/* ===== 全局重置 & 变量 — 橙色主色 ===== */
:root {
    --primary: #ea580c;
    --primary-light: #f97316;
    --primary-dark: #c2410c;
    --primary-glow: rgba(234, 88, 12, 0.18);
    --text-dark: #0f172a;
    --text-muted: #475569;
    --border-light: #e2e8f0;
    --bg-body: #f6f9fc;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.10);
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    --glass-bg: rgba(255, 255, 255, 0.78);
    --glass-blur: blur(16px);
    --transition-smooth: cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.6;
    color: #1e293b;
    background: var(--bg-body);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

.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;
}

/* ===== 按钮 — 橙色主色 ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: #fff;
    padding: 13px 32px;
    border-radius: 60px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s var(--transition-smooth);
    font-size: 1rem;
    border: none;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 18px rgba(234, 88, 12, 0.30);
}
.btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, transparent, rgba(255, 255, 255, 0.20), transparent);
    transform: translateX(-100%);
    transition: transform 0.6s;
}
.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 32px rgba(234, 88, 12, 0.40);
}
.btn:hover::before {
    transform: translateX(100%);
}
.btn-outline {
    background: transparent;
    border: 1.5px solid var(--primary);
    color: var(--primary);
    box-shadow: none;
}
.btn-outline:hover {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 4px 18px rgba(234, 88, 12, 0.30);
}

/* ===== Section 标题 ===== */
.section-header {
    text-align: center;
    margin-bottom: 32px;
}
.section-title {
    font-size: 2.4rem;
    font-weight: 800;
    color: var(--text-dark);
    display: inline-block;
    position: relative;
    letter-spacing: -0.02em;
}
.section-title::after {
    content: '';
    display: block;
    width: 56px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
    border-radius: 4px;
    margin: 10px auto 0;
}
.section-title span {
    color: var(--primary);
}
.section-subtitle {
    text-align: center;
    color: var(--text-muted);
    font-size: 1rem;
    max-width: 640px;
    margin: 6px auto 0;
}

/* ===== Reveal 动画 ===== */
.reveal {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.7s var(--transition-smooth), transform 0.7s var(--transition-smooth);
}
.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* ===== 高亮闪烁 ===== */
@keyframes flash-highlight {
    0% { box-shadow: 0 0 0 0 rgba(234, 88, 12, 0.5); }
    50% { box-shadow: 0 0 0 20px rgba(234, 88, 12, 0); }
    100% { box-shadow: 0 0 0 0 rgba(234, 88, 12, 0); }
}
.highlight-flash {
    animation: flash-highlight 0.9s ease-out;
    border-radius: var(--radius-lg);
}

/* ===== 导航栏 ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(15, 23, 42, 0.82);
    backdrop-filter: var(--glass-blur) saturate(1.6);
    -webkit-backdrop-filter: var(--glass-blur) saturate(1.6);
    z-index: 1000;
    padding: 10px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    transition: all 0.3s;
}
.navbar.scrolled {
    background: rgba(15, 23, 42, 0.94);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.30);
}
.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.logo img {
    display: block;
    height: 38px;
    width: auto;
    max-width: 170px;
    object-fit: contain;
}
.nav-links {
    display: flex;
    gap: 28px;
    align-items: center;
    list-style: none;
}
.nav-links a {
    text-decoration: none;
    color: #cbd5e1;
    font-weight: 500;
    font-size: 0.9rem;
    transition: all 0.3s;
    position: relative;
    padding: 4px 0;
    cursor: pointer;
}
.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width 0.3s;
}
.nav-links a:hover {
    color: #fff;
}
.nav-links a:hover::after {
    width: 100%;
}
.nav-links .nav-cta {
    background: var(--primary);
    color: #fff !important;
    padding: 7px 20px;
    border-radius: 60px;
    font-size: 0.85rem;
}
.nav-links .nav-cta::after {
    display: none;
}
.nav-links .nav-cta:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}
.mobile-toggle {
    display: none;
    background: none;
    border: none;
    color: #fff;
    font-size: 1.5rem;
    cursor: pointer;
}

/* =============================================
   HERO 首屏 — 保留地球，改文案，渐变修正
   ============================================= */
.hero-outer {
    position: relative;
    overflow: hidden;
    width: 100%;
    min-height: 100dvh;
    height: 100dvh;
    display: flex;
    align-items: center;
    padding-top: 60px;
    background: #07111e;
}
#global-canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    display: block;
    pointer-events: none;
    opacity: 0.55;
}
.hero-outer::after {
    content: '';
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 2;
    background:
        linear-gradient(90deg,
            rgba(5, 8, 14, .92) 0%,
            rgba(5, 8, 14, .68) 38%,
            rgba(5, 8, 14, .18) 70%,
            rgba(5, 8, 14, .05) 100%),
        linear-gradient(180deg,
            rgba(5, 8, 14, .35) 0%,
            transparent 45%,
            rgba(5, 8, 14, .55) 100%);
}
.hero-outer .container {
    position: relative;
    z-index: 3;
    width: 100%;
}

/* —— Hero 内容 —— */
.hero-content {
    position: relative;
    width: min(1100px, calc(100% - 40px));
    margin: 0 auto;
    text-align: center;
    transform: translateX(0);
}

/* H1 标题 — 两行，第二行使用白→橙渐变（明显） */
.hero-title {
    margin: 0;
    font-size: clamp(42px, 5.2vw, 72px);
    line-height: 1.08;
    font-weight: 800;
    letter-spacing: -.045em;
    color: #fff;
}
.hero-title span {
    display: block;
    margin-top: 8px;
    background: linear-gradient(
        90deg,
        #ffffff 0%,
        #ffb07a 55%,
        #ea580c 100%
    );
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}

/* 五大云厂商 Logo 行 — 轻量标签 */
.hero-clouds {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 28px;
}
.cloud-brand {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    min-height: 38px;
    padding: 7px 13px;
    border: 1px solid rgba(255, 255, 255, .08);
    border-radius: 10px;
    background: rgba(255, 255, 255, .035);
    color: rgba(255, 255, 255, .82);
    font-size: 13px;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    transition: transform .25s ease, border-color .25s ease, background .25s ease;
}
.cloud-brand img {
    width: 20px;
    height: 20px;
    object-fit: contain;
    flex-shrink: 0;
}
.cloud-brand:hover {
    transform: translateY(-2px);
    border-color: rgba(255, 255, 255, .18);
    background: rgba(255, 255, 255, .07);
}

/* 信任标签 — 四个轻量点，整行橙色 */
.hero-trust {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px 18px;
    margin-top: 22px;
}
.hero-trust span {
    color: #f9a36a;
    font-size: 13px;
    white-space: nowrap;
}

/* 描述 */
.hero-desc {
    max-width: 720px;
    margin: 18px auto 0;
    color: rgba(255, 255, 255, .58);
    font-size: 15px;
    line-height: 1.8;
}

/* CTA 按钮组 — 两个都清晰可见 */
.hero-actions {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 12px;
    margin-top: 28px;
}
.hero-actions a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 9px;
    min-width: 168px;
    height: 48px;
    padding: 0 22px;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    transition: .25s ease;
    border: none;
    cursor: pointer;
}
.btn-primary-hero {
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    color: #fff;
    box-shadow: 0 8px 30px rgba(234, 88, 12, 0.30);
}
.btn-primary-hero:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 40px rgba(234, 88, 12, 0.45);
}
.btn-secondary-hero {
    color: #ffffff;
    border: 1.5px solid rgba(255, 255, 255, 0.5);
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}
.btn-secondary-hero:hover {
    transform: translateY(-2px);
    background: rgba(255, 255, 255, 0.16);
    border-color: rgba(255, 255, 255, 0.7);
}

/* =============================================
   桌面端：内容偏左 3% (视觉居中)
   ============================================= */
@media (min-width: 1000px) {
    .hero-content {
        width: min(1180px, calc(100% - 80px));
        text-align: left;
        margin: 0 auto;
        transform: translateX(-3%);
    }
    .hero-clouds,
    .hero-trust,
    .hero-actions {
        justify-content: flex-start;
    }
    .hero-desc {
        margin-left: 0;
        margin-right: 0;
    }
    .hero-outer .container {
        padding: 0 0 0 0;
    }
}

/* =============================================
   手机端：居中（优化版）
   ============================================= */
@media (max-width: 767px) {
    /* ===== Hero 移动端优化 ===== */
    .hero-outer {
        min-height: 100svh;  /* 使用 svh 单位，避免地址栏遮挡 */
        height: auto;
        padding-top: 64px;
        padding-bottom: 32px;
        align-items: center;
        display: flex;
    }

    /* 背景遮罩增强对比度 */
    .hero-outer::after {
        background:
            linear-gradient(180deg,
                rgba(5, 8, 14, .93) 0%,
                rgba(5, 8, 14, .72) 35%,
                rgba(5, 8, 14, .45) 70%,
                rgba(5, 8, 14, .20) 100%);
    }

    .hero-content {
        width: calc(100% - 28px);
        margin: 0 auto;
        text-align: center;
        transform: none;
    }

    /* 标题优化 */
    .hero-title {
        font-size: clamp(30px, 8.5vw, 42px);
        line-height: 1.1;
        letter-spacing: -.04em;
    }
    .hero-title span {
        margin-top: 4px;
        font-size: clamp(24px, 7vw, 34px);  /* 第二行稍小，避免太长 */
        line-height: 1.15;
    }

    /* 云厂商标签 — 更紧凑 */
    .hero-clouds {
        gap: 6px;
        margin-top: 18px;
    }
    .cloud-brand {
        padding: 4px 8px;
        font-size: 10px;
        min-height: 28px;
        gap: 5px;
    }
    .cloud-brand img {
        width: 15px;
        height: 15px;
    }

    /* 信任标签 — 精简展示 */
    .hero-trust {
        gap: 5px 10px;
        margin-top: 14px;
    }
    .hero-trust span {
        font-size: 10px;
        padding: 2px 8px;
        background: rgba(255, 255, 255, 0.04);
        border-radius: 20px;
        border: 1px solid rgba(255, 255, 255, 0.06);
    }

    /* 描述文字 */
    .hero-desc {
        font-size: 12.5px;
        line-height: 1.65;
        margin-top: 12px;
        max-width: 320px;
        margin-left: auto;
        margin-right: auto;
    }

    /* CTA 按钮 — 横向排列（节省高度） */
    .hero-actions {
        flex-direction: row;
        width: 100%;
        margin-top: 18px;
        gap: 8px;
        justify-content: center;
    }
    .hero-actions a {
        flex: 1;
        max-width: 180px;
        min-width: 0;
        height: 42px;
        font-size: 12px;
        padding: 0 12px;
        gap: 6px;
    }

    /* 地球动画移动端优化 */
    #global-canvas {
        opacity: 0.4;  /* 降低透明度，减少视觉干扰 */
    }
}

/* 超小屏进一步优化 */
@media (max-width: 375px) {
    .hero-clouds {
        gap: 4px;
    }
    .cloud-brand {
        padding: 3px 6px;
        font-size: 9px;
    }
    .hero-trust span {
        font-size: 9px;
    }
}

/* =============================================
   下方模块 — 统一背景
   ============================================= */
.vendor-section,
.product-section,
.why-section,
.bot-section,
.audience-section,
.faq-section,
.cta-section {
    padding: 48px 0 32px;
    background: var(--bg-body);
}

/* ===== 玻璃卡片基类 ===== */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid rgba(255, 255, 255, 0.80);
    box-shadow: var(--shadow-sm);
    transition: all 0.40s var(--transition-smooth);
    border-radius: var(--radius-lg);
}
.glass-card-hover:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(234, 88, 12, 0.15);
}

/* =============================================
   五大云平台
   ============================================= */
.vendor-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
    margin: 16px 0 4px;
}
.vendor-card {
    border-radius: var(--radius-lg);
    padding: 24px 16px 20px;
    display: flex;
    flex-direction: column;
    background: rgba(255, 255, 255, 0.70);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.85);
    box-shadow: var(--shadow-sm);
    transition: all 0.40s var(--transition-smooth);
    position: relative;
    overflow: hidden;
    min-height: 180px;
}
.vendor-card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--radius-lg);
    padding: 1px;
    background: linear-gradient(135deg, transparent 40%, rgba(234, 88, 12, 0.06) 100%);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    pointer-events: none;
}
.vendor-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
    border-color: rgba(234, 88, 12, 0.10);
}
.vendor-card .brand-logo {
    height: 32px;
    width: auto;
    max-width: 100%;
    object-fit: contain;
    margin-bottom: 10px;
    align-self: flex-start;
    filter: brightness(1) saturate(1);
    transition: filter 0.3s;
}
.vendor-card:hover .brand-logo {
    filter: brightness(1.02) saturate(1.05);
}
.vendor-name {
    font-size: 1.05rem;
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 2px;
    letter-spacing: -0.01em;
}
.vendor-desc {
    font-size: 0.78rem;
    color: var(--text-muted);
    margin-bottom: 10px;
    line-height: 1.5;
}
.vendor-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
    margin-top: auto;
}
.vendor-tags span {
    background: rgba(234, 88, 12, 0.05);
    padding: 3px 10px;
    border-radius: 40px;
    font-size: 0.65rem;
    font-weight: 500;
    color: var(--primary);
    border: 1px solid rgba(234, 88, 12, 0.08);
    letter-spacing: 0.02em;
}

/* =============================================
   热门产品
   ============================================= */
.product-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 16px;
    margin: 16px 0 4px;
}
.product-card {
    border-radius: var(--radius-lg);
    padding: 22px 12px 18px;
    text-align: center;
    background: rgba(255, 255, 255, 0.70);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.85);
    box-shadow: var(--shadow-sm);
    transition: all 0.40s var(--transition-smooth);
}
.product-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: rgba(234, 88, 12, 0.10);
}
.product-card i {
    font-size: 1.6rem;
    color: var(--primary);
    margin-bottom: 8px;
    display: block;
}
.product-card h4 {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 2px;
}
.product-card .product-desc {
    font-size: 0.7rem;
    color: var(--text-muted);
    margin-bottom: 6px;
}
.product-card .product-platforms {
    font-size: 0.6rem;
    color: #94a3b8;
    letter-spacing: 0.02em;
    background: rgba(0, 0, 0, 0.02);
    padding: 2px 10px;
    border-radius: 30px;
    display: inline-block;
}

/* =============================================
   为什么选择蚂蚁云 — 4张卡片
   ============================================= */
.why-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
    margin: 16px 0 4px;
}
.why-card {
    border-radius: var(--radius-lg);
    padding: 28px 16px 22px;
    text-align: center;
    background: rgba(255, 255, 255, 0.70);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.85);
    box-shadow: var(--shadow-sm);
    transition: all 0.40s var(--transition-smooth);
}
.why-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: rgba(234, 88, 12, 0.08);
}
.why-card i {
    font-size: 1.8rem;
    color: var(--primary);
    margin-bottom: 10px;
    display: block;
}
.why-card h4 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 4px;
}
.why-card p {
    font-size: 0.8rem;
    color: var(--text-muted);
    line-height: 1.5;
}

/* =============================================
   Telegram 自助服务 — 提前，改内容
   ============================================= */
.bot-card {
    max-width: 780px;
    margin: 16px auto 4px;
    border-radius: var(--radius-xl);
    padding: 32px 28px;
    background: linear-gradient(145deg, #1a2634, #0f172a);
    color: #f1f5f9;
    border: 1px solid rgba(234, 88, 12, 0.18);
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.20);
}
.bot-card .bot-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 18px;
    padding-bottom: 14px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.bot-card .bot-header .bot-avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: 700;
    color: #fff;
    flex-shrink: 0;
}
.bot-card .bot-header .bot-name {
    font-weight: 700;
    font-size: 1.05rem;
    color: #fff;
}
.bot-card .bot-header .bot-status {
    font-size: 0.7rem;
    color: #94a3b8;
    display: flex;
    align-items: center;
    gap: 6px;
}
.bot-card .bot-header .bot-status .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #22c55e;
    display: inline-block;
    animation: pulse-dot 2s ease-in-out infinite;
}
@keyframes pulse-dot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.4; transform: scale(0.85); }
}
.bot-card .bot-commands {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    margin: 14px 0 16px;
}
.bot-card .bot-commands .cmd {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 12px;
    padding: 12px 14px;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: all 0.3s;
}
.bot-card .bot-commands .cmd:hover {
    background: rgba(255, 255, 255, 0.07);
    border-color: rgba(234, 88, 12, 0.20);
}
.bot-card .bot-commands .cmd i {
    color: var(--primary-light);
    font-size: 1rem;
    width: 20px;
    text-align: center;
}
.bot-card .bot-commands .cmd span {
    font-size: 0.85rem;
    color: #e5edf5;
}
.bot-card .bot-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    padding-top: 14px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    font-size: 0.8rem;
    color: #94a3b8;
}
.bot-card .bot-footer .bot-handle {
    background: rgba(255, 255, 255, 0.04);
    padding: 4px 14px;
    border-radius: 40px;
    font-family: monospace;
    font-size: 0.8rem;
    color: #cbd5e1;
}
.bot-card .btn-bot {
    background: linear-gradient(135deg, #2b5278, #1a3a5a);
    border: 1px solid rgba(255, 255, 255, 0.10);
    color: #fff;
    padding: 10px 28px;
    border-radius: 60px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
.bot-card .btn-bot:hover {
    background: linear-gradient(135deg, #3a6a92, #2b5278);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.30);
}

/* =============================================
   适合哪些业务
   ============================================= */
.audience-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin: 16px 0 4px;
}
.audience-card {
    border-radius: var(--radius-lg);
    padding: 24px 16px 20px;
    text-align: center;
    background: rgba(255, 255, 255, 0.70);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.85);
    box-shadow: var(--shadow-sm);
    transition: all 0.40s var(--transition-smooth);
}
.audience-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: rgba(234, 88, 12, 0.08);
}
.audience-card i {
    font-size: 1.8rem;
    color: var(--primary);
    margin-bottom: 8px;
    display: block;
}
.audience-card h4 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 2px;
}
.audience-card p {
    font-size: 0.78rem;
    color: var(--text-muted);
    line-height: 1.5;
}

/* =============================================
   FAQ
   ============================================= */
.faq-grid {
    max-width: 820px;
    margin: 16px auto 4px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.faq-item {
    border-radius: var(--radius-md);
    overflow: hidden;
    background: rgba(255, 255, 255, 0.75);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.85);
    padding: 18px 22px;
    transition: all 0.3s;
    box-shadow: var(--shadow-sm);
}
.faq-item:hover {
    box-shadow: var(--shadow-md);
    border-color: rgba(234, 88, 12, 0.06);
}
.faq-question {
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 6px;
    font-size: 0.98rem;
    display: flex;
    align-items: center;
    gap: 10px;
}
.faq-question .q-icon {
    color: var(--primary);
    font-size: 0.8rem;
    font-weight: 400;
    opacity: 0.7;
}
.faq-answer {
    color: var(--text-muted);
    font-size: 0.88rem;
    line-height: 1.7;
    padding-left: 26px;
}
.faq-answer strong {
    color: var(--text-dark);
}

/* =============================================
   获取报价 CTA 底部
   ============================================= */
.cta-section {
    padding: 48px 0 32px;
    background: var(--bg-body);
}
.cta-banner {
    text-align: center;
    max-width: 640px;
    margin: 0 auto;
    padding: 32px 20px;
    border-radius: var(--radius-xl);
    background: rgba(255, 255, 255, 0.60);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.80);
}
.cta-banner h2 {
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 12px;
}
.cta-banner p {
    color: var(--text-muted);
    margin-bottom: 20px;
}
.cta-banner .cta-actions {
    display: flex;
    gap: 14px;
    justify-content: center;
    flex-wrap: wrap;
}
.cta-banner .cta-actions .btn {
    min-width: 160px;
}

/* =============================================
   Footer
   ============================================= */
footer {
    background: linear-gradient(180deg, #0f172a 0%, #020617 100%);
    color: #94a3b8;
    padding: 44px 0 20px;
    margin-top: 32px;
    border-radius: 30px 30px 0 0;
}
.footer-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 30px;
    margin-bottom: 28px;
}
.footer-col {
    flex: 1;
    min-width: 140px;
}
.footer-col h4 {
    color: #fff;
    margin-bottom: 10px;
    font-size: 0.95rem;
    font-weight: 700;
}
.footer-col a {
    display: block;
    color: #94a3b8;
    text-decoration: none;
    font-size: 0.82rem;
    margin-bottom: 5px;
    transition: color 0.3s;
}
.footer-col a:hover {
    color: #fff;
}
.footer-col p {
    font-size: 0.82rem;
    line-height: 1.6;
}
.copyright {
    text-align: center;
    padding-top: 16px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    font-size: 0.75rem;
    color: #475569;
}

/* =============================================
   响应式
   ============================================= */
@media (max-width: 1024px) {
    .vendor-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .product-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .why-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .audience-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 900px) {
    .mobile-toggle {
        display: block;
    }
    .nav-links {
        position: fixed;
        top: 60px;
        left: 0;
        right: 0;
        background: rgba(15, 23, 42, 0.98);
        flex-direction: column;
        padding: 20px 24px;
        gap: 10px;
        transform: translateY(-150%);
        opacity: 0;
        transition: all 0.4s;
        border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }
    .nav-links.open {
        transform: translateY(0);
        opacity: 1;
    }
    .nav-links a {
        padding: 8px 0;
        font-size: 1rem;
    }
    .bot-card .bot-commands {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .vendor-grid,
    .product-grid,
    .why-grid,
    .audience-grid {
        grid-template-columns: 1fr 1fr;
    }
    .footer-content {
        flex-direction: column;
        gap: 20px;
    }
    .bot-card .bot-footer {
        flex-direction: column;
        align-items: stretch;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .vendor-grid,
    .product-grid,
    .why-grid,
    .audience-grid {
        grid-template-columns: 1fr;
    }
    .section-title {
        font-size: 1.8rem;
    }
    .bot-card {
        padding: 20px 16px;
    }
    .faq-item {
        padding: 14px 16px;
    }
    .faq-answer {
        padding-left: 0;
    }
}

/* =============================================
   悬浮按钮
   ============================================= */
.floating-buttons {
    position: fixed;
    right: 24px;
    bottom: 24px;
    z-index: 999;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.floating-main-btn {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: #fff;
    border: none;
    cursor: pointer;
    font-size: 1.4rem;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(234, 88, 12, 0.4);
    transition: transform 0.3s, box-shadow 0.3s;
    position: relative;
    z-index: 2;
}
.floating-main-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 28px rgba(234, 88, 12, 0.55);
}
.floating-main-btn.active {
    transform: rotate(135deg);
}

.floating-menu {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    opacity: 0;
    pointer-events: none;
    transform: translateY(20px);
    transition: opacity 0.3s, transform 0.3s;
}
.floating-menu.open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}

.floating-item {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: #fff;
    color: var(--primary);
    border: 1px solid rgba(234, 88, 12, 0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    font-size: 1.2rem;
    cursor: pointer;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s, box-shadow 0.3s, background 0.3s, color 0.3s;
    position: relative;
}
.floating-item:hover {
    transform: scale(1.1);
    box-shadow: 0 4px 16px rgba(234, 88, 12, 0.3);
    background: var(--primary);
    color: #fff;
}
.floating-item::after {
    content: attr(data-label);
    position: absolute;
    right: 60px;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(15, 23, 42, 0.9);
    color: #fff;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s;
}
.floating-item:hover::after {
    opacity: 1;
}

/* 移动端调整位置 */
@media (max-width: 768px) {
    .floating-buttons {
        right: 16px;
        bottom: 16px;
    }
    .floating-main-btn {
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
    }
    .floating-item {
        width: 44px;
        height: 44px;
        font-size: 1rem;
    }
}