(--ink);
  border-radius: 30px;
  box-shadow: var(--shadow);
}

.shot-note {
  position: absolute;
  right: 0;
  bottom: 30px;
  z-index: 3;
  padding: 12px 16px;
  border: 1px solid var(--line);
  background: var(--surface);
  font-size: 13px;
  font-weight: 700;
}

.stat-strip {
  background: var(--plum-dark);
  color: #fff;
}

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

.stat {
  min-height: 112px;
  padding: 24px;
  border-right: 1px solid rgba(255, 255, 255, 0.16);
}

.stat:last-child {
  border-right: 0;
}

.stat strong {
  display: block;
  color: #f1c86f;
  font-size: 25px;
}

.stat span {
  color: #ddd1e0;
  font-size: 13px;
}

.section {
  padding: 86px 0;
}

.section-tight {
  padding: 64px 0;
}

.section-accent {
  border-block: 1px solid var(--line);
  background: var(--surface);
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 30px;
  margin-bottom: 34px;
}

.section-heading h2 {
  margin-bottom: 0;
}

.text-link {
  color: var(--plum);
  font-weight: 800;
  text-decoration: underline;
  text-decoration-color: var(--gold);
  text-underline-offset: 5px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--line);
}

.feature-item {
  min-height: 240px;
  padding: 30px;
  background: var(--surface);
}

.feature-number {
  display: inline-grid;
  width: 34px;
  height: 34px;
  margin-bottom: 34px;
  place-items: center;
  border: 1px solid var(--gold);
  color: var(--plum);
  background: #fff9e9;
  font-size: 12px;
  font-weight: 900;
}

.feature-item p,
.step-copy p,
.article-copy p,
.article-copy li {
  color: #5c565f;
}

.showcase-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  align-items: start;
}

.showcase-item {
  margin: 0;
}

.showcase-frame {
  padding: 18px;
  border: 1px solid var(--line);
  background: #e9dfcf;
}

.showcase-frame img {
  width: min(100%, 320px);
  max-width: 400px;
  height: auto;
  margin: 0 auto;
  border: 5px solid var(--ink);
  border-radius: 24px;
}

.showcase-item figcaption {
  padding-top: 18px;
  color: var(--muted);
  font-size: 14px;
}

.showcase-item figcaption strong {
  display: block;
  color: var(--ink);
  font-size: 17px;
}

.route-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.route-card {
  min-height: 290px;
  padding: 34px;
  border: 1px solid var(--line);
  background: var(--surface);
}

.route-card:first-child {
  border-top: 6px solid var(--mint);
}

.route-card:last-child {
  border-top: 6px solid var(--coral);
}

.route-card ul {
  padding-left: 20px;
  color: var(--muted);
}

.quote-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.quote-card {
  margin: 0;
  padding: 28px;
  border-left: 4px solid var(--gold);
  background: var(--surface);
}

.quote-card cite {
  display: block;
  margin-top: 18px;
  color: var(--muted);
  font-size: 13px;
  font-style: normal;
}

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

.faq-list details {
  border-bottom: 1px solid var(--line);
  background: rgba(255, 253, 248, 0.72);
}

.faq-list summary {
  position: relative;
  padding: 22px 52px 22px 18px;
  cursor: pointer;
  font-weight: 800;
  list-style: none;
}

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

.faq-list summary::after {
  position: absolute;
  top: 20px;
  right: 20px;
  color: var(--plum);
  content: "+";
  font-size: 24px;
  line-height: 1;
}

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

.faq-list details p {
  margin: 0;
  padding: 0 52px 24px 18px;
  color: var(--muted);
}

.download-band {
  padding: 62px 0;
  color: #fff;
  background: var(--plum);
}

.download-band .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 34px;
}

.download-band h2 {
  margin-bottom: 8px;
  font-size: 34px;
}

.download-band p {
  margin: 0;
  color: #e5dce8;
}

.download-band .download-button {
  flex: 0 0 auto;
  color: var(--ink);
  background: #fff7e4;
}

.page-hero {
  padding: 70px 0 54px;
  border-bottom: 1px solid var(--line);
  background: var(--surface);
}

.page-hero h1 {
  max-width: 900px;
  font-size: clamp(38px, 5vw, 62px);
}

.page-hero p {
  max-width: 760px;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 18px;
}

.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 54px;
  align-items: start;
}

.article-copy section {
  margin-bottom: 62px;
}

.article-copy h2 {
  padding-bottom: 14px;
  border-bottom: 2px solid var(--ink);
  font-size: 32px;
}

.article-copy h3 {
  margin-top: 28px;
}

.article-copy ol,
.article-copy ul {
  padding-left: 24px;
}

.article-copy a {
  color: var(--plum);
  font-weight: 700;
  text-decoration: underline;
  text-decoration-color: var(--gold);
  text-underline-offset: 4px;
}

.side-nav {
  position: sticky;
  top: 98px;
  padding: 22px;
  border: 1px solid var(--line);
  background: var(--surface);
}

.side-nav strong {
  display: block;
  margin-bottom: 12px;
}

.side-nav a {
  display: block;
  padding: 8px 0;
  border-bottom: 1px dotted var(--line);
  color: var(--muted);
  font-size: 14px;
}

.guide-steps {
  counter-reset: steps;
}

.guide-step {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  gap: 22px;
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
  counter-increment: steps;
}

.guide-step::before {
  display: grid;
  width: 54px;
  height: 54px;
  place-items: center;
  border: 2px solid var(--plum);
  color: var(--plum);
  content: counter(steps, decimal-leading-zero);
  font-family: Georgia, serif;
  font-weight: 800;
}

.guide-step h3 {
  margin-top: 4px;
}

.check-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--surface);
}

.check-table th,
.check-table td {
  padding: 15px 16px;
  border: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.check-table th {
  width: 30%;
  color: var(--plum-dark);
  background: #efe7d9;
}

.notice {
  padding: 22px 24px;
  border-left: 5px solid var(--coral);
  background: #fff5ef;
}

.site-footer {
  padding: 52px 0 28px;
  color: #dbd1de;
  background: #1c1420;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 44px;
  margin-bottom: 38px;
}

.footer-brand {
  color: #fff;
}

.footer-grid h2 {
  margin-bottom: 16px;
  font-size: 20px;
}

.footer-grid p,
.footer-grid a {
  color: #bdb1c2;
  font-size: 14px;
}

.footer-links a {
  display: block;
  padding: 4px 0;
}

.footer-bottom {
  padding-top: 22px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  color: #9f93a4;
  font-size: 12px;
}

.disclaimer {
  margin-bottom: 8px;
}

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 500ms ease, transform 500ms ease;
}

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

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

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

@media (max-width: 900px) {
  .menu-toggle {
    display: block;
    margin-left: auto;
  }

  .nav-links {
    position: absolute;
    top: 72px;
    right: 20px;
    left: 20px;
    display: none;
    padding: 18px;
    border: 1px solid var(--line);
    background: var(--surface);
    box-shadow: var(--shadow);
  }

  .nav-links.is-open {
    display: grid;
  }

  .nav-links .download-button {
    width: 100%;
  }

  .hero-grid,
  .article-layout {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    min-height: 500px;
  }

  .side-nav {
    position: static;
    order: -1;
  }

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

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

@media (max-width: 620px) {
  .container {
    width: min(calc(100% - 28px), var(--container));
  }

  .brand {
    font-size: 17px;
  }

  .hero {
    padding-top: 48px;
  }

  h1 {
    font-size: 40px;
  }

  .hero-grid {
    gap: 28px;
  }

  .hero-visual {
    min-height: 460px;
  }

  .hero-visual::before {
    width: 88%;
    height: 76%;
  }

  .phone-shot {
    width: 250px;
  }

  .shot-note {
    right: 6px;
    bottom: 14px;
  }

  .feature-grid,
  .showcase-grid,
  .route-grid,
  .quote-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .stat {
    padding: 18px;
  }

  .section,
  .section-tight {
    padding: 58px 0;
  }

  .section-heading,
  .download-band .container {
    align-items: flex-start;
    flex-direction: column;
  }

  .guide-step {
    grid-template-columns: 1fr;
  }

  .check-table,
  .check-table tbody,
  .check-table tr,
  .check-table th,
  .check-table td {
    display: block;
    width: 100%;
  }
}