/* ─── Reset ─────────────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* ─── Tokens ─────────────────────────────────────────────── */
:root {
  --accent:       #0891B2;
  --accent-dark:  #0E7490;
  --accent-tint:  #ECFEFF;
  --text:         #0F172A;
  --text-muted:   #64748B;
  --bg:           #FFFFFF;
  --bg-alt:       #F8FAFC;
  --border:       #E2E8F0;
  --shadow-sm:    0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md:    0 4px 12px rgba(0,0,0,0.08), 0 2px 4px rgba(0,0,0,0.04);
  --radius:       10px;
  --max-w:        1080px;
  --font:         -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
                  "Helvetica Neue", Arial, sans-serif;
}

/* ─── Base ───────────────────────────────────────────────── */
html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  padding-top: 48px;
  transition: padding-top 0.3s ease;
}

body.banner-hidden {
  padding-top: 0;
}

img, svg { display: block; }

/* ─── Container ──────────────────────────────────────────── */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

/* ─── Announcement Banner ────────────────────────────────── */
.banner {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 110;
  background: #0d2b3e;
  padding: 10px 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.banner.hidden {
  transform: translateY(-100%);
  opacity: 0;
  pointer-events: none;
}

.banner-content {
  flex: 1;
  text-align: center;
}

.banner-text {
  font-size: 13px;
  font-weight: 500;
  color: #ffffff;
  line-height: 1.4;
}

.banner-link {
  color: #ffffff;
  text-decoration: underline;
  text-decoration-color: rgba(255, 255, 255, 0.5);
  text-underline-offset: 3px;
  text-decoration-thickness: 1.5px;
  transition: text-decoration-color 0.15s;
  cursor: pointer;
}

.banner-link:hover {
  text-decoration-color: rgba(255, 255, 255, 0.8);
}

.banner-close {
  background: none;
  border: none;
  color: #ffffff;
  cursor: pointer;
  padding: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0.7;
  transition: opacity 0.15s;
  flex-shrink: 0;
}

.banner-close:hover {
  opacity: 1;
}

.banner-close svg {
  width: 16px;
  height: 16px;
}

/* ─── Navigation ─────────────────────────────────────────── */
.nav {
  position: sticky;
  top: 48px;
  z-index: 100;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  transition: top 0.3s ease;
}

body.banner-hidden .nav {
  top: 0;
}

.nav-logo {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text);
  text-decoration: none;
}

.nav-logo span {
  color: var(--accent);
}

.nav-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.15s;
}

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

/* ─── Hero ───────────────────────────────────────────────── */
.hero {
  min-height: calc(100vh - 64px);
  display: flex;
  align-items: center;
  background: linear-gradient(180deg, #ecfeff 0%, #ffffff 55%);
  padding: 80px 24px;
}

.hero-inner {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
}

.hero-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-dark);
  background: var(--accent-tint);
  border: 1px solid #a5f3fc;
  border-radius: 999px;
  padding: 5px 14px;
  margin-bottom: 28px;
}

.hero-logo {
  font-size: clamp(3.5rem, 10vw, 7.5rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1;
  color: var(--text);
  margin-bottom: 28px;
}

.hero-logo span {
  color: var(--accent);
}

.hero-tagline {
  font-size: clamp(1.2rem, 2.5vw, 1.6rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.35;
  color: var(--text);
  margin-bottom: 16px;
}

.hero-sub {
  font-size: clamp(0.95rem, 1.5vw, 1.1rem);
  color: var(--text-muted);
  line-height: 1.7;
  max-width: 520px;
  margin-bottom: 40px;
}

/* ─── Buttons ────────────────────────────────────────────── */
.btn-primary {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  font-size: 0.975rem;
  font-weight: 600;
  text-decoration: none;
  padding: 14px 32px;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition: background 0.15s, transform 0.15s, box-shadow 0.15s;
  box-shadow: 0 2px 8px rgba(8, 145, 178, 0.3);
}

.btn-primary:hover {
  background: var(--accent-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(8, 145, 178, 0.35);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-primary:disabled {
  opacity: 0.65;
  cursor: not-allowed;
  transform: none;
}

.btn-full {
  width: 100%;
  text-align: center;
}

/* ─── Sections ───────────────────────────────────────────── */
.section {
  padding: 96px 0;
}

.section-alt {
  background: var(--bg-alt);
}

.section-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto 64px;
}

.section-header h2 {
  font-size: clamp(1.75rem, 3vw, 2.4rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 14px;
}

.section-header p {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.75;
}

/* ─── Cards ──────────────────────────────────────────────── */
.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: box-shadow 0.2s, transform 0.2s;
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.card-icon {
  width: 46px;
  height: 46px;
  background: var(--accent-tint);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  margin-bottom: 18px;
  flex-shrink: 0;
}

.card h3 {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: 8px;
}

.card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ─── Benefits ───────────────────────────────────────────── */
.benefits {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px 48px;
  max-width: 800px;
  margin: 0 auto;
}

.benefit {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.benefit-check {
  width: 32px;
  height: 32px;
  background: var(--accent-tint);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  flex-shrink: 0;
  margin-top: 2px;
}

.benefit-body h3 {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: 6px;
}

.benefit-body p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ─── Contact form ───────────────────────────────────────── */
.form-wrap {
  max-width: 540px;
  margin: 0 auto;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 20px;
}

.form-group label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text);
}

.form-group input,
.form-group textarea {
  font-family: var(--font);
  font-size: 0.975rem;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 14px;
  width: 100%;
  transition: border-color 0.15s, box-shadow 0.15s;
  outline: none;
  resize: vertical;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: #94A3B8;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(8, 145, 178, 0.12);
}

.form-group textarea {
  min-height: 130px;
}

.form-status {
  margin-top: 14px;
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: 8px;
  text-align: center;
  min-height: 0;
  transition: all 0.2s;
}

.form-status:not(:empty) {
  padding: 12px 16px;
}

.form-status.success {
  background: #f0fdf4;
  color: #166534;
  border: 1px solid #bbf7d0;
}

.form-status.error {
  background: #fef2f2;
  color: #991b1b;
  border: 1px solid #fecaca;
}

.form-note {
  text-align: center;
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-top: 20px;
}

/* ─── Footer ─────────────────────────────────────────────── */
.footer {
  border-top: 1px solid var(--border);
  padding: 32px 0;
}

.footer .container {
  display: flex;
  align-items: center;
  justify-content: center;
}

.footer span {
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* ─── Fade-in animation ──────────────────────────────────── */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ─── Responsive ─────────────────────────────────────────── */
@media (max-width: 900px) {
  .cards {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .section {
    padding: 72px 0;
  }

  .hero {
    padding: 60px 24px;
    min-height: auto;
  }

  .hero-sub br {
    display: none;
  }

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

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

  .section-header {
    margin-bottom: 48px;
  }
}