:root {
  --bg: #f6f4ef;
  --panel: rgba(255, 255, 255, 0.74);
  --text: #191b1f;
  --muted: #646a77;
  --line: rgba(22, 27, 43, 0.12);
  --brand: #0a7a83;
  --brand-strong: #04535a;
  --glow: 10, 164, 177;
  --radius: 22px;
  --container: min(1120px, 92vw);
  --shadow: 0 18px 48px rgba(14, 24, 36, 0.09);
  --ease: 240ms cubic-bezier(0.21, 0.9, 0.26, 0.98);
}

body.theme-night {
  --bg: #10131a;
  --panel: rgba(20, 25, 35, 0.7);
  --text: #ecf0fb;
  --muted: #abb8d2;
  --line: rgba(218, 230, 255, 0.14);
  --brand: #6ddce2;
  --brand-strong: #95ecf2;
  --glow: 109, 220, 226;
  --shadow: 0 18px 50px rgba(5, 8, 18, 0.52);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "Manrope", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
  min-height: 100vh;
  overflow-x: hidden;
  transition: background-color var(--ease), color var(--ease);
}

.bg-orb {
  position: fixed;
  width: 35vw;
  height: 35vw;
  min-width: 260px;
  min-height: 260px;
  border-radius: 50%;
  filter: blur(55px);
  opacity: 0.26;
  z-index: -1;
  pointer-events: none;
}

.bg-orb-a {
  top: -8vw;
  right: -9vw;
  background: radial-gradient(circle at 30% 30%, rgba(255, 145, 92, 0.6), rgba(255, 145, 92, 0));
  animation: floatA 14s ease-in-out infinite;
}

.bg-orb-b {
  left: -12vw;
  bottom: -8vw;
  background: radial-gradient(circle at 68% 38%, rgba(36, 175, 194, 0.62), rgba(36, 175, 194, 0));
  animation: floatB 16s ease-in-out infinite;
}

@keyframes floatA {
  0%,
  100% {
    transform: translate(0, 0) scale(1);
  }
  50% {
    transform: translate(-2.2vw, 1.8vw) scale(1.06);
  }
}

@keyframes floatB {
  0%,
  100% {
    transform: translate(0, 0) scale(1);
  }
  50% {
    transform: translate(2vw, -2vw) scale(1.08);
  }
}

.site-header {
  width: var(--container);
  margin: 0 auto;
  padding: 1.25rem 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1.25rem;
  position: sticky;
  top: 0;
  backdrop-filter: blur(10px);
  z-index: 30;
}

.brand {
  text-decoration: none;
  color: inherit;
  display: grid;
  gap: 0.12rem;
}

.brand-mark {
  font-family: "Syne", "Avenir Next", sans-serif;
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: 0.07em;
}

.brand-sub {
  font-size: 0.77rem;
  color: var(--muted);
}

.nav {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.86rem;
  border-bottom: 1px solid transparent;
  transition: color var(--ease), border-color var(--ease);
}

.nav a:hover {
  color: var(--text);
  border-color: var(--line);
}

main,
.site-footer {
  width: var(--container);
  margin: 0 auto;
}

.hero {
  padding: 3.2rem 0 1rem;
}

.eyebrow,
.kicker {
  margin: 0;
  color: var(--brand);
  font-size: 0.82rem;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  font-weight: 700;
}

.hero h1 {
  margin: 0.65rem 0 0;
  font-family: "Syne", "Avenir Next", sans-serif;
  font-size: clamp(2.2rem, 9.2vw, 5.4rem);
  line-height: 0.96;
  letter-spacing: -0.03em;
  max-width: 12ch;
}

.hero-sub {
  margin: 1.35rem 0 0;
  max-width: 64ch;
  color: var(--muted);
  font-size: clamp(1.02rem, 2.6vw, 1.22rem);
}

.hero-sub strong {
  color: var(--text);
}

.hero-cta {
  margin-top: 1.45rem;
  display: flex;
  gap: 0.72rem;
  flex-wrap: wrap;
}

.btn {
  appearance: none;
  text-decoration: none;
  border-radius: 999px;
  padding: 0.7rem 1.12rem;
  border: 1px solid var(--line);
  font-weight: 700;
  font-size: 0.88rem;
  transition: transform var(--ease), box-shadow var(--ease), border-color var(--ease), background-color var(--ease), color var(--ease);
}

.btn:hover {
  transform: translateY(-1px) scale(1.02);
}

.btn:active {
  transform: translateY(0) scale(0.985);
}

.btn-primary {
  background: var(--brand);
  color: #ffffff;
  border-color: transparent;
  box-shadow: 0 8px 22px rgba(var(--glow), 0.22);
}

.btn-primary:hover {
  box-shadow: 0 10px 28px rgba(var(--glow), 0.34);
}

.btn-ghost {
  color: var(--text);
  background: transparent;
}

.hero-meta {
  margin-top: 1.05rem;
  color: var(--muted);
  font-size: 0.84rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.section {
  padding: 4.2rem 0 0.7rem;
}

.section-heading {
  display: grid;
  gap: 0.38rem;
  margin-bottom: 1.1rem;
}

.section-heading h2 {
  margin: 0;
  font-family: "Syne", "Avenir Next", sans-serif;
  line-height: 1.2;
  letter-spacing: -0.02em;
  text-wrap: balance;
  padding-bottom: 0.08em;
  font-size: clamp(1.5rem, 5vw, 2.65rem);
}

.bento-grid {
  margin-top: 0;
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 1rem;
}

.card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  backdrop-filter: blur(8px);
  box-shadow: var(--shadow);
  padding: 1.15rem;
  position: relative;
  overflow: hidden;
  transition: transform var(--ease), border-color var(--ease), box-shadow var(--ease);
}

.card::after {
  content: "";
  position: absolute;
  inset: auto auto -40px -40px;
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(var(--glow), 0.25), transparent 70%);
  opacity: 0;
  transition: opacity var(--ease);
}

.card:hover {
  transform: translateY(-4px);
  border-color: rgba(var(--glow), 0.34);
}

.card:hover::after {
  opacity: 1;
}

.card-label {
  margin: 0;
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--muted);
  text-transform: uppercase;
}

.card h3 {
  margin: 0.48rem 0 0.5rem;
  font-size: 1.1rem;
}

.hint {
  margin: 0.6rem 0 0;
  color: var(--muted);
  font-size: 0.86rem;
}

.card-status {
  grid-column: span 4;
}

.card-stats {
  grid-column: span 5;
}

.card-tools {
  grid-column: span 7;
}

.card-links {
  grid-column: span 5;
}

.status-text {
  font-weight: 700;
  color: var(--text);
}

.stats-list {
  margin: 0.25rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.42rem;
}

.stats-list li {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  border-bottom: 1px dashed var(--line);
  padding-bottom: 0.4rem;
}

.stats-list li span {
  color: var(--muted);
}

.stats-list li strong {
  font-family: "Syne", sans-serif;
  font-size: 1.12rem;
}

.card-links {
  display: flex;
  flex-direction: column;
  gap: 0.56rem;
}

.card-links a {
  text-decoration: none;
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.56rem 0.7rem;
  transition: background-color var(--ease), border-color var(--ease);
}

.card-links a:hover {
  background: rgba(var(--glow), 0.08);
  border-color: rgba(var(--glow), 0.28);
}

.chip-marquee {
  margin-top: 0.45rem;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 0.45rem;
  background: rgba(var(--glow), 0.03);
  display: grid;
  gap: 0.4rem;
}

.marquee-row {
  overflow: hidden;
  border-radius: 999px;
}

.chip-track {
  display: flex;
  width: max-content;
  gap: 0.5rem;
  animation: chipScroll 26s linear infinite;
}

.marquee-row-reverse .chip-track {
  animation-direction: reverse;
  animation-duration: 31s;
}

.chip-track span {
  border-radius: 999px;
  border: 1px solid var(--line);
  padding: 0.28rem 0.62rem;
  font-size: 0.78rem;
  color: var(--muted);
  white-space: nowrap;
}

@keyframes chipScroll {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-50%);
  }
}

.mistake-list {
  margin-top: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.9rem;
}

.mistake-list article {
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 1rem;
  background: var(--panel);
}

.mistake-list h3 {
  margin: 0;
  font-size: 1.02rem;
}

.mistake-list p {
  margin: 0.55rem 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.flow-desc {
  margin: 0;
  color: var(--muted);
}

.flow-board {
  margin-top: 0.9rem;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--panel);
  padding: 1.1rem;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  align-items: center;
  gap: 0.65rem;
}

.node {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 0.85rem 0.7rem;
  text-align: center;
  font-size: 0.85rem;
  background: rgba(var(--glow), 0.05);
  min-height: 70px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.line {
  height: 1px;
  background-image: linear-gradient(90deg, transparent, rgba(var(--glow), 0.68), transparent);
  animation: pulseLine 2.4s ease-in-out infinite;
}

@keyframes pulseLine {
  0%,
  100% {
    opacity: 0.36;
  }
  50% {
    opacity: 0.95;
  }
}

.comment-wall {
  margin-top: 0;
  border: 1px solid var(--line);
  border-radius: 20px;
  overflow: hidden;
  padding: 0.65rem;
  background: var(--panel);
  display: grid;
  gap: 0.55rem;
}

.comment-track {
  display: flex;
  width: max-content;
  animation: commentsMove 34s linear infinite;
  gap: 0.8rem;
}

.marquee-row-reverse .comment-track {
  animation-direction: reverse;
  animation-duration: 38s;
}

.comment-track span {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.35rem 0.7rem;
  white-space: nowrap;
  font-size: 0.84rem;
  color: var(--text);
  background: rgba(var(--glow), 0.07);
}

@keyframes commentsMove {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-50%);
  }
}

.faq details {
  border-top: 1px solid var(--line);
  padding: 0.95rem 0;
}

.faq summary {
  cursor: pointer;
  font-weight: 700;
}

.faq p {
  margin: 0.45rem 0 0;
  color: var(--muted);
}

.site-footer {
  border-top: 1px solid var(--line);
  margin-top: 3.5rem;
  padding: 2.8rem 0 3.2rem;
  text-align: center;
}

.site-footer h2 {
  margin: 0.9rem 0 0;
  font-family: "Syne", sans-serif;
  font-size: clamp(1.5rem, 5vw, 2.35rem);
  line-height: 1.08;
}

.site-footer p {
  margin: 0.72rem auto 0;
  max-width: 50ch;
  color: var(--muted);
}

.site-footer small {
  display: block;
  margin-top: 1.25rem;
  color: var(--muted);
}

.coffee {
  width: 74px;
  margin: 0 auto;
}

.coffee svg {
  width: 100%;
  stroke: var(--text);
  fill: none;
  stroke-width: 4;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 600ms ease, transform 600ms ease;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1024px) {
  .card-status,
  .card-stats,
  .card-tools,
  .card-links {
    grid-column: span 6;
  }

  .mistake-list {
    grid-template-columns: 1fr 1fr;
  }

  .flow-board {
    grid-template-columns: 1fr;
  }

  .line {
    height: 34px;
    width: 1px;
    margin: 0 auto;
    background-image: linear-gradient(180deg, transparent, rgba(var(--glow), 0.68), transparent);
  }
}

@media (max-width: 760px) {
  .site-header {
    position: static;
    padding-top: 1rem;
    flex-direction: column;
    align-items: flex-start;
  }

  .hero {
    padding-top: 1.55rem;
  }

  .hero h1 {
    max-width: 100%;
  }

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

  .card-status,
  .card-stats,
  .card-tools,
  .card-links {
    grid-column: span 1;
  }

  .mistake-list {
    grid-template-columns: 1fr;
  }

  .hero-meta {
    flex-direction: column;
    gap: 0.25rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
}