:root {
    --bg: #f4f7fb;
    --card: #ffffff;
    --line: #dbe3ef;
    --text: #16243a;
    --muted: #64748b;
    --primary: #1e3a5f;
    --primary-2: #295389;
    --warning: #f5b400;
    --success: #16a34a;
    --danger: #dc2626;
    --medium: #f97316;
    --normal: #2563eb;
    --radius: 18px;
    --shadow: 0 14px 35px rgba(17, 24, 39, 0.08);
}

* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
    color: var(--text);
    background: var(--bg);
}

a { color: var(--primary-2); text-decoration: none; }

.mobile-shell {
    width: min(100%, 860px);
    margin: 0 auto;
    padding: 16px 14px 96px;
}

.hero-card,
.content-card,
.admin-panel,
.admin-stat-card,
.admin-login-card {
    background: var(--card);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.hero-card {
    background: linear-gradient(145deg, #17324f, #21456d);
    color: #fff;
    padding: 22px 20px;
    margin-bottom: 16px;
}
.hero-top {
    display: flex;
    gap: 8px;
    margin-bottom: 12px;
}
.hero-card h1 {
    margin: 0 0 8px;
    font-size: 24px;
    line-height: 1.35;
}
.hero-subtitle {
    margin: 0 0 16px;
    color: rgba(255,255,255,.82);
    line-height: 1.65;
}
.hero-grid, .overview-grid, .admin-info-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}
.hero-item, .overview-grid > div, .admin-info-grid > div {
    background: rgba(255,255,255,.08);
    border: 1px solid rgba(255,255,255,.12);
    border-radius: 14px;
    padding: 12px;
}
.hero-item span, .overview-grid span, .admin-info-grid span {
    display: block;
    font-size: 12px;
    color: var(--muted);
    margin-bottom: 6px;
}
.hero-item strong, .overview-grid strong, .admin-info-grid strong {
    display: block;
    font-size: 14px;
    line-height: 1.6;
}
.stats-strip {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
    margin-top: 14px;
}
.stats-strip > div {
    background: rgba(255,255,255,.08);
    padding: 10px 12px;
    border-radius: 14px;
}
.stats-strip span {
    display: block;
    font-size: 12px;
    color: rgba(255,255,255,.68);
}
.stats-strip strong {
    display: block;
    margin-top: 6px;
    font-size: 14px;
}
.content-card {
    padding: 18px 16px;
    margin-bottom: 14px;
    border: 1px solid #e6edf6;
}
.section-title-wrap {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 14px;
}
.section-title-wrap h2 {
    margin: 0;
    font-size: 19px;
}
.section-mark {
    font-size: 11px;
    font-weight: 700;
    color: var(--primary-2);
    background: #edf4ff;
    padding: 6px 10px;
    border-radius: 999px;
}
.task-banner {
    margin-top: 14px;
    background: linear-gradient(90deg, rgba(245,180,0,.18), rgba(245,180,0,.08));
    border-radius: 14px;
    padding: 14px;
}
.task-label {
    display: block;
    font-size: 12px;
    color: #815b00;
    margin-bottom: 8px;
}
.risk-grid {
    display: grid;
    gap: 12px;
}
.risk-card {
    border-radius: 16px;
    padding: 14px;
    border: 1px solid var(--line);
    background: #fff;
}
.risk-head {
    display: flex;
    justify-content: space-between;
    gap: 10px;
    align-items: center;
    margin-bottom: 8px;
}
.risk-head strong { font-size: 16px; }
.risk-card p {
    margin: 0 0 10px;
    color: var(--text);
    line-height: 1.7;
}
.risk-measure {
    font-size: 13px;
    color: var(--muted);
    line-height: 1.6;
}
.risk-tag {
    font-size: 12px;
    font-weight: 700;
    padding: 6px 10px;
    border-radius: 999px;
}
.risk-high { border-left: 5px solid var(--danger); }
.risk-high .risk-tag { background: rgba(220,38,38,.12); color: var(--danger); }
.risk-medium { border-left: 5px solid var(--medium); }
.risk-medium .risk-tag { background: rgba(249,115,22,.12); color: var(--medium); }
.risk-normal { border-left: 5px solid var(--normal); }
.risk-normal .risk-tag { background: rgba(37,99,235,.12); color: var(--normal); }

.timeline-list { display: grid; gap: 12px; }
.timeline-item {
    display: grid;
    grid-template-columns: 34px 1fr;
    gap: 12px;
    align-items: start;
}
.timeline-index {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: #e7eef9;
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
}
.timeline-content {
    border: 1px solid var(--line);
    border-radius: 16px;
    padding: 12px 14px;
}
.timeline-content h3 { margin: 0 0 8px; font-size: 16px; }
.timeline-content p { margin: 0; line-height: 1.7; color: var(--muted); }

.check-list {
    margin: 0;
    padding: 0;
    list-style: none;
    display: grid;
    gap: 10px;
}
.check-list li {
    position: relative;
    padding: 12px 14px 12px 42px;
    background: #f9fbff;
    border: 1px solid var(--line);
    border-radius: 14px;
    line-height: 1.7;
}
.check-list li::before {
    content: '✓';
    position: absolute;
    left: 14px;
    top: 11px;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: rgba(22,163,74,.12);
    color: var(--success);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
}
.attachment-grid {
    display: grid;
    gap: 12px;
}
.attachment-card {
    display: flex;
    align-items: center;
    gap: 12px;
    border: 1px solid var(--line);
    border-radius: 16px;
    padding: 14px;
    background: #fbfdff;
}
.attachment-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: #e8f0fc;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
}
.attachment-card strong, .attachment-card span {
    display: block;
}
.attachment-card span { color: var(--muted); font-size: 13px; margin-top: 4px; }

.sign-form { display: grid; gap: 16px; }
.form-grid,
.admin-form-grid,
.filter-grid,
.switch-grid,
.admin-cards-grid {
    display: grid;
    gap: 14px;
}
.form-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.admin-form-grid.cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.admin-form-grid.cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.filter-grid { grid-template-columns: repeat(6, minmax(0, 1fr)); align-items: end; }
.switch-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.admin-cards-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); margin-bottom: 18px; }
label span {
    display: block;
    margin-bottom: 6px;
    font-size: 13px;
    color: var(--muted);
}
input[type='text'],
input[type='password'],
input[type='date'],
select,
textarea {
    width: 100%;
    border: 1px solid var(--line);
    background: #fff;
    border-radius: 14px;
    padding: 12px 14px;
    font-size: 14px;
    color: var(--text);
    outline: none;
}
textarea { resize: vertical; min-height: 110px; }
input:focus, select:focus, textarea:focus {
    border-color: var(--primary-2);
    box-shadow: 0 0 0 3px rgba(41,83,137,.12);
}
.agree-boxes { display: grid; gap: 10px; }
.checkbox-item {
    display: flex;
    gap: 10px;
    align-items: flex-start;
    background: #f8fbff;
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 12px 14px;
}
.checkbox-item input { margin-top: 3px; }
.signature-panel {
    border: 1px solid var(--line);
    border-radius: 18px;
    padding: 14px;
    background: #fbfdff;
}
.signature-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}
#signatureCanvas {
    width: 100%;
    height: 220px;
    background: #fff;
    border: 1px dashed #b9c8db;
    border-radius: 14px;
    touch-action: none;
}
.signature-tip,
.export-tip,
.tips-box {
    font-size: 13px;
    line-height: 1.7;
    color: var(--muted);
}
.tips-box {
    background: #fff8e9;
    border: 1px solid rgba(245,180,0,.25);
    border-radius: 14px;
    padding: 12px 14px;
}
.primary-btn,
.link-btn {
    border: 0;
    cursor: pointer;
    font-size: 15px;
}
.primary-btn {
    background: linear-gradient(90deg, var(--primary), var(--primary-2));
    color: #fff;
    border-radius: 14px;
    padding: 13px 18px;
    font-weight: 600;
}
.sticky-btn { position: sticky; bottom: 12px; }
.link-btn {
    background: transparent;
    color: var(--primary-2);
    padding: 0;
}
.badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 6px 10px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 700;
}
.badge-primary { background: rgba(255,255,255,.14); color: #fff; }
.badge-dark { background: rgba(0,0,0,.18); color: #fff; }
.alert {
    padding: 12px 14px;
    border-radius: 14px;
    margin-bottom: 14px;
    line-height: 1.6;
}
.alert-success { background: rgba(22,163,74,.1); color: var(--success); border: 1px solid rgba(22,163,74,.18); }
.alert-danger { background: rgba(220,38,38,.08); color: var(--danger); border: 1px solid rgba(220,38,38,.16); }

.admin-page { background: #eef3f9; }
.admin-shell {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 240px 1fr;
}
.admin-sidebar {
    background: #12243a;
    color: #fff;
    padding: 24px 18px;
}
.sidebar-brand {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 20px;
}
.sidebar-nav { display: grid; gap: 8px; }
.sidebar-nav a {
    color: rgba(255,255,255,.82);
    padding: 12px 14px;
    border-radius: 12px;
}
.sidebar-nav a.active,
.sidebar-nav a:hover { background: rgba(255,255,255,.12); color: #fff; }
.admin-main { padding: 24px; }
.admin-topbar {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    align-items: flex-start;
    margin-bottom: 16px;
}
.admin-topbar h1 { margin: 0 0 6px; font-size: 28px; }
.admin-topbar p, .topbar-meta { margin: 0; color: var(--muted); }
.admin-stat-card {
    padding: 18px;
    border: 1px solid #e3ecf7;
}
.admin-stat-card span {
    display: block;
    color: var(--muted);
    font-size: 13px;
    margin-bottom: 8px;
}
.admin-stat-card strong { font-size: 26px; }
.admin-panel {
    padding: 20px;
    border: 1px solid #e3ecf7;
}
.panel-title {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 16px;
}
.panel-subtitle {
    font-size: 16px;
    font-weight: 700;
    margin: 18px 0 12px;
}
.form-panel .primary-btn { margin-top: 16px; }
.span-3 { grid-column: span 3; }
.switch-item {
    display: flex;
    gap: 10px;
    align-items: center;
    border: 1px solid var(--line);
    background: #f9fbff;
    border-radius: 14px;
    padding: 13px 14px;
}
.table-wrap { overflow: auto; }
.admin-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
    min-width: 1080px;
}
.admin-table th,
.admin-table td {
    padding: 12px 10px;
    border-bottom: 1px solid #e5edf7;
    text-align: left;
    vertical-align: top;
}
.admin-table thead th {
    background: #f7faff;
    color: var(--muted);
    position: sticky;
    top: 0;
}
.empty-row { text-align: center; color: var(--muted); }
.admin-login-page {
    min-height: 100vh;
    display: grid;
    place-items: center;
    background: linear-gradient(135deg, #17324f, #21456d);
}
.admin-login-card {
    width: min(100% - 24px, 420px);
    padding: 28px 24px;
}
.login-brand {
    font-size: 14px;
    color: var(--primary-2);
    font-weight: 700;
    margin-bottom: 10px;
}
.admin-login-card h1 { margin: 0 0 8px; }
.admin-login-card p { margin: 0 0 18px; color: var(--muted); }
.login-form { display: grid; gap: 14px; }

@media (max-width: 960px) {
    .admin-shell { grid-template-columns: 1fr; }
    .admin-sidebar { padding: 18px 14px; }
    .sidebar-nav { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .admin-main { padding: 16px; }
    .admin-cards-grid, .admin-form-grid.cols-3, .filter-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .span-3 { grid-column: span 2; }
}

@media (max-width: 640px) {
    .hero-grid,
    .overview-grid,
    .admin-info-grid,
    .stats-strip,
    .form-grid,
    .admin-form-grid.cols-3,
    .admin-form-grid.cols-2,
    .filter-grid,
    .switch-grid,
    .admin-cards-grid,
    .sidebar-nav { grid-template-columns: 1fr; }

    .admin-topbar { flex-direction: column; }
    .mobile-shell { padding-left: 12px; padding-right: 12px; }
    .hero-card h1 { font-size: 22px; }
    .section-title-wrap h2 { font-size: 18px; }
    .admin-main { padding: 12px; }
    .span-3 { grid-column: span 1; }
}