/* finesse · register=brand · A=cool-paper + single-azure · B=700/400 clamp display
 * C=full-bleed-hero / hairline-band / split-demo / asym-grid / dark-band
 * D=css-3d glass stack + IO reveal · E=engineered glass + blueprint hairlines
 * SOUL=7 SPECTACLE=5 DENSITY=3 */

/* =========================================================================
 * 0. BASE
 * ========================================================================= */
*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  overflow-x: clip;
  scroll-behavior: smooth;
  color-scheme: light;
}

body {
  margin: 0;
  overflow-x: clip;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: var(--t-body);
  line-height: 1.62;
  letter-spacing: .005em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-optical-sizing: auto;
  text-rendering: optimizeLegibility;
  touch-action: manipulation;
}

img, svg, canvas { display: block; max-width: 100%; }
button, input, textarea, select { font: inherit; color: inherit; }

::selection { background: var(--accent); color: #fff; }

:where(a) { color: inherit; text-decoration: none; }

:where(a, button, input, textarea, summary, [tabindex]):focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0;
}

/* 中文断行保护：不让一个词被拆到两行 */
.nowrap { white-space: nowrap; }

.skip-link {
  position: fixed; top: 8px; left: 8px; z-index: 200;
  transform: translateY(-160%);
  padding: 12px 18px; border-radius: var(--r-xs);
  background: var(--ink); color: var(--paper);
  font-size: var(--t-small); font-weight: 600;
  transition: transform .18s var(--ease);
}
.skip-link:focus { transform: translateY(0); }

/* =========================================================================
 * 1. TOKENS
 * ========================================================================= */
:root {
  --paper:      #FBFBFD;
  --paper-2:    #F5F5F7;
  --paper-3:    #EDEDF0;
  --ink:        #1D1D1F;
  --ink-2:      #5F5F66;
  --ink-3:      #6E6E73;
  --line:       rgba(0, 0, 0, .08);
  --line-soft:  rgba(0, 0, 0, .05);
  --line-hard:  rgba(0, 0, 0, .16);

  --accent:       #2557E8;
  --accent-ink:   #1B44C4;
  --accent-soft:  rgba(37, 87, 232, .09);
  --accent-line:  rgba(37, 87, 232, .22);
  --accent-rgb:   37, 87, 232;

  --nav-bg:     rgba(251, 251, 253, .72);
  --panel-bg:   rgba(255, 255, 255, .72);
  --field-bg:   rgba(0, 0, 0, .028);
  --shadow-1:   0 1px 2px rgba(0, 0, 0, .04), 0 8px 24px -12px rgba(0, 0, 0, .16);
  --shadow-2:   0 2px 6px rgba(0, 0, 0, .05), 0 28px 64px -28px rgba(0, 0, 0, .28);

  --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text",
               "Segoe UI Variable Display", "Segoe UI", "Helvetica Neue",
               "PingFang SC", "HarmonyOS Sans SC", "Source Han Sans SC",
               "Noto Sans CJK SC", "Microsoft YaHei UI", "Microsoft YaHei",
               system-ui, sans-serif;
  --font-mono: ui-monospace, "SF Mono", "JetBrains Mono", "Cascadia Mono",
               Consolas, "Liberation Mono", monospace;

  --t-display: clamp(2.35rem, 5.6vw, 4.75rem);
  --t-h2:      clamp(1.9rem, 4.4vw, 3.5rem);
  --t-h3:      clamp(1.25rem, 1.9vw, 1.6rem);
  --t-lead:    clamp(1.0625rem, 1.35vw, 1.3125rem);
  --t-body:    1.0625rem;
  --t-small:   .875rem;
  --t-micro:   .75rem;

  --nav-h: 56px;
  --pad: clamp(20px, 5vw, 48px);
  --sec: clamp(72px, 9.5vw, 148px);
  --maxw: 1120px;
  --maxw-wide: 1340px;

  --r-xs: 10px; --r-sm: 14px; --r-md: 20px; --r-lg: 28px; --r-xl: 40px; --r-pill: 999px;

  --ease: cubic-bezier(.22, .61, .36, 1);
  --ease-out: cubic-bezier(.16, 1, .3, 1);

  --z-engine: 0; --z-sticky: 40; --z-nav: 60; --z-grain: 90;
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --paper:      #0C0C0E;
    --paper-2:    #151518;
    --paper-3:    #1D1D21;
    --ink:        #F5F5F7;
    --ink-2:      #A6A6AC;
    --ink-3:      #8A8A90;
    --line:       rgba(255, 255, 255, .11);
    --line-soft:  rgba(255, 255, 255, .07);
    --line-hard:  rgba(255, 255, 255, .22);
    --accent:      #7C9CFF;
    --accent-ink:  #A8BEFF;
    --accent-soft: rgba(124, 156, 255, .12);
    --accent-line: rgba(124, 156, 255, .28);
    --accent-rgb:  124, 156, 255;
    --nav-bg:     rgba(12, 12, 14, .72);
    --panel-bg:   rgba(255, 255, 255, .045);
    --field-bg:   rgba(255, 255, 255, .045);
    --shadow-1:   0 1px 2px rgba(0, 0, 0, .5), 0 8px 24px -12px rgba(0, 0, 0, .7);
    --shadow-2:   0 2px 6px rgba(0, 0, 0, .5), 0 28px 64px -28px rgba(0, 0, 0, .8);
  }
}

/* =========================================================================
 * 2. FILM (grain)
 * ========================================================================= */
.grain {
  position: fixed; inset: -100px; z-index: var(--z-grain);
  pointer-events: none;
  opacity: .035;
  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='.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23n)'/%3E%3C/svg%3E");
}
@media (prefers-color-scheme: dark) { .grain { opacity: .05; } }

/* =========================================================================
 * 3. TYPE
 * ========================================================================= */
h1, h2, h3, h4 {
  margin: 0;
  font-weight: 700;
  line-height: 1.06;
  letter-spacing: -.022em;
  overflow-wrap: anywhere;
  min-width: 0;
  text-wrap: balance;
}

p { margin: 0; }

.display {
  font-size: var(--t-display);
  line-height: 1.04;
  letter-spacing: -.028em;
  font-weight: 700;
}
.h2 { font-size: var(--t-h2); line-height: 1.1; }
.h3 { font-size: var(--t-h3); line-height: 1.28; letter-spacing: -.014em; font-weight: 650; }

.lead {
  font-size: var(--t-lead);
  line-height: 1.55;
  color: var(--ink-2);
  letter-spacing: -.005em;
  max-width: 34em;
}
.body-muted { color: var(--ink-2); }

.label {
  font-size: var(--t-micro);
  font-weight: 600;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--accent);
}
.mono { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }
.num  { font-variant-numeric: tabular-nums; font-feature-settings: "tnum" 1; }

.hairline { height: 1px; background: var(--line); border: 0; margin: 0; }

/* =========================================================================
 * 4. LAYOUT
 * ========================================================================= */
.wrap { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--pad); }
.wrap-wide { width: 100%; max-width: var(--maxw-wide); margin-inline: auto; padding-inline: var(--pad); }

:where([id]) { scroll-margin-top: calc(var(--nav-h) + 28px); }

main { position: relative; z-index: 5; }
section { position: relative; }

.sec { padding-block: var(--sec); }
.sec-tight { padding-block: clamp(56px, 6vw, 96px); }

.stack-sm > * + * { margin-top: 12px; }
.stack-md > * + * { margin-top: 20px; }
.stack-lg > * + * { margin-top: 32px; }

/* =========================================================================
 * 5. NAV
 * ========================================================================= */
.nav {
  position: sticky; top: 0; z-index: var(--z-nav);
  height: var(--nav-h);
  background: var(--nav-bg);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--line-soft);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  height: 100%;
}
.brand {
  display: inline-flex; align-items: center; gap: 10px;
  min-height: 44px; padding-right: 8px;
  font-weight: 650; letter-spacing: -.015em;
}
.brand-mark { width: 22px; height: 22px; flex: none; }
.brand-name { font-size: 1rem; }
.brand-latin {
  font-family: var(--font-mono); font-size: .625rem; letter-spacing: .22em;
  color: var(--ink-3);
}

.nav-links { display: flex; align-items: center; gap: 4px; list-style: none; margin: 0; padding: 0; }
.nav-link {
  display: inline-flex; align-items: center; min-height: 44px;
  padding: 0 14px; border-radius: var(--r-pill);
  font-size: var(--t-small); font-weight: 500; color: var(--ink-2);
  transition: color .18s var(--ease), background-color .18s var(--ease);
}
.nav-link:hover { color: var(--ink); background: var(--field-bg); }
.nav-link[aria-current="page"] { color: var(--ink); font-weight: 600; }

.nav-right { display: flex; align-items: center; gap: 8px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 44px; padding: 0 20px;
  border: 1px solid transparent; border-radius: var(--r-pill);
  font-size: var(--t-small); font-weight: 600; letter-spacing: -.005em;
  white-space: nowrap; cursor: pointer;
  transition: background-color .18s var(--ease), color .18s var(--ease),
              border-color .18s var(--ease), transform .18s var(--ease);
}
.btn:active { transform: scale(.975); }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-ink); }
.btn-ghost { border-color: var(--line-hard); color: var(--ink); }
.btn-ghost:hover { background: var(--field-bg); border-color: var(--ink-3); }
.btn-lg { min-height: 52px; padding: 0 28px; font-size: 1rem; }

.nav-toggle {
  display: none; width: 44px; height: 44px; padding: 0;
  align-items: center; justify-content: center; flex-direction: column;
  background: none; border: 1px solid var(--line); border-radius: var(--r-pill);
  cursor: pointer;
}
.nav-toggle span { display: block; width: 16px; height: 1.5px; background: var(--ink); transition: transform .22s var(--ease), opacity .22s var(--ease); }
.nav-toggle span + span { margin-top: 4px; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(5.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-5.5px) rotate(-45deg); }

.nav-sheet {
  position: absolute; left: 0; right: 0; top: 100%;
  background: var(--nav-bg);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--line-soft);
  display: grid; gap: 2px; padding: 8px var(--pad) 20px;
}
.nav-sheet[hidden] { display: none; }
.nav-sheet a {
  display: flex; align-items: center; min-height: 48px;
  font-size: 1.0625rem; font-weight: 500; color: var(--ink);
}

/* 滚动到深色区块时，导航自己切成深色玻璃 */
.nav { transition: background-color .35s var(--ease), border-color .35s var(--ease); }
.nav.nav-over-dark {
  --paper:      #0B0B0D;
  --ink:        #F5F5F7;
  --ink-2:      #A6A6AC;
  --ink-3:      #8A8A90;
  --line:       rgba(255, 255, 255, .12);
  --line-soft:  rgba(255, 255, 255, .09);
  --line-hard:  rgba(255, 255, 255, .24);
  --accent:     #8AA6FF;
  --accent-ink: #B4C6FF;
  --accent-soft: rgba(138, 166, 255, .14);
  --accent-line: rgba(138, 166, 255, .3);
  --accent-rgb: 138, 166, 255;
  --field-bg:   rgba(255, 255, 255, .07);
  --nav-bg:     rgba(11, 11, 13, .72);
}

/* =========================================================================
 * 6. HERO
 * ========================================================================= */
.hero {
  position: relative;
  min-height: min(88dvh, 820px);
  display: flex; align-items: center;
  padding-top: calc(var(--nav-h) + clamp(36px, 7vh, 84px));
  padding-bottom: clamp(48px, 8vh, 96px);
  overflow: clip;
}
.hero-grid {
  display: grid; grid-template-columns: minmax(0, 1fr);
  gap: clamp(40px, 6vw, 72px);
  align-items: center;
}
.hero-copy { position: relative; z-index: 2; max-width: 44rem; }
.hero .display { margin-top: 18px; }
.hero-lead { margin-top: 22px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }

.hero-visual {
  position: relative; z-index: var(--z-engine);
  display: none;
  place-items: center;
}
/* 首屏底图：把工作台的工业网格垫在截图后面，主体仍然是那张真实界面 */
.hero-visual::before {
  content: "";
  position: absolute; inset: -10% -12%;
  background:
    repeating-linear-gradient(90deg, rgba(var(--accent-rgb), .05) 0 1px, transparent 1px 54px),
    repeating-linear-gradient(0deg, rgba(var(--accent-rgb), .05) 0 1px, transparent 1px 54px);
  -webkit-mask-image: radial-gradient(62% 56% at 52% 48%, #000 18%, transparent 76%);
  mask-image: radial-gradient(62% 56% at 52% 48%, #000 18%, transparent 76%);
  z-index: -1;
}
.stage {
  position: relative;
  width: min(100%, 680px);
  perspective: 1700px;
  perspective-origin: 56% 44%;
}
.stack {
  position: relative;
  transform-style: preserve-3d;
  transform: rotateX(var(--rx, 8deg)) rotateY(var(--ry, -13deg));
  transition: transform 1.1s var(--ease-out);
}

/* 主体：工具箱的真实界面，装在一个圆角窗口里 */
.shot-main {
  position: relative;
  margin: 0;
  border-radius: var(--r-sm);
  overflow: clip;
  background: var(--paper-2);
  box-shadow:
    0 1px 2px rgba(11, 18, 48, .1),
    0 22px 46px -26px rgba(11, 18, 48, .42),
    0 80px 130px -80px rgba(11, 18, 48, .5);
}
.shot-main img { width: 100%; height: auto; }
.shot-main::after {
  content: "";
  position: absolute; inset: 0;
  border-radius: inherit;
  box-shadow: inset 0 0 0 1px var(--line-hard);
  pointer-events: none;
}

/* 后面两层玻璃片：说明工具箱里还有别的页面，同时延续玻璃语言 */
.pane {
  position: absolute;
  border-radius: var(--r-sm);
  border: 1px solid var(--accent-line);
  background:
    repeating-linear-gradient(90deg, rgba(var(--accent-rgb), .07) 0 1px, transparent 1px 40px),
    repeating-linear-gradient(0deg, rgba(var(--accent-rgb), .07) 0 1px, transparent 1px 40px),
    linear-gradient(155deg, rgba(255, 255, 255, .8), rgba(255, 255, 255, .34));
  backdrop-filter: blur(14px) saturate(150%);
  -webkit-backdrop-filter: blur(14px) saturate(150%);
}

@media (prefers-color-scheme: dark) {
  .pane {
    background:
      repeating-linear-gradient(90deg, rgba(var(--accent-rgb), .13) 0 1px, transparent 1px 40px),
      repeating-linear-gradient(0deg, rgba(var(--accent-rgb), .13) 0 1px, transparent 1px 40px),
      linear-gradient(155deg, rgba(255, 255, 255, .08), rgba(255, 255, 255, .025));
  }
  .shot-main {
    box-shadow:
      0 1px 2px rgba(0, 0, 0, .6),
      0 22px 46px -26px rgba(0, 0, 0, .85),
      0 80px 130px -80px rgba(0, 0, 0, .95);
  }
}

.pane-1 { inset: -4% -3% 14% 6%; }
.pane-2 { inset: 12% 4% -5% -3%; }

/* 入场：只在脚本可用时先把画面藏起来，脚本被挡住也能直接看到截图 */
@media (scripting: enabled) {
  .shot-main, .pane { transition: opacity .9s var(--ease-out), transform 1.1s var(--ease-out); }
  .shot-main { opacity: 0; transform: translateY(26px) scale(.975); }
  .pane-1 { opacity: 0; transform: translateZ(-80px) scale(.985); }
  .pane-2 { opacity: 0; transform: translateZ(-170px) scale(.96); }
}
:root[data-ready="true"] .shot-main { opacity: 1; transform: none; }
:root[data-ready="true"] .pane-1 { opacity: .9; transform: translateZ(-80px); }
:root[data-ready="true"] .pane-2 { opacity: .55; transform: translateZ(-170px); }

/* =========================================================================
 * 7. FACT BAND
 * ========================================================================= */
.band { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.facts {
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
}
.fact { background: var(--paper); padding: clamp(20px, 3vw, 32px) clamp(16px, 2vw, 24px); }
.fact-k { font-size: var(--t-micro); letter-spacing: .1em; text-transform: uppercase; color: var(--ink-3); font-weight: 600; }
.fact-v { margin-top: 10px; font-size: clamp(1.05rem, 1.7vw, 1.375rem); font-weight: 600; letter-spacing: -.015em; text-wrap: balance; }

/* =========================================================================
 * 8. PANEL (机型识别表 / 产品演示容器)
 * ========================================================================= */
.split {
  display: grid; grid-template-columns: minmax(0, 1fr);
  gap: clamp(32px, 5vw, 64px);
  align-items: start;
}

.demo {
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--panel-bg);
  box-shadow: var(--shadow-2);
  overflow: hidden;
}
.demo-head {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line-soft);
}
.demo-title { display: flex; align-items: center; gap: 10px; font-size: var(--t-small); font-weight: 600; letter-spacing: -.01em; }
.pill {
  display: inline-flex; align-items: center; gap: 6px;
  height: 22px; padding: 0 9px; border-radius: var(--r-pill);
  background: var(--accent-soft); color: var(--accent-ink);
  font-size: .6875rem; font-weight: 650; letter-spacing: .01em;
  border: 1px solid var(--accent-line);
}
.pill-live::before { content: ""; width: 5px; height: 5px; border-radius: 50%; background: currentColor; }

.field { display: grid; gap: 8px; }
.field + .field { margin-top: 16px; }
.field-label { font-size: var(--t-small); font-weight: 600; letter-spacing: -.005em; }
.field-hint { font-size: var(--t-micro); color: var(--ink-3); }

textarea.input, input.input {
  width: 100%; min-width: 0;
  padding: 12px 14px;
  border: 1px solid var(--line); border-radius: var(--r-sm);
  background: var(--field-bg); color: var(--ink);
  font-size: var(--t-small); line-height: 1.6;
  transition: border-color .16s var(--ease), background-color .16s var(--ease);
}
textarea.input { min-height: 104px; resize: vertical; font-family: var(--font-mono); }
input.input { min-height: 44px; }
.input:hover { border-color: var(--line-hard); }
.input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.input::placeholder { color: var(--ink-3); }

.row { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-top: 16px; }
.btn-sm { min-height: 40px; padding: 0 16px; font-size: var(--t-small); }

.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(92px, 1fr)); gap: 1px; background: var(--line-soft); border: 1px solid var(--line-soft); border-radius: var(--r-sm); overflow: hidden; margin-top: 16px; }
.stat { background: var(--panel-bg); padding: 12px 14px; }
.stat-v { font-size: 1.25rem; font-weight: 650; letter-spacing: -.02em; font-variant-numeric: tabular-nums; }
.stat-k { margin-top: 2px; font-size: var(--t-micro); color: var(--ink-3); }

/* 机型识别表：左列表 + 右详情 */
.matrix { display: grid; grid-template-columns: minmax(0, 1fr); }
.matrix-list { padding: 16px; border-bottom: 1px solid var(--line-soft); }
.matrix-detail { padding: 18px; }

.brand-list {
  list-style: none; margin: 12px 0 0; padding: 0;
  display: grid; gap: 2px;
  max-height: 268px; overflow-y: auto;
  overscroll-behavior: contain;
}
.brand-item {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  width: 100%; min-height: 44px; padding: 0 12px;
  border: 1px solid transparent; border-radius: var(--r-xs);
  background: none; color: var(--ink-2); text-align: left; cursor: pointer;
  transition: background-color .16s var(--ease), color .16s var(--ease), border-color .16s var(--ease);
}
.brand-item:hover { background: var(--field-bg); color: var(--ink); }
.brand-item[aria-pressed="true"] { background: var(--accent-soft); border-color: var(--accent-line); color: var(--ink); }
.brand-item-empty { cursor: default; color: var(--ink-3); justify-content: flex-start; }
.brand-n { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: var(--t-small); font-weight: 550; }
.brand-e { flex: none; font-family: var(--font-mono); font-size: .625rem; letter-spacing: .14em; color: var(--ink-3); white-space: nowrap; }
.brand-item[aria-pressed="true"] .brand-e { color: var(--accent-ink); }

.detail-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; }
.detail-head .card-name { font-size: clamp(1.25rem, 2vw, 1.5rem); }

.spec { margin: 18px 0 0; border-top: 1px solid var(--line-soft); }
.spec > div {
  display: grid; grid-template-columns: 5rem minmax(0, 1fr); gap: 14px;
  padding: 12px 0; border-bottom: 1px solid var(--line-soft);
}
.spec dt { font-size: var(--t-micro); font-weight: 600; color: var(--ink-3); letter-spacing: .02em; }
.spec dd { margin: 0; font-size: var(--t-small); line-height: 1.65; color: var(--ink); }

@media (min-width: 720px) {
  .matrix { grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); }
  .matrix-list { border-bottom: 0; border-right: 1px solid var(--line-soft); }
}

/* =========================================================================
 * 9. PRODUCTS
 * ========================================================================= */
.asym { display: grid; grid-template-columns: minmax(0, 1fr); gap: 16px; }

.card {
  position: relative; display: flex; flex-direction: column;
  padding: clamp(24px, 3vw, 36px);
  border: 1px solid var(--line); border-radius: var(--r-lg);
  background: var(--paper-2);
  transition: border-color .22s var(--ease);
}
.card:hover { border-color: var(--line-hard); }

.card-lead {
  background:
    radial-gradient(120% 100% at 100% 0%, var(--accent-soft), transparent 62%),
    var(--paper-2);
  border-color: var(--accent-line);
  justify-content: space-between;
  min-height: 330px;
}
.card-lead:hover { border-color: var(--accent); }

.card-quiet {
  background-image: repeating-linear-gradient(135deg, var(--line-soft) 0 1px, transparent 1px 14px);
  background-color: var(--paper);
}

.card-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; }
.card-name { font-size: clamp(1.5rem, 2.6vw, 2rem); font-weight: 650; letter-spacing: -.02em; }
.card-latin { font-family: var(--font-mono); font-size: .625rem; letter-spacing: .2em; color: var(--ink-3); margin-top: 6px; }
.card-summary { margin-top: 14px; color: var(--ink-2); font-size: var(--t-body); max-width: 32em; }
.card-foot { margin-top: 24px; display: flex; flex-wrap: wrap; gap: 8px 16px; align-items: center; }

.tag {
  display: inline-flex; align-items: center; height: 26px; padding: 0 10px;
  border: 1px solid var(--line); border-radius: var(--r-pill);
  font-size: .6875rem; font-weight: 600; color: var(--ink-2);
}
.status { display: inline-flex; align-items: center; gap: 7px; font-size: var(--t-micro); font-weight: 650; letter-spacing: .02em; color: var(--ink-2); white-space: nowrap; }
.status::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--ink-3); flex: none; }
.status[data-status="live"] { color: var(--accent-ink); }
.status[data-status="live"]::before { background: var(--accent); }
.status[data-status="building"]::before { background: var(--ink-2); }

.more-link {
  display: inline-flex; align-items: center; gap: 6px;
  min-height: 44px; font-size: var(--t-small); font-weight: 600; color: var(--accent-ink);
}
.more-link svg { transition: transform .2s var(--ease); }
.more-link:hover svg { transform: translateX(3px); }

.sec-head { display: grid; gap: 16px; margin-bottom: clamp(28px, 4vw, 52px); }

/* =========================================================================
 * 10. DARK BAND (deliberate single inversion)
 * ========================================================================= */
.band-dark {
  --paper:      #0B0B0D;
  --paper-2:    #141417;
  --ink:        #F5F5F7;
  --ink-2:      #A6A6AC;
  --ink-3:      #8A8A90;
  --line:       rgba(255, 255, 255, .12);
  --line-soft:  rgba(255, 255, 255, .07);
  --line-hard:  rgba(255, 255, 255, .24);
  --accent:     #8AA6FF;
  --accent-ink: #B4C6FF;
  --accent-soft: rgba(138, 166, 255, .14);
  --accent-line: rgba(138, 166, 255, .3);
  --accent-rgb: 138, 166, 255;
  --panel-bg:   rgba(255, 255, 255, .05);
  --field-bg:   rgba(255, 255, 255, .05);
  --nav-bg:     rgba(11, 11, 13, .7);
  background: var(--paper);
  color: var(--ink);
}
.band-dark::before {
  content: ""; position: absolute; inset: 0; z-index: 0; pointer-events: none;
  background: radial-gradient(90% 70% at 50% 0%, rgba(255, 255, 255, .07), transparent 70%);
}
.band-dark > * { position: relative; z-index: 1; }

.statement { font-size: clamp(1.75rem, 4.4vw, 3.5rem); line-height: 1.18; letter-spacing: -.024em; font-weight: 650; max-width: 20em; }

/* =========================================================================
 * 11. CTA + FOOTER
 * ========================================================================= */
.cta { text-align: center; display: grid; justify-items: center; gap: 24px; }
.cta .display { font-size: clamp(2.125rem, 5.6vw, 4.75rem); }
.cta-actions { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }

.footer { border-top: 1px solid var(--line); padding-block: clamp(40px, 5vw, 64px); }
.footer-grid { display: flex; flex-wrap: wrap; gap: 24px; justify-content: space-between; align-items: flex-start; }
.footer-links { display: flex; flex-wrap: wrap; gap: 0 20px; list-style: none; margin: 0; padding: 0; }
.footer-links a { display: inline-flex; align-items: center; min-height: 44px; font-size: var(--t-small); color: var(--ink-2); }
.footer-links a:hover { color: var(--ink); }
.footer-note { font-size: var(--t-small); color: var(--ink-3); line-height: 1.7; max-width: 30em; }

/* =========================================================================
 * 12. SUB PAGES
 * ========================================================================= */
.page-head {
  padding-top: calc(var(--nav-h) + clamp(56px, 9vw, 112px));
  padding-bottom: clamp(28px, 4vw, 48px);
}
.page-head .display { font-size: clamp(2.125rem, 5.6vw, 4.25rem); }

.prose { max-width: 40rem; }
.prose h2 { font-size: clamp(1.25rem, 2.2vw, 1.5rem); margin-top: 40px; letter-spacing: -.015em; }
.prose p { margin-top: 14px; color: var(--ink-2); }
.prose ul { margin: 14px 0 0; padding-left: 1.15em; color: var(--ink-2); }
.prose li + li { margin-top: 8px; }
.prose a { color: var(--accent-ink); text-decoration: underline; text-underline-offset: 3px; }

.rows { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.row-item {
  display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 12px 24px;
  align-items: center;
  padding: 22px 0; border-bottom: 1px solid var(--line);
}
.row-main { min-width: 0; }
.row-side { display: flex; align-items: center; gap: 16px; }
.row-main .body-muted { margin-top: 6px; font-size: .9375rem; }
.step-n { font-family: var(--font-mono); font-size: var(--t-micro); letter-spacing: .14em; color: var(--accent); margin-bottom: 8px; }

/* -------------------------------------------------------------------------
 * 产品页：工作室就一件产品，所以不摆成一行字，给一张带真实界面图的卡片。
 * 下面再留一个虚线空位，把"还有下一件"说清楚，页面才不显得空。
 * ----------------------------------------------------------------------- */
.plist { display: grid; gap: 20px; }

.pcard {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  gap: clamp(20px, 3vw, 40px);
  align-items: center;
  padding: clamp(20px, 2.4vw, 30px);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--paper-2);
  transition: border-color .22s var(--ease);
}
.pcard:hover { border-color: var(--line-hard); }

.pcard-shot {
  display: block;
  border-radius: var(--r-sm);
  overflow: clip;
  box-shadow: var(--shadow-1);
}
.pcard-shot img { display: block; width: 100%; height: auto; }

.pcard-body { display: grid; gap: 14px; align-content: start; }
.pcard-body .body-muted { max-width: 34em; }
.pcard-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; }
.pcard-kicker { font-family: var(--font-mono); font-size: var(--t-micro); letter-spacing: .14em; color: var(--accent); }
.pcard-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 4px; }
.pcard .card-foot { margin-top: 4px; }

/* 空位：虚线框，留的是还没做出来的那件产品 */
.pcard-next { margin-top: 20px; background: var(--paper); }
.pcard-empty {
  display: grid; place-items: center; gap: 10px;
  aspect-ratio: 3 / 2;
  border: 1px dashed var(--line-hard);
  border-radius: var(--r-sm);
  box-shadow: none;
  background-image: repeating-linear-gradient(135deg, var(--line-soft) 0 1px, transparent 1px 14px);
  color: var(--ink-3);
}
.pcard-empty img { width: 30px; height: 30px; opacity: .3; }
.pcard-empty span { font-family: var(--font-mono); font-size: var(--t-micro); letter-spacing: .18em; }

@media (max-width: 860px) {
  .pcard { grid-template-columns: minmax(0, 1fr); }
  .pcard-empty { aspect-ratio: 16 / 7; }
}

/* =========================================================================
 * 12b. SHOTS (产品界面截图)
 * ========================================================================= */
/* -------------------------------------------------------------------------
 * 玻璃舞台：一扇真的在跑的窗口，停在官网自己的这张底上。
 * 窗口里的模糊不是预渲染的图片，是 backdrop-filter 现场采样它正后方的那一片，
 * 采到的坐标就是这一页的坐标：窗口转到哪，玻璃里就是那一片被糊过的页面。
 * 这里有个前提：糊会吃掉高频细节。细网格糊完什么都不剩，玻璃就退化成一块
 * 半透明板子，看着像给窗口贴了一张背景图。所以桌面要放大块的、够粗的东西，
 * 就是下面那两行大字，糊开之后字的形状还在，一眼能看出糊的是这一页。
 * 模糊半径由 JS 按窗口宽度换算（见 site-data.js 里的 GLASS_SCENE.blurRatio）。
 * ----------------------------------------------------------------------- */
.gs-stage {
  position: relative;
  height: clamp(440px, 64vw, 900px);
  overflow: clip;
  background: #F3F7FE;
  perspective: 2200px;
  perspective-origin: 50% 48%;
  touch-action: pan-y;
  -webkit-tap-highlight-color: transparent;
}
/* 桌面：舞台背后那几张底，默认铺官网自己的，另外两张换壁纸图片。
   每张底都要放大块的、够粗的东西：大字和球糊开之后形状还在，
   细星点糊完什么都不剩。粗的东西负责让位置看得出来，细节负责在窗口边缘
   露一次"糊"的差别，两样一起才看得出玻璃采的是它背后的位置，而不是贴了张图。 */
.gs-desk {
  position: absolute; inset: 0;
  display: grid; place-content: center;
  gap: clamp(10px, 1.5vw, 20px);
  text-align: center;
  background:
    radial-gradient(64% 78% at 15% 4%, rgba(37, 87, 232, .26) 0%, rgba(37, 87, 232, .09) 40%, rgba(247, 250, 255, 0) 72%),
    radial-gradient(52% 62% at 96% 94%, rgba(108, 94, 255, .22) 0%, rgba(108, 94, 255, .06) 42%, rgba(247, 250, 255, 0) 72%),
    radial-gradient(38% 44% at 86% 12%, rgba(56, 148, 255, .18) 0%, rgba(247, 250, 255, 0) 70%),
    repeating-linear-gradient(90deg, rgba(12, 24, 64, .11) 0 1px, transparent 1px 48px),
    repeating-linear-gradient(0deg, rgba(12, 24, 64, .11) 0 1px, transparent 1px 48px),
    linear-gradient(158deg, #F8FBFF 0%, #E7EFFC 50%, #ECE8FA 100%);
}
/* 两张桌面底图是真实图片，不是 CSS 画的色块：壁纸里的球和细星点在 20px 上下的
   模糊里会化成一片，糊过的痕迹才看得出来。 */
.gs-stage[data-desk="cool"] .gs-desk,
.gs-stage[data-desk="warm"] .gs-desk {
  background-repeat: no-repeat;
  background-position: center;
  background-size: cover;
}
.gs-stage[data-desk="cool"] .gs-desk { background-image: url("../img/glass/desk-cool.webp"); }
.gs-stage[data-desk="warm"] .gs-desk { background-image: url("../img/glass/desk-warm.webp"); }
@media (prefers-color-scheme: dark) {
  .gs-stage { background: #101116; }
  .gs-desk {
    background:
      radial-gradient(64% 78% at 15% 4%, rgba(96, 136, 255, .30) 0%, rgba(96, 136, 255, .10) 40%, rgba(16, 17, 22, 0) 72%),
      radial-gradient(52% 62% at 96% 94%, rgba(150, 132, 255, .24) 0%, rgba(150, 132, 255, .07) 42%, rgba(16, 17, 22, 0) 72%),
      repeating-linear-gradient(90deg, rgba(255, 255, 255, .09) 0 1px, transparent 1px 48px),
      repeating-linear-gradient(0deg, rgba(255, 255, 255, .09) 0 1px, transparent 1px 48px),
      linear-gradient(158deg, #16171D 0%, #12131A 52%, #171522 100%);
  }
  .gs-stage[data-desk="cool"] .gs-desk { filter: brightness(.62) saturate(1.08); }
  .gs-stage[data-desk="warm"] .gs-desk { filter: brightness(.54) saturate(1.06); }
}
.gs-desk-line {
  display: none;
  margin: 0;
  white-space: nowrap;
  font-weight: 700;
  font-size: clamp(44px, 6.2vw, 92px);
  line-height: 1.06;
  letter-spacing: -.03em;
  color: rgba(12, 24, 64, .22);
}
.gs-stage[data-desk="site"] .gs-desk-line { display: block; }
.gs-desk-line-2 {
  font-family: var(--font-mono);
  font-size: clamp(15px, 1.9vw, 26px);
  font-weight: 600;
  letter-spacing: .3em;
  color: rgba(37, 87, 232, .22);
}
@media (prefers-color-scheme: dark) {
  .gs-desk-line { color: rgba(255, 255, 255, .15); }
  .gs-desk-line-2 { color: rgba(150, 175, 255, .26); }
}

/* 换桌面：这一条本身也是真毛玻璃，压在舞台上 */
.gs-picker {
  position: absolute; z-index: 3;
  left: 50%; bottom: clamp(14px, 2.2vw, 28px);
  transform: translateX(-50%);
  display: flex; gap: 4px; padding: 5px;
  border-radius: var(--r-pill);
  border: 1px solid var(--line);
  background: var(--panel-bg);
  backdrop-filter: blur(18px) saturate(180%);
  -webkit-backdrop-filter: blur(18px) saturate(180%);
  box-shadow: var(--shadow-1);
}
.gs-chip {
  appearance: none; cursor: pointer;
  display: inline-flex; align-items: center;
  min-height: 42px; padding: 0 18px;
  border: 0; border-radius: var(--r-pill);
  background: transparent; color: var(--ink-2);
  font-family: inherit; font-size: var(--t-small); font-weight: 600;
  white-space: nowrap;
  transition: background .25s var(--ease), color .25s var(--ease);
}
.gs-chip:hover { color: var(--ink); background: var(--field-bg); }
.gs-chip[aria-pressed="true"] { background: var(--ink); color: var(--paper); }

/* 窗口本体：这块就是玻璃，backdrop-filter 采的是它正后方的那一片官网底图 */
.gs-win {
  position: absolute; left: 50%; top: 50%;
  width: min(72%, 1020px);
  aspect-ratio: 1.5;
  border-radius: 12px;
  overflow: clip;
  cursor: grab;
  touch-action: pan-y;
  /* 窗口自己不挪窝、也不往前推，能动的只有倾角 */
  transform:
    translate(-50%, -50%)
    rotateX(var(--gs-rx, 0deg)) rotateY(var(--gs-ry, 0deg));
  backdrop-filter: blur(var(--gs-blur, 24px));
  -webkit-backdrop-filter: blur(var(--gs-blur, 24px));
  /* 转起来的时候影子往反方向错一点、再沉一点，才像一件悬空的东西压着桌面 */
  box-shadow:
    inset 0 0 0 1px rgba(12, 24, 64, .10),
    var(--gs-sx, 0px) calc(1px + var(--gs-sy, 0px)) 2px rgba(12, 24, 64, .14),
    var(--gs-sx, 0px) calc(26px + var(--gs-sy, 0px)) 60px -28px rgba(12, 24, 64, .40);
  will-change: transform;
}
@media (prefers-color-scheme: dark) {
  .gs-win {
    box-shadow:
      inset 0 0 0 1px rgba(255, 255, 255, .13),
      var(--gs-sx, 0px) calc(1px + var(--gs-sy, 0px)) 2px rgba(0, 0, 0, .55),
      var(--gs-sx, 0px) calc(26px + var(--gs-sy, 0px)) 60px -28px rgba(0, 0, 0, .82);
  }
}
.gs-win.is-turning { cursor: grabbing; }
.gs-win:focus-visible { outline: 2px solid var(--accent); outline-offset: 5px; }

/* 界面层：工具箱真实渲染出来的一帧，只有画面本身，不含底色 */
.gs-ui {
  position: absolute; inset: 0;
  display: block; width: 100%; height: 100%;
  pointer-events: none;
  -webkit-user-drag: none; user-select: none;
}
/* 反光只在窗口被转起来时露一点，平时完全看不见 */
.gs-sheen {
  position: absolute; inset: 0;
  pointer-events: none;
  opacity: 0;
  mix-blend-mode: screen;
  background: radial-gradient(46% 56% at var(--gs-lx, 32%) var(--gs-ly, 18%),
              rgba(255, 255, 255, .34), rgba(255, 255, 255, 0) 68%);
  transition: opacity .5s var(--ease-out);
}
.gs-win.is-turning .gs-sheen { opacity: var(--gs-lite, 0); }

/* 提示行：两条说明用中点隔开，窄屏自然换行 */
.gs-hint {
  display: flex; flex-wrap: wrap;
  margin-top: 18px;
  font-family: var(--font-mono);
  font-size: var(--t-micro);
  letter-spacing: .04em;
  color: var(--ink-3);
}
.gs-hint span { display: inline-flex; align-items: center; }
.gs-hint span + span::before { content: "·"; margin: 0 12px; opacity: .6; }

@media (max-width: 767px) {
  .gs-stage { height: clamp(400px, 116vw, 620px); }
  .gs-win { width: 92%; border-radius: 10px; }
}
.shot-grid {
  display: grid; grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 2.4vw, 30px);
  margin-top: clamp(20px, 2.4vw, 30px);
}

/* 截图本身就是按钮：鼠标和键盘都能打开大图 */
.shot-open {
  position: relative;
  display: block; width: 100%;
  padding: 0; border: 0; background: none;
  border-radius: var(--r-sm);
  overflow: clip;
  cursor: zoom-in;
  box-shadow: var(--shadow-2);
  transition: transform .4s var(--ease-out), box-shadow .4s var(--ease-out);
}
.shot-open img { width: 100%; height: auto; }
.shot-open::after {
  content: "";
  position: absolute; inset: 0;
  border-radius: inherit;
  box-shadow: inset 0 0 0 1px var(--line-hard);
  pointer-events: none;
}
.shot-card .shot-open:hover { transform: translateY(-3px); }

.shot-card figcaption {
  margin-top: 14px;
  font-size: var(--t-small); color: var(--ink-3);
}

/* 放大查看 */
.lightbox {
  margin: 0; padding: 0; border: 0; background: transparent;
  width: 100vw; height: 100dvh; max-width: 100vw; max-height: 100dvh;
  overflow: auto;
}
.lightbox[open] { display: grid; place-items: center; padding: clamp(16px, 4vw, 56px); }
.lightbox::backdrop {
  background: rgba(6, 8, 16, .76);
  backdrop-filter: blur(10px) saturate(120%);
  -webkit-backdrop-filter: blur(10px) saturate(120%);
}
.lightbox img {
  width: auto; max-width: 100%; height: auto; max-height: 84dvh;
  border-radius: var(--r-sm);
  background: var(--paper-2);
  box-shadow: 0 40px 100px -44px rgba(0, 0, 0, .85);
}
.lightbox-close {
  position: fixed; top: clamp(12px, 3vw, 28px); right: clamp(12px, 3vw, 28px);
  width: 44px; height: 44px;
  display: grid; place-items: center;
  padding: 0; cursor: pointer;
  border-radius: var(--r-pill);
  border: 1px solid rgba(255, 255, 255, .22);
  background: rgba(26, 26, 30, .66);
  color: #fff;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: background .2s var(--ease);
}
.lightbox-close:hover { background: rgba(48, 48, 54, .82); }

/* =========================================================================
 * 13. MOTION
 * ========================================================================= */
[data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .7s var(--ease-out), transform .8s var(--ease-out);
  transition-delay: var(--d, 0ms);
}
[data-reveal].is-in { opacity: 1; transform: none; }

.split-char { display: inline-block; }
[data-split] { opacity: 0; }
[data-split].is-in { opacity: 1; }
[data-split] .split-char {
  opacity: 0; transform: translateY(.5em);
  transition: opacity .6s var(--ease-out), transform .7s var(--ease-out);
}
[data-split].is-in .split-char { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }
  [data-reveal], [data-split], [data-split] .split-char { opacity: 1; transform: none; }
  .pane, .shot-main { opacity: 1; transform: none; }
}

@media (prefers-reduced-transparency: reduce) {
  .nav, .nav-sheet { background: var(--paper); backdrop-filter: none; -webkit-backdrop-filter: none; }
  .pane { backdrop-filter: none; -webkit-backdrop-filter: none; }
  .lightbox::backdrop, .lightbox-close { backdrop-filter: none; -webkit-backdrop-filter: none; }
}

/* =========================================================================
 * 14. RESPONSIVE
 * ========================================================================= */
@media (min-width: 860px) {
  .hero-grid { grid-template-columns: minmax(0, 1.02fr) minmax(0, .98fr); }
  .hero-visual { display: grid; }
  .shot-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .split { grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr); gap: clamp(40px, 5vw, 80px); align-items: center; }
  .asym { grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr); }
  .asym > .card-lead { grid-row: span 2; }
}

@media (max-width: 859px) {
  .nav-links, .nav-right .btn { display: none; }
  .nav-toggle { display: inline-flex; }
  .facts { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 520px) {
  .facts { grid-template-columns: minmax(0, 1fr); }
  .hero { min-height: 0; }
  .row-item { grid-template-columns: minmax(0, 1fr); }
}

/* =========================================================================
 * 15. DOWNLOAD
 * ========================================================================= */
.dl {
  display: grid; gap: clamp(20px, 3vw, 28px);
  padding: clamp(24px, 3.2vw, 36px);
  border: 1px solid var(--accent-line);
  border-radius: var(--r-lg);
  background:
    radial-gradient(120% 120% at 0% 0%, var(--accent-soft), transparent 62%),
    var(--paper-2);
}
.dl-head { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px; }
.dl-actions { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.dl-note { font-size: var(--t-small); color: var(--ink-2); }

.kv { display: grid; grid-template-columns: repeat(auto-fit, minmax(132px, 1fr)); gap: 1px; background: var(--line-soft); border: 1px solid var(--line-soft); border-radius: var(--r-sm); overflow: hidden; }
.kv > div { background: var(--panel-bg); padding: 12px 14px; }
.kv-v { font-size: 1.0625rem; font-weight: 650; letter-spacing: -.015em; font-variant-numeric: tabular-nums; }
.kv-k { margin-top: 2px; font-size: var(--t-micro); color: var(--ink-3); }

.sha {
  display: block;
  font-family: var(--font-mono); font-size: .75rem; line-height: 1.7;
  color: var(--ink-2); word-break: break-all;
}

.notes { border-left: 2px solid var(--accent-line); padding-left: 16px; }
.notes p { font-size: var(--t-small); color: var(--ink-2); }
.notes p + p { margin-top: 8px; }