@charset "utf-8";

:root {
  --bg: #f3f6fb;
  --surface: #ffffff;
  --surface-soft: #f7faff;
  --text: #1f2329;
  --muted: #5b6472;
  --line: #dde6f2;
  --primary: #2b68ff;
  --primary-deep: #1f52d8;
  --accent: #78a6ff;
  --shadow: 0 18px 40px rgba(43, 104, 255, 0.10);
  --radius: 20px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top right, rgba(43, 104, 255, 0.12), transparent 26%),
    linear-gradient(180deg, #f8fbff 0%, #f3f6fb 50%, #eef3fb 100%);
  line-height: 1.7;
}

a {
  color: var(--primary-deep);
  text-decoration: none;
}

a:hover {
  color: var(--primary);
}

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

.container {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(14px);
  background: rgba(255, 255, 255, 0.88);
  border-bottom: 1px solid rgba(221, 230, 242, 0.86);
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 78px;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
  font-weight: 700;
  font-size: 24px;
}

.brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary) 0%, #75a4ff 100%);
  color: #fff;
  box-shadow: var(--shadow);
}

.main-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.main-nav a {
  padding: 10px 16px;
  border-radius: 999px;
  color: var(--muted);
  font-size: 14px;
}

.main-nav a:hover,
.main-nav a.active {
  background: rgba(43, 104, 255, 0.08);
  color: var(--primary-deep);
}

.hero {
  padding: 48px 0 26px;
}

.hero-grid,
.trust-grid,
.footer-grid,
.inner-layout {
  display: grid;
  gap: 24px;
}

.hero-grid {
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--primary-deep);
  font-size: 14px;
  letter-spacing: 1px;
}

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

h1 {
  font-size: clamp(36px, 5vw, 58px);
  margin-bottom: 18px;
}

.hero-desc,
.section-head p,
.platform-card p,
.review-card p,
.news-card p,
.trust-card p,
.inner-article p,
.inner-article li,
.faq-list p,
.footer-grid p {
  color: var(--muted);
}

.hero-cta-card,
.banner-card,
.platform-card,
.trust-card,
.review-card,
.news-card,
.inner-article,
.sidebar-card,
.faq-list details {
  background: rgba(255, 255, 255, 0.96);
  border: 1px solid rgba(221, 230, 242, 0.9);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero-cta-card {
  margin-top: 26px;
  padding: 24px;
}

.cta-row,
.version-box {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 18px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 999px;
  font-weight: 700;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}

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

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, #5c8dff 100%);
  color: #fff;
  box-shadow: 0 14px 28px rgba(43, 104, 255, 0.24);
}

.btn-secondary {
  background: #eef4ff;
  color: var(--primary-deep);
}

.hero-banner {
  display: grid;
  gap: 16px;
}

.banner-main {
  min-height: 308px;
  padding: 30px;
  background:
    linear-gradient(135deg, rgba(43, 104, 255, 0.98), rgba(104, 152, 255, 0.92)),
    linear-gradient(45deg, #dbe8ff 25%, transparent 25%, transparent 50%, #dbe8ff 50%, #dbe8ff 75%, transparent 75%, transparent);
  color: #fff;
  position: relative;
  overflow: hidden;
}

.banner-main::after {
  content: "LINE";
  position: absolute;
  right: 20px;
  bottom: 10px;
  font-size: 94px;
  font-weight: 800;
  color: rgba(255, 255, 255, 0.10);
  letter-spacing: 4px;
}

.banner-tag,
.news-tag,
.label {
  display: inline-flex;
  align-items: center;
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
}

.banner-tag {
  background: rgba(255, 255, 255, 0.16);
  color: #fff;
  margin-bottom: 16px;
}

.banner-side {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  padding: 16px;
}

.mini-stat {
  padding: 16px;
  border-radius: 16px;
  background: linear-gradient(180deg, #f7faff, #eef4ff);
  text-align: center;
}

.mini-stat strong {
  display: block;
  font-size: 20px;
  margin-bottom: 6px;
}

.section-block {
  padding: 34px 0;
}

.section-head {
  margin-bottom: 22px;
}

.section-head h2 {
  font-size: 30px;
  margin-bottom: 8px;
}

.platform-grid,
.review-grid,
.news-grid {
  display: grid;
  gap: 18px;
}

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

.review-grid,
.news-grid,
.footer-grid,
.trust-grid {
  grid-template-columns: repeat(3, 1fr);
}

.platform-card,
.review-card,
.news-card,
.trust-card,
.inner-article,
.sidebar-card {
  padding: 24px;
}

.icon {
  width: 58px;
  height: 58px;
  border-radius: 18px;
  margin-bottom: 18px;
  position: relative;
  background: linear-gradient(135deg, #e8f0ff, #cfe0ff);
}

.icon::before,
.icon::after {
  content: "";
  position: absolute;
  background: var(--primary-deep);
  opacity: 0.88;
}

.windows-icon::before {
  inset: 12px 30px 30px 12px;
  box-shadow: 20px 0 0 var(--primary-deep), 0 20px 0 var(--primary-deep), 20px 20px 0 var(--primary-deep);
}

.mac-icon::before {
  width: 26px;
  height: 30px;
  border-radius: 40% 40% 45% 45%;
  left: 16px;
  top: 16px;
}

.mac-icon::after {
  width: 10px;
  height: 14px;
  border-radius: 80% 0 80% 0;
  right: 15px;
  top: 12px;
  transform: rotate(18deg);
}

.android-icon::before {
  width: 26px;
  height: 22px;
  left: 16px;
  top: 18px;
  border-radius: 10px 10px 8px 8px;
}

.android-icon::after {
  width: 2px;
  height: 10px;
  left: 22px;
  top: 10px;
  box-shadow: 12px 0 0 var(--primary-deep);
}

.ios-icon::before {
  width: 22px;
  height: 30px;
  left: 18px;
  top: 14px;
  border-radius: 8px;
}

.ios-icon::after {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  left: 26px;
  bottom: 12px;
}

.data-list,
.update-list,
.footer-grid ul,
.inner-article ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.data-list li,
.update-list li,
.footer-grid li,
.inner-article li {
  padding: 12px 0;
  border-bottom: 1px dashed var(--line);
}

.data-list li {
  display: flex;
  justify-content: space-between;
  gap: 16px;
}

.emphasis {
  background: linear-gradient(180deg, #ffffff, #f3f8ff);
}

.review-card,
.news-card {
  transition: transform .22s ease, box-shadow .22s ease;
}

.review-card:hover,
.news-card:hover,
.platform-card:hover,
.sidebar-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(43, 104, 255, 0.14);
}

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

.faq-list details {
  padding: 18px 20px;
}

.faq-list summary {
  cursor: pointer;
  font-weight: 700;
}

.section-link {
  margin-top: 18px;
}

.news-tag,
.label {
  background: #eef4ff;
  color: var(--primary-deep);
  margin-bottom: 12px;
}

.site-footer {
  margin-top: 22px;
  border-top: 1px solid rgba(221, 230, 242, 0.9);
  background: rgba(255, 255, 255, 0.86);
}

.footer-grid {
  padding: 30px 0;
  gap: 24px;
}

.footer-bottom {
  text-align: center;
  padding: 16px;
  color: var(--muted);
  border-top: 1px solid rgba(221, 230, 242, 0.9);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 18px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.inner-hero {
  padding: 28px 0 18px;
}

.inner-layout {
  grid-template-columns: minmax(0, 1fr) 320px;
  align-items: start;
}

.sidebar-card {
  position: sticky;
  top: 100px;
}

.content-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 16px;
}

.content-table th,
.content-table td {
  padding: 14px 12px;
  border-bottom: 1px solid var(--line);
  text-align: left;
}

.notice-box {
  padding: 18px 20px;
  border-radius: 18px;
  background: #eef4ff;
  color: var(--primary-deep);
  margin-top: 18px;
}

.article-links {
  display: grid;
  gap: 12px;
  margin-top: 18px;
}

.article-links a {
  padding: 14px 16px;
  border-radius: 14px;
  background: #f7faff;
  border: 1px solid var(--line);
}

@media (max-width: 1080px) {
  .hero-grid,
  .inner-layout,
  .platform-grid,
  .review-grid,
  .news-grid,
  .footer-grid,
  .trust-grid {
    grid-template-columns: 1fr 1fr;
  }

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

  .sidebar-card {
    position: static;
  }
}

@media (max-width: 720px) {
  .topbar,
  .banner-side,
  .hero-grid,
  .platform-grid,
  .review-grid,
  .news-grid,
  .footer-grid,
  .trust-grid {
    grid-template-columns: 1fr;
  }

  .topbar {
    display: block;
    padding: 16px 0;
  }

  .main-nav {
    margin-top: 14px;
  }

  h1 {
    font-size: 34px;
  }

  .section-head h2 {
    font-size: 24px;
  }
}