:root {
  --bg: #f6f8fc;
  --surface: rgba(255,255,255,.78);
  --surface-strong: #ffffff;
  --text: #10203a;
  --muted: #64748b;
  --line: rgba(16,32,58,.08);
  --primary: #1fd1a5;
  --primary-deep: #11b992;
  --accent: #6d7cff;
  --warm: #ff8d6b;
  --shadow: 0 20px 60px rgba(27, 49, 94, .12);
  --radius-xl: 28px;
  --radius-lg: 20px;
  --radius-md: 16px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(109,124,255,.16), transparent 32%),
    radial-gradient(circle at right 10% top 18%, rgba(31,209,165,.18), transparent 28%),
    linear-gradient(180deg, #fbfcff 0%, #f3f6fb 100%);
  line-height: 1.72;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.site-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 22px auto 32px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 18px 22px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,.72);
  backdrop-filter: blur(16px);
  border-radius: 999px;
  box-shadow: 0 10px 30px rgba(25, 43, 74, .06);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
}

.brand-mark {
  width: 40px;
  height: 40px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  box-shadow: 0 10px 24px rgba(31, 209, 165, .28);
}

.brand-text { font-size: 1.04rem; }

.main-nav {
  display: flex;
  gap: 26px;
  color: var(--muted);
  font-size: .96rem;
}

.main-nav a:hover { color: var(--text); }

.ghost-btn,
.primary-btn,
.secondary-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 20px;
  border-radius: 999px;
  font-weight: 700;
  transition: .25s ease;
}

.ghost-btn {
  background: #fff;
  border: 1px solid var(--line);
}

.primary-btn {
  color: #fff;
  background: linear-gradient(135deg, var(--primary-deep), var(--accent));
  box-shadow: 0 14px 30px rgba(79, 109, 255, .24);
}

.secondary-btn {
  background: rgba(255,255,255,.84);
  border: 1px solid var(--line);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 34px;
  align-items: center;
  padding: 54px 6px 38px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
  color: var(--accent);
  font-size: .92rem;
  font-weight: 700;
}

.hero-copy h1 {
  margin: 0;
  font-size: clamp(2.2rem, 4vw, 4.2rem);
  line-height: 1.1;
  letter-spacing: -0.04em;
}

.hero-desc,
.section-head p,
.showcase-text p,
.feature-card p,
.comparison-grid p,
.footer p,
.review-card p,
.faq-list p {
  color: var(--muted);
}

.hero-actions {
  display: flex;
  gap: 14px;
  margin-top: 28px;
}

.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 14px;
  padding: 0;
  margin: 22px 0 0;
  list-style: none;
}

.hero-points li {
  padding: 10px 14px;
  background: rgba(255,255,255,.76);
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: .94rem;
}

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

.phone-frame {
  width: min(360px, 100%);
  padding: 18px;
  border-radius: 36px;
  background: linear-gradient(180deg, #ffffff, #edf3fb);
  border: 1px solid rgba(255,255,255,.8);
  box-shadow: var(--shadow);
}

.phone-top,
.screen-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
}

.phone-top {
  margin-bottom: 14px;
  color: var(--muted);
  font-size: .85rem;
}

.screen-card {
  padding: 18px;
  margin-bottom: 14px;
  border-radius: 22px;
  background: var(--surface-strong);
  border: 1px solid rgba(16,32,58,.06);
}

.live-card {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: linear-gradient(135deg, rgba(31,209,165,.16), rgba(109,124,255,.14));
}

.mini-label {
  margin: 0 0 6px;
  color: var(--muted);
  font-size: .84rem;
}

.live-card h2,
.section-head h2,
.showcase-text h2 {
  margin: 0 0 10px;
  line-height: 1.2;
}

.pulse-dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--warm);
  box-shadow: 0 0 0 0 rgba(255,141,107,.55);
  animation: pulse 1.7s infinite;
}

@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(255,141,107,.55); }
  70% { box-shadow: 0 0 0 14px rgba(255,141,107,0); }
  100% { box-shadow: 0 0 0 0 rgba(255,141,107,0); }
}

.stat-card {
  width: 50%;
}

.stat-card strong {
  display: block;
  font-size: 1.7rem;
  margin-bottom: 6px;
}

.stat-card.soft {
  background: linear-gradient(180deg, rgba(109,124,255,.11), rgba(255,255,255,.9));
}

.list-card ul {
  margin: 10px 0 0;
  padding-left: 18px;
  color: var(--text);
}

.trust-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin: 6px 0 24px;
}

.trust-strip div,
.feature-card,
.panel,
.review-card,
.faq-list details,
.comparison-grid article {
  background: rgba(255,255,255,.76);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: 0 10px 26px rgba(30, 48, 83, .05);
}

.trust-strip div {
  padding: 18px 20px;
}

.trust-strip strong {
  display: block;
  margin-bottom: 6px;
  font-size: 1.06rem;
}

.trust-strip span,
.review-card footer {
  color: var(--muted);
  font-size: .93rem;
}

.section-block {
  padding: 58px 0 18px;
}

.section-head {
  max-width: 820px;
  margin-bottom: 24px;
}

.section-head.narrow { max-width: 680px; }

.feature-grid,
.review-grid,
.comparison-grid {
  display: grid;
  gap: 18px;
}

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

.feature-card {
  padding: 24px;
  position: relative;
  overflow: hidden;
}

.feature-card::after {
  content: "";
  position: absolute;
  inset: auto -22px -22px auto;
  width: 88px;
  height: 88px;
  border-radius: 24px;
  opacity: .15;
}

.accent-a::after { background: var(--primary); }
.accent-b::after { background: var(--accent); }
.accent-c::after { background: var(--warm); }
.accent-d::after { background: #8ad64d; }

.split-showcase {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  align-items: stretch;
  padding: 42px 0 18px;
}

.scene-list {
  list-style: none;
  padding: 0;
  margin: 22px 0 0;
}

.scene-list li {
  display: flex;
  gap: 14px;
  align-items: center;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.scene-list span {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(31,209,165,.22), rgba(109,124,255,.18));
  font-weight: 800;
}

.showcase-panels {
  display: grid;
  gap: 16px;
}

.panel {
  padding: 24px;
}

.panel-main {
  min-height: 220px;
  background: linear-gradient(135deg, rgba(109,124,255,.12), rgba(31,209,165,.12), rgba(255,255,255,.85));
}

.soft-bg {
  margin-top: 18px;
  padding: 36px 24px 18px;
  background: rgba(255,255,255,.48);
  border: 1px solid rgba(16,32,58,.05);
  border-radius: 36px;
}

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

.comparison-grid article,
.review-card {
  padding: 22px;
}

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

.review-card {
  margin: 0;
}

.faq-wrap {
  padding: 58px 0 30px;
}

.faq-list {
  display: grid;
  gap: 14px;
}

.faq-list details {
  padding: 18px 20px;
}

.faq-list summary {
  cursor: pointer;
  font-weight: 700;
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  margin-top: 32px;
  padding: 28px 4px 12px;
  border-top: 1px solid var(--line);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  color: var(--muted);
}

@media (max-width: 1080px) {
  .feature-grid,
  .review-grid { grid-template-columns: repeat(2, 1fr); }
  .trust-strip,
  .comparison-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 860px) {
  .site-shell { width: min(100% - 20px, 1180px); }
  .topbar,
  .hero-grid,
  .split-showcase,
  .footer { grid-template-columns: 1fr; display: grid; }
  .main-nav { flex-wrap: wrap; gap: 14px; }
  .hero-grid { padding-top: 30px; }
}

@media (max-width: 640px) {
  .topbar {
    border-radius: 26px;
    padding: 16px;
  }
  .main-nav,
  .hero-actions,
  .trust-strip,
  .feature-grid,
  .comparison-grid,
  .review-grid,
  .screen-row { grid-template-columns: 1fr; display: grid; }
  .stat-card { width: 100%; }
  .hero-copy h1 { font-size: 2.2rem; }
  .soft-bg { padding-left: 16px; padding-right: 16px; }
}