/* ==========================================================
   内蒙古赛塔科技有限公司 官网样式 v3 「深空」
   全站暗色 · 玻璃拟态 · 蓝紫极光 · 终端风格标签
   ========================================================== */

:root {
  --c-primary: #7b96ff;
  --c-primary-deep: #4c6dff;
  --c-violet: #a78bfa;
  --c-violet-deep: #8b5cf6;
  --c-accent: #2fd6c3;
  --c-bg: #05080f;
  --c-bg-2: #070b18;
  --c-panel: rgba(255, 255, 255, 0.028);
  --c-panel-2: rgba(255, 255, 255, 0.05);
  --c-text: #e9edfb;
  --c-text-soft: #9aa6c8;
  --c-text-dim: #626e92;
  --c-border: rgba(148, 163, 224, 0.14);
  --c-border-hi: rgba(139, 132, 255, 0.45);
  --grad-main: linear-gradient(120deg, #4c6dff 0%, #8b5cf6 100%);
  --grad-bright: linear-gradient(100deg, #6ea8ff 0%, #9d7bff 55%, #d3b6ff 100%);
  --grad-violet: linear-gradient(120deg, #8b5cf6 0%, #4c6dff 100%);
  --grad-border: linear-gradient(135deg, rgba(108, 116, 255, 0.55), rgba(139, 92, 246, 0.18) 45%, rgba(47, 214, 195, 0.12));
  --radius: 18px;
  --radius-sm: 12px;
  --shadow-card: 0 10px 34px rgba(2, 5, 16, 0.5);
  --shadow-glow: 0 22px 56px rgba(76, 90, 255, 0.24), inset 0 0 0 1px rgba(150, 142, 255, 0.32);
  --glow-primary: 0 10px 32px rgba(94, 96, 255, 0.45);
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --header-h: 70px;
  --font: "Space Grotesk", "PingFang SC", "MiSans", "HarmonyOS Sans SC", "Microsoft YaHei",
    "微软雅黑", "Noto Sans SC", "Segoe UI", system-ui, sans-serif;
  --font-display: "Space Grotesk", "PingFang SC", "MiSans", "HarmonyOS Sans SC",
    "Microsoft YaHei", "微软雅黑", system-ui, sans-serif;
  --font-mono: "Space Grotesk", "JetBrains Mono", "Cascadia Code", ui-monospace, Consolas, "Courier New", monospace;
}

/* 自托管 Space Grotesk（拉丁，变量字重 300–700）——中文自动回退系统字体 */
@font-face {
  font-family: "Space Grotesk";
  font-style: normal;
  font-weight: 300 700;
  font-display: swap;
  src: url("../assets/fonts/space-grotesk-latin.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+2000-206F, U+2074,
    U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--c-text);
  background: var(--c-bg);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  counter-reset: sec;
}

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

::selection { background: rgba(139, 92, 246, 0.4); color: #fff; }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--c-bg); }
::-webkit-scrollbar-thumb {
  background: #232c4f;
  border-radius: 6px;
  border: 2px solid var(--c-bg);
}
::-webkit-scrollbar-thumb:hover { background: #2f3a66; }

:focus-visible {
  outline: 2px solid var(--c-violet-deep);
  outline-offset: 3px;
  border-radius: 4px;
}

/* 跳到主内容（键盘/读屏无障碍） */
.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 200;
  transform: translateY(-160%);
  padding: 10px 18px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  background: var(--grad-main);
  box-shadow: var(--glow-primary);
  transition: transform 0.25s var(--ease);
}
.skip-link:focus { transform: translateY(0); outline-offset: 4px; }

.container {
  width: min(1180px, 92%);
  margin: 0 auto;
}

/* ---------- 顶部导航 ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--header-h);
  z-index: 100;
  display: flex;
  align-items: center;
  background: rgba(5, 8, 15, 0.55);
  backdrop-filter: blur(18px) saturate(1.5);
  -webkit-backdrop-filter: blur(18px) saturate(1.5);
  transition: background 0.35s var(--ease), box-shadow 0.35s var(--ease), transform 0.4s var(--ease);
}
.site-header::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(110, 132, 255, 0.35), rgba(157, 123, 255, 0.35), transparent);
  pointer-events: none;
}
.site-header.scrolled {
  background: rgba(5, 8, 15, 0.9);
  box-shadow: 0 6px 30px rgba(0, 0, 0, 0.5);
}
.site-header.hidden { transform: translateY(-100%); }
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: #fff;
}
.brand-logo {
  width: 42px;
  height: 42px;
  flex: none;
  filter: drop-shadow(0 0 10px rgba(124, 108, 255, 0.45));
  transition: filter 0.3s var(--ease), transform 0.3s var(--ease);
}
.brand:hover .brand-logo {
  filter: drop-shadow(0 0 16px rgba(139, 108, 255, 0.75));
  transform: scale(1.05);
}
.brand-name { display: flex; flex-direction: column; line-height: 1.25; }
.brand-name .cn { font-size: 17.5px; font-weight: 700; letter-spacing: 1.5px; }
.brand-name .en {
  font-size: 9.5px;
  font-family: var(--font-mono);
  color: var(--c-text-dim);
  letter-spacing: 3px;
  text-transform: uppercase;
}

.main-nav { display: flex; align-items: center; gap: 4px; }
.main-nav a {
  position: relative;
  color: var(--c-text-soft);
  font-size: 15px;
  font-weight: 500;
  padding: 8px 15px;
  border-radius: 10px;
  transition: color 0.25s var(--ease);
}
.main-nav a:not(.nav-cta)::after {
  content: "";
  position: absolute;
  left: 15px;
  right: 15px;
  bottom: 3px;
  height: 2px;
  border-radius: 2px;
  background: var(--grad-main);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s var(--ease);
}
.main-nav a:hover { color: #fff; }
.main-nav a:hover:not(.nav-cta)::after { transform: scaleX(1); }
.main-nav a.active { color: #fff; font-weight: 600; }
.main-nav a.active:not(.nav-cta)::after { transform: scaleX(1); }
.main-nav a.nav-cta {
  margin-left: 12px;
  color: #fff;
  background: var(--grad-main);
  font-weight: 600;
  padding: 9px 24px;
  border-radius: 999px;
  box-shadow: 0 4px 18px rgba(94, 96, 255, 0.45);
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), filter 0.25s var(--ease);
}
.main-nav a.nav-cta:hover {
  filter: brightness(1.12);
  transform: translateY(-1px);
  box-shadow: 0 8px 26px rgba(94, 96, 255, 0.6);
}

/* ---------- 产品中心下拉 ---------- */
.nav-drop { position: relative; }
.nav-drop-t {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: inherit;
  font-size: 15px;
  color: var(--c-text-soft);
  background: none;
  border: none;
  padding: 8px 15px;
  border-radius: 10px;
  cursor: pointer;
  transition: color 0.25s var(--ease);
}
.nav-drop-t svg { transition: transform 0.25s var(--ease); }
.nav-drop:hover .nav-drop-t,
.nav-drop:focus-within .nav-drop-t { color: #fff; }
.nav-drop:hover .nav-drop-t svg,
.nav-drop.open .nav-drop-t svg { transform: rotate(180deg); }
.nav-drop-menu {
  position: absolute;
  top: calc(100% + 12px);
  left: 50%;
  transform: translateX(-50%) translateY(-8px);
  width: 300px;
  padding: 10px;
  border-radius: 16px;
  background: rgba(10, 15, 34, 0.97);
  border: 1px solid var(--c-border-hi);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(16px);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s var(--ease), transform 0.25s var(--ease), visibility 0.25s;
  z-index: 120;
}
.nav-drop:hover .nav-drop-menu,
.nav-drop:focus-within .nav-drop-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}
.nav-drop-menu::before { /* 悬停缓冲，避免鼠标移动时菜单闪退 */
  content: "";
  position: absolute;
  left: 0; right: 0; top: -14px; height: 14px;
}
.nav-drop-menu a {
  display: block;
  padding: 10px 14px;
  border-radius: 10px;
  transition: background 0.2s var(--ease);
}
.nav-drop-menu a::after { display: none !important; }
.nav-drop-menu a:hover { background: rgba(139, 92, 246, 0.14); }
.nav-drop-menu a b {
  display: block;
  font-size: 14.5px;
  font-weight: 600;
  color: #e6ebfb;
  margin-bottom: 2px;
}
.nav-drop-menu a span {
  display: block;
  font-size: 12.5px;
  color: var(--c-text-dim);
}
.nav-drop-menu a.active b { color: #fff; }
.nav-drop-menu a.active { background: rgba(139, 92, 246, 0.16); }
html[data-theme="light"] .nav-drop-t { color: #525d78; }
html[data-theme="light"] .nav-drop:hover .nav-drop-t { color: #10162a; }
html[data-theme="light"] .nav-drop-menu {
  background: rgba(255, 255, 255, 0.98);
  border-color: rgba(124, 58, 237, 0.28);
  box-shadow: 0 20px 50px rgba(30, 45, 110, 0.16);
}
html[data-theme="light"] .nav-drop-menu a b { color: #1b2233; }
html[data-theme="light"] .nav-drop-menu a:hover { background: rgba(139, 92, 246, 0.09); }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  width: 42px;
  height: 42px;
  cursor: pointer;
  position: relative;
  z-index: 110;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: #fff;
  margin: 5px auto;
  border-radius: 2px;
  transition: transform 0.3s var(--ease), opacity 0.3s var(--ease);
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero（极光呼吸背景） ---------- */
.hero {
  position: relative;
  background-color: var(--c-bg-2);
  background-image:
    radial-gradient(closest-side, rgba(139, 92, 246, 0.3), transparent),
    radial-gradient(closest-side, rgba(60, 100, 255, 0.32), transparent),
    radial-gradient(closest-side, rgba(47, 214, 195, 0.1), transparent);
  background-size: 940px 660px, 820px 600px, 640px 480px;
  background-position: 88% -22%, -12% 28%, 55% 112%;
  background-repeat: no-repeat;
  color: var(--c-text);
  padding: calc(var(--header-h) + 100px) 0 116px;
  overflow: hidden;
}
@media (prefers-reduced-motion: no-preference) {
  .hero { animation: aurora 20s ease-in-out infinite alternate; }
  @keyframes aurora {
    0%   { background-position: 88% -22%, -12% 28%, 55% 112%; }
    50%  { background-position: 72% -8%, 2% 44%, 40% 100%; }
    100% { background-position: 92% 2%, -18% 20%, 62% 118%; }
  }
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(75% 65% at 50% 35%, #000 20%, transparent 100%);
  mask-image: radial-gradient(75% 65% at 50% 35%, #000 20%, transparent 100%);
  pointer-events: none;
}
.hero::after {
  content: "";
  position: absolute;
  left: 6%;
  right: 6%;
  top: 46%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(110, 168, 255, 0.55), rgba(197, 139, 255, 0.55), transparent);
  pointer-events: none;
}
@media (prefers-reduced-motion: no-preference) {
  .hero::after { animation: flarePulse 5s ease-in-out infinite; }
  @keyframes flarePulse {
    0%, 100% { opacity: 0.45; }
    50% { opacity: 1; }
  }
}
#hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.5;
}
.hero .container {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 56px;
  align-items: center;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 12.5px;
  font-family: var(--font-mono);
  color: #cdbcff;
  border: 1px solid rgba(157, 123, 255, 0.35);
  background: rgba(139, 92, 246, 0.1);
  padding: 7px 18px;
  border-radius: 999px;
  margin-bottom: 28px;
  letter-spacing: 1.5px;
  backdrop-filter: blur(6px);
}
.hero-tag::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #a78bfa;
  box-shadow: 0 0 12px #a78bfa;
}
@media (prefers-reduced-motion: no-preference) {
  .hero-tag::before { animation: dotBlink 2.4s ease-in-out infinite; }
  @keyframes dotBlink {
    0%, 100% { box-shadow: 0 0 4px #a78bfa; opacity: 0.7; }
    50% { box-shadow: 0 0 14px #a78bfa; opacity: 1; }
  }
}

.hero h1 {
  font-size: clamp(30px, 4.4vw, 54px);
  font-weight: 800;
  line-height: 1.26;
  letter-spacing: 1px;
  margin-bottom: 24px;
  background: linear-gradient(180deg, #ffffff 55%, #b9c4ea);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero h1 .grad {
  background: var(--grad-bright);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
@media (prefers-reduced-motion: no-preference) {
  .hero h1 .grad {
    background-size: 200% auto;
    animation: gradShift 6s ease-in-out infinite alternate;
  }
  @keyframes gradShift {
    0% { background-position: 0% 50%; }
    100% { background-position: 100% 50%; }
  }
  .brand-logo { animation: logoPulse 5s ease-in-out infinite; }
  @keyframes logoPulse {
    0%, 100% { filter: drop-shadow(0 0 8px rgba(124, 108, 255, 0.35)); }
    50% { filter: drop-shadow(0 0 16px rgba(139, 108, 255, 0.65)); }
  }
}
.hero-desc {
  font-size: 17px;
  font-weight: 500;
  color: var(--c-text-soft);
  max-width: 540px;
  margin-bottom: 40px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 16px;
  font-weight: 600;
  padding: 14px 36px;
  border-radius: 999px;
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), filter 0.25s var(--ease), background 0.25s var(--ease), border-color 0.25s var(--ease);
  cursor: pointer;
  border: none;
  font-family: inherit;
  letter-spacing: 0.5px;
}
.btn:active { transform: scale(0.97); }
.btn-primary {
  position: relative;
  overflow: hidden;
  color: #fff;
  background: var(--grad-main);
  box-shadow: var(--glow-primary), inset 0 1px 0 rgba(255, 255, 255, 0.25);
}
.btn-primary::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: -80%;
  width: 50%;
  background: linear-gradient(105deg, transparent, rgba(255, 255, 255, 0.35), transparent);
  transform: skewX(-20deg);
  transition: left 0.6s var(--ease);
  pointer-events: none;
}
.btn-primary:hover::before { left: 130%; }
.btn-primary:hover {
  filter: brightness(1.12);
  transform: translateY(-2px);
  box-shadow: 0 16px 40px rgba(94, 96, 255, 0.55), inset 0 1px 0 rgba(255, 255, 255, 0.25);
}
.btn-ghost {
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.24);
  background: rgba(255, 255, 255, 0.04);
  backdrop-filter: blur(6px);
}
.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(157, 123, 255, 0.6);
  transform: translateY(-2px);
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

.hero-visual { position: relative; }
.hero-visual::before {
  content: "";
  position: absolute;
  inset: -12% -8%;
  background: conic-gradient(from 210deg, transparent 12%, rgba(108, 116, 255, 0.18), rgba(139, 92, 246, 0.22), transparent 65%);
  border-radius: 50%;
  filter: blur(34px);
  pointer-events: none;
}
.hero-visual svg {
  position: relative;
  width: 100%;
  height: auto;
  filter: drop-shadow(0 30px 60px rgba(4, 8, 30, 0.75));
}
@media (prefers-reduced-motion: no-preference) {
  .hero-visual { animation: float 7s ease-in-out infinite; }
  @keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-14px); }
  }
}

.hero-stats {
  position: relative;
  z-index: 2;
  margin-top: 88px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
.stat-item {
  position: relative;
  text-align: center;
  padding: 26px 12px;
  border-radius: var(--radius);
  background: var(--c-panel);
  border: 1px solid rgba(255, 255, 255, 0.09);
  backdrop-filter: blur(10px);
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease), background 0.3s var(--ease);
}
.stat-item:hover {
  transform: translateY(-4px);
  border-color: rgba(157, 123, 255, 0.45);
  background: rgba(139, 92, 246, 0.08);
}
.stat-item .num {
  font-size: 34px;
  font-weight: 800;
  letter-spacing: 1px;
  background: var(--grad-bright);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.stat-item .label {
  font-size: 13px;
  color: var(--c-text-soft);
  margin-top: 6px;
  letter-spacing: 1.5px;
}

/* ---------- 通用 section ---------- */
.section {
  position: relative;
  padding: 112px 0;
  background: var(--c-bg);
}
.section.soft {
  background:
    radial-gradient(760px 320px at 88% 0%, rgba(139, 92, 246, 0.07), transparent 65%),
    radial-gradient(760px 320px at 4% 100%, rgba(76, 109, 255, 0.07), transparent 65%),
    #070c1a;
  border-top: 1px solid rgba(148, 163, 224, 0.07);
  border-bottom: 1px solid rgba(148, 163, 224, 0.07);
}
.section-head {
  position: relative;
  z-index: 0;
  text-align: center;
  max-width: 680px;
  margin: 0 auto 64px;
}
/* 章节幽灵编号 */
.section-head::before {
  counter-increment: sec;
  content: "0" counter(sec);
  position: absolute;
  top: -58px;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-mono);
  font-size: 128px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: 6px;
  background: linear-gradient(180deg, rgba(124, 136, 255, 0.16), transparent 78%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  pointer-events: none;
  z-index: -1;
}
.section-head .kicker,
.kicker {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 2.6px;
  background: var(--grad-bright);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 16px;
  text-transform: uppercase;
}
.section-head .kicker::before, .kicker::before { content: "[ "; }
.section-head .kicker::after, .kicker::after { content: " ]"; }
.section-head h2 {
  font-size: clamp(28px, 3.5vw, 46px);
  font-weight: 800;
  letter-spacing: 0.2px;
  margin-bottom: 18px;
  line-height: 1.26;
  background: linear-gradient(176deg, #ffffff 52%, #aeb9e4);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.section-head p { color: var(--c-text-soft); font-size: 16.5px; line-height: 1.7; }

/* ---------- 玻璃渐变描边卡片（通用） ---------- */
.product-card,
.feature-item,
.scene-item,
.step-item,
.post-card,
details.acc-item,
.contact-form,
.alt-media {
  background:
    linear-gradient(rgba(13, 18, 38, 0.72), rgba(10, 14, 30, 0.72)) padding-box,
    var(--grad-border) border-box;
  border: 1px solid transparent;
  box-shadow: var(--shadow-card);
}

/* ---------- 产品卡片 ---------- */
.product-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}
/* 3 列产品栅格（首页六大产品，3 + 3） */
.product-grid.three { grid-template-columns: repeat(3, 1fr); }
.product-grid.three .product-card { padding: 38px 30px 34px; }
.product-grid.three .product-card h3 { font-size: 20px; }
.product-grid.three .pc-num { font-size: 48px; top: 16px; right: 22px; }
@media (max-width: 1080px) { .product-grid.three { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 700px) { .product-grid.three { grid-template-columns: 1fr; } }
.product-card {
  position: relative;
  border-radius: var(--radius);
  padding: 46px 40px 42px;
  overflow: hidden;
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease);
}
.product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-glow);
}
.product-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: var(--grad-main);
}
.product-card::after {
  content: "";
  position: absolute;
  top: -90px;
  right: -90px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(108, 106, 255, 0.16), transparent 65%);
  transition: transform 0.4s var(--ease);
}
.product-card:hover::after { transform: scale(1.35); }
.product-card.violet::before { background: var(--grad-violet); }
/* 编辑感索引大数字 */
.pc-num {
  position: absolute;
  top: 18px;
  right: 26px;
  z-index: 1;
  font-family: var(--font-display);
  font-size: 60px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -1px;
  background: linear-gradient(180deg, rgba(124, 136, 255, 0.22), transparent 85%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  pointer-events: none;
}
.product-icon {
  position: relative;
  z-index: 1;
  width: 66px;
  height: 66px;
  border-radius: 18px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, rgba(76, 109, 255, 0.16), rgba(139, 92, 246, 0.18));
  border: 1px solid rgba(139, 132, 255, 0.3);
  margin-bottom: 26px;
  transition: transform 0.35s var(--ease);
}
.product-card:hover .product-icon { transform: translateY(-3px) scale(1.05); }
.product-card h3 { font-size: 23px; font-weight: 800; margin-bottom: 6px; letter-spacing: 0.5px; color: #fff; }
.product-card .sub {
  font-size: 12px;
  font-family: var(--font-mono);
  color: var(--c-primary);
  font-weight: 700;
  letter-spacing: 2px;
  margin-bottom: 18px;
  text-transform: uppercase;
}
.product-card.violet .sub { color: var(--c-violet); }
.product-card p.desc { color: var(--c-text-soft); font-size: 15px; margin-bottom: 24px; }
.product-card ul { margin-bottom: 30px; }
.product-card ul li {
  position: relative;
  padding-left: 27px;
  font-size: 14.5px;
  color: #cdd6f2;
  margin-bottom: 11px;
}
.product-card ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 7px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(76, 109, 255, 0.2), rgba(139, 92, 246, 0.2));
}
.product-card ul li::after {
  content: "";
  position: absolute;
  left: 4.5px;
  top: 11.5px;
  width: 7px;
  height: 4px;
  border-left: 2px solid #8fa6ff;
  border-bottom: 2px solid #8fa6ff;
  transform: rotate(-45deg);
}
.product-card .link-more {
  position: relative;
  z-index: 1;
  font-weight: 700;
  font-size: 15px;
  color: var(--c-primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.product-card.violet .link-more { color: var(--c-violet); }
.product-card .link-more::after { content: "→"; transition: transform 0.25s var(--ease); }
.product-card .link-more:hover::after { transform: translateX(6px); }

/* ---------- 优势 ---------- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.feature-item {
  position: relative;
  border-radius: var(--radius);
  padding: 36px 30px;
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.feature-item:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-glow);
}
.feature-item .f-icon {
  width: 54px;
  height: 54px;
  border-radius: 15px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, rgba(76, 109, 255, 0.14), rgba(139, 92, 246, 0.16));
  border: 1px solid rgba(139, 132, 255, 0.28);
  margin-bottom: 22px;
  transition: transform 0.3s var(--ease);
}
.feature-item:hover .f-icon { transform: scale(1.08) rotate(-3deg); }
/* 三等分卡：按列微调图标色相，避免三个盒子完全一模一样 */
.feature-grid .feature-item:nth-child(3n+2) .f-icon {
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.18), rgba(76, 109, 255, 0.12));
  border-color: rgba(150, 130, 255, 0.3);
}
.feature-grid .feature-item:nth-child(3n) .f-icon {
  background: linear-gradient(135deg, rgba(47, 214, 195, 0.15), rgba(76, 109, 255, 0.13));
  border-color: rgba(47, 214, 195, 0.3);
}
.feature-item h4 { font-size: 18px; font-weight: 700; margin-bottom: 9px; color: #fff; }
.feature-item p { font-size: 14.5px; color: var(--c-text-soft); }

/* ---------- 流程 ---------- */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
  counter-reset: step;
}
.step-item {
  position: relative;
  border-radius: var(--radius);
  padding: 64px 26px 32px;
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
  overflow: hidden;
}
.step-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-glow);
}
.step-item::before {
  counter-increment: step;
  content: "0" counter(step);
  position: absolute;
  top: 16px;
  left: 26px;
  font-family: var(--font-mono);
  font-size: 30px;
  font-weight: 700;
  background: var(--grad-bright);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.step-item::after {
  content: "";
  position: absolute;
  top: 32px;
  left: 88px;
  right: 26px;
  height: 1px;
  background: linear-gradient(90deg, rgba(139, 132, 255, 0.5), transparent);
}
.step-item h4 { font-size: 17px; font-weight: 700; margin-bottom: 9px; color: #fff; }
.step-item p { font-size: 14px; color: var(--c-text-soft); }

/* ---------- 场景标签 ---------- */
.scene-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.scene-item {
  position: relative;
  border-radius: var(--radius);
  padding: 30px 22px;
  text-align: center;
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.scene-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-glow);
}
.scene-item .s-icon {
  width: 52px;
  height: 52px;
  margin: 0 auto 15px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 22px;
  background: linear-gradient(135deg, rgba(76, 109, 255, 0.14), rgba(139, 92, 246, 0.16));
  border: 1px solid rgba(139, 132, 255, 0.28);
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease);
}
.scene-item:hover .s-icon {
  transform: scale(1.08);
  border-color: rgba(139, 132, 255, 0.5);
}
.scene-item h5 { font-size: 16px; font-weight: 700; margin-bottom: 6px; color: #fff; }
.scene-item p { font-size: 13.5px; color: var(--c-text-soft); }

/* 3 列九宫格（适用行业） */
.scene-grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 860px) { .scene-grid.cols-3 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .scene-grid.cols-3 { grid-template-columns: 1fr; } }

/* ---------- CTA 横幅 ---------- */
.cta-banner {
  position: relative;
  background:
    radial-gradient(560px 280px at 50% -30%, rgba(94, 96, 255, 0.42), transparent 70%),
    radial-gradient(420px 240px at 88% 110%, rgba(139, 92, 246, 0.28), transparent 70%),
    #0a0f22;
  border: 1px solid rgba(112, 100, 255, 0.3);
  border-radius: 26px;
  padding: 72px 48px;
  text-align: center;
  color: #fff;
  overflow: hidden;
}
.cta-banner::before {
  content: "";
  position: absolute;
  left: 10%;
  right: 10%;
  top: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(140, 150, 255, 0.75), transparent);
}
.cta-banner::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 48px 48px;
  -webkit-mask-image: radial-gradient(70% 80% at 50% 20%, #000 10%, transparent 100%);
  mask-image: radial-gradient(70% 80% at 50% 20%, #000 10%, transparent 100%);
  pointer-events: none;
}
.cta-banner > * { position: relative; z-index: 1; }
.cta-banner h2 { font-size: clamp(26px, 3.2vw, 40px); font-weight: 800; margin-bottom: 16px; letter-spacing: 0.2px; line-height: 1.24; }
.cta-banner p { color: var(--c-text-soft); margin-bottom: 34px; font-size: 16px; }

/* ---------- 产品详情页 ---------- */
.page-hero {
  position: relative;
  background-color: var(--c-bg-2);
  background-image:
    radial-gradient(closest-side, rgba(76, 109, 255, 0.32), transparent),
    radial-gradient(closest-side, rgba(139, 92, 246, 0.2), transparent);
  background-size: 880px 560px, 680px 480px;
  background-position: 88% -25%, -8% 105%;
  background-repeat: no-repeat;
  color: var(--c-text);
  padding: calc(var(--header-h) + 84px) 0 96px;
  overflow: hidden;
}
.page-hero.violet {
  background-image:
    radial-gradient(closest-side, rgba(139, 92, 246, 0.34), transparent),
    radial-gradient(closest-side, rgba(76, 109, 255, 0.2), transparent);
}
.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(70% 70% at 50% 30%, #000 15%, transparent 100%);
  mask-image: radial-gradient(70% 70% at 50% 30%, #000 15%, transparent 100%);
  pointer-events: none;
}
.page-hero .container {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 56px;
  align-items: center;
}
/* 内页统一门环光环点缀（品牌延续） */
.ph-ring {
  position: absolute;
  top: -150px;
  right: -110px;
  width: min(460px, 52vw);
  height: auto;
  opacity: 0.26;
  z-index: 0;
  pointer-events: none;
  filter: drop-shadow(0 0 34px rgba(124, 108, 255, 0.4));
  -webkit-mask-image: radial-gradient(closest-side, #000 60%, transparent);
  mask-image: radial-gradient(closest-side, #000 60%, transparent);
}
@media (prefers-reduced-motion: no-preference) {
  .ph-ring { animation: phFloat 9s ease-in-out infinite; }
  @keyframes phFloat {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    50% { transform: translate(0, 16px) rotate(3deg); }
  }
}
html[data-theme="light"] .ph-ring { opacity: 0.2; }
@media (max-width: 640px) { .ph-ring { width: 300px; top: -110px; right: -80px; } }
.page-hero h1 {
  font-size: clamp(30px, 4vw, 52px);
  font-weight: 800;
  line-height: 1.22;
  margin: 18px 0 22px;
  letter-spacing: 0.2px;
  background: linear-gradient(176deg, #ffffff 52%, #aeb9e4);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.page-hero .hero-desc { margin-bottom: 34px; }
.page-hero .crumb {
  font-size: 12.5px;
  font-family: var(--font-mono);
  color: var(--c-text-dim);
  letter-spacing: 1px;
}
.page-hero .crumb a { transition: color 0.2s; }
.page-hero .crumb a:hover { color: #fff; }
.page-hero .hero-visual svg { filter: drop-shadow(0 26px 54px rgba(4, 8, 30, 0.75)); }

.alt-rows { display: flex; flex-direction: column; gap: 96px; }
.alt-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 68px;
  align-items: center;
}
.alt-row:nth-child(even) .alt-media { order: 2; }
.alt-row h3 {
  font-size: 27px;
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: 0.5px;
  color: #fff;
}
.alt-row p { color: var(--c-text-soft); font-size: 15.5px; margin-bottom: 20px; }
.alt-row ul li {
  position: relative;
  padding-left: 25px;
  margin-bottom: 11px;
  font-size: 15px;
  color: #cdd6f2;
}
.alt-row ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 8px;
  height: 8px;
  border-radius: 2.5px;
  background: var(--grad-main);
  box-shadow: 0 0 8px rgba(108, 106, 255, 0.6);
}
.alt-media {
  border-radius: 22px;
  overflow: hidden;
  padding: 10px;
  transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease);
}
.alt-media:hover {
  transform: translateY(-6px) scale(1.01);
  box-shadow: var(--shadow-glow);
}
.alt-media svg { width: 100%; height: auto; border-radius: 14px; }

/* ---------- 关于我们 ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 60px;
  align-items: center;
}
.about-grid h3 { font-size: 27px; font-weight: 800; margin-bottom: 18px; color: #fff; }
.about-grid p { color: var(--c-text-soft); margin-bottom: 15px; font-size: 15.5px; }
.about-grid strong { color: #dfe6fa; }
.about-grid svg { border-radius: 20px; }

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

/* ---------- 联系 ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
}
.contact-info h3 { font-size: 24px; font-weight: 800; margin-bottom: 12px; color: #fff; }
.contact-info > p { color: var(--c-text-soft); margin-bottom: 28px; }
.contact-list li {
  display: flex;
  gap: 15px;
  align-items: flex-start;
  padding: 17px 0;
  border-bottom: 1px dashed rgba(148, 163, 224, 0.18);
}
.contact-list .c-icon {
  flex: none;
  width: 44px;
  height: 44px;
  border-radius: 13px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, rgba(76, 109, 255, 0.14), rgba(139, 92, 246, 0.16));
  border: 1px solid rgba(139, 132, 255, 0.28);
}
.contact-list .c-label {
  font-size: 12px;
  font-family: var(--font-mono);
  color: var(--c-text-dim);
  letter-spacing: 1px;
}
.contact-list .c-value { font-size: 15.5px; font-weight: 600; color: #e6ebfb; }

.contact-form {
  position: relative;
  border-radius: 20px;
  padding: 38px;
  overflow: hidden;
}
.contact-form::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: var(--grad-main);
}
.contact-form h3 { font-size: 20px; font-weight: 800; margin-bottom: 22px; color: #fff; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 16px; }
.form-group label {
  display: block;
  font-size: 13.5px;
  font-weight: 600;
  margin-bottom: 7px;
  color: #cdd6f2;
}
.form-group input,
.form-group textarea {
  width: 100%;
  font-family: inherit;
  font-size: 14.5px;
  color: var(--c-text);
  padding: 12px 15px;
  border: 1px solid rgba(148, 163, 224, 0.2);
  border-radius: var(--radius-sm);
  background: rgba(6, 10, 22, 0.65);
  transition: border-color 0.25s var(--ease), box-shadow 0.25s var(--ease), background 0.25s var(--ease);
  resize: vertical;
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: #4d5878; }
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--c-violet-deep);
  box-shadow: 0 0 0 3.5px rgba(139, 92, 246, 0.18);
  background: rgba(8, 13, 28, 0.9);
}
.form-group input.invalid,
.form-group textarea.invalid {
  border-color: rgba(255, 106, 122, 0.7);
  background: rgba(40, 12, 20, 0.5);
}
.form-group input.invalid:focus,
.form-group textarea.invalid:focus {
  border-color: #ff6a7a;
  box-shadow: 0 0 0 3.5px rgba(255, 106, 122, 0.18);
}
.field-error {
  display: block;
  margin-top: 7px;
  font-size: 12.5px;
  font-weight: 500;
  color: #ff8a96;
}
.field-error[hidden] { display: none; }
.form-hint { font-size: 13px; color: var(--c-text-dim); margin-top: 12px; }
.form-success {
  display: none;
  margin-top: 14px;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  background: rgba(47, 214, 195, 0.12);
  border: 1px solid rgba(47, 214, 195, 0.3);
  color: #56e6d2;
  font-size: 14px;
  font-weight: 600;
}
.form-success.show { display: block; }

/* ---------- 页脚 ---------- */
.site-footer {
  position: relative;
  background:
    radial-gradient(680px 260px at 80% 0%, rgba(94, 96, 255, 0.1), transparent 65%),
    #04060d;
  color: var(--c-text-soft);
  padding: 70px 0 0;
  font-size: 14px;
}
.site-footer::before {
  content: "";
  position: absolute;
  left: 0; right: 0; top: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(110, 132, 255, 0.4), rgba(157, 123, 255, 0.4), transparent);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 52px;
}
.footer-brand .brand { margin-bottom: 18px; }
.footer-brand p { max-width: 300px; font-size: 13.5px; line-height: 1.85; }
.footer-col h5 {
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 20px;
  letter-spacing: 1px;
}
.footer-col li { margin-bottom: 11px; }
.footer-col a { transition: color 0.2s, padding-left 0.2s var(--ease); }
.footer-col a:hover { color: #fff; padding-left: 4px; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 24px 0;
  font-size: 13px;
  color: var(--c-text-dim);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}
.footer-bottom a:hover { color: #fff; }

/* ---------- 时间线（发展历程） ---------- */
.timeline {
  position: relative;
  max-width: 720px;
  margin: 0 auto;
}
.timeline::before {
  content: "";
  position: absolute;
  left: 19px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, rgba(76, 109, 255, 0.6), rgba(139, 92, 246, 0.6), rgba(139, 92, 246, 0.06));
}
.tl-item { position: relative; padding: 0 0 40px 66px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-dot {
  position: absolute;
  left: 8px;
  top: 2px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--grad-main);
  box-shadow: 0 0 0 5px rgba(108, 106, 255, 0.16), 0 0 18px rgba(108, 106, 255, 0.6);
  display: grid;
  place-items: center;
}
.tl-dot::after {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #fff;
}
.tl-item .tl-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 2.5px;
  background: var(--grad-bright);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 6px;
  text-transform: uppercase;
}
.tl-item h4 { font-size: 17.5px; font-weight: 700; margin-bottom: 7px; color: #fff; }
.tl-item p { font-size: 14.5px; color: var(--c-text-soft); }

/* ---------- 手风琴（职位 / FAQ） ---------- */
.acc-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
details.acc-item {
  position: relative;
  border-radius: var(--radius);
  transition: box-shadow 0.3s var(--ease);
}
details.acc-item:hover,
details.acc-item[open] { box-shadow: var(--shadow-glow); }
details.acc-item summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 21px 26px;
  font-weight: 700;
  font-size: 16.5px;
  color: #fff;
  flex-wrap: wrap;
}
details.acc-item summary::-webkit-details-marker { display: none; }
.acc-badge {
  font-size: 11.5px;
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--c-violet);
  background: rgba(139, 92, 246, 0.12);
  border: 1px solid rgba(139, 92, 246, 0.32);
  padding: 3px 13px;
  border-radius: 999px;
  letter-spacing: 1px;
  flex: none;
}
summary .acc-arrow {
  margin-left: auto;
  flex: none;
  width: 27px;
  height: 27px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, rgba(76, 109, 255, 0.16), rgba(139, 92, 246, 0.18));
  border: 1px solid rgba(139, 132, 255, 0.25);
  transition: transform 0.3s var(--ease);
  font-size: 12px;
  color: var(--c-primary);
}
details[open] .acc-arrow { transform: rotate(180deg); }
.acc-body {
  padding: 2px 26px 26px;
  color: var(--c-text-soft);
  font-size: 14.5px;
}
.acc-body h6 {
  font-size: 14.5px;
  font-weight: 700;
  color: #dfe6fa;
  margin: 16px 0 9px;
}
.acc-body h6:first-child { margin-top: 0; }
.acc-body p { margin-bottom: 10px; }
.acc-body ul li {
  position: relative;
  padding-left: 21px;
  margin-bottom: 8px;
}
.acc-body ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9.5px;
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: var(--grad-main);
}

/* ---------- 行业洞察 文章 ---------- */
.post-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.post-card {
  position: relative;
  display: flex;
  flex-direction: column;
  border-radius: var(--radius);
  padding: 32px 30px;
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.post-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-glow);
}
.post-card .p-tag {
  align-self: flex-start;
  font-size: 11.5px;
  font-family: var(--font-mono);
  font-weight: 700;
  letter-spacing: 1.5px;
  color: var(--c-primary);
  background: rgba(76, 109, 255, 0.12);
  border: 1px solid rgba(76, 109, 255, 0.32);
  padding: 3px 13px;
  border-radius: 999px;
}
.post-card h4 { font-size: 18px; font-weight: 700; line-height: 1.55; margin: 16px 0 10px; color: #fff; }
.post-card p { font-size: 14px; color: var(--c-text-soft); margin-bottom: 20px; }
.post-card .p-more {
  margin-top: auto;
  font-weight: 700;
  font-size: 14.5px;
  color: var(--c-primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.post-card .p-more::after { content: "↓"; transition: transform 0.25s var(--ease); }
.post-card:hover .p-more::after { transform: translateY(3px); }

.article {
  max-width: 820px;
  margin: 0 auto 56px;
  padding: 42px 46px;
  border-radius: 22px;
  background:
    linear-gradient(rgba(13, 18, 38, 0.6), rgba(10, 14, 30, 0.6)) padding-box,
    var(--grad-border) border-box;
  border: 1px solid transparent;
  scroll-margin-top: calc(var(--header-h) + 24px);
}
.article:last-child { margin-bottom: 0; }
.article h3 {
  position: relative;
  font-size: 24px;
  font-weight: 800;
  line-height: 1.5;
  margin-bottom: 10px;
  padding-left: 18px;
  color: #fff;
}
.article h3::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 4px;
  border-radius: 3px;
  background: var(--grad-main);
}
.article .a-meta {
  font-size: 12px;
  font-family: var(--font-mono);
  color: var(--c-text-dim);
  margin-bottom: 20px;
  padding-left: 18px;
  letter-spacing: 1px;
}
.article h5 { font-size: 17px; font-weight: 700; margin: 26px 0 10px; color: #dfe6fa; }
.article p { color: var(--c-text-soft); font-size: 15px; margin-bottom: 13px; }
.article ul { margin-bottom: 14px; }
.article ul li {
  position: relative;
  padding-left: 22px;
  margin-bottom: 8px;
  font-size: 14.5px;
  color: var(--c-text-soft);
}
.article ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9.5px;
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: var(--grad-main);
}
.article strong { color: #dfe6fa; }

/* ---------- 滚动进度条 ---------- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  z-index: 200;
  background: var(--grad-main);
  transform-origin: 0 50%;
  transform: scaleX(0);
  pointer-events: none;
  box-shadow: 0 0 10px rgba(108, 106, 255, 0.6);
}

/* ---------- 卡片鼠标光斑 ---------- */
.spot-overlay {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  opacity: 0;
  transition: opacity 0.35s var(--ease);
  background: radial-gradient(340px circle at var(--mx, 50%) var(--my, 50%), rgba(122, 122, 255, 0.14), transparent 65%);
  pointer-events: none;
  z-index: 0;
}
.stat-item .spot-overlay {
  background: radial-gradient(300px circle at var(--mx, 50%) var(--my, 50%), rgba(157, 123, 255, 0.18), transparent 65%);
}
.product-card:hover .spot-overlay,
.feature-item:hover .spot-overlay,
.scene-item:hover .spot-overlay,
.step-item:hover .spot-overlay,
.post-card:hover .spot-overlay,
details.acc-item:hover .spot-overlay,
.stat-item:hover .spot-overlay { opacity: 1; }

/* ---------- 3D 倾斜 ---------- */
.tilt { transform-style: preserve-3d; will-change: transform; }

/* ---------- AI 平台滚动横幅 ---------- */
.marquee-wrap {
  position: relative;
  z-index: 2;
  margin-top: 64px;
}
.marquee-label {
  text-align: center;
  font-size: 12px;
  font-family: var(--font-mono);
  letter-spacing: 3px;
  color: var(--c-text-dim);
  margin-bottom: 22px;
  text-transform: uppercase;
}
.marquee {
  overflow: hidden;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 14%, #000 86%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 14%, #000 86%, transparent);
}
.marquee-track {
  display: flex;
  gap: 14px;
  width: max-content;
  animation: marqueeScroll 30s linear infinite;
}
.marquee:hover .marquee-track { animation-play-state: paused; }
@keyframes marqueeScroll {
  to { transform: translateX(-50%); }
}
.marquee-track span {
  flex: none;
  font-size: 14.5px;
  font-weight: 600;
  letter-spacing: 1px;
  color: #c9d4f2;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 10px 26px;
  border-radius: 999px;
  backdrop-filter: blur(6px);
  transition: border-color 0.3s var(--ease), color 0.3s var(--ease), background 0.3s var(--ease);
}
.marquee-track span:hover {
  color: #fff;
  border-color: rgba(157, 123, 255, 0.55);
  background: rgba(139, 92, 246, 0.12);
}
@media (prefers-reduced-motion: reduce) {
  .marquee-track { animation: none; flex-wrap: wrap; justify-content: center; width: auto; }
  .marquee { mask-image: none; -webkit-mask-image: none; }
}

/* ---------- 回到顶部 ---------- */
.to-top {
  position: fixed;
  right: 26px;
  bottom: 26px;
  z-index: 90;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: none;
  cursor: pointer;
  display: grid;
  place-items: center;
  background: var(--grad-main);
  color: #fff;
  box-shadow: 0 8px 24px rgba(94, 96, 255, 0.45);
  opacity: 0;
  visibility: hidden;
  transform: translateY(14px);
  transition: opacity 0.35s var(--ease), transform 0.35s var(--ease), visibility 0.35s, filter 0.2s;
}
.to-top.show { opacity: 1; visibility: visible; transform: none; }
.to-top:hover { filter: brightness(1.15); }
.to-top svg { display: block; }

/* ---------- 滚动进入动画 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  filter: blur(6px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease), filter 0.8s var(--ease);
}
.reveal.visible { opacity: 1; transform: none; filter: blur(0); }
.reveal-d1 { transition-delay: 0.12s; }
.reveal-d2 { transition-delay: 0.24s; }
.reveal-d3 { transition-delay: 0.36s; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; filter: none; transition: none; }
  html { scroll-behavior: auto; }
}

h1, h2, h3, .section-head p { text-wrap: balance; }

/* ==========================================================
   C 档：开场过渡 / 光晕跟随 / 数字微光
   ========================================================== */

/* #8 开场「开门」过渡（首页首访） */
.intro { position: fixed; inset: 0; z-index: 1000; pointer-events: none; }
.intro.hidden { display: none; }
.intro-panel {
  position: absolute; left: 0; right: 0; height: 50.5%;
  background: #04060d; will-change: transform;
}
.intro-top { top: 0; animation: introTop 0.8s cubic-bezier(0.7, 0, 0.3, 1) 0.9s forwards; }
.intro-bottom { bottom: 0; animation: introBottom 0.8s cubic-bezier(0.7, 0, 0.3, 1) 0.9s forwards; }
@keyframes introTop { to { transform: translateY(-100.5%); } }
@keyframes introBottom { to { transform: translateY(100.5%); } }
.intro-beam {
  position: absolute; top: 50%; left: 8%; right: 8%; height: 2px;
  transform: translateY(-50%) scaleX(0); transform-origin: center;
  background: linear-gradient(90deg, transparent, #6ea8ff, #fff, #c58bff, transparent);
  box-shadow: 0 0 24px rgba(150, 180, 255, 0.9);
  animation: introBeamIn 0.7s var(--ease) 0.1s forwards, introFade 0.4s ease 1.05s forwards;
}
@keyframes introBeamIn { to { transform: translateY(-50%) scaleX(1); } }
.intro-logo {
  position: absolute; left: 50%; top: calc(50% - 66px); width: 74px;
  transform: translateX(-50%) scale(0.6); opacity: 0;
  filter: drop-shadow(0 0 16px rgba(139, 108, 255, 0.7));
  animation: introLogoIn 0.7s var(--ease) 0.15s forwards, introFade 0.4s ease 1.05s forwards;
}
@keyframes introLogoIn { to { transform: translateX(-50%) scale(1); opacity: 1; } }
@keyframes introFade { to { opacity: 0; } }
.intro { animation: introGone 0.01s linear 1.8s forwards; }
@keyframes introGone { to { visibility: hidden; } }
@media (prefers-reduced-motion: reduce) { .intro { display: none; } }

/* #9 光晕跟随鼠标（仅深色模式） */
.cursor-glow {
  position: fixed; top: 0; left: 0;
  width: 520px; height: 520px; border-radius: 50%;
  background: radial-gradient(circle, rgba(122, 112, 255, 0.1), transparent 62%);
  pointer-events: none; z-index: 40; mix-blend-mode: screen; will-change: transform;
}
html[data-theme="light"] .cursor-glow { display: none; }
@media (prefers-reduced-motion: reduce) { .cursor-glow { display: none; } }

/* #10 数字微光扫过 */
.stat-item .num.shine {
  background-size: 220% auto;
  animation: numShine 1.4s ease forwards;
}
@keyframes numShine {
  from { background-position: 200% center; }
  to { background-position: 0% center; }
}

/* ==========================================================
   门环主视觉 Hero（首页）
   ========================================================== */
.hero.has-portal {
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: calc(var(--header-h) + 40px) 0 90px;
}
.hero.has-portal::after { display: none; } /* 用门环自带光带，避免重复 */
.hero.has-portal .container {
  display: block;
  max-width: 940px;
  position: relative;
  z-index: 2;
}
#portal {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  display: block;
}
.hero.has-portal .hero-tag { margin-bottom: 26px; }
.hero.has-portal .hero-title {
  font-family: var(--font-display);
  font-size: clamp(34px, 6.2vw, 82px);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.5px;
  margin: 0 0 22px;
  background: none;
  color: #fff;
  -webkit-text-fill-color: #fff;
  text-shadow: 0 4px 60px rgba(20, 30, 90, 0.6);
}
.hero-title .grad {
  -webkit-text-fill-color: transparent;
}
.hero-title .line { display: block; overflow: hidden; padding: 0 2px; }
.hero-title .inner {
  display: inline-block;
  transform: translateY(112%);
  animation: heroReveal 1s var(--ease) forwards;
}
.hero-title .line:nth-child(1) .inner { animation-delay: 0.2s; }
.hero-title .line:nth-child(2) .inner { animation-delay: 0.36s; }
.hero-title .grad {
  font-style: normal;
  background: var(--grad-bright);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
@keyframes heroReveal { to { transform: translateY(0); } }
.hero.has-portal .hero-desc { margin: 0 auto 38px; }
.hero.has-portal .hero-actions { justify-content: center; }
.hero-scroll {
  position: absolute;
  left: 50%;
  bottom: 26px;
  transform: translateX(-50%);
  z-index: 2;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 3px;
  color: var(--c-text-dim);
  text-transform: uppercase;
}
.hero-scroll::after {
  content: "";
  display: block;
  width: 1px;
  height: 38px;
  margin: 12px auto 0;
  background: linear-gradient(rgba(140, 150, 255, 0.8), transparent);
  transform-origin: top;
}
@media (prefers-reduced-motion: no-preference) {
  .hero-scroll::after { animation: scrollCue 1.8s ease-in-out infinite; }
  @keyframes scrollCue {
    0%, 100% { transform: scaleY(0.3); opacity: 0.4; }
    50% { transform: scaleY(1); opacity: 1; }
  }
}
@media (prefers-reduced-motion: reduce) {
  .hero-title .inner { transform: none; animation: none; }
}
/* 数据 + 横幅段（延续深色） */
.hero-metrics { position: relative; padding-top: 84px; }
.hero-metrics .hero-stats { margin-top: 0; }

/* 从门环延伸下来的能量线（首屏→数据段过渡） */
.energy-line {
  position: absolute;
  top: -70px;
  left: 50%;
  transform: translateX(-50%);
  width: 2px;
  height: 150px;
  overflow: hidden;
  pointer-events: none;
  z-index: 3;
}
.energy-line::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(transparent, rgba(120, 130, 255, 0.35) 55%, transparent);
}
.energy-line::after {
  content: "";
  position: absolute;
  left: -1px;
  width: 4px;
  height: 30px;
  border-radius: 4px;
  background: linear-gradient(transparent, #aab8ff, transparent);
  box-shadow: 0 0 12px rgba(150, 165, 255, 0.9);
}
@media (prefers-reduced-motion: no-preference) {
  .energy-line::after { animation: energyDrop 2.6s cubic-bezier(0.5, 0, 0.5, 1) infinite; }
  @keyframes energyDrop {
    0% { top: -34px; opacity: 0; }
    20% { opacity: 1; }
    80% { opacity: 1; }
    100% { top: 150px; opacity: 0; }
  }
}
@media (prefers-reduced-motion: reduce) { .energy-line::after { top: 60px; } }

/* ==========================================================
   taste 升级：显示字体 / 噪点纹理 / 玻璃内高光 / 等宽数字
   ========================================================== */

/* 标题与数字用 Space Grotesk 显示字体（中文自动回退） */
.hero h1, .page-hero h1, .section-head h2,
.product-card h3, .alt-row h3, .about-grid h3,
.cta-banner h2, .feature-item h4, .step-item h4,
.tl-item h4, .post-card h4, .article h3, .contact-form h3,
.contact-info h3 {
  font-family: var(--font-display);
}

/* 数字统一等宽字形，避免跳动、更精密 */
.stat-item .num, .case-metric .cm-num, .step-item::before,
.section-head::before, .article .a-meta {
  font-family: var(--font-display);
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
}

/* 正文修复孤字寡行 */
p, .hero-desc, li { text-wrap: pretty; }

/* 玻璃卡片内高光边（模拟边缘折射，更真实的玻璃质感） */
.product-card, .feature-item, .scene-item, .step-item,
.post-card, .case-card, details.acc-item, .contact-form,
.wechat-card, .stat-item, .article {
  box-shadow: var(--shadow-card), inset 0 1px 0 rgba(255, 255, 255, 0.06);
}
.product-card:hover, .feature-item:hover, .scene-item:hover,
.step-item:hover, .post-card:hover, .case-card:hover,
details.acc-item:hover, details.acc-item[open] {
  box-shadow: var(--shadow-glow), inset 0 1px 0 rgba(255, 255, 255, 0.08);
}
html[data-theme="light"] .product-card,
html[data-theme="light"] .feature-item,
html[data-theme="light"] .scene-item,
html[data-theme="light"] .step-item,
html[data-theme="light"] .post-card,
html[data-theme="light"] .case-card,
html[data-theme="light"] details.acc-item,
html[data-theme="light"] .contact-form,
html[data-theme="light"] .wechat-card,
html[data-theme="light"] .stat-item,
html[data-theme="light"] .article {
  box-shadow: var(--shadow-card), inset 0 1px 0 rgba(255, 255, 255, 0.7);
}

/* 全局细颗粒噪点叠层，打破数字化死板感 */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 120;
  pointer-events: none;
  opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
html[data-theme="light"] body::after { opacity: 0.03; }
@media (prefers-reduced-motion: no-preference) {
  body::after { will-change: opacity; }
}

/* ==========================================================
   客户案例
   ========================================================== */
.case-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 26px;
}
.case-card {
  position: relative;
  border-radius: var(--radius);
  padding: 34px 32px;
  overflow: hidden;
  background:
    linear-gradient(rgba(13, 18, 38, 0.72), rgba(10, 14, 30, 0.72)) padding-box,
    var(--grad-border) border-box;
  border: 1px solid transparent;
  box-shadow: var(--shadow-card);
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease);
}
.case-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-glow);
}
.case-card::after {
  content: "";
  position: absolute;
  top: -80px;
  right: -80px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(108, 106, 255, 0.14), transparent 65%);
  pointer-events: none;
}
.case-head {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}
.case-tag {
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.5px;
  color: #fff;
  padding: 4px 14px;
  border-radius: 999px;
  background: var(--grad-main);
}
.case-product {
  font-size: 12px;
  font-family: var(--font-mono);
  color: var(--c-primary);
  border: 1px solid rgba(139, 132, 255, 0.3);
  border-radius: 999px;
  padding: 3px 12px;
}
.case-metric {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 18px;
  padding-bottom: 18px;
  border-bottom: 1px dashed rgba(148, 163, 224, 0.18);
}
.case-metric .cm-num {
  font-size: 40px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: 0.5px;
  background: var(--grad-bright);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.case-metric .cm-label { font-size: 14px; color: var(--c-text-soft); }
.case-card .case-row {
  position: relative;
  z-index: 1;
  font-size: 14.5px;
  color: var(--c-text-soft);
  margin-bottom: 9px;
  padding-left: 58px;
}
.case-card .case-row:last-child { margin-bottom: 0; }
.case-card .case-row b {
  position: absolute;
  left: 0;
  top: 0;
  color: var(--c-primary);
  font-weight: 700;
  font-size: 13px;
}
html[data-theme="light"] .case-card {
  background:
    linear-gradient(#ffffff, #fcfdff) padding-box,
    var(--grad-border) border-box;
}
html[data-theme="light"] .case-metric { border-color: rgba(90, 110, 190, 0.22); }
@media (max-width: 760px) {
  .case-grid { grid-template-columns: 1fr; }
}

/* ==========================================================
   微信二维码 / 悬浮客服
   ========================================================== */
.wechat-card {
  display: flex;
  align-items: center;
  gap: 22px;
  margin-top: 28px;
  padding: 22px;
  border-radius: var(--radius);
  background:
    linear-gradient(rgba(13, 18, 38, 0.6), rgba(10, 14, 30, 0.6)) padding-box,
    var(--grad-border) border-box;
  border: 1px solid transparent;
}
html[data-theme="light"] .wechat-card {
  background:
    linear-gradient(#ffffff, #fcfdff) padding-box,
    var(--grad-border) border-box;
}
.wechat-card img {
  width: 118px;
  height: 118px;
  border-radius: 12px;
  background: #fff;
  padding: 7px;
  flex: none;
}
.wechat-card .wc-title { font-size: 17px; font-weight: 700; color: var(--c-text); margin-bottom: 6px; }
.wechat-card .wc-desc { font-size: 13.5px; color: var(--c-text-soft); }

.fab-wechat {
  position: fixed;
  right: 26px;
  bottom: 82px;
  z-index: 90;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: none;
  cursor: pointer;
  display: grid;
  place-items: center;
  color: #fff;
  background: linear-gradient(135deg, #2fd6c3, #16b57f);
  box-shadow: 0 8px 24px rgba(22, 181, 127, 0.4);
  transition: filter 0.2s, transform 0.25s var(--ease);
}
.fab-wechat:hover { filter: brightness(1.1); transform: translateY(-2px); }
.fab-wechat .fab-pop {
  position: absolute;
  right: 58px;
  bottom: -6px;
  width: 168px;
  padding: 12px;
  border-radius: 14px;
  background: #0d1226;
  border: 1px solid var(--c-border-hi);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5);
  opacity: 0;
  visibility: hidden;
  transform: translateX(8px);
  transition: opacity 0.25s var(--ease), transform 0.25s var(--ease), visibility 0.25s;
}
.fab-wechat:hover .fab-pop,
.fab-wechat:focus-visible .fab-pop {
  opacity: 1;
  visibility: visible;
  transform: none;
}
.fab-wechat .fab-pop img {
  width: 144px;
  height: 144px;
  border-radius: 8px;
  background: #fff;
  padding: 6px;
  display: block;
}
.fab-wechat .fab-pop span {
  display: block;
  text-align: center;
  font-size: 12.5px;
  color: #c9d4f2;
  margin-top: 8px;
}

/* ==========================================================
   主题切换按钮（太阳/月亮图标，默认跟随系统）
   ========================================================== */
.theme-toggle {
  width: 38px;
  height: 38px;
  margin-left: 10px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.05);
  color: var(--c-text-soft);
  cursor: pointer;
  flex: none;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease), background 0.25s var(--ease), transform 0.25s var(--ease);
}
.theme-toggle:hover {
  color: #fff;
  border-color: rgba(157, 123, 255, 0.55);
  background: rgba(139, 92, 246, 0.12);
  transform: rotate(15deg);
}
.theme-toggle:active { transform: scale(0.9); }
.theme-toggle svg { grid-area: 1 / 1; }
/* 黑夜显示太阳（点击变白天），白天显示月亮 */
.theme-toggle .ic-moon { display: none; }
html[data-theme="light"] .theme-toggle .ic-sun { display: none; }
html[data-theme="light"] .theme-toggle .ic-moon { display: block; }
@media (prefers-reduced-motion: no-preference) {
  .theme-toggle svg { animation: themeIconIn 0.45s var(--ease); }
  @keyframes themeIconIn {
    from { transform: rotate(-100deg) scale(0.4); opacity: 0; }
    to { transform: none; opacity: 1; }
  }
}

/* ==========================================================
   白天模式（html[data-theme="light"]）
   ========================================================== */
html[data-theme="light"] {
  --c-bg: #f6f8fe;
  --c-bg-2: #edf1fb;
  --c-panel: rgba(255, 255, 255, 0.66);
  --c-text: #1b2233;
  --c-text-soft: #525d78;
  --c-text-dim: #7c86a3;
  --c-border: rgba(80, 100, 180, 0.18);
  --c-primary: #3d5eea;
  --c-violet: #7c3aed;
  --shadow-card: 0 10px 34px rgba(30, 45, 110, 0.08);
  --shadow-glow: 0 22px 54px rgba(76, 90, 255, 0.2), inset 0 0 0 1px rgba(108, 116, 255, 0.28);
  --grad-bright: linear-gradient(100deg, #2f56e8 0%, #7c3aed 60%, #a855f7 100%);
  --grad-border: linear-gradient(135deg, rgba(108, 116, 255, 0.45), rgba(139, 92, 246, 0.16) 45%, rgba(47, 214, 195, 0.14));
}
html[data-theme="light"] ::selection { background: rgba(139, 92, 246, 0.22); color: inherit; }
html[data-theme="light"] ::-webkit-scrollbar-track { background: #eef1fb; }
html[data-theme="light"] ::-webkit-scrollbar-thumb { background: #c4cde6; border-color: #eef1fb; }
html[data-theme="light"] ::-webkit-scrollbar-thumb:hover { background: #a9b5d8; }

/* 导航 */
html[data-theme="light"] .site-header { background: rgba(246, 248, 254, 0.6); }
html[data-theme="light"] .site-header.scrolled {
  background: rgba(246, 248, 254, 0.92);
  box-shadow: 0 6px 28px rgba(30, 45, 110, 0.1);
}
html[data-theme="light"] .brand { color: #1b2233; }
html[data-theme="light"] .nav-toggle span { background: #1b2233; }
html[data-theme="light"] .main-nav a { color: #525d78; }
html[data-theme="light"] .main-nav a:hover,
html[data-theme="light"] .main-nav a.active { color: #10162a; }
html[data-theme="light"] .main-nav a.nav-cta { color: #fff; }
html[data-theme="light"] .main-nav a.nav-cta:hover { color: #fff; }
html[data-theme="light"] .theme-toggle {
  border-color: rgba(27, 34, 51, 0.18);
  background: rgba(255, 255, 255, 0.6);
}
html[data-theme="light"] .theme-toggle:hover {
  color: #10162a;
  border-color: rgba(124, 58, 237, 0.45);
  background: rgba(139, 92, 246, 0.08);
}

/* Hero */
html[data-theme="light"] .hero,
html[data-theme="light"] .page-hero {
  background-color: #edf1fb;
  background-image:
    radial-gradient(closest-side, rgba(139, 92, 246, 0.16), transparent),
    radial-gradient(closest-side, rgba(60, 100, 255, 0.16), transparent),
    radial-gradient(closest-side, rgba(47, 214, 195, 0.08), transparent);
}
html[data-theme="light"] .page-hero.violet {
  background-image:
    radial-gradient(closest-side, rgba(139, 92, 246, 0.18), transparent),
    radial-gradient(closest-side, rgba(60, 100, 255, 0.14), transparent);
}
html[data-theme="light"] .hero::before,
html[data-theme="light"] .page-hero::before {
  background-image:
    linear-gradient(rgba(25, 35, 70, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(25, 35, 70, 0.05) 1px, transparent 1px);
}
html[data-theme="light"] .hero h1,
html[data-theme="light"] .page-hero h1,
html[data-theme="light"] .section-head h2 {
  background: linear-gradient(180deg, #141b30 55%, #454f6e);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
html[data-theme="light"] .hero h1 .grad {
  background: var(--grad-bright);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
html[data-theme="light"] #hero-canvas {
  filter: invert(1) hue-rotate(180deg);
  opacity: 0.3;
}
html[data-theme="light"] .hero-tag {
  color: #6d28d9;
  border-color: rgba(124, 58, 237, 0.32);
  background: rgba(139, 92, 246, 0.07);
}
html[data-theme="light"] .hero .btn-ghost,
html[data-theme="light"] .page-hero .btn-ghost {
  color: #1b2233;
  border-color: rgba(27, 34, 51, 0.22);
  background: rgba(255, 255, 255, 0.55);
}
html[data-theme="light"] .cta-banner .btn-ghost {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.28);
  background: rgba(255, 255, 255, 0.05);
}
html[data-theme="light"] .stat-item {
  background: rgba(255, 255, 255, 0.62);
  border-color: rgba(90, 110, 190, 0.2);
}
html[data-theme="light"] .stat-item:hover {
  border-color: rgba(124, 58, 237, 0.4);
  background: rgba(139, 92, 246, 0.06);
}
html[data-theme="light"] .marquee-track span {
  color: #333f5c;
  background: rgba(255, 255, 255, 0.66);
  border-color: rgba(90, 110, 190, 0.22);
}
html[data-theme="light"] .marquee-track span:hover {
  color: #10162a;
  border-color: rgba(124, 58, 237, 0.45);
  background: rgba(139, 92, 246, 0.08);
}

/* Section 与卡片 */
html[data-theme="light"] .section.soft {
  background:
    radial-gradient(760px 320px at 88% 0%, rgba(139, 92, 246, 0.06), transparent 65%),
    radial-gradient(760px 320px at 4% 100%, rgba(76, 109, 255, 0.06), transparent 65%),
    #eef2fc;
  border-color: rgba(90, 110, 190, 0.14);
}
html[data-theme="light"] .section-head::before {
  background: linear-gradient(180deg, rgba(90, 105, 255, 0.22), transparent 78%);
  -webkit-background-clip: text;
  background-clip: text;
}
html[data-theme="light"] .product-card,
html[data-theme="light"] .feature-item,
html[data-theme="light"] .scene-item,
html[data-theme="light"] .step-item,
html[data-theme="light"] .post-card,
html[data-theme="light"] details.acc-item,
html[data-theme="light"] .contact-form,
html[data-theme="light"] .alt-media {
  background:
    linear-gradient(#ffffff, #fcfdff) padding-box,
    var(--grad-border) border-box;
}
html[data-theme="light"] .article {
  background:
    linear-gradient(#ffffff, #fcfdff) padding-box,
    var(--grad-border) border-box;
}
html[data-theme="light"] .product-card h3,
html[data-theme="light"] .feature-item h4,
html[data-theme="light"] .step-item h4,
html[data-theme="light"] .scene-item h5,
html[data-theme="light"] .alt-row h3,
html[data-theme="light"] .about-grid h3,
html[data-theme="light"] .contact-info h3,
html[data-theme="light"] .contact-form h3,
html[data-theme="light"] .post-card h4,
html[data-theme="light"] .article h3,
html[data-theme="light"] .article h5,
html[data-theme="light"] .tl-item h4,
html[data-theme="light"] details.acc-item summary,
html[data-theme="light"] .acc-body h6 { color: #141b30; }
html[data-theme="light"] .article strong,
html[data-theme="light"] .about-grid strong { color: #2a3350; }
html[data-theme="light"] .product-card ul li,
html[data-theme="light"] .alt-row ul li { color: #38425e; }
html[data-theme="light"] .contact-list .c-value { color: #1f2740; }
html[data-theme="light"] .contact-list li { border-color: rgba(90, 110, 190, 0.22); }
html[data-theme="light"] .spot-overlay {
  background: radial-gradient(340px circle at var(--mx, 50%) var(--my, 50%), rgba(90, 100, 255, 0.09), transparent 65%);
}

/* 表单 */
html[data-theme="light"] .form-group label { color: #333f5c; }
html[data-theme="light"] .form-group input,
html[data-theme="light"] .form-group textarea {
  color: #1b2233;
  background: #fff;
  border-color: rgba(90, 110, 190, 0.26);
}
html[data-theme="light"] .form-group input::placeholder,
html[data-theme="light"] .form-group textarea::placeholder { color: #9aa3bd; }
html[data-theme="light"] .form-group input:focus,
html[data-theme="light"] .form-group textarea:focus {
  border-color: #7c3aed;
  box-shadow: 0 0 0 3.5px rgba(139, 92, 246, 0.14);
}
html[data-theme="light"] .form-success { color: #0c8f7f; }

/* 移动端抽屉 */
@media (max-width: 960px) {
  html[data-theme="light"] .main-nav {
    background: rgba(250, 251, 255, 0.97);
    box-shadow: -12px 0 46px rgba(30, 45, 110, 0.18);
  }
}

/* ---------- 响应式 ---------- */
@media (max-width: 960px) {
  .hero .container,
  .page-hero .container { grid-template-columns: 1fr; gap: 44px; }
  .hero-visual { max-width: 480px; margin: 0 auto; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .product-grid { grid-template-columns: 1fr; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .scene-grid { grid-template-columns: repeat(2, 1fr); }
  .alt-row { grid-template-columns: 1fr; gap: 36px; }
  .alt-row:nth-child(even) .alt-media { order: 0; }
  .about-grid,
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .post-grid { grid-template-columns: 1fr; }
  .section-head::before { font-size: 96px; top: -44px; }

  .nav-toggle { display: block; }
  .main-nav {
    position: fixed;
    top: 0;
    right: 0;
    height: 100vh;
    width: min(300px, 80vw);
    background: rgba(7, 11, 26, 0.97);
    backdrop-filter: blur(18px);
    flex-direction: column;
    align-items: flex-start;
    padding: 92px 28px 28px;
    gap: 4px;
    transform: translateX(100%);
    transition: transform 0.4s var(--ease);
    box-shadow: -12px 0 46px rgba(0, 0, 0, 0.6);
  }
  .main-nav.open { transform: none; }
  .main-nav a { width: 100%; padding: 13px 14px; font-size: 16px; }
  .main-nav a:not(.nav-cta)::after { display: none; }
  .main-nav a.nav-cta { margin: 16px 0 0; text-align: center; justify-content: center; display: flex; }

  /* 抽屉内：产品中心展开为静态列表 */
  .nav-drop { width: 100%; }
  .nav-drop-t {
    width: 100%;
    justify-content: space-between;
    padding: 13px 14px;
    font-size: 16px;
    pointer-events: none;
  }
  .nav-drop-t svg { display: none; }
  .nav-drop-menu {
    position: static;
    transform: none;
    width: 100%;
    opacity: 1;
    visibility: visible;
    padding: 0 0 0 10px;
    background: none;
    border: none;
    box-shadow: none;
    backdrop-filter: none;
  }
  .nav-drop-menu::before { display: none; }
  .nav-drop-menu a { padding: 10px 14px; }
  .nav-drop-menu a b { font-size: 15px; }
  .nav-drop-menu a span { display: none; }
  html[data-theme="light"] .nav-drop-menu { background: none; box-shadow: none; }
}

@media (max-width: 560px) {
  .section { padding: 72px 0; }
  .feature-grid,
  .steps,
  .scene-grid,
  .value-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero { padding-bottom: 74px; }
  .hero-stats { margin-top: 60px; }
  .cta-banner { padding: 52px 26px; }
  .contact-form { padding: 26px 20px; }
  details.acc-item summary { font-size: 15px; padding: 17px 18px; }
  .acc-body { padding: 2px 18px 20px; }
  .tl-item { padding-left: 56px; }
  .article { padding: 28px 22px; }
  .section-head::before { font-size: 72px; top: -34px; }
}