:root {
  --bg: #0B0F19;
  --bg-soft: #111728;
  --bg-card: #161D30;
  --line: #232C42;
  --text: #E8ECF4;
  --text-dim: #8A94A8;
  --brand: #2B6CE8;
  --brand-soft: rgba(43, 108, 232, 0.12);
  --accent: #00E5C7;
  --accent-soft: rgba(0, 229, 199, 0.12);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg); color: var(--text);
  font-family: 'Noto Sans SC', -apple-system, 'Segoe UI', 'Microsoft YaHei', sans-serif;
  line-height: 1.7; -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
.container { width: 92%; max-width: 1600px; margin: 0 auto; }

nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(11, 15, 25, 0.88); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.logo img { height: 30px; display: block; }
.nav-links { display: flex; gap: 32px; font-size: 14px; color: var(--text-dim); }
.nav-links a:hover { color: var(--text); }
.nav-links a.active { color: var(--accent); }
.nav-cta {
  background: var(--brand); color: #fff; padding: 10px 22px; border-radius: 8px;
  font-size: 14px; font-weight: 500;
}

.page-hero {
  padding: 90px 0 60px;
  background: linear-gradient(180deg, rgba(43,108,232,0.08) 0%, transparent 100%);
  border-bottom: 1px solid var(--line);
}
.page-hero h1 { font-size: 48px; font-weight: 900; letter-spacing: -1.5px; line-height: 1.15; margin-bottom: 16px; }
.page-hero p { color: var(--text-dim); font-size: 17px; }

section { padding: 80px 0; }
section.bg-soft { background: var(--bg-soft); }
.mt-40 { margin-top: 40px; }
.mt-32 { margin-top: 32px; }
.mt-24 { margin-top: 24px; }
.overflow-x { overflow-x: auto; }
.platform-card.span-2 { grid-column: span 2; }
.footer-logo img { height: 24px; }
.muted-note { margin-top: 24px; color: var(--text-dim); font-size: 14px; }
.accent-link { color: var(--accent); }
.section-tag { font-size: 13px; color: var(--brand); font-weight: 500; margin-bottom: 14px; letter-spacing: 2px; }
h2 { font-size: 36px; font-weight: 900; letter-spacing: -1px; line-height: 1.2; margin-bottom: 16px; }
.section-sub { color: var(--text-dim); font-size: 16px; max-width: 720px; }

.btn-primary {
  background: var(--brand); color: #fff; padding: 14px 30px; border-radius: 10px;
  font-size: 15px; font-weight: 500; border: none; cursor: pointer;
  transition: transform 0.15s, background 0.2s; display: inline-block;
}
.btn-primary:hover { background: #1f5bd1; transform: translateY(-1px); }
.btn-ghost {
  background: rgba(255,255,255,0.08); color: #fff; padding: 14px 30px; border-radius: 10px;
  font-size: 15px; font-weight: 500; border: 1px solid rgba(255,255,255,0.2);
  transition: background 0.2s; display: inline-block;
}
.btn-ghost:hover { background: rgba(255,255,255,0.15); }

.stats { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.stat { padding: 36px 24px; border-right: 1px solid var(--line); }
.stat:last-child { border-right: none; }
.stat-num { font-size: 40px; font-weight: 900; letter-spacing: -1.5px; line-height: 1; }
.stat-num span { color: var(--accent); }
.stat-label { font-size: 14px; color: var(--text-dim); margin-top: 10px; }

.pillars { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.pillar {
  background: var(--bg-card); border: 1px solid var(--line); border-radius: 18px;
  padding: 36px 30px;
}
.pillar h3 { font-size: 20px; font-weight: 900; margin-bottom: 14px; letter-spacing: -0.5px; }
.pillar > p { font-size: 14px; color: var(--text-dim); margin-bottom: 20px; line-height: 1.8; }
.pillar ul { list-style: none; }
.pillar li {
  font-size: 13px; color: var(--text); padding: 10px 0;
  border-top: 1px solid var(--line); line-height: 1.7;
}
.pillar li b { color: var(--accent); font-weight: 500; }

.scene-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.scene-card {
  background: var(--bg-soft); border: 1px solid var(--line); border-radius: 14px;
  padding: 28px;
}
.scene-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.scene-card p { font-size: 14px; color: var(--text-dim); line-height: 1.7; }

.compare-table {
  width: 100%; border-collapse: collapse; background: var(--bg-card);
  border-radius: 14px; overflow: hidden; border: 1px solid var(--line);
}
.compare-table th, .compare-table td {
  padding: 16px 22px; text-align: left; font-size: 14px;
  border-bottom: 1px solid var(--line);
}
.compare-table th { background: var(--bg-soft); font-weight: 700; font-size: 13px; color: var(--text-dim); }
.compare-table th.highlight { color: var(--accent); }
.compare-table td.yes { color: var(--accent); }
.compare-table td.no { color: var(--text-dim); }
.compare-table tr:last-child td { border-bottom: none; }

.plan-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; }
.plan {
  background: var(--bg-card); border: 1px solid var(--line); border-radius: 14px;
  padding: 28px 22px; display: flex; flex-direction: column;
}
.plan.hot { border-color: var(--accent); position: relative; }
.plan.hot::before {
  content: "推荐"; position: absolute; top: -12px; left: 22px;
  background: var(--accent); color: #0B0F19; font-size: 11px; font-weight: 700;
  padding: 4px 12px; border-radius: 100px;
}
.plan-name { font-size: 16px; font-weight: 700; margin-bottom: 6px; }
.plan-desc { font-size: 12px; color: var(--text-dim); margin-bottom: 18px; min-height: 36px; }
.plan-price { font-size: 26px; font-weight: 900; }
.plan-price small { font-size: 12px; color: var(--text-dim); font-weight: 400; }
.plan-features { list-style: none; margin-top: 18px; flex: 1; }
.plan-features li {
  font-size: 12px; color: var(--text-dim); padding: 7px 0;
  border-top: 1px solid var(--line);
}

.faq-list { max-width: 900px; }
.faq-item {
  border: 1px solid var(--line); border-radius: 12px; margin-bottom: 12px;
  background: var(--bg-card); overflow: hidden;
}
.faq-q {
  padding: 20px 24px; font-size: 16px; font-weight: 500; cursor: pointer;
  display: flex; justify-content: space-between; align-items: center;
}
.faq-q::after { content: "+"; font-size: 22px; color: var(--text-dim); transition: transform 0.2s; }
.faq-item.open .faq-q::after { transform: rotate(45deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; color: var(--text-dim); font-size: 14px; line-height: 1.8; padding: 0 24px; }
.faq-item.open .faq-a { max-height: 500px; padding: 0 24px 20px; }

.cta-block {
  background: linear-gradient(135deg, var(--brand) 0%, #1a4aa8 100%);
  border-radius: 24px; padding: 64px 48px; text-align: center;
}
.cta-block h2 { color: #fff; margin-bottom: 14px; }
.cta-block p { color: rgba(255,255,255,0.85); margin-bottom: 28px; font-size: 16px; }
.cta-block .btn-primary { background: #fff; color: var(--brand); }

.download-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.dl-card {
  background: var(--bg-card); border: 1px solid var(--line); border-radius: 14px;
  padding: 32px 20px; text-align: center; transition: border-color 0.2s;
}
.dl-card:hover { border-color: var(--brand); }
.dl-card .os { font-size: 15px; font-weight: 500; margin-top: 14px; }
.dl-card .req { font-size: 12px; color: var(--text-dim); margin-top: 4px; }
.dl-card .dl-link {
  display: inline-block; margin-top: 14px; font-size: 13px; color: var(--accent);
}

.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.step { padding: 28px; background: var(--bg-card); border-radius: 16px; border: 1px solid var(--line); }
.step-num {
  width: 44px; height: 44px; border-radius: 50%; background: var(--brand-soft);
  color: var(--brand); display: flex; align-items: center; justify-content: center;
  font-weight: 900; font-size: 16px; margin-bottom: 16px;
}
.step h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.step p { font-size: 14px; color: var(--text-dim); }

.blog-list { max-width: 900px; }
.blog-item {
  padding: 28px 0; border-bottom: 1px solid var(--line);
}
.blog-item .meta { font-size: 12px; color: var(--text-dim); margin-bottom: 8px; }
.blog-item h3 { font-size: 20px; font-weight: 700; margin-bottom: 8px; }
.blog-item p { font-size: 14px; color: var(--text-dim); }
.blog-item h3 a:hover { color: var(--accent); }

footer { border-top: 1px solid var(--line); padding: 40px 0; margin-top: 40px; }
.footer-inner { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 20px; }
.footer-links { display: flex; gap: 28px; font-size: 13px; color: var(--text-dim); }
.copy { font-size: 12px; color: var(--text-dim); }
.updated { font-size: 12px; color: var(--text-dim); margin-top: 16px; opacity: 0.7; }

@media (max-width: 1100px) {
  .plan-grid { grid-template-columns: repeat(2, 1fr); }
  .download-grid { grid-template-columns: repeat(3, 1fr); }
  .pillars { grid-template-columns: 1fr; }
}
@media (max-width: 900px) {
  .page-hero h1 { font-size: 34px; }
  h2 { font-size: 26px; }
  .steps, .scene-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stat { border-right: none; border-bottom: 1px solid var(--line); }
  .nav-links { display: none; }
}
@media (max-width: 560px) {
  .plan-grid, .download-grid { grid-template-columns: 1fr 1fr; }
}

/* 面包屑 */
.breadcrumb-bar { padding-top: 24px; }
.breadcrumb { font-size: 13px; color: var(--text-dim); margin-bottom: 20px; }
.breadcrumb a { color: var(--text-dim); }
.breadcrumb a:hover { color: var(--text); }
.breadcrumb span { margin: 0 8px; opacity: 0.5; }

/* 分类标签 */
.chip {
  display: inline-block; font-size: 12px; padding: 4px 12px;
  border-radius: 100px; background: var(--brand-soft); color: var(--brand);
  margin-right: 8px; margin-bottom: 8px;
}
.chip.accent { background: var(--accent-soft); color: var(--accent); }
.chip.ghost { background: transparent; border: 1px solid var(--line); color: var(--text-dim); }
.chip-row { margin-bottom: 40px; }

/* 教程文章卡片 */
.tutorial-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.tutorial-card {
  background: var(--bg-card); border: 1px solid var(--line); border-radius: 14px;
  padding: 0; overflow: hidden; transition: border-color 0.2s;
  display: flex; gap: 20px;
}
.tutorial-card:hover { border-color: var(--brand); }
.tutorial-card .thumb {
  flex-shrink: 0; width: 160px; background: var(--bg-soft);
  display: flex; align-items: center; justify-content: center;
}
.tutorial-card .thumb img { width: 100%; height: 100%; object-fit: cover; }
.tutorial-card .body { padding: 20px 20px 20px 0; flex: 1; }
.tutorial-card .meta { font-size: 12px; color: var(--text-dim); margin-bottom: 10px; display: flex; gap: 12px; flex-wrap: wrap; }
.tutorial-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; line-height: 1.4; }
.tutorial-card h3 a { color: var(--text); }
.tutorial-card h3 a:hover { color: var(--accent); }
.tutorial-card p { font-size: 14px; color: var(--text-dim); line-height: 1.7; margin-bottom: 12px; }
.tutorial-card .readmore { font-size: 13px; color: var(--accent); }
.tutorial-home .tutorial-card {
    display: block;
    padding: 1rem;
}
/* 下载平台大卡片 */
.platform-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.platform-card {
  background: var(--bg-card); border: 1px solid var(--line); border-radius: 16px;
  padding: 32px; display: flex; gap: 24px; align-items: flex-start;
}
.platform-card .icon { flex-shrink: 0; width: 48px; height: 48px; }
.platform-card .info h3 { font-size: 18px; font-weight: 700; margin-bottom: 6px; }
.platform-card .info .req { font-size: 13px; color: var(--text-dim); margin-bottom: 14px; }
.platform-card .info .dl-link {
  display: inline-block; background: var(--brand); color: #fff;
  padding: 8px 20px; border-radius: 8px; font-size: 13px;
}

/* FAQ 分组 */
.faq-group-title {
  font-size: 18px; font-weight: 700; margin: 48px 0 20px;
  padding-left: 14px; border-left: 3px solid var(--brand);
}

/* 时间线步骤 */
.timeline { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 40px; }
.timeline-item { display: flex; gap: 24px; padding: 20px 0; border-bottom: 1px solid var(--line); }
.timeline-item:last-child { border-bottom: none; }
.timeline-item .num {
  flex-shrink: 0; width: 36px; height: 36px; border-radius: 50%;
  background: var(--brand-soft); color: var(--brand);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 14px;
}
.timeline-item .body h4 { font-size: 16px; font-weight: 700; margin-bottom: 6px; }
.timeline-item .body p { font-size: 14px; color: var(--text-dim); line-height: 1.7; }

/* 信息块 */
.info-block {
  background: var(--bg-card); border: 1px solid var(--line); border-radius: 14px;
  padding: 28px; margin-top: 24px;
}
.info-block h4 { font-size: 16px; font-weight: 700; margin-bottom: 12px; }
.info-block p, .info-block li { font-size: 14px; color: var(--text-dim); line-height: 1.8; }
.info-block ul { padding-left: 20px; margin-top: 8px; }

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

/* 下载页首屏左文右图 */
.hero-split { display: grid; grid-template-columns: 5fr 6fr; gap: 72px; align-items: center; }
.hero-split-text h1 { font-size: 60px; letter-spacing: -2px; line-height: 1.1; margin-bottom: 24px; }
.hero-split-text .lead { font-size: 17px; color: var(--text-dim); line-height: 1.9; margin-bottom: 36px; }
.hero-split-text .actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 20px; }
.hero-split-text .note { font-size: 13px; color: var(--text-dim); }
.hero-split-img img {
  width: 100%; height: auto; display: block; border-radius: 12px;
  box-shadow: 0 20px 60px rgba(43,108,232,0.15);
}

/* 价格页亮点卡片 */
.price-highlights { display: flex; flex-direction: column; gap: 16px; }
.highlight-card {
  background: var(--bg-card); border: 1px solid var(--line); border-radius: 14px;
  padding: 24px 28px; display: flex; align-items: center; gap: 24px;
}
.highlight-num {
  font-size: 32px; font-weight: 900; color: var(--accent);
  min-width: 80px; line-height: 1;
}
.highlight-label { font-size: 16px; font-weight: 700; margin-bottom: 4px; }
.highlight-desc { font-size: 13px; color: var(--text-dim); }

/* 功能页工作原理 */
.how-it-works {
  background: var(--bg-card); border: 1px solid var(--line); border-radius: 18px;
  padding: 40px;
}
.how-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.how-step { padding-left: 20px; border-left: 2px solid var(--line); }
.how-step .step-label { font-size: 12px; color: var(--brand); font-weight: 500; margin-bottom: 8px; }
.how-step h4 { font-size: 16px; font-weight: 700; margin-bottom: 8px; }
.how-step p { font-size: 13px; color: var(--text-dim); line-height: 1.7; }
@media (max-width: 900px) { .how-grid { grid-template-columns: 1fr; gap: 20px; } }

/* 下载页 FAQ 两列 */
.dl-faq-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 32px; }
.dl-faq-item { background: var(--bg-card); border: 1px solid var(--line); border-radius: 12px; padding: 24px; }
.dl-faq-q { font-size: 15px; font-weight: 600; color: var(--text); margin-bottom: 12px; }
.dl-faq-a { font-size: 14px; color: var(--text-dim); line-height: 1.8; }
.dl-faq-a ol { margin: 0; padding-left: 20px; }
.dl-faq-a li { margin-bottom: 6px; }
.faq-home .faq-a{}


@media (max-width: 900px) {
  .hero-split { grid-template-columns: 1fr !important; gap: 40px; }
  .dl-faq-grid { grid-template-columns: 1fr; }
  .hero-split-text h1 { font-size: 40px; }
}

.center { text-align: center; padding: 80px 0 40px; }`n.center .lead { font-size: 17px; color: var(--text-dim); line-height: 1.9; max-width: 640px; margin: 0 auto 32px; }
.center .chip-row { justify-content: center; }

/* 分页 */
.pagination { display: flex; gap: 8px; justify-content: center; margin-top: 40px; }
.pagination .page {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 36px; height: 36px; padding: 0 12px;
  border: 1px solid var(--line); border-radius: 8px;
  font-size: 14px; color: var(--text-dim);
}
.pagination .page.active { background: var(--brand); color: #fff; border-color: var(--brand); }
.pagination .page:hover:not(.active) { border-color: var(--brand); color: var(--brand); }
/* 首页 hero */
.hero {
  position: relative; min-height: 90vh;
  display: flex; align-items: center;
  background:
    linear-gradient(90deg, rgba(11,15,25,0.92) 0%, rgba(11,15,25,0.6) 45%, rgba(11,15,25,0.3) 100%),
    url('../assets/background.webp') center/cover no-repeat;
}
.hero-content { max-width: 760px; padding: 100px 0; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; color: var(--accent);
  background: var(--accent-soft); padding: 6px 14px; border-radius: 100px;
  margin-bottom: 28px;
}
.eyebrow-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); animation: pulse 2s infinite; }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.4; } }
.hero h1 { font-size: 72px; line-height: 1.05; font-weight: 900; letter-spacing: -2.5px; margin-bottom: 28px; }
.hero h1 .accent { color: #6aa0ff; }
.hero-sub { font-size: 18px; color: #C5CDDD; max-width: 620px; margin-bottom: 20px; line-height: 1.8; }
.hero-points { display: flex; gap: 20px; flex-wrap: wrap; margin-bottom: 36px; }
.hero-points span { font-size: 13px; color: var(--text-dim); }
.hero-points span b { color: var(--accent); font-weight: 500; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-note { font-size: 13px; color: var(--text-dim); margin-top: 20px; }
@media (max-width: 900px) {
  .hero h1 { font-size: 46px; }
  .hero { min-height: 70vh; }
  .scene-split { grid-template-columns: 1fr !important; }
  .faq-grid { grid-template-columns: 1fr !important; }
}
@media (max-width: 560px) { .hero h1 { font-size: 34px; } }

/* 首页场景 */
.scene-split { margin-top: 48px; display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: stretch; }
.scene-list { display: flex; flex-direction: column; gap: 24px; }
.scene-visual { display: flex; align-items: center; justify-content: center; background: var(--bg-card); border: 1px solid var(--line); border-radius: 16px; padding: 24px; }
.scene-visual img { width: 100%; height: auto; border-radius: 8px; }
.scene-item h3 { font-size: 17px; margin-bottom: 8px; color: var(--text); }
.scene-item p { font-size: 14px; color: var(--text-dim); line-height: 1.7; }

/* 首页 FAQ */
.faq-grid-home { margin-top: 32px; display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.faq-grid-home .faq-item { background: var(--bg-card); border: 1px solid var(--line); border-radius: 12px; padding: 24px; }
.faq-grid-home .faq-q { font-size: 15px; font-weight: 600; color: var(--text); margin-bottom: 8px; }
.faq-grid-home .faq-a { font-size: 14px; color: var(--text-dim); line-height: 1.7; }
.faq-grid-home ol { margin: 0; padding-left: 20px; line-height: 2; }

/* 工具类 */
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }
.mt-40 { margin-top: 40px; }
.mt-48 { margin-top: 48px; }
.table-wrap { overflow-x: auto; margin-top: 32px; }
.compare-table th:nth-child(1) { width: 24%; }
.compare-table th:nth-child(2) { width: 38%; }
.compare-table th:nth-child(3) { width: 38%; }
/* 文章详情页 */
.article-body { max-width: 760px; }
.article-body h2 { font-size: 24px; font-weight: 700; margin: 40px 0 16px; }
.article-body p { font-size: 16px; line-height: 1.9; color: var(--text); margin-bottom: 16px; }
.article-body ul, .article-body ol { margin: 0 0 20px; padding-left: 24px; line-height: 2; }
.article-body li { font-size: 15px; color: var(--text-dim); }
.article-body b { color: var(--text); }
.meta-line { font-size: 13px; color: var(--text-dim); margin-top: 16px; }
.article-cta {
  margin-top: 48px; padding: 32px; background: var(--bg-card);
  border: 1px solid var(--line); border-radius: 14px; text-align: center;
}
.article-cta h3 { font-size: 20px; margin-bottom: 8px; }
.article-cta p { font-size: 14px; color: var(--text-dim); margin-bottom: 20px; }.article-img { text-align: center; margin: 24px 0; }
.article-img img { max-width: 100%; border-radius: 12px; border: 1px solid var(--line); }
/* 相关文章 */
.related-posts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 20px; }
.related-card {
  display: block; background: var(--bg-card); border: 1px solid var(--line);
  border-radius: 12px; padding: 20px; transition: border-color 0.2s;
}
.related-card:hover { border-color: var(--brand); }
.related-cat { font-size: 12px; color: var(--accent); margin-bottom: 8px; }
.related-card h3 { font-size: 15px; font-weight: 600; margin-bottom: 8px; color: var(--text); line-height: 1.4; }
.related-card p { font-size: 13px; color: var(--text-dim); line-height: 1.6; }
@media (max-width: 900px) { .related-posts { grid-template-columns: 1fr; } }