/* ==================================================
   地听者官网 · 企业级清爽科技风格
   设计参考：ESET 官网设计语言（白底 + 品牌青蓝 + 深色页脚）
   ================================================== */
:root {
  --blue: #0072ce;
  --blue-dark: #0059a3;
  --cyan: #00a0df;
  --cyan-soft: #e6f4fb;
  --ink: #1d252c;
  --body: #4a545e;
  --muted: #6e7881;
  --bg: #ffffff;
  --bg-alt: #f4f7fa;
  --line: #e3e9ef;
  --radius: 10px;
  --shadow-sm: 0 1px 3px rgba(29, 37, 44, .06);
  --shadow: 0 8px 24px rgba(29, 37, 44, .08);
  --shadow-lg: 0 16px 40px rgba(29, 37, 44, .14);
  /* 毛玻璃 */
  --glass: rgba(255, 255, 255, .58);
  --glass-strong: rgba(255, 255, 255, .78);
  --glass-line: rgba(255, 255, 255, .78);
  --glass-shadow: 0 10px 34px rgba(29, 37, 44, .09), inset 0 1px 0 rgba(255, 255, 255, .95);
  --blur: blur(20px) saturate(180%);
  --ease-out: cubic-bezier(.22, .61, .36, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--bg); }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, "Segoe UI", sans-serif;
  color: var(--body);
  background: transparent;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

/* ---------- 环境光晕：为毛玻璃提供可模糊的底色 ---------- */
.aurora {
  position: fixed; inset: 0; z-index: -1;
  overflow: hidden; pointer-events: none;
}
.aurora i {
  position: absolute; display: block; border-radius: 50%;
  filter: blur(72px); will-change: transform;
}
.aurora i:nth-child(1) {
  width: 46vw; height: 46vw; top: -14vw; left: -8vw;
  background: radial-gradient(circle, rgba(0, 160, 223, .42), rgba(0, 160, 223, 0) 68%);
  animation: auroraDrift 26s ease-in-out infinite alternate;
}
.aurora i:nth-child(2) {
  width: 40vw; height: 40vw; top: 22vh; right: -12vw;
  background: radial-gradient(circle, rgba(63, 125, 255, .30), rgba(63, 125, 255, 0) 68%);
  animation: auroraDrift 32s ease-in-out infinite alternate-reverse;
}
.aurora i:nth-child(3) {
  width: 38vw; height: 38vw; bottom: -10vw; left: 24vw;
  background: radial-gradient(circle, rgba(0, 200, 190, .26), rgba(0, 200, 190, 0) 68%);
  animation: auroraDrift 38s ease-in-out infinite alternate;
}
@keyframes auroraDrift {
  0%   { transform: translate3d(0, 0, 0); }
  50%  { transform: translate3d(5vw, 6vh, 0); }
  100% { transform: translate3d(-4vw, -5vh, 0); }
}

/* ---------- 顶部滚动进度条 ---------- */
.scroll-progress {
  position: fixed; top: 0; left: 0; height: 3px; width: 0;
  z-index: 200; border-radius: 0 2px 2px 0;
  background: linear-gradient(90deg, var(--cyan), var(--blue) 55%, #3f7dff);
  box-shadow: 0 0 12px rgba(0, 160, 223, .55);
  transition: width .1s linear;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
.container { max-width: 1160px; margin: 0 auto; padding: 0 24px; }

/* ---------- 顶部导航 ---------- */
.navbar {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, .68);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  border-bottom: 1px solid rgba(255, 255, 255, .6);
  box-shadow: 0 1px 0 rgba(227, 233, 239, .9);
  transition: box-shadow .3s var(--ease-out), background .3s;
}
.navbar.scrolled {
  background: var(--glass-strong);
  box-shadow: 0 6px 24px rgba(29, 37, 44, .07), 0 1px 0 rgba(227, 233, 239, .9);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 74px; }
.brand { display: flex; align-items: center; gap: 12px; }
.brand-logo { height: 38px; width: auto; display: block; }
.brand-text { display: flex; flex-direction: column; line-height: 1.3; }
.brand-text strong { font-size: 17px; color: var(--ink); letter-spacing: 3px; font-weight: 700; }
.brand-text small { font-size: 10.5px; color: var(--muted); letter-spacing: 2px; }
.nav-links { display: flex; align-items: center; gap: 30px; }
.nav-links a {
  font-size: 15px; color: var(--ink); padding: 6px 0;
  position: relative; transition: color .2s;
}
.nav-links a::after {
  content: ""; position: absolute; left: 0; right: 100%; bottom: 0; height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--blue));
  border-radius: 2px; transition: right .3s var(--ease-out);
}
.nav-links a:hover { color: var(--blue); }
.nav-links a:hover::after { right: 0; }
.nav-links a.active:not(.nav-cta) { color: var(--blue); font-weight: 600; }
.nav-links a.active:not(.nav-cta)::after { right: 0; }
.nav-links a.nav-cta.active { box-shadow: 0 8px 22px rgba(0, 114, 206, .34); }
.nav-cta {
  position: relative; overflow: hidden;
  background: var(--blue); color: #fff !important; font-weight: 600;
  padding: 10px 24px !important; border-radius: 6px; transition: .25s;
}
.nav-cta::after { display: none !important; }
.nav-cta:hover { background: var(--blue-dark); box-shadow: 0 8px 22px rgba(0, 114, 206, .34); transform: translateY(-1px); }
.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--ink); margin: 5px 0; transition: .3s; }

/* ---------- 首屏 ---------- */
.hero {
  position: relative; overflow: hidden;
  background:
    radial-gradient(900px 460px at 88% 0%, rgba(0, 160, 223, .13), transparent 62%),
    linear-gradient(180deg, rgba(248, 251, 254, .55) 0%, rgba(255, 255, 255, .2) 100%);
  border-bottom: 1px solid var(--line);
}
/* 首屏网格底纹（缓慢漂移） */
.hero::before {
  content: ""; position: absolute; inset: -40% -10%;
  background-image:
    linear-gradient(rgba(0, 114, 206, .055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 114, 206, .055) 1px, transparent 1px);
  background-size: 54px 54px;
  mask-image: radial-gradient(120% 90% at 78% 8%, #000 0%, transparent 72%);
  -webkit-mask-image: radial-gradient(120% 90% at 78% 8%, #000 0%, transparent 72%);
  animation: gridDrift 24s linear infinite;
  pointer-events: none;
}
@keyframes gridDrift {
  from { transform: translate3d(0, 0, 0); }
  to   { transform: translate3d(-54px, -54px, 0); }
}
.hero-grid {
  position: relative; z-index: 1;
  display: grid; grid-template-columns: 1.08fr .92fr; gap: 40px;
  align-items: end; padding-top: 72px; padding-bottom: 0;
}
.hero-copy { max-width: 720px; padding-bottom: 84px; }

/* 首屏视觉：仅放大的透明底机器人图，无背景无文字 */
.hero-visual { position: relative; align-self: end; display: flex; justify-content: center; }
.hero-visual::before {
  content: ""; position: absolute; z-index: 0;
  width: 88%; aspect-ratio: 1 / 1; bottom: 6%; left: 50%;
  transform: translateX(-50%);
  background: radial-gradient(circle, rgba(0, 160, 223, .30), rgba(63, 125, 255, .12) 46%, transparent 70%);
  filter: blur(26px);
  animation: glowBreath 7s ease-in-out infinite;
}
@keyframes glowBreath {
  0%, 100% { opacity: .62; transform: translateX(-50%) scale(.96); }
  50%      { opacity: 1;   transform: translateX(-50%) scale(1.06); }
}
.hero-visual img {
  position: relative; z-index: 1;
  height: clamp(280px, 32vw, 440px); width: auto; max-width: 100%; object-fit: contain;
  display: block;
  filter: drop-shadow(0 18px 32px rgba(29, 37, 44, .13));
  animation:
    heroIn .9s var(--ease-out) .42s both,
    robotFloat 7s ease-in-out 1.4s infinite;
}
@keyframes robotFloat {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-11px); }
}
.hero-kicker {
  display: inline-block; font-size: 13.5px; font-weight: 600; color: var(--blue);
  background: var(--cyan-soft); border-radius: 40px; padding: 6px 18px; margin-bottom: 22px;
  animation: heroIn .8s var(--ease-out) both;
}
.hero h1 {
  font-size: clamp(34px, 4.4vw, 52px); line-height: 1.25;
  color: var(--ink); font-weight: 800; letter-spacing: -.5px;
  animation: heroIn .8s var(--ease-out) .1s both;
}
.hero h1 em {
  font-style: normal;
  background: linear-gradient(100deg, var(--blue) 0%, var(--cyan) 42%, #3f7dff 70%, var(--blue) 100%);
  background-size: 260% auto;
  -webkit-background-clip: text; background-clip: text;
  color: transparent;
  animation: textFlow 7s linear infinite;
}
@keyframes textFlow {
  to { background-position: 260% center; }
}
.hero-sub {
  margin-top: 22px; font-size: 16.5px; color: var(--body); max-width: 560px;
  animation: heroIn .8s var(--ease-out) .2s both;
}
.hero-sub b { color: var(--ink); font-weight: 600; }
.hero-actions {
  margin-top: 34px; display: flex; gap: 14px; flex-wrap: wrap;
  animation: heroIn .8s var(--ease-out) .3s both;
}
@keyframes heroIn {
  from { opacity: 0; transform: translateY(26px); }
  to   { opacity: 1; transform: none; }
}
.btn {
  position: relative; overflow: hidden;
  display: inline-block; padding: 14px 32px; border-radius: 6px;
  font-size: 15.5px; font-weight: 600; transition: .28s var(--ease-out);
}
/* 按钮高光扫过 */
.btn-primary::before {
  content: ""; position: absolute; top: 0; left: -60%; width: 45%; height: 100%;
  background: linear-gradient(100deg, transparent, rgba(255, 255, 255, .5), transparent);
  transform: skewX(-20deg);
  transition: left .6s var(--ease-out);
}
.btn-primary { background: var(--blue); color: #fff; box-shadow: 0 6px 16px rgba(0, 114, 206, .22); }
.btn-primary:hover {
  background: var(--blue-dark); color: #fff;
  box-shadow: 0 14px 30px rgba(0, 114, 206, .34); transform: translateY(-2px);
}
.btn-primary:hover::before { left: 130%; }
.btn-outline { border: 2px solid var(--blue); color: var(--blue); padding: 12px 30px; }
.btn-outline:hover {
  background: var(--cyan-soft); transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(0, 114, 206, .16);
}

/* ---------- 数据条 ---------- */
.stats-band {
  position: relative;
  background: rgba(244, 247, 250, .48);
  backdrop-filter: var(--blur); -webkit-backdrop-filter: var(--blur);
  border-bottom: 1px solid var(--line);
}
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; padding-top: 40px; padding-bottom: 40px; }
.stat { text-align: center; border-right: 1px solid var(--line); transition: transform .35s var(--ease-out); }
.stat:last-child { border-right: none; }
.stat:hover { transform: translateY(-3px); }
.stat strong { font-size: 34px; font-weight: 800; color: var(--blue); letter-spacing: -.5px; }
.stat span { font-size: 16px; font-weight: 700; color: var(--cyan); margin-left: 3px; }
.stat label { display: block; margin-top: 4px; font-size: 13.5px; color: var(--muted); }

/* ---------- 通用 Section ---------- */
.section { position: relative; overflow: hidden; padding: 88px 0; }
.section-alt { background: rgba(244, 247, 250, .5); }
.section > .container { position: relative; z-index: 1; }
/* 区块内的柔光团：给毛玻璃卡片提供可模糊的层次 */
.section::before,
.section::after {
  content: ""; position: absolute; border-radius: 50%;
  filter: blur(88px); pointer-events: none; z-index: 0;
}
.section::before {
  width: 520px; height: 520px; top: -180px; left: -160px;
  background: radial-gradient(circle, rgba(0, 160, 223, .30), rgba(0, 160, 223, 0) 68%);
  animation: blobFloat 20s ease-in-out infinite alternate;
}
.section::after {
  width: 460px; height: 460px; bottom: -200px; right: -140px;
  background: radial-gradient(circle, rgba(63, 125, 255, .22), rgba(63, 125, 255, 0) 68%);
  animation: blobFloat 26s ease-in-out infinite alternate-reverse;
}
.section-alt::before {
  background: radial-gradient(circle, rgba(0, 200, 190, .26), rgba(0, 200, 190, 0) 68%);
}
@keyframes blobFloat {
  0%   { transform: translate3d(0, 0, 0); }
  50%  { transform: translate3d(54px, 44px, 0); }
  100% { transform: translate3d(-40px, -32px, 0); }
}
.section-head { text-align: center; max-width: 720px; margin: 0 auto 52px; }
.section-tag {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 700; letter-spacing: 2px;
  color: var(--cyan); margin-bottom: 12px;
}
.section-tag::before {
  content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--cyan);
  animation: dotPulse 2.4s ease-in-out infinite;
}
@keyframes dotPulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(0, 160, 223, .55); opacity: 1; }
  70%      { box-shadow: 0 0 0 9px rgba(0, 160, 223, 0); opacity: .72; }
}
.section-head h2, .contact-info h2 {
  font-size: 34px; line-height: 1.35; color: var(--ink); font-weight: 800; letter-spacing: -.5px;
}
.section-head p { margin-top: 14px; color: var(--muted); font-size: 16px; }

/* ---------- 关于我们 ---------- */
.about-grid { display: block; max-width: 1000px; margin: 0 auto; }
.about-text h3 {
  font-size: 23px; color: var(--ink); margin-bottom: 18px; font-weight: 700;
  padding-left: 16px; border-left: 4px solid var(--cyan); line-height: 1.4;
}
.about-text p { margin-bottom: 16px; font-size: 15.5px; text-align: justify; }
.about-text b { color: var(--blue); font-weight: 600; }
/* 三张卡片：公司介绍下方横向排列 */
.about-side {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px;
  margin-top: 36px; padding-top: 36px; border-top: 1px solid var(--line);
}
.about-card {
  position: relative; overflow: hidden;
  display: flex; align-items: flex-start; gap: 16px;
  background: var(--glass);
  backdrop-filter: var(--blur); -webkit-backdrop-filter: var(--blur);
  border: 1px solid var(--glass-line); border-radius: var(--radius);
  padding: 24px 22px; box-shadow: var(--glass-shadow);
  transition: transform .35s var(--ease-out), box-shadow .35s var(--ease-out), border-color .35s;
}
.about-card:hover {
  box-shadow: var(--shadow-lg), inset 0 1px 0 rgba(255, 255, 255, .95);
  transform: translateY(-6px); border-color: rgba(159, 211, 238, .9);
}
.about-ico {
  flex-shrink: 0; width: 48px; height: 48px; border-radius: 10px;
  background: linear-gradient(140deg, rgba(230, 244, 251, .95), rgba(214, 236, 250, .8));
  border: 1px solid rgba(255, 255, 255, .8);
  display: flex; align-items: center; justify-content: center;
  font-size: 22px;
  transition: transform .4s var(--ease-out), box-shadow .4s var(--ease-out);
}
.about-card:hover .about-ico {
  transform: translateY(-2px) rotate(-6deg) scale(1.06);
  box-shadow: 0 8px 18px rgba(0, 114, 206, .18);
}
.about-card h4 { font-size: 16.5px; color: var(--ink); margin-bottom: 5px; font-weight: 700; }
.about-card p { font-size: 13.5px; color: var(--muted); }
.about-body { min-width: 0; }

/* ---------- 核心优势 ---------- */
.adv-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.adv-card {
  position: relative; overflow: hidden;
  background: var(--glass);
  backdrop-filter: var(--blur); -webkit-backdrop-filter: var(--blur);
  border: 1px solid var(--glass-line); border-radius: var(--radius);
  padding: 32px 30px;
  box-shadow: var(--glass-shadow);
  transition: transform .38s var(--ease-out), box-shadow .38s var(--ease-out), border-color .38s;
}
.adv-card::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 3px;
  background: linear-gradient(180deg, var(--cyan), var(--blue));
  transform: scaleY(0); transform-origin: top;
  transition: transform .45s var(--ease-out);
}
.adv-card:hover {
  box-shadow: var(--shadow-lg), inset 0 1px 0 rgba(255, 255, 255, .95);
  transform: translateY(-6px); border-color: rgba(159, 211, 238, .9);
}
.adv-card:hover::before { transform: scaleY(1); }
.adv-card h3 { font-size: 19px; color: var(--ink); margin-bottom: 12px; font-weight: 700; transition: color .3s; }
.adv-card:hover h3 { color: var(--blue); }
.adv-card p { font-size: 14.5px; text-align: justify; }

/* ---------- 产品体系：三版本横向对比 ---------- */
.cmp-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; padding: 4px; }
.cmp {
  display: grid; grid-template-columns: 168px repeat(3, minmax(0, 1fr));
  min-width: 820px;
  background: rgba(255, 255, 255, .72);
  backdrop-filter: var(--blur); -webkit-backdrop-filter: var(--blur);
  border: 1px solid var(--glass-line);
  border-radius: var(--radius); overflow: hidden; box-shadow: var(--glass-shadow);
}
/* 单元格分隔线（最后一行不加） */
.cmp > * { border-bottom: 1px solid rgba(227, 233, 239, .8); }
.cmp > *:nth-last-child(-n + 4) { border-bottom: none; }

/* 表头：版本信息 */
.cmp > .cmp-head-cell {
  background: linear-gradient(160deg, rgba(242, 248, 252, .82), rgba(232, 243, 250, .62));
  box-shadow: inset 3px 0 0 0 var(--cyan);
}
.cmp-ver {
  position: relative; overflow: hidden;
  display: flex; flex-direction: column; align-items: flex-start;
  gap: 9px; padding: 26px 22px 24px; border-left: 1px solid rgba(227, 233, 239, .8);
  transition: background .35s var(--ease-out);
}
.cmp-ver::after {
  content: ""; position: absolute; left: -40%; top: 0; width: 40%; height: 100%;
  background: linear-gradient(100deg, transparent, rgba(255, 255, 255, .65), transparent);
  transform: skewX(-18deg); transition: left .7s var(--ease-out);
}
.cmp-ver:hover { background: rgba(255, 255, 255, .75); }
.cmp-ver:hover::after { left: 130%; }
.cmp-ver-hot { background: linear-gradient(180deg, rgba(233, 246, 253, .8) 0%, rgba(247, 252, 254, .55) 100%); }
.cmp-tag {
  font-size: 11.5px; font-weight: 700; letter-spacing: .8px;
  color: var(--blue); background: rgba(230, 244, 251, .9);
  border: 1px solid rgba(255, 255, 255, .8);
  border-radius: 20px; padding: 4px 13px;
}
.cmp-badge {
  position: absolute; top: 22px; right: 20px; z-index: 1;
  background: linear-gradient(120deg, var(--blue), var(--cyan)); color: #fff;
  font-size: 11px; font-weight: 600;
  letter-spacing: .8px; padding: 3px 11px; border-radius: 20px;
  box-shadow: 0 4px 12px rgba(0, 114, 206, .28);
}
.cmp-ver h3 { font-size: 17px; line-height: 1.45; color: var(--ink); font-weight: 700; }
.cmp-ver-img {
  width: 100%; height: 104px; margin-top: 4px;
  display: flex; align-items: flex-end; justify-content: center;
}
.cmp-ver-img img {
  max-height: 96px; max-width: 88%; object-fit: contain; display: block;
  filter: drop-shadow(0 10px 16px rgba(29, 37, 44, .12));
  transition: transform .35s var(--ease-out);
}
.cmp-ver:hover .cmp-ver-img img { transform: translateY(-4px) scale(1.03); }

/* 维度列 */
.cmp-dim {
  display: flex; align-items: center;
  padding: 16px 20px; background: rgba(240, 245, 250, .68);
  font-size: 13.5px; font-weight: 700; color: var(--ink); letter-spacing: .3px;
  box-shadow: inset 3px 0 0 0 var(--cyan);
  transition: background .3s var(--ease-out);
}
/* 数据列 */
.cmp-val {
  display: flex; align-items: center;
  padding: 16px 22px; font-size: 13.5px; line-height: 1.7; color: var(--body);
  border-left: 1px solid rgba(227, 233, 239, .8); transition: background .3s var(--ease-out), color .3s;
}
.cmp-val.hot { background: rgba(0, 160, 223, .055); }
.cmp-val:hover { background: rgba(214, 238, 251, .72); color: var(--ink); }
.cmp-dim:hover { background: rgba(214, 238, 251, .78); }
.cmp-val.hot:hover { background: rgba(198, 232, 250, .8); }

.cmp-hint {
  display: none; margin-top: 14px; text-align: center;
  font-size: 12.5px; color: var(--muted);
}

/* ---------- 应用场景 ---------- */
.scene-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.scene-card {
  position: relative; overflow: hidden;
  background: var(--glass);
  backdrop-filter: var(--blur); -webkit-backdrop-filter: var(--blur);
  border: 1px solid var(--glass-line); border-radius: var(--radius);
  padding: 34px 24px; text-align: center; box-shadow: var(--glass-shadow);
  transition: transform .4s var(--ease-out), box-shadow .4s var(--ease-out), border-color .4s;
}
.scene-card::before {
  content: ""; position: absolute; inset: 0; z-index: 0; opacity: 0;
  border-radius: inherit;
  background: radial-gradient(200px circle at 50% 0%, rgba(0, 160, 223, .16), transparent 68%);
  transition: opacity .4s var(--ease-out);
}
.scene-card:hover {
  transform: translateY(-8px); border-color: rgba(159, 211, 238, .9);
  box-shadow: var(--shadow-lg), inset 0 1px 0 rgba(255, 255, 255, .95);
}
.scene-card:hover::before { opacity: 1; }
.scene-ico {
  position: relative; z-index: 1;
  width: 64px; height: 64px; margin: 0 auto 18px; border-radius: 50%;
  background: linear-gradient(150deg, rgba(230, 244, 251, .95), rgba(212, 235, 250, .78));
  border: 1px solid rgba(255, 255, 255, .85);
  display: flex; align-items: center; justify-content: center;
  font-size: 28px;
  transition: transform .45s var(--ease-out), box-shadow .45s var(--ease-out);
}
.scene-card:hover .scene-ico {
  transform: translateY(-3px) scale(1.1);
  box-shadow: 0 12px 26px rgba(0, 114, 206, .2);
}
.scene-card h3 { position: relative; z-index: 1; font-size: 17.5px; color: var(--ink); margin-bottom: 10px; font-weight: 700; }
.scene-card p { position: relative; z-index: 1; font-size: 13.5px; color: var(--muted); }

/* ---------- 联系我们 ---------- */
.section-contact { background: transparent; }
.contact-grid {
  position: relative; overflow: hidden;
  display: grid; grid-template-columns: 1.05fr .95fr; gap: 44px; align-items: start;
  background: linear-gradient(150deg, rgba(243, 249, 253, .7) 0%, rgba(232, 244, 251, .55) 100%);
  backdrop-filter: var(--blur); -webkit-backdrop-filter: var(--blur);
  border: 1px solid rgba(255, 255, 255, .8); border-radius: 16px; padding: 48px;
  box-shadow: var(--glass-shadow);
}
.contact-grid::before {
  content: ""; position: absolute; z-index: 0;
  width: 420px; height: 420px; top: -180px; right: -120px; border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 160, 223, .28), transparent 68%);
  filter: blur(70px); pointer-events: none;
  animation: blobFloat 22s ease-in-out infinite alternate;
}
.contact-info, .contact-form-card { position: relative; z-index: 1; }
.contact-info h2 { margin-bottom: 14px; }
.contact-slogan { color: var(--body); font-size: 16px; margin-bottom: 28px; }
.contact-list { list-style: none; }
.contact-list li {
  display: flex; gap: 18px; padding: 11px 0; font-size: 15px; color: var(--ink);
  border-bottom: 1px solid rgba(0, 114, 206, .12);
  transition: padding-left .3s var(--ease-out);
}
.contact-list li:hover { padding-left: 6px; }
.contact-list li:last-child { border-bottom: none; }
.contact-list b { color: var(--blue); flex-shrink: 0; width: 84px; font-weight: 600; }
.contact-qr { display: flex; align-items: center; gap: 18px; margin-top: 30px; }
.contact-qr img {
  width: 104px; height: 104px; padding: 8px; flex-shrink: 0;
  background: #fff; border-radius: 12px; box-shadow: var(--shadow);
  transition: transform .4s var(--ease-out), box-shadow .4s var(--ease-out);
}
.contact-qr img:hover { transform: scale(1.06) rotate(-2deg); box-shadow: var(--shadow-lg); }
.contact-qr p { color: var(--muted); font-size: 13.5px; }

/* ---------- 商务咨询表单（云服务留言落库） ---------- */
.contact-form-card {
  background: rgba(255, 255, 255, .66);
  backdrop-filter: var(--blur); -webkit-backdrop-filter: var(--blur);
  border: 1px solid rgba(255, 255, 255, .85); border-radius: 14px;
  padding: 32px 30px; box-shadow: var(--glass-shadow);
}
.contact-form-card h3 { font-size: 20px; color: var(--ink); font-weight: 700; }
.form-tip { font-size: 13.5px; color: var(--muted); margin: 8px 0 22px; }
.form-row { margin-bottom: 15px; }
.form-row label {
  display: block; font-size: 13.5px; font-weight: 600; color: var(--ink); margin-bottom: 7px;
}
.form-row label i { color: #d64545; font-style: normal; font-weight: 700; }
.form-row input, .form-row textarea {
  width: 100%; font-family: inherit; font-size: 14px; color: var(--ink);
  background: rgba(255, 255, 255, .72); border: 1px solid var(--line); border-radius: 8px;
  padding: 11px 14px; transition: border-color .25s, box-shadow .25s, background .25s, transform .25s;
}
.form-row textarea { resize: vertical; min-height: 96px; line-height: 1.7; }
.form-row input:focus, .form-row textarea:focus {
  outline: none; border-color: var(--blue); background: #fff;
  box-shadow: 0 0 0 3px rgba(0, 114, 206, .13), 0 6px 18px rgba(0, 114, 206, .1);
  transform: translateY(-1px);
}
.form-row input::placeholder, .form-row textarea::placeholder { color: #9aa8b4; }
.form-submit {
  width: 100%; margin-top: 6px; border: none; cursor: pointer; font-family: inherit;
}
.form-submit:disabled { opacity: .6; cursor: not-allowed; transform: none; }
.form-status { margin-top: 12px; font-size: 13.5px; line-height: 1.7; min-height: 20px; }
.form-status.ok { color: #1a7f4b; }
.form-status.err { color: #c0392b; }
.hp-field { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

/* ---------- 页脚 ---------- */
.footer { position: relative; background: var(--ink); color: #a8b3bd; overflow: hidden; }
.footer::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, transparent, var(--cyan), var(--blue), var(--cyan), transparent);
  background-size: 220% 100%;
  animation: lineFlow 6s linear infinite;
  opacity: .9;
}
.footer::after {
  content: ""; position: absolute; top: -220px; left: 50%; width: 620px; height: 420px;
  transform: translateX(-50%);
  background: radial-gradient(circle, rgba(0, 160, 223, .22), transparent 68%);
  filter: blur(70px); pointer-events: none;
  animation: blobFloat 24s ease-in-out infinite alternate;
}
@keyframes lineFlow {
  to { background-position: 220% 0; }
}
.footer-top {
  position: relative; z-index: 1;
  display: grid; grid-template-columns: 1.1fr 2fr; gap: 56px;
  padding-top: 62px; padding-bottom: 46px;
}
.footer-logo { height: 30px; width: auto; margin-bottom: 16px; }
.footer-slogan { font-size: 13.5px; color: #8d99a4; margin-bottom: 20px; max-width: 280px; }
.footer-contact { list-style: none; font-size: 13px; color: #8d99a4; }
.footer-contact li { padding: 3px 0; }
.footer-cols { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; }
.footer-col h5 {
  color: #fff; font-size: 14px; font-weight: 700; margin-bottom: 16px; letter-spacing: .5px;
}
.footer-col a {
  display: block; font-size: 13.5px; color: #a8b3bd; padding: 5px 0; transition: .2s;
}
.footer-col a:hover { color: var(--cyan); }
.footer-legal { position: relative; z-index: 1; border-top: 1px solid rgba(255, 255, 255, .1); padding: 20px 0; }
.legal-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.footer-legal p { font-size: 12.5px; color: #7d8994; }
.legal-links { display: flex; flex-wrap: wrap; gap: 8px 20px; }
.legal-links a { color: #7d8994; transition: .2s; white-space: nowrap; }
.legal-links a:hover { color: var(--cyan); }

/* ---------- 返回顶部 ---------- */
#backTop {
  position: fixed; right: 26px; bottom: 30px; width: 46px; height: 46px;
  border-radius: 50%; border: none; background: var(--blue); color: #fff;
  font-size: 19px; cursor: pointer; opacity: 0; pointer-events: none;
  transition: .35s var(--ease-out); box-shadow: 0 8px 20px rgba(0, 114, 206, .32); z-index: 99;
}
#backTop.show { opacity: 1; pointer-events: auto; }
#backTop.show::after {
  content: ""; position: absolute; inset: 0; border-radius: 50%;
  border: 2px solid rgba(0, 160, 223, .6);
  animation: ringPulse 2.6s ease-out infinite;
}
@keyframes ringPulse {
  0%   { transform: scale(1); opacity: .8; }
  70%  { transform: scale(1.65); opacity: 0; }
  100% { transform: scale(1.65); opacity: 0; }
}
#backTop:hover { background: var(--blue-dark); transform: translateY(-3px); }

/* ---------- 滚动浮现 ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .75s var(--ease-out), transform .75s var(--ease-out); }
.reveal.visible { opacity: 1; transform: none; }
/* 卡片类元素带轻微缩放，入场更有层次 */
.adv-card.reveal, .scene-card.reveal, .about-card.reveal {
  transform: translateY(30px) scale(.975);
}
.adv-card.reveal.visible, .scene-card.reveal.visible, .about-card.reveal.visible {
  transform: none;
}

/* ---------- 鼠标跟随高光（JS 写入 --mx / --my） ---------- */
.adv-card, .about-card, .scene-card, .contact-form-card { --mx: 50%; --my: 50%; }
.spotlight::after {
  content: ""; position: absolute; inset: 0; z-index: 0; pointer-events: none;
  border-radius: inherit; opacity: 0;
  background: radial-gradient(260px circle at var(--mx) var(--my), rgba(0, 160, 223, .20), transparent 62%);
  transition: opacity .45s var(--ease-out);
}
.spotlight:hover::after { opacity: 1; }
/* 卡片内容提到高光层之上，保证文字清晰 */
.adv-card > *, .about-card > *, .scene-card > *, .contact-form-card > * {
  position: relative; z-index: 1;
}

/* ---------- 无障碍：尊重减少动态偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  .reveal { opacity: 1 !important; transform: none !important; }
  .aurora, .hero-visual::before, .spotlight::after, .hero::before { display: none !important; }
}

/* ---------- 响应式 ---------- */
@media (max-width: 992px) {
  .hero-grid { grid-template-columns: 1fr; gap: 32px; padding-top: 56px; padding-bottom: 56px; }
  .hero-copy { padding-bottom: 0; }
  .hero-visual img { height: clamp(240px, 54vw, 340px); }
  .adv-grid { grid-template-columns: repeat(2, 1fr); }
  .scene-grid { grid-template-columns: repeat(2, 1fr); }
  .cmp-hint { display: block; }
  .about-side { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; gap: 36px; }
  .footer-cols { grid-template-columns: repeat(2, 1fr); }
  /* 光晕团缩小，避免小屏溢出拖累滚动 */
  .section::before { width: 340px; height: 340px; }
  .section::after { width: 300px; height: 300px; }
  .section::before, .section::after { filter: blur(64px); }
  .aurora i { filter: blur(56px); }
}
@media (max-width: 640px) {
  .nav-links {
    position: fixed; top: 74px; right: 0; width: 240px; height: auto;
    background: rgba(255, 255, 255, .82);
    backdrop-filter: var(--blur); -webkit-backdrop-filter: var(--blur);
    border: 1px solid rgba(255, 255, 255, .8); border-right: none; border-top: none;
    flex-direction: column; align-items: flex-start;
    padding: 26px; gap: 18px; box-shadow: -8px 8px 30px rgba(29, 37, 44, .14);
    border-radius: 0 0 0 14px; transform: translateX(110%); transition: .3s var(--ease-out);
  }
  .nav-links.open { transform: none; }
  .nav-toggle { display: block; }
  .adv-grid, .scene-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .stat { border-right: none; }
  .stat:nth-child(odd) { border-right: 1px solid var(--line); }
  .contact-grid { padding: 36px 26px; }
  .contact-form-card { padding: 26px 22px; }
  .section { padding: 64px 0; }
  .section-head h2, .contact-info h2 { font-size: 26px; }
  .footer-cols { grid-template-columns: 1fr; }
  .legal-inner { flex-direction: column; align-items: flex-start; gap: 10px; }
  .legal-links { gap: 6px 16px; }
  .section::before, .section::after { width: 240px; height: 240px; filter: blur(52px); opacity: .8; }
  .hero::before { background-size: 40px 40px; }
  #backTop { right: 16px; bottom: 20px; }
}