:root {
    --bg: #f6f4ef;
    --panel: #ffffff;
    --ink: #1d1b16;
    --muted: #6b6558;
    --line: #e4ddd0;
    --accent: #1f6b4a;
    --accent-ink: #ffffff;
    --danger: #b42318;
    --ok: #17663a;
    --sans: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.55 var(--sans); }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.nav {
    display: flex; align-items: center; gap: 28px;
    padding: 16px 28px; background: var(--panel);
    border-bottom: 1px solid var(--line);
}
.brand { font-weight: 700; color: var(--ink); letter-spacing: 0.02em; }
.brand span { color: var(--muted); font-weight: 500; margin-left: 6px; }
.nav nav { display: flex; gap: 18px; }
.nav nav a { color: var(--muted); }
.nav nav a.on, .nav nav a:hover { color: var(--ink); text-decoration: none; }
.who { margin-left: auto; display: flex; align-items: center; gap: 12px; color: var(--muted); }

.wrap { max-width: 880px; margin: 0 auto; padding: 40px 24px 72px; }
.foot {
    max-width: 880px; margin: 0 auto; padding: 0 24px 40px;
    color: var(--muted); font-size: 13px; display: flex; gap: 16px;
}

.hero { padding: 48px 0 24px; }
.eyebrow { color: var(--accent); font-size: 13px; letter-spacing: 0.08em; text-transform: uppercase; margin: 0 0 8px; }
.hero h1 { font-size: 48px; line-height: 1.1; margin: 0 0 12px; }
.lead { color: var(--muted); max-width: 36em; margin: 0 0 28px; }
.cta { display: flex; gap: 12px; flex-wrap: wrap; }

.block { margin-top: 40px; }
.block-head { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; }
h1 { font-size: 28px; margin: 0 0 12px; }
h2 { font-size: 18px; margin: 24px 0 12px; }

.card {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 22px;
}
.form-card { max-width: 440px; }
.form-card label, .card label { display: block; margin-bottom: 12px; color: var(--muted); font-size: 13px; }
.form-card input, .form-card textarea, .form-card select, .card input, .card textarea, .card select {
    display: block; width: 100%; margin-top: 4px;
    border: 1px solid var(--line); border-radius: 8px;
    padding: 9px 10px; font: inherit; color: var(--ink); background: #fff;
}
.btn, button.btn {
    display: inline-block; border: 0; border-radius: 8px;
    background: var(--accent); color: var(--accent-ink); font-weight: 650;
    padding: 10px 16px; cursor: pointer; text-decoration: none;
}
.btn:hover { text-decoration: none; filter: brightness(1.05); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-ghost { background: transparent; color: var(--ink); border: 1px solid var(--line); }
.btn-lg { padding: 12px 20px; font-size: 16px; }
.btn-sm { padding: 6px 12px; font-size: 13px; }

.muted { color: var(--muted); }
.error { color: var(--danger); }
.ok { color: var(--ok); }
.banner { background: #fff6d8; border: 1px solid #ead48a; border-radius: 8px; padding: 10px 12px; }

.news-list { list-style: none; padding: 0; margin: 0; }
.news-list li { border-bottom: 1px solid var(--line); }
.news-list a { display: flex; gap: 16px; padding: 12px 0; color: inherit; }
.news-list time { color: var(--muted); width: 110px; flex: none; }
.article-body p { margin: 0 0 12px; }
.article-body h2, .article-body h3 { margin: 20px 0 8px; }

.dl-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin: 20px 0; }
.hash { font-size: 12px; color: var(--muted); word-break: break-all; }

.tiers { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 16px; }
.tier { display: flex; gap: 10px; align-items: center; border: 1px solid var(--line); border-radius: 8px; padding: 10px 12px; margin: 0; }
.tier strong { display: block; color: var(--ink); }
.tier small { color: var(--muted); }

.zone-switch { display: flex; align-items: center; }
.zone-switch label { display: flex; align-items: center; gap: 8px; margin: 0; color: var(--muted); font-size: 13px; }
.zone-switch select { margin: 0; width: auto; min-width: 140px; }

.admin-body { display: flex; min-height: 100vh; background: #eef1f4; }
.admin-side {
    width: 232px; flex: none; background: #15202b; color: #d7e0e8;
    display: flex; flex-direction: column; padding: 20px 16px;
}
.admin-brand { color: #fff; font-weight: 700; margin-bottom: 24px; }
.admin-brand:hover { color: #fff; text-decoration: none; }
.admin-nav { display: flex; flex-direction: column; gap: 4px; }
.admin-nav a { color: #9fb0be; padding: 8px 10px; border-radius: 8px; }
.admin-nav a.on, .admin-nav a:hover { background: #1f3140; color: #fff; text-decoration: none; }
.admin-side-foot { margin-top: auto; padding-top: 20px; display: flex; align-items: center; justify-content: space-between; gap: 8px; color: #9fb0be; font-size: 13px; }
.admin-main { flex: 1; min-width: 0; }
.admin-top { display: flex; align-items: baseline; justify-content: space-between; padding: 20px 28px 0; }
.admin-top h1 { margin: 0; font-size: 22px; }
.admin-content { padding: 20px 28px 48px; }
.admin-cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-bottom: 20px; }
.admin-cards .card { text-decoration: none; color: inherit; }
.admin-cards .card strong { display: block; font-size: 28px; margin-bottom: 4px; }
.check { display: flex; align-items: center; gap: 8px; }
.check input { width: auto; margin: 0; }

@media (max-width: 720px) {
    .nav { flex-wrap: wrap; gap: 12px; }
    .who { margin-left: 0; width: 100%; }
    .hero h1 { font-size: 36px; }
    .dl-grid, .tiers { grid-template-columns: 1fr; }
    .form-card { max-width: none; }
    .admin-body { flex-direction: column; }
    .admin-side { width: auto; }
    .admin-cards { grid-template-columns: 1fr 1fr; }
    .zone-switch { width: 100%; }
}