/* ============================================================
   问卷客 · 深色高科技设计系统 (Dark Tech Design System)
   Nebula Blue / Cyan Glow · Glassmorphism · Grid Mesh
   ============================================================ */
:root {
    --primary: #4d7fff;
    --primary-light: #7ea6ff;
    --primary-dark: #2b5fe3;
    --accent: #35dcff;
    --accent-soft: rgba(53, 220, 255, 0.12);
    --bg: #050a17;
    --bg-deep: #070e20;
    --bg-panel: #0b1428;
    --card: rgba(15, 28, 58, 0.55);
    --card-solid: #0d1832;
    --text: #b6c5e4;
    --text-muted: #7d8fb5;
    --text-heading: #eef4ff;
    --border: rgba(125, 165, 255, 0.14);
    --border-strong: rgba(125, 165, 255, 0.32);
    --glow: rgba(77, 127, 255, 0.35);
    --shadow: 0 14px 40px rgba(2, 6, 18, 0.55);
    --shadow-hover: 0 22px 60px rgba(38, 84, 220, 0.32);
    --radius: 16px;
    --radius-sm: 10px;
    --transition: all 0.3s ease;
    --hero-grad: linear-gradient(135deg, #071233 0%, #0a1f5c 45%, #063a5e 100%);
    --hero-grad-deep: linear-gradient(135deg, #050d26 0%, #0a1c52 55%, #062c4e 100%);
    --grad-brand: linear-gradient(135deg, #4d7fff, #35dcff);
    --mono: 'JetBrains Mono', ui-monospace, 'Cascadia Code', Consolas, 'Courier New', monospace;
    --font: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--bg); }
body {
    font-family: var(--font);
    color: var(--text);
    line-height: 1.7;
    overflow-x: hidden;
    background: transparent;
}
/* 全站星云辉光 + 顶部网格 */
body::before {
    content: ''; position: fixed; inset: 0; z-index: -2; pointer-events: none;
    background:
        radial-gradient(1100px 620px at 88% -8%, rgba(53, 220, 255, 0.10), transparent 62%),
        radial-gradient(950px 560px at -8% 18%, rgba(77, 127, 255, 0.13), transparent 58%),
        radial-gradient(800px 700px at 50% 118%, rgba(43, 95, 227, 0.14), transparent 60%);
}
body::after {
    content: ''; position: fixed; inset: 0; z-index: -1; pointer-events: none;
    background-image:
        linear-gradient(rgba(125, 165, 255, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(125, 165, 255, 0.05) 1px, transparent 1px);
    background-size: 46px 46px;
    -webkit-mask-image: radial-gradient(120% 60% at 50% 0%, #000 0%, transparent 75%);
    mask-image: radial-gradient(120% 60% at 50% 0%, #000 0%, transparent 75%);
}
a { text-decoration: none; color: inherit; transition: var(--transition); }
ul, ol { list-style: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; }
::selection { background: rgba(53, 220, 255, 0.3); color: #fff; }

/* ---------- 自定义 SVG 图标（Tabler Icons · MIT） ---------- */
.wk-sprite { position: absolute; width: 0; height: 0; overflow: hidden; }
.wk-icon {
    display: inline-block; width: 1em; height: 1em; flex: none; vertical-align: -0.14em;
    fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round;
    color: #8fb7ff;
}
.wk-flag { width: 1.35em; height: 1em; vertical-align: -0.12em; }
/* 图标容器：霓虹青 */
.omni-icon .wk-icon, .feature-icon .wk-icon, .overseas-icon .wk-icon, .app-icon .wk-icon,
.company-card-icon .wk-icon, .cred-icon .wk-icon, .credential-icon .wk-icon, .quality-icon .wk-icon,
.q-icon .wk-icon, .adv-icon .wk-icon, .solution-icon .wk-icon, .arch-icon .wk-icon,
.strategy-icon .wk-icon, .ci-icon .wk-icon, .info-icon .wk-icon, .m-icon .wk-icon,
.mission-card i .wk-icon, .channel-item i .wk-icon, .industry-card i .wk-icon, .mode-card i .wk-icon,
.orbit-float .wk-icon, .partner-logo i .wk-icon, .team-avatar .wk-icon { color: var(--accent); }
/* 大尺寸容器：线条收细 */
.cred-icon .wk-icon, .credential-icon .wk-icon, .arch-icon .wk-icon, .info-icon .wk-icon,
.mission-card i .wk-icon, .mode-card i .wk-icon, .orbit-float .wk-icon, .industry-card i .wk-icon,
.channel-item i .wk-icon, .strategy-icon .wk-icon, .m-icon .wk-icon, .team-avatar .wk-icon { stroke-width: 1.5; }
/* 小尺寸容器：线条加粗 */
.nav-link i .wk-icon, .lang-caret .wk-icon, .lang-check .wk-icon, .social-links a .wk-icon,
.float-tools a .wk-icon, .model-step i .wk-icon, .region-card h4 i .wk-icon { stroke-width: 2.2; }
/* 深色底色调亮 */
.footer .wk-icon, .page-hero .wk-icon, .cta-box .wk-icon, .hero-content .wk-icon, .breadcrumb .wk-icon { color: #7fe7ff; }
.social-links a:hover .wk-icon { color: #fff; }
.float-tools a:hover .wk-icon, .case-tabs button.active .wk-icon, .app-tabs button.active .wk-icon { color: #fff; }

.max-wid { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section-label {
    display: inline-block; font-family: var(--mono); font-size: 12.5px; letter-spacing: 4px; color: var(--accent);
    font-weight: 700; margin-bottom: 12px; text-transform: uppercase;
}
.section-label::before {
    content: ''; display: inline-block; width: 26px; height: 2px; vertical-align: middle; margin-right: 10px;
    background: var(--grad-brand); box-shadow: 0 0 10px rgba(53, 220, 255, 0.8);
}
.section-title { text-align: center; margin-bottom: 48px; }
.section-title h2 { font-size: 36px; color: var(--text-heading); font-weight: 700; letter-spacing: 0.5px; }
.section-title p { color: var(--text-muted); margin-top: 12px; max-width: 640px; margin-inline: auto; }
.section { padding: 90px 0; }
.section-alt { background: linear-gradient(180deg, rgba(9, 18, 40, 0.6), rgba(5, 10, 23, 0.2)); border-top: 1px solid rgba(125,165,255,0.07); border-bottom: 1px solid rgba(125,165,255,0.07); }

/* ---------- 科技背景装饰 ---------- */
.tech-bg { position: relative; }
.tech-bg::before {
    content: ''; position: absolute; inset: 0; pointer-events: none;
    background-image:
        linear-gradient(rgba(125, 165, 255, 0.07) 1px, transparent 1px),
        linear-gradient(90deg, rgba(125, 165, 255, 0.07) 1px, transparent 1px);
    background-size: 42px 42px;
    -webkit-mask-image: radial-gradient(80% 80% at 50% 40%, #000 0%, transparent 90%);
    mask-image: radial-gradient(80% 80% at 50% 40%, #000 0%, transparent 90%);
}
.grid-overlay {
    position: absolute; inset: 0; pointer-events: none;
    background-image:
        linear-gradient(rgba(160, 200, 255, 0.10) 1px, transparent 1px),
        linear-gradient(90deg, rgba(160, 200, 255, 0.10) 1px, transparent 1px);
    background-size: 44px 44px;
    -webkit-mask-image: radial-gradient(90% 90% at 50% 45%, transparent 30%, #000 100%);
    mask-image: radial-gradient(90% 90% at 50% 45%, transparent 30%, #000 100%);
}
#particles { position: absolute; inset: 0; overflow: hidden; pointer-events: none; }
.particle {
    position: absolute; bottom: -10px; border-radius: 50%;
    background: radial-gradient(circle, rgba(160, 220, 255, 0.95), rgba(77, 159, 255, 0.2));
    width: 6px; height: 6px; opacity: 0; animation: floatUp linear infinite;
}
@keyframes floatUp {
    0% { transform: translateY(0); opacity: 0; }
    12% { opacity: 0.9; }
    85% { opacity: 0.5; }
    100% { transform: translateY(-110vh); opacity: 0; }
}
/* 粒子网络画布（JS 注入） */
.tech-canvas { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; }

/* Hero HUD 科技边框 */
.hero-tech { position: absolute; inset: 44px; z-index: 2; pointer-events: none; }
.hud-corner { position: absolute; width: 34px; height: 34px; border: 1.5px solid rgba(53, 220, 255, 0.4); }
.hud-corner.tl { top: 0; left: 0; border-right: 0; border-bottom: 0; }
.hud-corner.tr { top: 0; right: 0; border-left: 0; border-bottom: 0; }
.hud-corner.bl { bottom: 0; left: 0; border-right: 0; border-top: 0; }
.hud-corner.br { bottom: 0; right: 0; border-left: 0; border-top: 0; }
.hud-line {
    position: absolute; font-family: var(--mono); font-size: 11px; letter-spacing: 4px;
    color: rgba(53, 220, 255, 0.55); writing-mode: vertical-rl; white-space: nowrap;
}
.hud-line.hl1 { left: 10px; top: 50%; transform: translateY(-50%) rotate(180deg); }
.hud-line.hl2 { right: 10px; top: 50%; transform: translateY(-50%); }

/* ---------- 按钮 ---------- */
.btn {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 14px 32px; border-radius: 50px; font-size: 15px; font-weight: 600;
    border: 1px solid transparent; transition: var(--transition); white-space: nowrap;
}
.btn-primary {
    background: var(--grad-brand); color: #04101f;
    box-shadow: 0 8px 28px rgba(53, 130, 255, 0.45), inset 0 1px 0 rgba(255, 255, 255, 0.35);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 14px 40px rgba(53, 190, 255, 0.55); filter: brightness(1.08); }
.btn-outline {
    background: rgba(125, 165, 255, 0.07); color: #d5e4ff;
    border-color: var(--border-strong); backdrop-filter: blur(8px);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06);
}
.btn-outline:hover {
    background: rgba(77, 127, 255, 0.18); border-color: var(--primary);
    color: #fff; transform: translateY(-3px); box-shadow: 0 10px 30px rgba(38, 84, 220, 0.35);
}
.btn-ghost {
    border-color: rgba(160, 200, 255, 0.45); color: #eaf3ff;
    background: rgba(160, 200, 255, 0.10); backdrop-filter: blur(8px);
}
.btn-ghost:hover { background: rgba(160, 200, 255, 0.22); border-color: var(--accent); color: #fff; transform: translateY(-3px); }
.btn-sm { padding: 9px 20px; font-size: 13px; }

/* ---------- Header ---------- */
.header {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    background: rgba(5, 10, 23, 0.55); backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(125, 165, 255, 0.10); transition: var(--transition);
}
.header.scrolled { background: rgba(5, 10, 23, 0.88); box-shadow: 0 10px 30px rgba(2, 6, 18, 0.5); border-bottom-color: rgba(125, 165, 255, 0.18); }
.header-inner { max-width: 1280px; margin: 0 auto; padding: 0 24px; display: flex; align-items: center; justify-content: space-between; height: 72px; }
.logo { display: flex; align-items: center; gap: 10px; font-size: 21px; font-weight: 800; color: var(--text-heading); }
.logo-icon { height: 38px; width: auto; display: block; filter: drop-shadow(0 0 10px rgba(53, 130, 255, 0.65)); }
.logo span { color: var(--accent); }
.nav { display: flex; align-items: center; gap: 6px; }
.nav-item { position: relative; }
.nav-link {
    display: inline-flex; align-items: center; gap: 4px; padding: 10px 14px;
    color: #cfdefa; font-size: 15px; font-weight: 500; border-radius: 8px;
}
.nav-link i { font-style: normal; font-size: 11px; color: var(--text-muted); transition: var(--transition); }
.nav-link:hover { color: var(--accent); }
.nav-link.active { color: #fff; font-weight: 700; }
.nav-link.active::after {
    content: ''; display: block; height: 2px; border-radius: 2px; margin-top: 2px;
    background: var(--grad-brand); box-shadow: 0 0 10px rgba(53, 220, 255, 0.9);
}
.dropdown {
    position: absolute; top: 100%; left: 50%; transform: translateX(-50%) translateY(12px);
    min-width: 190px; background: rgba(10, 19, 42, 0.96); backdrop-filter: blur(16px);
    border: 1px solid var(--border-strong); border-radius: 12px;
    box-shadow: 0 22px 50px rgba(2, 6, 18, 0.65); padding: 8px;
    opacity: 0; visibility: hidden; transition: var(--transition);
}
.nav-item:hover .dropdown { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(6px); }
.dropdown a { display: block; padding: 10px 14px; border-radius: 8px; font-size: 14px; color: var(--text); }
.dropdown a:hover { background: rgba(77, 127, 255, 0.14); color: var(--accent); }

/* 移动端 */
.mobile-menu-btn { display: none; width: 42px; height: 42px; border: 1px solid var(--border-strong); border-radius: 10px; background: rgba(125, 165, 255, 0.08); flex-direction: column; align-items: center; justify-content: center; gap: 5px; }
.mobile-menu-btn span { display: block; width: 20px; height: 2px; background: #d5e4ff; border-radius: 2px; transition: var(--transition); }
.mobile-menu-btn.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.mobile-menu-btn.active span:nth-child(2) { opacity: 0; }
.mobile-menu-btn.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.mobile-nav {
    position: fixed; inset: 0; z-index: 999; background: rgba(4, 8, 19, 0.97);
    backdrop-filter: blur(12px); padding: 90px 24px 40px; overflow-y: auto;
    opacity: 0; visibility: hidden; transition: var(--transition);
}
.mobile-nav.open { opacity: 1; visibility: visible; }
.mobile-nav a { display: block; padding: 14px 8px; font-size: 17px; color: var(--text-heading); font-weight: 600; border-bottom: 1px solid rgba(125, 165, 255, 0.10); }
.mobile-nav a:active, .mobile-nav a:hover { color: var(--accent); }
.mobile-nav .sub-group { padding-left: 18px; }
.mobile-nav .sub-group a { font-size: 15px; font-weight: 400; color: var(--text-muted); }

/* ---------- 首页 Hero 轮播 ---------- */
.hero-slider { position: relative; height: 100vh; min-height: 620px; max-height: 860px; overflow: hidden; }
.hero-slider::before, .hero-slider::after {
    content: ''; position: absolute; border-radius: 50%; filter: blur(90px); z-index: 1; pointer-events: none;
}
.hero-slider::before { width: 560px; height: 560px; left: -140px; top: -120px; background: rgba(43, 95, 227, 0.35); animation: drift 14s ease-in-out infinite alternate; }
.hero-slider::after { width: 520px; height: 520px; right: -120px; bottom: -160px; background: rgba(53, 220, 255, 0.22); animation: drift 18s ease-in-out infinite alternate-reverse; }
@keyframes drift { from { transform: translate(0, 0) scale(1); } to { transform: translate(60px, 40px) scale(1.12); } }
.hero-slide { position: absolute; inset: 0; opacity: 0; transition: opacity 1.2s ease; }
.hero-slide.active { opacity: 1; }
.hero-bg {
    position: absolute; inset: 0; background-size: cover; background-position: center;
    background-image: linear-gradient(135deg, rgba(6, 14, 38, 0.92) 0%, rgba(9, 26, 78, 0.78) 50%, rgba(6, 44, 72, 0.6) 100%);
}
.hero-bg::after {
    content: ''; position: absolute; inset: 0;
    background: radial-gradient(120% 90% at 50% 108%, rgba(3, 7, 18, 0.9) 0%, transparent 55%);
}
.hero-content {
    position: relative; z-index: 3; height: 100%; display: flex; flex-direction: column;
    justify-content: center; align-items: center; text-align: center; color: #fff; padding: 0 24px;
}
.hero-badge {
    display: inline-flex; align-items: center; gap: 10px; padding: 8px 22px; border-radius: 50px;
    background: rgba(53, 220, 255, 0.08); border: 1px solid rgba(53, 220, 255, 0.35);
    font-family: var(--mono); font-size: 12.5px; letter-spacing: 3px; color: #9beaff;
    backdrop-filter: blur(8px); margin-bottom: 26px; box-shadow: 0 0 24px rgba(53, 220, 255, 0.18), inset 0 1px 0 rgba(255,255,255,0.08);
}
.hero-badge::before {
    content: ''; width: 7px; height: 7px; border-radius: 50%; background: var(--accent);
    box-shadow: 0 0 10px var(--accent); animation: pulse 1.8s ease-in-out infinite;
}
@keyframes pulse { 0%, 100% { opacity: 1; transform: scale(1); } 50% { opacity: 0.45; transform: scale(0.72); } }
.hero-content h1 { font-size: 58px; font-weight: 800; line-height: 1.18; margin-bottom: 20px; letter-spacing: 1px; text-shadow: 0 8px 40px rgba(3, 10, 30, 0.65); }
.hero-content h1 em {
    font-style: normal;
    background: linear-gradient(100deg, #7ea6ff 0%, #35dcff 55%, #9beaff 100%);
    -webkit-background-clip: text; background-clip: text; color: transparent;
    filter: drop-shadow(0 0 22px rgba(53, 220, 255, 0.45));
}
.hero-content p { font-size: 18px; max-width: 720px; color: rgba(214, 230, 255, 0.88); margin-bottom: 36px; }
.hero-btns { display: flex; gap: 16px; flex-wrap: wrap; justify-content: center; }
.hero-stats {
    display: flex; gap: 0; margin-top: 56px; flex-wrap: wrap; justify-content: center;
    background: rgba(8, 16, 38, 0.55); border: 1px solid rgba(125, 165, 255, 0.16);
    border-radius: 18px; backdrop-filter: blur(12px); box-shadow: 0 20px 50px rgba(2, 6, 18, 0.45);
    overflow: hidden;
}
.hero-stat { text-align: center; padding: 22px 42px; position: relative; }
.hero-stat + .hero-stat::before { content: ''; position: absolute; left: 0; top: 22%; bottom: 22%; width: 1px; background: linear-gradient(180deg, transparent, rgba(125, 165, 255, 0.4), transparent); }
.hero-stat b {
    display: block; font-size: 32px; font-weight: 800; font-family: var(--mono);
    background: linear-gradient(180deg, #ffffff, #9db9ff); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-stat span { font-size: 12.5px; color: rgba(190, 208, 240, 0.75); letter-spacing: 1px; }
.hero-dots { position: absolute; bottom: 34px; left: 50%; transform: translateX(-50%); display: flex; gap: 10px; z-index: 5; }
.hero-dots button { width: 26px; height: 4px; border-radius: 4px; border: 0; background: rgba(160, 200, 255, 0.3); padding: 0; transition: var(--transition); }
.hero-dots button.active { background: var(--grad-brand); box-shadow: 0 0 12px rgba(53, 220, 255, 0.8); }
.hero-arrows button {
    position: absolute; top: 50%; transform: translateY(-50%); z-index: 5;
    width: 52px; height: 52px; border-radius: 50%; border: 1px solid rgba(160, 200, 255, 0.35);
    background: rgba(10, 20, 44, 0.5); color: #d5e4ff; font-size: 22px; backdrop-filter: blur(8px); transition: var(--transition);
}
.hero-arrows button:hover { background: var(--grad-brand); border-color: transparent; color: #04101f; box-shadow: 0 0 26px rgba(53, 190, 255, 0.6); }
.hero-prev { left: 30px; }
.hero-next { right: 30px; }

/* ---------- 首页 About 模块 ---------- */
.about-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 60px; align-items: center; }
.about-slogan { font-size: 24px; font-weight: 700; color: var(--text-heading); line-height: 1.6; margin-bottom: 20px; }
.about-slogan em {
    color: var(--accent); font-style: normal;
    text-shadow: 0 0 24px rgba(53, 220, 255, 0.45);
}
.about-left p { color: var(--text-muted); margin-bottom: 16px; }
.about-more { margin-top: 20px; }
.stats-bar { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-top: 36px; }
.stat-item {
    background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 26px 14px; text-align: center; backdrop-filter: blur(10px); transition: var(--transition);
    position: relative; overflow: hidden;
}
.stat-item::before {
    content: ''; position: absolute; top: 0; left: 20%; right: 20%; height: 1px;
    background: linear-gradient(90deg, transparent, rgba(53, 220, 255, 0.8), transparent);
    opacity: 0; transition: var(--transition);
}
.stat-item:hover { transform: translateY(-6px); border-color: var(--border-strong); box-shadow: var(--shadow-hover); }
.stat-item:hover::before { opacity: 1; }
.stat-item b {
    display: block; font-size: 30px; font-weight: 800; font-family: var(--mono);
    background: var(--grad-brand); -webkit-background-clip: text; background-clip: text; color: transparent;
    filter: drop-shadow(0 0 14px rgba(53, 190, 255, 0.3));
}
.stat-item span { font-size: 13px; color: var(--text-muted); }
.about-visual { position: relative; min-height: 420px; }
.about-visual-img {
    position: absolute; inset: 0; border-radius: var(--radius); background-size: cover; background-position: center;
    border: 1px solid var(--border-strong); box-shadow: var(--shadow-hover); overflow: hidden;
}
.about-visual-img::after { content: ''; position: absolute; inset: 0; background: linear-gradient(160deg, rgba(9, 20, 48, 0.35), rgba(5, 10, 23, 0.15)); }
.orbit-ring { position: absolute; border-radius: 50%; border: 1.5px dashed rgba(53, 220, 255, 0.30); }
.orbit-ring.r1 { inset: -70px -70px auto auto; width: 320px; height: 320px; animation: spin 26s linear infinite; }
.orbit-ring.r2 { inset: auto auto -90px -90px; width: 260px; height: 260px; animation: spin 32s linear infinite reverse; }
.orbit-ring.r3 { inset: 20% auto auto 10%; width: 190px; height: 190px; animation: spin 22s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.orbit-float {
    position: absolute; width: 56px; height: 56px; border-radius: 16px;
    background: rgba(13, 24, 50, 0.85); border: 1px solid var(--border-strong);
    box-shadow: 0 14px 34px rgba(2, 6, 18, 0.55), inset 0 1px 0 rgba(255, 255, 255, 0.08);
    display: flex; align-items: center; justify-content: center; font-size: 24px;
    animation: float 4s ease-in-out infinite; backdrop-filter: blur(8px);
}
.orbit-float.f1 { top: 12%; right: 12%; }
.orbit-float.f2 { bottom: 16%; left: 6%; animation-delay: 1.2s; }
.orbit-float.f3 { top: 42%; right: 2%; animation-delay: 2s; }
@keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-14px); } }

/* ---------- 通用卡片网格 ---------- */
.omni-grid, .feature-grid, .overseas-grid, .app-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.omni-card, .feature-card, .overseas-card, .app-card {
    background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 34px 28px; transition: var(--transition); position: relative; overflow: hidden;
    backdrop-filter: blur(12px);
}
.omni-card::before, .feature-card::before, .overseas-card::before, .app-card::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
    background: var(--grad-brand); box-shadow: 0 0 14px rgba(53, 220, 255, 0.8);
    transform: scaleX(0); transform-origin: left; transition: var(--transition);
}
.omni-card:hover, .feature-card:hover, .overseas-card:hover, .app-card:hover {
    transform: translateY(-8px); box-shadow: var(--shadow-hover);
    border-color: rgba(125, 165, 255, 0.4); background: rgba(19, 34, 70, 0.65);
}
.omni-card:hover::before, .feature-card:hover::before, .overseas-card:hover::before, .app-card:hover::before { transform: scaleX(1); }
.omni-icon, .feature-icon, .overseas-icon, .app-icon {
    width: 60px; height: 60px; border-radius: 16px; display: flex; align-items: center; justify-content: center;
    font-size: 28px; background: linear-gradient(135deg, rgba(77, 127, 255, 0.16), rgba(53, 220, 255, 0.12));
    border: 1px solid rgba(125, 165, 255, 0.22); margin-bottom: 20px;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
}
.omni-card h3, .feature-card h3, .overseas-card h3, .app-card h3 { font-size: 19px; color: var(--text-heading); margin-bottom: 12px; }
.omni-card p, .feature-card p, .overseas-card p, .app-card p { font-size: 14px; color: var(--text-muted); }
.omni-card ul { margin-top: 12px; }
.omni-card ul li { font-size: 13px; color: var(--text-muted); padding: 4px 0 4px 16px; position: relative; }
.omni-card ul li::before {
    content: ''; position: absolute; left: 0; top: .52em; width: 11px; height: 11px;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2335dcff' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M9 4.8 16.4 12 9 19.2'/%3E%3C/svg%3E") no-repeat center / contain;
}

/* ---------- 案例 ---------- */
.case-tabs { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; margin-bottom: 40px; }
.case-tabs button {
    padding: 10px 22px; border-radius: 50px; border: 1px solid var(--border-strong);
    background: rgba(15, 28, 58, 0.5); color: var(--text); font-size: 14px; transition: var(--transition); backdrop-filter: blur(8px);
}
.case-tabs button:hover { border-color: var(--primary); color: #fff; }
.case-tabs button.active { background: var(--grad-brand); color: #04101f; border-color: transparent; box-shadow: 0 6px 22px rgba(53, 170, 255, 0.45); font-weight: 600; }
.case-panel { display: none; }
.case-panel.active { display: block; animation: fadeIn 0.5s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: none; } }
.case-card {
    display: grid; grid-template-columns: 1fr 1fr; gap: 0; background: var(--card);
    border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; transition: var(--transition);
    backdrop-filter: blur(12px);
}
.case-card:hover { box-shadow: var(--shadow-hover); border-color: rgba(125, 165, 255, 0.4); }
.case-img { min-height: 340px; background-size: cover; background-position: center; }
.case-info { padding: 44px; }
.case-tag {
    display: inline-block; padding: 5px 14px; border-radius: 50px; background: var(--accent-soft);
    color: var(--accent); font-size: 12px; font-weight: 700; margin-bottom: 16px;
    border: 1px solid rgba(53, 220, 255, 0.3); font-family: var(--mono);
}
.case-info h3 { font-size: 26px; color: var(--text-heading); margin-bottom: 14px; }
.case-info p { color: var(--text-muted); font-size: 15px; margin-bottom: 20px; }
.case-points { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 24px; }
.case-points span {
    font-size: 13px; color: var(--text); background: rgba(125, 165, 255, 0.06);
    border: 1px solid var(--border); border-radius: 8px; padding: 8px 12px;
}
.case-more { color: var(--accent); font-weight: 600; font-size: 14px; display: inline-flex; align-items: center; gap: 6px; }
.case-more:hover { gap: 12px; filter: drop-shadow(0 0 8px rgba(53, 220, 255, 0.6)); }

/* 案例列表页 */
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.case-item {
    background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden;
    transition: var(--transition); display: block; backdrop-filter: blur(12px);
}
.case-item:hover { transform: translateY(-8px); box-shadow: var(--shadow-hover); border-color: rgba(125, 165, 255, 0.4); }
.case-item-img { height: 210px; background-size: cover; background-position: center; position: relative; }
.case-item-img .case-tag { position: absolute; top: 16px; left: 16px; background: rgba(8, 15, 34, 0.85); backdrop-filter: blur(6px); }
.case-item-body { padding: 24px; }
.case-item-body h3 { font-size: 19px; color: var(--text-heading); margin-bottom: 8px; }
.case-item-body p { font-size: 14px; color: var(--text-muted); margin-bottom: 14px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

/* 案例详情 */
.case-detail { display: grid; grid-template-columns: 1fr 1fr; background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); backdrop-filter: blur(12px); }
.case-detail-img { min-height: 520px; background-size: cover; background-position: center; }
.case-detail-info { padding: 50px; }
.case-detail-info h2 { color: var(--text-heading); font-size: 30px; margin-bottom: 20px; }
.case-detail-info > p { color: var(--text-muted); margin-bottom: 24px; }
.case-detail-info h3 { color: var(--accent); font-size: 18px; margin: 26px 0 12px; position: relative; padding-left: 14px; }
.case-detail-info h3::before { content: ''; position: absolute; left: 0; top: 6px; bottom: 6px; width: 4px; border-radius: 4px; background: var(--grad-brand); box-shadow: 0 0 10px rgba(53, 220, 255, 0.7); }
.case-detail-info ul { list-style: none; }
.case-detail-info li { margin-bottom: 10px; padding-left: 20px; position: relative; color: var(--text); font-size: 15px; }
.case-detail-info li::before {
    content: ''; position: absolute; left: 0; top: .42em; width: 14px; height: 14px;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2335dcff' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M4.6 12.4l4.6 4.6L19.6 6.6'/%3E%3C/svg%3E") no-repeat center / contain;
}
.breadcrumb { display: flex; align-items: center; gap: 8px; font-size: 14px; color: rgba(190, 214, 255, 0.75); margin-bottom: 18px; flex-wrap: wrap; font-family: var(--mono); }
.breadcrumb a { color: #d5e4ff; }
.breadcrumb a:hover { color: var(--accent); opacity: 1; }

/* ---------- 合作伙伴 ---------- */
.partners-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.partner-logo {
    height: 92px; display: flex; align-items: center; justify-content: center; gap: 10px;
    background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
    font-weight: 800; font-size: 18px; color: var(--text-muted); transition: var(--transition); letter-spacing: 1px;
    backdrop-filter: blur(10px);
}
.partner-logo:hover { border-color: rgba(125, 165, 255, 0.4); color: #fff; transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.partner-logo i {
    font-style: normal; width: 38px; height: 38px; border-radius: 10px;
    background: linear-gradient(135deg, rgba(77, 127, 255, 0.16), rgba(53, 220, 255, 0.12));
    border: 1px solid rgba(125, 165, 255, 0.2);
    display: flex; align-items: center; justify-content: center; font-size: 18px; color: var(--accent);
}

/* ---------- 团队 ---------- */
.team-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.team-card {
    background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 30px 24px; text-align: center; transition: var(--transition); position: relative; overflow: hidden;
    backdrop-filter: blur(12px);
}
.team-card::after { content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 2px; background: var(--grad-brand); transform: scaleX(0); transition: var(--transition); box-shadow: 0 0 12px rgba(53, 220, 255, 0.8); }
.team-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-hover); border-color: rgba(125, 165, 255, 0.4); }
.team-card:hover::after { transform: scaleX(1); }
.team-avatar {
    width: 84px; height: 84px; margin: 0 auto 16px; border-radius: 50%;
    background: linear-gradient(135deg, rgba(77, 127, 255, 0.18), rgba(53, 220, 255, 0.12));
    border: 1.5px solid var(--border-strong); display: flex; align-items: center; justify-content: center; font-size: 36px;
    box-shadow: 0 0 26px rgba(53, 130, 255, 0.25);
}
.team-info h4 { color: var(--text-heading); font-size: 17px; }
.team-info .role { color: var(--accent); font-size: 13px; font-weight: 600; margin: 4px 0 10px; font-family: var(--mono); }
.team-info p { font-size: 13px; color: var(--text-muted); }

/* ---------- 咨询阶段 ---------- */
.stage-flow { display: flex; align-items: stretch; gap: 0; justify-content: center; flex-wrap: wrap; }
.stage-item {
    background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 26px 20px; text-align: center; width: 200px; transition: var(--transition); position: relative;
    backdrop-filter: blur(12px);
}
.stage-item:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); border-color: rgba(125, 165, 255, 0.4); }
.stage-num {
    width: 44px; height: 44px; margin: 0 auto 14px; border-radius: 50%; color: #04101f;
    background: var(--grad-brand); display: flex; align-items: center; justify-content: center;
    font-size: 17px; font-weight: 800; box-shadow: 0 6px 20px rgba(53, 170, 255, 0.5);
}
.stage-item h4 { color: var(--text-heading); font-size: 15px; margin-bottom: 6px; }
.stage-item p { font-size: 12px; color: var(--text-muted); }
.stage-arrow { display: flex; align-items: center; color: var(--accent); font-size: 22px; padding: 0 10px; text-shadow: 0 0 12px rgba(53, 220, 255, 0.7); }

/* ---------- CTA ---------- */
.cta-box {
    position: relative; border-radius: 24px; overflow: hidden; padding: 70px 48px; text-align: center; color: #fff;
    background: var(--hero-grad-deep);
    border: 1px solid rgba(125, 165, 255, 0.2);
    box-shadow: 0 30px 80px rgba(2, 6, 18, 0.6), inset 0 1px 0 rgba(255, 255, 255, 0.06);
}
.cta-box::before {
    content: ''; position: absolute; inset: -40%; pointer-events: none;
    background: conic-gradient(from 0deg, transparent 0deg, rgba(53, 220, 255, 0.16) 40deg, transparent 80deg, transparent 180deg, rgba(77, 127, 255, 0.2) 220deg, transparent 260deg);
    animation: spin 12s linear infinite;
}
.cta-box h2 { font-size: 34px; margin-bottom: 14px; position: relative; z-index: 2; }
.cta-box p { opacity: 0.88; margin-bottom: 30px; position: relative; z-index: 2; }
.cta-box .btn { position: relative; z-index: 2; }

/* ---------- Footer ---------- */
.footer {
    background: linear-gradient(180deg, #040812 0%, #071026 100%);
    border-top: 1px solid rgba(125, 165, 255, 0.12);
    color: #9db0d6; padding: 70px 0 0; position: relative;
}
.footer::before {
    content: ''; position: absolute; top: -1px; left: 15%; right: 15%; height: 1px;
    background: linear-gradient(90deg, transparent, rgba(53, 220, 255, 0.7), transparent);
    box-shadow: 0 0 18px rgba(53, 220, 255, 0.55);
}
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 40px; }
.footer .logo { color: #fff; }
.footer h4 { color: #fff; font-size: 16px; margin-bottom: 18px; position: relative; padding-left: 12px; }
.footer h4::before { content: ''; position: absolute; left: 0; top: 6px; bottom: 6px; width: 3px; background: var(--grad-brand); border-radius: 3px; box-shadow: 0 0 8px rgba(53, 220, 255, 0.8); }
.footer p { font-size: 13px; line-height: 2; }
.footer a:hover { color: var(--accent); }
.social-links { display: flex; gap: 10px; margin-top: 18px; }
.social-links a {
    width: 40px; height: 40px; border-radius: 10px; border: 1px solid rgba(125, 165, 255, 0.25);
    display: flex; align-items: center; justify-content: center; font-size: 17px;
    color: #b9cbef; background: rgba(125, 165, 255, 0.05); transition: var(--transition);
}
.social-links a:hover {
    background: var(--grad-brand); color: #04101f; border-color: transparent;
    box-shadow: 0 0 22px rgba(53, 190, 255, 0.5); transform: translateY(-3px);
}
.footer-bottom { border-top: 1px solid rgba(125, 165, 255, 0.10); padding: 20px 0; text-align: center; font-size: 13px; color: rgba(157, 176, 214, 0.75); font-family: var(--mono); letter-spacing: 0.5px; }
.footer-bottom a:hover { color: #fff; }

/* ---------- 浮动工具 ---------- */
.float-tools { position: fixed; right: 22px; bottom: 30px; display: flex; flex-direction: column; gap: 10px; z-index: 800; }
.float-tools a {
    width: 46px; height: 46px; border-radius: 12px; display: flex; align-items: center; justify-content: center;
    background: rgba(13, 24, 50, 0.9); border: 1px solid var(--border-strong); color: var(--accent); font-size: 19px;
    box-shadow: var(--shadow), inset 0 1px 0 rgba(255, 255, 255, 0.08); transition: var(--transition); backdrop-filter: blur(10px);
}
.float-tools a:hover { background: var(--grad-brand); color: #04101f; transform: translateY(-4px); box-shadow: 0 12px 30px rgba(53, 190, 255, 0.5); border-color: transparent; }

/* ============================================================
   内页通用
   ============================================================ */
.page-hero {
    position: relative; padding: 150px 0 90px; color: #fff; text-align: center; overflow: hidden;
    background: var(--hero-grad-deep);
    border-bottom: 1px solid rgba(125, 165, 255, 0.12);
}
.page-hero::before {
    content: ''; position: absolute; inset: 0; pointer-events: none;
    background-image:
        linear-gradient(rgba(125, 165, 255, 0.08) 1px, transparent 1px),
        linear-gradient(90deg, rgba(125, 165, 255, 0.08) 1px, transparent 1px);
    background-size: 46px 46px;
    -webkit-mask-image: radial-gradient(90% 100% at 50% 0%, #000 0%, transparent 85%);
    mask-image: radial-gradient(90% 100% at 50% 0%, #000 0%, transparent 85%);
}
.page-hero::after {
    content: ''; position: absolute; width: 640px; height: 640px; border-radius: 50%; pointer-events: none;
    background: radial-gradient(circle, rgba(53, 220, 255, 0.14), transparent 65%);
    filter: blur(30px); left: 50%; top: -260px; transform: translateX(-50%);
}
.page-hero-bg { position: absolute; inset: 0; background-size: cover; background-position: center; opacity: 0.16; }
.page-hero .max-wid { position: relative; z-index: 2; }
.page-hero .section-label { color: #7fe7ff; }
.page-hero .section-label::before { background: linear-gradient(90deg, #4d7fff, #35dcff); }
.page-hero h1 { font-size: 46px; font-weight: 800; margin-bottom: 14px; text-shadow: 0 10px 40px rgba(3, 10, 30, 0.7); }
.page-hero p { font-size: 17px; color: rgba(200, 218, 250, 0.85); max-width: 680px; margin-inline: auto; }

/* 子导航（锚点导航） */
.sub-nav {
    position: sticky; top: 72px; z-index: 500; background: rgba(5, 10, 23, 0.85);
    backdrop-filter: blur(14px); border-bottom: 1px solid rgba(125, 165, 255, 0.12); box-shadow: 0 10px 26px rgba(2, 6, 18, 0.4);
}
.sub-nav-inner { display: flex; gap: 4px; overflow-x: auto; padding: 8px 0; scrollbar-width: none; }
.sub-nav-inner::-webkit-scrollbar { display: none; }
.sub-nav a {
    flex-shrink: 0; padding: 9px 20px; border-radius: 50px; font-size: 14px; color: var(--text);
    border: 1px solid transparent; white-space: nowrap;
}
.sub-nav a:hover { color: var(--accent); }
.sub-nav a.active { background: var(--grad-brand); color: #04101f; box-shadow: 0 6px 18px rgba(53, 170, 255, 0.4); font-weight: 600; }

.page-section { padding: 90px 0; }
.page-section-alt { background: linear-gradient(180deg, rgba(9, 18, 40, 0.6), rgba(5, 10, 23, 0.2)); }

/* ---------- 关于：公司简介 ---------- */
.company-layout { display: grid; grid-template-columns: 1.1fr 1fr; gap: 60px; align-items: center; }
.company-info-list { margin-top: 10px; }
.company-info-list li { display: flex; gap: 12px; padding: 12px 0; border-bottom: 1px dashed var(--border-strong); font-size: 15px; }
.company-info-list li b { color: var(--accent); font-weight: 700; flex-shrink: 0; font-family: var(--mono); }
.company-info-list li span { color: var(--text); }
.company-visual { position: relative; min-height: 460px; }
.company-visual-img { position: absolute; inset: 0; border-radius: var(--radius); background-size: cover; background-position: center; border: 1px solid var(--border-strong); box-shadow: var(--shadow-hover); }
.company-card {
    position: absolute; background: rgba(13, 24, 50, 0.92); border: 1px solid var(--border-strong);
    border-radius: 14px; padding: 14px 18px; box-shadow: var(--shadow-hover); display: flex; align-items: center; gap: 12px;
    animation: float 4s ease-in-out infinite; backdrop-filter: blur(10px);
}
.company-card-icon {
    width: 44px; height: 44px; border-radius: 12px; color: var(--accent); font-size: 20px;
    background: linear-gradient(135deg, rgba(77, 127, 255, 0.18), rgba(53, 220, 255, 0.12));
    border: 1px solid rgba(125, 165, 255, 0.24);
    display: flex; align-items: center; justify-content: center;
}
.company-card b { display: block; color: var(--text-heading); font-size: 14px; }
.company-card span { font-size: 12px; color: var(--text-muted); }
.company-card.c1 { top: 8%; left: -30px; }
.company-card.c2 { bottom: 14%; right: -20px; animation-delay: 1.4s; }
.mission-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 20px; }
.mission-card {
    background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 32px 26px; text-align: center; transition: var(--transition); backdrop-filter: blur(12px);
}
.mission-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); border-color: rgba(125, 165, 255, 0.4); }
.mission-card i { font-style: normal; font-size: 36px; display: block; margin-bottom: 14px; }
.mission-card h3 { color: var(--text-heading); font-size: 18px; margin-bottom: 8px; }
.mission-card p { font-size: 14px; color: var(--text-muted); }

/* ---------- 资格认证 ---------- */
.credentials-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.credential-card {
    background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 40px 30px; text-align: center; transition: var(--transition); position: relative; overflow: hidden;
    backdrop-filter: blur(12px);
}
.credential-card::before { content: ''; position: absolute; inset: 0; background: linear-gradient(160deg, rgba(77, 127, 255, 0.08), transparent 55%); }
.credential-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-hover); border-color: rgba(125, 165, 255, 0.4); }
.cred-icon, .credential-icon {
    width: 84px; height: 84px; margin: 0 auto 20px; border-radius: 50%;
    background: linear-gradient(135deg, rgba(77, 127, 255, 0.14), rgba(53, 220, 255, 0.10));
    border: 1.5px dashed var(--border-strong); display: flex; align-items: center; justify-content: center;
    font-size: 38px; transition: var(--transition);
}
.credential-card:hover .cred-icon, .credential-card:hover .credential-icon {
    border-style: solid; border-color: var(--accent); box-shadow: 0 0 26px rgba(53, 220, 255, 0.35);
}
.credential-card h3 { color: var(--text-heading); font-size: 19px; margin-bottom: 10px; }
.credential-card p { font-size: 14px; color: var(--text-muted); }

/* ---------- 核心优势 ---------- */
.advantage-list { max-width: 860px; margin: 0 auto; }
.advantage-item {
    display: flex; gap: 26px; padding: 34px; background: var(--card); border: 1px solid var(--border);
    border-radius: var(--radius); margin-bottom: 22px; transition: var(--transition); align-items: flex-start;
    backdrop-filter: blur(12px);
}
.advantage-item:hover { transform: translateX(10px); box-shadow: var(--shadow-hover); border-color: rgba(125, 165, 255, 0.4); }
.adv-num {
    flex-shrink: 0; font-size: 44px; font-weight: 800; line-height: 1; font-family: var(--mono);
    background: var(--grad-brand); -webkit-background-clip: text; background-clip: text; color: transparent;
    filter: drop-shadow(0 0 12px rgba(53, 190, 255, 0.35));
}
.adv-content h3 { color: var(--text-heading); font-size: 21px; margin-bottom: 10px; }
.adv-content p { color: var(--text-muted); font-size: 14px; }

/* ---------- 全域数据 / 出海 / 方案 板块 ---------- */
.block { padding: 90px 0; scroll-margin-top: 130px; }
.block-alt { background: linear-gradient(180deg, rgba(9, 18, 40, 0.6), rgba(5, 10, 23, 0.2)); }
.block .section-title { margin-bottom: 42px; }
.channel-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.channel-item {
    background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 26px 24px; display: flex; gap: 16px; align-items: flex-start; transition: var(--transition);
    backdrop-filter: blur(12px);
}
.channel-item:hover { box-shadow: var(--shadow-hover); border-color: rgba(125, 165, 255, 0.4); transform: translateY(-4px); }
.channel-item i { font-style: normal; font-size: 26px; flex-shrink: 0; }
.channel-item h4 { color: var(--text-heading); font-size: 16px; margin-bottom: 6px; }
.channel-item p { font-size: 13px; color: var(--text-muted); }

.method-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.method-card {
    background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 30px 26px; transition: var(--transition); backdrop-filter: blur(12px);
}
.method-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); border-color: rgba(125, 165, 255, 0.4); }
.method-card .m-icon { font-size: 30px; margin-bottom: 14px; }
.method-card h4 { color: var(--text-heading); font-size: 17px; margin-bottom: 8px; }
.method-card p { font-size: 13px; color: var(--text-muted); }

.industry-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.industry-card {
    background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 28px 24px; transition: var(--transition); text-align: center; backdrop-filter: blur(12px);
}
.industry-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); border-color: rgba(125, 165, 255, 0.4); }
.industry-card i { font-style: normal; font-size: 32px; display: block; margin-bottom: 12px; }
.industry-card h4 { color: var(--text-heading); font-size: 16px; margin-bottom: 12px; }
.industry-card p { font-size: 13px; color: var(--text-muted); }

.region-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.region-card {
    background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 30px 26px; transition: var(--transition); backdrop-filter: blur(12px);
}
.region-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: rgba(125, 165, 255, 0.4); }
.region-card h4 { color: var(--text-heading); font-size: 17px; margin-bottom: 12px; display: flex; align-items: center; gap: 8px; }
.region-card h4 i { font-style: normal; }
.region-card p { font-size: 13px; color: var(--text-muted); }
.region-card h3 { color: var(--text-heading); font-size: 17px; margin-bottom: 12px; }

.service-mode { display: flex; gap: 26px; flex-wrap: wrap; justify-content: center; }
.mode-card {
    flex: 1; min-width: 260px; background: var(--card); border: 1px solid var(--border);
    border-radius: var(--radius); padding: 34px 28px; text-align: center; transition: var(--transition);
    backdrop-filter: blur(12px);
}
.mode-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-hover); border-color: rgba(125, 165, 255, 0.4); }
.mode-card i { font-style: normal; font-size: 40px; display: block; margin-bottom: 16px; }
.mode-card h4 { color: var(--text-heading); font-size: 18px; margin-bottom: 10px; }
.mode-card p { font-size: 13px; color: var(--text-muted); }

.solution-list { max-width: 980px; margin: 0 auto; }
.solution-item {
    display: grid; grid-template-columns: 70px 1fr; gap: 26px; padding: 36px; background: var(--card);
    border: 1px solid var(--border); border-radius: var(--radius); margin-bottom: 24px; transition: var(--transition);
    backdrop-filter: blur(12px);
}
.solution-item:hover { box-shadow: var(--shadow-hover); border-color: rgba(125, 165, 255, 0.4); transform: translateY(-4px); }
.solution-num, .solution-index {
    font-size: 52px; font-weight: 800; line-height: 1; font-family: var(--mono);
    background: var(--grad-brand); -webkit-background-clip: text; background-clip: text; color: transparent;
    filter: drop-shadow(0 0 12px rgba(53, 190, 255, 0.3));
}
.solution-content h3 { color: var(--text-heading); font-size: 22px; margin-bottom: 10px; }
.solution-content p { color: var(--text-muted); font-size: 14px; margin-bottom: 14px; }
.solution-tags { display: flex; gap: 8px; flex-wrap: wrap; }
.solution-tags span {
    font-size: 12px; padding: 5px 14px; border-radius: 50px; background: rgba(77, 127, 255, 0.08);
    color: var(--accent); border: 1px solid rgba(53, 220, 255, 0.25); font-family: var(--mono);
}

/* 研究模型 10 步 */
.model-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 46px 40px; box-shadow: var(--shadow); backdrop-filter: blur(12px); }
.model-steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; }
.model-step {
    background: rgba(125, 165, 255, 0.05); border: 1px solid var(--border); border-radius: 12px;
    padding: 20px 12px; text-align: center; transition: var(--transition);
}
.model-step:hover {
    background: linear-gradient(160deg, rgba(77, 127, 255, 0.14), rgba(53, 220, 255, 0.10));
    border-color: rgba(125, 165, 255, 0.45); transform: translateY(-4px); box-shadow: 0 10px 26px rgba(38, 84, 220, 0.3);
}
.model-step b {
    display: block; color: var(--accent); font-size: 22px; margin-bottom: 6px; font-family: var(--mono);
    text-shadow: 0 0 14px rgba(53, 220, 255, 0.5);
}
.model-step span { font-size: 13px; color: var(--text); }
.model-note {
    margin-top: 24px; padding: 18px 24px; border-radius: 12px; background: rgba(53, 220, 255, 0.06);
    border: 1px solid rgba(53, 220, 255, 0.25); font-size: 14px; color: var(--text);
}

/* 定量定性应用 */
.app-tabs { display: flex; gap: 10px; justify-content: center; margin-bottom: 36px; }
.app-tabs button {
    padding: 10px 26px; border-radius: 50px; border: 1px solid var(--border-strong);
    background: rgba(15, 28, 58, 0.5); color: var(--text); font-size: 14px; font-weight: 600; transition: var(--transition);
}
.app-tabs button.active { background: var(--grad-brand); color: #04101f; border-color: transparent; box-shadow: 0 6px 22px rgba(53, 170, 255, 0.45); }
.app-panel { display: none; }
.app-panel.active { display: block; animation: fadeIn 0.5s ease; }

/* ---------- 质量控制 ---------- */
.quality-process { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.quality-step {
    background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 30px 24px; text-align: center; position: relative; transition: var(--transition); backdrop-filter: blur(12px);
}
.quality-step:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); border-color: rgba(125, 165, 255, 0.4); }
.quality-icon {
    width: 62px; height: 62px; margin: 0 auto 16px; border-radius: 18px; font-size: 28px;
    background: linear-gradient(135deg, rgba(77, 127, 255, 0.16), rgba(53, 220, 255, 0.12));
    border: 1px solid rgba(125, 165, 255, 0.22); display: flex; align-items: center; justify-content: center;
}
.quality-step h4 { color: var(--text-heading); font-size: 16px; margin-bottom: 8px; }
.quality-step p { font-size: 13px; color: var(--text-muted); }

.quality-arch { display: flex; align-items: stretch; justify-content: center; flex-wrap: wrap; }
.arch-item {
    background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 26px 20px; text-align: center; width: 210px; transition: var(--transition); backdrop-filter: blur(12px);
}
.arch-item:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); border-color: rgba(125, 165, 255, 0.4); }
.arch-item .level {
    font-size: 30px; font-weight: 800; font-family: var(--mono);
    background: var(--grad-brand); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.arch-item h4, .arch-item h3 { color: var(--text-heading); font-size: 16px; margin: 8px 0; }
.arch-item p { font-size: 13px; color: var(--text-muted); }
.arch-icon { font-size: 40px; display: block; margin-bottom: 10px; }
.arch-arrow { display: flex; align-items: center; color: var(--accent); font-size: 24px; padding: 0 8px; text-shadow: 0 0 12px rgba(53, 220, 255, 0.7); }

.qc-depts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.qc-dept {
    background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 30px 26px; transition: var(--transition); backdrop-filter: blur(12px);
}
.qc-dept:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: rgba(125, 165, 255, 0.4); }
.qc-dept h4 { color: var(--text-heading); font-size: 17px; margin-bottom: 10px; }
.qc-dept p { font-size: 13px; color: var(--text-muted); }

.quality-std { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.quality-std-card {
    background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 28px 26px; transition: var(--transition); backdrop-filter: blur(12px);
}
.quality-std-card:hover { box-shadow: var(--shadow-hover); border-color: rgba(125, 165, 255, 0.4); transform: translateY(-4px); }
.quality-std-card h4 { color: var(--text-heading); font-size: 16px; margin-bottom: 8px; }
.quality-std-card p { font-size: 13px; color: var(--text-muted); }

/* ---------- 出海调研 ---------- */
.or-card {
    background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 36px 32px; box-shadow: var(--shadow); backdrop-filter: blur(12px);
}
.or-card h3 { color: var(--text-heading); font-size: 22px; margin-bottom: 16px; position: relative; padding-left: 16px; }
.or-card h3::before { content: ''; position: absolute; left: 0; top: 6px; bottom: 6px; width: 5px; border-radius: 5px; background: var(--grad-brand); box-shadow: 0 0 10px rgba(53, 220, 255, 0.7); }
.or-card p { color: var(--text-muted); font-size: 14px; margin-bottom: 24px; }
.or-tags { display: flex; gap: 10px; flex-wrap: wrap; }
.or-tags span {
    padding: 8px 16px; border-radius: 50px; background: rgba(77, 127, 255, 0.08);
    border: 1px solid rgba(53, 220, 255, 0.25); font-size: 13px; color: var(--accent); font-weight: 600; font-family: var(--mono);
}

.strategy-pyramid { max-width: 760px; margin: 0 auto; }
.pyramid-level {
    border-radius: 14px; margin-bottom: 12px; padding: 22px 30px; display: flex; justify-content: space-between;
    align-items: center; background: var(--card); border: 1px solid var(--border); transition: var(--transition);
    backdrop-filter: blur(12px);
}
.pyramid-level:hover { transform: translateX(8px); box-shadow: var(--shadow-hover); border-color: rgba(125, 165, 255, 0.4); }
.pyramid-level b { color: var(--accent); font-size: 15px; }
.pyramid-level span { color: var(--text); font-size: 14px; text-align: right; }
.pyramid-level.lv1 { margin-inline: 16%; }
.pyramid-level.lv2 { margin-inline: 10%; }
.pyramid-level.lv3 { margin-inline: 4%; }

/* ---------- 联系我们 ---------- */
.contact-layout { display: grid; grid-template-columns: 1.5fr 1fr; gap: 40px; align-items: start; }
.contact-right {
    background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 40px; box-shadow: var(--shadow); backdrop-filter: blur(12px);
}
.contact-right h3 { color: var(--text-heading); font-size: 20px; margin-bottom: 18px; position: relative; padding-left: 14px; }
.contact-right h3::before { content: ''; position: absolute; left: 0; top: 5px; bottom: 5px; width: 4px; border-radius: 4px; background: var(--grad-brand); box-shadow: 0 0 10px rgba(53, 220, 255, 0.7); }
.contact-form {
    background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 40px; box-shadow: var(--shadow); backdrop-filter: blur(12px);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; color: var(--text-heading); margin-bottom: 8px; font-size: 14px; font-weight: 600; }
.form-group input, .form-group textarea {
    width: 100%; padding: 14px 16px; border-radius: var(--radius-sm); border: 1px solid var(--border-strong);
    background: rgba(7, 13, 30, 0.7); color: var(--text-heading); font-size: 15px; transition: var(--transition); font-family: inherit;
}
.form-group input::placeholder, .form-group textarea::placeholder { color: var(--text-muted); }
.form-group input:focus, .form-group textarea:focus {
    outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(53, 220, 255, 0.16); background: rgba(9, 17, 38, 0.9);
}
.form-message { margin-top: 16px; padding: 14px; border-radius: 8px; display: none; font-size: 14px; }
.form-message.success { display: block; background: rgba(34, 197, 94, 0.12); color: #4ade80; border: 1px solid rgba(74, 222, 128, 0.35); }
.form-message.error { display: block; background: rgba(239, 68, 68, 0.12); color: #f87171; border: 1px solid rgba(248, 113, 113, 0.35); }
.contact-info-side { display: grid; gap: 20px; }
.ci-card {
    display: flex; gap: 16px; background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 24px; transition: var(--transition); box-shadow: var(--shadow); backdrop-filter: blur(12px);
}
.ci-card:hover { border-color: rgba(125, 165, 255, 0.4); transform: translateY(-4px); }
.ci-icon { font-size: 28px; flex-shrink: 0; }
.ci-card h4 { color: var(--text-heading); margin-bottom: 4px; }
.ci-card p { color: var(--text-muted); font-size: 14px; }
.info-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.info-card {
    background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 34px 28px; text-align: center; transition: var(--transition); box-shadow: var(--shadow); backdrop-filter: blur(12px);
}
.info-card:hover { border-color: rgba(125, 165, 255, 0.4); transform: translateY(-5px); box-shadow: var(--shadow-hover); }
.info-icon { font-size: 40px; margin-bottom: 16px; }
.info-card h3 { color: var(--text-heading); font-size: 18px; margin-bottom: 8px; }
.info-card p { color: var(--text-muted); font-size: 14px; }

/* ---------- 内容区通用 ---------- */
.content-box {
    background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 40px; box-shadow: var(--shadow); backdrop-filter: blur(12px);
}
.content-box h3 { color: var(--text-heading); font-size: 20px; margin-bottom: 14px; position: relative; padding-left: 14px; }
.content-box h3::before { content: ''; position: absolute; left: 0; top: 5px; bottom: 5px; width: 4px; border-radius: 4px; background: var(--grad-brand); box-shadow: 0 0 10px rgba(53, 220, 255, 0.7); }
.content-box p { color: var(--text-muted); font-size: 15px; margin-bottom: 12px; }

/* ---------- 补充组件样式 ---------- */

/* 发展历程年份 */
.stage-year {
    width: auto; display: inline-block; padding: 8px 20px; margin: 0 auto 14px; border-radius: 50px;
    background: var(--grad-brand); color: #04101f; font-family: var(--mono);
    font-size: 16px; font-weight: 800; box-shadow: 0 6px 20px rgba(53, 170, 255, 0.45);
}

/* 理念卡片 */
.strategy-item {
    display: flex; gap: 18px; align-items: flex-start; background: var(--card);
    border: 1px solid var(--border); border-radius: var(--radius); padding: 28px 26px;
    transition: var(--transition); margin-bottom: 18px; backdrop-filter: blur(12px);
}
.strategy-item:hover { transform: translateX(8px); box-shadow: var(--shadow-hover); border-color: rgba(125, 165, 255, 0.4); }
.strategy-icon { flex-shrink: 0; font-size: 30px; }
.strategy-item h3 { color: var(--text-heading); font-size: 17px; margin-bottom: 6px; }
.strategy-item p { color: var(--text-muted); font-size: 14px; }

/* 分布条形图 */
.age-bars { display: grid; gap: 12px; }
.age-row { display: grid; grid-template-columns: 110px 1fr 90px; align-items: center; gap: 16px; font-size: 13px; color: var(--text); }
.age-row .bar { height: 14px; border-radius: 50px; background: rgba(125, 165, 255, 0.08); border: 1px solid var(--border); overflow: hidden; }
.age-row .bar i { display: block; height: 100%; border-radius: 50px; background: var(--grad-brand); width: var(--w, 0%); transition: width 1.2s ease; box-shadow: 0 0 12px rgba(53, 220, 255, 0.55); }
.age-row b { text-align: right; color: var(--accent); font-weight: 700; font-size: 13px; font-family: var(--mono); }

/* 小标签 chip */
.chip {
    display: inline-block; font-size: 12px; padding: 5px 14px; border-radius: 50px;
    background: rgba(77, 127, 255, 0.08); color: var(--accent); border: 1px solid rgba(53, 220, 255, 0.25); font-family: var(--mono);
}

/* 解决方案条目 */
.solution-body h3 { color: var(--text-heading); font-size: 22px; margin-bottom: 10px; }
.solution-body p { color: var(--text-muted); font-size: 14px; margin-bottom: 14px; }
.solution-head { display: flex; align-items: center; gap: 14px; margin-bottom: 10px; }
.solution-icon {
    width: 48px; height: 48px; border-radius: 14px; font-size: 22px;
    background: linear-gradient(135deg, rgba(77, 127, 255, 0.16), rgba(53, 220, 255, 0.12));
    border: 1px solid rgba(125, 165, 255, 0.22); display: flex; align-items: center; justify-content: center;
}
.solution-body h3 { margin-bottom: 0; }

/* 板块标题 */
.block-title { color: var(--text-heading); font-size: 24px; font-weight: 700; margin-bottom: 30px; text-align: center; }

/* 质量流程图标 */
.q-icon {
    width: 62px; height: 62px; margin: 0 auto 16px; border-radius: 18px; font-size: 28px;
    background: linear-gradient(135deg, rgba(77, 127, 255, 0.16), rgba(53, 220, 255, 0.12));
    border: 1px solid rgba(125, 165, 255, 0.22); display: flex; align-items: center; justify-content: center;
}

/* 资格认证图标 */
.credential-icon { width: 84px; height: 84px; margin: 0 auto 20px; border-radius: 50%; font-size: 38px; }
.credential-card:hover .credential-icon { border-style: solid; border-color: var(--accent); }

/* 核心优势对比 */
.adv-icon {
    flex-shrink: 0; width: 56px; height: 56px; border-radius: 16px; font-size: 26px;
    background: linear-gradient(135deg, rgba(77, 127, 255, 0.16), rgba(53, 220, 255, 0.12));
    border: 1px solid rgba(125, 165, 255, 0.22); display: flex; align-items: center; justify-content: center;
}
.adv-compare { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 12px; }
.adv-compare div { padding: 12px 14px; border-radius: 10px; background: rgba(125, 165, 255, 0.05); border: 1px solid var(--border); }
.adv-compare div:first-child { background: rgba(53, 220, 255, 0.07); border-color: rgba(53, 220, 255, 0.3); }
.adv-compare b { display: block; font-size: 13px; color: var(--text-heading); margin-bottom: 4px; }
.adv-compare div:first-child b { color: var(--accent); }
.adv-compare span { font-size: 12px; color: var(--text-muted); line-height: 1.7; }

/* 联系布局与信息卡片 */
.contact-left h2 { color: var(--text-heading); font-size: 32px; margin: 12px 0 14px; }
.contact-left > p { color: var(--text-muted); font-size: 15px; margin-bottom: 30px; }
.info-item {
    display: flex; gap: 16px; background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 24px; transition: var(--transition); box-shadow: var(--shadow); backdrop-filter: blur(12px);
}
.info-item:hover { border-color: rgba(125, 165, 255, 0.4); transform: translateY(-4px); }
.info-icon { font-size: 28px; flex-shrink: 0; }
.info-item h4 { color: var(--text-heading); margin-bottom: 4px; font-size: 15px; }
.info-item p { color: var(--text-muted); font-size: 14px; }

/* 全宽按钮 */
.btn-block { display: block; width: 100%; text-align: center; }

/* 联系表单输入 */
form[data-ajax] input, form[data-ajax] select, form[data-ajax] textarea {
    width: 100%; padding: 14px 16px; border-radius: var(--radius-sm); border: 1px solid var(--border-strong);
    background: rgba(7, 13, 30, 0.7); color: var(--text-heading); font-size: 15px; transition: var(--transition);
    font-family: inherit; margin-bottom: 16px; box-sizing: border-box;
}
form[data-ajax] input::placeholder, form[data-ajax] select::placeholder, form[data-ajax] textarea::placeholder { color: var(--text-muted); }
form[data-ajax] input:focus, form[data-ajax] select:focus, form[data-ajax] textarea:focus {
    outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(53, 220, 255, 0.16); background: rgba(9, 17, 38, 0.9);
}

/* 样本分布条形 */
.region-chart { display: grid; gap: 10px; }
.region-chart span {
    position: relative; display: block; font-size: 13px; color: var(--text); padding: 8px 12px;
    background: rgba(125, 165, 255, 0.05); border: 1px solid var(--border); border-radius: 8px; overflow: hidden; z-index: 1;
}
.region-chart span::before {
    content: ''; position: absolute; inset: 0 auto 0 0; width: var(--w, 50%); z-index: -1;
    background: linear-gradient(90deg, rgba(77, 127, 255, 0.30), rgba(53, 220, 255, 0.18));
}

/* 渠道列表文本项（credentials 页） */
.channel-list span {
    display: block; padding: 10px 14px; background: rgba(15, 28, 58, 0.5);
    border: 1px solid var(--border); border-radius: 10px; font-size: 13px; color: var(--text);
}

/* 合作流程步骤（模型步骤） */
.model-step i { font-style: normal; display: block; color: var(--accent); font-size: 22px; font-weight: 800; margin-bottom: 6px; font-family: var(--mono); }
.model-step h4 { color: var(--text-heading); font-size: 14px; margin-bottom: 6px; }
.model-step p { font-size: 12px; color: var(--text-muted); }

/* ============================================================
   顶部滚动进度条
   ============================================================ */
.scroll-progress {
    position: fixed; top: 0; left: 0; height: 2.5px; width: 0; z-index: 1200; pointer-events: none;
    background: var(--grad-brand); box-shadow: 0 0 12px rgba(53, 220, 255, 0.9); transition: width 0.1s linear;
}

/* ============================================================
   多语言切换器
   ============================================================ */
.lang-switch { position: relative; margin-left: 18px; flex: 0 0 auto; }
.lang-switch-btn {
    display: flex; align-items: center; gap: 6px; height: 38px; padding: 0 14px;
    border: 1px solid var(--border-strong); border-radius: 50px; background: rgba(125, 165, 255, 0.07);
    color: #d5e4ff; font-size: 13px; font-weight: 600; cursor: pointer;
    transition: var(--transition); white-space: nowrap;
}
.lang-switch-btn:hover { border-color: var(--accent); color: #fff; box-shadow: 0 0 16px rgba(53, 220, 255, 0.25); }
.lang-switch-btn .lang-flag { font-size: 15px; line-height: 1; display: inline-flex; }
.lang-switch-btn .lang-caret { font-size: 9px; color: var(--text-muted); transition: var(--transition); display: inline-flex; }
.lang-switch.open .lang-switch-btn { border-color: var(--accent); color: #fff; }
.lang-switch.open .lang-caret { transform: rotate(180deg); }
.lang-switch-menu {
    position: absolute; top: calc(100% + 10px); right: 0; z-index: 1000;
    min-width: 178px; padding: 8px; background: rgba(10, 19, 42, 0.97); backdrop-filter: blur(16px);
    border: 1px solid var(--border-strong); border-radius: 14px;
    box-shadow: 0 22px 55px rgba(2, 6, 18, 0.7);
    opacity: 0; visibility: hidden; transform: translateY(-6px);
    transition: var(--transition);
}
.lang-switch.open .lang-switch-menu { opacity: 1; visibility: visible; transform: translateY(0); }
.lang-switch-menu button {
    display: flex; align-items: center; gap: 10px; width: 100%;
    padding: 9px 12px; border: 0; border-radius: 10px; background: transparent;
    color: var(--text); font-size: 13.5px; text-align: left; cursor: pointer;
    transition: var(--transition); font-family: inherit;
}
.lang-switch-menu button:hover { background: rgba(77, 127, 255, 0.14); color: #fff; }
.lang-switch-menu button.active { background: rgba(53, 220, 255, 0.12); color: var(--accent); font-weight: 700; }
.lang-switch-menu button .lang-flag { font-size: 15px; display: inline-flex; }
.lang-switch-menu button .lang-check { margin-left: auto; font-size: 12px; color: var(--accent); display: inline-flex; }

/* 移动端导航中的语言列表 */
.mobile-nav .mobile-langs { padding: 16px 8px 0; border-bottom: 0; }
.mobile-nav .mobile-langs-title {
    display: flex; align-items: center; gap: 6px; padding: 0 0 10px; font-size: 13px; color: var(--text-muted);
    font-weight: 600; border-bottom: 0;
}
.mobile-nav .mobile-lang-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; }
.mobile-nav .mobile-lang-list button {
    display: flex; align-items: center; justify-content: center; gap: 6px;
    padding: 10px 8px; border: 1px solid var(--border-strong); border-radius: 10px;
    background: rgba(125, 165, 255, 0.05); color: var(--text); font-size: 13px; font-family: inherit; cursor: pointer;
}
.mobile-nav .mobile-lang-list button.active { border-color: var(--accent); color: var(--accent); font-weight: 700; background: rgba(53, 220, 255, 0.08); }

@media (max-width: 900px) { .lang-switch { display: none; } }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1024px) {
    .omni-grid, .feature-grid, .overseas-grid, .app-grid { grid-template-columns: repeat(2, 1fr); }
    .case-grid, .team-grid, .credentials-grid, .channel-list, .method-grid, .industry-grid, .region-grid, .qc-depts { grid-template-columns: repeat(2, 1fr); }
    .model-steps { grid-template-columns: repeat(3, 1fr); }
    .partners-grid { grid-template-columns: repeat(3, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .hero-content h1 { font-size: 42px; }
}
@media (max-width: 900px) {
    .nav { display: none; }
    .hero-tech { display: none; }
    .mobile-menu-btn { display: flex; }
    .about-grid, .company-layout { grid-template-columns: 1fr; }
    .case-card, .case-detail { grid-template-columns: 1fr; }
    .case-detail-img { min-height: 280px; }
    .case-detail-info { padding: 30px; }
    .contact-layout { grid-template-columns: 1fr; }
    .quality-process { grid-template-columns: repeat(2, 1fr); }
    .quality-std { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
    .section { padding: 60px 0; }
    .section-title h2 { font-size: 28px; }
    .hero-content h1 { font-size: 32px; }
    .hero-content p { font-size: 15px; }
    .hero-stat { padding: 16px 20px; }
    .hero-stat b { font-size: 24px; }
    .stats-bar { grid-template-columns: repeat(2, 1fr); }
    .omni-grid, .feature-grid, .overseas-grid, .app-grid { grid-template-columns: 1fr; }
    .case-grid, .team-grid, .credentials-grid, .channel-list, .method-grid, .industry-grid, .region-grid, .qc-depts, .info-grid { grid-template-columns: 1fr; }
    .partners-grid { grid-template-columns: repeat(2, 1fr); }
    .model-steps { grid-template-columns: repeat(2, 1fr); }
    .form-row { grid-template-columns: 1fr; }
    .page-hero h1 { font-size: 34px; }
    .page-hero { padding: 120px 0 60px; }
    .case-info { padding: 26px; }
    .case-points { grid-template-columns: 1fr; }
    .cta-box { padding: 50px 24px; }
    .solution-item { grid-template-columns: 1fr; gap: 14px; }
    .footer-grid { grid-template-columns: 1fr; }
    .mission-cards { grid-template-columns: 1fr; }
    .float-tools a { width: 42px; height: 42px; }
    .adv-compare { grid-template-columns: 1fr; }
    .age-row { grid-template-columns: 70px 1fr 70px; gap: 10px; font-size: 12px; }
    .info-grid { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
    .hero-slider::before, .hero-slider::after, .orbit-ring, .cta-box::before, .particle { animation: none !important; }
}