/* =====================================================================
   SenderReputation.org - Tool "Diagnostic Console" design system
   Namespaced under .srt to extend the 2026 system without colliding
   with style.css. Loaded only on /tools/* pages.
   Ported from the approved demo-tools-1 direction + live-tool states
   (loading, error, empty) that the static demo did not need.
   ===================================================================== */

.srt{
  --ink:#0F172A; --ink-2:#1E293B; --body:#334155; --body-2:#475569;
  --muted:#64748B; --muted-2:#94A3B8; --line:#E2E8F0; --line-2:#F1F5F9;
  --surface-2:#F8FAFC; --surface-3:#FCFCFD;
  --sky:#0EA5E9; --sky-deep:#0369A1; --sky-600:#0284C7; --sky-bg:#F0F9FF;
  --sky-border:#BAE6FD; --sky-100:#E0F2FE;
  --success:#10B981; --success-deep:#047857; --success-bg:#ECFDF5; --success-border:#A7F3D0;
  --warn:#F59E0B; --warn-deep:#B45309; --warn-bg:#FFFBEB; --warn-border:#FDE68A;
  --danger:#EF4444; --danger-deep:#B91C1C; --danger-bg:#FEF2F2; --danger-border:#FECACA;
  --shadow-card:0 1px 2px rgba(15,23,42,.04), 0 16px 30px -22px rgba(15,23,42,.18);
}
.srt{color:var(--body);font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif}
.srt :focus-visible{outline:2px solid var(--sky);outline-offset:2px;border-radius:6px}
.srt svg{display:block}

/* ── Buttons (tool-scoped so global .btn is untouched) ─────────────── */
.srt-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-family:inherit;font-weight:600;font-size:.92rem;line-height:1;padding:12px 20px;border-radius:10px;border:1px solid transparent;cursor:pointer;transition:transform .15s,box-shadow .15s,background .15s,border-color .15s,opacity .15s;white-space:nowrap}
.srt-btn svg{flex-shrink:0}
.srt-btn-primary{background:linear-gradient(135deg,var(--sky),var(--sky-600));color:#fff;box-shadow:0 6px 16px -8px rgba(2,132,199,.6)}
.srt-btn-primary:hover{color:#fff;transform:translateY(-1px);box-shadow:0 12px 22px -10px rgba(2,132,199,.7)}
.srt-btn-primary:disabled{opacity:.65;cursor:default;transform:none;box-shadow:none}
.srt-btn-secondary{background:#fff;color:var(--ink-2);border-color:var(--line)}
.srt-btn-secondary:hover{border-color:var(--sky-border);background:var(--sky-bg);color:var(--sky-deep)}

/* ── Hero ──────────────────────────────────────────────────────────── */
.srt-hero{position:relative;background:#fff;border-bottom:1px solid var(--line);padding:2.2rem 0 2.6rem;overflow:hidden}
.srt-hero::before{content:'';position:absolute;inset:0;
  background-image:
    radial-gradient(circle at 80% 0%,rgba(186,230,253,.35),transparent 45%),
    radial-gradient(circle at 20% 30%,rgba(186,230,253,.22),transparent 55%),
    radial-gradient(#CBD5E1 1px,transparent 1px);
  background-size:auto,auto,24px 24px;
  -webkit-mask-image:radial-gradient(ellipse 80% 70% at 50% 30%,#000 35%,transparent 78%);
  mask-image:radial-gradient(ellipse 80% 70% at 50% 30%,#000 35%,transparent 78%);
  opacity:.6;pointer-events:none}
.srt-hero .container{position:relative;z-index:1}
/* Breadcrumbs on the light hero (override style.css dark-hero variant) */
.srt .breadcrumbs{padding:0;font-size:.82rem}
.srt .breadcrumbs ol{display:flex;align-items:center;flex-wrap:wrap;gap:6px;margin:0;padding:0;list-style:none}
.srt .breadcrumbs a{color:var(--muted);font-weight:500;min-height:0}
.srt .breadcrumbs a:hover{color:var(--sky-deep)}
.srt .breadcrumbs .separator{color:var(--muted-2);margin:0;font-size:.75rem}
.srt .breadcrumbs .current{color:var(--body-2);font-weight:600}
.srt-eyebrow{display:inline-flex;align-items:center;gap:7px;margin:1.05rem 0 .85rem;font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;padding:5px 12px;border-radius:999px;background:var(--sky-bg);border:1px solid var(--sky-border);color:var(--sky-deep)}
.srt-eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--sky);box-shadow:0 0 0 3px rgba(14,165,233,.18)}
.srt-hero h1{font-size:clamp(2rem,5vw,2.85rem);line-height:1.05;letter-spacing:-.025em;color:var(--ink);font-weight:800}
.srt-hero h1 .grad{background:linear-gradient(120deg,var(--sky),var(--sky-deep));-webkit-background-clip:text;background-clip:text;color:transparent}
.srt-hero-sub{margin-top:.7rem;font-size:clamp(1rem,2.1vw,1.15rem);line-height:1.6;color:var(--body-2);max-width:66ch}

/* Scan bar */
.srt-scanbar{margin-top:1.6rem;max-width:740px}
.srt-scanbar-field{display:flex;align-items:center;gap:8px;background:#fff;border:1.5px solid var(--line);border-radius:14px;padding:7px 7px 7px 16px;box-shadow:var(--shadow-card);transition:border-color .15s,box-shadow .15s}
.srt-scanbar-field:focus-within{border-color:var(--sky-border);box-shadow:0 0 0 4px rgba(14,165,233,.12),var(--shadow-card)}
.srt-scanbar-ico{color:var(--muted-2);flex-shrink:0}
.srt-scanbar input,.srt-scanbar select{flex:1;min-width:0;border:none;outline:none;font-family:inherit;font-size:1rem;font-weight:500;color:var(--ink);background:transparent;padding:9px 4px}
.srt-scanbar input::placeholder{color:var(--muted-2);font-weight:400}
.srt-scanbar .srt-btn{padding:12px 20px}
.srt-scanbar-sel{display:flex;align-items:center;gap:6px;padding:0 4px 0 12px;margin-left:2px;border-left:1px solid var(--line);flex-shrink:0}
.srt-scanbar-sel label{font-size:.74rem;font-weight:600;color:var(--muted);text-transform:uppercase;letter-spacing:.04em}
.srt-scanbar-sel input{max-width:150px;font-size:.92rem;padding:9px 2px}
.srt-scanbar-note{display:flex;align-items:center;gap:7px;margin-top:.7rem;font-size:.82rem;color:var(--muted)}
.srt-scanbar-note svg{color:var(--success);flex-shrink:0}
/* Human check: hidden by default. The first few checks/day are captcha-free;
   the widget + prompt are revealed only when the API actually asks for one. */
.srt-turnstile{display:none;margin-top:14px}
.srt-turnstile.cap-show{display:flex;justify-content:center}
.srt-cap-prompt{display:none}
.srt-cap-prompt.cap-show{display:flex;align-items:flex-start;gap:12px;margin-top:16px;padding:14px 16px;border:1px solid #BAE6FD;background:linear-gradient(180deg,#F0F9FF,#FFFFFF);border-radius:14px;box-shadow:0 1px 2px rgba(2,32,71,.05);animation:srtCapIn .25s ease}
@keyframes srtCapIn{from{opacity:0;transform:translateY(4px)}to{opacity:1;transform:none}}
.srt-cap-ico{flex-shrink:0;width:34px;height:34px;display:flex;align-items:center;justify-content:center;border-radius:9px;background:#0EA5E9;color:#fff}
.srt-cap-ico svg{width:18px;height:18px}
.srt-cap-tx{font-size:.9rem;line-height:1.5;color:#475569}
.srt-cap-tx strong{display:block;color:#0B1220;font-weight:700;font-size:.95rem;margin-bottom:1px}

/* ── Dashboard body ────────────────────────────────────────────────── */
.srt-dash{padding:2.4rem 0 3.4rem;background:var(--surface-3);border-bottom:1px solid var(--line)}
.srt-dash-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:40px;align-items:start}
@media (max-width:980px){.srt-dash-layout{grid-template-columns:1fr;gap:30px}}
.srt-dash-main{min-width:0}

.srt-console-label{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:.1em;color:var(--muted);margin-bottom:1.1rem}
.srt-console-label .grad{background:linear-gradient(120deg,var(--sky),var(--sky-deep));-webkit-background-clip:text;background-clip:text;color:transparent}
.srt-console-label .live{display:inline-flex;align-items:center;gap:6px;color:var(--success-deep);text-transform:none;letter-spacing:0;font-weight:600}
.srt-console-label .live i{width:7px;height:7px;border-radius:50%;background:var(--success);box-shadow:0 0 0 3px rgba(16,185,129,.18)}

/* Reveal primitive */
.srt-reveal{opacity:0;transform:translateY(14px)}
.srt-reveal.in{opacity:1;transform:none;transition:opacity .55s cubic-bezier(.22,.61,.36,1),transform .55s cubic-bezier(.22,.61,.36,1)}
.srt-dash-main.scanning{opacity:.45;filter:saturate(.6);transition:opacity .2s,filter .2s;pointer-events:none}

/* Card base */
.srt-card{background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow-card);margin-bottom:1.4rem;overflow:hidden}

/* Verdict card (tone-coloured) */
.srt-verdict{margin-bottom:1.4rem;border-radius:16px;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow-card);overflow:hidden}
.srt-verdict.t-success{border-color:var(--success-border)}
.srt-verdict.t-warn{border-color:var(--warn-border)}
.srt-verdict.t-danger{border-color:var(--danger-border)}
.srt-verdict.t-neutral{border-color:var(--sky-border)}
.srt-verdict-head{display:flex;align-items:center;gap:16px;padding:22px 24px;border-bottom:1px solid var(--line)}
.srt-verdict.t-success .srt-verdict-head{background:linear-gradient(180deg,var(--success-bg),#fff);border-bottom-color:var(--success-border)}
.srt-verdict.t-warn .srt-verdict-head{background:linear-gradient(180deg,var(--warn-bg),#fff);border-bottom-color:var(--warn-border)}
.srt-verdict.t-danger .srt-verdict-head{background:linear-gradient(180deg,var(--danger-bg),#fff);border-bottom-color:var(--danger-border)}
.srt-verdict.t-neutral .srt-verdict-head{background:linear-gradient(180deg,var(--sky-bg),#fff);border-bottom-color:var(--sky-border)}
.srt-verdict-icon{flex-shrink:0;width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;color:#fff}
.srt-verdict.t-success .srt-verdict-icon{background:linear-gradient(140deg,#34D399,var(--success-deep));box-shadow:0 10px 22px -10px rgba(4,120,87,.55)}
.srt-verdict.t-warn .srt-verdict-icon{background:linear-gradient(140deg,#FBBF24,var(--warn-deep));box-shadow:0 10px 22px -10px rgba(180,83,9,.5)}
.srt-verdict.t-danger .srt-verdict-icon{background:linear-gradient(140deg,#F87171,var(--danger-deep));box-shadow:0 10px 22px -10px rgba(185,28,28,.5)}
.srt-verdict.t-neutral .srt-verdict-icon{background:linear-gradient(140deg,#38BDF8,var(--sky-600));box-shadow:0 10px 22px -10px rgba(2,132,199,.5)}
.srt-verdict-titles{min-width:0}
.srt-verdict-titles h2{font-size:clamp(1.12rem,2.6vw,1.4rem);line-height:1.2;letter-spacing:-.02em;color:var(--ink);font-weight:800}
.srt-verdict-titles p{margin-top:3px;font-size:.92rem;color:var(--body-2);line-height:1.5}
.srt-verdict-titles .target{font-family:'JetBrains Mono',monospace;font-weight:600}
.srt-verdict.t-success .target{color:var(--success-deep)}
.srt-verdict.t-warn .target{color:var(--warn-deep)}
.srt-verdict.t-danger .target{color:var(--danger-deep)}
.srt-verdict.t-neutral .target{color:var(--sky-deep)}
.srt-verdict-pill{margin-left:auto;align-self:flex-start;flex-shrink:0;display:inline-flex;align-items:center;gap:6px;font-size:.74rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em;padding:6px 12px;border-radius:999px;background:#fff;border:1px solid var(--line)}
.srt-verdict.t-success .srt-verdict-pill{border-color:var(--success-border);color:var(--success-deep)}
.srt-verdict.t-warn .srt-verdict-pill{border-color:var(--warn-border);color:var(--warn-deep)}
.srt-verdict.t-danger .srt-verdict-pill{border-color:var(--danger-border);color:var(--danger-deep)}
.srt-verdict.t-neutral .srt-verdict-pill{border-color:var(--sky-border);color:var(--sky-deep)}
@media (max-width:560px){.srt-verdict-head{flex-wrap:wrap}.srt-verdict-pill{margin-left:0}}

/* At a glance fact grid */
.srt-facts-head{display:flex;align-items:center;gap:8px;padding:11px 24px;font-size:.74rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);background:var(--surface-2);border-bottom:1px solid var(--line)}
.srt-facts-head svg{color:var(--sky)}
.srt-facts-grid{display:grid;grid-template-columns:1fr 1fr 1fr}
@media (max-width:680px){.srt-facts-grid{grid-template-columns:1fr 1fr}}
@media (max-width:420px){.srt-facts-grid{grid-template-columns:1fr}}
.srt-fact{display:flex;flex-direction:column;gap:4px;padding:15px 24px;border-top:1px solid var(--line-2);border-right:1px solid var(--line-2)}
.srt-facts-grid .srt-fact:nth-child(3n){border-right:none}
@media (max-width:680px){.srt-facts-grid .srt-fact:nth-child(3n){border-right:1px solid var(--line-2)}.srt-facts-grid .srt-fact:nth-child(2n){border-right:none}}
@media (max-width:420px){.srt-facts-grid .srt-fact{border-right:none!important}}
.srt-fact-label{font-size:.7rem;font-weight:600;text-transform:uppercase;letter-spacing:.05em;color:var(--muted-2)}
.srt-fact-value{font-size:.96rem;color:var(--ink-2);font-weight:600;display:flex;align-items:center;gap:7px;flex-wrap:wrap}
.srt-fact-value.mono{font-family:'JetBrains Mono',monospace}
.srt-fact-tick{color:var(--success-deep);flex-shrink:0}
.srt-fact-cross{color:var(--danger-deep);flex-shrink:0}
.srt-fact-mini{font-size:.78rem;font-weight:600}
.srt-fact-mini.warn{color:var(--warn-deep)}
.srt-fact-mini.ok{color:var(--success-deep)}
.srt-fact-mini.bad{color:var(--danger-deep)}

/* Section heading inside dashboard cards */
.srt-card-pad{padding:20px 24px 22px}
.srt-card-h{display:flex;align-items:center;gap:9px;font-size:1rem;font-weight:700;letter-spacing:-.01em;color:var(--ink);margin-bottom:14px}
.srt-card-h .ico{display:inline-flex;width:26px;height:26px;align-items:center;justify-content:center;border-radius:8px;background:var(--sky-bg);color:var(--sky-deep);border:1px solid var(--sky-border);flex-shrink:0}
.srt-card-h .meta{margin-left:auto;font-size:.78rem;font-weight:600;color:var(--muted)}

/* Terminal / code card */
.srt-term{border-radius:14px;overflow:hidden;border:1px solid #1E293B;background:#0B1220;box-shadow:0 24px 48px -28px rgba(2,8,23,.7);margin-bottom:1.4rem}
.srt-term:last-child{margin-bottom:0}
.srt-term-bar{display:flex;align-items:center;gap:12px;padding:10px 14px;background:#111c30;border-bottom:1px solid #1E293B}
.srt-term-dots{display:inline-flex;gap:6px}
.srt-term-dots i{width:11px;height:11px;border-radius:50%}
.srt-term-dots i:nth-child(1){background:#ED6A5E}.srt-term-dots i:nth-child(2){background:#F4BF4F}.srt-term-dots i:nth-child(3){background:#61C554}
.srt-term-title{font-family:'JetBrains Mono',monospace;font-size:.74rem;color:#8595AD;margin-right:auto;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.srt-copy{display:inline-flex;align-items:center;gap:6px;font-family:inherit;font-size:.74rem;font-weight:600;color:#CBD5E1;background:rgba(148,163,184,.12);border:1px solid rgba(148,163,184,.2);border-radius:7px;padding:5px 11px;cursor:pointer;transition:all .15s;flex-shrink:0}
.srt-copy:hover{background:rgba(148,163,184,.22);color:#fff}
.srt-copy.copied{color:#61C554;border-color:rgba(97,197,84,.4)}
.srt-term-body{padding:16px 18px;overflow-x:auto}
.srt-term-prompt{font-family:'JetBrains Mono',monospace;font-size:.78rem;color:#5B6B86;margin-bottom:8px}
.srt-term-prompt .cmd{color:#9FB3D1}
.srt-term-record{font-family:'JetBrains Mono',monospace;font-size:.92rem;line-height:1.7;color:#E2E8F0;white-space:pre-wrap;word-break:break-word}
.srt-term-record.nowrap{white-space:pre;word-break:normal}
.tk-v{color:#7DD3FC}.tk-inc{color:#86EFAC}.tk-ip{color:#FCD34D}.tk-all{color:#F0ABFC}.tk-k{color:#94A3B8}.tk-tag{color:#7DD3FC}.tk-val{color:#86EFAC}
.srt-term-caption{font-family:'JetBrains Mono',monospace;font-size:.74rem;color:#5B6B86;margin-top:12px;padding-top:11px;border-top:1px solid rgba(148,163,184,.14)}

/* Lookup meter */
.srt-meter-top{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin-bottom:10px;flex-wrap:wrap}
.srt-meter-count{font-family:'JetBrains Mono',monospace;font-weight:600;font-size:1.5rem;letter-spacing:-.01em;color:var(--ink)}
.srt-meter-count b{font-weight:600}
.srt-meter-count.ok b{color:var(--success-deep)}
.srt-meter-count.warn b{color:var(--warn-deep)}
.srt-meter-count.bad b{color:var(--danger-deep)}
.srt-meter-count span{font-size:.92rem;color:var(--muted)}
.srt-meter-status{display:inline-flex;align-items:center;gap:6px;font-size:.74rem;font-weight:700;text-transform:uppercase;letter-spacing:.04em;padding:5px 11px;border-radius:999px}
.srt-meter-status.ok{background:var(--success-bg);border:1px solid var(--success-border);color:var(--success-deep)}
.srt-meter-status.warn{background:var(--warn-bg);border:1px solid var(--warn-border);color:var(--warn-deep)}
.srt-meter-status.bad{background:var(--danger-bg);border:1px solid var(--danger-border);color:var(--danger-deep)}
.srt-meter-track{position:relative;height:14px;border-radius:999px;background:var(--line-2);border:1px solid var(--line);overflow:hidden}
.srt-meter-fill{height:100%;width:0;border-radius:999px;background:linear-gradient(90deg,#34D399 0%,#A3E635 38%,var(--warn) 78%,#FB923C 100%);transition:width 1.1s cubic-bezier(.22,.61,.36,1)}
.srt-meter-fill.bad{background:linear-gradient(90deg,var(--warn) 0%,var(--danger) 80%)}
.srt-meter-ticks{position:relative;display:flex;justify-content:space-between;margin-top:7px;font-family:'JetBrains Mono',monospace;font-size:.7rem;color:var(--muted-2)}
.srt-meter-ticks .limit{color:var(--danger-deep);font-weight:600}
.srt-meter-note{margin-top:14px;display:flex;gap:10px;font-size:.88rem;line-height:1.6;color:var(--body-2);background:var(--surface-2);border:1px solid var(--line);border-radius:11px;padding:12px 14px}
.srt-meter-note svg{flex-shrink:0;color:var(--sky-deep);margin-top:2px}
.srt-meter-note code{font-family:'JetBrains Mono',monospace;font-size:.85em;background:var(--sky-bg);color:var(--sky-deep);border:1px solid var(--sky-border);padding:1px 6px;border-radius:6px}

/* Data table (mechanisms, MX rows, blacklists, etc.) */
.srt-table-scroll{overflow-x:auto;border:1px solid var(--line);border-radius:12px}
.srt-table{width:100%;border-collapse:collapse;font-size:.92rem;min-width:480px}
.srt-table thead th{text-align:left;font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);padding:11px 16px;background:var(--surface-2);border-bottom:1px solid var(--line);white-space:nowrap}
.srt-table tbody td{padding:13px 16px;border-bottom:1px solid var(--line-2);vertical-align:middle;color:var(--body)}
.srt-table tbody tr:last-child td{border-bottom:none}
.srt-table tbody tr:hover{background:var(--surface-3)}
.srt-table td.num,.srt-table th.num{text-align:right;font-family:'JetBrains Mono',monospace;font-weight:600;color:var(--ink-2)}
.srt-table td.num.zero{color:var(--muted-2);font-weight:400}
.srt-mono{font-family:'JetBrains Mono',monospace}
.srt-mech-mech{font-family:'JetBrains Mono',monospace;font-weight:600;color:var(--sky-deep)}
.srt-mech-val{font-family:'JetBrains Mono',monospace;font-size:.86rem;color:var(--body)}
.srt-mech-val.empty{color:var(--muted-2)}
.srt-qpill{display:inline-flex;align-items:center;gap:6px;font-size:.74rem;font-weight:700;padding:4px 9px;border-radius:7px;white-space:nowrap}
.srt-qpill .q{font-family:'JetBrains Mono',monospace;font-size:.9em}
.srt-qpill.pass{background:var(--success-bg);border:1px solid var(--success-border);color:var(--success-deep)}
.srt-qpill.soft{background:var(--warn-bg);border:1px solid var(--warn-border);color:var(--warn-deep)}
.srt-qpill.fail{background:var(--danger-bg);border:1px solid var(--danger-border);color:var(--danger-deep)}
.srt-qpill.neutral{background:var(--sky-bg);border:1px solid var(--sky-border);color:var(--sky-deep)}
.srt-table-foot{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:8px;margin-top:12px;font-size:.84rem;color:var(--muted)}
.srt-table-foot b{color:var(--ink-2);font-family:'JetBrains Mono',monospace}
.srt-table-foot code{font-family:'JetBrains Mono',monospace}

/* Issues list */
.srt-issues{display:grid;gap:10px}
.srt-issue{display:flex;gap:13px;padding:14px 16px;border-radius:12px;border:1px solid var(--line);background:#fff}
.srt-issue-ico{flex-shrink:0;width:30px;height:30px;border-radius:9px;display:flex;align-items:center;justify-content:center}
.srt-issue-body{min-width:0}
.srt-issue-body h4{font-size:.95rem;font-weight:700;color:var(--ink);line-height:1.35}
.srt-issue-body p{margin-top:3px;font-size:.88rem;line-height:1.55;color:var(--body-2)}
.srt-issue-body code{font-family:'JetBrains Mono',monospace;font-size:.85em;padding:1px 5px;border-radius:5px}
.srt-issue.success{border-color:var(--success-border);background:linear-gradient(180deg,var(--success-bg),#fff)}
.srt-issue.success .srt-issue-ico{background:var(--success-bg);color:var(--success-deep);border:1px solid var(--success-border)}
.srt-issue.success code{background:var(--success-bg);color:var(--success-deep);border:1px solid var(--success-border)}
.srt-issue.warn{border-color:var(--warn-border);background:linear-gradient(180deg,var(--warn-bg),#fff)}
.srt-issue.warn .srt-issue-ico{background:var(--warn-bg);color:var(--warn-deep);border:1px solid var(--warn-border)}
.srt-issue.warn code{background:var(--warn-bg);color:var(--warn-deep);border:1px solid var(--warn-border)}
.srt-issue.fail{border-color:var(--danger-border);background:linear-gradient(180deg,var(--danger-bg),#fff)}
.srt-issue.fail .srt-issue-ico{background:var(--danger-bg);color:var(--danger-deep);border:1px solid var(--danger-border)}
.srt-issue.fail code{background:var(--danger-bg);color:var(--danger-deep);border:1px solid var(--danger-border)}
.srt-issue.info .srt-issue-ico{background:var(--sky-bg);color:var(--sky-deep);border:1px solid var(--sky-border)}
.srt-issue.info code{background:var(--sky-bg);color:var(--sky-deep);border:1px solid var(--sky-border)}

/* Loading / error / empty states */
.srt-loading{display:flex;flex-direction:column;align-items:center;gap:14px;padding:46px 24px;text-align:center;color:var(--muted)}
.srt-spinner{width:38px;height:38px;border-radius:50%;border:3px solid var(--line);border-top-color:var(--sky);animation:srt-spin .8s linear infinite}
@keyframes srt-spin{to{transform:rotate(360deg)}}
.srt-loading p{font-size:.95rem;font-weight:500;color:var(--body-2)}
.srt-error{display:flex;gap:13px;padding:16px 18px;border-radius:13px;border:1px solid var(--danger-border);background:linear-gradient(180deg,var(--danger-bg),#fff);color:var(--danger-deep);margin-bottom:1.4rem}
.srt-error svg{flex-shrink:0;margin-top:1px}
.srt-error .srt-error-body h4{font-size:.96rem;font-weight:700;color:var(--danger-deep);line-height:1.35}
.srt-error .srt-error-body p{margin-top:3px;font-size:.9rem;line-height:1.55;color:var(--body-2)}
.srt-empty{display:flex;flex-direction:column;align-items:center;text-align:center;gap:14px;padding:50px 28px;border:1px dashed var(--sky-border);border-radius:16px;background:linear-gradient(180deg,var(--sky-bg),#fff)}
.srt-empty-ico{width:54px;height:54px;border-radius:15px;display:flex;align-items:center;justify-content:center;color:var(--sky-deep);background:#fff;border:1px solid var(--sky-border);box-shadow:var(--shadow-card)}
.srt-empty h3{font-size:1.1rem;font-weight:700;color:var(--ink);letter-spacing:-.01em}
.srt-empty p{font-size:.94rem;color:var(--body-2);max-width:46ch;line-height:1.6}

/* Pre-scan quick-start card (replaces the bare empty box) */
.srt-prescan{border:1px solid var(--line);border-radius:16px;background:#fff;box-shadow:var(--shadow-card);padding:22px 24px}
.srt-prescan-head{display:flex;align-items:flex-start;gap:13px;margin-bottom:16px}
.srt-prescan-ico{width:40px;height:40px;border-radius:11px;background:var(--sky-bg);color:var(--sky-deep);border:1px solid var(--sky-border);display:flex;align-items:center;justify-content:center;flex-shrink:0}
.srt-prescan-head h3{font-size:1.08rem;font-weight:700;color:var(--ink);letter-spacing:-.01em;line-height:1.25}
.srt-prescan-head p{font-size:.92rem;color:var(--body-2);margin-top:3px;line-height:1.5}
.srt-chips{display:flex;flex-wrap:wrap;gap:10px}
.srt-chip{display:inline-flex;align-items:center;gap:8px;font-family:'JetBrains Mono',monospace;font-size:.88rem;font-weight:500;color:var(--ink-2);background:#fff;border:1px solid var(--line);border-radius:10px;padding:9px 14px;cursor:pointer;transition:transform .15s,border-color .15s,background .15s,color .15s}
.srt-chip:hover{border-color:var(--sky-border);background:var(--sky-bg);color:var(--sky-deep);transform:translateY(-1px)}
.srt-chip:active{transform:translateY(0)}
.srt-chip svg{color:var(--muted-2);flex-shrink:0}
.srt-chip:hover svg{color:var(--sky)}
.srt-chip .srt-chip-tag{font-family:'Inter',sans-serif;font-size:.68rem;font-weight:700;text-transform:uppercase;letter-spacing:.04em;color:var(--success-deep);background:var(--success-bg);border:1px solid var(--success-border);padding:1px 6px;border-radius:5px}
.srt-prescan-intro{font-size:.92rem;color:var(--body-2);line-height:1.5;margin:-2px 0 14px}
.srt-chip-link{text-decoration:none;color:var(--ink-2)}
.srt-chip-link .sc-arrow{color:var(--muted-2);transition:transform .15s,color .15s}
.srt-chip-link:hover{color:var(--sky-deep)}
.srt-chip-link:hover .sc-arrow{color:var(--sky);transform:translateX(2px)}

/* ── Sidebar ───────────────────────────────────────────────────────── */
.srt-side{position:sticky;top:84px;display:grid;gap:16px}
@media (max-width:980px){.srt-side{position:static}}
.srt-side-card{border:1px solid var(--line);border-radius:14px;padding:16px 18px;background:#fff;box-shadow:var(--shadow-card)}
.srt-side-card h3{font-size:.72rem;text-transform:uppercase;letter-spacing:.07em;color:var(--muted-2);font-weight:700;margin-bottom:11px}
.srt-side-link{display:flex;align-items:center;gap:11px;padding:10px 0;border-bottom:1px solid var(--line-2);transition:transform .15s}
.srt-side-link:last-child{border-bottom:none}
.srt-side-link:hover{transform:translateX(2px)}
.srt-side-link .sl-ico{flex-shrink:0;width:32px;height:32px;border-radius:9px;display:flex;align-items:center;justify-content:center;background:var(--sky-bg);color:var(--sky-deep);border:1px solid var(--sky-border)}
.srt-side-link .sl-txt{min-width:0}
.srt-side-link .sl-txt strong{display:block;font-size:.9rem;font-weight:600;color:var(--ink-2);line-height:1.3}
.srt-side-link .sl-txt span{font-size:.78rem;color:var(--muted)}
.srt-side-link .sl-arrow{margin-left:auto;color:var(--muted-2);flex-shrink:0;transition:color .15s,transform .15s}
.srt-side-link:hover .sl-arrow{color:var(--sky);transform:translateX(2px)}

/* Unified sidebar card: related tools + a light reputation nudge footer */
.srt-side-unified{border:1px solid var(--line);border-radius:14px;background:#fff;box-shadow:var(--shadow-card);overflow:hidden}
.srt-side-unified .srt-side-pad{padding:15px 17px}
.srt-side-unified h3{font-size:.72rem;text-transform:uppercase;letter-spacing:.07em;color:var(--muted-2);font-weight:700;margin-bottom:10px}
.srt-nudge{display:flex;align-items:center;gap:11px;padding:13px 16px;background:linear-gradient(180deg,var(--sky-bg),#fff);border-top:1px solid var(--line)}
.srt-nudge .g{width:34px;height:34px;border-radius:10px;flex-shrink:0;display:flex;align-items:center;justify-content:center;font-family:'JetBrains Mono',monospace;font-weight:700;color:#fff;background:linear-gradient(140deg,var(--sky),var(--sky-600));box-shadow:0 8px 16px -8px rgba(14,165,233,.6)}
.srt-nudge .t{flex:1;min-width:0}
.srt-nudge .t strong{display:block;font-size:.86rem;color:var(--ink);line-height:1.25}
.srt-nudge .t a{font-size:.82rem;font-weight:600;color:var(--sky-deep);display:inline-flex;align-items:center;gap:5px;margin-top:1px}
.srt-nudge .t a:hover{color:var(--sky-600)}
.srt-nudge .t a svg{transition:transform .15s}
.srt-nudge .t a:hover svg{transform:translateX(2px)}

.srt-cta-card{border-radius:16px;padding:22px 20px;background:linear-gradient(150deg,#0F172A,#1E293B);color:#fff;position:relative;overflow:hidden;box-shadow:0 24px 44px -26px rgba(2,8,23,.8)}
.srt-cta-card::before{content:'';position:absolute;inset:0;background:
  radial-gradient(circle at 85% 8%,rgba(14,165,233,.45),transparent 55%),
  radial-gradient(circle at 8% 95%,rgba(56,189,248,.22),transparent 50%);opacity:.85}
.srt-cta-body{position:relative;z-index:1}
.srt-cta-grade{display:inline-flex;align-items:center;gap:8px;margin-bottom:12px}
.srt-cta-grade .g{width:38px;height:38px;border-radius:11px;display:flex;align-items:center;justify-content:center;font-family:'JetBrains Mono',monospace;font-weight:700;font-size:1.1rem;color:#fff;background:linear-gradient(140deg,var(--sky),var(--sky-600));box-shadow:0 8px 18px -8px rgba(14,165,233,.7)}
.srt-cta-grade .scale{font-family:'JetBrains Mono',monospace;font-size:.78rem;color:#7C8AA5;letter-spacing:.04em}
.srt-cta-card h4{font-size:1.08rem;font-weight:700;color:#fff;line-height:1.3;margin-bottom:6px}
.srt-cta-card p{font-size:.86rem;color:#CBD5E1;line-height:1.55;margin-bottom:15px}
.srt-cta-card a.cta-btn{display:inline-flex;align-items:center;gap:8px;font-size:.9rem;font-weight:600;color:var(--ink);background:#fff;padding:11px 16px;border-radius:10px;transition:transform .15s,box-shadow .15s}
.srt-cta-card a.cta-btn:hover{color:var(--ink);transform:translateY(-1px);box-shadow:0 12px 22px -10px rgba(0,0,0,.5)}

/* ── Article / SEO prose ───────────────────────────────────────────── */
.srt-article{padding:3rem 0 1rem;background:#fff}
.srt-article-inner{max-width:760px;margin:0 auto}
.srt-kicker{display:inline-flex;align-items:center;gap:7px;font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--sky-deep);margin-bottom:1rem}
.srt-kicker::before{content:'';width:18px;height:2px;background:var(--sky);border-radius:2px}
.srt-article h2{font-size:clamp(1.4rem,3vw,1.8rem);letter-spacing:-.02em;color:var(--ink);font-weight:800;line-height:1.2;margin:2.2rem 0 .9rem}
.srt-article h2:first-of-type{margin-top:0}
.srt-article h3{font-size:1.18rem;letter-spacing:-.01em;color:var(--ink);font-weight:700;margin:1.8rem 0 .7rem}
.srt-article p{font-size:1.02rem;line-height:1.75;color:var(--body);margin-bottom:1.05rem}
.srt-article p a,.srt-article li a{color:var(--sky-deep);text-decoration:underline;text-decoration-color:var(--sky-border);text-underline-offset:2px}
.srt-article p a:hover,.srt-article li a:hover{text-decoration-color:var(--sky)}
.srt-article code{font-family:'JetBrains Mono',monospace;font-size:.86em;background:var(--sky-bg);color:var(--sky-deep);border:1px solid var(--sky-border);padding:1px 6px;border-radius:6px;white-space:nowrap}
.srt-article ul.rc{list-style:none;margin:0 0 1.3rem;padding:0;display:grid;gap:9px}
.srt-article ul.rc li{position:relative;padding:11px 15px 11px 40px;background:var(--surface-2);border:1px solid var(--line-2);border-radius:11px;font-size:.97rem;line-height:1.6;color:var(--body)}
.srt-article ul.rc li::before{content:'';position:absolute;left:16px;top:1.15em;width:8px;height:8px;border-radius:2px;background:var(--sky);transform:rotate(45deg)}
.srt-article ul.rc li strong{color:var(--ink)}
.srt-article ol.steps{counter-reset:st;list-style:none;margin:0 0 1.3rem;padding:0;display:grid;gap:10px}
.srt-article ol.steps li{counter-increment:st;position:relative;padding:13px 16px 13px 50px;background:#fff;border:1px solid var(--line);border-radius:12px;font-size:.97rem;line-height:1.6;color:var(--body);box-shadow:var(--shadow-card)}
.srt-article ol.steps li::before{content:counter(st);position:absolute;left:14px;top:14px;width:24px;height:24px;border-radius:7px;background:linear-gradient(140deg,var(--sky),var(--sky-600));color:#fff;font-family:'JetBrains Mono',monospace;font-size:.82rem;font-weight:600;display:flex;align-items:center;justify-content:center}
.srt-article ol.steps li strong{color:var(--ink)}
.srt-callout{display:flex;gap:13px;align-items:flex-start;margin:1.6rem 0;padding:16px 18px;border-radius:13px;background:var(--sky-bg);border:1px solid var(--sky-border)}
.srt-callout svg{flex-shrink:0;color:var(--sky-deep);margin-top:2px}
.srt-callout p{margin:0;font-size:.95rem;color:var(--sky-deep);line-height:1.6}
.srt-callout p a{color:var(--sky-deep);font-weight:600;text-decoration:underline}
.srt-article .srt-table-scroll{margin:0 0 1.3rem}

/* ── FAQ ───────────────────────────────────────────────────────────── */
.srt-faq-section{padding:1rem 0 3.6rem;background:#fff}
.srt-faq-inner{max-width:760px;margin:0 auto}
.srt-faq-h{font-size:clamp(1.4rem,3vw,1.8rem);letter-spacing:-.02em;color:var(--ink);font-weight:800;margin-bottom:1.3rem;line-height:1.2}
.srt-faq-grid{display:grid;gap:11px}
.srt-faq-item{border:1px solid var(--line);border-radius:14px;padding:18px 20px;background:#fff;transition:border-color .15s,box-shadow .15s}
.srt-faq-item:hover{border-color:var(--sky-border);box-shadow:0 12px 26px -20px rgba(15,23,42,.3)}
.srt-faq-q{display:flex;gap:11px;font-weight:700;color:var(--ink);font-size:1.04rem;line-height:1.4;margin-bottom:9px}
.srt-faq-q::before{content:'Q';font-family:'JetBrains Mono',monospace;font-size:.78rem;font-weight:700;color:var(--sky-deep);background:var(--sky-bg);border:1px solid var(--sky-border);border-radius:7px;width:24px;height:24px;display:inline-flex;align-items:center;justify-content:center;flex-shrink:0}
.srt-faq-a{font-size:.96rem;line-height:1.68;color:var(--body-2);padding-left:35px}
.srt-faq-a a{color:var(--sky-deep);text-decoration:underline;text-decoration-color:var(--sky-border);text-underline-offset:2px}
.srt-faq-a code{font-family:'JetBrains Mono',monospace;font-size:.85em;background:var(--surface-2);color:var(--ink-2);border:1px solid var(--line);padding:1px 5px;border-radius:5px;white-space:nowrap}

@media (prefers-reduced-motion:reduce){
  .srt-reveal{opacity:1!important;transform:none!important;transition:none!important}
  .srt-meter-fill{transition:none!important}
  .srt-btn-primary:hover,.srt-cta-card a.cta-btn:hover,.srt-side-link:hover{transform:none!important}
  .srt-spinner{animation-duration:1.4s}
}

/* ============================================================ *
 *  Content rail: left-justify the article and add a sticky      *
 *  right rail of configurable blocks (see srt_rail in PHP).      *
 *  Scoped to .srt-article-grid so pages without it are untouched.*
 * ============================================================ */
.srt-article-grid{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:40px;align-items:start}
.srt-article-grid>.srt-article-inner{margin-left:0;margin-right:0}
.srt-article:has(.srt-article-grid) ~ .srt-faq-section .srt-faq-inner{margin-left:0;margin-right:auto}
@media (max-width:980px){.srt-article-grid{grid-template-columns:1fr}.srt-rail{display:none}}

.srt-rail{position:sticky;top:88px;align-self:start;display:flex;flex-direction:column;gap:15px}
.srt-rail-card{position:relative;background:#fff;border:1px solid var(--line);border-radius:16px;padding:19px;box-shadow:0 14px 32px -26px rgba(15,23,42,.55)}
.srt-rail-card h4{font-size:.7rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin-bottom:13px;font-weight:700;display:flex;align-items:center;gap:8px}
.srt-rail-card h4 svg{color:var(--sky-deep);flex-shrink:0}
.srt-rail-more{display:inline-flex;align-items:center;gap:5px;margin-top:14px;font-size:.84rem;font-weight:600;color:var(--sky-deep);text-decoration:none}
.srt-rail-more:hover{text-decoration:underline}

/* on this page */
.srt-rail-prog{height:4px;border-radius:3px;background:var(--surface-2);overflow:hidden;margin-bottom:14px}
.srt-rail-prog i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--sky),var(--sky-deep));border-radius:3px;transition:width .12s}
.srt-rail-toc a{display:block;padding:7px 0 7px 13px;font-size:.88rem;color:var(--body-2);text-decoration:none;border-left:2px solid var(--line-2);margin-left:-1px;transition:color .15s,border-color .15s}
.srt-rail-toc a:hover{color:var(--sky-deep)}
.srt-rail-toc a.active{color:var(--ink);border-left-color:var(--sky);font-weight:600}

/* by the numbers */
.srt-rnums{display:grid;grid-template-columns:1fr 1fr;gap:9px}
.srt-rnum{background:var(--surface-2);border:1px solid var(--line);border-radius:12px;padding:13px 8px;text-align:center}
.srt-rnum b{display:block;font-family:'JetBrains Mono',monospace;font-size:1.4rem;font-weight:800;color:var(--sky-deep);line-height:1}
.srt-rnum span{display:block;margin-top:5px;font-size:.72rem;color:var(--muted);line-height:1.25}

/* what good looks like */
.srt-rgood{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.srt-rgood li{position:relative;padding-left:26px;font-size:.85rem;line-height:1.45;color:var(--body)}
.srt-rgood li svg{position:absolute;left:0;top:1px;color:var(--success-deep)}
.srt-rgood li b{color:var(--ink);font-weight:600}

/* key terms */
.srt-rterms dl{margin:0}
.srt-rterms dt{font-family:'JetBrains Mono',monospace;font-weight:700;font-size:.81rem;color:var(--ink);margin-top:11px}
.srt-rterms dt:first-child{margin-top:0}
.srt-rterms dd{margin:3px 0 0;font-size:.83rem;line-height:1.5;color:var(--body-2)}

/* tool launcher */
.srt-rlaunch{background:linear-gradient(165deg,#fff,#eff6ff);border-color:var(--sky-border)}
.srt-rlaunch p{font-size:.85rem;color:var(--body-2);line-height:1.5;margin-bottom:12px}
.srt-rlaunch form{display:flex;flex-direction:column;gap:9px}
.srt-rlaunch input{border:1px solid var(--line);border-radius:10px;padding:11px 13px;font-size:.9rem;color:var(--ink);width:100%}
.srt-rlaunch button{display:flex;align-items:center;justify-content:center;gap:7px;background:linear-gradient(135deg,var(--sky,#0ea5e9),var(--sky-deep,#0369a1));color:#fff;border-radius:10px;padding:11px 0;font-weight:700;font-size:.9rem;cursor:pointer}
.srt-rlaunch-note{display:flex;align-items:center;gap:6px;margin-top:10px;font-size:.73rem;color:var(--muted)}

/* embed badge */
.srt-rembed p{font-size:.84rem;line-height:1.5;color:var(--body-2);margin-bottom:12px}
.srt-rembed-prev{background:linear-gradient(160deg,#f8fafc,#eef2ff);border:1px solid var(--line);border-radius:12px;padding:13px;display:flex;align-items:center;gap:11px;margin-bottom:12px}
.srt-rembed-prev .g{width:38px;height:38px;border-radius:10px;background:#fff;border:1px solid var(--sky-border);color:var(--sky-deep);font-family:'JetBrains Mono',monospace;font-weight:800;font-size:1rem;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.srt-rembed-prev b{display:block;font-size:.8rem;color:var(--ink)}
.srt-rembed-prev span{font-size:.71rem;color:var(--muted)}
.srt-rembed code{display:block;background:#0f172a;border-radius:9px;padding:10px 11px;overflow:auto;font-family:'JetBrains Mono',monospace;font-size:.7rem;color:#7dd3fc;white-space:nowrap}