:root {
  --bg: #f8f4ec;
  --surface: #fffdf8;
  --ink: #101828;
  --muted-ink: #2b3648;
  --primary: #0f5ea8;
  --primary-strong: #09457b;
  --accent: #d89a24;
  --accent-soft: #f0c87a;
  --border: #d8d6cf;
}

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

[hidden] {
  display: none !important;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Segoe UI", Arial, Helvetica, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.5;
  font-size: 22px;
}

.container {
  width: min(100%, 980px);
  margin: 0 auto;
  padding: 0 1rem;
}

.site-header {
  background: linear-gradient(160deg, #f6f0e2 0%, #ffffff 48%, #e8f2ff 100%);
  border-bottom: 3px solid var(--accent);
  padding: 2.5rem 0 2rem;
}

.top-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-bottom: 1rem;
}

.top-nav-link {
  display: inline-block;
  text-decoration: none;
  border: 2px solid var(--primary);
  border-radius: 999px;
  background: #ffffff;
  color: var(--primary-strong);
  padding: 0.35rem 0.75rem;
  font-size: clamp(22px, 4.8vw, 24px);
  font-weight: 700;
  line-height: 1.2;
}

.top-nav-link:hover {
  background: #edf4ff;
}

.top-nav-link:focus-visible {
  outline: 3px solid #000000;
  outline-offset: 3px;
}

.top-nav-link.is-active {
  background: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
}

.kicker {
  margin: 0 0 0.4rem;
  font-weight: 700;
  color: var(--primary-strong);
  letter-spacing: 0.02em;
  font-size: clamp(22px, 5.4vw, 28px);
}

h1,
h2,
h3 {
  margin: 0 0 0.8rem;
  line-height: 1.2;
  color: var(--ink);
}

h1 {
  font-size: clamp(34px, 8.6vw, 36px);
}

h2 {
  font-size: clamp(30px, 7.2vw, 34px);
}

h3 {
  font-size: clamp(25px, 6vw, 30px);
}

p {
  margin: 0 0 1rem;
  color: var(--muted-ink);
  font-size: clamp(22px, 5.4vw, 27px);
}

.hero-line {
  font-size: clamp(26px, 6.4vw, 34px);
  color: var(--ink);
  font-weight: 700;
}

.hero-sub {
  max-width: 27ch;
}

.hero-actions {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  margin-top: 1rem;
}

.button-row {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  margin-top: 1rem;
}

.btn {
  display: inline-block;
  text-decoration: none;
  font-weight: 700;
  border-radius: 999px;
  padding: 0.9rem 1.3rem;
  text-align: center;
  border: 3px solid transparent;
  font-size: clamp(22px, 5.4vw, 28px);
  transition: transform 0.15s ease, background-color 0.2s ease, color 0.2s ease;
}

.btn:focus-visible {
  outline: 3px solid #000000;
  outline-offset: 4px;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn[type="submit"] {
  cursor: pointer;
}

.btn-primary {
  background: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
}

.btn-primary:hover {
  background: var(--primary-strong);
  border-color: var(--primary-strong);
}

.btn-secondary {
  background: #ffffff;
  color: var(--primary-strong);
  border-color: var(--primary);
}

.btn-secondary:hover {
  background: #edf4ff;
}

.section {
  padding: 2.2rem 0;
}

.section.alt {
  background: #f2ede3;
}

.section-intro {
  margin-bottom: 1.1rem;
}

.setup-steps {
  margin: 0;
  padding-left: 0;
  list-style: none;
  display: grid;
  gap: 1rem;
}

.prompt-step h3 {
  margin-bottom: 0.5rem;
}

.warning-note {
  background: #fff1cf;
  color: #5a3700;
  border: 2px solid #d89a24;
  border-radius: 14px;
  padding: 0.7rem 0.8rem;
}

.prompt-details {
  margin-top: 0.8rem;
  border: 2px solid var(--border);
  border-radius: 18px;
  background: #fffdfa;
  overflow: hidden;
}

.prompt-details summary {
  cursor: pointer;
  padding: 0.9rem;
  font-weight: 700;
  color: var(--ink);
  background: #f3ecdf;
  border-bottom: 2px solid var(--border);
  font-size: clamp(22px, 5.2vw, 26px);
}

.prompt-actions {
  padding: 0.9rem 0.9rem 0.2rem;
}

.prompt-link {
  width: 100%;
}

.prompt-scroll {
  margin: 0.6rem 0.9rem;
  border: 2px solid #c9c4b7;
  border-radius: 14px;
  background: #fffefb;
  max-height: 420px;
  overflow: auto;
}

.prompt-box {
  margin: 0;
  padding: 0.9rem;
  color: #121212;
  font-family: Consolas, "Courier New", monospace;
  font-size: clamp(22px, 5.1vw, 24px);
  line-height: 1.45;
  white-space: pre-wrap;
}

.placeholder {
  background: #f3cb5f;
  color: #241600;
  padding: 0.05rem 0.25rem;
  border-radius: 8px;
  font-weight: 800;
}

.playbook-caption {
  margin: 0.4rem 0 0.5rem;
  color: #1c2e4a;
  font-weight: 700;
  font-size: clamp(22px, 5.1vw, 24px);
}

.playbook-screenshot {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: 12px;
  border: 1px solid rgba(0, 0, 0, 0.12);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
  margin-top: 12px;
}

.card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.card {
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: 24px;
  padding: 1.1rem;
  box-shadow: 0 4px 12px rgba(16, 24, 40, 0.07);
}

.promise {
  background: linear-gradient(150deg, #fff7e4 0%, #eef6ff 100%);
  border-top: 3px solid var(--accent);
  border-bottom: 3px solid var(--accent);
}

blockquote {
  margin: 0;
  padding: 1.2rem;
  border-left: 8px solid var(--accent);
  background: #fffdf6;
  border-radius: 16px;
  color: var(--ink);
  font-size: clamp(30px, 7.5vw, 36px);
  font-weight: 800;
  line-height: 1.25;
}

.small-note {
  font-size: clamp(22px, 5.2vw, 24px);
}

.login-form {
  display: grid;
  gap: 0.75rem;
}

.form-label {
  font-size: clamp(22px, 5vw, 24px);
  font-weight: 700;
  color: var(--ink);
}

.form-input {
  width: 100%;
  border: 2px solid #7f8aa0;
  border-radius: 12px;
  padding: 0.7rem 0.8rem;
  font-size: clamp(22px, 5vw, 24px);
  color: #0f172a;
  background: #ffffff;
}

.form-input:focus-visible {
  outline: 3px solid #000000;
  outline-offset: 3px;
}

.error-message {
  min-height: 1.5em;
  color: #8f1111;
  font-weight: 700;
}

.site-footer {
  background: #111827;
  padding: 1.3rem 0 1.6rem;
}

.site-footer p {
  color: #f4f7ff;
  font-size: clamp(22px, 5.3vw, 24px);
  margin: 0;
}

@media (min-width: 700px) {
  .top-nav {
    gap: 0.7rem;
  }

  .hero-actions {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .button-row {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .card-grid {
    grid-template-columns: 1fr 1fr;
    gap: 1.2rem;
  }

  .section {
    padding: 2.7rem 0;
  }
}

@media (min-width: 1024px) {
  .container {
    padding: 0 1.5rem;
  }

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