:root {
  --ink: #20233a;
  --muted: #656b80;
  --paper: #f6f7fb;
  --white: #ffffff;
  --night: #171a31;
  --violet: #6858e8;
  --violet-dark: #4c3fd0;
  --gold: #f2bd3f;
  --coral: #ef6176;
  --teal: #20a79a;
  --line: #e1e4ec;
  --shadow: 0 18px 45px rgba(32, 35, 58, 0.12);
  --radius: 8px;
}

* {
  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.nav-open {
  overflow: hidden;
}

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

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

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

.container {
  width: min(1120px, calc(100% - 40px));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: 72px;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
}

.nav-wrap {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
  font-size: 20px;
  font-weight: 800;
}

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

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

.site-nav > a:not(.button) {
  position: relative;
  color: #464a5f;
  font-size: 15px;
  font-weight: 700;
}

.site-nav > a[aria-current="page"]::after,
.site-nav > a:not(.button):hover::after {
  position: absolute;
  right: 0;
  bottom: -9px;
  left: 0;
  height: 3px;
  background: var(--violet);
  border-radius: 2px;
  content: "";
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  padding: 0;
  color: var(--ink);
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 25px;
  line-height: 1;
  cursor: pointer;
}

.button {
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 0 22px;
  color: var(--white);
  background: var(--violet);
  border: 1px solid var(--violet);
  border-radius: 7px;
  box-shadow: 0 8px 20px rgba(104, 88, 232, 0.2);
  font-size: 15px;
  font-weight: 800;
  cursor: pointer;
  transition: transform 180ms ease, background 180ms ease;
}

.button:hover {
  background: var(--violet-dark);
  transform: translateY(-2px);
}

.button-light {
  color: var(--ink);
  background: var(--white);
  border-color: var(--white);
  box-shadow: none;
}

.button-light:hover {
  color: var(--white);
  background: var(--coral);
  border-color: var(--coral);
}

.hero {
  position: relative;
  min-height: min(720px, calc(100svh - 112px));
  overflow: hidden;
  color: var(--white);
  background: var(--night);
}

.hero::before {
  position: absolute;
  top: 52px;
  left: 9%;
  width: 3px;
  height: 3px;
  background: var(--white);
  border-radius: 50%;
  box-shadow: 80px 92px #f2bd3f, 185px 9px #fff, 290px 130px #ef6176, 400px 45px #fff, 515px 115px #20a79a, 650px 15px #fff, 760px 142px #f2bd3f, 890px 48px #fff, 1020px 116px #6858e8;
  content: "";
  opacity: 0.75;
}

.hero-copy {
  position: relative;
  z-index: 2;
  max-width: 780px;
  margin-inline: auto;
  padding: 70px 0 330px;
  text-align: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
  color: var(--gold);
  font-size: 14px;
  font-weight: 800;
}

.eyebrow::before {
  width: 28px;
  height: 2px;
  background: currentColor;
  content: "";
}

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

.hero h1 {
  margin-bottom: 18px;
  font-size: clamp(38px, 7vw, 68px);
  letter-spacing: 0;
}

.hero-copy > p {
  max-width: 720px;
  margin: 0 auto 28px;
  color: #dfe1ef;
  font-size: 18px;
}

.hero-actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-proof {
  display: flex;
  justify-content: center;
  gap: 28px;
  margin-top: 24px;
  color: #c5c8da;
  font-size: 13px;
}

.hero-phones {
  position: absolute;
  top: 420px;
  right: 0;
  left: 0;
  z-index: 1;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 26px;
  pointer-events: none;
}

.hero-phones img {
  width: 170px;
  max-width: 29vw;
  height: auto;
  border: 5px solid #323650;
  border-radius: 26px;
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.38);
}

.hero-phones img:nth-child(2) {
  margin-top: 12px;
}

.hero-phones img:nth-child(3) {
  margin-top: 0;
}

.section {
  padding: 86px 0;
}

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

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

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

.section-head h2,
.center-title h2 {
  margin-bottom: 0;
  font-size: clamp(28px, 4vw, 42px);
}

.section-head a {
  color: var(--violet);
  font-weight: 800;
}

.center-title {
  margin-bottom: 38px;
  text-align: center;
}

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

.feature-card,
.path-card,
.review-card {
  border-radius: var(--radius);
}

.feature-card {
  min-height: 230px;
  padding: 28px 24px;
  background: var(--white);
  border: 1px solid var(--line);
}

.feature-card:nth-child(2) {
  border-top: 4px solid var(--gold);
}

.feature-card:nth-child(3) {
  border-top: 4px solid var(--coral);
}

.feature-card:nth-child(4) {
  border-top: 4px solid var(--teal);
}

.feature-card:first-child {
  border-top: 4px solid var(--violet);
}

.feature-icon {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  margin-bottom: 20px;
  color: var(--white);
  background: var(--ink);
  border-radius: 8px;
  font-size: 20px;
  font-weight: 900;
}

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

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

.shot-controls {
  display: flex;
  gap: 8px;
}

.icon-button {
  width: 42px;
  height: 42px;
  padding: 0;
  color: var(--ink);
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 22px;
  cursor: pointer;
}

.screenshot-track {
  display: grid;
  grid-auto-columns: minmax(250px, 330px);
  grid-auto-flow: column;
  gap: 22px;
  overflow-x: auto;
  padding: 6px 4px 24px;
  scroll-behavior: smooth;
  scrollbar-color: var(--violet) var(--line);
  scroll-snap-type: x mandatory;
}

.screenshot-item {
  scroll-snap-align: start;
}

.screenshot-item img {
  width: 100%;
  max-width: 390px;
  height: auto;
  border: 5px solid #2d3044;
  border-radius: 24px;
  box-shadow: var(--shadow);
}

.screenshot-item figcaption {
  padding: 14px 4px 0;
  color: var(--muted);
  font-size: 14px;
}

.path-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}

.path-card {
  position: relative;
  min-height: 260px;
  padding: 34px;
  overflow: hidden;
  color: var(--white);
  background: var(--violet);
}

.path-card:nth-child(2) {
  color: var(--ink);
  background: var(--gold);
}

.path-card .number {
  position: absolute;
  right: 24px;
  bottom: -34px;
  color: rgba(255, 255, 255, 0.2);
  font-size: 130px;
  font-weight: 900;
  line-height: 1;
}

.path-card:nth-child(2) .number {
  color: rgba(32, 35, 58, 0.12);
}

.path-card h3 {
  max-width: 410px;
  margin-bottom: 16px;
  font-size: 28px;
}

.path-card p {
  max-width: 440px;
  margin-bottom: 28px;
}

.text-link {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 900;
}

.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  margin-bottom: 34px;
  background: #373a54;
  border: 1px solid #373a54;
}

.stat {
  padding: 28px 20px;
  background: var(--night);
  text-align: center;
}

.stat strong {
  display: block;
  color: var(--gold);
  font-size: 30px;
}

.stat span {
  color: #c7cada;
  font-size: 14px;
}

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

.review-card {
  padding: 26px;
  background: #242840;
}

.review-card blockquote {
  margin: 0 0 18px;
  color: #eceefa;
}

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

.faq-list {
  max-width: 900px;
  margin-inline: auto;
  border-top: 1px solid var(--line);
}

.faq-item {
  border-bottom: 1px solid var(--line);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 22px 0;
  color: var(--ink);
  background: transparent;
  border: 0;
  font: inherit;
  font-weight: 800;
  text-align: left;
  cursor: pointer;
}

.faq-question span:last-child {
  flex: 0 0 auto;
  color: var(--violet);
  font-size: 24px;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  color: var(--muted);
  transition: max-height 220ms ease;
}

.faq-answer > div {
  padding: 0 0 24px;
}

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

.download-band .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
}

.download-band h2 {
  margin-bottom: 8px;
  font-size: clamp(27px, 4vw, 40px);
}

.download-band p,
.download-band .band-note {
  margin: 0;
  color: #fff3f5;
}

.site-footer {
  padding: 42px 0 28px;
  color: #bfc3d3;
  background: #111426;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 50px;
}

.footer-brand {
  color: var(--white);
}

.footer-grid h3 {
  margin-bottom: 14px;
  color: var(--white);
  font-size: 16px;
}

.footer-links {
  display: grid;
  gap: 8px;
}

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

.disclaimer {
  margin-top: 28px;
  padding-top: 22px;
  border-top: 1px solid #2d3044;
  font-size: 13px;
}

.copyright {
  margin-top: 8px;
  font-size: 13px;
}

.page-hero {
  position: relative;
  overflow: hidden;
  padding: 88px 0 74px;
  color: var(--white);
  background: var(--night);
}

.page-hero::after {
  position: absolute;
  top: -45px;
  right: 8%;
  width: 190px;
  height: 190px;
  border: 28px solid var(--violet);
  border-radius: 50%;
  content: "";
  opacity: 0.35;
}

.page-hero .container {
  position: relative;
  z-index: 1;
}

.page-hero h1 {
  max-width: 820px;
  margin-bottom: 20px;
  font-size: clamp(36px, 6vw, 60px);
}

.page-hero p {
  max-width: 760px;
  margin: 0;
  color: #d9dceb;
  font-size: 18px;
}

.breadcrumb {
  margin-bottom: 22px;
  color: var(--gold);
  font-size: 14px;
  font-weight: 800;
}

.content-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 50px;
  align-items: start;
}

.article h2 {
  margin: 48px 0 24px;
  padding-left: 16px;
  border-left: 5px solid var(--violet);
  font-size: 30px;
}

.article h2:first-child {
  margin-top: 0;
}

.article h3 {
  margin: 28px 0 10px;
  font-size: 21px;
}

.article p {
  margin: 0 0 16px;
  color: #4e5369;
}

.article ul,
.article ol {
  margin: 0 0 18px;
  padding-left: 22px;
  color: #4e5369;
}

.steps {
  counter-reset: steps;
  display: grid;
  gap: 20px;
}

.step {
  position: relative;
  padding: 28px 28px 28px 78px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  counter-increment: steps;
}

.step::before {
  position: absolute;
  top: 26px;
  left: 24px;
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  color: var(--white);
  background: var(--violet);
  border-radius: 50%;
  content: counter(steps);
  font-weight: 900;
}

.step h3 {
  margin: 0 0 8px;
}

.step p {
  margin: 0;
}

.notice {
  margin: 24px 0;
  padding: 20px 22px;
  color: #5f4a09;
  background: #fff5d8;
  border-left: 5px solid var(--gold);
  border-radius: 4px;
}

.mini-shot {
  width: min(100%, 310px);
  max-width: 400px;
  margin: 24px auto;
  border: 4px solid #292d43;
  border-radius: 20px;
  box-shadow: var(--shadow);
}

.side-nav {
  position: sticky;
  top: 100px;
  padding: 24px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.side-nav strong {
  display: block;
  margin-bottom: 14px;
}

.side-nav a {
  display: block;
  padding: 9px 0;
  color: var(--muted);
  border-bottom: 1px solid var(--line);
  font-size: 14px;
}

.side-nav a:hover {
  color: var(--violet);
}

.fact-table {
  width: 100%;
  border-collapse: collapse;
  margin: 22px 0;
  background: var(--white);
}

.fact-table th,
.fact-table td {
  padding: 14px 16px;
  border: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.fact-table th {
  width: 26%;
  background: #f0efff;
}

.feature-detail {
  margin-bottom: 18px;
  padding: 25px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.feature-detail h3 {
  margin-top: 0;
}

@media (max-width: 900px) {
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .content-layout {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 760px) {
  .container {
    width: min(100% - 28px, 1120px);
  }

  .site-header {
    height: 64px;
  }

  .nav-toggle {
    display: grid;
    place-items: center;
  }

  .site-nav {
    position: fixed;
    top: 64px;
    right: 0;
    bottom: 0;
    left: 0;
    display: none;
    align-content: start;
    padding: 28px;
    background: var(--white);
  }

  .site-nav.open {
    display: grid;
  }

  .site-nav > a:not(.button) {
    padding: 13px 0;
    border-bottom: 1px solid var(--line);
    font-size: 18px;
  }

  .site-nav > a[aria-current="page"]::after,
  .site-nav > a:not(.button):hover::after {
    display: none;
  }

  .site-nav .button {
    margin-top: 10px;
  }

  .hero {
    min-height: calc(100svh - 104px);
  }

  .hero-copy {
    padding: 54px 0 280px;
  }

  .hero-copy > p {
    font-size: 16px;
  }

  .hero-proof {
    gap: 12px;
    font-size: 12px;
  }

  .hero-phones {
    top: 520px;
    gap: 10px;
  }

  .hero-phones img {
    width: 205px;
    max-width: 58vw;
  }

  .hero-phones img:first-child {
    display: none;
  }

  .hero-phones img:nth-child(2) {
    margin-top: 0;
  }

  .hero-phones img:nth-child(3) {
    width: 180px;
    margin-top: 48px;
  }

  .section {
    padding: 64px 0;
  }

  .feature-grid,
  .path-grid,
  .stats-row,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .section-head {
    align-items: center;
  }

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

  .footer-grid {
    gap: 28px;
  }

  .page-hero {
    padding: 64px 0 56px;
  }

  .step {
    padding: 72px 22px 22px;
  }

  .step::before {
    top: 20px;
    left: 22px;
  }

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

  .fact-table tr {
    margin-bottom: 12px;
  }
}

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

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
  }
}