/* ======================================================
   页面构建器 v5 — 极简科技风 + 辅色点缀
   设计理念: 主色(按钮/图标) + 辅色(副标题/勾选) + 大面积中性色
   无花哨渐变，干净线条，精准留白，优雅阴影
   ====================================================== */

/* ==================== 基础变量 ==================== */
:root {
    /* 主题色（JS 注入） */
    --pb-primary: #2563eb;
    --pb-primary-dark: #1d4ed8;
    --pb-primary-light: #eff6ff;
    --pb-accent: #10b981;
    /* 中性色基底 */
    --pb-bg: #ffffff;
    --pb-bg-alt: #f8fafc;
    --pb-bg-dark: #0f172a;
    --pb-text: #0f172a;
    --pb-text-secondary: #475569;
    --pb-text-light: #cbd5e1;
    --pb-border: #e2e8f0;
    --pb-border-dark: rgba(255,255,255,0.08);
    /* 尺寸与质感 */
    --pb-radius: 12px;
    --pb-radius-lg: 16px;
    --pb-radius-btn: 50px;
    --pb-shadow-xs: 0 1px 2px rgba(0,0,0,0.04);
    --pb-shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
    --pb-shadow: 0 4px 12px rgba(0,0,0,0.06);
    --pb-shadow-lg: 0 12px 40px rgba(0,0,0,0.08);
    --pb-transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==================== 容器 ==================== */
.pb-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ==================== 区块基础 ==================== */
.pb-section {
    padding: 88px 0;
    background: var(--pb-bg);
}
.pb-section:nth-child(even) {
    background: var(--pb-bg-alt);
}

/* ==================== 区块标题 ==================== */
.pb-section-header {
    text-align: center;
    margin-bottom: 56px;
}
.pb-section-title {
    font-size: clamp(26px, 4vw, 38px);
    font-weight: 750;
    color: var(--pb-text);
    margin: 0;
    letter-spacing: -0.02em;
    line-height: 1.25;
}
.pb-section-title span {
    color: var(--pb-primary);
}
.pb-section-title em {
    font-style: normal;
    font-weight: 500;
    color: var(--pb-accent);
    font-size: 0.75em;
}
.pb-section-desc {
    color: var(--pb-text-secondary);
    font-size: 1.05rem;
    margin: 14px 0 0;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.6;
}

/* ==================== Hero v7 — 双屏轮播 + 动感光球 ==================== */
.pb-hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #080d18;
    overflow: hidden;
}

/* ----- 每屏幻灯片 ----- */
.pb-hero-slide {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transform: scale(1.03);
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1),
                transform 0.9s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
    z-index: 0;
}
.pb-hero-slide.active {
    opacity: 1;
    transform: scale(1);
    pointer-events: auto;
    z-index: 2;
}
.pb-hero-slide.leaving {
    opacity: 0;
    transform: scale(0.96);
    z-index: 1;
    transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1),
                transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}
.pb-hero-slide.entering {
    animation: slideBounce 0.8s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}
@keyframes slideBounce {
    0%   { opacity: 0; transform: scale(1.05); }
    60%  { opacity: 1; transform: scale(0.98); }
    100% { opacity: 1; transform: scale(1); }
}

/* ----- 动态渐变光球背景（CSS 动画，GPU 加速） ----- */
.pb-hero-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.3;
    pointer-events: none;
    z-index: 0;
    animation-timing-function: ease-in-out;
    animation-iteration-count: infinite;
}
.pb-hero-orb--1 {
    width: 600px; height: 600px;
    background: radial-gradient(circle, var(--pb-primary) 0%, transparent 70%);
    top: -15%; left: -10%;
    animation: orbFloat1 12s infinite;
}
.pb-hero-orb--2 {
    width: 500px; height: 500px;
    background: radial-gradient(circle, var(--pb-accent, #10b981) 0%, transparent 70%);
    bottom: -20%; right: -8%;
    animation: orbFloat2 15s infinite;
}
.pb-hero-orb--3 {
    width: 400px; height: 400px;
    background: radial-gradient(circle, var(--pb-primary-dark) 0%, transparent 70%);
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    animation: orbPulse 8s infinite;
    opacity: 0.18;
}

@keyframes orbFloat1 {
    0%, 100% { transform: translate(0, 0) scale(1); }
    25%  { transform: translate(60px, -40px) scale(1.08); }
    50%  { transform: translate(-20px, -80px) scale(0.94); }
    75%  { transform: translate(-50px, -20px) scale(1.04); }
}
@keyframes orbFloat2 {
    0%, 100% { transform: translate(0, 0) scale(1); }
    25%  { transform: translate(-40px, 50px) scale(1.06); }
    50%  { transform: translate(30px, -30px) scale(0.92); }
    75%  { transform: translate(50px, 20px) scale(1.05); }
}
@keyframes orbPulse {
    0%, 100% { transform: translate(-50%, -50%) scale(1); }
    50%  { transform: translate(-50%, -50%) scale(1.3); }
}

/* ----- 粒子 Canvas ----- */
.pb-hero-canvas {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    z-index: 1;
    opacity: 0.7;
}
.pb-hero-bg-img {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background-size: cover;
    background-position: center;
    opacity: 0.12;
    z-index: 1;
}
.pb-hero-overlay {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background:
        linear-gradient(180deg, rgba(8,13,24,0.4) 0%, rgba(8,13,24,0.15) 50%, rgba(8,13,24,0.6) 100%),
        radial-gradient(ellipse at 50% 0%, rgba(255,255,255,0.04) 0%, transparent 50%);
    z-index: 2;
    pointer-events: none;
}

/* ----- 内容容器: 宽屏大气 ----- */
.pb-hero-content {
    position: relative;
    z-index: 3;
    text-align: center;
    padding: 80px 40px;
    max-width: 1280px;
    width: 100%;
}
.pb-hero-top { margin-bottom: 48px; }
.pb-hero-title {
    font-size: clamp(36px, 5vw, 64px);
    font-weight: 850;
    color: #fff;
    margin: 0 0 24px;
    letter-spacing: -0.03em;
    line-height: 1.12;
    text-shadow: 0 2px 40px rgba(0,0,0,0.3);
}
.pb-hero-subtitle {
    font-size: clamp(17px, 1.8vw, 21px);
    color: var(--pb-text-light);
    line-height: 1.75;
    margin: 0;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* ----- 亮点卡片网格: 桌面端单排 ----- */
.pb-hero-highlights {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    margin-bottom: 48px;
    max-width: 1100px;
    margin-left: auto;
    margin-right: auto;
}
.pb-hero-hl-card {
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--pb-radius-lg);
    padding: 28px 24px;
    display: flex;
    align-items: center;
    gap: 16px;
    opacity: 0;
    animation: fadeInUp 0.5s ease-out forwards;
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    cursor: default;
}
.pb-hero-hl-card:hover {
    background: rgba(255,255,255,0.1);
    border-color: var(--pb-primary);
    transform: translateY(-4px);
    box-shadow: 0 8px 32px rgba(0,0,0,0.25), 0 0 0 1px var(--pb-primary);
}
.pb-hero-hl-icon {
    width: 52px; height: 52px;
    min-width: 52px;
    border-radius: 14px;
    background: linear-gradient(135deg, var(--pb-primary), var(--pb-primary-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 1.25rem;
    color: #fff;
    box-shadow: 0 4px 16px rgba(0,0,0,0.2);
    transition: transform 0.3s ease;
}
.pb-hero-hl-card:hover .pb-hero-hl-icon {
    transform: scale(1.1);
}
.pb-hero-hl-info { text-align: left; }
.pb-hero-hl-info strong {
    display: block;
    font-size: 1rem;
    font-weight: 650;
    color: #fff;
    margin-bottom: 4px;
    letter-spacing: -0.01em;
}
.pb-hero-hl-info span {
    font-size: 0.85rem;
    color: var(--pb-text-light);
    line-height: 1.4;
}

/* ----- 按钮 ----- */
.pb-hero-btns {
    display: flex;
    gap: 18px;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 8px;
}
.pb-hero-mockup { margin-top: 56px; }
.pb-hero-mockup img {
    max-width: 100%;
    max-height: 440px;
    border-radius: var(--pb-radius-lg);
    box-shadow: 0 24px 80px rgba(0,0,0,0.4);
    transition: transform 0.3s ease;
}
.pb-hero-mockup img:hover { transform: translateY(-4px); }

/* ----- 向下滚动指示器（桌面端显示） ----- */
.pb-hero-scroll-hint {
    position: absolute;
    bottom: 36px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    opacity: 0.5;
    animation: scrollBounce 2s ease-in-out infinite;
}
.pb-hero-scroll-hint span {
    font-size: 0.75rem;
    color: var(--pb-text-light);
    letter-spacing: 0.08em;
    text-transform: uppercase;
}
.pb-hero-scroll-hint .scroll-line {
    width: 1px; height: 28px;
    background: linear-gradient(180deg, var(--pb-primary), transparent);
}
@keyframes scrollBounce {
    0%, 100% { transform: translateX(-50%) translateY(0); opacity: 0.5; }
    50% { transform: translateX(-50%) translateY(8px); opacity: 0.8; }
}

/* ----- 轮播导航箭头 ----- */
.pb-hero-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 5;
    width: 48px; height: 48px;
    border-radius: 50%;
    border: 1px solid rgba(255,255,255,0.15);
    background: rgba(255,255,255,0.06);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    color: rgba(255,255,255,0.7);
    font-size: 1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    outline: none;
}
.pb-hero-arrow:hover {
    background: rgba(255,255,255,0.15);
    border-color: rgba(255,255,255,0.3);
    color: #fff;
    box-shadow: 0 4px 20px rgba(0,0,0,0.3);
}
.pb-hero-arrow--prev { left: 24px; }
.pb-hero-arrow--next { right: 24px; }

/* ----- 轮播圆点指示器 ----- */
.pb-hero-dots {
    position: absolute;
    bottom: 100px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 5;
    display: flex;
    gap: 10px;
}
.pb-hero-dot {
    width: 10px; height: 10px;
    border-radius: 50%;
    background: rgba(255,255,255,0.25);
    cursor: pointer;
    transition: all 0.35s ease;
}
.pb-hero-dot:hover { background: rgba(255,255,255,0.5); }
.pb-hero-dot.active {
    background: var(--pb-primary);
    width: 28px;
    border-radius: 5px;
    box-shadow: 0 0 12px rgba(var(--pb-primary), 0.5);
}

/* ----- Slide 2 专属叠加层（更科技紫调） ----- */
.slide-2-overlay {
    background:
        linear-gradient(180deg, rgba(40,10,80,0.35) 0%, rgba(8,13,24,0.1) 50%, rgba(8,13,24,0.6) 100%),
        radial-gradient(ellipse at 60% 30%, rgba(124,58,237,0.06) 0%, transparent 60%) !important;
}

/* ==================== 特性卡片 ==================== */
.pb-features {
    background: var(--pb-bg);
    position: relative;
    overflow: hidden;
}
.pb-features:nth-child(even) { background: var(--pb-bg-alt); }

/* Glass 变体背景 — 深色渐变 + 光球 */
.pb-features-glass-bg {
    background: linear-gradient(135deg, #0a0f1a 0%, #111827 50%, #0c1320 100%) !important;
    color: #fff;
}
.pb-features-glass-bg::before {
    content: '';
    position: absolute;
    width: 500px; height: 500px;
    border-radius: 50%;
    background: radial-gradient(circle, var(--pb-primary) 0%, transparent 70%);
    top: -15%; right: -10%;
    opacity: 0.08;
    filter: blur(100px);
    pointer-events: none;
}
.pb-features-glass-bg::after {
    content: '';
    position: absolute;
    width: 400px; height: 400px;
    border-radius: 50%;
    background: radial-gradient(circle, var(--pb-accent, #10b981) 0%, transparent 70%);
    bottom: -15%; left: -10%;
    opacity: 0.06;
    filter: blur(100px);
    pointer-events: none;
}
.pb-features-glass-bg .pb-section-title { color: #fff; }
.pb-features-glass-bg .pb-section-title span { background: linear-gradient(135deg, var(--pb-primary), var(--pb-accent, #10b981)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.pb-features-glass-bg .pb-section-title em { color: var(--pb-text-light); }
.pb-features-glass-bg .pb-section-desc { color: var(--pb-text-light); }

.pb-features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 24px;
    position: relative;
    z-index: 1;
}
.pb-features-grid.pb-features-large {
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
}

/* ----- 默认卡片 ----- */
.pb-feature-card {
    background: var(--pb-bg);
    border: 1px solid var(--pb-border);
    border-radius: var(--pb-radius-lg);
    padding: 32px 28px;
    opacity: 0;
    animation: fadeInUp 0.5s ease-out forwards;
    transition: all var(--pb-transition);
}
.pb-feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--pb-shadow-lg);
    border-color: var(--pb-primary);
}
.pb-feature-card-lg { padding: 40px 32px; }

/* ----- Glass 玻璃拟态卡片（深色背景上使用） ----- */
.pb-feature-card-glass {
    background: rgba(255,255,255,0.04) !important;
    border: 1px solid rgba(255,255,255,0.1) !important;
    border-radius: var(--pb-radius-lg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    padding: 36px 28px;
    opacity: 0;
    animation: fadeInUp 0.5s ease-out forwards;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}
/* Glass 卡片顶部光条 */
.pb-feature-card-glass::before {
    content: '';
    position: absolute;
    top: 0; left: 20%; right: 20%;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: all 0.4s ease;
}
.pb-feature-card-glass:hover {
    background: rgba(255,255,255,0.08) !important;
    border-color: var(--pb-primary) !important;
    transform: translateY(-6px);
    box-shadow: 0 12px 40px rgba(0,0,0,0.3), 0 0 0 1px rgba(var(--pb-primary-rgb), 0.3);
}
.pb-feature-card-glass:hover::before {
    left: 5%; right: 5%;
    background: linear-gradient(90deg, transparent, var(--pb-primary), transparent);
}
.pb-feature-card-glass .pb-card-icon {
    background: linear-gradient(135deg, var(--pb-primary), var(--pb-primary-dark)) !important;
    color: #fff !important;
    border-radius: 14px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.25);
}
.pb-feature-card-glass:hover .pb-card-icon {
    transform: scale(1.08);
    box-shadow: 0 6px 24px rgba(0,0,0,0.35);
}
.pb-feature-card-glass .pb-feature-text h3 {
    color: #fff !important;
}
.pb-feature-card-glass .pb-feature-text p {
    color: var(--pb-text-light) !important;
}
.pb-feature-card-glass:hover .pb-feature-text h3 {
    color: var(--pb-primary) !important;
}

/* ----- 序号数字 01 02 03... ----- */
.pb-feature-number {
    display: block;
    font-size: 3rem;
    font-weight: 900;
    line-height: 1;
    margin-bottom: 8px;
    background: linear-gradient(135deg, var(--pb-primary), var(--pb-accent, #10b981));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.02em;
    opacity: 0.3;
}
.pb-feature-card-glass:hover .pb-feature-number { opacity: 0.6; }

.pb-card-icon {
    width: 48px; height: 48px;
    border-radius: 12px;
    background: var(--pb-primary-light);
    color: var(--pb-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    margin-bottom: 20px;
    transition: all var(--pb-transition);
}
.pb-feature-card:hover .pb-card-icon {
    background: var(--pb-primary);
    color: #fff;
    transform: scale(1.05);
}
.pb-feature-text h3 {
    font-size: 1.05rem;
    font-weight: 650;
    color: var(--pb-text);
    margin: 0 0 8px;
    transition: color var(--pb-transition);
}
.pb-feature-card:hover .pb-feature-text h3 { color: var(--pb-primary); }
.pb-feature-text p {
    font-size: 0.92rem;
    color: var(--pb-text-secondary);
    line-height: 1.6;
    margin: 0;
}

/* ==================== 标签云 ==================== */
.pb-tags-section { background: var(--pb-bg-alt); }
.pb-tags-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
    max-width: 900px;
    margin: 0 auto;
}
.pb-tag-chip {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    background: var(--pb-bg);
    border: 1px solid var(--pb-border);
    border-radius: 50px;
    padding: 8px 20px;
    font-size: 0.9rem;
    color: var(--pb-text);
    cursor: default;
    opacity: 0;
    animation: fadeInUp 0.45s ease-out forwards;
    transition: all var(--pb-transition);
}
.pb-tag-chip:hover {
    background: var(--pb-primary);
    color: #fff;
    border-color: var(--pb-primary);
    transform: translateY(-2px);
    box-shadow: var(--pb-shadow);
}
.pb-tag-chip i {
    font-size: 0.8rem;
    color: var(--pb-accent);
    transition: color var(--pb-transition);
}
.pb-tag-chip:hover i { color: #fff; }

/* ==================== 展示区 (左图右文) ==================== */
.pb-showcase { background: var(--pb-bg); }
.pb-showcase-list { display: flex; flex-direction: column; gap: 64px; }
.pb-showcase-item {
    display: flex;
    align-items: center;
    gap: 64px;
    opacity: 0;
    animation: fadeInUp 0.6s ease-out forwards;
}
.pb-showcase-reverse { flex-direction: row-reverse; }
.pb-showcase-image {
    flex: 1;
    border-radius: var(--pb-radius-lg);
    overflow: hidden;
    box-shadow: var(--pb-shadow);
    min-height: 300px;
    background: var(--pb-bg-alt);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--pb-border);
}
.pb-showcase-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.pb-showcase-placeholder {
    font-size: 3.5rem;
    color: var(--pb-primary-light);
}
.pb-showcase-placeholder i { color: var(--pb-primary); opacity: 0.15; }
.pb-showcase-text { flex: 1; }
.pb-showcase-text h3 {
    font-size: clamp(20px, 3vw, 28px);
    font-weight: 750;
    color: var(--pb-text);
    margin: 0 0 16px;
    letter-spacing: -0.01em;
}
.pb-showcase-text p {
    font-size: 1rem;
    color: var(--pb-text-secondary);
    line-height: 1.7;
    margin: 0 0 20px;
}
.pb-showcase-bullets {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.pb-showcase-bullets li {
    font-size: 0.95rem;
    color: var(--pb-text);
    display: flex;
    align-items: center;
    gap: 10px;
}
.pb-showcase-bullets li i {
    color: var(--pb-accent);
    font-size: 0.9rem;
    flex-shrink: 0;
}

/* ==================== 卡片网格 (链接型) ==================== */
.pb-cards { background: var(--pb-bg-alt); }
.pb-cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 24px;
}
.pb-card-item {
    display: block;
    background: var(--pb-bg);
    border: 1px solid var(--pb-border);
    border-radius: var(--pb-radius-lg);
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    opacity: 0;
    animation: fadeInUp 0.5s ease-out forwards;
    transition: all var(--pb-transition);
}
.pb-card-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--pb-shadow-lg);
    border-color: var(--pb-primary);
}
.pb-card-img img {
    width: 100%;
    height: 180px;
    object-fit: cover;
}
.pb-card-body {
    padding: 24px 24px 28px;
}
.pb-card-body .pb-card-icon {
    width: 44px; height: 44px;
    margin-bottom: 14px;
    border-radius: 10px;
    background: var(--pb-primary-light);
    color: var(--pb-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.15rem;
    transition: all var(--pb-transition);
}
.pb-card-item:hover .pb-card-body .pb-card-icon {
    background: var(--pb-primary); color: #fff;
}
.pb-card-body h3 {
    font-size: 1.05rem;
    font-weight: 650;
    color: var(--pb-text);
    margin: 0 0 8px;
    transition: color var(--pb-transition);
}
.pb-card-item:hover .pb-card-body h3 { color: var(--pb-primary); }
.pb-card-body p {
    font-size: 0.9rem;
    color: var(--pb-text-secondary);
    line-height: 1.6;
    margin: 0;
}

/* ==================== 选项卡 ==================== */
.pb-tabs-section { background: var(--pb-bg); }
.pb-tab-nav {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 36px;
    flex-wrap: wrap;
}
.pb-tab {
    background: transparent;
    border: 1px solid var(--pb-border);
    padding: 10px 24px;
    border-radius: 50px;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--pb-text-secondary);
    cursor: pointer;
    transition: all var(--pb-transition);
}
.pb-tab:hover {
    border-color: var(--pb-accent);
    color: var(--pb-accent);
}
.pb-tab.active {
    background: var(--pb-primary);
    color: #fff;
    border-color: var(--pb-primary);
}
.pb-tab-panel { display: none; }
.pb-tab-panel.active { display: block; }
.pb-tab-panel-inner {
    display: flex;
    align-items: center;
    gap: 48px;
}
.pb-tab-image { flex: 1; }
.pb-tab-image img {
    width: 100%;
    border-radius: var(--pb-radius-lg);
    box-shadow: var(--pb-shadow);
}
.pb-tab-body { flex: 1; font-size: 1rem; color: var(--pb-text-secondary); line-height: 1.7; }

/* ==================== 数据统计 ==================== */
.pb-stats {
    background: var(--pb-bg-dark);
    color: #fff;
}
.pb-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 32px;
    text-align: center;
}
.pb-stat-card {
    opacity: 0;
    animation: statPopIn 0.6s ease-out forwards;
}
.pb-stat-icon { font-size: 1.8rem; margin-bottom: 16px; color: var(--pb-primary); opacity: 0.8; }
.pb-stat-num {
    font-size: clamp(28px, 5vw, 48px);
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 6px;
    color: #fff;
}
.pb-stat-label { font-size: 0.95rem; color: var(--pb-text-light); }

/* ==================== CTA ==================== */
.pb-cta { padding: 88px 0; text-align: center; background: var(--pb-bg); }
.pb-cta-box {
    background: var(--pb-bg-dark);
    border-radius: var(--pb-radius-lg);
    padding: 64px 40px;
    color: #fff;
    box-shadow: var(--pb-shadow-lg);
}
.pb-cta-box h2 {
    font-size: clamp(24px, 4vw, 36px);
    font-weight: 750;
    margin: 0 0 16px;
    letter-spacing: -0.02em;
    color: #fff;
}
.pb-cta-box p {
    font-size: 1.05rem;
    color: var(--pb-text-light);
    margin: 0 0 32px;
    line-height: 1.6;
    max-width: 560px;
    margin-left: auto;
    margin-right: auto;
}

/* ==================== 案例展示 ==================== */
.pb-testimonials { background: var(--pb-bg-alt); }
.pb-testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
}
.pb-testimonial-card {
    background: var(--pb-bg);
    border: 1px solid var(--pb-border);
    border-radius: var(--pb-radius-lg);
    padding: 28px;
    text-align: center;
    opacity: 0;
    animation: fadeInUp 0.5s ease-out forwards;
    transition: all var(--pb-transition);
}
.pb-testimonial-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--pb-shadow-lg);
    border-color: var(--pb-primary);
}
.pb-testimonial-logo {
    margin-bottom: 16px;
}
.pb-testimonial-logo img {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--pb-border);
}
.pb-testimonial-name {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--pb-text);
    margin-bottom: 12px;
}
.pb-testimonial-tags {
    display: flex;
    justify-content: center;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 14px;
}
.pb-testimonial-tags span {
    padding: 3px 12px;
    border-radius: 20px;
    font-size: 0.78rem;
    font-weight: 500;
    background: var(--pb-primary-light);
    color: var(--pb-primary);
}
.pb-testimonial-desc {
    font-size: 0.9rem;
    color: var(--pb-text-secondary);
    line-height: 1.6;
    margin: 0;
}

/* ==================== 按钮 ==================== */
.pb-btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--pb-primary);
    color: #fff;
    border: none;
    border-radius: var(--pb-radius-btn);
    padding: 14px 36px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s ease;
}
.pb-btn-primary:hover {
    background: var(--pb-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.15);
    color: #fff;
}
.pb-btn-outline {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: transparent;
    border: 2px solid rgba(255,255,255,0.3);
    color: #fff;
    border-radius: var(--pb-radius-btn);
    padding: 13px 36px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s ease;
}
.pb-btn-outline:hover {
    border-color: #fff;
    background: rgba(255,255,255,0.08);
    transform: translateY(-2px);
    color: #fff;
}
.pb-btn-lg { padding: 16px 42px; font-size: 1.05rem; }

/* ==================== 滚动动画 ==================== */
.pb-animate .pb-feature-card,
.pb-animate .pb-tag-chip,
.pb-animate .pb-showcase-item,
.pb-animate .pb-card-item,
.pb-animate .pb-stat-card,
.pb-animate .pb-testimonial-card {
    opacity: 0;
    animation: none;
}
.pb-visible .pb-feature-card,
.pb-visible .pb-tag-chip,
.pb-visible .pb-showcase-item,
.pb-visible .pb-card-item,
.pb-visible .pb-stat-card,
.pb-visible .pb-testimonial-card {
    animation: fadeInUp 0.55s ease-out forwards;
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(24px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes statPopIn {
    from { opacity: 0; transform: scale(0.9); }
    to { opacity: 1; transform: scale(1); }
}

/* ==================== 响应式 ==================== */

/* — 1440px+: 超大屏优化，卡片间距更大 — */
@media (min-width: 1440px) {
    .pb-hero-content { padding: 100px 60px; }
    .pb-hero-title { font-size: 68px; }
    .pb-hero-subtitle { font-size: 22px; max-width: 760px; }
    .pb-hero-highlights { gap: 28px; }
    .pb-hero-hl-card { padding: 34px 30px; }
    .pb-hero-hl-icon { width: 60px; height: 60px; min-width: 60px; border-radius: 16px; font-size: 1.4rem; }
    .pb-hero-hl-info strong { font-size: 1.1rem; }
    .pb-hero-hl-info span { font-size: 0.9rem; }
}

/* — 768px-1280px: 笔记本/小平板 — */
@media (max-width: 1280px) {
    .pb-hero-content { padding: 60px 32px; max-width: 960px; }
    .pb-hero-highlights { max-width: 860px; gap: 16px; }
    .pb-hero-orb--1 { width: 400px; height: 400px; }
    .pb-hero-orb--2 { width: 350px; height: 350px; }
    .pb-hero-arrow { width: 40px; height: 40px; font-size: 0.9rem; }
    .pb-hero-arrow--prev { left: 12px; }
    .pb-hero-arrow--next { right: 12px; }
}

@media (max-width: 1024px) {
    .pb-showcase-item,
    .pb-showcase-reverse {
        flex-direction: column;
        gap: 32px;
    }
    .pb-showcase-image { min-height: 240px; width: 100%; }
    .pb-tab-panel-inner { flex-direction: column; }
    /* 平板端亮点卡: 2x2 */
    .pb-hero-highlights {
        grid-template-columns: repeat(2, 1fr);
        max-width: 560px;
    }
    .pb-hero-hl-card { padding: 22px 18px; }
    .pb-hero-hl-icon { width: 44px; height: 44px; min-width: 44px; }
    .pb-hero-scroll-hint { display: none; }
    .pb-hero-dots { bottom: 36px; }
}

/* — 移动端 — */
@media (max-width: 768px) {
    .pb-section { padding: 64px 0; }
    .pb-section-header { margin-bottom: 40px; }
    .pb-features-grid { grid-template-columns: 1fr; }
    .pb-features-grid.pb-features-large { grid-template-columns: 1fr; }
    .pb-cards-grid { grid-template-columns: 1fr; }
    .pb-hero { min-height: auto; padding: 80px 0 60px; }
    .pb-hero-content { padding: 40px 20px; }
    .pb-hero-highlights {
        grid-template-columns: 1fr 1fr;
        gap: 12px;
        max-width: 100%;
    }
    .pb-hero-hl-card {
        flex-direction: column;
        text-align: center;
        padding: 20px 14px;
        gap: 12px;
    }
    .pb-hero-hl-info { text-align: center; }
    .pb-hero-title { font-size: clamp(28px, 8vw, 40px); }
    .pb-hero-btns { flex-direction: column; align-items: center; }
    .pb-cta-box { padding: 40px 24px; }
    .pb-hero-orb--1 { width: 280px; height: 280px; top: -10%; left: -20%; }
    .pb-hero-orb--2 { width: 240px; height: 240px; bottom: -15%; right: -25%; }
    .pb-hero-arrow { display: none; }
    .pb-hero-dots { bottom: 20px; }
    .pb-feature-card-glass { padding: 28px 20px; }
    .pb-feature-number { font-size: 2.2rem; }
}

@media (max-width: 480px) {
    .pb-hero-highlights { grid-template-columns: 1fr; }
    .pb-stats-grid { grid-template-columns: 1fr 1fr; }
    .pb-hero-content { padding: 48px 16px; }
    .pb-hero-top { margin-bottom: 32px; }
    .pb-hero-highlights { margin-bottom: 32px; }
    .pb-hero-orb { display: none; }
    .pb-btn-lg { padding: 14px 32px; font-size: 0.98rem; }
}