:root {
  color-scheme: light;
  --ink: #193347;
  --muted: #577082;
  --blue: #1378be;
  --blue-dark: #0a5d97;
  --sky: #e9f6fb;
  --sky-strong: #d8eff8;
  --line: #dae6eb;
  --paper: #ffffff;
  --bg: #f5fafc;
  --cream: #fff8e9;
  --green: #1d7a4a;
  --green-bg: #effaf4;
  --error: #a83232;
  --shadow: 0 18px 50px rgba(19, 61, 85, 0.08);
  font-family: "Hiragino Sans", "Noto Sans JP", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 12% 0%, rgba(19, 120, 190, 0.12), transparent 34rem),
    radial-gradient(circle at 92% 10%, rgba(255, 212, 111, 0.18), transparent 32rem),
    var(--bg);
}

.page {
  width: min(1100px, 100% - 32px);
  margin: 0 auto;
  padding: 34px 0 48px;
}

.demo-banner {
  margin: 0 0 18px;
  padding: 12px 16px;
  border: 1px solid #f0c36b;
  border-radius: 14px;
  background: #fff6db;
  color: #6c4d00;
  font-size: 0.92rem;
}

.hero {
  padding: clamp(18px, 5vw, 46px) 4px 26px;
}

.hero-copy {
  max-width: 780px;
}

.eyebrow,
.section-label {
  margin: 0 0 12px;
  color: var(--blue);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1 {
  margin: 0 0 16px;
  font-size: clamp(2rem, 6.5vw, 4rem);
  line-height: 1.16;
  letter-spacing: -0.04em;
}

h2 {
  margin: 0 0 14px;
  font-size: 1.32rem;
}

h3 {
  margin: 0 0 10px;
  font-size: 1rem;
}

p {
  line-height: 1.72;
}

.lead {
  margin: 0;
  color: var(--muted);
  font-size: clamp(1rem, 2.6vw, 1.14rem);
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 24px;
}

.primary-link,
.secondary-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border-radius: 999px;
  font-weight: 750;
  text-decoration: none;
}

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

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

.secondary-link {
  color: var(--blue-dark);
  background: var(--paper);
  border: 1px solid var(--line);
}

.quick-facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 20px;
}

.quick-facts div {
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.78);
}

.quick-facts strong,
.quick-facts span {
  display: block;
}

.quick-facts strong {
  font-size: 1.03rem;
}

.quick-facts span {
  margin-top: 5px;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.55;
}

.layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 330px;
  gap: 18px;
  align-items: start;
}

.main-column,
.side-column {
  display: grid;
  gap: 18px;
}

.side-column {
  position: sticky;
  top: 18px;
}

.panel {
  padding: clamp(22px, 5vw, 32px);
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--paper);
  box-shadow: 0 4px 24px rgba(19, 61, 85, 0.04);
}

.access-panel {
  border-color: var(--sky-strong);
  box-shadow: var(--shadow);
}

.sub-panel {
  margin: 22px 0;
  padding: 18px;
  border: 1px solid var(--sky-strong);
  border-radius: 18px;
  background: var(--sky);
}

.sub-panel h3 {
  margin-bottom: 6px;
}

.sub-panel p {
  margin: 0;
  color: var(--muted);
}

.stack {
  display: grid;
  gap: 12px;
  margin-top: 20px;
}

.compact-stack {
  margin-top: 14px;
}

label,
legend {
  color: var(--ink);
  font-weight: 700;
}

.field-help {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

input[type="text"],
input[type="email"],
.slot-select {
  width: 100%;
  min-height: 52px;
  padding: 14px;
  border: 1px solid #b9cad2;
  border-radius: 12px;
  color: var(--ink);
  background: var(--paper);
  font: inherit;
}

.slot-select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23577082' stroke-width='2'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 40px;
}

input:focus-visible,
button:focus-visible,
.slot-select:focus-visible,
a:focus-visible {
  outline: 3px solid #b8e4f8;
  outline-offset: 2px;
  border-color: var(--blue);
}

.primary {
  min-height: 52px;
  margin-top: 8px;
  border: 0;
  border-radius: 999px;
  color: white;
  background: var(--blue);
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}

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

.primary:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.secondary-button {
  min-height: 48px;
  margin-top: 4px;
  padding: 0 18px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--blue-dark);
  background: var(--paper);
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}

.secondary-button:hover {
  border-color: var(--blue);
  background: #f7fcff;
}

.secondary-button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.notice {
  padding: 16px 18px;
  border-radius: 16px;
  background: var(--sky);
}

.notice p {
  margin: 7px 0 0;
  font-size: 0.94rem;
}

.pill {
  display: inline-block;
  margin: 0 0 14px;
  padding: 5px 12px;
  border-radius: 20px;
  color: var(--blue-dark);
  background: var(--sky);
  font-size: 0.9rem;
  font-weight: 700;
}

fieldset {
  margin: 2px 0 14px;
  padding: 0;
  border: 0;
}

.slots {
  display: grid;
  gap: 10px;
  margin-top: 12px;
}

.slot-summary {
  margin: 0 0 4px;
  color: var(--blue-dark);
  font-size: 0.9rem;
  font-weight: 700;
}

.check {
  display: flex;
  gap: 9px;
  align-items: flex-start;
  padding-top: 7px;
  font-size: 0.94rem;
  font-weight: 500;
  line-height: 1.6;
}

.check input {
  margin-top: 5px;
}

.message {
  margin: 14px 0 0;
  padding: 12px 14px;
  border-radius: 12px;
  background: #f1f5f7;
}

.info {
  color: #0a5d97;
  background: #e9f6fb;
  border: 1px solid #b8d8ea;
}

.error {
  color: var(--error);
  background: #fff0f0;
}

.success {
  border-color: #bfe5d2;
  background: var(--green-bg);
}

.success a {
  font-weight: 800;
}

.next-steps {
  margin: 18px 0;
  padding: 16px;
  border: 1px solid #cfead9;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.7);
}

.next-steps ul,
.plain-list,
.steps {
  margin: 0;
  padding-left: 1.2em;
}

.next-steps li,
.plain-list li {
  margin: 8px 0;
  line-height: 1.65;
}

.support-line {
  margin-bottom: 0;
}

.guide-card {
  padding: 22px;
}

.steps {
  display: grid;
  gap: 14px;
  padding-left: 1.3em;
}

.steps li::marker {
  color: var(--blue);
  font-weight: 800;
}

.steps strong,
.steps span {
  display: block;
}

.steps span {
  margin-top: 4px;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.65;
}

.plain-list {
  color: var(--muted);
}

.footer {
  padding: 28px 6px 0;
  color: var(--muted);
  font-size: 0.9rem;
}

a {
  color: var(--blue-dark);
}

.document .page {
  width: min(780px, 100% - 32px);
}

.document .panel {
  margin-top: 12px;
}

.prose h2 {
  margin-top: 30px;
}

.prose h2:first-child {
  margin-top: 0;
}

.prose ul {
  padding-left: 1.4em;
  line-height: 1.8;
}

.revision {
  margin-top: 34px;
  color: var(--muted);
  font-size: 0.9rem;
}

@media (max-width: 860px) {
  .layout,
  .quick-facts {
    grid-template-columns: 1fr;
  }

  .side-column {
    position: static;
  }
}

@media (max-width: 560px) {
  .page {
    width: min(100% - 22px, 1100px);
    padding-top: 18px;
  }

  .hero {
    padding-top: 14px;
  }

  .hero-actions {
    display: grid;
  }

  .panel {
    border-radius: 20px;
  }
}