/* 爱搬砖官网样式 —— 单文件，无外部依赖 */
:root {
  --brand: #E6392B;
  --brand-dark: #C42A1E;
  --ink: #1F2329;
  --ink-2: #4E5969;
  --ink-3: #86909C;
  --line: #E5E6EB;
  --bg: #FFFFFF;
  --bg-2: #F7F8FA;
  --radius: 16px;
  --shadow: 0 8px 30px rgba(16, 24, 40, .08);
  --max: 1120px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

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

/* 顶部导航 */
header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav { display: flex; align-items: center; height: 88px; gap: 28px; }
.brand { display: flex; align-items: center; gap: 14px; font-weight: 700; font-size: 25px; letter-spacing: .5px; }
.brand img { width: 64px; height: 64px; border-radius: 0; display: block; }
.nav-links { display: flex; gap: 26px; margin-left: auto; font-size: 15px; color: var(--ink-2); }
.nav-links a:hover { color: var(--brand); }
.nav-cta {
  background: var(--brand); color: #fff; padding: 9px 20px; border-radius: 999px;
  font-size: 15px; font-weight: 600; white-space: nowrap;
}
.nav-cta:hover { background: var(--brand-dark); }

/* 首屏 */
.hero { padding: 84px 0 72px; background: linear-gradient(180deg, #FFF7F6 0%, #FFFFFF 62%); }
.hero-grid { display: grid; grid-template-columns: 1.08fr .92fr; gap: 56px; align-items: center; }
.tag {
  display: inline-flex; align-items: center; gap: 8px;
  background: #FFECEA; color: var(--brand); font-size: 13px; font-weight: 600;
  padding: 6px 14px; border-radius: 999px; margin-bottom: 20px;
}
h1 { font-size: 46px; line-height: 1.25; letter-spacing: -1px; }
h1 em { color: var(--brand); font-style: normal; }
.hero p.lead { margin-top: 20px; font-size: 18px; color: var(--ink-2); max-width: 540px; }
.hero-actions { display: flex; gap: 14px; margin-top: 34px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 26px; border-radius: 999px; font-size: 16px; font-weight: 600;
  border: 1px solid transparent; cursor: pointer;
}
.btn-primary { background: var(--brand); color: #fff; box-shadow: 0 8px 20px rgba(230, 57, 43, .24); }
.btn-primary:hover { background: var(--brand-dark); }
.btn-ghost { background: #fff; color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--brand); color: var(--brand); }
.hero-note { margin-top: 18px; font-size: 14px; color: var(--ink-3); }

.hero-card {
  background: #fff; border-radius: 24px; border: 1px solid var(--line);
  box-shadow: var(--shadow); padding: 22px;
}
.hero-card .phone-frame {
  border-radius: 18px; overflow: hidden; background: var(--bg-2);
  border: 1px solid var(--line); padding: 16px; display: grid; gap: 10px;
}
.mock-row { height: 14px; border-radius: 7px; background: #ECEFF3; }
.mock-row.w60 { width: 60%; }
.mock-row.w80 { width: 80%; }
.mock-card { background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 12px; display: grid; gap: 8px; }
.mock-card .mock-row { background: #F2F3F5; }
.mock-chip { display: inline-block; font-size: 12px; color: var(--brand); background: #FFECEA; padding: 2px 8px; border-radius: 6px; }

/* 通用区块 */
section { padding: 72px 0; }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 44px; }
.section-head h2 { font-size: 32px; letter-spacing: -.5px; }
.section-head p { margin-top: 12px; color: var(--ink-2); font-size: 16px; }
.kicker { color: var(--brand); font-weight: 700; font-size: 14px; letter-spacing: 2px; text-transform: uppercase; }

.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px; transition: .18s ease;
}
.card:hover { box-shadow: var(--shadow); transform: translateY(-2px); border-color: #F3C9C4; }
.card h3 { font-size: 19px; margin-bottom: 10px; }
.card p { color: var(--ink-2); font-size: 15px; }
.card .ico {
  width: 44px; height: 44px; border-radius: 12px; background: #FFECEA; color: var(--brand);
  display: grid; place-items: center; font-size: 22px; margin-bottom: 16px;
}

/* 场景 */
.scene { background: var(--bg-2); }
.scene-list { display: grid; gap: 16px; }
.scene-item {
  display: grid; grid-template-columns: 64px 1fr; gap: 18px; align-items: start;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px;
}
.scene-item .step {
  width: 44px; height: 44px; border-radius: 12px; background: var(--brand); color: #fff;
  display: grid; place-items: center; font-weight: 700; font-size: 18px;
}

/* 价格 */
.price-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; align-items: stretch; }
.price {
  background: #fff; border: 1px solid var(--line); border-radius: 20px; padding: 30px 26px;
  display: flex; flex-direction: column; gap: 8px;
}
.price.featured { border-color: var(--brand); box-shadow: 0 12px 36px rgba(230, 57, 43, .14); position: relative; }
.price.featured::after {
  content: "推荐"; position: absolute; top: -13px; left: 26px; background: var(--brand); color: #fff;
  font-size: 12px; font-weight: 700; padding: 3px 12px; border-radius: 999px;
}
.price .amount { font-size: 38px; font-weight: 800; letter-spacing: -1px; }
.price .amount small { font-size: 15px; font-weight: 500; color: var(--ink-3); }
.price ul { list-style: none; display: grid; gap: 10px; margin: 14px 0 22px; font-size: 15px; color: var(--ink-2); }
.price li::before { content: "✓"; color: var(--brand); font-weight: 700; margin-right: 8px; }
.price .btn { margin-top: auto; width: 100%; }

/* 下载 */
.dl-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.dl-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; text-align: center; }
.dl-card .platform { font-size: 17px; font-weight: 700; margin: 14px 0 6px; }
.dl-card .meta { font-size: 13px; color: var(--ink-3); margin-bottom: 18px; }
.dl-card .btn { width: 100%; }
.dl-card.disabled { opacity: .62; }

/* CTA */
.cta {
  background: linear-gradient(135deg, #E6392B, #B31F16); color: #fff;
  border-radius: 24px; padding: 54px 40px; text-align: center;
}
.cta h2 { font-size: 32px; }
.cta p { margin-top: 12px; opacity: .92; font-size: 16px; }
.cta .btn { margin-top: 26px; background: #fff; color: var(--brand); }

/* 页脚 */
footer { border-top: 1px solid var(--line); padding: 42px 0 34px; color: var(--ink-3); font-size: 14px; background: #fff; }
.foot-grid { display: flex; justify-content: space-between; gap: 30px; flex-wrap: wrap; }
.foot-links { display: flex; gap: 22px; flex-wrap: wrap; }
.foot-links a:hover { color: var(--brand); }
.foot-note { margin-top: 22px; padding-top: 18px; border-top: 1px solid var(--line); display: flex; gap: 18px; flex-wrap: wrap; }

/* 内容页（隐私/协议）*/
.doc { padding: 56px 0 80px; }
.doc h1 { font-size: 30px; margin-bottom: 8px; }
.doc .updated { color: var(--ink-3); font-size: 14px; margin-bottom: 30px; }
.doc h2 { font-size: 20px; margin: 32px 0 10px; }
.doc p, .doc li { color: var(--ink-2); font-size: 15.5px; }
.doc ul { padding-left: 22px; margin: 10px 0; display: grid; gap: 6px; }

@media (max-width: 900px) {
  .hero { padding: 56px 0 44px; }
  h1 { font-size: 34px; }
  .hero-grid, .grid-3, .grid-2, .price-grid, .dl-grid { grid-template-columns: 1fr; }
  .nav-links { display: none; }
  section { padding: 52px 0; }
  .cta { padding: 40px 24px; }
}
/* 用户 2026-11-03：首屏右侧改为 App 真机界面截图（不再是灰色骨架示意图） */.hero-card { display: flex; justify-content: center; align-items: center; }.hero-shot {  display: block;  width: 100%;  max-width: 520px;  height: auto;  border-radius: 26px;  border: 1px solid #F0E4E2;  box-shadow: 0 20px 46px rgba(226, 43, 34, .14), 0 2px 8px rgba(17, 24, 39, .05);  background: #fff;}

/* 用户 2026-11-03：功能卡图标改最简洁线性图标 + 卡片自适应排布（7 张） */
.card .ico { color: var(--brand); }
.card .ico svg { width: 24px; height: 24px; display: block; }
@media (min-width: 900px) {
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 899px) and (min-width: 560px) {
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 559px) {
  .grid-3 { grid-template-columns: 1fr; }
}

/* 用户 2026-11-03：功能卡图标改为「标题内联 20px 小图标」，去掉浅红底块 */
.card h3.card-h {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 18px;
  margin-bottom: 10px;
}
.card h3.card-h .ico {
  width: 20px;
  height: 20px;
  margin: 0;
  padding: 0;
  border-radius: 0;
  background: transparent;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--brand);
  flex: none;
}
.card h3.card-h .ico svg { width: 20px; height: 20px; display: block; }