:root {
  --bg: #0f1020;
  --bg-soft: #171831;
  --card: rgba(19, 23, 45, 0.82);
  --card-strong: #1d2140;
  --text: #f5efe7;
  --muted: #c7c3d8;
  --line: rgba(255, 255, 255, 0.12);
  --accent: #ff7a59;
  --accent-2: #8c6cff;
  --accent-3: #2fd7c4;
  --accent-4: #f5c14b;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.3);
  --radius-xl: 28px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --content-max: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background:
    radial-gradient(circle at 20% 10%, rgba(140, 108, 255, 0.26), transparent 30%),
    radial-gradient(circle at 80% 0%, rgba(255, 122, 89, 0.24), transparent 24%),
    radial-gradient(circle at 70% 35%, rgba(47, 215, 196, 0.14), transparent 28%),
    linear-gradient(180deg, #0a0c18 0%, #11132a 100%);
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.28;
  background-image:
    radial-gradient(rgba(255, 255, 255, 0.08) 1px, transparent 1px);
  background-size: 16px 16px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.75), transparent 80%);
}

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

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

.site-wrap {
  position: relative;
  width: min(100%, var(--content-max));
  margin: 0 auto;
  padding: 0 20px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(18px);
  background: linear-gradient(180deg, rgba(10, 12, 24, 0.92), rgba(10, 12, 24, 0.72));
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 76px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.brand img {
  width: 42px;
  height: 42px;
  flex: 0 0 auto;
  border-radius: 12px;
  box-shadow: 0 10px 24px rgba(255, 122, 89, 0.22);
}

.brand-mark {
  display: flex;
  flex-direction: column;
  line-height: 1.08;
}

.brand-mark strong {
  font-size: 1.04rem;
}

.brand-mark span {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 500;
}

.nav {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.nav a,
.nav button {
  border: 1px solid transparent;
  color: var(--muted);
  font-size: 0.95rem;
  padding: 10px 14px;
  border-radius: 999px;
  background: transparent;
  cursor: pointer;
  transition: 0.25s ease;
}

.nav a:hover,
.nav a.active,
.nav button:hover,
.nav button.active {
  color: var(--text);
  border-color: rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.06);
}

.nav-toggle {
  display: none;
}

.hero,
.section {
  position: relative;
  padding: 64px 0;
}

.hero {
  padding-top: 42px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.04fr 0.96fr;
  gap: 34px;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: 999px;
  color: #ffd9cf;
  background: rgba(255, 122, 89, 0.14);
  border: 1px solid rgba(255, 122, 89, 0.24);
  font-size: 0.86rem;
}

.hero h1,
.page-hero h1 {
  margin: 18px 0 14px;
  font-size: clamp(2.2rem, 4.5vw, 4.1rem);
  line-height: 1.08;
  letter-spacing: -0.03em;
}

.hero p,
.page-hero p,
.section-lead {
  margin: 0;
  color: var(--muted);
  line-height: 1.85;
  font-size: 1rem;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 28px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 700;
  transition: 0.25s ease;
}

.btn-primary {
  color: #0d1022;
  background: linear-gradient(135deg, #ffd66e, #ff8d6b 55%, #ff5f7b);
  box-shadow: 0 16px 28px rgba(255, 111, 93, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
}

.btn-secondary {
  color: var(--text);
  border-color: rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.04);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.09);
}

.hero-meta {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 18px;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.05);
  color: var(--muted);
  font-size: 0.9rem;
}

.showcase-card,
.panel,
.feature-card,
.stat-card,
.quote-card,
.faq-item,
.link-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
}

.showcase-card {
  padding: 22px;
}

.phone-stack {
  display: grid;
  gap: 16px;
}

.phone-frame {
  position: relative;
  overflow: hidden;
  border-radius: 30px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: linear-gradient(180deg, rgba(19, 23, 45, 0.96), rgba(13, 16, 30, 0.98));
  min-height: 250px;
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.38);
}

.phone-frame::before {
  content: "";
  position: absolute;
  inset: 14px;
  border-radius: 24px;
  border: 1px solid rgba(255, 255, 255, 0.05);
  background:
    linear-gradient(135deg, rgba(255, 122, 89, 0.14), transparent 36%),
    linear-gradient(180deg, rgba(140, 108, 255, 0.15), transparent 42%);
}

.phone-screen {
  position: absolute;
  inset: 18px;
  border-radius: 22px;
  overflow: hidden;
  background: linear-gradient(180deg, #12162b 0%, #191d36 100%);
}

.screen-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 16px 16px 10px;
}

.screen-title {
  font-size: 0.95rem;
  color: #fff;
}

.screen-sub {
  color: rgba(255, 255, 255, 0.56);
  font-size: 0.78rem;
}

.search-bar {
  margin: 0 16px 14px;
  padding: 12px 14px;
  border-radius: 16px;
  color: rgba(255, 255, 255, 0.64);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  padding: 0 16px 16px;
}

.mini-card {
  aspect-ratio: 0.8;
  border-radius: 16px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0.03)),
    linear-gradient(180deg, #5f648b, #272b4a);
  position: relative;
  overflow: hidden;
}

.mini-card::after {
  content: "";
  position: absolute;
  inset: auto 10px 10px;
  height: 36%;
  border-radius: 12px;
  background: linear-gradient(180deg, rgba(10, 12, 24, 0.02), rgba(10, 12, 24, 0.78));
}

.mini-card:nth-child(2) {
  background: linear-gradient(180deg, #f07b5d, #4d2753);
}

.mini-card:nth-child(3) {
  background: linear-gradient(180deg, #48c8b6, #123d6f);
}

.hero-ribbons {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 14px;
}

.ribbon {
  padding: 14px 16px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.ribbon strong {
  display: block;
  font-size: 1.08rem;
}

.ribbon span {
  color: var(--muted);
  font-size: 0.9rem;
}

.section-head {
  display: grid;
  gap: 12px;
  margin-bottom: 24px;
}

.section h2,
.page-hero h2 {
  margin: 0;
  font-size: clamp(1.5rem, 2.5vw, 2.25rem);
  line-height: 1.2;
}

.stat-grid,
.feature-grid,
.link-grid,
.quote-grid,
.faq-grid,
.step-grid {
  display: grid;
  gap: 18px;
}

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

.stat-card {
  padding: 20px;
}

.stat-card strong {
  display: block;
  font-size: 1.7rem;
  margin-bottom: 8px;
}

.stat-card span {
  color: var(--muted);
  line-height: 1.6;
}

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

.feature-card,
.link-card,
.quote-card,
.panel,
.faq-item {
  padding: 22px;
}

.feature-card h3,
.link-card h3,
.panel h3,
.faq-item h3 {
  margin: 0 0 10px;
  font-size: 1.12rem;
}

.feature-card p,
.link-card p,
.quote-card p,
.faq-item p,
.panel p {
  margin: 0;
  color: var(--muted);
  line-height: 1.8;
}

.feature-icon {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border-radius: 16px;
  margin-bottom: 16px;
  color: #fff;
  background: linear-gradient(135deg, rgba(255, 122, 89, 0.95), rgba(140, 108, 255, 0.95));
  box-shadow: 0 14px 26px rgba(140, 108, 255, 0.22);
  font-size: 1.2rem;
}

.preview-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.preview-card {
  display: grid;
  gap: 14px;
  justify-items: center;
  text-align: center;
}

.preview-card img {
  width: min(100%, 400px);
  border-radius: 24px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.28);
}

.preview-card figcaption {
  max-width: 400px;
  color: var(--muted);
  font-size: 0.94rem;
  line-height: 1.7;
}

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

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

.quote-card {
  position: relative;
}

.quote-card::before {
  content: "“";
  position: absolute;
  top: 6px;
  right: 16px;
  font-size: 4rem;
  line-height: 1;
  color: rgba(255, 255, 255, 0.1);
}

.quote-card strong {
  display: block;
  margin-top: 14px;
  color: #fff;
}

.quote-card small {
  color: var(--muted);
}

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

.faq-item button {
  width: 100%;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--text);
  text-align: left;
  cursor: pointer;
}

.faq-item .answer {
  display: none;
  padding-top: 14px;
}

.faq-item.active .answer {
  display: block;
}

.faq-item .toggle {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.faq-item .toggle span {
  color: var(--muted);
}

.page-hero {
  padding: 54px 0 18px;
}

.page-hero .hero-band {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 18px;
  align-items: stretch;
}

.callout {
  background: linear-gradient(135deg, rgba(255, 122, 89, 0.18), rgba(140, 108, 255, 0.12));
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-xl);
  padding: 22px;
}

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

.step-card {
  padding: 22px;
  border-radius: var(--radius-xl);
  background: var(--card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.step-card .step-no {
  display: inline-grid;
  place-items: center;
  width: 38px;
  height: 38px;
  margin-bottom: 14px;
  border-radius: 999px;
  color: #0d1022;
  font-weight: 800;
  background: linear-gradient(135deg, #ffd66e, #ff8d6b);
}

.step-card h3 {
  margin: 0 0 10px;
}

.step-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.8;
}

.content-article {
  padding: 28px;
  border-radius: var(--radius-xl);
  background: var(--card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  line-height: 1.9;
  color: var(--muted);
}

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

.content-article h2 {
  margin-top: 0;
}

.content-article h3 {
  margin-top: 28px;
  margin-bottom: 10px;
}

.content-article p,
.content-article li {
  margin: 0 0 14px;
}

.content-article ul,
.content-article ol {
  padding-left: 1.2em;
}

.download-band {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 18px;
  align-items: center;
  padding: 24px;
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, rgba(255, 122, 89, 0.22), rgba(140, 108, 255, 0.18));
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: var(--shadow);
}

.download-band h2 {
  margin: 0 0 8px;
}

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

.site-footer {
  padding: 34px 0 28px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--muted);
}

.footer-inner {
  display: grid;
  gap: 14px;
}

.legal {
  font-size: 0.92rem;
  line-height: 1.8;
}

.fineprint {
  font-size: 0.88rem;
  opacity: 0.82;
}

.jsonld {
  display: none;
}

@media (max-width: 1080px) {
  .hero-grid,
  .page-hero .hero-band,
  .stat-grid,
  .feature-grid,
  .preview-grid,
  .link-grid,
  .quote-grid,
  .step-grid,
  .download-band {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 26px;
  }
}

@media (max-width: 760px) {
  .site-wrap {
    padding: 0 16px;
  }

  .header-inner {
    flex-wrap: wrap;
    padding: 12px 0;
  }

  .nav {
    width: 100%;
    display: none;
    padding-bottom: 6px;
  }

  .nav.open {
    display: flex;
  }

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

  .hero,
  .section {
    padding: 42px 0;
  }

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

  .phone-frame {
    min-height: 210px;
  }

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