:root {
  --font-display: "Space Grotesk", "Sora", sans-serif;
  --font-body: "Spline Sans", "Sora", sans-serif;
  --bg-base: #f6efe6;
  --surface: #ffffff;
  --surface-soft: #f5eee4;
  --surface-strong: #fff8ee;
  --ink: #1f2933;
  --ink-soft: #55606d;
  --border: #d8cfc3;
  --accent: #0f766e;
  --accent-2: #f97316;
  --accent-3: #0e7490;
  --shadow: 0 24px 60px rgba(31, 41, 55, 0.12);
  --radius: 20px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  color: var(--ink);
  background-color: var(--bg-base);
  background-image:
    radial-gradient(circle at 12% 15%, rgba(15, 118, 110, 0.18), transparent 42%),
    radial-gradient(circle at 88% 8%, rgba(249, 115, 22, 0.16), transparent 40%),
    radial-gradient(circle at 70% 80%, rgba(14, 116, 144, 0.12), transparent 45%),
    linear-gradient(180deg, #f7f1e7 0%, #f2eadf 45%, #efe5d8 100%);
  line-height: 1.6;
  position: relative;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(0deg, rgba(15, 23, 42, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15, 23, 42, 0.04) 1px, transparent 1px);
  background-size: 56px 56px;
  opacity: 0.35;
  pointer-events: none;
  z-index: 0;
}

body::after {
  content: "";
  position: fixed;
  inset: -10% 0 auto 0;
  height: 70%;
  background: radial-gradient(circle at 20% 30%, rgba(15, 118, 110, 0.2), transparent 50%);
  opacity: 0.35;
  pointer-events: none;
  z-index: 0;
}

a {
  color: inherit;
  text-decoration: none;
}

.page {
  position: relative;
  z-index: 1;
  max-width: 1160px;
  margin: 0 auto;
  padding: 32px 24px 72px;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 0 28px;
}

.brand {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-size: 1rem;
}

.site-nav {
  display: flex;
  gap: 18px;
  font-size: 0.95rem;
  color: var(--ink-soft);
}

.site-nav a {
  position: relative;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width 0.3s ease;
}

.site-nav a:hover::after,
.site-nav a:focus::after {
  width: 100%;
}

.pill {
  padding: 10px 18px;
  border-radius: 999px;
  background: var(--surface-strong);
  border: 1px solid var(--border);
  font-size: 0.9rem;
}

.hero {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 32px;
  align-items: center;
  margin-bottom: 48px;
}

.hero-content {
  display: grid;
  gap: 18px;
}

.eyebrow {
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-3);
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 3vw, 3.4rem);
  line-height: 1.1;
  margin: 0;
}

.hero-subtitle {
  font-size: 1.05rem;
  color: var(--ink-soft);
  margin: 0;
}

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

.hero-tags {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.tag {
  background: rgba(15, 118, 110, 0.12);
  color: var(--accent-3);
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 0.85rem;
}

.hero-card {
  background: var(--surface);
  border-radius: 28px;
  border: 1px solid var(--border);
  padding: 24px;
  box-shadow: var(--shadow);
  display: grid;
  gap: 20px;
}

.card-top {
  display: flex;
  gap: 16px;
  align-items: center;
}

.pulse {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 rgba(15, 118, 110, 0.4);
  animation: pulse 2.2s infinite;
}

.card-title {
  font-weight: 600;
}

.card-subtitle {
  color: var(--ink-soft);
  font-size: 0.92rem;
}

.card-list {
  display: grid;
  gap: 14px;
}

.card-row {
  display: flex;
  gap: 12px;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent-2);
  margin-top: 6px;
}

.row-title {
  font-weight: 600;
  margin-bottom: 2px;
}

.row-subtitle {
  color: var(--ink-soft);
  font-size: 0.92rem;
}

.section {
  margin-top: 56px;
}

.section.compact {
  margin-top: 32px;
}

.section-title {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 18px;
}

.section-title h2 {
  margin: 0;
  font-family: var(--font-display);
}

.section-title p {
  margin: 0;
  color: var(--ink-soft);
}

.grid {
  display: grid;
  gap: 18px;
}

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

.grid.three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.panel {
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  padding: 20px;
  box-shadow: 0 12px 24px rgba(31, 41, 55, 0.08);
}

.panel.step {
  min-height: 160px;
}

.step-number {
  font-family: var(--font-display);
  font-size: 1.4rem;
  color: var(--accent);
  margin-bottom: 8px;
}

.field {
  display: grid;
  gap: 8px;
  margin-bottom: 16px;
}

.field-label {
  font-size: 0.9rem;
  color: var(--ink-soft);
}

input[type="text"] {
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid var(--border);
  font-family: var(--font-body);
  font-size: 1rem;
  background: var(--surface-soft);
}

input[type="text"]:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.15);
}

.btn {
  border: none;
  border-radius: 999px;
  padding: 12px 20px;
  font-family: var(--font-body);
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.btn.primary {
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  color: #fff;
  box-shadow: 0 10px 20px rgba(15, 118, 110, 0.25);
}

.btn.ghost {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--ink);
}

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

.form-hint {
  min-height: 18px;
  font-size: 0.85rem;
  color: var(--ink-soft);
}

.form-hint.is-error {
  color: #b42318;
}

.form-hint.is-success {
  color: #047857;
}

.callout {
  margin-top: 16px;
  padding: 14px 16px;
  border-radius: 14px;
  font-size: 0.9rem;
}

.callout.warning {
  background: rgba(249, 115, 22, 0.14);
  border: 1px solid rgba(249, 115, 22, 0.3);
  color: #8a3b06;
}

.list-panel {
  padding: 12px 20px;
}

.topic-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 12px;
}

.topic-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 14px;
  border-radius: 14px;
  background: var(--surface-strong);
  border: 1px solid var(--border);
}

.topic-link {
  font-weight: 600;
}

.topic-date {
  font-size: 0.85rem;
  color: var(--ink-soft);
}

.empty-state {
  padding: 18px 12px;
  color: var(--ink-soft);
}

.topic-hero {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: center;
  margin-bottom: 20px;
}

.topic-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2rem, 3vw, 2.8rem);
}

.topic-subtitle {
  margin: 8px 0 0;
  color: var(--ink-soft);
}

.topic-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.topic-meta {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 18px;
}

.topic-url {
  font-size: 0.9rem;
  color: var(--accent-3);
  word-break: break-all;
}

.giscus-panel {
  min-height: 220px;
}

.help h3 {
  margin-top: 0;
}

.site-footer {
  margin-top: 56px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.9rem;
  color: var(--ink-soft);
}

.reveal {
  animation: fadeUp 0.7s ease both;
  animation-delay: var(--delay, 0s);
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(15, 118, 110, 0.4);
  }
  70% {
    box-shadow: 0 0 0 12px rgba(15, 118, 110, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(15, 118, 110, 0);
  }
}

@media (max-width: 960px) {
  .site-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .site-nav {
    flex-wrap: wrap;
  }

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

  .grid.two,
  .grid.three {
    grid-template-columns: 1fr;
  }

  .topic-hero {
    flex-direction: column;
    align-items: flex-start;
  }

  .site-footer {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}