/* ==========================================================================
   后头 houto.cn · 一人公司应用展示官网
   ========================================================================== */

/* ----- 设计令牌 ----- */
:root {
  --bg: #0A0A0A;
  --bg-soft: #141414;
  --ink: #F5F5F5;
  --ink-dim: #8A8A8A;
  --ink-faint: #4A4A4A;
  --line: rgba(255,255,255,0.08);

  /* 应用专属色 */
  --xxoo: #4ADE80;   /* 小小世界 · 翠绿 */
  --xzt:  #FBBF24;   /* 小纸条 · 琥珀黄 */
  --huoyan:#EF4444;  /* 火眼 · 朱红 */
  --xmao: #FB7185;   /* 小棉袄 · 珊瑚粉 */

  /* 像素点阵参数（直径统一 8px） */
  --dot-size: 4px;
  --dot-gap: 18px;
  --dot-color: rgba(255,255,255,0.12);
  /* 装饰点点统一尺寸（颜色可不同，但形状大小一致） */
  --dot-deco: 8px;

  /* 字体 */
  --f-pixel: 'Press Start 2P', monospace;
  --f-sans: 'Inter', 'Noto Sans SC', system-ui, sans-serif;
  --f-mono: 'JetBrains Mono', 'Noto Sans SC', monospace;
  --f-soft: 'Quicksand', 'Noto Sans SC', sans-serif;
  --f-hand: 'Caveat', 'Noto Sans SC', cursive;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--f-sans);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

/* 全局像素点阵 Canvas（最底层，固定覆盖） */
#pixelCanvas {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  z-index: 1;
  pointer-events: none;
}

/* ==========================================================================
   顶部导航（像素风）
   ========================================================================== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1rem 2rem;
  background: rgba(10,10,10,0.7);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
  font-family: var(--f-mono);
  font-size: 0.78rem;
}

.nav-logo {
  font-family: var(--f-pixel);
  font-size: 0.7rem;
  color: var(--ink);
  letter-spacing: 0.02em;
  position: relative;
}
.nav-logo::before {
  content: '';
  display: inline-block;
  width: 8px; height: 8px;
  background: var(--ink);
  margin-right: 8px;
  vertical-align: middle;
  border-radius: 1px;
}

.nav-dots {
  display: flex;
  align-items: center;
  gap: 1.2rem;
}
.nav-dot {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--ink-dim);
  font-size: 0.75rem;
  transition: color 0.4s var(--ease);
}
.nav-dot::before {
  content: '';
  width: var(--dot-deco); height: var(--dot-deco);
  background: var(--ink-faint);
  border-radius: 50%;
  transition: all 0.4s var(--ease);
  box-shadow: 0 0 0 0 transparent;
}
.nav-dot:hover { color: var(--ink); }
.nav-dot:hover::before,
.nav-dot.is-active::before {
  background: var(--c, var(--ink));
  box-shadow: 0 0 12px 1px var(--c, var(--ink));
}
.nav-dot.is-active { color: var(--ink); }
.nav-dot-label { letter-spacing: 0.04em; }

.nav-status {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--ink-dim);
  font-size: 0.7rem;
}
.nav-status-dot {
  width: var(--dot-deco); height: var(--dot-deco);
  background: #FBBF24;
  border-radius: 50%;
  animation: blink 2s steps(2) infinite;
}
.nav.is-compact {
  padding: 0.6rem 2rem;
  background: rgba(10,10,10,0.85);
  border-bottom-color: rgba(255,255,255,0.12);
}
.nav.is-compact .nav-logo { font-size: 0.65rem; }
@keyframes blink { 50% { opacity: 0.3; } }

/* ==========================================================================
   Hub 首屏（像素风画布）
   ========================================================================== */
.hub {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 6rem 2rem 4rem;
  overflow: hidden;
}
.hub-grid {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, var(--dot-color) var(--dot-size), transparent var(--dot-size));
  background-size: var(--dot-gap) var(--dot-gap);
  opacity: 0.9;
  z-index: 2;
  mask-image: radial-gradient(ellipse at center, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at center, #000 30%, transparent 75%);
}
.hub-inner {
  position: relative;
  z-index: 3;
  text-align: center;
  max-width: 880px;
  width: 100%;
}
.hub-eyebrow {
  font-family: var(--f-mono);
  font-size: 0.75rem;
  letter-spacing: 0.3em;
  color: var(--ink-dim);
  text-transform: uppercase;
  margin-bottom: 2rem;
  opacity: 0;
  animation: fadeUp 0.8s var(--ease) 0.2s forwards;
}
.hub-title {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}
.hub-title-zh {
  font-family: var(--f-pixel);
  font-size: clamp(3rem, 9vw, 6rem);
  letter-spacing: 0.08em;
  background: linear-gradient(180deg, #fff 0%, #aaa 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1;
  opacity: 0;
  animation: fadeUp 1s var(--ease) 0.4s forwards;
}
.hub-title-en {
  font-family: var(--f-mono);
  font-size: clamp(0.9rem, 2vw, 1.2rem);
  letter-spacing: 0.2em;
  color: var(--ink-dim);
  opacity: 0;
  animation: fadeUp 0.8s var(--ease) 0.7s forwards;
}
.hub-sub {
  font-size: clamp(0.95rem, 1.5vw, 1.1rem);
  color: var(--ink-dim);
  line-height: 1.8;
  margin: 0 auto 3.5rem;
  max-width: 520px;
  opacity: 0;
  animation: fadeUp 0.8s var(--ease) 0.9s forwards;
}

.hub-apps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  max-width: 720px;
  margin: 0 auto;
}
.hub-app {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
  padding: 1.4rem 0.5rem;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.02);
  transition: all 0.4s var(--ease);
  opacity: 0;
  animation: fadeUp 0.6s var(--ease) forwards;
  animation-delay: calc(1.1s + var(--i, 0) * 0.1s);
}
.hub-app:nth-child(1) { --i: 0; }
.hub-app:nth-child(2) { --i: 1; }
.hub-app:nth-child(3) { --i: 2; }
.hub-app:nth-child(4) { --i: 3; }
.hub-app:hover {
  background: rgba(255,255,255,0.05);
  border-color: var(--c);
  transform: translateY(-4px);
  box-shadow: 0 8px 30px -10px var(--c);
}
.hub-app-dot {
  width: var(--dot-deco); height: var(--dot-deco);
  background: var(--c);
  border-radius: 50%;
  box-shadow: 0 0 16px 0 var(--c);
  transition: transform 0.4s var(--ease);
}
.hub-app:hover .hub-app-dot { transform: scale(1.25); }
.hub-app-name {
  font-size: 0.9rem;
  color: var(--ink);
  font-weight: 500;
}
.hub-app-domain {
  font-family: var(--f-mono);
  font-size: 0.65rem;
  color: var(--ink-dim);
  letter-spacing: 0.04em;
}

.hub-scroll-hint {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--f-mono);
  font-size: 0.65rem;
  letter-spacing: 0.3em;
  color: var(--ink-dim);
  z-index: 3;
  opacity: 0;
  animation: fadeUp 0.8s var(--ease) 1.6s forwards;
}
.hub-scroll-arrow {
  font-size: 1rem;
  animation: bob 1.6s ease-in-out infinite;
}
@keyframes bob { 50% { transform: translateY(6px); } }
@keyframes fadeUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }

/* ==========================================================================
   应用区块 · 通用
   ========================================================================== */
.app {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 6rem 2rem 4rem;
  overflow: hidden;
  z-index: 5;
}
.app-ambient {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  overflow: hidden;
}
.app-stage {
  position: relative;
  z-index: 3;
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 4rem;
  align-items: center;
}
.app-stage--reverse .app-snapshot { order: 2; }

.app-meta {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
  max-width: 460px;
}
.app-tag {
  display: inline-block;
  width: fit-content;
  padding: 0.35rem 0.8rem;
  border: 1px solid currentColor;
  font-family: var(--f-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  opacity: 0.8;
}
.app-title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.02em;
}
.app-desc {
  font-size: clamp(1rem, 1.6vw, 1.15rem);
  color: var(--ink-dim);
  line-height: 1.7;
}
.app-link {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  width: fit-content;
  padding: 0.8rem 1.4rem;
  border: 1px solid var(--line);
  font-family: var(--f-mono);
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  transition: all 0.4s var(--ease);
  position: relative;
  overflow: hidden;
}
.app-link::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--c, transparent);
  transform: translateY(100%);
  transition: transform 0.4s var(--ease);
  z-index: -1;
}
.app-link:hover {
  color: #0a0a0a;
  border-color: var(--c);
}
.app-link:hover::before { transform: translateY(0); }
.app-link-arrow { font-size: 1rem; transition: transform 0.4s var(--ease); }
.app-link:hover .app-link-arrow { transform: translate(2px, -2px); }

.app-index {
  position: absolute;
  bottom: 2rem;
  right: 2rem;
  font-family: var(--f-mono);
  font-size: 0.7rem;
  color: var(--ink-faint);
  letter-spacing: 0.2em;
  z-index: 4;
}

/* 进入动画：data-anim="rise" 的元素先隐藏，进入视口时触发 */
[data-anim="rise"] {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}
.app.is-in-view [data-anim="rise"] {
  opacity: 1;
  transform: translateY(0);
}
.app.is-in-view [data-anim="rise"]:nth-child(2) { transition-delay: 0.1s; }
.app.is-in-view [data-anim="rise"]:nth-child(3) { transition-delay: 0.2s; }
.app.is-in-view [data-anim="rise"]:nth-child(4) { transition-delay: 0.3s; }

/* ==========================================================================
   应用区块 · 1：小小世界（翠绿 · 童趣 · 圆润）
   ========================================================================== */
.app--xxoo {
  background:
    radial-gradient(ellipse at 30% 40%, rgba(74,222,128,0.10), transparent 60%),
    radial-gradient(ellipse at 70% 70%, rgba(74,222,128,0.06), transparent 50%),
    var(--bg);
}
.app--xxoo .app-title {
  font-family: var(--f-soft);
  font-weight: 700;
  color: #ECFDF5;
  letter-spacing: 0;
}
.app--xxoo .app-tag { color: var(--xxoo); }
.app--xxoo .app-link { --c: var(--xxoo); }

/* 漂浮的小星球（统一尺寸） */
.floaty {
  position: absolute;
  left: var(--x);
  top: var(--y);
  width: var(--dot-deco);
  height: var(--dot-deco);
  background: var(--xxoo);
  border-radius: 50%;
  box-shadow: 0 0 20px var(--xxoo);
  opacity: 0.7;
  animation: floaty 8s ease-in-out infinite;
  animation-delay: var(--d);
}
@keyframes floaty {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(20px, -30px); }
}

/* ==========================================================================
   应用区块 · 2：小纸条（琥珀黄 · 纸张质感 · 手写）
   ========================================================================== */
.app--xzt {
  background:
    radial-gradient(ellipse at 50% 50%, #1f1a10 0%, #0a0a0a 70%);
}
.app--xzt::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle, rgba(251,191,36,0.06) 1px, transparent 1px);
  background-size: 10px 10px;
  z-index: 1;
}
.app--xzt .app-title {
  font-family: var(--f-hand);
  font-weight: 700;
  color: #FEF3C7;
  font-size: clamp(3rem, 7vw, 5.5rem);
  transform: rotate(-2deg);
}
.app--xzt .app-tag { color: var(--xzt); }
.app--xzt .app-link { --c: var(--xzt); }

.paper-note {
  position: absolute;
  left: var(--x);
  top: var(--y);
  padding: 0.5rem 1rem;
  background: rgba(251,191,36,0.12);
  border: 1px solid rgba(251,191,36,0.3);
  color: #FCD34D;
  font-family: var(--f-hand);
  font-size: 1.2rem;
  transform: rotate(var(--r));
  box-shadow: 0 8px 20px -8px rgba(0,0,0,0.6);
  animation: paperFloat 6s ease-in-out infinite;
  animation-delay: var(--d);
}
@keyframes paperFloat {
  0%, 100% { transform: rotate(var(--r)) translateY(0); }
  50% { transform: rotate(calc(var(--r) + 2deg)) translateY(-12px); }
}

/* ==========================================================================
   应用区块 · 3：火眼（朱红 · 科技 · 扫描线）
   ========================================================================== */
.app--huoyan {
  background: #050505;
  position: relative;
}
.app--huoyan::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(239,68,68,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(239,68,68,0.04) 1px, transparent 1px);
  background-size: 40px 40px;
  z-index: 1;
  mask-image: linear-gradient(180deg, transparent, #000 30%, #000 70%, transparent);
  -webkit-mask-image: linear-gradient(180deg, transparent, #000 30%, #000 70%, transparent);
}
.app--huoyan .app-title {
  font-family: var(--f-mono);
  font-weight: 700;
  color: #FCA5A5;
  letter-spacing: -0.02em;
}
.app--huoyan .app-tag--mono { color: var(--huoyan); }
.app--huoyan .app-link--mono { --c: var(--huoyan); }

.scan-line {
  position: absolute;
  left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--huoyan), transparent);
  box-shadow: 0 0 20px var(--huoyan);
  z-index: 2;
  animation: scan 4s linear infinite;
}
@keyframes scan {
  0% { top: 0; opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { top: 100%; opacity: 0; }
}

.hud {
  position: absolute;
  font-family: var(--f-mono);
  font-size: 0.65rem;
  color: var(--huoyan);
  letter-spacing: 0.2em;
  z-index: 2;
  opacity: 0.7;
  text-shadow: 0 0 8px var(--huoyan);
}
.hud-tl { top: 1.5rem; left: 1.5rem; }
.hud-tr { top: 1.5rem; right: 1.5rem; }
.hud-bl { bottom: 1.5rem; left: 1.5rem; }
.hud-br { bottom: 1.5rem; right: 1.5rem; }
.hud-cross {
  position: absolute;
  top: 50%; left: 50%;
  width: 60px; height: 60px;
  transform: translate(-50%, -50%);
  z-index: 2;
  opacity: 0.4;
}
.hud-cross::before,
.hud-cross::after {
  content: '';
  position: absolute;
  background: var(--huoyan);
}
.hud-cross::before { left: 50%; top: 0; bottom: 0; width: 1px; transform: translateX(-50%); }
.hud-cross::after { top: 50%; left: 0; right: 0; height: 1px; transform: translateY(-50%); }

/* ==========================================================================
   应用区块 · 4：小棉袄（珊瑚粉 · 暖 · 柔软）
   ========================================================================== */
.app--xmao {
  background:
    radial-gradient(ellipse at 30% 30%, rgba(251,113,133,0.10), transparent 60%),
    radial-gradient(ellipse at 70% 70%, rgba(251,113,133,0.06), transparent 50%),
    linear-gradient(180deg, #110a0c 0%, #0a0a0a 100%);
}
.app--xmao .app-title {
  font-family: var(--f-soft);
  font-weight: 700;
  color: #FECDD3;
  letter-spacing: 0;
}
.app--xmao .app-tag { color: var(--xmao); }
.app--xmao .app-link { --c: var(--xmao); }

/* 棉絮球：统一尺寸的小圆点，用光晕保留柔软感 */
.cotton {
  position: absolute;
  left: var(--x);
  top: var(--y);
  width: var(--dot-deco);
  height: var(--dot-deco);
  background: var(--xmao);
  border-radius: 50%;
  box-shadow: 0 0 18px 2px var(--xmao);
  opacity: 0.75;
  animation: cottonFloat 12s ease-in-out infinite;
  animation-delay: var(--d);
}
@keyframes cottonFloat {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(30px, -40px); }
}

/* ==========================================================================
   应用快照（浏览器框架占位）
   ========================================================================== */
.app-snapshot-frame {
  position: relative;
  width: 100%;
  transform: perspective(1200px) rotateY(-8deg) rotateX(2deg);
  transition: transform 0.6s var(--ease);
}
.app-stage--reverse .app-snapshot-frame { transform: perspective(1200px) rotateY(8deg) rotateX(2deg); }
.app-snapshot:hover .app-snapshot-frame { transform: perspective(1200px) rotateY(0) rotateX(0); }

.app-snapshot-browser {
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  box-shadow:
    0 30px 60px -20px rgba(0,0,0,0.8),
    0 0 0 1px rgba(255,255,255,0.04);
}
.browser-bar {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.7rem 1rem;
  background: #1a1a1a;
  border-bottom: 1px solid var(--line);
}
.browser-dot {
  width: var(--dot-deco); height: var(--dot-deco);
  background: #333;
  border-radius: 50%;
}
.browser-url {
  margin-left: 0.6rem;
  font-family: var(--f-mono);
  font-size: 0.7rem;
  color: var(--ink-dim);
  letter-spacing: 0.04em;
}
.browser-body {
  padding: 2rem;
  min-height: 360px;
  position: relative;
  background: #0d0d0d;
}
.browser-body--paper { background: #1a160e; }
.browser-body--dark { background: #050505; }
.browser-body--warm { background: #160d10; }

/* placeholder skeleton */
.ph { background: rgba(255,255,255,0.04); border-radius: 4px; }
.ph-title { width: 50%; height: 24px; margin-bottom: 1.2rem; }
.ph-line { width: 100%; height: 12px; margin-bottom: 0.6rem; }
.ph-line.short { width: 60%; }
.ph-btn { width: 120px; height: 32px; margin-top: 1rem; border-radius: 6px; }
.ph-circle { width: 80px; height: 80px; border-radius: 50%; margin-bottom: 1.2rem; }
.ph-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin-bottom: 1.2rem;
}
.ph-grid span { aspect-ratio: 1; background: rgba(255,255,255,0.04); border-radius: 4px; }
.ph-grid--hud span { background: rgba(239,68,68,0.08); border: 1px solid rgba(239,68,68,0.15); }
.ph-scan {
  width: 100%; height: 80px; margin-bottom: 1.2rem;
  background: linear-gradient(180deg, rgba(239,68,68,0.15), transparent);
  position: relative;
  overflow: hidden;
}
.ph-scan::after {
  content: '';
  position: absolute;
  left: 0; right: 0;
  height: 2px;
  background: var(--huoyan);
  animation: scanBar 2s linear infinite;
}
@keyframes scanBar { 0% { top: 0; } 100% { top: 100%; } }
.paper-sheet {
  position: absolute;
  right: 2rem; bottom: 2rem;
  width: 100px; height: 100px;
  background: rgba(251,191,36,0.15);
  border: 1px dashed rgba(251,191,36,0.3);
  transform: rotate(6deg);
}

/* 快照进入动画 */
.app-snapshot {
  opacity: 0;
  transform: translateY(40px) scale(0.95);
  transition: opacity 0.8s var(--ease) 0.2s, transform 0.8s var(--ease) 0.2s;
}
.app.is-in-view .app-snapshot {
  opacity: 1;
  transform: translateY(0) scale(1);
}

/* ==========================================================================
   Footer（像素风）
   ========================================================================== */
.footer {
  position: relative;
  padding: 4rem 2rem 2rem;
  border-top: 1px solid var(--line);
  background: #060606;
  overflow: hidden;
}
.footer-grid {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, var(--dot-color) var(--dot-size), transparent var(--dot-size));
  background-size: var(--dot-gap) var(--dot-gap);
  opacity: 0.6;
  z-index: 1;
  mask-image: linear-gradient(180deg, #000, transparent 90%);
  -webkit-mask-image: linear-gradient(180deg, #000, transparent 90%);
}
.footer-inner {
  position: relative;
  z-index: 2;
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}
.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}
.footer-logo {
  font-family: var(--f-pixel);
  font-size: 0.9rem;
  color: var(--ink);
}
.footer-tagline {
  font-family: var(--f-mono);
  font-size: 0.7rem;
  color: var(--ink-dim);
  letter-spacing: 0.1em;
}
.footer-apps {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
}
.footer-apps a {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--f-mono);
  font-size: 0.75rem;
  color: var(--ink-dim);
  transition: color 0.3s var(--ease);
}
.footer-dot {
  width: var(--dot-deco); height: var(--dot-deco);
  background: var(--c);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--c);
}
.footer-apps a:hover { color: var(--ink); }
.footer-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  font-family: var(--f-mono);
  font-size: 0.7rem;
  color: var(--ink-faint);
}
.footer-meta a:hover { color: var(--ink-dim); }

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width: 860px) {
  .nav { padding: 0.8rem 1rem; gap: 0.8rem; }
  .nav-dot-label { display: none; }
  .nav-dot::before { width: 12px; height: 12px; }
  .nav-status { font-size: 0.65rem; }

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

  .app { padding: 5rem 1.2rem 4rem; }
  .app-stage,
  .app-stage--reverse {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .app-stage--reverse .app-snapshot { order: 0; }
  .app-snapshot-frame { transform: none; }
  .app-stage--reverse .app-snapshot-frame { transform: none; }
  .app-meta { max-width: 100%; }

  .footer-apps { gap: 1rem; }
}

/* 减少动效偏好 */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  html { scroll-behavior: auto; }
  [data-anim="rise"] { opacity: 1; transform: none; }
  .app-snapshot { opacity: 1; transform: none; }
}