:root {
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --secondary-color: #8b5cf6;
    --accent-color: #ec4899;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-tertiary: #9ca3af;
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-tertiary: #f3f4f6;
    --border-color: #e5e7eb;
    --divider: #f0f0f0;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --border-radius: 16px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html, body {
    height: 100%;
    overflow: hidden;
    scrollbar-width: thin;
    scrollbar-color: rgba(165,180,252,.78) rgba(255,255,255,.08);
}

/* 全站统一滚动条风格 */
* {
    scrollbar-width: thin;
    scrollbar-color: rgba(165,180,252,.78) rgba(255,255,255,.08);
}

*::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

*::-webkit-scrollbar-track {
    background: rgba(255,255,255,.06);
    border-radius: 999px;
}

*::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, rgba(199,210,254,.9), rgba(129,140,248,.8));
    border-radius: 999px;
    border: 1px solid rgba(30,41,59,.5);
}

*::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, rgba(224,231,255,.96), rgba(165,180,252,.86));
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    line-height: 1.5;
    color: #ffffff;
    background: #303030;
    display: flex;
    flex-direction: column;
    height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

/* Header Styles */
.header {
    background: rgba(48, 48, 48, 0.95);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
    flex-shrink: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
    backdrop-filter: blur(20px);
}

.header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(99, 102, 241, 0.15), transparent);
}

/* Navbar Styles */
.navbar {
    padding: 0;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1vh 24px;
    max-width: 100%;
    width: 100%;
    gap: 2rem;
    position: relative;
}

.logo-section {
    flex-shrink: 0;
}

.logo {
    color: #ffffff;
    font-size: clamp(1.1rem, 1.8vw, 1.4rem);
    font-weight: 700;
    text-decoration: none;
    letter-spacing: 0.5px;
    text-shadow: none;
    transition: var(--transition);
    white-space: nowrap;
}

.logo:hover {
    opacity: 0.8;
    color: #e0e0e0;
}

.nav-center {
    flex: 1;
    display: flex;
    justify-content: center;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: clamp(1.5rem, 3vw, 3rem);
    margin: 0;
}

.nav-link {
    color: #b0b0b0;
    text-decoration: none;
    font-size: clamp(0.9rem, 1vw, 1rem);
    font-weight: 500;
    padding: 0.6vh 0;
    border-radius: 8px;
    transition: var(--transition);
    white-space: nowrap;
    position: relative;
    letter-spacing: 0.2px;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, #8b9dc3, #a8c5e0);
    transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
    color: #ffffff;
}

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

.nav-right {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    flex-shrink: 0;
}

.nav-actions {
    display: flex;
    list-style: none;
    gap: 0.8rem;
    margin: 0;
}

.nav-action {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.icon-btn {
    padding: 0.6vh 1.2vw;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    background: rgba(80, 80, 80, 0.6);
    border-radius: 12px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.icon-btn svg {
    width: 20px;
    height: 20px;
    stroke: currentColor;
    color: #b0b0b0;
    transition: var(--transition);
}

.icon-btn:hover {
    background: rgba(80, 80, 80, 0.8);
    border-color: rgba(255, 255, 255, 0.2);
}

.icon-btn:hover svg {
    color: #ffffff;
    transform: scale(1.05);
}

.btn-recharge {
    background: rgba(80, 80, 80, 0.6) !important;
    color: white !important;
    font-weight: 600;
    box-shadow: none;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.1) !important;
    backdrop-filter: blur(10px);
}

.btn-recharge:hover {
    background: rgba(80, 80, 80, 0.8) !important;
    border-color: rgba(255, 255, 255, 0.2) !important;
}

.btn-recharge svg {
    color: #b0b0b0;
    transition: var(--transition);
}

.btn-recharge:hover svg {
    color: #ffffff;
    transform: scale(1.05);
}

.btn-login {
    padding: 0.6vh 1.2vw;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(80, 80, 80, 0.6);
    color: #b0b0b0;
    font-weight: 600;
    font-size: clamp(0.95rem, 1.2vw, 1.05rem);
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition);
    text-decoration: none;
    backdrop-filter: blur(10px);
}

.btn-login:hover {
    background: rgba(80, 80, 80, 0.8);
    border-color: rgba(255, 255, 255, 0.2);
    color: #ffffff;
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    min-height: 0;
}

/* Hero Section */
.hero-section {
    background: #303030;
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding: 6vh 2vw 4vh 2vw;
}

/* Footer */
.footer {
    flex-shrink: 0;
    padding: 12px 0;
    background: #252525;
    border-top: 1px solid rgba(255,255,255,0.08);
    text-align: center;
}
.footer-text {
    margin: 0;
    font-size: 12px;
    color: #888;
}

/* 全局充值弹窗 */
.recharge-modal-mask {
    position: fixed;
    inset: 0;
    display: none;
    align-items: center;
    justify-content: center;
    background: rgba(8, 10, 14, 0.62);
    backdrop-filter: blur(4px);
    z-index: 10000;
    padding: 16px;
}

.recharge-modal {
    position: relative;
    width: min(560px, calc(100vw - 24px));
    border-radius: 18px;
    border: 1px solid rgba(255,255,255,0.16);
    background: linear-gradient(180deg, rgba(60,62,71,0.96), rgba(46,48,56,0.95));
    box-shadow: 0 28px 60px rgba(0,0,0,0.45);
    padding: 22px;
    color: #f3f4f6;
}

.recharge-close {
    position: absolute;
    right: 10px;
    top: 8px;
    width: 34px;
    height: 34px;
    border: 0;
    border-radius: 50%;
    background: rgba(255,255,255,0.08);
    color: #e5e7eb;
    font-size: 22px;
    line-height: 1;
    cursor: pointer;
}
.recharge-close:hover { background: rgba(255,255,255,0.16); }

.recharge-head-top {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 14px;
    padding-right: 28px;
}
.recharge-head-main {
    flex: 1;
    min-width: 0;
}
.recharge-head p.recharge-head-notice {
    flex: 0 1 220px;
    margin: 0;
    padding: 10px 12px;
    font-size: 12px;
    line-height: 1.5;
    color: #fde68a;
    background: rgba(251, 191, 36, 0.1);
    border: 1px solid rgba(251, 191, 36, 0.32);
    border-radius: 10px;
}
@media (max-width: 520px) {
    .recharge-head-top {
        flex-direction: column;
        padding-right: 0;
    }
    .recharge-head p.recharge-head-notice {
        flex: 1 1 auto;
        width: 100%;
        box-sizing: border-box;
    }
}

.recharge-head h3 {
    margin: 0;
    font-size: 22px;
    letter-spacing: .3px;
}
.recharge-head p {
    margin: 6px 0 0;
    color: rgba(255,255,255,0.72);
    font-size: 13px;
}

.recharge-balance-inline {
    margin-top: 8px;
    font-size: 13px;
    color: rgba(255,255,255,0.85);
}
.recharge-balance-inline strong {
    font-size: 15px;
    color: #c7d2fe;
    font-weight: 700;
    letter-spacing: .2px;
    margin-left: 4px;
}

.recharge-amounts {
    margin-top: 18px;
    display: grid;
    grid-template-columns: repeat(5, minmax(0,1fr));
    gap: 10px;
}

.recharge-amount {
    min-height: 52px;
    border-radius: 12px;
    border: 1px solid rgba(255,255,255,0.15);
    background: rgba(255,255,255,0.05);
    color: #f9fafb;
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
    transition: all .2s ease;
    line-height: 1.25;
    padding: 8px;
}
.recharge-amount:hover { background: rgba(255,255,255,0.12); }
.recharge-amount.active {
    background: rgba(99,102,241,0.22);
    border-color: rgba(129,140,248,0.56);
    color: #e0e7ff;
}

.recharge-pay-grid {
    margin-top: 14px;
    display: grid;
    grid-template-columns: repeat(3, minmax(0,1fr));
    gap: 10px;
}
@media (max-width: 520px) {
    .recharge-pay-grid {
        grid-template-columns: repeat(2, minmax(0,1fr));
    }
    .recharge-pay[data-pay="code"] {
        grid-column: 1 / -1;
    }
}

.recharge-pay {
    border-radius: 12px;
    border: 1px solid rgba(255,255,255,0.14);
    background: rgba(255,255,255,0.05);
    color: #f3f4f6;
    text-align: left;
    padding: 12px 14px;
    cursor: pointer;
    display: grid;
    gap: 4px;
    transition: all .2s ease;
}
.recharge-pay:hover { background: rgba(255,255,255,0.12); }
.recharge-pay.active {
    border-color: rgba(110,231,183,0.7);
    background: rgba(16,185,129,0.14);
}
.recharge-pay[data-pay="code"].active {
    border-color: rgba(251,191,36,0.75);
    background: rgba(245,158,11,0.14);
}

.pay-title { font-size: 15px; font-weight: 800; }
.pay-desc { font-size: 12px; color: rgba(255,255,255,0.68); }

.recharge-summary {
    margin-top: 16px;
    padding: 12px 14px;
    border-radius: 12px;
    border: 1px solid rgba(255,255,255,0.1);
    background: rgba(255,255,255,0.04);
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.recharge-summary span { font-size: 13px; color: rgba(255,255,255,0.72); }
.recharge-summary strong { font-size: 24px; color: #fef3c7; letter-spacing: .3px; }
.recharge-hint { margin-top: 8px; font-size: 12px; color: rgba(255,255,255,0.72); }

.recharge-redeem-tip {
    margin: 14px 0 10px;
    font-size: 13px;
    color: rgba(255,255,255,0.72);
    line-height: 1.5;
}
.recharge-redeem-input {
    width: 100%;
    box-sizing: border-box;
    height: 48px;
    border-radius: 12px;
    border: 1px solid rgba(255,255,255,0.14);
    background: rgba(0,0,0,0.22);
    color: #f9fafb;
    font-size: 15px;
    font-weight: 600;
    letter-spacing: 0.06em;
    padding: 0 14px;
    outline: none;
}
.recharge-redeem-input:focus {
    border-color: rgba(251,191,36,0.55);
    box-shadow: 0 0 0 3px rgba(245,158,11,0.12);
}
.recharge-redeem-input::placeholder {
    color: rgba(255,255,255,0.35);
    font-weight: 500;
    letter-spacing: normal;
}

.recharge-feedback {
    margin-top: 8px;
    padding: 8px 10px;
    border-radius: 8px;
    font-size: 12px;
    line-height: 1.5;
    border: 1px solid rgba(255,255,255,0.16);
    background: rgba(255,255,255,0.05);
    color: #e5e7eb;
}
.recharge-feedback.success {
    border-color: rgba(52,211,153,0.7);
    background: rgba(16,185,129,0.15);
    color: #bbf7d0;
}
.recharge-feedback.error {
    border-color: rgba(248,113,113,0.75);
    background: rgba(239,68,68,0.15);
    color: #fecaca;
}

.recharge-submit { 
    margin-top: 14px;
    width: 100%;
    height: 44px;
    border: 0;
    border-radius: 12px;
    background: linear-gradient(135deg, #6366f1, #7c3aed);
    color: white;
    font-size: 15px;
    font-weight: 800;
    letter-spacing: .4px;
    cursor: pointer;
}
.recharge-submit:hover { filter: brightness(1.08); }

.footer-text a, .company-link, .beian-link {
    color: #888;
    text-decoration: none;
}
.footer-text a:hover, .company-link:hover, .beian-link:hover {
    color: #aaa;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 0%, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 100%, rgba(139, 92, 246, 0.12) 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(236, 72, 153, 0.05) 0%, transparent 70%);
    opacity: 1;
}

.hero-section::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="dots" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="rgba(99,102,241,0.04)"/></pattern></defs><rect width="100%" height="100%" fill="url(%23dots)"/></svg>');
    opacity: 0.5;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 75%;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: clamp(20px, 2.5vw, 32px);
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    background: rgba(80, 80, 80, 0.6);
    padding: 0.8vh 1.5vw;
    border-radius: 50px;
    animation: fadeInUp 0.8s ease;
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: #f5576c;
    border-radius: 50%;
    animation: pulse 2s infinite;
}

.badge-text {
    font-size: clamp(0.85rem, 1.2vw, 0.95rem);
    color: #c8d9f0;
    font-weight: 500;
    letter-spacing: 0.3px;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.6;
    }
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 3.5rem);
    font-weight: 800;
    color: white;
    text-shadow: none;
    animation: fadeInUp 0.8s ease 0.1s both;
    letter-spacing: -0.8px;
    line-height: 1.15;
    margin: 0;
}

.hero-title .accent {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: block;
    margin-top: 0.8vh;
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.15rem);
    color: #e0e0e0;
    line-height: 1.6;
    animation: fadeInUp 0.8s ease 0.2s both;
    font-weight: 400;
    letter-spacing: 0.2px;
    margin: 0;
}

.hero-buttons {
    display: flex;
    gap: clamp(16px, 2vw, 28px);
    justify-content: center;
    animation: fadeInUp 0.8s ease 0.3s both;
    flex-wrap: wrap;
    margin-top: clamp(20px, 2.5vw, 32px);
    margin-bottom: clamp(16px, 2vw, 28px);
}

.btn {
    padding: clamp(1.2vh, 1.8vh, 18px) clamp(3vw, 4.5vw, 60px);
    font-size: clamp(1rem, 1.8vw, 1.15rem);
    font-weight: 600;
    text-decoration: none;
    border-radius: 14px;
    transition: var(--transition);
    display: inline-block;
    white-space: nowrap;
    border: none;
    cursor: pointer;
    letter-spacing: 0.3px;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

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

.btn-primary {
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    color: white;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(99, 102, 241, 0.4);
}

.hero-hint {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: clamp(8px, 1vw, 14px);
    font-size: clamp(0.75rem, 0.95vw, 0.9rem);
    color: #b0b0b0;
    animation: fadeInUp 0.8s ease 0.4s both;
    margin-top: 0;
    margin-bottom: clamp(30px, 3.5vw, 44px);
    padding: clamp(12px, 1.2vw, 22px) clamp(16px, 2vw, 36px);
    background: rgba(60, 60, 60, 0.6);
    border-radius: 14px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    max-width: clamp(90%, 95vw, 95%);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    box-sizing: border-box;
}

.hint-icon {
    font-size: 1.1em;
}

/* Features Grid */
.features-grid {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(clamp(150px, 25vw, 280px), 1fr));
    gap: clamp(12px, 2vw, 36px);
    width: 100%;
    max-width: 100%;
    padding: 0 clamp(8px, 1.5vw, 24px);
    margin-top: auto;
    margin-bottom: clamp(20px, 2.5vw, 32px);
    box-sizing: border-box;
}

.feature-card {
    background: rgba(60, 60, 60, 0.8);
    padding: clamp(16px, 2vw, 36px) clamp(12px, 1.5vw, 32px);
    border-radius: var(--border-radius);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    text-align: center;
    transition: var(--transition);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.5) 0%, transparent 100%);
    opacity: 0;
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
    border-color: rgba(99, 102, 241, 0.15);
}

.feature-card:hover::before {
    opacity: 0.3;
}

.feature-icon {
    font-size: clamp(2.2rem, 4.5vw, 2.8rem);
    margin-bottom: clamp(12px, 1.5vw, 18px);
    transition: var(--transition);
}

.feature-card:hover .feature-icon {
    transform: scale(1.1);
}

.feature-card h3 {
    font-size: clamp(1.05rem, 1.8vw, 1.25rem);
    color: #ffffff;
    margin: clamp(8px, 1vw, 14px) 0 clamp(6px, 0.8vw, 10px) 0;
    font-weight: 700;
    letter-spacing: -0.3px;
    line-height: 1.3;
}

.feature-card p {
    font-size: clamp(0.85rem, 1.3vw, 0.95rem);
    color: #b0b0b0;
    margin: 0;
    line-height: 1.5;
}



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

/* Responsive */
@media (max-width: 1440px) {
    .features-grid {
        gap: clamp(1.8rem, 3vw, 2.8rem);
    }
}

@media (max-width: 1920px) {
    /* Hero Section 微调压缩 */
    .hero-section {
        padding: 4.5vh 2vw 3vh 2vw;
        justify-content: space-around;
    }
    
    .hero-content {
        gap: clamp(16px, 1.8vw, 22px);
        margin-bottom: 0;
    }
    
    .hero-title {
        font-size: clamp(2.3rem, 5.2vw, 3.2rem);
        margin-bottom: 0.7vh;
    }
    
    .hero-title .accent {
        margin-top: 0.5vh;
    }
    
    .hero-subtitle {
        font-size: clamp(0.98rem, 1.9vw, 1.12rem);
        margin-bottom: 0.9vh;
    }
    
    .hero-buttons {
        gap: clamp(14px, 1.7vw, 19px);
        margin-top: clamp(15px, 1.8vw, 20px);
        margin-bottom: clamp(12px, 1.4vw, 15px);
    }
    
    .btn {
        padding: clamp(1vh, 1.4vh, 13px) clamp(2.5vw, 3.3vw, 38px);
        font-size: clamp(0.96rem, 1.5vw, 1.04rem);
    }
    
    .hero-hint {
        gap: clamp(8px, 0.95vw, 11px);
        margin-bottom: clamp(26px, 3.2vw, 34px);
        padding: clamp(14px, 1.15vw, 17px) clamp(18px, 1.9vw, 26px);
        font-size: clamp(0.79rem, 1.05vw, 0.87rem);
    }
    
    .hint-icon {
        font-size: 1.03em;
    }
    
    /* 卡片网格 */
    .features-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: clamp(16px, 2.3vw, 26px);
        margin-bottom: clamp(16px, 1.9vw, 20px);
    }
    
    .feature-card {
        padding: clamp(18px, 1.9vw, 26px) clamp(12px, 1.4vw, 18px);
    }
    
    .feature-icon {
        font-size: clamp(2rem, 3.9vw, 2.5rem);
        margin-bottom: clamp(10px, 1.1vw, 13px);
    }
    
    .feature-card h3 {
        font-size: clamp(0.96rem, 1.5vw, 1.13rem);
        margin: clamp(7px, 0.75vw, 9px) 0 clamp(5px, 0.55vw, 7px) 0;
    }
    
    .feature-card p {
        font-size: clamp(0.81rem, 1.15vw, 0.91rem);
    }
}

@media (min-width: 1025px) and (max-width: 1440px) {
    .features-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: clamp(12px, 2vw, 20px);
    }
    
    .feature-card {
        padding: clamp(14px, 1.8vw, 24px) clamp(10px, 1.2vw, 16px);
    }
    
    .feature-icon {
        margin-bottom: clamp(10px, 1.2vw, 12px);
    }
    
    .feature-card h3 {
        margin: clamp(6px, 0.8vw, 8px) 0 clamp(4px, 0.6vw, 6px) 0;
        font-size: clamp(0.95rem, 1.5vw, 1.1rem);
    }
    
    .feature-card p {
        font-size: clamp(0.8rem, 1.1vw, 0.9rem);
    }
}

@media (max-width: 900px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.2rem;
        max-width: 95%;
    }

    .hero-hint {
        max-width: 95%;
    }
}

@media (max-width: 768px) {
    .navbar .container {
        flex-direction: column;
        gap: 1vh;
        padding: 1vh 24px;
    }

    .logo-section {
        width: 100%;
        text-align: center;
    }

    .nav-center {
        width: 100%;
    }

    .nav-links {
        gap: 1.2rem;
        flex-wrap: wrap;
        justify-content: center;
    }

    .nav-actions {
        gap: 0.6rem;
    }

    .hero-section {
        padding: 4vh 2vw 2vh 2vw;
    }

    .hero-content {
        max-width: 90%;
        gap: 1.5vh;
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
        margin-bottom: 1.5vh;
        max-width: 95%;
    }

    .hero-hint {
        max-width: 95%;
        white-space: normal;
        overflow: visible;
        text-overflow: clip;
    }
}

@media (max-width: 640px) {
    .navbar .container {
        padding: 1vh 16px;
        gap: 1rem;
    }

    .logo {
        font-size: 1rem;
    }

    .nav-links {
        gap: 0.8rem;
        font-size: 0.9rem;
    }

    .hero-buttons {
        flex-direction: column;
        width: 100%;
        max-width: 280px;
    }

    .btn {
        width: 100%;
        padding: clamp(1vh, 1.5vh, 16px) clamp(2.5vw, 3.5vw, 40px);
    }

    .container {
        padding: 0 16px;
    }

    .hero-section {
        padding: 3vh 2vw 1.5vh 2vw;
    }

    .hero-content {
        max-width: 95%;
        gap: 1.2vh;
    }

    .hero-title {
        font-size: clamp(1.8rem, 5vw, 2.5rem);
    }

    .hero-subtitle {
        font-size: clamp(0.9rem, 1.8vw, 1rem);
    }

    .feature-card {
        padding: clamp(1.5rem, 2vh, 2rem) clamp(1rem, 2vw, 1.5rem);
    }

    .feature-icon {
        font-size: clamp(2rem, 4vw, 2.4rem);
        margin-bottom: 1vh;
    }

    .feature-card h3 {
        font-size: clamp(0.95rem, 1.6vw, 1.1rem);
        margin: 0.6vh 0 0.4vh 0;
    }

    .feature-card p {
        font-size: clamp(0.8rem, 1.2vw, 0.9rem);
    }
}

@media (max-width: 480px) {
    .navbar .container {
        padding: 0.8vh 12px;
        gap: 0.8rem;
    }

    .logo {
        font-size: 0.9rem;
    }

    .nav-links {
        gap: 0.6rem;
        font-size: 0.85rem;
    }

    .icon-btn {
        padding: 0.5vh 0.8vw;
    }

    .icon-btn svg {
        width: 18px;
        height: 18px;
    }

    .hero-section {
        padding: 2.5vh 1.5vw 1.5vh 1.5vw;
        justify-content: flex-start;
    }

    .hero-content {
        max-width: 100%;
        gap: 1vh;
        margin-bottom: 1.5vh;
    }

    .hero-badge {
        padding: 0.6vh 1.2vw;
    }

    .badge-text {
        font-size: clamp(0.75rem, 1vw, 0.85rem);
    }

    .hero-title {
        font-size: clamp(1.5rem, 4.5vw, 2rem);
        margin-bottom: 0.5vh;
    }

    .hero-title .accent {
        margin-top: 0.4vh;
    }

    .hero-subtitle {
        font-size: clamp(0.8rem, 1.5vw, 0.9rem);
        margin-bottom: 1vh;
    }

    .hero-buttons {
        width: 100%;
        max-width: 100%;
        margin-bottom: 1vh;
    }

    .btn {
        width: 100%;
        padding: clamp(0.9vh, 1.3vh, 14px) clamp(2vw, 3vw, 30px);
        font-size: clamp(0.9rem, 1.5vw, 1rem);
    }

    .hero-hint {
        max-width: 100%;
        margin-bottom: 1.5vh;
        padding: 1.2vh 1.8vw;
        font-size: clamp(0.75rem, 1vw, 0.85rem);
        white-space: normal;
        overflow: visible;
    }

    .hint-icon {
        font-size: 1em;
        flex-shrink: 0;
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: 0.8rem;
        max-width: 100%;
        padding: 0 1.5vw;
        margin-bottom: 1vh;
    }

    .feature-card {
        padding: clamp(1.2rem, 1.8vh, 1.5rem) clamp(0.8rem, 1.8vw, 1.2rem);
    }

    .feature-icon {
        font-size: clamp(1.8rem, 3.5vw, 2.2rem);
        margin-bottom: 0.8vh;
    }

    .feature-card h3 {
        font-size: clamp(0.9rem, 1.4vw, 1rem);
        margin: 0.5vh 0 0.3vh 0;
    }

    .feature-card p {
        font-size: clamp(0.75rem, 1.1vw, 0.85rem);
    }

    .container {
        padding: 0 12px;
    }
}

/* 高清显示器优化 (1920x1080) */
@media (min-width: 1920px) and (max-width: 2559px) {
    .hero-title { font-size: 3.8rem; }
    .hero-subtitle { font-size: 1.25rem; }
    .btn { font-size: 1.15rem; }
    .hero-hint { font-size: 0.95rem; }
    .feature-card h3 { font-size: 1.25rem; }
    .feature-card p { font-size: 1rem; }
    .logo { font-size: 1.5rem; }
    .nav-link { font-size: 1.05rem; }
}

/* 2K显示器优化 (2560x1440) */
@media (min-width: 2560px) and (max-width: 3839px) {
    .hero-title { font-size: 4.2rem; }
    .hero-subtitle { font-size: 1.35rem; }
    .btn { font-size: 1.25rem; }
    .hero-hint { font-size: 1.02rem; }
    .feature-icon { font-size: 3.1rem; }
    .feature-card h3 { font-size: 1.35rem; }
    .feature-card p { font-size: 1.08rem; }
    .logo { font-size: 1.7rem; }
    .nav-link { font-size: 1.12rem; }
    .footer-text { font-size: 0.95rem; }
    
    .hero-section { padding: 7.5vh 2vw 5vh 2vw; }
    .hero-content { gap: 26px; }
    .hero-buttons { gap: 22px; margin-top: 26px; margin-bottom: 22px; }
    .hero-hint { gap: 10px; margin-bottom: 36px; padding: 18px 30px; }
    .feature-icon { margin-bottom: 15px; }
    .feature-card { padding: 30px 26px; }
    .feature-card h3 { margin: 10px 0 8px 0; }
    .features-grid { gap: 28px; margin-bottom: 26px; }
}

/* ===== 个人中心 ===== */
body.profile-view {
    overflow: hidden;
}

body.profile-view .main-content {
    overflow: hidden;
}

.profile-page {
    width: calc(100vw - 54px);
    max-width: 2400px;
    height: calc(100vh - 96px);
    margin: 10px auto;
    color: #eef2ff;
    display: flex;
}

.profile-grid {
    display: grid;
    grid-template-columns: minmax(280px, 320px) minmax(0, 1fr);
    gap: 16px;
    align-items: stretch;
    width: 100%;
    height: 100%;
}

.profile-card {
    background: linear-gradient(180deg, rgba(72, 73, 82, 0.78), rgba(58, 59, 67, 0.72));
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: 16px;
    box-shadow: 0 14px 28px rgba(0,0,0,0.22);
    backdrop-filter: blur(10px);
}

.profile-user-card { padding: 12px; }
.profile-user-top { display: flex; align-items: center; gap: 10px; }
.profile-avatar {
    width: 44px; height: 44px; border-radius: 50%;
    background: linear-gradient(135deg, #8e95a8, #5a6274);
    color: #fff; font-weight: 800; font-size: 17px;
    display: grid; place-items: center;
}
.profile-name { font-size: 16px; font-weight: 800; letter-spacing: 0.2px; }
.profile-email { font-size: 11px; color: rgba(255,255,255,0.72); margin-top: 1px; }
.profile-vip {
    margin-top: 10px; display: inline-flex; padding: 4px 10px;
    border-radius: 999px; font-size: 10px;
    border: 1px solid rgba(255,255,255,0.2);
    background: rgba(255,255,255,0.07);
}

.profile-metrics {
    margin-top: 10px;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 8px;
}
.profile-metric {
    display: grid;
    grid-template-columns: 1fr;
    justify-items: center;
    align-content: center;
    gap: 2px;
    min-height: 58px;
    padding: 6px 5px;
    border-radius: 10px;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
}
.metric-num { font-weight: 800; font-size: 13px; }
.metric-lbl { font-size: 10px; color: rgba(255,255,255,0.72); }

.profile-quick-actions {
    margin-top: auto;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 8px;
}
.profile-btn {
    height: 32px; border-radius: 9px; border: 1px solid rgba(255,255,255,0.16);
    background: rgba(255,255,255,0.06); color: #f3f4f6; text-decoration: none;
    display: inline-flex; align-items: center; justify-content: center;
    font-size: 11px; font-weight: 700;
    transition: all .2s ease;
    white-space: nowrap;
}
.profile-btn.primary { background: #525b6c; border-color: #5d6678; }
.profile-btn:hover { background: rgba(255,255,255,0.13); }
.profile-btn.primary:hover { background: #5d6678; }
.profile-btn.danger {
    background: rgba(248,113,113,0.12);
    border-color: rgba(248,113,113,0.35);
    color: #fecaca;
}
.profile-btn.danger:hover {
    background: rgba(248,113,113,0.2);
    color: #ffe4e6;
}

.profile-main {
    display: flex;
    flex-direction: column;
    gap: 8px;
    min-height: 0;
    height: 100%;
}

.works-center-section {
    flex: 1;
    min-height: 0;
    display: flex;
    flex-direction: column;
}

.works-center-section .works-entry-grid {
    flex: 0 0 auto;
}

.works-center-section .works-content-panel {
    flex: 1;
    min-height: 0;
}
.profile-left-main {
    display: grid;
    grid-template-rows: repeat(3, minmax(0, 1fr));
    align-content: stretch;
    height: 100%;
    flex: 1;
    min-height: 0;
}
.profile-left-main > .profile-card {
    min-height: 0;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}
.profile-left-main > .profile-card.profile-security-section {
    justify-content: flex-start;
}
/* 左侧三卡均分时，进一步压缩账号/安全模块，避免内容被裁切 */
.profile-left-main .profile-section { padding: 6px 8px; }
.profile-left-main .section-head { margin-bottom: 4px; }
.profile-left-main .section-head h3 { font-size: 13px; }
.profile-left-main .info-grid { gap: 6px; }
.profile-left-main .info-item { padding: 6px 7px; gap: 1px; }
.profile-left-main .info-item span { font-size: 10px; }
.profile-left-main .info-item strong { font-size: 11px; }
.profile-left-main .safe-list { gap: 7px; }
.profile-left-main .safe-list li { padding: 8px 9px; min-height: 0; }
.profile-left-main .safe-title { font-size: 11px; }
.profile-left-main .safe-desc { font-size: 9px; }

.profile-section { padding: 8px 9px; }
.section-head {
    display: flex; align-items: center; justify-content: space-between;
    margin-bottom: 6px;
}
.section-head h3 { font-size: 14px; margin: 0; letter-spacing: 0.2px; }
.tiny-btn {
    height: 30px;
    padding: 0 11px;
    border-radius: 9px;
    border: 1px solid rgba(255,255,255,0.16);
    background: rgba(255,255,255,0.08);
    color: #e5e7eb;
    font-size: 12px;
    font-weight: 700;
    cursor: pointer;
    transition: all .2s ease;
}
.tiny-btn:hover { background: rgba(255,255,255,0.14); }
.tiny-link { color: #c7d2fe; font-size: 12px; text-decoration: none; }

.info-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(180px, 1fr));
    gap: 10px;
}
.info-grid-single {
    grid-template-columns: 1fr;
    grid-template-rows: repeat(4, minmax(0, 1fr));
    flex: 1;
    min-height: 0;
}
.info-item {
    padding: 7px 8px; border-radius: 9px;
    background: rgba(255,255,255,0.045);
    border: 1px solid rgba(255,255,255,0.09);
    display: grid; gap: 2px;
}
.info-item span { font-size: 10px; color: rgba(255,255,255,0.70); }
.info-item strong { font-size: 11px; }
.info-item strong.ok { color: #86efac; }

.safe-list { list-style: none; display: grid; gap: 5px; }
.profile-security-section .safe-list {
    flex: 1;
    grid-template-rows: repeat(3, minmax(0, 1fr));
    align-content: stretch;
}
.safe-list li {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 8px;
    padding: 7px 8px;
    border-radius: 10px;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.11);
}
.profile-security-section .safe-list li {
    height: 100%;
    align-content: center;
}
.safe-title { font-size: 12px; font-weight: 800; margin: 0; line-height: 1.2; }
.safe-desc { font-size: 10px; color: rgba(255,255,255,0.7); margin: 2px 0 0; line-height: 1.25; }
.tag {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 28px;
    padding: 0 10px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 700;
    white-space: nowrap;
    border: 1px solid rgba(255,255,255,0.18);
    background: rgba(255,255,255,0.08);
}
.tag.ok { color: #86efac; border-color: rgba(134,239,172,0.45); }

.timeline { list-style: none; display: grid; gap: 8px; }
.timeline li {
    display: grid; grid-template-columns: 92px 1fr; gap: 8px;
    padding: 10px 10px; border-radius: 10px;
    background: rgba(255,255,255,0.045); border: 1px solid rgba(255,255,255,0.09);
}
.timeline li span { font-size: 11px; color: rgba(255,255,255,0.65); }
.timeline li p { margin: 0; font-size: 12px; color: #f3f4f6; }

.works-entry-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
    margin-top: 6px;
}

.works-entry-btn {
    height: 44px;
    border-radius: 10px;
    border: 1px solid rgba(255,255,255,0.16);
    background: rgba(255,255,255,0.06);
    color: #f3f4f6;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 700;
    transition: all .2s ease;
    cursor: pointer;
}

.works-entry-btn:hover {
    background: rgba(255,255,255,0.13);
}

.works-entry-btn.active {
    background: rgba(99,102,241,0.2);
    border-color: rgba(129,140,248,0.45);
    color: #e0e7ff;
}

.works-content-panel {
    margin-top: 12px;
    min-height: 360px;
    flex: 1;
    border-radius: 14px;
    border: 1px solid rgba(255,255,255,0.12);
    background: rgba(255,255,255,0.04);
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 12px;
    text-align: left;
    overflow: hidden;
}
.works-list-wrap { display: grid; gap: 8px; overflow: auto; min-height: 0; flex: 1; padding-right: 4px; }
.works-row {
    display: grid;
    grid-template-columns: 120px 120px minmax(320px, 1fr) 110px 190px;
    gap: 8px;
    padding: 10px 12px;
    border-radius: 10px;
    border: 1px solid rgba(255,255,255,0.1);
    background: rgba(255,255,255,0.04);
    align-items: center;
    font-size: 12px;
}
.works-row span { overflow: visible; text-overflow: clip; white-space: normal; word-break: break-word; }
.works-type-tag {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 50px;
    height: 24px;
    padding: 0 10px;
    border-radius: 999px;
    font-style: normal;
    font-size: 11px;
    font-weight: 700;
    border: 1px solid rgba(255,255,255,0.2);
    background: rgba(255,255,255,0.1);
    color: #e5e7eb;
}
.works-type-tag.text {
    background: rgba(99,102,241,0.18);
    border-color: rgba(129,140,248,0.45);
    color: #e0e7ff;
}
.works-type-tag.image {
    background: rgba(16,185,129,0.16);
    border-color: rgba(52,211,153,0.45);
    color: #d1fae5;
}
.works-type-tag.video {
    background: rgba(249,115,22,0.16);
    border-color: rgba(251,146,60,0.45);
    color: #ffedd5;
}
.works-type-tag.default {
    background: rgba(255,255,255,0.08);
    border-color: rgba(255,255,255,0.2);
    color: #e5e7eb;
}
.works-row-head {
    background: rgba(99,102,241,0.16);
    border-color: rgba(129,140,248,0.35);
    color: #e0e7ff;
    font-weight: 700;
}
.works-pagination {
    margin-top: auto;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}
.works-page-num { font-size: 12px; color: rgba(255,255,255,0.78); }
.works-empty-inline {
    min-height: 250px;
    display: grid;
    place-items: center;
    color: rgba(255,255,255,0.72);
    font-size: 13px;
}

/* 模型价格卡片布局：两列 + 分组 */
.model-price-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 10px;
    align-items: start;
}
.model-price-group {
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 12px;
    background: rgba(255,255,255,0.04);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}
.model-price-group-title {
    padding: 10px 12px;
    font-size: 13px;
    font-weight: 800;
    color: #e0e7ff;
    background: rgba(99,102,241,0.16);
    border-bottom: 1px solid rgba(129,140,248,0.3);
}
.model-price-list {
    display: grid;
    gap: 6px;
    padding: 8px;
}
.model-price-item {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 8px;
    align-items: center;
    padding: 8px 10px;
    border-radius: 8px;
    border: 1px solid rgba(255,255,255,0.08);
    background: rgba(255,255,255,0.03);
}
.model-price-name {
    font-size: 12px;
    color: #f3f4f6;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.model-price-val {
    font-size: 12px;
    font-weight: 800;
    color: #fef3c7;
}
.model-price-empty {
    padding: 18px 8px;
    text-align: center;
    color: rgba(255,255,255,0.66);
    font-size: 12px;
}

.works-page {
    width: min(1200px, calc(100vw - 40px));
    margin: 16px auto;
    color: #eef2ff;
}

.works-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.works-head h2 {
    font-size: 20px;
    margin: 0;
}

.works-empty-card {
    background: linear-gradient(180deg, rgba(72, 73, 82, 0.78), rgba(58, 59, 67, 0.72));
    border: 1px solid rgba(255,255,255,0.14);
    border-radius: 16px;
    min-height: 260px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 20px;
    text-align: center;
}

.works-empty-title {
    font-size: 18px;
    font-weight: 800;
    margin: 0;
}

.works-empty-desc {
    font-size: 13px;
    color: rgba(255,255,255,0.72);
    margin: 0;
}

.works-cta {
    margin-top: 8px;
    min-width: 120px;
}

@media (min-width: 1920px) {
    /* 27寸等大屏：用户卡内部空间均分，消除底部空白 */
    .profile-left-main .profile-user-card {
        padding: 14px 12px;
        display: grid;
        grid-template-rows: auto auto 1fr auto;
        row-gap: 14px;
        align-content: stretch;
    }
    .profile-left-main .profile-user-card .profile-vip {
        margin-top: 0;
    }
    .profile-left-main .profile-user-card .profile-metrics {
        margin-top: 0;
        align-self: stretch;
    }
    .profile-left-main .profile-user-card .profile-metric {
        min-height: 64px;
    }
    .profile-left-main .profile-user-card .profile-quick-actions {
        margin-top: 0;
        align-self: end;
    }
    .profile-left-main .profile-user-card .profile-btn {
        height: 32px;
        font-size: 11px;
    }
}

@media (max-width: 980px) {
    .profile-page {
        width: min(1320px, calc(100vw - 20px));
        min-height: auto;
        margin: 8px auto 12px;
    }
    .profile-grid {
        grid-template-columns: 1fr;
        gap: 12px;
        min-height: auto;
    }

    .profile-left-main {
        grid-template-rows: auto;
        height: auto;
    }

    .profile-user-card {
        display: grid;
        grid-template-rows: auto auto auto auto;
        row-gap: 10px;
        padding: 12px;
    }

    .profile-user-card .profile-user-top {
        gap: 10px;
    }

    .profile-user-card .profile-avatar {
        width: 40px;
        height: 40px;
        font-size: 16px;
    }

    .profile-user-card .profile-name {
        font-size: 14px;
    }

    .profile-user-card .profile-email {
        font-size: 10px;
    }

    .profile-user-card .profile-vip {
        margin-top: 0;
        font-size: 10px;
        padding: 4px 8px;
    }

    .profile-user-card .profile-metrics {
        margin-top: 0;
        gap: 6px;
    }

    .profile-user-card .profile-metric {
        min-height: 52px;
        padding: 5px 4px;
    }

    .profile-user-card .metric-num {
        font-size: 12px;
    }

    .profile-user-card .metric-lbl {
        font-size: 9px;
    }

    .profile-user-card .profile-quick-actions {
        margin-top: 0;
        gap: 6px;
    }

    .profile-user-card .profile-btn {
        height: 30px;
        font-size: 10px;
    }

    .info-grid { grid-template-columns: 1fr; }
    .timeline li { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
    .profile-page {
        width: calc(100vw - 14px);
        margin: 6px auto 10px;
    }

    .profile-user-card {
        padding: 10px;
        row-gap: 8px;
    }

    .profile-user-card .profile-metrics,
    .profile-user-card .profile-quick-actions {
        gap: 5px;
    }

    .profile-user-card .profile-btn {
        height: 28px;
        font-size: 9px;
    }

    .profile-section {
        padding: 7px 8px;
    }
}

/* 4K显示器优化 (3840x2160) */
@media (min-width: 3840px) {
    /* Hero Section */
    .hero-section {
        padding: 7vh 2vw 5vh 2vw;
    }

    .hero-content {
        gap: 24px;
    }

    .hero-title { 
        font-size: 5rem;
        margin-bottom: 1.2vh;
    }
    
    .hero-title .accent {
        margin-top: 1vh;
    }
    
    .hero-subtitle { 
        font-size: 1.55rem;
        margin-bottom: 1.2vh;
    }
    
    /* Buttons */
    .hero-buttons {
        gap: 20px;
        margin-top: 24px;
        margin-bottom: 20px;
    }

    .btn { 
        font-size: 1.4rem;
        padding: 1.6vh 5vw;
    }
    
    /* Hint */
    .hero-hint { 
        font-size: 1.15rem;
        gap: 10px;
        margin-bottom: 36px;
        padding: 18px 30px;
    }
    
    .hint-icon {
        font-size: 1.2em;
    }
    
    /* Cards */
    .feature-icon { 
        font-size: 3.6rem; 
        margin-bottom: 14px; 
    }
    
    .feature-card { 
        padding: 30px 26px;
    }
    
    .feature-card h3 { 
        font-size: 1.5rem; 
        margin: 10px 0 8px 0; 
    }
    
    .feature-card p { 
        font-size: 1.2rem; 
    }
    
    .features-grid {
        gap: 28px;
        margin-bottom: 24px;
    }
    
    /* Navigation */
    .navbar .container {
        padding: 1.2vh 30px;
        gap: 2.8rem;
    }
    
    .logo { 
        font-size: 2rem; 
    }
    
    .nav-links {
        gap: 4rem;
    }
    
    .nav-link { 
        font-size: 1.25rem;
        padding: 0.7vh 0;
    }
    
    .icon-btn {
        padding: 0.8vh 1.6vw;
    }
    
    .icon-btn svg {
        width: 24px;
        height: 24px;
    }
    
    /* Footer */
    .footer {
        padding: 1.8vh 0;
    }
    
    .footer-text { 
        font-size: 1.1rem; 
    }
    
    .container { 
        max-width: 1800px; 
    }
}