:root {
    --primary: #b3415f;
    --primary-dark: #8c2e46;
    --bg: #faf6f0;
    --card: #ffffff;
    --text: #3a2b2b;
    --muted: #8a7a78;
    --border: #eadcd2;
    --radius: 14px;
}

* {
    box-sizing: border-box;
}

html {
    height: 100%;
}

body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    margin: 0;
    font-family: "Hiragino Sans", "Noto Sans CJK SC", "Microsoft YaHei", sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

.site-header {
    background: linear-gradient(135deg, #5b2333, #b3415f);
    color: #fff;
    box-shadow: 0 2px 12px rgba(0, 0, 0, .15);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    padding: 14px 20px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    color: #fff;
    text-decoration: none;
}

.brand-mark {
    font-size: 2rem;
}

.brand small {
    display: block;
    font-size: .7rem;
    opacity: .85;
}

.main-nav {
    display: flex;
    gap: 4px;
    flex-wrap: wrap;
}

.main-nav a {
    color: #fff;
    text-decoration: none;
    padding: 6px 14px;
    border-radius: 999px;
    font-weight: 600;
    transition: background .2s;
}

.main-nav a:hover {
    background: rgba(255, 255, 255, .18);
}

.main-content {
    flex: 1 0 auto;
    padding: 32px 20px 48px;
}

.hero {
    text-align: center;
    padding: 42px 20px;
    background: var(--card);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    margin-bottom: 28px;
}

.hero h1 {
    margin-top: 0;
    font-size: 2rem;
}

.hero-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-block;
    padding: 10px 22px;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: #fff;
    color: var(--primary);
    text-decoration: none;
    font-weight: 700;
    cursor: pointer;
    transition: all .2s;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, .08);
}

.btn-primary {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
}

.btn-primary:hover {
    background: var(--primary-dark);
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 18px;
}

.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, .04);
}

.card h2 {
    margin-top: 0;
}

.line-card {
    padding: 0;
    overflow: hidden;
}

.line-details summary {
    list-style: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 18px 20px;
    cursor: pointer;
    user-select: none;
}

.line-details summary::-webkit-details-marker {
    display: none;
}

.line-info {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.line-info h2 {
    margin: 0;
    font-size: 1.15rem;
}

.line-toggle {
    flex-shrink: 0;
    padding: 6px 14px;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: #fff;
    color: var(--primary);
    font-size: .85rem;
    font-weight: 700;
    transition: all .2s;
}

.line-details[open] .line-toggle {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
}

.line-stations {
    margin: 0;
    padding: 8px 20px 20px 44px;
    border-top: 1px dashed var(--border);
    line-height: 2;
}

.line-dot {
    display: inline-block;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    margin-right: 6px;
    vertical-align: middle;
}

.table-wrap {
    overflow-x: auto;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}

table {
    width: 100%;
    border-collapse: collapse;
    min-width: 680px;
}

th, td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

th {
    background: #f7ede6;
    color: var(--primary-dark);
    font-size: .9rem;
}

tr:last-child td {
    border-bottom: none;
}

.status {
    display: inline-block;
    padding: 2px 10px;
    background: #eef7ee;
    color: #2e7d32;
    border-radius: 999px;
    font-size: .85rem;
}

.line-badge {
    display: inline-block;
    padding: 4px 12px;
    background: #f7ede6;
    color: var(--primary-dark);
    border-radius: 999px;
    font-size: .85rem;
    font-weight: 600;
    white-space: nowrap;
}

.ticket-form {
    max-width: 520px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    display: grid;
    gap: 16px;
}

.ticket-form label {
    display: grid;
    gap: 6px;
    font-weight: 600;
}

.ticket-form input,
.ticket-form select {
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 10px;
    font-size: 1rem;
    background: #fff;
}

.plan-list {
    margin-top: 24px;
    display: grid;
    gap: 14px;
}

.plan-card {
    border-left: 4px solid var(--primary);
}

.plan-card h2 {
    margin-top: 0;
    font-size: 1.1rem;
}

.plan-card p {
    margin: 6px 0;
}

.notice {
    margin-top: 20px;
    background: #fff8e6;
    border: 1px solid #f0d48a;
    border-radius: var(--radius);
    padding: 18px 22px;
}

.muted {
    color: var(--muted);
    font-size: .9rem;
}

.site-footer {
    flex-shrink: 0;
    background: #3b2a2a;
    color: #e6d7d2;
    padding: 22px 0;
    text-align: center;
    font-size: .9rem;
}

.site-footer p {
    margin: 0;
}

/* ==================== 站点地图 ==================== */

.map-page {
    position: relative;
    min-height: calc(100vh - 180px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 20px;
}

.map-back {
    position: absolute;
    top: 0;
    left: 0;
    z-index: 10;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 18px;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: #fff;
    color: var(--primary);
    text-decoration: none;
    font-weight: 700;
    box-shadow: 0 2px 8px rgba(0, 0, 0, .06);
    transition: all .2s;
}

.map-back:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, .1);
}

.map-frame {
    width: 100%;
    max-width: calc(80vh * 16 / 9);
    height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.map-frame img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border: 3px solid var(--border);
    border-radius: 20px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, .1);
}

/* ==================== 座位可视化 ==================== */

#seat-map {
    display: grid;
    gap: 16px;
    margin-top: 8px;
}

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

.carriage-title {
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: 10px;
}

.seat-rows {
    display: grid;
    gap: 8px;
}

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

.seat-row-label {
    width: 48px;
    color: var(--muted);
    font-size: .85rem;
    text-align: right;
}

.seat {
    width: 38px;
    height: 34px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: #fff;
    color: var(--text);
    font-weight: 700;
    cursor: pointer;
    transition: all .15s;
}

.seat:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.seat.selected {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
}