/* ===== 背景画布 ===== */
#bg-canvas {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    z-index: 0;
    pointer-events: none;
}

.page-content { position: relative; z-index: 1; }

/* ===== 导航栏 ===== */
.nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    padding: 0 2rem;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}
.nav.scrolled {
    background: rgba(6, 9, 26, 0.85);
    backdrop-filter: blur(24px) saturate(1.8);
    -webkit-backdrop-filter: blur(24px) saturate(1.8);
    border-bottom: 1px solid var(--border);
}
[data-theme="light"] .nav.scrolled {
    background: rgba(248, 250, 252, 0.85);
}

/* 主题切换按钮 */
.theme-toggle-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.3s;
}
.theme-toggle-btn:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
    border-color: rgba(79, 125, 243, 0.2);
}
.theme-toggle-btn--mobile {
    width: 100%;
    padding: 1rem;
    margin-top: 0.5rem;
    border-radius: 0;
    justify-content: flex-start;
    gap: 12px;
    border: none;
    border-top: 1px solid var(--border);
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    background: transparent;
}
.theme-toggle-text {
    font-family: inherit;
}
[data-theme="light"] .theme-toggle-btn--mobile {
    border-top-color: rgba(0, 0, 255, 0.08);
}

/* 主题图标显示逻辑 */
[data-theme="dark"] .theme-icon-light { display: none !important; }
[data-theme="dark"] .theme-icon-dark { display: block !important; }
[data-theme="light"] .theme-icon-light { display: block !important; }
[data-theme="light"] .theme-icon-dark { display: none !important; }
.nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}
.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}
.nav-logo-icon {
    width: 40px; height: 40px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--brand), var(--brand-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 24px rgba(79, 125, 243, 0.35);
}
.nav-logo-text {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}
.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
    list-style: none;
}
.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.3s;
    position: relative;
}
.nav-links a:hover { color: var(--text-primary); }
.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px; left: 50%; transform: translateX(-50%);
    width: 0; height: 2px;
    background: var(--brand);
    border-radius: 1px;
    transition: width 0.3s;
}
.nav-links a:hover::after { width: 100%; }
.nav-cta {
    padding: 10px 24px;
    background: linear-gradient(135deg, var(--brand), var(--brand-dark));
    color: #fff !important;
    border-radius: 10px;
    font-weight: 600;
    font-size: 0.88rem;
    transition: all 0.3s;
    box-shadow: 0 2px 16px rgba(79, 125, 243, 0.3);
}
.nav-cta:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 24px rgba(79, 125, 243, 0.45);
}
.nav-cta::after { display: none !important; }

.mobile-menu-btn {
    display: none;
    background: none; border: none; cursor: pointer;
    width: 40px; height: 40px;
    border-radius: 10px;
    align-items: center; justify-content: center;
    color: var(--text-secondary);
    transition: all 0.3s;
}
.mobile-menu-btn:hover { background: var(--bg-card); color: var(--text-primary); }

/* ===== 区块通用样式 ===== */
section { padding: 6rem 2rem; }
.container { max-width: 1200px; margin: 0 auto; }
.section-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: rgba(79, 125, 243, 0.1);
    border: 1px solid rgba(79, 125, 243, 0.2);
    border-radius: 100px;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--brand-light);
    margin-bottom: 1.5rem;
    letter-spacing: 0.04em;
}
[data-theme="light"] .section-label {
    background: rgba(79, 125, 243, 0.12);
    border-color: rgba(79, 125, 243, 0.25);
}
.section-title {
    font-size: clamp(2rem, 4vw, 2.8rem);
    font-weight: 800;
    line-height: 1.25;
    letter-spacing: -0.03em;
    margin-bottom: 1rem;
}
.section-desc {
    font-size: 1.05rem;
    color: var(--text-secondary);
    max-width: 600px;
    line-height: 1.8;
}

/* ===== 首屏区域 ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 72px;
    position: relative;
    overflow: hidden;
}
.hero-bg-glow {
    position: absolute;
    width: 800px; height: 800px;
    border-radius: 50%;
    filter: blur(160px);
    opacity: 0.12;
    pointer-events: none;
}
.hero-bg-glow--blue {
    background: var(--brand);
    top: -200px; right: -200px;
}
.hero-bg-glow--orange {
    background: var(--accent);
    bottom: -300px; left: -200px;
    opacity: 0.06;
}
.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}
.hero-content { position: relative; z-index: 2; }
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px 6px 8px;
    background: rgba(249, 115, 22, 0.1);
    border: 1px solid rgba(249, 115, 22, 0.25);
    border-radius: 100px;
    font-size: 0.82rem;
    font-weight: 500;
    color: #FB923C;
    margin-bottom: 2rem;
    animation: badge-pulse 3s ease-in-out infinite;
}
@keyframes badge-pulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(249, 115, 22, 0); }
    50% { box-shadow: 0 0 0 6px rgba(249, 115, 22, 0.08); }
}
.hero-badge-dot {
    width: 8px; height: 8px;
    background: #F97316;
    border-radius: 50%;
    animation: dot-blink 2s ease-in-out infinite;
}
@keyframes dot-blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}
.hero h1 {
    font-size: clamp(2.5rem, 5.5vw, 3.8rem);
    font-weight: 900;
    line-height: 1.15;
    letter-spacing: -0.04em;
    margin-bottom: 1.5rem;
}
.hero h1 .gradient-text {
    background: linear-gradient(135deg, var(--brand-light), var(--brand), #A78BFA);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero-desc {
    font-size: 1.15rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 2.5rem;
    max-width: 480px;
}
.hero-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 3rem;
}
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    border-radius: 14px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    border: none;
    transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
    font-family: inherit;
}
.btn-primary {
    background: linear-gradient(135deg, var(--brand), var(--brand-dark));
    color: #fff;
    box-shadow: 0 4px 24px rgba(79, 125, 243, 0.35), inset 0 1px 0 rgba(255,255,255,0.15);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 40px rgba(79, 125, 243, 0.5), inset 0 1px 0 rgba(255,255,255,0.15);
}
.btn-ghost {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border);
    backdrop-filter: blur(8px);
}
.btn-ghost:hover {
    background: var(--bg-card-hover);
    border-color: rgba(255,255,255,0.15);
    transform: translateY(-2px);
}
.hero-stats {
    display: flex;
    gap: 2.5rem;
}
.hero-stat-num {
    font-size: 1.8rem;
    font-weight: 800;
    font-family: 'JetBrains Mono', monospace;
    color: var(--text-primary);
}
.hero-stat-label {
    font-size: 0.82rem;
    color: var(--text-muted);
    margin-top: 2px;
}

/* 首屏视觉元素 */
.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}
.hero-mockup {
    position: relative;
    width: 100%;
    max-width: 560px;
    aspect-ratio: 16/11;
    background: linear-gradient(160deg, rgba(255,255,255,0.08) 0%, rgba(255,255,255,0.02) 100%);
    border-radius: 20px;
    border: 1px solid rgba(255,255,255,0.1);
    overflow: hidden;
    box-shadow: 0 40px 80px rgba(0,0,0,0.5), 0 0 0 1px rgba(255,255,255,0.05);
    animation: float 8s ease-in-out infinite;
}
[data-theme="light"] .hero-mockup {
    background: linear-gradient(160deg, rgba(0,0,255,0.05) 0%, rgba(0,0,255,0.02) 100%);
    border-color: rgba(0,0,255,0.1);
    box-shadow: 0 40px 80px rgba(79, 125, 243, 0.15), 0 0 0 1px rgba(0,0,255,0.05);
}
@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-12px); }
}
.mockup-topbar {
    height: 36px;
    background: rgba(255,255,255,0.06);
    border-bottom: 1px solid rgba(255,255,255,0.06);
    display: flex;
    align-items: center;
    padding: 0 14px;
    gap: 6px;
}
.mockup-dot {
    width: 10px; height: 10px;
    border-radius: 50%;
}
.mockup-dot--r { background: #FF5F57; }
.mockup-dot--y { background: #FFBD2E; }
.mockup-dot--g { background: #28C840; }
.mockup-body {
    display: flex;
    height: calc(100% - 36px);
}
.mockup-sidebar {
    width: 52px;
    background: rgba(255,255,255,0.03);
    border-right: 1px solid rgba(255,255,255,0.05);
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 12px 0;
    gap: 8px;
}
.mockup-sidebar-icon {
    width: 32px; height: 32px;
    border-radius: 8px;
    background: rgba(79, 125, 243, 0.15);
    display: flex;
    align-items: center;
    justify-content: center;
}
.mockup-sidebar-icon.active {
    background: linear-gradient(135deg, var(--brand), var(--brand-dark));
    box-shadow: 0 2px 8px rgba(79, 125, 243, 0.4);
}
.mockup-sidebar-icon svg { width: 16px; height: 16px; color: rgba(255,255,255,0.5); }
.mockup-sidebar-icon.active svg { color: #fff; }
.mockup-panel {
    width: 160px;
    background: rgba(255,255,255,0.02);
    border-right: 1px solid rgba(255,255,255,0.05);
    padding: 12px 8px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.mockup-account {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 8px;
    border-radius: 8px;
    transition: background 0.2s;
}
.mockup-account.active { background: rgba(79, 125, 243, 0.12); }
.mockup-account-avatar {
    width: 24px; height: 24px;
    border-radius: 6px;
    flex-shrink: 0;
}
.mockup-account-name {
    font-size: 10px;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.mockup-account.active .mockup-account-name { color: var(--text-primary); }
.mockup-main {
    flex: 1;
    padding: 12px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.mockup-toolbar {
    display: flex;
    gap: 6px;
}
.mockup-btn {
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 9px;
    font-weight: 600;
    color: #fff;
}
.mockup-btn--blue { background: linear-gradient(135deg, var(--brand), var(--brand-dark)); }
.mockup-btn--green { background: linear-gradient(135deg, #10B981, #059669); }
.mockup-btn--ghost {
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.08);
    color: var(--text-secondary);
}
.mockup-file-row {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 8px;
    border-radius: 6px;
    background: rgba(255,255,255,0.02);
    border: 1px solid transparent;
    transition: all 0.2s;
}
.mockup-file-row:nth-child(odd) { background: rgba(255,255,255,0.03); }
.mockup-file-icon {
    width: 20px; height: 20px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.mockup-file-name {
    font-size: 10px;
    color: var(--text-secondary);
    flex: 1;
}
.mockup-file-size {
    font-size: 9px;
    color: var(--text-muted);
    font-family: 'JetBrains Mono', monospace;
}

/* 悬浮网盘图标 */
.float-icons {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0; left: 0;
    pointer-events: none;
}
.float-icon {
    position: absolute;
    width: 48px; height: 48px;
    border-radius: 14px;
    background: rgba(255,255,255,0.06);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    box-shadow: 0 8px 24px rgba(0,0,0,0.3);
    animation: float-icon 6s ease-in-out infinite;
}
.float-icon:nth-child(1) { top: -10px; right: -20px; animation-delay: 0s; }
.float-icon:nth-child(2) { top: 30%; left: -30px; animation-delay: -1.5s; }
.float-icon:nth-child(3) { bottom: 20px; right: -15px; animation-delay: -3s; }
.float-icon:nth-child(4) { bottom: -10px; left: 20px; animation-delay: -4.5s; }
@keyframes float-icon {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-8px) rotate(3deg); }
}

/* ===== 支持的平台 ===== */
.platforms {
    padding: 3rem 2rem;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    background: rgba(79, 125, 243, 0.02);
}
[data-theme="light"] .platforms {
    background: rgba(79, 125, 243, 0.03);
    border-top-color: rgba(0, 0, 255, 0.08);
    border-bottom-color: rgba(0, 0, 255, 0.08);
}
.platforms-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 3.5rem;
    flex-wrap: wrap;
}
.platform-item {
    display: flex;
    align-items: center;
    gap: 10px;
    opacity: 0.45;
    transition: opacity 0.3s;
    cursor: default;
}
.platform-item:hover { opacity: 0.8; }
.platform-icon {
    width: 36px; height: 36px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}
.platform-name {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* ===== 核心功能 ===== */
.features .container { text-align: center; }
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-top: 3.5rem;
}
.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 2.5rem 2rem;
    text-align: left;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
    overflow: hidden;
}
.feature-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--brand), transparent);
    opacity: 0;
    transition: opacity 0.4s;
}
.feature-card:hover {
    background: var(--bg-card-hover);
    border-color: rgba(79, 125, 243, 0.2);
    transform: translateY(-4px);
    box-shadow: 0 20px 60px rgba(79, 125, 243, 0.08);
}
.feature-card:hover::before { opacity: 1; }
.feature-icon {
    width: 56px; height: 56px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
}
.feature-icon--blue { background: rgba(79, 125, 243, 0.12); color: var(--brand-light); }
.feature-icon--green { background: rgba(16, 185, 129, 0.12); color: #34D399; }
.feature-icon--orange { background: rgba(249, 115, 22, 0.12); color: #FB923C; }
.feature-icon--purple { background: rgba(139, 92, 246, 0.12); color: #A78BFA; }
.feature-icon--cyan { background: rgba(6, 182, 212, 0.12); color: #22D3EE; }
.feature-icon--rose { background: rgba(244, 63, 94, 0.12); color: #FB7185; }
.feature-title {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    letter-spacing: -0.01em;
}
.feature-desc {
    font-size: 0.92rem;
    color: var(--text-muted);
    line-height: 1.7;
}

/* ===== 产品展示 ===== */
.showcase { overflow: hidden; }
.showcase .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}
.showcase-screens {
    position: relative;
}
.showcase-screen {
    width: 100%;
    border-radius: 16px;
    border: 1px solid var(--border);
    background: var(--bg-card);
    overflow: hidden;
    box-shadow: 0 24px 64px rgba(0,0,0,0.4);
}
.showcase-screen-bar {
    height: 32px;
    background: rgba(255,255,255,0.04);
    border-bottom: 1px solid rgba(255,255,255,0.05);
    display: flex;
    align-items: center;
    padding: 0 12px;
    gap: 6px;
}
.showcase-screen-body {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.showcase-row {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    border-radius: 10px;
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.04);
}
.showcase-row-icon {
    width: 36px; height: 36px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.showcase-row-text {
    flex: 1;
}
.showcase-row-title {
    font-size: 0.85rem;
    font-weight: 600;
}
.showcase-row-sub {
    font-size: 0.75rem;
    color: var(--text-muted);
}
.showcase-row-badge {
    padding: 3px 10px;
    border-radius: 100px;
    font-size: 0.7rem;
    font-weight: 600;
}
.badge-green { background: rgba(16, 185, 129, 0.15); color: #34D399; }
.badge-orange { background: rgba(249, 115, 22, 0.15); color: #FB923C; }
.badge-red { background: rgba(244, 63, 94, 0.15); color: #FB7185; }

.showcase-content .section-desc { margin-bottom: 2rem; }
.showcase-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}
.showcase-list li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 0.95rem;
    color: var(--text-secondary);
}
.showcase-check {
    width: 24px; height: 24px;
    border-radius: 8px;
    background: rgba(79, 125, 243, 0.12);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    margin-top: 2px;
}

/* ===== 使用指南 ===== */
.how-it-works .container { text-align: center; }
.steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 3.5rem;
    position: relative;
}
.steps-grid::before {
    content: '';
    position: absolute;
    top: 48px;
    left: calc(16.67% + 1rem);
    right: calc(16.67% + 1rem);
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--border), var(--border), transparent);
}
.step-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    position: relative;
}
.step-num {
    width: 64px; height: 64px;
    border-radius: 20px;
    background: var(--bg-card);
    border: 2px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    font-weight: 800;
    font-family: 'JetBrains Mono', monospace;
    color: var(--brand-light);
    margin-bottom: 1.5rem;
    position: relative;
    z-index: 2;
    background: var(--bg-deep);
    transition: all 0.3s;
}
.step-card:hover .step-num {
    border-color: var(--brand);
    box-shadow: 0 0 24px rgba(79, 125, 243, 0.2);
}
.step-title {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}
.step-desc {
    font-size: 0.9rem;
    color: var(--text-muted);
    max-width: 280px;
}

/* ===== 定价方案 ===== */
.pricing .container { text-align: center; }
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-top: 3.5rem;
}
.pricing-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 24px;
    padding: 2.5rem 2rem;
    text-align: center;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
}
.pricing-card.featured {
    border-color: rgba(79, 125, 243, 0.3);
    background: linear-gradient(180deg, rgba(79, 125, 243, 0.06) 0%, var(--bg-card) 100%);
}
.pricing-card.featured::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--brand-light), var(--brand), var(--brand-dark));
    border-radius: 24px 24px 0 0;
}
.pricing-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 24px 64px rgba(0,0,0,0.2);
}
.pricing-popular {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    padding: 4px 16px;
    background: linear-gradient(135deg, var(--accent), #EA580C);
    color: #fff;
    font-size: 0.75rem;
    font-weight: 700;
    border-radius: 100px;
    white-space: nowrap;
}
.pricing-icon {
    width: 56px; height: 56px;
    border-radius: 16px;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}
.pricing-name {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}
.pricing-price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 4px;
    margin: 1.5rem 0;
}
.pricing-currency {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-secondary);
}
.pricing-amount {
    font-size: 3rem;
    font-weight: 900;
    font-family: 'JetBrains Mono', monospace;
    letter-spacing: -0.04em;
}
.pricing-period {
    font-size: 0.9rem;
    color: var(--text-muted);
}
.pricing-features {
    list-style: none;
    text-align: left;
    margin: 2rem 0;
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}
.pricing-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}
.pricing-features li svg {
    flex-shrink: 0;
}
.pricing-btn {
    display: block;
    width: 100%;
    padding: 14px;
    border-radius: 14px;
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    cursor: pointer;
    border: none;
    font-family: inherit;
    transition: all 0.3s;
}
.pricing-btn-primary {
    background: linear-gradient(135deg, var(--brand), var(--brand-dark));
    color: #fff;
    box-shadow: 0 4px 20px rgba(79, 125, 243, 0.3);
}
.pricing-btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 8px 32px rgba(79, 125, 243, 0.45);
}
.pricing-btn-ghost {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border);
}
.pricing-btn-ghost:hover {
    background: var(--bg-card-hover);
    border-color: rgba(255,255,255,0.15);
}

/* ===== 常见问题 ===== */
.faq .container { max-width: 800px; }
.faq-list {
    margin-top: 3rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}
.faq-item {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.3s;
}
.faq-item.open {
    border-color: rgba(79, 125, 243, 0.2);
}
.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem 1.5rem;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    text-align: left;
    transition: all 0.3s;
}
.faq-question:hover { background: var(--bg-card-hover); }
.faq-arrow {
    width: 24px; height: 24px;
    transition: transform 0.3s;
    color: var(--text-muted);
    flex-shrink: 0;
}
.faq-item.open .faq-arrow { transform: rotate(180deg); color: var(--brand); }
.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}
.faq-answer-inner {
    padding: 0 1.5rem 1.5rem;
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ===== 行动召唤 ===== */
.cta-section {
    text-align: center;
    position: relative;
    overflow: hidden;
}
.cta-glow {
    position: absolute;
    width: 600px; height: 600px;
    border-radius: 50%;
    background: var(--brand);
    filter: blur(200px);
    opacity: 0.08;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
}
.cta-section .container { position: relative; z-index: 2; }
.cta-section h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 900;
    letter-spacing: -0.03em;
    margin-bottom: 1rem;
}
.cta-section p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

/* ===== 页脚 ===== */
.footer {
    border-top: 1px solid var(--border);
    padding: 3rem 2rem;
}
[data-theme="light"] .footer {
    border-top-color: rgba(0, 0, 255, 0.08);
}
.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.footer-left {
    display: flex;
    align-items: center;
    gap: 12px;
}
.footer-copy {
    font-size: 0.85rem;
    color: var(--text-muted);
}
.footer-links {
    display: flex;
    gap: 2rem;
}
.footer-links a {
    color: var(--text-muted);
    font-size: 0.85rem;
    text-decoration: none;
    transition: color 0.3s;
}
.footer-links a:hover { color: var(--text-secondary); }

/* ===== 滚动动画 ===== */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }
.reveal-delay-5 { transition-delay: 0.5s; }

/* ===== 响应式布局 ===== */
@media (max-width: 1024px) {
    .hero .container { grid-template-columns: 1fr; text-align: center; }
    .hero-desc { margin-left: auto; margin-right: auto; }
    .hero-actions {
        justify-content: center;
        flex-wrap: wrap;
        gap: 10px;
    }
    .hero-actions .btn {
        padding: 10px 16px;
        font-size: 0.85rem;
    }
    .hero-stats { justify-content: center; }
    .hero-visual { margin-top: 3rem; }
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .showcase .container { grid-template-columns: 1fr; }
    .showcase-content { order: -1; text-align: center; }
    .showcase-content .section-desc { margin-left: auto; margin-right: auto; }
    .pricing-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
    section { padding: 4rem 1.5rem; }
    .nav-links { display: none; }
    .mobile-menu-btn { display: flex; }
    .hero { min-height: auto; padding-top: 120px; padding-bottom: 4rem; }
    .features-grid { grid-template-columns: 1fr; }
    .steps-grid { grid-template-columns: 1fr; gap: 2rem; }
    .steps-grid::before { display: none; }
    .pricing-grid { grid-template-columns: 1fr; max-width: 400px; margin-left: auto; margin-right: auto; }
    .hero-actions {
        flex-direction: row;
        flex-wrap: wrap;
        gap: 10px;
        align-items: flex-start;
        justify-content: center;
    }
    .hero-actions .btn {
        display: flex;
        padding: 10px 16px;
        font-size: 0.85rem;
        white-space: nowrap;
    }
    .hero-stats { flex-wrap: wrap; gap: 1.5rem; }
    .platforms-inner { gap: 2rem; }
    .footer-inner { flex-direction: column; gap: 1.5rem; text-align: center; }
    .mockup-panel { display: none; }
}

/* 移动端菜单 */
.mobile-nav {
    display: none;
    position: fixed;
    top: 72px; left: 0; right: 0; bottom: 0;
    background: rgba(6, 9, 26, 0.95);
    backdrop-filter: blur(24px);
    z-index: 99;
    padding: 2rem;
}
[data-theme="light"] .mobile-nav {
    background: rgba(248, 250, 252, 0.98);
}
.mobile-nav.open { display: block; }
.mobile-nav a {
    display: block;
    color: var(--text-primary);
    text-decoration: none;
    font-size: 1.2rem;
    font-weight: 600;
    padding: 1rem 0;
    border-bottom: 1px solid var(--border);
}