:root {
    --paper: #eef3f5;
    --paper-deep: #dfe8eb;
    --ink: #172027;
    --ink-soft: #53626b;
    --line: #b9c8ce;
    --white: #fbfdfd;
    --blue: #2e5c6e;
    --amber: #f2a900;
    --danger: #b34d3f;
    --shadow: 0 18px 55px rgba(23, 32, 39, .09);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    color: var(--ink);
    background: linear-gradient(rgba(46, 92, 110, .045) 1px, transparent 1px), var(--paper);
    background-size: 100% 32px;
    font-family: "Microsoft YaHei UI", "Microsoft YaHei", sans-serif;
    -webkit-font-smoothing: antialiased;
}
button, input, textarea { font: inherit; border-radius: 0; }
button:focus-visible, input:focus-visible, textarea:focus-visible, a:focus-visible {
    outline: 3px solid rgba(242, 169, 0, .4);
    outline-offset: 3px;
}
.memo-shell { width: min(1240px, calc(100% - 48px)); margin: 0 auto; }
.memo-header { height: 104px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--line); }
.memo-brand { display: flex; align-items: center; gap: 12px; color: inherit; text-decoration: none; }
.brand-mark { width: 42px; height: 42px; display: grid; place-items: center; color: var(--white); background: var(--ink); font-size: 22px; font-weight: 800; }
.memo-brand strong { display: block; font-size: 18px; letter-spacing: .18em; }
.memo-brand small, .memo-now small { display: block; margin-top: 2px; color: var(--ink-soft); font: 700 10px/1.2 Bahnschrift, Arial, sans-serif; letter-spacing: .18em; }
.memo-now { display: grid; grid-template-columns: 9px auto; column-gap: 9px; align-items: center; text-align: right; }
.now-dot { grid-row: 1 / 3; width: 9px; height: 9px; background: var(--amber); border-radius: 50%; box-shadow: 0 0 0 6px rgba(242,169,0,.13); }
.memo-now > span:nth-child(2) { font: 700 20px/1 Bahnschrift, Consolas, monospace; letter-spacing: .08em; }
.eyebrow { margin: 0 0 14px; color: var(--blue); font: 700 10px/1.4 Bahnschrift, Arial, sans-serif; letter-spacing: .2em; }
.memo-workspace { display: grid; grid-template-columns: 390px minmax(0, 1fr); gap: 54px; padding: 54px 0 82px; }
.memo-editor { align-self: start; position: sticky; top: 24px; padding: 30px; background: var(--white); border-top: 5px solid var(--blue); box-shadow: var(--shadow); }
.editor-heading, .library-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 20px; }
.editor-heading { padding-bottom: 20px; border-bottom: 2px solid var(--ink); }
.editor-heading h2, .library-heading h2 { margin: 0; font-size: 26px; letter-spacing: -.04em; }
#editingBadge { padding: 5px 8px; color: var(--ink); background: var(--amber); font-size: 9px; font-weight: 800; letter-spacing: .1em; }
.memo-editor form { margin-top: 22px; }
.memo-editor label { display: block; margin-bottom: 9px; color: var(--ink-soft); font-size: 12px; font-weight: 800; }
.memo-editor textarea { width: 100%; min-height: 260px; padding: 15px; color: var(--ink); background: var(--paper); border: 1px solid var(--line); resize: vertical; line-height: 1.8; }
.memo-editor textarea:focus { background: var(--white); border-color: var(--blue); outline: 0; }
.memo-date-field { margin-top: 16px; }
.memo-date-field span { display: flex; justify-content: space-between; }
.memo-date-field em { color: var(--ink-soft); font-size: 10px; font-style: normal; font-weight: 400; }
.memo-date-field input,
.memo-filter-bar input {
    width: 100%; padding: 10px 12px; color: var(--ink); background: var(--paper);
    border: 1px solid var(--line); font: 700 12px/1.4 Bahnschrift, "Microsoft YaHei UI", sans-serif;
}
.memo-date-field input:focus,
.memo-filter-bar input:focus { background: var(--white); border-color: var(--blue); outline: 0; }
.memo-quick-dates { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 9px; }
.memo-quick-dates button,
.memo-filter-bar .clear-button {
    padding: 7px 9px; color: var(--blue); background: transparent; border: 1px solid var(--line);
    cursor: pointer; font-size: 10px; font-weight: 800;
}
.memo-quick-dates button:hover,
.memo-filter-bar .clear-button:hover { color: var(--white); background: var(--blue); border-color: var(--blue); }
.memo-quick-dates.compact { margin-top: 0; }
.editor-meta { display: flex; justify-content: space-between; gap: 16px; margin-top: 9px; color: var(--ink-soft); font: 700 9px/1.4 Bahnschrift, "Microsoft YaHei UI", sans-serif; }
.editor-actions { display: grid; grid-template-columns: auto 1fr; gap: 9px; margin-top: 24px; }
.editor-actions button { padding: 13px 16px; cursor: pointer; font-weight: 800; }
.primary-button { display: flex; justify-content: space-between; gap: 22px; color: var(--white); background: var(--ink); border: 1px solid var(--ink); }
.primary-button:hover { background: var(--blue); border-color: var(--blue); }
.primary-button:disabled { opacity: .55; cursor: wait; }
.secondary-button { color: var(--ink); background: transparent; border: 1px solid var(--line); }
.secondary-button:hover { border-color: var(--ink); }
.memo-library { min-width: 0; }
.library-heading { align-items: flex-end; padding-bottom: 22px; border-bottom: 2px solid var(--ink); }
.library-heading h2 small { margin-left: 8px; color: var(--ink-soft); font-size: 11px; font-weight: 700; }
.memo-search { display: flex; min-width: min(100%, 350px); }
.memo-search input { min-width: 0; flex: 1; padding: 10px 12px; color: var(--ink); background: var(--white); border: 1px solid var(--line); }
.memo-search button { padding: 10px 13px; color: var(--white); background: var(--blue); border: 1px solid var(--blue); cursor: pointer; font-size: 11px; font-weight: 800; }
.memo-search .clear-button { color: var(--ink-soft); background: transparent; border-color: var(--line); }
.memo-filter-bar {
    display: grid; grid-template-columns: auto 150px minmax(0,1fr) auto; align-items: center;
    gap: 10px; margin: 14px 0 0; padding: 13px; background: rgba(251,253,253,.72);
    border: 1px solid var(--line);
}
.memo-filter-bar label { color: var(--ink-soft); font-size: 11px; font-weight: 800; }
.memo-filter-bar input { background: var(--white); }
.library-caption { margin: 12px 0 24px; color: var(--ink-soft); font-size: 11px; }
.memo-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.memo-card { position: relative; min-height: 210px; padding: 25px 24px 20px 35px; background: rgba(251,253,253,.96); box-shadow: 0 10px 28px rgba(23,32,39,.07); }
.memo-card::before { content: ""; position: absolute; inset: 0 auto 0 0; width: 12px; background: repeating-linear-gradient(to bottom, var(--blue) 0 2px, transparent 2px 12px); opacity: .7; }
.memo-card-index { display: flex; justify-content: space-between; gap: 16px; padding-bottom: 12px; border-bottom: 1px solid var(--paper-deep); color: var(--ink-soft); font: 700 9px/1.4 Bahnschrift, Consolas, monospace; letter-spacing: .08em; }
.memo-card-content { min-height: 95px; margin: 18px 0; white-space: pre-wrap; overflow-wrap: anywhere; font-size: 14px; line-height: 1.8; }
.memo-card-actions { display: flex; gap: 14px; padding-top: 13px; border-top: 1px solid var(--paper-deep); }
.memo-card-actions button { padding: 0; color: var(--blue); background: transparent; border: 0; cursor: pointer; font-size: 11px; font-weight: 800; }
.memo-card-actions button:hover { text-decoration: underline; }
.memo-card-actions .delete-memo { margin-left: auto; color: var(--danger); }
.memo-empty { grid-column: 1 / -1; padding: 70px 30px; color: var(--ink-soft); background: rgba(251,253,253,.6); border: 1px dashed var(--line); text-align: center; }
.memo-empty strong { display: block; margin-bottom: 8px; color: var(--ink); font-size: 18px; }
footer { display: flex; justify-content: space-between; gap: 20px; padding: 28px 0 42px; border-top: 1px solid var(--line); color: var(--ink-soft); font: 700 10px/1.4 Bahnschrift, Arial, sans-serif; letter-spacing: .14em; }
footer a { color: var(--blue); }
.toast { position: fixed; z-index: 10; right: 24px; bottom: 24px; max-width: 360px; padding: 14px 18px; color: var(--white); background: var(--ink); box-shadow: var(--shadow); transform: translateY(24px); opacity: 0; pointer-events: none; transition: .25s; font-size: 13px; }
.toast.is-visible { transform: translateY(0); opacity: 1; }
.toast.is-error { background: var(--danger); }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
@media (max-width: 940px) {
    .memo-workspace { grid-template-columns: 330px minmax(0,1fr); gap: 28px; }
    .memo-list { grid-template-columns: 1fr; }
    .library-heading { align-items: flex-start; flex-direction: column; }
    .memo-search { width: 100%; }
    .memo-filter-bar { grid-template-columns: 1fr; align-items: stretch; }
    .memo-quick-dates.compact { margin-top: 4px; }
}
@media (max-width: 700px) {
    .memo-shell { width: min(100% - 28px, 1240px); }
    .memo-header { height: 84px; }
    .memo-brand small, .memo-now small { display: none; }
    .memo-workspace { grid-template-columns: 1fr; padding: 36px 0 60px; }
    .memo-editor { position: static; }
    footer { flex-direction: column; }
}
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; }
}