:root {
    --color-bg-dark: #020617;
    --color-surface-dark: rgba(2, 6, 23, 0.6);
    --color-text-dark: #f5f5f7;
    --color-text-secondary: #86868b;
    --color-accent: #60a5fa;
    --color-accent-hover: #93c5fd;
    --border-radius: 18px;
    --spacing: 20px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'PingFang SC', 'Hiragino Sans GB', sans-serif;
    background: linear-gradient(135deg, #0a0a1a 0%, #1a1b2f 100%);
    color: var(--color-text-dark);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    position: relative;
    overflow-x: hidden;
}

#particleCanvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 50%, rgba(0, 113, 227, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(0, 113, 227, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 40% 20%, rgba(0, 113, 227, 0.05) 0%, transparent 40%);
    pointer-events: none;
    z-index: 0;
    animation: bgPulse 15s ease-in-out infinite;
}

@keyframes bgPulse {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: radial-gradient(circle, rgba(59, 130, 246, 0.1) 1px, transparent 1px);
    background-size: 20px 20px;
    pointer-events: none;
    z-index: 0;
    opacity: 0.1;
}

.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 10000;
    background: rgba(10, 26, 40, 0.7);
    backdrop-filter: saturate(180%) blur(30px);
    -webkit-backdrop-filter: saturate(180%) blur(30px);
    border-bottom: 1px solid rgba(96, 165, 250, 0.3);
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4), 0 0 40px rgba(96, 165, 250, 0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 16px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-size: 22px;
    font-weight: 600;
    color: var(--color-text-dark);
}

.nav-logo .accent {
    color: var(--color-accent);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 32px;
    align-items: center;
}

.nav-links a {
    color: var(--color-text-dark);
    text-decoration: none;
    font-size: 14px;
    transition: all 0.3s;
    position: relative;
    padding: 8px 12px;
    border-radius: 8px;
}

.nav-links a:hover {
    opacity: 0.7;
}

.nav-links a.active {
    background: rgba(255, 255, 255, 0.1);
    opacity: 1;
}

.nav-cta {
    background: var(--color-accent);
    padding: 8px 16px;
    border-radius: 20px;
    color: white !important;
}

.nav-cta:hover {
    background: var(--color-accent-hover);
    opacity: 1 !important;
}

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 20px 80px;
    text-align: center;
    position: relative;
    z-index: 10;
}

.hero-container {
    max-width: 980px;
    margin: 0 auto;
}

.hero-title {
    font-size: 72px;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, #ffffff 0%, #60a5fa 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: titleSlideIn 1s ease-out;
}

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

.hero-subtitle {
    font-size: 28px;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 16px;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.hero-description {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 40px;
    line-height: 1.6;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.hero-cta {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-bottom: 60px;
}

.btn-primary, .btn-secondary {
    padding: 14px 28px;
    border-radius: 24px;
    font-size: 16px;
    font-weight: 500;
    border: none;
    cursor: pointer;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-accent) 0%, #93c5fd 100%);
    color: white;
    box-shadow: 0 4px 16px rgba(96, 165, 250, 0.4);
    animation: buttonPulse 2s ease-in-out infinite;
}

@keyframes buttonPulse {
    0%, 100% {
        box-shadow: 0 4px 16px rgba(96, 165, 250, 0.4);
    }
    50% {
        box-shadow: 0 4px 24px rgba(96, 165, 250, 0.7), 0 0 40px rgba(96, 165, 250, 0.5);
    }
}

.btn-primary:hover {
    box-shadow: 0 12px 40px rgba(96, 165, 250, 0.8), 0 0 60px rgba(96, 165, 250, 0.6);
    transform: translateY(-4px) scale(1.05);
}

.btn-secondary {
    background: transparent;
    color: var(--color-accent);
    border: 2px solid var(--color-accent);
}

.btn-secondary:hover {
    background: rgba(96, 165, 250, 0.15);
    transform: translateY(-4px) scale(1.05);
    box-shadow: 0 0 30px rgba(96, 165, 250, 0.6);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
}

.stat-item {
    text-align: center;
    padding: 20px;
    background: rgba(96, 165, 250, 0.08);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    border: 1px solid rgba(96, 165, 250, 0.2);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.stat-item:hover {
    transform: translateY(-8px) scale(1.05);
    box-shadow: 0 12px 32px rgba(96, 165, 250, 0.4);
    border-color: rgba(96, 165, 250, 0.5);
    background: rgba(96, 165, 250, 0.12);
}

.stat-number {
    font-size: 56px;
    font-weight: 700;
    color: var(--color-accent);
    margin-bottom: 8px;
    text-shadow: 0 0 30px rgba(96, 165, 250, 0.6), 0 0 60px rgba(96, 165, 250, 0.3);
}

.stat-label {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.8);
}

.bento-section {
    padding: 60px 20px;
    position: relative;
    z-index: 10;
}

.about-section, .partners-section, .membership-section, .qa-section, .showcase-section {
    padding: 100px 20px;
    position: relative;
    z-index: 10;
}

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

.section-title {
    font-size: 42px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 12px;
    letter-spacing: -0.02em;
    color: var(--color-text-dark);
}

.section-subtitle {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.85);
    text-align: center;
    margin-bottom: 40px;
}

.bento-grid-services {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

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

.bento-card {
    background: linear-gradient(135deg, rgba(30, 58, 138, 0.4) 0%, rgba(59, 130, 246, 0.25) 100%);
    backdrop-filter: blur(20px);
    border: 3px solid rgba(96, 165, 250, 0.8);
    border-radius: var(--border-radius);
    padding: 24px;
    position: relative;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
    box-shadow: 0 8px 32px rgba(96, 165, 250, 0.3), 0 0 60px rgba(96, 165, 250, 0.2), inset 0 0 40px rgba(96, 165, 250, 0.1);
    min-height: 240px;
}

.bento-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, transparent, #60a5fa, #93c5fd, #60a5fa, transparent);
    animation: shimmer 2.5s ease-in-out infinite;
    box-shadow: 0 0 30px rgba(96, 165, 250, 1);
}

@keyframes shimmer {
    0%, 100% { opacity: 0.8; }
    50% { opacity: 1; }
}

.bento-card::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(96, 165, 250, 0.2) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.4s;
}

.bento-card:hover::after {
    opacity: 1;
}

.bento-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 0 100px rgba(96, 165, 250, 1), 0 16px 60px rgba(96, 165, 250, 0.4), inset 0 0 80px rgba(96, 165, 250, 0.2);
    border-color: rgba(147, 197, 253, 1);
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.5) 0%, rgba(96, 165, 250, 0.35) 100%);
}

.card-number {
    position: absolute;
    top: 16px;
    right: 16px;
    font-size: 56px;
    font-weight: 900;
    background: linear-gradient(135deg, rgba(96, 165, 250, 0.35) 0%, rgba(147, 197, 253, 0.15) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 50px rgba(96, 165, 250, 0.6);
    transition: all 0.4s;
    line-height: 1;
}

.bento-card:hover .card-number {
    transform: scale(1.1);
    background: linear-gradient(135deg, rgba(96, 165, 250, 0.6) 0%, rgba(147, 197, 253, 0.3) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 70px rgba(96, 165, 250, 0.8);
}

.card-icon {
    font-size: 44px;
    margin-bottom: 12px;
    filter: drop-shadow(0 0 30px rgba(96, 165, 250, 0.9));
    animation: iconFloat 3s ease-in-out infinite;
    transition: all 0.4s;
}

.bento-card:hover .card-icon {
    transform: scale(1.15) translateY(-6px);
    filter: drop-shadow(0 0 50px rgba(96, 165, 250, 1)) drop-shadow(0 0 70px rgba(147, 197, 253, 0.8));
}

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

.card-title {
    font-size: 40px;
    font-weight: 700;
    margin-bottom: 10px;
    color: #ffffff;
    text-shadow: 0 2px 15px rgba(96, 165, 250, 0.5);
    letter-spacing: -0.5px;
    transition: all 0.3s;
}

.bento-card:hover .card-title {
    color: #93c5fd;
    text-shadow: 0 0 25px rgba(147, 197, 253, 1);
}

.card-desc {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.5;
    margin-bottom: 12px;
    transition: all 0.3s;
    font-weight: 400;
}

.bento-card:hover .card-desc {
    color: rgba(255, 255, 255, 1);
}

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

.tag {
    padding: 6px 12px;
    background: linear-gradient(135deg, rgba(96, 165, 250, 0.4) 0%, rgba(59, 130, 246, 0.3) 100%);
    color: #bfdbfe;
    border: 1.5px solid rgba(96, 165, 250, 0.7);
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
    transition: all 0.3s;
    box-shadow: 0 3px 12px rgba(96, 165, 250, 0.4);
}

.bento-card:hover .tag {
    background: linear-gradient(135deg, rgba(96, 165, 250, 0.6) 0%, rgba(59, 130, 246, 0.5) 100%);
    border-color: rgba(147, 197, 253, 1);
    color: #ffffff;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(96, 165, 250, 0.7);
}

.about-content {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing);
}

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

.about-card {
    background: rgba(10, 26, 40, 0.4);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(96, 165, 250, 0.3);
    border-radius: var(--border-radius);
    padding: 40px;
    text-align: center;
    transition: all 0.3s;
}

.about-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 0 40px rgba(96, 165, 250, 0.4);
}

.about-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.about-card h3 {
    font-size: 24px;
    margin-bottom: 12px;
}

.about-card p {
    color: rgba(255, 255, 255, 0.75);
    line-height: 1.6;
}

.partners-carousel {
    overflow: hidden;
    position: relative;
}

.partners-track {
    display: flex;
    gap: 40px;
    animation: scroll 30s linear infinite;
}

@keyframes scroll {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

.partner-logo {
    min-width: 200px;
    height: 100px;
    background: rgba(10, 26, 40, 0.4);
    border: 1px solid rgba(96, 165, 250, 0.3);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
}

.membership-unified {
    max-width: 900px;
    margin: 0 auto;
    background: linear-gradient(135deg, rgba(10, 26, 40, 0.6) 0%, rgba(20, 40, 60, 0.5) 100%);
    backdrop-filter: blur(20px);
    border: 2px solid rgba(96, 165, 250, 0.5);
    border-radius: var(--border-radius);
    padding: 50px;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4), 0 0 60px rgba(96, 165, 250, 0.2);
    position: relative;
    overflow: hidden;
}

.membership-unified::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, transparent, #60a5fa, #93c5fd, #60a5fa, transparent);
}

.membership-benefits {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

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

.benefit-item {
    padding: 24px;
    background: rgba(96, 165, 250, 0.08);
    border: 1px solid rgba(96, 165, 250, 0.3);
    border-radius: 12px;
    transition: all 0.3s;
}

.benefit-item:hover {
    background: rgba(96, 165, 250, 0.15);
    border-color: rgba(96, 165, 250, 0.5);
    transform: translateX(8px);
    box-shadow: 0 4px 16px rgba(96, 165, 250, 0.3);
}

.benefit-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--color-accent);
    margin-bottom: 12px;
    position: relative;
    padding-left: 20px;
}

.benefit-title::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 8px;
    height: 8px;
    background: var(--color-accent);
    border-radius: 50%;
    box-shadow: 0 0 10px rgba(96, 165, 250, 0.8);
}

.benefit-item p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 15px;
    line-height: 1.6;
    margin: 0;
    padding-left: 20px;
}

.membership-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing);
    margin-bottom: 40px;
}

@media (max-width: 1024px) {
    .membership-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

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

.membership-card {
    background: rgba(10, 26, 40, 0.4);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(96, 165, 250, 0.3);
    border-radius: var(--border-radius);
    padding: 40px;
    text-align: center;
    transition: all 0.3s;
}

.membership-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 0 40px rgba(96, 165, 250, 0.4);
}

.membership-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.membership-card h3 {
    font-size: 20px;
    margin-bottom: 12px;
}

.membership-card p {
    color: rgba(255, 255, 255, 0.75);
    font-size: 14px;
    line-height: 1.6;
}

.join-cta {
    text-align: center;
    margin-top: 50px;
}

.btn-join {
    padding: 16px 48px;
    background: linear-gradient(135deg, var(--color-accent) 0%, #93c5fd 100%);
    color: white;
    border: none;
    border-radius: 24px;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 4px 16px rgba(96, 165, 250, 0.4);
}

.btn-join:hover {
    transform: translateY(-4px) scale(1.05);
    box-shadow: 0 12px 40px rgba(96, 165, 250, 0.8);
}

.qa-container {
    max-width: 800px;
    margin: 0 auto;
}

.qa-card {
    background: rgba(10, 26, 40, 0.4);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(96, 165, 250, 0.3);
    border-radius: var(--border-radius);
    padding: 60px;
    text-align: center;
}

.qa-icon {
    font-size: 64px;
    margin-bottom: 24px;
}

.qa-card h3 {
    font-size: 32px;
    margin-bottom: 16px;
}

.qa-card p {
    color: rgba(255, 255, 255, 0.75);
    margin-bottom: 32px;
    font-size: 16px;
}

.qa-form {
    display: flex;
    gap: 12px;
}

.qa-input {
    flex: 1;
    padding: 16px 20px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(96, 165, 250, 0.3);
    border-radius: 12px;
    color: white;
    font-size: 16px;
}

.qa-input:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(96, 165, 250, 0.2);
}

.qa-input::placeholder {
    color: rgba(255, 255, 255, 0.4);
}

.btn-submit {
    padding: 16px 32px;
    background: var(--color-accent);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-submit:hover {
    background: var(--color-accent-hover);
    transform: translateY(-2px);
}

.showcase-carousel {
    overflow: hidden;
}

.showcase-track {
    display: flex;
    gap: 20px;
    animation: scroll 40s linear infinite;
}

.showcase-item {
    min-width: 300px;
    height: 200px;
    background: rgba(10, 26, 40, 0.4);
    border: 1px solid rgba(96, 165, 250, 0.3);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.6);
    overflow: hidden;
    transition: all 0.3s;
}

.showcase-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 8px 24px rgba(96, 165, 250, 0.4);
    border-color: rgba(96, 165, 250, 0.6);
}

.showcase-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 12px;
}

.footer {
    background: rgba(10, 26, 40, 0.8);
    border-top: 1px solid rgba(96, 165, 250, 0.3);
    padding: 60px 20px 20px;
    position: relative;
    z-index: 10;
}

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

.footer-content {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    margin-bottom: 40px;
}

@media (max-width: 768px) {
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

.footer-section h4 {
    font-size: 18px;
    margin-bottom: 16px;
    color: var(--color-accent);
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 12px;
}

.footer-section ul li a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-size: 14px;
    transition: all 0.3s;
}

.footer-section ul li a:hover {
    color: var(--color-accent);
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(96, 165, 250, 0.2);
    color: rgba(255, 255, 255, 0.5);
    font-size: 14px;
}

/* 弹窗样式 */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10001;
    animation: fadeIn 0.3s ease-out;
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(10px);
}

.modal-content {
    position: relative;
    background: linear-gradient(135deg, rgba(10, 26, 40, 0.95) 0%, rgba(20, 40, 60, 0.95) 100%);
    border: 2px solid rgba(96, 165, 250, 0.5);
    border-radius: 20px;
    padding: 40px;
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5), 0 0 80px rgba(96, 165, 250, 0.3);
    animation: slideUp 0.3s ease-out;
}

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

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid rgba(96, 165, 250, 0.3);
}

.modal-header h3 {
    font-size: 28px;
    font-weight: 600;
    color: var(--color-text-dark);
    margin: 0;
}

.modal-close {
    background: transparent;
    border: none;
    color: rgba(255, 255, 255, 0.6);
    font-size: 36px;
    cursor: pointer;
    transition: all 0.3s;
    line-height: 1;
    padding: 0;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-close:hover {
    color: var(--color-accent);
    transform: rotate(90deg);
}

.modal-form {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
    position: relative;
}

.form-group label {
    font-size: 15px;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.9);
}

.required {
    color: #ff6b6b;
}

.form-group input,
.form-group textarea {
    padding: 14px 16px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(96, 165, 250, 0.3);
    border-radius: 12px;
    color: white;
    font-size: 15px;
    font-family: inherit;
    transition: all 0.3s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    background: rgba(255, 255, 255, 0.08);
    box-shadow: 0 0 0 3px rgba(96, 165, 250, 0.2);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: rgba(255, 255, 255, 0.4);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.error-message {
    color: #ff6b6b;
    font-size: 13px;
    min-height: 18px;
    display: block;
}

.char-count {
    text-align: right;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
}

.form-actions {
    display: flex;
    gap: 12px;
    margin-top: 10px;
}

.btn-cancel,
.btn-submit-form {
    flex: 1;
    padding: 14px 24px;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    border: none;
    position: relative;
}

.btn-cancel {
    background: rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.8);
    border: 1px solid rgba(96, 165, 250, 0.3);
}

.btn-cancel:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(96, 165, 250, 0.5);
}

.btn-submit-form {
    background: linear-gradient(135deg, var(--color-accent) 0%, #93c5fd 100%);
    color: white;
    box-shadow: 0 4px 16px rgba(96, 165, 250, 0.4);
}

.btn-submit-form:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(96, 165, 250, 0.6);
}

.btn-submit-form:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-submit-form .btn-loading {
    display: none;
}

.btn-submit-form.loading .btn-text {
    display: none;
}

.btn-submit-form.loading .btn-loading {
    display: inline-block;
}

/* 自定义提示框样式 */
.toast {
    position: fixed;
    top: 100px;
    left: 50%;
    transform: translateX(-50%) translateY(-20px);
    background: linear-gradient(135deg, rgba(10, 26, 40, 0.98) 0%, rgba(20, 40, 60, 0.98) 100%);
    border: 2px solid rgba(96, 165, 250, 0.6);
    border-radius: 16px;
    padding: 20px 32px;
    min-width: 320px;
    max-width: 500px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5), 0 0 80px rgba(96, 165, 250, 0.4);
    z-index: 10002;
    opacity: 0;
    pointer-events: none;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(20px);
}

.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
    pointer-events: auto;
}

.toast.hide {
    opacity: 0;
    transform: translateX(-50%) translateY(-20px);
}

.toast-content {
    display: flex;
    align-items: center;
    gap: 16px;
}

.toast-icon {
    font-size: 32px;
    flex-shrink: 0;
    filter: drop-shadow(0 0 10px currentColor);
}

.toast-message {
    flex: 1;
    color: var(--color-text-dark);
    font-size: 16px;
    line-height: 1.5;
    font-weight: 500;
}

.toast.success {
    border-color: rgba(34, 197, 94, 0.6);
}

.toast.success .toast-icon {
    color: #22c55e;
}

.toast.success::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, transparent, #22c55e, #4ade80, #22c55e, transparent);
    animation: shimmer 2s ease-in-out infinite;
}

.toast.error {
    border-color: rgba(239, 68, 68, 0.6);
}

.toast.error .toast-icon {
    color: #ef4444;
}

.toast.error::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, transparent, #ef4444, #f87171, #ef4444, transparent);
    animation: shimmer 2s ease-in-out infinite;
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 48px;
    }
    
    .hero-subtitle {
        font-size: 20px;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 20px;
    }
    
    .section-title {
        font-size: 36px;
    }
    
    .nav-links {
        display: none;
    }
    
    .toast {
        min-width: 280px;
        max-width: 90%;
        padding: 16px 24px;
    }
    
    .toast-icon {
        font-size: 28px;
    }
    
    .toast-message {
        font-size: 14px;
    }
}