/* ============================================================
   Liquid Glass — 可复用的材质令牌 + 组件
   两层实现：
   1) 通用层（所有浏览器）：backdrop blur / saturate + 渐变描边高光 + 阴影
   2) 渐进层（Chromium）：SVG feDisplacementMap 作为 backdrop-filter，
      让玻璃边缘产生真实的折射（见 liquid-glass.js）
   ============================================================ */

/* ---------- 1. Tokens ---------- */
:root {
  color-scheme: light;
  --font-ui: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text",
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;

  /* material */
  --lg-blur: 18px;
  --lg-sat: 190%;
  --lg-bright: 1.1;
  --lg-tint-rgb: 255 255 255;
  --lg-fill-a: 0.18;
  --lg-fill-a-lo: 0.07;
  --lg-fill-a-hi: 0.3;
  --lg-rim-a: 0.95;

  /* page / type */
  --page-bg: #eef2ec;
  --ink: #0f1f18;
  --ink-soft: rgba(15, 31, 24, 0.68);
  --ink-faint: rgba(15, 31, 24, 0.46);
  --accent: #3f7157;
  --accent-2: #6fa388;
  --focus: #2f6349;
  --hairline: rgba(15, 31, 24, 0.1);
  --hover-fill: rgba(255, 255, 255, 0.26);
  --seg-track: rgba(15, 31, 24, 0.07);
  --seg-active: rgba(255, 255, 255, 0.86);
  --field-fill: rgba(255, 255, 255, 0.26);
  --solid: #f7f8f4;

  /* depth */
  --lg-shadow:
    0 34px 70px -30px rgba(6, 24, 16, 0.42),
    0 12px 26px -16px rgba(6, 24, 16, 0.3);
  --lg-inner:
    inset 0 1.5px 0 rgba(255, 255, 255, 0.78),
    inset 0 -1px 0 rgba(255, 255, 255, 0.16),
    inset 1px 0 0 rgba(255, 255, 255, 0.24),
    inset -1px 0 0 rgba(255, 255, 255, 0.24),
    inset 0 -24px 36px -26px rgba(4, 20, 14, 0.3),
    inset 0 22px 32px -26px rgba(255, 255, 255, 0.5);
  --lg-radius: 28px;

  /* scene */
  --veil: rgba(247, 249, 244, 0.18);
  --veil-gradient: linear-gradient(
    180deg,
    rgba(247, 249, 244, 0.34) 0%,
    rgba(247, 249, 244, 0.05) 24%,
    rgba(247, 249, 244, 0.02) 60%,
    rgba(247, 249, 244, 0.36) 100%
  );
  --photo-filter: saturate(1.22) contrast(1.04) brightness(1);
  --grain-opacity: 0.14;
}

html[data-theme="dark"] {
  color-scheme: dark;
  --lg-tint-rgb: 16 23 25;
  --lg-fill-a: 0.32;
  --lg-fill-a-lo: 0.18;
  --lg-fill-a-hi: 0.3;
  --lg-rim-a: 0.5;

  --page-bg: #0a1113;
  --ink: #f1f7f3;
  --ink-soft: rgba(241, 247, 243, 0.72);
  --ink-faint: rgba(241, 247, 243, 0.5);
  --accent: #7fb79b;
  --accent-2: #4f8a6c;
  --focus: #a8d3bd;
  --hairline: rgba(241, 247, 243, 0.12);
  --hover-fill: rgba(255, 255, 255, 0.1);
  --seg-track: rgba(255, 255, 255, 0.08);
  --seg-active: rgba(255, 255, 255, 0.18);
  --field-fill: rgba(255, 255, 255, 0.07);
  --solid: #151c1b;

  --lg-shadow:
    0 40px 80px -34px rgba(0, 0, 0, 0.85),
    0 14px 30px -18px rgba(0, 0, 0, 0.6);
  --lg-inner:
    inset 0 1px 0 rgba(255, 255, 255, 0.3),
    inset 0 -1px 0 rgba(255, 255, 255, 0.05),
    inset 0 0 0 1px rgba(255, 255, 255, 0.06);

  --veil: rgba(5, 12, 14, 0.5);
  --veil-gradient: linear-gradient(
    180deg,
    rgba(5, 12, 14, 0.62) 0%,
    rgba(5, 12, 14, 0.3) 30%,
    rgba(5, 12, 14, 0.34) 66%,
    rgba(5, 12, 14, 0.72) 100%
  );
  --photo-filter: saturate(1.18) contrast(1.04) brightness(0.86);
  --grain-opacity: 0.1;
}

/* ---------- 2. Base ---------- */
* { box-sizing: border-box; }

html { scroll-behavior: smooth; }
html, body { height: 100%; }

body {
  margin: 0;
  min-height: 100vh;
  background: var(--page-bg);
  color: var(--ink);
  font-family: var(--font-ui);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  transition: color 0.4s ease, background-color 0.4s ease;
}

button, input { font: inherit; color: inherit; }
button { cursor: pointer; border: 0; background: none; }
h1, h2, h3, p { margin: 0; }
svg { flex-shrink: 0; }

.i {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.i--fill { fill: currentColor; stroke: none; }

:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
}

::selection { background: color-mix(in srgb, var(--accent) 35%, transparent); }

/* ---------- 3. Scene ---------- */
.scene {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
}

.scene__photo {
  position: absolute;
  inset: -3%;
  background: url("assets/bg.jpg") center / cover no-repeat;
  filter: var(--photo-filter);
  transform: scale(1.02);
  transition: filter 0.6s ease;
}

.scene__glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(70px);
  opacity: 0.5;
  mix-blend-mode: soft-light;
  transition: opacity 0.5s ease;
}
.scene__glow--a {
  width: 46vw;
  height: 46vw;
  left: -8vw;
  top: -12vw;
  background: radial-gradient(circle, rgba(255, 246, 214, 0.9), transparent 65%);
}
.scene__glow--b {
  width: 44vw;
  height: 44vw;
  right: -10vw;
  bottom: -14vw;
  background: radial-gradient(circle, rgba(92, 154, 255, 0.6), transparent 68%);
}
html[data-theme="dark"] .scene__glow { opacity: 0.28; }

.scene__veil {
  position: absolute;
  inset: 0;
  background: var(--veil-gradient);
  transition: background 0.5s ease;
}

.scene__grain {
  position: absolute;
  inset: 0;
  opacity: var(--grain-opacity);
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23n)' opacity='0.6'/%3E%3C/svg%3E");
  background-size: 180px 180px;
}

/* ---------- 4. Glass material ---------- */
.lg-glass {
  position: relative;
  isolation: isolate;
  border-radius: var(--lg-radius);
  color: var(--ink);
  background:
    linear-gradient(
      152deg,
      rgb(var(--lg-tint-rgb) / calc(var(--lg-fill-a) + 0.14)) 0%,
      rgb(var(--lg-tint-rgb) / var(--lg-fill-a-lo)) 52%,
      rgb(var(--lg-tint-rgb) / var(--lg-fill-a)) 100%
    ),
    rgb(var(--lg-tint-rgb) / var(--lg-fill-a));
  -webkit-backdrop-filter: blur(var(--lg-blur)) saturate(var(--lg-sat)) brightness(var(--lg-bright));
  backdrop-filter: blur(var(--lg-blur)) saturate(var(--lg-sat)) brightness(var(--lg-bright));
  box-shadow: var(--lg-shadow), var(--lg-inner);
  transition: background 0.5s ease, box-shadow 0.5s ease, color 0.4s ease;
}
.lg-glass {
  background:
    radial-gradient(120% 90% at 8% -10%, rgb(214 238 255 / calc(var(--lg-fill-a) * 0.9)), transparent 55%),
    radial-gradient(90% 80% at 100% 115%, rgb(255 246 222 / calc(var(--lg-fill-a) * 0.7)), transparent 60%),
    linear-gradient(
      152deg,
      rgb(var(--lg-tint-rgb) / calc(var(--lg-fill-a) + 0.12)) 0%,
      rgb(var(--lg-tint-rgb) / var(--lg-fill-a-lo)) 52%,
      rgb(var(--lg-tint-rgb) / var(--lg-fill-a)) 100%
    ),
    rgb(var(--lg-tint-rgb) / var(--lg-fill-a));
}

/* 镜面高光：沿描边的渐变，顶部最亮 */
.lg-glass::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1.5px;
  background:
    linear-gradient(
      154deg,
      rgba(255, 255, 255, calc(var(--lg-rim-a) * 1)) 0%,
      rgba(255, 255, 255, calc(var(--lg-rim-a) * 0.5)) 18%,
      rgba(255, 255, 255, 0) 44%,
      rgba(255, 255, 255, calc(var(--lg-rim-a) * 0.14)) 74%,
      rgba(255, 255, 255, calc(var(--lg-rim-a) * 0.66)) 100%
    ),
    conic-gradient(
      from 218deg at 50% 50%,
      rgba(255, 255, 255, 0.28) 0deg,
      rgba(255, 255, 255, 0) 60deg,
      rgba(255, 255, 255, 0.1) 150deg,
      rgba(255, 255, 255, 0) 230deg,
      rgba(255, 255, 255, 0.22) 330deg,
      rgba(255, 255, 255, 0.28) 360deg
    );
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  z-index: 2;
}

/* 表面反光：跟随指针的柔光 + 顶部天光 */
.lg-glass::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background:
    radial-gradient(
      130% 85% at 50% -22%,
      rgba(255, 255, 255, 0.44),
      rgba(255, 255, 255, 0.08) 48%,
      transparent 68%
    ),
    radial-gradient(26% 18% at 14% 6%, rgba(255, 255, 255, 0.42), transparent 70%),
    radial-gradient(
      46% 46% at var(--lg-mx, 50%) var(--lg-my, 0%),
      rgba(255, 255, 255, 0.24),
      transparent 72%
    );
  mix-blend-mode: screen;
  opacity: 0.7;
  pointer-events: none;
  z-index: 1;
  transition: opacity 0.35s ease;
}
html[data-theme="dark"] .lg-glass::after { opacity: 0.42; }

/* 子元素浮在高光之上 */
.lg-glass > * {
  position: relative;
  z-index: 3;
}

/* 折射增强（仅当 JS 生成了 --lg-refraction 时生效） */
@supports (backdrop-filter: url(#lg-probe)) {
  html:not(.lg-no-refract) .lg-refract {
    -webkit-backdrop-filter: blur(var(--lg-blur)) saturate(var(--lg-sat)) brightness(var(--lg-bright));
    backdrop-filter:
      var(--lg-refraction)
      blur(var(--lg-blur))
      saturate(var(--lg-sat))
      brightness(var(--lg-bright));
  }
}

/* 材质变体 */
.lg-material--clear {
  --lg-fill-a: 0.1;
  --lg-fill-a-lo: 0.04;
  --lg-fill-a-hi: 0.16;
  --lg-shadow:
    0 26px 54px -28px rgba(6, 24, 16, 0.4),
    0 8px 20px -14px rgba(6, 24, 16, 0.26);
}
html[data-theme="dark"] .lg-material--clear { --lg-fill-a: 0.2; --lg-fill-a-lo: 0.07; --lg-fill-a-hi: 0.28; }

.lg-material--tinted {
  --ink: #f3fbf6;
  --ink-soft: rgba(243, 251, 246, 0.8);
  --ink-faint: rgba(243, 251, 246, 0.58);
  --hairline: rgba(255, 255, 255, 0.2);
  --hover-fill: rgba(255, 255, 255, 0.16);
  background:
    linear-gradient(152deg, rgba(112, 164, 135, 0.86) 0%, rgba(63, 107, 84, 0.72) 55%, rgba(45, 84, 65, 0.82) 100%);
  box-shadow:
    0 34px 66px -30px rgba(12, 40, 26, 0.66),
    0 12px 24px -16px rgba(12, 40, 26, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.46),
    inset 0 -1px 0 rgba(0, 0, 0, 0.14);
}

/* 减少透明度 / 提高对比（辅助功能） */
.lg-reduced-transparency .lg-glass {
  background: var(--solid) !important;
  -webkit-backdrop-filter: none !important;
  backdrop-filter: none !important;
  box-shadow: 0 18px 40px -24px rgba(0, 0, 0, 0.4), inset 0 0 0 1px var(--hairline);
}
.lg-reduced-transparency .lg-glass::after { opacity: 0.2; }

/* ---------- 5. Navigation ---------- */
.nav {
  position: fixed;
  top: 18px;
  left: 0;
  right: 0;
  margin-inline: auto;
  width: min(1080px, calc(100vw - 40px));
  z-index: 70;
}

.nav__bar {
  display: flex;
  align-items: center;
  gap: 20px;
  min-height: 64px;
  padding: 9px 12px 9px 20px;
  border-radius: 999px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: -0.01em;
}
.brand__orb {
  width: 27px;
  height: 27px;
  border-radius: 50%;
  background:
    radial-gradient(circle at 32% 26%, rgba(255, 255, 255, 0.95), transparent 38%),
    conic-gradient(from 210deg, #9fd3b6, #6aa8c8, #c7d7a8, #9fd3b6);
  box-shadow:
    inset 0 1px 2px rgba(255, 255, 255, 0.8),
    inset 0 -2px 4px rgba(20, 60, 40, 0.3),
    0 4px 10px -2px rgba(20, 60, 40, 0.35);
}
.brand__name { font-weight: 620; font-size: 15px; }
.brand__tag {
  font-size: 9px;
  letter-spacing: 0.16em;
  color: var(--ink-faint);
  border: 1px solid var(--hairline);
  border-radius: 6px;
  padding: 2px 5px;
  transform: translateY(-1px);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 2px;
}
.nav__links a {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 13.5px;
  padding: 8px 14px;
  border-radius: 999px;
  transition: background-color 0.2s ease, color 0.2s ease;
}
.nav__links a:hover { background: var(--hover-fill); color: var(--ink); }
.nav__links a.is-active {
  color: var(--ink);
  background: var(--hover-fill);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.5);
}

.nav__tools {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 10px;
}

.icon-btn {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: var(--ink-soft);
  background: var(--hover-fill);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.45),
    inset 0 0 0 1px rgba(255, 255, 255, 0.14);
  transition: transform 0.18s ease, background-color 0.2s ease;
}
.icon-btn:hover { background: color-mix(in srgb, var(--hover-fill) 70%, white 30%); }
.icon-btn:active { transform: scale(0.94); }

.avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: #f7fbf8;
  font-size: 14px;
  font-weight: 600;
  background:
    radial-gradient(circle at 30% 24%, rgba(255, 255, 255, 0.5), transparent 42%),
    linear-gradient(150deg, #6e9a7f, #355c46);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.55),
    inset 0 -2px 6px rgba(0, 0, 0, 0.2),
    0 6px 14px -6px rgba(10, 40, 26, 0.5);
  transition: transform 0.18s ease;
}
.avatar:hover { transform: translateY(-1px); }
.avatar--lg { width: 44px; height: 44px; font-size: 15px; }

/* ---------- 6. Menu ---------- */
.menu {
  position: fixed;
  top: 92px;
  right: max(22px, calc((100vw - 1080px) / 2));
  width: 256px;
  padding: 8px;
  border-radius: 24px;
  z-index: 90;
  --lg-blur: 30px;
  transform-origin: top right;
  animation: menu-in 0.18s cubic-bezier(0.2, 0.9, 0.3, 1);
}
.menu[hidden] { display: none; }

@keyframes menu-in {
  from { opacity: 0; transform: scale(0.92) translateY(-6px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

.menu__head {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 10px 10px 12px;
}
.menu__name { font-size: 13.5px; font-weight: 600; }
.menu__mail { font-size: 11px; color: var(--ink-faint); }
.menu__sep { height: 1px; margin: 2px 8px 8px; background: var(--hairline); }
.menu__item {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 14px;
  font-size: 13.5px;
  color: var(--ink-soft);
  text-align: left;
  transition: background-color 0.16s ease, color 0.16s ease;
}
.menu__item:hover { background: var(--hover-fill); color: var(--ink); }

/* ---------- 7. Page layout ---------- */
.page {
  position: relative;
  z-index: 1;
  width: min(1080px, calc(100vw - 40px));
  margin: 0 auto;
  padding: 108px 0 168px;
}

.stage {
  display: grid;
  grid-template-columns: minmax(0, 1.34fr) minmax(320px, 0.66fr);
  gap: 20px;
  align-items: stretch;
}

/* ---------- 8. Hero ---------- */
.hero {
  padding: 34px 38px 28px;
  min-height: 500px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 196px;
  grid-template-rows: 1fr auto;
  column-gap: 30px;
  row-gap: 24px;
  --lg-radius: 34px;
}

.hero__top {
  grid-column: 1;
  grid-row: 1;
  align-self: center;
}

.hero__specs {
  grid-column: 2;
  grid-row: 1;
  align-self: center;
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding-left: 20px;
  border-left: 1px solid var(--hairline);
}
.specs__cap {
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.spec { display: flex; gap: 10px; }
.spec__no {
  font-size: 9.5px;
  color: var(--ink-faint);
  font-variant-numeric: tabular-nums;
  padding-top: 1px;
}
.spec__k {
  display: block;
  font-size: 9.5px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.spec__v {
  display: block;
  margin-top: 2px;
  font-size: 12.5px;
  color: var(--ink-soft);
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 10.5px;
  font-weight: 620;
  letter-spacing: 0.17em;
  color: var(--ink-faint);
  text-transform: uppercase;
}
.eyebrow__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 16%, transparent);
}

.hero h1 {
  margin-top: 22px;
  font-size: clamp(54px, 5.3vw, 78px);
  line-height: 0.96;
  letter-spacing: -0.035em;
  font-weight: 680;
}
.hero__en {
  display: block;
  margin-top: 16px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.3em;
  color: var(--ink-faint);
  text-transform: uppercase;
}

.lede {
  margin-top: 18px;
  max-width: 42ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.hero__actions {
  margin-top: 26px;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

/* buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 46px;
  padding: 0 20px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 570;
  letter-spacing: 0.005em;
  position: relative;
  z-index: 3;
  transition:
    transform 0.18s cubic-bezier(0.2, 0.9, 0.3, 1),
    box-shadow 0.2s ease,
    background-color 0.2s ease;
}
.btn:active { transform: scale(0.965); }

.btn--tinted {
  color: #f5fbf7;
  background: linear-gradient(158deg, #6ba07f 0%, #40735a 58%, #345f49 100%);
  border: 1px solid rgba(255, 255, 255, 0.28);
  box-shadow:
    0 14px 28px -14px rgba(14, 52, 34, 0.62),
    inset 0 1px 0 rgba(255, 255, 255, 0.45),
    inset 0 -1px 0 rgba(0, 0, 0, 0.16);
}
.btn--tinted:hover {
  transform: translateY(-1px);
  box-shadow:
    0 18px 34px -14px rgba(14, 52, 34, 0.6),
    inset 0 1px 0 rgba(255, 255, 255, 0.55),
    inset 0 -1px 0 rgba(0, 0, 0, 0.16);
}

.btn--quiet {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.24);
  border: 1px solid rgba(255, 255, 255, 0.4);
  box-shadow:
    0 8px 18px -12px rgba(8, 30, 20, 0.38),
    inset 0 1px 0 rgba(255, 255, 255, 0.6);
}
html[data-theme="dark"] .btn--quiet {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.16);
}
.btn--quiet:hover { background: rgba(255, 255, 255, 0.34); }
html[data-theme="dark"] .btn--quiet:hover { background: rgba(255, 255, 255, 0.13); }

.btn--sm { height: 38px; padding: 0 16px; font-size: 12.5px; }

.hero__quick {
  margin-top: 0;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.quick {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 40px;
  padding: 0 14px;
  border-radius: 14px;
  font-size: 12.5px;
  color: var(--ink-soft);
  background: rgba(255, 255, 255, 0.18);
  border: 1px solid rgba(255, 255, 255, 0.34);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.5);
}
.quick .i { width: 16px; height: 16px; opacity: 0.8; }
.quick strong { font-weight: 600; color: var(--ink); font-variant-numeric: tabular-nums; }
html[data-theme="dark"] .quick {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.12);
}

.hero__bottom {
  grid-column: 1 / -1;
  grid-row: 2;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  padding-top: 16px;
  border-top: 1px solid var(--hairline);
}

.hero__hint {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 11.5px;
  color: var(--ink-faint);
  padding-bottom: 2px;
}
.pulse {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent-2);
  box-shadow: 0 0 0 0 color-mix(in srgb, var(--accent-2) 55%, transparent);
  animation: pulse 2.4s ease-out infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--accent-2) 55%, transparent); }
  70% { box-shadow: 0 0 0 9px transparent; }
  100% { box-shadow: 0 0 0 0 transparent; }
}

/* ---------- 9. Console ---------- */
.console {
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  --lg-radius: 32px;
}

.console__head {
  display: flex;
  align-items: center;
  gap: 10px;
}
.console__head h2 { font-size: 15px; font-weight: 620; letter-spacing: 0.01em; }
.live {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 9px;
  letter-spacing: 0.18em;
  color: var(--ink-faint);
}
.live__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #6fbf8a;
  animation: pulse 2.4s ease-out infinite;
}

.control { display: flex; flex-direction: column; gap: 9px; }
.control + .control {
  border-top: 1px solid var(--hairline);
  padding-top: 12px;
}
.control--switch {
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.control--switch + .control--switch { padding-top: 14px; }
.control__label { font-size: 12.5px; font-weight: 560; color: var(--ink-soft); }
.control__desc { font-size: 11px; color: var(--ink-faint); margin-top: 3px; line-height: 1.5; }
.control__row { display: flex; align-items: center; justify-content: space-between; }
.control__out {
  font-size: 11.5px;
  color: var(--ink-faint);
  font-variant-numeric: tabular-nums;
}

/* segmented */
.seg {
  display: flex;
  gap: 2px;
  padding: 3px;
  border-radius: 999px;
  background: var(--seg-track);
  box-shadow:
    inset 0 1px 2px rgba(0, 0, 0, 0.06),
    inset 0 0 0 1px rgba(255, 255, 255, 0.12);
}
.seg__btn {
  flex: 1;
  height: 32px;
  border-radius: 999px;
  font-size: 12.5px;
  color: var(--ink-soft);
  transition: background-color 0.18s ease, color 0.18s ease, box-shadow 0.18s ease;
}
.seg__btn:hover { color: var(--ink); }
.seg__btn.is-active {
  background: var(--seg-active);
  color: var(--ink);
  box-shadow:
    0 1px 2px rgba(0, 0, 0, 0.12),
    inset 0 1px 0 rgba(255, 255, 255, 0.7);
}
.seg--lg { padding: 4px; }
.seg--lg .seg__btn { height: 40px; font-size: 13px; }

/* switch */
.switch {
  position: relative;
  display: inline-flex;
  flex-shrink: 0;
  cursor: pointer;
}
.switch input {
  position: absolute;
  inset: 0;
  opacity: 0;
  width: 1px;
  height: 1px;
  margin: 0;
}
.switch__track {
  width: 48px;
  height: 29px;
  border-radius: 999px;
  background: rgba(15, 31, 24, 0.16);
  box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.18);
  transition: background-color 0.22s ease;
  display: block;
  position: relative;
}
html[data-theme="dark"] .switch__track { background: rgba(255, 255, 255, 0.14); }
.switch__knob {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 23px;
  height: 23px;
  border-radius: 50%;
  background: #fbfdfb;
  box-shadow:
    0 2px 5px rgba(0, 0, 0, 0.22),
    inset 0 1px 0 rgba(255, 255, 255, 0.9);
  transition: transform 0.24s cubic-bezier(0.2, 0.9, 0.3, 1);
}
.switch input:checked + .switch__track {
  background: linear-gradient(150deg, #6ba07f, #3d7057);
}
.switch input:checked + .switch__track .switch__knob { transform: translateX(19px); }
.switch input:focus-visible + .switch__track {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
}

/* range */
input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 20px;
  background: transparent;
  cursor: pointer;
}
input[type="range"]::-webkit-slider-runnable-track {
  height: 6px;
  border-radius: 99px;
  background: linear-gradient(
    90deg,
    var(--accent) 0 var(--fill, 50%),
    color-mix(in srgb, var(--ink) 14%, transparent) var(--fill, 50%) 100%
  );
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.12);
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  margin-top: -6px;
  border-radius: 50%;
  background: #fbfdfb;
  border: 1px solid rgba(0, 0, 0, 0.06);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.26);
}
input[type="range"]::-moz-range-track {
  height: 6px;
  border-radius: 99px;
  background: color-mix(in srgb, var(--ink) 14%, transparent);
}
input[type="range"]::-moz-range-progress {
  height: 6px;
  border-radius: 99px;
  background: var(--accent);
}
input[type="range"]::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border: 0;
  border-radius: 50%;
  background: #fbfdfb;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.26);
}

.console__note {
  margin-top: 2px;
  padding-top: 14px;
  border-top: 1px solid var(--hairline);
  font-size: 11px;
  line-height: 1.65;
  color: var(--ink-faint);
}

/* ---------- 9.5 Scroll cue ---------- */
.scroll-cue {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  width: fit-content;
  margin: 38px auto 0;
  color: rgba(255, 255, 255, 0.82);
  text-shadow: 0 1px 10px rgba(0, 0, 0, 0.35);
  pointer-events: none;
}
.scroll-cue__label {
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.32em;
  text-transform: uppercase;
}
.scroll-cue__line {
  position: relative;
  width: 1px;
  height: 36px;
  background: linear-gradient(to bottom, currentColor, transparent);
  opacity: 0.6;
}
.scroll-cue__line::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: currentColor;
  transform: translate(-50%, 50%);
  opacity: 0.9;
}
html[data-theme="dark"] .scroll-cue { color: rgba(241, 247, 243, 0.72); }

/* ---------- 10. Materials ---------- */
.materials { margin-top: clamp(40px, 20vh, 200px); }

.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  padding: 13px 20px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.22);
  border: 1px solid rgba(255, 255, 255, 0.4);
  -webkit-backdrop-filter: blur(18px) saturate(170%);
  backdrop-filter: blur(18px) saturate(170%);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.55),
    0 10px 24px -16px rgba(8, 30, 20, 0.3);
}
html[data-theme="dark"] .section-head {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.14);
}
.section-head__lead {
  display: flex;
  align-items: baseline;
  gap: 14px;
}
.section-head__no {
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--ink-faint);
  font-variant-numeric: tabular-nums;
}
.section-head h2 { font-size: 15px; font-weight: 620; }
.section-head p {
  font-size: 12px;
  line-height: 1.6;
  color: var(--ink-faint);
  max-width: 56ch;
  text-align: right;
}

.material-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  margin-top: 16px;
}

.material-card {
  padding: 24px;
  min-height: 196px;
  border-radius: 26px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  --lg-radius: 26px;
}
.material-card__top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
}
.material-card__name {
  font-size: 12px;
  font-weight: 650;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.material-card__cn { font-size: 11.5px; color: var(--ink-faint); }
.material-card__desc {
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--ink-soft);
  flex: 1;
}
.material-card .btn { align-self: flex-start; }

/* ---------- 11. Components ---------- */
.components { margin-top: 40px; }

.component-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  margin-top: 16px;
}

.component-card {
  padding: 22px;
  border-radius: 26px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-height: 208px;
  --lg-radius: 26px;
}
.component-card__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
}
.component-card__title { font-size: 13.5px; font-weight: 600; }
.component-card__meta {
  font-size: 9.5px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.component-card__foot { font-size: 11px; color: var(--ink-faint); }

.meter {
  height: 8px;
  border-radius: 99px;
  background: color-mix(in srgb, var(--ink) 12%, transparent);
  overflow: hidden;
}
.meter__bar {
  display: block;
  height: 100%;
  width: var(--v);
  border-radius: 99px;
  background: linear-gradient(90deg, var(--accent-2), var(--accent));
  box-shadow: 0 0 10px color-mix(in srgb, var(--accent) 40%, transparent);
}

.toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  font-size: 13px;
  color: var(--ink-soft);
  padding: 2px 0;
}

.field {
  display: flex;
  align-items: center;
  gap: 8px;
  height: 44px;
  padding: 0 14px;
  border-radius: 999px;
  background: var(--field-fill);
  border: 1px solid rgba(255, 255, 255, 0.34);
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.07);
  color: var(--ink-faint);
}
html[data-theme="dark"] .field { border-color: rgba(255, 255, 255, 0.14); }
.field input {
  flex: 1;
  min-width: 0;
  border: 0;
  background: transparent;
  outline: none;
  font-size: 13px;
  color: var(--ink);
}
.field input::placeholder { color: var(--ink-faint); }

.chip-row { display: flex; gap: 6px; flex-wrap: wrap; }
.chip {
  font-size: 11.5px;
  padding: 5px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.22);
  border: 1px solid rgba(255, 255, 255, 0.32);
  color: var(--ink-soft);
}
html[data-theme="dark"] .chip {
  background: rgba(255, 255, 255, 0.07);
  border-color: rgba(255, 255, 255, 0.12);
}
.chip--add {
  width: 28px;
  height: 28px;
  padding: 0;
  display: grid;
  place-items: center;
  font-size: 15px;
  color: var(--ink-soft);
}

/* ---------- 12. Notes ---------- */
.notes {
  margin-top: 48px;
  padding: 16px 20px;
  border-radius: 18px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 11.5px;
  line-height: 1.6;
  color: var(--ink-soft);
  background: rgba(255, 255, 255, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.36);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  backdrop-filter: blur(16px) saturate(160%);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.5);
}
html[data-theme="dark"] .notes {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.12);
}
.notes__dim { opacity: 0.75; }

/* ---------- 13. Player ---------- */
.player {
  position: fixed;
  right: 26px;
  bottom: 26px;
  width: 332px;
  padding: 14px;
  border-radius: 24px;
  display: flex;
  align-items: center;
  gap: 12px;
  z-index: 45;
  --lg-radius: 24px;
}
.player__art {
  width: 54px;
  height: 54px;
  border-radius: 15px;
  flex-shrink: 0;
  display: grid;
  place-items: center;
  background:
    radial-gradient(circle at 28% 22%, rgba(255, 255, 255, 0.75), transparent 40%),
    conic-gradient(from 200deg, #9fceb2, #6f9fc4, #c9d7a6, #9fceb2);
  box-shadow:
    inset 0 1px 2px rgba(255, 255, 255, 0.6),
    0 4px 12px -4px rgba(10, 40, 26, 0.45);
}
.player__orb {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 0 10px rgba(255, 255, 255, 0.9);
}
.player__meta { flex: 1; min-width: 0; }
.player__label {
  font-size: 9px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.player__title { font-size: 13.5px; font-weight: 600; margin-top: 2px; }
.player__artist { font-size: 11px; color: var(--ink-faint); }
.player__progress {
  margin-top: 8px;
  height: 4px;
  border-radius: 99px;
  background: color-mix(in srgb, var(--ink) 14%, transparent);
  overflow: hidden;
}
.player__progress span {
  display: block;
  height: 100%;
  width: var(--v);
  border-radius: inherit;
  background: linear-gradient(90deg, var(--accent-2), var(--accent));
}
.player__btn {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  flex-shrink: 0;
  display: grid;
  place-items: center;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.24);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.5),
    inset 0 0 0 1px rgba(255, 255, 255, 0.14);
  transition: transform 0.18s ease;
}
.player__btn:hover { transform: scale(1.05); }
.player__btn:active { transform: scale(0.95); }
.player__btn .i { width: 17px; height: 17px; }

/* ---------- 14. Dock ---------- */
.dock {
  position: fixed;
  left: 50%;
  bottom: 22px;
  transform: translateX(-50%);
  display: flex;
  gap: 4px;
  padding: 8px 10px;
  border-radius: 28px;
  z-index: 46;
  --lg-radius: 28px;
  --lg-blur: 30px;
  --lg-fill-a: 0.3;
  --lg-fill-a-lo: 0.16;
}
.dock__item {
  width: 62px;
  height: 52px;
  border-radius: 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  font-size: 9px;
  letter-spacing: 0.02em;
  color: var(--ink-soft);
  transition: background-color 0.18s ease, color 0.18s ease, transform 0.18s ease;
}
.dock__item .i { width: 19px; height: 19px; }
.dock__item:hover { background: var(--hover-fill); color: var(--ink); }
.dock__item:active { transform: scale(0.95); }
.dock__item.is-active {
  background: rgba(255, 255, 255, 0.26);
  color: var(--ink);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.55),
    inset 0 0 0 1px rgba(255, 255, 255, 0.12);
}
html[data-theme="dark"] .dock__item.is-active {
  background: rgba(255, 255, 255, 0.12);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.18);
}

/* ---------- 15. Lens ---------- */
.lens {
  position: fixed;
  left: max(4px, calc((100vw - 1080px) / 2 - 164px));
  top: 32vh;
  bottom: auto;
  width: 156px;
  height: 156px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  cursor: grab;
  touch-action: none;
  user-select: none;
  z-index: 55;
  --lg-radius: 50%;
  --lg-blur: 2px;
  --lg-fill-a: 0.08;
  --lg-fill-a-lo: 0.06;
  --lg-fill-a-hi: 0.2;
  --lg-shadow:
    0 36px 60px -22px rgba(4, 20, 14, 0.55),
    0 10px 24px -12px rgba(4, 20, 14, 0.4),
    inset 0 0 0 1.5px rgba(255, 255, 255, 0.55),
    inset 0 2px 3px rgba(255, 255, 255, 0.8),
    inset 0 -18px 30px -20px rgba(255, 255, 255, 0.5);
  transition: box-shadow 0.25s ease, transform 0.2s ease;
}
.lens::before {
  padding: 2px;
  background: conic-gradient(
    from 225deg at 50% 50%,
    rgba(255, 255, 255, 0.95) 0deg,
    rgba(255, 255, 255, 0.1) 55deg,
    rgba(255, 255, 255, 0.55) 130deg,
    rgba(255, 255, 255, 0.05) 210deg,
    rgba(255, 255, 255, 0.7) 300deg,
    rgba(255, 255, 255, 0.95) 360deg
  );
}
.lens:hover { --lg-fill-a: 0.17; }
.lens.is-dragging { cursor: grabbing; }
.lens__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: var(--ink);
  opacity: 0.7;
  pointer-events: none;
  text-shadow: 0 1px 6px rgba(255, 255, 255, 0.4);
}
html[data-theme="dark"] .lens__inner { text-shadow: 0 1px 8px rgba(0, 0, 0, 0.5); }
.lens__inner .i { width: 22px; height: 22px; opacity: 0.85; }

@media (max-width: 1399px) {
  .lens { display: none; }
  .hero__hint { display: none; }
}

/* ---------- 16. Accessibility & motion ---------- */
.lg-no-refract .lg-refract {
  -webkit-backdrop-filter: blur(var(--lg-blur)) saturate(var(--lg-sat)) brightness(var(--lg-bright)) !important;
  backdrop-filter: blur(var(--lg-blur)) saturate(var(--lg-sat)) brightness(var(--lg-bright)) !important;
}

@media (prefers-reduced-transparency: reduce) {
  .lg-glass {
    background: var(--solid) !important;
    -webkit-backdrop-filter: none !important;
    backdrop-filter: none !important;
  }
  .lg-glass::after { display: none; }
}

@media (prefers-contrast: more) {
  .lg-glass {
    background: color-mix(in srgb, var(--solid) 82%, var(--ink) 18%) !important;
    -webkit-backdrop-filter: blur(10px) saturate(120%) !important;
    backdrop-filter: blur(10px) saturate(120%) !important;
  }
  .lg-glass::before { --lg-rim-a: 1; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

/* ---------- 17. Responsive ---------- */
@media (max-width: 1080px) {
  .player { display: none; }
  .materials { margin-top: 64px; }
  .scroll-cue { display: none; }
  .stage { grid-template-columns: minmax(0, 1fr); }
  .hero { min-height: 0; }
  .console { max-width: 620px; margin-inline: auto; }
}

@media (max-width: 860px) {
  .nav__links { display: none; }
  .brand__tag { display: none; }
  .page { width: calc(100vw - 28px); padding-top: 96px; padding-bottom: 150px; }
  .hero { padding: 28px 26px 26px; --lg-radius: 28px; }
  .hero h1 { font-size: clamp(46px, 13vw, 64px); }
  .lede { font-size: 13.5px; }
  .console { padding: 22px; max-width: none; }
  .material-grid, .component-grid { grid-template-columns: minmax(0, 1fr); }
  .lens { width: 132px; height: 132px; --lg-blur: 14px; left: 18px; bottom: 110px; }
  .lens__inner { font-size: 9px; }
  .lens__inner .i { width: 18px; height: 18px; }
  .dock { width: calc(100vw - 28px); justify-content: space-between; padding: 7px 8px; }
  .dock__item { width: auto; flex: 1; }
  .hero__hint { display: none; }
  .menu { top: 84px; right: 16px; }
}

@media (max-width: 760px) {
  .hero {
    grid-template-columns: minmax(0, 1fr);
    grid-template-rows: auto auto auto;
    row-gap: 22px;
  }
  .hero__top { grid-column: 1; grid-row: 1; }
  .hero__specs {
    grid-column: 1;
    grid-row: 2;
    align-self: stretch;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px 18px;
    padding-left: 0;
    padding-top: 16px;
    border-left: 0;
    border-top: 1px solid var(--hairline);
  }
  .specs__cap { grid-column: 1 / -1; }
  .spec__no { display: none; }
  .spec__v { font-size: 12px; }
  .hero__bottom { grid-column: 1; grid-row: 3; }
}

@media (max-width: 520px) {
  .nav__bar { min-height: 58px; padding: 7px 9px 7px 14px; gap: 10px; }
  .brand__name { font-size: 14px; }
  .avatar, .icon-btn { width: 38px; height: 38px; }
  .hero__actions .btn { flex: 1; }
  .section-head p { display: none; }
  .player { display: none; }
}