/* ============================================================
   聆稿 · 专业提词系统 —— 官网样式
   style.css —— 暗色霓虹 / 玻璃拟态 / 图形优先 / 无 emoji
   结构：0 基础  1 组件  2 图标  3 导航  4 首屏  5 跑马灯  6 章节
        7 扫码即控  9 图卡（导入 / 随手可调）
        10 两屏同频  11 声随  12 对比  13 网页与下载  14 页脚
        15 响应式  16 无障碍
   ============================================================ */

/* ---------- 0. 基础 ---------- */
:root {
  --bg: #05060a;
  --bg-soft: #0a0c14;
  --panel: rgba(255, 255, 255, .045);
  --panel-strong: rgba(255, 255, 255, .075);
  --line: rgba(255, 255, 255, .10);
  --line-soft: rgba(255, 255, 255, .06);

  --text: #eef1f8;
  --text-2: #b9c0d4;
  --text-3: #7d869c;

  --cyan: #22d3ee;
  --violet: #8b5cf6;
  --pink: #f472b6;
  --lime: #a3e635;

  --grad: linear-gradient(120deg, var(--cyan), var(--violet) 48%, var(--pink));
  --grad-soft: linear-gradient(120deg, rgba(34, 211, 238, .18), rgba(139, 92, 246, .18) 48%, rgba(244, 114, 182, .16));

  --radius: 20px;
  --radius-sm: 12px;
  --shadow: 0 24px 70px -30px rgba(0, 0, 0, .95);

  --font: "Inter", "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei",
          "Source Han Sans SC", "Noto Sans SC", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;

  --nav-h: 70px;
  --container: 1160px;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 16px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(900px 600px at 12% -8%, rgba(34, 211, 238, .13), transparent 60%),
    radial-gradient(820px 620px at 88% 4%, rgba(139, 92, 246, .15), transparent 62%),
    radial-gradient(900px 700px at 50% 108%, rgba(244, 114, 182, .10), transparent 65%);
}

img, svg, canvas { max-width: 100%; display: block; }
h1, h2, h3 { line-height: 1.2; letter-spacing: -.02em; margin: 0 0 .5em; font-weight: 800; }
p { margin: 0 0 1em; }
a { color: inherit; text-decoration: none; }
ul, ol { margin: 0; padding: 0; list-style: none; }

::selection { background: rgba(139, 92, 246, .38); color: #fff; }
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: #07080d; }
::-webkit-scrollbar-thumb { background: linear-gradient(var(--cyan), var(--violet)); border-radius: 8px; border: 2px solid #07080d; }

.bg-noise {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: .5;
  background-image:
    linear-gradient(rgba(255, 255, 255, .028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .028) 1px, transparent 1px);
  background-size: 64px 64px, 64px 64px;
  mask-image: radial-gradient(circle at 50% 30%, #000 0%, transparent 78%);
  -webkit-mask-image: radial-gradient(circle at 50% 30%, #000 0%, transparent 78%);
}

.scroll-progress {
  position: fixed;
  top: 0; left: 0;
  height: 3px; width: 0;
  z-index: 120;
  background: var(--grad);
  box-shadow: 0 0 18px rgba(139, 92, 246, .8);
  transition: width .1s linear;
}

.cursor-glow {
  position: fixed;
  width: 380px; height: 380px;
  margin: -190px 0 0 -190px;
  border-radius: 50%;
  pointer-events: none;
  z-index: 2;
  opacity: 0;
  transition: opacity .4s ease;
  background: radial-gradient(circle, rgba(34, 211, 238, .10), rgba(139, 92, 246, .07) 42%, transparent 70%);
  filter: blur(6px);
}
body.has-cursor .cursor-glow { opacity: 1; }

.skip-link {
  position: fixed;
  top: 10px; left: 50%;
  transform: translate(-50%, -160%);
  z-index: 200;
  padding: 11px 22px;
  border-radius: 999px;
  background: var(--grad);
  color: #08080f;
  font-weight: 800;
  font-size: 14px;
  transition: transform .25s cubic-bezier(.2, .8, .2, 1);
}
.skip-link:focus { transform: translate(-50%, 0); }

/* ---------- 1. 组件 ---------- */
.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px; position: relative; z-index: 3; }

.glass-card {
  position: relative;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: var(--shadow);
}

.grad-text {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  background-size: 200% 200%;
  animation: gradShift 8s ease infinite;
}
@keyframes gradShift { 0%, 100% { background-position: 0% 50%; } 50% { background-position: 100% 50%; } }

.btn[hidden] { display: none !important; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 12px 22px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel-strong);
  color: var(--text);
  font: inherit;
  font-weight: 650;
  font-size: 15px;
  cursor: pointer;
  white-space: nowrap;
  transition: transform .22s cubic-bezier(.2, .8, .2, 1), box-shadow .22s, background .22s, border-color .22s;
}
.btn:hover { transform: translateY(-2px); border-color: rgba(255, 255, 255, .26); }
.btn:active { transform: translateY(0) scale(.985); }
.btn-primary {
  background: var(--grad);
  background-size: 180% 180%;
  border-color: transparent;
  color: #08080f;
  font-weight: 800;
  box-shadow: 0 14px 40px -16px rgba(139, 92, 246, .95);
  position: relative;
  overflow: hidden;
}
.btn-primary::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(110deg, transparent 20%, rgba(255, 255, 255, .5) 45%, transparent 70%);
  transform: translateX(-120%);
  transition: transform .75s ease;
}
.btn-primary:hover::after { transform: translateX(120%); }
.btn-glass { background: rgba(255, 255, 255, .05); }
.btn-sm { padding: 9px 16px; font-size: 14px; }
.btn-lg { padding: 14px 26px; font-size: 16px; }
.btn-xl { padding: 16px 30px; font-size: 16.5px; }

.pill {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 14px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, .04);
  font-size: 13px;
  color: var(--text-2);
  font-family: var(--mono);
}

.badge-live {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: .08em;
  padding: 3px 10px;
  border-radius: 999px;
  color: #06251f;
  background: linear-gradient(120deg, var(--lime), var(--cyan));
}
.badge-live::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: #06251f; animation: blink 1.4s steps(2, start) infinite; }
@keyframes blink { 50% { opacity: .2; } }

.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s cubic-bezier(.2, .8, .2, 1), transform .7s cubic-bezier(.2, .8, .2, 1); }
.reveal.in { opacity: 1; transform: none; }

.chip-row { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 10px; margin-top: 26px; }
.chip-row.left { justify-content: flex-start; margin-top: 22px; }
.chips-label { font-family: var(--mono); font-size: 11.5px; letter-spacing: .16em; color: var(--text-3); margin-right: 4px; }
.chip-big {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, .04);
  font-size: 14px;
  color: var(--text-2);
  transition: transform .25s, border-color .25s, color .25s;
}
.chip-big:hover { transform: translateY(-3px); border-color: rgba(34, 211, 238, .4); color: #fff; }

/* ---------- 2. 图标（内联 SVG，替代 emoji） ---------- */
.sprite { position: absolute; width: 0; height: 0; overflow: hidden; }
.ico {
  width: 18px; height: 18px;
  flex: 0 0 auto;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.ico-lg { width: 24px; height: 24px; }
.ico-badge {
  display: grid;
  place-items: center;
  width: 46px; height: 46px;
  flex: 0 0 auto;
  border-radius: 14px;
  background: var(--grad-soft);
  border: 1px solid var(--line);
  color: var(--cyan);
}
.ico-badge .ico { width: 22px; height: 22px; }

/* ---------- 3. 导航 ---------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  border-bottom: 1px solid transparent;
  transition: background .3s, height .3s, border-color .3s;
}
.nav.scrolled {
  background: rgba(6, 7, 12, .78);
  backdrop-filter: blur(18px) saturate(150%);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
  border-bottom-color: var(--line-soft);
  height: 62px;
}
.nav-inner {
  width: 100%;
  max-width: 1320px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.brand { display: flex; align-items: center; gap: 11px; font-weight: 800; }
.brand-mark { display: grid; place-items: center; }
.brand-logo {
  width: 32px; height: 32px;
  display: block;
  border-radius: 9px;
  filter: drop-shadow(0 0 10px rgba(11, 132, 243, .5));
}
.brand-logo-sm { width: 28px; height: 28px; border-radius: 8px; }
.brand-text { display: flex; flex-direction: column; line-height: 1.1; font-size: 17.5px; font-weight: 800; letter-spacing: -.01em; }
.brand-text em { font-style: normal; font-size: 10.5px; font-weight: 600; letter-spacing: .18em; color: var(--text-3); font-family: var(--mono); }

.nav-links { display: flex; align-items: center; gap: 24px; }
.nav-links a { font-size: 14.5px; color: var(--text-2); position: relative; padding: 6px 0; transition: color .2s; }
.nav-links a::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  height: 2px; width: 0;
  border-radius: 2px;
  background: var(--grad);
  transition: width .28s cubic-bezier(.2, .8, .2, 1);
}
.nav-links a:hover, .nav-links a.active { color: #fff; }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }
.nav-actions { display: flex; align-items: center; gap: 10px; }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 42px; height: 42px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--panel);
  cursor: pointer;
}
.nav-toggle span { display: block; height: 2px; width: 18px; margin: 0 auto; background: var(--text); border-radius: 2px; transition: transform .3s, opacity .3s; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- 4. 首屏 ---------- */
.hero { position: relative; min-height: 100svh; padding: calc(var(--nav-h) + 56px) 0 84px; display: flex; align-items: center; overflow: hidden; }
.hero-canvas { position: absolute; inset: 0; z-index: 0; width: 100%; height: 100%; }
.hero-aurora { position: absolute; inset: 0; z-index: 1; pointer-events: none; filter: blur(70px); opacity: .55; }
.hero-aurora i { position: absolute; border-radius: 50%; display: block; }
.hero-aurora i:nth-child(1) { width: 460px; height: 460px; left: -80px; top: -60px; background: rgba(34, 211, 238, .40); animation: drift1 20s ease-in-out infinite; }
.hero-aurora i:nth-child(2) { width: 520px; height: 520px; right: -120px; top: 40px; background: rgba(139, 92, 246, .42); animation: drift2 24s ease-in-out infinite; }
.hero-aurora i:nth-child(3) { width: 420px; height: 420px; left: 42%; bottom: -160px; background: rgba(244, 114, 182, .32); animation: drift3 28s ease-in-out infinite; }
@keyframes drift1 { 50% { transform: translate3d(90px, 60px, 0) scale(1.12); } }
@keyframes drift2 { 50% { transform: translate3d(-110px, 80px, 0) scale(1.08); } }
@keyframes drift3 { 50% { transform: translate3d(60px, -80px, 0) scale(1.14); } }

.hero-inner { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr); gap: 58px; align-items: center; width: 100%; }

.hero-brand {
  font-size: clamp(3rem, 8.4vw, 5.4rem);
  font-weight: 900;
  letter-spacing: -.045em;
  line-height: 1.05;
  margin: 0 0 4px;
}
/* slogan 字号不超过品牌名的一半 */
.hero-slogan { font-size: clamp(1.3rem, 3vw, 2.5rem); font-weight: 800; letter-spacing: -.02em; margin: 0 0 22px; }
.hero-sub { font-size: clamp(1rem, 1.3vw, 1.1rem); color: var(--text-2); max-width: 32em; margin-bottom: 30px; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 13px; margin-bottom: 38px; }

.hero-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px 20px;
  padding-top: 26px;
  border-top: 1px solid var(--line-soft);
}
.hero-stats li { display: grid; gap: 5px; align-content: start; }
.stat-ico { color: var(--cyan); }
.stat-ico .ico { width: 20px; height: 20px; }
.hero-stats b {
  display: block;
  font-size: clamp(1rem, 1.5vw, 1.18rem);
  font-weight: 850;
  letter-spacing: -.01em;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-stats span { font-size: 12.5px; color: var(--text-3); line-height: 1.55; display: block; }

.hero-visual { position: relative; }
.hero-screen { padding: 0; overflow: hidden; transform: perspective(1400px) rotateY(-9deg) rotateX(4deg); transition: transform .6s cubic-bezier(.2, .8, .2, 1); }
.hero-visual:hover .hero-screen { transform: perspective(1400px) rotateY(-3deg) rotateX(1.5deg) translateY(-6px); }
.screen-bar { display: flex; align-items: center; gap: 12px; padding: 12px 16px; border-bottom: 1px solid var(--line-soft); background: rgba(255, 255, 255, .03); }
.screen-bar .dots { display: flex; gap: 6px; }
.screen-bar .dots i { width: 9px; height: 9px; border-radius: 50%; background: #2a2f3d; }
.screen-bar .dots i:nth-child(1) { background: #ff5f57; }
.screen-bar .dots i:nth-child(2) { background: #fbbf24; }
.screen-bar .dots i:nth-child(3) { background: #28c840; }
.screen-title { font-size: 12.5px; color: var(--text-3); font-family: var(--mono); margin-right: auto; }
.screen-body { position: relative; padding: 26px 22px; }
.screen-lines { display: grid; gap: 14px; position: relative; z-index: 2; }
.screen-lines p { margin: 0; font-size: 16.5px; color: rgba(255, 255, 255, .28); }
.screen-lines p.hl { color: #fff; text-shadow: 0 0 22px rgba(34, 211, 238, .55); }
.screen-focus {
  position: absolute;
  left: 0; right: 0; top: 50%;
  height: 54px;
  transform: translateY(-50%);
  background: linear-gradient(90deg, transparent, rgba(34, 211, 238, .10), transparent);
  border-top: 1px solid rgba(34, 211, 238, .28);
  border-bottom: 1px solid rgba(34, 211, 238, .28);
}
.screen-foot { display: flex; flex-wrap: wrap; gap: 16px; padding: 12px 18px; border-top: 1px solid var(--line-soft); font-size: 12px; color: var(--text-3); font-family: var(--mono); }
.screen-foot span { display: inline-flex; align-items: center; gap: 6px; }
.screen-foot .k { width: 7px; height: 7px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 10px var(--cyan); }

.float-chip {
  position: absolute;
  padding: 9px 16px;
  border-radius: 999px;
  background: rgba(10, 12, 20, .84);
  border: 1px solid var(--line);
  font-size: 12.5px;
  font-weight: 650;
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow);
  animation: floaty 6s ease-in-out infinite;
}
.chip-1 { top: -34px; right: -14px; }
.chip-2 { bottom: -16px; left: -26px; animation-delay: 1.4s; }
.chip-3 { bottom: -14px; right: -18px; animation-delay: 2.6s; }
@keyframes floaty { 50% { transform: translateY(-11px); } }

.scroll-hint {
  position: absolute;
  left: 50%; bottom: 24px;
  transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  font-size: 11.5px;
  letter-spacing: .2em;
  color: var(--text-3);
  z-index: 3;
}
.scroll-hint span { width: 22px; height: 36px; border: 1px solid var(--line); border-radius: 999px; position: relative; }
.scroll-hint span::after {
  content: "";
  position: absolute;
  left: 50%; top: 7px;
  width: 3px; height: 7px;
  border-radius: 2px;
  background: var(--cyan);
  transform: translateX(-50%);
  animation: scrollWheel 1.8s ease-in-out infinite;
}
@keyframes scrollWheel { 0% { opacity: 0; transform: translate(-50%, 0); } 40% { opacity: 1; } 100% { opacity: 0; transform: translate(-50%, 14px); } }

/* ---------- 5. 跑马灯 ---------- */
.marquee {
  position: relative;
  z-index: 3;
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
  background: rgba(255, 255, 255, .02);
  overflow: hidden;
  padding: 14px 0;
  mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
}
.marquee-track {
  display: flex;
  align-items: center;
  gap: 26px;
  width: max-content;
  animation: marquee 34s linear infinite;
  font-family: var(--mono);
  font-size: 13.5px;
  color: var(--text-2);
  letter-spacing: .06em;
}
.marquee-track i { color: var(--violet); font-style: normal; font-size: 9px; }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- 6. 章节 ---------- */
.section { position: relative; z-index: 3; padding: 88px 0; }
.section-alt { background: linear-gradient(180deg, rgba(255, 255, 255, .016), transparent 60%); }
.section-alt::before {
  content: "";
  position: absolute; inset: 0;
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
  pointer-events: none;
}
.sec-head { max-width: 700px; margin: 0 auto 46px; text-align: center; }
.sec-tag { font-family: var(--mono); font-size: 12px; letter-spacing: .3em; color: var(--cyan); margin-bottom: 12px; text-transform: uppercase; }
.sec-head h2 { font-size: clamp(1.75rem, 3.6vw, 2.6rem); }
.sec-sub { color: var(--text-2); font-size: 1rem; margin: 0; }

.step-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--text-3);
}
.step-badge b {
  display: grid;
  place-items: center;
  width: 30px; height: 30px;
  border-radius: 10px;
  font-size: 13px;
  letter-spacing: 0;
  color: var(--cyan);
  background: rgba(34, 211, 238, .1);
  border: 1px solid rgba(34, 211, 238, .3);
}
.sec-head .step-badge { justify-content: center; }

/* ---------- 6.5 变革：以前 / 现在（并排动画） ---------- */
.shift-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.shift-card {
  margin: 0;
  padding: 20px 20px 18px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--panel);
  backdrop-filter: blur(12px);
}
.shift-old { border-color: rgba(248, 113, 113, .22); }
.shift-new {
  border: 1px solid transparent;
  background:
    linear-gradient(var(--bg-soft), var(--bg-soft)) padding-box,
    var(--grad) border-box;
  box-shadow: 0 30px 80px -48px rgba(139, 92, 246, .95);
}
.shift-head { display: flex; align-items: center; gap: 10px; font-size: 13.5px; color: var(--text-3); margin-bottom: 10px; }
.shift-badge {
  font-family: var(--mono);
  font-size: 11px;
  padding: 3px 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, .06);
  color: var(--text-3);
}
.shift-badge-now { background: var(--grad); color: #06121a; font-weight: 800; }
.shift-scene { width: 100%; height: auto; display: block; }

/* 图形基色 */
.shift-scene { fill: none; stroke: var(--text-3); stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.s-floor { stroke: rgba(255, 255, 255, .12); }
.s-tag { fill: var(--text-3); stroke: none; font-size: 11px; font-family: var(--mono); }
.s-dev { fill: rgba(255, 255, 255, .04); }
.s-lens { fill: rgba(255, 255, 255, .07); }
.s-cone { stroke: rgba(255, 255, 255, .18); stroke-dasharray: 5 6; transition: stroke .2s; }
.s-glass { fill: rgba(34, 211, 238, .10); stroke: rgba(34, 211, 238, .55); }
.s-joint { fill: rgba(34, 211, 238, .30); stroke: rgba(34, 211, 238, .65); }
.s-bar { fill: rgba(255, 255, 255, .16); stroke: none; }
.s-bar.on { fill: #22d3ee; }
.s-range { fill: none; stroke: rgba(34, 211, 238, .75); stroke-dasharray: 4 4; }
.s-body, .s-arm, .s-leg { stroke: var(--text-2); }
.s-head { fill: rgba(255, 255, 255, .06); stroke: var(--text-2); }
.s-finger { fill: #fbbf24; stroke: none; }`n.s-hand { fill: rgba(251, 191, 36, .85); stroke: none; }`n.s-block { stroke: #f87171; stroke-dasharray: 4 4; opacity: 0; }
.s-strain { stroke: rgba(248, 113, 113, .75); }
.s-finger-echo { fill: #f87171; stroke: none; opacity: 0; }
.s-warn { fill: #f87171; stroke: none; font-size: 12.5px; font-weight: 800; opacity: 0; }
.s-ok { stroke: var(--lime); stroke-width: 3; }
.s-wifi { stroke: rgba(34, 211, 238, .8); }
.s-badge { fill: rgba(163, 230, 53, .12); stroke: rgba(163, 230, 53, .55); }
.s-badge-t { fill: #d9f99d; stroke: none; font-size: 12px; font-weight: 700; }

/* ---- 同一个 12 秒节拍：左屏手指滑动 ↔ 右屏拇指滑动 ---- */
@keyframes sFore {
  0%, 6% { transform: rotate(0deg); }
  30%, 48% { transform: rotate(-13deg); }   /* 小臂绕肘转动：手指沿平板往里划，肩膀不动 */
  58%, 100% { transform: rotate(0deg); }
}
.s-fore { transform-box: view-box; transform-origin: 282px 214px; animation: sFore 12s cubic-bezier(.45, .05, .25, 1) infinite; }
.s-thumb { animation: sThumb 12s cubic-bezier(.45, .05, .25, 1) infinite; }
.s-bar.on { animation: sBarMove 12s cubic-bezier(.45, .05, .25, 1) infinite; }
@keyframes sThumb {
  0%, 6% { transform: translateY(0); }
  26%, 46% { transform: translateY(-24px); }
  56%, 100% { transform: translateY(0); }
}
@keyframes sBarMove {
  0%, 6% { transform: translateY(0); }
  26%, 46% { transform: translateY(-5px); }
  56%, 100% { transform: translateY(0); }
}

/* 入画警告：与手指进入构图同步 */
@keyframes sWarn {
  0%, 24% { opacity: 0; }
  28%, 48% { opacity: 1; }
  52%, 100% { opacity: 0; }
}
.s-warn, .s-finger-echo, .s-block { animation: sWarn 12s steps(1, end) infinite; }
@keyframes sCone {
  0%, 24% { stroke: rgba(255, 255, 255, .18); }
  28%, 48% { stroke: #f87171; }
  52%, 100% { stroke: rgba(255, 255, 255, .18); }
}
.shift-old .s-cone { animation: sCone 12s steps(1, end) infinite; }
@keyframes sVf {
  0%, 24% { stroke: var(--line); }
  28%, 48% { stroke: #f87171; }
  52%, 100% { stroke: var(--line); }
}
.shift-old .s-vf { animation: sVf 12s steps(1, end) infinite; }

/* 老办法：身体一直在较劲 */
@keyframes sStrain {
  0%, 100% { transform: rotate(0deg); }
  50% { transform: rotate(-2.2deg); }
}
.s-staff { transform-box: fill-box; transform-origin: bottom center; animation: sStrain 1.4s ease-in-out infinite; }

/* 新办法：Wi-Fi 脉冲 + 呼吸感 */
@keyframes sWifi {
  0%, 100% { opacity: .25; }
  50% { opacity: 1; }
}
.s-wifi { animation: sWifi 2.4s ease-in-out infinite; }
.s-wifi:nth-of-type(2) { animation-delay: .25s; }
.s-wifi:nth-of-type(3) { animation-delay: .5s; }
@keyframes sBreathe {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-2px); }
}
.s-staff-ok { transform-box: fill-box; transform-origin: bottom center; animation: sBreathe 4.6s ease-in-out infinite; }

/* 首屏里的入口小链接 */
.hero-hint { margin: 0 0 34px; font-size: 13.5px; }
.hero-hint a { color: var(--cyan); border-bottom: 1px solid rgba(34, 211, 238, .35); }
.hero-hint a:hover { color: #fff; }

/* ---------- 7. 扫码即控 ---------- */
.frame-card { padding: 38px 30px; }

/* 舞台：左平板（出框）· 中间扫码连线 · 右手机 */
.stage {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 26px;
  padding: 8px 0 4px;
}

.dev {
  position: relative;
  flex: 0 0 auto;
  background: linear-gradient(160deg, #262b3b, #0c0e16 40%, #1b2030);
  box-shadow: 0 44px 96px -46px rgba(139, 92, 246, .9), inset 0 0 0 1px rgba(255, 255, 255, .09);
}
.dev-screen {
  height: 100%;
  display: flex;
  flex-direction: column;
  background: linear-gradient(180deg, #0d1018, #07080e);
  border: 1px solid var(--line-soft);
  overflow: hidden;
}

/* 平板：屏幕上是提词内容 + 二维码，整体向左侧出框 */
.dev-tablet { width: 380px; aspect-ratio: 4 / 3; padding: 13px; border-radius: 24px; margin-left: -120px; }
.dev-tablet .dev-screen { border-radius: 14px; padding: 14px 16px; }
.t-bar { display: flex; align-items: center; justify-content: space-between; font-family: var(--mono); font-size: 10px; color: var(--text-3); margin-bottom: 10px; }
.t-bar i { width: 6px; height: 6px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 8px var(--cyan); animation: blink 1.6s steps(2, start) infinite; }
.t-body { flex: 1; display: grid; grid-template-columns: 1fr auto; gap: 14px; align-items: center; }
.t-lines { display: grid; gap: 7px; }
.t-lines p { margin: 0; font-size: 11px; line-height: 1.45; color: rgba(255, 255, 255, .26); }
.t-lines p.on { color: #fff; }
.t-qr { position: relative; width: 96px; height: 96px; padding: 7px; border-radius: 11px; background: #fff; }
.t-qr i { display: block; width: 100%; height: 100%; border-radius: 5px; background: repeating-conic-gradient(#0b0d16 0% 25%, #fff 0% 50%) 50% / 9px 9px; }
.t-qr::after {
  content: "";
  position: absolute;
  inset: -7px;
  border-radius: 16px;
  border: 1px solid rgba(34, 211, 238, .65);
  animation: qrPing 2.6s ease-out infinite;
}
@keyframes qrPing {
  0% { transform: scale(.94); opacity: 0; }
  30% { opacity: .95; }
  100% { transform: scale(1.14); opacity: 0; }
}
.t-cap { margin: 10px 0 0; font-family: var(--mono); font-size: 10px; color: var(--cyan); text-align: center; }

/* 手机：控制端界面 */
.dev-phone { width: 162px; aspect-ratio: 9 / 19; padding: 9px; border-radius: 26px; }
.dev-phone .dev-screen { border-radius: 18px; padding: 14px 11px; gap: 9px; }
.p-top { display: flex; align-items: center; justify-content: space-between; font-size: 9.5px; color: var(--text-3); }
.p-top i { width: 6px; height: 6px; border-radius: 50%; background: var(--lime); box-shadow: 0 0 8px var(--lime); }
.p-lines { display: grid; gap: 7px; margin: auto 0; }
.p-lines p { margin: 0; font-size: 10px; line-height: 1.4; color: rgba(255, 255, 255, .26); }
.p-lines p.on { color: #fff; }
.p-range { position: relative; height: 5px; margin-top: auto; border-radius: 999px; background: rgba(255, 255, 255, .1); }
.p-range span { position: absolute; inset: 0 42% 0 0; border-radius: 999px; background: var(--grad); }
.p-range::after {
  content: "";
  position: absolute;
  left: 58%; top: 50%;
  width: 12px; height: 12px;
  margin: -6px 0 0 -6px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 0 10px rgba(139, 92, 246, .9);
}
.p-btns { display: grid; grid-template-columns: repeat(3, 1fr); gap: 7px; }
.p-btns i { display: block; height: 22px; border-radius: 8px; border: 1px solid var(--line); background: rgba(255, 255, 255, .05); }
.p-btns i.main { border-color: transparent; background: var(--grad); }

/* 扫码连线：横向贯穿两台设备之间 */
.scan-link { position: relative; width: 100%; min-width: 120px; height: 20px; }
.scan-link::before {
  content: "";
  position: absolute;
  left: 0; right: 0; top: 50%;
  height: 1px;
  background: repeating-linear-gradient(90deg, rgba(34, 211, 238, .6) 0 6px, transparent 6px 12px);
}
.scan-link::after {
  content: "";
  position: absolute;
  top: 50%; left: 0;
  width: 7px; height: 7px;
  margin-top: -3.5px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 12px var(--cyan);
  animation: scanTravel 2.4s ease-in-out infinite;
}
@keyframes scanTravel {
  0% { left: 0; opacity: 0; }
  20% { opacity: 1; }
  80% { opacity: 1; }
  100% { left: calc(100% - 7px); opacity: 0; }
}
.scan-link em {
  position: absolute;
  top: 18px; left: 50%;
  transform: translateX(-50%);
  padding: 3px 9px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(10, 12, 20, .92);
  font-style: normal;
  font-family: var(--mono);
  font-size: 10.5px;
  color: var(--cyan);
  white-space: nowrap;
}

.pair-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
  margin-top: 34px;
  padding-top: 24px;
  border-top: 1px dashed var(--line-soft);
}
.pair-steps li { display: flex; align-items: center; gap: 10px; font-size: 13.5px; color: var(--text-2); }
.pair-steps b {
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  width: 26px; height: 26px;
  border-radius: 9px;
  font-size: 13px;
  font-family: var(--mono);
  color: var(--cyan);
  background: rgba(34, 211, 238, .1);
  border: 1px solid rgba(34, 211, 238, .3);
}

/* ---------- 9. 图卡（稿件导入 / 随手可调） ---------- */
.tune-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(258px, 1fr)); gap: 18px; }
.tune-card { padding: 22px; transition: transform .3s cubic-bezier(.2, .8, .2, 1), border-color .3s; }
.tune-card:hover { transform: translateY(-5px); border-color: rgba(34, 211, 238, .34); }
.tune-visual {
  position: relative;
  height: 84px;
  margin-bottom: 16px;
  border-radius: 12px;
  border: 1px solid var(--line-soft);
  background: linear-gradient(180deg, #080a11, #0b0d16);
  overflow: hidden;
}
.tune-head { display: flex; align-items: center; gap: 12px; margin-bottom: 10px; }
.tune-head b { font-size: 15.5px; }
.tune-card p { margin: 0; font-size: 13.7px; color: var(--text-2); }

/* 稿件导入：文件卡 */
.v-doc { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; gap: 10px; }
.v-doc span {
  padding: 8px 12px;
  border-radius: 9px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, .04);
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--text-2);
}.v-doc { gap: 8px; }
.v-doc span { padding: 8px 10px; }
.v-doc span:last-child { border-color: rgba(34, 211, 238, .5); background: rgba(34, 211, 238, .09); color: #fff; }
/* 稿件导入：编码 */
.v-code { position: absolute; inset: 0; display: grid; place-items: center; font-family: var(--mono); font-size: 11px; letter-spacing: .06em; color: var(--cyan); }
/* 稿件导入：改稿同步 */
.v-sync { position: absolute; inset: 0; }
.v-sync-a, .v-sync-b {
  position: absolute;
  top: 22px; bottom: 22px;
  width: 34%;
  border-radius: 8px;
  border: 1px solid rgba(34, 211, 238, .45);
  background: rgba(34, 211, 238, .07);
}
.v-sync-a { left: 14%; }
.v-sync-b { right: 14%; border-color: rgba(139, 92, 246, .5); background: rgba(139, 92, 246, .08); }

/* 速度：滑块 */
.v-speed {
  position: absolute;
  left: 20px; right: 20px; top: 50%;
  height: 6px;
  border-radius: 999px;
  background: rgba(255, 255, 255, .09);
}
.v-speed::before { content: ""; position: absolute; inset: 0 45% 0 0; border-radius: 999px; background: var(--grad); }
.v-speed::after {
  content: "";
  position: absolute;
  left: 55%; top: 50%;
  width: 18px; height: 18px;
  margin: -9px 0 0 -9px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 0 12px rgba(139, 92, 246, .9);
}
/* 边距：两侧内缩 */
.v-margin { position: absolute; inset: 18px 24px; border-radius: 10px; border: 1px solid var(--line); }
.v-margin::before, .v-margin::after {
  content: "";
  position: absolute;
  top: 0; bottom: 0;
  border-left: 1px dashed rgba(34, 211, 238, .75);
}
.v-margin::before { left: 20%; }
.v-margin::after { right: 20%; }
.v-margin span { position: absolute; inset: 0; background: repeating-linear-gradient(180deg, rgba(255, 255, 255, .12) 0 2px, transparent 2px 12px); }
/* 字号：大小对比 */
.v-font { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; gap: 18px; }
.v-font span { font-weight: 800; color: var(--text-3); font-size: 17px; }
.v-font span.big { font-size: 34px; color: #fff; }

/* ---------- 9. 两屏同频 ---------- */
.fb-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 22px; align-items: stretch; }
.fb-panel { padding: 22px; display: flex; flex-direction: column; }
.fb-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 16px; font-size: 13px; font-family: var(--mono); color: var(--text-3); }
.fb-tag { font-family: var(--font); font-size: 11px; padding: 3px 10px; border-radius: 999px; border: 1px solid var(--line); background: rgba(255, 255, 255, .04); color: var(--text-2); }
.fb-tag-live { color: #06251f; font-weight: 800; border-color: transparent; background: linear-gradient(120deg, var(--lime), var(--cyan)); }
.fb-body {
  position: relative;
  flex: 1;
  padding: 22px 18px;
  border-radius: 14px;
  border: 1px solid var(--line-soft);
  background: linear-gradient(180deg, #080a11, #0b0d16);
  overflow: hidden;
}
.fb-lines { display: grid; gap: 12px; }
.fb-lines p { margin: 0; font-size: 14.5px; line-height: 1.5; color: rgba(255, 255, 255, .26); }
.fb-lines p.on { color: #fff; }
.fb-range {
  position: absolute;
  left: 10px; right: 10px;
  top: 22%;
  height: 40%;
  border: 1px dashed rgba(34, 211, 238, .6);
  border-radius: 12px;
  background: rgba(34, 211, 238, .07);
  animation: fbTravel 9s ease-in-out infinite alternate;
}
.fb-range span { position: absolute; top: -10px; left: 10px; font-size: 10.5px; font-family: var(--mono); color: var(--cyan); background: #0a0c14; padding: 0 6px; border-radius: 4px; }
@keyframes fbTravel { from { top: 16%; } to { top: 26%; } }
.fb-display { display: grid; align-content: center; gap: 16px; text-align: center; }
.fb-display p { margin: 0; font-size: 15.5px; font-weight: 700; color: rgba(255, 255, 255, .48); }
.fb-display p.big { font-size: 20px; color: #fff; text-shadow: 0 0 22px rgba(34, 211, 238, .5); }
.fb-cap { margin: 14px 0 0; font-size: 12px; color: var(--text-3); font-style: italic; }

/* ---------- 10. 声随 ---------- */
.ai-wrap { display: grid; gap: 28px; }
.pipe { display: flex; flex-wrap: wrap; align-items: stretch; justify-content: center; gap: 12px; }
.pipe-node {
  flex: 1 1 150px;
  max-width: 208px;
  padding: 22px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: var(--panel);
  text-align: center;
  transition: transform .3s, border-color .3s;
}
.pipe-node:hover { transform: translateY(-4px); border-color: rgba(139, 92, 246, .45); }
.pipe-node .ico-badge { margin: 0 auto 12px; }
.pipe-node b { display: block; font-size: 14.5px; color: #fff; }
.pipe-node i { display: block; font-style: normal; font-size: 12px; color: var(--text-3); margin-top: 3px; }
.pipe-arrow { align-self: center; width: 18px; height: 1px; background: linear-gradient(90deg, rgba(139, 92, 246, .2), rgba(139, 92, 246, .9)); position: relative; }
.pipe-arrow::after {
  content: "";
  position: absolute;
  right: 0; top: 50%;
  width: 6px; height: 6px;
  margin-top: -3px;
  border-top: 1px solid rgba(139, 92, 246, .9);
  border-right: 1px solid rgba(139, 92, 246, .9);
  transform: rotate(45deg);
}

.wave-card { padding: 22px; }
.wave-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 14px; font-size: 13px; color: var(--text-3); font-family: var(--mono); }
#waveCanvas { width: 100%; height: 150px; border-radius: 14px; background: linear-gradient(180deg, #080a11, #0b0d16); border: 1px solid var(--line-soft); }
.wave-rows { display: grid; gap: 10px; margin-top: 16px; }
.wave-rows div { display: flex; justify-content: space-between; gap: 14px; font-size: 13px; padding-bottom: 9px; border-bottom: 1px solid var(--line-soft); }
.wave-rows div:last-child { border-bottom: 0; padding-bottom: 0; }
.wave-rows span { color: var(--text-3); font-family: var(--mono); font-size: 12px; }
.wave-rows b { color: #fff; font-weight: 650; text-align: right; }

/* ---------- 11. 对比 ---------- */
.table-wrap { padding: 8px; overflow-x: auto; }
.cmp-table { width: 100%; border-collapse: collapse; min-width: 560px; }
.cmp-table th, .cmp-table td { text-align: left; padding: 15px 20px; font-size: 14.2px; border-bottom: 1px solid var(--line-soft); }
.cmp-table thead th { font-size: 12.5px; font-family: var(--mono); letter-spacing: .1em; color: var(--text-3); text-transform: uppercase; border-bottom-color: var(--line); }
.cmp-table tbody tr { transition: background .25s; }
.cmp-table tbody tr:hover { background: rgba(255, 255, 255, .03); }
.cmp-table tbody tr:last-child td { border-bottom: 0; }
.cmp-table td:first-child { color: var(--text-3); font-size: 13px; white-space: nowrap; }
.cmp-table td:nth-child(2) { color: var(--text-3); }
.cmp-table td:nth-child(2)::before { content: "✕ "; color: #6b7280; }
.cmp-table .col-us { color: #fff; background: linear-gradient(90deg, rgba(34, 211, 238, .07), rgba(139, 92, 246, .05)); }
.cmp-table .col-us::before { content: "✓ "; color: var(--lime); font-weight: 800; }
.cmp-table thead th:nth-child(2)::before, .cmp-table thead .col-us::before { content: ""; }
.cmp-table thead .col-us { color: var(--cyan); }

/* ---------- 12. 网页与下载 ---------- */
/* 设备墙：同一个浏览器窗口出现在各种设备上 —— 画面表意，不写说明 */
.device-row {
  --u: 1;
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: center;
  gap: 30px;
  padding: 26px 0 34px;
}
.device-row::before {
  content: "";
  position: absolute;
  left: 50%; top: 52%;
  width: min(880px, 96%);
  height: 240px;
  transform: translate(-50%, -50%);
  background: radial-gradient(closest-side, rgba(34, 211, 238, .16), rgba(139, 92, 246, .10) 55%, transparent 75%);
  pointer-events: none;
  z-index: -1;
}
.dv-item { margin: 0; display: flex; flex-direction: column; align-items: center; gap: 10px; }
.dv-item figcaption {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--text-3);
}
.dv {
  position: relative;
  flex: 0 0 auto;
  padding: calc(5px * var(--u));
  border-radius: calc(13px * var(--u));
  background: linear-gradient(160deg, #262b3b, #0c0e16 45%, #1b2030);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .09), 0 26px 50px -30px rgba(139, 92, 246, .95);
}
.dv-screen {
  display: flex;
  flex-direction: column;
  border-radius: calc(9px * var(--u));
  background: linear-gradient(180deg, #0d1018, #07080e);
  border: 1px solid rgba(255, 255, 255, .06);
  overflow: hidden;
}
/* 浏览器窗口：所有设备上都是同一个 */
.dv-chrome {
  display: flex;
  align-items: center;
  gap: calc(3px * var(--u));
  padding: calc(5px * var(--u)) calc(6px * var(--u));
  border-bottom: 1px solid rgba(255, 255, 255, .06);
  background: rgba(255, 255, 255, .03);
}
.dv-chrome i { width: calc(4px * var(--u)); height: calc(4px * var(--u)); border-radius: 50%; background: rgba(255, 255, 255, .22); }
.dv-chrome em { flex: 1; height: calc(5px * var(--u)); margin-left: calc(3px * var(--u)); border-radius: 999px; background: rgba(255, 255, 255, .09); }
.dv-lines { display: grid; gap: calc(6px * var(--u)); padding: calc(9px * var(--u)) calc(8px * var(--u)); }
.dv-lines span { display: block; height: calc(5px * var(--u)); border-radius: 999px; background: rgba(255, 255, 255, .13); }
.dv-lines span.short { width: 62%; }
.dv-lines span.on {
  background: var(--grad);
  box-shadow: 0 0 calc(10px * var(--u)) rgba(34, 211, 238, .55);
  animation: dvScan 3.4s ease-in-out infinite;
}
@keyframes dvScan { 0%, 100% { opacity: 1; } 50% { opacity: .45; } }

/* 设备尺寸：手机最小，数字大屏最大 */
.dv-phone .dv-screen { width: calc(56px * var(--u)); height: calc(104px * var(--u)); }
.dv-tablet .dv-screen { width: calc(96px * var(--u)); height: calc(126px * var(--u)); }
.dv-laptop .dv-screen { width: calc(158px * var(--u)); height: calc(96px * var(--u)); }
.dv-desktop .dv-screen { width: calc(178px * var(--u)); height: calc(106px * var(--u)); }
.dv-signage .dv-screen { width: calc(224px * var(--u)); height: calc(130px * var(--u)); }
.dv-base {
  display: block;
  height: calc(7px * var(--u));
  margin: calc(4px * var(--u)) calc(-12px * var(--u)) 0;
  border-radius: 0 0 calc(7px * var(--u)) calc(7px * var(--u));
  background: linear-gradient(180deg, #2b3142, #171b26);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .07);
}
.dv-stand {
  display: block;
  width: 32%;
  height: calc(16px * var(--u));
  margin: calc(5px * var(--u)) auto 0;
  border-radius: calc(3px * var(--u));
  background: linear-gradient(180deg, #2b3142, #141821);
}

.web-actions { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; }
.dl-card { padding: 40px 32px; text-align: center; }
.dl-main { display: flex; flex-wrap: wrap; gap: 13px; justify-content: center; }
.spec-strip {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-top: 34px;
  padding-top: 28px;
  border-top: 1px solid var(--line-soft);
}
.spec-strip li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: 999px;
  background: rgba(255, 255, 255, .035);
  border: 1px solid var(--line-soft);
  font-size: 13px;
  color: var(--text-2);
}
.spec-strip li::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 8px var(--cyan); }

.dl-consult { margin: 16px 0 0; text-align: center; }
.consult-link {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 9px 18px; border-radius: 999px;
  font-size: 14.5px; font-weight: 600;
  color: var(--text-2);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, .03);
  transition: color .2s, border-color .2s, background .2s;
}
.consult-link .ico { width: 17px; height: 17px; }
.consult-link:hover { color: #fff; border-color: rgba(34, 211, 238, .55); background: rgba(34, 211, 238, .08); }

.contact-box {
  margin-top: 26px;
  padding: 22px;
  border-radius: var(--radius-sm);
  border: 1px dashed var(--line);
  background: rgba(255, 255, 255, .03);
  text-align: left;
  animation: fadeUp .4s ease;
}
.contact-box h3 { font-size: 1rem; margin-bottom: 14px; }
.contact-rows { display: grid; gap: 10px; margin-bottom: 16px; }
.contact-rows div { display: flex; gap: 12px; font-size: 14px; }
.contact-rows span { color: var(--text-3); min-width: 78px; }
.contact-rows b { color: #fff; font-family: var(--mono); word-break: break-all; }
@keyframes fadeUp { from { opacity: 0; transform: translateY(-6px); } }

/* ---------- 13. 页脚与浮层 ---------- */
.footer { position: relative; z-index: 3; border-top: 1px solid var(--line-soft); background: rgba(4, 5, 9, .8); padding: 52px 0 42px; }
.footer-inner { display: grid; gap: 26px; }
.footer-brand { display: flex; gap: 14px; align-items: flex-start; }
.footer-brand strong { display: block; font-size: 15.5px; }
.footer-brand p { font-size: 13.5px; color: var(--text-3); margin: 4px 0 0; }
.footer-links { display: flex; flex-wrap: wrap; gap: 12px 24px; font-size: 14px; }
.footer-links a { color: var(--text-2); transition: color .2s; }
.footer-links a:hover { color: var(--cyan); }
.footer-legal { font-size: 12.5px; color: var(--text-3); margin: 0; max-width: 62em; line-height: 1.85; }
.footer-legal a { color: inherit; text-decoration: none; border-bottom: 1px solid rgba(255, 255, 255, .18); transition: color .2s, border-color .2s; }
.footer-legal a:hover { color: var(--cyan); border-color: rgba(34, 211, 238, .5); }

.to-top {
  position: fixed;
  right: 26px; bottom: 26px;
  z-index: 90;
  width: 46px; height: 46px;
  display: grid; place-items: center;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: rgba(10, 12, 20, .82);
  backdrop-filter: blur(12px);
  color: var(--text);
  cursor: pointer;
  opacity: 0;
  transform: translateY(14px);
  pointer-events: none;
  transition: opacity .3s, transform .3s, border-color .3s;
}
.to-top.show { opacity: 1; transform: none; pointer-events: auto; }
.to-top:hover { border-color: var(--cyan); color: var(--cyan); }

.toast {
  position: fixed;
  left: 50%; bottom: 34px;
  transform: translate(-50%, 24px);
  z-index: 130;
  padding: 12px 22px;
  border-radius: 999px;
  background: rgba(12, 14, 22, .95);
  border: 1px solid var(--line);
  color: #fff;
  font-size: 14px;
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transition: opacity .3s, transform .3s;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* ---------- 14. 响应式 ---------- */
/* ---------- 新增：语音控制 / 静音不计时长（VAD）视觉 ---------- */
.voice-extra { margin-top: 18px; }

.v-vad, .v-vad2, .v-cloud, .v-config, .v-voicectl { position: absolute; inset: 0; }

.v-vad { display: flex; align-items: center; justify-content: center; gap: 7px; }
.v-vad i { width: 5px; border-radius: 999px; background: var(--cyan); height: 24px; }
.v-vad i:nth-child(1), .v-vad i:nth-child(9) { height: 14px; }
.v-vad i:nth-child(2), .v-vad i:nth-child(8) { height: 38px; }
.v-vad i:nth-child(3), .v-vad i:nth-child(7) { height: 30px; }
.v-vad i.silent { height: 7px; background: rgba(255, 255, 255, .2); }

.v-vad2 { display: flex; align-items: center; justify-content: center; gap: 7px; }
.v-vad2 i { width: 5px; border-radius: 999px; background: rgba(255, 255, 255, .42); height: 30px; }
.v-vad2 i:nth-child(1), .v-vad2 i:nth-child(9) { height: 16px; }
.v-vad2 i:nth-child(2), .v-vad2 i:nth-child(8) { height: 24px; }
.v-vad2 i.low { height: 6px; background: rgba(255, 255, 255, .16); }
.v-vad2::after {
  content: ""; position: absolute; left: 14%; right: 14%; top: 50%;
  border-top: 1px dashed rgba(34, 211, 238, .5);
}

.v-voicectl { display: flex; align-items: center; justify-content: center; gap: 13px; }
.v-voicectl .mic { position: relative; width: 15px; height: 24px; border-radius: 9px; border: 2px solid var(--text-2); }
.v-voicectl .mic::after {
  content: ""; position: absolute; left: 50%; bottom: -9px; width: 13px; height: 8px; margin-left: -6.5px;
  border: 2px solid var(--text-2); border-top: 0; border-radius: 0 0 8px 8px;
}
.v-voicectl .wire { width: 32px; height: 2px; background: linear-gradient(90deg, rgba(34, 211, 238, .2), var(--cyan)); }
.v-voicectl .play { width: 0; height: 0; border-left: 14px solid var(--cyan); border-top: 9px solid transparent; border-bottom: 9px solid transparent; }

.v-cloud { display: grid; grid-template-columns: repeat(5, 1fr); gap: 7px; padding: 16px 18px; align-content: center; }
.v-cloud i { height: 20px; border-radius: 6px; border: 1px solid var(--line); background: rgba(255, 255, 255, .05); }
.v-cloud i:nth-child(3n) { border-color: rgba(34, 211, 238, .45); background: rgba(34, 211, 238, .1); }

.v-config { display: flex; align-items: center; justify-content: center; gap: 9px; }
.v-config span {
  font-family: var(--mono); font-size: 11.5px; color: var(--text-2);
  padding: 6px 11px; border-radius: 999px; border: 1px solid var(--line); background: rgba(255, 255, 255, .04);
}

/* ---------- 新增：多屏显示（一个控制端 → 多块显示端） ---------- */
.multi-stage {
  display: grid; grid-template-columns: minmax(158px, 186px) 46px 1fr;
  align-items: center; gap: 16px; padding: 28px 24px 30px;
}
.multi-ctl { position: relative; padding: 14px 14px 16px; border-radius: 14px; border: 1px solid rgba(34, 211, 238, .42); background: rgba(34, 211, 238, .07); }
.mc-bar { display: flex; gap: 5px; margin-bottom: 11px; }
.mc-bar span { width: 7px; height: 7px; border-radius: 50%; background: rgba(255, 255, 255, .25); }
.mc-on { margin: 0 0 6px; font-size: 12.5px; font-weight: 700; color: #fff; }
.mc-dim { margin: 0 0 4px; font-size: 11.5px; color: var(--text-3); }
.mc-tag {
  position: absolute; left: 14px; bottom: -11px; font-family: var(--mono); font-size: 10.5px;
  color: var(--cyan); background: var(--bg-soft); padding: 2px 9px; border-radius: 999px; border: 1px solid rgba(34, 211, 238, .42);
}
.multi-fan { display: flex; align-items: center; justify-content: center; gap: 9px; }
.multi-fan i { width: 2px; height: 44px; border-radius: 2px; background: linear-gradient(180deg, rgba(34, 211, 238, .15), rgba(34, 211, 238, .8)); animation: mfPulse 2.6s ease-in-out infinite; }
.multi-fan i:nth-child(2) { animation-delay: .22s; }
.multi-fan i:nth-child(3) { animation-delay: .44s; }
@keyframes mfPulse { 0%, 100% { opacity: .4; } 50% { opacity: 1; } }

.multi-screens { display: grid; grid-template-columns: repeat(3, 1fr); gap: 13px; }
.ms { --u: .9; margin: 0; border: 1px solid var(--line); border-radius: 12px; background: rgba(255, 255, 255, .03); overflow: hidden; }
.ms-bar { display: flex; gap: 4px; padding: 8px 10px; border-bottom: 1px solid var(--line-soft); }
.ms-bar span { width: 6px; height: 6px; border-radius: 50%; background: rgba(255, 255, 255, .25); }
.ms figcaption { padding: 8px 10px 10px; font-family: var(--mono); font-size: 11px; color: var(--text-3); }

@media (max-width: 1024px) {
  .multi-stage { grid-template-columns: 1fr; gap: 20px; }
  .multi-fan { gap: 14px; }
  .multi-fan i { width: 44px; height: 2px; background: linear-gradient(90deg, rgba(34, 211, 238, .15), rgba(34, 211, 238, .8)); }
}
@media (max-width: 720px) {
  .multi-screens { grid-template-columns: 1fr; }
  .multi-stage { padding: 22px 16px 24px; }
  .v-cloud { padding: 14px; gap: 6px; }
}

/* ---------- 音量表：实时电平 + 红线阈值（按 App 实现还原） ---------- */
.lvl-wrap { margin-top: 16px; padding: 14px 14px 12px; border-radius: 12px; border: 1px solid var(--line-soft); background: rgba(255, 255, 255, .02); }
.lvl { position: relative; height: 6px; border-radius: 999px; background: rgba(255, 255, 255, .07); overflow: hidden; }
.lvl-fill {
  position: absolute; inset: 0 auto 0 0; width: 26%; border-radius: 999px;
  background: linear-gradient(90deg, #34d399, #22d3ee);
  animation: lvlSweep 4.6s cubic-bezier(.45, .05, .25, 1) infinite;
}
.lvl-thr { position: absolute; top: -4px; bottom: -4px; left: 55%; width: 2px; background: #f87171; box-shadow: 0 0 8px rgba(248, 113, 113, .8); }
@keyframes lvlSweep {
  0%, 6% { width: 24%; background: linear-gradient(90deg, #34d399, #22d3ee); }
  28%, 50% { width: 82%; background: linear-gradient(90deg, #34d399, #a7f3d0); }
  58%, 78% { width: 20%; background: linear-gradient(90deg, #34d399, #22d3ee); opacity: .55; }
  92%, 100% { width: 24%; opacity: 1; }
}
.lvl-legend { display: flex; flex-wrap: wrap; gap: 8px 18px; margin-top: 12px; font-size: 11.5px; color: var(--text-3); }
.lvl-legend i { display: inline-block; width: 8px; height: 8px; border-radius: 50%; margin-right: 6px; vertical-align: 1px; }
.dot-live { background: linear-gradient(90deg, #34d399, #22d3ee); }
.dot-thr { background: #f87171; box-shadow: 0 0 6px rgba(248, 113, 113, .75); }
.lvl-read { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 18px; margin-top: 10px; font-size: 12.5px; color: var(--text-2); }
.lvl-read b { color: #fff; font-family: var(--mono); }
.lvl-now { display: inline-grid; min-width: 3.4em; text-align: left; }
.lvl-now > * { grid-area: 1 / 1; }
.lvl-now-a { animation: lvlSpeakShow 4.6s cubic-bezier(.45, .05, .25, 1) infinite; }
.lvl-now-b { animation: lvlSilentShow 4.6s cubic-bezier(.45, .05, .25, 1) infinite; }
@keyframes lvlSpeakShow { 0%, 6% { opacity: 0; } 14%, 50% { opacity: 1; } 58%, 100% { opacity: 0; } }
@keyframes lvlSilentShow { 0%, 6% { opacity: 1; } 14%, 50% { opacity: 0; } 58%, 100% { opacity: 1; } }
.lvl-state { display: inline-flex; align-items: center; gap: 7px; font-size: 12px; }
.st-wrap { display: inline-grid; min-width: 12.5em; }
.st-wrap > * { grid-area: 1 / 1; }
.lvl-state i { width: 7px; height: 7px; border-radius: 50%; background: var(--lime); box-shadow: 0 0 8px rgba(163, 230, 53, .8); animation: lvlDot 4.6s cubic-bezier(.45, .05, .25, 1) infinite; }
@keyframes lvlDot {
  0%, 6% { background: rgba(255, 255, 255, .3); box-shadow: none; }
  14%, 50% { background: var(--lime); box-shadow: 0 0 8px rgba(163, 230, 53, .8); }
  58%, 100% { background: rgba(255, 255, 255, .3); box-shadow: none; }
}
.lvl-state em { font-style: normal; white-space: nowrap; }
.lvl-state .st-a { animation: lvlSpeakShow 4.6s cubic-bezier(.45, .05, .25, 1) infinite; color: var(--lime); }
.lvl-state .st-b { animation: lvlSilentShow 4.6s cubic-bezier(.45, .05, .25, 1) infinite; color: var(--text-3); }
.lvl-cap { margin: 10px 0 0; font-size: 12.5px; color: var(--text-3); }

/* ---------- 高光突出：对齐到的字在两端同时亮 ---------- */
.hl-card { margin-top: 18px; padding: 22px 22px 18px; }
.hl-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 16px; font-size: 13.5px; color: var(--text-2); }
.hl-demo { padding: 16px 18px; border-radius: 12px; border: 1px solid var(--line-soft); background: linear-gradient(180deg, #080a11, #0b0d16); }
.hl-line { position: relative; margin: 0 0 8px; font-size: 17px; letter-spacing: .06em; }
.hl-line:last-child { margin-bottom: 0; }
.hl-txt { color: #e8ebf2; }
.hl-txt.dim { color: rgba(232, 235, 242, .34); }
.hl-block {
  position: absolute; left: 0; top: -2px; width: 2em; height: 1.5em; border-radius: 3px;
  background: rgba(124, 58, 237, .42);
  animation: hlStep 3.6s steps(5, end) infinite;
}
.hl-line:nth-child(2) .hl-block { animation-delay: .3s; }
.hl-line:nth-child(3) .hl-block { animation-delay: .6s; }
@keyframes hlStep { 0% { transform: translateX(0); } 100% { transform: translateX(10em); } }
.hl-notes { margin: 16px 0 0; padding: 0; list-style: none; display: grid; gap: 9px; }
.hl-notes li { position: relative; padding-left: 16px; font-size: 13.5px; color: var(--text-2); }
.hl-notes li::before { content: ""; position: absolute; left: 0; top: .55em; width: 6px; height: 6px; border-radius: 50%; background: var(--violet); }
.hl-notes b { color: #fff; }

/* ---------- 同音字（拼音对齐）视觉 ---------- */
.v-homophone { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; gap: 14px; font-size: 26px; font-weight: 800; color: var(--text-3); }
.v-homophone .same { color: #fff; position: relative; }
.v-homophone .same::after { content: ""; position: absolute; left: -3px; right: -3px; bottom: -2px; height: 4px; border-radius: 3px; background: rgba(124, 58, 237, .75); }

@media (max-width: 720px) {
  .hl-line { font-size: 15px; }
  .hl-notes li { font-size: 13px; }
  .lvl-state { min-width: 11em; }
}

@media (max-width: 1180px) {
  .nav-links {
    position: fixed;
    top: var(--nav-h);
    left: 12px; right: 12px;
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    padding: 14px;
    border-radius: var(--radius);
    border: 1px solid var(--line);
    background: rgba(8, 10, 16, .96);
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow);
    opacity: 0;
    transform: translateY(-12px);
    pointer-events: none;
    transition: opacity .28s, transform .28s;
  }
  .nav-links.open { opacity: 1; transform: none; pointer-events: auto; }
  .nav-links a { width: 100%; padding: 11px 6px; font-size: 15px; }
  .nav-links a::after { display: none; }
  .nav-toggle { display: flex; }
}

@media (max-width: 1320px) {
  /* 视口不够宽时不再出框，设备收进卡片内 */
  .dev-tablet { margin-left: 0; }
}

@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; gap: 46px; }
  .hero-visual { max-width: 520px; }
  .hero-screen { transform: none; }
  .shift-grid { grid-template-columns: 1fr; }


  .stage { gap: 26px; }
  .dev-tablet { width: 330px; }
  .device-row { --u: .85; gap: 22px; }
  .fb-grid { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .section { padding: 66px 0; }
  /* 变革动画：小屏标签缩小，避免拥挤 */
  .shift-card { padding: 16px 14px; }
  .shift-scene .s-tag, .shift-scene .s-warn { font-size: 12px; }
  .shift-scene .s-badge-t { font-size: 12.5px; }
  .container { padding: 0 18px; }
  .hero { min-height: auto; padding-bottom: 58px; }
  .hero-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .sec-head { margin-bottom: 34px; }

  /* 设备改为竖排：平板在上、手机在下，连线转成竖向 */
  .stage { grid-template-columns: 1fr; justify-items: center; gap: 18px; }
  .dev-tablet { width: 330px; }
  .dev-phone { width: 146px; }
  .scan-link { width: 20px; min-width: 0; height: 68px; }
  /* 小屏平板屏幕空间有限：缩小二维码并隐藏底部小字，避免文字被裁切 */
  .t-qr { width: 86px; height: 86px; }
  .t-lines p { font-size: 10px; }
  .t-cap { display: none; }
  .scan-link::before {
    left: 50%; right: auto; top: 0; bottom: 0;
    width: 1px; height: auto;
    background: repeating-linear-gradient(180deg, rgba(34, 211, 238, .6) 0 6px, transparent 6px 12px);
  }
  .scan-link::after { top: 0; left: 50%; margin: -3.5px 0 0 -3.5px; animation: scanTravelV 2.4s ease-in-out infinite; }
  .scan-link em { top: 50%; transform: translate(-50%, -50%); }
  /* 设备墙：小屏整体等比缩小，必要时自动换行 */
  .device-row { --u: .72; gap: 16px; row-gap: 22px; padding: 18px 0 26px; }
  .device-row::before { height: 200px; }

  .pair-steps { grid-template-columns: 1fr; }
  .frame-card { padding: 24px 18px; }
  .float-chip { display: none; }
  .cursor-glow { display: none; }
  .marquee-track { font-size: 12.5px; gap: 18px; }
  .dl-card { padding: 30px 18px; }
  .to-top { right: 16px; bottom: 16px; }
  .pipe-arrow { display: none; }

  /* 对比表在小屏改为卡片式堆叠 */
  .table-wrap { padding: 6px 14px; overflow-x: visible; }
  .cmp-table { min-width: 0; display: block; }
  .cmp-table thead { display: none; }
  .cmp-table tbody { display: block; }
  .cmp-table tbody tr { display: block; padding: 13px 0; border-bottom: 1px solid var(--line-soft); }
  .cmp-table tbody tr:last-child { border-bottom: 0; }
  .cmp-table td { display: block; padding: 5px 0; border-bottom: 0; font-size: 13.6px; }
  .cmp-table td:first-child { font-family: var(--mono); font-size: 11.5px; letter-spacing: .14em; color: var(--cyan); padding-bottom: 8px; }
  .cmp-table td[data-label]::before { content: attr(data-label) "："; color: var(--text-3); font-size: 12px; margin-right: 4px; }
  .cmp-table td:nth-child(2)::before { content: attr(data-label) "：" "✕ "; }
  .cmp-table td.col-us { background: none; border-left: 2px solid rgba(34, 211, 238, .5); padding-left: 12px; margin-top: 4px; }
  .cmp-table td.col-us::before { content: attr(data-label) "：" "✓ "; color: var(--text-3); font-weight: 400; }
}

@keyframes scanTravelV {
  0% { top: 0; opacity: 0; }
  20% { opacity: 1; }
  80% { opacity: 1; }
  100% { top: calc(100% - 7px); opacity: 0; }
}

@media (max-width: 460px) {
  .hero-brand { font-size: 2.9rem; }
  .hero-cta .btn { width: 100%; }
  .btn-lg, .btn-xl { padding: 14px 20px; font-size: 15px; }
  .dev-tablet { width: 268px; }
  .dev-phone { width: 132px; }
  .device-row { --u: .56; gap: 14px; row-gap: 18px; }
  .dv-item figcaption { font-size: 10.5px; }
}

/* ---------- 15. 无障碍 ---------- */
:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; border-radius: 6px; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  /* 变革动画：停掉动画，静态保留"手指入画"这一帧 */
  .shift-scene * { animation: none !important; }
  .shift-scene .s-vf { stroke: #f87171 !important; }
  .shift-scene .s-cone { stroke: rgba(248, 113, 113, .55) !important; }
  .shift-scene .s-warn, .shift-scene .s-finger-echo, .shift-scene .s-block { opacity: 1 !important; }
  .shift-scene .s-fore { transform: rotate(-13deg); }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  .reveal { opacity: 1; transform: none; }
  .marquee-track { animation: none; }
}

@media print {
  .nav, .to-top, .cursor-glow, .scroll-progress, .bg-noise, .hero-canvas, .marquee { display: none !important; }
  body { background: #fff; color: #000; }
}