:root {
    --bg: #f5f1e8;
    --surface: #fffaf2;
    --surface-strong: #ffffff;
    --text: #1f1a14;
    --muted: #786b5d;
    --accent: #c46a2f;
    --accent-dark: #8e4316;
    --line: #e7d8c6;
    --success: #166534;
    --error: #b42318;
    --shadow: 0 18px 40px rgba(90, 58, 31, 0.08);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    color: var(--text);
    background:
        radial-gradient(circle at top left, rgba(196, 106, 47, 0.15), transparent 30%),
        linear-gradient(180deg, #f2eadf 0%, #f8f5ef 100%);
}

a {
    color: inherit;
    text-decoration: none;
}

.container {
    width: min(1120px, calc(100% - 32px));
    margin: 0 auto;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    backdrop-filter: blur(10px);
    background: rgba(250, 243, 232, 0.86);
    border-bottom: 1px solid rgba(231, 216, 198, 0.9);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 72px;
    gap: 24px;
}

.brand {
    font-size: 22px;
    font-weight: 800;
    letter-spacing: 0.04em;
}

.nav {
    display: flex;
    gap: 18px;
    flex-wrap: wrap;
}

.nav a {
    color: var(--muted);
}

.page {
    padding: 32px 0 56px;
}

.hero,
.panel,
.card,
.stat-card {
    background: rgba(255, 255, 255, 0.8);
    border: 1px solid var(--line);
    border-radius: 24px;
    box-shadow: var(--shadow);
}

.hero,
.panel {
    padding: 28px;
}

.hero h1,
.panel h1,
.panel h2,
.card h2 {
    margin-top: 0;
}

.hero {
    margin-bottom: 24px;
}

.eyebrow {
    display: inline-block;
    margin-bottom: 12px;
    color: var(--accent-dark);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.grid,
.stats,
.split {
    display: grid;
    gap: 20px;
}

.cards {
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.stats {
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    margin-bottom: 24px;
}

.split {
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}

.card,
.stat-card {
    padding: 24px;
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.price {
    font-weight: 800;
    color: var(--accent-dark);
}

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

.meta,
.info-list {
    display: grid;
    gap: 10px;
    margin: 16px 0;
}

.form {
    display: grid;
    gap: 14px;
}

.form label,
.stack {
    display: grid;
    gap: 8px;
}

.checkbox {
    display: flex;
    align-items: center;
    gap: 8px;
}

input,
textarea,
select,
button {
    font: inherit;
}

input,
textarea,
select {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: var(--surface-strong);
    color: var(--text);
}

textarea {
    resize: vertical;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: fit-content;
    padding: 12px 18px;
    border: 0;
    border-radius: 999px;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
    color: #fff;
    cursor: pointer;
    font-weight: 700;
}

.btn.secondary {
    background: #efe2d3;
    color: var(--text);
}

.alert {
    margin-bottom: 20px;
    padding: 14px 16px;
    border-radius: 16px;
    border: 1px solid;
}

.alert.success {
    color: var(--success);
    background: rgba(22, 101, 52, 0.08);
    border-color: rgba(22, 101, 52, 0.25);
}

.alert.error {
    color: var(--error);
    background: rgba(180, 35, 24, 0.08);
    border-color: rgba(180, 35, 24, 0.22);
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table th,
.table td {
    padding: 12px 10px;
    border-bottom: 1px solid var(--line);
    vertical-align: top;
    text-align: left;
}

.table th {
    color: var(--muted);
    font-weight: 700;
}

.code-box {
    display: grid;
    gap: 10px;
    padding: 16px;
    background: #1f1a14;
    border-radius: 16px;
}

.code-box.compact {
    padding: 10px;
}

.code-box code {
    padding: 10px 12px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.08);
    color: #fff4e8;
    word-break: break-all;
}

.qr {
    display: block;
    width: min(260px, 100%);
    margin: 18px 0;
    border-radius: 18px;
    border: 1px solid var(--line);
    background: #fff;
}

.narrow {
    width: min(520px, 100%);
    margin: 40px auto 0;
}

@media (max-width: 768px) {
    .header-inner {
        flex-direction: column;
        align-items: flex-start;
        padding: 14px 0;
    }

    .nav {
        gap: 12px;
    }
}