/* ============================================================
   智影科技官网 · 纯净态静态站样式
   深空科技风 / 玻璃态 / 辉光 / 线性图标
   设计规范详见 DESIGN_SYSTEM.md
   ============================================================ */

/* ---------- 字体（本地 woff2，无网络时回退系统字体） ---------- */
@font-face {
  font-family: 'Inter';
  src: url('../fonts/inter-400.woff2') format('woff2');
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Space Grotesk';
  src: url('../fonts/space-grotesk-500.woff2') format('woff2');
  font-weight: 300 700;
  font-style: normal;
  font-display: swap;
}

/* ---------- 设计令牌 ---------- */
:root {
  --bg: #05060f;
  --bg-2: #0a0d1f;
  --surface: rgba(255, 255, 255, 0.03);
  --line: rgba(255, 255, 255, 0.09);
  --text: #eef2ff;
  --text-2: #a5b0cf;
  --text-3: #6b7594;
  --cyan: #22d3ee;
  --indigo: #6366f1;
  --violet: #a855f7;
  --grad: linear-gradient(120deg, #22d3ee, #6366f1 55%, #a855f7);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --font-body: 'Inter', 'PingFang SC', 'HarmonyOS Sans SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
  --font-display: 'Space Grotesk', 'PingFang SC', 'HarmonyOS Sans SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
}

/* ---------- 基础 ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 96px; }
body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 700; line-height: 1.25; }
img { max-width: 100%; display: block; }
a { color: inherit; }
ul, ol { list-style: none; }
button { font-family: inherit; }
::selection { background: rgba(34, 211, 238, 0.32); color: #fff; }
::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: rgba(99, 102, 241, 0.35); border-radius: 8px; }
::-webkit-scrollbar-thumb:hover { background: rgba(99, 102, 241, 0.55); }
:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; border-radius: 4px; }

.container { width: min(1200px, 100% - 48px); margin-inline: auto; }
.section { padding: 120px 0; position: relative; }
.icon { width: 20px; height: 20px; flex: none; }

/* 跳转主内容（可访问性） */
.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 10001;
  background: var(--cyan); color: #03121a; padding: 10px 18px;
  font-weight: 600; border-radius: 0 0 12px 0; text-decoration: none;
}
.skip-link:focus { left: 0; }

/* ---------- 全局装饰层 ---------- */
.bg-deco { position: fixed; inset: 0; z-index: -1; overflow: hidden; pointer-events: none; }
.aurora { position: absolute; border-radius: 50%; filter: blur(90px); will-change: transform; }
.a1 { width: 60vw; height: 60vw; left: -15%; top: -22%; background: radial-gradient(circle, rgba(34, 211, 238, 0.15), transparent 60%); animation: drift1 26s ease-in-out infinite alternate; }
.a2 { width: 55vw; height: 55vw; right: -12%; top: 6%; background: radial-gradient(circle, rgba(99, 102, 241, 0.16), transparent 60%); animation: drift2 32s ease-in-out infinite alternate; }
.a3 { width: 52vw; height: 52vw; left: 22%; bottom: -20%; background: radial-gradient(circle, rgba(168, 85, 247, 0.12), transparent 60%); animation: drift3 38s ease-in-out infinite alternate; }
@keyframes drift1 { to { transform: translate(8vw, 6vh) scale(1.12); } }
@keyframes drift2 { to { transform: translate(-7vw, 10vh) scale(0.94); } }
@keyframes drift3 { to { transform: translate(6vw, -8vh) scale(1.08); } }
.grid-overlay {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(148, 163, 184, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, 0.05) 1px, transparent 1px);
  background-size: 44px 44px;
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, #000 25%, transparent 78%);
  mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, #000 25%, transparent 78%);
}
.noise {
  position: absolute; inset: 0; opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)' opacity='0.7'/%3E%3C/svg%3E");
}

/* ---------- 预加载屏 ---------- */
.preloader {
  position: fixed; inset: 0; z-index: 10000; background: var(--bg);
  display: grid; place-items: center;
  transition: opacity 0.6s var(--ease), visibility 0.6s;
}
.preloader.done { opacity: 0; visibility: hidden; }
.pl-inner { display: flex; flex-direction: column; align-items: center; gap: 24px; }
.pl-logo svg { width: 64px; height: 64px; animation: plPulse 1.6s ease-in-out infinite; }
@keyframes plPulse { 50% { transform: scale(1.08); filter: drop-shadow(0 0 18px rgba(34, 211, 238, 0.55)); } }
.pl-bar { width: 220px; height: 2px; background: rgba(255, 255, 255, 0.1); border-radius: 2px; overflow: hidden; }
.pl-bar span { display: block; height: 100%; width: 0; background: var(--grad); transition: width 0.2s linear; }
.pl-pct { font-family: var(--font-display); color: var(--text-3); font-size: 0.8rem; letter-spacing: 0.12em; }

/* ---------- 顶部进度条 / 自定义光标 / 返回顶部 ---------- */
.progress { position: fixed; top: 0; left: 0; right: 0; height: 2px; z-index: 1001; pointer-events: none; }
.progress span { display: block; height: 100%; width: 0; background: linear-gradient(90deg, #22d3ee, #a855f7); box-shadow: 0 0 12px rgba(34, 211, 238, 0.6); }
.cursor-dot, .cursor-ring { position: fixed; top: 0; left: 0; pointer-events: none; transform: translate(-50%, -50%); z-index: 9999; }
.cursor-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 12px rgba(34, 211, 238, 0.8); }
.cursor-ring { width: 34px; height: 34px; border-radius: 50%; border: 1px solid rgba(34, 211, 238, 0.5); transition: width 0.25s var(--ease), height 0.25s var(--ease), border-color 0.25s; z-index: 9998; }
body.cursor-hover .cursor-ring { width: 54px; height: 54px; border-color: rgba(168, 85, 247, 0.75); }
@media (hover: none), (pointer: coarse) { .cursor-dot, .cursor-ring { display: none; } }
.back-top {
  position: fixed; right: 26px; bottom: 26px; width: 46px; height: 46px;
  border-radius: 14px; background: rgba(10, 13, 31, 0.82); border: 1px solid var(--line);
  color: var(--text-2); display: grid; place-items: center; cursor: pointer;
  opacity: 0; visibility: hidden; transform: translateY(12px);
  transition: opacity 0.35s, visibility 0.35s, transform 0.35s var(--ease), color 0.25s, border-color 0.25s;
  z-index: 900; backdrop-filter: blur(10px);
}
.back-top.show { opacity: 1; visibility: visible; transform: none; }
.back-top:hover { color: var(--cyan); border-color: rgba(34, 211, 238, 0.5); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 24px; border-radius: 999px; font-weight: 600; font-size: 0.95rem;
  border: 1px solid transparent; cursor: pointer; position: relative; overflow: hidden;
  text-decoration: none; line-height: 1; white-space: nowrap;
  transition: transform 0.3s var(--ease), box-shadow 0.25s, background 0.25s, border-color 0.25s, color 0.25s;
}
.btn-primary { background: var(--grad); color: #fff; box-shadow: 0 8px 30px rgba(56, 189, 248, 0.26); }
.btn-primary::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(120deg, transparent 30%, rgba(255, 255, 255, 0.35) 50%, transparent 70%);
  transform: translateX(-120%); transition: transform 0.6s var(--ease);
}
.btn-primary:hover { box-shadow: 0 12px 44px rgba(99, 102, 241, 0.45); }
.btn-primary:hover::before { transform: translateX(120%); }
.btn-ghost { background: rgba(255, 255, 255, 0.04); border-color: var(--line); color: var(--text); backdrop-filter: blur(8px); }
.btn-ghost:hover { border-color: rgba(34, 211, 238, 0.5); background: rgba(34, 211, 238, 0.08); }
.btn-sm { padding: 9px 17px; font-size: 0.86rem; }
.btn-lg { padding: 15px 30px; font-size: 1rem; }
.btn-arrow { transition: transform 0.25s var(--ease); }
.btn:hover .btn-arrow { transform: translateX(3px); }

/* ---------- 头部导航 ---------- */
.site-header { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; transition: background 0.35s, border-color 0.35s, backdrop-filter 0.35s; border-bottom: 1px solid transparent; }
.site-header.scrolled { background: rgba(5, 6, 15, 0.72); backdrop-filter: blur(16px); border-bottom-color: var(--line); }
.nav-wrap { display: flex; align-items: center; justify-content: space-between; height: 76px; gap: 20px; }
.brand { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; }
.brand-mark svg { width: 38px; height: 38px; display: block; }
.brand-name b { font-family: var(--font-display); font-size: 1.05rem; letter-spacing: 0.02em; display: block; line-height: 1.15; color: var(--text); }
.brand-name i { font-style: normal; font-size: 0.66rem; color: var(--text-3); letter-spacing: 0.16em; text-transform: uppercase; }
.nav-links { display: flex; gap: 4px; }
.nl-item { padding: 9px 15px; border-radius: 999px; color: var(--text-2); font-size: 0.92rem; text-decoration: none; transition: color 0.25s, background 0.25s; position: relative; }
.nl-item:hover { color: var(--text); background: rgba(255, 255, 255, 0.05); }
.nl-item.active { color: var(--text); }
.nl-item.active::after { content: ''; position: absolute; left: 15px; right: 15px; bottom: 3px; height: 2px; background: var(--grad); border-radius: 2px; }
.nav-actions { display: flex; align-items: center; gap: 12px; }
.lang-switch { position: relative; }
.ls-btn {
  display: flex; align-items: center; gap: 7px; padding: 8px 13px; border-radius: 999px;
  background: rgba(255, 255, 255, 0.04); border: 1px solid var(--line); color: var(--text-2);
  font-size: 0.84rem; cursor: pointer; transition: color 0.25s, border-color 0.25s;
}
.ls-btn:hover { color: var(--text); border-color: rgba(34, 211, 238, 0.4); }
.ls-btn .icon { width: 16px; height: 16px; }
.ls-caret { width: 14px; height: 14px; transition: transform 0.25s; }
.lang-switch.open .ls-caret { transform: rotate(180deg); }
.ls-menu {
  position: absolute; top: calc(100% + 10px); right: 0; min-width: 156px;
  background: rgba(10, 13, 31, 0.96); border: 1px solid var(--line); border-radius: 14px;
  padding: 8px; display: flex; flex-direction: column; gap: 2px;
  opacity: 0; visibility: hidden; transform: translateY(6px);
  transition: opacity 0.25s, visibility 0.25s, transform 0.25s var(--ease);
  backdrop-filter: blur(16px); box-shadow: 0 20px 50px rgba(2, 6, 23, 0.6); z-index: 1001;
}
.lang-switch.open .ls-menu { opacity: 1; visibility: visible; transform: none; }
.ls-item { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 9px 12px; border-radius: 9px; color: var(--text-2); font-size: 0.86rem; text-decoration: none; transition: background 0.2s, color 0.2s; }
.ls-item:hover { background: rgba(255, 255, 255, 0.06); color: var(--text); }
.ls-item.active { color: var(--cyan); }
.ls-check { width: 15px; height: 15px; }
.nav-toggle { display: none; width: 42px; height: 42px; border-radius: 12px; background: rgba(255, 255, 255, 0.04); border: 1px solid var(--line); color: var(--text); place-items: center; cursor: pointer; }
.nav-toggle .icon { width: 22px; height: 22px; }
.mobile-menu {
  position: fixed; top: 76px; left: 0; right: 0; z-index: 990;
  background: rgba(5, 6, 15, 0.97); backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--line); padding: 16px 24px 26px;
  display: flex; flex-direction: column;
  opacity: 0; visibility: hidden; transform: translateY(-8px);
  transition: opacity 0.3s, visibility 0.3s, transform 0.3s var(--ease);
}
.mobile-menu.open { opacity: 1; visibility: visible; transform: none; }
.mm-link { padding: 15px 6px; color: var(--text-2); text-decoration: none; font-size: 1rem; border-bottom: 1px solid rgba(255, 255, 255, 0.05); display: flex; justify-content: space-between; align-items: center; }
.mm-link.active { color: var(--cyan); }
.mm-arrow { width: 16px; height: 16px; opacity: 0.5; }
.mm-lang-row { display: flex; gap: 10px; margin: 18px 0 8px; }
.mm-lang { padding: 8px 15px; border-radius: 999px; border: 1px solid var(--line); color: var(--text-2); font-size: 0.84rem; text-decoration: none; }
.mm-lang.active { color: var(--cyan); border-color: rgba(34, 211, 238, 0.5); }
.mm-cta { margin-top: 10px; }

/* ---------- 首页 Hero ---------- */
.hero { position: relative; min-height: 100svh; display: flex; align-items: center; padding: 150px 0 90px; overflow: hidden; }
.particles { position: absolute; inset: 0; width: 100%; height: 100%; z-index: 0; }
.particles-mini { opacity: 0.55; }
.hero-inner { position: relative; z-index: 1; display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 64px; align-items: center; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 10px; padding: 8px 17px; border-radius: 999px;
  background: rgba(34, 211, 238, 0.07); border: 1px solid rgba(34, 211, 238, 0.25);
  color: #a5f3fc; font-size: 0.82rem; letter-spacing: 0.04em;
}
.pulse-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--cyan); animation: pulse 2s infinite; }
@keyframes pulse { 0% { box-shadow: 0 0 0 0 rgba(34, 211, 238, 0.55); } 70% { box-shadow: 0 0 0 10px rgba(34, 211, 238, 0); } 100% { box-shadow: 0 0 0 0 rgba(34, 211, 238, 0); } }
.hero-title { font-size: clamp(2.4rem, 4.6vw, 4rem); line-height: 1.12; letter-spacing: -0.02em; margin: 28px 0 20px; }
.grad-text { background: linear-gradient(120deg, #22d3ee, #818cf8 50%, #c084fc); -webkit-background-clip: text; background-clip: text; color: transparent; }
.rotator-line { font-family: var(--font-display); font-size: clamp(1.1rem, 1.8vw, 1.45rem); display: flex; align-items: center; gap: 10px; min-height: 1.7em; margin-bottom: 20px; flex-wrap: wrap; }
.rotator-prefix { color: var(--text-3); font-size: 0.85em; }
.rotator { color: #67e8f9; font-weight: 600; }
.rotator-caret { width: 2px; height: 1.05em; background: var(--cyan); animation: blink 1s steps(2) infinite; }
@keyframes blink { 50% { opacity: 0; } }
.hero-sub { color: var(--text-2); font-size: 1.05rem; line-height: 1.9; max-width: 56ch; margin-bottom: 36px; }
.hero-cta { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 52px; }
.hero-stats { display: grid; grid-template-columns: repeat(4, auto); gap: 40px; }
.hs-v { font-family: var(--font-display); font-size: 1.9rem; font-weight: 700; color: var(--text); display: block; line-height: 1; }
.hs-v i { font-style: normal; font-size: 0.55em; color: var(--cyan); margin-left: 2px; }
.hs-l { font-size: 0.78rem; color: var(--text-3); margin-top: 8px; display: block; line-height: 1.5; }
.hero-visual { position: relative; }
.hero-frame { position: relative; border-radius: 28px; overflow: hidden; box-shadow: 0 0 90px rgba(34, 211, 238, 0.14), 0 30px 80px rgba(2, 6, 23, 0.55); }
.hero-frame img { width: 100%; aspect-ratio: 4 / 4.4; object-fit: cover; }
.hero-frame-border { position: absolute; inset: 0; border-radius: 28px; border: 1px solid rgba(255, 255, 255, 0.14); pointer-events: none; background: linear-gradient(180deg, transparent 55%, rgba(5, 6, 15, 0.4)); }
.hero-ring { position: absolute; width: 118%; aspect-ratio: 1; left: 50%; top: 50%; transform: translate(-50%, -50%); border-radius: 50%; border: 1px dashed rgba(99, 102, 241, 0.32); animation: spin 50s linear infinite; }
@keyframes spin { to { transform: translate(-50%, -50%) rotate(360deg); } }
.float-chip {
  position: absolute; display: flex; align-items: center; gap: 9px; padding: 11px 17px;
  border-radius: 14px; background: rgba(10, 13, 31, 0.82); border: 1px solid var(--line);
  backdrop-filter: blur(10px); font-size: 0.82rem; color: var(--text);
  box-shadow: 0 10px 40px rgba(2, 6, 23, 0.6); animation: floaty 5s ease-in-out infinite;
}
.float-chip .icon { width: 17px; height: 17px; color: var(--cyan); }
.chip-a { top: 7%; left: -7%; }
.chip-b { bottom: 9%; right: -5%; animation-delay: 2.5s; }
@keyframes floaty { 50% { transform: translateY(-12px); } }
.scroll-hint { position: absolute; left: 50%; bottom: 26px; transform: translateX(-50%); display: flex; flex-direction: column; align-items: center; gap: 6px; color: var(--text-3); font-size: 0.74rem; text-decoration: none; letter-spacing: 0.1em; z-index: 1; }
.scroll-hint .icon { width: 16px; height: 16px; animation: bob 1.8s ease-in-out infinite; }
@keyframes bob { 50% { transform: translateY(5px); } }

/* ---------- 合作伙伴跑马灯 ---------- */
.partners { padding: 76px 0 8px; }
.partners-title { text-align: center; color: var(--text-2); font-size: 0.95rem; display: flex; gap: 12px; justify-content: center; align-items: center; flex-wrap: wrap; }
.partners-title i { font-style: normal; font-size: 0.7rem; color: var(--text-3); border: 1px solid var(--line); padding: 2px 9px; border-radius: 999px; }
.marquee { overflow: hidden; margin-top: 34px; -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent); mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent); }
.marquee-track { display: flex; gap: 58px; width: max-content; animation: marquee 34s linear infinite; }
.marquee:hover .marquee-track { animation-play-state: paused; }
.marquee-item { font-family: var(--font-display); font-size: 1.12rem; color: var(--text-3); white-space: nowrap; letter-spacing: 0.05em; transition: color 0.3s; }
.marquee:hover .marquee-item { color: var(--text-2); }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- 区块通用 ---------- */
.section-head { max-width: 720px; margin-bottom: 64px; }
.sh-label { color: var(--cyan); font-size: 0.76rem; letter-spacing: 0.22em; margin-bottom: 16px; text-transform: uppercase; font-weight: 600; }
.sh-title { font-size: clamp(1.7rem, 3vw, 2.4rem); line-height: 1.28; margin-bottom: 16px; letter-spacing: -0.01em; }
.sh-sub { color: var(--text-2); line-height: 1.9; }
.section-more { text-align: center; margin-top: 60px; }

/* ---------- 核心能力卡片 ---------- */
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.feature-card { position: relative; padding: 36px 30px; border-radius: 20px; background: var(--surface); border: 1px solid var(--line); overflow: hidden; transition: border-color 0.35s, box-shadow 0.35s, background 0.35s; }
.feature-card:hover { border-color: rgba(34, 211, 238, 0.35); box-shadow: 0 24px 60px rgba(2, 6, 23, 0.5); background: rgba(255, 255, 255, 0.045); }
.fc-icon { width: 54px; height: 54px; border-radius: 15px; display: grid; place-items: center; background: linear-gradient(135deg, rgba(34, 211, 238, 0.16), rgba(99, 102, 241, 0.16)); border: 1px solid rgba(34, 211, 238, 0.25); color: var(--cyan); margin-bottom: 22px; }
.fc-icon .icon { width: 26px; height: 26px; }
.fc-title { font-size: 1.12rem; margin-bottom: 10px; }
.fc-desc { color: var(--text-2); font-size: 0.92rem; line-height: 1.78; }
.fc-glow { position: absolute; width: 240px; height: 240px; border-radius: 50%; background: radial-gradient(circle, rgba(34, 211, 238, 0.13), transparent 65%); left: var(--mx, 50%); top: var(--my, 50%); transform: translate(-50%, -50%); opacity: 0; transition: opacity 0.3s; pointer-events: none; }
.feature-card:hover .fc-glow { opacity: 1; }

/* ---------- 产品图文行 ---------- */
.prod-row { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; padding: 72px 0; border-bottom: 1px solid var(--line); }
.prod-row.rev .prod-media { order: 2; }
.prod-img-frame { border-radius: 22px; overflow: hidden; position: relative; box-shadow: 0 30px 80px rgba(2, 6, 23, 0.55); }
.prod-img-frame img { width: 100%; aspect-ratio: 16 / 11; object-fit: cover; }
.prod-img-frame::after { content: ''; position: absolute; inset: 0; border-radius: 22px; border: 1px solid rgba(255, 255, 255, 0.12); background: linear-gradient(180deg, transparent 62%, rgba(5, 6, 15, 0.32)); pointer-events: none; }
.prod-tag { display: inline-block; padding: 6px 15px; border-radius: 999px; background: rgba(99, 102, 241, 0.12); border: 1px solid rgba(99, 102, 241, 0.3); color: #c7d2fe; font-size: 0.74rem; letter-spacing: 0.1em; margin-bottom: 18px; }
.prod-title { font-size: clamp(1.5rem, 2.6vw, 2.1rem); margin-bottom: 18px; line-height: 1.3; }
.prod-desc { color: var(--text-2); line-height: 1.9; margin-bottom: 26px; }
.prod-points { display: grid; grid-template-columns: 1fr 1fr; gap: 13px 22px; margin-bottom: 30px; }
.pp-item { display: flex; gap: 10px; align-items: flex-start; color: var(--text); font-size: 0.9rem; line-height: 1.55; }
.pp-item .icon { color: var(--cyan); width: 18px; height: 18px; margin-top: 3px; }
.prod-link { display: inline-flex; align-items: center; gap: 8px; color: var(--cyan); font-weight: 600; font-size: 0.92rem; text-decoration: none; }
.prod-link:hover { text-decoration: underline; }
.prod-link .icon { width: 16px; height: 16px; }

/* ---------- 数据带 ---------- */
.stats-band { padding: 96px 0; background: linear-gradient(180deg, transparent, rgba(99, 102, 241, 0.05), transparent); border-block: 1px solid var(--line); }
.sb-head { text-align: center; margin-inline: auto; margin-bottom: 52px; }
.sb-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.stat { text-align: center; padding: 30px 12px; border-radius: 20px; transition: background 0.3s; }
.stat:hover { background: rgba(255, 255, 255, 0.02); }
.stat-v { font-family: var(--font-display); font-size: clamp(2.2rem, 3.4vw, 3.2rem); font-weight: 700; line-height: 1; }
.stat-v i { font-style: normal; color: var(--cyan); font-size: 0.48em; }
.stat-l { display: block; color: var(--text-3); font-size: 0.86rem; margin-top: 10px; }

/* ---------- 解决方案卡片（首页） ---------- */
.sol-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.sol-card { border-radius: 20px; overflow: hidden; background: var(--surface); border: 1px solid var(--line); text-decoration: none; color: inherit; display: flex; flex-direction: column; transition: transform 0.35s var(--ease), border-color 0.35s, box-shadow 0.35s; }
.sol-card:hover { border-color: rgba(34, 211, 238, 0.35); box-shadow: 0 24px 60px rgba(2, 6, 23, 0.5); }
.sol-img { display: block; aspect-ratio: 16 / 10; overflow: hidden; }
.sol-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s var(--ease); filter: saturate(0.92) brightness(0.94); }
.sol-card:hover .sol-img img { transform: scale(1.07); }
.sol-body { padding: 22px; display: flex; flex-direction: column; gap: 9px; flex: 1; }
.sol-title { font-family: var(--font-display); font-size: 1.04rem; }
.sol-desc { color: var(--text-2); font-size: 0.85rem; line-height: 1.72; flex: 1; }
.sol-more { color: var(--cyan); font-size: 0.8rem; display: inline-flex; align-items: center; gap: 6px; }
.sol-more .icon { width: 14px; height: 14px; }

/* ---------- 交付流程 ---------- */
.section-how { background: linear-gradient(180deg, transparent, rgba(34, 211, 238, 0.03), transparent); }
.how-grid { position: relative; display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; margin-top: 72px; }
.how-line { position: absolute; top: 22px; left: 7%; right: 7%; height: 1px; background: linear-gradient(90deg, transparent, rgba(34, 211, 238, 0.55), rgba(168, 85, 247, 0.55), transparent); }
.how-step { position: relative; padding: 0 10px; }
.hs-n { font-family: var(--font-display); font-size: 2.5rem; font-weight: 700; background: linear-gradient(120deg, #22d3ee, #a855f7); -webkit-background-clip: text; background-clip: text; color: transparent; display: block; margin-bottom: 20px; line-height: 1; }
.hs-title { font-size: 1.08rem; margin-bottom: 10px; }
.hs-desc { color: var(--text-2); font-size: 0.89rem; line-height: 1.78; }

/* ---------- 客户声音 ---------- */
.tst-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.tst-card { padding: 34px 30px; border-radius: 20px; background: var(--surface); border: 1px solid var(--line); position: relative; transition: border-color 0.35s, box-shadow 0.35s; }
.tst-card:hover { border-color: rgba(99, 102, 241, 0.35); box-shadow: 0 24px 60px rgba(2, 6, 23, 0.45); }
.tst-quote { width: 34px; height: 34px; color: rgba(99, 102, 241, 0.65); margin-bottom: 18px; }
.tst-text { color: var(--text); font-size: 0.95rem; line-height: 1.9; margin: 0 0 24px; }
.tst-meta { display: flex; flex-direction: column; gap: 3px; }
.tst-name { font-size: 0.9rem; }
.tst-role { color: var(--text-3); font-size: 0.77rem; }

/* ---------- CTA 带 ---------- */
.cta-band { padding: 40px 0 130px; }
.cta-inner {
  position: relative; text-align: center; padding: 84px 40px; border-radius: 28px; overflow: hidden;
  background: radial-gradient(120% 140% at 50% 0%, rgba(99, 102, 241, 0.17), rgba(5, 6, 15, 0.4) 55%), var(--bg-2);
  border: 1px solid transparent;
  background-clip: padding-box;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.04);
}
.cta-inner::before { content: ''; position: absolute; inset: 0; border-radius: 28px; padding: 1px; background: linear-gradient(120deg, rgba(34, 211, 238, 0.5), rgba(99, 102, 241, 0.3), rgba(168, 85, 247, 0.5)); -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor; mask-composite: exclude; pointer-events: none; }
.cta-glow { position: absolute; width: 540px; height: 540px; border-radius: 50%; background: radial-gradient(circle, rgba(34, 211, 238, 0.16), transparent 60%); left: 50%; top: -45%; transform: translateX(-50%); pointer-events: none; }
.cta-title { font-size: clamp(1.8rem, 3.4vw, 2.6rem); margin-bottom: 16px; position: relative; }
.cta-sub { color: var(--text-2); max-width: 52ch; margin: 0 auto 36px; position: relative; line-height: 1.85; }
.cta-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; position: relative; }

/* ---------- 子页 Hero ---------- */
.page-hero { position: relative; padding: 200px 0 90px; overflow: hidden; }
.ph-label { color: var(--cyan); font-size: 0.78rem; letter-spacing: 0.24em; margin-bottom: 18px; text-transform: uppercase; font-weight: 600; }
.ph-title { font-size: clamp(2.2rem, 4.4vw, 3.4rem); line-height: 1.14; letter-spacing: -0.02em; max-width: 22ch; }
.ph-sub { color: var(--text-2); font-size: 1.02rem; line-height: 1.9; max-width: 64ch; margin-top: 22px; }

/* ---------- 行业方案块 ---------- */
.sol-block { display: grid; grid-template-columns: 1fr 1.12fr; gap: 60px; align-items: center; padding: 74px 0; border-bottom: 1px solid var(--line); }
.sol-block.rev .sol-media { order: 2; }
.sol-industry { color: var(--cyan); font-size: 0.78rem; letter-spacing: 0.2em; margin-bottom: 14px; font-weight: 600; }
.sol-block-title { font-size: clamp(1.4rem, 2.4vw, 1.9rem); line-height: 1.35; margin-bottom: 16px; }
.sol-block-desc { color: var(--text-2); line-height: 1.9; margin-bottom: 28px; }
.sol-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-bottom: 28px; }
.sol-col { padding: 20px; border-radius: 16px; background: var(--surface); border: 1px solid var(--line); }
.sol-col h3 { font-size: 0.78rem; letter-spacing: 0.14em; color: var(--text-3); margin-bottom: 14px; font-weight: 600; font-family: var(--font-body); }
.sol-col ul { display: flex; flex-direction: column; gap: 10px; }
.sol-col li { display: flex; gap: 10px; font-size: 0.85rem; color: var(--text-2); line-height: 1.62; }
.sol-col li .icon { width: 16px; height: 16px; flex: none; margin-top: 3px; }
.sol-pains li .icon { color: #f87171; }
.sol-gains li .icon { color: #34d399; }
.sol-metrics { display: flex; gap: 14px; flex-wrap: wrap; }
.sol-metric { padding: 14px 20px; border-radius: 14px; background: rgba(34, 211, 238, 0.06); border: 1px solid rgba(34, 211, 238, 0.22); }
.sol-metric b { font-family: var(--font-display); font-size: 1.12rem; color: #67e8f9; display: block; line-height: 1.2; }
.sol-metric span { font-size: 0.73rem; color: var(--text-3); }
.sol-note { color: var(--text-3); font-size: 0.82rem; display: flex; gap: 9px; align-items: center; margin-top: 44px; justify-content: center; }
.sol-note .icon { width: 15px; height: 15px; }

/* ---------- 关于我们 ---------- */
.about-intro { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 64px; align-items: center; }
.ai-text p { color: var(--text-2); font-size: 1.02rem; line-height: 1.95; margin-bottom: 20px; }
.ai-text p:first-child { color: var(--text); }
.values-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.val-card { padding: 32px 28px; border-radius: 20px; background: var(--surface); border: 1px solid var(--line); transition: border-color 0.35s, box-shadow 0.35s; }
.val-card:hover { border-color: rgba(34, 211, 238, 0.35); box-shadow: 0 24px 60px rgba(2, 6, 23, 0.45); }
.val-icon { color: var(--cyan); display: block; margin-bottom: 18px; }
.val-icon .icon { width: 28px; height: 28px; }
.val-title { font-size: 1.02rem; margin-bottom: 10px; }
.val-desc { color: var(--text-2); font-size: 0.87rem; line-height: 1.78; }
.timeline { position: relative; margin-top: 64px; padding-left: 36px; }
.tl-line { position: absolute; left: 8px; top: 10px; bottom: 10px; width: 1px; background: linear-gradient(180deg, rgba(34, 211, 238, 0.6), rgba(168, 85, 247, 0.4), transparent); }
.tl-item { position: relative; padding: 0 0 44px 26px; }
.tl-item::before { content: ''; position: absolute; left: -34px; top: 6px; width: 11px; height: 11px; border-radius: 50%; background: var(--bg); border: 2px solid var(--cyan); box-shadow: 0 0 14px rgba(34, 211, 238, 0.6); }
.tl-year { font-family: var(--font-display); color: var(--cyan); font-size: 0.95rem; letter-spacing: 0.08em; }
.tl-title { font-size: 1.05rem; margin: 6px 0 8px; }
.tl-desc { color: var(--text-2); font-size: 0.89rem; line-height: 1.72; }

/* ---------- 联系我们 ---------- */
.cc-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.cc-card { padding: 30px 26px; border-radius: 20px; background: var(--surface); border: 1px solid var(--line); transition: border-color 0.35s; }
.cc-card:hover { border-color: rgba(34, 211, 238, 0.3); }
.cc-icon { color: var(--cyan); display: block; margin-bottom: 16px; }
.cc-icon .icon { width: 24px; height: 24px; }
.cc-label { color: var(--text-3); font-size: 0.75rem; letter-spacing: 0.12em; margin-bottom: 8px; }
.cc-value { color: var(--text); font-size: 0.94rem; line-height: 1.62; text-decoration: none; display: block; }
a.cc-value:hover { color: var(--cyan); }
.cf-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 60px; align-items: start; }
.cf-title { font-size: 1.5rem; margin-bottom: 28px; }
.contact-form { display: flex; flex-direction: column; gap: 18px; }
.cf-fields { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.cf-field { display: flex; flex-direction: column; gap: 8px; }
.cf-field label { font-size: 0.83rem; color: var(--text-2); }
.cf-field label i { font-style: normal; color: var(--cyan); margin-left: 2px; }
.cf-field input, .cf-field textarea { background: rgba(255, 255, 255, 0.04); border: 1px solid var(--line); border-radius: 12px; padding: 13px 16px; color: var(--text); font-size: 0.95rem; font-family: inherit; transition: border-color 0.25s, box-shadow 0.25s; resize: vertical; width: 100%; }
.cf-field input:focus, .cf-field textarea:focus { outline: none; border-color: rgba(34, 211, 238, 0.55); box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.12); }
.cf-field input::placeholder, .cf-field textarea::placeholder { color: var(--text-3); }
.cf-msg { min-height: 1.5em; font-size: 0.9rem; }
.cf-msg.ok { color: #34d399; }
.cf-msg.err { color: #f87171; }
.cf-note { color: var(--text-3); font-size: 0.79rem; display: flex; gap: 8px; align-items: center; }
.cf-note .icon { width: 14px; height: 14px; }
#cfSubmit { align-self: flex-start; }
.cf-faq-title { font-size: 1.5rem; margin: 12px 0 24px; }
.faq-list { display: flex; flex-direction: column; gap: 12px; }
.faq-item { border: 1px solid var(--line); border-radius: 16px; background: var(--surface); overflow: hidden; transition: border-color 0.3s; }
.faq-item.open { border-color: rgba(34, 211, 238, 0.3); }
.faq-q { width: 100%; display: flex; justify-content: space-between; align-items: center; gap: 16px; padding: 18px 20px; background: none; border: none; color: var(--text); font-size: 0.94rem; font-weight: 600; cursor: pointer; text-align: left; }
.faq-caret { color: var(--text-3); transition: transform 0.3s; flex: none; width: 17px; height: 17px; }
.faq-item.open .faq-caret { transform: rotate(180deg); color: var(--cyan); }
.faq-a { padding: 0 20px 18px; color: var(--text-2); font-size: 0.89rem; line-height: 1.82; }
.faq-a p { margin: 0; }

/* ---------- 法律文档页 ---------- */
.doc { max-width: 780px; }
.doc-updated { color: var(--text-3); font-size: 0.82rem; display: flex; gap: 8px; align-items: center; margin-bottom: 38px; }
.doc-updated .icon { width: 14px; height: 14px; }
.doc-sec { margin-bottom: 44px; }
.doc-h { font-size: 1.14rem; margin-bottom: 14px; }
.doc-p { color: var(--text-2); line-height: 1.95; margin-bottom: 12px; font-size: 0.93rem; }

/* ---------- 404 ---------- */
.nf-wrap { min-height: 100svh; display: grid; place-items: center; text-align: center; padding: 150px 0 90px; position: relative; overflow: hidden; }
.nf-code { font-family: var(--font-display); font-size: clamp(6rem, 18vw, 12rem); font-weight: 700; line-height: 1; margin: 0; position: relative; color: var(--text); }
.glitch::before, .glitch::after { content: attr(data-text); position: absolute; inset: 0; overflow: hidden; }
.glitch::before { color: var(--cyan); clip-path: inset(0 0 55% 0); animation: glitchA 2.4s infinite linear alternate-reverse; }
.glitch::after { color: var(--violet); clip-path: inset(55% 0 0 0); animation: glitchB 3.1s infinite linear alternate-reverse; }
@keyframes glitchA { 0%, 100% { transform: none; } 20% { transform: translate(-5px, 2px); } 40% { transform: translate(5px, -2px); } 60% { transform: translate(-3px, -1px); } 80% { transform: translate(3px, 1px); } }
@keyframes glitchB { 0%, 100% { transform: none; } 25% { transform: translate(4px, -1px); } 50% { transform: translate(-4px, 2px); } 75% { transform: translate(2px, 1px); } }
.nf-title { font-size: 1.8rem; margin: 20px 0 12px; }
.nf-desc { color: var(--text-2); margin-bottom: 36px; }
.nf-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ---------- 页脚 ---------- */
.site-footer { border-top: 1px solid var(--line); padding: 74px 0 34px; background: linear-gradient(180deg, rgba(99, 102, 241, 0.04), transparent 30%); position: relative; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 44px; }
.footer-brand .brand { margin-bottom: 22px; }
.footer-tagline { color: var(--text-2); font-size: 0.91rem; line-height: 1.82; margin-bottom: 14px; max-width: 34ch; }
.footer-slogan { color: var(--cyan); font-size: 0.8rem; letter-spacing: 0.14em; }
.fc-title { font-size: 0.76rem; letter-spacing: 0.18em; color: var(--text-3); margin-bottom: 20px; font-weight: 600; }
.fc-list { display: flex; flex-direction: column; gap: 12px; }
.fc-list a, .fc-list span { color: var(--text-2); font-size: 0.87rem; text-decoration: none; transition: color 0.25s; line-height: 1.55; }
.fc-list a:hover { color: var(--cyan); }
.fc-contact-list li { display: flex; gap: 10px; align-items: flex-start; font-size: 0.87rem; color: var(--text-2); line-height: 1.55; }
.fc-contact-list .icon { width: 16px; height: 16px; color: var(--text-3); margin-top: 4px; }
.footer-bottom { margin-top: 56px; padding-top: 28px; border-top: 1px solid var(--line); display: flex; justify-content: space-between; align-items: center; gap: 18px; flex-wrap: wrap; }
.footer-bottom p { color: var(--text-3); font-size: 0.79rem; }
.footer-legal { display: flex; gap: 20px; flex-wrap: wrap; }
.footer-legal a { color: var(--text-3); font-size: 0.79rem; text-decoration: none; }
.footer-legal a:hover { color: var(--cyan); }

/* ---------- 滚动显现 / 3D 倾斜 / 磁吸 ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.8s var(--ease), transform 0.8s var(--ease); transition-delay: var(--d, 0ms); }
.reveal.in-view { opacity: 1; transform: none; }
.tilt { transform: perspective(900px) rotateX(var(--rx, 0deg)) rotateY(var(--ry, 0deg)); transition: transform 0.3s var(--ease); will-change: transform; }
.tilt.reveal { transform: translateY(26px); transition: opacity 0.8s var(--ease), transform 0.3s var(--ease); }
.tilt.reveal.in-view { transform: perspective(900px) rotateX(var(--rx, 0deg)) rotateY(var(--ry, 0deg)); }
.magnetic { will-change: transform; }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; gap: 52px; }
  .hero-visual { max-width: 520px; margin: 0 auto; width: 100%; }
  .hero { padding-top: 130px; }
  .features-grid, .sol-grid, .values-grid, .tst-grid, .sb-grid, .cc-grid, .footer-grid, .cf-grid, .prod-row, .sol-block, .about-intro, .cf-fields, .prod-points, .sol-cols { gap: 34px; }
  .features-grid, .sol-grid, .values-grid, .sb-grid, .cc-grid { grid-template-columns: repeat(2, 1fr); }
  .how-grid { grid-template-columns: repeat(2, 1fr); }
  .how-line { display: none; }
  .tst-grid, .cf-grid, .prod-row, .sol-block, .about-intro, .footer-grid, .cf-fields, .prod-points, .sol-cols { grid-template-columns: 1fr; }
  .prod-row.rev .prod-media, .sol-block.rev .sol-media { order: 0; }
  .nav-links { display: none; }
  .nav-toggle { display: grid; }
  .hero-stats { grid-template-columns: repeat(2, auto); gap: 26px 44px; }
  .page-hero { padding-top: 150px; }
}
@media (max-width: 640px) {
  .section { padding: 76px 0; }
  .features-grid, .sol-grid, .values-grid, .sb-grid, .cc-grid, .how-grid { grid-template-columns: 1fr; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 22px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .hero-cta .btn, .cta-btns .btn, .nf-btns .btn { width: 100%; }
  .section-head { margin-bottom: 44px; }
  .cta-inner { padding: 60px 26px; }
  .stats-band { padding: 70px 0; }
}

/* ---------- 减少动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
  .reveal { opacity: 1; transform: none; }
}