/* ============ 喵趣漫画 · 官网落地页样式 ============ */
:root {
  --primary: #FF7A1A;
  --primary-deep: #F26A08;
  --primary-light: #FFA14D;
  --primary-soft: #FFF1E4;
  --dark: #232630;
  --dark-2: #31364A;
  --text: #34383F;
  --muted: #7A7F88;
  --gray: #9AA0A8;
  --soft-gray: #D7DAE0;
  --light-muted: #C9CDD6;
  --star: #FFB400;
  --item-bg: #FBF6EF;
  --border: #F2E4D4;
  --bg: #FFFDF9;
  --card: #FFFFFF;
  --radius: 16px;
  --shadow-sm: 0 2px 10px rgba(35, 38, 48, .06);
  --shadow-hover: 0 14px 30px rgba(255, 122, 26, .16);
  --maxw: 1200px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 76px; }

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font-family: inherit; border: none; background: none; cursor: pointer; }

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.section { padding: 88px 0; }
.section-tint { background: var(--primary-soft); }

/* ============ 顶部导航 ============ */
.header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(255, 253, 249, .92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: box-shadow .3s, border-color .3s;
}
.header.scrolled { border-color: var(--border); box-shadow: 0 4px 16px rgba(35, 38, 48, .08); }
.nav { display: flex; align-items: center; height: 72px; gap: 20px; }
.logo { font-size: 24px; font-weight: 800; color: var(--dark); letter-spacing: .5px; white-space: nowrap; }
.menu { display: flex; gap: 2px; margin-left: auto; }
.menu a {
  display: block; padding: 8px 11px; font-size: 14px; color: var(--text);
  border-radius: 8px; transition: color .25s, background .25s; white-space: nowrap;
}
.menu a:hover { color: var(--primary); background: var(--primary-soft); }
.nav-btn {
  flex-shrink: 0; font-size: 13px; font-weight: 700; color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--primary-deep));
  padding: 9px 18px; border-radius: 999px;
  box-shadow: 0 4px 12px rgba(255, 122, 26, .35);
  transition: transform .25s, box-shadow .25s;
}
.nav-btn:hover { transform: translateY(-2px); box-shadow: 0 6px 16px rgba(255, 122, 26, .45); }

/* ============ 首屏 Hero ============ */
.hero { padding: 150px 0 90px; background: linear-gradient(180deg, var(--primary-soft), var(--bg)); }
.hero-inner { display: flex; align-items: center; gap: 64px; }
.hero-text { flex: 1; }
.hero h1 { font-size: 44px; line-height: 1.25; font-weight: 800; color: var(--dark); }
.ver-tag {
  display: inline-block; margin-left: 10px; font-size: 15px; font-weight: 700; color: var(--primary);
  background: var(--card); border: 1px solid var(--primary-light); border-radius: 999px;
  padding: 4px 14px; vertical-align: middle;
}
.hero-desc { margin: 20px 0 28px; font-size: 16px; color: var(--muted); max-width: 560px; }
.hero-btns { display: flex; gap: 16px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 15px; font-weight: 700; padding: 14px 30px; border-radius: 999px;
  transition: transform .25s, box-shadow .25s, background .25s, color .25s;
}
.btn-primary { color: #fff; background: linear-gradient(135deg, var(--primary), var(--primary-deep)); box-shadow: 0 8px 20px rgba(255, 122, 26, .35); }
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 12px 26px rgba(255, 122, 26, .45); }
.btn-outline { color: var(--primary); background: var(--card); border: 2px solid var(--primary); box-shadow: 0 4px 12px rgba(255, 122, 26, .12); }
.btn-outline:hover { background: var(--primary); color: #fff; transform: translateY(-3px); box-shadow: 0 10px 22px rgba(255, 122, 26, .35); }
.hero-points { display: flex; flex-wrap: wrap; gap: 10px 18px; margin-top: 26px; }
.hero-points li { display: flex; align-items: center; gap: 6px; font-size: 13px; color: var(--dark); }
.hero-points li::before {
  content: "✓"; width: 18px; height: 18px; border-radius: 50%; background: var(--primary); color: #fff;
  font-size: 11px; display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.hero-pic { flex: 0 0 320px; }
.hero-pic img {
  width: 100%; height: auto; border-radius: 24px; aspect-ratio: 2 / 3;
  background: var(--primary-soft); box-shadow: 0 20px 50px rgba(255, 122, 26, .25);
}

/* ============ 模块标题 ============ */
.sec-head { text-align: center; max-width: 640px; margin: 0 auto 48px; }
.sec-head h2 { font-size: 32px; font-weight: 800; color: var(--dark); }
.sec-head p { margin-top: 10px; font-size: 15px; color: var(--muted); }

/* ============ 作品预览 ============ */
.works-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.work-card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden; transition: transform .3s, box-shadow .3s;
}
.work-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-hover); }
.work-card img { width: 100%; height: auto; background: var(--primary-soft); }
.work-card figcaption { padding: 14px; text-align: center; font-size: 15px; font-weight: 700; color: var(--dark); }

/* ============ 产品介绍 ============ */
.intro-box { max-width: 920px; margin: 0 auto; }
.intro-text { font-size: 16px; color: var(--muted); text-align: center; line-height: 1.9; }
.intro-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 40px; }
.intro-card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 28px 24px; text-align: center; transition: transform .3s, box-shadow .3s;
}
.intro-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-hover); }
.intro-card .icon { font-size: 36px; line-height: 1; }
.intro-card h3 { font-size: 17px; margin: 14px 0 8px; color: var(--dark); }
.intro-card p { font-size: 14px; color: var(--muted); }

/* ============ 核心功能 ============ */
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.feature-card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 32px 26px; transition: transform .3s, box-shadow .3s;
}
.feature-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-hover); }
.feature-card .icon {
  display: inline-flex; width: 56px; height: 56px; align-items: center; justify-content: center;
  font-size: 28px; background: var(--primary-soft); border-radius: 16px; margin-bottom: 18px;
}
.feature-card h3 { font-size: 18px; color: var(--dark); margin-bottom: 10px; }
.feature-card p { font-size: 14px; color: var(--muted); }

/* ============ 优势对比 ============ */
.compare-grid {
  display: grid; grid-template-columns: 1fr 1.25fr 1.25fr;
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-sm);
}
.cmp-head { padding: 16px 20px; text-align: center; font-size: 15px; font-weight: 700; background: var(--dark); color: #fff; }
.cmp-head.cmp-good { background: var(--primary); }
.cmp-item { padding: 16px 20px; font-weight: 700; color: var(--dark); text-align: left; background: var(--item-bg); border-top: 1px solid var(--border); }
.cmp-val { padding: 16px 20px; text-align: center; font-size: 15px; border-top: 1px solid var(--border); }
.cmp-val.cmp-good { color: var(--primary-deep); font-weight: 700; }
.cmp-val.cmp-bad { color: var(--gray); }

/* ============ 平台数据 ============ */
.data { background: linear-gradient(135deg, var(--dark), var(--dark-2)); }
.sec-head.light h2 { color: #fff; }
.sec-head.light p { color: var(--light-muted); }
.data-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 24px; }
.data-item {
  text-align: center; padding: 36px 16px; border-radius: var(--radius);
  background: rgba(255, 255, 255, .06); border: 1px solid rgba(255, 255, 255, .12);
  transition: transform .3s, background .3s;
}
.data-item:hover { transform: translateY(-6px); background: rgba(255, 122, 26, .16); }
.data-item .num { display: block; font-size: 40px; font-weight: 800; color: var(--primary-light); line-height: 1.2; }
.data-item .label { display: block; margin-top: 10px; font-size: 14px; color: var(--soft-gray); }

/* ============ 用户评价 ============ */
.reviews-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.review-card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 26px; transition: transform .3s, box-shadow .3s;
}
.review-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.review-head { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.avatar {
  width: 44px; height: 44px; border-radius: 50%; flex-shrink: 0;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff; font-size: 18px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}
.review-info { display: flex; flex-direction: column; }
.name { font-size: 15px; font-weight: 700; color: var(--dark); }
.stars { color: var(--star); font-size: 14px; letter-spacing: 2px; }
.review-text { font-size: 14px; color: var(--muted); line-height: 1.8; }

/* ============ 版本更新 ============ */
.update-card {
  max-width: 760px; margin: 0 auto; background: var(--card);
  border: 1px solid var(--border); border-radius: var(--radius);
  padding: 36px 40px; box-shadow: var(--shadow-sm);
}
.update-meta {
  display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
  margin-bottom: 22px; padding-bottom: 18px; border-bottom: 1px dashed var(--border);
}
.update-ver { font-size: 20px; font-weight: 800; color: var(--primary-deep); background: var(--primary-soft); border-radius: 10px; padding: 6px 14px; }
.update-date { font-size: 14px; color: var(--muted); }
.update-list li { position: relative; padding: 9px 0 9px 26px; font-size: 15px; color: var(--text); }
.update-list li::before {
  content: ""; position: absolute; left: 6px; top: 17px;
  width: 8px; height: 8px; border-radius: 50%; background: var(--primary);
}

/* ============ FAQ ============ */
.faq-list { max-width: 760px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }
.faq-item { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; transition: box-shadow .3s, border-color .3s; }
.faq-item.open { box-shadow: var(--shadow-sm); border-color: var(--primary-light); }
.faq-q {
  width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 20px 24px; font-size: 16px; font-weight: 700; color: var(--dark); text-align: left;
}
.faq-q .arrow { position: relative; width: 20px; height: 20px; flex-shrink: 0; }
.faq-q .arrow::before, .faq-q .arrow::after {
  content: ""; position: absolute; left: 50%; top: 50%;
  transform: translate(-50%, -50%); background: var(--primary); border-radius: 2px;
  transition: transform .3s, opacity .3s;
}
.faq-q .arrow::before { width: 14px; height: 2px; }
.faq-q .arrow::after { width: 2px; height: 14px; }
.faq-item.open .faq-q .arrow::after { transform: translate(-50%, -50%) rotate(90deg); opacity: 0; }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .35s ease; }
.faq-item.open .faq-a { max-height: 400px; }
.faq-a p { padding: 0 24px 22px; font-size: 14px; color: var(--muted); line-height: 1.8; }

/* ============ 下载区域 ============ */
.download { background: linear-gradient(180deg, var(--primary-soft), var(--bg)); text-align: center; padding: 100px 0; }
.dl-title { font-size: 36px; font-weight: 800; color: var(--dark); }
.dl-meta { font-size: 14px; color: var(--muted); margin: 16px 0 32px; white-space: nowrap; }
.dl-btns { display: flex; gap: 18px; justify-content: center; flex-wrap: wrap; }
.btn-lg { padding: 16px 40px; font-size: 16px; }
.dl-tip {
  display: inline-block; margin-top: 24px; font-size: 14px; color: var(--primary-deep);
  background: var(--card); border: 1px dashed var(--primary-light); border-radius: 999px; padding: 10px 22px;
}

/* ============ 页脚 ============ */
.footer { background: var(--dark); padding: 28px 0; text-align: center; }
.footer p { font-size: 14px; color: var(--light-muted); }
.copy-link { color: #fff; font-weight: 700; text-decoration: none; }
.copy-link:hover { color: var(--primary-light); }

/* ============ 返回顶部 ============ */
.back-top {
  position: fixed; right: 28px; bottom: 36px; z-index: 90;
  width: 48px; height: 48px; border-radius: 50%; font-size: 20px; color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--primary-deep));
  box-shadow: 0 8px 20px rgba(255, 122, 26, .4);
  opacity: 0; visibility: hidden; transform: translateY(16px);
  transition: opacity .3s, transform .3s, visibility .3s;
}
.back-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
.back-top:hover { transform: translateY(-4px); }

/* ============ 响应式：平板 ============ */
@media (max-width: 1024px) {
  .works-grid, .features-grid { grid-template-columns: repeat(2, 1fr); }
  .reviews-grid { grid-template-columns: repeat(2, 1fr); }
  .data-grid { grid-template-columns: repeat(3, 1fr); }
  .menu a { padding: 8px 8px; font-size: 13px; }
  .nav { gap: 12px; }
}

/* ============ 响应式：手机 ============ */
@media (max-width: 768px) {
  html { scroll-padding-top: 62px; }
  .container { padding: 0 20px; }
  .section { padding: 60px 0; }
  .nav { height: 60px; }
  .menu { display: none; }
  .logo { font-size: 20px; }
  .nav-btn { margin-left: auto; font-size: 12px; padding: 8px 14px; }

  .hero { padding: 110px 0 56px; }
  .hero-inner { flex-direction: column; gap: 36px; }
  .hero-text { text-align: center; }
  .hero h1 { font-size: 30px; }
  .ver-tag { font-size: 13px; margin-left: 6px; padding: 3px 10px; }
  .hero-desc { font-size: 15px; margin: 16px auto 24px; }
  .hero-btns { flex-direction: column; width: 100%; max-width: 400px; margin: 0 auto; }
  .hero-btns .btn { width: 100%; }
  .hero-points { justify-content: center; }
  .hero-pic { flex: none; width: 100%; max-width: 320px; margin: 0 auto; }

  .sec-head { margin-bottom: 34px; }
  .sec-head h2 { font-size: 26px; }

  .works-grid { grid-template-columns: 1fr; gap: 20px; }
  .intro-cards { grid-template-columns: 1fr; gap: 16px; }
  .features-grid { grid-template-columns: 1fr; gap: 16px; }
  .reviews-grid { grid-template-columns: 1fr; gap: 16px; }
  .data-grid { grid-template-columns: 1fr 1fr; gap: 14px; }
  .data-item:last-child:nth-child(odd) { grid-column: 1 / -1; }
  .data-item { padding: 26px 12px; }
  .data-item .num { font-size: 30px; }

  .compare-grid { grid-template-columns: 1fr 1fr; }
  .cmp-head { font-size: 14px; padding: 12px 10px; }
  .cmp-head:first-child { grid-column: 1 / -1; }
  .cmp-item { grid-column: 1 / -1; padding: 12px 10px; font-size: 13px; }
  .cmp-val { padding: 12px 10px; font-size: 13px; }
  .cmp-val.cmp-bad { border-left: 1px solid var(--border); }

  .update-card { padding: 24px 20px; }
  .update-ver { font-size: 17px; }
  .update-list li { font-size: 14px; }

  .faq-q { padding: 18px 20px; font-size: 15px; }
  .faq-a p { padding: 0 20px 20px; font-size: 14px; }

  .download { padding: 68px 0; }
  .dl-title { font-size: 28px; }
  .dl-meta { font-size: 12px; margin: 12px 0 24px; }
  .dl-btns { flex-direction: column; width: 100%; gap: 14px; }
  .dl-btns .btn { width: 100%; padding: 15px 20px; font-size: 15px; }
  .dl-tip { font-size: 13px; padding: 8px 16px; }

  .back-top { right: 16px; bottom: 24px; width: 44px; height: 44px; }
}