:root {
  color-scheme: light;
  --paper: #f7f6f2;
  --panel: #ffffff;
  --ink: #1f2a30;
  --muted: #687781;
  --soft: #edf0ee;
  --line: #dde2df;
  --accent: #3d5a6b;
  --accent-dark: #2f4654;
  --warm: #b48a2c;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.75;
}

a {
  color: inherit;
  text-decoration-color: rgba(61, 90, 107, 0.45);
  text-underline-offset: 5px;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(247, 246, 242, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px);
}

.nav {
  width: min(1120px, calc(100vw - 40px));
  min-height: 64px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.brand {
  display: inline-flex;
  align-items: center;
  color: var(--ink);
  text-decoration: none;
  flex: 0 0 auto;
}

.brand-logo {
  width: 156px;
  height: 50px;
  object-fit: contain;
  object-position: left center;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 22px;
  color: var(--muted);
  font-size: 14px;
}

.nav-links a {
  text-decoration: none;
}

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

.wrap {
  width: min(1120px, calc(100vw - 40px));
  margin: 0 auto;
}

.hero {
  padding: 104px 0 96px;
  text-align: center;
}

.hero.compact {
  padding-bottom: 60px;
}

.kicker {
  margin: 0 0 14px;
  color: var(--warm);
  font-size: 13px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 16px;
  color: var(--accent);
  font-size: clamp(38px, 6vw, 58px);
  line-height: 1.15;
  letter-spacing: 0;
}

.subtitle {
  margin: 0 auto;
  max-width: 720px;
  color: #31404a;
  font-size: clamp(20px, 3vw, 28px);
  line-height: 1.45;
  font-weight: 500;
}

.lead {
  margin: 22px auto 0;
  max-width: 760px;
  color: var(--muted);
  font-size: 17px;
}

.section {
  padding: 72px 0;
}

.section.alt {
  background: rgba(255, 255, 255, 0.58);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section-title {
  margin-bottom: 34px;
  text-align: center;
}

.section-title h2 {
  margin-bottom: 10px;
  color: var(--accent);
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1.25;
  letter-spacing: 0;
}

.section-title p {
  max-width: 720px;
  margin: 0 auto;
  color: var(--muted);
}

.product-row {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1fr);
  gap: 58px;
  align-items: center;
  margin-bottom: 90px;
}

.product-row.reverse {
  grid-template-columns: minmax(0, 1fr) minmax(0, 0.95fr);
}

.product-row:last-child {
  margin-bottom: 0;
}

.visual-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: #eef1ef;
  box-shadow: 0 18px 45px rgba(31, 42, 48, 0.08);
}

.visual-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.visual-square {
  aspect-ratio: 1;
}

.visual-phone {
  width: min(330px, 100%);
  aspect-ratio: 9 / 19.5;
  margin: 0 auto;
}

.product-copy h2 {
  margin-bottom: 14px;
  color: var(--accent);
  font-size: clamp(28px, 4vw, 38px);
  line-height: 1.25;
}

.product-copy p {
  color: #43535e;
  font-size: 16px;
}

.note {
  margin: 22px 0 0;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: rgba(255, 255, 255, 0.78);
  color: #34434c;
  font-weight: 600;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.button {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 18px;
  border: 1px solid var(--accent);
  border-radius: 7px;
  color: var(--accent);
  background: transparent;
  text-decoration: none;
  font-size: 15px;
  font-weight: 600;
}

.button.primary {
  color: #fff;
  background: var(--accent);
}

.button:hover {
  border-color: var(--accent-dark);
  color: var(--accent-dark);
}

.button.primary:hover {
  color: #fff;
  background: var(--accent-dark);
}

.product-grid,
.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px;
}

.product-card,
.feature-card,
.faq-card {
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--panel);
}

.product-card,
.feature-card {
  min-height: 210px;
  padding: 24px;
}

.product-card img {
  width: 64px;
  height: 64px;
  margin-bottom: 18px;
  border-radius: 14px;
  object-fit: cover;
}

.product-card h3,
.feature-card h3 {
  margin-bottom: 10px;
  color: var(--accent);
  font-size: 21px;
  line-height: 1.35;
}

.product-card p,
.feature-card p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 15px;
}

.feature-number {
  margin-bottom: 18px;
  color: var(--warm);
  font-family: Georgia, serif;
  font-size: 28px;
}

.pill-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin: 28px auto 0;
  padding: 0;
  list-style: none;
}

.pill-list li {
  padding: 7px 13px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.62);
  color: var(--accent);
  font-size: 14px;
}

.content-block {
  max-width: 880px;
  margin: 0 auto;
  color: #43535e;
  font-size: 17px;
  text-align: center;
}

.content-block p:last-child {
  margin-bottom: 0;
}

.legal {
  max-width: 880px;
  margin: 0 auto;
  display: grid;
  gap: 18px;
}

.legal section {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--panel);
}

.legal h2 {
  margin-bottom: 8px;
  color: var(--accent);
  font-size: 22px;
}

.legal p {
  margin-bottom: 0;
  color: var(--muted);
}

.privacy-band {
  max-width: 860px;
  margin: 0 auto;
  padding: 32px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: rgba(255, 255, 255, 0.72);
  text-align: center;
}

.privacy-band h2 {
  margin-bottom: 12px;
  color: var(--accent);
}

.privacy-band p {
  margin-bottom: 0;
  color: var(--muted);
}

.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: grid;
  gap: 14px;
}

.faq-card {
  padding: 20px 22px;
}

.faq-card h3 {
  margin-bottom: 8px;
  color: var(--accent);
  font-size: 18px;
}

.faq-card p {
  margin-bottom: 0;
  color: var(--muted);
}

.footer {
  padding: 42px 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
  background: rgba(255, 255, 255, 0.44);
  text-align: center;
  font-size: 13px;
}

.footer p {
  margin: 6px 0;
}

@media (max-width: 880px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
    padding: 14px 0;
  }

  .nav-links {
    justify-content: flex-start;
    gap: 14px;
  }

  .hero {
    padding: 76px 0 62px;
  }

  .product-row,
  .product-row.reverse {
    grid-template-columns: 1fr;
    gap: 30px;
    margin-bottom: 70px;
  }

  .product-row.reverse .visual-card {
    order: -1;
  }

  .product-grid,
  .feature-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 560px) {
  .wrap,
  .nav {
    width: min(100% - 28px, 1120px);
  }

  .brand-logo {
    width: 124px;
    height: 42px;
  }

  .nav-links {
    font-size: 13px;
  }

  .section {
    padding: 54px 0;
  }

  .product-grid,
  .feature-grid {
    grid-template-columns: 1fr;
  }

  .product-card,
  .feature-card {
    min-height: auto;
  }

  .actions {
    flex-direction: column;
  }

  .button {
    width: 100%;
  }
}