:root {
  --brand: #176cf6;
  --brand2: #04a8e7;
  --product: #3fcac6;
  --product2: #28b8b5;
  --diag: #0b6df8;
  --navy: #10243e;
  --text: #172235;
  --muted: #718095;
  --bg: #f6fbff;
  --soft: #eef9fb;
  --line: #dfeaf2;
  --green: #19b76b;
  --orange: #ff9e38;
  --red: #ef4d64;
  --radius: 24px;
  --shadow: 0 18px 56px rgba(45, 94, 130, .10);
  --max: 1250px;
}

* {
  box-sizing: border-box
}

html {
  scroll-behavior: smooth
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
  color: var(--text);
  background: #fff;
  line-height: 1.7
}

.wrap {
  max-width: var(--max);
  margin: auto;
  padding: 0 28px
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, .86);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(223, 234, 242, .75)
}

.nav {
  height: 78px;
  display: flex;
  align-items: center;
  gap: 28px
}

.logo {
  width: 248px;
  max-height: 58px;
  object-fit: contain;
  object-position: left
}

.nav-links {
  margin-left: auto;
  display: flex;
  gap: 24px;
  font-size: 15px
}

.nav-links a {
  padding: 10px 0;
  color: #3b4c61
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--brand);
  font-weight: 650
}

.nav-actions {
  display: flex;
  gap: 10px;
  margin-left: 12px
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 46px;
  padding: 0 20px;
  border-radius: 14px;
  border: 1px solid transparent;
  font-weight: 700;
  cursor: pointer;
  transition: .22s;
  background: none;
  font-size: 15px
}

.btn:hover {
  transform: translateY(-1px)
}

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--brand), var(--brand2));
  box-shadow: 0 10px 24px rgba(23, 108, 246, .2)
}

.btn-product {
  color: #fff;
  background: linear-gradient(135deg, var(--product2), var(--product))
}

.btn-outline {
  color: var(--brand);
  border-color: #bcd6fb;
  background: #fff
}

.btn-soft {
  color: #157b85;
  background: #e9faf9
}

.menu-btn {
  display: none;
  margin-left: auto;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  font-size: 20px
}

.hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, #fff 0%, #f6fbff 72%, #fff 100%);
  padding: 94px 0 78px
}

.hero:after {
  content: "";
  position: absolute;
  width: 620px;
  height: 620px;
  right: -180px;
  top: -180px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(57, 202, 198, .15), rgba(23, 108, 246, .08) 45%, transparent 70%)
}

.hero-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  align-items: center;
  gap: 58px
}

.eyebrow {
  font-size: 13px;
  letter-spacing: .16em;
  color: var(--brand);
  font-weight: 800;
  margin-bottom: 14px;
  text-transform: uppercase
}

.hero h1,
.page-hero h1 {
  font-size: 55px;
  line-height: 1.12;
  margin: 0 0 20px;
  color: var(--navy);
  letter-spacing: -.025em
}

.hero h1 span {
  background: linear-gradient(90deg, var(--brand), var(--brand2), #776eea);
  -webkit-background-clip: text;
  color: transparent
}

.lead {
  font-size: 20px;
  color: #52647a;
  max-width: 720px;
  margin: 0 0 30px
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap
}

.tag-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 26px
}

.tag {
  font-size: 13px;
  color: #33718a;
  background: #eaf9fb;
  border: 1px solid #d1f0f0;
  padding: 7px 11px;
  border-radius: 999px
}

.hero-visual {
  position: relative;
  min-height: 510px
}

.device {
  position: absolute;
  background: #fff;
  border-radius: 28px;
  border: 1px solid #e4eef4;
  box-shadow: var(--shadow);
  padding: 10px;
  overflow: hidden
}

.device img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 20px
}

.device-main {
  width: 310px;
  height: 560px;
  right: 70px;
  top: -20px;
  transform: rotate(1deg)
}

.device-side {
  width: 230px;
  height: 420px;
  left: 0;
  top: 96px;
  transform: rotate(-5deg);
  opacity: .94
}

.float-card {
  position: absolute;
  right: 0;
  bottom: 26px;
  background: #fff;
  border: 1px solid #dfeef5;
  border-radius: 18px;
  padding: 16px 18px;
  box-shadow: var(--shadow);
  font-weight: 700;
  color: #2b5d78
}

.section {
  padding: 82px 0
}

.section.soft {
  background: var(--bg)
}

.section.tint {
  background: linear-gradient(180deg, #eef9fb, #fff)
}

.section.diag {
  background: linear-gradient(180deg, #edf6ff, #fff)
}

.section-head {
  text-align: center;
  /* max-width: 820px; */
  margin: 0 auto 44px
}

.section-head h2 {
  font-size: 40px;
  line-height: 1.2;
  margin: 8px 0 14px;
  color: var(--navy);
  letter-spacing: -.02em
}

.section-head p {
  font-size: 17px;
  color: var(--muted);
  margin: 0
}

.grid {
  display: grid;
  gap: 20px
}

.g2 {
  grid-template-columns: repeat(2, 1fr)
}

.g3 {
  grid-template-columns: repeat(3, 1fr)
}

.g4 {
  grid-template-columns: repeat(4, 1fr)
}

.cards-center .card {
  text-align: center
}

.card {
  background: #fff;
  border: 1px solid #e5eef4;
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: 0 12px 36px rgba(67, 104, 130, .07)
}

.card h3 {
  margin: 0 0 10px;
  color: var(--navy);
  font-size: 22px
}

.card p {
  margin: 0;
  color: #6d7d90
}

.card .num {
  font-weight: 800;
  color: var(--product2);
  margin-right: 10px
}

/* 隐私政策等法律长文排版（仅 .card.legal 作用域） */
.card.legal {
  max-width: 900px;
  margin: 0 auto;
  padding: 40px 44px
}

.card.legal p {
  margin: 0 0 12px;
  line-height: 1.9
}

.card.legal h3 {
  margin: 34px 0 14px;
  padding-top: 26px;
  border-top: 1px solid #edf3f7;
  font-size: 21px
}

.card.legal h3:first-of-type {
  margin-top: 0;
  padding-top: 0;
  border-top: none
}

.card.legal h4 {
  margin: 22px 0 8px;
  font-size: 17px;
  color: var(--navy)
}

.card.legal ul {
  margin: 0 0 14px;
  padding-left: 22px
}

.card.legal li {
  margin: 5px 0;
  line-height: 1.8;
  color: #6d7d90
}

.icon-dot {
  width: 46px;
  height: 46px;
  border-radius: 15px;
  display: grid;
  place-items: center;
  margin-bottom: 18px;
  background: linear-gradient(135deg, #e7f8fa, #e8f1ff);
  font-size: 22px
}

.feature-card {
  min-height: 220px
}

.flow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap
}

.flow .step {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 18px 20px;
  min-width: 130px;
  text-align: center;
  font-weight: 750;
  font-size: 17px;
  color: #33516c
}

.flow small {
  font-size: 15px;
  color: #607288
}

.flow .arr {
  color: #8bb7cf;
  font-size: 22px
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 42px;
  align-items: center
}

.copy h2 {
  font-size: 37px;
  line-height: 1.2;
  color: var(--navy);
  margin: 0 0 18px
}

.copy p {
  color: #65768a;
  font-size: 17px
}

.copy .quote {
  font-size: 24px;
  color: #173a57;
  font-weight: 800;
  border-left: 4px solid var(--product);
  padding-left: 18px
}

.shot-panel {
  border-radius: 32px;
  min-height: 520px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden
}

.shot-panel img {
  max-height: 560px;
  max-width: 100%;
  border-radius: 22px;
  /* box-shadow: 0 24px 55px rgba(50, 91, 130, .18) */
}

.shot-row {
  display: flex;
  gap: 18px;
  overflow: auto;
  padding: 8px 4px 20px;
  scroll-snap-type: x mandatory;
  justify-content: center;
}

.shot-row img {
  height: 520px;
  border-radius: 22px;
  border: 1px solid #e1edf3;
  box-shadow: 0 14px 40px rgba(41, 86, 120, .12);
  scroll-snap-align: center
}

.stat {
  font-size: 52px;
  font-weight: 850;
  line-height: 1;
  color: var(--brand);
  margin-bottom: 10px
}

.stat.product {
  color: var(--product2)
}

.stat.diag {
  color: var(--diag)
}

.price {
  font-size: 42px;
  font-weight: 850;
  color: var(--navy);
  line-height: 1.15
}

.price small {
  font-size: 15px;
  color: var(--muted);
  font-weight: 600
}

.product-card {
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column
}

.product-card .badge {
  align-self: flex-end
}

.product-card p:has(> .btn) {
  text-align: center
}

.product-card:before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 4px;
  background: linear-gradient(var(--product), var(--brand))
}

.product-card.featured {
  border-color: #9ed9d6;
  box-shadow: 0 20px 55px rgba(38, 181, 178, .13)
}

.badge {
  display: inline-flex;
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 800;
  background: #eaf8fb;
  color: #2c8087
}

.badge.diag {
  background: #eaf2ff;
  color: #0b6df8
}

.table-wrap {
  overflow: auto;
  border-radius: 24px;
  border: 1px solid var(--line);
  background: #fff
}

.compare {
  border-collapse: collapse;
  width: 100%;
  min-width: 850px
}

.compare th,
.compare td {
  padding: 18px 16px;
  border-bottom: 1px solid #edf2f6;
  text-align: center
}

.compare th:first-child,
.compare td:first-child {
  text-align: left
}

.compare thead th {
  background: #f5fbff;
  color: #2d4a65
}

.compare .yes {
  color: var(--green);
  font-weight: 800
}

.compare .dash {
  color: #aab5c1
}

.page-hero {
  padding: 78px 0 58px;
  background: linear-gradient(180deg, #f7fcff, #fff)
}

.page-hero.diag {
  background: linear-gradient(180deg, #eaf5ff, #fff)
}

.page-hero .wrap {
  max-width: 1075px
}

.page-hero p {
  font-size: 19px;
  color: #607288;
  max-width: 840px
}

.breadcrumbs {
  font-size: 13px;
  color: #92a2b2;
  margin-bottom: 18px
}

.mini-logo {
  width: 180px
}

.cta-band {
  margin: 76px 0 0;
  background: linear-gradient(135deg, #0f6df5, #13a7e2 55%, #38c9c5);
  color: #fff;
  border-radius: 32px;
  padding: 44px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px
}

.cta-band h2 {
  margin: 0;
  font-size: 32px
}

.cta-band p {
  margin: 6px 0 0;
  opacity: .86
}

.footer {
  background: #0f2032;
  color: #c8d2dd;
  padding: 58px 0 26px;
  margin-top: 70px
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 36px
}

.footer .logo {
  filter: brightness(0) invert(1);
  opacity: .93;
  width: 220px
}

.footer h4 {
  color: #fff;
  margin: 0 0 14px
}

.footer a {
  color: #aebdcc;
  padding: 4px 0
}

.footer-grid a {
  display: block
}

.footer small {
  color: #7890a5
}

.service-qr {
  display: inline-block;
  vertical-align: top;
  width: 116px;
  border-radius: 12px;
  background: #fff
}

.copyright {
  border-top: 1px solid #24394d;
  margin-top: 34px;
  padding-top: 18px;
  font-size: 13px;
  color: #7990a5;
  text-align: center;
}

.modal {
  position: fixed;
  inset: 0;
  background: rgba(9, 25, 42, .52);
  z-index: 100;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px
}

.modal.open {
  display: flex
}

.modal-card {
  background: #fff;
  border-radius: 26px;
  max-width: 480px;
  width: 100%;
  padding: 30px;
  text-align: center;
  position: relative;
  box-shadow: 0 30px 80px rgba(0, 0, 0, .2)
}

.modal-card h3 {
  font-size: 26px;
  margin: 4px 0 6px
}

.modal-card p {
  color: #6e7e90
}

.modal-card img {
  width: 260px;
  max-width: 80%;
  margin: 10px auto 8px
}

.close {
  position: absolute;
  right: 18px;
  top: 14px;
  border: 0;
  background: #eef3f6;
  border-radius: 50%;
  width: 34px;
  height: 34px;
  font-size: 22px;
  cursor: pointer
}

.trial-mark {
  width: 72px;
  height: 72px;
  margin: 4px auto 14px;
  border-radius: 22px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, #e8f0ff, #dffafa);
  font-size: 36px
}

.highlight {
  color: var(--brand)
}

.product-highlight {
  color: var(--product2)
}

.diag-highlight {
  color: var(--diag)
}

.note {
  font-size: 13px;
  color: #8a99aa
}

.pill-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 20px 0;
  justify-content: center;
}

.pill-list span {
  border: 1px solid #d9e9f0;
  background: #fff;
  border-radius: 999px;
  padding: 9px 13px;
  color: #587087
}

.timeline {
  display: grid;
  gap: 14px
}

.timeline .item {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 16px;
  align-items: start
}

.timeline .dot {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: #e9f9f8;
  color: #138e8c;
  font-weight: 850
}

.timeline h3 {
  margin: 4px 0 3px
}

.timeline p {
  margin: 0;
  color: #718095
}

.kpi-band {
  background: linear-gradient(135deg, #29c1bd, #48d6d0);
  color: #fff;
  border-radius: 28px;
  padding: 28px
}

.kpi-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-top: 18px
}

.kpi {
  background: rgba(255, 255, 255, .93);
  color: #1c2c3c;
  border-radius: 18px;
  padding: 20px;
  text-align: center
}

.kpi strong {
  font-size: 28px
}

.diag-theme .btn-primary {
  background: linear-gradient(135deg, #075eea, #1685ff)
}

.diag-theme .eyebrow,
.diag-theme .highlight {
  color: var(--diag)
}

@media(max-width:980px) {
  .nav-links {
    display: none;
    position: absolute;
    left: 18px;
    right: 18px;
    top: 72px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 18px;
    box-shadow: var(--shadow);
    padding: 14px;
    flex-direction: column
  }

  .nav-links.open {
    display: flex
  }

  .nav-actions {
    display: none
  }

  .menu-btn {
    display: block
  }

  .logo {
    width: 205px
  }

  .hero {
    padding-top: 64px
  }

  .hero-grid,
  .split {
    grid-template-columns: 1fr
  }

  .hero h1,
  .page-hero h1 {
    font-size: 44px
  }

  .hero-visual {
    min-height: 520px
  }

  .device-main {
    right: 20%;
  }

  .device-side {
    left: 7%
  }

  .g4 {
    grid-template-columns: repeat(2, 1fr)
  }

  .g3 {
    grid-template-columns: repeat(2, 1fr)
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr
  }

  .cta-band {
    align-items: flex-start;
    flex-direction: column
  }

  .kpi-grid {
    grid-template-columns: repeat(2, 1fr)
  }
}

@media(max-width:640px) {
  .wrap {
    padding: 0 18px
  }

  .nav {
    height: 68px
  }

  .logo {
    width: 170px
  }

  .hero,
  .section,
  .page-hero {
    padding: 58px 0
  }

  .hero h1,
  .page-hero h1 {
    font-size: 36px
  }

  .section-head h2,
  .copy h2 {
    font-size: 31px
  }

  .lead {
    font-size: 17px
  }

  .hero-grid {
    gap: 24px
  }

  .hero-visual {
    min-height: 430px
  }

  .device-main {
    width: 230px;
    height: 410px;
    right: 3%;
    top: 10px
  }

  .device-side {
    width: 170px;
    height: 310px;
    left: 0;
    top: 95px
  }

  .float-card {
    font-size: 12px;
    right: 0;
    bottom: 0
  }

  .g2,
  .g3,
  .g4 {
    grid-template-columns: 1fr
  }

  .card {
    padding: 22px
  }

  .shot-row img {
    height: 430px
  }

  .footer-grid {
    grid-template-columns: 1fr
  }

  .price {
    font-size: 34px
  }

  .cta-band {
    padding: 28px;
    border-radius: 24px
  }

  .cta-band h2 {
    font-size: 26px
  }

  .kpi-grid {
    grid-template-columns: 1fr 1fr
  }

  .logo {
    object-fit: contain
  }
}