/* ============================================================
   诊觅官网（产品站）
   品牌体系与 App 一致：暖米白底 + 暖草绿 + 暖橙点缀
   ============================================================ */

:root {
  --paper: #FAF6F1;
  --paper-warm: #F3EEE7;
  --card: #FFFFFF;
  --ink: #2D2A26;
  --ink-soft: #6B645B;
  --ink-faint: #9C948A;
  --pine: #4CAF7D;
  --pine-dark: #3A8F66;
  --pine-deep: #2E6B50;
  --pine-deepest: #24493A;
  --moss: #E8F5EE;
  --moss-deep: #CDE7D8;
  --apricot: #F2A65A;
  --apricot-deep: #B06F1F;
  --line: #EDE6DC;
  --serif: "Noto Serif SC", "Songti SC", "SimSun", serif;
  --sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --shadow-card: 0 4px 32px rgba(138, 122, 102, 0.08);
  --shadow-lift: 0 16px 48px rgba(46, 107, 80, 0.14);
  --radius-card: 20px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
}

body {
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
}

img {
  display: block;
  max-width: 100%;
}

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

ul, ol {
  list-style: none;
}

.wrap {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

section {
  padding: 120px 0;
}

/* ---------- 标题体系 ---------- */

h1, h2 {
  font-family: var(--serif);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: 0.01em;
  text-wrap: balance;
}

h1 {
  font-size: clamp(38px, 5.2vw, 60px);
  margin: 20px 0 24px;
}

h2 {
  font-size: clamp(30px, 3.8vw, 44px);
  margin: 16px 0 20px;
}

h3 {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.28em;
  color: var(--pine-deep);
}

.eyebrow::before {
  content: "";
  width: 16px;
  height: 10px;
  border: 2.5px solid var(--pine);
  border-bottom: none;
  border-radius: 999px 999px 0 0;
}

.eyebrow-light {
  color: var(--moss-deep);
}

.eyebrow-light::before {
  border-color: var(--apricot);
}

.section-lede {
  max-width: 640px;
  font-size: 17px;
  color: var(--ink-soft);
  text-wrap: pretty;
}

/* ---------- 按钮 ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 28px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

.btn-primary {
  color: #FFFFFF;
  background: linear-gradient(135deg, #63C492, #3A8F66);
  box-shadow: 0 8px 24px rgba(58, 143, 102, 0.28);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(58, 143, 102, 0.36);
}

.btn-ghost {
  color: var(--ink);
  background: var(--card);
  border: 1px solid var(--line);
}

.btn-ghost:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-card);
}

.btn-small {
  min-height: 40px;
  padding: 0 20px;
  font-size: 14px;
}

.btn-disabled {
  color: var(--ink-faint);
  background: var(--paper-warm);
  border: 1px solid var(--line);
  cursor: default;
}

/* ---------- 顶栏 ---------- */

.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(250, 246, 241, 0.86);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s ease;
}

.site-nav.is-scrolled {
  border-bottom-color: var(--line);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 72px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-logo {
  width: 34px;
  height: 34px;
  border-radius: 9px;
}

.brand-name {
  font-family: var(--serif);
  font-size: 21px;
  font-weight: 900;
  letter-spacing: 0.06em;
}

.brand-sub {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--ink-faint);
  padding-left: 10px;
  border-left: 1px solid var(--line);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  font-size: 15px;
  font-weight: 500;
}

.nav-links a {
  color: var(--ink-soft);
  transition: color 0.2s ease;
}

.nav-links a:hover {
  color: var(--pine-deep);
}

/* ---------- Hero ---------- */

.hero {
  padding: 170px 0 110px;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
  gap: 64px;
}

.lede {
  max-width: 520px;
  font-size: 17px;
  color: var(--ink-soft);
  text-wrap: pretty;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 36px;
}

.hero-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  margin-top: 32px;
  font-size: 14px;
  color: var(--ink-soft);
}

.hero-facts li {
  display: flex;
  align-items: center;
  gap: 8px;
}

.hero-facts li::before {
  content: "";
  width: 10px;
  height: 7px;
  border: 2px solid var(--apricot);
  border-bottom: none;
  border-radius: 999px 999px 0 0;
}

.hero-art {
  display: flex;
  justify-content: center;
}

/* 手机模型 */

.phone {
  width: 300px;
  padding: 10px;
  border-radius: 46px;
  background: #1D1B18;
  box-shadow: 0 32px 80px rgba(61, 53, 42, 0.28);
}

.phone-screen {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 14px 14px 10px;
  border-radius: 38px;
  background: var(--paper);
  color: var(--ink);
  overflow: hidden;
}

.statusbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 8px;
  font-size: 11px;
  font-weight: 600;
  color: var(--ink-soft);
}

.status-dots {
  display: flex;
  gap: 3px;
}

.status-dots i {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--ink-faint);
}

.appbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 2px 4px 0;
}

.appbar-title {
  font-size: 16px;
  font-weight: 700;
}

.appbar-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: linear-gradient(135deg, #63C492, #3A8F66);
}

.mini-hero {
  padding: 14px;
  border-radius: 16px;
  color: #FFFFFF;
  background: linear-gradient(135deg, #63C492, #3A8F66);
}

.mini-hero-title {
  font-size: 14px;
  font-weight: 700;
}

.mini-hero-sub {
  margin-top: 2px;
  font-size: 11px;
  opacity: 0.85;
}

.mini-hero-btn {
  display: inline-flex;
  margin-top: 10px;
  padding: 5px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.22);
  font-size: 11px;
  font-weight: 600;
}

.mini-card {
  padding: 12px;
  border-radius: 16px;
  background: #FFFFFF;
  box-shadow: 0 2px 16px rgba(138, 122, 102, 0.07);
}

.mini-card-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}

.mini-card-title {
  font-size: 12px;
  font-weight: 600;
}

.mini-card-value {
  font-size: 15px;
  font-weight: 700;
  color: var(--pine-deep);
}

.mini-card-value em {
  font-style: normal;
  font-size: 10px;
  font-weight: 500;
  color: var(--ink-faint);
}

.mini-chart {
  width: 100%;
  height: auto;
  margin-top: 8px;
}

.mini-card-foot {
  margin-top: 6px;
  font-size: 10px;
  color: var(--ink-faint);
}

.mini-visit {
  display: flex;
  align-items: center;
  gap: 10px;
}

.mini-dot {
  flex: none;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--pine);
}

.mini-visit-title {
  font-size: 12px;
  font-weight: 600;
}

.mini-visit-sub {
  font-size: 10px;
  color: var(--ink-faint);
}

.tabbar {
  display: flex;
  justify-content: space-around;
  padding: 8px 0 2px;
  border-top: 1px solid #F1EAE1;
}

.tab {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  font-size: 9px;
  color: var(--ink-faint);
}

.tab svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.tab-active {
  color: var(--pine);
  font-weight: 700;
}

/* ---------- 功能 ---------- */

.features {
  background: var(--paper-warm);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 48px;
}

.feature-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 28px 26px;
  background: var(--card);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lift);
}

.feature-card p {
  font-size: 14.5px;
  color: var(--ink-soft);
  text-wrap: pretty;
}

.icon-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: 16px;
  background: var(--moss);
}

.icon-badge svg {
  width: 26px;
  height: 26px;
  fill: none;
  stroke: var(--pine-deep);
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* ---------- AI 问答（深色） ---------- */

.qa {
  background: var(--pine-deepest);
  color: #F4F1EA;
  position: relative;
  overflow: hidden;
}

.qa::before {
  content: "";
  position: absolute;
  right: -220px;
  top: -160px;
  width: 720px;
  height: 720px;
  border: 2px solid rgba(232, 245, 238, 0.07);
  border-bottom: none;
  border-radius: 999px 999px 0 0;
  pointer-events: none;
}

.qa .wrap {
  position: relative;
}

.qa h2 {
  color: #FFFFFF;
}

.qa .section-lede {
  color: rgba(244, 241, 234, 0.78);
}

.qa-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 48px;
}

.qa-step {
  padding: 24px 22px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: background-color 0.25s ease, transform 0.25s ease;
}

.qa-step:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-3px);
}

.qa-step h3 {
  margin: 14px 0 6px;
  font-size: 16px;
  color: #FFFFFF;
}

.qa-step p {
  font-size: 13.5px;
  line-height: 1.65;
  color: rgba(244, 241, 234, 0.72);
  text-wrap: pretty;
}

.feature-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 13px;
  background: rgba(242, 166, 90, 0.16);
}

.feature-icon svg {
  width: 23px;
  height: 23px;
  fill: none;
  stroke: var(--apricot);
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.qa-note {
  margin-top: 32px;
  font-size: 13px;
  color: rgba(244, 241, 234, 0.55);
}

/* ---------- 隐私安全 ---------- */

.privacy-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 48px;
}

.privacy-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 28px 24px;
  background: var(--card);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.privacy-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lift);
}

.privacy-card p {
  font-size: 14px;
  color: var(--ink-soft);
  text-wrap: pretty;
}

/* ---------- 额度与价格 ---------- */

.pricing {
  background: var(--paper-warm);
}

.price-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 48px;
}

.price-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 28px 24px;
  background: var(--card);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.price-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lift);
}

.price-card-featured {
  outline: 2px solid var(--pine);
}

.price-badge {
  position: absolute;
  top: -12px;
  right: 18px;
  padding: 4px 14px;
  border-radius: 999px;
  background: var(--pine);
  color: #FFFFFF;
  font-size: 12px;
  font-weight: 700;
}

.price-badge-orange {
  background: var(--apricot);
  color: #6B4210;
}

.price-amount {
  margin-top: 8px;
  font-family: var(--serif);
  font-size: 40px;
  font-weight: 900;
  line-height: 1.1;
  color: var(--pine-deep);
}

.price-quota {
  font-size: 14px;
  font-weight: 700;
}

.price-points {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 12px;
}

.price-points li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 13px;
  color: var(--ink-soft);
}

.price-points li::before {
  content: "";
  flex: none;
  margin-top: 8px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--pine);
}

.pricing-note {
  margin-top: 28px;
  font-size: 13px;
  color: var(--ink-faint);
}

/* ---------- 下载 ---------- */

.download {
  background: var(--moss);
}

.download-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.download-inner .section-lede {
  text-align: center;
}

.download-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
  margin-top: 36px;
}

.download-note {
  margin-top: 24px;
  max-width: 560px;
  font-size: 13.5px;
  color: var(--ink-soft);
}

.download-contact {
  margin-top: 14px;
  font-size: 14px;
  color: var(--ink-soft);
}

.contact-value-inline {
  font-weight: 700;
  color: var(--ink);
}

/* ---------- 页脚 ---------- */

.site-footer {
  background: var(--ink);
  color: rgba(250, 246, 241, 0.72);
  padding: 56px 0 32px;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 32px;
  padding-bottom: 32px;
  border-bottom: 1px solid rgba(250, 246, 241, 0.14);
}

.footer-brand .brand-name {
  color: #FAF6F1;
}

.footer-brand p {
  margin-top: 8px;
  font-size: 13px;
}

.footer-links {
  display: flex;
  gap: 28px;
  font-size: 14px;
}

.footer-links a:hover {
  color: #FAF6F1;
}

.footer-legal {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px 24px;
  padding-top: 24px;
  font-size: 12px;
  color: rgba(250, 246, 241, 0.42);
}

/* ---------- 滚动显现 ---------- */

[data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- 响应式 ---------- */

@media (max-width: 960px) {
  section {
    padding: 88px 0;
  }

  .hero {
    padding-top: 140px;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .hero-art {
    order: -1;
  }

  .feature-grid,
  .privacy-grid,
  .price-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .qa-steps {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 600px) {
  .nav-links {
    display: none;
  }

  .brand-sub {
    display: none;
  }

  .feature-grid,
  .privacy-grid,
  .price-grid,
  .qa-steps {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    flex-direction: column;
  }
}

/* ---------- 无障碍 ---------- */

:focus-visible {
  outline: 2.5px solid var(--pine);
  outline-offset: 3px;
  border-radius: 6px;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
  }
}