/* ============================================================
   数字永生 · 另一个你  —  high-tech showcase
   ============================================================ */

:root {
  --bg: #04060d;
  --bg-2: #070c18;
  --ink: #eaf2ff;
  --ink-dim: #a8b8d4;
  --ink-faint: #6f819e;
  --cyan: #5ee7ff;
  --cyan-soft: #9ef7ff;
  --blue: #3b82f6;
  --blue-deep: #1d4ed8;
  --mint: #4ade80;
  --line: rgba(120, 170, 255, 0.14);
  --line-strong: rgba(120, 190, 255, 0.3);
  --glass: rgba(12, 22, 42, 0.5);
  --glass-2: rgba(10, 18, 36, 0.72);
  --shadow: 0 24px 70px -30px rgba(0, 0, 0, 0.95);
  --glow-cyan: 0 0 40px -8px rgba(94, 231, 255, 0.55);
  --glow-blue: 0 0 60px -12px rgba(59, 130, 246, 0.6);
  --r-lg: 22px;
  --r-md: 16px;
  --r-sm: 10px;
  --font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei",
    "Noto Sans SC", "Source Han Sans SC", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "SF Mono", "JetBrains Mono", "Cascadia Mono", ui-monospace, Consolas, monospace;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: 0.01em;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.is-locked { overflow: hidden; }

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; }
ul, ol { list-style: none; margin: 0; padding: 0; }
h1, h2, h3, h4, p { margin: 0; }
strong, b { font-weight: 700; }

::selection { background: rgba(94, 231, 255, 0.28); color: #fff; }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: #05080f; }
::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, rgba(94, 231, 255, 0.5), rgba(59, 130, 246, 0.5));
  border-radius: 20px;
  border: 2px solid #05080f;
}

.shell { width: min(1240px, calc(100% - 48px)); margin-inline: auto; }

.grad {
  background: linear-gradient(100deg, #ffffff 8%, var(--cyan-soft) 38%, var(--cyan) 58%, var(--blue) 96%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
}

/* ============ 背景层 ============ */
.bg-layer {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
  background:
    radial-gradient(1200px 700px at 78% -10%, rgba(24, 62, 130, 0.5), transparent 60%),
    radial-gradient(900px 600px at 8% 20%, rgba(12, 48, 96, 0.42), transparent 62%),
    linear-gradient(180deg, #04060d 0%, #050a14 40%, #04060d 100%);
}

.bg-grid {
  position: absolute;
  inset: -2px;
  background-image:
    linear-gradient(rgba(110, 170, 255, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(110, 170, 255, 0.055) 1px, transparent 1px);
  background-size: 68px 68px;
  mask-image: radial-gradient(circle at 50% 30%, #000 20%, transparent 78%);
  -webkit-mask-image: radial-gradient(circle at 50% 30%, #000 20%, transparent 78%);
  animation: gridDrift 40s linear infinite;
}

@keyframes gridDrift {
  from { transform: translate3d(0, 0, 0); }
  to   { transform: translate3d(-68px, -68px, 0); }
}

.bg-aurora {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.5;
  will-change: transform;
}
.aurora-a {
  width: 60vw; height: 60vw; top: -22vw; right: -14vw;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.55), transparent 65%);
  animation: floatA 26s ease-in-out infinite;
}
.aurora-b {
  width: 48vw; height: 48vw; bottom: -18vw; left: -12vw;
  background: radial-gradient(circle, rgba(34, 211, 238, 0.34), transparent 65%);
  animation: floatB 32s ease-in-out infinite;
}
.aurora-c {
  width: 40vw; height: 40vw; top: 42%; left: 46%;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.3), transparent 68%);
  animation: floatA 38s ease-in-out infinite reverse;
}

@keyframes floatA {
  0%, 100% { transform: translate3d(0, 0, 0) scale(1); }
  50% { transform: translate3d(-4%, 5%, 0) scale(1.08); }
}
@keyframes floatB {
  0%, 100% { transform: translate3d(0, 0, 0) scale(1); }
  50% { transform: translate3d(6%, -4%, 0) scale(1.1); }
}

#field { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0.62; }

.bg-vignette {
  position: absolute; inset: 0;
  background: radial-gradient(circle at 50% 40%, transparent 40%, rgba(2, 4, 10, 0.72) 100%);
}

.bg-scanlines {
  position: absolute; inset: 0;
  background: repeating-linear-gradient(
    180deg, rgba(255, 255, 255, 0.022) 0 1px, transparent 1px 3px);
  mix-blend-mode: overlay;
  opacity: 0.5;
}

/* ============ 光标光晕 ============ */
.cursor-glow {
  position: fixed;
  top: 0; left: 0;
  width: 480px; height: 480px;
  margin: -240px 0 0 -240px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(94, 231, 255, 0.13), rgba(59, 130, 246, 0.06) 45%, transparent 70%);
  pointer-events: none;
  z-index: 1;
  opacity: 0;
  transition: opacity 0.6s ease;
  will-change: transform;
}
.cursor-glow.on { opacity: 1; }

/* ============ 进度条 ============ */
.scroll-progress {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 2px;
  z-index: 90;
  background: rgba(255, 255, 255, 0.05);
}
.scroll-progress span {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--cyan), var(--blue), var(--cyan-soft));
  box-shadow: 0 0 14px rgba(94, 231, 255, 0.85);
}

/* ============ 启动遮罩 ============ */
.boot {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: grid;
  place-items: center;
  background: radial-gradient(circle at 50% 45%, #0a1428, #04060d 70%);
  transition: opacity 0.8s ease, visibility 0.8s ease;
}
.boot.done { opacity: 0; visibility: hidden; }
.boot-inner { display: grid; justify-items: center; gap: 10px; }
.boot-ring {
  width: 84px; height: 84px;
  border-radius: 50%;
  border: 1px solid rgba(94, 231, 255, 0.22);
  border-top-color: var(--cyan);
  border-right-color: rgba(59, 130, 246, 0.8);
  animation: spin 1.1s linear infinite;
  box-shadow: var(--glow-cyan), inset 0 0 22px -8px rgba(94, 231, 255, 0.6);
}
@keyframes spin { to { transform: rotate(360deg); } }
.boot-label {
  margin-top: 18px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.42em;
  color: var(--cyan);
}
.boot-sub { font-size: 13px; color: var(--ink-faint); letter-spacing: 0.14em; }
.boot-bar {
  width: 260px; height: 2px; margin-top: 8px;
  background: rgba(255, 255, 255, 0.08);
  overflow: hidden;
  border-radius: 2px;
}
.boot-bar span {
  display: block; height: 100%; width: 0;
  background: linear-gradient(90deg, var(--cyan), var(--blue));
  box-shadow: 0 0 12px rgba(94, 231, 255, 0.9);
  transition: width 0.25s linear;
}
.boot-pct { font-family: var(--mono); font-size: 11px; color: var(--ink-faint); letter-spacing: 0.2em; }

/* ============ 导航 ============ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 80;
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 14px clamp(16px, 3vw, 40px);
  transition: background 0.45s var(--ease), backdrop-filter 0.45s ease, padding 0.4s var(--ease), border-color 0.4s ease;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  padding-block: 9px;
  background: rgba(5, 9, 18, 0.76);
  backdrop-filter: blur(22px) saturate(150%);
  -webkit-backdrop-filter: blur(22px) saturate(150%);
  border-bottom-color: var(--line);
}

.brand { display: flex; align-items: center; gap: 11px; flex: none; }
.brand-mark { width: 32px; height: 32px; display: grid; place-items: center; }
.brand-mark svg { width: 100%; height: 100%; animation: spin 26s linear infinite; }
.brand-text { display: grid; line-height: 1.15; }
.brand-text b { font-size: 15px; letter-spacing: 0.06em; }
.brand-text i {
  font-style: normal;
  font-size: 10px;
  letter-spacing: 0.3em;
  color: var(--cyan);
  opacity: 0.9;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
  flex-wrap: nowrap;
  overflow: hidden;
}
.nav-links a {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 12px;
  border-radius: 8px;
  font-size: 12.5px;
  color: var(--ink-dim);
  white-space: nowrap;
  transition: color 0.3s ease, background 0.3s ease;
}
.nav-links a em {
  font-style: normal;
  font-family: var(--mono);
  font-size: 10px;
  color: var(--cyan);
  opacity: 0.65;
}
.nav-links a:hover { color: #fff; background: rgba(94, 231, 255, 0.08); }
.nav-links a.active { color: #fff; }
.nav-links a.active::after {
  content: "";
  position: absolute;
  left: 12px; right: 12px; bottom: 2px;
  height: 1px;
  background: linear-gradient(90deg, var(--cyan), transparent);
}

.nav-side { display: flex; align-items: center; gap: 12px; flex: none; }
.nav-live {
  display: inline-flex; align-items: center; gap: 7px;
  font-size: 11px; letter-spacing: 0.14em;
  color: var(--ink-dim);
  padding: 5px 11px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(10, 20, 38, 0.5);
}
.nav-live i {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--mint);
  box-shadow: 0 0 10px var(--mint);
  animation: blink 2s ease-in-out infinite;
}
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0.25; } }

.nav-toggle {
  display: none;
  width: 40px; height: 34px;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: rgba(10, 20, 38, 0.6);
  padding: 0;
  position: relative;
}
.nav-toggle span {
  position: absolute; left: 10px; right: 10px; height: 1.5px;
  background: var(--ink-dim);
  border-radius: 2px;
  transition: transform 0.35s var(--ease), opacity 0.25s ease;
}
.nav-toggle span:nth-child(1) { top: 11px; }
.nav-toggle span:nth-child(2) { top: 16px; }
.nav-toggle span:nth-child(3) { top: 21px; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(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(-5px) rotate(-45deg); }

/* ============ HERO ============ */
.hero {
  position: relative;
  z-index: 2;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding: 120px 0 90px;
  overflow: hidden;
}

.hero-media { position: absolute; inset: 0; z-index: -1; }
.hero-img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: 68% 42%;
  opacity: 0.42;
  filter: saturate(1.1) contrast(1.05);
  transform: scale(1.06);
  animation: heroZoom 24s ease-in-out infinite alternate;
}
@keyframes heroZoom {
  from { transform: scale(1.06) translate3d(0, 0, 0); }
  to   { transform: scale(1.14) translate3d(-1.4%, -1%, 0); }
}
.hero-media-mask {
  position: absolute; inset: 0;
  background:
    linear-gradient(90deg, #04060d 0%, rgba(4, 6, 13, 0.9) 34%, rgba(4, 6, 13, 0.34) 62%, rgba(4, 6, 13, 0.82) 100%),
    linear-gradient(180deg, rgba(4, 6, 13, 0.86) 0%, transparent 28%, transparent 68%, #04060d 100%);
}

.hero-orbit { position: absolute; inset: 0; z-index: -1; pointer-events: none; }
.orbit {
  position: absolute;
  left: 62%; top: 50%;
  border-radius: 50%;
  border: 1px solid rgba(94, 231, 255, 0.16);
  transform: translate(-50%, -50%);
}
.orbit-1 { width: 520px; height: 520px; animation: spin 34s linear infinite; border-style: dashed; }
.orbit-2 { width: 720px; height: 720px; animation: spin 52s linear infinite reverse; }
.orbit-3 { width: 940px; height: 940px; animation: spin 78s linear infinite; border-color: rgba(59, 130, 246, 0.13); }

.hero-shell {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.78fr);
  gap: clamp(28px, 5vw, 72px);
  align-items: center;
  width: min(1320px, calc(100% - 48px));
}

.hero-copy { max-width: 44rem; }

/* 章节之间的深浅交替，制造纵深 */
.section-scene.alt {
  background: linear-gradient(180deg, transparent, rgba(10, 20, 40, 0.4) 22%, rgba(10, 20, 40, 0.4) 78%, transparent);
}

/* 启动期间的轻微压暗，避免闪现未完成布局 */
body.is-loading .section,
body.is-loading .footer { opacity: 0; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.24em;
  color: var(--cyan);
  padding: 7px 14px;
  border: 1px solid rgba(94, 231, 255, 0.26);
  border-radius: 999px;
  background: rgba(8, 22, 40, 0.55);
  backdrop-filter: blur(8px);
}
.eyebrow-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 12px var(--cyan);
  animation: blink 2.4s ease-in-out infinite;
}

.hero-title {
  margin: 22px 0 0;
  font-size: clamp(42px, 7.4vw, 104px);
  /* 中文汉字撑满整个 em 框，行高低于 1.1 时上下行会视觉咬合、看起来「字压字」。
     1.06 → 1.2 留出行间呼吸，同时保持标题的紧凑感。 */
  line-height: 1.2;
  font-weight: 800;
  letter-spacing: -0.02em;
}
.hero-title .line { display: block; }
/* 第一行与第二行之间额外留白，避免大字号的汉字上下贴死 */
.hero-title .line + .line { margin-top: 0.08em; }
.hero-title .line:nth-child(1) {
  text-shadow: 0 0 60px rgba(120, 190, 255, 0.28);
}
.hero-title .line.grad {
  font-size: 0.72em;
  letter-spacing: -0.01em;
  /* 缩小后的行需要略大的行高，否则 0.72em 的字会顶到上一行 */
  line-height: 1.3;
}

.hero-lede {
  margin-top: 26px;
  max-width: 34em;
  font-size: clamp(15px, 1.35vw, 19px);
  color: var(--ink-dim);
  line-height: 1.85;
}
.hero-lede strong { color: var(--cyan-soft); font-weight: 600; }

.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }

/* 按钮 */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 13px 26px;
  border-radius: 999px;
  font-size: 14.5px;
  font-weight: 600;
  letter-spacing: 0.02em;
  border: 1px solid transparent;
  overflow: hidden;
  transition: transform 0.35s var(--ease), box-shadow 0.35s ease, border-color 0.35s ease, background 0.35s ease;
  isolation: isolate;
}
.btn svg { width: 18px; height: 18px; transition: transform 0.35s var(--ease); }
.btn:hover { transform: translateY(-2px); }
.btn:hover svg { transform: translateX(4px); }

.btn-primary {
  color: #04121c;
  background: linear-gradient(100deg, var(--cyan-soft), var(--cyan) 45%, #7dd3fc 70%, var(--blue) 130%);
  box-shadow: 0 10px 34px -12px rgba(94, 231, 255, 0.85), inset 0 0 0 1px rgba(255, 255, 255, 0.28);
}
.btn-primary::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(100deg, transparent 30%, rgba(255, 255, 255, 0.65) 50%, transparent 70%);
  transform: translateX(-130%);
  transition: transform 0.75s var(--ease);
  z-index: -1;
}
.btn-primary:hover::after { transform: translateX(130%); }
.btn-primary:hover { box-shadow: 0 16px 46px -12px rgba(94, 231, 255, 0.95); }

.btn-ghost {
  color: var(--ink);
  border-color: var(--line-strong);
  background: rgba(10, 20, 38, 0.5);
  backdrop-filter: blur(10px);
}
.btn-ghost:hover {
  border-color: rgba(94, 231, 255, 0.6);
  background: rgba(94, 231, 255, 0.09);
  box-shadow: var(--glow-cyan);
}

.btn-small { padding: 10px 20px; font-size: 13.5px; }
.btn-block { width: 100%; margin-top: auto; }

.hero-tags {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-top: 46px;
  max-width: 660px;
}
.hero-tags li {
  padding: 13px 14px;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  background: linear-gradient(160deg, rgba(14, 28, 52, 0.6), rgba(8, 14, 28, 0.4));
  backdrop-filter: blur(8px);
  transition: border-color 0.35s ease, transform 0.35s var(--ease), box-shadow 0.35s ease;
}
.hero-tags li:hover {
  border-color: rgba(94, 231, 255, 0.45);
  transform: translateY(-3px);
  box-shadow: 0 14px 30px -18px rgba(94, 231, 255, 0.8);
}
.hero-tags b { display: block; font-size: 15px; color: #fff; letter-spacing: 0.06em; }
.hero-tags i { font-style: normal; font-size: 11.5px; color: var(--ink-faint); line-height: 1.5; display: block; margin-top: 3px; }

/* Hero 手机 */
.hero-device { position: relative; justify-self: center; width: min(320px, 100%); }
.device-frame {
  position: relative;
  border-radius: 42px;
  padding: 11px;
  background: linear-gradient(160deg, rgba(150, 200, 255, 0.32), rgba(20, 34, 60, 0.9) 40%, rgba(90, 150, 220, 0.22));
  box-shadow: var(--shadow), 0 0 90px -30px rgba(94, 231, 255, 0.6);
  animation: deviceFloat 7s ease-in-out infinite;
}
@keyframes deviceFloat {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-14px) rotate(-0.5deg); }
}
.device-notch {
  position: absolute;
  top: 20px; left: 50%;
  transform: translateX(-50%);
  width: 96px; height: 22px;
  border-radius: 999px;
  background: #04060d;
  z-index: 3;
}
.device-screen {
  position: relative;
  border-radius: 32px;
  overflow: hidden;
  background: linear-gradient(180deg, #0b1220, #070c16);
  height: 560px;
  display: flex;
  flex-direction: column;
}
.device-glow {
  position: absolute;
  inset: -30% -30% -40%;
  background: radial-gradient(circle at 50% 60%, rgba(94, 231, 255, 0.24), transparent 62%);
  filter: blur(40px);
  z-index: -1;
}

/* 微信界面（hero 与场景共用样式） */
.wa-bar {
  display: flex; align-items: center; gap: 10px;
  padding: 30px 14px 10px;
  background: linear-gradient(180deg, #131c2c, #101827);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.wa-back { font-size: 20px; color: var(--cyan); line-height: 1; }
.wa-peer { display: grid; line-height: 1.25; margin-inline: auto; text-align: center; }
.wa-peer b { font-size: 13.5px; }
.wa-peer i {
  font-style: normal; font-size: 10px; color: var(--mint);
  display: inline-flex; align-items: center; gap: 5px; justify-content: center;
}
.wa-pulse {
  width: 5px; height: 5px; border-radius: 50%;
  background: var(--mint); box-shadow: 0 0 8px var(--mint);
  animation: blink 1.8s ease-in-out infinite;
}
.wa-more { color: var(--ink-faint); font-size: 12px; letter-spacing: 1px; }

.wa-body {
  flex: 1;
  padding: 14px 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  overflow: hidden;
  background:
    radial-gradient(600px 200px at 50% 0%, rgba(59, 130, 246, 0.1), transparent 70%),
    #0a111d;
}
.bubble {
  max-width: 82%;
  padding: 9px 13px;
  font-size: 12.5px;
  line-height: 1.62;
  border-radius: 14px;
  opacity: 0;
  transform: translateY(10px) scale(0.97);
  animation: bubbleIn 0.5s var(--ease) forwards;
}
@keyframes bubbleIn {
  to { opacity: 1; transform: translateY(0) scale(1); }
}
.bubble.me {
  align-self: flex-end;
  background: linear-gradient(150deg, #2f7d4f, #1f6b40);
  border-bottom-right-radius: 4px;
  color: #eafff2;
}
.bubble.you {
  align-self: flex-start;
  background: linear-gradient(150deg, #1b2436, #151d2c);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-bottom-left-radius: 4px;
  color: #dfe9fb;
}
.bubble.typing { display: inline-flex; gap: 4px; align-items: center; padding: 13px 15px; }
.bubble.typing i {
  width: 5px; height: 5px; border-radius: 50%;
  background: var(--cyan);
  animation: dotJump 1.3s ease-in-out infinite;
}
.bubble.typing i:nth-child(2) { animation-delay: 0.16s; }
.bubble.typing i:nth-child(3) { animation-delay: 0.32s; }
@keyframes dotJump {
  0%, 60%, 100% { transform: translateY(0); opacity: 0.45; }
  30% { transform: translateY(-4px); opacity: 1; }
}
.bubble.voice {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 13px;
}
.bubble.voice .vwave { display: inline-flex; align-items: flex-end; gap: 2px; height: 14px; }
.bubble.voice .vwave i {
  width: 2px; border-radius: 2px;
  background: var(--cyan-soft);
  animation: vbar 1.05s ease-in-out infinite;
}
.bubble.voice .vwave i:nth-child(1) { height: 5px; animation-delay: 0s; }
.bubble.voice .vwave i:nth-child(2) { height: 11px; animation-delay: 0.1s; }
.bubble.voice .vwave i:nth-child(3) { height: 7px; animation-delay: 0.2s; }
.bubble.voice .vwave i:nth-child(4) { height: 13px; animation-delay: 0.3s; }
.bubble.voice .vwave i:nth-child(5) { height: 6px; animation-delay: 0.4s; }
@keyframes vbar {
  0%, 100% { transform: scaleY(0.45); }
  50% { transform: scaleY(1); }
}
.bubble .vtime { font-size: 10px; color: rgba(224, 240, 255, 0.7); }

.wa-input {
  display: flex; align-items: center; gap: 9px;
  padding: 10px 12px 16px;
  background: #101827;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}
.wa-mic, .wa-plus {
  width: 26px; height: 26px;
  display: grid; place-items: center;
  border-radius: 50%;
  font-size: 12px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--ink-dim);
  flex: none;
}
.wa-placeholder {
  flex: 1;
  font-size: 11.5px;
  color: var(--ink-faint);
  padding: 7px 10px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.05);
  min-height: 30px;
}
.caret {
  display: inline-block;
  width: 1.5px; height: 13px;
  background: var(--cyan);
  vertical-align: -2px;
  margin-left: 1px;
  animation: caretBlink 1s steps(2) infinite;
}
@keyframes caretBlink { 0%, 49% { opacity: 1; } 50%, 100% { opacity: 0; } }

.hero-scroll {
  position: absolute;
  bottom: 26px; left: 50%;
  transform: translateX(-50%);
  display: grid;
  justify-items: center;
  gap: 8px;
  font-size: 10px;
  letter-spacing: 0.34em;
  color: var(--ink-faint);
  z-index: 3;
}
.hero-scroll em { font-style: normal; }
.mouse {
  width: 20px; height: 32px;
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  display: grid;
  justify-items: center;
  padding-top: 6px;
}
.mouse i {
  width: 3px; height: 6px;
  border-radius: 3px;
  background: var(--cyan);
  animation: wheel 1.8s ease-in-out infinite;
}
@keyframes wheel {
  0% { transform: translateY(0); opacity: 0; }
  30% { opacity: 1; }
  100% { transform: translateY(12px); opacity: 0; }
}

/* ============ 通用 section ============ */
.section {
  position: relative;
  z-index: 2;
  padding: clamp(80px, 10vw, 140px) 0;
}
.section + .section { border-top: 1px solid rgba(120, 170, 255, 0.07); }

.sec-head { max-width: 900px; margin-bottom: clamp(36px, 5vw, 64px); }
.sec-head.center { margin-inline: auto; text-align: center; }
.sec-head.tight { margin-bottom: 30px; }

.sec-kicker {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.26em;
  color: var(--ink-faint);
  text-transform: uppercase;
  margin-bottom: 16px;
}
.sec-kicker span { color: var(--cyan); }

.sec-title {
  font-size: clamp(28px, 4.4vw, 54px);
  line-height: 1.18;
  font-weight: 750;
  letter-spacing: -0.015em;
}
.sec-title.small { font-size: clamp(22px, 2.8vw, 34px); }

.sec-sub {
  margin-top: 18px;
  max-width: 60ch;
  color: var(--ink-dim);
  font-size: 15.5px;
}
.sec-head.center .sec-sub { margin-inline: auto; }

/* ============ 00 起点 ============ */
.intro-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
  gap: clamp(28px, 4vw, 60px);
  align-items: start;
}

.intro-lead {
  font-size: clamp(20px, 2.4vw, 30px);
  font-weight: 600;
  color: #fff;
  line-height: 1.55;
}
.intro-sub { margin-top: 10px; font-size: 16px; color: var(--cyan); }
.intro-body {
  margin-top: 22px;
  color: var(--ink-dim);
  font-size: 15.5px;
  max-width: 46em;
}
.intro-body strong { color: var(--cyan-soft); font-weight: 600; }

.stat-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 42px;
  padding-top: 32px;
  border-top: 1px solid var(--line);
}
.stat b {
  display: block;
  font-family: var(--mono);
  font-size: clamp(34px, 4.4vw, 52px);
  line-height: 1;
  font-weight: 700;
  background: linear-gradient(180deg, #fff, var(--cyan) 70%, var(--blue));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.stat b::after { content: "+"; font-size: 0.5em; vertical-align: super; opacity: 0.6; }
.stat span {
  display: block;
  margin-top: 10px;
  font-size: 12.5px;
  color: var(--ink-faint);
  line-height: 1.6;
}

.glass {
  background: linear-gradient(165deg, rgba(16, 30, 56, 0.62), rgba(7, 13, 26, 0.72));
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  box-shadow: var(--shadow);
}

.card-label {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.28em;
  color: var(--cyan);
  opacity: 0.85;
}

.intro-card { padding: 30px 28px; }
.pipe { margin-top: 22px; display: grid; gap: 4px; }
.pipe li {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 4px 12px;
  padding: 14px 0;
  border-bottom: 1px dashed rgba(120, 170, 255, 0.14);
  position: relative;
}
.pipe li:last-child { border-bottom: 0; }
.pipe em {
  grid-row: span 2;
  font-style: normal;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--cyan);
  opacity: 0.7;
  padding-top: 4px;
}
.pipe b { font-size: 15px; color: #fff; letter-spacing: 0.04em; }
.pipe span { font-size: 12.5px; color: var(--ink-faint); line-height: 1.6; }
.card-foot {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  color: var(--ink-faint);
  line-height: 1.7;
}

/* ============ 场景 ============ */
.scene-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  gap: clamp(30px, 5vw, 76px);
  align-items: center;
}
.scene-grid.reverse .scene-copy { order: 2; }
.scene-grid.reverse .scene-stage { order: 1; }

.bullet-list { margin-top: 30px; display: grid; gap: 16px; }
.bullet-list li {
  position: relative;
  padding-left: 26px;
  display: grid;
  gap: 3px;
}
.bullet-list li::before {
  content: "";
  position: absolute;
  left: 0; top: 10px;
  width: 9px; height: 9px;
  border: 1px solid var(--cyan);
  border-radius: 2px;
  transform: rotate(45deg);
  box-shadow: 0 0 12px rgba(94, 231, 255, 0.6);
}
.bullet-list b { font-size: 16.5px; color: #fff; letter-spacing: 0.03em; }
.bullet-list span { font-size: 13.5px; color: var(--ink-dim); }

.scene-tag {
  display: inline-flex;
  margin-top: 32px;
  padding: 10px 18px;
  font-size: 14px;
  color: var(--cyan-soft);
  border-left: 2px solid var(--cyan);
  background: linear-gradient(90deg, rgba(94, 231, 255, 0.11), transparent);
  letter-spacing: 0.04em;
}

.scene-stage { position: relative; display: grid; place-items: center; }
.stage-halo {
  position: absolute;
  inset: -12% -8%;
  background: radial-gradient(circle at 50% 50%, rgba(59, 130, 246, 0.3), transparent 66%);
  filter: blur(52px);
  z-index: -1;
}

/* 手机（场景 01） */
.phone {
  width: min(330px, 100%);
  height: 620px;
  border-radius: 40px;
  padding: 0;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  background: linear-gradient(180deg, #0d1526, #070c16);
  border: 1px solid rgba(150, 200, 255, 0.28);
  box-shadow: var(--shadow), 0 0 100px -34px rgba(94, 231, 255, 0.75), inset 0 0 0 6px rgba(6, 12, 24, 0.94);
  animation: deviceFloat 8s ease-in-out infinite;
}
.phone-top {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 22px 4px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-dim);
}
.phone-status { display: inline-flex; align-items: center; gap: 3px; }
.phone-status i {
  width: 12px; height: 7px;
  border-radius: 2px;
  background: rgba(255, 255, 255, 0.28);
}
.phone-status i.b { background: var(--mint); }
.phone-head {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 16px 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  background: linear-gradient(180deg, #131d2e, #101827);
}
.phone-head > div { margin-inline: auto; display: grid; text-align: center; line-height: 1.25; }
.phone-head b { font-size: 14px; }
.phone-head i {
  font-style: normal; font-size: 10px; color: var(--mint);
  display: inline-flex; align-items: center; gap: 5px; justify-content: center;
}
.ph-back { font-size: 21px; color: var(--cyan); }
.ph-more { font-size: 12px; color: var(--ink-faint); letter-spacing: 1px; }
.phone-body {
  flex: 1;
  padding: 16px 14px;
  display: flex;
  flex-direction: column;
  gap: 11px;
  overflow: hidden;
  background:
    radial-gradient(500px 180px at 70% 0%, rgba(59, 130, 246, 0.12), transparent 70%),
    #0a111d;
}
.phone-body .bubble { font-size: 13px; }
.phone-input {
  display: flex; align-items: center; gap: 10px;
  padding: 12px 14px 20px;
  background: #101827;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}
.mic-btn, .plus-btn {
  width: 32px; height: 32px;
  border-radius: 50%;
  display: grid; place-items: center;
  background: rgba(255, 255, 255, 0.06);
  color: var(--ink-dim);
  flex: none;
}
.mic-btn svg { width: 16px; height: 16px; }
.fake-field {
  flex: 1;
  font-size: 12px;
  color: var(--ink-faint);
  padding: 8px 12px;
  border-radius: 9px;
  background: rgba(255, 255, 255, 0.05);
  min-height: 34px;
}

/* ============ 视频通话（场景 02） ============ */
.call {
  width: min(620px, 100%);
  border-radius: 26px;
  padding: 12px;
  background: linear-gradient(160deg, rgba(150, 200, 255, 0.26), rgba(16, 28, 50, 0.92) 45%, rgba(80, 140, 220, 0.2));
  box-shadow: var(--shadow), 0 0 110px -40px rgba(94, 231, 255, 0.7);
}
.call-main {
  position: relative;
  border-radius: 18px;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  background: #05070e;
}
.call-main > img {
  width: 100%; height: 100%;
  object-fit: cover;
  filter: saturate(1.05) contrast(1.04);
  animation: callBreath 9s ease-in-out infinite;
}
@keyframes callBreath {
  0%, 100% { transform: scale(1.02); }
  50% { transform: scale(1.07); }
}
.call-scan {
  position: absolute; inset: 0;
  background: repeating-linear-gradient(180deg, rgba(120, 220, 255, 0.05) 0 1px, transparent 1px 4px);
  mix-blend-mode: screen;
}
.call-scan::after {
  content: "";
  position: absolute; left: 0; right: 0; height: 22%;
  background: linear-gradient(180deg, transparent, rgba(94, 231, 255, 0.16), transparent);
  animation: scanMove 5.5s linear infinite;
}
@keyframes scanMove {
  0% { top: -25%; }
  100% { top: 105%; }
}
.call-grain {
  position: absolute; inset: 0;
  background: radial-gradient(circle at 50% 50%, transparent 45%, rgba(3, 6, 14, 0.6) 100%);
}
.call-badges {
  position: absolute; top: 12px; left: 12px;
  display: flex; gap: 7px;
}
.badge {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  padding: 5px 10px;
  border-radius: 999px;
  background: rgba(6, 12, 24, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.14);
  color: var(--ink-dim);
  backdrop-filter: blur(8px);
}
.badge.live { color: #fff; border-color: rgba(94, 231, 255, 0.5); }
.badge.live i {
  display: inline-block;
  width: 5px; height: 5px; border-radius: 50%;
  background: #ff5c7a;
  box-shadow: 0 0 8px #ff5c7a;
  margin-right: 5px;
  animation: blink 1.4s ease-in-out infinite;
}
.pip {
  position: absolute; top: 12px; right: 12px;
  width: 104px;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid rgba(150, 210, 255, 0.35);
  box-shadow: 0 12px 30px -12px rgba(0, 0, 0, 0.9);
}
.pip img { width: 100%; aspect-ratio: 4/3; object-fit: cover; }
.pip span {
  position: absolute; bottom: 4px; left: 6px;
  font-size: 9.5px; color: #dff2ff;
  text-shadow: 0 1px 4px #000;
}
.call-caption {
  position: absolute;
  left: 14px; right: 14px; bottom: 74px;
  padding: 11px 15px;
  border-radius: 12px;
  background: rgba(5, 10, 20, 0.72);
  border: 1px solid rgba(94, 231, 255, 0.26);
  backdrop-filter: blur(12px);
  font-size: 13.5px;
  color: #eaf6ff;
  line-height: 1.6;
  min-height: 46px;
  box-shadow: 0 16px 34px -20px rgba(0, 0, 0, 0.95);
}
.call-caption::before {
  content: "实时字幕";
  position: absolute;
  top: -9px; left: 12px;
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.14em;
  color: var(--cyan);
  background: #060c18;
  padding: 1px 7px;
  border-radius: 999px;
  border: 1px solid rgba(94, 231, 255, 0.3);
}
.call-wave {
  position: absolute;
  left: 14px; bottom: 46px;
  display: flex; align-items: flex-end; gap: 2.5px;
  height: 20px;
}
.call-wave i {
  width: 3px;
  border-radius: 3px;
  background: linear-gradient(180deg, var(--cyan-soft), var(--blue));
  animation: vbar 1.15s ease-in-out infinite;
}
.call-bar {
  position: absolute;
  left: 50%; bottom: 12px;
  transform: translateX(-50%);
  display: flex; gap: 12px;
}
.cbtn {
  width: 40px; height: 40px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(10, 18, 34, 0.78);
  backdrop-filter: blur(10px);
  display: grid; place-items: center;
  color: #dbe9ff;
  transition: transform 0.3s var(--ease), background 0.3s ease, border-color 0.3s ease;
}
.cbtn svg { width: 19px; height: 19px; }
.cbtn:hover { transform: translateY(-3px); border-color: rgba(94, 231, 255, 0.5); background: rgba(94, 231, 255, 0.14); }
.cbtn.danger {
  background: linear-gradient(160deg, #ff5c7a, #d92a4c);
  border-color: rgba(255, 120, 150, 0.6);
  color: #fff;
}
.cbtn.danger:hover { box-shadow: 0 0 26px -6px rgba(255, 92, 122, 0.9); }

/* ============ 03 声音 ============ */
.section-voice { overflow: hidden; }
.voice-aura {
  position: absolute;
  top: 50%; right: -10%;
  width: min(720px, 56vw);
  aspect-ratio: 86 / 76;
  transform: translateY(-50%);
  border-radius: 50%;
  overflow: hidden;
  opacity: 0.3;
  /* 暖金色调偏青，融进整体冷色系统 */
  filter: saturate(1.25) hue-rotate(155deg) brightness(1.05);
  mask-image: radial-gradient(circle at 50% 50%, #000 24%, transparent 66%);
  -webkit-mask-image: radial-gradient(circle at 50% 50%, #000 24%, transparent 66%);
  pointer-events: none;
  z-index: 0;
}
.voice-aura img {
  width: 100%; height: 100%;
  object-fit: cover;
  animation: orbBreathe 16s ease-in-out infinite;
}
.section-voice .shell { position: relative; z-index: 1; }

.voice-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  gap: clamp(30px, 5vw, 70px);
  align-items: center;
}
.quote {
  position: relative;
  margin: 30px 0 4px;
  padding: 24px 26px 22px 34px;
  border-radius: var(--r-md);
  border: 1px solid var(--line);
  background: linear-gradient(140deg, rgba(18, 36, 66, 0.6), rgba(8, 14, 28, 0.6));
  backdrop-filter: blur(12px);
  overflow: hidden;
}
.quote::before {
  content: "";
  position: absolute; left: 0; top: 0; bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--cyan), var(--blue));
  box-shadow: 0 0 22px rgba(94, 231, 255, 0.8);
}
.quote-mark {
  position: absolute;
  top: -8px; left: 20px;
  font-size: 62px;
  line-height: 1;
  color: rgba(94, 231, 255, 0.18);
  font-family: Georgia, serif;
}
.quote p {
  font-size: clamp(17px, 1.9vw, 22px);
  color: #fff;
  font-weight: 500;
  letter-spacing: 0.03em;
}
.quote-replay {
  margin-top: 16px;
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 15px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  background: rgba(10, 22, 42, 0.6);
  font-size: 12.5px;
  color: var(--ink-dim);
  transition: all 0.3s var(--ease);
}
.quote-replay svg { width: 15px; height: 15px; }
.quote-replay:hover { color: #fff; border-color: rgba(94, 231, 255, 0.6); background: rgba(94, 231, 255, 0.12); }
.quote-replay.spin svg { animation: spin 1s linear infinite; }

.voice-visual { position: relative; }
.wave-card { padding: 26px 26px 22px; }
#waveCanvas { width: 100%; height: 168px; display: block; margin-top: 14px; }
.wave-meta {
  display: flex; gap: 18px;
  margin-top: 12px;
  font-size: 11.5px;
  color: var(--ink-faint);
}
.wave-meta span { display: inline-flex; align-items: center; gap: 6px; }
.dot-cyan, .dot-blue, .dot-dim {
  width: 7px; height: 7px; border-radius: 50%;
}
.dot-cyan { background: var(--cyan); box-shadow: 0 0 8px var(--cyan); }
.dot-blue { background: var(--blue); box-shadow: 0 0 8px var(--blue); }
.dot-dim { background: rgba(150, 180, 220, 0.4); }
.wave-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 20px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}
.wave-stats b {
  display: block;
  font-family: var(--mono);
  font-size: 17px;
  color: var(--cyan-soft);
}
.wave-stats span { font-size: 11px; color: var(--ink-faint); }

/* ============ 04 在场 ============ */
.presence-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}
.presence-card {
  position: relative;
  padding: 30px 26px 34px;
  overflow: hidden;
  transition: transform 0.5s var(--ease), border-color 0.4s ease, box-shadow 0.5s ease;
}
.presence-card::after {
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(420px 200px at var(--mx, 50%) var(--my, 0%), rgba(94, 231, 255, 0.14), transparent 70%);
  opacity: 0;
  transition: opacity 0.45s ease;
  pointer-events: none;
}
.presence-card:hover { transform: translateY(-6px); border-color: rgba(94, 231, 255, 0.4); box-shadow: 0 30px 70px -34px rgba(94, 231, 255, 0.7); }
.presence-card:hover::after { opacity: 1; }
.pc-num {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--cyan);
  letter-spacing: 0.1em;
}
.presence-card h3 {
  margin-top: 16px;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.02em;
}
.presence-card p {
  margin-top: 12px;
  font-size: 13.5px;
  color: var(--ink-dim);
  line-height: 1.8;
}
.pc-line {
  position: absolute;
  left: 26px; right: 26px; bottom: 18px;
  height: 1px;
  background: linear-gradient(90deg, rgba(94, 231, 255, 0.5), transparent);
  transform: scaleX(0.2);
  transform-origin: left;
  transition: transform 0.6s var(--ease);
}
.presence-card:hover .pc-line { transform: scaleX(1); }

/* ============ 05 家庭 ============ */
.family-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: clamp(30px, 5vw, 70px);
  align-items: center;
}
.family-media {
  position: relative;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--line-strong);
  box-shadow: var(--shadow), 0 0 90px -40px rgba(94, 231, 255, 0.6);
}
.family-media img { width: 100%; aspect-ratio: 16/10; object-fit: cover; }
.family-frame { position: absolute; inset: 0; pointer-events: none; }
.family-frame span {
  position: absolute;
  width: 26px; height: 26px;
  border: 1.5px solid var(--cyan);
  opacity: 0.85;
}
.family-frame span:nth-child(1) { top: 12px; left: 12px; border-right: 0; border-bottom: 0; }
.family-frame span:nth-child(2) { top: 12px; right: 12px; border-left: 0; border-bottom: 0; }
.family-frame span:nth-child(3) { bottom: 12px; left: 12px; border-right: 0; border-top: 0; }
.family-frame span:nth-child(4) { bottom: 12px; right: 12px; border-left: 0; border-top: 0; }

.gen-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 30px;
}
.gen-card { padding: 18px 18px 20px; }
.gen-card em {
  font-style: normal;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--cyan);
}
.gen-card b { display: block; margin-top: 8px; font-size: 15px; }
.gen-card span { font-size: 12px; color: var(--ink-faint); }

/* ============ 06 时间轴 ============ */
.time-wrap { display: grid; gap: 34px; }
.timeline {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  padding-top: 34px;
}
.tl-track {
  position: absolute;
  top: 12px; left: 0; right: 0;
  height: 2px;
  background: rgba(120, 170, 255, 0.16);
  border-radius: 2px;
  overflow: hidden;
}
.tl-track span {
  display: block; height: 100%; width: 0;
  background: linear-gradient(90deg, var(--cyan), var(--blue));
  box-shadow: 0 0 14px rgba(94, 231, 255, 0.8);
  transition: width 0.7s var(--ease);
}
.tl-node {
  position: relative;
  text-align: left;
  padding: 26px 20px 18px;
  border-radius: var(--r-md);
  border: 1px solid var(--line);
  background: rgba(9, 17, 32, 0.5);
  transition: all 0.4s var(--ease);
}
.tl-node::before {
  content: "";
  position: absolute;
  top: -28px; left: 20px;
  width: 11px; height: 11px;
  border-radius: 50%;
  background: #0a1424;
  border: 2px solid rgba(120, 170, 255, 0.4);
  transition: all 0.4s var(--ease);
}
.tl-node em {
  display: block;
  font-style: normal;
  font-family: var(--mono);
  font-size: clamp(20px, 2.6vw, 30px);
  color: var(--ink-dim);
  letter-spacing: 0.02em;
}
.tl-node b { display: block; margin-top: 4px; font-size: 15px; color: var(--ink-faint); font-weight: 500; }
.tl-node:hover { border-color: rgba(94, 231, 255, 0.35); transform: translateY(-3px); }
.tl-node.is-active {
  border-color: rgba(94, 231, 255, 0.55);
  background: linear-gradient(150deg, rgba(20, 44, 80, 0.8), rgba(8, 16, 32, 0.7));
  box-shadow: 0 20px 50px -30px rgba(94, 231, 255, 0.9);
}
.tl-node.is-active::before {
  background: var(--cyan);
  border-color: var(--cyan);
  box-shadow: 0 0 18px var(--cyan);
}
.tl-node.is-active em {
  background: linear-gradient(120deg, #fff, var(--cyan));
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.tl-node.is-active b { color: var(--ink); }

.version-panel {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr) minmax(0, 0.72fr);
  gap: 34px;
  padding: 34px 34px 30px;
  align-items: center;
}
.vp-media {
  position: relative;
  border-radius: var(--r-md);
  overflow: hidden;
  border: 1px solid var(--line-strong);
  box-shadow: 0 22px 50px -30px rgba(94, 231, 255, 0.8);
  align-self: stretch;
  min-height: 220px;
}
.vp-media img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: 50% 28%;
}
.vp-media::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 45%, rgba(4, 8, 16, 0.88));
}
.vp-media-tag {
  position: absolute;
  left: 12px; bottom: 10px;
  z-index: 2;
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.2em;
  color: var(--cyan);
}
.vp-age {
  margin-top: 16px;
  font-family: var(--mono);
  font-size: clamp(48px, 7vw, 86px);
  line-height: 1;
  font-weight: 700;
  background: linear-gradient(180deg, #fff, var(--cyan) 60%, var(--blue));
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.vp-age span { font-size: 0.28em; margin-left: 6px; -webkit-text-fill-color: var(--ink-faint); }
.vp-desc { margin-top: 16px; font-size: 14px; color: var(--ink-dim); }
.vp-q {
  font-size: clamp(17px, 2vw, 23px);
  color: var(--cyan-soft);
  font-weight: 500;
  letter-spacing: 0.02em;
}
.vp-a {
  margin-top: 16px;
  min-height: 3.6em;
  font-size: 14.5px;
  color: var(--ink-dim);
  line-height: 1.85;
}
.vp-actions {
  display: flex; align-items: center; gap: 16px;
  margin-top: 24px;
  flex-wrap: wrap;
}
.vp-hint { font-size: 12px; color: var(--ink-faint); }

/* ============ 07 技术 ============ */
.flow { padding: 32px; margin-bottom: 22px; }
.flow-head { display: grid; gap: 6px; margin-bottom: 28px; }
.flow-head h3 { font-size: clamp(19px, 2.3vw, 27px); font-weight: 700; letter-spacing: 0.01em; }
.flow-head p { font-size: 12.5px; color: var(--ink-faint); }
.flow-cols {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  gap: 14px;
  align-items: start;
}
.flow-col { display: grid; gap: 10px; }
.fc-title {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--ink-faint);
  text-transform: uppercase;
  margin-bottom: 4px;
}
.fc-node {
  padding: 15px 16px;
  border-radius: var(--r-sm);
  border: 1px solid rgba(120, 190, 255, 0.34);
  background: linear-gradient(150deg, rgba(30, 62, 108, 0.72), rgba(12, 24, 46, 0.7));
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  text-align: center;
  transition: all 0.4s var(--ease);
}
.fc-node.accent {
  border-color: rgba(94, 231, 255, 0.6);
  box-shadow: 0 0 34px -12px rgba(94, 231, 255, 0.85), inset 0 0 30px -18px rgba(94, 231, 255, 0.9);
  animation: corePulse 3.4s ease-in-out infinite;
}
@keyframes corePulse {
  0%, 100% { box-shadow: 0 0 30px -14px rgba(94, 231, 255, 0.7), inset 0 0 26px -18px rgba(94, 231, 255, 0.8); }
  50% { box-shadow: 0 0 52px -12px rgba(94, 231, 255, 1), inset 0 0 34px -14px rgba(94, 231, 255, 1); }
}
.fc-item {
  padding: 11px 16px;
  border-radius: var(--r-sm);
  border: 1px dashed rgba(120, 170, 255, 0.2);
  background: rgba(9, 18, 34, 0.45);
  font-size: 13px;
  color: var(--ink-dim);
}
.fc-item.cyan { color: var(--cyan-soft); border-color: rgba(94, 231, 255, 0.3); }
.flow-arrow { display: grid; place-items: center; height: 100%; padding-top: 60px; }
.flow-arrow span {
  position: relative;
  width: 100%; min-width: 30px; height: 1px;
  background: linear-gradient(90deg, rgba(94, 231, 255, 0.2), rgba(94, 231, 255, 0.9));
}
.flow-arrow span::after {
  content: "";
  position: absolute;
  right: -1px; top: -3.5px;
  width: 8px; height: 8px;
  border-top: 1px solid var(--cyan);
  border-right: 1px solid var(--cyan);
  transform: rotate(45deg);
}

/* 技术栈拓扑 */
.stack { padding: 32px; }
.stack-head {
  display: flex; align-items: baseline; gap: 14px;
  margin-bottom: 26px;
  flex-wrap: wrap;
}
.stack-head h3 { font-size: 20px; font-weight: 700; }
.stack-head p {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--mint);
}
.stack-row { display: grid; gap: 14px; margin-bottom: 18px; }
.stack-row.top { grid-template-columns: 1fr; }
.stack-row.top .stack-node {
  background: linear-gradient(120deg, rgba(24, 74, 52, 0.85), rgba(10, 34, 26, 0.8));
  border-color: rgba(74, 222, 128, 0.45);
  color: #dcfce7;
  text-align: center;
  letter-spacing: 0.06em;
}
.stack-row.mid { grid-template-columns: 1fr 40px 1.25fr 40px 1fr; align-items: center; }
.stack-node {
  padding: 18px 16px;
  border-radius: var(--r-sm);
  border: 1px solid rgba(120, 190, 255, 0.32);
  background: linear-gradient(150deg, rgba(24, 48, 88, 0.72), rgba(10, 20, 38, 0.7));
  font-size: 14px;
  font-weight: 600;
  text-align: center;
  color: #eaf4ff;
  transition: all 0.4s var(--ease);
}
.stack-node:hover { transform: translateY(-3px); border-color: rgba(94, 231, 255, 0.6); }
.stack-node.core {
  border-color: rgba(94, 231, 255, 0.62);
  background: linear-gradient(150deg, rgba(30, 78, 130, 0.9), rgba(14, 32, 60, 0.82));
  color: #fff;
  box-shadow: 0 0 44px -16px rgba(94, 231, 255, 0.95);
  animation: corePulse 3.4s ease-in-out infinite;
}
.stack-node.small { padding: 13px 14px; font-size: 13px; font-weight: 500; color: var(--ink-dim); }
.stack-link {
  position: relative;
  height: 1px;
  background: linear-gradient(90deg, rgba(94, 231, 255, 0.3), rgba(94, 231, 255, 0.9));
}
.stack-link::after {
  content: "";
  position: absolute; right: -1px; top: -3.5px;
  width: 8px; height: 8px;
  border-top: 1px solid var(--cyan);
  border-right: 1px solid var(--cyan);
  transform: rotate(45deg);
}
.stack-row.branches {
  grid-template-columns: 1.25fr 1fr;
  margin-bottom: 22px;
}
.branch-group { position: relative; }
.branch-line {
  height: 20px;
  margin: 0 14% 10px;
  border-left: 1px solid rgba(94, 231, 255, 0.45);
  border-right: 1px solid rgba(94, 231, 255, 0.45);
  border-top: 1px solid rgba(94, 231, 255, 0.45);
  border-radius: 4px 4px 0 0;
}
.branch-nodes { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.branch-group.single { display: grid; align-content: start; padding-top: 30px; }
.stack-foot {
  padding-top: 20px;
  border-top: 1px solid var(--line);
  display: flex; align-items: center; gap: 20px;
  flex-wrap: wrap;
}
.sf-title {
  font-size: 17px;
  font-weight: 700;
  background: linear-gradient(100deg, #fff, var(--cyan));
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.sf-tags { display: flex; gap: 9px; flex-wrap: wrap; }
.sf-tags li {
  font-size: 12px;
  padding: 6px 13px;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--ink-dim);
  background: rgba(10, 20, 38, 0.5);
}

/* 技术壁垒 */
.barrier { margin-top: 70px; }
.barrier-list { display: grid; gap: 0; }
.barrier-list li {
  display: grid;
  grid-template-columns: 74px minmax(0, 1fr);
  gap: 20px;
  align-items: baseline;
  padding: 24px 8px;
  border-bottom: 1px solid rgba(120, 170, 255, 0.1);
  transition: background 0.45s ease, padding-left 0.45s var(--ease);
}
.barrier-list li:hover {
  background: linear-gradient(90deg, rgba(94, 231, 255, 0.08), transparent);
  padding-left: 20px;
}
.barrier-list em {
  font-style: normal;
  font-family: var(--mono);
  font-size: 16px;
  color: var(--cyan);
  opacity: 0.75;
}
.barrier-list b {
  display: block;
  font-size: clamp(17px, 2.1vw, 23px);
  color: #fff;
  font-weight: 700;
  letter-spacing: 0.02em;
}
.barrier-list p { margin-top: 6px; font-size: 13.5px; color: var(--ink-dim); }

/* ============ 隐私 ============ */
.trust-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: clamp(30px, 5vw, 70px);
  align-items: center;
}
.trust-visual { display: grid; place-items: center; gap: 20px; }
.orb {
  position: relative;
  width: min(420px, 100%);
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  border-radius: 50%;
  overflow: hidden;
  border: 1px solid rgba(94, 231, 255, 0.32);
  box-shadow:
    inset 0 0 80px -20px rgba(94, 231, 255, 0.65),
    0 0 120px -40px rgba(94, 231, 255, 0.95);
  animation: floatA 10s ease-in-out infinite;
}
.orb-photo {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  transform: scale(1.02);
  animation: orbBreathe 12s ease-in-out infinite;
}
@keyframes orbBreathe {
  0%, 100% { transform: scale(1.02) translate3d(0, 0, 0); }
  50% { transform: scale(1.09) translate3d(0, -1.5%, 0); }
}
.orb::after {
  content: "";
  position: absolute; inset: 0;
  border-radius: 50%;
  background:
    radial-gradient(circle at 34% 28%, rgba(180, 245, 255, 0.28), transparent 46%),
    radial-gradient(circle at 50% 100%, rgba(3, 6, 14, 0.55), transparent 58%);
  pointer-events: none;
}
.orb-ring {
  position: absolute;
  inset: 5%;
  border-radius: 50%;
  border: 1px solid rgba(94, 231, 255, 0.26);
  animation: spin 22s linear infinite;
  border-top-color: rgba(158, 247, 255, 0.85);
  z-index: 2;
}
.orb-ring.r2 { inset: 13%; animation-duration: 16s; animation-direction: reverse; border-top-color: rgba(59, 130, 246, 0.8); border-style: dashed; }
.orb-core {
  position: absolute;
  width: 8%; aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle, #fff, var(--cyan) 50%, transparent 76%);
  box-shadow: 0 0 44px var(--cyan);
  animation: blink 3.6s ease-in-out infinite;
  z-index: 3;
}
.orb-frame { position: absolute; inset: 0; z-index: 4; pointer-events: none; }
.orb-frame span {
  position: absolute;
  width: 22px; height: 22px;
  border: 1.5px solid rgba(158, 247, 255, 0.75);
}
.orb-frame span:nth-child(1) { top: 10%; left: 12%; border-right: 0; border-bottom: 0; }
.orb-frame span:nth-child(2) { top: 10%; right: 12%; border-left: 0; border-bottom: 0; }
.orb-frame span:nth-child(3) { bottom: 10%; left: 12%; border-right: 0; border-top: 0; }
.orb-frame span:nth-child(4) { bottom: 10%; right: 12%; border-left: 0; border-top: 0; }
.orb-cap {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.2em;
  color: var(--ink-faint);
  text-align: center;
}

.trust-items { margin-top: 34px; display: grid; gap: 22px; }
.trust-item h3 {
  font-size: clamp(17px, 2vw, 21px);
  font-weight: 700;
  color: var(--cyan-soft);
  letter-spacing: 0.02em;
}
.trust-item p { margin-top: 6px; font-size: 14px; color: var(--ink-dim); }
.trust-chips { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 30px; }
.trust-chips li {
  font-size: 13px;
  padding: 9px 17px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  background: rgba(10, 20, 38, 0.55);
  color: var(--ink-dim);
  transition: all 0.35s var(--ease);
}
.trust-chips li:hover { color: #fff; border-color: var(--cyan); box-shadow: var(--glow-cyan); }

/* ============ 定价 ============ */
.price-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}
.price-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 30px 26px 26px;
  transition: transform 0.5s var(--ease), border-color 0.4s ease, box-shadow 0.5s ease;
}
.price-card:hover { transform: translateY(-6px); border-color: rgba(94, 231, 255, 0.42); }
.price-card.featured {
  border-color: rgba(94, 231, 255, 0.5);
  background: linear-gradient(165deg, rgba(24, 56, 100, 0.72), rgba(8, 16, 32, 0.8));
  box-shadow: 0 34px 80px -40px rgba(94, 231, 255, 0.85);
}
.price-badge {
  position: absolute;
  top: -11px; left: 26px;
  font-size: 11px;
  letter-spacing: 0.1em;
  padding: 4px 12px;
  border-radius: 999px;
  background: linear-gradient(100deg, var(--cyan), var(--blue));
  color: #04121c;
  font-weight: 700;
}
.price-card h3 { font-size: 18px; letter-spacing: 0.04em; }
.price { margin-top: 12px; display: flex; align-items: baseline; gap: 8px; }
.price b {
  font-family: var(--mono);
  font-size: clamp(32px, 3.6vw, 44px);
  line-height: 1;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.02em;
}
.price em { font-style: normal; font-size: 13px; color: var(--ink-faint); }
.price-card ul {
  margin: 24px 0 26px;
  display: grid;
  gap: 0;
  flex: 1;
}
.price-card li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px dashed rgba(120, 170, 255, 0.12);
  font-size: 13.5px;
}
.price-card li:last-child { border-bottom: 0; }
.price-card li span { color: var(--ink-faint); flex: none; }
.price-card li b { color: #fff; font-weight: 600; text-align: right; }
.price-card.featured li b { color: var(--cyan-soft); }

.vault {
  margin-top: 22px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 24px;
  align-items: center;
  padding: 24px 30px;
}
.vault-left h3 { margin-top: 8px; font-size: 20px; font-weight: 700; letter-spacing: 0.04em; }
.vault-right { font-size: 14px; color: var(--ink-dim); }

.growth { margin-top: 70px; }
.growth-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}
.growth-card {
  padding: 26px 24px;
  border-radius: var(--r-md);
  border: 1px solid rgba(120, 170, 255, 0.12);
  background: linear-gradient(160deg, rgba(12, 24, 44, 0.55), rgba(7, 13, 26, 0.5));
  transition: all 0.45s var(--ease);
}
.growth-card:hover { border-color: rgba(94, 231, 255, 0.4); transform: translateY(-4px); }
.growth-card em {
  font-style: normal;
  font-family: var(--mono);
  font-size: 22px;
  color: var(--cyan);
  opacity: 0.85;
}
.growth-card h4 { margin-top: 12px; font-size: 18px; font-weight: 700; }
.growth-card p { margin-top: 8px; font-size: 13.5px; color: var(--ink-dim); }
.growth-card span {
  display: inline-block;
  margin-top: 18px;
  font-size: 12.5px;
  color: var(--mint);
  padding: 6px 13px;
  border-radius: 999px;
  border: 1px solid rgba(74, 222, 128, 0.3);
  background: rgba(74, 222, 128, 0.08);
}

/* ============ CTA ============ */
.cta-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: clamp(30px, 5vw, 70px);
  align-items: center;
}
.cta-title {
  font-size: clamp(34px, 5.6vw, 68px);
  line-height: 1.1;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-top: 6px;
}
.cta-lede { margin-top: 22px; font-size: 16px; color: var(--ink-dim); }
.cta-tags { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 24px; }
.cta-tags li {
  font-size: 12.5px;
  padding: 8px 16px;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--ink-dim);
  background: rgba(10, 20, 38, 0.5);
}
.cta-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 34px; }

.cta-qr { display: grid; justify-items: center; gap: 14px; }
.qr-card {
  width: min(280px, 100%);
  padding: 14px;
  border-radius: var(--r-lg);
  background: #fff;
  box-shadow: 0 30px 70px -30px rgba(94, 231, 255, 0.8), 0 0 0 1px rgba(255, 255, 255, 0.2);
  animation: deviceFloat 8s ease-in-out infinite;
}
.qr-card img { border-radius: 8px; }
.qr-label {
  font-size: 14px;
  font-weight: 600;
  background: linear-gradient(100deg, var(--mint), var(--cyan));
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: 0.04em;
}

/* ============ 幻灯片画廊 ============ */
.deck-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
}
.deck-item {
  position: relative;
  display: block;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
  background: #070c16;
  transition: transform 0.45s var(--ease), border-color 0.4s ease, box-shadow 0.45s ease;
}
.deck-item:hover {
  transform: translateY(-5px);
  border-color: rgba(94, 231, 255, 0.5);
  box-shadow: 0 26px 60px -30px rgba(94, 231, 255, 0.85);
}
.deck-item img { width: 100%; aspect-ratio: 16/9; object-fit: cover; display: block; }
.deck-item .dk-num {
  position: absolute;
  top: 10px; left: 10px;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  padding: 4px 9px;
  border-radius: 999px;
  background: rgba(5, 10, 20, 0.78);
  border: 1px solid rgba(94, 231, 255, 0.3);
  color: var(--cyan);
  backdrop-filter: blur(8px);
}
.deck-item .dk-cap {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 26px 14px 12px;
  font-size: 13px;
  color: #eaf4ff;
  background: linear-gradient(180deg, transparent, rgba(4, 7, 14, 0.92) 60%);
  text-align: left;
  transform: translateY(6px);
  opacity: 0;
  transition: all 0.4s var(--ease);
}
.deck-item:hover .dk-cap { transform: translateY(0); opacity: 1; }

/* 灯箱 */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 150;
  display: grid;
  place-items: center;
  gap: 16px;
  padding: 40px 20px;
  background: rgba(3, 5, 11, 0.94);
  backdrop-filter: blur(14px);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.4s ease, visibility 0.4s ease;
}
.lightbox.open { opacity: 1; visibility: visible; }
.lightbox img {
  max-width: min(1200px, 92vw);
  max-height: 78vh;
  border-radius: 14px;
  border: 1px solid rgba(94, 231, 255, 0.3);
  box-shadow: 0 40px 120px -40px rgba(94, 231, 255, 0.7);
  object-fit: contain;
}
.lb-cap { font-size: 13.5px; color: var(--ink-dim); font-family: var(--mono); letter-spacing: 0.08em; }
.lb-close, .lb-prev, .lb-next {
  position: absolute;
  width: 46px; height: 46px;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  background: rgba(10, 20, 38, 0.8);
  color: var(--ink);
  font-size: 20px;
  display: grid; place-items: center;
  transition: all 0.3s var(--ease);
}
.lb-close { top: 24px; right: 24px; font-size: 15px; }
.lb-prev { left: 20px; top: 50%; transform: translateY(-50%); }
.lb-next { right: 20px; top: 50%; transform: translateY(-50%); }
.lb-close:hover, .lb-prev:hover, .lb-next:hover {
  border-color: var(--cyan);
  background: rgba(94, 231, 255, 0.16);
  box-shadow: var(--glow-cyan);
}

/* ============ 页脚 ============ */
.footer {
  position: relative;
  z-index: 2;
  border-top: 1px solid var(--line);
  padding: 54px 0 40px;
  background: linear-gradient(180deg, transparent, rgba(4, 8, 16, 0.85));
}
.footer-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 22px 40px;
  align-items: center;
}
.footer-brand b { font-size: 17px; letter-spacing: 0.05em; }
.footer-brand p { margin-top: 8px; font-size: 13px; color: var(--ink-faint); }
.footer-nav { display: flex; gap: 20px; flex-wrap: wrap; }
.footer-nav a { font-size: 13px; color: var(--ink-dim); transition: color 0.3s ease; }
.footer-nav a:hover { color: var(--cyan); }
.footer-note {
  grid-column: 1 / -1;
  padding-top: 22px;
  border-top: 1px solid rgba(120, 170, 255, 0.09);
  font-size: 12px;
  color: var(--ink-faint);
}

/* ============ 滚动显现 ============ */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
  transition-delay: calc(var(--rd, 0) * 90ms);
}
.reveal.in { opacity: 1; transform: none; }

.hero-title .line.reveal { transform: translateY(38px); }
/* Reset the hero entrance offset once the line is revealed. */
.hero-title .line.reveal.in { transform: none; }

/* ============ 响应式 ============ */
@media (max-width: 1180px) {
  .nav-links a { padding: 7px 9px; font-size: 12px; }
  .nav-links a em { display: none; }
}

@media (max-width: 1024px) {
  .nav-links {
    position: fixed;
    top: 62px; left: 12px; right: 12px;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding: 12px;
    border-radius: var(--r-md);
    background: rgba(6, 11, 22, 0.96);
    backdrop-filter: blur(22px);
    border: 1px solid var(--line);
    box-shadow: var(--shadow);
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    transition: all 0.35s var(--ease);
    z-index: 79;
  }
  .nav-links.open { transform: none; opacity: 1; visibility: visible; }
  .nav-links a { padding: 11px 14px; font-size: 14px; }
  .nav-links a em { display: inline; }
  .nav-toggle { display: block; }
  .nav-live { display: none; }

  .hero-shell { grid-template-columns: 1fr; gap: 54px; }
  .hero-device { justify-self: start; width: min(300px, 100%); }
  .device-screen { height: 480px; }
  .hero { padding-top: 108px; }
  .hero-orbit { display: none; }

  .intro-grid,
  .scene-grid,
  .scene-grid.reverse,
  .voice-grid,
  .family-grid,
  .trust-grid,
  .cta-grid,
  .version-panel { grid-template-columns: 1fr; }
  .scene-grid.reverse .scene-copy { order: 0; }
  .scene-grid.reverse .scene-stage { order: 1; }
  .vp-media { min-height: 200px; }
  .scene-grid.reverse .scene-stage { order: 1; }

  .flow-cols { grid-template-columns: 1fr; gap: 12px; }
  .flow-arrow { padding-top: 0; height: 30px; }
  .flow-arrow span { width: 1px; height: 100%; min-width: 0; background: linear-gradient(180deg, rgba(94, 231, 255, 0.2), rgba(94, 231, 255, 0.9)); margin-inline: auto; }
  .flow-arrow span::after { right: -3.5px; top: auto; bottom: -1px; transform: rotate(135deg); }

  .stack-row.mid { grid-template-columns: 1fr; }
  .stack-link { display: none; }
  .stack-row.branches { grid-template-columns: 1fr; }
  .branch-group.single { padding-top: 0; }

  .price-grid { grid-template-columns: 1fr; }
  .vault { grid-template-columns: 1fr; text-align: left; }
  .growth-grid { grid-template-columns: 1fr; }
  .presence-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .shell { width: calc(100% - 32px); }
  .hero-shell { width: calc(100% - 32px); }
  .hero-tags { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .stat-row { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
  .timeline { grid-template-columns: 1fr; gap: 12px; padding-top: 0; }
  .tl-track { display: none; }
  .tl-node { padding: 18px; }
  .tl-node::before { display: none; }
  .tl-node em { font-size: 22px; }
  .barrier-list li { grid-template-columns: 46px 1fr; gap: 14px; padding: 20px 4px; }
  .flow, .stack { padding: 22px 18px; }
  .intro-card, .wave-card { padding: 24px 20px; }
  .presence-card, .price-card { padding: 24px 20px; }
  .gen-row { grid-template-columns: 1fr; }
  .pip { width: 82px; }
  .call-caption { font-size: 12px; bottom: 66px; }
  .call-wave { display: none; }
  .phone { height: 560px; }
  .hero-title { font-size: clamp(38px, 11vw, 60px); }
  .deck-grid { grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 12px; }
  .cursor-glow { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .reveal { opacity: 1; transform: none; }
}

@media print {
  .bg-layer, .nav, .cursor-glow, .scroll-progress, .boot, .hero-scroll { display: none; }
  body { background: #fff; color: #111; }
}