/* ============================================
   OpenRay Security — 全局设计系统
   规范：frontend-design-pro + design-taste-frontend
   ============================================ */

/* ---- 字体引入 ---- */
@font-face {
    font-family: 'Geist';
    src: url('https://cdn.jsdelivr.net/npm/geist@1.2.2/dist/fonts/geist-sans/Geist-Variable.woff2') format('woff2');
    font-weight: 100 900;
    font-display: swap;
}

@font-face {
    font-family: 'Geist Mono';
    src: url('https://cdn.jsdelivr.net/npm/geist@1.2.2/dist/fonts/geist-mono/GeistMono-Variable.woff2') format('woff2');
    font-weight: 100 900;
    font-display: swap;
}

/* ---- CSS 变量（OKLCH 感知均匀色彩空间） ---- */
:root {
    /* 背景层 */
    --bg-base: #08080c;
    --bg-elevated: #0c0c12;
    --bg-surface: #101018;
    --bg-surface-hover: #151520;

    /* 强调色 — 单一主色，饱和<80%，teal 沉稳 */
    --accent: #2dd4bf;
    --accent-dim: rgba(45, 212, 191, 0.12);
    --accent-glow: rgba(45, 212, 191, 0.25);

    /* 功能色 */
    --danger: #f43f5e;
    --danger-dim: rgba(244, 63, 94, 0.12);
    --warning: #f59e0b;
    --warning-dim: rgba(245, 158, 11, 0.12);
    --success: #10b981;
    --success-dim: rgba(16, 185, 129, 0.12);

    /* 文字 */
    --text-primary: #f4f4f5;
    --text-secondary: #a1a1aa;
    --text-tertiary: #71717a;
    --text-muted: #52525b;

    /* 边框 — 始终带微妙色调 */
    --border: rgba(255, 255, 255, 0.06);
    --border-hover: rgba(255, 255, 255, 0.1);
    --border-accent: rgba(45, 212, 191, 0.2);

    /* 阴影 — 内折射边缘模拟 Liquid Glass */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.5);
    --shadow-inset: inset 0 1px 0 rgba(255, 255, 255, 0.04);

    /* 动效 */
    --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
    --duration-fast: 150ms;
    --duration-base: 300ms;
    --duration-slow: 500ms;

    /* 间距 — 8px 基础 */
    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 20px;
    --space-6: 24px;
    --space-8: 32px;
    --space-10: 40px;
    --space-12: 48px;
    --space-16: 64px;
    --space-20: 80px;
    --space-24: 96px;

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

    /* 尺寸 */
    --radius-sm: 6px;
    --radius-base: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --max-content: 1200px;
}

/* ---- 重置 ---- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-base);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100dvh;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--duration-fast) var(--ease-out-expo);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

/* ---- 背景效果 ---- */
.grid-bg {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    opacity: 0.025;
    background-image:
        linear-gradient(rgba(45, 212, 191, 0.4) 1px, transparent 1px),
        linear-gradient(90deg, rgba(45, 212, 191, 0.4) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at 50% 0%, black 0%, transparent 70%);
}

.particles {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 1;
    overflow: hidden;
}

.particle {
    position: absolute;
    width: 2px;
    height: 2px;
    background: var(--accent);
    border-radius: 50%;
    opacity: 0;
    animation: float-up 10s infinite linear;
}

@keyframes float-up {
    0% { transform: translateY(100vh) scale(0); opacity: 0; }
    8% { opacity: 0.4; }
    92% { opacity: 0.4; }
    100% { transform: translateY(-10vh) scale(1); opacity: 0; }
}

/* ---- 导航栏 ---- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    padding: var(--space-4) 0;
    transition: background var(--duration-base) var(--ease-out-expo),
                border-color var(--duration-base) var(--ease-out-expo),
                backdrop-filter var(--duration-base) var(--ease-out-expo);
    background: transparent;
    border-bottom: 1px solid transparent;
}

.navbar.scrolled {
    background: rgba(8, 8, 12, 0.85);
    backdrop-filter: blur(20px) saturate(1.2);
    border-bottom-color: var(--border);
}

.nav-container {
    max-width: var(--max-content);
    margin: 0 auto;
    padding: 0 var(--space-6);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-weight: 700;
    font-size: 1.15rem;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.logo-icon {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--accent) 0%, #0d9488 100%);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bg-base);
    font-size: 0.9rem;
}

.nav-links {
    display: flex;
    gap: var(--space-8);
    list-style: none;
    align-items: center;
}

.nav-links a {
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    position: relative;
    padding: var(--space-2) 0;
    letter-spacing: -0.01em;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1.5px;
    background: var(--accent);
    transition: width var(--duration-base) var(--ease-out-expo);
}

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

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

.nav-cta {
    background: var(--accent);
    color: var(--bg-base) !important;
    padding: var(--space-2) var(--space-5) !important;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.8rem !important;
    transition: all var(--duration-fast) var(--ease-out-expo);
}

.nav-cta::after { display: none !important; }

.nav-cta:hover {
    background: #5eead4;
    transform: translateY(-1px);
    box-shadow: 0 4px 20px var(--accent-glow);
}

/* ---- 移动端菜单 ---- */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: var(--space-2);
}

.mobile-menu-btn span {
    display: block;
    width: 22px;
    height: 1.5px;
    background: var(--text-primary);
    transition: all var(--duration-base) var(--ease-out-expo);
}

/* ---- 容器 ---- */
.container {
    max-width: var(--max-content);
    margin: 0 auto;
    padding: 0 var(--space-6);
    position: relative;
    z-index: 2;
}

.section {
    padding: var(--space-24) 0;
    position: relative;
}

.section-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    margin-bottom: var(--space-4);
    letter-spacing: -0.03em;
    line-height: 1.15;
    color: var(--text-primary);
}

.section-subtitle {
    color: var(--text-secondary);
    font-size: 1.05rem;
    max-width: 560px;
    line-height: 1.6;
}

/* ---- 按钮 ---- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    border: none;
    transition: all var(--duration-fast) var(--ease-out-expo);
    font-family: inherit;
    letter-spacing: -0.01em;
    white-space: nowrap;
}

.btn:active {
    transform: scale(0.98) translateY(0);
}

.btn-primary {
    background: var(--accent);
    color: var(--bg-base);
    box-shadow: var(--shadow-inset), 0 1px 2px rgba(0,0,0,0.2);
}

.btn-primary:hover {
    background: #5eead4;
    transform: translateY(-1px);
    box-shadow: var(--shadow-inset), 0 4px 20px var(--accent-glow);
}

.btn-secondary {
    background: transparent;
    color: var(--accent);
    border: 1px solid var(--border-accent);
    box-shadow: var(--shadow-inset);
}

.btn-secondary:hover {
    background: var(--accent-dim);
    border-color: var(--accent);
    transform: translateY(-1px);
}

.btn-danger {
    background: var(--danger);
    color: #fff;
}

.btn-danger:hover {
    background: #fb7185;
    transform: translateY(-1px);
    box-shadow: 0 4px 20px rgba(244, 63, 94, 0.25);
}

/* ---- 卡片（Liquid Glass） ---- */
.card {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--space-8);
    transition: all var(--duration-base) var(--ease-out-expo);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-inset);
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.08), transparent);
}

.card::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    padding: 1px;
    background: linear-gradient(180deg, rgba(255,255,255,0.06) 0%, transparent 40%);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    pointer-events: none;
}

.card:hover {
    background: var(--bg-surface-hover);
    border-color: var(--border-hover);
    transform: translateY(-3px);
    box-shadow: var(--shadow-inset), var(--shadow-lg);
}

.card-icon {
    width: 44px;
    height: 44px;
    background: var(--accent-dim);
    border-radius: var(--radius-base);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-5);
    color: var(--accent);
}

.card-icon svg {
    width: 22px;
    height: 22px;
}

.card-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: var(--space-2);
    letter-spacing: -0.02em;
}

.card-desc {
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.7;
}

/* ---- 标签 ---- */
.tag {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.02em;
}

.tag-danger {
    background: var(--danger-dim);
    color: var(--danger);
}

.tag-warning {
    background: var(--warning-dim);
    color: var(--warning);
}

.tag-success {
    background: var(--success-dim);
    color: var(--success);
}

.tag-info {
    background: var(--accent-dim);
    color: var(--accent);
}

/* ---- 评分环 ---- */
.score-ring {
    position: relative;
    width: 120px;
    height: 120px;
}

.score-ring svg {
    transform: rotate(-90deg);
}

.score-ring-bg {
    fill: none;
    stroke: var(--border);
    stroke-width: 6;
}

.score-ring-fill {
    fill: none;
    stroke: var(--accent);
    stroke-width: 6;
    stroke-linecap: round;
    stroke-dasharray: 339.292;
    stroke-dashoffset: 339.292;
    transition: stroke-dashoffset 2s var(--ease-out-expo);
}

.score-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 1.75rem;
    font-weight: 700;
    font-family: var(--font-mono);
    color: var(--accent);
    letter-spacing: -0.04em;
}

/* ---- 页脚 ---- */
.footer {
    background: var(--bg-elevated);
    border-top: 1px solid var(--border);
    padding: var(--space-16) 0 var(--space-8);
    position: relative;
    z-index: 2;
}

.footer-content {
    max-width: var(--max-content);
    margin: 0 auto;
    padding: 0 var(--space-6);
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-12);
}

.footer-brand {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: var(--space-4);
    display: flex;
    align-items: center;
    gap: var(--space-2);
    letter-spacing: -0.02em;
}

.footer-desc {
    color: var(--text-tertiary);
    font-size: 0.85rem;
    line-height: 1.8;
    max-width: 280px;
}

.footer-title {
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: var(--space-4);
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--space-3);
}

.footer-links a {
    color: var(--text-tertiary);
    font-size: 0.85rem;
    transition: color var(--duration-fast) var(--ease-out-expo);
}

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

.footer-bottom {
    max-width: var(--max-content);
    margin: var(--space-10) auto 0;
    padding: var(--space-6) var(--space-6) 0;
    border-top: 1px solid var(--border);
    text-align: center;
    color: var(--text-muted);
    font-size: 0.75rem;
    line-height: 1.6;
}

/* ---- 动画类 ---- */
.fade-in {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s var(--ease-out-expo), transform 0.7s var(--ease-out-expo);
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.delay-1 { transition-delay: 0.08s; }
.delay-2 { transition-delay: 0.16s; }
.delay-3 { transition-delay: 0.24s; }
.delay-4 { transition-delay: 0.32s; }

/* ---- 页面头部 ---- */
.page-header {
    min-height: 40vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 80px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: -50%;
    left: 50%;
    transform: translateX(-50%);
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(45, 212, 191, 0.06) 0%, transparent 60%);
    pointer-events: none;
    z-index: 0;
}

.page-header h1 {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    letter-spacing: -0.04em;
    margin-bottom: var(--space-4);
}

.page-header p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    max-width: 480px;
    margin: 0 auto;
}

/* ---- CTA 卡片 ---- */
.cta-card {
    background: linear-gradient(135deg, rgba(45, 212, 191, 0.08) 0%, rgba(13, 148, 136, 0.04) 100%);
    border: 1px solid var(--border-accent);
    border-radius: var(--radius-xl);
    padding: var(--space-12);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-10);
    position: relative;
    overflow: hidden;
}

.cta-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(45, 212, 191, 0.3), transparent);
}

.cta-content h2 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: var(--space-2);
    letter-spacing: -0.03em;
}

.cta-content p {
    color: var(--text-secondary);
    margin-bottom: var(--space-6);
}

.cta-buttons {
    display: flex;
    gap: var(--space-4);
    flex-wrap: wrap;
}

/* ---- 响应式 ---- */
@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: rgba(8, 8, 12, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: var(--space-6);
        gap: var(--space-2);
        border-bottom: 1px solid var(--border);
    }

    .nav-links.active {
        display: flex;
    }

    .nav-links a {
        padding: var(--space-3) 0;
        font-size: 1rem;
    }

    .nav-cta {
        margin-top: var(--space-2);
        text-align: center;
        justify-content: center;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .section {
        padding: var(--space-16) 0;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--space-8);
    }

    .cta-card {
        flex-direction: column;
        text-align: center;
        padding: var(--space-8);
    }

    .cta-buttons {
        justify-content: center;
    }
}

/* ---- 滚动条 ---- */
::-webkit-scrollbar {
    width: 5px;
}

::-webkit-scrollbar-track {
    background: var(--bg-base);
}

::-webkit-scrollbar-thumb {
    background: var(--border-hover);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}