/* ============ RESET & BASE ============ */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

:root {
  --primary: #1b4d36;
  --primary-dark: #123625;
  --primary-soft: #e6f4ed;
  --accent: #2a7a52;
  --ink: #172418;
  --ink-2: #3d5c46;
  --ink-3: #7a9882;
  --line: #d6e3da;
  --line-2: #c4d6ca;
  --bg: #FFFFFF;
  --bg-2: #f7faf8;
  --bg-3: #eef2ef;
  --warn: #F59E0B;
  --shadow-sm: 0 1px 2px rgba(23, 36, 24, 0.06), 0 1px 3px rgba(23, 36, 24, 0.04);
  --shadow-md: 0 4px 12px rgba(23, 36, 24, 0.06), 0 2px 4px rgba(23, 36, 24, 0.04);
  --shadow-lg: 0 12px 32px rgba(23, 36, 24, 0.08), 0 4px 8px rgba(23, 36, 24, 0.04);
  --radius: 12px;
  --radius-lg: 16px;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink-2);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, svg { display: block; max-width: 100%; }
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, h4 { color: var(--ink); font-weight: 700; line-height: 1.2; letter-spacing: -0.015em; }
h2 { font-size: clamp(1.6rem, 3vw, 2.25rem); }
h3 { font-size: 1.15rem; font-weight: 600; }

.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 12px;
}

.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 48px;
}

.section-sub {
  font-size: 1.05rem;
  color: var(--ink-3);
  margin-top: 12px;
}

/* ============ BUTTONS ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 22px;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 600;
  border-radius: 10px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .12s ease, background .15s ease, border-color .15s ease, box-shadow .15s ease;
  text-decoration: none;
  white-space: nowrap;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: var(--shadow-sm);
}
.btn-primary:hover { background: var(--primary-dark); box-shadow: var(--shadow-md); }

.btn-ghost {
  background: transparent;
  color: var(--primary);
  border-color: var(--line-2);
}
.btn-ghost:hover { background: var(--primary-soft); border-color: var(--primary); }

.btn-sm { padding: 9px 16px; font-size: 0.92rem; }
.btn-lg { padding: 17px 30px; font-size: 1.05rem; }
.btn-block { width: 100%; }

/* ============ NAV ============ */
.nav {
  position: relative;
  z-index: 1;
  background: #fff;
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 24px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  color: var(--ink);
  text-decoration: none;
}
.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: var(--primary);
  color: #fff;
  border-radius: 8px;
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.02em;
}
.brand-text { font-size: 1.05rem; }

.nav-links {
  display: flex;
  gap: 28px;
}
.nav-links a {
  color: var(--ink-2);
  font-size: 0.95rem;
  font-weight: 500;
}
.nav-links a:hover { color: var(--primary); text-decoration: none; }

@media (max-width: 720px) {
  .nav-links { display: none; }
}

/* ============ HERO ============ */
.hero {
  position: relative;
  padding: 88px 0 72px;
  background:
    radial-gradient(1200px 400px at 50% -100px, rgba(42, 122, 82, 0.12), transparent 60%),
    linear-gradient(180deg, #F4F9F6 0%, #FFFFFF 100%);
  overflow: hidden;
}
.hero-inner { text-align: center; max-width: 880px; margin: 0 auto; }
.hero-title {
  font-size: clamp(2rem, 4.6vw, 3.4rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  margin-bottom: 20px;
}
.hero-title .accent { color: var(--primary); }
.hero-sub {
  font-size: clamp(1.05rem, 1.6vw, 1.2rem);
  color: var(--ink-3);
  max-width: 680px;
  margin: 0 auto 32px;
}
.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  margin-bottom: 16px;
}
.hero-ctas.center { justify-content: center; }
.hero-meta {
  font-size: 0.88rem;
  color: var(--ink-3);
  margin-bottom: 0;
}

.hero-visitor {
  margin-top: 56px;
  padding-top: 32px;
  border-top: 1px dashed var(--line);
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
}
.visitor-label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--ink-3);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 16px;
}

.hero-variants {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}
.variant-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 18px 20px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  text-align: left;
  color: var(--ink);
  text-decoration: none;
  transition: border-color .15s ease, box-shadow .15s ease, transform .12s ease;
}
.variant-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
  text-decoration: none;
  transform: translateY(-1px);
}
.variant-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 4px 10px;
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 0.78rem;
  font-weight: 700;
  border-radius: 6px;
  letter-spacing: 0.04em;
}
.variant-name {
  flex: 1;
  font-size: 0.98rem;
  font-weight: 500;
  color: var(--ink-2);
}
.variant-arrow {
  color: var(--primary);
  font-weight: 700;
  font-size: 1.1rem;
}

@media (max-width: 560px) {
  .hero { padding: 56px 0 48px; }
  .hero-variants { grid-template-columns: 1fr; }
}

/* ============ DEMO ============ */
.demo { padding: 80px 0; background: var(--bg-2); }
.demo-frame {
  max-width: 960px;
  margin: 0 auto;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  background: #fff;
  border: 1px solid var(--line);
}
.demo-placeholder {
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, #1b4d36 0%, #123625 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.92);
}
.demo-placeholder-inner {
  text-align: center;
  padding: 24px;
}
.demo-placeholder-inner svg {
  margin: 0 auto 16px;
  opacity: 0.85;
}
.demo-placeholder-inner p {
  font-size: 1.1rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 4px;
}
.demo-placeholder-inner span {
  font-size: 0.92rem;
  color: rgba(255, 255, 255, 0.7);
}

/* ============ FEATURES ============ */
.features { padding: 96px 0; background: #fff; }
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}
.feature-card {
  padding: 28px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  transition: border-color .15s ease, box-shadow .15s ease, transform .12s ease;
}
.feature-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.feature-icon {
  width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-soft);
  color: var(--primary);
  border-radius: 10px;
  margin-bottom: 18px;
}
.feature-icon svg { width: 22px; height: 22px; }
.feature-card h3 { margin-bottom: 8px; color: var(--ink); }
.feature-card p { color: var(--ink-3); font-size: 0.96rem; }
.feature-card kbd {
  display: inline-block;
  padding: 1px 6px;
  font-family: ui-monospace, 'SF Mono', Menlo, monospace;
  font-size: 0.82em;
  background: var(--bg-3);
  border: 1px solid var(--line-2);
  border-radius: 4px;
  color: var(--ink);
}

@media (max-width: 920px) {
  .feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 560px) {
  .features { padding: 64px 0; }
  .feature-grid { grid-template-columns: 1fr; }
}

/* ============ CREDIBILITY ============ */
.credibility { padding: 96px 0; background: var(--bg-2); }
.credibility-inner {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 64px;
  align-items: center;
}
.cred-text h2 { margin-bottom: 20px; }
.cred-text p { margin-bottom: 16px; color: var(--ink-2); }
.cred-text .signature {
  margin-top: 24px;
  font-style: italic;
  color: var(--ink-3);
}
.cred-stats {
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.stat {
  padding: 22px 24px;
  background: #fff;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
}
.stat-num {
  display: block;
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: -0.02em;
  margin-bottom: 4px;
}
.stat-label {
  display: block;
  font-size: 0.92rem;
  color: var(--ink-3);
}

@media (max-width: 880px) {
  .credibility { padding: 64px 0; }
  .credibility-inner { grid-template-columns: 1fr; gap: 40px; }
}

/* ============ PLANS ============ */
.plans { padding: 96px 0; background: #fff; }
.plan-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
  align-items: stretch;
}
.plan-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 32px 28px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  transition: border-color .15s ease, box-shadow .15s ease;
}
.plan-card-featured {
  border: 2px solid var(--primary);
  box-shadow: var(--shadow-lg);
  transform: translateY(-8px);
}
.plan-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary);
  color: #fff;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 5px 14px;
  border-radius: 999px;
  letter-spacing: 0.03em;
}
.plan-name {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--ink-3);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 16px;
}
.plan-price { margin-bottom: 8px; }
.plan-price .amount {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--ink);
  letter-spacing: -0.02em;
}
.plan-price .period {
  font-size: 1rem;
  color: var(--ink-3);
  margin-left: 4px;
}
.plan-tagline {
  color: var(--ink-3);
  font-size: 0.95rem;
  margin-bottom: 24px;
  min-height: 2.6em;
}
.plan-list {
  list-style: none;
  margin-bottom: 24px;
  flex: 1;
}
.plan-list li {
  position: relative;
  padding: 8px 0 8px 26px;
  font-size: 0.96rem;
  color: var(--ink-2);
  border-bottom: 1px dashed var(--line);
}
.plan-list li:last-child { border-bottom: none; }
.plan-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 14px;
  width: 16px;
  height: 16px;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%231b4d36' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'><polyline points='20 6 9 17 4 12'/></svg>");
  background-size: contain;
  background-repeat: no-repeat;
}
.plan-list li.muted { color: var(--ink-3); }
.plan-list li.muted::before {
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%237a9882' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'><line x1='5' y1='12' x2='19' y2='12'/></svg>");
}
.plan-foot, .plan-note {
  font-size: 0.85rem;
  color: var(--ink-3);
  text-align: center;
  margin-top: 12px;
}
.plan-note {
  background: var(--bg-3);
  padding: 12px 14px;
  border-radius: 8px;
  text-align: left;
}

@media (max-width: 920px) {
  .plan-grid { grid-template-columns: 1fr; gap: 20px; }
  .plan-card-featured { transform: none; }
  .plans { padding: 64px 0; }
}

/* ============ FAQ ============ */
.faq { padding: 96px 0; background: var(--bg-2); }
.faq-inner { max-width: 780px; margin: 0 auto; }
.faq-list { display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color .15s ease, box-shadow .15s ease;
}
.faq-item[open] {
  border-color: var(--primary);
  box-shadow: var(--shadow-sm);
}
.faq-item summary {
  padding: 18px 22px;
  font-weight: 600;
  color: var(--ink);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  font-size: 1.4rem;
  color: var(--primary);
  font-weight: 400;
  transition: transform .2s ease;
  line-height: 1;
}
.faq-item[open] summary::after { content: "−"; }
.faq-body { padding: 0 22px 20px; color: var(--ink-2); font-size: 0.96rem; }
.faq-body p + p, .faq-body p + ul { margin-top: 10px; }
.faq-body ul { padding-left: 20px; }
.faq-body li { margin-bottom: 4px; }
.faq-body code {
  font-family: ui-monospace, 'SF Mono', Menlo, monospace;
  font-size: 0.88em;
  background: var(--bg-3);
  padding: 1px 6px;
  border-radius: 4px;
}

@media (max-width: 560px) {
  .faq { padding: 64px 0; }
}

/* ============ CTA FINAL ============ */
.cta-final {
  padding: 96px 0;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: #fff;
}
.cta-final-inner { text-align: center; max-width: 720px; margin: 0 auto; }
.cta-final h2 {
  color: #fff;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  margin-bottom: 16px;
}
.cta-final p {
  color: rgba(255, 255, 255, 0.85);
  font-size: 1.05rem;
  margin-bottom: 32px;
}
.cta-final .btn-primary {
  background: #fff;
  color: var(--primary);
}
.cta-final .btn-primary:hover { background: var(--primary-soft); }
.cta-final .btn-ghost {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.4);
}
.cta-final .btn-ghost:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: #fff;
}

@media (max-width: 560px) {
  .cta-final { padding: 64px 0; }
}

/* ============ FOOTER ============ */
.footer {
  padding: 32px 0;
  background: var(--ink);
  color: rgba(255, 255, 255, 0.7);
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-weight: 600;
}
.footer-meta { font-size: 0.9rem; }
.footer-meta a { color: rgba(255, 255, 255, 0.85); }

/* ============ SECTION STACK (videinfra-style sticky cards) ============ */
.hero,
.demo,
.features,
.credibility,
.plans,
.faq,
.cta-final {
  position: sticky;
  top: 0;
}
.demo,
.features,
.credibility,
.plans,
.faq,
.cta-final {
  border-top-left-radius: 32px;
  border-top-right-radius: 32px;
  box-shadow: 0 -10px 30px rgba(23, 36, 24, 0.05);
}
@media (max-width: 720px) {
  .demo,
  .features,
  .credibility,
  .plans,
  .faq,
  .cta-final {
    border-top-left-radius: 22px;
    border-top-right-radius: 22px;
  }
}

/* ============ SCROLL REVEAL ============ */
.js .feature-card,
.js .plan-card,
.js .stat,
.js .faq-item,
.js .cred-text {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .55s cubic-bezier(.2,.6,.3,1), transform .55s cubic-bezier(.2,.6,.3,1);
  will-change: opacity, transform;
}
.js .feature-card.is-visible,
.js .plan-card.is-visible,
.js .stat.is-visible,
.js .faq-item.is-visible,
.js .cred-text.is-visible {
  opacity: 1;
  transform: translateY(0);
}
.js .feature-grid > .feature-card:nth-child(2) { transition-delay: 80ms; }
.js .feature-grid > .feature-card:nth-child(3) { transition-delay: 160ms; }
.js .feature-grid > .feature-card:nth-child(4) { transition-delay: 0ms; }
.js .feature-grid > .feature-card:nth-child(5) { transition-delay: 80ms; }
.js .feature-grid > .feature-card:nth-child(6) { transition-delay: 160ms; }
.js .plan-grid > .plan-card:nth-child(2) { transition-delay: 100ms; }
.js .plan-grid > .plan-card:nth-child(3) { transition-delay: 200ms; }
.js .cred-stats > .stat:nth-child(2) { transition-delay: 100ms; }
.js .cred-stats > .stat:nth-child(3) { transition-delay: 200ms; }

@media (prefers-reduced-motion: reduce) {
  .js .feature-card,
  .js .plan-card,
  .js .stat,
  .js .faq-item,
  .js .cred-text {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
}