/* ============================================================
   YY漫画1 APP 官网落地页 - 深蓝紫科技风
   参考 flaixz.cn 结构，主题改为漫画阅读
   ============================================================ */

:root {
  --c-bg: #0b1026;             /* 深蓝黑底 */
  --c-bg-2: #0f1535;
  --c-surface: #141b3d;
  --c-surface-2: #1a2247;
  --c-primary: #6366f1;        /* 靛蓝 */
  --c-primary-2: #8b5cf6;      /* 紫 */
  --c-accent: #22d3ee;         /* 青蓝强调 */
  --c-accent-2: #f472b6;       /* 粉紫点缀 */
  --c-text: #e8ecff;
  --c-text-sub: #9aa5d1;
  --c-text-mute: #6b76a8;
  --c-line: rgba(255,255,255,.08);
  --grad-main: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
  --grad-accent: linear-gradient(135deg, #22d3ee 0%, #818cf8 100%);
  --shadow-glow: 0 0 40px rgba(99,102,241,.35);
  --radius: 14px;
  --radius-lg: 22px;
  --max-w: 1180px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei",
    "Helvetica Neue", Arial, sans-serif;
  background: var(--c-bg);
  color: var(--c-text);
  line-height: 1.65;
  font-size: 15px;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }

.container { max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }

/* ====== 顶部导航 ====== */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(11,16,38,.75);
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid var(--c-line);
  transition: background .3s;
}
.site-header.scrolled { background: rgba(11,16,38,.95); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 20px; }
.brand-logo { width: 38px; height: 38px; border-radius: 10px; object-fit: cover; box-shadow: 0 0 0 2px rgba(139,92,246,.4); }
.brand-name em { font-style: normal; background: var(--grad-main); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.nav-links { display: flex; gap: 28px; }
.nav-links a { font-size: 15px; color: var(--c-text-sub); font-weight: 500; transition: color .2s; position: relative; }
.nav-links a:hover, .nav-links a.active { color: #fff; }
.nav-links a.active::after { content:""; position:absolute; left:0; right:0; bottom:-6px; height:2px; background: var(--grad-accent); border-radius:2px; }
.nav-download {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 9px 20px; background: var(--grad-main); color: #fff;
  font-weight: 600; font-size: 14px; border-radius: 999px;
  box-shadow: 0 4px 18px rgba(139,92,246,.4);
  transition: transform .2s, box-shadow .2s;
}
.nav-download:hover { transform: translateY(-1px); box-shadow: 0 8px 24px rgba(139,92,246,.55); }
.hamburger { display: none; width: 40px; height: 40px; border-radius: 8px; align-items: center; justify-content: center; }
.hamburger span, .hamburger span::before, .hamburger span::after { display:block; width:22px; height:2px; background:#fff; position:relative; transition: all .25s; }
.hamburger span::before { content:""; position:absolute; top:-7px; }
.hamburger span::after  { content:""; position:absolute; top:7px; }
.hamburger.open span { background: transparent; }
.hamburger.open span::before { transform: translateY(7px) rotate(45deg); }
.hamburger.open span::after  { transform: translateY(-7px) rotate(-45deg); }

/* ====== Hero ====== */
.hero {
  position: relative;
  padding: 150px 0 90px;
  overflow: hidden;
  background:
    radial-gradient(ellipse 80% 60% at 20% 10%, rgba(99,102,241,.25), transparent 60%),
    radial-gradient(ellipse 60% 50% at 85% 30%, rgba(139,92,246,.22), transparent 60%),
    radial-gradient(ellipse 50% 40% at 50% 100%, rgba(34,211,238,.12), transparent 60%),
    var(--c-bg);
}
.hero-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 40px; align-items: center; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 16px; border: 1px solid rgba(139,92,246,.4);
  border-radius: 999px; font-size: 12px; letter-spacing: 3px;
  color: var(--c-accent); margin-bottom: 22px;
  background: rgba(139,92,246,.1);
}
.eyebrow::before { content:""; width:6px; height:6px; border-radius:50%; background: var(--c-accent); box-shadow: 0 0 10px var(--c-accent); }
.hero h1 {
  font-size: clamp(38px, 5.5vw, 60px);
  line-height: 1.15; font-weight: 900; margin-bottom: 20px;
  letter-spacing: 1px;
}
.hero h1 .grad { background: var(--grad-main); -webkit-background-clip:text; background-clip:text; -webkit-text-fill-color: transparent; }
.hero-desc { font-size: 16px; line-height: 1.85; color: var(--c-text-sub); max-width: 560px; margin-bottom: 26px; }
.hero-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 30px; }
.hero-tags span {
  padding: 7px 16px; background: var(--c-surface);
  border: 1px solid var(--c-line); border-radius: 999px;
  font-size: 13px; color: var(--c-text-sub);
  transition: all .2s; cursor: pointer;
}
.hero-tags span:hover { border-color: var(--c-primary); color: #fff; background: rgba(99,102,241,.15); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 28px; }
.btn-primary, .btn-ghost {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 30px; border-radius: 999px;
  font-size: 15px; font-weight: 700; transition: transform .2s, box-shadow .2s;
}
.btn-primary { background: var(--grad-main); color: #fff; box-shadow: 0 8px 28px rgba(139,92,246,.45); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 36px rgba(139,92,246,.6); }
.btn-ghost { background: rgba(255,255,255,.06); color: #fff; border: 1px solid rgba(255,255,255,.18); backdrop-filter: blur(6px); }
.btn-ghost:hover { background: rgba(255,255,255,.12); transform: translateY(-2px); }
.hero-meta { display: flex; flex-wrap: wrap; gap: 18px; font-size: 13px; color: var(--c-text-mute); }
.hero-meta .dot { margin: 0 6px; }

/* 手机 mockup */
.phone-wrap { position: relative; display: flex; justify-content: center; }
.phone {
  width: 280px; aspect-ratio: 9/18;
  background: linear-gradient(160deg, #1a2247, #0b1026);
  border-radius: 38px;
  border: 1px solid rgba(255,255,255,.12);
  box-shadow: 0 30px 80px rgba(0,0,0,.5), 0 0 0 8px rgba(255,255,255,.03), 0 0 60px rgba(99,102,241,.3);
  overflow: hidden; position: relative;
}
.phone-notch {
  position: absolute; top: 12px; left: 50%; transform: translateX(-50%);
  width: 100px; height: 22px; background: #000; border-radius: 14px; z-index: 5;
}
.phone-screen { width: 100%; height: 100%; position: relative; overflow: hidden; }
.phone-screen img { width: 100%; height: 100%; object-fit: cover; }
.phone-screen::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(11,16,38,.2), transparent 30%, transparent 70%, rgba(11,16,38,.4));
}
.phone-float {
  position: absolute; padding: 10px 16px;
  background: rgba(20,27,61,.85); backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,.12); border-radius: 14px;
  font-size: 12px; font-weight: 600;
  box-shadow: 0 10px 30px rgba(0,0,0,.35);
  animation: float 4s ease-in-out infinite;
}
.phone-float.f1 { top: 18%; left: -30px; color: var(--c-accent); }
.phone-float.f2 { bottom: 22%; right: -20px; color: var(--c-accent-2); animation-delay: 1.5s; }
@keyframes float { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-10px)} }

/* ====== 数据条 ====== */
.stats-bar {
  background: var(--c-surface);
  border-block: 1px solid var(--c-line);
  padding: 40px 0;
}
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; text-align: center; }
.stat-num { font-size: 38px; font-weight: 900; background: var(--grad-main); -webkit-background-clip:text; background-clip:text; -webkit-text-fill-color: transparent; line-height: 1.1; }
.stat-label { font-size: 13px; color: var(--c-text-mute); margin-top: 6px; }

/* ====== 通用 Section ====== */
.section { padding: 90px 0; position: relative; }
.section-head { text-align: center; margin-bottom: 50px; }
.section-eyebrow { display: inline-block; font-size: 12px; letter-spacing: 3px; color: var(--c-accent); font-weight: 700; margin-bottom: 10px; }
.section-title { font-size: clamp(26px, 3.4vw, 38px); font-weight: 800; margin-bottom: 12px; }
.section-desc { color: var(--c-text-sub); font-size: 15px; max-width: 600px; margin: 0 auto; }

/* ====== 功能亮点 6 卡 ====== */
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.feature-card {
  background: var(--c-surface); border: 1px solid var(--c-line);
  border-radius: var(--radius-lg); padding: 30px 26px;
  transition: transform .25s, border-color .25s, box-shadow .25s;
  position: relative; overflow: hidden;
}
.feature-card::before {
  content:""; position:absolute; top:0; left:0; right:0; height:2px;
  background: var(--grad-main); opacity: 0; transition: opacity .25s;
}
.feature-card:hover { transform: translateY(-6px); border-color: rgba(139,92,246,.4); box-shadow: 0 16px 40px rgba(0,0,0,.3); }
.feature-card:hover::before { opacity: 1; }
.feature-icon {
  width: 54px; height: 54px; border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(99,102,241,.15); margin-bottom: 18px;
}
.feature-icon svg { width: 26px; height: 26px; stroke: var(--c-accent); fill: none; stroke-width: 1.8; }
.feature-card:nth-child(2) .feature-icon { background: rgba(244,114,182,.15); }
.feature-card:nth-child(2) .feature-icon svg { stroke: var(--c-accent-2); }
.feature-card:nth-child(3) .feature-icon { background: rgba(34,211,238,.15); }
.feature-card:nth-child(3) .feature-icon svg { stroke: var(--c-accent); }
.feature-card:nth-child(4) .feature-icon { background: rgba(250,204,21,.15); }
.feature-card:nth-child(4) .feature-icon svg { stroke: #facc15; }
.feature-card:nth-child(5) .feature-icon { background: rgba(74,222,128,.15); }
.feature-card:nth-child(5) .feature-icon svg { stroke: #4ade80; }
.feature-card:nth-child(6) .feature-icon { background: rgba(167,139,250,.15); }
.feature-card:nth-child(6) .feature-icon svg { stroke: #a78bfa; }
.feature-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.feature-card p { font-size: 14px; color: var(--c-text-sub); line-height: 1.7; }

/* ====== 作品网格 ====== */
.work-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.work-card {
  background: var(--c-surface); border-radius: var(--radius-lg);
  overflow: hidden; border: 1px solid var(--c-line);
  transition: transform .25s, box-shadow .25s; display: flex; flex-direction: column;
}
.work-card:hover { transform: translateY(-6px); box-shadow: 0 16px 40px rgba(0,0,0,.4); }
.work-cover { position: relative; aspect-ratio: 3/4; overflow: hidden; }
.work-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.work-card:hover .work-cover img { transform: scale(1.06); }
.work-badge {
  position: absolute; top: 10px; left: 10px;
  padding: 3px 10px; background: var(--grad-main); color: #fff;
  font-size: 11px; font-weight: 700; border-radius: 999px; letter-spacing: 1px;
}
.work-rank {
  position: absolute; top: 10px; right: 10px;
  width: 26px; height: 26px; border-radius: 8px;
  background: rgba(0,0,0,.5); backdrop-filter: blur(6px);
  color: #fff; font-size: 13px; font-weight: 800;
  display: flex; align-items: center; justify-content: center;
}
.work-body { padding: 16px; flex: 1; display: flex; flex-direction: column; }
.work-cat { font-size: 12px; color: var(--c-accent); font-weight: 600; margin-bottom: 6px; }
.work-title { font-size: 16px; font-weight: 700; margin-bottom: 8px; }
.work-desc {
  font-size: 13px; color: var(--c-text-sub); line-height: 1.65;
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden;
}

/* ====== 榜单 ====== */
.rank-tabs { display: flex; justify-content: center; gap: 8px; margin-bottom: 30px; }
.rank-tab {
  padding: 8px 22px; border-radius: 999px; font-size: 14px; font-weight: 600;
  color: var(--c-text-sub); background: var(--c-surface); border: 1px solid var(--c-line);
  transition: all .2s;
}
.rank-tab.active { background: var(--grad-main); color: #fff; border-color: transparent; box-shadow: 0 4px 16px rgba(139,92,246,.4); }
.rank-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.rank-card {
  background: var(--c-surface); border: 1px solid var(--c-line);
  border-radius: var(--radius-lg); padding: 24px;
}
.rank-card h3 {
  font-size: 16px; font-weight: 700; margin-bottom: 4px;
  display: flex; align-items: center; gap: 8px;
}
.rank-card h3 .sub { font-size: 11px; color: var(--c-text-mute); font-weight: 400; letter-spacing: 1px; }
.rank-item {
  display: flex; align-items: center; gap: 12px;
  padding: 14px 0; border-bottom: 1px dashed var(--c-line);
}
.rank-item:last-child { border-bottom: none; }
.rank-no {
  width: 28px; height: 28px; border-radius: 8px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 800;
  background: var(--c-surface-2); color: var(--c-text-sub);
}
.rank-item:nth-child(1) .rank-no { background: var(--grad-main); color: #fff; }
.rank-item:nth-child(2) .rank-no { background: linear-gradient(135deg,#f472b6,#fb923c); color: #fff; }
.rank-item:nth-child(3) .rank-no { background: linear-gradient(135deg,#facc15,#f97316); color: #fff; }
.rank-info { flex: 1; min-width: 0; }
.rank-name { font-size: 14px; font-weight: 600; }
.rank-meta { font-size: 12px; color: var(--c-text-mute); }
.rank-val { font-size: 14px; font-weight: 700; color: var(--c-accent); font-variant-numeric: tabular-nums; }

/* ====== 场景分类 ====== */
.cat-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.cat-item {
  background: var(--c-surface); border: 1px solid var(--c-line);
  border-radius: var(--radius); padding: 26px 16px; text-align: center;
  transition: transform .2s, border-color .2s; cursor: pointer;
}
.cat-item:hover { transform: translateY(-4px); border-color: rgba(139,92,246,.5); }
.cat-emoji {
  width: 52px; height: 52px; margin: 0 auto 12px; border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(99,102,241,.15);
}
.cat-emoji svg { width: 26px; height: 26px; stroke: var(--c-accent); fill: none; stroke-width: 1.8; }
.cat-item:nth-child(2) .cat-emoji { background: rgba(244,114,182,.15); }
.cat-item:nth-child(2) .cat-emoji svg { stroke: var(--c-accent-2); }
.cat-item:nth-child(3) .cat-emoji { background: rgba(34,211,238,.15); }
.cat-item:nth-child(3) .cat-emoji svg { stroke: var(--c-accent); }
.cat-item:nth-child(4) .cat-emoji { background: rgba(74,222,128,.15); }
.cat-item:nth-child(4) .cat-emoji svg { stroke: #4ade80; }
.cat-item:nth-child(5) .cat-emoji { background: rgba(250,204,21,.15); }
.cat-item:nth-child(5) .cat-emoji svg { stroke: #facc15; }
.cat-item h4 { font-size: 16px; font-weight: 700; margin-bottom: 4px; }
.cat-item p { font-size: 12px; color: var(--c-text-mute); }

/* ====== CTA ====== */
.cta-final {
  position: relative; text-align: center; padding: 100px 0;
  background:
    radial-gradient(ellipse 60% 60% at 50% 50%, rgba(139,92,246,.25), transparent 70%),
    var(--c-bg-2);
  border-top: 1px solid var(--c-line);
  overflow: hidden;
}
.cta-final h2 { font-size: clamp(28px, 4vw, 44px); font-weight: 900; margin-bottom: 14px; }
.cta-final h2 .grad { background: var(--grad-main); -webkit-background-clip:text; background-clip:text; -webkit-text-fill-color: transparent; }
.cta-final p { font-size: 16px; color: var(--c-text-sub); margin-bottom: 32px; }
.cta-final .btn-primary { font-size: 17px; padding: 16px 48px; }

/* ====== Footer ====== */
.site-footer { background: #060a1c; color: var(--c-text-mute); padding: 40px 0; font-size: 13px; border-top: 1px solid var(--c-line); }
.footer-inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 20px; align-items: center; }
.footer-links { display: flex; gap: 20px; flex-wrap: wrap; }
.footer-links a { padding: 6px 4px; transition: color .2s; }
.footer-links a:hover { color: #fff; }

/* ====== 滚动揭示 ====== */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ====== 响应式 ====== */
@media (max-width: 960px) {
  .hero-grid { grid-template-columns: 1fr; gap: 50px; }
  .phone-wrap { order: -1; }
  .phone { width: 240px; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .work-grid { grid-template-columns: repeat(2, 1fr); }
  .rank-grid { grid-template-columns: 1fr; }
  .cat-grid { grid-template-columns: repeat(3, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 30px; }
}
@media (max-width: 720px) {
  .nav-links, .nav-download { display: none; }
  .hamburger { display: flex; }
  .nav-links.mobile-open {
    display: flex; position: absolute; top: 68px; left: 0; right: 0;
    flex-direction: column; background: var(--c-bg-2);
    padding: 18px 24px; gap: 16px; border-bottom: 1px solid var(--c-line);
  }
  .section { padding: 64px 0; }
  .hero { padding: 110px 0 60px; }
  .feature-grid { grid-template-columns: 1fr; }
  .cat-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-meta { gap: 10px; }
}