:root {
    --bg: #f4f7fb;
    --card: #ffffff;
    --ink: #1b2430;
    --muted: #667385;
    --line: #e4ebf3;
    --blue: #1a73e8;
    --blue-dark: #1259b8;
    --blue-soft: #e8f1fd;
    --ok: #18794e;
    --ok-soft: #e7f6ee;
    --bad: #c24141;
    --bad-soft: #fdecec;
    --shadow: 0 12px 32px rgba(23, 63, 112, 0.06);
    --radius: 16px;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; padding: 0; }
body {
    font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    color: var(--ink);
    background: var(--bg);
    font-size: 15px;
    line-height: 1.6;
}
a { color: var(--blue); text-decoration: none; }
button, input, textarea { font: inherit; color: inherit; }
h1, h2, p { margin: 0; }

.logo {
    width: 28px;
    height: 28px;
    border-radius: 8px;
    background:
        linear-gradient(var(--card), var(--card)) center / 14px 2px no-repeat,
        linear-gradient(var(--card), var(--card)) center / 2px 14px no-repeat,
        var(--blue);
    flex: 0 0 auto;
}
.admin .logo, .gate .logo { background:
    radial-gradient(circle at 50% 50%, #fff 0 3px, transparent 4px),
    var(--blue);
}

.wrap { width: min(980px, calc(100% - 32px)); margin: 0 auto; padding: 36px 0 48px; }
.top { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 22px; }
.brand { display: flex; align-items: center; gap: 12px; }
.brand h1 { font-size: 22px; font-weight: 600; letter-spacing: -0.02em; }
.sub, .hint, .host, .note, .status, .foot { color: var(--muted); }
.sub { margin-top: 2px; }
.notice {
    background: var(--blue-soft);
    color: #18498a;
    border-radius: 12px;
    padding: 12px 14px;
    margin-bottom: 16px;
}
.status { margin: 4px 0 16px; font-size: 14px; }
.foot { margin-top: 22px; font-size: 13px; }

.hero {
    background: linear-gradient(180deg, #1a73e8 0%, #2b82f0 100%);
    color: #fff;
    border-radius: 20px;
    padding: 22px 24px;
    margin-bottom: 18px;
    box-shadow: 0 16px 30px rgba(26, 115, 232, 0.18);
}
.hero-kicker { font-size: 13px; opacity: 0.88; }
.hero-row { display: flex; justify-content: space-between; align-items: flex-end; gap: 16px; margin-top: 8px; }
.hero h2 { font-size: 30px; letter-spacing: -0.03em; }
.hero-meta { margin-top: 4px; opacity: 0.92; }
.hero-meta .dot { margin: 0 6px; }
.count { margin-top: 8px; font-size: 13px; opacity: 0.9; }
.hero-actions { display: flex; gap: 8px; align-items: center; }

.grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.card, .panel, .stat, .gate-card {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}
.card { padding: 16px 16px 14px; }
.card.is-best { border-color: #b9d4fa; box-shadow: 0 10px 24px rgba(26, 115, 232, 0.1); }
.card.is-down { opacity: 0.72; }
.card-top, .card-foot, .panel-head, .side-foot { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.card h2 { font-size: 17px; }
.card-foot { margin-top: 14px; }
.note { margin-top: 8px; font-size: 13px; }
.latency, .pill {
    font-size: 13px;
    padding: 2px 8px;
    border-radius: 999px;
    background: var(--blue-soft);
    color: var(--blue-dark);
    white-space: nowrap;
}
.latency.wait { background: #eef2f6; color: var(--muted); }
.latency.down, .pill.down { background: var(--bad-soft); color: var(--bad); }
.latency.ok, .pill.ok { background: var(--ok-soft); color: var(--ok); }

.btn, button.link {
    border: 0;
    cursor: pointer;
    border-radius: 10px;
    padding: 8px 14px;
    background: var(--blue);
    color: #fff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}
.btn:hover { background: var(--blue-dark); }
.btn.ghost { background: #fff; color: var(--blue); border: 1px solid #c9ddf8; }
.btn.ghost:hover { background: var(--blue-soft); }
.btn.light { background: #fff; color: var(--blue-dark); }
.btn.light:hover { background: #f3f8ff; }
.btn.ghost-light { background: transparent; color: #fff; border: 1px solid rgba(255,255,255,.45); }
.btn.ghost-light:hover { background: rgba(255,255,255,.12); }
button.link { background: transparent; color: var(--bad); padding: 0; }

.empty { padding: 28px 8px; text-align: center; color: var(--muted); }
.msg { border-radius: 12px; padding: 10px 12px; margin-bottom: 14px; }
.msg.ok { background: var(--ok-soft); color: var(--ok); }
.msg.err { background: var(--bad-soft); color: var(--bad); }

.gate { min-height: 100vh; display: grid; place-items: center; padding: 24px; }
.gate-card { width: min(440px, 100%); padding: 28px 26px 24px; }
.gate-card h1 { font-size: 22px; }
.lead { color: var(--muted); margin: 10px 0 18px; }
.form { display: grid; gap: 12px; }
.form label { display: grid; gap: 6px; font-size: 13px; color: var(--muted); }
.form input, .form textarea, .search input {
    width: 100%;
    border: 1px solid var(--line);
    background: #fff;
    border-radius: 10px;
    padding: 10px 12px;
    outline: none;
}
.form input:focus, .form textarea:focus, .search input:focus { border-color: #9ec2f5; box-shadow: 0 0 0 3px rgba(26,115,232,.12); }
.form .btn { margin-top: 4px; min-height: 42px; }
.check { display: flex !important; align-items: center; gap: 8px; color: var(--ink) !important; font-size: 14px !important; }
.check input { width: auto; }
.hint { margin-top: 14px; font-size: 13px; }

.shell { min-height: 100vh; display: grid; grid-template-columns: 220px 1fr; }
.side {
    background: #fff;
    border-right: 1px solid var(--line);
    padding: 18px 14px;
    display: flex;
    flex-direction: column;
    position: sticky;
    top: 0;
    height: 100vh;
}
.side-brand { display: flex; align-items: center; gap: 10px; color: var(--ink); font-weight: 600; padding: 4px 8px 16px; }
.side-nav { display: grid; gap: 4px; }
.side-nav a { color: var(--ink); padding: 9px 12px; border-radius: 10px; }
.side-nav a.active, .side-nav a:hover { background: var(--blue-soft); color: var(--blue-dark); }
.side-foot { margin-top: auto; display: grid; gap: 6px; padding: 12px 8px 0; font-size: 13px; color: var(--muted); }
.main-top { padding: 22px 28px 0; }
.main-top h1 { font-size: 22px; }
.content { padding: 18px 28px 40px; }
.cards { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; margin-bottom: 14px; }
.stat { padding: 16px; }
.stat span { color: var(--muted); font-size: 13px; }
.stat strong { display: block; margin-top: 6px; font-size: 28px; letter-spacing: -0.03em; }
.stat strong.stat-sm { font-size: 16px; line-height: 1.4; font-weight: 600; }
.panel { padding: 16px 16px 12px; margin-bottom: 14px; }
.panel-head { margin-bottom: 12px; }
.panel-head h2, .form-panel h2 { font-size: 16px; }
.form-panel { padding: 18px; }
.grid-form { grid-template-columns: 1fr 1fr; }
.grid-form .check, .grid-form .form-actions { grid-column: 1 / -1; }
.form-actions { display: flex; gap: 8px; align-items: center; }
.split { display: grid; grid-template-columns: 1.2fr .8fr; gap: 14px; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--line); vertical-align: middle; }
th { color: var(--muted); font-weight: 600; font-size: 12px; }
td.url { max-width: 280px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ops { display: flex; gap: 12px; align-items: center; white-space: nowrap; }
.ops form { margin: 0; }
.tools, .search { display: flex; gap: 8px; align-items: center; }
.search input { width: 180px; }
.fastest { margin: 0 0 12px; padding: 12px 14px; border-radius: 12px; background: var(--blue-soft); color: #18498a; }
.bars { display: flex; align-items: flex-end; gap: 10px; min-height: 130px; padding: 8px 4px 0; }
.bar { flex: 1; display: flex; flex-direction: column; align-items: center; gap: 6px; color: var(--muted); font-size: 12px; }
.bar i { display: block; width: 100%; max-width: 36px; min-height: 4px; border-radius: 8px 8px 4px 4px; background: var(--blue); }
.pager { display: flex; gap: 6px; padding: 12px 0 4px; }
.pager a, .pager span { min-width: 32px; text-align: center; padding: 4px 8px; border-radius: 8px; }
.pager span { background: var(--blue); color: #fff; }
tr.is-fast { background: #f4f9ff; }
td.state.ok { color: var(--ok); font-weight: 600; }
td.state.down { color: var(--bad); font-weight: 600; }

@media (max-width: 900px) {
    .shell { grid-template-columns: 1fr; }
    .side { position: static; height: auto; border-right: 0; border-bottom: 1px solid var(--line); }
    .side-nav { grid-auto-flow: column; overflow-x: auto; }
    .side-foot { margin-top: 12px; grid-auto-flow: column; }
    .cards, .grid, .split, .grid-form { grid-template-columns: 1fr; }
    .content, .main-top { padding-left: 16px; padding-right: 16px; }
    .hero-row, .top { flex-direction: column; align-items: flex-start; }
}