/* ============================================================
   爱乐信息官网 · 极光浅色 AI 设计系统
   深圳市爱乐信息服务有限公司
   ============================================================ */

:root {
  /* 色彩系统 */
  --bg: #f4f7fb;
  --bg-raise: #fbfcfe;
  --surface: #ffffff;
  --surface-hover: #f6f9fd;
  --hairline: rgba(16, 24, 40, 0.10);
  --hairline-strong: rgba(16, 24, 40, 0.18);
  --text: #10182b;
  --text-dim: #5a6479;
  --text-faint: #98a1b3;
  --accent: #3b82f6;
  --accent-deep: #2563eb;
  --mint: #35d0a5;
  --violet: #8b7cf6;
  --ink: #10182b;
  --accent-glow: rgba(59, 130, 246, 0.16);
  --shadow-sm: 0 1px 2px rgba(16, 24, 40, 0.05), 0 4px 12px rgba(16, 24, 40, 0.05);
  --shadow-md: 0 12px 32px rgba(16, 24, 40, 0.10);
  --shadow-lg: 0 24px 64px rgba(16, 24, 40, 0.14);

  /* 字体 */
  --font-body: "HarmonyOS Sans SC", "PingFang SC", "Source Han Sans SC",
    "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-num: "Bai Jamjuree", "Rajdhani", var(--font-body);

  /* 布局 · 分区差异化间距 */
  --page-max: 1200px;
  --pad-x: clamp(20px, 5vw, 64px);
  --section-gap: clamp(72px, 9vw, 120px);       /* 默认 */
  --section-gap-dense: clamp(52px, 6.5vw, 84px); /* 内容密集区 */
  --section-gap-air: clamp(80px, 10vw, 136px);   /* 宣言 / 收尾区 */
  --radius: 14px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

::selection { background: var(--accent); color: #fff; }

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

.wrap {
  max-width: var(--page-max);
  margin: 0 auto;
  padding-left: var(--pad-x);
  padding-right: var(--pad-x);
}

/* 渐变强调文字（带流光动效） */
.grad-text, .hero h1 em, .vision blockquote em, .sub-hero h1 em {
  font-style: normal;
  background: linear-gradient(115deg, var(--accent-deep), var(--violet), var(--mint), var(--accent-deep));
  background-size: 300% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  animation: gradFlow 7s ease-in-out infinite;
}
@keyframes gradFlow {
  0%, 100% { background-position: 0% 0; }
  50% { background-position: 100% 0; }
}

/* ------------------------------------------------------------
   导航
   ------------------------------------------------------------ */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  transition: background 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(14px);
  border-bottom-color: var(--hairline);
  box-shadow: 0 1px 12px rgba(16, 24, 40, 0.05);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.logo {
  display: flex;
  align-items: baseline;
  gap: 11px;
  font-size: 24px;
  font-weight: 700;
  letter-spacing: 0.06em;
}
.logo .logo-img {
  /* 覆盖全局 img{max-width:100%}，避免宽字标被压扁；高度对齐中文品牌名 */
  height: 30px;
  width: auto !important;
  max-width: none !important;
  object-fit: contain;
  object-position: left center;
  flex-shrink: 0;
  align-self: center;
  image-rendering: -webkit-optimize-contrast;
}
.logo .logo-sub {
  font-size: 12px;
  font-weight: 400;
  color: var(--text-faint);
  letter-spacing: 0.18em;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
  font-size: 14.5px;
  color: var(--text-dim);
}
.nav-links > a,
.nav-links .nav-parent {
  position: relative;
  padding: 6px 0;
  transition: color 0.25s;
}
.nav-links > a:hover,
.nav-links > a.active,
.nav-links .nav-parent:hover,
.nav-links .nav-parent.active,
.nav-item.has-sub:hover .nav-parent {
  color: var(--text);
}
.nav-links > a::after,
.nav-links .nav-parent::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s cubic-bezier(0.2, 0.65, 0.3, 1);
}
.nav-links > a:hover::after,
.nav-links > a.active::after,
.nav-links .nav-parent:hover::after,
.nav-links .nav-parent.active::after,
.nav-item.has-sub:hover .nav-parent::after {
  transform: scaleX(1);
}

/* 旗下品牌二级菜单 */
.nav-item.has-sub {
  position: relative;
}
.nav-parent {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}
.nav-caret {
  display: inline-block;
  width: 0; height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 5px solid currentColor;
  opacity: 0.55;
  transition: transform 0.25s, opacity 0.25s;
}
.nav-item.has-sub:hover .nav-caret,
.nav-item.has-sub.open .nav-caret {
  transform: rotate(180deg);
  opacity: 0.9;
}
.nav-sub {
  position: absolute;
  top: calc(100% + 14px);
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  width: 320px;
  padding: 10px;
  border: 1px solid var(--hairline);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 0 16px 40px rgba(16, 24, 40, 0.12);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.22s ease, transform 0.22s ease, visibility 0.22s;
  z-index: 80;
}
/* 悬停桥接区，避免移入下拉时闪断 */
.nav-sub::before {
  content: "";
  position: absolute;
  left: 0; right: 0;
  top: -18px;
  height: 18px;
}
.nav-item.has-sub:hover .nav-sub,
.nav-item.has-sub:focus-within .nav-sub,
.nav-item.has-sub.open .nav-sub {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}
.nav-sub-link {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 12px 14px;
  border-radius: 10px;
  color: var(--text);
  transition: background 0.2s, color 0.2s;
}
.nav-sub-link b {
  font-size: 14.5px;
  font-weight: 600;
  color: var(--text);
}
.nav-sub-link span {
  font-size: 12.5px;
  line-height: 1.45;
  color: var(--text-faint);
}
.nav-sub-link:hover,
.nav-sub-link.active {
  background: rgba(59, 130, 246, 0.08);
}
.nav-sub-link:hover b,
.nav-sub-link.active b {
  color: var(--accent-deep);
}
.nav-sub-link + .nav-sub-link {
  margin-top: 2px;
}
.nav-cta {
  background: var(--ink);
  border: 1px solid var(--ink);
  border-radius: 999px;
  padding: 8px 22px;
  font-size: 14px;
  color: #fff;
  transition: background 0.25s, border-color 0.25s, box-shadow 0.25s, transform 0.25s;
}
.nav-cta:hover {
  background: var(--accent-deep);
  border-color: var(--accent-deep);
  box-shadow: 0 6px 20px var(--accent-glow);
  transform: translateY(-1px);
}
.nav-burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: 0;
  cursor: pointer;
  padding: 8px;
}
.nav-burger span {
  width: 22px; height: 2px;
  background: var(--text);
  transition: transform 0.3s, opacity 0.3s;
}

/* ------------------------------------------------------------
   首屏整体（Hero + 品牌条，固定靠上，避免高屏居中撑出大空白）
   ------------------------------------------------------------ */
.first-fold {
  display: flex;
  flex-direction: column;
  padding-top: 72px; /* 导航高度 */
  box-sizing: border-box;
}

/* ------------------------------------------------------------
   Hero
   ------------------------------------------------------------ */
.hero {
  position: relative;
  display: flex;
  align-items: center;
  padding-top: clamp(28px, 4vh, 48px);
  padding-bottom: clamp(20px, 3vh, 36px);
  overflow: hidden;
}
/* 极光渐变底色（缓慢漂移动效） */
.hero::before {
  content: "";
  position: absolute;
  inset: -25% -15%;
  z-index: 0;
  background:
    radial-gradient(ellipse 42% 46% at 78% 18%, rgba(124, 184, 255, 0.42), transparent 70%),
    radial-gradient(ellipse 36% 42% at 92% 52%, rgba(159, 232, 208, 0.38), transparent 70%),
    radial-gradient(ellipse 38% 44% at 62% 8%, rgba(201, 194, 245, 0.34), transparent 70%);
  animation: auroraDrift 16s ease-in-out infinite alternate;
  pointer-events: none;
}
@keyframes auroraDrift {
  from { transform: translate3d(0, 0, 0) scale(1); }
  to { transform: translate3d(-3%, 4%, 0) scale(1.06); }
}
.hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  z-index: 1;
}
.hero-inner {
  position: relative;
  z-index: 2;
  width: 100%;
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.9fr);
  gap: clamp(32px, 6vw, 80px);
  align-items: center;
}
.hero-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13.5px;
  letter-spacing: 0.22em;
  color: var(--accent-deep);
  margin-bottom: 16px;
}
.hero-label::before {
  content: "";
  width: 26px; height: 1px;
  background: var(--accent-deep);
}
.hero h1 {
  font-size: clamp(34px, 4.8vw, 58px);
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: 0.015em;
}
.hero-sub {
  margin-top: 14px;
  max-width: 480px;
  color: var(--text-dim);
  font-size: clamp(15px, 1.4vw, 17px);
}
.hero-actions {
  margin-top: 28px;
  display: flex;
  align-items: center;
  gap: 18px;
}

/* Hero 右侧 AI Builders 品牌图（磨砂玻璃卡片） */
.builders-card {
  border: 1px solid rgba(255, 255, 255, 0.9);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.66);
  backdrop-filter: blur(14px);
  padding: 18px 22px 16px;
  box-shadow: var(--shadow-lg);
  width: min(400px, 100%);
  justify-self: end;
}
.bc-head {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding-bottom: 14px;
  border-bottom: 1px dashed var(--hairline);
}
.bc-head b {
  font-family: var(--font-num);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0.02em;
}
.bc-head span { font-size: 12.5px; color: var(--text-faint); }
.bc-orbit {
  position: relative;
  height: 228px;
  margin: 6px 0;
}
/* 外层反向旋转轨道 */
.bc-orbit::before {
  content: "";
  position: absolute;
  top: 42%; left: 50%;
  width: 200px; height: 200px;
  margin: -100px 0 0 -100px;
  border: 1px dashed rgba(139, 124, 246, 0.28);
  border-radius: 50%;
  animation: ringSpinR 44s linear infinite;
}
@keyframes ringSpinR { to { transform: rotate(-360deg); } }
.bc-ring {
  position: absolute;
  top: 42%; left: 50%;
  width: 148px; height: 148px;
  margin: -74px 0 0 -74px;
  border: 1px dashed rgba(59, 130, 246, 0.45);
  border-radius: 50%;
  animation: ringSpin 26s linear infinite;
}
.bc-ring::before, .bc-ring::after {
  content: "";
  position: absolute;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px var(--accent-glow);
}
.bc-ring::before { top: -4px; left: 50%; }
.bc-ring::after { bottom: -4px; left: 20%; }
@keyframes ringSpin { to { transform: rotate(360deg); } }
.bc-center {
  position: absolute;
  top: 42%; left: 50%;
  width: 80px; height: 80px;
  margin: -40px 0 0 -40px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-family: var(--font-num);
  font-size: 30px;
  font-weight: 700;
  color: #fff;
  background: linear-gradient(135deg, #4a9ef0, var(--mint));
  box-shadow: 0 12px 36px rgba(74, 158, 240, 0.38);
  animation: aiBreath 4.5s ease-in-out infinite;
}
@keyframes aiBreath {
  0%, 100% { transform: scale(1); box-shadow: 0 12px 36px rgba(74, 158, 240, 0.38); }
  50% { transform: scale(1.06); box-shadow: 0 16px 52px rgba(53, 208, 165, 0.52); }
}
.bc-node {
  position: absolute;
  width: 74px; height: 74px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.9);
  background: rgba(255, 255, 255, 0.85);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  animation: nodeFloat 5s ease-in-out infinite;
}
.bc-node b { font-size: 14.5px; font-weight: 600; }
.bc-node span { font-size: 11px; color: var(--accent-deep); }
/* 三节点均匀贴在轨道环上（与环心距离一致） */
.bc-node.n1 { top: 4px; left: 50%; margin-left: -124px; }
.bc-node.n2 { top: 4px; left: 50%; margin-left: 50px; animation-delay: 1.2s; }
.bc-node.n3 { bottom: 0; left: 50%; margin-left: -37px; animation-delay: 2.4s; }
@keyframes nodeFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}
.bc-foot {
  padding-top: 12px;
  border-top: 1px dashed var(--hairline);
  font-size: 12.5px;
  color: var(--text-faint);
  text-align: center;
}

/* ------------------------------------------------------------
   按钮
   ------------------------------------------------------------ */
.btn-line {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--accent-deep);
  font-size: 16px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--accent-deep);
  transition: gap 0.25s ease, opacity 0.25s;
}
.btn-line:hover { gap: 16px; opacity: 0.8; }
.btn-primary {
  position: relative;
  overflow: hidden;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-deep);
  color: #fff;
  font-weight: 500;
  font-size: 15.5px;
  padding: 12px 36px;
  border-radius: 999px;
  transition: background 0.25s, transform 0.25s, box-shadow 0.25s;
}
.btn-primary:hover {
  background: #1d4ed8;
  transform: translateY(-2px);
  box-shadow: 0 12px 28px var(--accent-glow);
}
/* 扫光效果 */
.btn-primary::after, .btn-solid::after, .nav-cta::after {
  content: "";
  position: absolute;
  top: 0; left: -80%;
  width: 55%; height: 100%;
  background: linear-gradient(100deg, transparent, rgba(255, 255, 255, 0.4), transparent);
  transform: skewX(-20deg);
  transition: left 0.55s ease;
  pointer-events: none;
}
.btn-primary:hover::after, .btn-solid:hover::after, .nav-cta:hover::after { left: 125%; }
.btn-solid, .nav-cta { position: relative; overflow: hidden; }
.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--surface);
  color: var(--text);
  font-weight: 500;
  font-size: 15.5px;
  padding: 12px 36px;
  border: 1px solid var(--hairline-strong);
  border-radius: 999px;
  transition: border-color 0.25s, color 0.25s, transform 0.25s, box-shadow 0.25s;
}
.btn-outline:hover {
  border-color: var(--accent-deep);
  color: var(--accent-deep);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}
.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text-dim);
  font-size: 15px;
  transition: color 0.25s;
}
.btn-ghost:hover { color: var(--text); }
.btn-solid {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--ink);
  color: #fff;
  font-weight: 600;
  font-size: 15.5px;
  padding: 13px 34px;
  border-radius: 999px;
  transition: transform 0.25s, box-shadow 0.25s, background 0.25s;
}
.btn-solid:hover {
  transform: translateY(-2px);
  background: var(--accent-deep);
  box-shadow: 0 12px 32px var(--accent-glow);
}

/* ------------------------------------------------------------
   通用 Section（方案 2：密集区紧、宣言区松）
   ------------------------------------------------------------ */
.section { padding-top: var(--section-gap); }
.section:last-of-type { padding-bottom: var(--section-gap); }
.section.sec-dense { padding-top: var(--section-gap-dense); }
.section.sec-dense:last-of-type { padding-bottom: var(--section-gap-dense); }
.section.sec-air { padding-top: var(--section-gap-air); }
.section.sec-air:last-of-type { padding-bottom: var(--section-gap-air); }

.sec-head { margin-bottom: clamp(32px, 4.5vw, 56px); }
.sec-dense .sec-head { margin-bottom: clamp(24px, 3.5vw, 40px); }
.sec-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  letter-spacing: 0.24em;
  color: var(--accent-deep);
  margin-bottom: 18px;
}
.sec-label::before {
  content: "";
  width: 22px; height: 1px;
  background: var(--accent-deep);
}
/* 区块标题横线随滚动展开 */
.reveal .sec-label::before { width: 0; transition: width 0.7s cubic-bezier(0.2, 0.65, 0.3, 1) 0.35s; }
.reveal.in .sec-label::before { width: 22px; }
.sec-head h2 {
  font-size: clamp(28px, 3.6vw, 44px);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: 0.01em;
}
.sec-head p {
  margin-top: 16px;
  color: var(--text-dim);
  max-width: 560px;
  font-size: 15.5px;
}
.sec-head.center { text-align: center; }
.sec-head.center .sec-label { justify-content: center; }
.sec-head.center .sec-label::before { display: none; }
.sec-head.center p { margin-left: auto; margin-right: auto; }

/* ------------------------------------------------------------
   品牌条（方案一效果图 1:1）
   ------------------------------------------------------------ */
.industry-strip {
  position: relative;
  border: 0;
  overflow: hidden;
  background: transparent;
}
.industry-strip-bg {
  position: absolute;
  inset: -8% 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse 90% 70% at 50% -10%, rgba(200, 228, 255, 0.7), transparent 60%),
    radial-gradient(ellipse 50% 60% at 0% 80%, rgba(170, 230, 220, 0.28), transparent 60%),
    radial-gradient(ellipse 50% 60% at 100% 80%, rgba(150, 200, 255, 0.32), transparent 60%),
    radial-gradient(circle 180px at 20% 30%, rgba(255, 255, 255, 0.7), transparent 70%),
    radial-gradient(circle 160px at 80% 25%, rgba(255, 255, 255, 0.55), transparent 70%),
    linear-gradient(180deg, #eef6ff 0%, #f7fbff 42%, #eaf4ff 100%);
}
/* 底部点阵波纹 */
.industry-strip-bg::before,
.industry-strip-bg::after {
  content: "";
  position: absolute;
  left: -5%; right: -5%;
  pointer-events: none;
}
.industry-strip-bg::before {
  bottom: 2%;
  height: 48%;
  opacity: 0.55;
  background-image: radial-gradient(circle, rgba(110, 175, 245, 0.7) 1.1px, transparent 1.3px);
  background-size: 16px 12px;
  transform: perspective(240px) rotateX(48deg) scale(1.15);
  transform-origin: center bottom;
  mask-image: linear-gradient(180deg, transparent 0%, #000 35%, #000 75%, transparent 100%);
  -webkit-mask-image: linear-gradient(180deg, transparent 0%, #000 35%, #000 75%, transparent 100%);
}
.industry-strip-bg::after {
  inset: 0;
  opacity: 0.35;
  background-image: radial-gradient(circle, rgba(140, 190, 245, 0.35) 0.8px, transparent 1px);
  background-size: 28px 28px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, #000 0%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, #000 0%, transparent 75%);
}
.industry-strip-inner {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: stretch;
  justify-content: space-between;
  gap: 0;
  padding-top: clamp(40px, 5.5vw, 64px);
  padding-bottom: clamp(32px, 4.5vw, 52px);
}
.industry-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 0;
  padding: 8px 24px;
  transition: transform 0.25s;
}
.industry-item:hover { transform: translateY(-3px); }
.industry-item .i-brand {
  font-size: clamp(36px, 4.6vw, 56px);
  font-weight: 800;
  letter-spacing: 0.14em;
  line-height: 1.08;
  background: linear-gradient(120deg, #1d6ef5 0%, #3bb4ff 48%, #2ec8c0 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.industry-item:nth-child(3) .i-brand {
  background: linear-gradient(120deg, #0f9ea8 0%, #2ec8c0 40%, #5ad6ff 100%);
  -webkit-background-clip: text;
  background-clip: text;
}
.industry-item:nth-child(5) .i-brand {
  background: linear-gradient(120deg, #1a5fe0 0%, #3a8dff 50%, #6ec8ff 100%);
  -webkit-background-clip: text;
  background-clip: text;
}
.industry-item .i-en {
  margin-top: 12px;
  font-family: var(--font-num);
  font-size: 12.5px;
  font-weight: 500;
  letter-spacing: 0.4em;
  color: #6aaeef;
}
.industry-item:nth-child(3) .i-en { color: #4db8b8; }
.industry-item:nth-child(5) .i-en { color: #5a9eef; }
.industry-item .i-tag {
  margin-top: 16px;
  font-size: 13px;
  letter-spacing: 0.24em;
  color: #4a90e2;
  background: none;
  padding: 0;
  border-radius: 0;
}
.industry-item:nth-child(3) .i-tag { color: #3aa8a8; }
.industry-item .i-desc {
  margin-top: 16px;
  max-width: 260px;
  font-size: 14px;
  line-height: 1.65;
  color: #667085;
}
/* 竖向虚线 + 中心空心圆 */
.industry-divider {
  position: relative;
  flex: 0 0 1px;
  align-self: stretch;
  margin: 18px 0;
  background: repeating-linear-gradient(
    180deg,
    rgba(130, 185, 235, 0.65) 0 2.5px,
    transparent 2.5px 7px
  );
}
.industry-divider span {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 10px;
  height: 10px;
  border: 1.5px solid rgba(100, 170, 240, 0.75);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.95);
  transform: translate(-50%, -50%);
  box-shadow: 0 0 0 4px rgba(238, 246, 255, 0.95);
}

/* ------------------------------------------------------------
   品牌矩阵（横向面板）
   ------------------------------------------------------------ */
.brand-panels { display: grid; gap: 18px; }
.brand-panel {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
  gap: clamp(20px, 4vw, 56px);
  align-items: center;
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
  padding: clamp(28px, 4vw, 48px);
  overflow: hidden;
  transition: border-color 0.35s, box-shadow 0.35s, transform 0.35s;
}
.brand-panel:hover {
  border-color: rgba(59, 130, 246, 0.45);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}
.brand-panel::before {
  content: attr(data-index);
  position: absolute;
  top: 22px; right: 28px;
  font-family: var(--font-num);
  font-size: 13px;
  letter-spacing: 0.2em;
  color: var(--text-faint);
}
.brand-panel .b-tag {
  display: inline-block;
  font-size: 12.5px;
  letter-spacing: 0.14em;
  color: var(--accent-deep);
  background: var(--accent-glow);
  border: 1px solid rgba(59, 130, 246, 0.25);
  border-radius: 999px;
  padding: 3px 12px;
  margin-bottom: 18px;
}
.brand-panel h3 {
  font-size: clamp(26px, 3vw, 36px);
  font-weight: 700;
  letter-spacing: 0.03em;
}
.brand-panel .b-pos {
  margin-top: 8px;
  color: var(--text-dim);
  font-size: 15.5px;
}
.brand-panel .b-feats {
  margin-top: 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.brand-panel .b-feats li {
  font-size: 12.5px;
  color: var(--text-dim);
  border: 1px solid var(--hairline);
  background: var(--bg);
  border-radius: 6px;
  padding: 4px 10px;
}
.brand-panel .b-link {
  margin-top: 26px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14.5px;
  color: var(--accent-deep);
  transition: gap 0.25s;
}
.brand-panel:hover .b-link { gap: 14px; }

/* 品牌面板右侧模拟 UI */
.b-visual {
  border: 1px solid var(--hairline);
  border-radius: 10px;
  background: var(--bg-raise);
  padding: 18px;
  font-size: 12px;
  color: var(--text-faint);
  min-height: 190px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.b-visual .v-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--hairline);
}
.b-visual .v-top b { color: var(--text-dim); font-weight: 600; }
.b-visual .v-kpis { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.b-visual .v-kpi {
  border: 1px solid var(--hairline);
  border-radius: 8px;
  background: var(--surface);
  padding: 10px 12px;
}
.b-visual .v-kpi b {
  display: block;
  font-family: var(--font-num);
  font-size: 17px;
  color: var(--text);
  font-weight: 600;
}
.b-visual .v-kpi i { font-style: normal; color: var(--mint); font-size: 11px; }
.b-visual .v-rows { display: flex; flex-direction: column; gap: 8px; }
.b-visual .v-row {
  display: flex;
  justify-content: space-between;
  border-bottom: 1px dashed var(--hairline);
  padding-bottom: 6px;
}
.b-visual .v-row em { font-style: normal; color: var(--accent-deep); }

/* ------------------------------------------------------------
   AI 能力底座
   ------------------------------------------------------------ */
.maas-note {
  border-left: 2px solid var(--accent);
  padding: 6px 0 6px 22px;
  color: var(--text-dim);
  font-size: 15.5px;
  max-width: 720px;
  margin-bottom: clamp(28px, 3.5vw, 44px);
}
.maas-note strong { color: var(--text); }
.ai-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  /* 六卡片下方过渡留白（此前收紧间距时误去掉，现恢复） */
  margin-bottom: clamp(56px, 8vw, 104px);
}
.ai-cell {
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  padding: 30px 28px;
  background: var(--surface);
  box-shadow: var(--shadow-sm);
  transition: border-color 0.3s, transform 0.3s, box-shadow 0.3s;
}
.ai-cell:hover {
  border-color: rgba(59, 130, 246, 0.4);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}
.ai-cell .num {
  font-family: var(--font-num);
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--accent-deep);
}
.ai-cell h4 { margin-top: 14px; font-size: 18.5px; font-weight: 600; }
.ai-cell p { margin-top: 10px; font-size: 14px; color: var(--text-dim); }

/* ------------------------------------------------------------
   愿景（大字宣言）
   ------------------------------------------------------------ */
.vision {
  position: relative;
  overflow: hidden;
  border-top: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
  background: var(--surface);
}
/* 漂移极光 */
.vision::before {
  content: "";
  position: absolute;
  inset: -30% -20%;
  background:
    radial-gradient(ellipse 40% 55% at 85% 15%, rgba(124, 184, 255, 0.26), transparent 70%),
    radial-gradient(ellipse 35% 50% at 10% 85%, rgba(159, 232, 208, 0.22), transparent 70%),
    radial-gradient(ellipse 30% 45% at 55% 50%, rgba(201, 194, 245, 0.16), transparent 70%);
  animation: auroraDrift 20s ease-in-out infinite alternate;
  pointer-events: none;
}
.vision .wrap {
  position: relative;
  padding-top: clamp(64px, 8vw, 104px);
  padding-bottom: clamp(64px, 8vw, 104px);
}
.vision blockquote {
  font-size: clamp(26px, 3.8vw, 46px);
  font-weight: 700;
  line-height: 1.5;
  max-width: 900px;
}
.vision .from {
  margin-top: 32px;
  color: var(--text-faint);
  font-size: 14px;
  letter-spacing: 0.1em;
}

/* 关于我们两栏 */
.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(32px, 6vw, 80px);
  align-items: start;
}
.about-grid .lead {
  font-size: clamp(19px, 2vw, 24px);
  line-height: 1.7;
  font-weight: 500;
}
.about-grid .body { color: var(--text-dim); font-size: 15.5px; }
.about-grid .body p + p { margin-top: 16px; }

/* ------------------------------------------------------------
   联系 CTA
   ------------------------------------------------------------ */
.contact-cta {
  position: relative;
  overflow: hidden;
  text-align: center;
  border: 1px solid var(--hairline);
  border-radius: 20px;
  background: var(--surface);
  box-shadow: var(--shadow-md);
  padding: clamp(56px, 8vw, 96px) var(--pad-x);
}
.contact-cta::before {
  content: "";
  position: absolute;
  inset: -35% -20%;
  background:
    radial-gradient(ellipse 45% 55% at 50% 110%, rgba(124, 184, 255, 0.32), transparent 70%),
    radial-gradient(ellipse 35% 50% at 90% 0%, rgba(201, 194, 245, 0.24), transparent 70%),
    radial-gradient(ellipse 30% 45% at 8% 20%, rgba(159, 232, 208, 0.20), transparent 70%);
  animation: auroraDrift 16s ease-in-out infinite alternate;
  pointer-events: none;
}
.contact-cta > * { position: relative; }
.contact-cta h2 {
  font-size: clamp(26px, 3.4vw, 42px);
  font-weight: 700;
}
.contact-cta p {
  margin-top: 16px;
  color: var(--text-dim);
  font-size: 15.5px;
}
.contact-cta .actions {
  margin-top: 40px;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 28px;
  flex-wrap: wrap;
}

/* ------------------------------------------------------------
   页脚
   ------------------------------------------------------------ */
.footer {
  margin-top: var(--section-gap-dense);
  border-top: 1px solid var(--hairline);
  background: var(--surface);
  padding: 48px 0 36px;
  font-size: 13.5px;
  color: var(--text-faint);
}
.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) repeat(3, minmax(0, 1fr));
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--hairline);
}
.footer h5 {
  font-size: 14px;
  color: var(--text);
  font-weight: 600;
  margin-bottom: 16px;
}
.footer .f-brand .logo { margin-bottom: 14px; }
.footer ul li + li { margin-top: 10px; }
.footer a:hover { color: var(--text-dim); }
.footer-consult-link {
  appearance: none;
  border: 0;
  padding: 0;
  background: transparent;
  color: var(--accent-deep);
  font: inherit;
  cursor: pointer;
  transition: color 0.25s ease;
}
.footer-consult-link:hover { color: var(--text); }
.footer-consult-link:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
  border-radius: 3px;
}
.footer-bottom {
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

/* ------------------------------------------------------------
   品牌子页
   ------------------------------------------------------------ */
.sub-hero {
  position: relative;
  padding-top: clamp(120px, 16vh, 168px);
  padding-bottom: clamp(40px, 6vw, 72px);
  border-bottom: 1px solid var(--hairline);
  background: var(--bg);
  overflow: hidden;
}
.sub-hero::before {
  content: "";
  position: absolute;
  inset: -25% -15%;
  background:
    radial-gradient(ellipse 40% 50% at 85% 5%, rgba(124, 184, 255, 0.34), transparent 70%),
    radial-gradient(ellipse 32% 45% at 60% 15%, rgba(159, 232, 208, 0.26), transparent 70%),
    radial-gradient(ellipse 30% 40% at 100% 40%, rgba(201, 194, 245, 0.22), transparent 70%);
  animation: auroraDrift 16s ease-in-out infinite alternate;
  pointer-events: none;
}
.sub-hero .wrap { position: relative; }
.sub-hero .crumb {
  font-size: 13px;
  color: var(--text-faint);
  letter-spacing: 0.08em;
  margin-bottom: 26px;
}
.sub-hero .crumb a:hover { color: var(--accent-deep); }
.sub-hero h1 {
  font-size: clamp(34px, 4.6vw, 56px);
  font-weight: 700;
  line-height: 1.28;
}
.sub-hero .sub {
  margin-top: 20px;
  max-width: 620px;
  color: var(--text-dim);
  font-size: clamp(15px, 1.4vw, 17px);
}
.sub-hero .hero-actions { margin-top: 36px; }
.sub-hero .crumb span { color: var(--accent-deep) !important; }

/* 品牌页首屏右侧大号品牌名 */
.sub-hero .shb {
  position: absolute;
  right: 0;
  top: 40%;
  transform: translateY(-50%);
  text-align: right;
  pointer-events: none;
  user-select: none;
}
.sub-hero .shb .shb-name {
  display: block;
  font-size: clamp(72px, 9.5vw, 136px);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: 0.05em;
}
.sub-hero .shb .shb-en {
  display: block;
  margin-top: 12px;
  font-size: clamp(12px, 1.2vw, 14.5px);
  font-weight: 500;
  letter-spacing: 0.4em;
  color: var(--text-faint);
}
@media (max-width: 1080px) {
  .sub-hero .shb { display: none; }
}

/* 功能网格（品牌页通用） */
.feat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.feat-grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
.feat-card {
  border: 1px solid var(--hairline);
  border-radius: 12px;
  background: var(--surface);
  box-shadow: var(--shadow-sm);
  padding: 26px 24px;
  transition: border-color 0.3s, transform 0.3s, box-shadow 0.3s;
}
.feat-card:hover {
  border-color: rgba(59, 130, 246, 0.4);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}
.feat-card h4 { font-size: 16.5px; font-weight: 600; }
.feat-card h4::before {
  content: "";
  display: block;
  width: 22px; height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--mint));
  margin-bottom: 14px;
  border-radius: 2px;
  transition: width 0.35s ease;
}
.feat-card:hover h4::before { width: 46px; }
.feat-card p { margin-top: 8px; font-size: 13.5px; color: var(--text-dim); }

/* 数字化流程（编号列表区） */
.flow-list { counter-reset: flow; display: grid; gap: 0; }
.flow-item {
  counter-increment: flow;
  display: grid;
  grid-template-columns: 80px minmax(0, 0.9fr) minmax(0, 1.4fr);
  gap: clamp(16px, 3vw, 48px);
  padding: 30px 0;
  border-bottom: 1px solid var(--hairline);
  align-items: baseline;
}
.flow-item:first-child { border-top: 1px solid var(--hairline); }
.flow-item::before {
  content: "0" counter(flow);
  font-family: var(--font-num);
  font-size: 15px;
  color: var(--accent-deep);
  letter-spacing: 0.12em;
}
.flow-item h4 { font-size: 18px; font-weight: 600; }
.flow-item p { font-size: 14.5px; color: var(--text-dim); }

/* 适用场景 */
.scene-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.scene-card {
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
  padding: 32px 28px;
}
.scene-card h4 { font-size: 18px; font-weight: 600; }
.scene-card > p { margin-top: 10px; font-size: 14px; color: var(--text-dim); }
.scene-card ul { margin-top: 18px; }
.scene-card ul li {
  position: relative;
  padding-left: 18px;
  font-size: 13.5px;
  color: var(--text-dim);
}
.scene-card ul li + li { margin-top: 8px; }
.scene-card ul li::before {
  content: "";
  position: absolute;
  left: 0; top: 0.65em;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--mint));
}

/* 品牌页间互链 */
.other-brands {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.other-brands a {
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
  padding: 28px 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: border-color 0.3s, box-shadow 0.3s, transform 0.3s;
}
.other-brands a:hover {
  border-color: rgba(59, 130, 246, 0.4);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.other-brands b { font-size: 18px; font-weight: 600; display: block; }
.other-brands span { font-size: 13px; color: var(--text-faint); margin-top: 4px; display: block; }
.other-brands .arr { color: var(--accent-deep); font-size: 18px; }

/* ------------------------------------------------------------
   咨询弹窗
   ------------------------------------------------------------ */
.consult-mask {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(10, 23, 48, 0.56);
  backdrop-filter: blur(4px);
  display: grid;
  place-items: center;
  padding: 24px;
  opacity: 0;
  visibility: hidden;
  will-change: opacity;
  transition: opacity 0.25s ease, visibility 0.25s ease;
}
.consult-mask.show { opacity: 1; visibility: visible; }
.consult-box {
  position: relative;
  width: min(860px, 100%);
  max-height: calc(100vh - 48px);
  max-height: calc(100dvh - 48px);
  overflow: auto;
  border-radius: 16px;
  background: var(--surface);
  transform: translateY(18px) scale(0.985);
  will-change: transform;
  transition: transform 0.32s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 28px 72px rgba(5, 17, 39, 0.26);
}
.consult-mask.show .consult-box { transform: none; }
.consult-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  padding: 26px 32px 16px;
}
.consult-head .c-label {
  display: block;
  margin-bottom: 2px;
  color: var(--accent-deep);
  font-family: var(--font-num);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.14em;
}
.consult-head h2 {
  color: var(--text);
  font-size: 22px;
  font-weight: 700;
  line-height: 1.35;
}
.consult-close {
  width: 34px;
  height: 34px;
  flex: 0 0 34px;
  border: 0;
  border-radius: 50%;
  background: var(--bg);
  color: var(--text-dim);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1;
  cursor: pointer;
  transition: color 0.2s ease, background 0.2s ease, transform 0.2s ease;
}
.consult-close:hover {
  color: var(--text);
  background: #eaf1fb;
  transform: rotate(5deg);
}
.consult-close:focus-visible,
.consult-tabs button:focus-visible,
.c-switch:focus-visible,
.c-general:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}
.consult-tabs {
  display: flex;
  gap: 34px;
  min-height: 48px;
  padding: 0 32px;
  border-bottom: 1px solid var(--hairline);
}
.consult-tabs button {
  position: relative;
  appearance: none;
  border: 0;
  padding: 8px 0 13px;
  background: transparent;
  color: var(--text-dim);
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: color 0.22s ease;
}
.consult-tabs button span {
  margin-left: 5px;
  color: var(--text-faint);
  font-size: 11px;
  font-weight: 400;
}
.consult-tabs button::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: -1px;
  left: 0;
  height: 2px;
  border-radius: 2px;
  background: var(--accent-deep);
  transform: scaleX(0);
  transition: transform 0.24s cubic-bezier(0.2, 0.65, 0.3, 1);
}
.consult-tabs button:hover,
.consult-tabs button.active { color: var(--accent-deep); }
.consult-tabs button.active::after { transform: scaleX(1); }
.consult-content {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.92fr);
  min-height: 350px;
}
.consult-context {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: 54px 44px 46px;
  background:
    radial-gradient(circle at 88% 78%, rgba(53, 208, 165, 0.13), transparent 28%),
    radial-gradient(circle at 78% 18%, rgba(59, 130, 246, 0.16), transparent 38%),
    #f4f8fe;
}
.consult-context::after {
  content: "";
  position: absolute;
  right: 46px;
  bottom: 52px;
  z-index: -1;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow:
    -78px 28px 0 -1px rgba(59, 130, 246, 0.65),
    20px -82px 0 -1px rgba(53, 208, 165, 0.62),
    -120px -64px 0 -2px rgba(59, 130, 246, 0.48);
}
.c-orbit {
  position: absolute;
  right: -74px;
  bottom: -92px;
  z-index: -1;
  width: 300px;
  height: 300px;
  border: 1px solid rgba(59, 130, 246, 0.13);
  border-radius: 50%;
}
.c-orbit i {
  position: absolute;
  inset: 42px;
  border: 1px dashed rgba(59, 130, 246, 0.16);
  border-radius: 50%;
}
.c-orbit i:nth-child(2) { inset: 84px; }
.c-orbit i:nth-child(3) { inset: 124px; border-style: solid; }
.c-brand {
  display: flex;
  align-items: baseline;
  gap: 10px;
  color: var(--accent-deep);
}
.c-brand strong {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.05em;
}
.c-brand span {
  font-family: var(--font-num);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.15em;
  opacity: 0.7;
}
.c-industry {
  display: inline-flex;
  margin-top: 14px;
  padding: 2px 10px;
  border-radius: 999px;
  background: rgba(59, 130, 246, 0.09);
  color: var(--accent-deep);
  font-size: 12px;
}
.consult-context h3 {
  max-width: 360px;
  margin-top: 18px;
  color: var(--text);
  font-size: clamp(27px, 3.2vw, 38px);
  font-weight: 700;
  line-height: 1.28;
  letter-spacing: -0.02em;
  text-wrap: balance;
}
.c-description {
  max-width: 350px;
  margin-top: 18px;
  color: var(--text-dim);
  font-size: 14px;
  line-height: 1.8;
}
.c-services {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin-top: 28px;
  color: var(--text-dim);
  font-size: 12.5px;
}
.c-services li {
  position: relative;
  padding-left: 10px;
}
.c-services li::before {
  content: "";
  position: absolute;
  top: 0.72em;
  left: 0;
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--accent);
}
.consult-qr-panel {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 32px 34px 26px;
  text-align: center;
}
.consult-qr-panel h3 {
  color: var(--text);
  font-size: 18px;
  font-weight: 650;
  line-height: 1.5;
}
.c-qr-tip {
  margin-top: 3px;
  color: var(--text-faint);
  font-size: 12px;
}
.c-qr-wrap {
  position: relative;
  display: grid;
  place-items: center;
  overflow: hidden;
  width: 220px;
  height: 220px;
  margin-top: 18px;
  background: #fff;
}
.c-qr-loading {
  grid-area: 1 / 1;
  color: var(--text-faint);
  font-size: 12px;
}
.c-qr {
  grid-area: 1 / 1;
  width: 100%;
  height: 100%;
  object-fit: contain;
  transform: scale(var(--qr-display-scale, 1));
  transform-origin: center;
  opacity: 0;
  transition: opacity 0.2s ease;
  -webkit-touch-callout: default;
}
.c-qr-wrap.loaded .c-qr { opacity: 1; }
.c-qr-wrap.loaded .c-qr-loading { display: none; }
.c-qr-wrap.failed {
  border: 1px dashed var(--hairline-strong);
  border-radius: 10px;
  background: var(--bg);
}
.c-switch {
  appearance: none;
  border: 0;
  margin-top: 14px;
  padding: 5px 7px;
  background: transparent;
  color: var(--text-dim);
  font-family: var(--font-body);
  font-size: 12.5px;
  cursor: pointer;
  transition: color 0.2s ease;
}
.c-switch:hover { color: var(--accent-deep); }
.c-switch span {
  display: inline-block;
  margin-right: 4px;
  font-size: 15px;
  transition: transform 0.3s ease;
}
.c-switch:hover span { transform: rotate(140deg); }
.c-qr-status {
  min-height: 20px;
  color: var(--accent-deep);
  font-size: 11.5px;
}
.consult-foot {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 2px 10px;
  min-height: 66px;
  padding: 14px 32px;
  border-top: 1px solid var(--hairline);
  color: var(--text-faint);
  font-size: 13px;
}
.consult-foot > span,
.c-general { white-space: nowrap; }
.c-general {
  appearance: none;
  border: 0;
  padding: 6px 0;
  background: transparent;
  color: var(--accent-deep);
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: color 0.2s ease, transform 0.2s ease;
}
.c-general:hover {
  color: var(--text);
  transform: translateX(2px);
}
.general-mode .consult-context {
  background:
    radial-gradient(circle at 88% 78%, rgba(139, 124, 246, 0.12), transparent 30%),
    radial-gradient(circle at 78% 18%, rgba(59, 130, 246, 0.15), transparent 38%),
    #f5f7fd;
}

@media (max-width: 720px) {
  .consult-mask {
    place-items: end center;
    padding: 12px 0 0;
  }
  .consult-box {
    width: 100%;
    max-height: calc(100dvh - 12px);
    border-radius: 18px 18px 0 0;
  }
  .consult-head { padding: 20px 20px 12px; }
  .consult-head .c-label { display: none; }
  .consult-head h2 { font-size: 20px; }
  .consult-tabs {
    gap: 24px;
    min-height: 45px;
    padding: 0 20px;
  }
  .consult-tabs button {
    flex: 1 1 0;
    padding-bottom: 12px;
    font-size: 14px;
  }
  .consult-tabs button span { display: none; }
  .consult-content {
    grid-template-columns: 1fr;
    min-height: 0;
  }
  .consult-context {
    padding: 22px 24px 20px;
  }
  .c-orbit {
    right: -80px;
    bottom: -170px;
  }
  .c-industry { margin-top: 8px; }
  .consult-context h3 {
    margin-top: 10px;
    font-size: 24px;
  }
  .c-description {
    margin-top: 8px;
    line-height: 1.65;
  }
  .c-services { display: none; }
  .consult-qr-panel { padding: 22px 24px 16px; }
  .consult-qr-panel h3 { font-size: 17px; }
  .c-qr-wrap {
    width: 190px;
    height: 190px;
    margin-top: 12px;
  }
  .c-switch { margin-top: 8px; }
  .consult-foot {
    min-height: 58px;
    padding: 11px 20px;
  }
}

@media (max-width: 400px) {
  .consult-tabs { gap: 16px; }
  .consult-context { padding: 18px 20px 16px; }
  .c-brand strong { font-size: 16px; }
  .consult-context h3 { font-size: 21px; }
  .c-description { font-size: 13px; }
  .consult-qr-panel { padding-top: 18px; }
  .c-qr-wrap { width: 174px; height: 174px; }
  .consult-foot {
    gap: 0 8px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .consult-mask,
  .consult-box,
  .c-qr,
  .c-switch span,
  .c-general { transition: none !important; }
}

/* ------------------------------------------------------------
   滚动进入动效
   ------------------------------------------------------------ */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.8s cubic-bezier(0.2, 0.65, 0.3, 1),
    transform 0.8s cubic-bezier(0.2, 0.65, 0.3, 1);
}
.reveal.in { opacity: 1; transform: none; }
.reveal[data-delay="1"] { transition-delay: 0.1s; }
.reveal[data-delay="2"] { transition-delay: 0.2s; }
.reveal[data-delay="3"] { transition-delay: 0.3s; }

/* Hero 首屏载入动画 */
.hero .rise, .sub-hero .rise {
  opacity: 0;
  transform: translateY(26px);
  animation: heroRise 0.9s cubic-bezier(0.2, 0.65, 0.3, 1) forwards;
}
.hero .rise.d1, .sub-hero .rise.d1 { animation-delay: 0.15s; }
.hero .rise.d2, .sub-hero .rise.d2 { animation-delay: 0.3s; }
.hero .rise.d3, .sub-hero .rise.d3 { animation-delay: 0.45s; }
.hero .rise.d4, .sub-hero .rise.d4 { animation-delay: 0.6s; }
@keyframes heroRise { to { opacity: 1; transform: none; } }

/* ------------------------------------------------------------
   响应式
   ------------------------------------------------------------ */
@media (max-width: 960px) {
  .hero {
    padding-top: clamp(24px, 4vh, 40px);
    padding-bottom: clamp(16px, 2.5vh, 28px);
  }
  .hero-inner { grid-template-columns: 1fr; }
  .builders-card { justify-self: start; }
  .brand-panel { grid-template-columns: 1fr; }
  .ai-grid { grid-template-columns: 1fr 1fr; }
  .feat-grid, .feat-grid.cols-4 { grid-template-columns: 1fr 1fr; }
  .scene-grid { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .flow-item { grid-template-columns: 56px 1fr; }
  .flow-item p { grid-column: 2; }
  .industry-strip-inner {
    flex-direction: column;
    gap: 0;
    padding-top: 28px;
    padding-bottom: 28px;
  }
  .industry-divider {
    flex: 0 0 auto;
    width: 48%;
    height: 1px;
    margin: 8px auto;
    align-self: center;
    background: repeating-linear-gradient(
      90deg,
      rgba(122, 180, 235, 0.55) 0 3px,
      transparent 3px 8px
    );
  }
  .industry-item {
    width: 100%;
    padding: 18px 12px;
  }
  .industry-item .i-brand { font-size: 34px; }
  .industry-item .i-desc { max-width: none; }
}

/* 弱化动效偏好 */
@media (prefers-reduced-motion: reduce) {
  .hero::before, .sub-hero::before, .vision::before, .contact-cta::before,
  .bc-ring, .bc-orbit::before, .bc-center, .bc-node,
  .hero h1 em, .sub-hero h1 em, .vision blockquote em {
    animation: none !important;
  }
}

@media (max-width: 720px) {
  .nav-links {
    position: fixed;
    top: 72px; left: 0; right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--hairline);
    padding: 12px var(--pad-x) 24px;
    display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links > a,
  .nav-links .nav-parent { padding: 13px 0; width: 100%; font-size: 16px; }
  .nav-item.has-sub { width: 100%; }
  .nav-sub {
    position: static;
    left: auto;
    top: auto;
    transform: none;
    width: 100%;
    padding: 0 0 8px 4px;
    border: 0;
    border-radius: 0;
    background: transparent;
    box-shadow: none;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }
  .nav-sub::before { display: none; }
  .nav-sub-link {
    padding: 10px 12px;
    background: rgba(59, 130, 246, 0.04);
    margin-bottom: 6px;
  }
  .nav-sub-link b { font-size: 15px; }
  .nav-caret { display: none; }
  .nav-cta { display: none; }
  .nav-burger { display: flex; }
  .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); }
  .ai-grid { grid-template-columns: 1fr; }
  .feat-grid, .feat-grid.cols-4 { grid-template-columns: 1fr; }
  .other-brands { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-actions { flex-wrap: wrap; gap: 20px; }
}