@charset "utf-8";

:root {
  --bg-grad:
    radial-gradient(90% 140% at 8% -10%, #fff6e6 0%, transparent 60%),
    radial-gradient(95% 130% at 92% 6%, #fde7d2 0%, transparent 62%),
    radial-gradient(90% 140% at 50% 115%, #f6e0c9 0%, transparent 58%),
    linear-gradient(180deg, #f8f2e8 0%, #f3eadf 45%, #faf6f1 100%);
  --grid: rgba(187, 140, 95, 0.05);
  --scan: rgba(187, 140, 95, 0.028);
  --orb1: radial-gradient(circle, rgba(239, 178, 118, 0.5), transparent 70%);
  --orb2: radial-gradient(circle, rgba(245, 209, 164, 0.42), transparent 70%);
  --text: #2b241b;
  --muted: #6f6254;
  --accent: #e07a3f;
  --accent-2: #f2a45f;
  --card: rgba(255, 248, 240, 0.74);
  --card-strong: rgba(255, 252, 246, 0.94);
  --surface-soft: rgba(255, 248, 240, 0.58);
  --border: rgba(189, 160, 126, 0.25);
  --line: rgba(189, 160, 126, 0.2);
  --shadow: 0 18px 40px rgba(96, 74, 50, 0.18);
  --glow: 0 0 16px rgba(224, 122, 63, 0.22);
  --chip-bg: rgba(224, 122, 63, 0.12);
  --chip-border: rgba(224, 122, 63, 0.24);
  --toggle-bg: rgba(255, 255, 255, 0.9);
  --toggle-shadow: 0 12px 26px rgba(119, 89, 58, 0.12);
  --radius-lg: 18px;
  --radius-md: 14px;
  --radius-sm: 12px;
  --font-sans: "Manrope", "Noto Sans SC", sans-serif;
  --font-display: "Fraunces", "Noto Serif SC", serif;
}

html[data-theme="dark"] {
  --bg-grad:
    radial-gradient(100% 140% at 10% 0%, #3a2a1f 0%, transparent 58%),
    radial-gradient(95% 140% at 88% 8%, #2e231a 0%, transparent 62%),
    linear-gradient(180deg, #140f0b 0%, #1c1611 45%, #231a12 100%);
  --grid: rgba(255, 206, 152, 0.06);
  --scan: rgba(255, 206, 152, 0.03);
  --orb1: radial-gradient(circle, rgba(240, 170, 98, 0.35), transparent 70%);
  --orb2: radial-gradient(circle, rgba(255, 216, 173, 0.28), transparent 70%);
  --text: #f7efe6;
  --muted: #c7b7a6;
  --accent: #f2a45f;
  --accent-2: #ffd2a0;
  --card: rgba(28, 20, 14, 0.72);
  --card-strong: rgba(36, 26, 18, 0.9);
  --surface-soft: rgba(28, 20, 14, 0.5);
  --border: rgba(255, 214, 168, 0.16);
  --line: rgba(255, 214, 168, 0.12);
  --shadow: 0 18px 42px rgba(9, 6, 4, 0.55);
  --glow: 0 0 18px rgba(242, 164, 95, 0.18);
  --chip-bg: rgba(242, 164, 95, 0.16);
  --chip-border: rgba(242, 164, 95, 0.3);
  --toggle-bg: rgba(24, 18, 13, 0.7);
  --toggle-shadow: 0 10px 24px rgba(4, 3, 2, 0.6);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  margin: 0;
  font-family: var(--font-sans);
  color: var(--text);
  background: var(--bg-grad);
  line-height: 1.6;
  transition: background 0.35s ease, color 0.35s ease;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 36px 36px;
  opacity: 0.4;
  pointer-events: none;
  mask-image: radial-gradient(circle at 30% 10%, rgba(0, 0, 0, 0.7), transparent 70%);
  z-index: 0;
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  background:
    repeating-linear-gradient(0deg,
      var(--scan) 0,
      var(--scan) 1px,
      transparent 1px,
      transparent 4px);
  opacity: 0.14;
  pointer-events: none;
  mix-blend-mode: screen;
  z-index: 0;
}

.orb {
  position: fixed;
  border-radius: 999px;
  opacity: 0.7;
  filter: blur(0px);
  z-index: 0;
  pointer-events: none;
  animation: float 14s ease-in-out infinite;
}

.orb.a {
  width: 420px;
  height: 420px;
  top: -190px;
  right: -170px;
  background: var(--orb1);
}

.orb.b {
  width: 380px;
  height: 380px;
  bottom: -200px;
  left: -180px;
  background: var(--orb2);
  animation-delay: -4s;
}

.orb.c {
  width: 240px;
  height: 240px;
  top: 42%;
  left: 66%;
  background: radial-gradient(circle, rgba(237, 164, 96, 0.26), transparent 70%);
  opacity: 0.55;
  animation-delay: -7s;
}

.shell {
  position: relative;
  z-index: 1;
  max-width: 1280px;
  margin: 0 auto;
  padding: 32px clamp(18px, 3vw, 36px) 90px;
  display: grid;
  gap: 32px;
}

header.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 16px 20px;
  border-radius: 999px;
  background: var(--surface-soft);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px) saturate(140%);
  flex-wrap: wrap;
}

.brand {
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-family: var(--font-display);
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  color: var(--muted);
  font-size: 0.9rem;
}

.nav a {
  text-decoration: none;
  color: inherit;
  font-weight: 600;
  position: relative;
}

.nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 0%;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transition: width 0.2s ease;
}

.nav a:hover::after {
  width: 100%;
}

.switches {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.toggle {
  display: inline-flex;
  gap: 6px;
  padding: 6px;
  border-radius: 999px;
  background: var(--toggle-bg);
  border: 1px solid var(--border);
  box-shadow: var(--toggle-shadow);
}

.toggle-btn {
  border: none;
  background: transparent;
  padding: 6px 12px;
  border-radius: 999px;
  font-weight: 600;
  color: var(--muted);
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease;
}

.toggle-btn.active {
  background: var(--chip-bg);
  color: var(--accent);
}

a {
  color: inherit;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 18px;
  border-radius: 12px;
  font-weight: 600;
  font-size: 0.9rem;
  border: 1px solid var(--border);
  background: var(--surface-soft);
  color: var(--text);
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn.primary {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  color: #fff7ef;
  box-shadow: var(--glow);
  border: none;
}

.btn.ghost {
  background: var(--surface-soft);
  border-color: var(--border);
}

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

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.95fr);
  gap: 30px;
  align-items: stretch;
}

.hero-side {
  display: grid;
  gap: 16px;
}

.hero-copy {
  display: grid;
  gap: 16px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--chip-bg);
  border: 1px solid var(--chip-border);
  font-weight: 600;
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
}

.hero h1 {
  font-size: clamp(2.6rem, 3vw + 1rem, 3.4rem);
  line-height: 1.1;
  font-family: var(--font-display);
}

.subtitle {
  font-size: 1rem;
  color: var(--muted);
  line-height: 1.7;
}

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

.hero-card {
  background: var(--card-strong);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  padding: 22px;
  display: grid;
  gap: 16px;
  box-shadow: var(--shadow);
}

.today-card {
  gap: 10px;
}

.today-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.today-date {
  font-size: clamp(1.8rem, 2.4vw, 2.4rem);
  font-weight: 600;
  letter-spacing: 0.02em;
  font-family: var(--font-display);
}

.today-week {
  font-size: 0.9rem;
  color: var(--muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.today-lunar {
  color: var(--muted);
  font-size: 0.95rem;
}

.today-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--muted);
  align-items: center;
}

.today-label {
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}

.today-sep {
  opacity: 0.5;
}

.hero-card h3 {
  margin: 0;
  font-family: var(--font-display);
}

.card-stack {
  display: grid;
  gap: 12px;
}

.card-line {
  padding: 10px 12px;
  border-radius: 12px;
  background: var(--surface-soft);
  color: var(--text);
  border: 1px solid var(--border);
  font-size: 0.9rem;
}

.pill {
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--chip-bg);
  color: var(--accent);
  font-weight: 600;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

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

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 14px;
}

.section-title {
  font-size: 1.6rem;
  font-family: var(--font-display);
}

.section-desc {
  color: var(--muted);
  max-width: 520px;
}

.panel {
  position: relative;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 22px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px) saturate(140%);
}

.panel::before {
  content: "";
  position: absolute;
  left: 18px;
  right: 18px;
  top: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line), transparent);
  opacity: 0.8;
}

.panel::after {
  content: "";
  position: absolute;
  top: 0;
  left: -30%;
  height: 1px;
  width: 30%;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  animation: sweep 6s linear infinite;
  opacity: 0.8;
}

.list-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
}

.card {
  display: grid;
  gap: 10px;
  padding: 18px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: var(--surface-soft);
  text-decoration: none;
  color: inherit;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border 0.2s ease;
}

.card:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
  box-shadow: var(--shadow);
}

.card-title {
  font-weight: 600;
  font-size: 1rem;
  font-family: var(--font-display);
}

.card-desc {
  font-size: 0.88rem;
  color: var(--muted);
  line-height: 1.6;
}

.card-meta {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.chip {
  padding: 4px 10px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.7rem;
  background: var(--chip-bg);
  border: 1px solid var(--chip-border);
  color: var(--accent-2);
}

.stack-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.case-figure {
  margin: 0;
  display: grid;
  gap: 12px;
  color: var(--text);
}

.case-diagram {
  width: 100%;
  height: auto;
  display: block;
}

.case-figure figcaption {
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.5;
}

.note {
  font-size: 0.85rem;
  color: var(--muted);
}

.empty {
  padding: 18px;
  border-radius: var(--radius-md);
  border: 1px dashed var(--border);
  text-align: center;
  color: var(--muted);
  background: var(--surface-soft);
}

footer {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--muted);
}

code {
  font-family: "SFMono-Regular", "JetBrains Mono", "Fira Code", monospace;
  font-size: 0.9em;
  padding: 2px 6px;
  border-radius: 6px;
  background: var(--chip-bg);
  border: 1px solid var(--chip-border);
  color: var(--text);
}

.post {
  display: grid;
  gap: 16px;
}

.post h1 {
  font-size: clamp(2rem, 3vw, 2.8rem);
  font-family: var(--font-display);
}

.post-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.post-desc {
  color: var(--muted);
  font-size: 0.95rem;
}

.post-cover img {
  width: 100%;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow);
}

.post-body {
  display: grid;
  gap: 14px;
  font-size: 1rem;
  line-height: 1.8;
}

.post-body h2,
.post-body h3,
.post-body h4 {
  margin-top: 10px;
  font-family: var(--font-display);
}

.post-body ul,
.post-body ol {
  padding-left: 22px;
  display: grid;
  gap: 8px;
}

.post-body blockquote {
  margin: 0;
  padding: 12px 14px;
  border-left: 3px solid var(--accent);
  background: var(--surface-soft);
  border-radius: 12px;
}

.post-body pre {
  margin: 0;
  padding: 14px 16px;
  border-radius: 12px;
  background: var(--card-strong);
  border: 1px solid var(--border);
  overflow: auto;
}

.post-body code {
  background: none;
  padding: 0;
}

[data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 960px) {
  .hero {
    grid-template-columns: 1fr;
  }
  header.topbar {
    flex-direction: column;
    align-items: flex-start;
    border-radius: var(--radius-md);
  }
  .nav {
    gap: 12px;
  }
}

@media (max-width: 640px) {
  header.topbar {
    padding: 14px;
  }
  .hero-card {
    padding: 18px;
  }
  .section-head {
    align-items: flex-start;
  }
  .card {
    padding: 16px;
  }
}

@media (min-width: 1400px) {
  .shell {
    max-width: 1340px;
  }
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(16px);
  }
}

@keyframes sweep {
  0% {
    transform: translateX(-120%);
  }
  100% {
    transform: translateX(220%);
  }
}

@media (prefers-reduced-motion: reduce) {
  [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .orb {
    animation: none;
  }
  .panel::after {
    animation: none;
  }
}