:root {
    --primary: #0057d9;
    --primary-light: #2d8cff;
    --primary-dark: #063b8f;
    --secondary: #6c757d;
    --accent: #ff7a1a;
    --bg-main: #f4f7fb;
    --bg-card: #ffffff;
    --bg-dark: #1a1a2e;
    --border-color: #e1e5eb;
    --text-main: #1a1a2e;
    --text-secondary: #5a6270;
    --text-muted: #9ca3af;
    --shadow: 0 2px 12px rgba(6,42,88,0.06);
    --shadow-hover: 0 12px 32px rgba(6,42,88,0.12);
    --radius: 12px;

    --glass-bg: rgba(255, 255, 255, 0.55);
    --glass-bg-hover: rgba(255, 255, 255, 0.78);
    --glass-bg-strong: rgba(255, 255, 255, 0.72);
    --glass-border: rgba(255, 255, 255, 0.55);
    --glass-border-hover: rgba(0, 87, 217, 0.3);
    --glass-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
    --glass-shadow-hover: 0 12px 40px rgba(0, 87, 217, 0.12);
    --glass-blur: blur(16px);
    --glass-blur-light: blur(10px);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', 'Segoe UI', -apple-system, sans-serif;
    background: var(--bg-main);
    color: var(--text-main);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    flex: 1;
}

/* 动态背景 */
.bg-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
}

.bg-gradient {
    position: absolute;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0,102,204,0.06) 0%, rgba(245,247,250,1) 50%, rgba(255,107,53,0.04) 100%);
}

.bg-mesh {
    position: absolute;
    width: 100%;
    height: 100%;
    background-image:
        linear-gradient(rgba(0,102,204,0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0,102,204,0.05) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: mesh-move 20s linear infinite;
}

@keyframes mesh-move {
    0% { transform: translate(0, 0); }
    100% { transform: translate(50px, 50px); }
}

/* 新增: 科技网格叠加 */
.cyber-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(0, 180, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 180, 255, 0.03) 1px, transparent 1px);
    background-size: 80px 80px;
    animation: cyber-grid-move 15s linear infinite;
}

@keyframes cyber-grid-move {
    0% { transform: translate(0, 0); }
    100% { transform: translate(80px, 80px); }
}

.bg-float {
    position: absolute;
    border-radius: 50%;
    opacity: 0.8;
    animation: float 20s ease-in-out infinite;
    filter: blur(60px);
}

.bg-float-1 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(0,102,204,0.28), transparent 70%);
    top: -15%;
    left: -10%;
    animation-delay: 0s;
}

.bg-float-2 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(255,107,53,0.22), transparent 70%);
    top: 25%;
    right: -8%;
    animation-delay: -8s;
}

.bg-float-3 {
    width: 450px;
    height: 450px;
    background: radial-gradient(circle, rgba(0,102,204,0.2), transparent 70%);
    bottom: 5%;
    left: 10%;
    animation-delay: -15s;
}

.bg-float-4 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(100,180,255,0.18), transparent 70%);
    top: 50%;
    left: 40%;
    animation-delay: -12s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    25% { transform: translate(60px, -60px) scale(1.12); }
    50% { transform: translate(-50px, 50px) scale(0.92); }
    75% { transform: translate(50px, 40px) scale(1.1); }
}

/* 流动线条 */
.bg-lines {
    position: absolute;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.bg-line {
    position: absolute;
    width: 2px;
    height: 100px;
    background: linear-gradient(to bottom, transparent, rgba(0,130,230,0.3), transparent);
    box-shadow: 0 0 8px rgba(0, 150, 255, 0.2);
    animation: line-flow 8s linear infinite;
}

.bg-line:nth-child(1) { left: 5%; top: -120px; animation-delay: 0s; }
.bg-line:nth-child(2) { left: 12%; top: -120px; animation-delay: 1.5s; }
.bg-line:nth-child(3) { left: 20%; top: -120px; animation-delay: 3s; }
.bg-line:nth-child(4) { left: 28%; top: -120px; animation-delay: 0.8s; }
.bg-line:nth-child(5) { left: 36%; top: -120px; animation-delay: 2.2s; }
.bg-line:nth-child(6) { left: 44%; top: -120px; animation-delay: 4s; }
.bg-line:nth-child(7) { left: 52%; top: -120px; animation-delay: 1.2s; }
.bg-line:nth-child(8) { left: 60%; top: -120px; animation-delay: 3.5s; }
.bg-line:nth-child(9) { left: 68%; top: -120px; animation-delay: 0.5s; }
.bg-line:nth-child(10) { left: 76%; top: -120px; animation-delay: 2.8s; }
.bg-line:nth-child(11) { left: 84%; top: -120px; animation-delay: 4.5s; }
.bg-line:nth-child(12) { left: 92%; top: -120px; animation-delay: 1.8s; }

@keyframes line-flow {
    0% { transform: translateY(0); opacity: 0; }
    10% { opacity: 1; }
    90% { opacity: 0.5; }
    100% { transform: translateY(120vh); opacity: 0; }
}

/* 浮动气泡 */
.bg-bubbles {
    position: absolute;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.bg-bubble {
    position: absolute;
    border-radius: 50%;
    background: rgba(0,102,204,0.14);
    border: 1px solid rgba(0,102,204,0.18);
    box-shadow: 0 0 10px rgba(0, 120, 255, 0.1);
    animation: bubble-rise 12s ease-in-out infinite;
}

.bg-bubble:nth-child(1) { width: 80px; height: 80px; left: 3%; bottom: -80px; animation-delay: 0s; }
.bg-bubble:nth-child(2) { width: 50px; height: 50px; left: 10%; bottom: -50px; animation-delay: 2.5s; }
.bg-bubble:nth-child(3) { width: 100px; height: 100px; left: 18%; bottom: -100px; animation-delay: 5s; }
.bg-bubble:nth-child(4) { width: 40px; height: 40px; left: 28%; bottom: -40px; animation-delay: 1.2s; }
.bg-bubble:nth-child(5) { width: 70px; height: 70px; left: 35%; bottom: -70px; animation-delay: 6.5s; }
.bg-bubble:nth-child(6) { width: 90px; height: 90px; left: 45%; bottom: -90px; animation-delay: 3.8s; }
.bg-bubble:nth-child(7) { width: 55px; height: 55px; left: 55%; bottom: -55px; animation-delay: 8s; }
.bg-bubble:nth-child(8) { width: 75px; height: 75px; left: 65%; bottom: -75px; animation-delay: 4.2s; }
.bg-bubble:nth-child(9) { width: 45px; height: 45px; left: 75%; bottom: -45px; animation-delay: 9.5s; }
.bg-bubble:nth-child(10) { width: 85px; height: 85px; left: 85%; bottom: -85px; animation-delay: 6s; }

@keyframes bubble-rise {
    0% { transform: translateY(0) scale(0.7); opacity: 0; }
    10% { opacity: 0.8; }
    90% { opacity: 0.5; }
    100% { transform: translateY(-120vh) scale(1.3); opacity: 0; }
}

/* 光点闪烁 */
.bg-dots {
    position: absolute;
    width: 100%;
    height: 100%;
}

.bg-dot {
    position: absolute;
    width: 6px;
    height: 6px;
    background: rgba(0, 130, 230, 0.7);
    border-radius: 50%;
    animation: dot-twinkle 2.5s ease-in-out infinite;
}

.bg-dot:nth-child(1) { left: 8%; top: 15%; animation-delay: 0s; }
.bg-dot:nth-child(2) { left: 18%; top: 35%; animation-delay: 0.4s; }
.bg-dot:nth-child(3) { left: 32%; top: 12%; animation-delay: 0.8s; }
.bg-dot:nth-child(4) { left: 48%; top: 45%; animation-delay: 1.2s; }
.bg-dot:nth-child(5) { left: 62%; top: 22%; animation-delay: 1.6s; }
.bg-dot:nth-child(6) { left: 75%; top: 55%; animation-delay: 2s; }
.bg-dot:nth-child(7) { left: 88%; top: 38%; animation-delay: 0.3s; }
.bg-dot:nth-child(8) { left: 15%; top: 68%; animation-delay: 0.7s; }
.bg-dot:nth-child(9) { left: 35%; top: 78%; animation-delay: 1.1s; }
.bg-dot:nth-child(10) { left: 55%; top: 72%; animation-delay: 1.5s; }
.bg-dot:nth-child(11) { left: 72%; top: 82%; animation-delay: 1.9s; }
.bg-dot:nth-child(12) { left: 92%; top: 65%; animation-delay: 2.3s; }

@keyframes dot-twinkle {
    0%, 100% { opacity: 0.3; transform: scale(1); box-shadow: 0 0 6px rgba(0, 130, 230, 0.4); }
    50% { opacity: 1; transform: scale(2.2); box-shadow: 0 0 22px rgba(0, 150, 255, 0.9); }
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: all 0.2s;
}

a:hover {
    color: var(--primary-dark);
}

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

/* Header */
header {
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow);
}

.header-main {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 60px;
    width: 100%;
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}

.logo-area a {
    display: flex;
    align-items: center;
}

.logo-area img {
    height: 36px;
    width: auto;
}

.logo-sub {
    font-size: 0.65rem;
    color: var(--primary);
    font-weight: 600;
    letter-spacing: 1px;
}

nav {
    display: flex;
    gap: 4px;
    justify-content: center;
    flex: 1;
}

nav a {
    padding: 8px 16px;
    color: var(--text-secondary);
    font-size: 0.9rem;
    border-radius: 8px;
    transition: all 0.2s;
}

nav a:hover, nav a.active {
    color: var(--primary);
    background: rgba(0, 102, 204, 0.08);
}

.visit-counter {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: var(--bg-main);
    border-radius: 20px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    flex-shrink: 0;
}

.visit-counter {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: var(--bg-main);
    border-radius: 20px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Hero */
.hero {
    background: linear-gradient(135deg, #0052a3 0%, #0066cc 50%, #3399ff 100%);
    color: #fff;
    padding: 60px 0 80px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 20% 30%, rgba(255,255,255,0.12) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(255,107,53,0.18) 0%, transparent 40%);
}

.hero::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent 40%, rgba(255,255,255,0.04) 50%, transparent 60%);
    animation: shine 6s linear infinite;
}

@keyframes shine {
    0% { transform: translateX(-100%) rotate(45deg); }
    100% { transform: translateX(100%) rotate(45deg); }
}

.hero-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.hero-particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: rgba(180, 220, 255, 0.8);
    border-radius: 50%;
    box-shadow: 0 0 6px rgba(100, 200, 255, 0.6), 0 0 12px rgba(0, 150, 255, 0.3);
    animation: particle-rise 10s linear infinite;
}

.hero-particle:nth-child(1) { left: 5%; animation-delay: 0s; width: 3px; height: 3px; }
.hero-particle:nth-child(2) { left: 10%; animation-delay: 1.2s; width: 5px; height: 5px; }
.hero-particle:nth-child(3) { left: 15%; animation-delay: 2.5s; width: 2px; height: 2px; }
.hero-particle:nth-child(4) { left: 20%; animation-delay: 3.8s; width: 4px; height: 4px; }
.hero-particle:nth-child(5) { left: 25%; animation-delay: 0.8s; width: 6px; height: 6px; }
.hero-particle:nth-child(6) { left: 30%; animation-delay: 5.2s; width: 3px; height: 3px; }
.hero-particle:nth-child(7) { left: 35%; animation-delay: 2.0s; width: 4px; height: 4px; }
.hero-particle:nth-child(8) { left: 40%; animation-delay: 6.5s; width: 2px; height: 2px; }
.hero-particle:nth-child(9) { left: 45%; animation-delay: 4.0s; width: 5px; height: 5px; }
.hero-particle:nth-child(10) { left: 50%; animation-delay: 1.5s; width: 3px; height: 3px; }
.hero-particle:nth-child(11) { left: 55%; animation-delay: 7.0s; width: 4px; height: 4px; }
.hero-particle:nth-child(12) { left: 60%; animation-delay: 3.2s; width: 6px; height: 6px; }
.hero-particle:nth-child(13) { left: 65%; animation-delay: 9.0s; width: 2px; height: 2px; }
.hero-particle:nth-child(14) { left: 70%; animation-delay: 2.8s; width: 5px; height: 5px; }
.hero-particle:nth-child(15) { left: 75%; animation-delay: 4.5s; width: 3px; height: 3px; }
.hero-particle:nth-child(16) { left: 80%; animation-delay: 6.0s; width: 4px; height: 4px; }
.hero-particle:nth-child(17) { left: 85%; animation-delay: 1.0s; width: 5px; height: 5px; }
.hero-particle:nth-child(18) { left: 90%; animation-delay: 8.0s; width: 3px; height: 3px; }

@keyframes particle-rise {
    0% { transform: translateY(100vh) scale(0); opacity: 0; }
    15% { opacity: 1; }
    70% { opacity: 0.7; }
    100% { transform: translateY(-120vh) scale(1.2); opacity: 0; }
}

/* 数据流竖线 */
.hero-data-streams {
    position: absolute;
    inset: 0;
    overflow: hidden;
    pointer-events: none;
}

.hero-data-line {
    position: absolute;
    top: -60px;
    width: 1.5px;
    height: 50px;
    background: linear-gradient(to bottom, transparent, rgba(0, 180, 255, 0.6), transparent);
    animation: data-stream-fall 4s linear infinite;
}

.hero-data-line:nth-child(1) { left: 8%; animation-delay: 0s; height: 40px; }
.hero-data-line:nth-child(2) { left: 18%; animation-delay: 1.2s; height: 55px; }
.hero-data-line:nth-child(3) { left: 28%; animation-delay: 2.5s; height: 35px; }
.hero-data-line:nth-child(4) { left: 38%; animation-delay: 0.6s; height: 60px; }
.hero-data-line:nth-child(5) { left: 48%; animation-delay: 3.0s; height: 45px; }
.hero-data-line:nth-child(6) { left: 58%; animation-delay: 1.8s; height: 50px; }
.hero-data-line:nth-child(7) { left: 68%; animation-delay: 2.0s; height: 38px; }
.hero-data-line:nth-child(8) { left: 78%; animation-delay: 3.5s; height: 55px; }

@keyframes data-stream-fall {
    0% { transform: translateY(-60px); opacity: 0; }
    10% { opacity: 0.8; }
    90% { opacity: 0.3; }
    100% { transform: translateY(100vh); opacity: 0; }
}

/* 中央光晕 */
.hero-glow {
    position: absolute;
    bottom: 10%;
    left: 50%;
    transform: translateX(-50%);
    width: 500px;
    height: 120px;
    background: radial-gradient(ellipse, rgba(0, 140, 255, 0.15) 0%, transparent 70%);
    animation: hero-glow-pulse 3s ease-in-out infinite;
    pointer-events: none;
}

@keyframes hero-glow-pulse {
    0%, 100% { opacity: 0.4; transform: translateX(-50%) scale(1); }
    50% { opacity: 0.9; transform: translateX(-50%) scale(1.15); }
}

/* 光环增强 */
.hero-ring {
    position: absolute;
    border: 2px solid rgba(255,255,255,0.1);
    border-radius: 50%;
    animation: ring-pulse 6s ease-out infinite;
}

.hero-ring-1 { animation-duration: 6s; }
.hero-ring-2 { animation-duration: 6s; animation-delay: -2s; }
.hero-ring-3 { animation-duration: 6s; animation-delay: -4s; }

@keyframes ring-pulse {
    0% { width: 80px; height: 80px; opacity: 0; top: 50%; left: 50%; transform: translate(-50%, -50%); }
    30% { opacity: 0.7; }
    100% { width: 900px; height: 900px; opacity: 0; top: 50%; left: 50%; transform: translate(-50%, -50%); }
}

/* 悬浮六边形 */
.hero-geo {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.hero-geo-hex {
    position: absolute;
    width: 30px;
    height: 34px;
    background: rgba(0, 180, 255, 0.08);
    clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
    animation: geo-float 8s ease-in-out infinite;
}

.hero-geo-hex:nth-child(1) { top: 25%; left: 10%; animation-delay: 0s; width: 24px; height: 28px; }
.hero-geo-hex:nth-child(2) { top: 15%; right: 8%; animation-delay: -3s; width: 32px; height: 36px; }
.hero-geo-hex:nth-child(3) { top: 45%; left: 85%; animation-delay: -5s; width: 20px; height: 24px; }

@keyframes geo-float {
    0%, 100% { transform: translateY(0) rotate(0deg); opacity: 0.3; }
    50% { transform: translateY(-20px) rotate(30deg); opacity: 0.7; }
}

.hero-dna {
    position: absolute;
    top: 15%;
    right: 4%;
    width: 70px;
    height: 220px;
    opacity: 0.4;
    animation: dna-float 8s ease-in-out infinite;
}

.dna-strand {
    position: absolute;
    width: 100%;
    height: 100%;
    background: repeating-linear-gradient(
        180deg,
        rgba(200,225,255,0.6) 0px,
        rgba(200,225,255,0.6) 8px,
        transparent 8px,
        transparent 16px
    );
    border-radius: 35px;
    animation: dna-spin 4s linear infinite;
}

/* 电路线条增强 */
.hero-circuit {
    position: absolute;
    bottom: 12%;
    left: 6%;
    width: 180px;
    height: 100px;
    opacity: 0.35;
}

.circuit-line {
    position: absolute;
    background: rgba(200, 230, 255, 0.8);
    box-shadow: 0 0 8px rgba(0, 200, 255, 0.4);
    animation: circuit-pulse 2s ease-in-out infinite;
}

@keyframes circuit-pulse {
    0%, 100% { opacity: 0.3; box-shadow: 0 0 6px rgba(200, 230, 255, 0.3); }
    50% { opacity: 1; box-shadow: 0 0 18px rgba(150, 200, 255, 0.9); }
}

.dna-strand {
    position: absolute;
    width: 100%;
    height: 100%;
    background: repeating-linear-gradient(
        180deg,
        rgba(255,255,255,0.4) 0px,
        rgba(255,255,255,0.4) 8px,
        transparent 8px,
        transparent 16px
    );
    border-radius: 30px;
    animation: dna-spin 4s linear infinite;
}

.dna-strand-2 {
    animation: dna-spin 4s linear infinite reverse;
    left: 20px;
}

@keyframes dna-float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(5deg); }
}

@keyframes dna-spin {
    0% { transform: rotateX(0deg) rotateY(0deg); }
    100% { transform: rotateX(360deg) rotateY(180deg); }
}

/* 科技网格 */
.hero-grid {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: grid-flow 20s linear infinite;
}

@keyframes grid-flow {
    0% { transform: translate(0, 0); }
    100% { transform: translate(50px, 50px); }
}

/* 电路线条 */
.hero-circuit {
    position: absolute;
    bottom: 15%;
    left: 8%;
    width: 150px;
    height: 80px;
    opacity: 0.25;
}

.circuit-line {
    position: absolute;
    background: rgba(255,255,255,0.6);
    animation: circuit-pulse 2s ease-in-out infinite;
}

.circuit-line:nth-child(1) { width: 50px; height: 2px; left: 0; top: 0; }
.circuit-line:nth-child(2) { width: 2px; height: 30px; left: 50px; top: 0; animation-delay: 0.3s; }
.circuit-line:nth-child(3) { width: 30px; height: 2px; left: 50px; top: 30px; animation-delay: 0.6s; }
.circuit-line:nth-child(4) { width: 2px; height: 25px; left: 80px; top: 30px; animation-delay: 0.9s; }
.circuit-line:nth-child(5) { width: 40px; height: 2px; left: 80px; top: 55px; animation-delay: 1.2s; }
.circuit-line:nth-child(6) { width: 2px; height: 25px; left: 120px; top: 55px; animation-delay: 1.5s; }
.circuit-line:nth-child(7) { width: 30px; height: 2px; left: 120px; top: 55px; animation-delay: 1.8s; }

@keyframes circuit-pulse {
    0%, 100% { opacity: 0.3; box-shadow: 0 0 5px rgba(255,255,255,0.3); }
    50% { opacity: 1; box-shadow: 0 0 15px rgba(255,255,255,0.8); }
}

.hero h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 16px;
    position: relative;
    animation: fadeInUp 0.8s ease-out;
    text-shadow: 0 2px 20px rgba(0,0,0,0.2);
}

.hero-title-animate {
    font-size: 1.5rem;
    font-weight: 600;
    color: #fff;
    margin-bottom: 20px;
    animation: title-glow 2s ease-in-out infinite, fadeInUp 0.8s ease-out 0.2s backwards;
    text-shadow: 0 0 20px rgba(255,255,255,0.5);
}

@keyframes title-glow {
    0%, 100% { opacity: 0.8; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.05); }
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    width: min(760px, calc(100% - 40px));
    margin: 44px auto 0;
    gap: 20px;
    padding: 4px 0;
    position: relative;
    z-index: 1;
}

.hero-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 28px 16px 24px;
    background: rgba(255, 255, 255, 0.06);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 16px;
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.hero-stat::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 16px;
    padding: 1px;
    background: linear-gradient(135deg, rgba(0, 200, 255, 0.4), transparent 40%, transparent 60%, rgba(100, 180, 255, 0.3));
    -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;
    animation: stat-border-shift 3s ease-in-out infinite;
}

@keyframes stat-border-shift {
    0%, 100% { opacity: 0.4; }
    50% { opacity: 1; }
}

.hero-stat:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-4px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
}

.hero-stat-num {
    font-size: 2.8rem;
    font-weight: 800;
    line-height: 1;
    background: linear-gradient(180deg, #ffffff 0%, #80d0ff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.02em;
    filter: drop-shadow(0 0 18px rgba(100, 200, 255, 0.5));
    font-family: 'SF Pro Display', 'PingFang SC', -apple-system, sans-serif;
    animation: num-glow 3s ease-in-out infinite;
}

@keyframes num-glow {
    0%, 100% { filter: drop-shadow(0 0 18px rgba(100, 200, 255, 0.5)); }
    50% { filter: drop-shadow(0 0 32px rgba(100, 200, 255, 0.8)); }
}

.hero-stat-label {
    font-size: 0.8rem;
    color: rgba(180, 220, 255, 0.75);
    margin-top: 10px;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    transition: color 0.35s;
}

.hero-stat:hover .hero-stat-label {
    color: rgba(200, 235, 255, 0.95);
}

.hero-notice {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: rgba(255,255,255,0.15);
    border: 1px solid rgba(255,255,255,0.3);
    border-radius: 30px;
    padding: 12px 28px;
    margin: 20px 0;
    backdrop-filter: blur(10px);
}

.hero-notice-icon {
    font-size: 1.2rem;
    animation: bell-ring 1s ease-in-out infinite;
}

@keyframes bell-ring {
    0%, 100% { transform: rotate(0); }
    25% { transform: rotate(10deg); }
    75% { transform: rotate(-10deg); }
}

.hero-notice-text {
    font-size: 1rem;
    color: #fff;
    font-weight: 500;
}

.innovation-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(255,255,255,0.15);
    border: 1px solid rgba(255,255,255,0.3);
    border-radius: 25px;
    font-size: 0.9rem;
    color: #fff;
    transition: all 0.3s;
    margin-bottom: 20px;
    animation: fadeInUp 0.6s ease-out;
}

.innovation-icon {
    font-size: 1.1rem;
    animation: sparkle 1.5s ease-in-out infinite;
}

@keyframes sparkle {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.2); }
}

.innovation-banner {
    display: grid;
    grid-template-columns: auto 1fr auto 1fr;
    gap: 24px;
    align-items: center;
    background: var(--glass-bg-strong);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 24px 32px;
    margin: 30px 0;
    box-shadow: var(--glass-shadow);
    position: relative;
    overflow: hidden;
}

.innovation-banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent), var(--primary));
    background-size: 200% 100%;
    animation: gradient-slide 3s linear infinite;
}

@keyframes gradient-slide {
    0% { background-position: 0% 0%; }
    100% { background-position: 200% 0%; }
}

.innovation-banner-icon {
    font-size: 2.5rem;
    animation: bounce 2s ease-in-out infinite;
}

.innovation-banner-icon:last-child {
    animation-delay: -1s;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

.innovation-banner-content h3 {
    font-size: 1.1rem;
    color: var(--text-main);
    margin-bottom: 6px;
}

.innovation-banner-content p {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* 卡片入场动画 */
.domain-card, .article-card, .tool-item {
    animation: fadeInUp 0.6s ease-out backwards;
}

.domain-card:nth-child(1) { animation-delay: 0.1s; }
.domain-card:nth-child(2) { animation-delay: 0.2s; }
.domain-card:nth-child(3) { animation-delay: 0.3s; }
.domain-card:nth-child(4) { animation-delay: 0.4s; }

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

/* 悬浮光效 */
.domain-card:hover, .article-card:hover {
    box-shadow: 0 8px 30px rgba(0,102,204,0.15);
}

.hero .subtitle {
    font-size: 1.2rem;
    opacity: 0.9;
    margin-bottom: 35px;
    position: relative;
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero-btns {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-bottom: 50px;
    position: relative;
    animation: fadeInUp 0.8s ease-out 0.4s both;
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.btn {
    padding: 14px 32px;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    border: none;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255,255,255,0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

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

.btn-primary:hover {
    background: var(--primary-light);
    color: #fff;
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.2);
}

.btn-secondary {
    background: transparent;
    color: #fff;
    border: 2px solid rgba(255,255,255,0.6);
}

.btn-secondary:hover {
    background: rgba(255,255,255,0.15);
    border-color: #fff;
}

/* Notice Bar */
.notice-bar {
    background: var(--glass-bg-strong);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    padding: 12px 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    margin: 30px 0;
    box-shadow: var(--glass-shadow);
}

.notice-bar .text {
    flex: 1;
    font-size: 0.9rem;
    color: #7a5c00;
}

.notice-bar .close {
    color: #c9a900;
    cursor: pointer;
}

/* Section */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.section-title {
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 10px;
}

.section-title::before {
    content: '';
    width: 4px;
    height: 20px;
    background: var(--primary);
    border-radius: 2px;
}

.section-more {
    font-size: 0.85rem;
    color: var(--primary);
}

.section-more:hover {
    color: var(--primary-dark);
}

.page-shell {
    width: 100%;
    padding-top: 40px;
    padding-bottom: 40px;
}

.page-panel {
    width: 100%;
}

.mission-strip {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
    margin: 42px 0 8px;
}

.mission-item,
.focus-lab {
    background: var(--glass-bg-strong);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    box-shadow: var(--glass-shadow);
}

.mission-item {
    padding: 22px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.mission-item:hover {
    background: var(--glass-bg-hover);
    border-color: var(--glass-border-hover);
    box-shadow: var(--glass-shadow-hover);
    transform: translateY(-4px);
}

.mission-kicker {
    display: inline-flex;
    margin-bottom: 10px;
    color: var(--primary);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.08em;
}

.mission-item h3,
.focus-lab h2 {
    color: var(--text-main);
    line-height: 1.35;
}

.mission-item h3 {
    font-size: 1.05rem;
    margin-bottom: 8px;
}

.mission-item p,
.focus-lab p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.focus-lab {
    display: grid;
    grid-template-columns: 1fr 360px;
    gap: 28px;
    align-items: center;
    padding: 28px;
    margin: 30px 0 40px;
    background: var(--glass-bg-strong);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    box-shadow: var(--glass-shadow);
    overflow: hidden;
    position: relative;
}

.focus-lab::after {
    content: '';
    position: absolute;
    width: 180px;
    height: 180px;
    right: -70px;
    bottom: -90px;
    background: radial-gradient(circle, rgba(0,87,217,0.1), transparent 70%);
    pointer-events: none;
}

.focus-lab h2 {
    font-size: 1.35rem;
    margin-bottom: 10px;
}

.focus-list {
    display: grid;
    gap: 10px;
}

.focus-list span {
    padding: 12px 16px;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur-light);
    -webkit-backdrop-filter: var(--glass-blur-light);
    border: 1px solid var(--glass-border);
    border-radius: 10px;
    color: var(--text-secondary);
    font-size: 0.88rem;
    position: relative;
    z-index: 1;
    transition: all 0.25s;
    cursor: pointer;
}

.focus-list span:hover {
    background: var(--glass-bg-hover);
    border-color: var(--primary);
    color: var(--primary);
    transform: translateX(4px);
    box-shadow: 0 4px 12px rgba(0, 87, 217, 0.1);
}

/* Domain Cards */
.domain-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin: 30px 0;
}

.domain-card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    padding: 24px;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    box-shadow: var(--glass-shadow);
}

.domain-card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--radius);
    background: linear-gradient(135deg, rgba(255,255,255,0.35) 0%, transparent 50%);
    pointer-events: none;
}

.domain-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s;
    border-radius: 3px 3px 0 0;
}

.domain-card:hover {
    background: var(--glass-bg-hover);
    border-color: var(--glass-border-hover);
    box-shadow: var(--glass-shadow-hover);
    transform: translateY(-6px);
}

.domain-card:hover::after {
    transform: scaleX(1);
}

.domain-card:hover .domain-icon {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 4px 16px rgba(0, 87, 217, 0.2);
}

.domain-icon {
    width: 52px;
    height: 52px;
    background: linear-gradient(135deg, rgba(0,102,204,0.12), rgba(0,102,204,0.18));
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    margin-bottom: 16px;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.domain-card h3 {
    font-size: 1.05rem;
    margin-bottom: 10px;
    color: var(--text-main);
}

.domain-card p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.domain-meta {
    display: flex;
    gap: 12px;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 16px;
    padding-top: 12px;
    border-top: 1px solid rgba(0, 0, 0, 0.06);
}

/* Recruit Section */
.recruit-section {
    margin: 40px 0;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    align-items: stretch;
}

.recruit-content {
    background: var(--glass-bg-strong);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    padding: 20px 24px;
    box-shadow: var(--glass-shadow);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.recruit-content:hover {
    background: var(--glass-bg-hover);
    border-color: var(--glass-border-hover);
    transform: translateY(-4px);
    box-shadow: var(--glass-shadow-hover);
}

.recruit-content h3 {
    font-size: 1rem;
    margin-bottom: 6px;
    color: var(--text-main);
}

.recruit-content p {
    font-size: 0.82rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.recruit-tags {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.recruit-tag {
    padding: 6px 12px;
    background: rgba(0, 102, 204, 0.08);
    border-radius: 20px;
    font-size: 0.8rem;
    color: var(--primary);
}

/* Main Content */
.main-content {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 30px;
    padding: 40px 0;
}

.recruit-content h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
}

.recruit-content p {
    opacity: 0.9;
    font-size: 0.9rem;
    margin-bottom: 14px;
}

.recruit-tags {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.recruit-tag {
    padding: 6px 12px;
    background: rgba(255,255,255,0.2);
    border-radius: 20px;
    font-size: 0.8rem;
}

.recruit-section .btn-primary {
    background: #fff;
    color: var(--primary);
    white-space: nowrap;
}

/* Article Cards */
.articles-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.article-card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    box-shadow: var(--glass-shadow);
}

.article-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s;
}

.article-card:hover {
    background: var(--glass-bg-hover);
    border-color: var(--glass-border-hover);
    box-shadow: var(--glass-shadow-hover);
    transform: translateY(-6px);
}

.article-card:hover::after {
    transform: scaleX(1);
}

.article-card:hover .article-cover img {
    transform: scale(1.08);
}

.article-card:hover .article-cover-default {
    transform: scale(1.1);
}

.article-cover {
    height: 140px;
    background: linear-gradient(135deg, rgba(0,102,204,0.08), rgba(0,102,204,0.15));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    position: relative;
    overflow: hidden;
}

.article-cover-default {
    font-size: 2.8rem;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 0.7;
}

.article-cover .tag {
    position: absolute;
    top: 10px;
    left: 10px;
    padding: 5px 12px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: #fff;
    border-radius: 6px;
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    box-shadow: 0 2px 8px rgba(0, 87, 217, 0.25);
}

.article-body {
    padding: 18px;
}

.article-body h3 {
    font-size: 1rem;
    margin-bottom: 8px;
    color: var(--text-main);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-excerpt {
    font-size: 0.82rem;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: 12px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-meta {
    display: flex;
    gap: 14px;
    font-size: 0.78rem;
    color: var(--text-muted);
    margin-bottom: 10px;
    flex-wrap: nowrap;
    overflow: hidden;
}
.article-meta span {
    white-space: nowrap;
}

.article-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.article-tag {
    padding: 4px 10px;
    background: rgba(0,102,204,0.08);
    color: var(--primary);
    border-radius: 6px;
    font-size: 0.73rem;
    font-weight: 500;
    transition: all 0.2s;
}

.article-tag:hover {
    background: rgba(0,102,204,0.16);
}

/* Tools Grid */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-top: 30px;
}

.tool-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 18px 20px;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--glass-shadow);
}

.tool-item:hover {
    background: var(--glass-bg-hover);
    border-color: var(--glass-border-hover);
    box-shadow: var(--glass-shadow-hover);
    transform: translateY(-4px);
}

.tool-icon {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, rgba(0,102,204,0.1), rgba(0,102,204,0.18));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    flex-shrink: 0;
    transition: all 0.3s;
}

.tool-item:hover .tool-icon {
    transform: scale(1.1);
    box-shadow: 0 4px 12px rgba(0, 87, 217, 0.15);
}

.tool-info h4 {
    font-size: 0.92rem;
    margin-bottom: 4px;
    color: var(--text-main);
}

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

.tool-info p {
    font-size: 0.8rem;
    color: var(--text-muted);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.tool-stats {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.82rem;
    color: var(--accent);
    font-weight: 600;
    margin-left: auto;
    white-space: nowrap;
    flex-shrink: 0;
    padding: 4px 12px;
    background: rgba(255, 122, 26, 0.08);
    border-radius: 20px;
}

/* Category Pills */
.category-pills {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 24px;
}

.category-pill {
    padding: 8px 18px;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur-light);
    -webkit-backdrop-filter: var(--glass-blur-light);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    transition: all 0.25s;
}

.category-pill:hover, .category-pill.active {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
    box-shadow: 0 4px 12px rgba(0, 87, 217, 0.25);
}

/* Sidebar */
.sidebar {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.sidebar-card {
    background: var(--glass-bg-strong);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--glass-shadow);
}

.sidebar-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    color: var(--text-main);
}

.product-direction {
    padding: 14px;
    background: var(--glass-bg);
    border: 1px solid transparent;
    border-radius: 10px;
    margin-bottom: 10px;
    transition: all 0.25s;
}

.product-direction:hover {
    background: var(--glass-bg-hover);
    border-color: var(--glass-border-hover);
    transform: translateX(4px);
    box-shadow: 0 4px 12px rgba(0, 87, 217, 0.08);
}

.product-direction h4 {
    font-size: 0.9rem;
    margin-bottom: 4px;
    color: var(--text-main);
}

.product-direction p {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.quick-links {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.quick-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    background: var(--glass-bg);
    border: 1px solid transparent;
    border-radius: 10px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    transition: all 0.25s;
}

.quick-link:hover {
    background: var(--glass-bg-hover);
    border-color: var(--primary);
    color: var(--primary);
    transform: translateX(4px);
    box-shadow: 0 4px 12px rgba(0, 87, 217, 0.08);
}

/* Footer */
footer {
    background: var(--bg-dark);
    color: #fff;
    padding: 50px 0 25px;
    margin-top: 60px;
}

.footer-main {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 35px;
}

.footer-brand p {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.7);
    margin-top: 12px;
}

.footer-col h4 {
    font-size: 0.95rem;
    margin-bottom: 16px;
    color: #fff;
}

.footer-col a {
    display: block;
    color: rgba(255,255,255,0.6);
    font-size: 0.85rem;
    margin-bottom: 10px;
}

.footer-col a:hover {
    color: var(--primary-light);
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
    color: rgba(255,255,255,0.5);
    font-size: 0.85rem;
}

/* Scroll Top */
.scroll-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1.2rem;
    transition: all 0.3s;
    z-index: 99;
    box-shadow: 0 4px 15px rgba(0,102,204,0.35);
    opacity: 0;
    transform: translateY(20px);
}

.scroll-top.visible {
    opacity: 1;
    transform: translateY(0);
}

.scroll-top:hover {
    background: var(--primary-dark);
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(0,102,204,0.45);
}

/* Article Detail TOC - 右侧悬浮 */
.toc-float {
    position: fixed;
    right: max(20px, calc((100vw - 1200px) / 2 - 270px));
    top: 100px;
    width: 230px;
    max-height: calc(100vh - 140px);
    overflow-y: auto;
    background: var(--glass-bg-strong);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    padding: 16px;
    box-shadow: var(--glass-shadow);
    z-index: 50;
    transition: opacity 0.3s;
}

.toc-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 10px;
    margin-bottom: 8px;
    border-bottom: 1px solid rgba(0,0,0,0.06);
}

.toc-title {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--text-main);
}

.toc-toggle {
    background: none;
    border: 1px solid rgba(0,0,0,0.1);
    border-radius: 6px;
    padding: 3px 10px;
    font-size: 0.72rem;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.2s;
}

.toc-toggle:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.toc-nav {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.toc-link {
    display: block;
    padding: 5px 8px;
    border-radius: 6px;
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.2s;
    line-height: 1.4;
    border-left: 2px solid transparent;
}

.toc-link:hover {
    background: rgba(0,102,204,0.06);
    color: var(--primary);
}

.toc-link.active {
    background: rgba(0,102,204,0.08);
    color: var(--primary);
    border-left-color: var(--primary);
    font-weight: 500;
}

.toc-link-h1 { padding-left: 8px; font-weight: 500; }
.toc-link-h2 { padding-left: 20px; }
.toc-link-h3 { padding-left: 32px; font-size: 0.76rem; }

.article-detail-box {
    background: #fffef5;
    border-radius: var(--radius);
    padding: 30px;
    max-width: 100%;
    border: 1px solid rgba(0,87,217,0.10);
    box-shadow: var(--shadow);
}

.article-detail-box h1 {
    font-size: 1.8rem;
    margin-bottom: 16px;
    color: var(--text-main);
}

.detail-cover {
    height: 360px;
    min-height: 360px;
    border-radius: 12px;
    margin-bottom: 24px;
    background: #fffef5;
}

.detail-cover img {
    width: auto;
    max-width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}

.detail-section {
    margin-top: 24px;
}

.detail-card {
    padding: 32px;
    box-shadow: var(--shadow);
}

.tool-detail-head {
    display: flex;
    align-items: flex-start;
    gap: 24px;
}

.related-list-wrap {
    margin-top: 48px;
}

.related-list-wrap h3 {
    margin-bottom: 16px;
    font-size: 1.2rem;
}

.related-list {
    display: grid;
    gap: 12px;
}

.related-list-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
    padding: 16px 18px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    color: var(--text-main);
    box-shadow: var(--shadow);
    transition: transform 0.25s, border-color 0.25s, box-shadow 0.25s;
}

.related-list-item:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-hover);
    transform: translateY(-3px);
}

.related-list-item h4 {
    font-size: 1rem;
    margin-bottom: 6px;
}

.related-list-item p,
.related-list-item > span {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.related-list-item > span {
    color: var(--primary);
    white-space: nowrap;
}

/* Responsive */
@media (max-width: 1024px) {
    .domain-grid { grid-template-columns: repeat(2, 1fr); }
    .mission-strip { grid-template-columns: 1fr; }
    .focus-lab { grid-template-columns: 1fr; }
    .articles-grid { grid-template-columns: repeat(2, 1fr); }
    .main-content { grid-template-columns: 1fr; }
    .sidebar { display: none; }
    .footer-main { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .hero h1 { font-size: 2rem; }
    .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .hero-stat-num { font-size: 1.8rem; }
    .page-shell { padding-top: 28px; padding-bottom: 28px; }
    .detail-cover { height: 220px; min-height: 220px; }
    .toc-float { position: static; width: auto; max-height: none; margin-bottom: 20px; }
}

.like-btn {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur-light);
    -webkit-backdrop-filter: var(--glass-blur-light);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 6px 16px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.3s;
}

.like-btn:hover {
    background: rgba(255, 100, 100, 0.12);
    border-color: #ff6464;
    transform: scale(1.05);
}