:root {
  --ink: #123b4a;
  --ink-deep: #0a2832;
  --mint: #36c6a8;
  --mint-soft: #dff7f0;
  --sun: #f4c857;
  --coral: #fa625e;
  --paper: #f7faf9;
  --white: #ffffff;
  --text: #17313a;
  --muted: #66777d;
  --line: #d7e3e1;
  --shadow: 0 18px 45px rgba(10, 40, 50, 0.14);
  --content: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

body.menu-open {
  overflow: hidden;
}

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

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

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

button {
  font: inherit;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: 72px;
  border-bottom: 1px solid rgba(18, 59, 74, 0.1);
  background: rgba(247, 250, 249, 0.96);
  backdrop-filter: blur(14px);
}

.nav-wrap {
  width: min(calc(100% - 40px), var(--content));
  height: 100%;
  margin: 0 auto;
  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: 20px;
  font-weight: 800;
  color: var(--ink-deep);
}

.brand img {
  width: 42px;
  height: 42px;
  border-radius: 8px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-links > a:not(.download-button) {
  position: relative;
  padding: 21px 0 18px;
  color: #35515a;
  font-size: 15px;
  font-weight: 700;
}

.nav-links > a:not(.download-button)::after {
  position: absolute;
  right: 0;
  bottom: 13px;
  left: 0;
  height: 3px;
  background: var(--mint);
  content: "";
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.2s ease;
}

.nav-links > a:hover::after,
.nav-links > a.active::after {
  transform: scaleX(1);
}

.download-button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 11px 24px;
  border: 0;
  border-radius: 6px;
  color: var(--white);
  background: var(--coral);
  box-shadow: 0 10px 22px rgba(250, 98, 94, 0.24);
  font-size: 16px;
  font-weight: 800;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.download-button:hover {
  background: #e94e4a;
  box-shadow: 0 13px 28px rgba(250, 98, 94, 0.32);
  transform: translateY(-2px);
}

.download-button:focus-visible,
.menu-toggle:focus-visible,
.gallery-control:focus-visible,
summary:focus-visible,
a:focus-visible {
  outline: 3px solid var(--sun);
  outline-offset: 3px;
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--white);
  cursor: pointer;
}

.menu-toggle span,
.menu-toggle::before,
.menu-toggle::after {
  display: block;
  width: 20px;
  height: 2px;
  margin: 4px auto;
  background: var(--ink);
  content: "";
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.menu-open .menu-toggle span {
  opacity: 0;
}

.menu-open .menu-toggle::before {
  transform: translateY(6px) rotate(45deg);
}

.menu-open .menu-toggle::after {
  transform: translateY(-6px) rotate(-45deg);
}

.hero {
  position: relative;
  overflow: hidden;
  background: var(--ink-deep);
}

.hero::before,
.hero::after {
  position: absolute;
  content: "";
  pointer-events: none;
}

.hero::before {
  top: 0;
  right: 7%;
  width: 20%;
  height: 100%;
  border-right: 1px solid rgba(255, 255, 255, 0.08);
  border-left: 1px solid rgba(255, 255, 255, 0.08);
  transform: skewX(-12deg);
}

.hero::after {
  right: -8%;
  bottom: 14%;
  width: 50%;
  height: 3px;
  background: var(--sun);
  transform: rotate(-8deg);
}

.hero-inner {
  position: relative;
  z-index: 1;
  width: min(calc(100% - 40px), var(--content));
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 0.82fr);
  align-items: center;
  gap: 72px;
  padding: 54px 0 60px;
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--mint);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0;
}

.hero h1,
.page-hero h1 {
  margin: 0;
  color: var(--white);
  font-size: clamp(42px, 7vw, 76px);
  line-height: 1.12;
  letter-spacing: 0;
}

.hero-lead {
  max-width: 650px;
  margin: 24px 0 0;
  color: #d9e6e6;
  font-size: 19px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-top: 34px;
}

.hero-actions .download-button {
  min-width: 150px;
}

.text-link {
  color: var(--mint);
  font-weight: 800;
  border-bottom: 1px solid currentColor;
}

.app-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 18px 28px;
  margin: 32px 0 0;
  padding: 0;
  color: #aec2c5;
  list-style: none;
  font-size: 14px;
}

.app-facts strong {
  display: block;
  color: var(--white);
  font-size: 18px;
}

.hero-visual {
  position: relative;
  min-height: 570px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.phone {
  position: relative;
  width: min(100%, 316px);
  padding: 12px;
  border: 6px solid #183641;
  border-radius: 34px;
  background: #08191f;
  box-shadow: var(--shadow);
}

.phone::before {
  position: absolute;
  top: 7px;
  left: 50%;
  z-index: 2;
  width: 34%;
  height: 18px;
  border-radius: 0 0 13px 13px;
  background: #08191f;
  content: "";
  transform: translateX(-50%);
}

.phone img {
  width: 100%;
  max-width: 400px;
  height: auto;
  border-radius: 20px;
}

.hero-visual .phone {
  transform: rotate(2deg);
}

.status-note {
  position: absolute;
  right: 0;
  bottom: 16%;
  width: 170px;
  padding: 15px 18px;
  border-left: 5px solid var(--sun);
  color: var(--ink-deep);
  background: var(--white);
  box-shadow: var(--shadow);
  font-weight: 800;
}

.wind-mark {
  position: absolute;
  top: 14%;
  left: 2%;
  width: 104px;
  height: 104px;
  border: 2px solid var(--mint);
  border-radius: 50%;
}

.wind-mark::before,
.wind-mark::after {
  position: absolute;
  left: -24px;
  width: 82px;
  height: 2px;
  background: var(--mint);
  content: "";
}

.wind-mark::before {
  top: 35px;
}

.wind-mark::after {
  top: 56px;
  left: -42px;
}

.section {
  padding: 92px 0;
}

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

.section-mint {
  background: var(--mint-soft);
}

.container {
  width: min(calc(100% - 40px), var(--content));
  margin: 0 auto;
}

.section h2 {
  margin: 0 0 42px;
  color: var(--ink-deep);
  font-size: clamp(30px, 5vw, 48px);
  line-height: 1.22;
  letter-spacing: 0;
}

.section-dark h2 {
  color: var(--white);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.feature-item {
  min-height: 260px;
  padding: 30px 26px;
  border-top: 5px solid var(--mint);
  border-radius: 6px;
  background: var(--white);
  box-shadow: 0 12px 28px rgba(10, 40, 50, 0.07);
}

.feature-item:nth-child(2) {
  border-top-color: var(--sun);
}

.feature-item:nth-child(3) {
  border-top-color: var(--coral);
}

.feature-item:nth-child(4) {
  border-top-color: var(--ink);
}

.feature-symbol {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: var(--white);
  background: var(--ink);
  font-size: 18px;
  font-weight: 900;
}

.feature-item h3 {
  margin: 22px 0 10px;
  color: var(--ink-deep);
  font-size: 20px;
}

.feature-item p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}

.gallery-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 34px;
}

.gallery-head h2 {
  margin-bottom: 0;
}

.gallery-controls {
  display: flex;
  gap: 10px;
}

.gallery-control {
  width: 46px;
  height: 46px;
  border: 1px solid #4e727d;
  border-radius: 50%;
  color: var(--white);
  background: transparent;
  cursor: pointer;
  font-size: 22px;
}

.gallery-track {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(245px, 292px);
  gap: 28px;
  overflow-x: auto;
  padding: 10px 4px 30px;
  scroll-behavior: smooth;
  scrollbar-color: var(--mint) #274e5b;
  scrollbar-width: thin;
  scroll-snap-type: x mandatory;
}

.screen-shot {
  scroll-snap-align: start;
}

.screen-shot .phone {
  width: 100%;
  padding: 9px;
  border-width: 5px;
}

.screen-shot figcaption {
  margin-top: 16px;
  color: #c8d8da;
  font-size: 14px;
}

.screen-shot strong {
  display: block;
  color: var(--white);
  font-size: 17px;
}

.path-grid {
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: 18px;
}

.path-link {
  min-height: 310px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 38px;
  border-radius: 6px;
  color: var(--white);
  background: var(--ink-deep);
  transition: transform 0.2s ease;
}

.path-link:nth-child(2) {
  color: var(--ink-deep);
  background: var(--sun);
}

.path-link:hover {
  transform: translateY(-4px);
}

.path-kicker {
  font-size: 14px;
  font-weight: 800;
}

.path-link h3 {
  max-width: 430px;
  margin: 34px 0 0;
  font-size: clamp(25px, 4vw, 38px);
  line-height: 1.25;
}

.path-link span:last-child {
  align-self: flex-end;
  font-weight: 900;
}

.review-layout {
  display: grid;
  grid-template-columns: 0.78fr 1.22fr;
  gap: 54px;
  align-items: start;
}

.rating-block {
  padding: 36px;
  border-left: 7px solid var(--coral);
  background: var(--white);
}

.rating-number {
  display: block;
  color: var(--ink-deep);
  font-size: 68px;
  font-weight: 900;
  line-height: 1;
}

.rating-stars {
  margin-top: 12px;
  color: #d99600;
  letter-spacing: 2px;
}

.rating-block small {
  color: var(--muted);
}

.review-note {
  margin: 10px 0 14px;
  color: var(--muted);
  font-size: 12px;
}

.review-list {
  display: grid;
  gap: 14px;
}

.review-list blockquote {
  margin: 0;
  padding: 24px 26px;
  border-left: 3px solid var(--mint);
  background: var(--white);
}

.review-list p {
  margin: 0 0 12px;
}

.review-list cite {
  color: var(--muted);
  font-size: 14px;
  font-style: normal;
}

.review-list time {
  display: block;
  margin-top: 8px;
  color: var(--muted);
  font-size: 12px;
}

.download-band {
  padding: 58px 0;
  color: var(--white);
  background: var(--coral);
}

.download-band .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 36px;
}

.download-band h2 {
  margin: 0;
  color: var(--white);
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.25;
}

.download-band p {
  margin: 8px 0 0;
  color: #fff2f0;
}

.download-band .download-button {
  flex: 0 0 auto;
  color: var(--ink-deep);
  background: var(--sun);
  box-shadow: none;
}

.site-footer {
  padding: 52px 0 28px;
  color: #bdd0d2;
  background: #071f27;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 1fr;
  gap: 60px;
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--white);
  font-size: 20px;
  font-weight: 800;
}

.footer-brand img {
  width: 44px;
  height: 44px;
  border-radius: 8px;
}

.footer-tagline {
  max-width: 25em;
  margin: 12px 0 0;
  color: #bdd0d2;
  font-size: 14px;
  line-height: 1.7;
}

.site-footer h3 {
  margin: 0 0 18px;
  color: var(--white);
  font-size: 16px;
}

.footer-links {
  display: grid;
  gap: 9px;
}

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

.disclaimer {
  margin: 0;
  font-size: 13px;
}

.copyright {
  margin: 34px 0 0;
  padding-top: 22px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 13px;
}

.page-hero {
  padding: 76px 0 66px;
  color: var(--white);
  background: var(--ink-deep);
}

.page-hero .container {
  display: grid;
  grid-template-columns: 1fr 0.62fr;
  align-items: end;
  gap: 50px;
}

.page-hero h1 {
  font-size: clamp(38px, 6vw, 64px);
}

.page-hero p {
  margin: 0;
  padding-left: 24px;
  border-left: 4px solid var(--mint);
  color: #c8d8da;
}

.article-wrap {
  width: min(calc(100% - 40px), 1040px);
  margin: 0 auto;
}

.content-section {
  padding: 72px 0;
  border-bottom: 1px solid var(--line);
}

.content-section:last-child {
  border-bottom: 0;
}

.content-section h2 {
  margin: 0 0 28px;
  color: var(--ink-deep);
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1.3;
}

.content-section h3 {
  margin: 28px 0 10px;
  color: var(--ink-deep);
  font-size: 21px;
}

.content-section p {
  margin: 0 0 18px;
}

.content-section a:not(.download-button) {
  color: #087f6c;
  font-weight: 800;
  border-bottom: 1px solid currentColor;
}

.step-list {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: steps;
}

.step-item {
  display: grid;
  grid-template-columns: 84px minmax(0, 1fr) 230px;
  align-items: center;
  gap: 30px;
  padding: 34px 0;
  border-top: 1px solid var(--line);
  counter-increment: steps;
}

.step-item::before {
  width: 62px;
  height: 62px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: var(--white);
  background: var(--ink);
  content: counter(steps, decimal-leading-zero);
  font-size: 20px;
  font-weight: 900;
}

.step-item h3 {
  margin-top: 0;
}

.step-item .phone {
  width: 210px;
  justify-self: end;
}

.check-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  padding: 16px 18px 16px 48px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--white);
  position: relative;
}

.check-list li::before {
  position: absolute;
  top: 18px;
  left: 18px;
  width: 20px;
  height: 20px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: var(--white);
  background: var(--mint);
  content: "✓";
  font-size: 12px;
  font-weight: 900;
}

.tip-box {
  margin-top: 28px;
  padding: 22px 24px;
  border-left: 5px solid var(--sun);
  background: #fff8dd;
}

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

.feature-detail {
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--white);
}

.feature-detail h3 {
  margin: 0 0 12px;
}

.feature-detail p:last-child {
  margin-bottom: 0;
}

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

.faq-item {
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--white);
}

.faq-item summary {
  position: relative;
  padding: 19px 54px 19px 22px;
  color: var(--ink-deep);
  cursor: pointer;
  font-weight: 800;
  list-style: none;
}

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

.faq-item summary::after {
  position: absolute;
  top: 50%;
  right: 20px;
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: var(--white);
  background: var(--ink);
  content: "+";
  transform: translateY(-50%);
}

.faq-item[open] summary::after {
  content: "−";
  background: var(--coral);
}

.faq-answer {
  padding: 0 22px 20px;
  color: var(--muted);
}

.faq-answer p {
  margin: 0;
}

.related-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.related-links a {
  padding: 12px 16px;
  border: 1px solid var(--ink);
  border-radius: 6px;
  color: var(--ink-deep);
  background: var(--white);
  font-weight: 800;
}

.related-links a:hover {
  color: var(--white);
  background: var(--ink);
}

@media (max-width: 980px) {
  .feature-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hero-inner {
    grid-template-columns: 1fr 0.7fr;
    gap: 38px;
  }

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

  .status-note,
  .wind-mark {
    display: none;
  }

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

  .footer-grid > div:first-child {
    grid-column: 1 / -1;
  }

  .step-item {
    grid-template-columns: 70px minmax(0, 1fr);
  }

  .step-item .phone {
    display: none;
  }
}

@media (max-width: 760px) {
  .site-header {
    height: 64px;
  }

  .nav-wrap {
    width: min(calc(100% - 28px), var(--content));
  }

  .brand {
    font-size: 18px;
  }

  .brand img {
    width: 38px;
    height: 38px;
  }

  .menu-toggle {
    display: block;
  }

  .nav-links {
    position: fixed;
    top: 64px;
    right: 0;
    left: 0;
    height: calc(100svh - 64px);
    display: none;
    align-content: start;
    align-items: stretch;
    gap: 0;
    padding: 24px;
    background: var(--paper);
  }

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

  .nav-links > a:not(.download-button) {
    padding: 16px 6px;
    border-bottom: 1px solid var(--line);
  }

  .nav-links > a:not(.download-button)::after {
    display: none;
  }

  .nav-links .download-button {
    margin-top: 22px;
  }

  .hero,
  .hero-inner {
    min-height: auto;
  }

  .hero-inner {
    grid-template-columns: 1fr;
    gap: 26px;
    padding: 64px 0 44px;
  }

  .hero h1,
  .page-hero h1 {
    font-size: 44px;
  }

  .hero-lead {
    font-size: 17px;
  }

  .hero-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .hero-actions .text-link {
    align-self: flex-start;
  }

  .hero-visual {
    min-height: 410px;
  }

  .hero-visual .phone {
    width: 230px;
  }

  .section {
    padding: 70px 0;
  }

  .feature-grid,
  .path-grid,
  .review-layout,
  .feature-detail-grid,
  .check-list,
  .footer-grid,
  .page-hero .container {
    grid-template-columns: 1fr;
  }

  .feature-item {
    min-height: auto;
  }

  .gallery-head {
    align-items: start;
    flex-direction: column;
  }

  .gallery-track {
    grid-auto-columns: minmax(230px, 76vw);
  }

  .path-link {
    min-height: 260px;
    padding: 30px;
  }

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

  .footer-grid > div:first-child {
    grid-column: auto;
  }

  .page-hero {
    padding: 56px 0 48px;
  }

  .page-hero .container {
    align-items: start;
  }

  .page-hero p {
    padding-left: 18px;
  }

  .step-item {
    grid-template-columns: 54px minmax(0, 1fr);
    gap: 16px;
  }

  .step-item::before {
    width: 48px;
    height: 48px;
    font-size: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}