:root {
    color-scheme: light;
    --bg: #f4f1ea;
    --card: #fffaf3;
    --line: #e7dcc8;
    --ink: #1c1917;
    --muted: #78716c;
    --accent: #9a3412;
    --ok: #166534;
    --ok-bg: #ecfdf3;
    --err: #9f1239;
    --err-bg: #fff1f2;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    min-height: 100vh;
    font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    background: var(--bg);
    color: var(--ink);
}

a { color: var(--accent); }

.top, main, footer {
    width: min(880px, calc(100% - 32px));
    margin: 0 auto;
}

.top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    padding: 22px 0 8px;
}

.brand {
    color: var(--ink);
    font-weight: 700;
    text-decoration: none;
}

nav {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-wrap: wrap;
}

nav a { text-decoration: none; }

main { padding: 18px 0 28px; }

.card {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 16px;
    padding: 32px;
}

.card.narrow { max-width: 460px; }

.kicker {
    margin: 0 0 8px;
    color: var(--accent);
    letter-spacing: .08em;
    font-size: 12px;
}

h1 { margin: 0 0 12px; font-size: 28px; font-weight: 650; }
h2 { margin: 28px 0 12px; font-size: 18px; }
p { line-height: 1.7; color: #44403c; }

.note, .links, footer p { color: var(--muted); font-size: 14px; }
.links { display: flex; gap: 16px; }
footer { padding-bottom: 36px; }

.actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 18px; }

.button, button {
    appearance: none;
    border: 0;
    background: var(--accent);
    color: #fffaf3;
    border-radius: 999px;
    padding: 10px 18px;
    text-decoration: none;
    cursor: pointer;
    font: inherit;
}

.button.ghost, nav button {
    background: transparent;
    color: var(--accent);
    border: 1px solid var(--line);
}

form { display: grid; gap: 14px; }
label { display: grid; gap: 6px; font-size: 14px; }
label.check { display: flex; align-items: center; gap: 8px; }
input[type="text"], input[type="email"], input[type="password"], input[type="url"] {
    width: 100%;
    border: 1px solid var(--line);
    background: #fff;
    border-radius: 10px;
    padding: 10px 12px;
    font: inherit;
    color: var(--ink);
}
.inline { display: inline; }
.inline button { padding: 4px 10px; }

.alert {
    margin: 0 0 14px;
    border-radius: 12px;
    padding: 10px 14px;
}
.alert.error { background: var(--err-bg); color: var(--err); }
.alert.ok { background: var(--ok-bg); color: var(--ok); }

.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 12px;
    margin: 18px 0;
}
.stats div {
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 12px;
}
.stats dt { color: var(--muted); font-size: 13px; }
.stats dd { margin: 6px 0 0; font-weight: 650; }

.avatar {
    width: 64px;
    height: 64px;
    object-fit: cover;
    border-radius: 50%;
    border: 1px solid var(--line);
}

textarea, select, input[type="number"] {
    width: 100%;
    border: 1px solid var(--line);
    background: #fff;
    border-radius: 10px;
    padding: 10px 12px;
    font: inherit;
    color: var(--ink);
}

textarea { min-height: 100px; resize: vertical; }

table.data {
    width: 100%;
    border-collapse: collapse;
    margin: 16px 0;
    font-size: 14px;
}
table.data th, table.data td {
    border-bottom: 1px solid var(--line);
    padding: 10px 8px;
    text-align: left;
    vertical-align: top;
}
table.data th { color: var(--muted); font-weight: 600; }

.button.disabled, button:disabled {
    opacity: .45;
    cursor: not-allowed;
}

.feature-list { padding-left: 1.2em; color: #44403c; }
.feature-list li { margin: 8px 0; }

.ann-list { list-style: none; padding: 0; margin: 0; }
.ann-list li { border-top: 1px solid var(--line); padding: 14px 0; }
.ann-item { border-top: 1px solid var(--line); padding: 18px 0; }
.ann-item:first-of-type { border-top: 0; }
.tag {
    font-size: 12px;
    color: var(--accent);
    border: 1px solid var(--line);
    border-radius: 6px;
    padding: 2px 6px;
}

.msg-list { list-style: none; padding: 0; margin: 0; }
.msg-list li { border: 1px solid var(--line); border-radius: 12px; padding: 12px; margin-bottom: 10px; }
.msg-list li.unread { background: #fff; }
.msg-list li.read { opacity: .85; }

.danger-zone { margin-top: 20px; padding-top: 16px; border-top: 1px dashed var(--line); }

form.stack { max-width: 520px; }

@media (max-width: 640px) {
    .top { align-items: flex-start; flex-direction: column; }
    .card { padding: 22px 18px; }
    h1 { font-size: 24px; }
}