/* ============================================================
 * 造梦寻声 Dream Design 官网样式
 * 设计系统：深空玻璃 + 电影质感 + 蓝青光晕
 * ============================================================ */

/* ---------- 设计令牌 ---------- */
:root {
  --bg-deep: #060a18;
  --bg-mid: #0a1330;
  --bg-up: #0f1a3d;

  --c-text: #e8efff;
  --c-text-dim: #aab6da;
  --c-text-mute: #6a7aa8;

  --c-primary: #1aa6ff;
  --c-primary-2: #26d0ff;
  --c-accent: #7c5cff;
  --c-accent-2: #22d3ee;
  --c-magenta: #b06bff;

  --grad-primary: linear-gradient(135deg, #1aa6ff 0%, #26d0ff 50%, #7c5cff 100%);
  --grad-aurora: radial-gradient(60% 50% at 30% 30%, rgba(34, 211, 238, .35), transparent 60%),
                 radial-gradient(50% 50% at 70% 60%, rgba(124, 92, 255, .35), transparent 60%),
                 radial-gradient(45% 50% at 50% 90%, rgba(26, 166, 255, .30), transparent 60%);

  --glass-bg: linear-gradient(160deg, rgba(255, 255, 255, .08) 0%, rgba(255, 255, 255, .02) 100%);
  --glass-border: 1px solid rgba(255, 255, 255, .14);
  --glass-shadow: 0 12px 40px rgba(0, 8, 30, .35), inset 0 1px 0 rgba(255, 255, 255, .15);

  --radius-lg: 22px;
  --radius-md: 16px;
  --radius-sm: 10px;

  --ease-out: cubic-bezier(.2, .7, .2, 1);
  --ease-emph: cubic-bezier(.22, 1, .36, 1);

  --container: 1240px;
  --header-h: 76px;
}

/* ---------- 重置 & 基础 ---------- */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei UI", "HarmonyOS Sans SC", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  color: var(--c-text);
  background: var(--bg-deep);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  line-height: 1.6;
  cursor: none;
}
@media (max-width: 900px) { body { cursor: auto; } }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
input, select, textarea { font: inherit; color: inherit; }

.container { width: min(100% - 48px, var(--container)); margin: 0 auto; }

/* 滚动条 */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: #060a18; }
::-webkit-scrollbar-thumb { background: linear-gradient(180deg, #1aa6ff, #7c5cff); border-radius: 8px; }

/* ---------- 选区 ---------- */
::selection { background: rgba(38, 208, 255, .35); color: #fff; }

/* ============================================================
 * 加载动画
 * ============================================================ */
.boot-screen {
  position: fixed; inset: 0; z-index: 9999;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 28px;
  background: radial-gradient(ellipse at center, #0c1746 0%, #050816 70%);
  transition: opacity .8s var(--ease-out), visibility .8s var(--ease-out);
}
.boot-screen.hide { opacity: 0; visibility: hidden; }
.boot-logo { position: relative; width: 120px; height: 120px; display: grid; place-items: center; }
.boot-logo img { width: 80px; filter: drop-shadow(0 0 24px rgba(38, 208, 255, .8)); animation: bootPulse 1.6s ease-in-out infinite; }
.boot-ring {
  position: absolute; inset: 0; border-radius: 50%;
  border: 2px solid transparent;
  border-top-color: #26d0ff; border-right-color: #7c5cff;
  animation: bootSpin 1.2s linear infinite;
}
.boot-text {
  letter-spacing: .5em; font-weight: 600; font-size: 14px;
  background: var(--grad-primary); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.boot-bar { width: 200px; height: 2px; background: rgba(255, 255, 255, .08); border-radius: 99px; overflow: hidden; }
.boot-bar span { display: block; height: 100%; width: 0; background: var(--grad-primary); animation: bootBar 1.6s var(--ease-emph) forwards; }
@keyframes bootSpin { to { transform: rotate(360deg); } }
@keyframes bootPulse { 0%,100% { transform: scale(1); } 50% { transform: scale(1.08); } }
@keyframes bootBar { to { width: 100%; } }

/* ============================================================
 * 自定义鼠标光晕
 * ============================================================ */
.cursor-glow {
  position: fixed; top: 0; left: 0; width: 30px; height: 30px;
  border-radius: 50%; pointer-events: none; z-index: 10000;
  background: radial-gradient(circle, rgba(38, 208, 255, .9), rgba(38, 208, 255, 0) 60%);
  mix-blend-mode: screen;
  transform: translate(-50%, -50%);
  transition: width .25s var(--ease-out), height .25s var(--ease-out), background .25s;
  will-change: transform;
}
.cursor-glow.large {
  width: 90px; height: 90px;
  background: radial-gradient(circle, rgba(124, 92, 255, .55), rgba(38, 208, 255, .1) 50%, rgba(0, 0, 0, 0) 70%);
}
@media (max-width: 900px) { .cursor-glow { display: none; } }

/* ============================================================
 * 顶部导航
 * ============================================================ */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: var(--header-h);
  transition: all .4s var(--ease-out);
}
.nav-inner {
  height: 100%;
  width: min(100% - 48px, 1340px); margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  gap: 24px;
}
.nav.scrolled {
  backdrop-filter: blur(18px) saturate(160%); -webkit-backdrop-filter: blur(18px) saturate(160%);
  background: linear-gradient(180deg, rgba(8, 14, 36, .8), rgba(8, 14, 36, .6));
  border-bottom: 1px solid rgba(255, 255, 255, .08);
  box-shadow: 0 10px 30px rgba(0, 0, 0, .25);
}
.nav-logo {
  display: flex; align-items: center; gap: 12px; flex-shrink: 0;
  height: 100%;
  transition: transform .35s var(--ease-out);
}
.nav-logo:hover { transform: translateY(-1px); }
.nav-logo-mark {
  width: 40px; height: 40px;
  filter:
    drop-shadow(0 0 14px rgba(38, 208, 255, .55))
    drop-shadow(0 4px 14px rgba(0, 12, 40, .35))
    brightness(1.05) saturate(1.1);
  transition: filter .35s var(--ease-out), width .35s var(--ease-out), height .35s var(--ease-out);
}
.nav-logo:hover .nav-logo-mark {
  filter:
    drop-shadow(0 0 22px rgba(38, 208, 255, .85))
    drop-shadow(0 6px 18px rgba(0, 12, 40, .35))
    brightness(1.12) saturate(1.15);
}
.nav-logo-name {
  display: flex; flex-direction: column;
  line-height: 1.05;
  gap: 2px;
}
.nav-logo-name strong {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: .03em;
  background: linear-gradient(135deg, #ffffff 0%, #b9e6ff 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  text-shadow: 0 2px 8px rgba(0, 12, 40, .35);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
}
.nav-logo-name em {
  font-style: normal;
  font-size: 11px;
  letter-spacing: .42em;
  color: rgba(255, 255, 255, .72);
  font-weight: 500;
  padding-left: 1px;
}
.nav.scrolled .nav-logo-mark { width: 36px; height: 36px; }
.nav.scrolled .nav-logo-name strong { font-size: 16px; }
.nav.scrolled .nav-logo-name em { font-size: 10px; }
.nav-menu { display: flex; align-items: center; gap: 6px; }
.nav-menu a {
  position: relative; padding: 8px 16px; font-size: 14.5px;
  color: var(--c-text-dim);
  border-radius: 99px; transition: all .35s var(--ease-out);
}
.nav-menu a::before {
  content: ""; position: absolute; inset: 0; border-radius: 99px;
  background: linear-gradient(135deg, rgba(38, 208, 255, .2), rgba(124, 92, 255, .15));
  border: 1px solid rgba(255, 255, 255, .1);
  opacity: 0; transition: opacity .35s var(--ease-out);
}
.nav-menu a:hover, .nav-menu a.active { color: #fff; }
.nav-menu a:hover::before, .nav-menu a.active::before { opacity: 1; }

.nav-tools { display: flex; align-items: center; gap: 12px; }
.lang-switch {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 14px; border-radius: 99px;
  background: rgba(255, 255, 255, .04);
  border: 1px solid rgba(255, 255, 255, .12);
  color: var(--c-text-dim); font-size: 13px;
  transition: all .3s var(--ease-out);
}
.lang-switch:hover { color: #fff; border-color: rgba(38, 208, 255, .55); background: rgba(38, 208, 255, .12); }

.btn-glass {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 9px 22px; border-radius: 99px;
  font-size: 14px; font-weight: 500; color: #fff;
  background: rgba(255, 255, 255, .05);
  border: 1px solid rgba(255, 255, 255, .12);
  backdrop-filter: blur(10px);
  transition: all .35s var(--ease-out);
}
.btn-glass.btn-primary {
  background: linear-gradient(135deg, rgba(38, 208, 255, .18), rgba(124, 92, 255, .18));
  border-color: rgba(38, 208, 255, .35);
  box-shadow: 0 6px 22px rgba(38, 208, 255, .18);
}
.btn-glass:hover {
  border-color: rgba(38, 208, 255, .65);
  box-shadow: 0 8px 28px rgba(38, 208, 255, .35);
  transform: translateY(-1px);
}

.nav-burger { display: none; flex-direction: column; gap: 5px; padding: 8px; }
.nav-burger span { width: 22px; height: 2px; background: #fff; border-radius: 2px; transition: all .3s; }
.nav-burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-burger.open span:nth-child(2) { opacity: 0; }
.nav-burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================================
 * Hero 区
 * ============================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  overflow: hidden;
  display: flex; align-items: center;
  isolation: isolate;
}
.hero-video {
  position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: cover; z-index: -4;
  filter: saturate(1.05) contrast(1.05) brightness(.85);
  opacity: 0;
  pointer-events: none;
}
.hero-video.active { opacity: 1; z-index: -3; }
.hero-fallback {
  position: absolute; inset: 0; z-index: -3;
  background:
    radial-gradient(ellipse at 25% 20%, rgba(124, 92, 255, .35), transparent 55%),
    radial-gradient(ellipse at 75% 80%, rgba(38, 208, 255, .35), transparent 55%),
    url('../img/bg_fallback.png') center/cover no-repeat,
    var(--bg-deep);
  /* 在视频加载完成时通过 JS 隐藏；视频不可用时它就是兜底 */
  opacity: 0; transition: opacity 1s ease;
}
.hero-fallback.show { opacity: 1; }

.cloud {
  position: absolute; border-radius: 50%; filter: blur(70px); opacity: .55;
  mix-blend-mode: screen;
  animation: cloudFloat 24s ease-in-out infinite;
}
.cloud-1 { width: 520px; height: 520px; left: -10%; top: 10%; background: radial-gradient(circle, #26d0ff, transparent 70%); }
.cloud-2 { width: 460px; height: 460px; right: -8%; top: 20%; background: radial-gradient(circle, #7c5cff, transparent 70%); animation-duration: 32s; animation-delay: -6s; }
.cloud-3 { width: 380px; height: 380px; left: 30%; bottom: -10%; background: radial-gradient(circle, #22d3ee, transparent 70%); animation-duration: 28s; animation-delay: -12s; }
.cloud-4 { width: 300px; height: 300px; right: 22%; top: 50%; background: radial-gradient(circle, #b06bff, transparent 70%); animation-duration: 36s; animation-delay: -3s; }
@keyframes cloudFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(40px, -30px) scale(1.05); }
  66% { transform: translate(-30px, 35px) scale(.95); }
}

.particles { position: absolute; inset: 0; z-index: -2; pointer-events: none; }

.hero-overlay {
  position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background:
    linear-gradient(180deg, rgba(6, 10, 24, .55) 0%, rgba(6, 10, 24, .25) 35%, rgba(6, 10, 24, .65) 100%),
    linear-gradient(115deg, rgba(6, 10, 24, .55) 0%, rgba(6, 10, 24, 0) 50%);
}
.hero-vignette {
  position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background: radial-gradient(ellipse at center, transparent 50%, rgba(0, 0, 0, .55) 100%);
}

/* Hero 内容布局 */
.hero-inner {
  position: relative; z-index: 1;
  width: min(100% - 48px, 1340px);
  margin: 0 auto;
  padding: calc(var(--header-h) + 60px) 0 80px;
  display: grid; grid-template-columns: 1.35fr .65fr; gap: 56px; align-items: center;
}
.hero-text { min-width: 0; }

.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 6px 14px; border-radius: 99px;
  background: rgba(255, 255, 255, .05);
  border: 1px solid rgba(255, 255, 255, .12);
  font-size: 12px; letter-spacing: .25em; color: #b9e6ff;
  margin-bottom: 28px;
}
.hero-eyebrow .dot { width: 6px; height: 6px; border-radius: 50%; background: #26d0ff; box-shadow: 0 0 12px #26d0ff; animation: dotPulse 2s ease-in-out infinite; }
@keyframes dotPulse { 0%, 100% { opacity: 1; } 50% { opacity: .35; } }

.hero-title { font-size: clamp(38px, 5vw, 76px); line-height: 1.12; font-weight: 800; margin: 0; letter-spacing: -.02em; white-space: nowrap; }
.hero-title .line { display: block; opacity: 0; transform: translateY(40px); animation: heroIn .9s var(--ease-emph) forwards; }
.hero-title .line-1 {
  background: linear-gradient(135deg, #ffffff 0%, #b9e6ff 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  animation-delay: .3s;
  filter: drop-shadow(0 8px 30px rgba(38, 208, 255, .55)) drop-shadow(0 2px 6px rgba(0, 8, 30, .35));
}
.hero-title .line-2 {
  animation-delay: .55s;
  filter: drop-shadow(0 2px 8px rgba(0, 8, 30, .45));
}
.hero-title .hl {
  background: var(--grad-primary);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  position: relative;
}
@keyframes heroIn { to { opacity: 1; transform: translateY(0); } }

.hero-sub {
  font-size: clamp(15px, 1.2vw, 17px); color: #d0deff;
  margin: 28px 0 40px; max-width: 540px;
  text-shadow: 0 2px 12px rgba(0, 8, 30, .5);
  opacity: 0; transform: translateY(20px); animation: heroIn .9s var(--ease-emph) .85s forwards;
}
.hero-sub-dim { color: rgba(185, 230, 255, .7); font-size: 13px; letter-spacing: .04em; }

.hero-cta { display: flex; gap: 16px; flex-wrap: wrap; opacity: 0; transform: translateY(20px); animation: heroIn .9s var(--ease-emph) 1.05s forwards; }

.btn-glow {
  position: relative; display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 32px; border-radius: 99px;
  background: var(--grad-primary);
  color: #fff; font-weight: 600; font-size: 15px;
  letter-spacing: .02em;
  box-shadow: 0 12px 36px rgba(38, 208, 255, .35), inset 0 1px 0 rgba(255, 255, 255, .25);
  overflow: hidden;
  transition: transform .4s var(--ease-emph), box-shadow .4s;
}
.btn-glow::before {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(120deg, transparent, rgba(255, 255, 255, .55), transparent);
  transform: translateX(-100%);
  transition: transform .8s var(--ease-emph);
}
.btn-glow:hover { transform: translateY(-2px); box-shadow: 0 18px 48px rgba(38, 208, 255, .55); }
.btn-glow:hover::before { transform: translateX(100%); }
.btn-glow .cta-icon {
  width: 26px; height: 26px; display: grid; place-items: center;
  border-radius: 50%; background: rgba(255, 255, 255, .25);
}

.btn-ghost {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 28px; border-radius: 99px;
  background: rgba(255, 255, 255, .05);
  color: #fff; font-weight: 500; font-size: 15px;
  border: 1px solid rgba(255, 255, 255, .18);
  backdrop-filter: blur(8px);
  transition: all .35s var(--ease-out);
}
.btn-ghost:hover { background: rgba(255, 255, 255, .1); border-color: rgba(38, 208, 255, .55); transform: translateY(-2px); }

/* Hero 浮动 Logo（与导航横版 logo 形成视觉差异：聚焦 X 标识，立体光感）*/
.hero-logo-3d {
  position: relative; aspect-ratio: 1 / 1;
  display: grid; place-items: center;
  perspective: 1400px;
  opacity: 0; transform: translateY(30px) scale(.92);
  animation: heroIn 1.4s var(--ease-emph) .7s forwards;
}
.logo-card {
  --tilt-x: 0deg; --tilt-y: 0deg;
  position: relative; width: min(360px, 78%); aspect-ratio: 1;
  border-radius: 32px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, .18) 0%, rgba(38, 208, 255, .12) 40%, rgba(124, 92, 255, .14) 100%),
    radial-gradient(80% 80% at 30% 25%, rgba(38, 208, 255, .35), transparent 70%);
  border: 1px solid rgba(255, 255, 255, .3);
  backdrop-filter: blur(24px) saturate(160%); -webkit-backdrop-filter: blur(24px) saturate(160%);
  box-shadow:
    0 30px 80px rgba(0, 12, 40, .6),
    0 0 60px rgba(38, 208, 255, .25),
    inset 0 1px 0 rgba(255, 255, 255, .45),
    inset 0 -1px 0 rgba(124, 92, 255, .25);
  display: grid; place-items: center;
  transform-style: preserve-3d;
  transform: rotateX(var(--tilt-y)) rotateY(var(--tilt-x));
  animation: logoFloat 7s ease-in-out infinite;
  transition: transform .25s var(--ease-out);
}
.logo-card::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit; pointer-events: none;
  background: linear-gradient(160deg, rgba(255, 255, 255, .35), transparent 40%);
}
/* 边框流光（旋转的 conic 高光） */
.logo-card::after {
  content: ""; position: absolute; inset: 0; border-radius: inherit; pointer-events: none;
  padding: 1.5px;
  background: conic-gradient(from var(--ang, 0deg),
    transparent 0deg,
    rgba(38, 208, 255, .55) 40deg,
    rgba(124, 92, 255, .55) 110deg,
    transparent 180deg,
    rgba(38, 208, 255, .35) 250deg,
    transparent 360deg);
  -webkit-mask:
    linear-gradient(#000, #000) content-box,
    linear-gradient(#000, #000);
          mask:
    linear-gradient(#000, #000) content-box,
    linear-gradient(#000, #000);
  -webkit-mask-composite: xor;
          mask-composite: exclude;
  animation: borderFlow 8s linear infinite;
  opacity: .9;
  filter: blur(.5px);
}

/* X 图标本体（透明 PNG）*/
.logo-card .logo-x {
  position: relative; z-index: 2;
  width: 58%; aspect-ratio: 1;
  filter:
    drop-shadow(0 0 18px rgba(38, 208, 255, .9))
    drop-shadow(0 12px 28px rgba(0, 12, 40, .55))
    saturate(1.15) brightness(1.05);
  animation: logoSpin 10s ease-in-out infinite;
}

/* 棱镜光（彩虹反光）*/
.logo-prism {
  position: absolute; inset: 0; border-radius: inherit; pointer-events: none;
  background:
    radial-gradient(circle at 25% 20%, rgba(184, 252, 255, .55), transparent 35%),
    radial-gradient(circle at 80% 75%, rgba(176, 107, 255, .35), transparent 40%);
  mix-blend-mode: screen;
  opacity: .9;
}

/* 光泽扫光（已按需求关闭） */
.logo-glare { display: none; }

/* 背面闪烁亮斑 */
.logo-shine {
  position: absolute; inset: 0; pointer-events: none; border-radius: inherit;
  background:
    radial-gradient(2px 2px at 18% 22%, #fff, transparent 50%),
    radial-gradient(1.5px 1.5px at 78% 30%, #b9e6ff, transparent 50%),
    radial-gradient(2px 2px at 25% 78%, #fff, transparent 50%),
    radial-gradient(1.5px 1.5px at 82% 70%, #d6c9ff, transparent 50%);
  animation: starTwinkle 3.6s ease-in-out infinite;
}

/* 外圈光晕 */
.logo-halo {
  position: absolute; inset: -15%;
  background:
    radial-gradient(circle at 50% 50%, rgba(38, 208, 255, .45), transparent 55%),
    radial-gradient(circle at 30% 70%, rgba(124, 92, 255, .35), transparent 60%);
  filter: blur(50px);
  animation: haloPulse 4.5s ease-in-out infinite;
  z-index: -1;
}

/* 同心环（科技感）*/
.logo-rings {
  position: absolute; inset: -8%; pointer-events: none;
  display: grid; place-items: center;
}
.ring {
  position: absolute; border-radius: 50%;
  border: 1px dashed rgba(38, 208, 255, .35);
  animation: ringSpin 30s linear infinite;
}
.ring-1 { width: 95%; aspect-ratio: 1; }
.ring-2 { width: 110%; aspect-ratio: 1; border-style: solid; border-color: rgba(38, 208, 255, .15); animation-duration: 50s; animation-direction: reverse; }
.ring-3 { width: 125%; aspect-ratio: 1; border-style: dashed; border-color: rgba(124, 92, 255, .25); animation-duration: 60s; }

/* 光线锥 */
.logo-rays {
  position: absolute; inset: -25%; pointer-events: none;
  background: conic-gradient(from 0deg,
    transparent 0deg,
    rgba(255, 255, 255, .14) 50deg,
    transparent 110deg,
    transparent 230deg,
    rgba(38, 208, 255, .18) 290deg,
    transparent 360deg);
  filter: blur(30px); opacity: .7;
  animation: rayRotate 22s linear infinite;
  z-index: -1;
}

/* 轨道光点 */
.logo-orbits {
  position: absolute; inset: -8%;
  display: grid; place-items: center; pointer-events: none;
}
.logo-orbits .orbit {
  position: absolute; width: 100%; aspect-ratio: 1;
  border-radius: 50%;
  animation: orbitSpin 12s linear infinite;
}
.logo-orbits .orbit::after {
  content: ""; position: absolute; top: -3px; left: 50%;
  width: 8px; height: 8px; border-radius: 50%;
  transform: translateX(-50%);
  background: #26d0ff;
  box-shadow: 0 0 16px #26d0ff, 0 0 4px #fff;
}
.logo-orbits .orbit-1 { width: 102%; }
.logo-orbits .orbit-2 { width: 116%; animation-duration: 18s; animation-direction: reverse; }
.logo-orbits .orbit-2::after { background: #b06bff; box-shadow: 0 0 16px #b06bff, 0 0 4px #fff; }
.logo-orbits .orbit-3 { width: 130%; animation-duration: 26s; }
.logo-orbits .orbit-3::after { width: 5px; height: 5px; background: #ffffff; box-shadow: 0 0 12px #ffffff; }

@property --ang {
  syntax: '<angle>'; initial-value: 0deg; inherits: false;
}
@keyframes borderFlow { to { --ang: 360deg; } }
@keyframes logoFloat {
  0%, 100% { transform: rotateX(var(--tilt-y)) rotateY(var(--tilt-x)) translateY(0); }
  50% { transform: rotateX(var(--tilt-y)) rotateY(var(--tilt-x)) translateY(-14px); }
}
@keyframes logoSpin {
  0%, 100% { transform: rotateZ(0deg) scale(1); }
  50% { transform: rotateZ(8deg) scale(1.04); }
}
@keyframes starTwinkle {
  0%, 100% { opacity: 1; }
  50% { opacity: .35; }
}
@keyframes haloPulse {
  0%, 100% { opacity: .7; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.1); }
}
@keyframes rayRotate { to { transform: rotate(360deg); } }
@keyframes ringSpin { to { transform: rotate(360deg); } }
@keyframes orbitSpin { to { transform: rotate(360deg); } }

/* 滚动提示 */
.scroll-down {
  position: absolute; bottom: 28px; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  z-index: 2; color: rgba(255, 255, 255, .6);
  opacity: 0; animation: heroIn .9s var(--ease-emph) 1.6s forwards;
}
.scroll-down .mouse {
  width: 22px; height: 36px; border: 1.5px solid rgba(255, 255, 255, .55); border-radius: 14px;
  position: relative;
}
.scroll-down .wheel {
  position: absolute; top: 6px; left: 50%; transform: translateX(-50%);
  width: 3px; height: 8px; border-radius: 2px; background: #fff;
  animation: wheelMove 1.8s var(--ease-out) infinite;
}
@keyframes wheelMove {
  0% { opacity: 0; transform: translate(-50%, 0); }
  40% { opacity: 1; }
  100% { opacity: 0; transform: translate(-50%, 12px); }
}
.scroll-text { font-size: 11px; letter-spacing: .3em; }

/* ============================================================
 * 通用 section
 * ============================================================ */
.section {
  position: relative;
  padding: clamp(80px, 10vw, 140px) 0;
  overflow: hidden;
  background: var(--bg-deep);
}
.section + .section { border-top: 1px solid rgba(255, 255, 255, .04); }

.section-head { text-align: center; max-width: 720px; margin: 0 auto 64px; }
.section-eyebrow {
  display: inline-block; font-size: 12px; letter-spacing: .35em;
  background: var(--grad-primary);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  font-weight: 600;
}
.section-title {
  font-size: clamp(32px, 4vw, 52px); margin: 14px 0 18px;
  font-weight: 700; letter-spacing: -.01em;
  background: linear-gradient(180deg, #ffffff 0%, #c9d8ff 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.section-desc { color: var(--c-text-dim); font-size: 15px; line-height: 1.85; }

/* 通用玻璃面板 */
.glass {
  position: relative;
  background: var(--glass-bg);
  border: var(--glass-border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  box-shadow: var(--glass-shadow);
  overflow: hidden;
}
.glass::before {
  content: ""; position: absolute; inset: 0; pointer-events: none; border-radius: inherit;
  background: linear-gradient(160deg, rgba(255, 255, 255, .14), transparent 38%);
}

/* 滚动揭示动画 */
.reveal {
  opacity: 0; transform: translateY(40px);
  transition: opacity .9s var(--ease-emph), transform .9s var(--ease-emph);
  transition-delay: var(--d, 0ms);
}
.reveal.in { opacity: 1; transform: translateY(0); }

/* 装饰背景：网格 */
.bg-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(38, 208, 255, .06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(38, 208, 255, .06) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 35%, #000 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 35%, #000 30%, transparent 80%);
  opacity: .6;
}
/* 装饰背景：极光 */
.bg-aurora {
  position: absolute; inset: 0; pointer-events: none;
  filter: blur(80px); opacity: .5;
}
.bg-aurora span {
  position: absolute; border-radius: 50%; mix-blend-mode: screen;
}
.bg-aurora span:nth-child(1) { width: 600px; height: 600px; top: -10%; left: -10%; background: #1aa6ff; animation: cloudFloat 20s ease-in-out infinite; }
.bg-aurora span:nth-child(2) { width: 500px; height: 500px; bottom: -10%; right: -5%; background: #7c5cff; animation: cloudFloat 24s ease-in-out infinite reverse; }
.bg-aurora span:nth-child(3) { width: 400px; height: 400px; top: 30%; left: 40%; background: #22d3ee; animation: cloudFloat 28s ease-in-out infinite -8s; }

/* ============================================================
 * 关于我们 - 数据卡片
 * ============================================================ */
.section-about { background: linear-gradient(180deg, #060a18 0%, #08102a 100%); }
.stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px;
}
.stat-card {
  padding: 32px 26px;
  text-align: center;
  transition: transform .5s var(--ease-emph), box-shadow .5s, border-color .5s;
}
.stat-card:hover {
  transform: translateY(-8px);
  border-color: rgba(38, 208, 255, .45);
  box-shadow: 0 20px 50px rgba(38, 208, 255, .25), inset 0 1px 0 rgba(255, 255, 255, .25);
}
.stat-icon {
  width: 56px; height: 56px; margin: 0 auto 18px;
  display: grid; place-items: center;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(38, 208, 255, .2), rgba(124, 92, 255, .15));
  border: 1px solid rgba(38, 208, 255, .35);
  color: #26d0ff;
  box-shadow: 0 6px 22px rgba(38, 208, 255, .25);
}
.stat-icon svg { width: 28px; height: 28px; }
.stat-num {
  font-size: 44px; font-weight: 800; letter-spacing: -.02em;
  display: inline-flex; align-items: baseline;
  background: linear-gradient(180deg, #fff, #b9e6ff);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.stat-num em { font-style: normal; font-size: 24px; margin-left: 2px; }
.stat-label { color: var(--c-text-dim); font-size: 14px; margin-top: 4px; letter-spacing: .04em; }
.stat-line {
  width: 32px; height: 2px; margin: 16px auto 0;
  background: var(--grad-primary); border-radius: 2px;
  transition: width .5s;
}
.stat-card:hover .stat-line { width: 64px; }

/* ============================================================
 * 业务领域
 * ============================================================ */
.section-business { background: linear-gradient(180deg, #08102a 0%, #060a18 100%); }
.biz-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.biz-card {
  position: relative; padding: 44px 40px; min-height: 420px;
  display: flex; flex-direction: column;
  transition: transform .5s var(--ease-emph), border-color .5s, box-shadow .5s;
  background:
    linear-gradient(160deg, rgba(38, 208, 255, .08), rgba(255, 255, 255, .02) 60%),
    var(--glass-bg);
}
.biz-card-alt {
  background:
    linear-gradient(160deg, rgba(124, 92, 255, .12), rgba(255, 255, 255, .02) 60%),
    var(--glass-bg);
}
.biz-card::after {
  content: ""; position: absolute; inset: 0; border-radius: inherit; pointer-events: none;
  background: radial-gradient(400px circle at var(--mx, 50%) var(--my, 50%), rgba(38, 208, 255, .18), transparent 60%);
  opacity: 0; transition: opacity .4s;
}
.biz-card:hover::after { opacity: 1; }
.biz-card:hover {
  transform: translateY(-6px);
  border-color: rgba(38, 208, 255, .55);
  box-shadow: 0 28px 60px rgba(0, 12, 40, .5), inset 0 1px 0 rgba(255, 255, 255, .25);
}
.biz-tag {
  display: inline-block; align-self: flex-start;
  font-size: 11px; letter-spacing: .35em; color: #26d0ff; font-weight: 600;
  padding: 6px 12px; border-radius: 99px;
  background: rgba(38, 208, 255, .12); border: 1px solid rgba(38, 208, 255, .28);
}
.biz-card-alt .biz-tag { color: #b08aff; background: rgba(124, 92, 255, .12); border-color: rgba(124, 92, 255, .35); }
.biz-title { font-size: 34px; font-weight: 700; margin: 18px 0 6px; letter-spacing: -.01em; }
.biz-sub { color: #b9e6ff; margin: 0 0 18px; font-size: 14px; letter-spacing: .15em; }
.biz-desc { color: var(--c-text-dim); margin: 0 0 22px; font-size: 15px; line-height: 1.85; }
.biz-list { list-style: none; padding: 0; margin: 0 0 28px; color: var(--c-text-dim); font-size: 14px; }
.biz-list li { padding: 6px 0; }
.biz-link {
  margin-top: auto; align-self: flex-start;
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 22px; border-radius: 99px; font-size: 14px;
  background: rgba(255, 255, 255, .05);
  border: 1px solid rgba(255, 255, 255, .15);
  transition: all .35s var(--ease-out);
}
.biz-link:hover { background: var(--grad-primary); border-color: transparent; box-shadow: 0 10px 30px rgba(38, 208, 255, .4); transform: translateX(2px); }
.biz-link svg { transition: transform .35s; }
.biz-link:hover svg { transform: translateX(4px); }

.biz-shine {
  position: absolute; top: -50%; left: -30%; width: 60%; height: 200%;
  background: linear-gradient(120deg, transparent, rgba(255, 255, 255, .08), transparent);
  transform: rotate(20deg);
  animation: shine 6s ease-in-out infinite;
  pointer-events: none;
}
@keyframes shine {
  0% { left: -50%; opacity: 0; }
  20% { opacity: 1; }
  60% { left: 130%; opacity: 0; }
  100% { left: 130%; opacity: 0; }
}

/* ============================================================
 * 核心价值
 * ============================================================ */
.section-values { background: linear-gradient(180deg, #060a18 0%, #0a1330 100%); }
.value-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.value-card {
  padding: 38px 32px;
  text-align: left;
  transition: transform .5s var(--ease-emph), border-color .5s;
}
.value-card:hover { transform: translateY(-6px); border-color: rgba(38, 208, 255, .45); }
.value-ico {
  width: 54px; height: 54px;
  display: grid; place-items: center; border-radius: 14px;
  background: linear-gradient(135deg, rgba(38, 208, 255, .18), rgba(124, 92, 255, .12));
  border: 1px solid rgba(255, 255, 255, .14);
  color: #26d0ff; margin-bottom: 22px;
  box-shadow: 0 8px 24px rgba(38, 208, 255, .2);
}
.value-ico svg { width: 28px; height: 28px; }
.value-card h4 { font-size: 22px; margin: 0 0 10px; font-weight: 600; }
.value-card p { color: var(--c-text-dim); margin: 0; font-size: 14.5px; line-height: 1.85; }
.value-line {
  display: block; width: 32px; height: 2px; margin-top: 22px;
  background: var(--grad-primary); border-radius: 2px;
  transition: width .5s var(--ease-emph);
}
.value-card:hover .value-line { width: 80px; }

/* ============================================================
 * 新闻
 * ============================================================ */
.section-news { background: linear-gradient(180deg, #0a1330 0%, #060a18 100%); }
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.news-card {
  display: flex; flex-direction: column;
  transition: transform .5s var(--ease-emph), border-color .5s;
}
.news-card:hover { transform: translateY(-6px); border-color: rgba(38, 208, 255, .55); }
.news-cover {
  height: 180px;
  position: relative; overflow: hidden;
  background: var(--bg, linear-gradient(135deg, #1a78ff, #7ecbff));
}
.news-cover .news-art {
  position: absolute; inset: 0; width: 100%; height: 100%;
  display: block;
  transition: transform .8s var(--ease-emph), filter .6s;
  filter: saturate(1.05);
}
.news-card:hover .news-cover .news-art {
  transform: scale(1.06);
  filter: saturate(1.2) brightness(1.05);
}
.news-cover::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(circle at 25% 20%, rgba(255, 255, 255, .25), transparent 45%),
    linear-gradient(180deg, transparent 60%, rgba(0, 8, 30, .35));
  mix-blend-mode: screen;
}
.news-body { padding: 22px 24px 26px; }
.news-tag {
  display: inline-block; font-size: 12px; padding: 3px 10px; border-radius: 99px;
  background: rgba(38, 208, 255, .15); color: #b9e6ff;
  border: 1px solid rgba(38, 208, 255, .25);
  margin-bottom: 12px;
}
.news-card h4 { margin: 0 0 8px; font-size: 17px; font-weight: 600; line-height: 1.5; }
.news-card p { color: var(--c-text-dim); margin: 0; font-size: 14px; line-height: 1.75; }
.news-meta { display: flex; justify-content: space-between; margin-top: 18px; font-size: 13px; color: var(--c-text-mute); }
.news-meta span { color: #26d0ff; transition: transform .3s; }
.news-card:hover .news-meta span { transform: translateX(4px); }

/* ============================================================
 * 加入我们
 * ============================================================ */
.section-join { background: linear-gradient(180deg, #060a18 0%, #0a1330 100%); }
.join-wrap {
  display: grid; grid-template-columns: 1fr 1fr; gap: 40px;
  padding: 56px 56px;
  overflow: hidden;
}
.join-right { overflow: visible; }
.join-left .section-eyebrow { display: block; margin-bottom: 14px; }
.join-left .section-title { text-align: left; margin: 0 0 14px; font-size: clamp(28px, 3vw, 40px); }
.join-left .section-desc { text-align: left; color: var(--c-text-dim); margin-bottom: 26px; }
.join-jobs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 32px; }
.join-jobs span {
  font-size: 13px; padding: 7px 14px; border-radius: 99px;
  background: rgba(255, 255, 255, .04);
  border: 1px solid rgba(255, 255, 255, .12);
  color: var(--c-text-dim);
  transition: all .3s var(--ease-out);
}
.join-jobs span:hover { color: #fff; border-color: rgba(38, 208, 255, .55); background: rgba(38, 208, 255, .1); transform: translateY(-2px); }

.join-right { position: relative; min-height: 300px; }
.join-card-deck { position: relative; width: 100%; height: 100%; }
.deck-card {
  position: absolute;
  width: 70%; padding: 22px 26px;
  border-radius: 18px;
  background: linear-gradient(160deg, rgba(255, 255, 255, .14), rgba(255, 255, 255, .04));
  border: 1px solid rgba(255, 255, 255, .18);
  backdrop-filter: blur(20px);
  box-shadow: 0 18px 50px rgba(0, 8, 30, .4);
  display: flex; flex-direction: column; gap: 4px;
  transition: transform .5s var(--ease-emph);
}
.deck-card span { font-size: 11px; letter-spacing: .3em; color: #b9e6ff; }
.deck-card strong { font-size: 28px; font-weight: 700;
  background: var(--grad-primary); -webkit-background-clip: text; background-clip: text; color: transparent; }
.deck-card em { font-style: normal; font-size: 13px; color: var(--c-text-dim); }
.deck-card { width: 62%; }
.deck-1 { top: 6%; left: 6%; transform: rotate(-5deg); }
.deck-2 { top: 32%; right: 8%; transform: rotate(4deg); }
.deck-3 { bottom: 6%; left: 18%; transform: rotate(-2deg); }
.join-right:hover .deck-1 { transform: rotate(-2deg) translateY(-8px); }
.join-right:hover .deck-2 { transform: rotate(7deg) translateY(-8px); }
.join-right:hover .deck-3 { transform: rotate(-5deg) translateY(-8px); }

/* ============================================================
 * 联系我们
 * ============================================================ */
.section-contact { background: linear-gradient(180deg, #0a1330 0%, #060a18 100%); }
.contact-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 28px; }
.contact-info { padding: 36px 32px; display: flex; flex-direction: column; gap: 22px; }
.contact-row { display: flex; gap: 16px; align-items: flex-start; }
.contact-ico {
  width: 44px; height: 44px; flex-shrink: 0;
  display: grid; place-items: center; border-radius: 12px;
  background: linear-gradient(135deg, rgba(38, 208, 255, .18), rgba(124, 92, 255, .12));
  border: 1px solid rgba(255, 255, 255, .14);
  color: #26d0ff;
}
.contact-ico svg { width: 22px; height: 22px; }
.contact-label { font-size: 12px; color: var(--c-text-mute); letter-spacing: .15em; }
.contact-row p { margin: 4px 0 0; font-size: 16px; color: var(--c-text); }

.contact-form { padding: 36px 32px; display: flex; flex-direction: column; gap: 18px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-row-full { display: block; }
.contact-form label { display: flex; flex-direction: column; gap: 8px; font-size: 13px; color: var(--c-text-dim); }
.contact-form input,
.contact-form select,
.contact-form textarea {
  padding: 13px 16px; border-radius: 12px;
  background: rgba(255, 255, 255, .04);
  border: 1px solid rgba(255, 255, 255, .12);
  color: #fff; font-size: 14.5px;
  transition: all .3s var(--ease-out);
}
.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  outline: none; border-color: rgba(38, 208, 255, .65);
  background: rgba(38, 208, 255, .06);
  box-shadow: 0 0 0 4px rgba(38, 208, 255, .12);
}
.contact-form textarea { resize: vertical; min-height: 100px; }
.contact-form select option { background: #0a1330; color: #fff; }
.form-submit { align-self: flex-start; margin-top: 6px; }

/* ============================================================
 * Footer
 * ============================================================ */
.footer {
  background: linear-gradient(180deg, #060a18 0%, #03060f 100%);
  border-top: 1px solid rgba(255, 255, 255, .06);
  padding: 60px 0 0;
}
.footer-inner {
  display: grid; grid-template-columns: 1.4fr repeat(3, 1fr); gap: 32px;
  padding-bottom: 40px;
}
.footer-brand { display: flex; align-items: flex-start; gap: 14px; }
.footer-brand img { width: 44px; filter: drop-shadow(0 4px 14px rgba(38, 208, 255, .55)); }
.footer-brand h5 {
  margin: 0 0 6px; font-size: 18px; font-weight: 700;
  display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap;
}
.footer-brand h5 span {
  background: linear-gradient(135deg, #fff, #b9e6ff);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.footer-brand h5 em {
  font-style: normal; font-size: 12px; font-weight: 500;
  color: var(--c-text-mute); letter-spacing: .25em;
}
.footer-brand p { margin: 0; color: var(--c-text-mute); font-size: 13px; }
.footer-col { display: flex; flex-direction: column; gap: 10px; }
.footer-col h6 { margin: 0 0 8px; font-size: 14px; color: var(--c-text); letter-spacing: .1em; font-weight: 600; }
.footer-col a { color: var(--c-text-mute); font-size: 13.5px; transition: color .3s; }
.footer-col a:hover { color: #26d0ff; }

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .06);
  padding: 22px 24px;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px;
  font-size: 12.5px; color: var(--c-text-mute);
  width: min(100% - 48px, var(--container)); margin: 0 auto;
}

/* ============================================================
 * 返回顶部
 * ============================================================ */
.to-top {
  position: fixed; bottom: 30px; right: 30px; z-index: 90;
  width: 44px; height: 44px; border-radius: 50%;
  display: grid; place-items: center;
  background: linear-gradient(135deg, rgba(38, 208, 255, .25), rgba(124, 92, 255, .25));
  border: 1px solid rgba(38, 208, 255, .45);
  backdrop-filter: blur(12px);
  color: #fff; opacity: 0; visibility: hidden; transform: translateY(10px);
  transition: all .35s var(--ease-out);
  box-shadow: 0 10px 30px rgba(38, 208, 255, .25);
}
.to-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
.to-top:hover { transform: translateY(-3px); box-shadow: 0 14px 40px rgba(38, 208, 255, .45); }

/* ============================================================
 * 响应式
 * ============================================================ */
@media (max-width: 1280px) {
  .nav-logo-text { display: none; }
  .nav-menu { gap: 2px; }
  .nav-menu a { padding: 7px 11px; font-size: 13.5px; }
  .lang-switch { padding: 7px 10px; font-size: 12.5px; }
  .btn-glass { padding: 8px 16px; font-size: 13.5px; }
}
@media (max-width: 1080px) {
  .stats { grid-template-columns: repeat(4, 1fr); gap: 14px; }
  .stat-card { padding: 26px 16px; }
  .stat-num { font-size: 36px; }
  .biz-grid { grid-template-columns: 1fr; }
  .value-grid { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: 1fr 1fr; }
  .join-wrap { grid-template-columns: 1fr; padding: 40px 32px; }
  .join-right { min-height: 240px; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .hero-inner { grid-template-columns: 1fr; gap: 20px; }
  .hero-logo-3d { max-width: 360px; margin: 0 auto; }
}
@media (max-width: 980px) {
  .nav-menu {
    position: fixed; top: var(--header-h); right: 0; left: 0;
    flex-direction: column; align-items: stretch;
    padding: 18px 24px;
    background: rgba(8, 14, 36, .92);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, .08);
    transform: translateY(-12px); opacity: 0; visibility: hidden;
    transition: all .3s var(--ease-out);
  }
  .nav-menu.open { transform: translateY(0); opacity: 1; visibility: visible; }
  .nav-menu a { padding: 12px 14px; font-size: 15px; }
  .nav-burger { display: flex; }
  .stats { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 760px) {
  :root { --header-h: 64px; }
  .btn-glass.btn-primary { display: none; }
  .lang-switch span { display: none; }
  .lang-switch { padding: 8px; }

  .news-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-bottom { justify-content: center; text-align: center; }
  .deck-card { width: 80%; }
  .biz-card { padding: 32px 24px; min-height: auto; }
  .biz-title { font-size: 28px; }
  .join-wrap { padding: 32px 22px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
  }
}