/* ============================================================
   RLRS Studio · 设计系统
   REMIX LASER RAISING STUDIO
   深色玻璃拟态 + 金色激光粒子
   ============================================================ */

:root {
    --bg: #0a0c10;
    --gold: #ffd700;
    --gold-2: #f7971e;
    --mint: #64ffda;
    --text: #e8edf5;
    --text-dim: rgba(255, 255, 255, 0.52);
    --text-faint: rgba(255, 255, 255, 0.32);
    --text-ghost: rgba(255, 255, 255, 0.2);
    --card-bg: rgba(255, 255, 255, 0.04);
    --card-bg-hover: rgba(255, 255, 255, 0.06);
    --card-border: rgba(255, 255, 255, 0.06);
    --gold-border: rgba(255, 215, 0, 0.18);
    --radius-lg: 40px;
    --radius-md: 28px;
    --radius-sm: 18px;
    --radius-pill: 60px;
    --shadow-card: 0 32px 80px rgba(0, 0, 0, 0.6);
    --shadow-hover: 0 20px 60px rgba(0, 0, 0, 0.45);
    --ease: cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

html {
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
    /* clip 仅裁切横向溢出,不创建滚动容器,sticky 不受影响 */
    overflow-x: clip;
}

body {
    font-family: 'Segoe UI', system-ui, -apple-system, 'PingFang SC',
        'Microsoft YaHei', sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    position: relative;
    -webkit-font-smoothing: antialiased;
}

#particles-canvas {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

.page {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px 90px;
    box-sizing: border-box;
}

/* ---------- 导航栏 ---------- */
.nav-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 4px 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    margin-bottom: 28px;
    flex-wrap: wrap;
    gap: 10px;
}

.nav-bar a {
    color: var(--text-faint);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.25s;
}

.nav-bar a:hover {
    color: var(--gold);
}

.nav-bar .brand {
    color: var(--text-dim);
    font-weight: 600;
    font-size: 15px;
}

.nav-bar .brand span {
    color: var(--gold);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 18px;
    flex-wrap: wrap;
}

/* ---------- 卡片 / Hero ---------- */
.card {
    background: var(--card-bg);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-radius: var(--radius-lg);
    border: 1px solid var(--card-border);
    box-shadow: var(--shadow-card);
    text-align: center;
    animation: fadeUp 0.8s ease-out both;
    padding: 40px 36px;
}

/* Hero 改为开放式中置，让产品视觉成为主体（大厂产品页范式） */
.hero {
    text-align: center;
    padding: 44px 0 6px;
    margin-bottom: 16px;
    animation: fadeUp 0.8s ease-out both;
}

/* ---------- 徽章 / 标签 ---------- */
.badge {
    display: inline-block;
    background: rgba(255, 215, 0, 0.12);
    color: var(--gold);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    padding: 6px 18px;
    border-radius: var(--radius-pill);
    border: 1px solid rgba(255, 215, 0, 0.15);
    margin-bottom: 24px;
}

.badge.mint {
    background: rgba(100, 255, 218, 0.08);
    color: var(--mint);
    border-color: rgba(100, 255, 218, 0.12);
}

/* ---------- Logo 与品牌层级 ---------- */
.logo {
    font-size: 72px;
    font-weight: 800;
    letter-spacing: -2px;
    line-height: 1;
    background: linear-gradient(135deg, #f7971e, #ffd200, #f7971e);
    background-size: 200% 200%;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: shimmer 4s ease-in-out infinite;
    margin-bottom: 10px;
}

.brand-full {
    color: var(--text-faint);
    font-size: 13px;
    letter-spacing: 3px;
    font-weight: 500;
    text-transform: uppercase;
    margin-bottom: 6px;
}

.logo-sub {
    color: var(--text-ghost);
    font-size: 14px;
    letter-spacing: 4px;
    font-weight: 400;
    margin-bottom: 22px;
}

/* ---------- 标语 / 描述 ---------- */
.tagline {
    color: var(--text);
    font-size: 30px;
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 8px;
}

.tagline span {
    background: linear-gradient(135deg, #ffd700, #ff8c00);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.desc {
    color: var(--text-dim);
    font-size: 16px;
    line-height: 1.7;
    max-width: 460px;
    margin: 12px auto 28px;
}

/* ---------- 状态条 ---------- */
.status {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: rgba(100, 255, 218, 0.06);
    padding: 10px 28px;
    border-radius: var(--radius-pill);
    border: 1px solid rgba(100, 255, 218, 0.12);
    margin-bottom: 32px;
}

.status-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--mint);
    animation: pulseDot 2s ease-in-out infinite;
}

.status-text {
    color: var(--mint);
    font-size: 15px;
    font-weight: 500;
    letter-spacing: 0.5px;
}

.status-text small {
    color: var(--text-faint);
    font-weight: 400;
    font-size: 13px;
}

/* ---------- 按钮 ---------- */
.actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 14px;
    margin-bottom: 36px;
}

.btn {
    padding: 14px 40px;
    border-radius: var(--radius-pill);
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s var(--ease);
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn-primary {
    background: linear-gradient(135deg, #ffd700, #f7971e);
    color: #0a0c10;
    box-shadow: 0 8px 32px rgba(255, 215, 0, 0.2);
}

.btn-primary:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 12px 48px rgba(255, 215, 0, 0.35);
}

.btn-ghost {
    background: rgba(255, 255, 255, 0.04);
    color: #ccd6f6;
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.btn-ghost:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--gold-border);
    transform: translateY(-3px);
}

.btn.disabled {
    background: rgba(255, 255, 255, 0.04);
    color: var(--text-faint);
    border: 1px solid rgba(255, 255, 255, 0.06);
    cursor: not-allowed;
    pointer-events: none;
}

/* ---------- 社交链接 ---------- */
.socials {
    display: flex;
    justify-content: center;
    gap: 20px;
    padding-top: 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    flex-wrap: wrap;
}

.socials a {
    color: var(--text-ghost);
    font-size: 14px;
    text-decoration: none;
    transition: color 0.25s;
    letter-spacing: 0.5px;
}

.socials a:hover {
    color: var(--gold);
}

/* ---------- 页脚 ---------- */
.footer {
    margin-top: 24px;
    color: var(--text-ghost);
    font-size: 12px;
    letter-spacing: 1px;
    text-align: center;
}

.footer a {
    color: var(--text-faint);
    text-decoration: none;
    transition: color 0.25s;
}

.footer a:hover {
    color: rgba(255, 215, 0, 0.6);
}

/* ---------- 区块标题 ---------- */
.section-title {
    text-align: center;
    color: var(--text-dim);
    font-size: 18px;
    font-weight: 600;
    letter-spacing: 2px;
    margin: 0 0 20px;
}

/* ---------- 双列卡片网格 ---------- */
.grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.product-card {
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-radius: var(--radius-md);
    border: 1px solid var(--card-border);
    padding: 36px 28px 32px;
    text-decoration: none;
    transition: all 0.35s var(--ease);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    animation: fadeUp 0.8s ease-out both;
}

.product-card:hover {
    transform: translateY(-6px);
    border-color: var(--gold-border);
    background: var(--card-bg-hover);
    box-shadow: var(--shadow-hover);
}

.product-card .icon {
    font-size: 40px;
    margin-bottom: 12px;
    line-height: 1;
}

.product-card h3 {
    color: var(--text);
    font-size: 22px;
    font-weight: 700;
    letter-spacing: -0.3px;
}

.product-card .platform {
    color: var(--text-ghost);
    font-size: 13px;
    letter-spacing: 2px;
    margin-top: 2px;
}

.product-card .desc {
    color: var(--text-dim);
    font-size: 14px;
    line-height: 1.6;
    margin: 12px 0 18px;
    flex: 1;
}

.status-badge {
    display: inline-block;
    padding: 6px 20px;
    border-radius: var(--radius-pill);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.5px;
}

.status-badge.ready {
    background: rgba(100, 255, 218, 0.08);
    color: var(--mint);
    border: 1px solid rgba(100, 255, 218, 0.1);
}

.status-badge.building {
    background: rgba(255, 215, 0, 0.06);
    color: var(--gold);
    border: 1px solid rgba(255, 215, 0, 0.08);
}

.btn-hint {
    margin-top: 14px;
    color: var(--text-ghost);
    font-size: 13px;
    transition: color 0.25s;
}

.product-card:hover .btn-hint {
    color: rgba(255, 215, 0, 0.5);
}

/* ---------- 下载页 hero 细节 ---------- */
.hero h1 {
    font-size: 48px;
    font-weight: 800;
    letter-spacing: -1px;
    line-height: 1.1;
    background: linear-gradient(135deg, #ffd700, #f7971e);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 6px;
}

.hero .sub {
    color: var(--text-ghost);
    font-size: 14px;
    letter-spacing: 4px;
    font-weight: 300;
    margin-bottom: 16px;
}

.meta-tags {
    display: flex;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 24px;
}

.meta-tag {
    display: inline-block;
    padding: 6px 16px;
    border-radius: var(--radius-pill);
    font-size: 13px;
    font-weight: 500;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.06);
    color: var(--text-dim);
}

/* ---------- 开发中 / 路线图 ---------- */
.icon-big {
    font-size: 64px;
    display: block;
    margin-bottom: 10px;
    line-height: 1;
}

h1.page-title {
    font-size: 36px;
    font-weight: 800;
    letter-spacing: -0.5px;
    background: linear-gradient(135deg, #ffd700, #f7971e);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.roadmap {
    text-align: left;
    background: rgba(255, 255, 255, 0.02);
    border-radius: 16px;
    padding: 20px 24px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    margin: 16px 0 24px;
}

.roadmap li {
    color: var(--text-dim);
    font-size: 14px;
    line-height: 2;
    list-style: none;
}

.roadmap li::before {
    content: "▸ ";
    color: rgba(255, 215, 0, 0.35);
}

.roadmap li.done {
    color: var(--text-ghost);
    text-decoration: line-through;
}

.roadmap li.done::before {
    content: "✓ ";
    color: var(--mint);
}

/* ---------- 免责声明 ---------- */
.disclaimer {
    margin-top: 24px;
    padding: 16px 20px;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    color: var(--text-faint);
    font-size: 12.5px;
    line-height: 1.7;
    text-align: left;
}

.disclaimer strong {
    color: var(--text-dim);
}

/* ---------- 动画 ---------- */
@keyframes fadeUp {
    0% {
        opacity: 0;
        transform: translateY(36px) scale(0.97);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes shimmer {
    0%,
    100% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
}

@keyframes pulseDot {
    0%,
    100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.4;
        transform: scale(0.8);
    }
}

/* ---------- 响应式 ---------- */
@media (max-width: 640px) {
    .hero {
        padding: 40px 24px 32px;
        border-radius: 32px;
    }
    .card {
        padding: 32px 22px;
        border-radius: 28px;
    }
    .logo {
        font-size: 52px;
    }
    .tagline {
        font-size: 22px;
    }
    .hero h1 {
        font-size: 34px;
    }
    h1.page-title {
        font-size: 28px;
    }
    .icon-big {
        font-size: 48px;
    }
    .btn {
        padding: 12px 28px;
        font-size: 14px;
        width: 100%;
    }
    .actions {
        flex-direction: column;
        align-items: stretch;
    }
    .grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    .product-card {
        padding: 28px 20px 24px;
    }
    .nav-bar {
        justify-content: center;
    }
    .socials {
        gap: 14px;
    }
}

/* ---------- 减少动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.001ms !important;
    }
    .logo {
        animation: none;
    }
}

/* ============================================================
   增强组件 · 专业化改造
   ============================================================ */

/* ---------- 图标 ---------- */
.ico {
    width: 22px;
    height: 22px;
    flex: 0 0 auto;
    display: inline-block;
    vertical-align: middle;
    color: inherit;
    stroke-width: 1.7;
}
.ico-sm { width: 18px; height: 18px; }
.ico-lg { width: 30px; height: 30px; }
.ico-xl { width: 38px; height: 38px; }

/* ---------- 统一顶部导航 ---------- */
.site-nav {
    position: sticky;
    top: 0;
    z-index: 30;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 14px 18px;
    margin: 0 -18px 10px;
    border-radius: 0 0 20px 20px;
    transition: background 0.3s var(--ease), border-color 0.3s var(--ease),
        backdrop-filter 0.3s var(--ease);
    border-bottom: 1px solid transparent;
}
.site-nav.scrolled {
    background: rgba(10, 12, 16, 0.66);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.site-nav .brand {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    color: var(--text);
    text-decoration: none;
    font-size: 16px;
    font-weight: 700;
    letter-spacing: 0.3px;
    white-space: nowrap;
}
.site-nav .brand .mk {
    color: var(--gold);
}
.site-nav .brand .mark-glyph {
    width: 26px;
    height: 26px;
    flex: 0 0 auto;
}
.site-nav .nav-links {
    display: flex;
    align-items: center;
    gap: 4px;
    flex-wrap: wrap;
    justify-content: flex-end;
}
.site-nav .nav-links a.link {
    color: var(--text-dim);
    font-size: 14px;
    text-decoration: none;
    padding: 8px 14px;
    border-radius: var(--radius-pill);
    transition: color 0.25s, background 0.25s;
}
.site-nav .nav-links a.link:hover,
.site-nav .nav-links a.link.active {
    color: var(--text);
    background: rgba(255, 255, 255, 0.05);
}
.site-nav .nav-cta { margin-left: 6px; }

/* ---------- 区块通用 ---------- */
.section {
    margin: 64px 0 0;
}
.section-head {
    text-align: center;
    margin-bottom: 34px;
}
.eyebrow {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--gold);
    margin-bottom: 14px;
}
.section-head h2 {
    font-size: 30px;
    font-weight: 800;
    letter-spacing: -0.5px;
    line-height: 1.2;
}
.section-head .lead {
    color: var(--text-dim);
    font-size: 15px;
    line-height: 1.7;
    max-width: 560px;
    margin: 12px auto 0;
}
.section-title {
    margin: 0 0 22px;
}

/* ---------- 功能亮点网格 ---------- */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
}
.feature {
    background: var(--card-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-md);
    padding: 26px 24px;
    transition: all 0.35s var(--ease);
}
.feature:hover {
    transform: translateY(-5px);
    border-color: var(--gold-border);
    box-shadow: 0 18px 50px rgba(0, 0, 0, 0.4);
}
.feature .f-ico {
    width: 46px;
    height: 46px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 13px;
    background: rgba(255, 215, 0, 0.1);
    color: var(--gold);
    margin-bottom: 16px;
}
.feature h3 {
    color: var(--text);
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 8px;
}
.feature p {
    color: var(--text-dim);
    font-size: 14px;
    line-height: 1.65;
}

/* ---------- 产品展示卡（落地页） ---------- */
.product-showcase {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 22px;
}
.product-card-lg {
    display: flex;
    flex-direction: column;
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    padding: 30px 28px 26px;
    text-decoration: none;
    transition: all 0.35s var(--ease);
    position: relative;
    overflow: hidden;
}
.product-card-lg::before {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(120% 80% at 100% 0%, rgba(255, 215, 0, 0.07), transparent 60%);
    opacity: 0;
    transition: opacity 0.35s var(--ease);
    pointer-events: none;
}
.product-card-lg:hover {
    transform: translateY(-6px);
    border-color: var(--gold-border);
    box-shadow: var(--shadow-hover);
}
.product-card-lg:hover::before { opacity: 1; }
.product-card-lg .pc-top {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 18px;
}
.product-card-lg .pc-icon {
    width: 54px;
    height: 54px;
    flex: 0 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 15px;
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.16), rgba(247, 151, 30, 0.1));
    color: var(--gold);
}
.product-card-lg h3 {
    color: var(--text);
    font-size: 21px;
    font-weight: 700;
}
.product-card-lg .pc-sub {
    color: var(--text-faint);
    font-size: 12px;
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-top: 2px;
}
.product-card-lg .pc-desc {
    color: var(--text-dim);
    font-size: 14px;
    line-height: 1.65;
    margin-bottom: 18px;
}
.product-card-lg ul.pc-points {
    list-style: none;
    margin: 0 0 20px;
    padding: 0;
    display: grid;
    gap: 9px;
    flex: 1;
}
.product-card-lg ul.pc-points li {
    display: flex;
    align-items: flex-start;
    gap: 9px;
    color: var(--text-dim);
    font-size: 13.5px;
    line-height: 1.5;
}
.product-card-lg ul.pc-points li .ck {
    color: var(--mint);
    flex: 0 0 auto;
    margin-top: 1px;
}
.product-card-lg .pc-foot {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}
.product-card-lg .pc-enter {
    margin-left: auto;
    color: var(--gold);
    font-size: 14px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: gap 0.25s var(--ease);
}
.product-card-lg:hover .pc-enter { gap: 11px; }

/* ---------- 交互预览外框 ---------- */
.showcase {
    margin-top: 22px;
}
.showcase-frame {
    position: relative;
    border-radius: var(--radius-lg);
    border: 1px solid var(--card-border);
    background: #0f1115;
    overflow: hidden;
    box-shadow: var(--shadow-card);
}
.showcase-bar {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 11px 16px;
    background: rgba(255, 255, 255, 0.03);
    border-bottom: 1px solid var(--card-border);
}
.showcase-bar .dots { display: flex; gap: 7px; }
.showcase-bar .dots i {
    width: 11px; height: 11px; border-radius: 50%;
    background: rgba(255, 255, 255, 0.16); display: block;
}
.showcase-bar .dots i:nth-child(1) { background: #ff5f57; }
.showcase-bar .dots i:nth-child(2) { background: #febc2e; }
.showcase-bar .dots i:nth-child(3) { background: #28c840; }
.showcase-bar .u {
    flex: 1;
    font-size: 12px;
    color: var(--text-faint);
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--card-border);
    border-radius: 7px;
    padding: 5px 12px;
    text-align: center;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.showcase-frame iframe {
    display: block;
    width: 100%;
    height: 640px;
    border: 0;
    background: #0f1115;
}
.showcase-note {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    flex-wrap: wrap;
    margin-top: 14px;
    color: var(--text-faint);
    font-size: 13px;
}
.showcase-note a {
    color: var(--gold);
    text-decoration: none;
    font-weight: 600;
}
.showcase-note a:hover { text-decoration: underline; }

/* ---------- 信任背书数据条 ---------- */
.stat-strip {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-top: 22px;
}
.stat {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-md);
    padding: 24px 18px;
    text-align: center;
}
.stat .num {
    font-size: 30px;
    font-weight: 800;
    letter-spacing: -0.5px;
    background: linear-gradient(135deg, #ffd700, #f7971e);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}
.stat .lbl {
    color: var(--text-dim);
    font-size: 13px;
    margin-top: 6px;
    letter-spacing: 0.5px;
}

/* ---------- 统一页脚 ---------- */
.site-footer {
    margin-top: 80px;
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1fr 1fr;
    gap: 30px;
    margin-bottom: 32px;
}
.footer-brand .fb-logo {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    font-weight: 700;
    font-size: 16px;
    color: var(--text);
    margin-bottom: 12px;
}
.footer-brand .fb-logo .mk { color: var(--gold); }
.footer-brand p {
    color: var(--text-faint);
    font-size: 13px;
    line-height: 1.7;
    max-width: 280px;
}
.footer-col h4 {
    color: var(--text-dim);
    font-size: 12px;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    margin-bottom: 14px;
    font-weight: 600;
}
.footer-col a {
    display: block;
    color: var(--text-faint);
    font-size: 13.5px;
    text-decoration: none;
    padding: 5px 0;
    transition: color 0.25s;
}
.footer-col a:hover { color: var(--gold); }
.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    flex-wrap: wrap;
    padding-top: 22px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    color: var(--text-ghost);
    font-size: 12px;
    letter-spacing: 0.5px;
}
.footer-bottom a { color: var(--text-faint); text-decoration: none; transition: color 0.25s; }
.footer-bottom a:hover { color: rgba(255, 215, 0, 0.6); }
.footer-socials { display: flex; gap: 16px; }
.footer-socials a { color: var(--text-ghost); text-decoration: none; transition: color 0.25s; }
.footer-socials a:hover { color: var(--gold); }

/* ---------- 下载页辅助 ---------- */
.sysreq {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
    margin-top: 18px;
}
.sysreq .sr-item {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-sm);
    padding: 16px 18px;
}
.sysreq .sr-item .k {
    color: var(--text-faint);
    font-size: 12px;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 6px;
}
.sysreq .sr-item .v {
    color: var(--text);
    font-size: 15px;
    font-weight: 600;
}

/* ---------- 移动端退化：预览 iframe 改链接 ---------- */
@media (max-width: 720px) {
    .showcase-frame iframe { height: 460px; }
}
@media (max-width: 560px) {
    .feature-grid { grid-template-columns: 1fr; }
    .product-showcase { grid-template-columns: 1fr; }
    .stat-strip { grid-template-columns: 1fr 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .sysreq { grid-template-columns: 1fr; }
    .section-head h2 { font-size: 24px; }
    .site-nav { padding: 12px 10px; margin: 0 -10px 8px; }
    .site-nav .nav-links a.link { padding: 7px 10px; font-size: 13px; }
}

/* ============================================================
   大厂级产品页增强
   背景辉光 · 滚动揭示 · Hero 产品实拍 · 交替分栏 · 窗口样机 · CTA 带
   ============================================================ */

/* ---------- 背景极光辉光 ---------- */
body::before {
    content: "";
    position: fixed;
    inset: -25% -10% auto -10%;
    height: 75vh;
    z-index: 0;
    pointer-events: none;
    background:
        radial-gradient(38% 48% at 18% 0%, rgba(247, 151, 30, 0.16), transparent 70%),
        radial-gradient(40% 50% at 82% 8%, rgba(255, 215, 0, 0.11), transparent 70%);
    filter: blur(10px);
}

/* ---------- 滚动揭示（IntersectionObserver 触发） ---------- */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
    will-change: opacity, transform;
}
.reveal.in {
    opacity: 1;
    transform: none;
}
.reveal[data-delay="1"] { transition-delay: 0.09s; }
.reveal[data-delay="2"] { transition-delay: 0.18s; }
.reveal[data-delay="3"] { transition-delay: 0.27s; }

/* ---------- Hero 产品实拍（全宽浏览器外框） ---------- */
.hero-shot {
    margin: 14px 0 4px;
}
.hero-shot .showcase-frame {
    box-shadow: var(--shadow-card), 0 0 0 1px rgba(255, 215, 0, 0.06);
}
.hero-shot-cap {
    text-align: center;
    color: var(--text-faint);
    font-size: 13px;
    margin-top: 14px;
    letter-spacing: 0.5px;
}
.hero-shot-cap a { color: var(--gold); text-decoration: none; font-weight: 600; }
.hero-shot-cap a:hover { text-decoration: underline; }

/* ---------- 交替分栏（图文左右） ---------- */
.split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 52px;
    align-items: center;
    margin: 78px 0 0;
}
.split.rev .split-visual { order: -1; }
.split-text .eyebrow { display: block; }
.split-text h2 {
    font-size: 28px;
    font-weight: 800;
    letter-spacing: -0.5px;
    line-height: 1.22;
    margin: 12px 0 14px;
}
.split-text p {
    color: var(--text-dim);
    font-size: 15px;
    line-height: 1.78;
}
.split-text ul {
    list-style: none;
    margin: 20px 0 0;
    padding: 0;
    display: grid;
    gap: 12px;
}
.split-text ul li {
    display: flex;
    align-items: flex-start;
    gap: 11px;
    color: var(--text-dim);
    font-size: 14.5px;
    line-height: 1.6;
}
.split-text ul li .ck {
    color: var(--mint);
    flex: 0 0 auto;
    margin-top: 2px;
}

/* ---------- 窗口样机（装饰性 UI 片段） ---------- */
.win {
    background: #0f1115;
    border: 1px solid var(--card-border);
    border-radius: 18px;
    overflow: hidden;
    box-shadow: var(--shadow-card);
}
.win-bar {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 11px 14px;
    background: rgba(255, 255, 255, 0.03);
    border-bottom: 1px solid var(--card-border);
}
.win-bar .dots { display: flex; gap: 6px; }
.win-bar .dots i { width: 10px; height: 10px; border-radius: 50%; background: rgba(255, 255, 255, 0.16); display: block; }
.win-bar .dots i:nth-child(1) { background: #ff5f57; }
.win-bar .dots i:nth-child(2) { background: #febc2e; }
.win-bar .dots i:nth-child(3) { background: #28c840; }
.win-bar .t { color: var(--text-faint); font-size: 12px; margin-left: 6px; letter-spacing: 0.3px; }
.win-body { padding: 18px; display: grid; gap: 12px; }
.win-row { display: flex; align-items: center; gap: 12px; }
.win-chip {
    font-size: 11px;
    padding: 3px 10px;
    border-radius: 999px;
    background: rgba(255, 215, 0, 0.1);
    color: var(--gold);
    border: 1px solid rgba(255, 215, 0, 0.15);
    white-space: nowrap;
}
.win-chip.mint { background: rgba(100, 255, 218, 0.08); color: var(--mint); border-color: rgba(100, 255, 218, 0.12); }
.win-chip.red { background: rgba(255, 90, 90, 0.1); color: #ff7a7a; border-color: rgba(255, 90, 90, 0.18); }
.win-line { height: 9px; border-radius: 6px; background: rgba(255, 255, 255, 0.07); }
.win-line.s { width: 55%; }
.win-line.m { width: 78%; }
.win-line.l { width: 94%; }
.win-pill {
    margin-left: auto;
    font-size: 12px;
    padding: 6px 15px;
    border-radius: 999px;
    background: linear-gradient(135deg, #ffd700, #f7971e);
    color: #0a0c10;
    font-weight: 700;
    white-space: nowrap;
}
.win-pill.ghost {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-dim);
    border: 1px solid rgba(255, 255, 255, 0.08);
    font-weight: 600;
}
.win-grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.win-tile {
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 14px;
    background: rgba(255, 255, 255, 0.02);
    display: flex;
    flex-direction: column;
    gap: 9px;
}
.win-tile .tl-ico {
    width: 30px; height: 30px; border-radius: 9px;
    display: flex; align-items: center; justify-content: center;
    background: rgba(255, 215, 0, 0.1); color: var(--gold);
}
.win-tile .tl-t { color: var(--text); font-size: 13px; font-weight: 600; }
.win-tile .tl-d { color: var(--text-faint); font-size: 11px; line-height: 1.5; }

/* ---------- 收尾 CTA 带 ---------- */
.cta-band {
    margin: 84px 0 0;
    border-radius: var(--radius-lg);
    padding: 58px 40px;
    text-align: center;
    background:
        radial-gradient(120% 140% at 50% 0%, rgba(255, 215, 0, 0.14), transparent 60%),
        linear-gradient(135deg, rgba(255, 215, 0, 0.06), rgba(247, 151, 30, 0.03));
    border: 1px solid var(--gold-border);
    position: relative;
    overflow: hidden;
}
.cta-band h2 {
    font-size: 32px;
    font-weight: 800;
    letter-spacing: -0.5px;
    line-height: 1.25;
}
.cta-band p {
    color: var(--text-dim);
    margin: 14px auto 28px;
    max-width: 480px;
    font-size: 15px;
    line-height: 1.7;
}

/* ---------- 移动端退化 ---------- */
@media (max-width: 820px) {
    .split { grid-template-columns: 1fr; gap: 28px; margin: 60px 0 0; }
    .split.rev .split-visual { order: 0; }
}
@media (max-width: 560px) {
    .cta-band { padding: 42px 22px; }
    .cta-band h2 { font-size: 25px; }
}

/* ---------- 减少动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
    .reveal { opacity: 1; transform: none; transition: none; }
}

/* ---------- 语言切换器 ---------- */
.lang-switcher {
    display: inline-flex;
    align-items: center;
    gap: 2px;
    padding: 3px;
    border-radius: var(--radius-pill);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}
.lang-switcher .lang-opt {
    appearance: none;
    border: 0;
    cursor: pointer;
    font: inherit;
    font-size: 12.5px;
    font-weight: 600;
    color: var(--text-dim);
    background: transparent;
    padding: 5px 10px;
    border-radius: var(--radius-pill);
    line-height: 1;
    transition: color 0.22s var(--ease), background 0.22s var(--ease);
    white-space: nowrap;
}
.lang-switcher .lang-opt:hover {
    color: var(--text);
}
.lang-switcher .lang-opt.active {
    color: #1a1400;
    background: linear-gradient(135deg, var(--gold), var(--gold-2));
    box-shadow: 0 4px 14px rgba(255, 215, 0, 0.28);
}
@media (max-width: 640px) {
    .lang-switcher .lang-opt { padding: 5px 8px; font-size: 12px; }
}

/* ---------- 加入页二维码 ---------- */
.qr-row {
    display: flex;
    gap: 22px;
    justify-content: center;
    flex-wrap: wrap;
    margin: 18px 0 6px;
}
.qr-row .qr {
    margin: 0;
    text-align: center;
}
.qr-row .qr img {
    width: 132px;
    height: 132px;
    border-radius: 14px;
    background: #fff;
    padding: 8px;
    box-shadow: 0 8px 26px rgba(0, 0, 0, 0.4);
}
.qr-row .qr figcaption {
    margin-top: 8px;
    font-size: 13px;
    color: var(--text-dim);
}