/* ==================== 基础样式 ==================== */
:root {
    --bg-primary: #0a0a1a;
    --bg-secondary: #0f0f23;
    --primary: #6366f1;
    --primary-light: #8b5cf6;
    --accent: #22d3ee;
    --accent-dark: #06b6d4;
    --text: #ffffff;
    --text-muted: rgba(255,255,255,0.6);
    --text-dim: rgba(255,255,255,0.4);
    --card-bg: rgba(255,255,255,0.05);
    --border: rgba(99,102,241,0.2);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background: var(--bg-primary);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ==================== 导航栏 ==================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 70px;
    background: rgba(10,10,26,0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.logo-icon {
    width: 32px;
    height: 40px;
}

.logo-text {
    font-size: 20px;
    font-weight: 700;
    color: var(--text);
}

.nav-links {
    display: flex;
    gap: 40px;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 15px;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: var(--text);
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

/* 语言选择器 */
.lang-selector {
    position: relative;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(99,102,241,0.1);
    border: 1px solid var(--border);
    border-radius: 20px;
    cursor: pointer;
    font-size: 14px;
}

.lang-icon { font-size: 16px; }
.lang-arrow { font-size: 10px; color: var(--text-muted); transition: transform 0.3s; }
.lang-selector:hover .lang-arrow { transform: rotate(180deg); }

.lang-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 10px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 8px 0;
    min-width: 150px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s;
    box-shadow: 0 20px 40px rgba(0,0,0,0.4);
}

.lang-selector:hover .lang-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-dropdown a {
    display: block;
    padding: 10px 20px;
    color: var(--text-muted);
    text-decoration: none;
    transition: all 0.2s;
}

.lang-dropdown a:hover,
.lang-dropdown a.active {
    background: rgba(99,102,241,0.2);
    color: var(--text);
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background: var(--text);
    transition: all 0.3s;
}

/* ==================== Hero区域 ==================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 100px 20px 60px;
    position: relative;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(ellipse 800px 600px at 50% 40%, rgba(99,102,241,0.15), transparent),
        radial-gradient(ellipse 600px 400px at 30% 60%, rgba(139,92,246,0.1), transparent),
        radial-gradient(ellipse 600px 400px at 70% 30%, rgba(34,211,238,0.05), transparent);
}

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

.hero-shield {
    margin-bottom: 30px;
}

.shield-svg {
    width: 120px;
    height: 150px;
    filter: drop-shadow(0 0 30px rgba(99,102,241,0.5));
    animation: float 4s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.hero-title {
    font-size: clamp(32px, 8vw, 56px);
    font-weight: 700;
    letter-spacing: 4px;
    margin-bottom: 20px;
}

.hero-subtitle {
    font-size: clamp(16px, 3vw, 22px);
    background: linear-gradient(90deg, var(--accent-dark), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 20px;
}

.hero-users {
    color: var(--text-muted);
    font-size: 16px;
    margin-bottom: 35px;
}

.hero-users strong {
    color: var(--accent);
    font-size: 20px;
}

.hero-btn {
    display: inline-block;
    padding: 18px 50px;
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
    color: var(--text);
    text-decoration: none;
    border-radius: 50px;
    font-size: 18px;
    font-weight: 600;
    box-shadow: 0 0 40px rgba(99,102,241,0.5);
    transition: all 0.3s;
    margin-bottom: 40px;
}

.hero-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 50px rgba(99,102,241,0.6);
}

.hero-badges {
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
}

.badge {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    font-size: 14px;
}

.badge-check {
    color: var(--accent);
}

/* ==================== 通用Section样式 ==================== */
.section-title {
    font-size: clamp(24px, 5vw, 36px);
    font-weight: 600;
    text-align: center;
    margin-bottom: 15px;
}

.section-desc {
    text-align: center;
    color: var(--text-muted);
    font-size: 16px;
    margin-bottom: 50px;
}

/* ==================== 视频区域 ==================== */
.video-section {
    padding: 100px 0;
}

.video-wrapper {
    max-width: 900px;
    margin: 0 auto;
}

.video-player {
    position: relative;
    aspect-ratio: 16/9;
    background: rgba(255,255,255,0.02);
    border: 1px solid var(--border);
    border-radius: 20px;
    overflow: hidden;
    margin: 0 auto;
    transition: all 0.4s ease;
}

/* 播放状态：切换为竖版视频比例 */
.video-player.video-playing {
    aspect-ratio: 9/16;
    max-width: 400px;
    max-height: 70vh;
}

.video-cover {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--bg-primary), var(--bg-secondary));
    cursor: pointer;
}

.play-btn {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: rgba(99,102,241,0.3);
    border: 2px solid var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s;
    margin-bottom: 20px;
}

.play-btn svg {
    width: 30px;
    height: 30px;
}

.play-btn:hover {
    background: rgba(99,102,241,0.5);
    transform: scale(1.1);
}

.video-lang {
    position: absolute;
    top: 15px;
    right: 15px;
    padding: 6px 15px;
    background: rgba(0,0,0,0.6);
    border: 1px solid var(--border);
    border-radius: 20px;
    font-size: 12px;
}

.video-note {
    text-align: center;
    color: var(--text-dim);
    font-size: 13px;
    margin-top: 20px;
}

/* ==================== 全球节点地图 ==================== */
.nodes-section {
    padding: 100px 0;
}

.world-map {
    max-width: 1000px;
    margin: 0 auto 50px;
    padding: 30px;
    background: rgba(255,255,255,0.02);
    border: 1px solid var(--border);
    border-radius: 24px;
}

.map-svg {
    width: 100%;
    height: auto;
}

/* 节点动画 */
.node-glow {
    fill: url(#nodeGlow1);
    animation: pulse 2s ease-in-out infinite;
}

.node:nth-child(even) .node-glow {
    fill: url(#nodeGlow2);
    animation-delay: 0.5s;
}

.node-dot {
    fill: var(--accent);
    filter: drop-shadow(0 0 10px var(--accent));
}

.node:nth-child(even) .node-dot {
    fill: var(--primary-light);
    filter: drop-shadow(0 0 10px var(--primary-light));
}

.node-label {
    fill: var(--accent);
    font-size: 13px;
    font-weight: 500;
    text-anchor: middle;
}

.node:nth-child(even) .node-label {
    fill: var(--primary-light);
}

@keyframes pulse {
    0%, 100% { opacity: 0.6; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.1); }
}

/* 连接线动画 */
.conn-line {
    stroke-dasharray: 6 4;
    animation: dash 20s linear infinite;
    opacity: 0.5;
}

@keyframes dash {
    to { stroke-dashoffset: -1000; }
}

/* 统计数据 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    text-align: center;
}

.stat-item {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.stat-value {
    font-size: clamp(24px, 4vw, 32px);
    font-weight: 700;
}

.stat-value.cyan { color: var(--accent); }
.stat-value.purple { color: var(--primary-light); }

.stat-label {
    color: var(--text-muted);
    font-size: 14px;
}

/* ==================== 警示区 ==================== */
.warning-section {
    padding: 60px 0;
}

.warning-box {
    max-width: 960px;
    margin: 0 auto;
    padding: 40px;
    background: rgba(239,68,68,0.06);
    border: 1px solid rgba(239,68,68,0.2);
    border-radius: 24px;
    text-align: center;
}

.warning-icon {
    font-size: 40px;
    margin-bottom: 20px;
}

.warning-box h3 {
    font-size: 26px;
    color: #f87171;
    margin-bottom: 20px;
}

.warning-box p {
    color: var(--text-muted);
    font-size: 16px;
    margin-bottom: 10px;
}

.warning-cta {
    color: var(--accent) !important;
    font-weight: 500;
    margin-top: 20px !important;
}

/* ==================== 特点区 ==================== */
.features-section {
    padding: 100px 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.feature-card {
    background: var(--card-bg);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: 20px;
    padding: 40px 30px;
    text-align: center;
    transition: all 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: var(--border);
    box-shadow: 0 20px 40px rgba(99,102,241,0.1);
}

.feature-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 25px;
}

.feature-icon svg {
    width: 100%;
    height: 100%;
}

.feature-card h3 {
    font-size: 22px;
    margin-bottom: 12px;
}

.feature-card p {
    color: var(--text-muted);
    font-size: 14px;
    margin-bottom: 15px;
}

.feature-highlight {
    color: var(--accent);
    font-size: 14px;
    font-weight: 500;
}

/* ==================== 下载与订阅一体化区 ==================== */
.getstart-section {
    padding: 100px 0;
    position: relative;
}

/* 平台 Tab 导航 */
.gs-tabs {
    display: flex;
    gap: 8px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.gs-tab {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: var(--card-bg);
    border: 1px solid rgba(255,255,255,0.07);
    border-radius: 50px;
    color: var(--text-muted);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.25s;
    white-space: nowrap;
}

.gs-tab-svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    color: currentColor;
}

.gs-tab:hover {
    border-color: var(--border);
    color: var(--text);
}

.gs-tab.active {
    background: rgba(99,102,241,0.15);
    border-color: var(--primary);
    color: var(--text);
}

/* 主内容区两栏布局 */
.gs-body {
    display: grid;
    grid-template-columns: 1fr 340px;
    gap: 30px;
    align-items: start;
}

/* ---- 左侧：客户端列表 ---- */
.gs-section-label {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 12px;
    margin-top: 20px;
}

.gs-section-label:first-child {
    margin-top: 0;
}

/* 官方客户端卡片 */
.gs-own-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 18px 22px;
    background: rgba(99,102,241,0.08);
    border: 1px solid rgba(99,102,241,0.3);
    border-radius: 16px;
    margin-bottom: 6px;
}

.gs-own-icon {
    font-size: 32px;
    flex-shrink: 0;
}

.gs-own-info {
    flex: 1;
    min-width: 0;
}

.gs-own-name {
    font-size: 17px;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 4px;
}

.gs-own-desc {
    font-size: 13px;
    color: var(--text-muted);
}

/* 三方客户端列表 */
.gs-client-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.gs-client-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 16px 20px;
    background: var(--card-bg);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: 14px;
    transition: border-color 0.2s;
}

.gs-client-item:hover {
    border-color: var(--border);
}

.gs-client-meta {
    flex: 1;
    min-width: 0;
}

.gs-client-name {
    font-size: 15px;
    font-weight: 600;
    vertical-align: middle;
}

.gs-client-desc {
    display: block;
    font-size: 12px;
    color: var(--text-dim);
    margin-top: 3px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.gs-client-btns {
    display: flex;
    gap: 8px;
    flex-shrink: 0;
}

/* 通用徽章 */
.gs-badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 500;
    background: rgba(255,255,255,0.08);
    color: var(--text-dim);
    vertical-align: middle;
}

.gs-badge-official {
    background: rgba(99,102,241,0.2);
    color: var(--primary-light);
}

/* 通用按钮 */
.gs-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 8px 14px;
    border-radius: 10px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    border: none;
    transition: all 0.25s;
    white-space: nowrap;
    color: var(--text);
}

.gs-btn-primary {
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
    box-shadow: 0 4px 20px rgba(99,102,241,0.35);
    padding: 10px 22px;
    font-size: 14px;
}

.gs-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(99,102,241,0.5);
}

.gs-btn-ghost {
    background: transparent;
    border: 1px solid rgba(255,255,255,0.12);
    color: var(--text-muted);
}

.gs-btn-ghost:hover {
    border-color: var(--border);
    color: var(--text);
    background: rgba(99,102,241,0.08);
}

.gs-btn-import {
    background: linear-gradient(90deg, var(--accent-dark), var(--accent));
    color: #0a0a1a;
    font-weight: 600;
}

.gs-btn-import:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(34,211,238,0.35);
}

.gs-btn-sm {
    padding: 6px 10px;
    font-size: 11px;
}

.gs-btn-loading {
    background: rgba(255,255,255,0.08) !important;
    color: var(--text-dim) !important;
    box-shadow: none !important;
    cursor: default;
    pointer-events: none;
}

/* ---- 右侧：订阅信息 ---- */
.gs-right {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    position: sticky;
    top: 90px;
}

.gs-qr-wrap {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.gs-qrcode {
    width: 160px;
    height: 160px;
    background: #fff;
    border-radius: 12px;
    padding: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 24px rgba(99,102,241,0.2);
}

.gs-qr-tip {
    color: var(--text-dim);
    font-size: 12px;
}

/* 格式 Tab */
.gs-fmt-tabs {
    display: flex;
    gap: 6px;
}

.gs-fmt-tab {
    flex: 1;
    padding: 7px 4px;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.07);
    border-radius: 8px;
    color: var(--text-muted);
    font-size: 12px;
    cursor: pointer;
    transition: all 0.2s;
}

.gs-fmt-tab:hover {
    color: var(--text);
    border-color: var(--border);
}

.gs-fmt-tab.active {
    background: rgba(99,102,241,0.15);
    border-color: var(--primary);
    color: var(--text);
}

/* 订阅地址输入框 */
.gs-url-box {
    display: flex;
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid var(--border);
}

.gs-url-input {
    flex: 1;
    padding: 10px 12px;
    background: rgba(255,255,255,0.03);
    border: none;
    color: var(--text-muted);
    font-size: 11px;
    font-family: 'Courier New', monospace;
    outline: none;
    min-width: 0;
}

.gs-url-copy {
    padding: 10px 16px;
    background: rgba(99,102,241,0.2);
    border: none;
    color: var(--text);
    font-size: 12px;
    cursor: pointer;
    transition: background 0.2s;
    white-space: nowrap;
}

.gs-url-copy:hover {
    background: rgba(99,102,241,0.4);
}

/* 格式适用提示 */
.gs-fmt-tip {
    font-size: 11px;
    color: var(--text-dim);
    line-height: 1.5;
    text-align: center;
    padding: 0 4px;
}

/* 响应式 */
@media (max-width: 1024px) {
    .gs-body {
        grid-template-columns: 1fr 300px;
    }
}

@media (max-width: 768px) {
    .gs-body {
        grid-template-columns: 1fr;
    }

    .gs-right {
        position: static;
        order: -1; /* 移动端订阅信息在上 */
    }

    .gs-qrcode {
        width: 130px;
        height: 130px;
    }

    .gs-tabs {
        gap: 6px;
    }

    .gs-tab {
        padding: 8px 14px;
        font-size: 13px;
    }

    .gs-client-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }

    .gs-client-btns {
        width: 100%;
    }

    .gs-btn-ghost,
    .gs-btn-import {
        flex: 1;
        text-align: center;
    }

    .gs-own-card {
        flex-wrap: wrap;
    }
}

/* ==================== CTA区 ==================== */
.cta-section {
    padding: 80px 0;
}

.cta-box {
    max-width: 960px;
    margin: 0 auto;
    padding: 60px 40px;
    background: rgba(99,102,241,0.08);
    border: 1px solid var(--border);
    border-radius: 28px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-box::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse 400px 200px at 50% 50%, rgba(99,102,241,0.2), transparent);
}

.cta-box h2 {
    font-size: clamp(24px, 5vw, 32px);
    margin-bottom: 15px;
    position: relative;
}

.cta-box p {
    color: var(--text-muted);
    margin-bottom: 30px;
    position: relative;
}

.cta-btn {
    display: inline-block;
    padding: 20px 60px;
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
    color: var(--text);
    text-decoration: none;
    border-radius: 50px;
    font-size: 20px;
    font-weight: 600;
    box-shadow: 0 0 50px rgba(99,102,241,0.5);
    transition: all 0.3s;
    position: relative;
}

.cta-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 60px rgba(99,102,241,0.6);
}

/* ==================== FAQ区 ==================== */
.faq-section {
    padding: 100px 0;
}

.faq-list {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background: var(--card-bg);
    border: 1px solid rgba(255,255,255,0.05);
    border-radius: 16px;
    margin-bottom: 15px;
    overflow: hidden;
}

.faq-q {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 25px 30px;
    cursor: pointer;
    transition: background 0.3s;
}

.faq-q:hover {
    background: rgba(255,255,255,0.02);
}

.faq-q span:first-child {
    color: var(--primary-light);
    font-weight: 600;
    font-size: 17px;
}

.faq-q span:nth-child(2) {
    flex: 1;
    font-size: 16px;
}

.faq-toggle {
    color: var(--text-dim);
    font-size: 22px;
    transition: transform 0.3s;
}

.faq-item.active .faq-toggle {
    transform: rotate(45deg);
}

.faq-a {
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s;
    padding: 0 30px;
    color: var(--text-muted);
    font-size: 15px;
    line-height: 1.8;
}

.faq-item.active .faq-a {
    max-height: 200px;
    padding: 0 30px 25px;
}

/* ==================== Footer ==================== */
.footer {
    padding: 50px 0;
    background: rgba(5,5,15,0.6);
    border-top: 1px solid rgba(99,102,241,0.1);
    text-align: center;
}

.footer-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-bottom: 25px;
}

.footer-logo-icon {
    width: 30px;
    height: 38px;
}

.footer-logo span {
    font-size: 20px;
    font-weight: 600;
}

.footer-langs {
    color: var(--text-dim);
    font-size: 12px;
    margin-bottom: 20px;
}

.footer-copy {
    color: var(--text-dim);
    font-size: 13px;
    margin-bottom: 8px;
}

.footer-slogan {
    color: rgba(255,255,255,0.2);
    font-size: 12px;
}

/* ==================== 移动端菜单 ==================== */
.mobile-menu {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 15px;
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
    z-index: 999;
}

.mobile-menu.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
}

.mobile-menu a {
    color: var(--text);
    text-decoration: none;
    font-size: 16px;
    padding: 10px 0;
    border-bottom: 1px solid var(--border);
}

/* ==================== 响应式设计 ==================== */
@media (max-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 25px 40px;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .lang-selector {
        padding: 6px 12px;
    }
    
    .lang-current {
        display: none;
    }
    
    .hero {
        padding: 100px 20px 50px;
    }
    
    .shield-svg {
        width: 90px;
        height: 112px;
    }
    
    .hero-badges {
        gap: 15px;
    }
    
    .badge {
        font-size: 12px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .warning-box {
        padding: 30px 20px;
    }
    
    .warning-box h3 {
        font-size: 20px;
    }
    
    .warning-box p {
        font-size: 14px;
    }
    
    .cta-box {
        padding: 40px 25px;
    }
    
    .cta-btn {
        padding: 16px 40px;
        font-size: 18px;
    }
    
    .faq-q {
        padding: 20px;
    }
    
    .faq-q span:nth-child(2) {
        font-size: 14px;
    }
    
    .world-map {
        padding: 15px;
    }

    .video-player.video-playing {
        max-width: 85vw;
        max-height: 75vh;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .stat-value {
        font-size: 24px;
    }
    
    .hero-btn {
        padding: 16px 40px;
        font-size: 16px;
    }
}

/* ==================== 隐私政策页面 ==================== */
.privacy-section {
    padding: 120px 0 80px;
    min-height: calc(100vh - 200px);
}

.privacy-header {
    text-align: center;
    margin-bottom: 60px;
}

.privacy-icon {
    margin-bottom: 24px;
    filter: drop-shadow(0 0 30px rgba(99,102,241,0.4));
}

.privacy-header h1 {
    font-size: clamp(28px, 6vw, 42px);
    font-weight: 700;
    margin-bottom: 12px;
    background: linear-gradient(90deg, var(--text), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.privacy-date {
    color: var(--text-dim);
    font-size: 15px;
}

.privacy-content {
    max-width: 860px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.privacy-card {
    position: relative;
    background: var(--card-bg);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: 20px;
    padding: 36px 36px 36px 80px;
    transition: all 0.3s;
}

.privacy-card:hover {
    border-color: var(--border);
    box-shadow: 0 10px 30px rgba(99,102,241,0.08);
}

.privacy-card-num {
    position: absolute;
    left: 24px;
    top: 36px;
    width: 40px;
    height: 40px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    font-weight: 700;
    color: var(--text);
    flex-shrink: 0;
}

.privacy-card h2 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 14px;
    color: var(--text);
}

.privacy-card p {
    color: var(--text-muted);
    font-size: 15px;
    line-height: 1.85;
}

.privacy-footer-note {
    text-align: center;
    margin-top: 50px;
}

.privacy-back-btn {
    display: inline-block;
    padding: 14px 40px;
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
    color: var(--text);
    text-decoration: none;
    border-radius: 50px;
    font-size: 16px;
    font-weight: 500;
    box-shadow: 0 0 30px rgba(99,102,241,0.3);
    transition: all 0.3s;
}

.privacy-back-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 40px rgba(99,102,241,0.5);
}

/* 隐私政策页面响应式 */
@media (max-width: 768px) {
    .privacy-section {
        padding: 100px 0 60px;
    }

    .privacy-card {
        padding: 28px 20px 28px 64px;
    }

    .privacy-card-num {
        left: 16px;
        top: 28px;
        width: 36px;
        height: 36px;
        font-size: 14px;
        border-radius: 10px;
    }

    .privacy-card h2 {
        font-size: 18px;
    }

    .privacy-card p {
        font-size: 14px;
    }
}

@media (max-width: 480px) {
    .privacy-card {
        padding: 24px 16px 24px 56px;
    }

    .privacy-card-num {
        left: 12px;
        top: 24px;
        width: 32px;
        height: 32px;
        font-size: 13px;
    }
}

/* ==================== 技术支持页面 ==================== */
.support-section {
    padding: 120px 0 80px;
    min-height: calc(100vh - 200px);
}

.support-header {
    text-align: center;
    margin-bottom: 60px;
}

.support-icon {
    margin-bottom: 24px;
    filter: drop-shadow(0 0 30px rgba(99,102,241,0.4));
}

.support-header h1 {
    font-size: clamp(28px, 6vw, 42px);
    font-weight: 700;
    margin-bottom: 12px;
    background: linear-gradient(90deg, var(--text), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.support-subtitle {
    color: var(--text-dim);
    font-size: 16px;
}

.support-content {
    max-width: 860px;
    margin: 0 auto 60px;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.support-card {
    background: var(--card-bg);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: 20px;
    padding: 32px 28px;
    transition: all 0.3s;
}

.support-card:hover {
    border-color: var(--border);
    box-shadow: 0 10px 30px rgba(99,102,241,0.08);
}

.support-card-icon {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    background: rgba(99,102,241,0.12);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.support-card h2 {
    font-size: 19px;
    font-weight: 600;
    margin-bottom: 14px;
    color: var(--text);
}

.support-card p {
    color: var(--text-muted);
    font-size: 14px;
    line-height: 1.85;
}

.support-faq {
    max-width: 860px;
    margin: 0 auto 50px;
}

.support-faq-title {
    font-size: clamp(24px, 5vw, 32px);
    font-weight: 600;
    text-align: center;
    margin-bottom: 30px;
}

.support-footer-note {
    text-align: center;
    margin-top: 50px;
}

@media (max-width: 768px) {
    .support-section {
        padding: 100px 0 60px;
    }

    .support-content {
        grid-template-columns: 1fr;
    }

    .support-card {
        padding: 24px 20px;
    }

    .support-card h2 {
        font-size: 17px;
    }
}

/* Footer链接分隔符 */
.footer-link-sep {
    color: var(--text-dim);
    margin: 0 12px;
    font-size: 13px;
}

/* Footer隐私政策链接 */
.footer-links {
    margin-bottom: 16px;
}

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 13px;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: var(--accent);
}

/* RTL支持（阿拉伯语） */
[dir="rtl"] .nav-links { flex-direction: row-reverse; }
[dir="rtl"] .badge { flex-direction: row-reverse; }
[dir="rtl"] .faq-q { flex-direction: row-reverse; }
[dir="rtl"] .lang-dropdown { right: auto; left: 0; }
[dir="rtl"] .privacy-card { padding: 36px 80px 36px 36px; }
[dir="rtl"] .privacy-card-num { left: auto; right: 24px; }
[dir="rtl"] .support-card { text-align: right; }

@media (max-width: 768px) {
    [dir="rtl"] .privacy-card { padding: 28px 64px 28px 20px; }
    [dir="rtl"] .privacy-card-num { left: auto; right: 16px; }
}

@media (max-width: 480px) {
    [dir="rtl"] .privacy-card { padding: 24px 56px 24px 16px; }
    [dir="rtl"] .privacy-card-num { left: auto; right: 12px; }
}