:root {
  --bg: #f3f7ff;
  --bg-deep: #071942;
  --bg-strong: #0b52eb;
  --panel: rgba(255, 255, 255, 0.86);
  --panel-strong: #ffffff;
  --panel-soft: rgba(231, 241, 255, 0.7);
  --line: rgba(35, 95, 214, 0.12);
  --line-strong: rgba(17, 86, 228, 0.22);
  --text: #08152d;
  --muted: #536580;
  --brand: #1157e4;
  --brand-strong: #0a47c4;
  --brand-soft: #e7efff;
  --sky: #57d4ff;
  --shadow: 0 28px 80px rgba(10, 39, 101, 0.16);
  --shadow-soft: 0 18px 48px rgba(10, 39, 101, 0.1);
  --radius-xl: 34px;
  --radius-lg: 26px;
  --radius-md: 20px;
  --radius-sm: 14px;
  --container: min(1180px, calc(100% - 32px));
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  font-family: "SF Pro Display", "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(84, 159, 255, 0.24), transparent 34%),
    radial-gradient(circle at 86% 10%, rgba(95, 215, 255, 0.22), transparent 26%),
    linear-gradient(180deg, #f8fbff 0%, #eef4ff 46%, #f7faff 100%);
}

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

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

button,
input,
textarea,
select {
  font: inherit;
}

.page-shell {
  position: relative;
  overflow: clip;
}

.container {
  width: var(--container);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  backdrop-filter: blur(18px);
  background: rgba(248, 251, 255, 0.78);
  border-bottom: 1px solid rgba(17, 86, 228, 0.08);
}

.nav-wrap {
  min-height: 80px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.brand-mark {
  width: 46px;
  height: 46px;
  border-radius: 14px;
  padding: 3px;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.95), rgba(207, 226, 255, 0.8));
  box-shadow: 0 12px 32px rgba(17, 86, 228, 0.18);
}

.brand-mark img {
  width: 100%;
  height: 100%;
  border-radius: 11px;
}

.brand-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.brand-text strong {
  font-size: 1rem;
  line-height: 1.1;
}

.brand-text span {
  color: var(--muted);
  font-size: 0.78rem;
}

.nav-links {
  display: inline-flex;
  align-items: center;
  gap: 28px;
}

.nav-links a {
  color: rgba(8, 21, 45, 0.78);
  font-weight: 600;
  font-size: 0.95rem;
  transition: color 0.22s ease;
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--brand);
}

.nav-download,
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 999px;
  font-weight: 700;
  transition:
    transform 0.22s ease,
    box-shadow 0.22s ease,
    background 0.22s ease,
    color 0.22s ease,
    border-color 0.22s ease;
}

.nav-download {
  min-height: 44px;
  padding: 0 18px;
  color: #ffffff;
  background: linear-gradient(135deg, var(--brand), #2b86ff);
  box-shadow: 0 16px 30px rgba(17, 86, 228, 0.26);
}

.nav-download:hover,
.btn:hover {
  transform: translateY(-2px);
}

.hero {
  position: relative;
  padding: 58px 0 74px;
}

.hero-orb {
  position: absolute;
  border-radius: 999px;
  filter: blur(10px);
  pointer-events: none;
}

.hero-orb-one {
  top: 36px;
  left: -120px;
  width: 320px;
  height: 320px;
  background: radial-gradient(circle, rgba(87, 212, 255, 0.22), transparent 70%);
}

.hero-orb-two {
  top: 10px;
  right: -80px;
  width: 360px;
  height: 360px;
  background: radial-gradient(circle, rgba(17, 87, 228, 0.14), transparent 72%);
}

.hero-layout {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
  gap: 46px;
  align-items: center;
}

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 16px;
  color: var(--brand);
  font-size: 0.92rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.kicker::before {
  content: "";
  width: 28px;
  height: 1px;
  background: currentColor;
  opacity: 0.45;
}

.hero-title {
  margin: 0;
  max-width: 10ch;
  font-size: clamp(2.8rem, 6vw, 5rem);
  line-height: 0.98;
  letter-spacing: -0.05em;
}

.hero-desc,
.section-head p,
.feature-card p,
.shot-card p,
.support-card span,
.faq-list p,
.summary-card p,
.cta-copy p,
.footer-copy,
.footer-meta,
.legal-intro p,
.legal-content p,
.legal-content li {
  color: var(--muted);
  line-height: 1.78;
}

.hero-desc {
  max-width: 610px;
  margin: 20px 0 28px;
  font-size: 1.05rem;
}

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

.btn-primary {
  color: #ffffff;
  background: linear-gradient(135deg, var(--brand), #2d90ff);
  box-shadow: 0 18px 34px rgba(17, 86, 228, 0.28);
}

.btn-secondary {
  color: var(--text);
  background: rgba(255, 255, 255, 0.76);
  border: 1px solid rgba(17, 86, 228, 0.12);
  box-shadow: var(--shadow-soft);
}

.btn-light {
  color: var(--brand);
  background: #ffffff;
  box-shadow: 0 20px 34px rgba(2, 14, 36, 0.18);
}

.btn-outline-light {
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.34);
  background: rgba(255, 255, 255, 0.08);
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  padding: 0;
  margin: 26px 0 0;
  list-style: none;
}

.hero-tags li,
.legal-meta span {
  padding: 10px 14px;
  border-radius: 999px;
  color: rgba(8, 21, 45, 0.88);
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(17, 86, 228, 0.1);
  box-shadow: 0 12px 26px rgba(12, 31, 78, 0.08);
  font-size: 0.95rem;
  font-weight: 700;
}

.hero-summary {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 30px;
}

.summary-card,
.trust-card,
.feature-card,
.shot-card,
.support-card,
.faq-list details,
.legal-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(20px);
}

.summary-card {
  padding: 22px;
}

.summary-card h2 {
  margin: 6px 0 8px;
  font-size: 1.18rem;
}

.summary-label {
  margin: 0;
  color: var(--brand);
  font-size: 0.88rem;
  font-weight: 800;
}

.hero-visual {
  position: relative;
  min-height: 720px;
}

.board-decor {
  position: absolute;
  top: 68px;
  left: 8px;
  width: min(100%, 430px);
  aspect-ratio: 1;
  display: grid;
  grid-template-columns: repeat(9, 1fr);
  grid-template-rows: repeat(9, 1fr);
  gap: 0;
  padding: 20px;
  border-radius: 36px;
  background:
    linear-gradient(180deg, rgba(240, 247, 255, 0.76), rgba(228, 239, 255, 0.42)),
    rgba(255, 255, 255, 0.28);
  border: 1px solid rgba(17, 86, 228, 0.08);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.9);
}

.board-cell {
  display: flex;
  align-items: center;
  justify-content: center;
  border-right: 1px solid rgba(60, 109, 220, 0.14);
  border-bottom: 1px solid rgba(60, 109, 220, 0.14);
  color: rgba(8, 21, 45, 0.48);
  font-size: 1rem;
  font-weight: 700;
}

.board-cell.is-strong-right {
  border-right-width: 2px;
  border-right-color: rgba(17, 86, 228, 0.28);
}

.board-cell.is-strong-bottom {
  border-bottom-width: 2px;
  border-bottom-color: rgba(17, 86, 228, 0.28);
}

.board-cell.is-filled {
  color: rgba(8, 21, 45, 0.82);
}

.phone-stage {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.phone-card {
  position: relative;
  z-index: 2;
  width: min(372px, 78vw);
  padding: 16px;
  border-radius: 42px;
  background: linear-gradient(180deg, rgba(8, 24, 67, 0.94), rgba(10, 64, 179, 0.92));
  box-shadow: 0 36px 90px rgba(8, 31, 87, 0.28);
  transform: rotate(-4deg);
}

.phone-shell {
  border-radius: 30px;
  padding: 12px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.3), rgba(255, 255, 255, 0.12));
  border: 1px solid rgba(255, 255, 255, 0.18);
}

.phone-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 12px;
}

.mini-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: #ffffff;
  font-size: 0.92rem;
  font-weight: 700;
}

.mini-brand img {
  width: 28px;
  height: 28px;
  border-radius: 8px;
}

.mini-badge {
  padding: 7px 10px;
  border-radius: 999px;
  color: rgba(255, 255, 255, 0.88);
  background: rgba(255, 255, 255, 0.12);
  font-size: 0.76rem;
  font-weight: 700;
}

.phone-image {
  width: 100%;
  border-radius: 24px;
}

.floating-card {
  position: absolute;
  z-index: 3;
  max-width: 210px;
  padding: 16px 18px;
  border-radius: 20px;
  color: var(--text);
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(17, 86, 228, 0.12);
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(22px);
}

.floating-card span {
  display: block;
  margin-bottom: 6px;
  color: var(--brand);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.floating-card strong {
  font-size: 1rem;
  line-height: 1.4;
}

.floating-card-top {
  top: 124px;
  left: -18px;
}

.floating-card-bottom {
  right: -10px;
  bottom: 118px;
}

.section {
  padding: 96px 0;
}

.trust-strip {
  padding-top: 12px;
}

.trust-grid,
.feature-grid,
.shots-grid {
  display: grid;
  gap: 18px;
}

.trust-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.trust-card {
  padding: 24px 26px;
}

.trust-card p,
.support-card p {
  margin: 0 0 10px;
  color: var(--brand);
  font-size: 0.9rem;
  font-weight: 800;
}

.trust-card strong {
  font-size: 1.08rem;
  line-height: 1.5;
}

.section-head {
  max-width: 760px;
  margin: 0 auto 42px;
  text-align: center;
}

.section-head h2,
.cta-copy h2,
.legal-hero h1 {
  margin: 0 0 16px;
  font-size: clamp(2rem, 4vw, 3.4rem);
  line-height: 1.08;
  letter-spacing: -0.04em;
}

.section-head.align-left,
.legal-intro {
  margin-left: 0;
  text-align: left;
}

.section-head p {
  margin: 0;
}

.feature-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.feature-card {
  padding: 26px;
}

.feature-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 42px;
  height: 42px;
  border-radius: 999px;
  color: var(--brand);
  background: var(--brand-soft);
  font-size: 0.9rem;
  font-weight: 800;
}

.feature-card h3,
.shot-card h3,
.support-card h3 {
  margin: 18px 0 10px;
  font-size: 1.3rem;
  line-height: 1.3;
}

.feature-card p,
.shot-card p,
.support-card span {
  margin: 0;
}

.section-surface {
  position: relative;
}

.section-surface::before {
  content: "";
  position: absolute;
  inset: 10% 0 10% 0;
  background:
    linear-gradient(180deg, rgba(216, 232, 255, 0.62), rgba(216, 232, 255, 0.04)),
    radial-gradient(circle at top left, rgba(87, 212, 255, 0.18), transparent 30%);
  pointer-events: none;
}

.section-surface .container {
  position: relative;
}

.shots-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.shot-card {
  padding: 14px;
  overflow: hidden;
}

.shot-card img {
  width: 100%;
  aspect-ratio: 9 / 19.5;
  object-fit: cover;
  border-radius: 20px;
}

.shot-card figcaption {
  padding: 18px 8px 10px;
}

.support-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.support-card {
  min-height: 200px;
  padding: 24px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.9), rgba(236, 244, 255, 0.76)),
    var(--panel);
}

.faq-list {
  display: grid;
  gap: 16px;
  max-width: 980px;
  margin: 0 auto;
}

.faq-list details {
  padding: 22px 24px;
}

.faq-list summary {
  cursor: pointer;
  font-size: 1.05rem;
  font-weight: 800;
  list-style: none;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list p {
  margin: 12px 0 0;
}

.cta-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 22px;
  align-items: center;
  padding: 38px;
  border-radius: var(--radius-xl);
  color: #ffffff;
  background:
    radial-gradient(circle at top left, rgba(87, 212, 255, 0.28), transparent 32%),
    linear-gradient(135deg, #081d4e, #0f57ef 70%, #1394ff);
  box-shadow: 0 34px 80px rgba(7, 25, 66, 0.24);
}

.cta-copy p,
.cta-copy .kicker {
  color: rgba(255, 255, 255, 0.76);
}

.cta-copy .kicker::before {
  background: rgba(255, 255, 255, 0.5);
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.site-footer {
  padding: 30px 0 38px;
  color: rgba(8, 21, 45, 0.84);
}

.footer-wrap,
.footer-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.footer-wrap {
  padding-top: 18px;
  border-top: 1px solid rgba(17, 86, 228, 0.08);
}

.brand-footer .brand-mark {
  width: 42px;
  height: 42px;
}

.footer-copy {
  margin: 12px 0 0;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 18px;
  font-weight: 700;
}

.footer-links a:hover,
.footer-links a:focus-visible {
  color: var(--brand);
}

.footer-meta {
  margin-top: 20px;
  font-size: 0.92rem;
}

.footer-meta p {
  margin: 0;
}

.footer-meta a {
  text-decoration: underline;
  text-decoration-color: rgba(17, 86, 228, 0.28);
  text-underline-offset: 3px;
}

.beian-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.beian-link-gongan img {
  width: 18px;
  height: 18px;
  flex: 0 0 18px;
}

.footer-meta a:hover,
.footer-meta a:focus-visible {
  color: var(--brand);
}

.legal-page-body {
  background:
    radial-gradient(circle at top left, rgba(87, 212, 255, 0.22), transparent 30%),
    linear-gradient(180deg, #f7fbff 0%, #eef4ff 46%, #f8fbff 100%);
}

.legal-hero {
  padding: 64px 0 88px;
}

.legal-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.legal-card {
  padding: 30px;
  margin-top: -26px;
}

.legal-card + .legal-card {
  margin-top: 22px;
}

.legal-content h2,
.legal-content h3 {
  margin: 28px 0 12px;
  font-size: 1.36rem;
}

.legal-content h3 {
  font-size: 1.12rem;
}

.legal-content p,
.legal-content ul,
.legal-content ol {
  margin: 0 0 14px;
}

.legal-content ul,
.legal-content ol {
  padding-left: 22px;
}

[data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity 0.56s ease,
    transform 0.56s ease;
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1120px) {
  .hero-layout,
  .cta-card {
    grid-template-columns: 1fr;
  }

  .hero-summary,
  .feature-grid,
  .shots-grid,
  .trust-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hero-visual {
    min-height: 620px;
  }

  .floating-card-top {
    left: 8px;
  }

  .floating-card-bottom {
    right: 8px;
  }
}

@media (max-width: 820px) {
  .site-header {
    position: static;
  }

  .nav-wrap {
    min-height: auto;
    padding: 18px 0;
    flex-wrap: wrap;
  }

  .nav-links {
    order: 3;
    width: 100%;
    justify-content: space-between;
    gap: 16px;
    padding-top: 6px;
  }

  .hero {
    padding-top: 30px;
  }

  .hero-title {
    max-width: 100%;
  }

  .hero-summary,
  .feature-grid,
  .shots-grid,
  .support-grid,
  .trust-grid {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    min-height: 540px;
  }

  .board-decor {
    left: 50%;
    width: min(86vw, 390px);
    transform: translateX(-50%);
  }

  .phone-card {
    width: min(340px, 82vw);
  }

  .floating-card {
    max-width: 188px;
    padding: 14px 16px;
  }

  .floating-card-top {
    top: 50px;
    left: 0;
  }

  .floating-card-bottom {
    right: 0;
    bottom: 36px;
  }

  .section {
    padding: 76px 0;
  }

  .cta-card,
  .legal-card {
    padding: 24px;
  }

  .footer-wrap,
  .footer-meta {
    align-items: flex-start;
    flex-direction: column;
  }

  .footer-links {
    justify-content: flex-start;
  }
}

@media (max-width: 560px) {
  .brand-text span {
    display: none;
  }

  .nav-links {
    font-size: 0.9rem;
    overflow-x: auto;
    white-space: nowrap;
    padding-bottom: 4px;
  }

  .nav-download,
  .btn {
    width: 100%;
  }

  .hero-actions,
  .cta-actions {
    flex-direction: column;
  }

  .hero-visual {
    min-height: 500px;
  }

  .floating-card {
    position: static;
    max-width: none;
    margin: 0 auto 12px;
  }

  .phone-stage {
    flex-direction: column;
    justify-content: flex-start;
    padding-top: 24px;
  }

  .phone-card {
    transform: rotate(-2deg);
  }

  .shot-card {
    padding: 12px;
  }
}

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

  [data-reveal],
  .nav-download,
  .btn {
    transition: none;
  }

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