* { margin: 0; padding: 0; box-sizing: border-box; }
    html { height: 100%; }
    body {
        height: 100vh;
        min-height: 100vh;
        background:
            linear-gradient(120deg, rgba(33,110,78,.06), transparent 30%),
            linear-gradient(240deg, rgba(47,128,237,.06), transparent 28%),
            var(--bg);
        color: var(--text);
        display: flex;
        overflow: hidden;
        font: 14px/1.55 "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", "Segoe UI", sans-serif;
    }
    button, input, select, textarea { font: inherit; }

    .btn {
        padding: 8px 13px;
        border: 1px solid transparent;
        border-radius: var(--radius);
        cursor: pointer;
        font-size: 13px;
        font-weight: 700;
        transition: transform .16s ease, box-shadow .18s ease, background .18s ease, color .18s ease, border-color .18s ease;
        outline: none;
        min-height: 36px;
    }
    .btn:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
        outline: 3px solid rgba(47,128,237,.18);
        outline-offset: 1px;
    }
    .btn-primary { background: var(--accent); color: #fff; box-shadow: 0 8px 18px rgba(33,110,78,.18); }
    .btn-primary:hover { background: #19583e; transform: translateY(-1px); box-shadow: 0 12px 24px rgba(33,110,78,.22); }
    .btn-primary:active { transform: translateY(0); box-shadow: 0 6px 14px rgba(33,110,78,.18); }
    .btn-secondary { background: var(--surface); color: var(--muted); border-color: var(--line); box-shadow: var(--shadow-sm); }
    .btn-secondary:hover { color: var(--text); border-color: #d6d0bd; background: var(--surface-soft); }
    .btn-danger { background: #fff4f2; color: var(--danger); border-color: #f4d1cb; box-shadow: var(--shadow-sm); }
    .btn-danger:hover { background: #ffe6e1; }

    .main {
        flex: 1;
        min-width: 0;
        height: 100vh;
        overflow-y: auto;
        scrollbar-gutter: stable;
        padding: 28px clamp(18px, 4vw, 48px) 52px;
    }
    .page { display: none; max-width: 1260px; margin: 0 auto; animation: pageIn .22s ease; }
    .page.active { display: block; }
    @keyframes pageIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

    .page-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        gap: 16px;
        margin-bottom: 18px;
    }
    .page-title { font-size: 24px; font-weight: 700; color: var(--text); letter-spacing: -0.01em; }
    .page-actions { display: flex; gap: 8px; flex-wrap: wrap; justify-content: flex-end; }

    .card {
        background: rgba(255,255,255,.94);
        border-radius: var(--radius);
        padding: 18px;
        margin-bottom: 18px;
        box-shadow: var(--shadow);
        border: 1px solid var(--line);
    }
    .card-title {
        font-size: 15px;
        font-weight: 650;
        color: var(--text);
        margin-bottom: 13px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 12px;
        flex-wrap: wrap;
    }
    .section-title {
        font-size: 12px;
        color: var(--faint);
        margin-bottom: 10px;
        font-weight: 600;
        letter-spacing: .06em;
        text-transform: uppercase;
    }

    .segmented {
        display: inline-flex;
        gap: 4px;
        padding: 4px;
        background: var(--surface-soft);
        border: 1px solid var(--line);
        border-radius: var(--radius);
    }
    .segmented button {
        border: none;
        background: transparent;
        color: var(--muted);
        border-radius: 7px;
        padding: 7px 12px;
        cursor: pointer;
        font-weight: 700;
        transition: color .18s ease, background .18s ease;
    }
    .segmented button:hover { color: var(--text); }
    .segmented button.active { background: var(--surface); color: var(--accent); box-shadow: var(--shadow-sm); }

    .modal-overlay {
        position: fixed;
        inset: 0;
        background: rgba(20,25,22,.42);
        display: none;
        align-items: center;
        justify-content: center;
        z-index: 100;
        padding: 18px;
        backdrop-filter: blur(8px);
    }
    .modal-overlay.active { display: flex; }
    .modal {
        background: var(--surface);
        border-radius: var(--radius-lg);
        width: min(760px, 100%);
        max-width: calc(100vw - 28px);
        max-height: 90vh;
        overflow-y: auto;
        overflow-x: hidden;
        padding: 24px;
        border: 1px solid rgba(255,255,255,.7);
        box-shadow: 0 24px 68px rgba(60,55,40,.22);
    }
    .modal-sm { width: min(520px, 100%); }
    .modal-md { width: min(700px, 100%); }
    .modal-lg { width: min(880px, 100%); }
    .modal-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; gap: 14px; }
    .modal-title { font-size: 18px; font-weight: 700; color: var(--text); }
    .close-btn { background: var(--surface-soft); border: 1px solid var(--line); border-radius: var(--radius-pill); width: 34px; height: 34px; cursor: pointer; color: var(--muted); line-height: 1; transition: color .18s ease, background .18s ease, border-color .18s ease; }
    .close-btn:hover { color: var(--text); background: #fff; border-color: #d6d0bd; }
    .form-group { margin-bottom: 15px; }
    .form-group label { display: block; font-size: 12px; color: var(--muted); margin-bottom: 6px; font-weight: 800; }
    .form-group input, .form-group select, .form-group textarea, .filter-bar input, .filter-bar select, .year-select {
        width: 100%;
        padding: 8px 10px;
        border: 1px solid var(--line);
        border-radius: var(--radius);
        font-size: 14px;
        outline: none;
        transition: border-color .18s ease, background .18s ease;
        background: #fff;
        color: var(--text);
    }
    .form-group input:hover, .form-group select:hover, .form-group textarea:hover, .filter-bar input:hover, .filter-bar select:hover, .year-select:hover { border-color: #d6d0bd; }
    .form-group input:focus, .form-group select:focus, .form-group textarea:focus, .filter-bar input:focus, .filter-bar select:focus, .year-select:focus { border-color: var(--accent-2); }
    .form-group textarea { min-height: 150px; resize: vertical; line-height: 1.7; }

    .form-row { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
    .form-section-title {
        margin: 18px 0 10px;
        color: var(--text);
        font-size: 13px;
        font-weight: 700;
    }
    .mini-link {
        margin-top: 7px;
        border: none;
        background: transparent;
        color: var(--accent-2);
        font-size: 12px;
        font-weight: 800;
        cursor: pointer;
        padding: 0;
    }
    .mini-link:hover { color: var(--accent); }
    .save-status { font-size: 12px; color: var(--faint); text-align: right; margin-top: 8px; }

    .empty-state { text-align: center; padding: 36px 16px; color: var(--faint); font-size: 13px; border: 1px dashed var(--line); border-radius: var(--radius); background: rgba(255,255,255,.52); }

    ::-webkit-scrollbar { width: 10px; height: 10px; }
    ::-webkit-scrollbar-track { background: var(--surface-soft); border-radius: 999px; }
    ::-webkit-scrollbar-thumb { background: #b5b09e; border-radius: 999px; border: 2px solid var(--surface-soft); }
    ::-webkit-scrollbar-thumb:hover { background: #9c9787; }