* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", Arial, sans-serif;
    color: #172033;
    background: #f5f7fb;
}
a { color: #1769e0; text-decoration: none; }
a:hover { text-decoration: underline; }
.topbar {
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 32px;
    background: #ffffff;
    border-bottom: 1px solid #e7ebf3;
}
.brand { color: #13213c; font-size: 20px; font-weight: 800; }
.topbar nav { display: flex; gap: 18px; align-items: center; }
.page { width: min(1180px, calc(100% - 32px)); margin: 28px auto 56px; }
.footer { color: #7b8496; text-align: center; padding: 24px; }
.hero {
    display: grid;
    gap: 18px;
    align-items: center;
    min-height: 360px;
    padding: 46px;
    color: #ffffff;
    background:
        linear-gradient(120deg, rgba(16, 33, 66, .94), rgba(21, 82, 113, .88)),
        url("https://images.unsplash.com/photo-1558494949-ef010cbdcc31?auto=format&fit=crop&w=1600&q=80") center/cover;
    border-radius: 8px;
}
.hero h1 { margin: 0; font-size: clamp(34px, 5vw, 58px); letter-spacing: 0; }
.hero p { margin: 0; max-width: 680px; font-size: 18px; line-height: 1.8; }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.panel, .card {
    background: #ffffff;
    border: 1px solid #e6ebf2;
    border-radius: 8px;
    padding: 22px;
    box-shadow: 0 8px 26px rgba(34, 48, 80, .06);
}
.panel h1, .panel h2, .card h2 { margin: 0 0 18px; font-size: 22px; }
.muted { color: #737f92; }
.form { display: grid; gap: 14px; max-width: 520px; }
.form.wide { max-width: 100%; }
label { display: grid; gap: 7px; font-weight: 700; }
input, select {
    width: 100%;
    min-height: 42px;
    padding: 9px 12px;
    border: 1px solid #ccd5e3;
    border-radius: 6px;
    background: #ffffff;
    color: #152238;
}
.copy-link {
    width: min(280px, 45vw);
    min-height: 40px;
    font-size: 13px;
    color: #4b5870;
    background: #f8fafc;
}
.actions { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.btn, button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 40px;
    padding: 0 16px;
    border: 1px solid #1464d8;
    border-radius: 6px;
    background: #1769e0;
    color: #ffffff;
    font-weight: 800;
    cursor: pointer;
}
.btn.secondary { color: #1769e0; background: #eef5ff; border-color: #bcd6ff; }
.btn.danger { background: #cf2e36; border-color: #cf2e36; }
.btn:hover, button:hover { text-decoration: none; filter: brightness(.97); }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; background: #ffffff; border-radius: 8px; overflow: hidden; }
th, td { padding: 12px 14px; border-bottom: 1px solid #edf1f6; text-align: left; vertical-align: middle; }
th { color: #5f6c80; font-size: 13px; background: #f9fbfe; }
.flash { padding: 12px 14px; margin-bottom: 16px; border-radius: 6px; background: #eef5ff; border: 1px solid #cfe2ff; }
.flash.error { background: #fff0f0; border-color: #ffd1d1; color: #9b1c22; }
.flash.success { background: #edfff5; border-color: #c4f0d7; color: #10613a; }
.badge { display: inline-flex; padding: 4px 8px; border-radius: 999px; background: #eef2f7; color: #536074; font-size: 12px; font-weight: 800; }
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 18px; }
.stat { background: #fff; border: 1px solid #e6ebf2; border-radius: 8px; padding: 18px; }
.stat strong { display: block; font-size: 26px; margin-top: 6px; }
@media (max-width: 800px) {
    .topbar { padding: 0 16px; }
    .topbar nav { gap: 10px; font-size: 14px; }
    .hero { padding: 28px; }
    .grid, .stats { grid-template-columns: 1fr; }
}