/* 阿莱录屏 · 介绍页样式（蓝白） */
:root {
  --blue: #2563eb;
  --blue-dark: #1d4ed8;
  --blue-deep: #16264a;
  --blue-soft: #eaf1ff;
  --ink: #0f1b33;
  --text: #2b3550;
  --muted: #66718c;
  --line: #e3eaf7;
  --bg: #ffffff;
  --bg-soft: #f6f9ff;
  --green: #0f8c46;
  --orange: #e07a1f;
  --radius: 18px;
  --shadow-sm: 0 2px 12px rgba(20, 38, 80, .06);
  --shadow: 0 14px 40px rgba(20, 38, 80, .10);
  --max: 1140px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: "Microsoft YaHei", "PingFang SC", -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.75;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--blue); text-decoration: none; }
img { max-width: 100%; display: block; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 24px; }

/* ---------------------------------------------------------------- 导航 */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, .86);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .2s, box-shadow .2s;
}
.nav.scrolled { border-bottom-color: var(--line); box-shadow: 0 4px 20px rgba(20, 38, 80, .05); }
.nav-inner {
  height: 66px;
  display: flex; align-items: center; gap: 26px;
}
.logo { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 17px; color: var(--ink); }
.logo-mark {
  width: 34px; height: 34px; border-radius: 10px;
  background: linear-gradient(135deg, #3b82f6, #1d4ed8);
  color: #fff; display: grid; place-items: center;
  font-size: 16px; font-weight: 700;
  box-shadow: 0 6px 16px rgba(37, 99, 235, .3);
}
.nav-links { display: flex; gap: 24px; margin-left: 12px; }
.nav-links a { color: var(--muted); font-size: 14px; }
.nav-links a:hover { color: var(--blue); }
.nav-right { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.nav-toggle {
  display: none; border: 1px solid var(--line); background: #fff;
  border-radius: 9px; width: 38px; height: 38px; font-size: 17px; cursor: pointer;
}

/* ---------------------------------------------------------------- 按钮 */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 11px 22px;
  border-radius: 11px;
  font-size: 14.5px;
  font-weight: 600;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--text);
  cursor: pointer;
  transition: transform .16s, box-shadow .16s, background .16s, border-color .16s;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); box-shadow: var(--shadow-sm); }
.btn-primary {
  background: linear-gradient(135deg, #3b82f6, #1d4ed8);
  border-color: transparent;
  color: #fff;
  box-shadow: 0 10px 24px rgba(37, 99, 235, .28);
}
.btn-primary:hover { box-shadow: 0 14px 30px rgba(37, 99, 235, .34); }
.btn-ghost { background: rgba(255, 255, 255, .7); }
.btn-lg { padding: 13px 28px; font-size: 15.5px; border-radius: 13px; }
.btn-sm { padding: 7px 14px; font-size: 13px; border-radius: 9px; }

/* ---------------------------------------------------------------- Hero */
.hero {
  position: relative;
  padding: 72px 0 60px;
  overflow: hidden;
  background:
    radial-gradient(900px 460px at 78% 8%, #e4eeff 0%, rgba(228, 238, 255, 0) 62%),
    radial-gradient(700px 420px at 8% 22%, #eef5ff 0%, rgba(238, 245, 255, 0) 60%),
    #fff;
}
.hero::before {
  content: "";
  position: absolute; inset: 0;
  background-image: linear-gradient(rgba(37, 99, 235, .045) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(37, 99, 235, .045) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(700px 380px at 62% 40%, #000 10%, transparent 78%);
  pointer-events: none;
}
.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.02fr 1.18fr;
  gap: 46px;
  align-items: center;
}
/* 防止长截图把网格列撑宽导致横向溢出 */
.hero-inner > * { min-width: 0; }
.hero-shot img, .shot-card img { width: 100%; height: auto; }
.pill {
  display: inline-flex; align-items: center; gap: 8px;
  background: #fff;
  border: 1px solid #d9e5ff;
  color: var(--blue-dark);
  padding: 5px 13px 5px 7px;
  border-radius: 30px;
  font-size: 12.5px;
  font-weight: 600;
  box-shadow: var(--shadow-sm);
}
.pill i {
  font-style: normal;
  background: var(--blue-soft);
  color: var(--blue);
  border-radius: 20px;
  padding: 2px 9px;
  font-size: 11.5px;
}
.hero h1 {
  font-size: 43px;
  line-height: 1.24;
  letter-spacing: -.6px;
  color: var(--ink);
  margin: 18px 0 16px;
  font-weight: 800;
}
.hero h1 em {
  font-style: normal;
  background: linear-gradient(120deg, #2563eb, #38bdf8);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero .lead { font-size: 16px; color: var(--muted); max-width: 460px; }
.hero-cta { display: flex; gap: 12px; margin: 26px 0 20px; flex-wrap: wrap; }
.hero-note { font-size: 12.5px; color: #90a0bd; display: flex; align-items: center; gap: 8px; }
.hero-note span { color: #b9c5da; }

.hero-facts {
  display: flex; gap: 30px; margin-top: 30px; padding-top: 22px;
  border-top: 1px dashed #dde7f8;
}
.fact b { display: block; font-size: 20px; color: var(--ink); letter-spacing: .3px; }
.fact span { font-size: 12.5px; color: var(--muted); }

/* Hero 截图 */
.hero-shot { position: relative; }
.shot-frame {
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 30px 70px rgba(20, 38, 80, .18), 0 0 0 1px rgba(20, 38, 80, .06);
  background: #fff;
  transform: perspective(1400px) rotateY(-3deg) rotateX(1.4deg);
  transition: transform .5s;
}
.shot-frame:hover { transform: perspective(1400px) rotateY(0) rotateX(0); }
.shot-bar {
  height: 30px; background: #f1f5fc;
  display: flex; align-items: center; gap: 6px; padding: 0 12px;
  border-bottom: 1px solid #e6edf9;
}
.shot-bar i { width: 9px; height: 9px; border-radius: 50%; background: #d6deee; }
.shot-bar i:nth-child(1) { background: #ffbdb5; }
.shot-bar i:nth-child(2) { background: #ffe0a3; }
.shot-bar i:nth-child(3) { background: #b6e5c2; }
.float-card {
  position: absolute;
  background: rgba(255, 255, 255, .96);
  backdrop-filter: blur(8px);
  border: 1px solid #e6edf9;
  border-radius: 13px;
  box-shadow: 0 16px 34px rgba(20, 38, 80, .14);
  padding: 10px 14px;
  font-size: 12.5px;
  color: var(--text);
  display: flex; align-items: center; gap: 9px;
}
.float-card .dot {
  width: 8px; height: 8px; border-radius: 50%; background: #ef4444;
  box-shadow: 0 0 0 4px rgba(239, 68, 68, .16);
}
.float-card b { color: var(--ink); }
.fc-1 { left: -26px; bottom: 58px; }
.fc-2 { right: -18px; top: 46px; }

/* ---------------------------------------------------------------- 通用区块 */
section { padding: 76px 0; }
.sec-soft { background: var(--bg-soft); }
.sec-head { text-align: center; max-width: 640px; margin: 0 auto 46px; }
.sec-tag {
  display: inline-block;
  color: var(--blue);
  background: var(--blue-soft);
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: .5px;
  margin-bottom: 14px;
}
.sec-head h2 {
  font-size: 30px;
  color: var(--ink);
  letter-spacing: -.4px;
  line-height: 1.35;
  font-weight: 800;
}
.sec-head p { color: var(--muted); margin-top: 12px; font-size: 15px; }

/* 特性四宫格 */
.features { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.f-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 22px;
  box-shadow: var(--shadow-sm);
  transition: transform .22s, box-shadow .22s, border-color .22s;
}
.f-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: #cfe0ff; }
.f-icon {
  width: 46px; height: 46px; border-radius: 13px;
  display: grid; place-items: center;
  background: var(--blue-soft);
  color: var(--blue);
  font-size: 21px;
  margin-bottom: 16px;
}
.f-card h3 { font-size: 16.5px; color: var(--ink); margin-bottom: 8px; }
.f-card p { font-size: 13.5px; color: var(--muted); line-height: 1.8; }

/* 运镜演示 */
.demo-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; align-items: stretch; }
.demo-stage {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 22px; box-shadow: var(--shadow-sm);
}
.demo-stage h3 { font-size: 15px; color: var(--ink); margin-bottom: 4px; }
.demo-stage .cap { font-size: 12.5px; color: var(--muted); margin-bottom: 14px; }
.screen {
  position: relative; border-radius: 12px; overflow: hidden;
  background: #f3f6fd; border: 1px solid #e6edf9;
  aspect-ratio: 16 / 10;
}
.screen .mock {
  position: absolute; inset: 0;
  background:
    linear-gradient(#dfe7f7 0 0) 18px 18px / 42% 10px no-repeat,
    linear-gradient(#e7eefb 0 0) 18px 44px / 66% 8px no-repeat,
    linear-gradient(#e7eefb 0 0) 18px 62px / 54% 8px no-repeat,
    linear-gradient(#e7eefb 0 0) 18px 80px / 60% 8px no-repeat,
    linear-gradient(#e7eefb 0 0) 18px 98px / 38% 8px no-repeat,
    #fff;
}
.screen .btn-mock {
  position: absolute; left: 18px; bottom: 18px;
  width: 92px; height: 30px; border-radius: 7px;
  background: linear-gradient(135deg, #3b82f6, #1d4ed8);
  box-shadow: 0 6px 14px rgba(37, 99, 235, .3);
}
.screen .zoom-frame {
  position: absolute; border: 2px solid #2563eb; border-radius: 10px;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, .12);
}
.screen .ring {
  position: absolute; border: 3px solid var(--orange); border-radius: 50%;
  transform: rotate(-8deg);
  clip-path: polygon(0 0, 100% 0, 100% 72%, 78% 72%, 78% 100%, 0 100%);
}
.screen .cursor {
  position: absolute; width: 16px; height: 16px;
  border-left: 3px solid #12203c; border-top: 3px solid #12203c;
  transform: rotate(-22deg);
  filter: drop-shadow(0 1px 2px rgba(0, 0, 0, .25));
}
.tag-float {
  position: absolute; background: #12203c; color: #fff;
  font-size: 11px; padding: 3px 8px; border-radius: 6px;
  letter-spacing: .3px;
}

.flow {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px;
  margin-top: 24px;
}
.flow-step {
  background: #fff; border: 1px solid var(--line); border-radius: 14px;
  padding: 18px 20px; box-shadow: var(--shadow-sm);
}
.flow-step .n {
  width: 24px; height: 24px; border-radius: 8px;
  background: var(--blue); color: #fff;
  display: grid; place-items: center;
  font-size: 12.5px; font-weight: 700; margin-bottom: 10px;
}
.flow-step h4 { font-size: 14.5px; color: var(--ink); margin-bottom: 4px; }
.flow-step p { font-size: 13px; color: var(--muted); line-height: 1.7; }

/* 界面预览 */
.shots { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.shot-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; box-shadow: var(--shadow-sm);
  transition: transform .22s, box-shadow .22s;
}
.shot-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.shot-card img { width: 100%; }
.shot-meta { padding: 14px 18px; }
.shot-meta b { color: var(--ink); font-size: 14.5px; }
.shot-meta span { display: block; color: var(--muted); font-size: 12.5px; margin-top: 2px; }

/* 教程 */
.steps { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.step {
  display: flex; gap: 16px;
  background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius); padding: 22px;
  box-shadow: var(--shadow-sm);
}
.step-no {
  flex: 0 0 40px; height: 40px; border-radius: 12px;
  background: linear-gradient(135deg, #eff5ff, #dbe9ff);
  color: var(--blue-dark);
  display: grid; place-items: center;
  font-weight: 800; font-size: 16px;
}
.step h3 { font-size: 15.5px; color: var(--ink); margin-bottom: 5px; }
.step p { font-size: 13.5px; color: var(--muted); }

/* 价格 */
.prices { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; align-items: stretch; }
.price {
  position: relative;
  background: #fff; border: 1px solid var(--line); border-radius: 20px;
  padding: 30px 26px 26px;
  box-shadow: var(--shadow-sm);
  display: flex; flex-direction: column;
  transition: transform .22s, box-shadow .22s, border-color .22s;
}
.price:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.price.hot {
  border-color: #bcd3ff;
  box-shadow: 0 20px 46px rgba(37, 99, 235, .16);
  background: linear-gradient(180deg, #fbfdff, #fff);
}
.price-badge {
  position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
  background: linear-gradient(135deg, #3b82f6, #1d4ed8);
  color: #fff; font-size: 12px; font-weight: 700;
  padding: 4px 14px; border-radius: 20px;
  box-shadow: 0 8px 18px rgba(37, 99, 235, .3);
}
.price h3 { font-size: 17px; color: var(--ink); }
.price .amount { margin: 10px 0 2px; color: var(--ink); }
.price .amount b { font-size: 36px; letter-spacing: -.5px; }
.price .amount b i { font-style: normal; font-size: 19px; margin-right: 2px; }
.price .amount span { color: var(--muted); font-size: 13px; }
.price .desc { color: var(--muted); font-size: 13px; margin-bottom: 16px; }
.price ul { list-style: none; display: grid; gap: 9px; margin-bottom: 22px; }
.price li { font-size: 13.5px; color: var(--text); padding-left: 20px; position: relative; }
.price li::before {
  content: "✓";
  position: absolute; left: 0; top: 0;
  color: var(--blue); font-weight: 700;
}
.price .btn { margin-top: auto; width: 100%; }

/* FAQ */
.faq { max-width: 800px; margin: 0 auto; display: grid; gap: 12px; }
details.item {
  background: #fff; border: 1px solid var(--line); border-radius: 14px;
  padding: 16px 20px; box-shadow: var(--shadow-sm);
}
details.item[open] { border-color: #cfe0ff; }
details.item summary {
  cursor: pointer; list-style: none;
  font-weight: 600; color: var(--ink); font-size: 14.5px;
  display: flex; justify-content: space-between; align-items: center; gap: 12px;
}
details.item summary::-webkit-details-marker { display: none; }
details.item summary::after {
  content: "+"; color: var(--blue); font-size: 18px; font-weight: 400;
  transition: transform .2s;
}
details.item[open] summary::after { transform: rotate(45deg); }
details.item p { color: var(--muted); font-size: 13.8px; margin-top: 10px; }

/* 更新日志 */
.log { max-width: 760px; margin: 0 auto; position: relative; padding-left: 26px; }
.log::before {
  content: ""; position: absolute; left: 6px; top: 8px; bottom: 8px;
  width: 2px; background: linear-gradient(#dbe7fb, #eef4ff);
}
.log-item { position: relative; padding-bottom: 26px; }
.log-item:last-child { padding-bottom: 0; }
.log-item::before {
  content: ""; position: absolute; left: -25px; top: 8px;
  width: 10px; height: 10px; border-radius: 50%;
  background: #fff; border: 2px solid var(--blue);
}
.log-item h4 { font-size: 15px; color: var(--ink); display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.log-item h4 span { font-size: 12px; color: var(--muted); font-weight: 400; }
.log-item ul { margin: 8px 0 0 18px; color: var(--muted); font-size: 13.5px; }
.log-item li { margin-bottom: 3px; }

/* 底部 CTA */
.cta-band {
  background: linear-gradient(120deg, #16264a, #1d4ed8 78%);
  color: #fff;
  border-radius: 24px;
  padding: 46px 44px;
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
  flex-wrap: wrap;
  box-shadow: 0 24px 60px rgba(22, 38, 74, .26);
}
.cta-band h2 { font-size: 26px; letter-spacing: -.3px; }
.cta-band p { color: rgba(255, 255, 255, .76); font-size: 14px; margin-top: 6px; }
.cta-band .btn-white {
  background: #fff; color: var(--blue-dark); border-color: transparent;
  box-shadow: 0 12px 26px rgba(0, 0, 0, .18);
}

/* 页脚 */
footer {
  background: #0d1830;
  color: rgba(255, 255, 255, .62);
  padding: 46px 0 26px;
  font-size: 13px;
}
.foot-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 30px; }
footer .logo { color: #fff; margin-bottom: 12px; }
footer h5 { color: #fff; font-size: 13.5px; margin-bottom: 10px; font-weight: 600; }
footer a { color: rgba(255, 255, 255, .62); }
footer a:hover { color: #fff; }
.foot-list { display: grid; gap: 6px; }
.foot-bottom {
  margin-top: 32px; padding-top: 18px;
  border-top: 1px solid rgba(255, 255, 255, .1);
  display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap;
  font-size: 12.5px; color: rgba(255, 255, 255, .4);
}

/* 浮动购买条 */
.float-buy {
  position: fixed; right: 22px; bottom: 24px; z-index: 60;
  background: linear-gradient(135deg, #3b82f6, #1d4ed8);
  color: #fff; border-radius: 30px;
  padding: 12px 22px;
  font-size: 14px; font-weight: 600;
  box-shadow: 0 14px 32px rgba(37, 99, 235, .38);
  display: flex; align-items: center; gap: 8px;
  transition: transform .18s, box-shadow .18s;
}
.float-buy:hover { transform: translateY(-2px); color: #fff; box-shadow: 0 18px 40px rgba(37, 99, 235, .46); }

/* 进场动画（无 JS 时内容始终可见） */
.reveal { transition: opacity .6s ease, transform .6s ease; }
html.js .reveal { opacity: 0; transform: translateY(18px); }
html.js .reveal.in { opacity: 1; transform: none; }

/* 响应式 */
@media (max-width: 1000px) {
  .hero-inner { grid-template-columns: 1fr; gap: 36px; }
  .hero h1 { font-size: 34px; }
  .features { grid-template-columns: repeat(2, 1fr); }
  .demo-grid, .shots, .steps, .prices { grid-template-columns: 1fr; }
  .flow { grid-template-columns: 1fr; }
  .foot-grid { grid-template-columns: 1fr 1fr; }
  .shot-frame { transform: none; }
  .fc-1, .fc-2 { display: none; }
}
@media (max-width: 760px) {
  section { padding: 54px 0; }
  .nav-links { display: none; }
  .nav-toggle { display: grid; place-items: center; }
  .nav-links.open {
    display: flex; position: absolute; top: 66px; left: 0; right: 0;
    flex-direction: column; gap: 0;
    background: #fff; border-bottom: 1px solid var(--line);
    padding: 8px 24px 16px;
    box-shadow: 0 16px 30px rgba(20, 38, 80, .08);
  }
  .nav-links.open a { padding: 10px 0; border-bottom: 1px solid #f2f6fd; }
  .hero { padding: 46px 0 40px; }
  .hero h1 { font-size: 29px; }
  .hero-facts { gap: 20px; flex-wrap: wrap; }
  .sec-head h2 { font-size: 24px; }
  .features { grid-template-columns: 1fr; }
  .cta-band { padding: 30px 24px; }
  .foot-grid { grid-template-columns: 1fr; }
  .float-buy { right: 14px; bottom: 14px; padding: 10px 18px; font-size: 13px; }
}