/* ============================================================
   SafeW 首页样式 - css/index.css
   版本: V3.2.1 · 2026 安全补丁覆盖
   描述: 端到端加密通讯工具 SafeW 官方首页样式
   ============================================================ */

/* CSS 变量定义 */
:root {
    /* 品牌色 */
    --safe-teal: #00c9a7;
    --safe-teal-dark: #009f86;
    --safe-teal-glow: rgba(0, 201, 167, 0.2);
    --safe-teal-light: #e6f7f3;
    --safe-navy: #0b2b4a;
    --safe-navy-light: #1a3b5c;
    --safe-slate: #3a5268;
    --safe-slate-light: #4a6278;
    --safe-mist: #f0f7fa;
    --safe-mist-dark: #e6f0f5;
    --safe-white: #ffffff;

    /* 中性色 */
    --safe-border: rgba(0, 0, 0, 0.04);
    --safe-border-strong: rgba(0, 0, 0, 0.08);

    /* 阴影 */
    --safe-shadow-sm: 0 4px 16px rgba(0, 0, 0, 0.04);
    --safe-shadow-md: 0 8px 30px rgba(0, 0, 0, 0.06);
    --safe-shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.08);
    --safe-shadow-teal: 0 6px 20px rgba(0, 201, 167, 0.25);

    /* 圆角 */
    --safe-radius-sm: 12px;
    --safe-radius-md: 18px;
    --safe-radius-lg: 24px;
    --safe-radius-xl: 32px;
    --safe-radius-full: 50px;

    /* 过渡 */
    --safe-transition: 0.25s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --safe-transition-slow: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);

    /* 字体 */
    --safe-font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    --safe-font-mono: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
}

/* 全局重置与基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--safe-font);
    background: #f8fbfc;
    color: #1a2a3a;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--safe-transition);
}

ul {
    list-style: none;
}

img,
svg {
    display: block;
    max-width: 100%;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ========== 导航栏 ========== */
.navbar {
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--safe-border);
    padding: 12px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: box-shadow 0.3s ease;
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 22px;
    font-weight: 700;
    color: var(--safe-navy);
    letter-spacing: -0.3px;
    white-space: nowrap;
}

.nav-brand svg {
    flex-shrink: 0;
}

.nav-brand .version-tag {
    font-size: 11px;
    font-weight: 500;
    background: var(--safe-teal);
    color: #fff;
    padding: 2px 10px;
    border-radius: 20px;
    margin-left: 2px;
    letter-spacing: 0.3px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 18px;
    list-style: none;
}

.nav-links > li {
    position: relative;
}

.nav-links a {
    font-size: 15px;
    font-weight: 500;
    color: #2c3e50;
    padding: 6px 0;
    position: relative;
    transition: color var(--safe-transition);
    white-space: nowrap;
}

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

.nav-links a.active {
    color: var(--safe-teal);
}

.nav-links a.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--safe-teal);
    border-radius: 2px;
}

.nav-cta {
    background: linear-gradient(135deg, var(--safe-teal), var(--safe-teal-dark));
    padding: 8px 22px;
    border-radius: 30px;
    font-weight: 600;
    color: #fff !important;
    transition: transform 0.2s, box-shadow 0.2s;
    box-shadow: var(--safe-shadow-teal);
    display: inline-block;
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 201, 167, 0.35);
    color: #fff !important;
}

/* 更多下拉菜单 */
.nav-more {
    position: relative;
}

.nav-more-btn {
    background: none;
    border: none;
    font-size: 15px;
    font-weight: 500;
    color: #2c3e50;
    cursor: pointer;
    padding: 6px 0;
    display: flex;
    align-items: center;
    gap: 4px;
    transition: color var(--safe-transition);
    font-family: var(--safe-font);
}

.nav-more-btn:hover {
    color: var(--safe-teal);
}

.nav-dropdown {
    display: none;
    position: absolute;
    top: 100%;
    left: -20px;
    background: #fff;
    border-radius: var(--safe-radius-md);
    box-shadow: var(--safe-shadow-lg);
    border: 1px solid var(--safe-border-strong);
    padding: 12px 0;
    min-width: 180px;
    z-index: 1001;
    margin-top: 8px;
}

.nav-dropdown.open {
    display: block;
    animation: fadeInDown 0.2s ease;
}

.nav-dropdown li {
    list-style: none;
}

.nav-dropdown a {
    display: block;
    padding: 8px 24px;
    font-size: 14px;
    color: #2c3e50;
    transition: background 0.15s, color 0.15s;
}

.nav-dropdown a:hover {
    background: rgba(0, 201, 167, 0.08);
    color: var(--safe-teal);
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 移动端汉堡按钮 */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    z-index: 1002;
}

.nav-toggle span {
    display: block;
    width: 26px;
    height: 2.5px;
    background: var(--safe-navy);
    border-radius: 3px;
    transition: 0.3s;
}

/* ========== 英雄区 ========== */
.hero {
    background: linear-gradient(145deg, #f0f7fa, #e6f0f5);
    padding: 70px 0 60px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -80px;
    right: -80px;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(0, 201, 167, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -100px;
    left: -100px;
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, rgba(0, 201, 167, 0.07) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 50px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(0, 201, 167, 0.12);
    color: var(--safe-teal-dark);
    font-weight: 600;
    font-size: 14px;
    padding: 6px 16px;
    border-radius: 30px;
    margin-bottom: 20px;
    letter-spacing: 0.2px;
}

.eyebrow-dot {
    width: 8px;
    height: 8px;
    background: var(--safe-teal);
    border-radius: 50%;
    display: inline-block;
    animation: pulse-dot 1.8s infinite;
}

@keyframes pulse-dot {
    0% { box-shadow: 0 0 0 0 rgba(0, 201, 167, 0.5); }
    70% { box-shadow: 0 0 0 8px rgba(0, 201, 167, 0); }
    100% { box-shadow: 0 0 0 0 rgba(0, 201, 167, 0); }
}

.hero-content h1 {
    font-size: 48px;
    font-weight: 800;
    line-height: 1.15;
    color: var(--safe-navy);
    margin-bottom: 16px;
    letter-spacing: -0.8px;
}

.hero-content h1 span {
    color: var(--safe-teal);
    position: relative;
    display: inline-block;
}

.hero-content h1 span::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 0;
    right: 0;
    height: 10px;
    background: rgba(0, 201, 167, 0.2);
    z-index: -1;
    border-radius: 4px;
}

.hero-lead {
    font-size: 18px;
    color: var(--safe-slate);
    margin-bottom: 30px;
    line-height: 1.7;
    max-width: 550px;
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 28px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--safe-teal), var(--safe-teal-dark));
    padding: 14px 32px;
    border-radius: 40px;
    font-weight: 600;
    color: #fff;
    border: none;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    box-shadow: var(--safe-shadow-teal);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 16px;
    font-family: var(--safe-font);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 30px rgba(0, 201, 167, 0.4);
}

.btn-secondary {
    background: rgba(11, 43, 74, 0.06);
    padding: 14px 28px;
    border-radius: 40px;
    font-weight: 500;
    color: var(--safe-navy);
    border: 1px solid rgba(11, 43, 74, 0.1);
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    font-size: 16px;
    font-family: var(--safe-font);
}

.btn-secondary:hover {
    background: rgba(11, 43, 74, 0.1);
    border-color: rgba(11, 43, 74, 0.2);
    transform: translateY(-2px);
}

.hero-trust {
    display: flex;
    flex-wrap: wrap;
    gap: 18px;
    font-size: 14px;
    color: var(--safe-slate);
}

.hero-trust span {
    display: flex;
    align-items: center;
    gap: 4px;
    font-weight: 500;
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    min-height: 400px;
}

.hero-orb {
    position: relative;
    width: 280px;
    height: 280px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.orb-ring {
    position: absolute;
    border: 2px dashed rgba(0, 201, 167, 0.4);
    border-radius: 50%;
    animation: spin 20s linear infinite;
}

.ring-1 {
    width: 280px;
    height: 280px;
}

.ring-2 {
    width: 220px;
    height: 220px;
    animation-duration: 15s;
    animation-direction: reverse;
}

.ring-3 {
    width: 160px;
    height: 160px;
    animation-duration: 10s;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.orb-core {
    width: 100px;
    height: 100px;
    background: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 40px rgba(0, 201, 167, 0.3);
    z-index: 2;
    animation: float 4s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-12px); }
}

.orb-node {
    position: absolute;
    width: 14px;
    height: 14px;
    background: var(--safe-teal);
    border-radius: 50%;
    box-shadow: 0 0 12px rgba(0, 201, 167, 0.6);
    z-index: 3;
}

.node-1 { top: 20px; left: 40%; animation: float 3s ease-in-out infinite; }
.node-2 { top: 40%; right: 10px; animation: float 4.5s ease-in-out infinite 0.5s; }
.node-3 { bottom: 20px; left: 30%; animation: float 3.5s ease-in-out infinite 1s; }
.node-4 { bottom: 30%; left: 8px; animation: float 5s ease-in-out infinite 0.3s; }
.node-5 { top: 10%; right: 20%; animation: float 4s ease-in-out infinite 1.5s; }
.node-6 { bottom: 5%; right: 35%; animation: float 3.8s ease-in-out infinite 0.8s; }

.hero-floating-card {
    position: absolute;
    background: #fff;
    border-radius: var(--safe-radius-md);
    padding: 14px 18px;
    box-shadow: var(--safe-shadow-md);
    display: flex;
    align-items: center;
    gap: 12px;
    z-index: 5;
    animation: float 5s ease-in-out infinite;
    border: 1px solid var(--safe-border);
}

.hero-floating-card.card-bottom {
    bottom: 30px;
    right: 10px;
    animation-delay: 1.5s;
}

.hero-floating-card:not(.card-bottom) {
    top: 30px;
    left: 10px;
}

.floating-icon {
    font-size: 26px;
}

.floating-text {
    display: flex;
    flex-direction: column;
}

.floating-text strong {
    font-size: 14px;
    color: var(--safe-navy);
}

.floating-text span {
    font-size: 12px;
    color: var(--safe-slate-light);
}

/* ========== 信任条 ========== */
.trust-bar {
    background: #fff;
    border-bottom: 1px solid var(--safe-border);
    padding: 14px 0;
}

.trust-bar-inner {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 16px;
    font-size: 14px;
    color: var(--safe-slate);
}

.trust-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-weight: 500;
}

.trust-divider {
    width: 1px;
    height: 18px;
    background: var(--safe-border-strong);
}

/* ========== 通用区块标题 ========== */
.section-title {
    text-align: center;
    margin-bottom: 48px;
}

.section-tag {
    display: inline-block;
    font-size: 14px;
    font-weight: 600;
    color: var(--safe-teal-dark);
    background: rgba(0, 201, 167, 0.1);
    padding: 4px 16px;
    border-radius: 20px;
    margin-bottom: 12px;
    letter-spacing: 0.3px;
}

.section-tag.light {
    background: rgba(255, 255, 255, 0.2);
    color: #fff;
}

.section-title h2 {
    font-size: 34px;
    font-weight: 700;
    color: var(--safe-navy);
    margin-bottom: 10px;
    letter-spacing: -0.3px;
}

.section-title p {
    color: var(--safe-slate);
    font-size: 17px;
    max-width: 650px;
    margin: 0 auto;
}

/* ========== 核心价值 ========== */
.value-section {
    padding: 70px 0;
    background: #fff;
}

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

.value-card {
    background: #fff;
    border-radius: var(--safe-radius-lg);
    padding: 32px 28px;
    box-shadow: var(--safe-shadow-sm);
    border: 1px solid var(--safe-border);
    transition: transform 0.25s, box-shadow 0.25s, border-color 0.25s;
    display: flex;
    flex-direction: column;
}

.value-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--safe-shadow-md);
    border-color: rgba(0, 201, 167, 0.25);
}

.value-card .icon {
    font-size: 36px;
    margin-bottom: 14px;
    display: block;
}

.value-card h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--safe-navy);
    margin-bottom: 8px;
}

.value-card p {
    color: var(--safe-slate);
    font-size: 15px;
    line-height: 1.7;
    flex-grow: 1;
    margin-bottom: 16px;
}

.card-link {
    color: var(--safe-teal-dark);
    font-weight: 600;
    font-size: 14px;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: gap 0.2s;
}

.card-link:hover {
    gap: 8px;
}

/* ========== 功能深度展示 ========== */
.features-section {
    padding: 70px 0;
    background: var(--safe-mist);
}

.feature-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
    margin-bottom: 50px;
}

.feature-row:last-child {
    margin-bottom: 0;
}

.feature-row.reverse {
    direction: rtl;
}

.feature-row.reverse > * {
    direction: ltr;
}

.feature-badge {
    display: inline-block;
    background: rgba(0, 201, 167, 0.1);
    color: var(--safe-teal-dark);
    font-weight: 600;
    font-size: 13px;
    padding: 4px 14px;
    border-radius: 20px;
    margin-bottom: 10px;
}

.feature-text h3 {
    font-size: 26px;
    font-weight: 700;
    color: var(--safe-navy);
    margin-bottom: 10px;
    letter-spacing: -0.3px;
}

.feature-text p {
    color: var(--safe-slate);
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 16px;
}

.feature-text ul {
    list-style: none;
}

.feature-text ul li {
    padding-left: 28px;
    position: relative;
    margin-bottom: 8px;
    color: var(--safe-slate);
    font-size: 15px;
}

.feature-text ul li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--safe-teal);
    font-weight: 700;
    font-size: 18px;
}

.feature-media {
    background: #fff;
    border-radius: var(--safe-radius-lg);
    aspect-ratio: 16/10;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--safe-shadow-sm);
    border: 1px solid var(--safe-border);
}

.media-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    color: var(--safe-slate-light);
    font-size: 14px;
    text-align: center;
}

.media-icon {
    font-size: 48px;
    margin-bottom: 8px;
}

.media-dots {
    display: flex;
    gap: 6px;
    margin-top: 8px;
}

.media-dots span {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(0, 201, 167, 0.3);
}

.media-dots span:first-child {
    background: var(--safe-teal);
}

/* ========== 安全架构可视化 ========== */
.architecture-section {
    padding: 70px 0;
    background: #fff;
}

.arch-flow {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 20px;
    margin-top: 40px;
}

.arch-node {
    background: var(--safe-mist);
    border-radius: var(--safe-radius-lg);
    padding: 20px 24px;
    text-align: center;
    min-width: 160px;
    box-shadow: var(--safe-shadow-sm);
    border: 1px solid var(--safe-border);
    transition: transform 0.3s;
}

.arch-node:hover {
    transform: translateY(-4px);
}

.arch-node-icon {
    font-size: 32px;
    margin-bottom: 8px;
}

.arch-node-label {
    font-weight: 700;
    color: var(--safe-navy);
    font-size: 15px;
}

.arch-node-sub {
    display: block;
    font-size: 13px;
    color: var(--safe-slate-light);
}

.arch-arrow {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.arrow-line {
    width: 60px;
    height: 2px;
    background: rgba(0, 201, 167, 0.4);
    position: relative;
}

.arrow-line::after {
    content: '';
    position: absolute;
    right: -2px;
    top: -4px;
    width: 10px;
    height: 10px;
    border-top: 2px solid var(--safe-teal);
    border-right: 2px solid var(--safe-teal);
    transform: rotate(45deg);
}

.arrow-label {
    font-size: 12px;
    color: var(--safe-slate-light);
}

.arch-note {
    text-align: center;
    margin-top: 30px;
    font-size: 14px;
    color: var(--safe-slate);
    background: rgba(0, 201, 167, 0.08);
    padding: 12px 20px;
    border-radius: 30px;
    display: block;          /* 改为块级 */
    width: fit-content;      /* 宽度随内容收缩 */
    margin-left: auto;       /* 水平居中 */
    margin-right: auto;
}

/* ========== 数据统计 ========== */
.stats-section {
    padding: 50px 0;
    background: var(--safe-navy);
    color: #fff;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 20px;
    text-align: center;
}

.stat-item {
    padding: 10px;
}

.stat-item .number {
    font-size: 36px;
    font-weight: 800;
    color: var(--safe-teal);
    letter-spacing: -1px;
    line-height: 1.2;
}

.stat-item .label {
    font-size: 13px;
    opacity: 0.7;
    margin-top: 4px;
}

/* ========== 平台覆盖 ========== */
.platforms-preview {
    padding: 70px 0;
    background: #fff;
}

.platform-grid-mini {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
    margin-top: 40px;
}

.platform-mini-card {
    background: var(--safe-mist);
    border-radius: var(--safe-radius-md);
    padding: 20px 24px;
    text-align: center;
    min-width: 120px;
    transition: transform 0.25s, box-shadow 0.25s;
    border: 1px solid transparent;
}

.platform-mini-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--safe-shadow-md);
    border-color: rgba(0, 201, 167, 0.2);
    background: #fff;
}

.platform-mini-icon {
    font-size: 32px;
    display: block;
    margin-bottom: 6px;
}

.platform-mini-name {
    font-weight: 700;
    color: var(--safe-navy);
    font-size: 15px;
}

.platform-mini-ver {
    font-size: 12px;
    color: var(--safe-slate-light);
}

.platform-link-center {
    text-align: center;
    margin-top: 32px;
}

.btn-link {
    color: var(--safe-teal-dark);
    font-weight: 600;
    font-size: 15px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: gap 0.2s;
}

.btn-link:hover {
    gap: 10px;
}

/* ========== 应用场景 ========== */
.scenarios-preview {
    padding: 70px 0;
    background: var(--safe-mist);
}

.scenarios-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-top: 40px;
}

.scenario-card {
    background: #fff;
    border-radius: var(--safe-radius-lg);
    padding: 28px 24px;
    box-shadow: var(--safe-shadow-sm);
    border: 1px solid var(--safe-border);
    transition: transform 0.25s, box-shadow 0.25s;
    text-align: center;
}

.scenario-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--safe-shadow-md);
}

.scenario-icon {
    font-size: 36px;
    margin-bottom: 12px;
}

.scenario-card h4 {
    font-size: 18px;
    font-weight: 700;
    color: var(--safe-navy);
    margin-bottom: 8px;
}

.scenario-card p {
    color: var(--safe-slate);
    font-size: 14px;
    line-height: 1.6;
}

.scenarios-more {
    text-align: center;
    margin-top: 36px;
}

/* ========== 用户声音 ========== */
.testimonial-section {
    padding: 70px 0;
    background: #fff;
}

.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.testimonial-card {
    background: var(--safe-mist);
    border-radius: var(--safe-radius-lg);
    padding: 28px 24px;
    box-shadow: var(--safe-shadow-sm);
    border: 1px solid var(--safe-border);
    transition: transform 0.25s;
}

.testimonial-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--safe-shadow-md);
}

.testimonial-stars {
    color: #ffb400;
    font-size: 18px;
    letter-spacing: 2px;
    margin-bottom: 12px;
}

.testimonial-text {
    color: var(--safe-slate);
    font-size: 15px;
    line-height: 1.7;
    margin-bottom: 18px;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 12px;
}

.author-avatar {
    width: 40px;
    height: 40px;
    background: var(--safe-teal-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
}

.testimonial-author strong {
    display: block;
    font-size: 14px;
    color: var(--safe-navy);
}

.testimonial-author span {
    font-size: 12px;
    color: var(--safe-slate-light);
}

/* ========== 更新与洞察 ========== */
.updates-insights {
    padding: 70px 0;
    background: var(--safe-mist);
}

.updates-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}

.updates-panel,
.insights-panel {
    background: #fff;
    border-radius: var(--safe-radius-lg);
    padding: 28px;
    box-shadow: var(--safe-shadow-sm);
    border: 1px solid var(--safe-border);
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.panel-link {
    font-size: 14px;
    color: var(--safe-teal-dark);
    font-weight: 500;
    transition: color 0.2s;
}

.panel-link:hover {
    color: var(--safe-navy);
}

.update-item {
    padding: 14px 0;
    border-bottom: 1px solid var(--safe-border);
}

.update-item:last-child {
    border-bottom: none;
}

.update-version {
    font-weight: 700;
    color: var(--safe-navy);
    font-size: 16px;
}

.update-date {
    font-size: 12px;
    color: var(--safe-slate-light);
    margin-bottom: 4px;
}

.update-item p {
    font-size: 14px;
    color: var(--safe-slate);
    line-height: 1.6;
}

.insight-item {
    padding: 14px 0;
    border-bottom: 1px solid var(--safe-border);
}

.insight-item:last-child {
    border-bottom: none;
}

.insight-item h4 {
    font-size: 15px;
    font-weight: 600;
    color: var(--safe-navy);
    margin-bottom: 4px;
    transition: color 0.2s;
}

.insight-item h4:hover {
    color: var(--safe-teal);
}

.insight-date {
    font-size: 12px;
    color: var(--safe-slate-light);
}

/* ========== 企业方案预告 ========== */
.enterprise-preview {
    padding: 70px 0;
    background: #fff;
}

.enterprise-banner {
    background: linear-gradient(135deg, var(--safe-navy), var(--safe-navy-light));
    border-radius: var(--safe-radius-xl);
    padding: 50px 50px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
    box-shadow: var(--safe-shadow-lg);
    position: relative;
    overflow: hidden;
}

.enterprise-banner::before {
    content: '';
    position: absolute;
    top: -60px;
    right: -60px;
    width: 250px;
    height: 250px;
    background: rgba(0, 201, 167, 0.15);
    border-radius: 50%;
    pointer-events: none;
}

.enterprise-text {
    flex: 1;
    z-index: 1;
}

.enterprise-text h2 {
    font-size: 28px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 12px;
}

.enterprise-text p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 16px;
    line-height: 1.7;
    margin-bottom: 24px;
    max-width: 500px;
}

.enterprise-visual {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    z-index: 1;
}

.enterprise-icon {
    font-size: 60px;
}

.enterprise-stats span {
    display: block;
    font-size: 32px;
    font-weight: 800;
    color: var(--safe-teal);
    text-align: center;
}

.enterprise-stats label {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
}

/* ========== FAQ 预览 ========== */
.faq-preview-section {
    padding: 70px 0;
    background: var(--safe-mist);
}

.faq-preview-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 40px;
    align-items: start;
}

.faq-preview-text h2 {
    font-size: 30px;
    font-weight: 700;
    color: var(--safe-navy);
    margin-bottom: 12px;
}

.faq-preview-text p {
    color: var(--safe-slate);
    font-size: 16px;
    margin-bottom: 24px;
}

.faq-preview-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.faq-item {
    background: #fff;
    border-radius: var(--safe-radius-md);
    overflow: hidden;
    box-shadow: var(--safe-shadow-sm);
    border: 1px solid var(--safe-border);
}

.faq-question {
    width: 100%;
    background: none;
    border: none;
    padding: 18px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-size: 15px;
    font-weight: 600;
    color: var(--safe-navy);
    text-align: left;
    transition: background 0.2s;
    font-family: var(--safe-font);
}

.faq-question:hover {
    background: rgba(0, 201, 167, 0.05);
}

.faq-toggle {
    font-size: 20px;
    color: var(--safe-teal);
    transition: transform 0.2s;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, opacity 0.3s ease, padding 0.3s ease;
    opacity: 0;
    color: var(--safe-slate);
    font-size: 14px;
    line-height: 1.7;
    padding: 0 20px;
}

.faq-answer p {
    margin-bottom: 12px;
}

.faq-item.active .faq-answer {
    padding: 0 20px 18px;
    opacity: 1;
}

/* ========== 行动号召 ========== */
.cta-section {
    padding: 70px 0;
    background: #fff;
}

.cta-box {
    background: linear-gradient(135deg, #f0f7fa, #e6f0f5);
    border-radius: var(--safe-radius-xl);
    padding: 60px 40px;
    text-align: center;
    box-shadow: var(--safe-shadow-sm);
    border: 1px solid var(--safe-border);
}

.cta-box h2 {
    font-size: 32px;
    font-weight: 700;
    color: var(--safe-navy);
    margin-bottom: 12px;
}

.cta-box p {
    font-size: 18px;
    color: var(--safe-slate);
    margin-bottom: 30px;
    max-width: 550px;
    margin-left: auto;
    margin-right: auto;
}

.cta-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    justify-content: center;
}

/* ========== 页脚 ========== */
.footer {
    background: var(--safe-mist-dark);
    padding: 48px 0 32px;
    border-top: 1px solid var(--safe-border);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 32px;
}

.footer-brand h3 {
    font-size: 22px;
    color: var(--safe-navy);
    margin-bottom: 8px;
}

.footer-brand p {
    color: var(--safe-slate-light);
    font-size: 14px;
    max-width: 300px;
    line-height: 1.7;
}

.footer-meta {
    margin-top: 8px;
    font-size: 13px;
    color: var(--safe-slate-light);
}

.footer-col h4 {
    font-size: 15px;
    font-weight: 600;
    color: var(--safe-navy);
    margin-bottom: 14px;
}

.footer-col ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.footer-col ul a {
    font-size: 14px;
    color: var(--safe-slate-light);
    transition: color 0.2s;
}

.footer-col ul a:hover {
    color: var(--safe-teal);
}

.footer-bottom {
    border-top: 1px solid var(--safe-border-strong);
    padding-top: 24px;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 13px;
    color: var(--safe-slate-light);
}

.footer-bottom .info-group {
    display: flex;
    flex-wrap: wrap;
    gap: 16px 28px;
}

.footer-bottom .badge {
    background: var(--safe-teal);
    color: #fff;
    padding: 1px 12px;
    border-radius: 20px;
    font-size: 11px;
}

/* ========== 响应式设计 ========== */
@media (max-width: 1024px) {
    .hero-grid {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }
    .hero-lead {
        margin-left: auto;
        margin-right: auto;
    }
    .hero-buttons {
        justify-content: center;
    }
    .hero-trust {
        justify-content: center;
    }
    .hero-visual {
        min-height: 350px;
    }
    .value-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .feature-row {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    .feature-row.reverse {
        direction: ltr;
    }
    .arch-flow {
        flex-direction: column;
        align-items: center;
    }
    .arch-arrow {
        transform: rotate(90deg);
    }
    .stats-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .scenarios-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .testimonial-grid {
        grid-template-columns: 1fr;
    }
    .updates-grid {
        grid-template-columns: 1fr;
    }
    .enterprise-banner {
        flex-direction: column;
        text-align: center;
        padding: 40px 30px;
    }
    .enterprise-text p {
        margin-left: auto;
        margin-right: auto;
    }
    .faq-preview-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(16px);
        padding: 20px 30px;
        border-bottom: 1px solid var(--safe-border);
        gap: 12px;
        align-items: flex-start;
        box-shadow: var(--safe-shadow-md);
    }
    .nav-links.open {
        display: flex;
    }
    .nav-toggle {
        display: flex;
    }
    .nav-more {
        display: block;
        width: 100%;
    }
    .nav-dropdown {
        position: static;
        display: none;
        box-shadow: none;
        border: none;
        padding: 8px 0 0 16px;
        background: transparent;
        min-width: auto;
    }
    .nav-dropdown.open {
        display: block;
    }
    .nav-more-btn {
        width: 100%;
        justify-content: space-between;
    }
    .nav-cta {
        margin-top: 8px;
    }
    .hero-content h1 {
        font-size: 36px;
    }
    .hero-lead {
        font-size: 16px;
    }
    .value-grid {
        grid-template-columns: 1fr;
    }
    .platform-grid-mini {
        gap: 12px;
    }
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .scenarios-grid {
        grid-template-columns: 1fr;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
    }
    .trust-bar-inner {
        gap: 10px;
    }
    .trust-divider {
        display: none;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }
    .btn-primary,
    .btn-secondary {
        width: 100%;
        justify-content: center;
    }
    .hero {
        padding: 40px 0;
    }
    .hero-content h1 {
        font-size: 30px;
    }
    .hero-visual {
        min-height: 280px;
    }
    .hero-orb {
        width: 220px;
        height: 220px;
    }
    .ring-1 { width: 220px; height: 220px; }
    .ring-2 { width: 170px; height: 170px; }
    .ring-3 { width: 120px; height: 120px; }
    .orb-core {
        width: 80px;
        height: 80px;
    }
    .stats-grid {
        grid-template-columns: 1fr 1fr;
        gap: 16px;
    }
    .stat-item .number {
        font-size: 28px;
    }
    .platform-mini-card {
        min-width: 90px;
        padding: 14px 12px;
    }
    .section-title h2 {
        font-size: 26px;
    }
    .enterprise-banner {
        padding: 30px 20px;
    }
    .cta-box {
        padding: 40px 20px;
    }
    .cta-box h2 {
        font-size: 26px;
    }
}