:root {
  --ink: #0b0b0f;
  --muted: #5f6672;
  --line: #e4e7ec;
  --bg: #ffffff;
  --bg-soft: #f6f7f9;
  --cyan: #25f4ee;
  --pink: #fe2c55;
  --radius: 8px;
  --shadow: 0 10px 30px rgba(15, 15, 30, 0.06);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", system-ui, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.7;
  letter-spacing: 0;
}

button {
  font: inherit;
}

a {
  color: inherit;
}

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

i[data-lucide] {
  width: 18px;
  height: 18px;
}

.container {
  max-width: 1080px;
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  min-height: 68px;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  min-height: 42px;
  font-size: 18px;
  font-weight: 800;
  text-decoration: none;
}

.brand-logo {
  width: 32px;
  height: 32px;
  border-radius: 7px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 18px;
}

.site-nav a {
  color: var(--ink);
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  text-decoration: none;
}

.site-nav a:hover {
  color: var(--pink);
}

.site-nav .nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 0 16px;
  border-radius: 999px;
  background: var(--ink);
  color: #fff;
  font-weight: 700;
}

.site-nav .nav-cta:hover {
  background: var(--pink);
  color: #fff;
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  color: var(--ink);
  cursor: pointer;
}

.hero {
  position: relative;
  min-height: 620px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 88px 24px;
  background: var(--ink);
  color: #fff;
  text-align: center;
}

.hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 22%;
  opacity: 0.28;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: rgba(7, 7, 10, 0.72);
}

.hero-inner {
  position: relative;
  max-width: 820px;
}

.hero-logo {
  width: 76px;
  height: 76px;
  margin: 0 auto 18px;
  border-radius: 18px;
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.35);
}

.hero-kicker {
  margin: 0 0 12px;
  color: var(--cyan);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.hero h1 {
  margin: 0 0 18px;
  font-size: 48px;
  line-height: 1.15;
  letter-spacing: 0;
}

.hero-lead {
  max-width: 640px;
  margin: 0 auto 28px;
  color: rgba(255, 255, 255, 0.82);
  font-size: 17px;
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-bottom: 20px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 46px;
  padding: 0 20px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
}

.btn i {
  width: 18px;
  height: 18px;
}

.btn-android {
  background: var(--cyan);
  color: var(--ink);
}

.btn-ios {
  background: var(--pink);
  color: #fff;
}

.btn-ghost {
  border-color: rgba(255, 255, 255, 0.55);
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.16);
  border-color: #fff;
}

.btn-primary {
  background: var(--ink);
  color: #fff;
}

.btn-primary:hover {
  background: var(--pink);
  color: #fff;
}

.btn-block {
  width: 100%;
  margin-top: 16px;
}

.hero-note {
  margin: 0;
  color: rgba(255, 255, 255, 0.62);
  font-size: 13px;
}

.section {
  padding: 76px 24px;
}

.section-alt {
  background: var(--bg-soft);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section-head {
  max-width: 760px;
  margin: 0 auto 34px;
  text-align: center;
}

.section-kicker {
  display: inline-block;
  margin: 0 0 10px;
  padding: 4px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  color: var(--pink);
  font-size: 13px;
  font-weight: 800;
}

.section h2 {
  margin: 0 0 10px;
  font-size: 32px;
  line-height: 1.3;
  letter-spacing: 0;
}

.section-head p {
  margin: 0;
  color: var(--muted);
  font-size: 16px;
}

.product-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 34px;
  align-items: start;
}

.info-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.info-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 13px 18px;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
}

.info-row:last-child {
  border-bottom: 0;
}

.info-row span {
  color: var(--muted);
}

.info-row strong {
  text-align: right;
  font-weight: 700;
}

.feature-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.feature-item {
  display: flex;
  gap: 14px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.feature-item i {
  flex: 0 0 20px;
  width: 20px;
  height: 20px;
  color: var(--pink);
}

.feature-item h3 {
  margin: 0 0 6px;
  font-size: 16px;
}

.feature-item p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.carousel {
  position: relative;
  max-width: 760px;
  margin: 0 auto;
}

.carousel-viewport {
  overflow: hidden;
  border-radius: 18px;
  background: var(--ink);
  box-shadow: 0 22px 60px rgba(15, 15, 30, 0.14);
}

.carousel-track {
  display: flex;
  transition: transform 0.45s ease;
}

.carousel-slide {
  flex: 0 0 100%;
  min-width: 100%;
  margin: 0;
  padding: 34px 24px 26px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
}

.carousel-slide img {
  max-height: 520px;
  width: auto;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.16);
}

.carousel-slide figcaption {
  color: rgba(255, 255, 255, 0.72);
  font-size: 14px;
  font-weight: 600;
}

.carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: #fff;
  color: var(--ink);
  box-shadow: 0 8px 22px rgba(15, 15, 30, 0.12);
  cursor: pointer;
}

.carousel-btn:hover {
  background: var(--cyan);
}

.carousel-prev {
  left: -58px;
}

.carousel-next {
  right: -58px;
}

.carousel-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 18px;
}

.carousel-dot {
  width: 9px;
  height: 9px;
  padding: 0;
  border: 0;
  border-radius: 999px;
  background: #d3d6dc;
  cursor: pointer;
}

.carousel-dot.is-active {
  background: var(--pink);
}

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

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

.review-top {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.avatar {
  flex: 0 0 42px;
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  color: #fff;
  font-weight: 800;
}

.avatar-a {
  background: var(--pink);
}

.avatar-b {
  background: #3b82f6;
}

.avatar-c {
  background: var(--ink);
}

.review-top h3 {
  margin: 0;
  font-size: 16px;
}

.review-top p {
  margin: 2px 0 0;
  color: var(--muted);
  font-size: 12px;
}

.stars {
  margin-left: auto;
  color: #f5b301;
  font-size: 14px;
  white-space: nowrap;
}

.review-card > p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.faq-list {
  display: grid;
  gap: 12px;
  max-width: 860px;
  margin: 0 auto;
}

.faq-list details {
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.faq-list summary {
  cursor: pointer;
  font-size: 16px;
  font-weight: 700;
  list-style: none;
}

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

.faq-list details p {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 15px;
}

.article-cats {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-bottom: 26px;
}

.article-cats span {
  padding: 6px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

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

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

.article-tag {
  display: inline-flex;
  margin-bottom: 12px;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--bg-soft);
  color: var(--pink);
  font-size: 12px;
  font-weight: 800;
}

.article-card h3 {
  margin: 0 0 10px;
  font-size: 18px;
  line-height: 1.45;
}

.article-card h3 a {
  text-decoration: none;
}

.article-card h3 a:hover {
  color: var(--pink);
}

.article-card p {
  margin: 0 0 16px;
  color: var(--muted);
  font-size: 14px;
}

.article-meta {
  display: flex;
  gap: 18px;
  color: #8a919d;
  font-size: 12px;
}

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

.about-block {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.about-block h3 {
  margin: 0 0 10px;
  font-size: 18px;
}

.about-block p {
  margin: 0 0 14px;
  color: var(--muted);
  font-size: 14px;
}

.about-block ul {
  margin: 0;
  padding-left: 20px;
  color: var(--muted);
  font-size: 14px;
}

.about-block li {
  margin-bottom: 6px;
}

.notice {
  margin-top: 16px;
  padding: 14px 16px;
  border-left: 4px solid var(--pink);
  border-radius: 4px;
  background: #fff5f7;
  color: var(--muted);
  font-size: 13px;
}

.site-footer {
  background: var(--ink);
  color: #c9ced8;
  padding: 54px 24px 28px;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 0.8fr;
  gap: 40px;
}

.site-footer h2 {
  margin: 0 0 12px;
  color: #fff;
  font-size: 20px;
}

.site-footer h3 {
  margin: 0 0 12px;
  color: #fff;
  font-size: 16px;
}

.site-footer p {
  margin: 0;
  color: #a9b0bd;
  font-size: 14px;
}

.site-footer a {
  display: block;
  margin-bottom: 9px;
  color: #c9ced8;
  font-size: 14px;
  text-decoration: none;
}

.site-footer a:hover {
  color: var(--cyan);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px;
  margin-top: 36px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 12px;
}

.footer-bottom p {
  font-size: 12px;
}

.article-page {
  padding: 46px 24px 64px;
  background: var(--bg-soft);
}

.article-wrap {
  max-width: 860px;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 22px;
  color: var(--muted);
  font-size: 14px;
}

.breadcrumb a {
  color: var(--pink);
  text-decoration: none;
}

.article-head {
  margin-bottom: 28px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--line);
}

.article-head h1 {
  margin: 14px 0 8px;
  font-size: 32px;
  line-height: 1.35;
  letter-spacing: 0;
}

.article-head p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.article-content {
  color: #2a2f3a;
}

.article-content h2 {
  margin: 28px 0 12px;
  font-size: 22px;
  line-height: 1.4;
  letter-spacing: 0;
}

.article-content p {
  margin: 0 0 14px;
  font-size: 16px;
}

.article-content ul,
.article-content ol {
  margin: 0 0 16px;
  padding-left: 22px;
}

.article-content li {
  margin-bottom: 8px;
  font-size: 15px;
}

.article-content a {
  color: var(--pink);
}

.article-content .notice {
  margin-top: 20px;
}

.related-articles {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 32px;
}

.related-articles a {
  display: inline-flex;
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  color: var(--ink);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
}

.related-articles a:hover {
  border-color: var(--pink);
  color: var(--pink);
}

.download-page {
  padding: 46px 24px 64px;
  background: var(--bg-soft);
}

.download-wrap {
  max-width: 760px;
}

.download-hero {
  padding: 42px 26px 34px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  text-align: center;
  box-shadow: var(--shadow);
}

.download-logo {
  width: 80px;
  height: 80px;
  margin: 0 auto 16px;
  border-radius: 18px;
  box-shadow: 0 10px 28px rgba(15, 15, 30, 0.14);
}

.download-hero h1 {
  margin: 12px 0 10px;
  font-size: 34px;
  line-height: 1.3;
  letter-spacing: 0;
}

.download-desc {
  margin: 0 auto 8px;
  max-width: 480px;
  color: var(--muted);
  font-size: 15px;
}

.btn-download {
  width: 100%;
  max-width: 430px;
  min-height: 54px;
  margin: 22px auto 12px;
  font-size: 17px;
}

.btn-copy {
  display: flex;
  margin: 0 auto;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
}

.btn-copy:hover {
  border-color: var(--pink);
  color: var(--pink);
}

.download-hint {
  margin: 12px 0 0;
  color: #8a919d;
  font-size: 13px;
}

.download-steps,
.download-faq,
.download-note,
.download-link-box {
  margin-top: 22px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.download-steps h2,
.download-faq h2 {
  margin: 0 0 14px;
  font-size: 21px;
  letter-spacing: 0;
}

.download-steps ol {
  margin: 0;
  padding-left: 22px;
}

.download-steps li {
  margin-bottom: 9px;
  color: var(--muted);
  font-size: 15px;
}

.download-steps li:last-child {
  margin-bottom: 0;
}

.download-note {
  border-left: 4px solid var(--pink);
  color: var(--muted);
  font-size: 14px;
}

.download-link-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.download-link-box span {
  flex: 1;
  min-width: 0;
  overflow-wrap: anywhere;
  color: var(--muted);
  font-size: 14px;
}

.download-link-box a {
  flex: 0 0 auto;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--bg-soft);
  color: var(--ink);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
}

.download-link-box a:hover {
  border-color: var(--pink);
  color: var(--pink);
}

.download-faq .faq-list {
  margin-top: 14px;
}

.download-disclaimer {
  margin: 22px 0 0;
  color: #8a919d;
  font-size: 13px;
  text-align: center;
}

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

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

  .carousel-prev {
    left: 4px;
  }

  .carousel-next {
    right: 4px;
  }

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

@media (max-width: 680px) {
  .header-inner {
    min-height: 62px;
    padding: 0 16px;
  }

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

  .site-nav {
    display: none;
    position: absolute;
    top: 62px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px 16px 20px;
    background: #fff;
    border-bottom: 1px solid var(--line);
    box-shadow: 0 18px 30px rgba(15, 15, 30, 0.1);
  }

  body.nav-open .site-nav {
    display: flex;
  }

  .site-nav a {
    padding: 12px 0;
    border-bottom: 1px solid var(--line);
  }

  .site-nav a:last-child {
    border-bottom: 0;
  }

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

  .hero {
    min-height: auto;
    padding: 56px 16px;
  }

  .hero h1 {
    font-size: 34px;
  }

  .hero-buttons {
    flex-direction: column;
  }

  .hero-buttons .btn {
    width: 100%;
  }

  .section {
    padding: 56px 16px;
  }

  .section h2 {
    font-size: 26px;
  }

  .feature-list,
  .review-grid,
  .article-grid {
    grid-template-columns: 1fr;
  }

  .carousel-slide {
    padding: 22px 14px 18px;
  }

  .carousel-slide img {
    max-height: 380px;
  }

  .carousel-btn {
    width: 38px;
    height: 38px;
  }

  .footer-inner {
    grid-template-columns: 1fr 1fr;
    gap: 28px;
  }

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

  .footer-bottom {
    flex-direction: column;
  }
}