/* ================================================
   大神视界 Site Kit — Shared Stylesheet
   Cyberpunk × Ukiyo-e · /assets/site.css
   ================================================ */

/* ---------- 1. Reset ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  background: var(--bg-deep);
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}

body {
  min-height: 100vh;
  background: var(--bg-deep);
  color: var(--text-bright);
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 300;
  line-height: 1.8;
  letter-spacing: 0.02em;
  overflow-x: hidden;
}

img,
svg,
video {
  display: block;
  max-width: 100%;
  height: auto;
}

ul,
ol {
  list-style: none;
}

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

button {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-title);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

::selection {
  background: rgba(255, 46, 151, 0.4);
  color: var(--text-bright);
}

/* ---------- 2. Design Tokens ---------- */
:root {
  --bg-deep: #0B0512;
  --bg-panel: #1A0F22;
  --bg-panel-2: #221329;
  --accent-primary: #FF2E97;
  --accent-secondary: #00D9FF;
  --accent-status: #FF4A3D;
  --accent-gold: #F4C95D;
  --text-bright: #F2EAF5;
  --text-muted: #C0ADC8;
  --border-neon: rgba(0, 217, 255, 0.22);
  --border-pink: rgba(255, 46, 151, 0.30);
  --border-gold: rgba(244, 201, 93, 0.35);
  --shadow-hard: 6px 6px 0 rgba(0, 0, 0, 0.65);
  --shadow-panel: 0 18px 50px rgba(0, 0, 0, 0.50);
  --font-title: 'Pretendard', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-body: 'Noto Sans SC', 'Helvetica Neue', Arial, sans-serif;
  --font-code: 'Roboto Mono', 'SFMono-Regular', monospace;
  --container-w: 1440px;
  --header-h: 76px;
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 40px;
  --space-5: 64px;
  --space-6: 104px;
  --radius: 16px;
  --radius-sm: 8px;
}

/* ---------- 3. Ambient Background ---------- */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background:
    radial-gradient(1px 1px at 12% 28%, rgba(242,234,245,0.50) 0, transparent 100%),
    radial-gradient(1px 1px at 28% 72%, rgba(0,217,255,0.50) 0, transparent 100%),
    radial-gradient(1.5px 1.5px at 64% 18%, rgba(255,46,151,0.55) 0, transparent 100%),
    radial-gradient(1px 1px at 82% 58%, rgba(244,201,93,0.45) 0, transparent 100%),
    radial-gradient(1px 1px at 44% 88%, rgba(242,234,245,0.30) 0, transparent 100%),
    radial-gradient(ellipse at 74% 18%, rgba(255,46,151,0.10) 0%, transparent 48%),
    radial-gradient(ellipse at 18% 82%, rgba(0,217,255,0.08) 0%, transparent 50%),
    var(--bg-deep);
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    linear-gradient(rgba(0,217,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,217,255,0.04) 1px, transparent 1px);
  background-size: 52px 52px;
  -webkit-mask-image: linear-gradient(to bottom, rgba(0,0,0,0.65), transparent 75%);
  mask-image: linear-gradient(to bottom, rgba(0,0,0,0.65), transparent 75%);
}

/* ---------- 4. Focus & Skip Link ---------- */
:focus-visible {
  outline: 2px solid var(--accent-secondary);
  outline-offset: 4px;
  border-radius: 4px;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 2500;
  padding: 12px 20px;
  background: var(--accent-secondary);
  color: var(--bg-deep);
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.9rem;
  line-height: 1;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-hard);
  transform: translateY(-180%);
  transition: transform 0.25s ease;
}

.skip-link:focus {
  transform: translateY(0);
}

/* ---------- 5. Layout Primitives ---------- */
#main-content {
  position: relative;
  min-height: 70vh;
  padding-top: var(--header-h);
}

.container {
  width: 100%;
  max-width: var(--container-w);
  margin-inline: auto;
  padding-inline: var(--space-4);
}

.section {
  padding-block: var(--space-5);
}

.section--tight {
  padding-block: var(--space-4);
}

.divider {
  display: flex;
  align-items: center;
  gap: 16px;
  margin: var(--space-4) 0;
  color: var(--accent-gold);
  font-family: var(--font-code);
  font-size: 0.78rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.divider::before,
.divider::after {
  content: "";
  height: 1px;
  flex: 1;
  background: linear-gradient(90deg, transparent, var(--border-neon), transparent);
}

.grid {
  display: grid;
  gap: var(--space-3);
}

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

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

/* ---------- 6. Typography Helpers ---------- */
.title-xl {
  font-family: var(--font-title);
  font-weight: 900;
  font-size: clamp(2.4rem, 6vw, 4.6rem);
  line-height: 1.04;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-3);
}

.title-lg {
  font-family: var(--font-title);
  font-weight: 900;
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-2);
}

.title-md {
  font-family: var(--font-title);
  font-weight: 900;
  font-size: clamp(1.1rem, 2vw, 1.5rem);
  letter-spacing: -0.02em;
}

.lead {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 56ch;
  line-height: 1.9;
}

.caption {
  font-family: var(--font-code);
  font-size: 0.78rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}

/* ---------- 7. Prose ---------- */
.prose {
  font-size: 1rem;
  color: var(--text-muted);
  line-height: 1.9;
}

.prose > *:first-child {
  margin-top: 0;
}

.prose h1,
.prose h2,
.prose h3 {
  color: var(--text-bright);
  margin: 1.6em 0 0.6em;
}

.prose h1 { font-size: 2rem; }
.prose h2 { font-size: 1.4rem; }
.prose h3 { font-size: 1.15rem; }

.prose p {
  margin-bottom: 1em;
}

.prose ul {
  margin: 0 0 1.2em;
  padding-left: 1.4em;
  list-style: square;
}

.prose ul li::marker {
  color: var(--accent-secondary);
}

.prose a {
  color: var(--accent-secondary);
  border-bottom: 1px solid rgba(0, 217, 255, 0.4);
  transition: color 0.2s ease, border-color 0.2s ease;
}

.prose a:hover {
  color: var(--text-bright);
  border-color: var(--accent-secondary);
}

.prose blockquote {
  margin: var(--space-3) 0;
  padding: var(--space-3) var(--space-4);
  border-left: 3px solid var(--accent-gold);
  background: rgba(244, 201, 93, 0.06);
  color: var(--text-bright);
}

.prose code {
  font-family: var(--font-code);
  font-size: 0.85em;
  color: var(--accent-gold);
}

/* ---------- 8. Buttons, Tags, Breadcrumb ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 28px;
  font-family: var(--font-title);
  font-weight: 900;
  font-size: 0.92rem;
  letter-spacing: 0.05em;
  line-height: 1.2;
  color: var(--text-bright);
  background: var(--bg-panel);
  border: 1px solid var(--border-neon);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: border-color 0.25s ease, color 0.25s ease, background 0.25s ease, box-shadow 0.25s ease, filter 0.25s ease;
}

.btn:hover {
  color: var(--accent-secondary);
  border-color: var(--accent-secondary);
  box-shadow: 0 0 18px rgba(0, 217, 255, 0.18);
}

.btn--primary {
  color: #FFF;
  background: var(--accent-primary);
  border-color: var(--accent-primary);
  border-radius: 0;
  clip-path: polygon(12px 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%, 0 12px);
}

.btn--primary:hover {
  color: #FFF;
  filter: brightness(1.12);
  box-shadow: 0 0 26px rgba(255, 46, 151, 0.4);
}

.btn--ghost {
  background: transparent;
  border-color: rgba(242, 234, 245, 0.2);
}

.btn--ghost:hover {
  color: var(--text-bright);
  border-color: rgba(242, 234, 245, 0.5);
  box-shadow: none;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 14px;
  font-family: var(--font-code);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  line-height: 1.4;
  color: var(--text-muted);
  background: rgba(0, 217, 255, 0.05);
  border: 1px solid var(--border-neon);
  border-radius: 999px;
  transition: background 0.25s ease, color 0.25s ease, border-color 0.25s ease;
}

.tag:hover {
  color: var(--accent-secondary);
  border-color: rgba(0, 217, 255, 0.55);
  background: rgba(0, 217, 255, 0.10);
}

.tag--gold {
  color: var(--accent-gold);
  border-color: var(--border-gold);
  background: rgba(244, 201, 93, 0.06);
}

.tag--gold:hover {
  border-color: rgba(244, 201, 93, 0.6);
  color: var(--accent-gold);
  background: rgba(244, 201, 93, 0.12);
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  padding: var(--space-2) 0;
  font-family: var(--font-code);
  font-size: 0.78rem;
  color: var(--text-muted);
}

.breadcrumb__item {
  display: inline-flex;
  align-items: center;
}

.breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  margin: 0 10px;
  color: rgba(192, 173, 200, 0.5);
}

.breadcrumb__link {
  color: var(--accent-secondary);
  transition: color 0.2s ease;
}

.breadcrumb__link:hover {
  color: var(--text-bright);
}

.breadcrumb__item[aria-current="page"] {
  color: var(--text-bright);
}

/* ---------- 9. Cards & Frames ---------- */
.card-surface {
  position: relative;
  background: var(--bg-panel);
  border: 1px solid var(--border-neon);
  border-radius: var(--radius);
  box-shadow: var(--shadow-panel);
  padding: var(--space-4);
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.card-surface:hover {
  transform: translateY(-3px);
  border-color: rgba(0, 217, 255, 0.45);
  box-shadow: var(--shadow-panel), 0 0 24px rgba(0, 217, 255, 0.10);
}

.file-card {
  position: relative;
  background: linear-gradient(145deg, var(--bg-panel-2) 0%, var(--bg-panel) 100%);
  border: 1px solid var(--border-neon);
  box-shadow: var(--shadow-hard);
  padding: var(--space-4);
  padding-top: var(--space-5);
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.file-card::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 20px;
  width: 64px;
  height: 12px;
  background: var(--accent-primary);
  border: 1px solid rgba(255, 46, 151, 0.5);
  border-bottom: none;
  box-shadow: 0 -2px 8px rgba(255, 46, 151, 0.25);
}

.file-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 217, 255, 0.5);
  box-shadow: 10px 12px 0 rgba(0, 0, 0, 0.6), 0 0 24px rgba(0, 217, 255, 0.12);
}

.poster-frame {
  position: relative;
  background: var(--bg-panel);
  border: 1px solid var(--border-neon);
  aspect-ratio: 3 / 4;
  overflow: hidden;
}

.poster-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(135deg, rgba(0, 217, 255, 0.15) 0%, transparent 45%, rgba(255, 46, 151, 0.12) 100%);
  mix-blend-mode: screen;
  pointer-events: none;
  opacity: 0.55;
  transition: opacity 0.4s ease;
}

.poster-frame:hover::after {
  opacity: 1;
}

.poster-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.55s ease;
}

.poster-frame:hover img {
  transform: scale(1.05);
}

/* ---------- 10. Header ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background 0.35s ease, border-color 0.35s ease, backdrop-filter 0.35s ease;
}

.site-header[data-scrolled="true"] {
  background: rgba(11, 5, 18, 0.92);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom-color: var(--border-neon);
}

.site-header__progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 5;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-primary) 0%, var(--accent-secondary) 60%, var(--accent-gold) 100%);
  transform-origin: 0 50%;
  transform: scaleX(0);
  pointer-events: none;
}

.site-header__inner {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  max-width: var(--container-w);
  height: var(--header-h);
  margin-inline: auto;
  padding-inline: var(--space-4);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.brand__mark {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 68px;
  padding: 7px 16px 7px 20px;
  font-family: var(--font-title);
  font-weight: 900;
  font-size: 1.35rem;
  letter-spacing: -0.02em;
  line-height: 1;
  color: var(--accent-secondary);
  border: 1.5px solid var(--accent-secondary);
  clip-path: polygon(12px 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%, 0 12px);
  box-shadow: 0 0 14px rgba(0, 217, 255, 0.35), inset 0 0 12px rgba(0, 217, 255, 0.10);
  transition: box-shadow 0.3s ease;
}

.brand:hover .brand__mark {
  box-shadow: 0 0 22px rgba(0, 217, 255, 0.55), inset 0 0 16px rgba(0, 217, 255, 0.20);
}

.brand__dot {
  width: 10px;
  height: 10px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--accent-gold);
  box-shadow: 0 0 10px rgba(244, 201, 93, 0.80);
}

.brand__sub {
  font-family: var(--font-title);
  font-weight: 900;
  font-size: 1rem;
  letter-spacing: 0.02em;
  color: var(--text-bright);
  white-space: nowrap;
}

.site-nav {
  display: flex;
  align-items: center;
  margin-left: auto;
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: 2px;
}

.site-nav__item {
  display: block;
}

.site-nav__link {
  display: inline-block;
  padding: 10px 15px;
  font-size: 0.92rem;
  font-weight: 400;
  line-height: 1.3;
  color: var(--text-muted);
  border: 1px solid transparent;
  border-radius: 999px;
  transition: color 0.22s ease, border-color 0.22s ease, background 0.22s ease, box-shadow 0.22s ease;
}

.site-nav__link:hover {
  color: var(--text-bright);
  border-color: var(--border-neon);
  background: rgba(0, 217, 255, 0.06);
}

.site-nav__link[aria-current="page"] {
  color: #FFF;
  background: linear-gradient(135deg, rgba(255, 46, 151, 0.90) 0%, rgba(255, 46, 151, 0.65) 100%);
  border-color: var(--accent-primary);
  box-shadow: 0 0 16px rgba(255, 46, 151, 0.35);
}

.header-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-left: var(--space-1);
  padding: 12px 22px 12px 24px;
  font-family: var(--font-title);
  font-weight: 900;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  line-height: 1;
  color: #FFF;
  background: var(--accent-primary);
  clip-path: polygon(10px 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%, 0 10px);
  box-shadow: 0 0 18px rgba(255, 46, 151, 0.30);
  transition: filter 0.25s ease, box-shadow 0.25s ease;
  flex-shrink: 0;
}

.header-cta:hover {
  filter: brightness(1.12);
  box-shadow: 0 0 28px rgba(255, 46, 151, 0.50);
}

.header-cta__arrow {
  display: inline-block;
  font-size: 1.1em;
  line-height: 1;
  transition: transform 0.3s ease;
}

.header-cta:hover .header-cta__arrow {
  transform: translateX(4px);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: rgba(255, 46, 151, 0.14);
  border: 1px solid var(--border-pink);
  border-radius: 10px;
  transition: background 0.25s ease, border-color 0.25s ease;
  flex-shrink: 0;
}

.nav-toggle:hover {
  background: rgba(255, 46, 151, 0.24);
  border-color: var(--accent-primary);
}

.nav-toggle__bar {
  display: block;
  width: 20px;
  height: 2px;
  border-radius: 2px;
  background: var(--text-bright);
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---------- 11. Footer ---------- */
.site-footer {
  position: relative;
  background:
    radial-gradient(ellipse at 28% 100%, rgba(255, 46, 151, 0.10) 0%, transparent 50%),
    radial-gradient(ellipse at 76% 100%, rgba(0, 217, 255, 0.08) 0%, transparent 45%),
    var(--bg-panel);
  border-top: 1px solid var(--border-neon);
  margin-top: var(--space-6);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg,
    var(--accent-status) 0%, var(--accent-gold) 18%,
    transparent 18%, transparent 32%,
    var(--accent-secondary) 32%, var(--accent-primary) 55%,
    transparent 55%, transparent 78%,
    var(--accent-gold) 78%, var(--accent-secondary) 100%);
  pointer-events: none;
}

.site-footer__inner {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 3fr);
  gap: var(--space-5);
  max-width: var(--container-w);
  margin-inline: auto;
  padding: var(--space-5) var(--space-4) var(--space-4);
}

.site-footer__brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-2);
}

.site-footer__about {
  font-family: var(--font-title);
  font-weight: 900;
  font-size: 1.15rem;
  color: var(--text-bright);
}

.site-footer__statement {
  max-width: 38ch;
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.8;
}

.site-footer__cols {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-4);
}

.site-footer__col {
  min-width: 0;
}

.site-footer__heading {
  margin-bottom: var(--space-2);
  padding-bottom: 10px;
  font-family: var(--font-title);
  font-weight: 900;
  font-size: 0.82rem;
  letter-spacing: 0.16em;
  color: var(--accent-secondary);
  border-bottom: 1px solid var(--border-neon);
  position: relative;
}

.site-footer__heading::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 32px;
  height: 1px;
  background: var(--accent-gold);
}

.site-footer__links li + li {
  margin-top: 8px;
}

.site-footer__links a {
  position: relative;
  display: inline-block;
  color: var(--text-muted);
  font-size: 0.92rem;
  transition: color 0.2s ease, padding-left 0.2s ease;
}

.site-footer__links a::before {
  content: "";
  position: absolute;
  left: -8px;
  top: 50%;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--accent-secondary);
  opacity: 0;
  transform: translateY(-50%);
  transition: opacity 0.2s ease;
}

.site-footer__links a:hover {
  color: var(--accent-secondary);
  padding-left: 8px;
}

.site-footer__links a:hover::before {
  opacity: 1;
}

.site-footer__contact li {
  position: relative;
  padding-left: 18px;
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.7;
}

.site-footer__contact li + li {
  margin-top: 8px;
}

.site-footer__contact li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 6px;
  height: 6px;
  border: 1px solid var(--accent-gold);
  transform: rotate(45deg);
}

.site-footer__bottom {
  border-top: 1px solid rgba(242, 234, 245, 0.08);
  background: rgba(11, 5, 18, 0.35);
}

.site-footer__bottom-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-1) var(--space-3);
  max-width: var(--container-w);
  margin-inline: auto;
  padding: var(--space-2) var(--space-4);
  font-family: var(--font-code);
  font-size: 0.78rem;
  color: var(--text-muted);
}

.site-footer__copyright {
  letter-spacing: 0.08em;
}

.site-footer__icp {
  letter-spacing: 0.12em;
}

/* ---------- 12. Scroll Reveal ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.55s cubic-bezier(0.2, 0.7, 0.3, 1), transform 0.55s cubic-bezier(0.2, 0.7, 0.3, 1);
  will-change: opacity, transform;
}

[data-reveal].is-revealed {
  opacity: 1;
  transform: none;
}

/* ---------- 13. Responsive ---------- */
@media (max-width: 1200px) {
  .site-nav__link {
    padding: 9px 11px;
    font-size: 0.88rem;
  }

  .header-cta {
    padding: 11px 16px;
    font-size: 0.80rem;
  }

  .brand__sub {
    font-size: 0.9rem;
  }
}

@media (max-width: 1024px) {
  .site-footer__inner {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }

  .site-footer__statement {
    max-width: 460px;
  }

  .grid--3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 960px) {
  .site-header {
    background: rgba(11, 5, 18, 0.92);
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
    border-bottom-color: var(--border-neon);
  }

  .nav-toggle {
    display: inline-flex;
  }

  .header-cta {
    display: none;
  }

  .site-nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 990;
    margin: 0;
    padding: var(--space-4) var(--space-3) var(--space-6);
    background:
      radial-gradient(ellipse at 85% 18%, rgba(255, 46, 151, 0.16) 0%, transparent 55%),
      rgba(11, 5, 18, 0.98);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-neon);
    align-items: flex-start;
    overflow-y: auto;
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.3s ease, opacity 0.3s ease, visibility 0.3s ease;
  }

  .site-nav[data-open] {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
    width: 100%;
    max-width: 480px;
    margin-inline: auto;
    padding-top: var(--space-2);
  }

  .site-nav__link {
    width: 100%;
    padding: 16px 20px;
    font-size: 1.1rem;
    text-align: center;
    border-radius: 12px;
  }

  .site-nav__link[aria-current="page"] {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: #FFF;
    box-shadow: 0 0 18px rgba(255, 46, 151, 0.4);
  }
}

@media (max-width: 640px) {
  .site-header__inner {
    gap: var(--space-2);
    padding-inline: var(--space-3);
  }

  .brand__sub {
    display: none;
  }

  .brand__mark {
    min-width: 60px;
    padding: 6px 12px 6px 16px;
    font-size: 1.2rem;
  }

  .container {
    padding-inline: var(--space-3);
  }

  .section {
    padding-block: var(--space-4);
  }

  .grid--2,
  .grid--3 {
    grid-template-columns: 1fr;
  }

  .site-footer__inner {
    padding: var(--space-4) var(--space-3) var(--space-3);
  }

  .site-footer__cols {
    grid-template-columns: 1fr;
    gap: var(--space-3);
  }

  .site-footer__bottom-inner {
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-2) var(--space-3);
  }

  .btn {
    width: 100%;
  }
}

/* ---------- 14. Reduced Motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .site-header {
    transition: none;
  }

  .site-header__progress {
    display: none;
  }
}