:root {
    --bg: #f4f7fb;
    --surface: #ffffff;
    --surface-soft: #f8fafc;
    --text: #152238;
    --muted: #6b7280;
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary: #0f766e;
    --danger: #dc2626;
    --success: #15803d;
    --border: #e5e7eb;
    --shadow: 0 18px 55px rgba(15, 23, 42, 0.10);
    --radius-xl: 26px;
    --radius-lg: 18px;
    --radius-md: 12px;
}

* {
    box-sizing: border-box;
}

html {
    min-height: 100%;
    background: var(--bg);
}

body {
    min-height: 100%;
    margin: 0;
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
    background:
        radial-gradient(circle at top left, rgba(37, 99, 235, 0.14), transparent 32rem),
        radial-gradient(circle at top right, rgba(15, 118, 110, 0.12), transparent 32rem),
        var(--bg);
}

a {
    color: var(--primary);
    text-decoration: none;
    word-break: break-all;
}

a:hover {
    text-decoration: underline;
}

button,
input {
    font: inherit;
}

.login-body {
    display: grid;
    place-items: center;
    padding: 24px;
}

.login-shell {
    width: min(440px, 100%);
}

.login-card {
    padding: 42px;
    border: 1px solid rgba(255, 255, 255, 0.70);
    border-radius: var(--radius-xl);
    background: rgba(255, 255, 255, 0.86);
    box-shadow: var(--shadow);
    backdrop-filter: blur(18px);
}

.brand-mark,
.brand-logo {
    display: inline-grid;
    place-items: center;
    color: #fff;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    box-shadow: 0 10px 30px rgba(37, 99, 235, 0.28);
}

.brand-mark {
    width: 58px;
    height: 58px;
    border-radius: 18px;
    margin-bottom: 18px;
    font-size: 28px;
    font-weight: 900;
}

.brand-logo {
    width: 38px;
    height: 38px;
    border-radius: 12px;
    font-weight: 900;
}

.login-card h1,
.hero h1,
.page-heading h1 {
    margin: 0 0 12px;
    letter-spacing: -0.03em;
}

.login-card p,
.hero-text,
.page-heading p,
.field-help,
.muted {
    color: var(--muted);
}

.stack {
    display: grid;
    gap: 12px;
}

.topbar {
    position: sticky;
    top: 0;
    z-index: 20;
    border-bottom: 1px solid rgba(229, 231, 235, 0.85);
    background: rgba(255, 255, 255, 0.82);
    backdrop-filter: blur(18px);
}

.topbar-inner {
    width: min(1180px, calc(100% - 32px));
    margin: 0 auto;
    min-height: 72px;
    display: flex;
    align-items: center;
    gap: 18px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    color: var(--text);
    font-weight: 800;
    white-space: nowrap;
}

.nav {
    display: flex;
    gap: 6px;
    margin-left: auto;
}

.nav-link {
    padding: 10px 14px;
    border-radius: 999px;
    color: var(--muted);
    font-weight: 700;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary);
    background: #eef4ff;
    text-decoration: none;
}

.logout-form {
    margin: 0;
}

.page {
    width: min(1180px, calc(100% - 32px));
    margin: 28px auto 48px;
}

.footer {
    width: min(1180px, calc(100% - 32px));
    margin: 0 auto 28px;
    color: var(--muted);
    display: flex;
    justify-content: space-between;
    gap: 16px;
    font-size: 14px;
}

.card-gradient,
.panel,
.stat-card,
.url-card {
    border: 1px solid rgba(229, 231, 235, 0.85);
    border-radius: var(--radius-xl);
    background: rgba(255, 255, 255, 0.88);
    box-shadow: var(--shadow);
}

.hero {
    display: flex;
    justify-content: space-between;
    gap: 24px;
    align-items: center;
    padding: 34px;
    overflow: hidden;
    background:
        linear-gradient(135deg, rgba(37, 99, 235, 0.12), rgba(15, 118, 110, 0.08)),
        rgba(255, 255, 255, 0.88);
}

.hero h1 {
    font-size: clamp(32px, 4vw, 56px);
}

.hero-text {
    max-width: 700px;
    line-height: 1.8;
}

.hero-actions,
.form-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.eyebrow {
    margin: 0 0 8px;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 0.14em;
    font-weight: 900;
    font-size: 12px;
}

.stats-grid,
.security-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin: 18px 0;
}

.stat-card {
    padding: 22px;
}

.stat-value {
    display: block;
    font-size: 30px;
    font-weight: 900;
}

.stat-label {
    color: var(--muted);
}

.grid-two {
    display: grid;
    grid-template-columns: minmax(0, 1.25fr) minmax(320px, 0.75fr);
    gap: 18px;
    margin: 18px 0;
}

.panel {
    padding: 24px;
}

.section-title {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 18px;
}

.section-title h2,
.security-card h2,
.address-section h3 {
    margin: 0;
}

.text-link {
    font-weight: 800;
}

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

.action-item {
    display: grid;
    gap: 6px;
    padding: 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background: var(--surface-soft);
}

.action-item strong {
    color: var(--text);
}

.action-item span {
    color: var(--muted);
    line-height: 1.6;
}

.action-item:hover {
    border-color: rgba(37, 99, 235, 0.45);
    text-decoration: none;
}

.address-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
}

.address-section {
    padding: 18px;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background: var(--surface-soft);
}

.link-list {
    display: grid;
    gap: 10px;
    margin-top: 14px;
}

.link-row {
    display: grid;
    grid-template-columns: 64px minmax(0, 1fr) auto;
    gap: 10px;
    align-items: center;
    padding: 10px 0;
    border-top: 1px dashed var(--border);
}

.table-wrap {
    width: 100%;
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 680px;
}

.data-table th,
.data-table td {
    padding: 14px 12px;
    border-bottom: 1px solid var(--border);
    text-align: left;
    vertical-align: top;
}

.data-table th {
    color: var(--muted);
    font-size: 13px;
    background: var(--surface-soft);
}

.url-cell {
    max-width: 420px;
    word-break: break-all;
}

.page-heading {
    margin-bottom: 20px;
}

.page-heading h1 {
    font-size: clamp(30px, 4vw, 48px);
}

.form-panel {
    display: grid;
    gap: 20px;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.url-card {
    padding: 18px;
    box-shadow: none;
    background: var(--surface-soft);
}

.url-card-head {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 16px;
}

.url-card-head p {
    margin: 6px 0 0;
    color: var(--muted);
    word-break: break-all;
}

.keyword-badge {
    padding: 6px 10px;
    border-radius: 999px;
    background: #e0f2fe;
    color: #0369a1;
    font-weight: 900;
    font-size: 12px;
}

.field-label {
    display: block;
    margin: 10px 0 8px;
    color: var(--text);
    font-weight: 800;
}

.input {
    width: 100%;
    padding: 13px 14px;
    border: 1px solid #d1d5db;
    border-radius: var(--radius-md);
    background: #fff;
    color: var(--text);
    outline: none;
    transition: border-color 0.18s, box-shadow 0.18s;
}

.input-lg {
    padding: 16px;
    font-size: 16px;
}

.input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.12);
}

.input-muted {
    color: var(--muted);
    background: #eef2f7;
}

.field-help {
    margin: 8px 0 0;
    font-size: 14px;
    line-height: 1.6;
}

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

.param-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--surface-soft);
}

code {
    padding: 4px 8px;
    border-radius: 8px;
    background: #eef2ff;
    color: #3730a3;
}

.btn,
.copy-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 0;
    border-radius: 999px;
    cursor: pointer;
    font-weight: 900;
    text-decoration: none;
    transition: transform 0.18s, box-shadow 0.18s, background 0.18s;
}

.btn {
    min-height: 42px;
    padding: 0 18px;
}

.btn:hover,
.copy-btn:hover {
    transform: translateY(-1px);
    text-decoration: none;
}

.btn:disabled {
    cursor: not-allowed;
    opacity: 0.55;
    transform: none;
}

.btn-primary {
    color: #fff;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    box-shadow: 0 14px 28px rgba(37, 99, 235, 0.26);
}

.btn-secondary {
    color: #fff;
    background: linear-gradient(135deg, var(--secondary), #115e59);
    box-shadow: 0 14px 28px rgba(15, 118, 110, 0.20);
}

.btn-light,
.copy-btn {
    color: var(--text);
    background: #eef2f7;
}

.copy-btn {
    min-height: 32px;
    padding: 0 12px;
    font-size: 13px;
}

.alert {
    padding: 14px 16px;
    border-radius: var(--radius-lg);
    margin: 0 0 16px;
    line-height: 1.6;
    border: 1px solid transparent;
}

.alert-success {
    color: #14532d;
    background: #dcfce7;
    border-color: #bbf7d0;
}

.alert-error {
    color: #7f1d1d;
    background: #fee2e2;
    border-color: #fecaca;
}

.alert-info {
    color: #1e3a8a;
    background: #dbeafe;
    border-color: #bfdbfe;
}

.check-list {
    margin: 14px 0 0;
    padding-left: 18px;
    line-height: 1.9;
    color: var(--muted);
}

.security-card {
    box-shadow: none;
}

@media (max-width: 900px) {
    .topbar-inner {
        flex-wrap: wrap;
        padding: 14px 0;
    }

    .nav {
        order: 3;
        width: 100%;
        overflow-x: auto;
        margin-left: 0;
        padding-bottom: 2px;
    }

    .hero,
    .grid-two,
    .footer {
        display: grid;
    }

    .grid-two,
    .stats-grid,
    .security-grid,
    .address-grid,
    .form-grid {
        grid-template-columns: 1fr;
    }

    .footer {
        justify-content: start;
    }
}

@media (max-width: 560px) {
    .page,
    .topbar-inner,
    .footer {
        width: min(100% - 20px, 1180px);
    }

    .hero,
    .panel,
    .login-card {
        padding: 22px;
        border-radius: 20px;
    }

    .link-row {
        grid-template-columns: 1fr;
        gap: 6px;
    }

    .hero-actions,
    .form-actions {
        display: grid;
    }

    .btn {
        width: 100%;
    }
}