:root {
  --ink: #171923;
  --paper: #f7f7f2;
  --white: #ffffff;
  --teal: #12b8a6;
  --teal-dark: #087f76;
  --pink: #ff4f86;
  --yellow: #ffc857;
  --muted: #626571;
  --line: #d9dbe1;
  --shadow: 8px 8px 0 var(--ink);
  --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;
  letter-spacing: 0;
}

body.menu-open {
  overflow: hidden;
}

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

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

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

button,
.button {
  font: inherit;
}

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

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(247, 247, 242, 0.96);
  border-bottom: 3px solid var(--ink);
  backdrop-filter: blur(12px);
}

.nav-wrap {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
  font-weight: 900;
  white-space: nowrap;
}

.brand img {
  width: 42px;
  height: 42px;
  border: 2px solid var(--ink);
  border-radius: 7px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.main-nav a:not(.button) {
  padding: 8px 12px;
  font-size: 15px;
  font-weight: 700;
  border-bottom: 3px solid transparent;
}

.main-nav a[aria-current="page"],
.main-nav a:not(.button):hover {
  border-color: var(--pink);
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: var(--white);
  border: 2px solid var(--ink);
  border-radius: 5px;
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 100%;
  height: 3px;
  margin: 4px 0;
  background: var(--ink);
}

.button {
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  color: var(--white);
  background: var(--ink);
  border: 2px solid var(--ink);
  border-radius: 5px;
  font-weight: 800;
  cursor: pointer;
  transition: transform 160ms ease, box-shadow 160ms ease;
}

.button:hover {
  transform: translate(-2px, -2px);
  box-shadow: 4px 4px 0 var(--pink);
}

.button-primary {
  color: var(--ink);
  background: var(--yellow);
}

.button-light {
  color: var(--ink);
  background: var(--white);
}

.button-small {
  min-height: 40px;
  padding: 7px 15px;
  font-size: 14px;
}

.hero {
  position: relative;
  overflow: hidden;
  border-bottom: 3px solid var(--ink);
}

.hero::after {
  content: "E";
  position: absolute;
  right: -30px;
  bottom: -170px;
  color: rgba(18, 184, 166, 0.12);
  font-size: 520px;
  line-height: 1;
  font-weight: 950;
  pointer-events: none;
}

.hero-grid {
  min-height: 660px;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(340px, 0.75fr);
  align-items: center;
  gap: 70px;
  padding-block: 64px 52px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 14px;
  color: var(--teal-dark);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

.eyebrow::before {
  content: "";
  width: 26px;
  height: 5px;
  background: var(--pink);
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2,
h3 {
  line-height: 1.28;
  letter-spacing: 0;
}

h1 {
  margin-bottom: 20px;
  font-size: clamp(42px, 7vw, 76px);
  font-weight: 950;
}

h2 {
  margin-bottom: 28px;
  font-size: clamp(30px, 4vw, 46px);
  font-weight: 950;
}

h3 {
  margin-bottom: 10px;
  font-size: 20px;
  font-weight: 900;
}

.hero-lead {
  max-width: 650px;
  margin-bottom: 28px;
  color: #454851;
  font-size: 18px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 28px;
}

.hero-notes {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.chip {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 4px 10px;
  background: var(--white);
  border: 2px solid var(--ink);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 800;
}

.phone-stage {
  position: relative;
  z-index: 2;
  display: grid;
  place-items: center;
}

.phone-stage::before {
  content: "";
  position: absolute;
  width: 310px;
  height: 450px;
  background: var(--pink);
  border: 3px solid var(--ink);
  transform: rotate(7deg) translate(18px, 8px);
}

.phone-frame {
  position: relative;
  width: min(310px, 78vw);
  padding: 12px;
  background: var(--ink);
  border: 3px solid var(--ink);
  border-radius: 28px;
  box-shadow: var(--shadow);
}

.phone-frame::before {
  content: "";
  position: absolute;
  top: 17px;
  left: 50%;
  width: 76px;
  height: 8px;
  background: var(--ink);
  border-radius: 99px;
  transform: translateX(-50%);
}

.phone-frame img {
  display: block;
  width: 100%;
  max-width: 400px;
  border-radius: 18px;
}

.stat-strip {
  background: var(--ink);
  color: var(--white);
}

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

.stat-item {
  min-height: 112px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 20px 28px;
  border-right: 1px solid #454750;
}

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

.stat-item strong {
  color: var(--yellow);
  font-size: 24px;
  line-height: 1.2;
}

.stat-item span {
  color: #cfd1d9;
  font-size: 13px;
}

.section {
  padding-block: 86px;
}

.section-compact {
  padding-block: 60px;
}

.section-dark {
  color: var(--white);
  background: var(--ink);
}

.section-teal {
  background: var(--teal);
  border-block: 3px solid var(--ink);
}

.section-pink {
  background: #fff0f5;
  border-block: 3px solid var(--ink);
}

.section-heading {
  max-width: 760px;
  margin-bottom: 34px;
}

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

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.feature-card {
  min-height: 240px;
  padding: 28px;
  background: var(--white);
  border: 3px solid var(--ink);
  border-radius: 6px;
}

.feature-card:nth-child(2),
.feature-card:nth-child(5) {
  background: #e9fffb;
}

.feature-card:nth-child(3) {
  background: #fff4d9;
}

.feature-no {
  display: inline-grid;
  width: 40px;
  height: 40px;
  margin-bottom: 22px;
  place-items: center;
  color: var(--white);
  background: var(--pink);
  border: 2px solid var(--ink);
  border-radius: 50%;
  font-weight: 900;
}

.feature-card p,
.route-card p,
.step-copy p,
.content-block p,
.review-card p {
  color: #51545e;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
  align-items: end;
}

.shot {
  position: relative;
  margin: 0;
}

.shot:nth-child(even) {
  transform: translateY(24px);
}

.shot-button {
  display: block;
  width: 100%;
  padding: 0;
  background: transparent;
  border: 0;
  cursor: zoom-in;
}

.shot img {
  display: block;
  width: 100%;
  max-width: 400px;
  margin-inline: auto;
  border: 3px solid var(--ink);
  border-radius: 6px;
  box-shadow: 7px 7px 0 var(--pink);
}

.shot figcaption {
  margin-top: 16px;
  font-size: 14px;
  font-weight: 800;
}

.route-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
}

.route-card {
  position: relative;
  min-height: 270px;
  padding: 34px;
  overflow: hidden;
  background: var(--white);
  border: 3px solid var(--ink);
  border-radius: 6px;
}

.route-card::after {
  content: attr(data-mark);
  position: absolute;
  right: 16px;
  bottom: -38px;
  color: #eef0f1;
  font-size: 150px;
  line-height: 1;
  font-weight: 950;
}

.route-card > * {
  position: relative;
  z-index: 1;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--teal-dark);
  font-weight: 900;
  border-bottom: 2px solid currentColor;
}

.review-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.review-card {
  padding: 26px;
  background: var(--white);
  border: 3px solid var(--ink);
  border-radius: 6px;
}

.stars {
  margin-bottom: 12px;
  color: #cc7a00;
  font-size: 18px;
  letter-spacing: 0;
}

.reviewer {
  font-size: 13px;
  font-weight: 900;
}

.faq-list {
  display: grid;
  gap: 12px;
}

.faq-item {
  background: var(--white);
  border: 2px solid var(--ink);
  border-radius: 5px;
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 20px 22px;
  color: var(--ink);
  background: transparent;
  border: 0;
  text-align: left;
  font-weight: 900;
  cursor: pointer;
}

.faq-question::after {
  content: "+";
  flex: 0 0 32px;
  display: grid;
  width: 32px;
  height: 32px;
  place-items: center;
  color: var(--white);
  background: var(--ink);
  border-radius: 50%;
  font-size: 22px;
}

.faq-question[aria-expanded="true"]::after {
  content: "−";
  background: var(--pink);
}

.faq-answer {
  padding: 0 22px 20px;
  color: #4f525b;
}

.faq-answer[hidden] {
  display: none;
}

.cta-band {
  padding-block: 54px;
  color: var(--ink);
  background: var(--yellow);
  border-block: 3px solid var(--ink);
}

.cta-layout {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.cta-layout h2 {
  margin-bottom: 8px;
  font-size: clamp(28px, 4vw, 42px);
}

.cta-layout p {
  margin-bottom: 0;
}

.site-footer {
  padding-block: 46px 30px;
  color: #d8dae1;
  background: var(--ink);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 50px;
}

.footer-brand {
  margin-bottom: 14px;
  color: var(--white);
}

.site-footer h3 {
  color: var(--white);
  font-size: 15px;
}

.footer-links {
  display: grid;
  gap: 7px;
}

.footer-links a:hover {
  color: var(--yellow);
}

.disclaimer {
  margin: 28px 0 0;
  padding-top: 22px;
  color: #aeb1bc;
  border-top: 1px solid #454750;
  font-size: 13px;
}

.subhero {
  padding-block: 82px 64px;
  background: var(--white);
  border-bottom: 3px solid var(--ink);
}

.subhero h1 {
  max-width: 900px;
  margin-bottom: 18px;
  font-size: clamp(38px, 6vw, 66px);
}

.subhero .hero-lead {
  margin-bottom: 0;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 26px;
  color: var(--muted);
  font-size: 14px;
}

.breadcrumb a {
  color: var(--teal-dark);
  font-weight: 800;
}

.step-list {
  display: grid;
  gap: 34px;
}

.step-card {
  display: grid;
  grid-template-columns: 1fr minmax(220px, 320px);
  gap: 48px;
  align-items: center;
  padding: 38px;
  background: var(--white);
  border: 3px solid var(--ink);
  border-radius: 6px;
}

.step-card:nth-child(even) .step-copy {
  order: 2;
}

.step-card:nth-child(even) .step-media {
  order: 1;
}

.step-tag {
  display: inline-block;
  margin-bottom: 12px;
  padding: 3px 10px;
  color: var(--white);
  background: var(--pink);
  border: 2px solid var(--ink);
  font-size: 13px;
  font-weight: 900;
}

.step-media img {
  display: block;
  width: 100%;
  max-width: 400px;
  margin-inline: auto;
  border: 3px solid var(--ink);
  border-radius: 5px;
}

.check-list,
.plain-list {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.check-list li,
.plain-list li {
  position: relative;
  margin-bottom: 10px;
  padding-left: 28px;
}

.check-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--teal-dark);
  font-weight: 950;
}

.plain-list li::before {
  content: "■";
  position: absolute;
  left: 2px;
  color: var(--pink);
  font-size: 10px;
}

.content-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
}

.content-block {
  padding: 30px;
  background: var(--white);
  border: 3px solid var(--ink);
  border-radius: 6px;
}

.content-block-wide {
  grid-column: 1 / -1;
}

.anchor-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.anchor-nav a {
  padding: 8px 13px;
  background: var(--white);
  border: 2px solid var(--ink);
  border-radius: 999px;
  font-size: 14px;
  font-weight: 800;
}

.section-dark .anchor-nav a {
  color: var(--ink);
}

.anchor-nav a:hover {
  background: var(--yellow);
}

.notice {
  margin-top: 22px;
  padding: 18px 20px;
  background: #fff4d9;
  border-left: 6px solid var(--yellow);
}

.image-dialog {
  width: min(92vw, 520px);
  padding: 16px;
  background: var(--paper);
  border: 3px solid var(--ink);
  border-radius: 6px;
}

.image-dialog::backdrop {
  background: rgba(23, 25, 35, 0.86);
}

.image-dialog img {
  display: block;
  max-width: 400px;
  max-height: 76vh;
  margin-inline: auto;
}

.dialog-close {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 40px;
  height: 40px;
  color: var(--white);
  background: var(--ink);
  border: 2px solid var(--white);
  border-radius: 50%;
  font-size: 24px;
  cursor: pointer;
}

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

  .main-nav {
    position: fixed;
    inset: 76px 0 auto;
    display: none;
    padding: 20px;
    background: var(--paper);
    border-bottom: 3px solid var(--ink);
  }

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

  .main-nav a {
    width: 100%;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 55px;
    text-align: center;
  }

  .hero-lead,
  .hero-actions,
  .hero-notes {
    margin-inline: auto;
    justify-content: center;
  }

  .stat-grid,
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
    row-gap: 52px;
  }

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

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

@media (max-width: 640px) {
  .container {
    width: min(calc(100% - 28px), var(--container));
  }

  .nav-wrap {
    min-height: 68px;
  }

  .main-nav {
    inset-block-start: 68px;
  }

  h1 {
    font-size: 42px;
  }

  h2 {
    font-size: 31px;
  }

  .hero-grid {
    min-height: auto;
    padding-block: 46px 56px;
  }

  .hero::after {
    display: none;
  }

  .hero-actions .button {
    width: 100%;
  }

  .stat-grid,
  .feature-grid,
  .route-grid,
  .content-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .stat-item {
    min-height: 88px;
    border-right: 0;
    border-bottom: 1px solid #454750;
  }

  .section {
    padding-block: 64px;
  }

  .gallery-grid {
    grid-template-columns: 1fr;
    max-width: 330px;
    margin-inline: auto;
  }

  .shot:nth-child(even) {
    transform: none;
  }

  .cta-layout {
    align-items: stretch;
    flex-direction: column;
  }

  .step-card {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 22px;
  }

  .step-card:nth-child(even) .step-copy,
  .step-card:nth-child(even) .step-media {
    order: initial;
  }

  .content-block-wide {
    grid-column: auto;
  }
}

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