:root {
  --bg: #f6f3ef;
  --panel: #fffdf9;
  --ink: #2f2924;
  --muted: #7c7068;
  --line: #e6ddd4;
  --rose: #c9585b;
  --rose-dark: #963f45;
  --sand: #ead9c5;
  --mint: #dfe9df;
  --shadow: 0 18px 50px rgba(89, 60, 42, 0.1);
  font-family: "LXGW WenKai", "Noto Serif SC", "Source Han Serif SC", serif;
}

* { box-sizing: border-box; }
body { margin: 0; background: radial-gradient(circle at top left, #ffe7df 0, transparent 32%), linear-gradient(135deg, #f8f5ef, #efe6dc); color: var(--ink); }
button, input, textarea { font: inherit; }
button, .nav-link, .summary-card a { cursor: pointer; }

.loading-screen { min-height: 100vh; display: grid; place-items: center; }
.login-page { min-height: 100vh; display: grid; grid-template-columns: minmax(340px, 460px) minmax(320px, 1fr); gap: 32px; align-items: center; padding: 48px clamp(24px, 7vw, 120px); }
.login-card, .login-aside, .panel, .summary-card { background: rgba(255,253,249,0.88); border: 1px solid rgba(230,221,212,0.9); box-shadow: var(--shadow); backdrop-filter: blur(12px); }
.login-card { border-radius: 32px; padding: 34px; }
.brand-mark { width: max-content; border: 1px solid var(--rose); color: var(--rose-dark); border-radius: 999px; padding: 7px 12px; font-size: 0.78rem; letter-spacing: 0.12em; text-transform: uppercase; }
.login-card h1 { margin: 18px 0 8px; font-size: clamp(2rem, 5vw, 4rem); line-height: 1; }
.lede { color: var(--muted); line-height: 1.7; }
.login-form { display: grid; gap: 14px; margin-top: 28px; }
.login-form label, .field-block, .settings-card label { display: grid; gap: 8px; color: var(--muted); font-size: 0.88rem; }
.field-block.readonly p { margin: 0; color: var(--ink); background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 12px 14px; line-height: 1.6; }
.edit-note { margin: 0; color: var(--muted); background: #f4ebe2; border-radius: 14px; padding: 10px 12px; }
input, textarea { width: 100%; border: 1px solid var(--line); border-radius: 16px; background: #fff; color: var(--ink); padding: 12px 14px; outline: none; }
textarea { min-height: 74px; resize: vertical; }
button, .summary-card a { border: 0; border-radius: 999px; padding: 10px 14px; background: var(--ink); color: #fff; text-decoration: none; display: inline-flex; justify-content: center; align-items: center; gap: 6px; }
button.ghost, .ghost { background: #f1e7dd; color: var(--ink); }
button.primary { background: var(--rose); }
button:disabled { opacity: .6; cursor: wait; }
.form-error { color: var(--rose-dark); margin: 0; }
.safe-note, .hint, small { color: var(--muted); }
.login-aside { border-radius: 32px; padding: 42px; min-height: 320px; display: flex; flex-direction: column; justify-content: end; }
.login-aside span { color: var(--rose-dark); }
.login-aside strong { display: block; font-size: clamp(1.6rem, 4vw, 3.4rem); line-height: 1.1; margin: 16px 0; max-width: 760px; }

.workbench-shell { min-height: 100vh; display: grid; grid-template-columns: 236px minmax(0, 1fr); }
.side-nav { padding: 22px; border-right: 1px solid var(--line); background: rgba(255, 251, 245, .7); position: sticky; top: 0; height: 100vh; display: flex; flex-direction: column; gap: 10px; }
.logo-block { margin-bottom: 18px; display: grid; gap: 6px; }
.logo-block span { color: var(--rose-dark); letter-spacing: .14em; font-size: .78rem; }
.logo-block strong { font-size: 1.1rem; }
.nav-link { text-decoration: none; color: var(--ink); border: 1px solid transparent; border-radius: 18px; padding: 12px 14px; display: grid; gap: 4px; }
.nav-link small { font-size: .76rem; }
.nav-link.active { background: #fff; border-color: var(--line); box-shadow: 0 10px 24px rgba(89,60,42,.08); }
.logout { margin-top: auto; }
.main-panel { padding: 28px clamp(22px, 4vw, 56px) 56px; min-width: 0; }
.top-strip { display: flex; justify-content: space-between; gap: 24px; align-items: start; margin-bottom: 24px; }
.top-strip p { margin: 0 0 6px; color: var(--rose-dark); }
.top-strip h1 { margin: 0; font-size: clamp(1.45rem, 2.2vw, 2.2rem); line-height: 1.12; letter-spacing: 0; }
.status-pill, .cache-tag, .state-badge { border: 1px solid var(--line); border-radius: 999px; padding: 8px 12px; background: #fff; color: var(--muted); white-space: nowrap; }
.status-pill { max-width: min(100%, 360px); overflow: hidden; text-overflow: ellipsis; }
.status-pill span { display: inline-block; width: 8px; height: 8px; background: #77a36b; border-radius: 999px; margin-right: 8px; }

.hero-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; margin-bottom: 18px; }
.summary-card { border-radius: 24px; padding: 18px; display: grid; gap: 10px; }
.summary-card p { margin: 0; color: var(--muted); }
.summary-card strong { font-size: 1.4rem; }
.summary-card a { width: max-content; background: var(--rose); padding: 8px 12px; }
.dashboard-grid { display: grid; grid-template-columns: 1.35fr .9fr; gap: 18px; align-items: start; }
.panel { border-radius: 28px; padding: 20px; min-width: 0; }
.panel.large { grid-row: span 2; }
.panel-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 14px; }
.panel-head h2 { margin: 0; font-size: 1.2rem; }
.panel-head a { color: var(--rose-dark); text-decoration: none; }
.hot-list, .note-list, .stack { display: grid; gap: 12px; }
.hot-row, .queue-row, .topic-row, .note-card { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; gap: 12px; align-items: center; border: 1px solid var(--line); border-radius: 18px; padding: 12px; background: rgba(255,255,255,.74); color: var(--ink); text-align: left; }
.hot-row b { color: var(--rose-dark); font-size: 1.2rem; }
.hot-row strong, .queue-row strong, .note-card strong { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.split-layout { display: grid; grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr); gap: 18px; align-items: start; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chips button { background: #fff; color: var(--ink); border: 1px solid var(--line); }
.search-box { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 10px; align-items: center; margin-bottom: 12px; }
.note-card { grid-template-columns: 54px minmax(0, 1fr); width: 100%; }
.note-card span { width: 54px; height: 64px; border-radius: 14px; background: var(--sand); display: grid; place-items: center; color: var(--rose-dark); }
.note-card em { display: block; color: var(--rose-dark); font-style: normal; margin-top: 6px; }
.detail-panel h3 { margin-top: 0; }
.empty-copy, .empty p { color: var(--muted); }
.topics-layout { display: grid; grid-template-columns: 360px minmax(0, 1fr); gap: 18px; align-items: start; }
.topic-list { display: grid; gap: 10px; }
.topic-row { width: 100%; grid-template-columns: minmax(0, 1fr); }
.topic-row.active { border-color: rgba(201,88,91,.5); background: #fff7f2; }
.topic-detail { display: grid; gap: 14px; }
.status-rail { display: flex; flex-wrap: wrap; gap: 8px; }
.status-rail span { padding: 7px 10px; border-radius: 999px; background: #f0e7df; color: var(--muted); font-size: .82rem; }
.status-rail .current { background: var(--rose); color: #fff; }
.actions-row { display: flex; flex-wrap: wrap; gap: 10px; }
.placeholder { max-width: 860px; }
.settings-card { display: grid; gap: 10px; max-width: 520px; }

@media (max-width: 980px) {
  .workbench-shell { grid-template-columns: 1fr; }
  .side-nav { position: static; height: auto; flex-direction: row; overflow-x: auto; border-right: 0; border-bottom: 1px solid var(--line); }
  .logo-block, .logout { display: none; }
  .nav-link { min-width: 118px; }
  .hero-grid, .dashboard-grid, .split-layout, .topics-layout, .login-page { grid-template-columns: 1fr; }
  .top-strip { flex-direction: column; }
}

@media (max-width: 560px) {
  .main-panel { padding: 18px 14px 42px; }
  .panel, .summary-card, .login-card, .login-aside { border-radius: 20px; padding: 16px; }
  .hot-row, .queue-row { grid-template-columns: 1fr; }
  .search-box { grid-template-columns: 1fr; }
}
.preview-button { margin-top: 14px; width: 100%; background: #f1e7dd; color: var(--ink); border: 1px solid var(--line); }
.preview-note { margin: 8px 0 0; color: var(--muted); font-size: .82rem; }