:root {
  --bg: #091024;
  --bg-2: #111a39;
  --panel: rgba(12, 18, 41, 0.88);
  --panel-strong: #101936;
  --card: rgba(20, 30, 63, 0.92);
  --card-soft: rgba(255, 248, 236, 0.08);
  --line: rgba(255, 255, 255, 0.12);
  --text: #f7f2ea;
  --muted: #bec8ea;
  --accent: #ff8a4c;
  --accent-2: #ff6a88;
  --accent-3: #7a6cff;
  --accent-4: #ffe9a8;
  --ok: #72e2b5;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.38);
  --radius-xl: 32px;
  --radius-lg: 24px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --container: 1180px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 15% 15%, rgba(255, 138, 76, 0.16), transparent 24%),
    radial-gradient(circle at 85% 10%, rgba(122, 108, 255, 0.20), transparent 22%),
    radial-gradient(circle at 80% 80%, rgba(255, 106, 136, 0.12), transparent 25%),
    linear-gradient(180deg, #071022 0%, var(--bg) 55%, #050a17 100%);
  font-family: "Noto Sans SC", "Microsoft YaHei UI", "PingFang SC", "Hiragino Sans GB", sans-serif;
  line-height: 1.65;
  letter-spacing: 0.01em;
  min-height: 100vh;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    radial-gradient(rgba(255, 255, 255, 0.06) 1px, transparent 1px),
    radial-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-position: 0 0, 12px 12px;
  background-size: 24px 24px, 24px 24px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.72), transparent 92%);
  opacity: 0.3;
  z-index: -1;
}

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

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

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

.skip-link {
  position: absolute;
  left: -9999px;
  top: 12px;
  z-index: 9999;
  padding: 10px 14px;
  border-radius: 999px;
  background: #fff;
  color: #0d1330;
}

.skip-link:focus {
  left: 12px;
}

.site-shell {
  width: min(100%, var(--container));
  margin: 0 auto;
  padding: 18px 20px 40px;
}

.site-header {
  position: sticky;
  top: 14px;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 18px;
  margin-bottom: 20px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 24px;
  background: rgba(8, 13, 30, 0.72);
  backdrop-filter: blur(18px);
  box-shadow: var(--shadow);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand-logo {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  overflow: hidden;
  flex: 0 0 auto;
  box-shadow: 0 10px 24px rgba(255, 106, 136, 0.28);
}

.brand-logo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.brand-copy {
  min-width: 0;
}

.brand-copy strong {
  display: block;
  font-size: 1rem;
  line-height: 1.2;
  letter-spacing: 0.06em;
}

.brand-copy span {
  display: block;
  margin-top: 2px;
  color: var(--muted);
  font-size: 0.82rem;
}

.nav {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav a {
  color: var(--muted);
  font-size: 0.94rem;
  transition: color 0.2s ease, transform 0.2s ease;
}

.nav a:hover,
.nav a:focus-visible {
  color: #fff;
  transform: translateY(-1px);
}

.menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
}

.menu-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background: currentColor;
  position: relative;
}

.menu-toggle span::before,
.menu-toggle span::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background: currentColor;
}

.menu-toggle span::before {
  top: -6px;
}

.menu-toggle span::after {
  top: 6px;
}

.nav-shell {
  display: flex;
  align-items: center;
  gap: 16px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 0 20px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 700;
  letter-spacing: 0.03em;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  white-space: nowrap;
}

.btn:hover,
.btn:focus-visible {
  transform: translateY(-2px);
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-2), var(--accent));
  color: #fff;
  box-shadow: 0 16px 32px rgba(255, 106, 136, 0.25);
}

.btn-secondary {
  border-color: rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
}

.btn-ghost {
  border-color: rgba(255, 255, 255, 0.08);
  background: transparent;
  color: var(--text);
}

.hero,
.panel,
.section-card {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-xl);
  background: linear-gradient(180deg, rgba(16, 25, 54, 0.94), rgba(10, 15, 34, 0.92));
  box-shadow: var(--shadow);
}

.hero {
  padding: 30px;
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: 28px;
  align-items: center;
}

.hero::after,
.panel::after,
.section-card::after {
  content: "";
  position: absolute;
  inset: auto -10% -48% auto;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 138, 76, 0.22), transparent 68%);
  pointer-events: none;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  color: #ffd8cb;
  font-size: 0.86rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.hero h1,
.page-hero h1 {
  margin: 16px 0 14px;
  font-size: clamp(2.2rem, 4vw, 4.2rem);
  line-height: 1.08;
  letter-spacing: 0.02em;
}

.hero p,
.page-hero p {
  margin: 0;
  color: var(--muted);
  font-size: 1.03rem;
  max-width: 60ch;
}

.hero-actions,
.section-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.hero-meta {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-top: 24px;
}

.meta-card {
  padding: 16px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.meta-card strong {
  display: block;
  font-size: 1.1rem;
}

.meta-card span {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 0.88rem;
}

.hero-visual {
  display: grid;
  gap: 14px;
}

.visual-stack {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.screen-card {
  position: relative;
  border-radius: 28px;
  padding: 14px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.04)),
    rgba(8, 12, 29, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.32);
}

.screen-card img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.screen-card.small {
  transform: translateX(22px) rotate(1.4deg);
}

.screen-card.small-alt {
  transform: translateX(-8px) rotate(-1deg);
}

.screen-badge {
  position: absolute;
  left: 24px;
  bottom: 24px;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(4, 8, 20, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.84rem;
  color: #fff4ee;
}

.section {
  margin-top: 22px;
}

.section-card {
  padding: 28px;
}

.section-header {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 18px;
}

.section-title {
  margin: 0;
  font-size: clamp(1.45rem, 2.5vw, 2.2rem);
  line-height: 1.12;
}

.section-subtitle {
  margin: 8px 0 0;
  color: var(--muted);
  max-width: 62ch;
}

.pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: #f5eedd;
  font-size: 0.88rem;
}

.grid-2,
.grid-3,
.grid-4 {
  display: grid;
  gap: 14px;
}

.grid-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.card {
  padding: 18px;
  border-radius: var(--radius-lg);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.03)),
    var(--card);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.card h3,
.card h4 {
  margin: 12px 0 8px;
  line-height: 1.25;
}

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

.icon-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(255, 106, 136, 0.18), rgba(122, 108, 255, 0.20));
  color: #fff;
  font-weight: 800;
  font-size: 0.98rem;
}

.feature-card {
  min-height: 180px;
}

.feature-card h3 {
  font-size: 1.05rem;
}

.feature-card p {
  margin-top: 10px;
  font-size: 0.96rem;
}

.shot-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.shot {
  padding: 14px;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.shot figure {
  margin: 0;
}

.shot img {
  width: 100%;
  border-radius: 18px;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.shot figcaption {
  margin-top: 10px;
  color: var(--muted);
  font-size: 0.92rem;
}

.split-panel {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.highlight-box {
  padding: 22px;
  border-radius: 24px;
  background: linear-gradient(180deg, rgba(255, 138, 76, 0.14), rgba(122, 108, 255, 0.12));
  border: 1px solid rgba(255, 255, 255, 0.08);
}

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

.highlight-box ul {
  margin: 14px 0 0;
  padding-left: 18px;
}

.note {
  padding: 14px 16px;
  border-radius: 18px;
  background: rgba(255, 233, 168, 0.08);
  border: 1px solid rgba(255, 233, 168, 0.18);
  color: #fff6da;
  font-size: 0.95rem;
}

.review-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.quote {
  position: relative;
  padding: 22px;
  border-radius: 24px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.03));
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.quote::before {
  content: "“";
  position: absolute;
  top: -8px;
  left: 14px;
  color: rgba(255, 255, 255, 0.14);
  font-size: 4.5rem;
  line-height: 1;
}

.quote p {
  position: relative;
  margin: 18px 0 12px;
  color: #f7f1e6;
}

.quote footer {
  color: var(--muted);
  font-size: 0.9rem;
}

.review-example {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px 12px;
  margin-top: 6px;
  font-size: 0.82rem;
}

.review-stars {
  color: #ffc94d;
  letter-spacing: 0;
  white-space: nowrap;
}

.page-hero {
  padding: 28px;
  display: grid;
  gap: 14px;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  color: var(--muted);
  font-size: 0.9rem;
}

.breadcrumb a {
  color: #fff;
}

.article {
  padding: 24px 28px;
}

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

.article h2,
.article h3 {
  color: var(--text);
  line-height: 1.25;
}

.article h2 {
  margin-top: 30px;
}

.step-list {
  display: grid;
  gap: 14px;
  margin-top: 16px;
}

.step {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 16px;
  align-items: start;
  padding: 18px;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  border-radius: 20px;
  background: linear-gradient(135deg, rgba(255, 106, 136, 0.9), rgba(255, 138, 76, 0.95));
  color: #fff;
  font-size: 1.4rem;
  font-weight: 800;
  box-shadow: 0 16px 28px rgba(255, 106, 136, 0.18);
}

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

.step p {
  margin: 0;
}

.callout {
  padding: 18px;
  border-radius: 22px;
  background: linear-gradient(135deg, rgba(255, 138, 76, 0.16), rgba(122, 108, 255, 0.14));
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.toc {
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.toc a {
  padding: 12px 14px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: #f7f1e6;
}

.faq-list {
  display: grid;
  gap: 12px;
  margin-top: 16px;
}

.faq-item {
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  overflow: hidden;
}

.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: 18px 20px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

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

.faq-item summary::after {
  content: "+";
  width: 28px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.07);
  color: #fff;
  flex: 0 0 auto;
}

.faq-item[open] summary::after {
  content: "–";
}

.faq-item .answer {
  padding: 0 20px 18px;
  color: var(--muted);
}

.inline-link {
  color: #ffe0d3;
  border-bottom: 1px solid rgba(255, 224, 211, 0.45);
}

.footer {
  margin-top: 22px;
  padding: 24px 28px 18px;
  border-radius: 28px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(8, 13, 30, 0.82);
  box-shadow: var(--shadow);
}

.footer-top {
  display: grid;
  gap: 14px;
  grid-template-columns: 1.4fr 0.8fr 0.8fr;
  align-items: start;
}

.footer-top p,
.footer-top li,
.footer-bottom {
  color: var(--muted);
}

.footer-links {
  display: grid;
  gap: 10px;
}

.footer-links a {
  color: #fff;
}

.footer-bottom {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.92rem;
}

.download-strip {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 22px 24px;
  border-radius: 24px;
  background: linear-gradient(135deg, rgba(255, 106, 136, 0.14), rgba(122, 108, 255, 0.16));
  border: 1px solid rgba(255, 255, 255, 0.08);
}

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

.muted {
  color: var(--muted);
}

.center {
  text-align: center;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

@media (max-width: 1024px) {
  .hero,
  .split-panel,
  .footer-top {
    grid-template-columns: 1fr;
  }

  .grid-4,
  .review-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hero-meta {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 820px) {
  .site-shell {
    padding-inline: 14px;
  }

  .site-header {
    flex-wrap: wrap;
    padding: 12px 14px;
  }

  .nav-shell {
    width: 100%;
    justify-content: space-between;
  }

  .nav {
    width: 100%;
    display: none;
    padding-top: 10px;
    justify-content: flex-start;
  }

  .nav.is-open {
    display: flex;
  }

  .menu-toggle {
    display: inline-flex;
  }

  .hero,
  .section-card,
  .article,
  .footer,
  .page-hero {
    padding: 20px;
  }

  .shot-grid,
  .grid-3,
  .grid-4,
  .review-grid,
  .toc,
  .grid-2 {
    grid-template-columns: 1fr;
  }

  .hero-meta {
    grid-template-columns: 1fr;
  }

  .screen-card.small,
  .screen-card.small-alt {
    transform: none;
  }

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

@media (max-width: 520px) {
  .hero h1,
  .page-hero h1 {
    font-size: clamp(1.95rem, 9vw, 2.7rem);
  }

  .hero-actions,
  .section-actions,
  .download-strip {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    width: 100%;
  }

  .brand-copy span {
    font-size: 0.76rem;
  }

  .meta-card,
  .card,
  .quote,
  .shot,
  .highlight-box,
  .faq-item summary,
  .faq-item .answer {
    padding-left: 16px;
    padding-right: 16px;
  }
}