:root {
    --bg: #ffffff;
    --bg-section: #f8f8fc;
    --bg-card: #ffffff;
    --bg-card-hover: #f4f3ff;
    --text-primary: #1a1a2e;
    --text-secondary: #6b6b80;
    --text-muted: #9e9eb0;
    --nebula: #6c5ce7;
    --nebula-glow: rgba(108,92,231,0.15);
    --stardust: #e17055;
    --stardust-glow: rgba(225,112,85,0.15);
    --starbrain: #00b894;
    --starbrain-glow: rgba(0,184,148,0.15);
    --border: rgba(0,0,0,0.08);
    --shadow: 0 2px 20px rgba(0,0,0,0.06);
    --shadow-hover: 0 8px 40px rgba(0,0,0,0.1);
    --nav-bg: rgba(255,255,255,0.85);
    --stat-bg: #f0eeff;
    --dropdown-bg: #ffffff;
    --dropdown-hover: #f4f3ff;
}

html[data-theme="dark"] {
    --bg: #050510;
    --bg-section: #0a0a1a;
    --bg-card: rgba(255,255,255,0.03);
    --bg-card-hover: rgba(255,255,255,0.06);
    --text-primary: #e8e6f0;
    --text-secondary: #8a8899;
    --text-muted: #55536a;
    --nebula: #7c6ef0;
    --nebula-glow: rgba(124,110,240,0.3);
    --stardust: #f0a85c;
    --stardust-glow: rgba(240,168,92,0.3);
    --starbrain: #5cf0c8;
    --starbrain-glow: rgba(92,240,200,0.3);
    --border: rgba(255,255,255,0.06);
    --shadow: 0 2px 20px rgba(0,0,0,0.3);
    --shadow-hover: 0 8px 40px rgba(0,0,0,0.5);
    --nav-bg: rgba(5,5,16,0.85);
    --stat-bg: rgba(108,92,231,0.08);
    --dropdown-bg: rgba(15,15,30,0.95);
    --dropdown-hover: rgba(255,255,255,0.06);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}
html.reduce-motion {
    scroll-behavior: auto;
}
body {
    background: var(--bg);
    color: var(--text-primary);
    font-family: 'Noto Sans SC', 'Space Grotesk', sans-serif;
    overflow-x: hidden;
    line-height: 1.6;
    transition: background 0.5s, color 0.5s;
}

/* 仅对键盘焦点显示轮廓（Linear / Vercel 类站点常见做法） */
:focus:not(:focus-visible) {
    outline: none;
}
a:focus-visible,
button:focus-visible,
.nav-item-trigger:focus-visible {
    outline: 2px solid var(--nebula);
    outline-offset: 3px;
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ===== 星空 ===== */
.stars {
    position: fixed; inset: 0;
    pointer-events: none; z-index: 0;
    opacity: 1;
    transition: opacity 0.8s;
}
html.reduce-motion .star {
    animation: none;
    opacity: 0.6;
}
.star {
    position: absolute;
    width: 12px; height: 12px;
    background: radial-gradient(circle, hsl(var(--hue), 80%, 55%) 0%, hsla(var(--hue), 80%, 55%, 0.4) 50%, transparent 70%);
    border-radius: 50%;
    filter: blur(1px);
    animation: twinkle var(--dur) ease-in-out infinite;
    opacity: 0;
}
html[data-theme="dark"] .star {
    width: 2px; height: 2px;
    background: white;
    filter: none;
    opacity: 0.7;
}
@keyframes twinkle {
    0%,100% { opacity: 0; }
    50% { opacity: var(--max); }
}

/* ===== 导航 ===== */
.skip-link {
    position: fixed;
    top: 12px;
    left: 12px;
    z-index: 300;
    padding: 10px 16px;
    border-radius: 8px;
    background: var(--nebula);
    color: #fff;
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    transform: translateY(-140%);
    transition: transform 0.2s ease;
}
.skip-link:focus {
    transform: translateY(0);
    outline: 2px solid var(--starbrain);
    outline-offset: 2px;
}

.nav {
    position: fixed; top: 0; left: 0; right: 0; z-index: 100;
    padding: 16px 60px;
    display: flex; justify-content: space-between; align-items: center;
    backdrop-filter: blur(20px);
    background: var(--nav-bg);
    border-bottom: 1px solid var(--border);
    transition: box-shadow 0.35s, background 0.5s, border-color 0.35s;
}
.nav.nav--scrolled {
    box-shadow: var(--shadow);
}
.nav-logo {
    display: flex; align-items: center; gap: 12px;
    text-decoration: none; color: var(--text-primary);
}
.nav-logo-icon {
    width: 36px; height: 36px; border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    overflow: hidden;
    background: transparent;
}
.nav-logo-icon img {
    width: 100%; height: 100%;
    object-fit: cover;
    border-radius: 10px;
}
.nav-logo-icon .logo-light {
    display: block;
}
.nav-logo-icon .logo-dark {
    display: none;
}
html[data-theme="dark"] .nav-logo-icon .logo-light {
    display: none;
}
html[data-theme="dark"] .nav-logo-icon .logo-dark {
    display: block;
}
.nav-logo-text {
    display: flex; align-items: center;
    gap: 8px;
    padding: 6px 12px;
    border-radius: 8px;
    background: var(--bg-card);
    border: 1px solid var(--border);
}
.nav-logo-cn {
    font-family: 'Noto Sans SC', sans-serif;
    font-size: 16px; font-weight: 600;
    background: linear-gradient(135deg, var(--nebula), var(--stardust));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.nav-logo-divider {
    width: 1px; height: 14px;
    background: var(--border);
}
.nav-logo-en {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 14px; font-weight: 500;
    color: var(--text-secondary);
    letter-spacing: 0.5px;
}

/* ===== 导航下拉菜单 ===== */
.nav-center {
    display: flex; gap: 8px; list-style: none;
}
.nav-item {
    position: relative;
}
.nav-item-trigger {
    display: flex; align-items: center; gap: 4px;
    padding: 8px 16px;
    border-radius: 8px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    transition: all 0.3s;
    cursor: pointer;
    border: none;
    background: none;
    font-family: inherit;
}
.nav-item-trigger:hover {
    color: var(--text-primary);
    background: var(--bg-card-hover);
}
.nav-item-trigger .arrow {
    font-size: 10px;
    transition: transform 0.3s;
    margin-left: 2px;
}
.nav-item:hover .nav-item-trigger .arrow {
    transform: rotate(180deg);
}
.nav-dropdown {
    display: block;
    position: absolute;
    top: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%) translateY(-8px);
    min-width: 200px;
    background: var(--dropdown-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 6px;
    box-shadow: var(--shadow-hover);
    z-index: 200;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s;
    transition-delay: 0.1s;
}
.nav-item:hover .nav-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
    transition-delay: 0s;
}
/* 扩大触发区域，防止鼠标移动时消失 */
.nav-dropdown::before {
    content: '';
    position: absolute;
    top: -20px;
    left: 0;
    right: 0;
    height: 20px;
}
@keyframes dropdownIn {
    from { opacity: 0; transform: translateX(-50%) translateY(-8px); }
    to { opacity: 1; transform: translateX(-50%) translateY(0); }
}
@keyframes fadeInDown {
    0% { opacity: 0; margin-top: -8px; }
    100% { opacity: 1; margin-top: 0; }
}
.dropdown-item {
    display: flex; align-items: center; justify-content: space-between;
    padding: 10px 14px;
    border-radius: 8px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    transition: all 0.2s;
    white-space: nowrap;
}
.dropdown-item:hover {
    background: var(--dropdown-hover);
    color: var(--text-primary);
}
.dropdown-item-left {
    display: flex; align-items: center; gap: 10px;
}
.dropdown-item-icon {
    width: 28px; height: 28px;
    border-radius: 7px;
    display: flex; align-items: center; justify-content: center;
    font-size: 14px;
}
.dropdown-item-icon--img {
    padding: 0;
    overflow: hidden;
}
.dropdown-item-icon-img {
    width: 18px;
    height: 18px;
    object-fit: contain;
    display: block;
}
.dropdown-item-label {
    font-size: 14px;
}
.dropdown-item-arrow {
    font-size: 12px;
    color: var(--text-muted);
    opacity: 0;
    transform: translateX(-6px);
    transition: all 0.2s;
}
.dropdown-item:hover .dropdown-item-arrow {
    opacity: 1;
    transform: translateX(0);
}
.dropdown-divider {
    height: 1px;
    background: var(--border);
    margin: 4px 8px;
}

.nav-right {
    display: flex; align-items: center; gap: 12px;
}

/* ===== 主题切换 ===== */
.theme-toggle {
    width: 38px; height: 38px;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: var(--bg-card);
    display: flex; align-items: center; justify-content: center;
    cursor: pointer;
    transition: all 0.3s;
    font-size: 18px;
    position: relative;
    overflow: hidden;
}
.theme-toggle:hover {
    background: var(--bg-card-hover);
}
.theme-icon {
    position: absolute;
    transition: all 0.4s ease;
}
.theme-icon.sun { transform: rotate(0deg) scale(1); opacity: 1; }
.theme-icon.moon { transform: rotate(90deg) scale(0); opacity: 0; }
html[data-theme="dark"] .theme-icon.sun { transform: rotate(-90deg) scale(0); opacity: 0; }
html[data-theme="dark"] .theme-icon.moon { transform: rotate(0deg) scale(1); opacity: 1; }

/* ===== 语言切换 ===== */
.lang-switch {
    position: relative;
    display: flex; align-items: center; gap: 6px;
    padding: 6px 14px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--bg-card);
    color: var(--text-secondary);
    font-size: 13px;
    cursor: pointer;
    transition: all 0.3s;
    user-select: none;
}
.lang-switch:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
}
.lang-switch-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    left: auto !important;
    right: 0 !important;
    min-width: 140px;
    background: var(--dropdown-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow-hover);
    z-index: 200;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.15s ease, visibility 0.15s ease;
}
.lang-switch.open .lang-switch-dropdown {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}
.lang-option {
    display: flex; align-items: center; gap: 10px;
    padding: 10px 16px;
    font-size: 13px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s;
}
.lang-option:hover {
    background: var(--dropdown-hover);
    color: var(--text-primary);
}
.lang-option.active { color: var(--nebula); }
.lang-option-check { margin-left: auto; font-size: 12px; opacity: 0; }
.lang-option.active .lang-option-check { opacity: 1; }

/* ===== 右侧三球站点入口（readme：发光球体 + 产品线标注） ===== */
.product-orbs {
    position: fixed;
    z-index: 92;
    right: max(12px, env(safe-area-inset-right));
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
    pointer-events: none;
}
.product-orbs .product-orb {
    pointer-events: auto;
    display: flex;
    flex-direction: row-reverse;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: inherit;
    transition: opacity 0.2s, transform 0.2s;
}
.product-orbs .product-orb:hover {
    opacity: 0.95;
    transform: translateX(2px);
}
.product-orb-text {
    font-family: 'JetBrains Mono', monospace;
    font-size: 10px;
    font-weight: 500;
    letter-spacing: 0.04em;
    color: var(--text-secondary);
    text-align: left;
    line-height: 1.3;
    max-width: 118px;
    text-shadow: 0 1px 2px var(--bg);
}
html[data-theme="dark"] .product-orb-text {
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.8);
}
.product-orb-sphere {
    flex-shrink: 0;
    width: 42px;
    height: 42px;
    border-radius: 50%;
    position: relative;
    animation: orbGlow 3.2s ease-in-out infinite;
}
html.reduce-motion .product-orb-sphere {
    animation: none;
}
.product-orb--nebula .product-orb-sphere {
    background:
        radial-gradient(circle at 32% 28%, rgba(255, 255, 255, 0.55), transparent 42%),
        linear-gradient(145deg, #a29bfe, #6c5ce7 45%, #4834d4);
    box-shadow:
        0 0 16px rgba(108, 92, 231, 0.55),
        0 0 36px rgba(108, 92, 231, 0.28),
        inset 0 -2px 8px rgba(0, 0, 0, 0.12);
}
.product-orb--stardust .product-orb-sphere {
    background:
        radial-gradient(circle at 32% 28%, rgba(255, 255, 255, 0.5), transparent 42%),
        linear-gradient(145deg, #fab1a0, #e17055 50%, #d63031);
    box-shadow:
        0 0 16px rgba(225, 112, 85, 0.5),
        0 0 34px rgba(225, 112, 85, 0.22),
        inset 0 -2px 8px rgba(0, 0, 0, 0.1);
}
.product-orb--starbrain .product-orb-sphere {
    background:
        radial-gradient(circle at 32% 28%, rgba(255, 255, 255, 0.5), transparent 42%),
        linear-gradient(145deg, #81ecec, #00b894 48%, #00a085);
    box-shadow:
        0 0 16px rgba(0, 184, 148, 0.5),
        0 0 34px rgba(0, 184, 148, 0.22),
        inset 0 -2px 8px rgba(0, 0, 0, 0.1);
}
@keyframes orbGlow {
    0%, 100% { filter: brightness(1); }
    50% { filter: brightness(1.1); }
}

/* ===== Hero（参考 Vercel：大字号 + 网格氛围；暗色下配合星空弱化底纹） ===== */
.hero {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 96px 24px 80px;
    overflow: hidden;
}
.hero-mesh {
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    background:
        radial-gradient(ellipse 90% 55% at 50% -15%, rgba(108, 92, 231, 0.14), transparent 55%),
        radial-gradient(ellipse 50% 45% at 85% 45%, rgba(0, 184, 148, 0.08), transparent 50%),
        radial-gradient(ellipse 45% 40% at 10% 55%, rgba(225, 112, 85, 0.07), transparent 50%);
}
.hero-mesh::after {
    content: '';
    position: absolute;
    inset: -20% -10% 0;
    background-image:
        linear-gradient(rgba(0, 0, 0, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 0, 0, 0.04) 1px, transparent 1px);
    background-size: 56px 56px;
    mask-image: radial-gradient(ellipse 75% 65% at 50% 35%, #000 15%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse 75% 65% at 50% 35%, #000 15%, transparent 70%);
}
html[data-theme="dark"] .hero-mesh {
    opacity: 0.85;
}
html[data-theme="dark"] .hero-mesh::after {
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
}
html.reduce-motion .hero-mesh::after {
    opacity: 0.4;
}
.hero-inner {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: min(920px, 100%);
}
.hero-eyebrow {
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 22px;
    animation: fadeDown 0.75s ease;
}
.hero-badge {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 6px 16px; border-radius: 100px;
    border: 1px solid var(--border);
    background: var(--bg-card);
    font-size: 13px; color: var(--text-secondary);
    margin-bottom: 32px;
    animation: fadeDown 0.8s ease;
    box-shadow: var(--shadow);
}
.hero-badge-dot {
    width: 6px; height: 6px; border-radius: 50%;
    background: var(--starbrain);
    animation: pulse 2s ease infinite;
}
@keyframes pulse {
    0%,100% { box-shadow: 0 0 0 0 var(--starbrain-glow); }
    50% { box-shadow: 0 0 0 8px transparent; }
}
.hero-title {
    font-family: 'Space Grotesk', 'Noto Sans SC', sans-serif;
    font-size: clamp(44px, 7.5vw, 88px);
    font-weight: 700;
    line-height: 1.06;
    letter-spacing: -0.04em;
    margin-bottom: 24px;
    animation: fadeUp 0.8s ease 0.15s both;
}
.hero-title .gradient {
    background: linear-gradient(135deg, var(--nebula), var(--stardust), var(--starbrain));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero-subtitle {
    font-size: clamp(16px, 1.85vw, 21px);
    color: var(--text-secondary);
    max-width: 38rem;
    margin-left: auto;
    margin-right: auto;
    margin-bottom: 44px;
    font-weight: 400;
    line-height: 1.65;
    animation: fadeUp 0.8s ease 0.32s both;
}
.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    justify-content: center;
    animation: fadeUp 0.8s ease 0.48s both;
}
.btn-primary {
    padding: 13px 28px;
    border-radius: 999px;
    background: var(--nebula);
    color: white;
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
    transition: box-shadow 0.25s, transform 0.2s;
    border: none;
    cursor: pointer;
}
.btn-primary:hover {
    box-shadow: 0 0 36px var(--nebula-glow);
    transform: translateY(-1px);
}
.btn-secondary {
    padding: 13px 28px;
    border-radius: 999px;
    background: transparent;
    color: var(--text-primary);
    text-decoration: none;
    font-size: 15px;
    border: 1px solid var(--border);
    transition: background 0.2s, border-color 0.2s, box-shadow 0.2s, transform 0.2s;
    cursor: pointer;
}
.btn-secondary:hover {
    background: var(--bg-card-hover);
    border-color: rgba(108, 92, 231, 0.35);
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
    transform: translateY(-1px);
}
html[data-theme="dark"] .btn-secondary:hover {
    box-shadow: 0 4px 28px rgba(0, 0, 0, 0.35);
}
@keyframes fadeUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeDown {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ===== 信任横条（SaaS 落地页常见 Hero → 条带 → 功能栅格，对应第2步参考） ===== */
.trust-strip {
    position: relative;
    z-index: 1;
    padding: 18px 24px;
    border-top: 1px solid var(--border);
    background: var(--bg);
}
.trust-strip-inner {
    max-width: 1200px;
    margin: 0 auto;
}
.trust-strip-line {
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-muted);
    text-align: center;
    line-height: 1.5;
}

/* ===== 产品线 ===== */
.products {
    position: relative; z-index: 1;
    padding: 96px 60px 120px;
    background: var(--bg-section);
    transition: background 0.5s;
}
.section-header {
    text-align: center; margin-bottom: 72px;
}
.section-label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px;
    color: var(--nebula);
    letter-spacing: 0.28em;
    text-transform: uppercase;
    margin-bottom: 14px;
    opacity: 0.95;
}
.section-title {
    font-size: clamp(32px, 5vw, 52px);
    font-weight: 700; letter-spacing: -2px;
    margin-bottom: 16px;
}
.section-desc {
    font-size: 18px; color: var(--text-secondary);
    max-width: 600px; margin: 0 auto;
}
.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    max-width: 1200px;
    margin: 0 auto;
}
.product-card {
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 44px 32px;
    transition: border-color 0.3s, box-shadow 0.35s, transform 0.35s ease;
    overflow: hidden;
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.04);
}
html[data-theme="dark"] .product-card {
    box-shadow: none;
}
.product-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: var(--card-accent);
    opacity: 0;
    transition: opacity 0.4s;
}
.product-card:hover {
    border-color: rgba(108, 92, 231, 0.22);
    box-shadow: var(--shadow-hover);
    transform: translateY(-4px);
}
html[data-theme="dark"] .product-card:hover {
    border-color: rgba(255, 255, 255, 0.1);
}
.product-card:hover::before { opacity: 1; }
.product-icon {
    width: 56px; height: 56px;
    border-radius: 14px;
    background: var(--card-accent-bg);
    display: flex; align-items: center; justify-content: center;
    font-size: 24px;
    margin-bottom: 24px;
}
.product-icon img.product-icon-img {
    width: 34px;
    height: 34px;
    object-fit: contain;
    display: block;
}
.product-name {
    font-family: 'Space Grotesk', 'Noto Sans SC', sans-serif;
    font-size: 28px; font-weight: 600;
    letter-spacing: -1px; margin-bottom: 4px;
}
.product-name-en {
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px; color: var(--text-muted);
    letter-spacing: 2px; margin-bottom: 16px;
}
.product-desc {
    color: var(--text-secondary);
    font-size: 15px; line-height: 1.7;
    margin-bottom: 28px;
}
.product-features {
    list-style: none;
    display: flex; flex-wrap: wrap; gap: 8px;
    margin-bottom: 32px;
}
.product-features li {
    padding: 4px 12px;
    border-radius: 6px;
    background: var(--bg-section);
    font-size: 12px;
    color: var(--text-secondary);
    border: 1px solid var(--border);
    transition: all 0.3s;
}
.product-link {
    display: inline-flex; align-items: center; gap: 8px;
    color: var(--card-accent);
    text-decoration: none;
    font-size: 14px; font-weight: 500;
    transition: gap 0.3s;
}
.product-link:hover { gap: 14px; }

.product-card.nebula { --card-accent: var(--nebula); --card-accent-bg: rgba(108,92,231,0.1); }
.product-card.stardust { --card-accent: var(--stardust); --card-accent-bg: rgba(225,112,85,0.1); }
.product-card.starbrain { --card-accent: var(--starbrain); --card-accent-bg: rgba(0,184,148,0.1); }

/* ===== 数据 ===== */
.stats {
    position: relative; z-index: 1;
    padding: 80px 60px;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    transition: all 0.5s;
}
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    max-width: 1000px;
    margin: 0 auto;
    text-align: center;
}
.stat-item {
    padding: 32px 20px;
    border-radius: 16px;
    background: var(--stat-bg);
    transition: background 0.5s, opacity 0.55s ease, transform 0.55s ease;
    opacity: 0;
    transform: translateY(12px);
}
.stat-item.stat-item--inview {
    opacity: 1;
    transform: translateY(0);
}
html.reduce-motion .stat-item {
    opacity: 1;
    transform: none;
    transition: background 0.5s;
}
.stat-value {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 48px; font-weight: 700;
    letter-spacing: -2px;
    color: var(--nebula);
    transition: color 0.5s;
}
.stat-label {
    font-size: 14px; color: var(--text-secondary);
    margin-top: 8px;
}

/* ===== 页脚区（深色独立带，与参考站底栏一致） ===== */
.footer-slab {
    position: relative;
    z-index: 2;
    --fs-bg: #000000;
    --fs-text: #ffffff;
    --fs-muted: #888888;
    --fs-line: rgba(255,255,255,0.12);
    --fs-accent: #6c5ce7;
    background: var(--fs-bg);
    color: var(--fs-text);
    transition: color 0.3s;
}

.footer-cta {
    position: relative;
    overflow: hidden;
    padding: 72px 24px 56px;
    text-align: center;
    border-bottom: 1px solid var(--fs-line);
}
.footer-cta-decor {
    position: absolute;
    width: min(420px, 55vw);
    height: min(420px, 55vw);
    pointer-events: none;
    opacity: 0.35;
    background:
        linear-gradient(135deg, transparent 45%, rgba(108,92,231,0.25) 45%, rgba(108,92,231,0.25) 46%, transparent 46%),
        linear-gradient(225deg, transparent 45%, rgba(0,82,217,0.2) 45%, rgba(0,82,217,0.2) 46%, transparent 46%),
        repeating-linear-gradient(90deg, rgba(255,255,255,0.06) 0, rgba(255,255,255,0.06) 1px, transparent 1px, transparent 24px),
        repeating-linear-gradient(0deg, rgba(255,255,255,0.06) 0, rgba(255,255,255,0.06) 1px, transparent 1px, transparent 24px);
    border: 1px solid rgba(255,255,255,0.08);
    transform: rotate(12deg);
}
.footer-cta-decor--tl { top: -35%; left: -12%; }
.footer-cta-decor--tr { top: -38%; right: -14%; transform: rotate(-8deg); }

.footer-cta-inner {
    position: relative;
    max-width: 720px;
    margin: 0 auto;
}
.footer-cta-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    margin-bottom: 20px;
    border-radius: 12px;
    border: 1px solid var(--fs-line);
    font-size: 22px;
    color: var(--fs-text);
    background: rgba(255,255,255,0.04);
}
.footer-cta-title {
    font-family: 'Space Grotesk', 'Noto Sans SC', sans-serif;
    font-size: clamp(22px, 4vw, 34px);
    font-weight: 600;
    letter-spacing: -0.5px;
    line-height: 1.35;
    margin-bottom: 28px;
    color: var(--fs-text);
}
.footer-cta-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 36px;
    border-radius: 999px;
    background: var(--fs-accent);
    color: #fff;
    font-size: 15px;
    font-weight: 500;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    box-shadow: 0 8px 32px rgba(108,92,231,0.35);
}
.footer-cta-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 40px rgba(108,92,231,0.45);
}

.site-footer {
    padding: 56px 24px 0;
}
.footer-main {
    display: grid;
    grid-template-columns: 1.15fr repeat(3, minmax(0, 1fr)) 1.35fr;
    gap: 40px 32px;
    max-width: 1200px;
    margin: 0 auto;
    padding-bottom: 48px;
}
.footer-col-title {
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--fs-muted);
    margin-bottom: 18px;
}
.footer-link-list {
    list-style: none;
}
.footer-link-list li + li { margin-top: 12px; }
.footer-link-list a {
    color: var(--fs-text);
    text-decoration: none;
    font-size: 14px;
    opacity: 0.92;
    transition: opacity 0.2s, color 0.2s;
}
.footer-link-list a:hover {
    opacity: 1;
    color: var(--fs-accent);
}

.footer-col--brand .footer-brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--fs-text);
    margin-bottom: 14px;
}
.footer-brand-logo {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid var(--fs-line);
    flex-shrink: 0;
}
.footer-brand-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}
.footer-brand-text {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    font-size: 16px;
}
.footer-brand-divider {
    opacity: 0.35;
    font-weight: 400;
}
.footer-brand-en {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 500;
    font-size: 15px;
    opacity: 0.85;
}
.footer-brand-tag {
    font-size: 13px;
    color: var(--fs-muted);
    line-height: 1.6;
    max-width: 260px;
}

.footer-col--contact .footer-contact-line {
    font-size: 13px;
    color: var(--fs-muted);
    line-height: 1.65;
    margin-bottom: 8px;
}
.footer-col--contact .footer-contact-line--addr {
    margin-bottom: 20px;
}
.footer-qrs {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-top: 4px;
}
.footer-qr {
    margin: 0;
    text-align: center;
}
.footer-qr img {
    display: block;
    width: 96px;
    height: 96px;
    border-radius: 4px;
    background: #fff;
    padding: 4px;
    box-sizing: border-box;
}
.footer-qr figcaption {
    margin-top: 8px;
    font-size: 12px;
    color: var(--fs-muted);
}

.footer-legal {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 12px 24px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px 24px 28px;
    border-top: 1px solid var(--fs-line);
    font-size: 12px;
    color: var(--fs-muted);
}

/* ===== 右侧浮层 ===== */
.float-dock {
    position: fixed;
    right: 16px;
    bottom: 24px;
    z-index: 150;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 10px;
    pointer-events: none;
}
.float-dock > * {
    pointer-events: auto;
}
.float-dock-card {
    background: rgba(255,255,255,0.96);
    border: 1px solid rgba(0,0,0,0.08);
    border-radius: 14px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.12);
    overflow: hidden;
    min-width: 56px;
}
html[data-theme="dark"] .float-dock-card {
    background: rgba(22,22,34,0.92);
    border-color: rgba(255,255,255,0.1);
    box-shadow: 0 8px 32px rgba(0,0,0,0.45);
}
.float-dock-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    padding: 10px 8px;
    font-size: 11px;
    color: var(--text-secondary);
    text-decoration: none;
    border-bottom: 1px solid var(--border);
    transition: background 0.2s, color 0.2s;
    position: relative;
}
.float-dock-item:last-of-type {
    border-bottom: none;
}
.float-dock-item:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
}
html[data-theme="dark"] .float-dock-item {
    color: #a8a6b8;
    border-bottom-color: rgba(255,255,255,0.08);
}
html[data-theme="dark"] .float-dock-item:hover {
    color: #e8e6f0;
    background: rgba(255,255,255,0.06);
}
.float-dock-item::before {
    font-size: 16px;
    line-height: 1;
    opacity: 0.85;
}
.float-dock-item:nth-child(1)::before { content: '🎧'; }
.float-dock-item:nth-child(2)::before { content: '💬'; }
.float-dock-item:nth-child(3)::before { content: '📋'; }
.float-dock-dot {
    position: absolute;
    top: 6px;
    right: 8px;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: #e74c3c;
    box-shadow: 0 0 0 2px rgba(255,255,255,0.95);
}
html[data-theme="dark"] .float-dock-dot {
    box-shadow: 0 0 0 2px rgba(22,22,34,0.95);
}
.float-dock-top {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: 1px solid rgba(0,0,0,0.08);
    background: rgba(255,255,255,0.96);
    box-shadow: 0 6px 24px rgba(0,0,0,0.1);
    cursor: pointer;
    font-size: 18px;
    line-height: 1;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.2s, box-shadow 0.2s, color 0.2s;
}
.float-dock-top:hover {
    color: var(--nebula);
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(0,0,0,0.14);
}
html[data-theme="dark"] .float-dock-top {
    background: rgba(22,22,34,0.92);
    border-color: rgba(255,255,255,0.1);
    color: #a8a6b8;
}

/* ===== 响应式 ===== */
@media (max-width: 900px) {
    .nav { padding: 14px 24px; }
    .nav-center { display: none; }
    .nav-logo-divider, .nav-logo-en { display: none; }
    .products { padding: 80px 24px; }
    .products-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
    .product-orbs { display: none; }
}

@media (max-width: 768px) {
    .hero {
        padding: 88px 20px 64px;
    }
    .hero-eyebrow {
        letter-spacing: 0.14em;
        font-size: 11px;
    }
    .trust-strip {
        padding: 14px 16px;
    }
    .trust-strip-line {
        font-size: 10px;
        letter-spacing: 0.08em;
    }
    .footer-main {
        grid-template-columns: 1fr;
        gap: 32px;
        padding-bottom: 36px;
    }
    .footer-col--brand { order: -1; }
    .footer-cta { padding: 56px 20px 44px; }
    .footer-cta-decor { opacity: 0.22; }
    .footer-qrs {
        justify-content: flex-start;
    }
    .footer-legal {
        flex-direction: column;
        align-items: flex-start;
        text-align: left;
    }
    .float-dock {
        right: 10px;
        bottom: 16px;
    }
    .float-dock-card {
        min-width: 50px;
        border-radius: 12px;
    }
    .float-dock-item {
        padding: 8px 6px;
        font-size: 10px;
    }
    .float-dock-top {
        width: 40px;
        height: 40px;
        font-size: 16px;
    }
}