:root {
  --bg: #eef0f4;
  --bg-warm: #faf7f4;
  --card: rgba(255, 255, 255, 0.82);
  --text: #253041;
  --subtext: #6f7b8f;
  --accent: #7fb3a2;
  --accent-dark: #5f9988;
  --border: rgba(37, 48, 65, 0.08);
  --hero-pink: rgba(255, 196, 222, 0.35);
  --hero-teal: rgba(176, 224, 220, 0.45);
  --max: 960px;
  --max-wide: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
}

a {
  color: var(--accent-dark);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
  text-underline-offset: 2px;
}

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 20px;
}

/* ── Header ── */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(12px);
  background: rgba(238, 240, 244, 0.85);
  border-bottom: 1px solid var(--border);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 17px;
  color: var(--text);
  text-decoration: none;
}

.logo:hover {
  text-decoration: none;
}

.logo-mark {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  overflow: hidden;
  background: #064237;
  box-shadow: 0 4px 12px rgba(37, 48, 65, 0.12);
}

.logo-mark img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.nav-links {
  display: flex;
  gap: 20px;
  font-size: 14px;
}

.nav-links a {
  color: var(--subtext);
}

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

/* ── Hero ── */

.hero {
  position: relative;
  overflow: hidden;
  padding: 42px 0 64px;
  background: #fbf7f1;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.58), rgba(238, 240, 244, 0.86)),
    radial-gradient(circle at 16% 18%, rgba(255, 236, 224, 0.78), transparent 38%),
    radial-gradient(circle at 86% 28%, rgba(176, 224, 220, 0.42), transparent 38%);
  pointer-events: none;
}

.hero .wrap {
  position: relative;
}

.hero-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.78fr) minmax(520px, 1.22fr);
  gap: 28px;
  align-items: center;
  max-width: var(--max-wide);
}

.hero-copy {
  position: relative;
  z-index: 2;
  padding: 28px 0 18px;
}

.hero-badge {
  display: inline-block;
  margin-bottom: 12px;
  padding: 4px 12px;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent-dark);
  background: rgba(127, 179, 162, 0.14);
  border-radius: 999px;
}

.hero h1 {
  margin: 0 0 16px;
  font-size: clamp(28px, 5vw, 40px);
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.hero-lead {
  margin: 0 0 28px;
  max-width: 520px;
  font-size: 17px;
  color: var(--subtext);
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 20px;
  font-size: 15px;
  font-weight: 600;
  border-radius: 14px;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.btn:hover {
  text-decoration: none;
  transform: translateY(-1px);
}

.btn-primary {
  color: #fff;
  background: var(--accent);
  box-shadow: 0 8px 20px rgba(127, 179, 162, 0.28);
}

.btn-primary:hover {
  background: var(--accent-dark);
}

.btn-ghost {
  color: var(--text);
  background: var(--card);
  border-color: var(--border);
}

.hero-note {
  margin-top: 16px;
  font-size: 13px;
  color: var(--subtext);
}

.trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.trust-row span {
  padding: 5px 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.58);
  color: var(--subtext);
  font-size: 12px;
}

.hero-visual {
  position: relative;
  z-index: 1;
  margin: 0;
  width: min(66vw, 760px);
  aspect-ratio: 1280 / 640;
  justify-self: end;
  border-radius: 46px;
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(255, 251, 246, 0.96), rgba(239, 249, 242, 0.88)),
    radial-gradient(circle at 76% 76%, rgba(127, 179, 162, 0.24), transparent 40%);
  box-shadow: 0 28px 56px rgba(37, 48, 65, 0.08);
}

.hero-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  box-shadow: inset 0 0 0 1px rgba(37, 48, 65, 0.06);
  border-radius: inherit;
}

.hero-visual img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

/* ── Features ── */

.section {
  padding: 48px 0;
}

.section-title {
  margin: 0 0 8px;
  font-size: 24px;
  font-weight: 700;
}

.section-desc {
  margin: 0 0 28px;
  color: var(--subtext);
  max-width: 560px;
}

.features {
  display: grid;
  gap: 16px;
}

.feature {
  padding: 22px 20px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
}

.feature-icon {
  font-size: 22px;
  margin-bottom: 8px;
}

.feature h3 {
  margin: 0 0 6px;
  font-size: 16px;
}

.feature p {
  margin: 0;
  font-size: 14px;
  color: var(--subtext);
}

/* ── Screenshots carousel ── */

.section-screenshots .wrap {
  max-width: var(--max-wide);
}

.carousel {
  position: relative;
  margin-top: 8px;
  outline: none;
}

.carousel:focus-visible {
  box-shadow: 0 0 0 3px rgba(127, 179, 162, 0.35);
  border-radius: 24px;
}

.carousel-viewport {
  overflow: hidden;
  border-radius: 24px;
}

.carousel-track {
  display: flex;
  transition: transform 0.45s cubic-bezier(0.22, 1, 0.36, 1);
}

.carousel-slide {
  flex: 0 0 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 8px 48px 0;
}

.slide-caption {
  margin: 16px 0 0;
  font-size: 14px;
  color: var(--subtext);
  text-align: center;
}

.slide-caption strong {
  color: var(--text);
}

.phone {
  width: min(280px, 72vw);
  padding: 10px;
  background: linear-gradient(145deg, #2a3140, #1a2030);
  border-radius: 36px;
  box-shadow:
    0 24px 48px rgba(37, 48, 65, 0.18),
    inset 0 0 0 1px rgba(255, 255, 255, 0.08);
}

.phone-screen {
  position: relative;
  aspect-ratio: 390 / 844;
  border-radius: 28px;
  overflow: hidden;
  background: var(--bg);
}

.phone-shot {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  z-index: 2;
}

.phone-mock {
  position: absolute;
  inset: 0;
  padding: 14px 16px 18px;
  font-size: 12px;
  color: var(--text);
  z-index: 1;
}

.mock-status {
  height: 10px;
  margin-bottom: 10px;
  border-radius: 999px;
  background: rgba(37, 48, 65, 0.06);
  width: 36%;
}

.mock-nav {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 12px;
}

.mock-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 14px;
}

.mock-tabs span {
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 11px;
  color: var(--subtext);
  background: rgba(255, 255, 255, 0.65);
}

.mock-tabs .is-on {
  color: var(--text);
  background: rgba(127, 179, 162, 0.22);
  font-weight: 600;
}

.mock-slice-card,
.mock-today-card {
  margin-top: 8px;
  padding: 18px 16px;
  border-radius: 18px;
  background: var(--card);
  border: 1px solid var(--border);
  box-shadow: 0 8px 20px rgba(37, 48, 65, 0.05);
}

.mock-slice-label {
  margin: 0 0 6px;
  font-size: 11px;
  color: var(--subtext);
}

.mock-slice-title {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.3;
}

.mock-slice-meta {
  margin: 0 0 14px;
  font-size: 12px;
  color: var(--subtext);
}

.mock-play {
  display: inline-block;
  padding: 8px 18px;
  border-radius: 12px;
  background: var(--accent);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
}

.mock-scene {
  margin: 0 0 8px;
  font-size: 11px;
  color: var(--subtext);
}

.mock-big {
  margin: 0 0 10px;
  font-size: 28px;
  font-weight: 700;
}

.mock-narrative {
  margin: 0 0 16px;
  font-size: 13px;
  line-height: 1.55;
  color: var(--subtext);
}

.mock-bar-row {
  display: flex;
  align-items: flex-end;
  gap: 6px;
  height: 56px;
  margin-top: auto;
  padding-top: 24px;
}

.mock-bar-row span {
  flex: 1;
  height: 28%;
  border-radius: 6px 6px 2px 2px;
  background: rgba(127, 179, 162, 0.35);
}

.mock-bar-row .tall {
  height: 72%;
  background: var(--accent);
}

.mock-ring {
  width: 120px;
  height: 120px;
  margin: 12px auto 16px;
  border-radius: 50%;
  background: conic-gradient(
    var(--accent) 0 38%,
    #9ec5e8 38% 60%,
    #e8b4c8 60% 78%,
    rgba(111, 123, 143, 0.2) 78% 100%
  );
  mask: radial-gradient(circle at center, transparent 52%, #000 53%);
  -webkit-mask: radial-gradient(circle at center, transparent 52%, #000 53%);
}

.mock-legend {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.mock-legend li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
}

.mock-legend span {
  width: 10px;
  height: 10px;
  border-radius: 3px;
  background: var(--c, var(--accent));
}

.carousel-btn {
  position: absolute;
  top: 42%;
  transform: translateY(-50%);
  z-index: 5;
  width: 40px;
  height: 40px;
  border: 1px solid var(--border);
  border-radius: 50%;
  background: var(--card);
  color: var(--text);
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(37, 48, 65, 0.08);
}

.carousel-btn:hover {
  background: #fff;
}

.carousel-btn-prev {
  left: 0;
}

.carousel-btn-next {
  right: 0;
}

.carousel-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 20px;
}

.carousel-dot {
  width: 8px;
  height: 8px;
  padding: 0;
  border: none;
  border-radius: 50%;
  background: rgba(111, 123, 143, 0.35);
  cursor: pointer;
}

.carousel-dot.is-active {
  width: 22px;
  border-radius: 999px;
  background: var(--accent);
}

.screenshots-hint {
  margin: 20px 0 0;
  font-size: 12px;
  color: var(--subtext);
  text-align: center;
}

.screenshots-hint code {
  font-size: 11px;
  padding: 2px 6px;
  border-radius: 6px;
  background: rgba(127, 179, 162, 0.12);
}

/* ── Footer ── */

.site-footer {
  margin-top: 24px;
  padding: 32px 0 48px;
  border-top: 1px solid var(--border);
  font-size: 13px;
  color: var(--subtext);
}

.footer-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  justify-content: space-between;
  align-items: flex-start;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-links a {
  color: var(--subtext);
}

@media (min-width: 720px) {
  .features {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 980px) {
  .hero {
    padding-top: 32px;
  }

  .hero-layout {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .hero-copy {
    order: 2;
    padding-top: 0;
  }

  .hero-visual {
    order: 1;
    width: 100%;
    max-width: 720px;
    justify-self: center;
    border-radius: 34px;
  }

  .hero-lead {
    max-width: 680px;
  }
}

@media (max-width: 600px) {
  .site-header .wrap {
    height: auto;
    min-height: 56px;
    padding-top: 8px;
    padding-bottom: 8px;
    gap: 12px;
  }

  .logo {
    flex: 0 0 auto;
  }

  .nav-links {
    gap: 12px;
    font-size: 13px;
    overflow-x: auto;
    white-space: nowrap;
  }

  .hero {
    padding: 20px 0 44px;
  }

  .hero-visual {
    border-radius: 24px;
  }

  .hero h1 {
    font-size: 32px;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .trust-row span {
    font-size: 11px;
  }

  .carousel-slide {
    padding-left: 36px;
    padding-right: 36px;
  }

  .carousel-btn {
    width: 34px;
    height: 34px;
    font-size: 18px;
  }
}