/* ============================================================
   SmaugBrain Themes — Shared design tokens, header, menu,
   footer, and base styles used by all pages.
   ============================================================ */

:root {
  --sm-shell-gutter: clamp(18px, 3vw, 40px);
  --sm-content-max: 1420px;
  --sm-bg: #090a0f;
  --sm-bg-soft: #11131a;
  --sm-text: #f6f4ef;
  --sm-text-muted: rgba(246, 244, 239, 0.6);
  --sm-border: rgba(255, 255, 255, 0.08);
  --sm-surface: rgba(255, 255, 255, 0.02);
  --sm-surface-hover: rgba(255, 255, 255, 0.05);
  --sm-cobalt: #4354ff;
  --sm-amber: #ff7636;
  --sm-header-shell: rgba(255, 255, 255, 0.04);
  --sm-menu-surface: #18284b;
  --sm-menu-surface-strong: #223763;
  --sm-menu-text: #edf3ff;
  --sm-menu-muted: rgba(237, 243, 255, 0.54);
  --sm-menu-border: rgba(152, 177, 255, 0.16);
  --sm-menu-link-hover: rgba(255, 255, 255, 0.08);
  --sm-menu-link-current: rgba(90, 120, 255, 0.2);
  --sm-shadow-soft: 0 18px 50px rgba(0, 0, 0, 0.35);
}

html[data-theme='light'] {
  --sm-bg: #eef3fb;
  --sm-bg-soft: #ffffff;
  --sm-text: #0f1828;
  --sm-text-muted: rgba(15, 24, 40, 0.62);
  --sm-border: rgba(15, 24, 40, 0.12);
  --sm-surface: rgba(255, 255, 255, 0.72);
  --sm-surface-hover: rgba(15, 24, 40, 0.04);
  --sm-cobalt: #3248db;
  --sm-amber: #f06b37;
  --sm-header-shell: rgba(255, 255, 255, 0.72);
  --sm-menu-surface: #dfe8ff;
  --sm-menu-surface-strong: #cfdcff;
  --sm-menu-text: #10203d;
  --sm-menu-muted: rgba(16, 32, 61, 0.56);
  --sm-menu-border: rgba(50, 72, 219, 0.16);
  --sm-menu-link-hover: rgba(50, 72, 219, 0.08);
  --sm-menu-link-current: rgba(50, 72, 219, 0.14);
  --sm-shadow-soft: 0 18px 40px rgba(41, 56, 88, 0.12);
}

html,
body {
  margin: 0;
  min-height: 100vh;
  font-family: 'Noto Sans SC', 'PingFang SC', sans-serif;
  background: var(--sm-bg);
  color: var(--sm-text);
  overflow-x: hidden;
}

/* ----- header bar ----- */
.sm-home-header {
  position: fixed;
  top: 14px;
  left: 0;
  width: 100%;
  z-index: 45;
  padding-inline: var(--sm-shell-gutter);
  box-sizing: border-box;
}

.admin-bar .sm-home-header { top: 46px; }

.sm-home-header-inner {
  width: min(100%, var(--sm-content-max));
  min-height: 78px;
  margin: 2px auto 0;
  padding: 0 clamp(14px, 1.8vw, 22px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  box-sizing: border-box;
}

.sm-home-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--sm-text);
  font-family: 'Space Grotesk', sans-serif;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.04em;
}

.sm-home-brand-mark {
  display: block;
  width: 46px;
  height: 46px;
  flex: 0 0 46px;
  object-fit: contain;
  filter: drop-shadow(0 12px 20px rgba(18, 20, 28, 0.18));
}

.sm-home-control-rail { display: flex; align-items: center; gap: 10px; margin-left: auto; }

/* ----- language switch ----- */
.sm-home-lang-switch {
  position: relative;
  z-index: 3;
  --sm-lang-backdrop:
    radial-gradient(circle at center, rgba(16, 30, 66, 0.18), rgba(4, 7, 16, 0.84) 56%, rgba(4, 6, 12, 0.94) 100%),
    linear-gradient(180deg, rgba(7, 10, 18, 0.82), rgba(2, 4, 8, 0.92));
  --sm-lang-stage-glow: radial-gradient(circle at center, rgba(100, 208, 255, 0.18), transparent 62%);
  --sm-lang-stage-ring: rgba(255, 255, 255, 0.04);
  --sm-lang-grid-major: rgba(255, 255, 255, 0.05);
  --sm-lang-grid-core: rgba(255, 255, 255, 0.02);
  --sm-lang-hud-bg: rgba(5, 9, 18, 0.62);
  --sm-lang-hud-border: rgba(255, 255, 255, 0.08);
  --sm-lang-kicker-color: rgba(245, 251, 255, 0.54);
  --sm-lang-text-strong: #f5fbff;
  --sm-lang-text-body: rgba(245, 251, 255, 0.68);
  --sm-lang-pill-bg: rgba(255, 255, 255, 0.05);
  --sm-lang-pill-border: rgba(255, 255, 255, 0.06);
  --sm-lang-label-bg: rgba(7, 12, 25, 0.54);
  --sm-lang-label-border: rgba(255, 255, 255, 0.08);
  --sm-lang-label-shadow: 0 18px 34px rgba(0, 0, 0, 0.18);
  --sm-lang-label-strong: #f5fbff;
  --sm-lang-label-muted: rgba(245, 251, 255, 0.64);
  --sm-lang-current-label-bg: rgba(34, 20, 6, 0.66);
  --sm-lang-current-label-border: rgba(255, 196, 92, 0.28);
  --sm-lang-current-label-shadow: 0 18px 40px rgba(34, 16, 2, 0.22);
  --sm-lang-current-strong: #ffdf8d;
  --sm-lang-current-muted: rgba(255, 232, 176, 0.72);
}

.sm-home-lang-toggle {
  position: relative;
  display: inline-grid;
  place-items: center;
  width: 46px;
  height: 46px;
  padding: 0;
  border-radius: 50%;
  border: 1px solid color-mix(in srgb, var(--sm-border) 75%, rgba(123, 214, 255, 0.4) 25%);
  color: var(--sm-text);
  background:
    radial-gradient(circle at 30% 30%, rgba(123, 214, 255, 0.24), transparent 42%),
    radial-gradient(circle at 72% 70%, rgba(255, 255, 255, 0.12), transparent 38%),
    color-mix(in srgb, var(--sm-surface) 88%, rgba(11, 16, 32, 0.95) 12%);
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.04),
    0 10px 28px rgba(8, 14, 26, 0.26);
  cursor: pointer;
  font: inherit;
  transition: transform 0.28s ease, box-shadow 0.28s ease, border-color 0.28s ease, background-color 0.28s ease;
}

.sm-home-lang-toggle::before,
.sm-home-lang-toggle::after {
  content: '';
  position: absolute;
  inset: 7px;
  border-radius: 50%;
  pointer-events: none;
}

.sm-home-lang-toggle::before {
  border: 1px solid rgba(123, 214, 255, 0.18);
  opacity: 0.9;
}

.sm-home-lang-toggle::after {
  inset: -8px;
  border: 1px solid rgba(123, 214, 255, 0.14);
  opacity: 0;
  transform: scale(0.84);
  transition: opacity 0.28s ease, transform 0.28s ease;
}

.sm-home-lang-toggle:hover,
.sm-home-theme-toggle:hover {
  transform: translateY(-2px) scale(1.03);
}

.sm-home-lang-toggle:active,
.sm-home-theme-toggle:active {
  transform: translateY(0) scale(0.98);
}

.sm-home-lang-toggle[aria-expanded='true'],
.sm-home-theme-toggle[aria-pressed='true'] {
  border-color: color-mix(in srgb, rgba(123, 214, 255, 0.82) 58%, var(--sm-border) 42%);
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.06),
    0 18px 42px rgba(55, 121, 255, 0.28);
}

.sm-home-lang-globe {
  display: inline-flex;
  position: relative;
  color: var(--sm-text);
  transition: transform 0.36s ease, color 0.24s ease;
}

.sm-home-lang-toggle[aria-expanded='true'] .sm-home-lang-globe {
  transform: rotate(-14deg) scale(1.06);
}

.sm-home-lang-toggle[aria-expanded='true']::after {
  opacity: 1;
  transform: scale(1);
}

body.sm-lang-overlay-open {
  overflow: hidden;
}

.sm-home-lang-overlay {
  position: fixed;
  inset: 0;
  z-index: 120;
}

.sm-home-lang-overlay[hidden] {
  display: none;
}

.sm-home-lang-backdrop {
  position: absolute;
  inset: 0;
  border: 0;
  background: var(--sm-lang-backdrop);
  backdrop-filter: blur(18px) saturate(1.06);
  cursor: pointer;
}

.sm-home-lang-modal {
  --sm-lang-stage-size: min(68vw, 620px);
  position: absolute;
  top: 50%;
  left: 50%;
  display: grid;
  place-items: center;
  width: min(calc(var(--sm-lang-stage-size) + 96px), calc(100vw - 28px));
  min-height: calc(var(--sm-lang-stage-size) + 84px);
  padding: 0;
  box-sizing: border-box;
  transform: translate(-50%, -50%);
  border-radius: 0;
  background: transparent;
  border: 0;
  box-shadow: none;
  backdrop-filter: none;
  outline: none;
}

.sm-home-lang-modal::before {
  content: none;
}

.sm-home-lang-stage {
  position: relative;
  width: min(var(--sm-lang-stage-size), calc(100vw - 108px));
  aspect-ratio: 1;
  border-radius: 50%;
  clip-path: circle(76% at 50% 50%);
  transform-origin: center center;
  will-change: transform, opacity, clip-path, filter;
}

.sm-home-lang-stage::before,
.sm-home-lang-stage::after {
  content: '';
  position: absolute;
  inset: -12%;
  border-radius: 50%;
  pointer-events: none;
}

.sm-home-lang-stage::before {
  background: var(--sm-lang-stage-glow);
  filter: blur(36px);
}

.sm-home-lang-stage::after {
  inset: 8%;
  border: 1px solid var(--sm-lang-stage-ring);
}

.sm-home-lang-orbit-grid {
  position: absolute;
  inset: -10%;
  border-radius: 50%;
  background:
    radial-gradient(circle at center, var(--sm-lang-grid-major) 0, var(--sm-lang-grid-core) 38%, transparent 62%),
    linear-gradient(90deg, var(--sm-lang-grid-major) 1px, transparent 1px),
    linear-gradient(180deg, var(--sm-lang-grid-major) 1px, transparent 1px);
  background-size: auto, 56px 56px, 56px 56px;
  opacity: 0.34;
  mask-image: radial-gradient(circle at center, rgba(0, 0, 0, 1) 46%, transparent 78%);
  pointer-events: none;
}

.sm-home-lang-render,
.sm-home-lang-hotspots {
  position: absolute;
  inset: 0;
  border-radius: 50%;
}

.sm-home-lang-render {
  overflow: hidden;
}

.sm-home-lang-hotspots {
  pointer-events: none;
}

.sm-home-lang-render canvas {
  display: block;
  width: 100%;
  height: 100%;
}

.sm-home-lang-hotspots {
  z-index: 2;
}

.sm-home-lang-hotspot {
  --sm-lang-hotspot-scale: 1;
  --sm-lang-hotspot-delay: 0s;
  position: absolute;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 0;
  border: 0;
  color: #f5fbff;
  text-decoration: none;
  background: transparent;
  pointer-events: auto;
  transform-origin: 50% 50%;
  transition: opacity 0.2s ease, transform 0.2s ease, filter 0.2s ease;
}

.sm-home-lang-hotspot:hover {
  filter: brightness(1.08);
}

.sm-home-lang-hotspot.is-current {
  filter: saturate(1.06) brightness(1.04);
}

.sm-home-lang-hotspot:focus-visible {
  outline: none;
}

.sm-home-lang-hotspot-dot {
  position: relative;
  display: inline-block;
  width: calc(12px * var(--sm-lang-hotspot-scale));
  height: calc(12px * var(--sm-lang-hotspot-scale));
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, #ffffff, #79d8ff 58%, #2558ff 100%);
  box-shadow:
    0 0 0 5px rgba(121, 216, 255, 0.08),
    0 0 26px rgba(121, 216, 255, 0.48);
  animation: sm-lang-spark 3.8s ease-in-out infinite;
  animation-delay: var(--sm-lang-hotspot-delay);
}

.sm-home-lang-hotspot.is-current .sm-home-lang-hotspot-dot {
  width: calc(14px * var(--sm-lang-hotspot-scale));
  height: calc(14px * var(--sm-lang-hotspot-scale));
  background: radial-gradient(circle at 35% 35%, #fff7d1, #ffd86a 54%, #ff8f34 100%);
  box-shadow:
    0 0 0 7px rgba(255, 187, 74, 0.12),
    0 0 34px rgba(255, 164, 67, 0.58);
}

.sm-home-lang-hotspot-dot::after {
  content: '';
  position: absolute;
  inset: -10px;
  border-radius: 50%;
  border: 1px solid rgba(121, 216, 255, 0.18);
  animation: sm-lang-pulse 2.1s ease-out infinite;
}

.sm-home-lang-hotspot.is-current .sm-home-lang-hotspot-dot::after {
  inset: -12px;
  border-color: rgba(255, 196, 92, 0.34);
}

.sm-home-lang-hotspot-label {
  display: grid;
  gap: 2px;
  min-width: 74px;
  padding: 9px 12px;
  border-radius: 16px;
  background: var(--sm-lang-label-bg);
  border: 1px solid var(--sm-lang-label-border);
  box-shadow: var(--sm-lang-label-shadow);
  backdrop-filter: blur(10px);
  opacity: 1;
  transform: translateY(0) scale(1);
  transform-origin: left center;
  pointer-events: none;
  transition: opacity 0.18s ease, transform 0.18s ease;
}

.sm-home-lang-hotspot.is-current .sm-home-lang-hotspot-label {
  border-color: var(--sm-lang-current-label-border);
  background: var(--sm-lang-current-label-bg);
  box-shadow: var(--sm-lang-current-label-shadow);
}

.sm-home-lang-hotspot-label strong {
  color: var(--sm-lang-label-strong);
  font-family: 'Space Grotesk', 'Noto Sans SC', sans-serif;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.sm-home-lang-hotspot-label span {
  color: var(--sm-lang-label-muted);
  font-size: 11px;
}

.sm-home-lang-hotspot.is-current .sm-home-lang-hotspot-label strong {
  color: var(--sm-lang-current-strong);
}

.sm-home-lang-hotspot.is-current .sm-home-lang-hotspot-label span {
  color: var(--sm-lang-current-muted);
}

.sm-home-lang-hotspot:hover .sm-home-lang-hotspot-label,
.sm-home-lang-hotspot:focus-visible .sm-home-lang-hotspot-label {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.sm-home-lang-hotspot:hover .sm-home-lang-hotspot-dot,
.sm-home-lang-hotspot:focus-visible .sm-home-lang-hotspot-dot {
  transform: scale(1.08);
}

.sm-home-lang-hud {
  position: absolute;
  left: 50%;
  bottom: 5%;
  z-index: 3;
  width: min(88%, 320px);
  padding: 14px 16px;
  border-radius: 20px;
  background: var(--sm-lang-hud-bg);
  border: 1px solid var(--sm-lang-hud-border);
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.24);
  backdrop-filter: blur(16px);
  transform: translateX(-50%);
}

.sm-home-lang-kicker,
.sm-home-lang-meta span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--sm-lang-kicker-color);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.sm-home-lang-hud strong {
  display: block;
  margin-top: 8px;
  color: var(--sm-lang-text-strong);
  font-family: 'Space Grotesk', 'Noto Sans SC', sans-serif;
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1.05;
  letter-spacing: -0.04em;
}

.sm-home-lang-hud p {
  margin: 10px 0 0;
  color: var(--sm-lang-text-body);
  font-size: 13px;
  line-height: 1.65;
}

.sm-home-lang-meta {
  position: absolute;
  top: 4%;
  left: 50%;
  z-index: 3;
  display: flex;
  align-items: center;
  gap: 12px;
  transform: translateX(-50%);
}

.sm-home-lang-meta span {
  padding: 7px 10px;
  border-radius: 999px;
  background: var(--sm-lang-pill-bg);
  border: 1px solid var(--sm-lang-pill-border);
}

html[data-theme='light'] .sm-home-lang-switch {
  --sm-lang-backdrop:
    radial-gradient(circle at center, rgba(132, 164, 255, 0.18), rgba(228, 236, 255, 0.84) 56%, rgba(237, 243, 251, 0.96) 100%),
    linear-gradient(180deg, rgba(241, 246, 255, 0.9), rgba(226, 234, 248, 0.94));
  --sm-lang-stage-glow: radial-gradient(circle at center, rgba(76, 140, 255, 0.16), transparent 62%);
  --sm-lang-stage-ring: rgba(15, 24, 40, 0.08);
  --sm-lang-grid-major: rgba(15, 24, 40, 0.08);
  --sm-lang-grid-core: rgba(50, 72, 219, 0.04);
  --sm-lang-hud-bg: rgba(255, 255, 255, 0.72);
  --sm-lang-hud-border: rgba(50, 72, 219, 0.12);
  --sm-lang-kicker-color: rgba(15, 24, 40, 0.54);
  --sm-lang-text-strong: #0f1828;
  --sm-lang-text-body: rgba(15, 24, 40, 0.68);
  --sm-lang-pill-bg: rgba(255, 255, 255, 0.74);
  --sm-lang-pill-border: rgba(50, 72, 219, 0.12);
  --sm-lang-label-bg: rgba(255, 255, 255, 0.84);
  --sm-lang-label-border: rgba(15, 24, 40, 0.08);
  --sm-lang-label-shadow: 0 18px 34px rgba(41, 56, 88, 0.14);
  --sm-lang-label-strong: #0f1828;
  --sm-lang-label-muted: rgba(15, 24, 40, 0.58);
  --sm-lang-current-label-bg: rgba(255, 247, 231, 0.92);
  --sm-lang-current-label-border: rgba(240, 107, 55, 0.22);
  --sm-lang-current-label-shadow: 0 18px 40px rgba(195, 118, 61, 0.14);
  --sm-lang-current-strong: #9b4c07;
  --sm-lang-current-muted: rgba(125, 76, 13, 0.72);
}

@keyframes sm-lang-pulse {
  0% {
    opacity: 0.78;
    transform: scale(0.72);
  }

  70% {
    opacity: 0;
    transform: scale(1.46);
  }

  100% {
    opacity: 0;
    transform: scale(1.56);
  }
}

@keyframes sm-lang-spark {
  0%, 100% {
    transform: scale(0.96);
    filter: brightness(0.98);
  }

  50% {
    transform: scale(1.08);
    filter: brightness(1.14);
  }
}

@media (max-width: 900px) {
  .sm-home-lang-modal {
    --sm-lang-stage-size: min(76vw, 520px);
    width: min(100vw - 26px, 700px);
    min-height: calc(var(--sm-lang-stage-size) + 140px);
    padding: 26px 20px 22px;
    border-radius: 28px;
  }

  .sm-home-lang-stage {
    width: min(var(--sm-lang-stage-size), calc(100vw - 74px));
  }

  .sm-home-lang-hud {
    bottom: 3%;
    width: min(92%, 300px);
  }
}

@media (max-width: 680px) {
  .sm-home-control-rail {
    gap: 8px;
  }

  .sm-home-lang-modal {
    --sm-lang-stage-size: min(82vw, 430px);
    min-height: calc(var(--sm-lang-stage-size) + 156px);
    padding: 54px 14px 18px;
  }

  .sm-home-lang-hotspot {
    gap: 7px;
  }

  .sm-home-lang-hotspot-label {
    min-width: 0;
    padding: 8px 10px;
  }

  .sm-home-lang-hotspot-label strong {
    font-size: 11px;
  }

  .sm-home-lang-hotspot-label span {
    font-size: 10px;
  }

  .sm-home-lang-meta {
    top: 6%;
    gap: 8px;
  }

  .sm-home-lang-meta span {
    letter-spacing: 0.12em;
  }
}

@media (prefers-reduced-motion: reduce) {
  .sm-home-lang-hotspot-dot::after {
    animation: none;
  }
}

.sm-home-theme-toggle {
  position: relative;
  display: inline-block;
  padding: 1rem;
  cursor: pointer;
  -webkit-tap-highlight-color: rgba(255, 255, 255, 0);
}

.sm-home-theme-toggle-copy {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.sm-home-theme-toggle-input {
  height: 0;
  width: 0;
  visibility: hidden;
  position: absolute;
}

.sm-home-theme-toggle:focus-visible {
  outline: 2px solid color-mix(in srgb, var(--sm-cobalt) 72%, white 28%);
  outline-offset: 4px;
}

.sm-home-theme-demo-planet {
  position: relative;
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  overflow: hidden;
  background: radial-gradient(3.75em, 99%, transparent 100%);
  background-color: #f2c94c;
  background-repeat: no-repeat;
  will-change: background;
  transition: all 400ms ease;
  backface-visibility: hidden;
  transform: translate3d(0, 0, 0);
}

.sm-home-theme-demo-planet::after {
  content: '';
  width: 2rem;
  height: 2rem;
  position: absolute;
  border-radius: 50%;
  background-color: #828894;
  opacity: 0;
  transform: translate(2em, -2em);
  will-change: opacity, transform, background-color;
  transition: opacity 0.4s ease, transform 0.4s ease, background-color 0.4s ease;
}

.sm-home-theme-demo-elements {
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
  transition: transform 0.4s ease;
}

.sm-home-theme-demo-elements svg {
  position: absolute;
  width: 7px;
  height: 7px;
  opacity: 1;
  transition: transform 0.4s ease, opacity 0.2s ease, width 0.2s ease, height 0.2s ease;
}

.sm-home-theme-demo-elements svg circle {
  fill: #f2c94c;
  transition: fill 0.4s ease;
}

.sm-home-theme-demo-elements svg:first-child {
  transform: translate(1.8em, 0.35em);
}

.sm-home-theme-demo-elements svg:nth-child(2) {
  transform: translate(2.8em, 0.7em);
}

.sm-home-theme-demo-elements svg:nth-child(3) {
  transform: translate(3.2em, 1.8em);
}

.sm-home-theme-demo-elements svg:nth-child(4) {
  transform: translate(2.8em, 2.8em);
}

.sm-home-theme-demo-elements svg:nth-child(5) {
  transform: translate(1.8em, 3.2em);
}

.sm-home-theme-demo-elements svg:nth-child(6) {
  transform: translate(0.7em, 2.8em);
}

.sm-home-theme-demo-elements svg:nth-child(7) {
  transform: translate(0.35em, 1.8em);
}

.sm-home-theme-demo-elements svg:nth-child(8) {
  transform: translate(0.7em, 0.7em);
}

.sm-home-theme-toggle-input:checked + .sm-home-theme-demo-planet {
  background-color: #d7d7d8;
}

.sm-home-theme-toggle-input:checked + .sm-home-theme-demo-planet::after {
  opacity: 1;
  transform: translate(0.6em, -0.5em);
}

.sm-home-theme-toggle-input:checked ~ .sm-home-theme-demo-elements {
  transform: rotate(180deg);
}

.sm-home-theme-toggle-input:checked ~ .sm-home-theme-demo-elements svg:first-child {
  transform: translate(2em, 1em);
  opacity: 0;
}

.sm-home-theme-toggle-input:checked ~ .sm-home-theme-demo-elements svg:nth-child(2) {
  transform: translate(3em, 1.5em);
  opacity: 0;
}

.sm-home-theme-toggle-input:checked ~ .sm-home-theme-demo-elements svg:nth-child(3),
.sm-home-theme-toggle-input:checked ~ .sm-home-theme-demo-elements svg:nth-child(4) {
  transform: translate(3em, 2em);
  opacity: 0;
}

.sm-home-theme-toggle-input:checked ~ .sm-home-theme-demo-elements svg:nth-child(5) {
  transform: translate(1.9em, 2.6em);
  width: 0.3em;
  height: 0.3em;
}

.sm-home-theme-toggle-input:checked ~ .sm-home-theme-demo-elements svg:nth-child(6) {
  transform: translate(1.4em, 2.5em);
  width: 0.3em;
  height: 0.3em;
}

.sm-home-theme-toggle-input:checked ~ .sm-home-theme-demo-elements svg:nth-child(7) {
  transform: translate(1.1em, 1.6em);
  width: 0.7em;
  height: 0.7em;
}

.sm-home-theme-toggle-input:checked ~ .sm-home-theme-demo-elements svg:nth-child(8) {
  width: 0.45em;
  height: 0.45em;
  transform: translate(1.7em, 2.1em);
}

.sm-home-theme-toggle-input:checked ~ .sm-home-theme-demo-elements svg:nth-child(5) circle,
.sm-home-theme-toggle-input:checked ~ .sm-home-theme-demo-elements svg:nth-child(6) circle,
.sm-home-theme-toggle-input:checked ~ .sm-home-theme-demo-elements svg:nth-child(7) circle,
.sm-home-theme-toggle-input:checked ~ .sm-home-theme-demo-elements svg:nth-child(8) circle {
  fill: rgba(215, 215, 216, 0.125);
}

/* ----- rail pill / context pill ----- */
.sm-home-rail-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border-radius: 999px;
  border: 0;
  color: var(--sm-text);
  background: var(--sm-surface);
  box-shadow: inset 0 0 0 1px var(--sm-border);
  font-weight: 700;
  text-decoration: none;
  transition: transform 0.24s ease, box-shadow 0.24s ease, background-color 0.24s ease, color 0.24s ease;
}

.sm-home-context-pill { pointer-events: none; color: rgba(246,244,239,0.88); background: rgba(255,255,255,0.05); }

/* ----- menu toggle button ----- */
.sm-home-menu-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  min-height: 46px;
  padding: 0 18px;
  border-radius: 999px;
  border: 0;
  color: var(--sm-text);
  background: var(--sm-bg-soft);
  box-shadow: inset 0 0 0 1px var(--sm-border);
  cursor: pointer;
  font: inherit;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.sm-home-rail-pill:hover,
.sm-home-menu-toggle:hover { transform: translateY(-2px); }

.sm-home-menu-toggle-copy { display: grid; overflow: hidden; line-height: 1; }
.sm-home-menu-toggle-copy span { grid-area: 1 / 1; transition: transform 0.28s ease, opacity 0.28s ease; }
.sm-home-menu-toggle-copy span:last-child { transform: translateY(120%); opacity: 0; }
.sm-home-menu-toggle-dot { width: 10px; height: 10px; border-radius: 50%; background: var(--sm-amber); box-shadow: 0 0 18px rgba(255,139,74,0.52); }
.sm-home-menu-toggle[aria-expanded='true'] .sm-home-menu-toggle-copy span:first-child,
.sm-home-menu-toggle.is-open .sm-home-menu-toggle-copy span:first-child { transform: translateY(-120%); opacity: 0; }
.sm-home-menu-toggle[aria-expanded='true'] .sm-home-menu-toggle-copy span:last-child,
.sm-home-menu-toggle.is-open .sm-home-menu-toggle-copy span:last-child { transform: translateY(0); opacity: 1; }
.sm-home-menu-toggle[aria-expanded='true'] .sm-home-menu-toggle-dot,
.sm-home-menu-toggle.is-open .sm-home-menu-toggle-dot { background: var(--sm-cobalt); box-shadow: 0 0 18px rgba(43,73,255,0.34); }

body.sm-confirm-open {
  overflow: hidden;
}

/* ----- shared confirm dialog ----- */
.sm-confirm-overlay {
  position: fixed;
  inset: 0;
  z-index: 52;
  display: grid;
  place-items: center;
  padding: 24px;
}

.sm-confirm-overlay[hidden] {
  display: none;
}

.sm-confirm-backdrop {
  position: absolute;
  inset: 0;
  border: 0;
  background: radial-gradient(circle at 50% 18%, rgba(255,255,255,0.14), transparent 28%), rgba(3,4,8,0.72);
  backdrop-filter: blur(18px);
  cursor: pointer;
}

.sm-confirm-dialog {
  position: relative;
  width: min(460px, calc(100vw - 32px));
  padding: 28px 28px 24px;
  border-radius: 26px;
  background: linear-gradient(180deg, rgba(251,249,244,0.96), rgba(244,239,230,0.94));
  border: 1px solid rgba(255,255,255,0.72);
  box-shadow: 0 32px 90px rgba(8, 10, 22, 0.28);
  color: #151613;
}

.sm-confirm-dialog::before {
  content: '';
  position: absolute;
  inset: 1px;
  border-radius: inherit;
  background: linear-gradient(135deg, rgba(255,255,255,0.62), rgba(255,255,255,0.08));
  pointer-events: none;
}

.sm-confirm-close {
  position: absolute;
  top: 18px;
  right: 18px;
  width: 38px;
  height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 50%;
  background: rgba(21,22,19,0.06);
  color: #151613;
  cursor: pointer;
  transition: transform 0.2s ease, background 0.2s ease;
}

.sm-confirm-close span {
  position: absolute;
  width: 16px;
  height: 2px;
  border-radius: 999px;
  background: currentColor;
}

.sm-confirm-close span:first-child {
  transform: rotate(45deg);
}

.sm-confirm-close span:last-child {
  transform: rotate(-45deg);
}

.sm-confirm-close:hover {
  transform: scale(1.04);
  background: rgba(21,22,19,0.1);
}

.sm-confirm-kicker {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 12px;
  border-radius: 999px;
  background: rgba(21,22,19,0.08);
  color: rgba(21,22,19,0.72);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.sm-confirm-title,
.sm-confirm-message,
.sm-confirm-actions {
  position: relative;
  z-index: 1;
}

.sm-confirm-title {
  margin: 18px 0 10px;
  font-family: 'Space Grotesk', 'Noto Sans SC', sans-serif;
  font-size: clamp(26px, 3vw, 32px);
  line-height: 1.06;
  letter-spacing: -0.04em;
}

.sm-confirm-message {
  margin: 0;
  color: rgba(21,22,19,0.68);
  font-size: 15px;
  line-height: 1.7;
}

.sm-confirm-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 24px;
}

.sm-confirm-action {
  min-width: 112px;
  min-height: 46px;
  padding: 0 18px;
  border-radius: 999px;
  border: 0;
  font: inherit;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: -0.02em;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.sm-confirm-action:hover {
  transform: translateY(-1px);
}

.sm-confirm-action-secondary {
  background: rgba(21,22,19,0.08);
  color: #151613;
}

.sm-confirm-action-primary {
  background: linear-gradient(135deg, #151613, #303336);
  color: #f8f5ef;
  box-shadow: 0 16px 36px rgba(21,22,19,0.2);
}

/* ----- menu overlay ----- */
.sm-home-menu-overlay {
  position: fixed;
  inset: 0;
  z-index: 40;
  display: block;
  padding: 0;
}

.sm-home-menu-overlay[hidden] {
  display: none;
}

.sm-home-menu-backdrop {
  position: absolute; inset: 0; border: 0;
  background: radial-gradient(circle at 80% 0%, rgba(255,255,255,0.1), transparent 30%), rgba(3,4,8,0.65);
  backdrop-filter: blur(18px); cursor: pointer;
}

.sm-home-menu-panel {
  position: absolute; z-index: 1;
  top: var(--sm-menu-top, 92px);
  left: var(--sm-menu-left, auto);
  width: min(380px, calc(100vw - 40px));
  display: flex; flex-direction: column;
  gap: 10px; overflow: visible; padding: 0;
  background: transparent; border: 0;
  box-shadow: none;
}

.sm-home-menu-card {
  position: relative;
  border-radius: 18px;
  background: var(--sm-menu-surface);
  border: 1px solid var(--sm-menu-border);
  box-shadow: var(--sm-shadow-soft);
  overflow: hidden;
  text-decoration: none;
  transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

/* 导航链接卡片 */
.sm-home-menu-card-nav {
  padding: 20px 24px;
}

.sm-home-menu-card-nav .sm-home-menu-group {
  display: flex; flex-direction: column;
}

.sm-home-menu-card-nav .sm-home-menu-group-label {
  display: inline-flex; align-items: center;
  min-height: 24px; padding: 0; margin-bottom: 8px;
  color: var(--sm-menu-muted); font-size: 10px; font-weight: 800;
  letter-spacing: 0.18em; text-transform: uppercase;
}

.sm-home-menu-link-item {
  display: flex; align-items: center; justify-content: space-between;
  margin: 0 -8px;
  padding: 12px 14px;
  border-radius: 14px;
  color: var(--sm-menu-text);
  text-decoration: none;
  font-family: 'Space Grotesk', 'Noto Sans SC', sans-serif;
  font-size: 17px;
  font-weight: 500;
  letter-spacing: -0.02em;
  border: 1px solid transparent;
  transition: color 0.2s ease, transform 0.2s ease, background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.sm-home-menu-link-item:hover {
  color: var(--sm-menu-text);
  background: var(--sm-menu-link-hover);
  border-color: var(--sm-menu-border);
  transform: translateX(4px);
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.03);
}

.sm-home-menu-link-item.is-current {
  color: var(--sm-menu-text);
  background: var(--sm-menu-link-current);
  border-color: var(--sm-menu-border);
}

.sm-home-menu-link-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: rgba(255,255,255,0.18);
  flex-shrink: 0;
  transition: background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.sm-home-menu-link-item.is-current .sm-home-menu-link-dot {
  background: var(--sm-cobalt);
  box-shadow: 0 0 0 5px rgba(67,84,255,0.16);
}

.sm-home-menu-link-item:hover .sm-home-menu-link-dot {
  background: var(--sm-amber);
  transform: scale(1.1);
  box-shadow: 0 0 0 5px rgba(240,107,55,0.14);
}

/* Newsletter 卡片 */
.sm-home-menu-card-newsletter {
  padding: 22px 24px;
}

.sm-home-menu-card-newsletter h3 {
  margin: 0 0 14px;
  font-family: 'Space Grotesk', 'Noto Sans SC', sans-serif;
  font-size: 20px;
  font-weight: 500;
  line-height: 1.25;
  letter-spacing: -0.03em;
  color: var(--sm-menu-text);
}

.sm-home-menu-newsletter-form {
  display: flex; align-items: center; gap: 6px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  padding: 5px 5px 5px 14px;
}

.sm-home-menu-newsletter-form input {
  flex: 1;
  border: 0; background: transparent;
  font: inherit; font-size: 14px;
  color: var(--sm-menu-text); outline: none;
}

.sm-home-menu-newsletter-form input::placeholder {
  color: var(--sm-menu-muted);
}

.sm-home-menu-newsletter-form button {
  width: 38px; height: 38px;
  border-radius: 10px; border: 0;
  background: var(--sm-menu-text); color: var(--sm-menu-surface);
  cursor: pointer;
  display: grid; place-items: center;
  flex-shrink: 0;
  transition: background 0.2s ease, transform 0.2s ease;
}

.sm-home-menu-newsletter-form button:hover {
  background: var(--sm-amber);
  transform: scale(1.05);
}

/* CTA 卡片 */
.sm-home-menu-card-cta {
  display: flex; flex-direction: column; gap: 6px;
  padding: 20px 24px;
}

.sm-home-menu-card-cta span {
  color: var(--sm-menu-muted);
  font-size: 10px; font-weight: 800;
  letter-spacing: 0.18em; text-transform: uppercase;
}

.sm-home-menu-card-cta strong {
  font-family: 'Space Grotesk', 'Noto Sans SC', sans-serif;
  font-size: 18px;
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: -0.03em;
  color: var(--sm-menu-text);
}

.sm-home-menu-card-cta:hover {
  background: var(--sm-menu-surface-strong);
  border-color: rgba(99, 125, 255, 0.28);
}

.sm-home-menu-card-cta-dark {
  background: #0f1830;
  color: #eef3ff;
  border-color: rgba(147, 173, 255, 0.14);
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.sm-home-menu-card-cta-dark span {
  color: rgba(238,243,255,0.52);
}

.sm-home-menu-card-cta-dark strong {
  color: #eef3ff;
  flex: 1;
}

.sm-home-menu-card-cta-dark:hover {
  background: #162449;
  border-color: rgba(147,173,255,0.24);
}

.sm-home-menu-card-arrow {
  width: 20px; height: 20px;
  flex-shrink: 0;
  opacity: 0.7;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.sm-home-menu-card-cta:hover .sm-home-menu-card-arrow,
.sm-home-menu-card-cta-dark:hover .sm-home-menu-card-arrow {
  transform: translate(2px, -2px);
  opacity: 1;
}

@media (max-width: 680px) {
  .sm-home-menu-overlay { padding: 0; }
  .sm-home-menu-panel { width: min(360px, calc(100vw - 28px)); gap: 8px; }
  .sm-home-menu-card { border-radius: 16px; }
  .sm-home-menu-card-nav { padding: 16px 20px; }
  .sm-home-menu-link-item { font-size: 16px; padding: 10px 12px; }
  .sm-home-menu-card-newsletter { padding: 18px 20px; }
  .sm-home-menu-card-newsletter h3 { font-size: 18px; }
  .sm-home-menu-card-cta { padding: 16px 20px; }
  .sm-home-menu-card-cta strong { font-size: 16px; }
}

/* ----- buttons ----- */
.sm-home-btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 48px; padding: 0 20px; border-radius: 999px;
  text-decoration: none; font-weight: 700; letter-spacing: -0.02em;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}
.sm-home-btn:hover { transform: translateY(-2px); }
.sm-home-btn-solid { color: #fff; background: var(--sm-cobalt); box-shadow: inset 0 0 0 1px var(--sm-border); }
.sm-home-btn-ghost { color: var(--sm-text); border: 1px solid var(--sm-border); background: var(--sm-surface); }
.sm-home-btn-ghost-light { color: #f5f1ea; border-color: rgba(255,255,255,0.16); background: rgba(255,255,255,0.04); }

html[data-theme='light'] .sm-home-btn-ghost-light {
  color: var(--sm-text);
  border-color: rgba(15, 24, 40, 0.12);
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 12px 24px rgba(41, 56, 88, 0.08);
}

/* ----- shared surface shell ----- */
.sm-surface-shell { position: relative; }

.sm-surface-grid {
  position: fixed; inset: 0; pointer-events: none;
  background-image: radial-gradient(rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 42px 42px; opacity: 0.12;
  mask-image: linear-gradient(180deg, rgba(0,0,0,0.92), transparent 84%);
}

.sm-surface-aurora {
  position: fixed; width: min(42vw,540px); aspect-ratio: 1;
  border-radius: 999px; filter: blur(80px); opacity: 0.22; pointer-events: none; z-index: 0; will-change: transform;
}
.sm-surface-aurora-a { top: 8%; left: -10%; background: radial-gradient(circle, rgba(67,84,255,0.28), transparent 72%); animation: smAuroraA 20s ease-in-out infinite; }
.sm-surface-aurora-b { top: 38%; right: -14%; background: radial-gradient(circle, rgba(255,118,54,0.24), transparent 70%); animation: smAuroraB 26s ease-in-out infinite; }
.sm-surface-aurora-c { bottom: 4%; left: 30%; background: radial-gradient(circle, rgba(111,231,255,0.14), transparent 76%); animation: smAuroraC 22s ease-in-out infinite; }

@keyframes smAuroraA { 0%,100% { transform: translate3d(0,0,0) scale(1); } 50% { transform: translate3d(6%,4%,0) scale(1.06); } }
@keyframes smAuroraB { 0%,100% { transform: translate3d(0,0,0) scale(1); } 50% { transform: translate3d(-8%,8%,0) scale(0.94); } }
@keyframes smAuroraC { 0%,100% { transform: translate3d(0,0,0) scale(1); } 50% { transform: translate3d(3%,-7%,0) scale(1.1); } }

/* ----- shared footer ----- */
.sm-surface-footer { position: relative; z-index: 1; padding: 0 var(--sm-shell-gutter) 42px; }
.sm-surface-footer-inner { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; }
.sm-surface-footer-inner h2 { margin: 14px 0 10px; font-size: clamp(26px,3vw,40px); line-height: 1.12; letter-spacing: -0.04em; font-family: 'Space Grotesk', 'Noto Sans SC', sans-serif; }
.sm-surface-footer-links { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; justify-content: flex-end; }
.sm-surface-footer-links a { color: rgba(246,244,239,0.56); text-decoration: none; font-size: 14px; transition: color 0.2s ease; }
.sm-surface-footer-links a:hover { color: var(--sm-text); }

/* ----- reveal animation ----- */
[data-reveal] { opacity: 0; transform: translateY(24px); }

/* ----- pointer trail canvas ----- */
body canvas.sm-common-pointer-trail { cursor: default !important; }

/* ----- body states ----- */
body.smaug-route-surface.sm-home-menu-open,
body.smaug-route-home.sm-home-menu-open { overflow: hidden; }