:root {
  --bg: #f5f3ef;
  --surface: rgba(255, 255, 255, 0.92);
  --surface-strong: #ffffff;
  --ink: #111111;
  --muted: #66605a;
  --line: rgba(17, 17, 17, 0.1);
  --line-strong: rgba(17, 17, 17, 0.18);
  --accent: #8f1116;
  --shadow-soft: 0 14px 36px rgba(0, 0, 0, 0.06);
  --shadow-hover: 0 20px 50px rgba(0, 0, 0, 0.1);
  --max: 1380px;
}

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

body {
  background: var(--bg);
}

img {
  max-width: 100%;
  display: block;
}

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

.page-shell {
  width: min(var(--max), calc(100% - 48px));
  margin: 0 auto;
}

/* =========================================================
   INDEX HERO
========================================================= */

.index-hero {
  padding: 52px 0 28px;
}

.section-kicker {
  margin-bottom: 18px;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(17, 17, 17, 0.52);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) 300px;
  gap: 28px;
  align-items: start;
}

.hero-main h1 {
  margin: 0 0 14px;
  font-size: clamp(38px, 5vw, 58px);
  line-height: 0.95;
  letter-spacing: -0.035em;
  font-weight: 500;
}

.hero-intro {
  max-width: 760px;
  margin: 0;
  font-size: 18px;
  line-height: 1.62;
  color: rgba(17, 17, 17, 0.8);
}

.auth-toggle {
  margin-top: 28px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--surface);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}

.auth-toggle summary {
  list-style: none;
  cursor: pointer;
  padding: 18px 20px;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: rgba(17, 17, 17, 0.78);
  position: relative;
}

.auth-toggle summary::-webkit-details-marker {
  display: none;
}

.auth-toggle summary::after {
  content: "+";
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 18px;
  letter-spacing: 0;
  color: rgba(17, 17, 17, 0.55);
}

.auth-toggle[open] summary::after {
  content: "–";
}

.auth-panel {
  padding: 0 20px 20px;
  border-top: 1px solid var(--line);
}

.auth-panel p {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.66;
  color: rgba(17, 17, 17, 0.8);
}

.hero-stats {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.stat-card {
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--surface-strong);
  padding: 22px 22px 20px;
  box-shadow: var(--shadow-soft);
}

.stat-label {
  font-family: Arial, Helvetica, sans-serif;
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: rgba(17, 17, 17, 0.5);
}

.stat-value {
  margin-top: 10px;
  font-size: clamp(34px, 4vw, 44px);
  line-height: 1.2;
  letter-spacing: -0.04em;
}

.stat-note {
  margin-top: 10px;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(17, 17, 17, 0.54);
}

/* =========================================================
   JUMP SECTION
========================================================= */

.jump-section {
  padding: 0 0 18px;
}

.section-divider {
  height: 1px;
  background: linear-gradient(
    to right,
    transparent,
    rgba(17, 17, 17, 0.14),
    transparent
  );
  margin: 0 0 28px;
}

.section-head {
  margin-bottom: 18px;
}

.section-head h2 {
  margin: 0;
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1.05;
  letter-spacing: -0.025em;
  font-weight: 500;
}

.jump-strip {
  display: flex;
  gap: 12px;
  overflow-x: auto;
  padding: 2px 0 4px;
  scrollbar-width: none;
}

.jump-strip::-webkit-scrollbar {
  display: none;
}

.jump-strip a {
  flex: 0 0 auto;
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.82);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(17, 17, 17, 0.68);
  transition:
    border-color 180ms ease,
    color 180ms ease,
    transform 180ms ease,
    background 180ms ease;
}

.jump-strip a:hover {
  border-color: var(--line-strong);
  color: var(--ink);
  transform: translateY(-1px);
  background: rgba(255, 255, 255, 0.96);
}

/* =========================================================
   MODEL GRID
========================================================= */

.model-grid-section {
  padding: 18px 0 96px;
}

.model-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.model-card {
  display: block;
  border: 1px solid var(--line);
  border-radius: 22px;
  overflow: hidden;
  background: linear-gradient(
    to bottom,
    rgba(255, 255, 255, 0.96),
    rgba(255, 255, 255, 0.88)
  );
  box-shadow: var(--shadow-soft);
  transition:
    transform 180ms ease,
    box-shadow 180ms ease,
    border-color 180ms ease;
}

.model-media {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: #ece8e2;
}

.model-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 260ms ease;
}

.model-body {
  padding: 16px 16px 18px;
}

.model-title {
  font-size: 18px;
  line-height: 1.08;
  letter-spacing: -0.02em;
  font-weight: 500;
}

.model-meta {
  margin-top: 6px;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(17, 17, 17, 0.54);
}

.model-card:hover {
  transform: translateY(-4px);
  border-color: var(--line-strong);
  box-shadow: var(--shadow-hover);
}

.model-card:hover .model-media img {
  transform: scale(1.035);
}

.model-card:hover .model-title {
  color: var(--accent);
}

/* =========================================================
   ACTIONS
========================================================= */

.index-actions {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 96px;
}

.action-box {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 54px;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.84);
  box-shadow: var(--shadow-soft);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(17, 17, 17, 0.72);
  transition:
    border-color 180ms ease,
    transform 180ms ease,
    background 180ms ease;
}

.action-box:hover {
  transform: translateY(-2px);
  border-color: var(--line-strong);
  background: rgba(255, 255, 255, 0.96);
  color: var(--ink);
}

.archive-note {
  margin-top: 14px;
  max-width: 620px;
  font-size: 14px;
  color: var(--muted);
  line-height: 1.6;
}

/* =========================================================
   RESPONSIVE
========================================================= */

@media (max-width: 1100px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }

  .hero-stats {
    max-width: 320px;
  }

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

@media (max-width: 760px) {
  .page-shell {
    width: min(var(--max), calc(100% - 32px));
  }

  .index-hero {
    padding: 34px 0 22px;
  }

  .hero-intro {
    font-size: 16px;
  }

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

  .index-actions {
    grid-template-columns: 1fr;
  }
}