/* ============================================================
   北京芯能量科技有限公司 · 企业官网
   Core Energy Technology Co., Ltd.
   多模态情绪感知具身AI · 简约大气 / 深色科技感
   ============================================================ */

:root {
  --c-primary: #1d5cff;
  --c-blue-l: #5b9bff;
  --c-cyan: #35e6f5;
  --c-cyan-d: #00b8d4;
  --c-violet: #6c5ce7;
  --c-ink: #0c1526;
  --c-ink-2: #3b4658;
  --c-ink-3: #79839a;
  --c-line: #e6ebf3;
  --c-bg: #ffffff;
  --c-bg-soft: #f5f8fd;
  --c-dark: #060b18;
  --c-dark-2: #0b1730;
  --grad: linear-gradient(120deg, #1d5cff 0%, #00b8d4 100%);
  --grad-text: linear-gradient(110deg, #7db2ff 0%, #35e6f5 100%);
  --grad-soft: linear-gradient(120deg, rgba(29, 92, 255, .08), rgba(0, 184, 212, .08));
  --grad-dark: linear-gradient(150deg, #071022 0%, #0b1730 45%, #0a2f7d 100%);
  --radius: 18px;
  --shadow: 0 12px 40px rgba(12, 30, 80, .08);
  --shadow-hover: 0 22px 60px rgba(12, 30, 80, .16);
  --nav-h: 74px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Helvetica Neue", Arial, sans-serif;
  color: var(--c-ink); background: var(--c-bg); line-height: 1.75;
  -webkit-font-smoothing: antialiased; overflow-x: hidden;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }
.container { width: min(1200px, 92%); margin: 0 auto; }

/* ============ 导航 ============ */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 200;
  height: var(--nav-h); background: rgba(255, 255, 255, .9);
  backdrop-filter: blur(18px); border-bottom: 1px solid var(--c-line);
  transition: box-shadow .3s;
}
.nav.scrolled { box-shadow: 0 6px 26px rgba(12, 30, 80, .07); }
.nav-inner { height: 100%; display: flex; align-items: center; justify-content: space-between; }
.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark {
  width: 40px; height: 40px; border-radius: 11px; background: var(--grad);
  display: grid; place-items: center; color: #fff; font-weight: 800; font-size: 19px;
  box-shadow: 0 6px 18px rgba(29, 92, 255, .35);
}
.brand-name { font-size: 18px; font-weight: 700; letter-spacing: .5px; }
.brand-name small {
  display: block; font-size: 9.5px; font-weight: 500; color: var(--c-ink-3);
  letter-spacing: 1.6px; line-height: 1.3;
}
.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-links a { padding: 8px 18px; border-radius: 999px; font-size: 15px; color: var(--c-ink-2); transition: all .25s; }
.nav-links a:hover { color: var(--c-primary); background: rgba(29, 92, 255, .06); }
.nav-links a.active { color: #fff; background: var(--grad); box-shadow: 0 6px 16px rgba(29, 92, 255, .3); }
.nav-toggle { display: none; }

/* ============ 首屏（深色） ============ */
.hero-dark {
  position: relative; overflow: hidden; background: var(--grad-dark);
  color: #fff; padding: calc(var(--nav-h) + 80px) 0 90px;
}
.hero-dark::before {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(120, 170, 255, .07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120, 170, 255, .07) 1px, transparent 1px);
  background-size: 52px 52px;
  mask-image: radial-gradient(1000px 620px at 60% 40%, #000 25%, transparent 78%);
}
.hero-dark::after {
  content: ""; position: absolute; width: 720px; height: 720px; border-radius: 50%;
  right: -220px; top: -220px;
  background: radial-gradient(circle, rgba(0, 184, 212, .22), transparent 62%);
  filter: blur(10px);
}
.hero-dark .container { position: relative; z-index: 2; }

.hero-badge {
  display: inline-flex; align-items: center; gap: 9px;
  font-size: 13px; font-weight: 600; color: #bcd8ff;
  background: rgba(255, 255, 255, .07); border: 1px solid rgba(120, 180, 255, .28);
  padding: 8px 20px; border-radius: 999px; margin-bottom: 30px;
  backdrop-filter: blur(6px);
}
.hero-badge .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--c-cyan); animation: pulse 2.2s infinite; }
@keyframes pulse { 0%,100% { box-shadow: 0 0 0 0 rgba(53, 230, 245, .5); } 50% { box-shadow: 0 0 0 9px rgba(53, 230, 245, 0); } }

.hero-title { font-size: 56px; font-weight: 700; line-height: 1.26; letter-spacing: 1.5px; }
.hero-title .g {
  background: var(--grad-text); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-sub { color: #a7b6d6; font-size: 17px; margin: 22px 0 40px; max-width: 560px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-meta { display: flex; flex-wrap: wrap; gap: 14px 30px; margin-top: 46px; padding-top: 30px; border-top: 1px solid rgba(255, 255, 255, .1); }
.hero-meta span { font-size: 13.5px; color: #8fa0c2; display: flex; align-items: center; gap: 8px; }
.hero-meta span::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--c-cyan); }

.hero-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 56px; align-items: center; }

/* 感知视觉球 */
.sense { position: relative; height: 420px; }
.sense .core {
  position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%);
  width: 170px; height: 170px; border-radius: 50%;
  background: radial-gradient(circle at 34% 28%, #5b9bff, #0b2f8a 72%);
  box-shadow: 0 24px 70px rgba(29, 92, 255, .5), inset -14px -14px 40px rgba(0, 0, 0, .35);
  display: grid; place-items: center; text-align: center;
}
.sense .core b { display: block; font-size: 15px; letter-spacing: 1px; }
.sense .core i { font-style: normal; font-size: 11px; color: #bcd8ff; letter-spacing: 1.5px; }
.ring {
  position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%);
  border: 1px solid rgba(120, 180, 255, .22); border-radius: 50%;
}
.ring.r1 { width: 260px; height: 260px; animation: spin 30s linear infinite; }
.ring.r2 { width: 350px; height: 350px; border-style: dashed; animation: spin 46s linear infinite reverse; }
.ring.r3 { width: 430px; height: 430px; border-color: rgba(120, 180, 255, .12); }
.ring .sat {
  position: absolute; top: -7px; left: 50%; width: 14px; height: 14px; border-radius: 50%;
  background: var(--c-cyan); box-shadow: 0 0 16px rgba(53, 230, 245, .9);
}
.ring.r2 .sat { background: #7db2ff; box-shadow: 0 0 16px rgba(125, 178, 255, .9); }
@keyframes spin { to { transform: translate(-50%, -50%) rotate(360deg); } }
.m-chips { position: absolute; inset: 0; }
.m-chip {
  position: absolute; font-size: 12.5px; padding: 7px 14px; border-radius: 999px;
  background: rgba(255, 255, 255, .09); border: 1px solid rgba(140, 190, 255, .28);
  color: #d6e5ff; backdrop-filter: blur(8px); white-space: nowrap;
  animation: bob 6s ease-in-out infinite;
}
.m-chip.c1 { top: 6%; left: 2%; }
.m-chip.c2 { top: 20%; right: 0; animation-delay: -1s; }
.m-chip.c3 { top: 46%; left: -4%; animation-delay: -2s; }
.m-chip.c4 { bottom: 22%; right: -2%; animation-delay: -3s; }
.m-chip.c5 { bottom: 4%; left: 8%; animation-delay: -4s; }
.m-chip.c6 { bottom: 8%; right: 16%; animation-delay: -5s; }
@keyframes bob { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-11px); } }

/* ============ 内页页头 ============ */
.page-head {
  position: relative; overflow: hidden; background: var(--grad-dark);
  color: #fff; padding: calc(var(--nav-h) + 76px) 0 74px;
}
.page-head::before {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(120, 170, 255, .06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120, 170, 255, .06) 1px, transparent 1px);
  background-size: 50px 50px;
  mask-image: radial-gradient(900px 420px at 30% 60%, #000 20%, transparent 80%);
}
.page-head::after {
  content: ""; position: absolute; width: 520px; height: 520px; border-radius: 50%;
  right: -160px; bottom: -260px;
  background: radial-gradient(circle, rgba(0, 184, 212, .2), transparent 62%);
}
.page-head .container { position: relative; z-index: 2; }
.page-head h1 { font-size: 44px; font-weight: 700; letter-spacing: 2px; }
.page-head .crumb { margin-top: 14px; color: #8fa0c2; font-size: 14px; }
.page-head .crumb b { color: var(--c-cyan); font-weight: 600; }
.page-head .en { font-size: 12px; letter-spacing: 4px; color: #6b82ab; margin-bottom: 14px; }

/* ============ 通用区块 ============ */
.section { padding: 100px 0; }
.section-soft { background: var(--c-bg-soft); }
.section-dark { background: var(--c-dark-2); color: #fff; position: relative; overflow: hidden; }
.section-dark::before {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(120, 170, 255, .05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120, 170, 255, .05) 1px, transparent 1px);
  background-size: 50px 50px;
  mask-image: radial-gradient(900px 500px at 50% 50%, #000 20%, transparent 80%);
}
.section-dark .container { position: relative; z-index: 2; }

.sec-head { text-align: center; max-width: 760px; margin: 0 auto 62px; }
.sec-head.left { text-align: left; margin-left: 0; }
.sec-tag {
  display: inline-flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 600;
  color: var(--c-primary); background: rgba(29, 92, 255, .08);
  border: 1px solid rgba(29, 92, 255, .18); padding: 6px 17px; border-radius: 999px; margin-bottom: 18px;
}
.sec-tag::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--grad); }
.section-dark .sec-tag { color: #7deeff; background: rgba(53, 230, 245, .1); border-color: rgba(53, 230, 245, .3); }
.section-dark .sec-tag::before { background: var(--c-cyan); }
.sec-title { font-size: 36px; font-weight: 700; letter-spacing: 1px; line-height: 1.42; }
.section-dark .sec-title { color: #fff; }
.sec-title .g { background: var(--grad-text); -webkit-background-clip: text; background-clip: text; color: transparent; }
.sec-desc { color: var(--c-ink-3); margin-top: 16px; font-size: 16px; }
.section-dark .sec-desc { color: #93a2c2; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  padding: 14px 36px; border-radius: 999px; font-size: 15px; font-weight: 600;
  transition: all .3s; cursor: pointer; border: none;
}
.btn-primary { color: #fff; background: linear-gradient(120deg, #2b6bff, #00c2e0); box-shadow: 0 10px 30px rgba(29, 92, 255, .38); }
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 18px 40px rgba(29, 92, 255, .5); }
.btn-ghost { color: #cfe0ff; border: 1.5px solid rgba(140, 190, 255, .4); background: rgba(255, 255, 255, .05); }
.btn-ghost:hover { background: rgba(140, 190, 255, .14); transform: translateY(-3px); }
.btn-line { color: var(--c-primary); border: 1.5px solid rgba(29, 92, 255, .38); background: #fff; }
.btn-line:hover { background: rgba(29, 92, 255, .06); transform: translateY(-3px); }

/* ============ 卡片 ============ */
.card {
  background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius);
  padding: 34px 30px; transition: all .32s; position: relative; overflow: hidden;
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); border-color: rgba(29, 92, 255, .28); }
.card h3 { font-size: 19px; margin-bottom: 10px; }
.card p { color: var(--c-ink-3); font-size: 14.5px; }
.card .ico {
  width: 52px; height: 52px; border-radius: 14px; display: grid; place-items: center;
  background: var(--grad-soft); color: var(--c-primary); margin-bottom: 20px;
}
.card .num {
  position: absolute; right: 20px; top: 12px; font-size: 54px; font-weight: 800;
  color: rgba(29, 92, 255, .07); font-family: Georgia, serif; line-height: 1;
}
.card-dark {
  background: rgba(255, 255, 255, .045); border: 1px solid rgba(140, 190, 255, .16);
  border-radius: var(--radius); padding: 32px 28px; transition: all .32s;
}
.card-dark:hover { background: rgba(255, 255, 255, .08); border-color: rgba(53, 230, 245, .4); transform: translateY(-6px); }
.card-dark h3 { color: #fff; font-size: 18px; margin-bottom: 10px; }
.card-dark p { color: #93a2c2; font-size: 14.5px; }
.card-dark .ico { width: 50px; height: 50px; border-radius: 14px; display: grid; place-items: center; background: rgba(53, 230, 245, .12); color: var(--c-cyan); margin-bottom: 18px; }

.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

/* ============ 数据带 ============ */
.stats-band { background: var(--c-dark); padding: 58px 0; position: relative; overflow: hidden; }
.stats-band::after {
  content: ""; position: absolute; width: 600px; height: 600px; border-radius: 50%;
  left: 50%; top: -420px; transform: translateX(-50%);
  background: radial-gradient(circle, rgba(29, 92, 255, .3), transparent 62%);
}
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; text-align: center; position: relative; z-index: 1; }
.stat .num { font-size: 40px; font-weight: 700; font-family: Georgia, serif; line-height: 1.2; }
.stat .num em { font-style: normal; background: var(--grad-text); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stat .label { color: #8b96ab; font-size: 13.5px; margin-top: 4px; }

/* ============ 模型定位对比 ============ */
.duel { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; align-items: stretch; }
.duel-box { border-radius: var(--radius); padding: 34px 32px; border: 1px solid rgba(140, 190, 255, .16); background: rgba(255, 255, 255, .04); }
.duel-box.hi {
  border-color: rgba(53, 230, 245, .45);
  background: linear-gradient(150deg, rgba(29, 92, 255, .16), rgba(0, 184, 212, .1));
  box-shadow: 0 20px 60px rgba(29, 92, 255, .18);
}
.duel-box .k { font-size: 11.5px; letter-spacing: 2.5px; color: #6b82ab; margin-bottom: 10px; }
.duel-box.hi .k { color: var(--c-cyan); }
.duel-box h3 { font-size: 21px; color: #fff; margin-bottom: 12px; }
.duel-box p { color: #93a2c2; font-size: 14.5px; }
.duel-box .quote {
  margin-top: 20px; padding-top: 18px; border-top: 1px solid rgba(255, 255, 255, .1);
  color: #7deeff; font-size: 15px; font-weight: 600;
}

/* ============ 六模态 ============ */
.modality-wrap { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.mod-col { background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius); padding: 30px 26px; }
.mod-col .mh { display: flex; align-items: center; gap: 12px; margin-bottom: 20px; }
.mod-col .mh .idx {
  width: 38px; height: 38px; border-radius: 11px; background: var(--grad); color: #fff;
  display: grid; place-items: center; font-size: 14px; font-weight: 700; font-family: Georgia, serif;
}
.mod-col .mh b { font-size: 17px; }
.mod-item { padding: 14px 0; border-top: 1px dashed var(--c-line); }
.mod-item:first-of-type { border-top: none; }
.mod-item b { display: block; font-size: 15px; }
.mod-item span { font-size: 13px; color: var(--c-ink-3); }
.fusion-bar {
  margin-top: 26px; border-radius: var(--radius); padding: 26px 34px;
  background: var(--grad-dark); color: #fff; display: flex; align-items: center;
  justify-content: space-between; gap: 24px; flex-wrap: wrap;
}
.fusion-bar b { font-size: 19px; }
.fusion-bar span { font-size: 13.5px; color: #93a2c2; }

/* ============ 闭环流程 ============ */
.loop { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; position: relative; }
.loop-step {
  position: relative; border-radius: var(--radius); padding: 30px 26px;
  background: rgba(255, 255, 255, .05); border: 1px solid rgba(140, 190, 255, .16);
  transition: all .32s;
}
.loop-step:hover { border-color: rgba(53, 230, 245, .45); background: rgba(255, 255, 255, .09); transform: translateY(-6px); }
.loop-step .n {
  font-size: 12px; font-weight: 700; letter-spacing: 2px; color: var(--c-cyan);
  font-family: Georgia, serif; margin-bottom: 12px;
}
.loop-step h3 { color: #fff; font-size: 17.5px; margin-bottom: 8px; }
.loop-step p { color: #93a2c2; font-size: 13.5px; }
.loop-step::after {
  content: "→"; position: absolute; right: -14px; top: 50%; transform: translateY(-50%);
  color: rgba(140, 190, 255, .5); font-size: 18px;
}
.loop-step:last-child::after { display: none; }

/* ============ 产品矩阵 ============ */
.prod-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.prod-card {
  border-radius: var(--radius); border: 1px solid var(--c-line); background: #fff;
  overflow: hidden; transition: all .32s; display: flex; flex-direction: column;
}
.prod-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); border-color: rgba(29, 92, 255, .28); }
.prod-top { padding: 30px 28px 24px; color: #fff; position: relative; overflow: hidden; }
.prod-top.p1 { background: linear-gradient(145deg, #2b2f6b, #6c5ce7); }
.prod-top.p2 { background: linear-gradient(145deg, #0d1730, #16409e); }
.prod-top.p3 { background: linear-gradient(145deg, #0a2e4a, #0087a8); }
.prod-top::after {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, .06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .06) 1px, transparent 1px);
  background-size: 34px 34px;
}
.prod-top .badge {
  position: relative; z-index: 1; display: inline-block; font-size: 12px; font-weight: 600;
  padding: 5px 14px; border-radius: 999px; margin-bottom: 16px;
  background: rgba(255, 255, 255, .16); border: 1px solid rgba(255, 255, 255, .3);
}
.prod-top .badge.live { background: rgba(53, 230, 245, .22); border-color: rgba(53, 230, 245, .6); color: #b6f7ff; }
.prod-top h3 { position: relative; z-index: 1; font-size: 22px; margin-bottom: 8px; }
.prod-top p { position: relative; z-index: 1; font-size: 13.5px; color: rgba(255, 255, 255, .78); }
.prod-body { padding: 26px 28px 30px; flex: 1; display: flex; flex-direction: column; }
.prod-body .row { display: flex; gap: 12px; padding: 11px 0; font-size: 14px; color: var(--c-ink-2); align-items: flex-start; }
.prod-body .row svg { flex: 0 0 18px; margin-top: 4px; color: var(--c-primary); }
.prod-body .foot { margin-top: auto; padding-top: 18px; font-size: 13px; color: var(--c-ink-3); border-top: 1px solid var(--c-line); }
.prod-body .foot b { color: var(--c-primary); }

/* ============ 场景（图片墙） ============ */
.scene-wall { display: grid; grid-template-columns: repeat(6, 1fr); grid-auto-rows: 310px; gap: 20px; }
.scene-item {
  position: relative; grid-column: span 2; margin: 0; overflow: hidden; cursor: zoom-in;
  border-radius: var(--radius); background: #0b1730; border: 1px solid rgba(12, 30, 80, .08);
  box-shadow: 0 16px 40px rgba(12, 30, 80, .12);
}
.scene-item.wide { grid-column: span 4; }
.scene-item img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .8s cubic-bezier(.2, .7, .3, 1); }
.scene-item:hover img { transform: scale(1.055); }
.scene-item::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(to top, rgba(5, 12, 30, .93) 0%, rgba(5, 12, 30, .62) 34%, rgba(5, 12, 30, .06) 74%);
  transition: opacity .4s;
}
.scene-item figcaption { position: absolute; left: 0; right: 0; bottom: 0; z-index: 2; padding: 26px 26px 24px; color: #fff; }
.scene-item .si-no {
  display: inline-block; margin-bottom: 9px; font: 700 11.5px/1 Georgia, serif;
  letter-spacing: 1.4px; color: #82d2ff;
}
.scene-item h3 { font-size: 19px; margin-bottom: 8px; }
.scene-item p { font-size: 13.5px; line-height: 1.7; color: rgba(255, 255, 255, .8); max-width: 52ch; }
.scene-item .si-zoom {
  position: absolute; top: 16px; right: 16px; z-index: 2; display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 12px; border-radius: 999px; font-size: 12px; color: #fff;
  background: rgba(8, 18, 42, .58); border: 1px solid rgba(255, 255, 255, .24);
  -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px);
  opacity: 0; transform: translateY(-5px); transition: all .35s;
}
.scene-item:hover .si-zoom, .scene-item:focus-visible .si-zoom { opacity: 1; transform: none; }
.scene-item:focus-visible { outline: 2px solid var(--c-primary); outline-offset: 3px; }
.scene-item:focus-visible img { transform: scale(1.055); }

/* 场景（横向三图） */
.scene-row { display: grid; grid-template-columns: repeat(3, 1fr); grid-auto-rows: 350px; gap: 20px; }
.scene-row .scene-item, .scene-row .scene-item.wide { grid-column: span 1; }

/* ============ 壁垒 / 编号列表 ============ */
.num-list { display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px; }
/* 四列变体（发展规划）：用 class 而非内联样式，保证响应式断点能覆盖 */
.num-list-4 { grid-template-columns: repeat(4, 1fr); }
.num-list > *, .num-list-4 > * { min-width: 0; }
.num-item { padding: 26px 22px; border-radius: var(--radius); background: #fff; border: 1px solid var(--c-line); transition: all .3s; }
.num-item:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); border-color: rgba(29, 92, 255, .28); }
.num-item .no { font-size: 13px; font-weight: 700; color: var(--c-primary); font-family: Georgia, serif; letter-spacing: 1px; }
.num-item h3 { font-size: 15.5px; margin: 10px 0 8px; }
.num-item p { font-size: 13px; color: var(--c-ink-3); }

/* ============ 对比表 ============ */
.table-wrap { overflow-x: auto; border-radius: var(--radius); border: 1px solid var(--c-line); background: #fff; }
table.cmp { width: 100%; border-collapse: collapse; min-width: 720px; }
table.cmp th, table.cmp td { padding: 18px 22px; text-align: left; font-size: 14.5px; vertical-align: top; }
table.cmp thead th {
  background: var(--c-bg-soft); font-size: 13.5px; font-weight: 700; color: var(--c-ink-2);
  letter-spacing: .5px; border-bottom: 1px solid var(--c-line);
}
table.cmp tbody tr + tr td { border-top: 1px solid var(--c-line); }
table.cmp tbody tr:hover td { background: rgba(29, 92, 255, .025); }
table.cmp td:first-child { font-weight: 600; }
table.cmp tr.hl td { background: rgba(29, 92, 255, .05); }
table.cmp tr.hl td:first-child { color: var(--c-primary); }

/* ============ 团队 ============ */
.team-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px; }
.team-card {
  display: flex; gap: 22px; background: #fff; border: 1px solid var(--c-line);
  border-radius: var(--radius); padding: 30px; transition: all .32s;
}
.team-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); border-color: rgba(29, 92, 255, .28); }
.team-av {
  flex: 0 0 62px; height: 62px; border-radius: 18px; display: grid; place-items: center;
  background: var(--grad-dark); color: #fff; font-size: 20px; font-weight: 700; letter-spacing: 1px;
  box-shadow: 0 10px 26px rgba(11, 47, 138, .28);
}
.team-card h3 { font-size: 18px; }
.team-card .role { font-size: 13px; color: var(--c-primary); font-weight: 600; margin: 2px 0 10px; }
.team-card p { font-size: 13.5px; color: var(--c-ink-3); }
.team-card .resp {
  margin-top: 12px; padding-top: 12px; border-top: 1px dashed var(--c-line);
  font-size: 13px; color: var(--c-ink-2);
}
.team-card .resp b { color: var(--c-primary); font-weight: 600; }

/* ============ 实验室 / 伙伴 ============ */
.partner-row { display: flex; flex-wrap: wrap; justify-content: center; gap: 14px; margin-top: 40px; }
.partner-row span {
  padding: 12px 24px; border-radius: 999px; font-size: 14px;
  background: rgba(255, 255, 255, .06); border: 1px solid rgba(140, 190, 255, .2); color: #d6e5ff;
  transition: all .3s;
}
.partner-row span:hover { border-color: rgba(53, 230, 245, .5); color: #7deeff; transform: translateY(-3px); }
.partner-row.plain span { background: #fff; border-color: var(--c-line); color: var(--c-ink-2); }
.partner-row.plain span:hover { border-color: rgba(29, 92, 255, .35); color: var(--c-primary); }

/* ============ 时间轴 ============ */
.timeline { position: relative; max-width: 880px; margin: 0 auto; padding-left: 38px; }
.timeline::before { content: ""; position: absolute; left: 8px; top: 8px; bottom: 8px; width: 2px; background: linear-gradient(180deg, #1d5cff, #00b8d4); }
.tl-item { position: relative; padding-bottom: 44px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-item::before {
  content: ""; position: absolute; left: -38px; top: 6px; width: 16px; height: 16px; border-radius: 50%;
  background: #fff; border: 3px solid var(--c-primary); box-shadow: 0 0 0 5px rgba(29, 92, 255, .12);
}
.tl-item .when { font-size: 14px; font-weight: 700; color: var(--c-primary); font-family: Georgia, serif; letter-spacing: .5px; }
.tl-item h3 { font-size: 18px; margin: 6px 0; }
.tl-item p { font-size: 14.5px; color: var(--c-ink-3); max-width: 660px; }

/* ============ 能力对比（双栏） ============ */
.vs-list { border-radius: var(--radius); overflow: hidden; border: 1px solid var(--c-line); background: #fff; }
.vs-row { display: grid; grid-template-columns: 150px 1fr 1fr; }
.vs-row + .vs-row { border-top: 1px solid var(--c-line); }
.vs-row > div { padding: 20px 24px; font-size: 14px; }
.vs-row .k { font-weight: 700; background: var(--c-bg-soft); font-size: 14.5px; }
.vs-row .a { color: var(--c-ink-3); }
.vs-row .b { color: var(--c-ink); background: rgba(29, 92, 255, .04); }
.vs-row .b b { color: var(--c-primary); display: block; margin-bottom: 4px; }
.vs-head { background: var(--c-dark-2); color: #fff; }
.vs-head > div { font-size: 13.5px; font-weight: 700; letter-spacing: .5px; background: transparent !important; color: #fff; }
.vs-head .b { color: var(--c-cyan) !important; background: rgba(53, 230, 245, .1) !important; }

/* ============ 商业模式 ============ */
.biz-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.biz-card { border-radius: var(--radius); padding: 34px 30px; border: 1px solid var(--c-line); background: #fff; transition: all .32s; }
.biz-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.biz-card .tagline { font-size: 12px; letter-spacing: 2px; color: var(--c-cyan-d); font-weight: 700; margin-bottom: 12px; }
.biz-card h3 { font-size: 19px; margin-bottom: 10px; }
.biz-card p { font-size: 14.5px; color: var(--c-ink-3); }
.biz-card ul { margin-top: 16px; }
.biz-card li { font-size: 13.5px; color: var(--c-ink-2); padding: 6px 0 6px 18px; position: relative; }
.biz-card li::before { content: ""; position: absolute; left: 0; top: 14px; width: 6px; height: 6px; border-radius: 2px; background: var(--grad); }

/* ============ CTA ============ */
.cta-band { position: relative; overflow: hidden; text-align: center; padding: 104px 0; background: var(--grad-dark); color: #fff; }
.cta-band::before {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(120, 170, 255, .06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120, 170, 255, .06) 1px, transparent 1px);
  background-size: 50px 50px;
  mask-image: radial-gradient(700px 360px at 50% 50%, #000, transparent 78%);
}
.cta-band .container { position: relative; z-index: 1; }
.cta-band h2 { font-size: 36px; letter-spacing: 1px; }
.cta-band p { color: #a7b6d6; margin: 18px auto 38px; max-width: 620px; }

/* ============ 标语条 ============ */
.motto { display: flex; justify-content: center; gap: 60px; flex-wrap: wrap; padding: 46px 0; background: var(--c-bg-soft); }
.motto div { text-align: center; }
.motto b { display: block; font-size: 40px; font-weight: 700; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; font-family: "STKaiti", "KaiTi", serif; line-height: 1.2; }
.motto span { font-size: 13.5px; color: var(--c-ink-3); letter-spacing: 1px; }

/* ============ 表格/信息卡 ============ */
.info-card {
  border-radius: 24px; padding: 44px 40px; color: #fff; background: var(--grad-dark);
  position: relative; overflow: hidden; box-shadow: 0 26px 70px rgba(11, 47, 138, .3);
}
.info-card::after {
  content: ""; position: absolute; width: 280px; height: 280px; border-radius: 50%;
  top: -90px; right: -90px; background: radial-gradient(circle, rgba(53, 230, 245, .2), transparent 65%);
}
.info-card > * { position: relative; z-index: 1; }
.info-card h3 { font-size: 24px; margin-bottom: 8px; }
.info-card > p { color: #a7b6d6; font-size: 14px; margin-bottom: 30px; }
.info-row { display: flex; gap: 16px; align-items: flex-start; padding: 15px 0; border-top: 1px solid rgba(255, 255, 255, .1); }
.info-row .ico { flex: 0 0 40px; height: 40px; border-radius: 11px; background: rgba(255, 255, 255, .08); border: 1px solid rgba(255, 255, 255, .15); display: grid; place-items: center; color: #7deeff; }
.info-row b { display: block; font-size: 12.5px; color: #8fa0c2; font-weight: 500; }
.info-row span { font-size: 15px; }

.form-card { background: #fff; border: 1px solid var(--c-line); border-radius: 24px; padding: 44px 40px; box-shadow: var(--shadow); }
.form-card h3 { font-size: 24px; margin-bottom: 6px; }
.form-card > p { color: var(--c-ink-3); font-size: 14px; margin-bottom: 28px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-item { display: flex; flex-direction: column; gap: 8px; }
.form-item.full { grid-column: 1 / -1; }
.form-item label { font-size: 13.5px; font-weight: 600; color: var(--c-ink-2); }
.form-item label i { color: #e2504c; font-style: normal; }
.form-item input, .form-item select, .form-item textarea {
  font: inherit; font-size: 14.5px; color: var(--c-ink); padding: 12px 16px;
  border: 1.5px solid var(--c-line); border-radius: 12px; background: var(--c-bg-soft); outline: none; transition: all .25s; width: 100%;
}
.form-item textarea { min-height: 118px; resize: vertical; }
.form-item input:focus, .form-item select:focus, .form-item textarea:focus { border-color: var(--c-primary); background: #fff; box-shadow: 0 0 0 4px rgba(29, 92, 255, .1); }
.form-note { font-size: 12.5px; color: var(--c-ink-3); margin-top: 14px; }
#form-ok { display: none; text-align: center; padding: 26px 10px 10px; }
#form-ok .ok-ico { width: 64px; height: 64px; margin: 0 auto 18px; border-radius: 50%; background: var(--grad); display: grid; place-items: center; color: #fff; box-shadow: 0 10px 30px rgba(29, 92, 255, .35); }
#form-ok h4 { font-size: 20px; margin-bottom: 6px; }
#form-ok p { font-size: 14px; color: var(--c-ink-3); }

/* ============ 页脚 ============ */
.footer { background: var(--c-dark); color: #aab4c6; padding: 72px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.1fr; gap: 40px; padding-bottom: 50px; }
.footer h4 { color: #fff; font-size: 15.5px; margin-bottom: 20px; }
.footer .brand-name { color: #fff; }
.footer .brand-name small { color: #6b7690; }
.footer li { margin-bottom: 10px; font-size: 14px; }
.footer li a { transition: color .2s; }
.footer li a:hover { color: var(--c-cyan); }
.footer .about-text { font-size: 13.5px; line-height: 1.95; margin-top: 18px; max-width: 340px; color: #7d879e; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, .08); padding: 22px 0; text-align: center; font-size: 12.5px; color: #5d6880; }

/* ============ 动效 ============ */
.reveal { opacity: 0; transform: translateY(28px); transition: all .75s cubic-bezier(.22, .8, .35, 1); }
.reveal.in { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: .08s; }
.reveal.d2 { transition-delay: .16s; }
.reveal.d3 { transition-delay: .24s; }

/* ============ 响应式 ============ */
@media (max-width: 1080px) {
  .num-list { grid-template-columns: repeat(3, 1fr); }
  .num-list-4 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .scene-wall { grid-auto-rows: 285px; gap: 16px; }
}
@media (max-width: 900px) {
  .nav-links {
    position: fixed; top: var(--nav-h); left: 0; right: 0; flex-direction: column; align-items: stretch;
    gap: 0; background: #fff; border-bottom: 1px solid var(--c-line);
    padding: 10px 20px 20px; display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 13px 12px; border-radius: 10px; }
  .nav-toggle { display: grid; place-items: center; width: 42px; height: 42px; border: none; background: none; cursor: pointer; }
  .nav-toggle svg { width: 24px; height: 24px; }
  .hero-grid { grid-template-columns: 1fr; gap: 30px; }
  .hero-title { font-size: 34px; }
  .hero-dark { padding-top: calc(var(--nav-h) + 50px); }
  .sense { height: 330px; transform: scale(.82); }
  .page-head h1 { font-size: 30px; }
  .sec-title { font-size: 25px; }
  .section { padding: 64px 0; }
  .grid-2, .grid-3, .grid-4, .duel, .modality-wrap, .prod-grid, .team-grid, .biz-grid { grid-template-columns: 1fr; }
  .scene-wall { grid-template-columns: repeat(2, 1fr); grid-auto-rows: 250px; }
  .scene-item, .scene-item.wide { grid-column: span 1; }
  .scene-item.wide { grid-column: span 2; }
  .scene-row { grid-template-columns: 1fr; grid-auto-rows: 300px; }
  .scene-item figcaption { padding: 20px 20px 18px; }
  .scene-item p { font-size: 13px; }
  .loop { grid-template-columns: 1fr 1fr; }
  .loop-step::after { display: none; }
  .num-list { grid-template-columns: 1fr 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
  .vs-row { grid-template-columns: 1fr; }
  .vs-row .k { background: var(--c-dark-2); color: #fff; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .motto { gap: 30px; }
  .stat .num { font-size: 30px; }
}

/* ============================================================
   芯小喵系列 · 产品展示
   ============================================================ */
.xm-shot {
  position: relative; border-radius: 24px; overflow: hidden; background: #eef1f8;
  box-shadow: 0 22px 60px rgba(12, 30, 80, .16); border: 1px solid rgba(12, 30, 80, .06);
}
.xm-shot img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; display: block; }
.xm-shot .float-badge {
  position: absolute; top: 18px; right: 18px; z-index: 2;
  font-size: 12px; font-weight: 700; letter-spacing: .5px; color: #fff;
  padding: 6px 14px; border-radius: 999px; background: var(--grad);
  box-shadow: 0 8px 22px rgba(29, 92, 255, .4);
}
.xm-thumbs { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-top: 14px; }
.xm-thumbs .t {
  border-radius: 14px; overflow: hidden; cursor: pointer; border: 2px solid transparent;
  transition: transform .3s, border-color .3s, box-shadow .3s; background: #fff;
}
.xm-thumbs .t img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; display: block; }
.xm-thumbs .t:hover { transform: translateY(-4px); box-shadow: 0 10px 24px rgba(12, 30, 80, .14); }
.xm-thumbs .t.on { border-color: var(--c-violet); box-shadow: 0 8px 22px rgba(108, 92, 231, .25); }

.series-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.series-card {
  position: relative; background: #fff; border: 1px solid var(--c-line); border-radius: 22px;
  overflow: hidden; cursor: pointer;
  transition: transform .38s cubic-bezier(.2, .7, .3, 1), box-shadow .38s, border-color .38s;
  box-shadow: 0 6px 20px rgba(12, 30, 80, .05);
}
.series-card:hover { transform: translateY(-9px); box-shadow: 0 26px 60px rgba(12, 30, 80, .16); border-color: rgba(108, 92, 231, .35); }
.series-media { position: relative; overflow: hidden; }
.series-media img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; display: block; transition: transform .7s cubic-bezier(.2, .7, .3, 1); }
.series-card:hover .series-media img { transform: scale(1.07); }
.series-media::after {
  content: ""; position: absolute; inset: 0; opacity: 0; transition: opacity .35s; pointer-events: none;
  background: linear-gradient(180deg, rgba(10, 20, 44, .26), rgba(10, 20, 44, .03) 45%, transparent);
}
.series-card:hover .series-media::after { opacity: 1; }
.series-gender {
  position: absolute; top: 12px; left: 12px; z-index: 2; font-size: 11.5px; font-weight: 700;
  padding: 4px 11px; border-radius: 999px; background: rgba(255, 255, 255, .92); backdrop-filter: blur(6px);
}
.series-gender.m { color: #2f6bd8; }
.series-gender.f { color: #d8447f; }
.series-zoom {
  position: absolute; bottom: 12px; right: 12px; z-index: 2; width: 34px; height: 34px; border-radius: 50%;
  display: grid; place-items: center; color: #fff; background: rgba(18, 26, 48, .5);
  backdrop-filter: blur(6px); opacity: 0; transform: translateY(6px); transition: all .35s;
}
.series-card:hover .series-zoom { opacity: 1; transform: none; }
.series-body { padding: 18px 20px 20px; }
.series-name { display: flex; align-items: center; gap: 9px; }
.series-name b { font-size: 19px; letter-spacing: .5px; }
.series-alias { font-size: 11.5px; font-weight: 600; padding: 3px 9px; border-radius: 999px; background: rgba(108, 92, 231, .09); color: #6c5ce7; }
.series-meta { margin-top: 13px; font-size: 13px; color: var(--c-ink-2); }
.series-meta div { display: flex; gap: 9px; padding: 5.5px 0; line-height: 1.65; }
.series-meta .k { flex: 0 0 32px; color: var(--c-ink-3); }
.series-hint {
  margin-top: 16px; padding-top: 13px; border-top: 1px dashed var(--c-line);
  font-size: 12px; color: var(--c-primary); display: flex; align-items: center; gap: 6px;
}

/* ============ 图片灯箱 ============ */
.lightbox {
  position: fixed; inset: 0; z-index: 500; display: none; align-items: center; justify-content: center;
  padding: 60px 24px; background: rgba(6, 11, 24, .9); backdrop-filter: blur(8px);
}
.lightbox.open { display: flex; animation: lbIn .28s ease; }
@keyframes lbIn { from { opacity: 0 } to { opacity: 1 } }
.lightbox img {
  max-width: min(520px, 90vw); max-height: 82vh; border-radius: 18px;
  box-shadow: 0 40px 100px rgba(0, 0, 0, .6);
}
.lightbox-close {
  position: absolute; top: 22px; right: 26px; width: 46px; height: 46px; border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, .22); background: rgba(255, 255, 255, .1);
  color: #fff; font-size: 22px; line-height: 1; cursor: pointer; transition: all .25s;
}
.lightbox-close:hover { background: rgba(255, 255, 255, .22); transform: rotate(90deg); }
.lightbox-cap {
  position: absolute; bottom: 24px; left: 0; right: 0; text-align: center;
  color: rgba(255, 255, 255, .82); font-size: 13.5px; letter-spacing: .5px; padding: 0 24px;
}

@media (max-width: 1080px) {
  .series-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  .series-grid { grid-template-columns: 1fr; }
  .num-list, .num-list-4 { grid-template-columns: 1fr; }
  .xm-thumbs { grid-template-columns: repeat(2, 1fr); }
  .lightbox img { max-width: 94vw; }
  .scene-wall { grid-template-columns: 1fr; grid-auto-rows: 245px; }
  .scene-item, .scene-item.wide { grid-column: span 1; }
  .scene-item p { font-size: 12.5px; }
}

/* ============================================================
   智能制造基地 · 产线实拍
   ============================================================ */
.fx-wall { display: grid; grid-template-columns: repeat(4, 1fr); grid-auto-rows: 404px; gap: 20px; }
/* .scene-item 默认 span 2（服务于六列场景墙），此处重置为单列 */
.fx-wall .scene-item, .fx-wall .scene-item.wide,
.fx-mosaic .scene-item, .fx-mosaic .scene-item.wide { grid-column: span 1; }
.fx-item figcaption { padding: 22px 20px 20px; }
.fx-item .si-no { font-size: 11px; letter-spacing: 1.6px; margin-bottom: 8px; }
.fx-item h3 { font-size: 17px; margin-bottom: 7px; }
.fx-item p { font-size: 12.8px; line-height: 1.66; }

.fx-split { display: grid; grid-template-columns: 320px 1fr; gap: 54px; align-items: center; margin-top: 66px; }

.fx-video {
  position: relative; border-radius: 22px; overflow: hidden; background: #0b1224;
  box-shadow: 0 26px 62px rgba(12, 30, 80, .24);
}
.fx-video video { width: 100%; aspect-ratio: 9 / 16; object-fit: cover; display: block; }
.fx-video-tag {
  position: absolute; top: 14px; left: 14px; z-index: 3; font-size: 11.5px; font-weight: 700;
  letter-spacing: .6px; color: #fff; padding: 5px 12px; border-radius: 999px;
  background: rgba(6, 11, 24, .52); border: 1px solid rgba(255, 255, 255, .22);
  backdrop-filter: blur(6px); transition: opacity .3s;
}
.fx-play {
  position: absolute; inset: 0; z-index: 2; width: 100%; height: 100%; padding: 0;
  border: none; cursor: pointer; display: grid; place-items: center;
  background: linear-gradient(180deg, rgba(6, 11, 24, .12), rgba(6, 11, 24, .46));
  transition: opacity .35s;
}
.fx-play i {
  width: 76px; height: 76px; border-radius: 50%; background: #fff; color: var(--c-primary);
  display: grid; place-items: center; font-style: normal;
  box-shadow: 0 16px 38px rgba(6, 11, 24, .42); transition: transform .3s;
}
.fx-play:hover i { transform: scale(1.09); }
.fx-video.playing .fx-play, .fx-video.playing .fx-video-tag { opacity: 0; pointer-events: none; }

.fx-h { font-size: 28px; font-weight: 700; letter-spacing: .5px; line-height: 1.42; margin: 12px 0 14px; }
.fx-lead { color: var(--c-ink-2); font-size: 15.5px; }
.fx-stages { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 30px; }
.fx-stage { background: #fff; border: 1px solid var(--c-line); border-radius: 16px; padding: 20px; transition: all .3s; }
.fx-stage:hover { transform: translateY(-4px); border-color: rgba(29, 92, 255, .3); box-shadow: 0 14px 34px rgba(12, 30, 80, .1); }
.fx-stage .no { font-family: Georgia, serif; font-size: 12.5px; font-weight: 700; letter-spacing: 1.2px; color: var(--c-primary); }
.fx-stage b { display: block; font-size: 15.5px; margin: 7px 0 5px; }
.fx-stage span { font-size: 12.8px; color: var(--c-ink-3); line-height: 1.62; }

/* ---- 首页：产线带（深色） ---- */
.fx-band { display: grid; grid-template-columns: 1fr 1.04fr; gap: 58px; align-items: center; }
.fx-band .fx-h { color: #fff; font-size: 34px; }
.fx-band .fx-lead { color: #93a2c2; }
.fx-pills { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.fx-pills span {
  font-size: 13.5px; color: #d6e5ff; padding: 10px 18px; border-radius: 999px;
  background: rgba(255, 255, 255, .06); border: 1px solid rgba(140, 190, 255, .2);
  transition: all .3s;
}
.fx-pills span:hover { border-color: rgba(53, 230, 245, .5); color: #7deeff; transform: translateY(-3px); }
.fx-mosaic { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.fx-mosaic .scene-item { aspect-ratio: 3 / 4; }
.fx-mosaic .scene-item:nth-child(2), .fx-mosaic .scene-item:nth-child(4) { margin-top: 26px; }
.fx-mosaic .scene-item figcaption { padding: 18px 16px 16px; }
.fx-mosaic .scene-item h3 { font-size: 15px; margin-bottom: 0; }
.fx-mosaic .scene-item .si-no { font-size: 10.5px; letter-spacing: 1.4px; margin-bottom: 6px; }

@media (max-width: 1080px) {
  .fx-wall { grid-template-columns: repeat(2, 1fr); grid-auto-rows: 372px; }
  .fx-split { grid-template-columns: 280px 1fr; gap: 36px; }
  .fx-band { grid-template-columns: 1fr; gap: 44px; }
  .fx-mosaic .scene-item { aspect-ratio: 4 / 3; }
  .fx-mosaic .scene-item:nth-child(2), .fx-mosaic .scene-item:nth-child(4) { margin-top: 0; }
}
@media (max-width: 900px) {
  .fx-split { grid-template-columns: 1fr; gap: 34px; }
  .fx-video { max-width: 300px; margin: 0 auto; }
}
@media (max-width: 560px) {
  .fx-wall { grid-template-columns: 1fr; grid-auto-rows: 386px; }
  .fx-stages { grid-template-columns: 1fr; }
  .fx-h { font-size: 23px; }
  .fx-band .fx-h { font-size: 25px; }
}


/* ============================================================
   公司 Logo（导航 / 页脚）
   横版锁定组合为 480x85（含副标行），按高度缩放
   ============================================================ */
.brand-logo { display: block; height: 31px; width: auto; }
.footer .brand-logo { height: 28px; }

/* Logo 的其他形态：椭圆印章（关于我们）/ 方形徽标（产品服务） */
.brand-seal { display: block; height: 88px; width: auto; margin-bottom: 22px; }
.brand-badge { display: block; width: 106px; height: auto; margin-bottom: 20px; }

/* ============================================================
   语言切换（中 / EN）
   ============================================================ */
.nav-right { display: flex; align-items: center; gap: 10px; margin-left: 6px; }
.lang-switch {
  display: flex; align-items: center; gap: 2px; padding: 3px;
  border-radius: 999px; background: rgba(29, 92, 255, .07);
  border: 1px solid rgba(29, 92, 255, .14);
}
.lang-switch a {
  display: block; padding: 4px 11px; border-radius: 999px;
  font-size: 12.5px; font-weight: 700; letter-spacing: .03em;
  line-height: 1.35; color: var(--c-ink-3); text-decoration: none;
  transition: all .22s;
}
.lang-switch a:hover { color: var(--c-primary); }
.lang-switch a.on {
  background: var(--grad); color: #fff;
  box-shadow: 0 4px 12px rgba(29, 92, 255, .28);
}

@media (max-width: 900px) {
  .nav-right { gap: 6px; margin-left: 0; }
  .lang-switch { padding: 2px; }
  .lang-switch a { padding: 4px 9px; font-size: 12px; }
}
@media (max-width: 560px) {
  .brand-logo { height: 25px; }
  .footer .brand-logo { height: 24px; }
  .brand-seal { height: 68px; margin-bottom: 18px; }
  .brand-badge { width: 84px; margin-bottom: 16px; }
  .lang-switch a { padding: 3px 8px; font-size: 11.5px; }
}