:root {
  --bg: #eef1f5;
  --panel: #eceef1;
  --surface: #dae1ea;
  --line: #cdcdcd;
  --text: #0f1115;
  --muted: #222830;
  --brand: #3200ff;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: "Inter", "Segoe UI", sans-serif;
  color: var(--text);
  background: var(--surface);
}

.site-shell {
  width: min(1180px, 100%);
  margin: 0 auto;
  background: var(--bg);
  border-left: 1px solid var(--line);
  border-right: 1px solid var(--line);
  box-shadow: 0 0 0 1px rgba(20, 26, 36, 0.08);
}

.container {
  width: min(1120px, calc(100% - 48px));
  margin: 0 auto;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.brand {
  width: 42px;
  height: 42px;
  border: 3px solid var(--text);
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  color: var(--text);
  font-size: 24px;
  font-weight: 800;
  line-height: 1;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-links a {
  text-decoration: none;
  color: var(--text);
  font-weight: 600;
  font-size: 15px;
  border: 1px solid var(--line);
  background: #e3e3e3;
  padding: 8px 14px;
}

.btn {
  border: 0;
  cursor: pointer;
  font: inherit;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn-primary {
  background: var(--brand);
  color: #fff;
  font-weight: 600;
  border: 0;
}

.nav-links .btn-primary {
  padding: 9px 14px;
}

.hero {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 44px;
  align-items: center;
  padding: 52px 0 44px;
  border-bottom: 1px solid var(--line);
}

.hero h1 {
  margin: 0;
  font-size: clamp(2rem, 4.5vw, 3.65rem);
  line-height: 1.1;
  letter-spacing: -0.03em;
  max-width: 17ch;
}

.hero p {
  margin: 22px 0 0;
  font-size: clamp(1.15rem, 2vw, 2.15rem);
  line-height: 1.25;
  max-width: 26ch;
}

.hero .btn-primary {
  margin-top: 26px;
  padding: 14px 22px;
  font-size: 1.08rem;
}

.panel {
  background: #dfdfdf;
  border: 1px solid #cfcfcf;
}

.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 22px;
}

.hero-visual img,
.value-visual img,
.feature-preview img,
.case-visual img,
.cta-visual img,
.logo-row img {
  display: block;
  width: 100%;
  height: auto;
}

.social-proof {
  border-bottom: 1px solid var(--line);
  background: #f0f0f0;
}

.social-proof p {
  margin: 0;
  text-align: center;
  font-size: 1.8rem;
  font-weight: 600;
  padding: 18px 20px 16px;
}

.logo-row {
  border-top: 1px solid var(--line);
  background: #e1e1e1;
  padding: 10px 24px;
}

.value {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 34px;
  align-items: center;
  padding: 44px 0;
  border-bottom: 1px solid var(--line);
}

.value h2,
.comparison h2,
.case-story h2,
.cta h2 {
  margin: 0;
  font-size: clamp(2rem, 4.5vw, 4.2rem);
  line-height: 1.03;
  letter-spacing: -0.03em;
}

.value p {
  margin: 18px 0 0;
  font-size: clamp(1rem, 1.55vw, 1.95rem);
  line-height: 1.34;
  max-width: 38ch;
}

.value-visual {
  padding: 16px;
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
  text-align: center;
  padding: 36px 0 22px;
}

.stat-num {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.8rem);
  font-weight: 800;
}

.stat-label {
  margin: 8px 0 0;
  font-size: clamp(1rem, 1.7vw, 1.75rem);
  font-weight: 700;
}

.features {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  padding: 10px 0 34px;
  border-bottom: 1px solid var(--line);
}

.feature {
  background: #f3f3f3;
  border: 1px solid var(--line);
  text-align: center;
  padding: 16px;
}

.feature h3 {
  margin: 0;
  font-size: 1.5rem;
}

.feature p {
  margin: 10px 0 0;
  font-size: 1.1rem;
  min-height: 52px;
}

.feature .btn-primary {
  margin-top: 14px;
  padding: 10px 16px;
  font-size: 1rem;
}

.feature-detail {
  display: none;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid #d7d9de;
  text-align: left;
  font-size: 0.98rem;
  line-height: 1.45;
}

.feature-detail.is-open {
  display: block;
}

.feature-preview {
  padding: 18px;
  margin-top: 24px;
}

.comparison {
  padding: 52px 0 44px;
  border-bottom: 1px solid var(--line);
}

.comparison h2 {
  font-size: clamp(2rem, 4vw, 3.4rem);
}

.comparison-grid {
  margin-top: 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.comparison-card {
  padding: 24px 20px;
  background: #e6e6e6;
  border: 1px solid #c8c8c8;
}

.comparison-card h3 {
  margin: 0;
  font-size: clamp(1.4rem, 2.3vw, 2.4rem);
}

.comparison-card ul {
  margin: 16px 0 0;
  padding-left: 18px;
}

.comparison-card li {
  margin-bottom: 10px;
  font-size: clamp(1rem, 1.4vw, 1.45rem);
  line-height: 1.35;
}

.case-story {
  padding: 52px 0 44px;
  border-bottom: 1px solid var(--line);
}

.case-grid {
  margin-top: 20px;
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 28px;
  align-items: start;
}

.case-copy h3 {
  margin: 0;
  font-size: clamp(1.4rem, 2.4vw, 2.6rem);
  line-height: 1.15;
}

.case-copy p {
  margin: 14px 0 0;
  font-size: clamp(1rem, 1.35vw, 1.5rem);
  line-height: 1.35;
}

.case-visual,
.cta-visual {
  padding: 10px;
}

.cta {
  padding: 52px 0;
  display: grid;
  grid-template-columns: 1fr 330px;
  gap: 30px;
  align-items: center;
}

.cta h2 {
  font-size: clamp(2rem, 3.6vw, 3.2rem);
  max-width: 18ch;
}

.cta .btn-primary {
  margin-top: 22px;
  padding: 14px 20px;
  font-size: 1.05rem;
}

.footer {
  border-top: 1px solid var(--line);
  padding: 20px 0 28px;
}

.footer p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--muted);
}

[hidden] {
  display: none !important;
}

body.no-scroll {
  overflow: hidden;
}

.contact-modal {
  position: fixed;
  inset: 0;
  z-index: 999;
  display: grid;
  place-items: center;
}

.contact-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(9, 12, 18, 0.55);
}

.contact-panel {
  position: relative;
  width: min(680px, calc(100% - 28px));
  background: #f3f6fb;
  border: 1px solid #c0c7d4;
  border-radius: 8px;
  padding: 22px 20px 18px;
  box-shadow: 0 20px 45px rgba(10, 18, 30, 0.24);
}

.contact-close {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 30px;
  height: 30px;
  border: 1px solid #c0c7d4;
  border-radius: 4px;
  background: #edf2f9;
  font-size: 0.95rem;
  cursor: pointer;
}

.contact-panel h3 {
  margin: 0;
  font-size: 1.7rem;
}

.contact-panel > p {
  margin: 10px 0 0;
  font-size: 0.96rem;
  line-height: 1.35;
}

.contact-form {
  margin-top: 14px;
  display: grid;
  gap: 8px;
}

.contact-form label {
  font-weight: 600;
  font-size: 0.95rem;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  font: inherit;
  border: 1px solid #bcc5d3;
  border-radius: 4px;
  background: #fff;
  padding: 9px 10px;
}

.contact-form textarea {
  resize: vertical;
  min-height: 120px;
}

.contact-form .btn-primary {
  margin-top: 6px;
  justify-self: start;
  padding: 11px 16px;
  font-size: 0.96rem;
}

.contact-note {
  margin: 6px 0 0;
  font-size: 0.92rem;
  min-height: 1.2em;
  color: #223149;
}

@media (max-width: 980px) {
  .container {
    width: min(1120px, calc(100% - 26px));
  }

  .topbar {
    flex-wrap: wrap;
    gap: 12px;
  }

  .hero,
  .value,
  .case-grid,
  .cta {
    grid-template-columns: 1fr;
  }

  .hero {
    gap: 24px;
  }

  .hero h1 {
    max-width: none;
  }

  .hero p {
    max-width: none;
  }

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

  .feature p {
    min-height: 0;
  }

  .case-story,
  .cta,
  .comparison {
    padding-top: 38px;
    padding-bottom: 34px;
  }
}