:root {
    color-scheme: light dark;
    --bg: #f5f7fb;
    --bg-deep: #edf1f7;
    --surface: #ffffff;
    --surface-2: #f8fafc;
    --surface-3: #eef3f8;
    --line: #d6dee9;
    --line-soft: rgba(45, 67, 91, .12);
    --text: #172334;
    --text-soft: #405167;
    --muted: #64768c;
    --mint: #087f6d;
    --lime: #4f8427;
    --blue: #5269c9;
    --amber: #996500;
    --danger: #c43f4e;
    --accent-ink: #ffffff;
    --header-bg: rgba(250, 252, 255, .88);
    --nav-bg: rgba(232, 238, 246, .72);
    --hover-bg: rgba(25, 48, 74, .055);
    --panel-gradient: linear-gradient(155deg, rgba(255,255,255,.98), rgba(244,248,252,.98));
    --card-gradient: linear-gradient(145deg, rgba(255,255,255,.98), rgba(246,249,252,.98));
    --featured-gradient: linear-gradient(145deg, rgba(248,255,252,.99), rgba(244,249,252,.99));
    --control-bg: rgba(255,255,255,.9);
    --subpanel-bg: rgba(239,244,249,.78);
    --grid-line: rgba(45, 67, 91, .055);
    --radius-lg: 26px;
    --radius-md: 18px;
    --shadow: 0 24px 70px rgba(34, 52, 73, .12);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", "PingFang SC", sans-serif;
    font-synthesis: none;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #07101d;
        --bg-deep: #050b14;
        --surface: #0d1929;
        --surface-2: #111f32;
        --surface-3: #16263c;
        --line: #25384f;
        --line-soft: rgba(146, 173, 204, .14);
        --text: #edf5ff;
        --text-soft: #b7c6d8;
        --muted: #8296ae;
        --mint: #68ead0;
        --lime: #a0ed6d;
        --blue: #7898ff;
        --amber: #ffc96d;
        --danger: #ff8e98;
        --accent-ink: #06110d;
        --header-bg: rgba(7,16,29,.88);
        --nav-bg: rgba(17,31,50,.78);
        --hover-bg: rgba(255,255,255,.05);
        --panel-gradient: linear-gradient(155deg, rgba(18,34,54,.96), rgba(8,18,31,.97));
        --card-gradient: linear-gradient(145deg, rgba(17,31,50,.95), rgba(9,20,34,.96));
        --featured-gradient: linear-gradient(145deg, rgba(18,37,54,.97), rgba(9,21,34,.98));
        --control-bg: rgba(12,25,42,.88);
        --subpanel-bg: rgba(4,12,21,.42);
        --grid-line: rgba(225,240,255,.05);
        --shadow: 0 32px 90px rgba(0, 0, 0, .28);
    }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 90px; }
body { min-width: 300px; margin: 0; overflow-x: hidden; color: var(--text); background: var(--bg); font-size: 16px; line-height: 1.55; -webkit-font-smoothing: antialiased; }
button, input { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
a { color: inherit; }
img { max-width: 100%; }
::selection { color: var(--accent-ink); background: var(--mint); }

.sr-only { position: absolute !important; width: 1px !important; height: 1px !important; padding: 0 !important; margin: -1px !important; overflow: hidden !important; clip: rect(0,0,0,0) !important; white-space: nowrap !important; border: 0 !important; }
.skip-link { position: fixed; top: 10px; left: 10px; z-index: 100; padding: 10px 14px; border-radius: 10px; color: var(--accent-ink); background: var(--mint); transform: translateY(-160%); transition: transform .2s; }
.skip-link:focus { transform: translateY(0); }

.site-grid {
    position: fixed;
    inset: 0;
    z-index: -3;
    pointer-events: none;
    background:
        radial-gradient(circle at 13% 9%, rgba(87, 231, 204, .12), transparent 26rem),
        radial-gradient(circle at 89% 17%, rgba(89, 115, 255, .1), transparent 29rem),
        radial-gradient(circle at 52% 96%, rgba(139, 226, 100, .06), transparent 31rem),
        var(--bg);
}
.site-grid::after {
    position: absolute;
    inset: 0;
    content: "";
    opacity: .18;
    background-image: linear-gradient(var(--grid-line) 1px, transparent 1px), linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
    background-size: 38px 38px;
    mask-image: linear-gradient(to bottom, #000 0, transparent 66%);
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 30;
    width: 100%;
    min-height: 74px;
    border-bottom: 1px solid var(--line-soft);
    background: var(--header-bg);
    box-shadow: 0 8px 28px rgba(35, 52, 73, .045);
    backdrop-filter: blur(18px) saturate(130%);
    -webkit-backdrop-filter: blur(18px) saturate(130%);
}
.site-header-inner {
    display: flex;
    width: min(1240px, calc(100% - 40px));
    min-height: 74px;
    margin: 0 auto;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
}
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.brand img { width: 42px; height: 42px; filter: drop-shadow(0 8px 18px rgba(104,234,208,.14)); }
.brand > span { display: grid; gap: 3px; }
.brand strong { max-width: 230px; overflow: hidden; font-size: 1rem; letter-spacing: -.01em; text-overflow: ellipsis; white-space: nowrap; }
.brand small { color: var(--mint); font: 700 .68rem/1 ui-monospace, SFMono-Regular, Consolas, monospace; letter-spacing: .12em; }
.site-nav { display: flex; padding: 5px; align-items: center; gap: 3px; border: 1px solid var(--line-soft); border-radius: 15px; background: var(--nav-bg); }
.site-nav a { display: inline-flex; min-height: 38px; padding: 0 14px; align-items: center; justify-content: center; border-radius: 10px; color: var(--text-soft); font-size: .9rem; font-weight: 600; text-decoration: none; transition: color .2s, background .2s, transform .2s, box-shadow .2s; }
.site-nav a:hover { color: var(--text); background: var(--surface); box-shadow: 0 5px 16px rgba(35,52,73,.08); transform: translateY(-1px); }
.site-nav .admin-entry { margin-left: 4px; border: 0; color: var(--accent-ink); background: linear-gradient(105deg, var(--mint), var(--lime)); box-shadow: 0 7px 18px rgba(8,127,109,.16); }
.site-nav .admin-entry:hover { color: var(--accent-ink); background: linear-gradient(105deg, var(--mint), var(--lime)); filter: brightness(1.04); }
.site-nav a:focus-visible, .brand:focus-visible { outline: 3px solid color-mix(in srgb, var(--mint) 35%, transparent); outline-offset: 3px; }

main { width: min(1240px, calc(100% - 40px)); margin: 0 auto; }
.hero-shell { display: grid; grid-template-columns: minmax(0, 1.22fr) minmax(360px, .78fr); gap: clamp(40px, 8vw, 112px); min-height: 480px; padding: clamp(62px, 8vw, 98px) 0 72px; align-items: center; }
.overline, .section-index { margin: 0 0 18px; color: var(--mint); font: 700 .75rem/1.2 ui-monospace, SFMono-Regular, Consolas, monospace; letter-spacing: .15em; text-transform: uppercase; }
.overline { display: flex; align-items: center; gap: 10px; }
.overline span { width: 26px; height: 1px; background: var(--mint); box-shadow: 0 0 12px var(--mint); }
.hero-copy h1 { margin: 0; font-size: clamp(2.55rem, 4.6vw, 4.25rem); line-height: 1.03; letter-spacing: -.05em; }
.hero-copy h1 em { color: transparent; background: linear-gradient(100deg, var(--mint), var(--lime)); background-clip: text; font-style: normal; }
.hero-description { max-width: 570px; margin: 24px 0 0; color: var(--text-soft); font-size: clamp(1rem, 1.25vw, 1.12rem); line-height: 1.75; }

.signal-panel { position: relative; padding: 22px; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius-lg); background: var(--panel-gradient); box-shadow: var(--shadow); }
.signal-panel::before { position: absolute; top: -100px; right: -70px; width: 230px; height: 230px; content: ""; border-radius: 50%; background: rgba(103,234,208,.09); filter: blur(8px); }
.signal-panel::after { position: absolute; inset: 8px; pointer-events: none; content: ""; border: 1px solid var(--line-soft); border-radius: 20px; }
.signal-head { position: relative; z-index: 1; display: flex; align-items: center; justify-content: space-between; color: var(--muted); font: 700 .72rem/1 ui-monospace, monospace; letter-spacing: .13em; }
.live-badge { display: flex; align-items: center; gap: 7px; padding: 7px 9px; border: 1px solid rgba(104,234,208,.18); border-radius: 999px; color: var(--mint); letter-spacing: .04em; background: rgba(104,234,208,.06); }
.live-badge i, .rule-state i { width: 6px; height: 6px; border-radius: 50%; background: var(--mint); box-shadow: 0 0 0 4px rgba(104,234,208,.09), 0 0 12px rgba(104,234,208,.75); animation: pulse 2s ease-in-out infinite; }
.signal-wave { position: relative; z-index: 1; display: flex; height: 128px; margin: 30px 0 26px; align-items: center; justify-content: space-between; gap: 7px; }
.signal-wave::before { position: absolute; right: 0; left: 0; height: 1px; content: ""; background: linear-gradient(90deg, transparent, rgba(104,234,208,.45), transparent); box-shadow: 0 0 16px rgba(104,234,208,.2); }
.signal-wave i { width: 5px; border-radius: 999px; background: linear-gradient(to top, rgba(104,234,208,.15), var(--mint), rgba(160,237,109,.2)); box-shadow: 0 0 13px rgba(104,234,208,.13); transform-origin: center; animation: wave 2.3s ease-in-out infinite alternate; }
.signal-wave i:nth-child(1), .signal-wave i:nth-child(12) { height: 15%; }
.signal-wave i:nth-child(2), .signal-wave i:nth-child(11) { height: 30%; animation-delay: -.7s; }
.signal-wave i:nth-child(3), .signal-wave i:nth-child(10) { height: 56%; animation-delay: -1.3s; }
.signal-wave i:nth-child(4), .signal-wave i:nth-child(9) { height: 82%; animation-delay: -.35s; }
.signal-wave i:nth-child(5), .signal-wave i:nth-child(8) { height: 44%; animation-delay: -1.7s; }
.signal-wave i:nth-child(6), .signal-wave i:nth-child(7) { height: 96%; animation-delay: -.9s; }
.signal-stats { position: relative; z-index: 1; display: grid; grid-template-columns: repeat(3, 1fr); margin: 0; border-top: 1px solid var(--line-soft); border-bottom: 1px solid var(--line-soft); }
.signal-stats div { padding: 18px 10px; }
.signal-stats div + div { border-left: 1px solid var(--line-soft); }
.signal-stats dt { color: var(--text); font: 700 1.3rem/1 ui-monospace, monospace; }
.signal-stats dd { margin: 7px 0 0; color: var(--muted); font-size: .8rem; }
.signal-panel > p { position: relative; z-index: 1; display: flex; margin: 16px 0 1px; justify-content: space-between; color: var(--muted); font-size: .78rem; }
.signal-panel > p time { color: var(--text-soft); }

.announcement { display: grid; grid-template-columns: auto 1fr auto; gap: 16px; padding: 16px 18px; align-items: center; border: 1px solid rgba(120,152,255,.2); border-radius: 15px; background: linear-gradient(90deg, rgba(120,152,255,.07), rgba(104,234,208,.035)); }
.announcement > span { padding: 6px 9px; border-radius: 7px; color: var(--blue); background: color-mix(in srgb, var(--blue) 12%, transparent); font: 700 .74rem/1 ui-monospace, monospace; letter-spacing: .05em; }
.announcement p { margin: 0; color: var(--text-soft); font-size: .9rem; line-height: 1.6; }
.announcement i { color: var(--mint); font-style: normal; }

.rule-workspace { padding: 110px 0 82px; }
.section-title-row { display: grid; grid-template-columns: 1fr minmax(280px, 420px); gap: 50px; align-items: end; }
.section-title-row h2, .how-it-works h2 { margin: 0; font-size: clamp(1.8rem, 2.6vw, 2.5rem); line-height: 1.14; letter-spacing: -.035em; }
.section-title-row > p { margin: 0; color: var(--muted); font-size: .98rem; line-height: 1.75; }

.search-panel { display: grid; grid-template-columns: 1fr auto; gap: 10px; margin-top: 38px; padding: 8px; border: 1px solid var(--line); border-radius: 18px; background: var(--control-bg); box-shadow: 0 16px 50px rgba(34,52,73,.08); }
.search-box { position: relative; display: flex; align-items: center; }
.search-box > span:first-child { width: 18px; height: 18px; margin-left: 14px; border: 1.8px solid #6f849b; border-radius: 50%; }
.search-box > span:first-child::after { position: absolute; width: 7px; height: 2px; margin: 14px 0 0 -2px; content: ""; background: #6f849b; transform: rotate(45deg); }
.search-box input { width: 100%; min-height: 48px; padding: 0 16px; border: 0; outline: 0; color: var(--text); background: transparent; }
.search-box input::placeholder { color: var(--muted); }
.search-panel button { min-width: 142px; padding: 0 17px; border: 0; border-radius: 12px; color: var(--accent-ink); background: linear-gradient(105deg, var(--mint), var(--lime)); cursor: pointer; font-weight: 750; transition: transform .2s, filter .2s; }
.search-panel button:hover { filter: brightness(1.06); transform: translateY(-1px); }

.filter-row { display: flex; gap: 8px; margin: 18px 0 0; padding-bottom: 5px; overflow-x: auto; scrollbar-width: thin; }
.filter-chip { display: inline-flex; flex: 0 0 auto; align-items: center; gap: 8px; padding: 9px 12px; border: 1px solid var(--line-soft); border-radius: 999px; color: var(--muted); background: var(--control-bg); font-size: .84rem; text-decoration: none; transition: color .2s, border-color .2s, background .2s; }
.filter-chip span { display: grid; min-width: 19px; height: 19px; padding: 0 5px; place-items: center; border-radius: 999px; background: var(--hover-bg); font: 700 .72rem/1 ui-monospace, monospace; }
.filter-chip:hover, .filter-chip.active { border-color: rgba(104,234,208,.34); color: var(--mint); background: rgba(104,234,208,.07); }
.result-meta { display: flex; margin: 32px 0 16px; align-items: center; justify-content: space-between; }
.result-meta p { margin: 0; color: var(--muted); font-size: .86rem; }
.result-meta p strong { color: var(--text); font: 700 .9rem/1 ui-monospace, monospace; }
.result-meta a { color: var(--mint); font-size: .84rem; text-underline-offset: 4px; }

.rule-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.rule-card { position: relative; display: flex; min-width: 0; padding: 22px; flex-direction: column; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius-lg); background: var(--card-gradient); box-shadow: 0 18px 48px rgba(34,52,73,.08); transition: border-color .25s, transform .25s, box-shadow .25s; }
.rule-card::before { position: absolute; top: -90px; right: -80px; width: 180px; height: 180px; content: ""; border-radius: 50%; background: rgba(104,234,208,.045); transition: background .25s, transform .4s; }
.rule-card:hover { border-color: color-mix(in srgb, var(--mint) 38%, transparent); box-shadow: 0 24px 58px rgba(34,52,73,.13); transform: translateY(-3px); }
.rule-card:hover::before { background: rgba(104,234,208,.1); transform: scale(1.15); }
.rule-card.featured { border-color: color-mix(in srgb, var(--mint) 28%, var(--line)); background: var(--featured-gradient); }
.card-topline, .card-footer { position: relative; z-index: 1; display: flex; align-items: center; justify-content: space-between; }
.card-topline > span:first-child { color: var(--muted); font: 700 .74rem/1 ui-monospace, monospace; letter-spacing: .08em; }
.rule-state { display: flex; align-items: center; gap: 8px; color: var(--mint); font-size: .76rem; }
.rule-state i { width: 5px; height: 5px; }
.rule-state.warning { color: var(--amber); }
.rule-state.warning i { background: var(--amber); box-shadow: 0 0 0 4px rgba(255,201,109,.08), 0 0 12px rgba(255,201,109,.55); }
.rule-heading { position: relative; z-index: 1; display: flex; gap: 14px; margin-top: 24px; align-items: center; }
.rule-monogram { display: grid; width: 52px; height: 52px; flex: 0 0 auto; place-items: center; border: 1px solid rgba(104,234,208,.16); border-radius: 16px; color: var(--mint); background: linear-gradient(145deg, rgba(104,234,208,.1), rgba(120,152,255,.06)); font: 800 1.25rem/1 ui-monospace, monospace; }
.rule-labels { display: flex; gap: 7px; }
.rule-labels span { color: var(--muted); font: 700 .72rem/1 ui-monospace, monospace; letter-spacing: .04em; text-transform: uppercase; }
.rule-labels .featured-label { color: var(--lime); }
.rule-heading h3 { margin: 7px 0 0; font-size: 1.2rem; letter-spacing: -.02em; }
.rule-description { position: relative; z-index: 1; min-height: 52px; margin: 20px 0; color: var(--text-soft); font-size: .93rem; line-height: 1.72; }
.rule-details { position: relative; z-index: 1; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); margin: 0; padding: 15px 0; border-top: 1px solid var(--line-soft); border-bottom: 1px solid var(--line-soft); gap: 14px 18px; }
.rule-details div { min-width: 0; }
.rule-details dt { color: var(--muted); font-size: .75rem; }
.rule-details dd { margin: 5px 0 0; overflow: hidden; color: var(--text); font-size: .82rem; text-overflow: ellipsis; white-space: nowrap; }
.copy-box { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 8px; margin-top: 18px; }
.copy-box label { min-width: 0; }
.copy-box input { width: 100%; min-height: 43px; padding: 0 12px; overflow: hidden; border: 1px solid var(--line); border-radius: 11px; outline: 0; color: var(--muted); background: var(--surface-2); font: .75rem/1.2 ui-monospace, SFMono-Regular, Consolas, monospace; text-overflow: ellipsis; }
.copy-box input:focus { border-color: rgba(104,234,208,.45); color: var(--text-soft); }
.copy-box button { display: flex; min-width: 110px; padding: 0 13px; align-items: center; justify-content: center; gap: 8px; border: 1px solid color-mix(in srgb, var(--mint) 28%, transparent); border-radius: 11px; color: var(--mint); background: color-mix(in srgb, var(--mint) 7%, transparent); cursor: pointer; font-size: .84rem; font-weight: 700; transition: color .2s, background .2s, transform .2s; }
.copy-box button i { position: relative; width: 12px; height: 12px; border: 1px solid currentColor; border-radius: 2px; }
.copy-box button i::before { position: absolute; top: -4px; left: -4px; width: 8px; height: 8px; content: ""; border: 1px solid currentColor; border-radius: 2px; background: var(--surface); }
.copy-box button:hover, .copy-box button.copied { color: var(--accent-ink); background: var(--mint); transform: translateY(-1px); }
.copy-box button:hover i::before, .copy-box button.copied i::before { background: var(--mint); }
.card-footer { margin-top: 15px; color: var(--muted); font-size: .76rem; }
.card-footer a { color: var(--text-soft); text-decoration: none; }
.card-footer a:hover { color: var(--mint); }

.rule-target-list { position: relative; z-index: 1; display: grid; gap: 10px; margin-top: 18px; }.rule-target-list-head { display: flex; align-items: center; justify-content: space-between; color: var(--muted); font-size: .76rem; }.rule-target-list-head > span { color: var(--text-soft); font-weight: 700; }.rule-target-list-head small { font-size: .72rem; }.rule-target { padding: 13px; border: 1px solid var(--line); border-radius: 13px; background: var(--subpanel-bg); }.rule-target.warning { border-color: color-mix(in srgb, var(--amber) 28%, transparent); background: color-mix(in srgb, var(--amber) 4%, transparent); }.rule-target-meta { display: flex; align-items: center; justify-content: space-between; gap: 12px; }.rule-target-meta > div { min-width: 0; }.rule-target-meta strong, .rule-target-meta span { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }.rule-target-meta strong { color: var(--text); font-size: .86rem; }.rule-target-meta span { margin-top: 5px; color: var(--muted); font-size: .75rem; }.rule-target-meta > small { flex: 0 0 auto; color: var(--muted); font: .72rem/1 ui-monospace, monospace; }.rule-target.warning .rule-target-meta > small { color: var(--amber); }.target-copy-box { margin-top: 11px; }.target-test-link { display: inline-flex; margin-top: 9px; color: var(--muted); font-size: .76rem; text-decoration: none; }.target-test-link:hover { color: var(--mint); }

.empty-state { padding: clamp(46px, 8vw, 82px) 22px; border: 1px dashed var(--line); border-radius: var(--radius-lg); text-align: center; background: var(--control-bg); }
.empty-mark { display: flex; width: 80px; height: 64px; margin: 0 auto 24px; align-items: center; justify-content: center; gap: 6px; border: 1px solid var(--line); border-radius: 21px; background: var(--surface); transform: rotate(-3deg); }
.empty-mark span { width: 5px; border-radius: 4px; background: var(--mint); opacity: .55; }
.empty-mark span:nth-child(1) { height: 15px; }.empty-mark span:nth-child(2) { height: 31px; }.empty-mark span:nth-child(3) { height: 21px; }
.empty-state .section-index { margin-bottom: 9px; }
.empty-state h3 { margin: 0; font-size: 1.4rem; }
.empty-state > p:not(.section-index) { max-width: 540px; margin: 12px auto 0; color: var(--muted); font-size: .94rem; line-height: 1.7; }
.empty-action { display: inline-flex; margin-top: 22px; padding: 10px 15px; border: 1px solid rgba(104,234,208,.24); border-radius: 10px; color: var(--mint); text-decoration: none; background: rgba(104,234,208,.05); }
.pagination { display: flex; margin-top: 28px; align-items: center; justify-content: center; gap: 20px; }
.pagination span { color: var(--muted); font: 700 .76rem/1 ui-monospace, monospace; letter-spacing: .08em; }
.pagination a { padding: 9px 13px; border: 1px solid var(--line); border-radius: 10px; color: var(--text-soft); font-size: .84rem; text-decoration: none; }
.pagination a:hover { border-color: rgba(104,234,208,.4); color: var(--mint); }

.how-it-works { display: grid; grid-template-columns: .8fr 1.4fr; gap: 70px; padding: 82px 0 120px; border-top: 1px solid var(--line-soft); }
.how-it-works ol { display: grid; margin: 0; padding: 0; list-style: none; }
.how-it-works li { display: flex; gap: 18px; padding: 20px 0; border-bottom: 1px solid var(--line-soft); }
.how-it-works li:first-child { padding-top: 0; }
.how-it-works li > span { display: grid; width: 32px; height: 32px; flex: 0 0 auto; place-items: center; border: 1px solid var(--line); border-radius: 10px; color: var(--mint); background: color-mix(in srgb, var(--mint) 5%, transparent); font: 700 .78rem/1 ui-monospace, monospace; }
.how-it-works strong { font-size: 1rem; }
.how-it-works li p { margin: 7px 0 0; color: var(--muted); font-size: .9rem; line-height: 1.65; }

.site-footer { display: flex; width: min(1240px, calc(100% - 40px)); margin: 0 auto; padding: 34px 0 44px; align-items: flex-end; justify-content: space-between; gap: 40px; border-top: 1px solid var(--line-soft); }
.footer-brand { display: flex; gap: 12px; align-items: center; }
.footer-brand img { width: 34px; height: 34px; }
.footer-brand strong { font-size: .92rem; }
.footer-brand p, .footer-notes p { margin: 4px 0 0; color: var(--muted); font-size: .78rem; line-height: 1.55; }
.footer-notes { max-width: 560px; text-align: right; }

.toast { position: fixed; right: 22px; bottom: 22px; z-index: 80; display: flex; padding: 13px 16px; align-items: center; gap: 10px; border: 1px solid color-mix(in srgb, var(--mint) 30%, transparent); border-radius: 13px; color: var(--text); background: color-mix(in srgb, var(--surface) 94%, transparent); box-shadow: 0 18px 50px rgba(34,52,73,.18); backdrop-filter: blur(14px); font-size: .86rem; opacity: 0; pointer-events: none; transform: translateY(16px); transition: opacity .2s, transform .2s; }
.toast.visible { opacity: 1; transform: translateY(0); }
.toast-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--mint); box-shadow: 0 0 0 4px rgba(104,234,208,.08); }
.toast[data-type="error"] { border-color: color-mix(in srgb, var(--danger) 32%, transparent); color: var(--danger); }
.toast[data-type="error"] .toast-dot { background: var(--danger); }
.copy-fallback { position: fixed; left: -9999px; opacity: 0; }

.maintenance-page .site-header { display: none; }
.maintenance-shell { display: flex; width: min(920px, calc(100% - 34px)); min-height: 100vh; padding: 70px 0; align-items: flex-start; justify-content: center; flex-direction: column; }
.maintenance-shell h1 { margin: 0; font-size: clamp(2.5rem, 5.2vw, 4.2rem); line-height: 1.02; letter-spacing: -.05em; }
.maintenance-shell > p:not(.overline) { max-width: 580px; margin: 26px 0; color: var(--muted); font-size: 1.05rem; line-height: 1.8; }
.maintenance-shell > a { display: inline-flex; padding: 12px 16px; gap: 12px; border: 1px solid rgba(104,234,208,.25); border-radius: 12px; color: var(--mint); background: rgba(104,234,208,.05); text-decoration: none; }
.maintenance-orbit { position: absolute; top: 50%; right: max(5vw, calc((100vw - 1240px)/2)); width: min(34vw, 420px); aspect-ratio: 1; border: 1px solid rgba(104,234,208,.11); border-radius: 50%; transform: translateY(-50%); }
.maintenance-orbit::before, .maintenance-orbit::after { position: absolute; inset: 14%; content: ""; border: 1px solid rgba(120,152,255,.13); border-radius: 50%; }
.maintenance-orbit::after { inset: 34%; background: radial-gradient(circle, rgba(104,234,208,.13), transparent 60%); }
.maintenance-orbit span { position: absolute; top: 50%; left: 50%; width: 7px; height: 7px; border-radius: 50%; background: var(--mint); box-shadow: 0 0 20px var(--mint); transform-origin: 0 0; animation: orbit 9s linear infinite; }
.maintenance-orbit span:nth-child(2) { animation-duration: 13s; animation-direction: reverse; }.maintenance-orbit span:nth-child(3) { animation-duration: 18s; }

@keyframes pulse { 50% { opacity: .42; transform: scale(.8); } }
@keyframes wave { to { transform: scaleY(.5); opacity: .58; } }
@keyframes orbit { from { transform: rotate(0) translateX(175px); } to { transform: rotate(360deg) translateX(175px); } }

@media (max-width: 920px) {
    .hero-shell { grid-template-columns: 1fr; gap: 46px; padding-top: 74px; }
    .hero-copy { max-width: 700px; }
    .signal-panel { max-width: 640px; }
    .section-title-row, .how-it-works { grid-template-columns: 1fr; gap: 28px; }
    .rule-grid { grid-template-columns: 1fr; }
    .how-it-works ol { max-width: 720px; }
    .maintenance-orbit { opacity: .4; }
}

@media (max-width: 680px) {
    .site-header-inner, main, .site-footer { width: min(100% - 24px, 560px); }
    .site-header, .site-header-inner { min-height: 66px; }
    .brand img { width: 38px; height: 38px; }
    .brand strong { max-width: 145px; font-size: .94rem; }
    .brand small { display: none; }
    .site-nav { padding: 0; border: 0; background: transparent; }
    .site-nav > a:not(.admin-entry) { display: none; }
    .site-nav .admin-entry { min-height: 38px; margin: 0; padding: 0 12px; font-size: .82rem; }
    .hero-shell { min-height: 0; padding: 54px 0 50px; }
    .hero-copy h1 { font-size: clamp(2.45rem, 12vw, 3.55rem); }
    .hero-description { margin-top: 20px; font-size: 1rem; }
    .signal-panel { padding: 18px; border-radius: 21px; }
    .signal-wave { height: 92px; margin: 24px 0 18px; }
    .signal-stats div { padding: 14px 7px; }
    .signal-stats dt { font-size: 1rem; }
    .signal-stats dd { font-size: .74rem; }
    .announcement { grid-template-columns: auto 1fr; margin-top: 10px; }
    .announcement i { display: none; }
    .rule-workspace { padding: 82px 0 64px; }
    .section-title-row > p { font-size: .94rem; }
    .search-panel { grid-template-columns: 1fr; padding: 7px; }
    .search-panel button { min-height: 44px; }
    .rule-card { padding: 18px; border-radius: 21px; }
    .rule-description { min-height: auto; }
    .copy-box { grid-template-columns: 1fr; }
    .copy-box button { min-height: 43px; }
    .rule-target { padding: 12px; }
    .card-footer { margin-top: 13px; }
    .how-it-works { padding-bottom: 84px; }
    .site-footer { align-items: flex-start; flex-direction: column; }
    .footer-notes { text-align: left; }
    .toast { right: 12px; bottom: 12px; left: 12px; justify-content: center; }
    .maintenance-orbit { right: -130px; width: 340px; }
}

@media (max-width: 390px) {
    .rule-details { grid-template-columns: 1fr; }
    .rule-heading { align-items: flex-start; }
    .rule-monogram { width: 45px; height: 45px; }
    .card-footer { align-items: flex-start; flex-direction: column; gap: 8px; }
    .rule-target-meta { align-items: flex-start; flex-direction: column; gap: 8px; }
    .signal-panel > p { flex-direction: column; gap: 5px; }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}