/* ================================================================
   DigiForensicsBeta — system.css
   Complete design system: reset, variables, layout, typography,
   forms, components, page layouts. No vendor dependencies.
   ================================================================ */

/* --- Reset & Base ------------------------------------------------ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --sp-1: 4px; --sp-2: 8px; --sp-3: 12px; --sp-4: 16px;
    --sp-5: 20px; --sp-6: 24px; --sp-8: 32px; --sp-10: 40px;
    --sp-12: 48px; --sp-16: 64px;

    --ink: #0c1222;
    --ink-2: #1a2438;
    --ink-3: #3d4f6a;
    --ink-muted: #7e8fa8;
    --ink-faint: #b4c1d4;

    --canvas: #eef1f6;
    --surface: #ffffff;
    --surface-alt: #f6f8fb;
    --surface-sunken: #edf1f7;
    --surface-glass: rgba(255, 255, 255, 0.74);

    --border: #dce3ed;
    --border-strong: #bfc9d9;
    --border-focus: #5b8af5;

    --accent: #2563eb;
    --accent-hover: #1d4ed8;
    --accent-soft: rgba(37, 99, 235, 0.08);
    --accent-2: #0891b2;
    --accent-2-soft: rgba(8, 145, 178, 0.08);

    --positive: #0d9668;
    --positive-soft: rgba(13, 150, 104, 0.08);
    --warning: #ca8a04;
    --warning-soft: rgba(202, 138, 4, 0.08);
    --negative: #dc2626;
    --negative-soft: rgba(220, 38, 38, 0.08);

    --font-body: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    --font-mono: "SF Mono", "Cascadia Code", ui-monospace, "Menlo", monospace;

    --text-xs: 0.6875rem;
    --text-sm: 0.8125rem;
    --text-base: 0.875rem;
    --text-lg: 1rem;
    --text-xl: 1.125rem;
    --text-2xl: 1.375rem;
    --text-3xl: 1.75rem;
    --text-4xl: 2.1rem;

    --leading-tight: 1.35;
    --leading-base: 1.6;
    --leading-loose: 1.75;

    --radius: 4px;
    --radius-lg: 7px;
    --radius-pill: 999px;

    --shadow-xs: 0 1px 2px rgba(12, 18, 34, 0.04);
    --shadow-sm: 0 1px 4px rgba(12, 18, 34, 0.06);
    --shadow: 0 2px 6px rgba(12, 18, 34, 0.06);
    --shadow-lg: 0 4px 16px rgba(12, 18, 34, 0.08);

    --content-max: 1180px;
    --sidebar-w: 260px;
    --header-h: 0px;
    --footer-h: 0px;

    --df-screen-height: 100vh;
    --df-header-total: 0px;
    --df-footer-total: 0px;
    --df-workspace-height: 100vh;

    color-scheme: light;
}

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: var(--text-base);
    line-height: var(--leading-base);
    color: var(--ink);
    background: transparent;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100vh;
}

img, svg, video { display: block; max-width: 100%; }
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }
strong, b { font-weight: 600; }
ul, ol { list-style: none; }
table { border-collapse: collapse; width: 100%; }
button { cursor: pointer; font: inherit; }
input, select, textarea, button { font: inherit; color: inherit; }
fieldset { border: none; }

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: var(--leading-tight);
    color: var(--ink);
}

/* --- App Shell --------------------------------------------------- */
.dfb-shell {
    display: grid;
    grid-template-rows: auto 1fr auto;
    min-height: var(--df-screen-height, 100vh);
    position: relative;
}

.dfb-shell-bg {
    position: fixed;
    inset: 0;
    z-index: -1;
    pointer-events: none;
    overflow: hidden;
    background: var(--canvas);
}

.dfb-shell-bg::before {
    content: "";
    position: absolute;
    width: 600px; height: 600px;
    top: -120px; left: -160px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.10) 0%, transparent 70%);
    filter: blur(80px);
    animation: blob-drift-1 18s ease-in-out infinite alternate;
}

.dfb-shell-bg::after {
    content: "";
    position: absolute;
    width: 520px; height: 520px;
    bottom: -80px; right: -120px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(8, 145, 178, 0.08) 0%, transparent 70%);
    filter: blur(80px);
    animation: blob-drift-2 22s ease-in-out infinite alternate;
}

@keyframes blob-drift-1 {
    0% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(60px, 40px) scale(1.08); }
    100% { transform: translate(-30px, 80px) scale(0.95); }
}

@keyframes blob-drift-2 {
    0% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(-50px, -30px) scale(1.1); }
    100% { transform: translate(40px, -60px) scale(0.92); }
}

.dfb-grid-overlay {
    position: absolute;
    inset: 0;
    pointer-events: none;
    background-image:
        linear-gradient(rgba(12, 18, 34, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(12, 18, 34, 0.02) 1px, transparent 1px);
    background-size: 64px 64px;
}

.dfb-particles { position: absolute; inset: 0; pointer-events: none; }
.dfb-particle-canvas { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; }

/* --- Header ------------------------------------------------------ */
.dfb-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--surface-glass);
    backdrop-filter: blur(16px) saturate(1.4);
    -webkit-backdrop-filter: blur(16px) saturate(1.4);
    border-bottom: 1px solid var(--border);
}

.dfb-header-inner {
    max-width: var(--content-max);
    margin: 0 auto;
    padding: 0 var(--sp-6);
    display: flex;
    align-items: center;
    height: 52px;
    gap: var(--sp-4);
}

.dfb-brand {
    display: flex;
    align-items: center;
    gap: var(--sp-3);
    text-decoration: none;
    color: var(--ink);
    flex-shrink: 0;
}

.dfb-brand-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px; height: 28px;
    background: var(--accent);
    color: #fff;
    font-weight: 700;
    font-size: var(--text-xs);
    border-radius: var(--radius);
    letter-spacing: 0.02em;
}

.dfb-brand-logo {
    width: 28px; height: 28px;
    border-radius: var(--radius);
    object-fit: contain;
}

.dfb-brand-text {
    display: flex;
    flex-direction: column;
    line-height: 1.15;
}

.dfb-brand-text strong {
    font-size: var(--text-sm);
    font-weight: 700;
    letter-spacing: 0.01em;
}

.dfb-brand-text span {
    font-size: var(--text-xs);
    color: var(--ink-muted);
}

.dfb-nav {
    display: flex;
    align-items: center;
    gap: var(--sp-1);
    flex: 1;
    overflow-x: auto;
    scrollbar-width: none;
}

.dfb-nav::-webkit-scrollbar { display: none; }

.dfb-nav-link {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--ink-3);
    padding: var(--sp-2) var(--sp-3);
    border-radius: var(--radius);
    white-space: nowrap;
    text-decoration: none;
}

.dfb-nav-link:hover { color: var(--ink); background: var(--accent-soft); }
.dfb-nav-link.is-active { color: var(--accent); background: var(--accent-soft); }

.dfb-header-actions {
    display: flex;
    align-items: center;
    gap: var(--sp-2);
    flex-shrink: 0;
    margin-left: auto;
}

.dfb-mobile-toggle {
    display: none;
    align-items: center;
    justify-content: center;
    width: 36px; height: 36px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: transparent;
    color: var(--ink-3);
    margin-left: auto;
}

.dfb-mobile-toggle span {
    display: block;
    width: 18px; height: 2px;
    background: currentColor;
    position: relative;
}

.dfb-mobile-toggle span::before,
.dfb-mobile-toggle span::after {
    content: "";
    position: absolute;
    width: 100%; height: 100%;
    background: inherit;
    left: 0;
}

.dfb-mobile-toggle span::before { top: -6px; }
.dfb-mobile-toggle span::after { top: 6px; }

/* --- Footer ------------------------------------------------------ */
.dfb-footer {
    position: relative;
    z-index: 1;
    border-top: 1px solid var(--border);
    background:
        linear-gradient(180deg, rgba(255,255,255,.86), rgba(245,248,252,.96)),
        linear-gradient(120deg, rgba(37, 99, 235, .03), rgba(8, 145, 178, .03));
    padding: var(--sp-6) var(--sp-6) var(--sp-4);
    color: var(--ink-muted);
}

.dfb-footer-inner {
    max-width: var(--content-max);
    margin: 0 auto;
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(180px, .8fr) minmax(260px, .95fr) minmax(220px, .8fr);
    gap: var(--sp-5);
}

.dfb-footer h3 {
    font-size: var(--text-base);
    margin-bottom: var(--sp-3);
}

.dfb-footer-brand,
.dfb-footer-links,
.dfb-footer-support,
.dfb-footer-qrs {
    min-width: 0;
}

.dfb-footer-qrs {
    display: block;
    align-self: start;
}

.dfb-footer-brand-top {
    display: flex;
    align-items: center;
    gap: var(--sp-3);
    margin-bottom: var(--sp-3);
}

.dfb-footer-logo {
    width: 42px;
    height: 42px;
    object-fit: contain;
}

.dfb-footer-brand-top h2 {
    font-size: var(--text-lg);
    margin-bottom: 2px;
}

.dfb-footer-brand-top p,
.dfb-footer-description,
.dfb-qr-copy span,
.dfb-footer-bottom,
.dfb-footer-link-grid a {
    font-size: var(--text-sm);
}

.dfb-footer-description {
    color: var(--ink-3);
}

.dfb-footer-description + .dfb-footer-description {
    margin-top: var(--sp-3);
}

.dfb-footer-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: var(--sp-3);
}

.dfb-footer-meta span {
    display: inline-flex;
    align-items: center;
    padding: 0.18rem 0.5rem;
    border-radius: var(--radius-pill);
    background: rgba(37, 99, 235, 0.07);
    color: var(--ink-3);
    font-size: var(--text-xs);
}

.dfb-footer-link-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6px var(--sp-3);
}

.dfb-footer-link-grid a {
    color: var(--ink-3);
}

.dfb-footer-link-grid a:hover {
    color: var(--accent);
}

.dfb-footer-contact-list {
    display: grid;
    gap: 10px;
    margin-top: var(--sp-3);
}

.dfb-footer-contact-card {
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.62);
}

.dfb-footer-contact-card strong {
    display: block;
    color: var(--ink);
    font-size: var(--text-sm);
    word-break: break-word;
}

.dfb-footer-label {
    display: block;
    margin-bottom: 4px;
    font-size: var(--text-xs);
    color: var(--ink-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.dfb-footer-support-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--sp-2);
    margin-top: var(--sp-3);
}

.dfb-footer-qr-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.dfb-qr-card {
    padding: 10px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.7);
    display: flex;
    flex-direction: column;
    gap: 10px;
    min-width: 0;
}

.dfb-qr-media {
    aspect-ratio: 1 / 1;
    width: 100%;
    max-width: 104px;
    border-radius: 10px;
    overflow: hidden;
    background: linear-gradient(180deg, #f8fbff, #edf3f9);
    border: 1px solid rgba(191, 201, 217, 0.7);
}

.dfb-qr-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.dfb-qr-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--sp-2);
    font-size: var(--text-xs);
    color: var(--ink-muted);
    text-align: center;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.88), rgba(240, 245, 252, 0.96));
}

.dfb-qr-copy {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.dfb-qr-copy strong {
    font-size: var(--text-sm);
    color: var(--ink);
}

.dfb-footer-bottom {
    max-width: var(--content-max);
    margin: var(--sp-4) auto 0;
    padding-top: var(--sp-3);
    border-top: 1px solid rgba(191, 201, 217, 0.7);
    display: flex;
    justify-content: space-between;
    gap: var(--sp-3);
    flex-wrap: wrap;
    font-size: var(--text-xs);
}

/* --- Page Container ---------------------------------------------- */
.dfb-page {
    position: relative;
    z-index: 1;
    flex: 1;
}

.dfb-container {
    max-width: var(--content-max);
    margin: 0 auto;
    padding: 0 var(--sp-6);
}

/* --- Buttons ----------------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--sp-2);
    padding: 0.48rem 0.82rem;
    font-size: var(--text-sm);
    font-weight: 500;
    line-height: 1.4;
    border: 1px solid transparent;
    border-radius: var(--radius);
    cursor: pointer;
    white-space: nowrap;
    text-decoration: none;
    outline: none;
}

.btn:focus-visible {
    box-shadow: 0 0 0 2px var(--surface), 0 0 0 4px var(--border-focus);
}

.btn:disabled, .btn.is-disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

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

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

.btn-outline {
    background: transparent;
    color: var(--accent);
    border-color: var(--border-strong);
}

.btn-outline:hover { background: var(--accent-soft); border-color: var(--accent); color: var(--accent); }

.btn-ghost {
    background: transparent;
    color: var(--ink-3);
    border-color: transparent;
}

.btn-ghost:hover { background: var(--surface-sunken); color: var(--ink); }

.btn-sm { padding: var(--sp-1) var(--sp-3); font-size: var(--text-xs); }
.btn-lg { padding: var(--sp-3) var(--sp-6); font-size: var(--text-lg); }
.btn-block { width: 100%; }

/* --- Form Controls ----------------------------------------------- */
.field { display: flex; flex-direction: column; gap: var(--sp-1); }

.field-label {
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--ink-3);
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

.input, .select, .textarea {
    width: 100%;
    padding: var(--sp-2) var(--sp-3);
    font-size: var(--text-base);
    color: var(--ink);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    outline: none;
}

.input:focus, .select:focus, .textarea:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px var(--accent-soft);
}

.input.is-invalid, .select.is-invalid, .textarea.is-invalid {
    border-color: var(--negative);
}

.input.is-invalid:focus, .select.is-invalid:focus, .textarea.is-invalid:focus {
    box-shadow: 0 0 0 3px var(--negative-soft);
}

.textarea { resize: vertical; min-height: 80px; }

.select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M3 5l3 3 3-3' stroke='%2394a3b8' fill='none' stroke-width='1.5'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 10px center;
    padding-right: 32px;
}

.field-error {
    font-size: var(--text-xs);
    color: var(--negative);
}

.check-row {
    display: flex;
    align-items: center;
    gap: var(--sp-2);
    font-size: var(--text-sm);
    cursor: pointer;
}

.check-row input[type="checkbox"],
.check-row input[type="radio"] {
    width: 16px; height: 16px;
    accent-color: var(--accent);
    cursor: pointer;
}

/* Bootstrap compatibility aliases */
.form-control { composes: input; }
.form-select { composes: select; }
.form-control,
.form-select {
    width: 100%;
    padding: var(--sp-2) var(--sp-3);
    font-size: var(--text-base);
    color: var(--ink);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    outline: none;
}

.form-control:focus, .form-select:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px var(--accent-soft);
}

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M3 5l3 3 3-3' stroke='%2394a3b8' fill='none' stroke-width='1.5'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 10px center;
    padding-right: 32px;
}

.form-label {
    display: block;
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--ink-3);
    margin-bottom: var(--sp-1);
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

.form-check {
    display: flex;
    align-items: center;
    gap: var(--sp-2);
}

.form-check-input {
    width: 16px; height: 16px;
    accent-color: var(--accent);
}

.form-check-label { font-size: var(--text-sm); }

.is-invalid { border-color: var(--negative) !important; }
.invalid-feedback { font-size: var(--text-xs); color: var(--negative); margin-top: var(--sp-1); }

/* --- Tags / Chips ------------------------------------------------ */
.tag {
    display: inline-flex;
    align-items: center;
    padding: 1px var(--sp-2);
    font-size: var(--text-xs);
    font-weight: 500;
    border-radius: var(--radius-pill);
    border: 1px solid var(--border);
    color: var(--ink-3);
    background: var(--surface);
    line-height: 1.5;
    white-space: nowrap;
}

.tag.accent { background: var(--accent-soft); color: var(--accent); border-color: transparent; }
.tag.positive { background: var(--positive-soft); color: var(--positive); border-color: transparent; }
.tag.warning { background: var(--warning-soft); color: var(--warning); border-color: transparent; }
.tag.negative { background: var(--negative-soft); color: var(--negative); border-color: transparent; }

/* Legacy chip alias */
.chip { composes: tag; }
.chip,
[class*="chip"] {
    display: inline-flex;
    align-items: center;
    padding: 1px var(--sp-2);
    font-size: var(--text-xs);
    font-weight: 500;
    border-radius: var(--radius-pill);
    border: 1px solid var(--border);
    color: var(--ink-3);
    background: var(--surface);
    line-height: 1.5;
    white-space: nowrap;
}

.chip.muted { color: var(--ink-muted); }
.chip.success { background: var(--positive-soft); color: var(--positive); border-color: transparent; }
.chip.warning { background: var(--warning-soft); color: var(--warning); border-color: transparent; }
.chip.danger { background: var(--negative-soft); color: var(--negative); border-color: transparent; }

/* --- Notice / Alert ---------------------------------------------- */
.notice {
    padding: var(--sp-3) var(--sp-4);
    font-size: var(--text-sm);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--ink-2);
}

.notice.info { border-left: 3px solid var(--accent); background: var(--accent-soft); }
.notice.success { border-left: 3px solid var(--positive); background: var(--positive-soft); }
.notice.warning { border-left: 3px solid var(--warning); background: var(--warning-soft); }
.notice.danger { border-left: 3px solid var(--negative); background: var(--negative-soft); }

/* Legacy notice-bar alias */
.notice-bar {
    padding: var(--sp-3) var(--sp-4);
    font-size: var(--text-sm);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--ink-2);
}

.notice-bar.info { border-left: 3px solid var(--accent); background: var(--accent-soft); }
.notice-bar.success { border-left: 3px solid var(--positive); background: var(--positive-soft); }
.notice-bar.warning { border-left: 3px solid var(--warning); background: var(--warning-soft); }
.notice-bar.danger { border-left: 3px solid var(--negative); background: var(--negative-soft); }

/* --- Progress ---------------------------------------------------- */
.progress {
    width: 100%;
    height: 6px;
    background: var(--surface-sunken);
    border-radius: var(--radius-pill);
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--accent), var(--accent-2));
    border-radius: var(--radius-pill);
    transition: width 0.4s ease;
}

/* --- Card / Surface ---------------------------------------------- */
.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.card-body { padding: var(--sp-5); }

.surface {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--sp-6);
}

.surface-alt {
    background: var(--surface-alt);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--sp-6);
}

.surface-muted {
    background: var(--surface-sunken);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--sp-6);
}

.surface-plain {
    padding: var(--sp-5);
}

.surface-pad { padding: var(--sp-5); }
.surface-pad-lg { padding: var(--sp-6); }
.compact-surface { padding: var(--sp-4); }

/* --- Table ------------------------------------------------------- */
.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--text-sm);
}

.data-table th {
    font-weight: 600;
    color: var(--ink-3);
    text-align: left;
    padding: var(--sp-2) var(--sp-3);
    border-bottom: 2px solid var(--border);
    font-size: var(--text-xs);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.data-table td {
    padding: var(--sp-3);
    border-bottom: 1px solid var(--border);
    vertical-align: top;
}

.data-table tbody tr:last-child td { border-bottom: none; }
.data-table tbody tr:hover { background: var(--surface-alt); }

.data-table .text-end { text-align: right; }
.data-table .fw-semibold { font-weight: 600; }
.data-table .summary { font-size: var(--text-xs); color: var(--ink-muted); }

/* admin-table alias */
.admin-table { composes: data-table; }
.admin-table,
table.admin-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--text-sm);
}

.admin-table th {
    font-weight: 600;
    color: var(--ink-3);
    text-align: left;
    padding: var(--sp-2) var(--sp-3);
    border-bottom: 2px solid var(--border);
    font-size: var(--text-xs);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.admin-table td {
    padding: var(--sp-3);
    border-bottom: 1px solid var(--border);
    vertical-align: top;
}

.admin-table tbody tr:last-child td { border-bottom: none; }
.admin-table tbody tr:hover { background: var(--surface-alt); }
.admin-table .summary { font-size: var(--text-xs); color: var(--ink-muted); }

.table-responsive { overflow-x: auto; }

/* --- Typography & Prose ------------------------------------------ */
.prose {
    font-size: var(--text-base);
    line-height: var(--leading-loose);
    color: var(--ink-2);
}

.prose h1 { font-size: var(--text-3xl); margin: var(--sp-10) 0 var(--sp-4); }
.prose h2 { font-size: var(--text-2xl); margin: var(--sp-8) 0 var(--sp-3); }
.prose h3 { font-size: var(--text-xl); margin: var(--sp-6) 0 var(--sp-3); }
.prose h4 { font-size: var(--text-lg); margin: var(--sp-5) 0 var(--sp-2); }
.prose p { margin-bottom: var(--sp-4); }
.prose ul, .prose ol { padding-left: var(--sp-5); margin-bottom: var(--sp-4); }
.prose ul { list-style: disc; }
.prose ol { list-style: decimal; }
.prose li { margin-bottom: var(--sp-1); }
.prose a { color: var(--accent); text-decoration: underline; text-underline-offset: 2px; }
.prose blockquote {
    border-left: 3px solid var(--accent);
    padding: var(--sp-3) var(--sp-4);
    margin: var(--sp-4) 0;
    background: var(--accent-soft);
    border-radius: 0 var(--radius) var(--radius) 0;
}

.prose code {
    font-family: var(--font-mono);
    font-size: 0.9em;
    padding: 1px 5px;
    background: var(--surface-sunken);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}

.prose pre {
    padding: var(--sp-4);
    background: var(--ink);
    color: var(--ink-faint);
    border-radius: var(--radius-lg);
    overflow-x: auto;
    margin: var(--sp-4) 0;
    font-size: var(--text-sm);
}

.prose pre code {
    background: none;
    border: none;
    padding: 0;
    color: inherit;
}

.prose img {
    border-radius: var(--radius-lg);
    margin: var(--sp-4) 0;
}

.prose table {
    width: 100%;
    margin: var(--sp-4) 0;
    border-collapse: collapse;
}

.prose th, .prose td {
    padding: var(--sp-2) var(--sp-3);
    border: 1px solid var(--border);
    text-align: left;
}

.prose th { background: var(--surface-alt); font-weight: 600; }

.compact-prose { font-size: var(--text-sm); }
.compact-prose h1 { font-size: var(--text-xl); }
.compact-prose h2 { font-size: var(--text-lg); }
.compact-prose h3 { font-size: var(--text-base); }

/* --- Page Head --------------------------------------------------- */
.pg-head {
    padding: var(--sp-8) 0 var(--sp-6);
}

.pg-kicker {
    font-size: var(--text-xs);
    font-weight: 700;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: var(--sp-2);
}

.pg-title {
    font-size: var(--text-3xl);
    font-weight: 700;
    margin-bottom: var(--sp-2);
    letter-spacing: -0.01em;
}

.pg-lead {
    font-size: var(--text-lg);
    color: var(--ink-3);
    max-width: 640px;
}

.pg-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--sp-3);
    margin-top: var(--sp-3);
    font-size: var(--text-sm);
    color: var(--ink-muted);
}

.pg-meta span::before {
    content: "·";
    margin-right: var(--sp-3);
    color: var(--ink-faint);
}

.pg-meta span:first-child::before { content: none; }

.pg-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--sp-2);
    margin-top: var(--sp-3);
}

/* Legacy aliases */
.page-head { composes: pg-head; }
.page-head,
header.page-head {
    padding: var(--sp-8) 0 var(--sp-6);
}

.page-head-compact,
header.page-head-compact {
    padding: var(--sp-6) 0 var(--sp-4);
}

.section-kicker {
    font-size: var(--text-xs);
    font-weight: 700;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: var(--sp-2);
}

.page-title {
    font-size: var(--text-3xl);
    font-weight: 700;
    margin-bottom: var(--sp-2);
    letter-spacing: -0.01em;
}

.page-lead {
    font-size: var(--text-lg);
    color: var(--ink-3);
    max-width: 640px;
}

.page-head-compact .page-lead {
    font-size: var(--text-base);
    max-width: 40rem;
}

.page-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--sp-3);
    margin-top: var(--sp-3);
    font-size: var(--text-sm);
    color: var(--ink-muted);
}

.page-meta span::before {
    content: "·";
    margin-right: var(--sp-3);
    color: var(--ink-faint);
}

.page-meta span:first-child::before { content: none; }

/* --- Breadcrumb -------------------------------------------------- */
.breadcrumbs {
    display: flex;
    align-items: center;
    gap: var(--sp-2);
    font-size: var(--text-sm);
    color: var(--ink-muted);
    padding: var(--sp-4) 0 0;
}

.breadcrumbs a { color: var(--ink-3); }
.breadcrumbs a:hover { color: var(--accent); }
.breadcrumbs strong { color: var(--ink); font-weight: 500; }

/* Legacy alias */
.breadcrumb-trail {
    display: flex;
    align-items: center;
    gap: var(--sp-2);
    font-size: var(--text-sm);
    color: var(--ink-muted);
    padding: var(--sp-4) 0 0;
}

.breadcrumb-trail a { color: var(--ink-3); }
.breadcrumb-trail a:hover { color: var(--accent); }
.breadcrumb-trail strong { color: var(--ink); font-weight: 500; }

/* --- Section Stack ----------------------------------------------- */
.section-stack { display: flex; flex-direction: column; gap: var(--sp-6); }
.section-head {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--sp-4);
    margin-bottom: var(--sp-4);
}

.section-title {
    font-size: var(--text-xl);
    font-weight: 600;
}

.section-summary {
    font-size: var(--text-sm);
    color: var(--ink-muted);
    margin-top: var(--sp-1);
}

.section-link {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--accent);
    white-space: nowrap;
}

.section-link:hover { color: var(--accent-hover); }

/* --- Catalog / List ---------------------------------------------- */
.catalog { display: flex; flex-direction: column; }

.catalog-line {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--sp-5);
    padding: var(--sp-4) 0;
    border-bottom: 1px solid var(--border);
}

.catalog-compact .catalog-line {
    gap: var(--sp-4);
    padding: var(--sp-3) 0;
}

.catalog-compact .catalog-title {
    font-size: var(--text-base);
}

.catalog-compact .catalog-summary {
    font-size: var(--text-sm);
}

.catalog-compact .catalog-side strong {
    font-size: var(--text-xl);
}

.catalog-line:last-child { border-bottom: none; }

.catalog-head {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--sp-2);
    margin-bottom: var(--sp-2);
}

.catalog-title {
    font-size: var(--text-lg);
    font-weight: 600;
    margin-bottom: var(--sp-1);
}

.catalog-summary {
    font-size: var(--text-sm);
    color: var(--ink-3);
}

.catalog-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--sp-3);
    font-size: var(--text-xs);
    color: var(--ink-muted);
    margin-top: var(--sp-1);
}

.catalog-side {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: var(--sp-1);
    font-size: var(--text-sm);
    color: var(--ink-muted);
    text-align: right;
    flex-shrink: 0;
    min-width: 90px;
}

.catalog-side strong {
    font-size: var(--text-2xl);
    font-family: var(--font-mono);
    color: var(--ink);
}

.catalog-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--sp-1);
    margin-top: var(--sp-2);
}

.catalog-actions {
    display: flex;
    gap: var(--sp-2);
    margin-top: var(--sp-3);
}

/* --- Two-column content shell ------------------------------------ */
.content-shell {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: var(--sp-6);
    align-items: start;
}

.writeup-shell {
    grid-template-columns: minmax(0, 1.45fr) 280px;
}

.aside-stack {
    display: flex;
    flex-direction: column;
    gap: var(--sp-5);
    position: sticky;
    top: 72px;
    align-self: start;
    max-height: calc(100vh - 88px);
    overflow-y: auto;
    scrollbar-width: thin;
}

/* --- Doc Index (wiki) -------------------------------------------- */
.doc-index {
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: var(--sp-6);
    align-items: start;
}

.doc-rail {
    position: sticky;
    top: 72px;
    align-self: start;
    max-height: calc(100vh - 88px);
    overflow-y: auto;
    scrollbar-width: thin;
    display: flex;
    flex-direction: column;
    gap: var(--sp-4);
}

.compact-doc-rail {
    gap: var(--sp-3);
}

.doc-rail h3 {
    font-size: var(--text-lg);
    font-weight: 600;
}

.doc-rail p {
    font-size: var(--text-sm);
    color: var(--ink-muted);
}

/* --- Content Outline --------------------------------------------- */
.content-outline {
    display: flex;
    flex-direction: column;
    gap: 1px;
}

.content-outline-link {
    display: block;
    padding: var(--sp-1) var(--sp-3);
    font-size: var(--text-xs);
    color: var(--ink-muted);
    border-left: 2px solid transparent;
    text-decoration: none;
    line-height: 1.5;
}

.content-outline-link:hover { color: var(--ink); background: var(--surface-alt); }
.content-outline-link.is-active { color: var(--accent); border-left-color: var(--accent); background: var(--accent-soft); }

.content-outline-link.level-1 { padding-left: var(--sp-3); }
.content-outline-link.level-2 { padding-left: var(--sp-6); }
.content-outline-link.level-3 { padding-left: calc(var(--sp-6) + var(--sp-4)); }

/* --- Filter / Query Bar ------------------------------------------ */
.filter-bar {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--sp-4) var(--sp-5);
    margin-bottom: var(--sp-5);
}

.filter-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: var(--sp-3);
    align-items: end;
}

.filter-actions {
    display: flex;
    gap: var(--sp-2);
    align-items: end;
}

/* Legacy aliases */
.query-bar {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--sp-4) var(--sp-5);
    margin-bottom: var(--sp-5);
}

.compact-query-bar {
    padding: 12px 14px;
    margin-bottom: var(--sp-4);
}

.query-bar-light { background: var(--surface-alt); }

.query-grid, .archive-filter-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: var(--sp-3);
    align-items: end;
}

.query-grid-compact {
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
}

.query-control { display: flex; flex-direction: column; gap: var(--sp-1); }

.query-control label {
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--ink-3);
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

.compact-query-bar .query-control label {
    letter-spacing: 0.01em;
}

.span-keyword { grid-column: span 2; }
.archive-filter-actions { align-items: end; }

/* --- Hero -------------------------------------------------------- */
.hero {
    position: relative;
    padding: var(--sp-12) 0 var(--sp-8);
    overflow: hidden;
}

.hero-copy {
    max-width: 620px;
    margin-bottom: var(--sp-6);
}

.hero-tag {
    display: inline-flex;
    padding: var(--sp-1) var(--sp-3);
    font-size: var(--text-xs);
    font-weight: 700;
    color: var(--accent);
    background: var(--accent-soft);
    border-radius: var(--radius-pill);
    letter-spacing: 0.04em;
    text-transform: uppercase;
    margin-bottom: var(--sp-4);
}

.hero-title {
    font-size: var(--text-4xl);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.2;
    margin-bottom: var(--sp-3);
}

.hero-lead {
    font-size: var(--text-lg);
    color: var(--ink-3);
    line-height: var(--leading-loose);
}

.hero-entries {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--sp-4);
}

.hero-entry {
    background: var(--surface-glass);
    backdrop-filter: blur(8px);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--sp-4);
    display: flex;
    flex-direction: column;
    gap: var(--sp-2);
}

.hero-entry h3 { font-size: var(--text-lg); font-weight: 600; }
.hero-entry p { font-size: var(--text-sm); color: var(--ink-3); flex: 1; }

/* Legacy hero aliases */
/* .df-hero { position: relative; padding: var(--sp-16) 0 var(--sp-12); overflow: hidden; display: grid; grid-template-columns: 1fr auto; gap: var(--sp-8); align-items: center; }
/* .df-hero-copy { max-width: 620px; position: relative; z-index: 1; } */
/* .df-hero-visual { position: relative; z-index: 1; display: flex; align-items: center; justify-content: center; } */
/* .df-hero-logo { width: 16rem; max-width: 100%; height: auto; object-fit: contain; filter: drop-shadow(0 4px 16px rgba(0, 0, 0, 0.08)); } */
.df-hero-tag { display: inline-flex; padding: var(--sp-1) var(--sp-3); font-size: var(--text-xs); font-weight: 700; color: var(--accent); background: var(--accent-soft); border-radius: var(--radius-pill); letter-spacing: 0.04em; text-transform: uppercase; margin-bottom: var(--sp-4); }
.df-hero-title { font-size: var(--text-4xl); font-weight: 700; letter-spacing: -0.02em; line-height: 1.2; margin-bottom: var(--sp-3); }
.df-hero-lead { font-size: var(--text-lg); color: var(--ink-3); line-height: var(--leading-loose); }
/* .df-hero-entries { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--sp-4); position: relative; z-index: 1; } */
.df-entry { background: var(--surface-glass); backdrop-filter: blur(8px); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: var(--sp-4); display: flex; flex-direction: column; gap: var(--sp-2); }

.df-entry > .chip {
    align-self: flex-start;
    width: fit-content;
}

.df-entry h3 { font-size: var(--text-lg); font-weight: 600; }
.df-entry p { font-size: var(--text-sm); color: var(--ink-3); flex: 1; }
.df-hero-entries {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--sp-4);
    position: relative;
    z-index: 1;
    margin-bottom: var(--sp-6);
}
.df-hero {
    position: relative;
    padding: var(--sp-12) 0 var(--sp-8);
    overflow: hidden;
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: var(--sp-6);
    align-items: center;
}

.df-hero-copy {
    max-width: 620px;
    position: relative;
    z-index: 1;
}

.df-hero-visual {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    min-width: 0;
}

.df-hero-logo-live {
    width: clamp(520px, 42vw, 760px);
    min-height: 220px;
    position: relative;
    isolation: isolate;
    flex-shrink: 0;
    display: flex;
    align-items: stretch;
}

.df-hero-logo-live::before {
    content: "";
    position: absolute;
    inset: 8% 6%;
    pointer-events: none;
    background:
        radial-gradient(circle at 50% 50%, rgba(130, 210, 255, .16), transparent 38%),
        linear-gradient(120deg, rgba(37, 99, 235, .08), rgba(8, 145, 178, .04));
    filter: blur(22px);
    z-index: 0;
}

.df-typewriter-panel {
    width: 100%;
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: var(--sp-4) var(--sp-5);
    border-radius: 18px;
    border: 1px solid rgba(155, 172, 197, 0.44);
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.88), rgba(245, 248, 252, 0.8)),
        linear-gradient(135deg, rgba(37, 99, 235, 0.04), rgba(8, 145, 178, 0.03));
    box-shadow:
        0 18px 36px rgba(37, 99, 235, 0.06),
        inset 0 1px 0 rgba(255, 255, 255, 0.65);
    overflow: hidden;
}

.df-typewriter-panel::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        linear-gradient(90deg, rgba(37, 99, 235, 0.03) 0, rgba(37, 99, 235, 0.03) 1px, transparent 1px, transparent 72px),
        linear-gradient(rgba(15, 23, 42, 0.025) 0, rgba(15, 23, 42, 0.025) 1px, transparent 1px, transparent 28px);
    opacity: .5;
    pointer-events: none;
}

.df-typewriter-head {
    position: relative;
    z-index: 1;
    display: flex;
    gap: var(--sp-2);
    margin-bottom: var(--sp-5);
}

.df-typewriter-dot {
    width: 10px;
    height: 10px;
    border-radius: 999px;
    box-shadow: 0 0 12px rgba(12, 18, 34, 0.08);
}

.df-typewriter-dot-red { background: #fb7185; }
.df-typewriter-dot-amber { background: #fbbf24; }
.df-typewriter-dot-green { background: #34d399; }

.df-typewriter-code {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: var(--sp-3);
    min-height: 184px;
    font-family: var(--font-mono);
}

.df-typewriter-prompt-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--sp-3);
    font-size: var(--text-sm);
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.df-typewriter-prompt {
    color: var(--accent-2);
}

.df-typewriter-state {
    color: var(--ink-muted);
}

.df-typewriter-command-row {
    display: block;
}

.df-typewriter-word-row {
    position: relative;
    display: block;
    width: max-content;
    max-width: 100%;
    min-height: 1.4em;
    color: var(--ink);
    white-space: nowrap;
}

.df-typewriter-command {
    font-size: var(--text-base);
    color: var(--ink-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.df-typewriter-word,
.df-typewriter-word-ghost {
    min-width: 1ch;
    font-size: clamp(2.1rem, 5vw, 4.4rem);
    line-height: 1.04;
    font-weight: 700;
    letter-spacing: -0.04em;
    white-space: nowrap;
}

.df-typewriter-word-ghost {
    visibility: hidden;
    display: inline-block;
    pointer-events: none;
}

.df-typewriter-word-live {
    position: absolute;
    top: 0;
    left: 0;
    display: inline-flex;
    align-items: baseline;
    gap: var(--sp-2);
    white-space: nowrap;
}

.df-typewriter-word {
    color: var(--ink);
    text-shadow: 0 0 18px rgba(96, 165, 250, 0.12);
}

.df-typewriter-caret {
    display: inline-block;
    width: 0.7ch;
    height: 0.95em;
    border-radius: 3px;
    background: linear-gradient(180deg, #7dd3fc, #2563eb);
    box-shadow: 0 0 14px rgba(37, 99, 235, 0.24);
    animation: dfTypeCaret 0.95s steps(1) infinite;
}

.df-typewriter-subline {
    font-size: var(--text-sm);
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--ink-muted);
}

.df-typewriter-subline-alt {
    font-size: var(--text-base);
    letter-spacing: 0.06em;
    text-transform: none;
    color: var(--ink-3);
}

.df-typewriter-subline-meta {
    font-size: var(--text-sm);
    letter-spacing: 0.08em;
    color: var(--ink-3);
}

@keyframes dfTypeCaret {
    0%, 49% { opacity: 1; }
    50%, 100% { opacity: 0; }
}

/* @media (max-width: 980px) {
    .df-hero {
        grid-template-columns: 1fr;
        gap: var(--sp-6);
    }

    .df-hero-visual {
        justify-content: flex-start;
    }

    .df-hero-logo-live {
        width: min(100%, 680px);
    }
} */

@media (max-width: 980px) {
    .df-hero {
        grid-template-columns: 1fr;
        gap: var(--sp-6);
    }

    .df-hero-copy {
        max-width: none;
    }

    .df-hero-visual {
        order: -1;
        justify-content: center;
        margin-bottom: var(--sp-1);
    }

    .df-hero-visual .df-hero-logo-live {
        width: min(100%, 420px);
        min-height: 212px;
    }
}


/* --- Homepage Panels --------------------------------------------- */
.df-panel-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 340px;
    gap: var(--sp-5);
    margin-bottom: var(--sp-5);
}

.df-panel {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--sp-5);
}

.df-panel-soft {
    background: var(--surface-alt);
}

.df-side-stack { display: flex; flex-direction: column; gap: var(--sp-5); }
.df-ledger { composes: catalog; }

/* --- Timeline List ----------------------------------------------- */
.timeline-list { display: flex; flex-direction: column; gap: var(--sp-3); }

.timeline-item {
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--sp-4);
    background: var(--surface);
}

.timeline-item h3 { font-size: var(--text-lg); font-weight: 600; margin-bottom: var(--sp-1); }
.timeline-item p { font-size: var(--text-sm); color: var(--ink-3); }

/* --- Bulletin List ----------------------------------------------- */
.bulletin-list { display: flex; flex-direction: column; gap: var(--sp-4); }

.bulletin-item {
    display: flex;
    gap: var(--sp-4);
    padding: var(--sp-4) 0;
    border-bottom: 1px solid var(--border);
}

.bulletin-item:last-child { border-bottom: none; }

.bulletin-date {
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 60px;
    font-size: var(--text-xs);
    color: var(--ink-muted);
}

.bulletin-date strong {
    font-size: var(--text-xl);
    font-family: var(--font-mono);
    color: var(--ink);
}

.bulletin-body h3 { font-size: var(--text-lg); font-weight: 600; margin-bottom: var(--sp-1); }
.bulletin-body p { font-size: var(--text-sm); color: var(--ink-3); }

/* --- Feature Band ------------------------------------------------ */
.feature-bands { display: flex; flex-direction: column; gap: var(--sp-4); }

.feature-band {
    padding: var(--sp-4);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background: var(--surface-alt);
}

.feature-band h3 { font-size: var(--text-base); font-weight: 600; margin-bottom: var(--sp-1); }
.feature-band p { font-size: var(--text-sm); color: var(--ink-3); }

/* --- Package Archive --------------------------------------------- */
.package-archive { display: flex; flex-direction: column; gap: var(--sp-4); }

.package-line {
    display: flex;
    justify-content: space-between;
    gap: var(--sp-6);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--sp-5);
}

.compact-archive .package-line {
    gap: var(--sp-4);
    padding: var(--sp-4);
}

.compact-archive .package-title {
    font-size: var(--text-lg);
}

.compact-archive .package-line-aside {
    min-width: 88px;
}

.package-line-main { flex: 1; min-width: 0; }

.package-title { font-size: var(--text-xl); font-weight: 600; margin-bottom: var(--sp-1); }
.package-summary { font-size: var(--text-sm); color: var(--ink-3); margin-bottom: var(--sp-2); }
.package-facts {
    display: flex;
    flex-wrap: wrap;
    gap: var(--sp-3);
    font-size: var(--text-xs);
    color: var(--ink-muted);
}

.package-line-aside {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: var(--sp-2);
    flex-shrink: 0;
    min-width: 100px;
}

.package-stat {
    text-align: right;
    font-size: var(--text-xs);
    color: var(--ink-muted);
}

.package-stat strong {
    display: block;
    font-size: var(--text-lg);
    font-family: var(--font-mono);
    color: var(--ink);
}

.df-competition-archive { composes: package-archive; }

/* --- Competition / Challenge Show (v2 — three-column workspace) -- */

/* Hero */
.comp-hero {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--sp-5) var(--sp-6);
    margin-bottom: var(--sp-5);
}
.comp-hero-chips { display: flex; flex-wrap: wrap; gap: var(--sp-2); margin-bottom: var(--sp-2); }
.comp-hero-title { font-size: var(--text-2xl); font-weight: 700; margin-bottom: var(--sp-1); }
.comp-hero-lead { font-size: var(--text-sm); color: var(--ink-3); margin-bottom: var(--sp-2); }
.comp-hero-meta {
    display: flex; flex-wrap: wrap; gap: var(--sp-3);
    font-size: var(--text-xs); color: var(--ink-muted); font-family: var(--font-mono);
}

/* Workspace grid */
.comp-workspace {
    display: grid;
    grid-template-columns: 200px minmax(0, 1fr) 280px;
    gap: var(--sp-5);
    align-items: start;
}

/* ── Left Rail ── */
.comp-rail {
    position: sticky;
    top: calc(56px + var(--sp-4));
    max-height: calc(100vh - 56px - var(--sp-4) * 2);
    display: flex;
    flex-direction: column;
}
.comp-rail-inner {
    display: flex; flex-direction: column; gap: var(--sp-4);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--sp-4);
    overflow-y: auto;
    scrollbar-width: thin;
}

.comp-rail-title {
    overflow: hidden;
    max-height: 0;
    opacity: 0;
    transition: max-height 0.3s ease, opacity 0.25s ease;
}
.comp-rail-title.is-visible { max-height: 60px; opacity: 1; }
.comp-rail-title-text {
    font-size: var(--text-sm); font-weight: 600; color: var(--ink);
    display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}

.comp-rail-stats {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--sp-2); text-align: center;
    padding-bottom: var(--sp-3); border-bottom: 1px solid var(--border);
}
.comp-rail-stats .stat-val { display: block; font-size: var(--text-lg); font-weight: 700; font-family: var(--font-mono); color: var(--ink); }
.comp-rail-stats .stat-lbl { font-size: 10px; color: var(--ink-muted); text-transform: uppercase; letter-spacing: 0.06em; }

.comp-rail-nav {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 3px;
}

.qnav-link {
    display: flex; align-items: center; justify-content: center;
    width: 100%; aspect-ratio: 1; min-height: 32px;
    font-size: var(--text-xs); font-weight: 600; font-family: var(--font-mono);
    border-radius: var(--radius); border: 1px solid var(--border);
    background: var(--surface); color: var(--ink-3);
    text-decoration: none; transition: border-color 0.15s, background 0.15s;
}
.qnav-link:hover { border-color: var(--border-strong); background: var(--surface-alt); }
.qnav-link.is-active { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }
.qnav-link.status-unanswered { background: var(--surface); color: var(--ink-muted); }
.qnav-link.status-draft { background: var(--warning-soft); color: var(--warning); border-color: var(--warning); }
.qnav-link.status-incorrect { background: var(--negative-soft); color: var(--negative); border-color: var(--negative); }
.qnav-link.status-correct { background: var(--positive-soft); color: var(--positive); border-color: var(--positive); }
.qnav-link.status-pending_review { background: var(--accent-soft); color: var(--accent); border-color: var(--accent); }

.comp-rail-legend {
    display: flex; flex-wrap: wrap; gap: var(--sp-1) var(--sp-3);
    font-size: 10px; color: var(--ink-muted);
}
.comp-rail-legend span { display: inline-flex; align-items: center; gap: 4px; }
.comp-rail-legend .dot { width: 7px; height: 7px; border-radius: 50%; display: inline-block; }
.dot.unanswered { background: var(--ink-faint); }
.dot.draft { background: var(--warning); }
.dot.incorrect { background: var(--negative); }
.dot.correct { background: var(--positive); }

.comp-rail-progress { padding-top: var(--sp-3); border-top: 1px solid var(--border); }

.rail-info-block { padding-top: var(--sp-3); border-top: 1px solid var(--border); }
.rail-info-block .section-kicker { margin-bottom: var(--sp-2); }
.rail-facts { display: flex; flex-direction: column; gap: 2px; font-size: var(--text-xs); }
.rail-facts > div { display: flex; justify-content: space-between; padding: 2px 0; }
.rail-facts > div > span { color: var(--ink-muted); }
.rail-facts > div > strong { color: var(--ink); font-family: var(--font-mono); }
.rail-progress-bar { height: 4px; border-radius: 2px; background: var(--surface-sunken); overflow: hidden; }
.rail-progress-fill { height: 100%; background: var(--accent); border-radius: 2px; transition: width 0.4s ease; }
.rail-progress-text { font-size: 10px; color: var(--ink-muted); font-family: var(--font-mono); margin-top: 4px; display: block; }

/* ── Center: Questions ── */
.comp-main { display: flex; flex-direction: column; gap: var(--sp-4); }

.comp-section-head { grid-column: 1 / -1; margin-bottom: var(--sp-1); }
.comp-section-tag {
    display: inline-block;
    font-size: var(--text-xs); font-weight: 600; color: var(--accent);
    background: var(--accent-soft); padding: 2px var(--sp-2); border-radius: var(--radius);
    letter-spacing: 0.02em;
}

.comp-question-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--sp-4);
    margin-bottom: var(--sp-4);
}

/* ── Question Card (lightweight) ── */
.q-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--sp-4);
    display: flex; flex-direction: column; gap: var(--sp-3);
    transition: border-color 0.15s;
}
.q-card:hover { border-color: var(--border-strong); }

.q-card-head {
    display: flex; align-items: center; flex-wrap: wrap; gap: var(--sp-2);
    font-size: var(--text-xs);
}
.q-num {
    font-weight: 700; font-family: var(--font-mono); font-size: var(--text-sm);
    color: var(--ink-2); min-width: 20px;
}
.q-type {
    color: var(--ink-muted); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 1px 6px; font-size: 10px; font-weight: 500;
}
.q-tag.required { color: var(--warning); border-color: var(--warning); }
.q-pts {
    margin-left: auto; font-family: var(--font-mono); font-weight: 600; color: var(--ink-3);
}

.q-prompt { font-size: var(--text-sm); line-height: 1.65; color: var(--ink-2); }
.q-prompt p:last-child { margin-bottom: 0; }

/* Status Chips */
[class*="status-chip-"] { font-size: var(--text-xs); }
.status-chip-unanswered { color: var(--ink-muted); }
.status-chip-draft { background: var(--warning-soft); color: var(--warning); border-color: transparent; }
.status-chip-incorrect { background: var(--negative-soft); color: var(--negative); border-color: transparent; }
.status-chip-correct { background: var(--positive-soft); color: var(--positive); border-color: transparent; }
.status-chip-pending_review { background: var(--accent-soft); color: var(--accent); border-color: transparent; }

/* Question Feedback */
.q-feedback {
    padding: var(--sp-2) var(--sp-3); font-size: var(--text-xs); border-radius: var(--radius);
}
.q-feedback:empty { display: none; }
.q-feedback.status-correct { background: var(--positive-soft); color: var(--positive); }
.q-feedback.status-incorrect { background: var(--negative-soft); color: var(--negative); }
.q-feedback.status-draft { background: var(--warning-soft); color: var(--warning); }
.q-feedback.status-pending_review { background: var(--accent-soft); color: var(--accent); }
.q-feedback.status-unanswered { background: var(--surface-sunken); color: var(--ink-muted); }

/* Answer Options */
.q-options { display: flex; flex-direction: column; gap: var(--sp-1); }
.q-form { display: flex; flex-direction: column; gap: var(--sp-3); }

.q-option {
    display: flex; align-items: center; gap: var(--sp-2);
    padding: var(--sp-2) var(--sp-3);
    border: 1px solid var(--border); border-radius: var(--radius);
    cursor: pointer; font-size: var(--text-sm); transition: border-color 0.15s;
}
.q-option:hover { border-color: var(--border-strong); background: var(--surface-alt); }
.q-option.is-disabled { opacity: 0.6; cursor: not-allowed; }
.q-option input[type="radio"],
.q-option input[type="checkbox"] { width: 15px; height: 15px; accent-color: var(--accent); flex-shrink: 0; }

.option-badge {
    display: inline-flex; align-items: center; justify-content: center;
    width: 20px; height: 20px; font-size: 10px; font-weight: 700;
    font-family: var(--font-mono); border-radius: var(--radius);
    background: var(--surface-sunken); color: var(--ink-3); flex-shrink: 0;
}

.q-textarea {
    width: 100%; min-height: 80px; resize: vertical;
    padding: var(--sp-2) var(--sp-3); font-size: var(--text-sm);
    border: 1px solid var(--border); border-radius: var(--radius);
    background: var(--surface); outline: none; font-family: inherit;
}
.q-textarea:focus { border-color: var(--border-focus); box-shadow: 0 0 0 2px var(--accent-soft); }

.q-input {
    width: 100%; padding: var(--sp-2) var(--sp-3);
    font-size: var(--text-sm); border: 1px solid var(--border);
    border-radius: var(--radius); background: var(--surface); outline: none;
}
.q-input:focus { border-color: var(--border-focus); box-shadow: 0 0 0 2px var(--accent-soft); }

/* Question Action Row */
.q-actions {
    display: flex; justify-content: space-between; align-items: center; gap: var(--sp-3);
    padding-top: var(--sp-2); border-top: 1px solid var(--border);
}
.q-meta { display: flex; gap: var(--sp-2); font-size: 10px; color: var(--ink-muted); font-family: var(--font-mono); }
.q-btns { display: flex; gap: var(--sp-2); }
.btn-xs { font-size: var(--text-xs); padding: 3px 10px; }

.q-guest {
    padding: var(--sp-2) var(--sp-3); font-size: var(--text-xs);
    color: var(--ink-3); background: var(--surface-sunken); border-radius: var(--radius);
}

/* ── Right: Info Rail ── */
.comp-info {
    position: sticky; top: calc(56px + var(--sp-4));
    max-height: calc(100vh - 56px - var(--sp-4) * 2); overflow-y: auto; scrollbar-width: thin;
}
.comp-info-inner { display: flex; flex-direction: column; gap: var(--sp-4); }

.info-block {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--sp-4);
}

.info-facts { display: flex; flex-direction: column; gap: var(--sp-2); }
.info-facts > div {
    display: flex; justify-content: space-between; font-size: var(--text-sm); padding: var(--sp-1) 0;
}
.info-facts > div > span { color: var(--ink-muted); }
.info-facts > div > strong { color: var(--ink); font-family: var(--font-mono); font-size: var(--text-sm); }
.info-facts > div > a { font-weight: 500; }

.info-actions { display: flex; flex-direction: column; gap: var(--sp-3); }
.rail-help { font-size: var(--text-xs); color: var(--ink-muted); margin-top: var(--sp-1); }

/* ── Responsive ── */
@media (max-width: 1199.98px) {
    .comp-workspace { grid-template-columns: 1fr; }
    .comp-rail { position: static; max-height: none; }
    .comp-rail-inner { flex-direction: row; flex-wrap: wrap; align-items: center; gap: var(--sp-3); }
    .comp-rail-title { display: none; }
    .comp-rail-stats { grid-template-columns: repeat(3, auto); gap: var(--sp-3); padding-bottom: 0; border-bottom: none; }
    .comp-rail-nav { grid-template-columns: repeat(auto-fill, minmax(32px, 1fr)); flex: 1 1 100%; }
    .comp-rail-legend { display: none; }
    .comp-rail-progress { flex: 1 1 100%; padding-top: var(--sp-2); border-top: none; }
    .comp-info { position: static; max-height: none; }
    .comp-question-grid { grid-template-columns: 1fr; }
}
@media (max-width: 767.98px) {
    .comp-hero { padding: var(--sp-4); }
    .comp-hero-title { font-size: var(--text-xl); }
    .comp-rail-stats .stat-val { font-size: var(--text-base); }
    .q-card { padding: var(--sp-3); }
}

/* --- Auth Layout ------------------------------------------------- */
.auth-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    min-height: calc(var(--df-screen-height, 100vh) - 120px);
}

.auth-aside {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: var(--sp-12) var(--sp-10);
    background: linear-gradient(135deg, var(--ink) 0%, #1a2744 100%);
    color: #fff;
}

.auth-aside .page-title { color: #fff; }
.auth-aside .page-lead { color: rgba(255, 255, 255, 0.7); }

.auth-panel {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: var(--sp-10) var(--sp-12);
    background: var(--surface);
}

/* --- Profile ----------------------------------------------------- */
.profile-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 280px;
    gap: var(--sp-4);
    margin-top: var(--sp-3);
    align-items: start;
}

.profile-main {
    display: grid;
    gap: var(--sp-4);
}

.profile-side {
    display: grid;
    gap: var(--sp-4);
    position: sticky;
    top: calc(56px + var(--sp-4));
}

.profile-fields {
    display: grid;
    gap: var(--sp-4);
}

.pf-row {
    display: grid;
    gap: var(--sp-4);
}

.pf-row-2 { grid-template-columns: 1fr 1fr; }
.pf-row-3 { grid-template-columns: 1fr 1fr 1fr; }

.field-hint {
    display: block;
    font-size: var(--text-xs);
    color: var(--ink-muted);
    margin-top: var(--sp-1);
}

.field-hint-warning { color: var(--warning); }

.field-optional {
    font-weight: 400;
    color: var(--ink-muted);
    font-size: 0.7em;
}

.profile-quick-links {
    display: grid;
    gap: var(--sp-2);
}

.btn-block { width: 100%; text-align: center; }

/* Avatar */
.avatar-zone {
    display: flex;
    align-items: center;
    gap: var(--sp-4);
}

.avatar-preview-wrap {
    flex-shrink: 0;
    width: 84px;
    height: 84px;
    border-radius: 50%;
    overflow: hidden;
    border: 2px solid var(--border);
    background: var(--surface-alt);
}

.avatar-preview-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.avatar-actions {
    display: flex;
    flex-direction: column;
    gap: var(--sp-2);
}

.avatar-hint {
    font-size: var(--text-xs);
    color: var(--ink-muted);
    line-height: var(--leading-base);
}

.avatar-status {
    font-size: var(--text-xs);
    line-height: var(--leading-base);
    color: var(--ink-muted);
    min-height: 1.25rem;
}

.avatar-status[data-tone="success"] { color: var(--color-success); }

.avatar-status[data-tone="danger"] { color: var(--color-danger); }

.avatar-pick-btn { cursor: pointer; }

/* Cropper Modal */
.cropper-modal {
    position: fixed;
    inset: 0;
    z-index: 500;
    background: rgba(12, 18, 34, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--sp-5);
}

.cropper-dialog {
    background: var(--surface);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 860px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.cropper-dialog-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 16px;
    border-bottom: 1px solid var(--border);
}

.cropper-dialog-head h3 {
    font-size: var(--text-lg);
    font-weight: 600;
}

.cropper-dialog-head p {
    margin: 0.35rem 0 0;
    color: var(--ink-muted);
    font-size: var(--text-xs);
    line-height: var(--leading-base);
}

.cropper-dialog-body {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 220px;
    gap: var(--sp-3);
    align-items: stretch;
    padding: 14px;
    background: linear-gradient(180deg, rgba(246, 248, 251, 0.96), rgba(255, 255, 255, 0.92));
}

.cropper-canvas-wrap {
    min-height: 360px;
    max-height: 480px;
    overflow: hidden;
    background: var(--surface-sunken);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    padding: 10px;
}

.cropper-canvas-wrap img {
    display: block;
    max-width: 100%;
}

.cropper-side-panel {
    display: flex;
    flex-direction: column;
    gap: var(--sp-3);
}

.cropper-side-card {
    display: flex;
    flex-direction: column;
    gap: var(--sp-2);
    padding: 10px;
    background: rgba(255, 255, 255, 0.88);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
}

.cropper-side-card small {
    color: var(--ink-muted);
    line-height: var(--leading-base);
}

.cropper-side-label {
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--ink);
}

.cropper-preview-box {
    width: 132px;
    height: 132px;
    border-radius: 50%;
    overflow: hidden;
    margin-inline: auto;
    border: 2px solid rgba(80, 148, 255, 0.22);
    background:
        radial-gradient(circle at 50% 35%, rgba(255, 255, 255, 0.72), rgba(228, 235, 244, 0.88) 56%, rgba(208, 219, 236, 0.95)),
        linear-gradient(135deg, rgba(80, 148, 255, 0.12), rgba(0, 194, 168, 0.08));
}

.cropper-preview-box .cropper-view-box,
.cropper-preview-box .cropper-face {
    border-radius: 50%;
}

.cropper-side-card input[type="range"] {
    width: 100%;
}

.cropper-dialog-foot {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--sp-3);
    padding: 12px 16px;
    border-top: 1px solid var(--border);
}

.cropper-feedback {
    font-size: var(--text-xs);
    color: var(--ink-muted);
    line-height: var(--leading-base);
}

.cropper-feedback[data-tone="danger"] { color: var(--color-danger); }

/* --- Dashboard --------------------------------------------------- */
.dash-hero {
    display: flex;
    align-items: center;
    gap: var(--sp-5);
    padding: var(--sp-5) var(--sp-6);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    margin-top: var(--sp-4);
}

.dash-hero-compact {
    gap: var(--sp-4);
    padding: 16px 18px;
    margin-top: 0;
}

.dash-hero-avatar {
    flex-shrink: 0;
    width: 72px;
    height: 72px;
    border-radius: 50%;
    overflow: hidden;
    border: 2px solid var(--border);
}

.dash-hero-compact .dash-hero-avatar {
    width: 64px;
    height: 64px;
}

.dash-hero-avatar img { width: 100%; height: 100%; object-fit: cover; display: block; }

.dash-hero-info { flex: 1; min-width: 0; }

.dash-hero-name {
    font-size: var(--text-2xl);
    font-weight: 700;
    margin-bottom: var(--sp-1);
}

.dash-hero-compact .dash-hero-name {
    font-size: var(--text-xl);
    margin-bottom: 4px;
}

.dash-hero-meta {
    display: flex;
    align-items: center;
    gap: var(--sp-3);
    font-size: var(--text-sm);
    color: var(--ink-muted);
}

.dash-hero-bio {
    margin-top: var(--sp-2);
    font-size: var(--text-sm);
    color: var(--ink-3);
    line-height: var(--leading-base);
}

.dash-hero-compact .dash-hero-bio {
    margin-top: 6px;
    font-size: var(--text-sm);
}

.dash-hero-actions {
    flex-shrink: 0;
    display: flex;
    gap: var(--sp-2);
}

.dash-grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: var(--sp-4);
    margin-top: var(--sp-4);
}

.dash-span-4  { grid-column: span 4; }
.dash-span-6  { grid-column: span 6; }
.dash-span-8  { grid-column: span 8; }
.dash-span-12 { grid-column: span 12; }

.dashboard-board {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: var(--sp-5);
    margin-top: var(--sp-4);
}

.stat-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--sp-4);
}

.stat-row-compact {
    margin-top: var(--sp-4);
    gap: var(--sp-3);
}

.stat-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--sp-4) var(--sp-5);
}

.stat-row-compact .stat-card {
    padding: 12px 14px;
}

.stat-card h3 {
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--ink-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: var(--sp-2);
}

.stat-card .value {
    font-size: var(--text-3xl);
    font-weight: 700;
    font-family: var(--font-mono);
    color: var(--ink);
}

.stat-row-compact .stat-card .value {
    font-size: var(--text-2xl);
}

.dash-section-title {
    font-size: 1rem !important;
}

.dashboard-action-grid {
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: var(--sp-2);
}

.dashboard-action-grid .quick-link-card {
    min-height: 0;
}

.workspace-panel {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xs);
}

.panel-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 16px;
    border-bottom: 1px solid var(--border);
}

.panel-body { padding: 16px; }

.quick-link-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: var(--sp-3);
}

.quick-link-card {
    display: flex;
    flex-direction: column;
    gap: var(--sp-1);
    padding: 12px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    text-decoration: none;
    color: var(--ink);
}

.quick-link-card:hover { border-color: var(--accent); background: var(--accent-soft); }
.quick-link-card strong { font-size: var(--text-base); }
.quick-link-card span { font-size: var(--text-xs); color: var(--ink-muted); }

.info-list { display: flex; flex-direction: column; }

.info-item {
    display: flex;
    justify-content: space-between;
    padding: var(--sp-2) 0;
    border-bottom: 1px solid var(--border);
    font-size: var(--text-sm);
}

.info-item:last-child { border-bottom: none; }
.info-item dt { color: var(--ink-muted); }
.info-item dd { text-align: right; font-weight: 500; }

.dashboard-meter { margin-top: var(--sp-4); padding-top: var(--sp-4); border-top: 1px solid var(--border); }
.dashboard-meter-head { display: flex; justify-content: space-between; font-size: var(--text-sm); margin-bottom: var(--sp-2); }

.account-summary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--sp-4);
}

.summary-tile {
    display: flex;
    flex-direction: column;
    gap: var(--sp-1);
    padding: 12px 14px;
    background: var(--surface-alt);
    border-radius: var(--radius);
}

.summary-label { font-size: var(--text-xs); color: var(--ink-muted); text-transform: uppercase; letter-spacing: 0.03em; }
.summary-tile strong { font-size: var(--text-2xl); font-family: var(--font-mono); }
.summary-note { font-size: var(--text-xs); color: var(--ink-muted); }

/* --- Leaderboard ------------------------------------------------- */
.rank-strip {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--sp-4);
}

.leaderboard-shell {
    display: grid;
    grid-template-columns: minmax(0, 1.35fr) 340px;
    gap: var(--sp-6);
    align-items: start;
}

.leaderboard-podium {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--sp-3);
    margin-bottom: var(--sp-4);
}

.leaderboard-podium-card {
    display: grid;
    gap: var(--sp-2);
    padding: var(--sp-4);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(246, 248, 251, 0.94));
}

.leaderboard-podium-card h3 {
    margin: 0;
    font-size: var(--text-lg);
}

.leaderboard-podium-card p,
.leaderboard-podium-card span:last-child {
    margin: 0;
    color: var(--ink-muted);
    font-size: var(--text-xs);
}

.leaderboard-podium-card strong {
    font-family: var(--font-mono);
    font-size: var(--text-3xl);
    line-height: 1;
}

.leaderboard-side-stack {
    position: sticky;
    top: 72px;
}

.leaderboard-period-tabs {
    display: inline-flex;
    gap: var(--sp-2);
    padding: 0.25rem;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: rgba(246, 248, 251, 0.92);
    margin-bottom: var(--sp-4);
}

.leaderboard-period-tabs .btn {
    border-radius: 999px;
}

.leaderboard-period-tabs .btn.is-active {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
}

.leaderboard-period-pane { display: none; }
.leaderboard-period-pane.is-active { display: block; }

.leaderboard-mini-list {
    display: grid;
    gap: var(--sp-2);
}

.leaderboard-mini-row {
    display: flex;
    justify-content: space-between;
    gap: var(--sp-3);
    padding: var(--sp-3) 0;
    border-bottom: 1px solid var(--border);
}

.leaderboard-mini-row:last-child { border-bottom: none; }

.rank-module {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--sp-5);
}

.rank-module h3 {
    font-size: var(--text-sm);
    font-weight: 600;
    margin-bottom: var(--sp-3);
    color: var(--ink-3);
}

.rank-line {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--sp-2) 0;
    border-bottom: 1px solid var(--border);
    font-size: var(--text-sm);
}

.rank-line:last-child { border-bottom: none; }

.data-number {
    font-size: var(--text-3xl);
    font-weight: 700;
    font-family: var(--font-mono);
    color: var(--ink);
}

/* --- Empty State ------------------------------------------------- */
.empty-state {
    text-align: center;
    padding: var(--sp-10) var(--sp-6);
}

.empty-state-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px; height: 48px;
    background: var(--accent-soft);
    color: var(--accent);
    font-weight: 700;
    font-size: var(--text-lg);
    border-radius: var(--radius-lg);
    margin-bottom: var(--sp-3);
}

/* --- Search Shell ------------------------------------------------ */
.search-shell {
    display: flex;
    gap: 10px;
    align-items: stretch;
}

.search-main {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 148px;
    gap: 10px;
    flex: 1 1 auto;
    min-width: 0;
}

.search-input-wrap,
.search-target-wrap {
    display: flex;
    align-items: center;
    gap: var(--sp-2);
    min-width: 0;
    padding: 0.2rem 0.38rem 0.2rem 0.68rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, 0.96);
    box-shadow: 0 10px 24px -24px rgba(15, 23, 42, 0.35);
}

.search-input-wrap .form-control,
.search-target-wrap .form-select {
    border: 0;
    background: transparent;
    box-shadow: none;
    padding-inline: 0;
}

.search-input-icon {
    color: var(--accent);
    font-size: 1.1rem;
    line-height: 1;
}

.search-target-label {
    font-size: var(--text-xs);
    color: var(--ink-muted);
    white-space: nowrap;
}

.search-target {
    width: 100%;
    min-width: 0;
}

/*.home-search-shell {*/
/*    align-items: stretch;*/
/*}*/

/*.home-search-main {*/
/*    grid-template-columns: minmax(0, 1fr) 126px;*/
/*}*/

/*.home-search-main .search-target-wrap {*/
/*    padding-left: 0.56rem;*/
/*    padding-right: 0.32rem;*/
/*}*/

/*.home-search-main .search-target-label {*/
/*    font-size: 11px;*/
/*}*/

/*.home-search-target {*/
/*    font-size: var(--text-sm);*/
/*}*/

/*.home-search-button {*/
/*    min-width: 110px;*/
/*}*/


/*这里是原先的搜索框*/


.writeup-list-summary {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--sp-3);
    margin-bottom: var(--sp-4);
}

.writeup-list-summary > div {
    display: grid;
    gap: 0.15rem;
    padding: var(--sp-3);
    border-radius: var(--radius-lg);
    background: rgba(246, 248, 251, 0.94);
    border: 1px solid var(--border);
}

.writeup-list-summary strong {
    font-family: var(--font-mono);
    font-size: var(--text-2xl);
    line-height: 1;
}

.writeup-list-summary span {
    font-size: var(--text-xs);
    color: var(--ink-muted);
}

.writeup-side-stack {
    gap: var(--sp-4);
}

.writeup-index-list {
    display: grid;
    gap: var(--sp-3);
}

.writeup-index-card {
    display: grid;
    gap: var(--sp-3);
    padding-bottom: var(--sp-3);
    border-bottom: 1px solid var(--border);
}

.writeup-index-card:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.writeup-index-head {
    display: flex;
    justify-content: space-between;
    gap: var(--sp-2);
    align-items: center;
}

.writeup-year-list {
    display: grid;
    gap: var(--sp-2);
}

.writeup-year-link {
    display: flex;
    justify-content: space-between;
    gap: var(--sp-3);
    align-items: center;
    padding: 0.65rem 0.8rem;
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.82);
    border: 1px solid transparent;
    color: inherit;
    text-decoration: none;
}

.writeup-year-link strong {
    font-family: var(--font-mono);
    font-size: var(--text-base);
}

.writeup-year-link span {
    color: var(--ink-muted);
    font-size: var(--text-xs);
}

.writeup-year-link.is-active {
    border-color: rgba(80, 148, 255, 0.35);
    background: rgba(80, 148, 255, 0.08);
}

/* --- Hash Text --------------------------------------------------- */
.hash-text {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    word-break: break-all;
    color: var(--ink-muted);
}

/* --- Learning Path Node ------------------------------------------ */
.path-node-card { position: relative; }
.path-node-card.is-completed { border-color: var(--positive); background: var(--positive-soft); }

/* --- Error Pages ------------------------------------------------- */
.error-layout {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    min-height: calc(var(--df-workspace-height, 100vh) - var(--sp-8));
    padding: var(--sp-8) 0;
    gap: var(--sp-4);
}

.error-layout .empty-state {
    width: min(100%, 42rem);
}

.error-code {
    font-size: 5rem;
    font-weight: 800;
    font-family: var(--font-mono);
    color: var(--ink-faint);
    line-height: 1;
}

/* --- Pagination -------------------------------------------------- */
nav[aria-label] > div {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--sp-1);
}

nav[aria-label] span[aria-current="page"] > span,
nav[aria-label] a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 32px;
    height: 32px;
    padding: 0 var(--sp-2);
    font-size: var(--text-sm);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    text-decoration: none;
    color: var(--ink-3);
}

nav[aria-label] span[aria-current="page"] > span {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}

nav[aria-label] a:hover { background: var(--surface-alt); }

nav[aria-label] > div > div:first-child { display: none; }

/* --- Utility Classes --------------------------------------------- */
.d-none { display: none !important; }
.d-flex { display: flex; }
.d-grid { display: grid; }
.d-block { display: block; }
.flex-column { flex-direction: column; }
.flex-row { flex-direction: row; }
.flex-wrap { flex-wrap: wrap; }
.flex-grow-1 { flex-grow: 1; }
.align-items-center { align-items: center; }
.justify-content-between { justify-content: space-between; }
.justify-content-center { justify-content: center; }

.gap-1 { gap: var(--sp-1); }
.gap-2 { gap: var(--sp-2); }
.gap-3 { gap: var(--sp-3); }
.gap-4 { gap: var(--sp-4); }

.mb-0 { margin-bottom: 0; }
.mb-2 { margin-bottom: var(--sp-2); }
.mb-3 { margin-bottom: var(--sp-3); }
.mb-4 { margin-bottom: var(--sp-4); }
.mb-5 { margin-bottom: var(--sp-5); }
.mt-2 { margin-top: var(--sp-2); }
.mt-3 { margin-top: var(--sp-3); }
.mt-4 { margin-top: var(--sp-4); }
.ms-2 { margin-left: var(--sp-2); }
.mx-auto { margin-left: auto; margin-right: auto; }
.ps-3 { padding-left: var(--sp-3); }
.w-100 { width: 100%; }
.h5 { font-size: var(--text-lg); font-weight: 600; }
.small { font-size: var(--text-xs); }
.text-secondary { color: var(--ink-muted); }
.text-success { color: var(--positive); }
.text-danger { color: var(--negative); }
.text-end { text-align: right; }
.text-center { text-align: center; }
.text-white { color: #fff; }
.text-nowrap { white-space: nowrap; }
.fw-semibold { font-weight: 600; }
.overflow-hidden { overflow: hidden; }

.row {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: var(--sp-3);
}

.g-3 { gap: var(--sp-3); }
.col-12 { grid-column: span 12; }
.col-md-6 { grid-column: span 6; }

.btn-outline-primary { background: transparent; color: var(--accent); border-color: var(--border-strong); }
.btn-outline-primary:hover { background: var(--accent-soft); border-color: var(--accent); color: var(--accent); }
.btn-outline-secondary { background: transparent; color: var(--ink-3); border-color: var(--border-strong); }
.btn-outline-secondary:hover { background: var(--surface-sunken); color: var(--ink); }
.btn-sm { padding: var(--sp-1) var(--sp-3); font-size: var(--text-xs); }

.alert-dismissible { position: relative; padding-right: var(--sp-10); }
.btn-close {
    position: absolute;
    top: var(--sp-3);
    right: var(--sp-3);
    background: none;
    border: none;
    font-size: var(--text-lg);
    color: var(--ink-3);
    cursor: pointer;
    width: 20px; height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-close::after { content: "\00D7"; }

.reading-document { max-width: 720px; }

/* --- Responsive -------------------------------------------------- */
@media (max-width: 1024px) {
    .comp-shell, .competition-shell { grid-template-columns: 1fr; }
    .comp-nav, .competition-nav-rail { display: none; }
    .comp-info, .competition-info-rail { position: static; max-height: none; overflow-y: visible; }
    .competition-sticky-bar { display: none !important; }
    .content-shell { grid-template-columns: 1fr; }
    .doc-index { grid-template-columns: 1fr; }
    .doc-rail { position: static; max-height: none; overflow-y: visible; }
    .aside-stack { position: static; max-height: none; overflow-y: visible; }
    .auth-layout { grid-template-columns: 1fr; }
    .auth-aside { display: none; }
    .df-panel-grid { grid-template-columns: 1fr; }
    .rank-strip { grid-template-columns: 1fr; }
    .profile-layout { grid-template-columns: 1fr; }
    .profile-side { position: static; }
    .dash-grid > * { grid-column: span 12 !important; }
    .dash-hero { flex-wrap: wrap; }
    .dash-hero-actions { width: 100%; }
    .dashboard-board > * { grid-column: span 12 !important; }
    .stat-row { grid-template-columns: repeat(2, 1fr); }
    .dfb-footer-inner { grid-template-columns: 1fr 1fr; }
    .dfb-footer-qrs { display: block; grid-column: span 2; }
    .hero-entries, .df-hero-entries { grid-template-columns: 1fr; }
    .df-hero { grid-template-columns: 1fr; }
    .df-hero-visual { justify-content: flex-start; }
    .df-hero-logo { width: 10rem; }
    .col-md-6 { grid-column: span 12; }
}

@media (max-width: 768px) {
    .dfb-nav { display: none; }
    .dfb-mobile-toggle { display: flex; }
    .dfb-header-inner { height: 48px; padding: 0 var(--sp-4); }
    .stat-row { grid-template-columns: 1fr 1fr; }
    .pf-row-2, .pf-row-3 { grid-template-columns: 1fr; }
    .dfb-footer { padding: var(--sp-5) var(--sp-4) var(--sp-4); }
    .dfb-footer-inner { grid-template-columns: 1fr; gap: var(--sp-4); }
    .dfb-footer-qrs { display: none; }
    .dfb-footer-link-grid,
    .dfb-footer-qr-grid { grid-template-columns: 1fr; }
    .avatar-zone { flex-direction: column; text-align: center; }
    .cropper-dialog-body { grid-template-columns: 1fr; }
    .cropper-side-panel { order: -1; }
    .cropper-preview-box { width: 104px; height: 104px; }
    .cropper-dialog-foot {
        flex-direction: column;
        align-items: stretch;
    }
    .cropper-feedback { text-align: center; }
    .search-shell { flex-direction: column; gap: var(--sp-2); }
    .search-main,
    .home-search-main,
    .leaderboard-shell,
    .leaderboard-podium,
    .writeup-list-summary,
    .writeup-shell {
        grid-template-columns: 1fr;
    }
    .search-target { max-width: none; }
    .home-search-main { grid-template-columns: 1fr; }
    .home-search-button { width: 100%; }
    .leaderboard-side-stack { position: static; }
    .df-hero { padding: var(--sp-8) 0 var(--sp-6); gap: var(--sp-4); }
    .df-hero-entries { margin-bottom: var(--sp-5); }
    .df-panel-grid { gap: var(--sp-4); margin-bottom: var(--sp-4); }
    .df-panel { padding: var(--sp-4); }
    .timeline-item,
    .workspace-panel .panel-body { padding: var(--sp-4); }
    .stat-card .value { font-size: var(--text-2xl); }
    .page-head-compact,
    header.page-head-compact { padding: var(--sp-5) 0 var(--sp-3); }
    .dash-hero,
    .dash-hero-compact { padding: 14px; }
    .dashboard-action-grid { grid-template-columns: 1fr 1fr; }

    .dfb-header.is-open .dfb-nav {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0; right: 0;
        background: var(--surface);
        border-bottom: 1px solid var(--border);
        padding: var(--sp-3);
        z-index: 200;
    }

    .dfb-header.is-open .dfb-header-actions {
        position: absolute;
        top: 100%;
        left: 0; right: 0;
        background: var(--surface);
        border-bottom: 1px solid var(--border);
        padding: var(--sp-3);
        z-index: 200;
        margin-top: -1px;
    }
}
.home-search-shell {
    width: min(640px, 100%) !important;
    align-items: stretch !important;
}

.home-search-main {
    display: grid !important;
    grid-template-columns: minmax(0, 1fr) 150px !important;
    grid-template-rows: auto auto !important;
    gap: 10px !important;
    align-items: stretch !important;
}

/* 第一块强制作为搜索输入区 */
.home-search-main > *:nth-child(1) {
    grid-column: 1 / 2 !important;
    grid-row: 1 / 2 !important;
    width: 100% !important;
    min-width: 0 !important;
}

/* 第二块强制作为下拉框区 */
.home-search-main > *:nth-child(2) {
    grid-column: 2 / 3 !important;
    grid-row: 1 / 2 !important;
    width: 100% !important;
    min-width: 0 !important;
}

/* 第三块强制作为按钮 */
.home-search-main > *:nth-child(3),
.home-search-button {
    grid-column: 1 / 3 !important;
    grid-row: 2 / 3 !important;
    width: 100% !important;
    min-width: 0 !important;
}

/* 输入框 */
.home-search-main input[type="search"],
.home-search-main input[type="text"],
.home-search-main input {
    width: 100% !important;
    height: 46px !important;
    box-sizing: border-box !important;

    border: 1px solid rgba(30, 80, 160, 0.22) !important;
    border-radius: 12px !important;
    background: rgba(255, 255, 255, 0.94) !important;

    padding: 0 14px 0 40px !important;
    font-size: 15px !important;
    outline: none !important;
}

/* 下拉框外层 */
.home-search-main .search-target-wrap {
    width: 100% !important;
    height: 46px !important;
    box-sizing: border-box !important;

    border: 1px solid rgba(30, 80, 160, 0.18) !important;
    border-radius: 12px !important;
    background: rgba(246, 249, 255, 0.95) !important;

    padding: 0 10px !important;
    display: flex !important;
    align-items: center !important;
}

/* 下拉框本体 */
.home-search-target {
    width: 100% !important;
    min-width: 0 !important;
    border: none !important;
    outline: none !important;
    background: transparent !important;
}

/* 按钮 */
.home-search-button {
    height: 50px !important;
    border-radius: 12px !important;
    font-size: 15px !important;
    font-weight: 700 !important;
}