:root {
  --bg: #fbf8f3;
  --bg-soft: #f2eadc;
  --paper: #fffdf8;
  --paper-strong: #ffffff;
  --ink: #201a14;
  --ink-soft: #5f564b;
  --ink-mute: #8f867a;
  --accent: #bf5a21;
  --accent-deep: #934014;
  --accent-soft: #f4dcc8;
  --accent-wash: rgba(191, 90, 33, 0.08);
  --success: #0d7a46;
  --success-soft: #dff2e7;
  --line: #e6ddcf;
  --shadow: 0 18px 38px -24px rgba(56, 39, 22, 0.34);
  --radius: 18px;
  --radius-sm: 12px;
  --max: 1120px;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at top left, rgba(244, 220, 200, 0.8), transparent 32%),
    linear-gradient(180deg, #fcf9f4 0%, #f8f3eb 100%);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic", "Meiryo", sans-serif;
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.container {
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--accent-wash);
  color: var(--accent-deep);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.eyebrow::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
}

/* ---------- Manifesto (AI era reading) ---------- */
.manifesto {
  border-top: none;
  padding: 96px 0 72px;
  text-align: center;
  background:
    radial-gradient(circle at 50% -10%, rgba(244, 220, 200, 0.55), transparent 55%);
}

.manifesto-eyebrow {
  display: inline-block;
  color: var(--accent-deep);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: 18px;
}

.manifesto-title {
  margin: 0 auto 22px;
  max-width: 820px;
  font-size: clamp(26px, 4vw, 42px);
  line-height: 1.35;
  letter-spacing: -0.02em;
  font-weight: 800;
}

.manifesto-title .accent { color: var(--accent); }

.manifesto-body {
  margin: 0 auto 48px;
  max-width: 680px;
  color: var(--ink-soft);
  font-size: clamp(15px, 1.8vw, 18px);
  line-height: 1.9;
}

.manifesto-points {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  text-align: left;
}

.manifesto-point {
  padding: 26px 24px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.manifesto-num {
  display: block;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 12px;
}

.manifesto-point h3 {
  margin: 0 0 10px;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
}

.manifesto-point p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.8;
}

@media (max-width: 760px) {
  .manifesto-points {
    grid-template-columns: minmax(0, 1fr);
  }
}

header.nav {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: saturate(140%) blur(12px);
  background: rgba(252, 249, 244, 0.82);
  border-bottom: 1px solid rgba(230, 221, 207, 0.8);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 74px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
  font-weight: 700;
  font-size: 18px;
}

.brand img {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  box-shadow: var(--shadow);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  margin-left: auto;
}

.nav-links a {
  color: var(--ink-soft);
  font-size: 14px;
  font-weight: 600;
}

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

.nav-login {
  color: var(--ink-soft);
  font-size: 14px;
  font-weight: 700;
  padding: 8px 12px;
}

.nav-signup {
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  background: var(--accent);
  padding: 9px 18px;
  border-radius: 999px;
  box-shadow: var(--shadow);
}

.nav-signup:hover { background: var(--accent-deep); }

@media (max-width: 760px) {
  .nav-links { display: none; }
  .nav-login { display: none; }
}

main {
  overflow: hidden;
}

section {
  padding: 88px 0;
  border-top: 1px solid rgba(230, 221, 207, 0.75);
}

section h2 {
  margin: 0 0 14px;
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.section-lead {
  margin: 0 0 36px;
  max-width: 760px;
  color: var(--ink-soft);
  font-size: 17px;
}

.hero {
  padding: 76px 0 64px;
  border-top: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(320px, 0.85fr);
  gap: 34px;
  align-items: center;
}

.hero-copy h1 {
  margin: 18px 0 18px;
  font-size: clamp(40px, 7vw, 68px);
  line-height: 1.05;
  letter-spacing: -0.04em;
}

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

.hero-manifesto {
  margin: 0 0 18px;
  max-width: 700px;
  font-size: clamp(18px, 2.1vw, 23px);
  line-height: 1.55;
  font-weight: 700;
}

.hero-lead {
  margin: 0 0 28px;
  max-width: 700px;
  color: var(--ink-soft);
  font-size: 18px;
}

.cta-row {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 26px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 52px;
  padding: 0 22px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 700;
  transition: transform .1s ease, box-shadow .16s ease, background .16s ease;
}

.btn:hover {
  text-decoration: none;
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 14px 28px -18px rgba(191, 90, 33, 0.8);
}

.btn-primary:hover {
  background: var(--accent-deep);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid var(--line);
  color: var(--ink);
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 13px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.68);
  color: var(--ink-soft);
  font-size: 13px;
  font-weight: 600;
}

.hero-panel {
  position: relative;
  background: linear-gradient(180deg, rgba(255,255,255,0.96), rgba(248, 243, 235, 0.95));
  border: 1px solid rgba(230, 221, 207, 0.95);
  border-radius: 28px;
  padding: 24px;
  box-shadow: var(--shadow);
}

.hero-panel::after {
  content: "";
  position: absolute;
  inset: 16px;
  border: 1px dashed rgba(191, 90, 33, 0.16);
  border-radius: 20px;
  pointer-events: none;
}

.panel-title {
  margin: 0 0 18px;
  font-size: 14px;
  color: var(--ink-soft);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.transformation {
  display: grid;
  gap: 14px;
}

.transform-step {
  position: relative;
  padding: 18px 18px 18px 54px;
  border-radius: var(--radius);
  background: var(--paper-strong);
  border: 1px solid var(--line);
}

.transform-step::before {
  content: attr(data-step);
  position: absolute;
  left: 16px;
  top: 18px;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
}

.transform-step h3 {
  margin: 0 0 6px;
  font-size: 16px;
}

.transform-step p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.7;
}

.proof-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 22px;
}

.proof-card {
  padding: 16px;
  border-radius: var(--radius-sm);
  background: rgba(191, 90, 33, 0.06);
  border: 1px solid rgba(191, 90, 33, 0.12);
}

.proof-card strong {
  display: block;
  margin-bottom: 4px;
  font-size: 14px;
}

.proof-card span {
  color: var(--ink-soft);
  font-size: 13px;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  align-items: stretch;
}

.plan-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 26px;
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: var(--shadow);
}

.plan-card.highlight {
  background: linear-gradient(180deg, #fff9f4 0%, #ffffff 100%);
  border-color: rgba(191, 90, 33, 0.38);
  transform: translateY(-10px);
}

.plan-badge {
  align-self: flex-start;
  padding: 5px 10px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.plan-badge.free {
  background: var(--success-soft);
  color: var(--success);
}

.plan-badge.paid {
  background: var(--accent-soft);
  color: var(--accent-deep);
}

.plan-badge.featured {
  background: var(--accent);
  color: #fff;
}

.plan-card h3 {
  margin: 0;
  font-size: 24px;
  line-height: 1.1;
}

.plan-role {
  color: var(--ink-soft);
  font-size: 14px;
  min-height: 44px;
}

.price-line {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-top: 6px;
}

.price {
  font-size: 34px;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.price-note {
  color: var(--ink-mute);
  font-size: 13px;
}

.plan-card ul {
  margin: 0;
  padding-left: 18px;
  color: var(--ink-soft);
  font-size: 14px;
}

.plan-card li {
  margin-bottom: 8px;
}

.write-callout {
  margin-top: 28px;
  padding: 24px 26px;
  border-radius: 24px;
  background: linear-gradient(135deg, rgba(191, 90, 33, 0.92), rgba(147, 64, 20, 0.98));
  color: #fff;
  box-shadow: var(--shadow);
}

.write-callout h3 {
  margin: 0 0 10px;
  font-size: 24px;
}

.write-callout p {
  margin: 0;
  color: rgba(255,255,255,0.84);
}

.table-wrap {
  overflow-x: auto;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: var(--shadow);
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 840px;
  background: transparent;
}

.comparison-table th,
.comparison-table td {
  padding: 16px 18px;
  border-bottom: 1px solid var(--line);
  text-align: center;
  font-size: 14px;
  vertical-align: middle;
}

.comparison-table th:first-child,
.comparison-table td:first-child {
  text-align: left;
  font-weight: 700;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.55);
  position: sticky;
  left: 0;
}

.comparison-table thead th {
  background: var(--bg-soft);
  font-size: 13px;
  color: var(--ink-soft);
}

.comparison-table thead th.highlight-col {
  background: rgba(191, 90, 33, 0.14);
  color: var(--accent-deep);
}

.comparison-table tbody td.highlight-col {
  background: rgba(191, 90, 33, 0.06);
}

.comparison-table tr:last-child td {
  border-bottom: none;
}

.diff-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}

.diff-card {
  background: rgba(255,255,255,0.8);
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: 28px;
  box-shadow: var(--shadow);
}

.diff-card h3 {
  margin: 0 0 14px;
  font-size: 22px;
}

.diff-card ul {
  margin: 0;
  padding-left: 18px;
  color: var(--ink-soft);
}

.diff-card li {
  margin-bottom: 10px;
}

.diff-card.primary {
  background: linear-gradient(180deg, rgba(255,255,255,0.88), rgba(244,220,200,0.48));
  border-color: rgba(191, 90, 33, 0.24);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.feature-card {
  background: rgba(255,255,255,0.84);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 24px;
  box-shadow: var(--shadow);
}

.feature-icon {
  width: 46px;
  height: 46px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  background: var(--accent-soft);
  font-size: 22px;
}

.feature-card h3 {
  margin: 0 0 10px;
  font-size: 18px;
}

.feature-card p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 14px;
}

.trial-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 1.1fr);
  gap: 24px;
  align-items: stretch;
}

.trial-card,
.trial-panel {
  border-radius: 24px;
  padding: 28px;
  box-shadow: var(--shadow);
}

.trial-card {
  background: linear-gradient(180deg, rgba(13, 122, 70, 0.94), rgba(10, 96, 54, 0.98));
  color: #fff;
}

.trial-card h3,
.trial-panel h3 {
  margin: 0 0 12px;
  font-size: 24px;
}

.trial-card p {
  margin: 0 0 18px;
  color: rgba(255,255,255,0.82);
}

.trial-list {
  margin: 0;
  padding-left: 18px;
  color: rgba(255,255,255,0.9);
}

.trial-list li {
  margin-bottom: 9px;
}

.trial-panel {
  background: rgba(255,255,255,0.86);
  border: 1px solid var(--line);
}

.trial-panel p {
  margin: 0 0 18px;
  color: var(--ink-soft);
}

.connect-box {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 22px;
  border-radius: 20px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
}

.connect-steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.connect-step {
  padding: 14px;
  border-radius: 16px;
  background: rgba(255,255,255,0.8);
  border: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 13px;
  font-weight: 600;
}

.connect-step strong {
  display: block;
  margin-bottom: 6px;
  color: var(--ink);
  font-size: 12px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.faq details {
  background: rgba(255,255,255,0.86);
  border: 1px solid var(--line);
  border-radius: 20px;
  margin-bottom: 14px;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.faq summary {
  position: relative;
  list-style: none;
  cursor: pointer;
  padding: 20px 56px 20px 22px;
  font-weight: 700;
}

.faq summary::-webkit-details-marker {
  display: none;
}

.faq summary::after {
  content: "+";
  position: absolute;
  right: 22px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--ink-mute);
  font-size: 24px;
  font-weight: 400;
}

.faq details[open] summary::after {
  content: "−";
}

.faq details div {
  padding: 0 22px 20px;
  color: var(--ink-soft);
}

footer {
  padding: 48px 0 72px;
  border-top: 1px solid rgba(230, 221, 207, 0.8);
  text-align: center;
  color: var(--ink-mute);
  font-size: 13px;
}

footer a {
  color: var(--ink-soft);
}

@media (max-width: 1080px) {
  .pricing-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (max-width: 920px) {
  .hero-grid,
  .trial-grid,
  .diff-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero-panel {
    order: -1;
  }

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

@media (max-width: 720px) {
  section {
    padding: 72px 0;
  }

  .container {
    width: min(var(--max), calc(100% - 28px));
  }

  .pricing-grid,
  .feature-grid,
  .proof-strip {
    grid-template-columns: minmax(0, 1fr);
  }

  .plan-card.highlight {
    transform: none;
  }
}

@media (max-width: 560px) {
  .hero {
    padding-top: 52px;
  }

  .hero-copy h1 {
    font-size: 42px;
  }

  .connect-steps {
    grid-template-columns: minmax(0, 1fr);
  }

  .btn {
    width: 100%;
  }
}