/* Kimi skin — a second, opt-in presentation layer.
   Every rule is scoped to html[data-skin="kimi"] so the classic skin in
   site.css stays untouched. Palette follows the Kimi K3.1 editorial page:
   near-black blue, monochrome type, one chart blue, generous negative space. */

html[data-skin="kimi"] {
  color-scheme: light;
  --bg: #E6E6E6;
  --bg-soft: #DEDDD9;
  --body-bg: #E6E6E6;
  --surface: #F7F7F5;
  --surface-2: #FAFAF8;
  --text: rgba(0, 0, 0, 0.90);
  --body: rgba(0, 0, 0, 0.60);
  --muted: rgba(0, 0, 0, 0.55);
  --faint: rgba(0, 0, 0, 0.40);
  --border: rgba(0, 0, 0, 0.10);
  --border-strong: rgba(0, 0, 0, 0.20);
  --primary: #0057FF;
  --primary-soft: rgba(0, 87, 255, 0.10);
  --accent: #0057D8;
  --accent-soft: rgba(0, 87, 216, 0.08);
  --success: #0057D8;
  --code-bg: #F7F7F5;
  --code-border: rgba(0, 0, 0, 0.10);
  --shadow: none;
  --shadow-lg: 0 24px 70px rgba(0, 0, 0, 0.12);
  --ring: 0 0 0 3px rgba(0, 87, 255, 0.28);
  --ring-soft: 0 0 0 4px rgba(0, 87, 255, 0.16);
  --heat-0: rgba(0, 0, 0, 0.06);
  --heat-1: rgba(0, 87, 255, 0.14);
  --heat-2: rgba(0, 87, 255, 0.30);
  --heat-3: rgba(0, 87, 255, 0.52);
  --heat-4: rgba(0, 87, 255, 0.82);
  --radius: 12px;
  --radius-sm: 8px;
  --content: 800px;
  --toc: 240px;
  --ui: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, Roboto, Arial,
    "PingFang SC", "Source Han Sans SC", "Microsoft YaHei UI", "Microsoft YaHei",
    "Noto Sans CJK SC", sans-serif;
  --reading: "Lora", "Noto Serif SC", "Noto Serif CJK SC", "Songti SC", "STSong",
    "SimSun", Georgia, "Times New Roman", serif;
  --mono: "Geist Mono", ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas,
    "Liberation Mono", monospace;
}

html[data-skin="kimi"][data-theme="dark"] {
  color-scheme: dark;
  --bg: #0F151A;
  --bg-soft: #0B1014;
  --body-bg: #0F151A;
  --surface: #141B21;
  --surface-2: #1A232B;
  --text: #F2F4F6;
  --body: #C9D0D6;
  --muted: #A7B0B8;
  --faint: #7A858E;
  --border: rgba(255, 255, 255, 0.10);
  --border-strong: rgba(255, 255, 255, 0.18);
  --primary: #4C8DFF;
  --primary-soft: rgba(76, 141, 255, 0.14);
  --accent: #7FB2FF;
  --accent-soft: rgba(127, 178, 255, 0.12);
  --success: #7FB2FF;
  --code-bg: #0B1014;
  --code-border: rgba(255, 255, 255, 0.10);
  --shadow: none;
  --shadow-lg: 0 28px 80px rgba(0, 0, 0, 0.34);
  --ring: 0 0 0 3px rgba(127, 178, 255, 0.34);
  --ring-soft: 0 0 0 4px rgba(127, 178, 255, 0.18);
  --heat-0: rgba(255, 255, 255, 0.06);
  --heat-1: rgba(76, 141, 255, 0.20);
  --heat-2: rgba(76, 141, 255, 0.38);
  --heat-3: rgba(76, 141, 255, 0.62);
  --heat-4: rgba(127, 178, 255, 0.92);
}

html[data-skin="kimi"],
html[data-skin="kimi"] body {
  background: var(--bg);
}

html[data-skin="kimi"] body {
  color: var(--text);
  font-family: var(--ui);
  font-size: 16px;
  line-height: 1.65;
  overflow-x: clip;
}

html[data-skin="kimi"] body::before { display: none; }
html[data-skin="kimi"] ::selection { background: rgba(76, 141, 255, 0.28); }
html[data-skin="kimi"] a { color: var(--text); }
html[data-skin="kimi"] a:hover { color: var(--accent); }

/* ---------- top bar ---------- */

html[data-skin="kimi"] .topbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  width: 100%;
  min-height: 65px;
  padding: 12px clamp(20px, 5.5vw, 80px);
  background: transparent;
  border-bottom-color: transparent;
  backdrop-filter: none;
  color: #fff;
  transition: background 0.28s ease, border-color 0.28s ease,
    backdrop-filter 0.28s ease;
}

html[data-skin="kimi"] .topbar.is-scrolled {
  background: rgba(250, 248, 244, 0.92);
  border-bottom-color: rgba(0, 0, 0, 0.07);
  backdrop-filter: blur(10px);
}

html[data-skin="kimi"][data-theme="dark"] .topbar.is-scrolled {
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  border-bottom-color: var(--border);
  backdrop-filter: blur(18px) saturate(1.2);
}

html[data-skin="kimi"] .brand,
html[data-skin="kimi"] .brand:hover {
  color: #fff;
}

html[data-skin="kimi"] .brand-mark {
  width: 28px;
  height: 28px;
  border: 1px solid rgba(255, 255, 255, 0.32);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  box-shadow: none;
  font-family: var(--reading);
  font-size: 15px;
  font-weight: 500;
}

html[data-skin="kimi"] .brand-text em { color: #fff; }
html[data-skin="kimi"] .brand-text {
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.02em;
}

html[data-skin="kimi"] .kimi-nav {
  display: flex;
  align-items: center;
  gap: 32px;
  margin-left: 48px;
  font-size: 16px;
  letter-spacing: 0.01em;
}

html[data-skin="kimi"] .kimi-nav a { color: rgba(255, 255, 255, 0.70); }
html[data-skin="kimi"] .kimi-nav a:hover { color: #fff; text-decoration: none; }

html[data-skin="kimi"] .topbar.is-scrolled .kimi-nav a { color: var(--muted); }
html[data-skin="kimi"] .topbar.is-scrolled .kimi-nav a:hover { color: var(--text); }

html[data-skin="kimi"] .doc-breadcrumb { display: none; }

html[data-skin="kimi"] .topbar-link,
html[data-skin="kimi"] .theme-toggle,
html[data-skin="kimi"] .skin-toggle,
html[data-skin="kimi"] .nav-action {
  min-height: 32px;
  padding: 5px 12px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
  color: rgba(255, 255, 255, 0.76);
  background: rgba(8, 12, 16, 0.18);
  font-size: 12px;
  letter-spacing: 0.01em;
  backdrop-filter: blur(8px);
}

html[data-skin="kimi"] .topbar-link:hover,
html[data-skin="kimi"] .theme-toggle:hover,
html[data-skin="kimi"] .skin-toggle:hover,
html[data-skin="kimi"] .nav-action:hover {
  border-color: rgba(255, 255, 255, 0.36);
  background: rgba(255, 255, 255, 0.10);
  color: #fff;
}

html[data-skin="kimi"] .topbar.is-scrolled .topbar-link,
html[data-skin="kimi"] .topbar.is-scrolled .theme-toggle,
html[data-skin="kimi"] .topbar.is-scrolled .skin-toggle,
html[data-skin="kimi"] .topbar.is-scrolled .nav-action {
  border-color: var(--border);
  background: transparent;
  color: var(--muted);
  backdrop-filter: none;
}

html[data-skin="kimi"] .topbar.is-scrolled .topbar-link:hover,
html[data-skin="kimi"] .topbar.is-scrolled .theme-toggle:hover,
html[data-skin="kimi"] .topbar.is-scrolled .skin-toggle:hover,
html[data-skin="kimi"] .topbar.is-scrolled .nav-action:hover {
  border-color: var(--border-strong);
  background: var(--surface);
  color: var(--text);
}

html[data-skin="kimi"] .topbar.is-scrolled .brand,
html[data-skin="kimi"] .topbar.is-scrolled .brand:hover,
html[data-skin="kimi"] .topbar.is-scrolled .brand-text em {
  color: var(--text);
}

html[data-skin="kimi"] .topbar.is-scrolled .brand-mark {
  border-color: var(--border-strong);
  background: var(--surface);
  color: var(--text);
}

html[data-skin="kimi"] .doc-breadcrumb,
html[data-skin="kimi"] .doc-breadcrumb a,
html[data-skin="kimi"] .doc-breadcrumb span[aria-hidden] {
  color: rgba(255, 255, 255, 0.62);
}

html[data-skin="kimi"] .topbar.is-scrolled .doc-breadcrumb,
html[data-skin="kimi"] .topbar.is-scrolled .doc-breadcrumb a {
  color: var(--muted);
}

/* Light theme: the generated hero has a pale sky, so the original-style
   header uses dark ink over the image instead of a white-on-dark scrim. */
html[data-skin="kimi"][data-theme="light"] body[data-page="home"] .topbar:not(.is-scrolled) { color: var(--text); }
html[data-skin="kimi"][data-theme="light"] body[data-page="home"] .topbar:not(.is-scrolled) .brand,
html[data-skin="kimi"][data-theme="light"] body[data-page="home"] .topbar:not(.is-scrolled) .brand:hover,
html[data-skin="kimi"][data-theme="light"] body[data-page="home"] .topbar:not(.is-scrolled) .brand-text em {
  color: var(--text);
}
html[data-skin="kimi"][data-theme="light"] body[data-page="home"] .topbar:not(.is-scrolled) .brand-mark {
  border-color: rgba(0, 0, 0, 0.24);
  background: rgba(255, 255, 255, 0.24);
  color: var(--text);
}
html[data-skin="kimi"][data-theme="light"] body[data-page="home"] .topbar:not(.is-scrolled) .topbar-link,
html[data-skin="kimi"][data-theme="light"] body[data-page="home"] .topbar:not(.is-scrolled) .theme-toggle,
html[data-skin="kimi"][data-theme="light"] body[data-page="home"] .topbar:not(.is-scrolled) .skin-toggle,
html[data-skin="kimi"][data-theme="light"] body[data-page="home"] .topbar:not(.is-scrolled) .nav-action {
  border-color: rgba(0, 0, 0, 0.16);
  background: rgba(255, 255, 255, 0.22);
  color: rgba(0, 0, 0, 0.70);
}
html[data-skin="kimi"][data-theme="light"] body[data-page="home"] .topbar:not(.is-scrolled) .topbar-link:hover,
html[data-skin="kimi"][data-theme="light"] body[data-page="home"] .topbar:not(.is-scrolled) .theme-toggle:hover,
html[data-skin="kimi"][data-theme="light"] body[data-page="home"] .topbar:not(.is-scrolled) .skin-toggle:hover,
html[data-skin="kimi"][data-theme="light"] body[data-page="home"] .topbar:not(.is-scrolled) .nav-action:hover {
  border-color: rgba(0, 0, 0, 0.30);
  background: rgba(255, 255, 255, 0.42);
  color: var(--text);
}
html[data-skin="kimi"][data-theme="light"] body[data-page="home"] .topbar:not(.is-scrolled) .kimi-nav a {
  color: rgba(0, 0, 0, 0.62);
}
html[data-skin="kimi"][data-theme="light"] body[data-page="home"] .topbar:not(.is-scrolled) .kimi-nav a:hover {
  color: var(--text);
}

html[data-skin="kimi"][data-theme="light"] body[data-page="home"] .topbar:not(.is-scrolled) .topbar-link[href*="github"] {
  border-color: #111;
  background: #111;
  color: #fff;
}
html[data-skin="kimi"][data-theme="light"] body[data-page="home"] .topbar:not(.is-scrolled) .topbar-link[href*="github"]:hover {
  border-color: #000;
  background: #000;
  color: #fff;
}

/* Primary action uses the same solid ink pill as the original "Try Kimi". */
html[data-skin="kimi"] .topbar-link[href*="github"] {
  border-color: #111;
  background: #111;
  color: #fff;
}
html[data-skin="kimi"] .topbar-link[href*="github"]:hover {
  border-color: #000;
  background: #000;
  color: #fff;
}
html[data-skin="kimi"] .topbar.is-scrolled .topbar-link[href*="github"] {
  border-color: #111;
  background: #111;
  color: #fff;
}

/* ---------- home hero ---------- */

html[data-skin="kimi"] .hero {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  max-width: none;
  min-height: 100svh;
  margin: 0;
  padding: 0;
  overflow: hidden;
  background: var(--bg);
  isolation: isolate;
}

html[data-skin="kimi"] .hero-media,
html[data-skin="kimi"] .hero-scrim {
  display: block;
  position: absolute;
  inset: 0;
}

html[data-skin="kimi"] .hero-media { z-index: 0; overflow: hidden; }
html[data-skin="kimi"] .hero-media picture,
html[data-skin="kimi"] .hero-media img,
html[data-skin="kimi"] .hero-cloud-canvas {
  display: block;
  width: 100%;
  height: 100%;
}
html[data-skin="kimi"] .hero-media img {
  object-fit: cover;
  object-position: center 50%;
  transform: scale(1.03);
  will-change: transform;
}
html[data-skin="kimi"] .hero-cloud-canvas {
  position: absolute;
  inset: 0;
  object-fit: cover;
  opacity: 0;
  transition: opacity 0.6s ease;
}
html[data-skin="kimi"] .hero.hero-cloud-ready .hero-cloud-canvas { opacity: 1; }
html[data-skin="kimi"] .hero.hero-cloud-ready .hero-media picture,
html[data-skin="kimi"] .hero.hero-cloud-ready .hero-media img { visibility: hidden; }
html[data-skin="kimi"] .hero.hero-cloud-ready .hero-clouds { display: none; }
html:not([data-skin="kimi"]) .hero-cloud-canvas { display: none; }

html[data-skin="kimi"] .hero-scrim {
  z-index: 1;
  background:
    radial-gradient(ellipse at 50% 44%, rgba(5, 8, 11, 0.10), transparent 64%),
    linear-gradient(180deg, rgba(5, 8, 11, 0.68) 0%, rgba(5, 8, 11, 0) 26%),
    linear-gradient(0deg, var(--bg) 0%, color-mix(in srgb, var(--bg) 62%, transparent) 8%, transparent 24%);
}

html[data-skin="kimi"][data-theme="light"] .hero-scrim {
  background:
    radial-gradient(ellipse at 50% 44%, rgba(5, 8, 11, 0.06), transparent 64%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.05) 0%, transparent 22%),
    linear-gradient(0deg, var(--bg) 0%, color-mix(in srgb, var(--bg) 58%, transparent) 8%, transparent 22%);
}

html[data-skin="kimi"] .hero-glow { display: none; }

html[data-skin="kimi"] .hero-inner {
  position: relative;
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  width: 100%;
  max-width: 1200px;
  min-height: 100svh;
  box-sizing: border-box;
  margin: 0 auto;
  padding: 130px clamp(20px, 6vw, 72px) 84px;
  text-align: center;
  will-change: transform, opacity;
}

html[data-skin="kimi"] .eyebrow { display: none; }

html[data-skin="kimi"] .hero-copy {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  padding-top: clamp(40px, calc(12vh + 5px), 140px);
}

html[data-skin="kimi"] .hero-mark-wrap {
  position: relative;
  display: block;
  margin: 0;
}

html[data-skin="kimi"] .kimi-wind-defs {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
  pointer-events: none;
}

html[data-skin="kimi"] .hero-mark {
  position: relative;
  z-index: 1;
  width: min(46dvh, 70vw);
  aspect-ratio: 1;
  margin: 0 auto;
  filter: drop-shadow(0 8px 32px rgba(0, 0, 0, 0.28));
  transform: translate3d(var(--kimi-wind-x, 0), var(--kimi-wind-y, 0), 0) rotate(var(--kimi-wind-r, 0deg));
  transform-origin: 50% 58%;
  transition: transform 0.55s cubic-bezier(0.22, 1, 0.36, 1), filter 0.25s ease;
  will-change: transform, filter;
}

html[data-skin="kimi"] .hero-mark.is-windy {
  filter: url(#kimi-mark-wind) drop-shadow(0 8px 32px rgba(0, 0, 0, 0.28));
}

html[data-skin="kimi"] .hero-mark .mark-svg {
  display: block;
  width: 100%;
  height: 100%;
  overflow: visible;
}

/* The reference brings the wordmark up through progressively sharper
   layers; a focus pull on the brush mask approximates that without shipping
   four 1k PNGs. */
html[data-skin="kimi"] .hero.is-intro .mark-svg {
  animation: kimi-mark-focus var(--intro-duration, 3.2s) linear both;
}
@keyframes kimi-mark-focus {
  0% { filter: blur(11px); opacity: 0.2; }
  48% { filter: blur(4.5px); opacity: 0.52; }
  78% { filter: blur(0.7px); opacity: 0.86; }
  100% { filter: blur(0); opacity: 1; }
}

html[data-skin="kimi"] .hero-mark-caption {
  margin: 6px 0 0;
  color: rgba(255, 255, 255, 0.78);
  font-family: var(--reading);
  font-size: clamp(0.72rem, 1.05vw, 0.95rem);
  font-weight: 400;
  line-height: 1.4;
  letter-spacing: 0.34em;
  text-indent: 0.34em;
  white-space: nowrap;
  text-shadow: 0 1px 16px rgba(0, 0, 0, 0.45);
}

html[data-skin="kimi"] .hero.is-intro .hero-mark-caption {
  animation: kimi-fade-in 0.9s 2.7s both;
}

/* Ghostly code field: the reference reveals code glyphs in a soft radius
   around the pointer, tinted green, without a lens or backdrop plate. */
html[data-skin="kimi"] .hero-code-layer {
  display: block;
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.24s ease;
}

html[data-skin="kimi"] .hero-code-layer.is-visible { opacity: 1; }

html[data-skin="kimi"] .hero-code-canvas {
  display: block;
  width: 100%;
  height: 100%;
}


html[data-skin="kimi"] .hero.is-intro .hero h1 {
  animation: kimi-fade-in 0.9s 0.55s both;
}

html[data-skin="kimi"] .hero.is-intro .hero-lede {
  animation: kimi-fade-in 0.9s 0.75s both;
}

html[data-skin="kimi"] .hero h1 {
  max-width: 1100px;
  margin: 0;
  color: #fff;
  font-family: var(--reading);
  font-size: clamp(1.25rem, 2.3vw, 1.9rem);
  font-weight: 400;
  line-height: 1.45;
  letter-spacing: 0.16em;
  text-indent: 0.16em;
  text-wrap: balance;
  text-shadow: 0 2px 40px rgba(0, 0, 0, 0.45), 0 1px 14px rgba(0, 0, 0, 0.35);
}

html[data-skin="kimi"] .hero-lede {
  max-width: 560px;
  margin: 18px 0 0;
  color: rgba(255, 255, 255, 0.68);
  font-size: 0.95rem;
  line-height: 1.85;
  text-wrap: pretty;
  text-shadow: 0 1px 16px rgba(0, 0, 0, 0.55);
}

@keyframes kimi-fade-in {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: none; }
}

html[data-skin="kimi"] .hero-inner .hero-meta { display: none; }

html[data-skin="kimi"] .kimi-hero-lower {
  display: block;
  max-width: none;
  margin: 0 auto;
  padding: 176px max(20px, calc((100vw - 800px) / 2)) 0;
  text-align: left;
}

html[data-skin="kimi"] .kimi-intro {
  max-width: 800px;
  margin: 0 0 56px;
}

html[data-skin="kimi"] .kimi-intro h1 {
  max-width: 800px;
  margin: 0 0 24px;
  color: var(--text);
  font-family: var(--reading);
  font-size: clamp(1.75rem, 2.5vw, 2rem);
  font-weight: 450;
  line-height: 1.19;
  letter-spacing: -0.04em;
  text-wrap: balance;
}

html[data-skin="kimi"] .kimi-intro .hero-lede {
  max-width: 800px;
  margin: 0;
  color: var(--body);
  font-family: var(--reading);
  font-size: 16px;
  line-height: 1.5;
  text-shadow: none;
}

html[data-skin="kimi"] .kimi-hero-lower .hero-meta { display: block; }

html[data-skin="kimi"] .kimi-hero-lower .hero-stats {
  justify-content: flex-start;
  gap: 12px 26px;
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

html[data-skin="kimi"] .kimi-hero-lower .hero-stats strong {
  color: var(--text);
  font-family: var(--reading);
  font-size: 20px;
  font-weight: 500;
}

html[data-skin="kimi"] .kimi-hero-lower .hero-tools {
  justify-content: flex-start;
  width: 100%;
  margin-top: 28px;
}

html[data-skin="kimi"] .kimi-hero-lower .search-box {
  flex: 0 1 520px;
  max-width: 520px;
  min-height: 48px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  box-shadow: none;
  backdrop-filter: none;
}

html[data-skin="kimi"] .kimi-hero-lower .search-box:focus-within {
  border-color: var(--border-strong);
  box-shadow: 0 0 0 4px var(--primary-soft);
}

html[data-skin="kimi"] .kimi-hero-lower .search-box input { color: var(--text); }
html[data-skin="kimi"] .kimi-hero-lower .search-box input::placeholder { color: var(--faint); }
html[data-skin="kimi"] .kimi-hero-lower .search-icon { color: var(--faint); }
html[data-skin="kimi"] .kimi-hero-lower .search-kbd {
  border-color: var(--border);
  background: var(--bg-soft);
  color: var(--faint);
}
html[data-skin="kimi"] .kimi-hero-lower .index-link { color: var(--muted); }
html[data-skin="kimi"] .kimi-hero-lower .index-link:hover { color: var(--text); }

html[data-skin="kimi"] .hero-copy h1,
html[data-skin="kimi"] .hero-copy .hero-lede { display: none; }

html[data-skin="kimi"] .hero-scroll {
  position: absolute;
  left: 50%;
  bottom: 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  margin: 0;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  transform: translateX(-50%);
  color: rgba(255, 255, 255, 0.92);
  font-family: var(--reading);
  font-size: 16px;
  font-weight: 600;
  line-height: 24px;
  letter-spacing: 0;
  text-transform: none;
  text-shadow: 0 1px 18px rgba(0, 0, 0, 0.55), 0 1px 3px rgba(0, 0, 0, 0.38);
}
html[data-skin="kimi"] .hero-scroll:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 6px;
}

html[data-skin="kimi"] .hero-scroll-caret {
  display: grid;
  place-items: center;
  height: 24px;
  color: rgba(255, 255, 255, 0.86);
  filter: drop-shadow(0 1px 8px rgba(0, 0, 0, 0.35));
}

html[data-skin="kimi"] .hero-scroll-caret svg { display: block; }

html[data-skin="kimi"] .hero-scroll-label { display: block; }

@media (prefers-reduced-motion: no-preference) {
  html[data-skin="kimi"] .hero-scroll {
    -webkit-mask-image: linear-gradient(to top,
      color-mix(in srgb, #fff 90%, transparent) 40%,
      #fff 50%,
      color-mix(in srgb, #fff 90%, transparent) 60%);
    mask-image: linear-gradient(to top,
      color-mix(in srgb, #fff 90%, transparent) 40%,
      #fff 50%,
      color-mix(in srgb, #fff 90%, transparent) 60%);
    -webkit-mask-size: 100% 300%;
    mask-size: 100% 300%;
    -webkit-mask-repeat: no-repeat;
    mask-repeat: no-repeat;
    animation: kimi-hint-shine 3.2s ease-in-out infinite;
  }
}

@keyframes kimi-hint-shine {
  0% { -webkit-mask-position: 50% 0; mask-position: 50% 0; }
  40%, 100% { -webkit-mask-position: 50% 100%; mask-position: 50% 100%; }
}

@keyframes kimi-float {
  0%, 100% { transform: translateY(0); opacity: 0.55; }
  50% { transform: translateY(6px); opacity: 0.95; }
}

/* ---------- contribution strip ---------- */

html[data-skin="kimi"] .contrib {
  max-width: 1240px;
  padding: 42px clamp(20px, 5vw, 56px) 0;
}

html[data-skin="kimi"] .contrib-card {
  padding: 26px 0 18px;
  border: 0;
  border-top: 1px solid var(--border);
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}

html[data-skin="kimi"] .contrib-card::before,
html[data-skin="kimi"] .contrib-card::after { display: none; }

html[data-skin="kimi"] .contrib-eyebrow {
  color: var(--faint);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.22em;
}

html[data-skin="kimi"] .contrib-title {
  font-family: var(--reading);
  font-size: 22px;
  font-weight: 500;
  letter-spacing: -0.02em;
}

html[data-skin="kimi"] .contrib-subtitle,
html[data-skin="kimi"] .contrib-summary { color: var(--muted); }

html[data-skin="kimi"] .contrib-tip {
  border-color: var(--border-strong);
  background: var(--surface-2);
  color: var(--text);
}

/* ---------- library ---------- */

html[data-skin="kimi"] .library {
  max-width: 1240px;
  padding: 26px clamp(20px, 5vw, 56px) 120px;
  scroll-margin-top: 80px;
}

html[data-skin="kimi"] .library-heading {
  display: block;
  margin: 54px 0 34px;
}

html[data-skin="kimi"] .library-kicker {
  margin: 0 0 12px;
  color: var(--faint);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.26em;
}

html[data-skin="kimi"] .library-heading h2 {
  margin: 0;
  font-family: var(--reading);
  font-size: clamp(1.75rem, 2.5vw, 2rem);
  font-weight: 450;
  line-height: 1.19;
  letter-spacing: -0.04em;
}

html[data-skin="kimi"] .library-lede {
  max-width: 800px;
  margin: 14px 0 0;
  color: var(--body);
  font-family: var(--reading);
  font-size: 16px;
  line-height: 1.5;
}

html[data-skin="kimi"] .library-toolbar {
  padding: 4px 0 16px;
  border-bottom: 1px solid var(--border);
}

html[data-skin="kimi"] .filters { gap: 2px 18px; }

html[data-skin="kimi"] .filter {
  min-height: 38px;
  padding: 8px 0;
  border: 0;
  border-bottom: 1px solid transparent;
  border-radius: 0;
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.02em;
}

html[data-skin="kimi"] .filter:hover {
  color: var(--text);
  background: transparent;
}

html[data-skin="kimi"] .filter.is-active {
  border-bottom-color: var(--text);
  background: transparent;
  color: var(--text);
  font-weight: 500;
}

html[data-skin="kimi"] .filter-count {
  min-width: 0;
  padding: 0;
  border-radius: 0;
  background: transparent;
  color: var(--faint);
  font-family: var(--mono);
  font-size: 10px;
}

html[data-skin="kimi"] .sort-control { color: var(--faint); font-size: 11px; }
html[data-skin="kimi"] .sort-control select {
  min-height: 32px;
  border-color: var(--border);
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  font-size: 12px;
}

html[data-skin="kimi"] .result-line {
  margin: 26px 0 20px;
  color: var(--faint);
  font-size: 11px;
  letter-spacing: 0.02em;
}
html[data-skin="kimi"] #result-count { color: var(--muted); font-weight: 500; }

/* ---------- featured + cards ---------- */

html[data-skin="kimi"] .featured { gap: 28px; margin: 28px 0 0; }

html[data-skin="kimi"] .featured-card {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.65fr);
  grid-template-rows: 1fr auto;
  align-items: stretch;
  gap: 0;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--surface);
  box-shadow: none;
  overflow: hidden;
}

html[data-skin="kimi"] .featured-card::after { display: none; }

html[data-skin="kimi"] .featured-media {
  display: block;
  grid-row: 1 / 3;
  grid-column: 1;
  min-height: 360px;
  overflow: hidden;
  background: var(--surface-2);
}

html[data-skin="kimi"] .featured-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 50% 64%;
  display: block;
  filter: brightness(0.94) saturate(0.92);
  transition: transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

html[data-skin="kimi"] .featured-card:hover .featured-media img { transform: scale(1.025); }

html[data-skin="kimi"] .featured-main {
  grid-row: 1;
  grid-column: 2;
  max-width: none;
  padding: 42px 38px 20px;
  align-self: end;
}

html[data-skin="kimi"] .featured-main h2 {
  margin: 14px 0 12px;
  font-family: var(--ui);
  font-size: clamp(1.4rem, 2.1vw, 1.9rem);
  font-weight: 600;
  line-height: 1.28;
  letter-spacing: -0.025em;
}

html[data-skin="kimi"] .featured-main h2 a { color: var(--text); }
html[data-skin="kimi"] .featured-main h2 a:hover { color: var(--accent); }
html[data-skin="kimi"] .featured-main > p {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.85;
  display: -webkit-box;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

html[data-skin="kimi"] .featured-actions {
  grid-row: 2;
  grid-column: 2;
  flex-direction: row;
  align-items: center;
  min-width: 0;
  padding: 0 38px 36px;
}

html[data-skin="kimi"] .button {
  min-height: 36px;
  padding: 7px 16px;
  border: 1px solid var(--text);
  border-radius: 999px;
  background: var(--text);
  color: var(--bg);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.01em;
}

html[data-skin="kimi"] .button:hover {
  background: color-mix(in srgb, var(--text) 86%, var(--bg));
  color: var(--bg);
}

html[data-skin="kimi"] .button-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border-strong);
}
html[data-skin="kimi"] .button-ghost:hover {
  background: var(--surface-2);
  color: var(--text);
}

html[data-skin="kimi"] .cards {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 34px 24px;
}

html[data-skin="kimi"] .card {
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
  box-shadow: none;
}

html[data-skin="kimi"] .card:hover {
  transform: none;
  border-color: var(--border-strong);
  box-shadow: none;
}

html[data-skin="kimi"] .card-link {
  min-height: 0;
  padding: 10px 10px 14px;
}

html[data-skin="kimi"] .card-media {
  display: block;
  aspect-ratio: 16 / 10;
  margin: 0 0 14px;
  border-radius: 8px;
  overflow: hidden;
  background: var(--bg-soft);
}

html[data-skin="kimi"] .card-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.65s cubic-bezier(0.16, 1, 0.3, 1);
}

html[data-skin="kimi"] .card:hover .card-media img { transform: scale(1.035); }

html[data-skin="kimi"] .card-media-fallback {
  display: grid;
  place-items: center;
  background:
    radial-gradient(120% 90% at 20% 10%, rgba(127, 178, 255, 0.12), transparent 55%),
    radial-gradient(90% 80% at 80% 90%, rgba(255, 255, 255, 0.06), transparent 60%),
    var(--surface);
}

html[data-skin="kimi"] .card-media-fallback span {
  color: color-mix(in srgb, var(--text) 18%, transparent);
  font-family: var(--reading);
  font-size: 4.4rem;
  font-weight: 500;
  line-height: 1;
}

html[data-skin="kimi"] .card-top { gap: 10px; }
html[data-skin="kimi"] .card-id { color: var(--faint); font-size: 10px; font-weight: 500; }
html[data-skin="kimi"] .card-kind {
  padding: 1px 7px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: transparent;
  color: var(--faint);
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.04em;
}

html[data-skin="kimi"] .card h3 {
  margin: 10px 0 6px;
  font-family: var(--ui);
  font-size: 1.02rem;
  font-weight: 600;
  line-height: 1.45;
  letter-spacing: -0.01em;
  -webkit-line-clamp: 2;
}

html[data-skin="kimi"] .card-paper {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 11.5px;
  line-height: 1.6;
  -webkit-line-clamp: 1;
}

html[data-skin="kimi"] .card-excerpt { display: none; }
html[data-skin="kimi"] .card-meta {
  margin-top: 10px;
  color: var(--faint);
  font-size: 10.5px;
}
html[data-skin="kimi"] .card-arrow { display: none; }

html[data-skin="kimi"] .empty-state {
  border-color: var(--border-strong);
  border-radius: 14px;
  color: var(--muted);
}
html[data-skin="kimi"] .empty-title { color: var(--text); }

/* ---------- footer ---------- */

html[data-skin="kimi"] .site-footer {
  max-width: 1240px;
  padding-top: 34px;
  border-top: 1px solid var(--border);
  color: var(--faint);
  font-size: 11px;
  letter-spacing: 0.01em;
}
html[data-skin="kimi"] .site-footer strong {
  color: var(--text);
  font-family: var(--reading);
  font-size: 15px;
  font-weight: 500;
}
html[data-skin="kimi"] .site-footer p { color: var(--muted); }
html[data-skin="kimi"] .footer-links a { color: var(--muted); }
html[data-skin="kimi"] .footer-links a:hover { color: var(--text); }
html[data-skin="kimi"] .nojs { max-width: 1240px; color: var(--muted); }

/* ---------- reader ---------- */

html[data-skin="kimi"] .reading-progress {
  height: 2px;
  background: linear-gradient(90deg, #fff, var(--accent));
  box-shadow: 0 0 18px rgba(127, 178, 255, 0.45);
}

html[data-skin="kimi"] .doc-layout {
  display: block;
  max-width: none;
  padding: 0 0 120px;
}

html[data-skin="kimi"] .doc {
  width: min(800px, calc(100vw - 48px));
  margin: 0 auto;
}

html[data-skin="kimi"] .doc-header {
  position: relative;
  display: block;
  min-height: 0;
  margin: 0 0 48px;
  padding: 0;
  border: 0;
  isolation: isolate;
}

html[data-skin="kimi"] .doc-cover {
  display: block;
  position: relative;
  top: auto;
  bottom: auto;
  left: auto;
  width: 100vw;
  height: 100svh;
  margin-left: calc(50% - 50vw);
  margin-bottom: 0;
  overflow: hidden;
  z-index: 0;
  background: var(--bg-soft);
  visibility: hidden;
}

html[data-skin="kimi"] .doc-cover.is-positioned { visibility: visible; }

/* The original hero carries only the model wordmark; keep the same
   quiet, centered signature instead of putting the article title on it. */
html[data-skin="kimi"] .doc-cover::before {
  content: "Paper Reading Notes";
  position: absolute;
  inset: 0;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 24px;
  color: rgba(255, 255, 255, 0.92);
  font-family: var(--reading);
  font-size: clamp(2rem, 4vw, 3.4rem);
  font-weight: 500;
  letter-spacing: 0.01em;
  text-align: center;
  text-shadow: 0 2px 38px rgba(0, 0, 0, 0.42);
  pointer-events: none;
}

html[data-skin="kimi"] .doc-cover img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 42%;
  filter: brightness(0.82) saturate(0.88);
  transform: scale(1.02);
}

/* A note's own figure is often a bright diagram; blur it into a dark
   atmospheric plate so the overlaid title always wins. */
html[data-skin="kimi"] .doc-cover.is-custom img {
  filter: brightness(0.30) saturate(0.45) blur(6px);
  transform: scale(1.08);
}

html[data-skin="kimi"] .doc-cover::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 50% 58%, rgba(5, 8, 11, 0.38), transparent 64%),
    linear-gradient(180deg, rgba(5, 8, 11, 0.74) 0%, rgba(5, 8, 11, 0.16) 30%, rgba(5, 8, 11, 0.55) 60%, rgba(15, 21, 26, 0.94) 100%),
    linear-gradient(0deg, var(--bg) 0%, rgba(15, 21, 26, 0.82) 9%, transparent 26%);
}

html[data-skin="kimi"] .doc-cover.is-custom::after {
  background:
    linear-gradient(180deg, rgba(5, 8, 11, 0.80) 0%, rgba(5, 8, 11, 0.55) 28%, rgba(5, 8, 11, 0.72) 58%, rgba(15, 21, 26, 0.97) 100%),
    linear-gradient(0deg, var(--bg) 0%, rgba(15, 21, 26, 0.88) 9%, transparent 26%);
}

html[data-skin="kimi"][data-theme="light"] .doc-cover::after {
  background:
    radial-gradient(ellipse at 50% 58%, rgba(5, 8, 11, 0.38), transparent 64%),
    linear-gradient(180deg, rgba(5, 8, 11, 0.74) 0%, rgba(5, 8, 11, 0.16) 30%, rgba(5, 8, 11, 0.55) 60%, rgba(15, 21, 26, 0.94) 100%),
    linear-gradient(0deg, var(--bg) 0%, rgba(230, 230, 230, 0.84) 9%, transparent 26%);
}

html[data-skin="kimi"][data-theme="light"] .doc-cover.is-custom::after {
  background:
    linear-gradient(180deg, rgba(5, 8, 11, 0.80) 0%, rgba(5, 8, 11, 0.55) 28%, rgba(5, 8, 11, 0.72) 58%, rgba(15, 21, 26, 0.97) 100%),
    linear-gradient(0deg, var(--bg) 0%, rgba(230, 230, 230, 0.90) 9%, transparent 26%);
}

html[data-skin="kimi"] .doc-header > *:not(.doc-cover) {
  position: relative;
  z-index: 2;
}

html[data-skin="kimi"] .doc-kicker {
  gap: 10px 14px;
  margin-top: 18px;
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.04em;
}

html[data-skin="kimi"] .doc-id { color: var(--text); font-weight: 500; }

html[data-skin="kimi"] .kind-badge,
html[data-skin="kimi"] .kind-blog,
html[data-skin="kimi"] .kind-summary {
  padding: 2px 9px;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.06em;
  backdrop-filter: none;
}

html[data-skin="kimi"] .doc-header h1 {
  max-width: 800px;
  margin: 176px 0 24px;
  color: var(--text);
  font-family: var(--reading);
  font-size: 32px;
  font-weight: 450;
  line-height: 1.19;
  letter-spacing: -0.04em;
  text-wrap: balance;
  text-shadow: none;
}

html[data-skin="kimi"] .doc-paper-title {
  max-width: 800px;
  margin: 0 0 24px;
  color: var(--body);
  font-family: var(--reading);
  font-size: 16px;
  line-height: 1.5;
}

html[data-skin="kimi"] .doc-meta {
  margin-top: 18px;
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.02em;
}

html[data-skin="kimi"] .doc-meta span + span::before { color: var(--faint); }

html[data-skin="kimi"] .doc-links { gap: 16px; margin-top: 18px; }
html[data-skin="kimi"] .doc-link { color: var(--muted); }
html[data-skin="kimi"] .doc-link:hover { color: var(--text); }

html[data-skin="kimi"] .doc-scroll { display: none; }

/* ---------- prose ---------- */

html[data-skin="kimi"] .prose {
  color: var(--body);
  font-family: var(--reading);
  font-size: 16px;
  line-height: 1.5;
}

html[data-skin="kimi"] .prose p { margin: 0 0 24px; text-wrap: pretty; }

html[data-skin="kimi"] .prose h2,
html[data-skin="kimi"] .prose h3,
html[data-skin="kimi"] .prose h4 {
  font-family: var(--reading);
  color: var(--text);
  letter-spacing: -0.03em;
  scroll-margin-top: 110px;
}

html[data-skin="kimi"] .prose h2 {
  margin: 112px 0 24px;
  padding-left: 0;
  font-size: 28px;
  font-weight: 450;
  line-height: 36px;
}
html[data-skin="kimi"] .prose h2::before { content: none; }

html[data-skin="kimi"] .prose h3 {
  margin: 48px 0 16px;
  font-size: 22px;
  font-weight: 450;
  line-height: 28px;
}

html[data-skin="kimi"] .prose h4 {
  margin: 32px 0 12px;
  font-size: 18px;
  font-weight: 500;
  line-height: 24px;
  color: var(--body);
}

html[data-skin="kimi"] .prose > :first-child { margin-top: 0; }

html[data-skin="kimi"] .prose a {
  color: var(--text);
  text-decoration: none;
  text-decoration-color: color-mix(in srgb, var(--accent) 48%, transparent);
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}
html[data-skin="kimi"] .prose a:hover {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-color: var(--accent);
}

html[data-skin="kimi"] .prose strong { color: var(--text); font-weight: 600; }

html[data-skin="kimi"] .prose ul,
html[data-skin="kimi"] .prose ol { margin: 0 0 1.4em; padding-left: 1.5em; }
html[data-skin="kimi"] .prose li { margin: 0.34em 0; }
html[data-skin="kimi"] .prose li::marker { color: var(--faint); }

html[data-skin="kimi"] .prose blockquote {
  margin: 2.2rem 0;
  padding: 0.2em 0 0.2em 1.5rem;
  border-left: 1px solid var(--border-strong);
  border-radius: 0;
  background: transparent;
  color: var(--muted);
}
html[data-skin="kimi"] .prose blockquote p:last-child { margin-bottom: 0; }

html[data-skin="kimi"] .prose hr {
  margin: 3.4rem 0;
  border-top: 1px solid var(--border);
}

html[data-skin="kimi"] .prose code {
  padding: 0.12em 0.36em;
  border: 1px solid var(--code-border);
  border-radius: 4px;
  background: var(--code-bg);
  color: var(--text);
  font-size: 0.82em;
}

html[data-skin="kimi"] .prose pre {
  margin: 2rem 0;
  padding: 18px 20px;
  border: 1px solid var(--code-border);
  border-radius: 10px;
  background: var(--code-bg);
  font-size: 12.5px;
  line-height: 1.7;
}

html[data-skin="kimi"] .code-copy {
  border-color: var(--border);
  background: var(--surface);
  color: var(--muted);
}
html[data-skin="kimi"] .code-copy:hover { color: var(--text); border-color: var(--border-strong); }

html[data-skin="kimi"] .table-wrap {
  margin: 2.2rem 0;
  border: 0;
  border-top: 1px solid var(--border-strong);
  border-bottom: 1px solid var(--border);
  border-radius: 0;
}

html[data-skin="kimi"] .prose table { font-size: 12.5px; line-height: 1.65; }
html[data-skin="kimi"] .prose th,
html[data-skin="kimi"] .prose td {
  padding: 11px 12px;
  border-bottom: 1px solid var(--border);
  border-right: 0;
}
html[data-skin="kimi"] .prose th {
  background: var(--bg);
  color: var(--text);
  font-weight: 500;
  letter-spacing: 0.01em;
}
html[data-skin="kimi"] .prose tbody tr:nth-child(even) td { background: transparent; }
html[data-skin="kimi"] .prose tr:last-child td { border-bottom: 0; }

html[data-skin="kimi"] .prose figure,
html[data-skin="kimi"] .prose p:has(> img:only-child) {
  width: 100%;
  max-width: none;
  margin: 2.8rem 0;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
}

/* Only break media out of the 800px measure when the fixed TOC is hidden, or
   when the viewport is wide enough that the 1040px plate cannot reach it. */
@media (min-width: 1360px) {
  html[data-skin="kimi"] .prose figure,
  html[data-skin="kimi"] .prose p:has(> img:only-child) {
    width: min(1040px, calc(100vw - 96px));
    margin-left: 50%;
    transform: translateX(-50%);
  }
}

@media (max-width: 1359px) {
  html[data-skin="kimi"] .prose figure,
  html[data-skin="kimi"] .prose p:has(> img:only-child) {
    width: min(1040px, calc(100vw - 48px));
    margin-left: 50%;
    transform: translateX(-50%);
  }
}

html[data-skin="kimi"] .prose figure img,
html[data-skin="kimi"] .prose p:has(> img:only-child) img {
  width: auto;
  max-width: 100%;
  height: auto;
  margin: 0 auto;
  border-radius: 12px;
}

html[data-skin="kimi"] .prose img { border-radius: 12px; }

html[data-skin="kimi"] .prose figcaption {
  max-width: 800px;
  margin: 12px auto 0;
  color: var(--faint);
  font-family: var(--reading);
  font-size: 14px;
  line-height: 22px;
  text-align: center;
}

html[data-skin="kimi"] .math-display { margin: 2rem 0; }

html[data-skin="kimi"] .mermaid {
  margin: 2.4rem 0;
  padding: 6px 0;
}
html[data-skin="kimi"] .mermaid.mermaid-pending {
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface);
}
html[data-skin="kimi"] .mermaid-zoom {
  border-color: var(--border);
  background: var(--surface);
  color: var(--muted);
}
html[data-skin="kimi"] .mermaid-zoom:hover { border-color: var(--border-strong); color: var(--text); }

html[data-skin="kimi"] .loading,
html[data-skin="kimi"] .noscript-note { color: var(--muted); font-family: var(--ui); }

/* ---------- TOC ---------- */

html[data-skin="kimi"] .toc {
  position: fixed;
  top: 200px;
  left: 24px;
  right: auto;
  width: 236px;
  max-height: calc(100vh - 250px);
  padding: 0 0 16px;
  border-left: 0;
  z-index: 10;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.5s ease;
}

html[data-skin="kimi"].kimi-past-cover .toc {
  opacity: 1;
  pointer-events: auto;
}

html[data-skin="kimi"] .toc-title {
  margin-bottom: 12px;
  color: var(--faint);
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

html[data-skin="kimi"] .toc nav { gap: 1px; }
html[data-skin="kimi"] .toc a {
  padding: 9px 0 9px 12px;
  border-left: 1px solid transparent;
  color: color-mix(in srgb, var(--text) 45%, transparent);
  font-size: 14px;
  line-height: 1.6;
}
html[data-skin="kimi"] .toc a:hover { color: var(--text); text-decoration: none; }
html[data-skin="kimi"] .toc a.is-active {
  border-left-color: var(--text);
  background: transparent;
  color: var(--text);
  font-weight: 400;
}

html[data-skin="kimi"] .toc-fab {
  border-color: var(--border);
  background: var(--surface);
  color: var(--text);
  box-shadow: none;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s ease;
}

html[data-skin="kimi"].kimi-past-cover .toc-fab {
  opacity: 1;
  pointer-events: auto;
}
html[data-skin="kimi"] .toc-dialog {
  border-color: var(--border);
  background: var(--bg);
  color: var(--text);
}
html[data-skin="kimi"] .toc-dialog-head { background: var(--surface); }
html[data-skin="kimi"] .toc-dialog-title { color: var(--muted); font-weight: 500; }
html[data-skin="kimi"] .toc-dialog-close { background: var(--surface); color: var(--muted); }

/* ---------- page nav / footer ---------- */

html[data-skin="kimi"] .page-navs {
  gap: 18px;
  margin-top: 84px;
  padding-top: 34px;
  border-top: 1px solid var(--border);
}

html[data-skin="kimi"] .page-nav {
  padding: 18px 20px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: transparent;
}
html[data-skin="kimi"] .page-nav:hover {
  border-color: var(--border-strong);
  background: var(--surface);
  text-decoration: none;
}
html[data-skin="kimi"] .page-nav span { color: var(--faint); font-size: 10px; letter-spacing: 0.08em; }
html[data-skin="kimi"] .page-nav strong { color: var(--text); font-family: var(--reading); font-weight: 500; }

html[data-skin="kimi"] .doc-footer {
  margin-top: 44px;
  padding-top: 22px;
  border-top: 1px solid var(--border);
  color: var(--faint);
  font-size: 11px;
}
html[data-skin="kimi"] .doc-footer a { color: var(--muted); }
html[data-skin="kimi"] .doc-footer a:hover { color: var(--text); }

html[data-skin="kimi"] .to-top {
  border-color: var(--border);
  background: var(--surface);
  color: var(--text);
  box-shadow: none;
}

/* ---------- motion ---------- */

@media (prefers-reduced-motion: no-preference) {
  html[data-skin="kimi"] .kimi-reveal {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
      transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  }
  html[data-skin="kimi"] .kimi-reveal.is-visible {
    opacity: 1;
    transform: none;
  }
}

html[data-skin="kimi"] .hero-media img {
  transition: transform 0.2s linear;
}

/* ---------- responsive ---------- */

@media (max-width: 1359px) {
  html[data-skin="kimi"] .toc { display: none; }
  html[data-skin="kimi"] .toc-fab { display: inline-flex; }
}

@media (max-width: 1080px) {
  html[data-skin="kimi"] .kimi-nav { display: none; }
}

@media (max-width: 900px) {
  html[data-skin="kimi"] .cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  html[data-skin="kimi"] .featured-card {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto auto;
  }
  html[data-skin="kimi"] .featured-media {
    grid-row: 1;
    grid-column: 1;
    min-height: 280px;
  }
  html[data-skin="kimi"] .featured-main { grid-row: 2; grid-column: 1; padding: 30px 30px 16px; }
  html[data-skin="kimi"] .featured-actions { grid-row: 3; grid-column: 1; padding: 0 30px 30px; }
}

@media (max-width: 760px) {
  html[data-skin="kimi"] .topbar { min-height: 61px; padding: 10px 20px; }
  html[data-skin="kimi"] .hero-inner { padding: 112px 20px 64px; }
  html[data-skin="kimi"] .hero-copy { padding-top: calc(18vh + 20px); }
  html[data-skin="kimi"] .hero-mark { width: min(70vw, 273px); }
  html[data-skin="kimi"] .kimi-hero-lower { padding-top: 96px; }
  html[data-skin="kimi"] .hero-scroll { bottom: 80px; font-size: 16px; }
  html[data-skin="kimi"] .contrib { padding-top: 58px; }
  html[data-skin="kimi"] .library-heading { margin-top: 40px; }
  html[data-skin="kimi"] .cards { grid-template-columns: 1fr; gap: 30px; }
  html[data-skin="kimi"] .doc-layout { padding-bottom: 84px; }
  html[data-skin="kimi"] .doc { width: calc(100vw - 32px); }
  html[data-skin="kimi"] .doc-header {
    min-height: 0;
    padding: 0;
    margin-bottom: 32px;
  }
  html[data-skin="kimi"] .doc-kicker { margin-top: 18px; }
  html[data-skin="kimi"] .doc-header h1 { font-size: 28px; line-height: 1.2; margin-top: 96px; }
  html[data-skin="kimi"] .doc-cover::before { font-size: clamp(1.7rem, 7vw, 2.4rem); }
  html[data-skin="kimi"] .prose { font-size: 16px; line-height: 1.55; }
  html[data-skin="kimi"] .prose h2 { font-size: 24px; line-height: 31px; margin-top: 64px; }
  html[data-skin="kimi"] .prose h3 { font-size: 20px; line-height: 26px; margin-top: 40px; }
  html[data-skin="kimi"] .prose figure,
  html[data-skin="kimi"] .prose p:has(> img:only-child) {
    width: calc(100vw - 32px);
  }
  html[data-skin="kimi"] .page-navs { margin-top: 60px; }
}

@media (max-width: 520px) {
  html[data-skin="kimi"] .hero h1 { font-size: 1rem; letter-spacing: 0.1em; text-indent: 0.1em; }
  html[data-skin="kimi"] .kimi-hero-lower .hero-stats { gap: 8px 16px; font-size: 11px; }
  html[data-skin="kimi"] .kimi-hero-lower .hero-stats strong { font-size: 17px; }
  html[data-skin="kimi"] .library { padding-left: 16px; padding-right: 16px; }
  html[data-skin="kimi"] .contrib { padding-left: 16px; padding-right: 16px; }
  html[data-skin="kimi"] .doc-layout { padding-left: 16px; padding-right: 16px; }
}

/* Print keeps the classic readable palette; the dark skin should not print. */
@media print {
  html[data-skin="kimi"] .topbar,
  html[data-skin="kimi"] .hero-media,
  html[data-skin="kimi"] .hero-scrim,
  html[data-skin="kimi"] .doc-cover,
  html[data-skin="kimi"] .reading-progress { display: none !important; }
  html[data-skin="kimi"] .doc-header h1 { margin-top: 0; }
  html[data-skin="kimi"] .doc-kicker { margin-top: 0; }
}

/* ---------- static cloud haze + hero appearance controls ---------- */

html[data-skin="kimi"] .hero-media {
  transform: scale(var(--hero-scale, 1));
  transform-origin: center;
}

html[data-skin="kimi"] .hero-mark-wrap {
  opacity: calc(var(--hero-ink, 1) * 0.8);
}

/* Appearance controls, matched to the reference: four compact glass tiles
   that expand into inline sliders on hover/focus. */
html[data-skin="kimi"] .kimi-controls {
  position: fixed;
  right: 40px;
  bottom: 40px;
  z-index: 26;
  display: flex;
  align-items: center;
  gap: 8px;
  color: #fff;
  font-family: var(--ui);
}

html[data-skin="kimi"] .kimi-control {
  --min-fill: 22px;
  --fill-size: calc(var(--min-fill) + (100% - 4px - var(--min-fill)) * var(--progress, 0));
  position: relative;
  display: block;
  flex: none;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: rgba(0, 0, 0, 0.20);
  color: #fff;
  cursor: pointer;
  overflow: hidden;
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  transition:
    width 0.4s cubic-bezier(0.68, -0.3, 0.32, 1.3),
    background-color 0.2s ease-in-out;
}

html[data-skin="kimi"] .kimi-control:hover,
html[data-skin="kimi"] .kimi-control:focus-within {
  width: 180px;
  background: rgba(0, 0, 0, 0.38);
}

html[data-skin="kimi"] .kimi-control:has(.kimi-control-range:focus-visible) {
  outline: 2px solid #fff;
  outline-offset: 3px;
}

html[data-skin="kimi"] .kimi-control-icon {
  position: absolute;
  inset: 8px;
  width: 24px;
  height: 24px;
  pointer-events: none;
  transition: opacity 0.15s ease-in-out;
}
html[data-skin="kimi"] .kimi-control-icon svg {
  display: block;
  width: 100%;
  height: 100%;
}

html[data-skin="kimi"] .kimi-control-fill,
html[data-skin="kimi"] .kimi-control-label,
html[data-skin="kimi"] .kimi-control-thumb {
  position: absolute;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.15s ease-in-out;
}

html[data-skin="kimi"] .kimi-control-fill {
  inset: 2px auto 2px 2px;
  width: var(--fill-size);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.20);
}

html[data-skin="kimi"] .kimi-control-label {
  top: 50%;
  left: 10px;
  width: max-content;
  font-size: 14px;
  line-height: 20px;
  white-space: nowrap;
  transform: translateY(-50%);
  transition:
    left 0.42s cubic-bezier(0.22, 1, 0.36, 1.12),
    transform 0.42s cubic-bezier(0.22, 1, 0.36, 1.12),
    opacity 0.15s ease-in-out;
}
html[data-skin="kimi"] .kimi-control[data-label-end] .kimi-control-label {
  left: calc(100% - 10px);
  transform: translate(-100%, -50%);
}

html[data-skin="kimi"] .kimi-control-thumb {
  top: 12px;
  left: calc(var(--fill-size) - 10px);
  width: 2px;
  height: 16px;
  border-radius: 19px;
  background: currentColor;
}

html[data-skin="kimi"] .kimi-control:hover .kimi-control-icon,
html[data-skin="kimi"] .kimi-control:focus-within .kimi-control-icon {
  opacity: 0;
}
html[data-skin="kimi"] .kimi-control:hover .kimi-control-fill,
html[data-skin="kimi"] .kimi-control:hover .kimi-control-label,
html[data-skin="kimi"] .kimi-control:hover .kimi-control-thumb,
html[data-skin="kimi"] .kimi-control:focus-within .kimi-control-fill,
html[data-skin="kimi"] .kimi-control:focus-within .kimi-control-label,
html[data-skin="kimi"] .kimi-control:focus-within .kimi-control-thumb {
  opacity: 1;
}

html[data-skin="kimi"] .kimi-control-range {
  position: absolute;
  inset: 2px;
  box-sizing: border-box;
  width: calc(100% - 4px);
  height: calc(100% - 4px);
  margin: 0;
  padding: 0 10px;
  border: 0;
  opacity: 0;
  cursor: ew-resize;
  touch-action: none;
  appearance: none;
  -webkit-appearance: none;
  background: transparent;
}
html[data-skin="kimi"] .kimi-control-range::-webkit-slider-thumb {
  appearance: none;
  -webkit-appearance: none;
  width: 2px;
  height: 16px;
}
html[data-skin="kimi"] .kimi-control-range::-moz-range-thumb {
  width: 2px;
  height: 16px;
  border: 0;
}

@media (max-width: 600px) {
  html[data-skin="kimi"] .kimi-controls {
    right: 16px;
    left: 16px;
    bottom: max(24px, env(safe-area-inset-bottom));
    justify-content: center;
    max-width: calc(100% - 32px);
  }
  html[data-skin="kimi"] .kimi-control:hover,
  html[data-skin="kimi"] .kimi-control:focus-within {
    flex-shrink: 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  html[data-skin="kimi"] .kimi-control,
  html[data-skin="kimi"] .kimi-control-icon,
  html[data-skin="kimi"] .kimi-control-fill,
  html[data-skin="kimi"] .kimi-control-label,
  html[data-skin="kimi"] .kimi-control-thumb {
    transition: none;
  }
}

/* White reader header over the dark cover needs a quiet scrim. */
html[data-skin="kimi"] body[data-page="doc"] .topbar:not(.is-scrolled) {
  background: linear-gradient(180deg, rgba(5, 8, 11, 0.42) 0%, rgba(5, 8, 11, 0) 100%);
}

/* Appearance controls arrive after the intro, like the reference. */
html[data-skin="kimi"] .kimi-controls {
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  transition: opacity 0.4s ease, transform 0.4s ease;
}
html[data-skin="kimi"].kimi-intro-done .kimi-controls {
  opacity: 1;
  pointer-events: auto;
  transform: none;
}
html[data-skin="kimi"].kimi-intro-done.kimi-past-hero .kimi-controls {
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
}


/* Moving cloud tracks over the static hero photograph. */
html[data-skin="kimi"] .hero-clouds {
  display: block;
  position: absolute;
  inset: 0;
  z-index: 2;
  overflow: hidden;
  pointer-events: none;
  opacity: var(--hero-cloud, 0.6);
  transform: translate3d(
    calc(var(--hero-pan-x, 0) * 18px),
    calc(var(--hero-pan-y, 0) * 12px),
    0
  );
  transition: opacity 0.3s ease, transform 0.45s cubic-bezier(0.22, 1, 0.36, 1);
}

html[data-skin="kimi"] .hero-clouds::before {
  content: "";
  position: absolute;
  inset: -8%;
  background:
    radial-gradient(ellipse 56% 30% at 50% 50%, rgba(238, 245, 249, 0.54), transparent 72%),
    radial-gradient(ellipse 38% 24% at 32% 62%, rgba(255, 255, 255, 0.34), transparent 74%),
    radial-gradient(ellipse 48% 22% at 68% 68%, rgba(244, 250, 253, 0.40), transparent 76%),
    radial-gradient(ellipse 86% 24% at 50% 90%, rgba(240, 247, 250, 0.24), transparent 80%);
  filter: blur(16px);
  mix-blend-mode: screen;
  opacity: calc(var(--hero-immersion, 1) * 0.54);
  pointer-events: none;
}

html[data-skin="kimi"] .hero-cloud {
  display: block;
  position: absolute;
  top: var(--y, 40%);
  left: 0;
  width: min(var(--size, 640px), 86vw);
  opacity: var(--op, 0.45);
  transform: translate3d(-120%, 0, 0);
  animation: kimi-cloud-drift calc(var(--dur, 90s) * var(--hero-cloud-scale, 1)) linear infinite;
  animation-delay: var(--delay, 0s);
  will-change: transform;
}

html[data-skin="kimi"] .hero-cloud img {
  display: block;
  width: 100%;
  height: auto;
  filter: blur(1.2px) brightness(1.02);
  animation: kimi-cloud-bob 11s ease-in-out infinite alternate;
}

@keyframes kimi-cloud-drift {
  from { transform: translate3d(-120%, 0, 0); }
  to { transform: translate3d(calc(100vw + 20%), 0, 0); }
}

@keyframes kimi-cloud-bob {
  from { transform: translateY(-8px) scale(1); }
  to { transform: translateY(8px) scale(1.025); }
}

@media (max-width: 760px) {
  html[data-skin="kimi"] .hero-clouds .hero-cloud:nth-child(n+5) { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  html[data-skin="kimi"] .hero-clouds { display: none; }
}