/* ============================================================
   清新预约 v2 —— 参考微信服务商平台
   浅色对角渐变 · 超大标题 · 毛玻璃卡片 · 极简克制 · logo 蓝
   ============================================================ */
:root {
  --brand: #5090F0;
  --brand-deep: #3D74D6;
  --brand-bg: #EEF4FE;
  --ink: #14243F;
  --text: #4E5969;
  --text-light: #86909C;
  --border: rgba(20, 36, 63, 0.08);
  --card: rgba(255, 255, 255, 0.72);
  --white: #fff;
  --radius: 12px;
  --shadow: 0 6px 24px rgba(20, 36, 63, 0.05);
  --shadow-lg: 0 12px 40px rgba(20, 36, 63, 0.09);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  font-size: 16px;
  line-height: 1.75;
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; transition: color .2s; }
ul { list-style: none; }

.container { max-width: 1180px; margin: 0 auto; padding: 0 28px; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-block;
  padding: 0 26px;
  height: 42px;
  line-height: 40px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 500;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all .2s;
  white-space: nowrap;
}
.btn-primary { background: var(--brand); color: #fff; }
.btn-primary:hover { background: var(--brand-deep); box-shadow: 0 6px 18px rgba(80, 144, 240, .32); }
.btn-ghost {
  border-color: rgba(20, 36, 63, .16);
  color: var(--ink);
  background: rgba(255, 255, 255, .6);
}
.btn-ghost:hover { border-color: var(--brand); color: var(--brand); }
.btn-lg { height: 48px; line-height: 46px; padding: 0 34px; font-size: 16px; }

a:focus-visible, button:focus-visible, summary:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
}

/* ---------- 顶栏（融入渐变，不压边框） ---------- */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, .75);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}
.header .container {
  display: flex;
  align-items: center;
  height: 68px;
  gap: 36px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 19px;
  font-weight: 600;
  color: var(--ink);
}
.logo img { width: 32px; height: 32px; }
.nav { display: flex; gap: 34px; margin-left: auto; }
.nav a { font-size: 15px; color: var(--ink); opacity: .8; }
.nav a:hover { opacity: 1; color: var(--brand); }
.menu-toggle { display: none; }

/* ---------- Hero：对角渐变 + 光束 ---------- */
.hero {
  position: relative;
  overflow: hidden;
  margin-top: -68px;
  padding: 158px 0 96px;
  background:
    radial-gradient(55% 70% at 88% 6%, rgba(129, 122, 235, .16) 0%, transparent 62%),
    radial-gradient(45% 65% at 4% 30%, rgba(78, 205, 176, .14) 0%, transparent 60%),
    linear-gradient(155deg, #EDFAF4 0%, #F4F8FE 48%, #ECECFA 100%);
}
/* 对角光束 */
.hero::before, .hero::after {
  content: "";
  position: absolute;
  top: -20%;
  height: 150%;
  width: 26%;
  background: linear-gradient(rgba(255, 255, 255, .5), rgba(255, 255, 255, 0));
  transform: skewX(-18deg);
  pointer-events: none;
}
.hero::before { right: 14%; }
.hero::after { right: -6%; width: 18%; opacity: .7; }

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 48px;
  align-items: center;
}
.hero h1 {
  font-size: 50px;
  line-height: 1.42;
  color: var(--ink);
  font-weight: 600;
  letter-spacing: .02em;
  margin-bottom: 20px;
  text-wrap: balance;
}
.hero-sub {
  font-size: 17px;
  color: var(--text);
  letter-spacing: .02em;
  max-width: 32em;
  margin-bottom: 38px;
}
.hero-actions { display: flex; gap: 16px; align-items: center; }
.hero-note { font-size: 13.5px; color: var(--text-light); margin-top: 18px; }

/* Hero 右侧：简洁码卡（锚定容器右缘，与导航按钮同轴） */
.hero-qr {
  justify-self: end;
  align-self: center;
  text-align: center;
  background: #fff;
  border: 1px solid rgba(255, 255, 255, .9);
  border-radius: 22px;
  box-shadow: 0 10px 40px rgba(20, 36, 63, .08);
  padding: 30px 34px 22px;
}
.hero-qr img {
  width: 224px;
  height: 224px;
  margin: 0 auto 16px;
  border-radius: 6px;
}
.hero-qr b {
  display: block;
  font-size: 16px;
  color: var(--ink);
  font-weight: 600;
  letter-spacing: .02em;
}
.hero-qr i {
  font-style: normal;
  font-size: 13.5px;
  color: var(--text-light);
}
.hero-qr .alt {
  display: block;
  margin-top: 16px;
  padding-top: 13px;
  border-top: 1px dashed var(--border);
  font-size: 12.5px;
  color: var(--text-light);
}
.hero-qr .alt b { display: inline; font-size: 12.5px; color: var(--text); font-weight: 600; }

/* Hero 下方：2×2 毛玻璃功能卡（仍在渐变区内） */
.hero-features {
  position: relative;
  z-index: 1;
  margin-top: 72px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
}
.hf-card {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  background: var(--card);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, .85);
  border-radius: 14px;
  box-shadow: var(--shadow);
  padding: 26px 28px;
  transition: all .25s;
}
.hf-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.hf-card .icon {
  width: 44px; height: 44px;
  flex: none;
  color: var(--ink);
  display: flex; align-items: center; justify-content: center;
  border-radius: 10px;
  background: rgba(255, 255, 255, .85);
  border: 1px solid var(--border);
}
.hf-card h3 { font-size: 16.5px; color: var(--ink); font-weight: 600; margin-bottom: 4px; }
.hf-card p { font-size: 14px; color: var(--text); }

/* ---------- 通用 section ---------- */
.section { padding: 96px 0; }
.section.tint { background: #F8FAFD; }
/* 锚点跳转时避让吸顶导航 */
[id] { scroll-margin-top: 84px; }
.section-head { text-align: center; max-width: 640px; margin: 0 auto 56px; }
.section-head h2 {
  font-size: 30px;
  color: var(--ink);
  font-weight: 600;
  letter-spacing: .02em;
  margin-bottom: 12px;
}
.section-head p { font-size: 15.5px; color: var(--text-light); }

/* ---------- 更多功能 ---------- */
.mini-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.mini-item {
  background: var(--white);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  padding: 20px 22px;
  font-size: 15px;
  color: var(--ink);
  display: flex;
  align-items: center;
  gap: 12px;
  transition: all .2s;
}
.mini-item:hover { border-color: rgba(80, 144, 240, .5); box-shadow: var(--shadow); }
.mini-item svg { color: var(--brand); flex: none; }

/* ---------- 适用场景 ---------- */
.scene-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.scene-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 30px 28px;
}
.scene-card h3 { font-size: 17px; color: var(--ink); font-weight: 600; margin-bottom: 8px; }
.scene-card p { font-size: 14px; color: var(--text); }
.scene-card.featured {
  grid-column: 1 / -1;
  border: 1.5px solid rgba(80, 144, 240, .45);
  background: linear-gradient(135deg, #F6FAFF 0%, #FDFEFF 60%);
  position: relative;
}
.scene-card.featured::before {
  content: "典型场景";
  position: absolute;
  top: -1px; right: 28px;
  background: var(--brand);
  color: #fff;
  font-size: 12px;
  padding: 3px 12px;
  border-radius: 0 0 7px 7px;
}
.scene-card.featured h3 { font-size: 19px; }
.scene-card.featured p { max-width: 46em; }
.scene-card.featured ul {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin-top: 16px;
}
.scene-card.featured li {
  font-size: 14px;
  color: var(--ink);
  display: flex;
  align-items: center;
  gap: 7px;
}
.scene-card.featured li svg { color: var(--brand); flex: none; }

/* FAQ 更多入口 */
.faq-more { text-align: center; margin-top: 26px; }
.faq-more a { font-size: 15px; color: var(--brand-deep); font-weight: 500; }
.faq-more a:hover { text-decoration: underline; }

/* ---------- 使用流程 ---------- */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; counter-reset: step; }
.step {
  position: relative;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 32px 30px;
}
.step::before {
  counter-increment: step;
  content: "0" counter(step);
  position: absolute;
  top: 26px;
  right: 28px;
  font-size: 15px;
  font-weight: 700;
  color: var(--brand);
  opacity: .55;
  letter-spacing: .06em;
}
.step .icon {
  width: 44px; height: 44px;
  border-radius: 10px;
  background: var(--brand-bg);
  color: var(--brand);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 18px;
}
.step h3 { font-size: 17px; color: var(--ink); font-weight: 600; margin-bottom: 8px; }
.step p { font-size: 14px; color: var(--text); }

/* ---------- 产品速览（GEO 事实卡） ---------- */
.facts {
  max-width: 860px;
  margin: 0 auto;
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  background: var(--white);
}
.facts table { width: 100%; border-collapse: collapse; font-size: 14.5px; }
.facts th, .facts td { padding: 14px 22px; text-align: left; vertical-align: top; }
.facts tr + tr th, .facts tr + tr td { border-top: 1px solid var(--border); }
.facts th {
  width: 32%;
  color: var(--text-light);
  font-weight: 500;
  background: #FAFBFD;
  white-space: nowrap;
}
.facts td { color: var(--ink); }

/* ---------- 客户评价 ---------- */
.quote-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.quote {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 30px 28px;
  display: flex;
  flex-direction: column;
}
.quote p { font-size: 14.5px; color: var(--text); flex: 1; }
.quote p::before { content: "“"; color: var(--brand); font-size: 24px; font-weight: 700; margin-right: 2px; }
.quote footer { margin-top: 18px; font-size: 14px; color: var(--ink); font-weight: 500; }
.quote footer span { color: var(--text-light); font-weight: 400; margin-left: 8px; font-size: 13px; }

/* ---------- 价格 ---------- */
.price-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 430px)); gap: 26px; justify-content: center; }
.price-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 40px 38px;
  transition: box-shadow .25s;
}
.price-card:hover { box-shadow: var(--shadow-lg); }
.price-card.hot { border: 1.5px solid var(--brand); position: relative; }
.price-card.hot::before {
  content: "推荐";
  position: absolute;
  top: -1px; right: 30px;
  background: var(--brand);
  color: #fff;
  font-size: 12px;
  padding: 3px 12px;
  border-radius: 0 0 7px 7px;
}
.price-card h3 { font-size: 17px; color: var(--ink); font-weight: 600; }
.price-num { margin: 16px 0 4px; color: var(--ink); }
.price-num b { font-size: 42px; font-weight: 700; letter-spacing: -.01em; }
.price-num span { font-size: 15px; color: var(--text-light); }
.price-desc { font-size: 14px; color: var(--text-light); margin-bottom: 24px; }
.price-card ul { margin-bottom: 30px; }
.price-card li { font-size: 14.5px; color: var(--text); padding: 7px 0; display: flex; align-items: center; gap: 9px; }
.price-card li svg { color: var(--brand); flex: none; }
.price-card .btn { width: 100%; text-align: center; }

/* ---------- FAQ ---------- */
.faq-list { max-width: 760px; margin: 0 auto; }
.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--white);
  margin-bottom: 14px;
  overflow: hidden;
}
.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: 18px 24px;
  font-size: 15.5px;
  font-weight: 500;
  color: var(--ink);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "";
  width: 8px; height: 8px;
  border-right: 1.8px solid var(--text-light);
  border-bottom: 1.8px solid var(--text-light);
  transform: rotate(45deg);
  transition: transform .2s;
  flex: none;
}
.faq-item[open] summary::after { transform: rotate(-135deg); }
.faq-item[open] summary { color: var(--brand-deep); }
.faq-item .faq-body { padding: 0 24px 20px; font-size: 14.5px; color: var(--text); }

/* ---------- CTA 横幅（浅色渐变，呼应 hero） ---------- */
.cta-band {
  position: relative;
  overflow: hidden;
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, .9);
  padding: 64px 48px;
  text-align: center;
  background:
    radial-gradient(50% 80% at 90% 0%, rgba(129, 122, 235, .16) 0%, transparent 60%),
    radial-gradient(40% 70% at 10% 100%, rgba(78, 205, 176, .16) 0%, transparent 60%),
    linear-gradient(155deg, #EFFBF5 0%, #F3F7FE 50%, #EEEDFA 100%);
}
.cta-band h2 { font-size: 30px; font-weight: 600; color: var(--ink); margin-bottom: 12px; letter-spacing: .02em; }
.cta-band p { font-size: 15px; color: var(--text); margin-bottom: 32px; }
.cta-contact { margin-top: 20px; font-size: 14px; color: var(--text-light); }

/* ---------- 二维码卡片 ---------- */
.qr-row {
  display: flex;
  gap: 28px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 36px;
}
.qr-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: var(--shadow);
  padding: 22px 26px 18px;
  text-align: center;
  width: 216px;
}
.qr-card img {
  width: 160px;
  height: 160px;
  margin: 0 auto 10px;
  border-radius: 8px;
}
.qr-card b { display: block; font-size: 14.5px; color: var(--ink); font-weight: 600; }
.qr-card span { font-size: 12.5px; color: var(--text-light); }

/* ---------- 使用说明页 ---------- */
.doc-hero {
  padding: 120px 0 56px;
  margin-top: -68px;
  background:
    radial-gradient(50% 70% at 90% 0%, rgba(129, 122, 235, .13) 0%, transparent 60%),
    linear-gradient(155deg, #EFFBF5 0%, #F4F8FE 60%, #EEEDFA 100%);
  text-align: center;
}
.doc-hero h1 { font-size: 36px; color: var(--ink); font-weight: 600; letter-spacing: .02em; margin-bottom: 12px; }
.doc-hero p { color: var(--text); font-size: 16px; }
.doc { max-width: 820px; margin: 0 auto; }
.doc section { padding: 44px 0 8px; }
.doc h2 {
  font-size: 24px;
  color: var(--ink);
  font-weight: 600;
  margin-bottom: 18px;
  padding-left: 14px;
  border-left: 4px solid var(--brand);
  line-height: 1.4;
}
.doc h3 { font-size: 17px; color: var(--ink); font-weight: 600; margin: 26px 0 8px; }
.doc p { margin-bottom: 12px; }
.doc .video-link { font-size: 14px; color: var(--brand-deep); }
.doc .video-link:hover { text-decoration: underline; }
.doc .video-link svg { vertical-align: -3px; margin-right: 4px; }
.flow {
  counter-reset: flow;
  list-style: none;
  padding: 0;
  margin: 18px 0;
  display: grid;
  gap: 10px;
}
.flow li {
  position: relative;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 18px 14px 56px;
  font-size: 15px;
  color: var(--ink);
}
.flow li::before {
  counter-increment: flow;
  content: counter(flow);
  position: absolute;
  left: 18px;
  top: 50%;
  transform: translateY(-50%);
  width: 24px; height: 24px;
  border-radius: 50%;
  background: var(--brand-bg);
  color: var(--brand-deep);
  font-size: 13px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
}
.flow li small { display: block; color: var(--text); font-size: 13.5px; margin-top: 2px; }
.tip {
  background: var(--brand-bg);
  border-radius: 10px;
  padding: 14px 18px;
  font-size: 14px;
  color: var(--brand-deep);
  margin: 16px 0;
}
.feature-tags { display: flex; flex-wrap: wrap; gap: 10px; margin: 14px 0 6px; }
.feature-tags span {
  border: 1px solid var(--border);
  background: var(--white);
  border-radius: 20px;
  padding: 5px 16px;
  font-size: 14px;
  color: var(--text);
}
.doc-nav { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; margin-top: 22px; }
.doc-nav a {
  font-size: 14px;
  color: var(--brand-deep);
  background: rgba(255, 255, 255, .75);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 6px 18px;
}
.doc-nav a:hover { border-color: var(--brand); }

/* ---------- 页脚：极简居中 ---------- */
.footer {
  border-top: 1px solid var(--border);
  padding: 40px 0;
  text-align: center;
  font-size: 13.5px;
  color: var(--text-light);
}
.footer p { margin: 4px 0; }
.footer a { color: var(--text-light); }
.footer a:hover { color: var(--brand); }
.footer svg { vertical-align: -3px; margin: 0 4px 0 10px; color: var(--text-light); }
.footer p:first-child svg { margin-left: 0; }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .hero h1 { font-size: 42px; }
  .hero-grid { grid-template-columns: 1fr; gap: 44px; }
  .hero-qr { justify-self: center; }
  .mini-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .hero { padding: 128px 0 64px; }
  .hero h1 { font-size: 32px; }
  .section-head h2 { font-size: 25px; }
  .nav {
    display: none;
    position: absolute;
    top: 68px; left: 0; right: 0;
    background: rgba(255, 255, 255, .97);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    gap: 0;
    padding: 8px 28px 16px;
  }
  .nav a { padding: 10px 0; }
  .menu-toggle {
    display: block;
    margin-left: auto;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--ink);
    padding: 8px;
  }
  .header .btn { display: none; }
  .header.open .nav { display: flex; }
  .hero-features { grid-template-columns: 1fr; margin-top: 48px; }
  .hero-qr img { width: 172px; height: 172px; }
  .steps, .quote-grid, .scene-grid { grid-template-columns: 1fr; }
  .price-grid { grid-template-columns: 1fr; }
  .cta-band { padding: 44px 24px; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { text-align: center; }
}
@media (max-width: 480px) {
  .mini-grid { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }
}