/* ============================================================
   Favicon Checker - scoped under .fck / .fck-* (rebuilt 2026-10-07)
   Shared header, footer, info cards, FAQ and related pills come from custom_styles.css.
   Icon-tools blue accent. Single colours, no gradients, no thick side borders.
   Light default, dark via [data-theme="dark"].
   ============================================================ */
.fck {
    --fck-accent: #3399cc;
    --fck-accent-strong: #237a9f;
    --fck-accent-soft: rgba(51, 153, 204, 0.09);
    --fck-accent-line: rgba(51, 153, 204, 0.45);
    --fck-go: #237a9f;
    --fck-go-hover: #1b6183;
    --fck-card: var(--bg-elevated, #fff);
    --fck-sunk: var(--card-tertiary, #f1f5f9);
    --fck-open: var(--card-secondary, #f8f9fa);
    --fck-line: var(--border-color, #e2e8f0);
    --fck-text-1: var(--text-primary, #1e293b);
    --fck-text-2: var(--text-secondary, #555);
    --fck-muted: var(--text-muted, #64748b);
    --fck-checker: #e5e7eb;
    --fck-checker-bg: #fff;
    --fck-ok: #2f855a;
    --fck-ok-soft: rgba(51, 153, 102, 0.1);
    --fck-ok-line: rgba(51, 153, 102, 0.35);
    --fck-warn: #b45309;
    --fck-warn-soft: rgba(217, 119, 6, 0.1);
    --fck-warn-line: rgba(217, 119, 6, 0.35);
    --fck-bad: #c23b3b;
    --fck-bad-soft: rgba(230, 78, 78, 0.09);
    --fck-bad-line: rgba(230, 78, 78, 0.38);
    --fck-code-bg: #f6f8fa;
}
[data-theme="dark"] .fck {
    --fck-accent: #5cb8e6;
    --fck-accent-strong: #8fd0f0;
    --fck-accent-soft: rgba(92, 184, 230, 0.12);
    --fck-accent-line: rgba(92, 184, 230, 0.45);
    --fck-go: #237a9f;
    --fck-go-hover: #2b8bb5;
    --fck-sunk: #172033;
    --fck-open: #1a2438;
    --fck-checker: #334155;
    --fck-checker-bg: #1e293b;
    --fck-ok: #4ade80;
    --fck-ok-soft: rgba(74, 222, 128, 0.1);
    --fck-ok-line: rgba(74, 222, 128, 0.35);
    --fck-warn: #fbbf24;
    --fck-warn-soft: rgba(251, 191, 36, 0.1);
    --fck-warn-line: rgba(251, 191, 36, 0.35);
    --fck-bad: #f87171;
    --fck-bad-soft: rgba(248, 113, 113, 0.1);
    --fck-bad-line: rgba(248, 113, 113, 0.4);
    --fck-code-bg: #0f172a;
}

.fck.tool-container { max-width: 1000px; margin: 0 auto; padding: 2rem; box-sizing: border-box; }
.fck [hidden] { display: none !important; }
.fck .fck-main { background: none; border: none; box-shadow: none; border-radius: 0; overflow: visible; padding: 0; }
.fck button { font: inherit; }
.fck code { font-size: 0.86em; padding: 0.05rem 0.35rem; border-radius: 5px; background: var(--fck-sunk); overflow-wrap: anywhere; }
.fck .fck-sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.fck .fck-muted { color: var(--fck-muted); font-size: 0.82rem; }

/* ---------- title ---------- */
.fck .tool-header { text-align: center; margin-bottom: 1.75rem; }
.fck .tool-title-row { display: flex; align-items: center; justify-content: center; gap: 0.9rem; margin-bottom: 0.9rem; }
.fck .fck-title-icon {
    width: 56px; height: 56px; border-radius: 16px; background: var(--fck-accent); color: #fff;
    display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
[data-theme="dark"] .fck .fck-title-icon { color: #0b1e33; }
.fck .fck-title-icon svg { width: 30px; height: 30px; display: block; }
.fck .tool-title { margin: 0; font-size: 2rem; font-weight: 700; color: var(--fck-accent); line-height: 1.2; }
.fck .tool-description { max-width: 800px; margin: 0 auto; font-size: 1.05rem; line-height: 1.65; color: var(--fck-text-2); }
.fck .tool-description a { color: var(--fck-accent-strong); font-weight: 500; }
[data-theme="dark"] .fck .tool-description a { color: var(--fck-accent); }

/* ---------- error ---------- */
.fck .fck-error {
    display: flex; align-items: flex-start; gap: 0.7rem; margin: 0 0 1rem; padding: 0.9rem 1rem;
    border-radius: 12px; border: 1px solid var(--fck-bad-line); background: var(--fck-bad-soft); color: var(--fck-text-1);
}
.fck .fck-error > svg { width: 20px; height: 20px; color: #e64e4e; flex-shrink: 0; margin-top: 2px; }
.fck .fck-error > div { flex: 1; min-width: 0; }
.fck .fck-error p { margin: 0; font-size: 0.92rem; line-height: 1.55; overflow-wrap: anywhere; }
.fck .fck-error p + p { margin-top: 0.3rem; color: var(--fck-muted); font-size: 0.86rem; }
.fck .fck-error a { color: var(--fck-bad); font-weight: 600; }
.fck .fck-x {
    display: inline-flex; align-items: center; justify-content: center; width: 30px; height: 30px; flex-shrink: 0;
    border: none; border-radius: 8px; background: none; color: var(--fck-muted); cursor: pointer; padding: 0;
}
.fck .fck-x:hover { background: rgba(100, 116, 139, 0.12); color: var(--fck-text-1); }
.fck .fck-x svg { width: 17px; height: 17px; }

/* ---------- cards + shared ---------- */
.fck .fck-card {
    background: var(--fck-card); border: 1px solid var(--fck-line); border-radius: 20px;
    padding: 1.25rem; box-shadow: var(--shadow-sm); margin-bottom: 1.25rem; min-width: 0;
}
.fck .fck-h { display: inline-flex; align-items: center; gap: 0.45rem; margin: 0; font-size: 0.98rem; font-weight: 700; color: var(--fck-text-1); }
.fck .fck-h svg { width: 18px; height: 18px; color: var(--fck-accent); flex-shrink: 0; }
.fck .fck-hint { margin: 0.55rem 0 0; font-size: 0.8rem; line-height: 1.5; color: var(--fck-muted); overflow-wrap: anywhere; }
.fck .fck-hint a { color: var(--fck-accent-strong); font-weight: 600; }
[data-theme="dark"] .fck .fck-hint a { color: var(--fck-accent); }
.fck .fck-hint-top { margin: 0 0 0.6rem; }
.fck .fck-caption { display: inline-flex; align-items: center; gap: 0.35rem; margin: 0; font-size: 0.7rem; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; color: var(--fck-muted); }
.fck .fck-caption svg { width: 14px; height: 14px; }
.fck .fck-checker {
    background-color: var(--fck-checker-bg);
    background-image:
        linear-gradient(45deg, var(--fck-checker) 25%, transparent 25%),
        linear-gradient(-45deg, var(--fck-checker) 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, var(--fck-checker) 75%),
        linear-gradient(-45deg, transparent 75%, var(--fck-checker) 75%);
    background-size: 12px 12px;
    background-position: 0 0, 0 6px, 6px -6px, -6px 0;
}

/* ---------- buttons ---------- */
.fck .fck-btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 0.45rem; width: auto;
    min-height: 44px; padding: 0.6rem 1.1rem; margin: 0; border-radius: 12px; border: 1px solid transparent;
    font-size: 0.95rem; font-weight: 700; cursor: pointer; white-space: nowrap; text-decoration: none; box-shadow: none;
    transition: background 0.15s, border-color 0.15s, color 0.15s;
}
.fck .fck-btn svg { width: 18px; height: 18px; flex-shrink: 0; }
.fck .fck-go { background: var(--fck-go); color: #fff; }
.fck .fck-go:hover:not(:disabled) { background: var(--fck-go-hover); color: #fff; }
.fck .fck-go:disabled { opacity: 0.6; cursor: progress; }
.fck .fck-btn-lg { min-height: 52px; padding: 0.65rem 1.4rem; font-size: 1rem; }
.fck .fck-btn-sm { min-height: 34px; padding: 0.35rem 0.75rem; font-size: 0.82rem; border-radius: 9px; }
.fck .fck-btn-sm svg { width: 15px; height: 15px; }
.fck .fck-btn-ghost { background: var(--fck-sunk); color: var(--fck-text-2); border-color: var(--fck-line); }
.fck .fck-btn-ghost:hover:not(:disabled) { color: var(--fck-text-1); border-color: var(--fck-accent-line); }
.fck .fck-text-btn {
    display: inline-flex; align-items: center; gap: 0.3rem; width: auto; padding: 0.3rem 0.5rem; margin: 0; border: none; border-radius: 8px;
    background: none; color: var(--fck-muted); font-size: 0.8rem; font-weight: 600; cursor: pointer;
}
.fck .fck-text-btn:hover { background: var(--fck-accent-soft); color: var(--fck-text-1); }
.fck .fck-text-btn svg { width: 14px; height: 14px; }
.fck .fck-link-btn {
    display: inline; width: auto; padding: 0; margin: 0; border: none; background: none; cursor: pointer;
    color: var(--fck-accent-strong); font-size: 0.82rem; font-weight: 600;
}
[data-theme="dark"] .fck .fck-link-btn { color: var(--fck-accent); }
.fck .fck-link-btn:hover { text-decoration: underline; }
.fck .fck-btn:focus-visible, .fck .fck-link-btn:focus-visible, .fck .fck-adv-head:focus-visible,
.fck .fck-check-head:focus-visible, .fck .fck-plat:focus-visible, .fck .fck-segs button:focus-visible, .fck .fck-recent-item:focus-visible {
    outline: 2px solid var(--fck-accent); outline-offset: 2px;
}

/* ---------- input ---------- */
.fck .fck-form { display: flex; gap: 0.6rem; align-items: stretch; margin: 0; }
.fck .fck-field {
    position: relative; flex: 1; min-width: 0; display: flex; align-items: center; gap: 0.55rem;
    padding: 0 0.6rem 0 0.95rem; border: 1.5px solid var(--fck-line); border-radius: 14px; background: var(--input-bg, #fff);
    transition: border-color 0.15s, box-shadow 0.15s;
}
.fck .fck-field:focus-within { border-color: var(--fck-accent); box-shadow: 0 0 0 3px var(--fck-accent-soft); }
.fck .fck-field > svg { width: 20px; height: 20px; color: var(--fck-accent); flex-shrink: 0; }
.fck .fck-field input {
    flex: 1; min-width: 0; height: 50px; margin: 0; padding: 0; border: none; outline: none; box-shadow: none;
    background: transparent; color: var(--fck-text-1); font-size: 1rem;
}
.fck .fck-field input::placeholder { color: var(--fck-muted); opacity: 0.85; }
.fck .fck-under { display: flex; flex-wrap: wrap; align-items: center; gap: 0.45rem 0.5rem; margin-top: 0.85rem; }
.fck .fck-pill {
    display: inline-flex; align-items: center; gap: 0.35rem; padding: 0.25rem 0.6rem; border-radius: 999px;
    background: var(--fck-sunk); border: 1px solid var(--fck-line); font-size: 0.78rem; font-weight: 600; color: var(--fck-text-2);
}
.fck .fck-pill svg { width: 14px; height: 14px; color: var(--fck-accent); }
.fck .fck-try { margin-left: auto; font-size: 0.82rem; color: var(--fck-muted); }
.fck .fck-try .fck-link-btn + .fck-link-btn { margin-left: 0.4rem; }

/* collapsed option rows */
.fck .fck-adv { margin-top: 1rem; border: 1px solid var(--fck-line); border-radius: 12px; overflow: hidden; background: var(--fck-card); }
.fck .fck-adv-row + .fck-adv-row { border-top: 1px solid var(--fck-line); }
.fck .fck-adv-head {
    display: flex; align-items: center; justify-content: space-between; gap: 0.75rem; width: 100% !important; min-height: 54px;
    margin: 0; padding: 0.55rem 1rem; border: none; border-radius: 0; background: none; cursor: pointer; text-align: left; color: var(--fck-text-1); box-shadow: none;
}
.fck .fck-adv-left { display: flex; align-items: center; gap: 0.65rem; min-width: 0; }
.fck .fck-adv-left > svg { width: 18px; height: 18px; color: var(--fck-accent); flex-shrink: 0; }
.fck .fck-adv-text { display: flex; flex-direction: column; min-width: 0; }
.fck .fck-adv-title { font-size: 0.9rem; font-weight: 700; }
.fck .fck-adv-hint { font-size: 0.76rem; color: var(--fck-muted); line-height: 1.35; }
.fck .fck-adv-right { display: flex; align-items: center; gap: 0.5rem; flex-shrink: 0; }
.fck .fck-adv-value {
    min-width: 34px; text-align: center; padding: 0.2rem 0.55rem; border-radius: 999px;
    background: var(--fck-accent-soft); color: var(--fck-accent-strong); font-size: 0.74rem; font-weight: 700;
}
[data-theme="dark"] .fck .fck-adv-value { color: var(--fck-accent); }
.fck .fck-chevron { width: 17px; height: 17px; color: var(--fck-muted); transition: transform 0.2s; flex-shrink: 0; }
.fck .fck-adv-row.open .fck-chevron { transform: rotate(180deg); }
.fck .fck-adv-row.open .fck-adv-head, .fck .fck-adv-row.open .fck-adv-body { background: var(--fck-open); }
.fck .fck-adv-body { padding: 0.2rem 1rem 1rem; }

/* switches - must beat custom_styles.css's .tool-container input[type=checkbox] */
.fck .fck-switch-row { display: inline-flex; align-items: center; gap: 0.6rem; cursor: pointer; font-size: 0.85rem; font-weight: 700; color: var(--fck-text-1); }
.tool-container input[type="checkbox"].fck-switch {
    -webkit-appearance: none !important; -moz-appearance: none !important; appearance: none !important;
    position: relative; width: 42px !important; height: 24px !important; margin: 0 !important; flex-shrink: 0;
    border: none !important; border-radius: 999px !important; background: #cbd5e1 !important; cursor: pointer;
    transition: background 0.2s;
}
[data-theme="dark"] .tool-container input[type="checkbox"].fck-switch { background: #475569 !important; }
.tool-container input[type="checkbox"].fck-switch::after,
.tool-container input[type="checkbox"].fck-switch:checked::after {
    content: '' !important; position: absolute; top: 3px; left: 3px; width: 18px; height: 18px; border-radius: 50%;
    background: #fff; box-shadow: 0 1px 3px rgba(0, 0, 0, 0.25); transform: none; transition: left 0.2s;
    font-size: 0; color: transparent;
}
.tool-container input[type="checkbox"].fck-switch:checked { background: var(--fck-go) !important; }
.tool-container input[type="checkbox"].fck-switch:checked::after { left: 21px; }
.tool-container input[type="checkbox"].fck-switch:focus-visible { outline: 2px solid var(--fck-accent); outline-offset: 2px; }

/* recent */
.fck .fck-recent { margin-top: 1rem; }
.fck .fck-recent-head { display: flex; align-items: center; justify-content: space-between; gap: 0.5rem; margin-bottom: 0.45rem; }
.fck .fck-recent-list { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.fck .fck-recent-item {
    display: inline-flex; align-items: center; gap: 0.45rem; width: auto; max-width: 100%; min-height: 34px; margin: 0;
    padding: 0.25rem 0.35rem 0.25rem 0.75rem; border-radius: 999px; border: 1px solid var(--fck-line);
    background: var(--fck-card); color: var(--fck-text-2); font-size: 0.82rem; font-weight: 600; cursor: pointer; box-shadow: none;
}
.fck .fck-recent-item:hover { border-color: var(--fck-accent-line); color: var(--fck-text-1); }
.fck .fck-recent-host { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; min-width: 0; }
.fck .fck-recent-score { min-width: 28px; padding: 0.1rem 0.4rem; border-radius: 999px; font-size: 0.74rem; font-weight: 800; text-align: center; }
.fck .is-good.fck-recent-score, .fck .fck-group-score.is-good { background: var(--fck-ok-soft); color: var(--fck-ok); }
.fck .is-warn.fck-recent-score, .fck .fck-group-score.is-warn { background: var(--fck-warn-soft); color: var(--fck-warn); }
.fck .is-bad.fck-recent-score, .fck .fck-group-score.is-bad { background: var(--fck-bad-soft); color: var(--fck-bad); }

/* ---------- logo loader ---------- */
.fck .fck-loading { text-align: center; padding: 2.2rem 1.25rem; }
.fck .fck-loader {
    display: block; width: 72px; height: 72px; margin: 0 auto 1rem; overflow: visible;
    --cico-outer: #f2534e; --cico-outer-soft: #f8d3d1; --cico-mid: #31ae77; --cico-mid-soft: #d0e7dd; --cico-inner: #2b9edb;
}
[data-theme="dark"] .fck .fck-loader { --cico-outer-soft: rgba(242, 83, 78, 0.22); --cico-mid-soft: rgba(49, 174, 119, 0.22); }
.fck .fck-loader circle { fill: none; stroke-width: 72; transform-box: fill-box; transform-origin: center; }
.fck .fck-loader .bp { stroke: var(--cico-outer-soft); }
.fck .fck-loader .gp { stroke: var(--cico-mid-soft); }
.fck .fck-loader .b { stroke: var(--cico-outer); stroke-linecap: round; stroke-dasharray: 35.3 100; animation: fckSpinL 1.3s linear infinite; }
.fck .fck-loader .g { stroke: var(--cico-mid); stroke-linecap: round; stroke-dasharray: 75.8 100; animation: fckSpinR 2.1s linear infinite; }
.fck .fck-loader .r { stroke: var(--cico-inner); animation: fckBreathe 1.3s ease-in-out infinite; }
@keyframes fckSpinL { from { transform: rotate(117deg); } to { transform: rotate(-243deg); } }
@keyframes fckSpinR { from { transform: rotate(36deg); } to { transform: rotate(396deg); } }
@keyframes fckBreathe { 50% { transform: scale(0.9); } }
@media (prefers-reduced-motion: reduce) {
    .fck .fck-loader .b { animation-duration: 4s; }
    .fck .fck-loader .g { animation-duration: 6s; }
    .fck .fck-loader .r { animation: none; }
}
.fck .fck-loading-title { margin: 0; font-size: 1.1rem; font-weight: 700; color: var(--fck-text-1); overflow-wrap: anywhere; }
.fck .fck-loading-sub { margin: 0.35rem 0 0; font-size: 0.88rem; color: var(--fck-muted); min-height: 1.3em; }

/* ---------- overview ---------- */
.fck .fck-overview { display: flex; align-items: center; gap: 1.25rem; }
.fck .fck-score { position: relative; width: 112px; height: 112px; flex-shrink: 0; --fck-ring: var(--fck-accent); }
.fck .fck-score.is-good { --fck-ring: var(--fck-ok); }
.fck .fck-score.is-warn { --fck-ring: var(--fck-warn); }
.fck .fck-score.is-bad { --fck-ring: var(--fck-bad); }
.fck .fck-score svg { width: 100%; height: 100%; transform: rotate(-90deg); }
.fck .fck-score circle { fill: none; stroke-width: 9; }
.fck .fck-score .trk { stroke: var(--fck-sunk); }
.fck .fck-score .val { stroke: var(--fck-ring); stroke-linecap: round; transition: stroke-dashoffset 0.9s cubic-bezier(0.2, 0.8, 0.2, 1); }
.fck .fck-score-num {
    position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center;
    font-size: 2rem; font-weight: 800; color: var(--fck-text-1); line-height: 1;
}
.fck .fck-score-num small { margin-top: 0.2rem; font-size: 0.66rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--fck-muted); }
.fck .fck-verdict { flex: 1; min-width: 0; }
.fck .fck-verdict h2 { margin: 0 0 0.25rem; font-size: 1.3rem; color: var(--fck-text-1); }
.fck .fck-verdict > p { margin: 0; font-size: 0.92rem; line-height: 1.55; color: var(--fck-text-2); }
.fck .fck-tested { display: flex; align-items: center; flex-wrap: wrap; gap: 0.35rem; margin-top: 0.45rem !important; font-size: 0.85rem !important; }
.fck .fck-tested svg { width: 14px; height: 14px; color: var(--fck-accent); flex-shrink: 0; }
.fck .fck-tested a { color: var(--fck-accent-strong); font-weight: 600; overflow-wrap: anywhere; min-width: 0; }
[data-theme="dark"] .fck .fck-tested a { color: var(--fck-accent); }
.fck .fck-stats { display: flex; flex-wrap: wrap; gap: 0.35rem; margin-top: 0.7rem; }
.fck .fck-stat {
    display: inline-flex; align-items: center; gap: 0.3rem; padding: 0.22rem 0.6rem; border-radius: 999px;
    background: var(--fck-sunk); border: 1px solid var(--fck-line); font-size: 0.78rem; font-weight: 600; color: var(--fck-text-2);
}
.fck .fck-stat svg { width: 13px; height: 13px; color: var(--fck-accent); }
.fck .fck-stat.is-good svg { color: var(--fck-ok); }
.fck .fck-stat.is-warn svg { color: var(--fck-warn); }
.fck .fck-stat.is-bad svg { color: var(--fck-bad); }

/* platform cards */
.fck .fck-platforms { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0.6rem; margin-top: 1.1rem; }
.fck .fck-plat {
    display: flex; flex-direction: column; align-items: stretch; gap: 0.35rem; width: auto; min-width: 0; margin: 0;
    padding: 0.8rem 0.85rem; border-radius: 14px; border: 1px solid var(--fck-line); background: var(--fck-card);
    text-align: left; cursor: pointer; color: var(--fck-text-1); box-shadow: none; transition: border-color 0.15s, transform 0.15s;
}
.fck .fck-plat:hover { border-color: var(--fck-accent-line); transform: translateY(-1px); }
.fck .fck-plat.is-pass { background: var(--fck-ok-soft); border-color: var(--fck-ok-line); }
.fck .fck-plat.is-warn { background: var(--fck-warn-soft); border-color: var(--fck-warn-line); }
.fck .fck-plat.is-fail { background: var(--fck-bad-soft); border-color: var(--fck-bad-line); }
.fck .fck-plat-top { display: flex; align-items: center; gap: 0.4rem; font-size: 0.82rem; font-weight: 700; min-width: 0; }
.fck .fck-plat-top svg { width: 16px; height: 16px; color: var(--fck-accent); flex-shrink: 0; }
.fck .fck-plat-name { min-width: 0; overflow-wrap: anywhere; }
.fck .fck-plat-mid { display: flex; align-items: center; justify-content: space-between; gap: 0.4rem; flex-wrap: wrap; }
.fck .fck-plat-score { font-size: 1.5rem; font-weight: 800; line-height: 1; }
.fck .fck-plat-note { font-size: 0.74rem; color: var(--fck-muted); }
.fck .fck-badge { display: inline-flex; align-items: center; gap: 0.25rem; font-size: 0.72rem; font-weight: 700; }
.fck .fck-badge svg { width: 13px; height: 13px; }
.fck .fck-badge.is-pass { color: var(--fck-ok); }
.fck .fck-badge.is-warn { color: var(--fck-warn); }
.fck .fck-badge.is-fail { color: var(--fck-bad); }

/* ---------- sections ---------- */
.fck .fck-section { margin-top: 1.4rem; padding-top: 1.2rem; border-top: 1px solid var(--fck-line); min-width: 0; }
.fck .fck-section-head { display: flex; align-items: center; justify-content: space-between; gap: 0.6rem; flex-wrap: wrap; margin-bottom: 0.8rem; }
.fck .fck-sub-head { margin: 0.9rem 0 0.45rem; }
.fck .fck-segs { display: inline-flex; padding: 3px; border-radius: 10px; background: var(--fck-sunk); border: 1px solid var(--fck-line); gap: 2px; }
.fck .fck-segs button {
    display: inline-flex; align-items: center; gap: 0.3rem; width: auto; min-height: 30px; margin: 0; padding: 0.25rem 0.7rem;
    border: none; border-radius: 8px; background: none; color: var(--fck-muted); font-size: 0.8rem; font-weight: 700; cursor: pointer; box-shadow: none;
}
.fck .fck-segs button svg { width: 14px; height: 14px; }
.fck .fck-segs button.is-active { background: var(--fck-card); color: var(--fck-text-1); box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08); }

/* ---------- previews ---------- */
.fck .fck-previews { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr) minmax(0, 1.05fr); gap: 0.75rem; }
.fck .fck-pv { margin: 0; min-width: 0; display: flex; flex-direction: column; gap: 0.45rem; }
.fck .fck-pv figcaption { font-size: 0.74rem; color: var(--fck-muted); text-align: center; line-height: 1.4; }
.fck .fck-pv > div { border-radius: 12px; overflow: hidden; border: 1px solid var(--fck-line); }
.fck .fck-ico16 { display: inline-flex; align-items: center; justify-content: center; width: 16px; height: 16px; flex-shrink: 0; color: #80868b; }
.fck .fck-ico16 img { width: 16px; height: 16px; display: block; object-fit: contain; }
.fck .fck-ico16 svg { width: 14px; height: 14px; }
.fck .fck-ghost { border-radius: 50%; background: #c4c7c5; }

/* browser mock - fixed light/dark palettes so the preview never follows the site theme */
.fck .fck-pv-tab { --pv-bar: #dee1e6; --pv-tab: #fff; --pv-text: #1f1f1f; --pv-mute: #5f6368; --pv-addr: #f1f3f4; --pv-bm: #fff; --pv-line: #dadce0; }
.fck .fck-previews[data-ptheme="dark"] .fck-pv-tab { --pv-bar: #202124; --pv-tab: #35363a; --pv-text: #e8eaed; --pv-mute: #9aa0a6; --pv-addr: #202124; --pv-bm: #35363a; --pv-line: #3c4043; }
.fck .fck-pv-tab .fck-tabbar { display: flex; align-items: flex-end; gap: 2px; padding: 8px 8px 0; background: var(--pv-bar); border: none !important; }
.fck .fck-tab {
    display: flex; align-items: center; gap: 7px; min-width: 0; flex: 0 1 160px; height: 32px; padding: 0 9px;
    border-radius: 9px 9px 0 0; color: var(--pv-mute); font-size: 12px;
}
.fck .fck-tab.is-on { background: var(--pv-tab); color: var(--pv-text); }
.fck .fck-tab svg { width: 12px; height: 12px; flex-shrink: 0; }
.fck .fck-tab-title { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.fck .fck-tab-plus { width: 15px; height: 15px; color: var(--pv-mute); margin: 0 0 8px 4px; flex-shrink: 0; }
.fck .fck-addr {
    display: flex; align-items: center; gap: 7px; margin: 0; padding: 6px 10px; background: var(--pv-tab);
    color: var(--pv-text); font-size: 12px; border: none !important;
}
.fck .fck-addr > span { flex: 1; min-width: 0; padding: 4px 10px; border-radius: 999px; background: var(--pv-addr); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.fck .fck-addr svg { width: 12px; height: 12px; color: var(--pv-mute); flex-shrink: 0; }
.fck .fck-bookmarks { display: flex; align-items: center; gap: 4px; padding: 4px 8px 8px; background: var(--pv-tab); border: none !important; border-top: 1px solid var(--pv-line) !important; }
.fck .fck-bm { display: inline-flex; align-items: center; gap: 6px; min-width: 0; padding: 4px 8px; border-radius: 999px; color: var(--pv-text); font-size: 12px; }
.fck .fck-bm > span:last-child { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.fck .fck-bm-ghost { color: var(--pv-mute); white-space: nowrap; flex-shrink: 0; }
.fck .fck-bm-ghost svg { width: 13px; height: 13px; }
.fck .fck-pv-tab { gap: 0; }
.fck .fck-pv-tab .fck-tabbar { border-radius: 12px 12px 0 0; box-shadow: 0 0 0 1px var(--fck-line); }
.fck .fck-pv-tab .fck-bookmarks { border-radius: 0 0 12px 12px; box-shadow: 0 0 0 1px var(--fck-line); }
.fck .fck-pv-tab .fck-addr { box-shadow: 1px 0 0 var(--fck-line), -1px 0 0 var(--fck-line); }
.fck .fck-pv-tab figcaption { margin-top: 0.45rem; }

/* Google result mock */
.fck .fck-pv-google { --g-bg: #fff; --g-title: #1a0dab; --g-text: #4d5156; --g-name: #202124; --g-url: #4d5156; --g-ico: #f1f3f4; }
.fck .fck-previews[data-ptheme="dark"] .fck-pv-google { --g-bg: #1f1f1f; --g-title: #99c3ff; --g-text: #bfbfbf; --g-name: #dadce0; --g-url: #bdc1c6; --g-ico: #303134; }
.fck .fck-serp { padding: 14px 16px; background: var(--g-bg); font-family: Arial, Helvetica, sans-serif; height: 100%; box-sizing: border-box; }
.fck .fck-serp-top { display: flex; align-items: center; gap: 10px; min-width: 0; }
.fck .fck-serp-ico { width: 28px; height: 28px; border-radius: 50%; background: var(--g-ico); display: inline-flex; align-items: center; justify-content: center; flex-shrink: 0; }
.fck .fck-serp-ico img { width: 18px; height: 18px; object-fit: contain; display: block; }
.fck .fck-serp-ico svg { width: 16px; height: 16px; color: #70757a; }
.fck .fck-serp-site { display: flex; flex-direction: column; min-width: 0; line-height: 1.3; }
.fck .fck-serp-name { font-size: 14px; color: var(--g-name); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.fck .fck-serp-url { font-size: 12px; color: var(--g-url); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.fck .fck-serp-title { margin-top: 6px; font-size: 18px; line-height: 1.3; color: var(--g-title); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; overflow-wrap: anywhere; }
.fck .fck-serp-desc { margin-top: 4px; font-size: 13px; line-height: 1.55; color: var(--g-text); display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; overflow-wrap: anywhere; }

/* home screens */
.fck .fck-pv-phone { --ph-ios: #37476b; --ph-and: #dde3ea; --ph-label: #fff; --ph-label-and: #1f1f1f; }
.fck .fck-previews[data-ptheme="dark"] .fck-pv-phone { --ph-ios: #10131c; --ph-and: #1b1f24; --ph-label-and: #e8eaed; }
.fck .fck-phones { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); border: none !important; gap: 6px; height: 100%; }
.fck .fck-home { position: relative; display: flex; justify-content: center; align-items: flex-start; gap: 12px; padding: 16px 6px 26px; border-radius: 12px; min-width: 0; }
.fck .fck-home-ios { background: var(--ph-ios); }
.fck .fck-home-android { background: var(--ph-and); }
.fck .fck-app { display: flex; flex-direction: column; align-items: center; gap: 5px; width: 60px; min-width: 0; }
.fck .fck-app-icon { position: relative; width: 52px; height: 52px; display: flex; align-items: center; justify-content: center; overflow: hidden; flex-shrink: 0; }
.fck .fck-app-ios { border-radius: 12px; background: #fff; }
.fck .fck-app-ios img { width: 100%; height: 100%; object-fit: cover; display: block; }
.fck .fck-app-ios.is-black { background: #000; }
.fck .fck-app-ios.is-shot { background: #e5e7eb; }
.fck .fck-app-and { border-radius: 50%; background: #fff; }
.fck .fck-app-and img { width: 100%; height: 100%; object-fit: cover; display: block; }
.fck .fck-app-and.is-legacy img { width: 62%; height: 62%; object-fit: contain; }
.fck .fck-app-ghost { background: rgba(255, 255, 255, 0.35) !important; }
.fck .fck-home-android .fck-app-ghost { background: rgba(0, 0, 0, 0.12) !important; }
.fck .fck-previews[data-ptheme="dark"] .fck-home-android .fck-app-ghost { background: rgba(255, 255, 255, 0.14) !important; }
.fck .fck-letter { font-size: 22px; font-weight: 800; color: #64748b; font-family: system-ui, sans-serif; }
.fck .fck-app-name { max-width: 60px; font-size: 10.5px; line-height: 1.2; text-align: center; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--ph-label); font-family: system-ui, -apple-system, sans-serif; }
.fck .fck-home-android .fck-app-name { color: var(--ph-label-and); }
.fck .fck-app-ghostwrap { opacity: 0.85; }
.fck .fck-os { position: absolute; bottom: 6px; left: 0; right: 0; text-align: center; font-size: 9.5px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: rgba(255, 255, 255, 0.7); }
.fck .fck-home-android .fck-os { color: rgba(0, 0, 0, 0.45); }
.fck .fck-previews[data-ptheme="dark"] .fck-home-android .fck-os { color: rgba(255, 255, 255, 0.5); }

/* ---------- checks ---------- */
.fck .fck-group + .fck-group { margin-top: 1rem; }
.fck .fck-group-title { display: flex; align-items: center; gap: 0.45rem; margin: 0 0 0.5rem; font-size: 0.86rem; font-weight: 800; color: var(--fck-text-1); scroll-margin-top: 90px; }
.fck .fck-group-title svg { width: 16px; height: 16px; color: var(--fck-accent); }
.fck .fck-group-score { margin-left: auto; padding: 0.12rem 0.5rem; border-radius: 999px; font-size: 0.74rem; font-weight: 800; }
.fck .fck-group { scroll-margin-top: 90px; }
.fck .fck-checks { list-style: none; margin: 0; padding: 0; border: 1px solid var(--fck-line); border-radius: 12px; overflow: hidden; }
.fck .fck-check + .fck-check { border-top: 1px solid var(--fck-line); }
.fck .fck-check-head {
    display: flex; align-items: flex-start; gap: 0.7rem; width: 100%; margin: 0; padding: 0.75rem 0.9rem; border: none; border-radius: 0;
    background: none; text-align: left; color: var(--fck-text-1); box-shadow: none; box-sizing: border-box;
}
.fck button.fck-check-head { cursor: pointer; }
.fck button.fck-check-head:hover { background: var(--fck-open); }
.fck .fck-check.open .fck-check-head, .fck .fck-check.open .fck-check-body { background: var(--fck-open); }
.fck .fck-check.open .fck-chevron { transform: rotate(180deg); }
.fck .fck-st { width: 26px; height: 26px; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px; }
.fck .fck-st svg { width: 15px; height: 15px; stroke-width: 2.6; }
.fck .fck-st.is-pass { background: var(--fck-ok-soft); color: var(--fck-ok); }
.fck .fck-st.is-warn { background: var(--fck-warn-soft); color: var(--fck-warn); }
.fck .fck-st.is-fail { background: var(--fck-bad-soft); color: var(--fck-bad); }
.fck .fck-st.is-info { background: var(--fck-accent-soft); color: var(--fck-accent); }
.fck .fck-check-text { display: flex; flex-direction: column; gap: 0.15rem; flex: 1; min-width: 0; }
.fck .fck-check-title { font-size: 0.9rem; font-weight: 700; }
.fck .fck-check-found { font-size: 0.82rem; line-height: 1.5; color: var(--fck-text-2); overflow-wrap: anywhere; }
.fck .fck-check-right { display: flex; align-items: center; gap: 0.4rem; flex-shrink: 0; margin-top: 2px; }
.fck .fck-fix-chip { padding: 0.15rem 0.5rem; border-radius: 999px; background: var(--fck-accent-soft); color: var(--fck-accent-strong); font-size: 0.72rem; font-weight: 700; white-space: nowrap; }
[data-theme="dark"] .fck .fck-fix-chip { color: var(--fck-accent); }
.fck .fck-check.is-pass .fck-fix-chip { display: none; }
.fck .fck-check-body { padding: 0 0.9rem 0.9rem 3.1rem; }
.fck .fck-fix { display: flex; gap: 0.45rem; align-items: flex-start; margin: 0 0 0.6rem; font-size: 0.85rem; line-height: 1.55; color: var(--fck-text-1); }
.fck .fck-fix svg { width: 15px; height: 15px; color: var(--fck-accent); flex-shrink: 0; margin-top: 3px; }
.fck .fck-code-wrap { position: relative; }
.fck .fck-code-copy { position: absolute; top: 6px; right: 6px; }
.fck .fck-code {
    margin: 0; padding: 0.8rem 0.9rem; border-radius: 10px; background: var(--fck-code-bg); border: 1px solid var(--fck-line);
    overflow-x: auto; max-width: 100%; box-sizing: border-box; font-size: 0.8rem; line-height: 1.6; color: var(--fck-text-1);
    white-space: pre; tab-size: 2;
}
.fck .fck-code-wrap .fck-code { padding-right: 5.5rem; }
.fck .fck-code code { padding: 0; background: none; font-size: inherit; font-family: ui-monospace, SFMono-Regular, Consolas, 'Liberation Mono', monospace; overflow-wrap: normal; }
.fck .fck-check-links { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-top: 0.65rem; }

/* ---------- icons ---------- */
.fck .fck-icons { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 0.6rem; }
.fck .fck-icon { display: flex; gap: 0.7rem; align-items: flex-start; padding: 0.7rem; border-radius: 12px; border: 1px solid var(--fck-line); background: var(--fck-card); min-width: 0; }
.fck .fck-icon.is-broken { border-color: var(--fck-bad-line); background: var(--fck-bad-soft); }
.fck .fck-icon-thumb { width: 56px; height: 56px; border-radius: 10px; flex-shrink: 0; display: flex; align-items: center; justify-content: center; overflow: hidden; border: 1px solid var(--fck-line); }
.fck .fck-icon-thumb img { max-width: 48px; max-height: 48px; display: block; image-rendering: auto; }
.fck .fck-icon-thumb svg { width: 22px; height: 22px; color: var(--fck-muted); }
.fck .fck-icon-body { display: flex; flex-direction: column; gap: 0.12rem; min-width: 0; }
.fck .fck-icon-label { font-size: 0.85rem; color: var(--fck-text-1); }
.fck .fck-icon-meta { font-size: 0.76rem; color: var(--fck-muted); overflow-wrap: anywhere; }
.fck .fck-icon-err { font-size: 0.76rem; color: var(--fck-bad); font-weight: 600; overflow-wrap: anywhere; }
.fck .fck-icon-url { font-size: 0.74rem; color: var(--fck-accent-strong); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 100%; display: block; }
[data-theme="dark"] .fck .fck-icon-url { color: var(--fck-accent); }
.fck .fck-empty { grid-column: 1 / -1; display: flex; align-items: center; gap: 0.7rem; padding: 1rem; border-radius: 12px; background: var(--fck-sunk); color: var(--fck-text-2); font-size: 0.88rem; }
.fck .fck-empty svg { width: 22px; height: 22px; color: var(--fck-muted); flex-shrink: 0; }
.fck .fck-empty p { margin: 0; }

/* details (markup) */
.fck .fck-details summary { cursor: pointer; list-style: none; display: flex; width: 100%; }
.fck .fck-details summary::-webkit-details-marker { display: none; }
.fck .fck-details summary .fck-chevron { margin-left: auto; }
.fck .fck-details[open] summary .fck-chevron { transform: rotate(180deg); }

/* action bar */
.fck .fck-actionbar { display: flex; align-items: center; gap: 0.5rem; flex-wrap: wrap; margin-top: 1.4rem; padding-top: 1.1rem; border-top: 1px solid var(--fck-line); }
.fck .fck-actionbar .fck-go { margin-left: auto; }
.fck .fck-next { margin-top: 1rem; }
.fck .fck-next .fck-caption { margin-bottom: 0.45rem; display: flex; }
.fck .fck-next-links { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.fck .fck-next-link {
    display: inline-flex; align-items: center; gap: 0.35rem; padding: 0.4rem 0.8rem; border-radius: 999px;
    border: 1px solid var(--fck-line); background: var(--fck-card); color: var(--fck-text-2); font-size: 0.82rem; font-weight: 600; text-decoration: none;
}
.fck .fck-next-link svg { width: 14px; height: 14px; color: var(--fck-accent); }
.fck .fck-next-link:hover { border-color: var(--fck-accent-line); color: var(--fck-text-1); }

/* toast */
.fck .fck-toast {
    position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%); z-index: 9999; max-width: calc(100vw - 32px);
    padding: 0.7rem 1.1rem; border-radius: 12px; background: #1e293b; color: #fff; font-size: 0.88rem; font-weight: 600;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2); box-sizing: border-box; text-align: center;
}
[data-theme="dark"] .fck .fck-toast { background: #e2e8f0; color: #0f172a; }

/* ---------- info content ---------- */
.fck .fck-info { margin-top: 2rem; display: flex; flex-direction: column; gap: 1.25rem; }
.fck .fck-info .info-card p { line-height: 1.65; }
.fck .fck-info .info-card a { color: var(--fck-accent-strong); font-weight: 500; }
[data-theme="dark"] .fck .fck-info .info-card a { color: var(--fck-accent); }
.fck .fck-list strong { color: var(--fck-text-1); }
.fck .fck-list { margin: 0.6rem 0 0.8rem; padding-left: 1.2rem; line-height: 1.65; color: var(--fck-text-2); }
.fck .fck-list li + li { margin-top: 0.35rem; }
.fck .fck-features { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0.8rem; }
.fck .fck-feature { display: flex; gap: 0.75rem; align-items: flex-start; padding: 0.85rem; border-radius: 12px; background: var(--fck-sunk); min-width: 0; }
.fck .fck-feature-icon { width: 38px; height: 38px; border-radius: 10px; background: var(--fck-accent-soft); color: var(--fck-accent); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.fck .fck-feature-icon svg { width: 19px; height: 19px; }
.fck .fck-feature h4 { margin: 0 0 0.2rem; font-size: 0.92rem; color: var(--fck-text-1); }
.fck .fck-feature p { margin: 0; font-size: 0.84rem; line-height: 1.55; color: var(--fck-text-2); }
.fck .fck-table-wrap { overflow-x: auto; margin: 0.4rem 0 0.8rem; border: 1px solid var(--fck-line); border-radius: 12px; }
.fck .fck-table { width: 100%; border-collapse: collapse; font-size: 0.86rem; }
.fck .fck-table th, .fck .fck-table td { padding: 0.55rem 0.8rem; text-align: left; border-bottom: 1px solid var(--fck-line); color: var(--fck-text-2); }
.fck .fck-table th { background: var(--fck-sunk); color: var(--fck-text-1); font-weight: 700; font-size: 0.8rem; }
.fck .fck-table tr:last-child td { border-bottom: none; }
.fck .fck-practices { list-style: none; margin: 0 0 0.8rem; padding: 0; display: grid; gap: 0.6rem; }
.fck .fck-practices li { display: flex; gap: 0.65rem; align-items: flex-start; font-size: 0.9rem; line-height: 1.55; color: var(--fck-text-2); }
.fck .fck-practices strong { color: var(--fck-text-1); }
.fck .fck-pr-icon { width: 24px; height: 24px; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center; flex-shrink: 0; }
.fck .fck-pr-icon svg { width: 14px; height: 14px; stroke-width: 2.6; }
.fck .fck-pr-icon.is-good { background: var(--fck-ok-soft); color: var(--fck-ok); }
.fck .fck-pr-icon.is-warn { background: var(--fck-warn-soft); color: var(--fck-warn); }

/* ---------- responsive ---------- */
@media (max-width: 900px) {
    .fck .fck-previews { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
    .fck .fck-pv-phone { grid-column: 1 / -1; }
    .fck .fck-platforms { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 640px) {
    .fck.tool-container { padding: 1.25rem 16px; }
    .fck .tool-title { font-size: 1.6rem; }
    .fck .fck-title-icon { width: 46px; height: 46px; border-radius: 13px; }
    .fck .fck-title-icon svg { width: 25px; height: 25px; }
    .fck .tool-description { font-size: 0.98rem; }
    .fck .fck-card { padding: 1rem; border-radius: 16px; }
    .fck .fck-form { flex-direction: column; }
    .fck .fck-form .fck-btn { width: 100%; }
    .fck .fck-try { margin-left: 0; width: 100%; }
    .fck .fck-overview { flex-direction: column; text-align: center; }
    .fck .fck-tested, .fck .fck-stats { justify-content: center; }
    .fck .fck-previews { grid-template-columns: minmax(0, 1fr); }
    .fck .fck-features { grid-template-columns: minmax(0, 1fr); }
    .fck .fck-check-body { padding-left: 0.9rem; }
    .fck .fck-fix-chip { display: none; }
    .fck .fck-actionbar .fck-btn { flex: 1 1 calc(50% - 0.5rem); }
    .fck .fck-actionbar .fck-go { margin-left: 0; flex-basis: 100%; }
    .fck .fck-icons { grid-template-columns: minmax(0, 1fr); }
    .fck .fck-adv-hint { font-size: 0.72rem; }
}

/* Shared steps list + FAQ (main CSS) follow the tool accent (2026-10-11) */
.fck.tool-container { --tool-accent: var(--fck-accent, #3399cc); }