* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

body {
    min-height: 100vh;
    background: linear-gradient(145deg, #f5f9ff 0%, #e9f0fa 100%);
    font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

body::before {
    content: '';
    position: fixed;
    width: 80vmax;
    height: 80vmax;
    background: radial-gradient(circle, rgba(26,144,255,0.03) 0%, rgba(26,144,255,0) 70%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 0;
    pointer-events: none;
}

body::after {
    content: '';
    position: fixed;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 200 200" opacity="0.1"><path fill="none" stroke="%231a90ff" stroke-width="0.5" d="M60 40 L140 40 M40 80 L160 80 M50 120 L150 120 M70 160 L130 160 M100 20 L100 180 M30 60 L170 60 M45 100 L155 100 M65 140 L135 140 M90 180 L110 20"/><circle cx="100" cy="100" r="30" stroke="%231a90ff" fill="none" stroke-width="0.8"/><circle cx="100" cy="100" r="50" stroke="%231a90ff" fill="none" stroke-width="0.4"/></svg>') repeat;
    pointer-events: none;
    z-index: 0;
}

.card {
    max-width: 680px;
    width: 100%;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(2px);
    box-shadow: 0 25px 45px -12px rgba(0, 0, 0, 0.2), 0 2px 6px rgba(0,0,0,0.02), inset 0 1px 0 rgba(255,255,255,0.8);
    padding: 2.4rem 2rem 2.8rem;
    transition: all 0.3s ease;
    border: 1px solid rgba(255,255,255,0.6);
    position: relative;
    z-index: 10;
}

@media (max-width: 560px) {
    .card {
        padding: 1.8rem 1.4rem 2.2rem;
    }
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    justify-content: space-between;
    border-bottom: 1px solid rgba(26,144,255,0.2);
    padding-bottom: 0.9rem;
}
.logo-area {
    display: flex;
    align-items: center;
    gap: 12px;
}
.logo {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, #1a90ff 0%, #3ea6ff 100%);
    border-radius: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 14px -8px rgba(26,144,255,0.4);
}
.logo svg {
    width: 26px;
    height: 26px;
    stroke: white;
    stroke-width: 1.8;
    fill: none;
}
.brand-text {
    font-weight: 700;
    font-size: 1.35rem;
    letter-spacing: -0.3px;
    background: linear-gradient(120deg, #0a2540, #1a90ff);
    background-clip: text;
    -webkit-background-clip: text;
    color: transparent;
}
.badge {
    background: rgba(26,144,255,0.12);
    padding: 6px 14px;
    border-radius: 60px;
    font-size: 0.75rem;
    font-weight: 500;
    color: #1a6bc0;
    backdrop-filter: blur(2px);
    border: 0.5px solid rgba(26,144,255,0.2);
}

.section-title {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    font-weight: 600;
    color: #4d6a8f;
    margin: 1.4rem 0 0.9rem 0;
    display: flex;
    align-items: center;
    gap: 8px;
}
.section-title:first-of-type {
    margin-top: 0.2rem;
}
.section-title span {
    background: #eef3fc;
    padding: 4px 10px;
    border-radius: 30px;
    font-size: 0.9rem;
}

.domain-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 12px;
}
.domain-item {
    display: block;
    text-decoration: none;
    width: 100%;
    background: rgba(255,255,255,0.8);
    backdrop-filter: blur(2px);
    border: 1px solid #e2edff;
    border-radius: 80px;
    padding: 8px 20px;
    font-size: 1.25rem;
    font-weight: 500;
    font-family: 'SF Mono', 'Fira Code', monospace;
    transition: all 0.2s;
    box-shadow: 0 1px 2px rgba(0,0,0,0.02);
    color: #0d2f4f;
    cursor: pointer;
}
.domain-item strong {
    font-weight: 600;
    color: #1a6bc0;
}
.domain-item b { color: #00f; }
.domain-item .domain-highlight {
    color: #d93c2f;
    font-weight: 600;
    letter-spacing: 0.3px;
    font-size: 1.35rem;
}
.domain-item:hover {
    border-color: #1a90ff;
    background: white;
    transform: translateY(-1px);
    box-shadow: 0 8px 18px -12px rgba(26,144,255,0.3);
}

.inline-list {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: baseline;
}

.footnote {
    font-size: 0.75rem;
    text-align: center;
    margin-top: 2rem;
    color: #6c86a3;
    border-top: 1px solid rgba(0,0,0,0.05);
    padding-top: 1.5rem;
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.tip-icon {
    font-size: 0.9rem;
    background: #eef2f9;
    padding: 4px 10px;
    border-radius: 50px;
    display: inline-flex;
    align-items: center;
    gap: 5px;
}
.red-text { color: #e04f3f; }
.blue-text { color: #1a90ff; }

.jump-hint {
    text-align: center;
    font-size: 0.7rem;
    margin-top: 12px;
    padding: 5px 12px;
    background: #eef3fc80;
    border-radius: 60px;
    display: inline-block;
    width: auto;
    color: #2c7ab1;
}
.hint-container {
    display: flex;
    justify-content: center;
    margin-top: 10px;
}
.dynamic-toast-msg {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    background-color: #1f2f3ecc;
    backdrop-filter: blur(16px);
    color: white;
    padding: 10px 22px;
    border-radius: 60px;
    font-size: 0.85rem;
    font-weight: 500;
    z-index: 9999;
    font-family: system-ui, monospace;
    box-shadow: 0 8px 18px rgba(0,0,0,0.2);
    border: 1px solid rgba(255,255,255,0.2);
    text-align: center;
    white-space: nowrap;
    max-width: 90vw;
    white-space: normal;
    word-break: break-word;
    pointer-events: none;
}

.card-note {
    text-align: center;
    margin-top: 0.8rem;
    font-size: 0.7rem;
    color: #8ba0bc;
}