:root {
  --bg: #f6f9fc;
  --card: #ffffff;
  --card-soft: #f3f7fb;
  --line: #dce5ef;
  --text: #162234;
  --muted: #5f6f81;
  --primary: #1ca39e;
  --primary-dark: #15857f;
  --accent: #f3a64b;
  --accent-dark: #d98a2d;
  --shadow: 0 22px 46px rgba(17, 31, 54, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.65 Arial, Helvetica, sans-serif;
  -webkit-font-smoothing: antialiased;
}

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

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

.shell {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.narrow-shell {
  width: min(920px, calc(100% - 32px));
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(246, 249, 252, 0.84);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
}

.nav-shell,
.footer-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.nav-shell {
  min-height: 76px;
}

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

.brand-mark {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: var(--primary);
  color: #fff;
  font-size: 22px;
  font-weight: 800;
}

.brand-copy {
  display: flex;
  flex-direction: column;
  gap: 2px;
  line-height: 1.1;
}

.brand-copy strong {
  font-size: 15px;
  letter-spacing: 0.08em;
}

.brand-copy small {
  color: var(--muted);
  font-size: 10px;
  letter-spacing: 0.18em;
}

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

.site-nav a {
  color: var(--muted);
  font-size: 14px;
  font-weight: 600;
}

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

.nav-cta,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border-radius: 12px;
  border: 1px solid transparent;
  font-size: 14px;
  font-weight: 700;
  transition: background 0.18s ease, transform 0.18s ease, border-color 0.18s ease;
}

.nav-cta {
  background: var(--text);
  color: #fff;
}

.button:hover,
.nav-cta:hover {
  transform: translateY(-1px);
}

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

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

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

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

.button-outline {
  border-color: var(--line);
  background: #fff;
  color: var(--text);
}

.full,
.wide-center {
  width: 100%;
}

.wide-center {
  max-width: 420px;
  margin: 32px auto 0;
}

.hero-section {
  border-bottom: 1px solid var(--line);
}

.hero-grid {
  display: grid;
  align-items: center;
  gap: 48px;
  grid-template-columns: minmax(0, 1fr) minmax(0, 0.92fr);
  padding: 72px 0;
}

.hero-chip {
  display: inline-flex;
  align-items: center;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  color: var(--primary);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero-copy h1 {
  margin: 24px 0 0;
  max-width: 720px;
  font-size: clamp(44px, 5.6vw, 72px);
  line-height: 1.04;
  letter-spacing: -0.05em;
}

.hero-copy h1 span {
  color: var(--primary);
}

.hero-copy p {
  max-width: 560px;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 18px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin-top: 32px;
}

.text-action {
  color: var(--text);
  font-size: 14px;
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.hero-media {
  position: relative;
  justify-self: end;
  width: min(100%, 560px);
}

.hero-image {
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: 28px;
  box-shadow: var(--shadow);
}

.hero-badge {
  position: absolute;
  left: 18px;
  bottom: 18px;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.96);
  box-shadow: var(--shadow);
}

.hero-badge strong {
  display: block;
  color: var(--primary);
  font-size: 34px;
  line-height: 1;
}

.hero-badge span {
  display: block;
  margin-top: 6px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.stats-section {
  border-bottom: 1px solid var(--line);
  background: #fff;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  padding: 28px 0;
}

.stat-card {
  padding: 16px;
  text-align: center;
}

.stat-card strong {
  display: block;
  color: var(--primary);
  font-size: 34px;
  line-height: 1;
}

.stat-card span {
  display: block;
  margin-top: 8px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 600;
}

.content-section {
  padding: 72px 0;
}

.alt-section {
  background: rgba(243, 247, 251, 0.78);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section-heading {
  max-width: 720px;
  margin-bottom: 32px;
}

.section-heading.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.section-heading h2 {
  margin: 0;
  font-size: clamp(32px, 4vw, 42px);
  line-height: 1.12;
}

.section-heading p {
  margin: 14px 0 0;
  color: var(--muted);
}

.why-grid,
.product-grid,
.research-grid,
.verification-grid {
  display: grid;
  gap: 24px;
}

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

.panel,
.product-card,
.research-card,
.verification-box,
.verification-card,
.notice-box {
  border: 1px solid var(--line);
  border-radius: 24px;
  background: #fff;
  box-shadow: var(--shadow);
}

.panel {
  padding: 28px;
}

.panel h3,
.product-card h3,
.research-card h3,
.notice-box h3 {
  margin: 0;
  font-size: 22px;
  line-height: 1.25;
}

.panel p,
.product-card p,
.research-card p,
.notice-box p {
  margin: 16px 0 0;
  color: var(--muted);
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.tag-list span,
.pill {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 0 12px;
  border-radius: 999px;
  background: var(--card-soft);
  color: var(--text);
  font-size: 12px;
  font-weight: 700;
}

.mini-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 18px;
}

.mini-card {
  padding: 16px 12px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--card-soft);
  text-align: center;
}

.mini-card strong,
.verification-card strong {
  display: block;
  font-size: 14px;
}

.mini-card span,
.verification-card span {
  display: block;
  margin-top: 6px;
  color: var(--muted);
  font-size: 12px;
}

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

.product-card,
.research-card {
  padding: 26px;
}

.product-card .pill {
  margin-top: 20px;
  width: fit-content;
  color: #8a5a0b;
  background: rgba(243, 166, 75, 0.16);
}

.verification-box {
  padding: 36px 28px;
}

.verification-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 32px;
}

.verification-card {
  padding: 22px;
  text-align: center;
}

.contact-band {
  background: var(--text);
  color: #fff;
}

.contact-shell {
  padding: 78px 0;
  text-align: center;
}

.contact-shell h2 {
  margin: 0;
  font-size: clamp(32px, 4vw, 44px);
  line-height: 1.12;
}

.contact-shell p {
  max-width: 680px;
  margin: 18px auto 0;
  color: rgba(255, 255, 255, 0.72);
}

.contact-shell .button {
  margin-top: 28px;
}

.notice-section {
  padding: 48px 0;
}

.notice-box {
  border-left: 4px solid var(--accent);
  padding: 24px;
}

.site-footer {
  border-top: 1px solid var(--line);
  background: #fff;
}

.footer-shell {
  padding: 28px 0 36px;
}

.footer-copy {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.8;
  text-align: right;
}

.wa-disabled {
  opacity: 0.55;
  pointer-events: none;
}

@media (max-width: 860px) {
  .hero-grid {
    gap: 28px;
    grid-template-columns: minmax(0, 0.98fr) minmax(320px, 0.82fr);
    padding: 56px 0;
  }

  .hero-copy h1 {
    font-size: 58px;
  }

  .hero-copy p {
    font-size: 16px;
  }
}

@media (max-width: 760px) {
  .nav-shell,
  .footer-shell {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero-grid,
  .why-grid,
  .product-grid,
  .research-grid,
  .verification-grid {
    grid-template-columns: 1fr;
  }

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

  .site-nav {
    flex-wrap: wrap;
  }

  .hero-badge {
    left: 16px;
    bottom: 16px;
  }

  .mini-grid {
    grid-template-columns: 1fr;
  }

  .footer-copy {
    text-align: left;
  }
}

@media (max-width: 640px) {
  .shell,
  .narrow-shell {
    width: min(100% - 24px, 1120px);
  }

  .nav-shell {
    min-height: auto;
    padding: 14px 0;
    align-items: flex-start;
  }

  .site-nav {
    width: 100%;
    justify-content: space-between;
    gap: 14px;
  }

  .hero-grid {
    padding: 44px 0 56px;
  }

  .hero-copy h1 {
    font-size: 40px;
  }

  .hero-copy p {
    font-size: 16px;
  }

  .hero-actions {
    gap: 14px;
  }

  .stats-grid {
    grid-template-columns: 1fr;
  }
}