/* mobile-auth — page styles (extracted from inline <style>). */
  /* ── Mobile Auth hero — Variation B (Channel chooser grid) ──
     Built on v5 tokens. Local-only classes namespaced with `mob-` */
  .mob-hero {
    padding: clamp(72px, 10vh, 112px) 0 clamp(48px, 8vh, 80px);
    background: var(--bg);
    border-bottom: 1px solid var(--hairline);
    position: relative;
    overflow: hidden;
  }
  .mob-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse 50% 40% at 80% 20%, rgba(79,70,229,0.05) 0%, transparent 70%);
    pointer-events: none;
  }
  .mob-hero-inner {
    position: relative; z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: clamp(48px, 5vw, 88px);
    align-items: center;
  }
  .mob-hero-left {
    display: flex; flex-direction: column; align-items: flex-start;
  }
  .mob-hero-left .eyebrow { margin-bottom: var(--sp-6); }
  .mob-h1 {
    font-family: var(--font-sans);
    font-size: clamp(40px, 5.4vw, 64px);
    font-weight: var(--weight-semibold);
    line-height: 1.02;
    letter-spacing: -0.034em;
    color: var(--text-strong);
    margin-bottom: var(--sp-5);
  }
  .mob-h1 .mute { color: var(--g8); display: block; }
  .mob-lead {
    font-size: var(--text-md);
    line-height: 1.65;
    color: var(--g9);
    max-width: 52ch;
    margin-bottom: var(--sp-8);
  }
  .mob-actions {
    display: flex; gap: var(--sp-3); flex-wrap: wrap;
    margin-bottom: var(--sp-6);
  }

  /* Right side — 2×2 channel grid */
  .mob-ch-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-3);
    width: 100%;
    max-width: 540px;
    margin-left: auto;
  }
  .mob-ch {
    background: var(--bg);
    border: 1px solid var(--hairline);
    border-radius: var(--r-md);
    padding: var(--sp-6);
    display: flex; flex-direction: column;
    min-height: 160px;
    transition: all 200ms ease;
  }
  .mob-ch-ic {
    width: 40px; height: 40px; border-radius: var(--r-sm);
    background: var(--s2); border: 1px solid var(--hairline);
    display: grid; place-items: center; color: var(--g8);
    margin-bottom: var(--sp-4);
    transition: all 200ms ease;
  }
  .mob-ch-ic > i[data-lucide], .mob-ch-ic > svg.lucide { width: 20px; height: 20px; stroke-width: 1.6; }
  .mob-ch--primary .mob-ch-ic { background: var(--accent); border-color: var(--accent); color: #FFF; }
  .mob-ch:hover {
    border-color: var(--accent-mid);
    box-shadow: 0 4px 20px rgba(14,14,12,0.04);
  }
  .mob-ch--primary {
    border-color: var(--accent-mid);
    background: var(--accent-soft);
    box-shadow: 0 8px 32px -12px rgba(79,70,229,0.16);
  }
  .mob-ch-head {
    display: flex; align-items: center; gap: var(--sp-2); justify-content: space-between;
    margin-bottom: var(--sp-2);
  }
  .mob-ch-name {
    font-family: var(--font-sans); font-size: 17px; font-weight: 600;
    letter-spacing: -0.012em;
    color: var(--text-strong);
  }
  .mob-ch--primary .mob-ch-name { color: var(--accent); }
  .mob-ch-tag {
    font-family: var(--font-mono); font-size: 9px;
    padding: 2px 8px; background: var(--s2);
    border-radius: 100px; color: var(--g7);
    text-transform: uppercase; letter-spacing: 0.08em;
    font-weight: 600;
  }
  .mob-ch--primary .mob-ch-tag {
    background: var(--accent);
    color: #FFF;
  }
  .mob-ch-stat {
    font-family: var(--font-sans); font-size: 14px;
    font-weight: 500; letter-spacing: -0.005em;
    color: var(--g9); line-height: 1.5;
    margin-top: var(--sp-3); margin-bottom: 0;
  }
  .mob-ch--primary .mob-ch-stat { color: var(--text); }
  .mob-ch-lbl {
    display: none;
  }

  @media (max-width: 960px) {
    .mob-hero-inner { grid-template-columns: 1fr; }
    .mob-ch-grid { max-width: 100%; margin-left: 0; }
  }
  @media (max-width: 520px) {
    /* 2-column channel grid is too narrow at 375px — name + badge overflow
       the 113px column. Single column gives each card the full width. */
    .mob-ch-grid { grid-template-columns: 1fr; }
    .mob-ch { min-height: auto; padding: var(--sp-5); }
    /* Allow the badge to wrap below the name on narrow cards */
    .mob-ch-head { flex-wrap: wrap; gap: var(--sp-1); }
    .mob-ch-name { font-size: 15px; }
  }

  /* ── How Mobile Auth decides ────────────────────────
     v5-token port of the original decision-engine panel.
     Driven by smart-auth-decision.js. */
  .dec-section {
    padding: clamp(64px, 9vh, 96px) 0;
    background: var(--bg);
    border-bottom: 1px solid var(--hairline);
  }
  .dec-head-row { max-width: 720px; margin-bottom: var(--sp-12); }
  .dec-h2 {
    font-family: var(--font-sans);
    font-size: clamp(32px, 4vw, 48px);
    font-weight: var(--weight-semibold);
    line-height: 1.05; letter-spacing: -0.030em;
    color: var(--text-strong); margin-bottom: var(--sp-4);
  }
  .dec-h2 .mute { color: var(--g8); }
  .dec-lead { font-size: var(--text-md); line-height: 1.65; color: var(--g9); max-width: 56ch; }

  .decision {
    border: 1px solid var(--hairline);
    border-radius: var(--r-md);
    background: var(--bg);
    overflow: hidden;
  }
  .dec-head {
    padding: var(--sp-4) var(--sp-6);
    border-bottom: 1px solid var(--hairline);
    display: flex; justify-content: space-between; align-items: center;
    font-family: var(--font-mono); font-size: 11px;
    color: var(--g8); text-transform: uppercase; letter-spacing: 0.08em;
    background: var(--bg-subtle);
    font-weight: 600;
  }
  .dec-head .right { display: flex; align-items: center; gap: 8px; color: var(--accent); }
  .dec-head .right .ping {
    width: 6px; height: 6px; border-radius: 50%; background: var(--accent);
    animation: dec-pulse 1.6s infinite;
  }
  @keyframes dec-pulse { 0%,100% { opacity:1; } 50% { opacity:0.4; } }

  .dec-body {
    display: grid;
    grid-template-columns: 1fr 40px 1fr 40px 1fr;
    gap: 0;
    padding: var(--sp-8) var(--sp-6);
    align-items: stretch;
    min-height: 380px;
  }
  @media (max-width: 980px) {
    .dec-body { grid-template-columns: 1fr; gap: var(--sp-6); padding: var(--sp-6); }
  }
  .dec-col { display: flex; flex-direction: column; gap: var(--sp-3); }
  .dec-col-label {
    font-family: var(--font-mono); font-size: 10px;
    color: var(--g7); letter-spacing: 0.10em; text-transform: uppercase;
    margin-bottom: var(--sp-2); font-weight: 600;
  }
  .dec-col-label b { color: var(--accent); font-weight: 600; margin-right: 6px; }

  .dec-signals { gap: 8px; }
  .sig {
    display: grid; grid-template-columns: 110px 1fr;
    align-items: center; gap: 10px;
    padding: 10px 12px;
    border: 1px solid var(--hairline);
    border-radius: var(--r-sm);
    background: var(--bg);
    font-family: var(--font-mono); font-size: 11px;
    color: var(--text-strong); transition: all 0.4s ease; opacity: 0.5;
  }
  .sig.active {
    border-color: var(--accent-mid);
    background: var(--accent-soft);
    opacity: 1;
  }
  .sig .k { color: var(--g7); text-transform: uppercase; letter-spacing: 0.05em; font-size: 10px; }
  .sig .v { color: var(--text-strong); font-weight: 600; }
  .sig.active .v { color: var(--accent); }

  .dec-engine {
    border: 1px solid var(--hairline);
    border-radius: var(--r-sm);
    background: #0F0F0F;
    color: #FFF;
    display: flex; flex-direction: column; overflow: hidden;
    min-height: 260px;
  }
  .engine-head {
    display: flex; align-items: center; gap: 10px;
    padding: 12px 14px;
    border-bottom: 1px solid rgba(255,255,255,0.06);
    font-family: var(--font-mono); font-size: 10px;
    color: rgba(255,255,255,0.6); letter-spacing: 0.08em; text-transform: uppercase;
  }
  .engine-head .engine-title-sm { color: #FFF; flex: 1; font-weight: 600; }
  .engine-head .engine-elapsed { color: #A5B4FC; font-variant-numeric: tabular-nums; }
  .engine-pulse {
    width: 8px; height: 8px; border-radius: 50%;
    background: #22C55E;
    animation: dec-pulse 1.4s ease-in-out infinite;
  }
  .engine-trace {
    flex: 1; padding: 14px;
    font-family: var(--font-mono); font-size: 11px; line-height: 1.7;
    color: rgba(255,255,255,0.7);
    overflow: hidden; display: flex; flex-direction: column; gap: 4px;
  }
  .trace-evt {
    display: grid; grid-template-columns: 56px 14px 1fr; gap: 8px;
    align-items: baseline;
    opacity: 0; transform: translateY(4px);
    animation: traceIn 0.3s ease forwards;
  }
  .trace-evt .ts { color: rgba(255,255,255,0.45); font-size: 10px; }
  .trace-evt .ic { color: #A5B4FC; font-weight: 600; }
  .trace-evt .tx { color: rgba(255,255,255,0.75); }
  .trace-evt .tx b { color: #FFF; font-weight: 500; }
  .trace-evt.fail .ic { color: #FF6B6B; }
  .trace-evt.win  .ic { color: #86EFAC; }
  .trace-evt.win  .tx b { color: #86EFAC; }
  @keyframes traceIn { to { opacity: 1; transform: translateY(0); } }

  .dec-result { gap: 16px; }
  .result-card {
    border: 1px solid var(--accent-mid);
    border-radius: var(--r-sm);
    background: var(--accent-soft);
    padding: var(--sp-5);
  }
  .result-channel {
    display: flex; align-items: center; gap: 12px; margin-bottom: 14px;
  }
  .result-channel .pill {
    padding: 5px 10px; border-radius: 100px;
    background: var(--accent); color: #FFF;
    font-family: var(--font-mono); font-size: 10px;
    letter-spacing: 0.06em; text-transform: uppercase; font-weight: 600;
  }
  .result-channel .name {
    font-family: var(--font-sans); font-size: 20px; font-weight: 600;
    letter-spacing: -0.018em; color: var(--text-strong);
  }
  .result-channel .name em { font-style: italic; font-weight: 500; }
  .result-because {
    font-family: var(--font-mono); font-size: 11.5px; line-height: 1.6;
    color: var(--g9);
  }
  .result-because b { color: var(--text-strong); font-weight: 600; }
  .result-meta {
    display: flex; gap: 16px; margin-top: 16px; padding-top: 14px;
    border-top: 1px dashed var(--accent-mid);
  }
  .result-meta .m {
    font-family: var(--font-mono); font-size: 10px;
    color: var(--g7); text-transform: uppercase; letter-spacing: 0.08em;
  }
  .result-meta .m b {
    display: block; color: var(--accent); font-size: 13px;
    margin-top: 4px; text-transform: none; letter-spacing: 0;
    font-weight: 600;
  }
  .result-pool {
    border: 1px solid var(--hairline);
    border-radius: var(--r-sm);
    padding: 12px 14px;
    background: var(--bg);
  }
  .result-pool-label {
    font-family: var(--font-mono); font-size: 9.5px; color: var(--g7);
    letter-spacing: 0.10em; text-transform: uppercase; margin-bottom: 10px;
    font-weight: 600;
  }
  .pool-row {
    display: grid; grid-template-columns: 78px 18px 1fr; gap: 10px;
    align-items: baseline; padding: 6px 0;
    font-family: var(--font-mono); font-size: 11px;
    border-top: 1px dashed var(--hairline);
    transition: all 0.3s ease;
  }
  .pool-row:first-of-type { border-top: 0; }
  .pool-row .ch  { color: var(--text-strong); font-weight: 600; }
  .pool-row .ver { font-weight: 700; color: var(--g9); }
  .pool-row .why { color: var(--g8); font-size: 10.5px; }
  .pool-row[data-state="win"] .ver { color: var(--accent); }
  .pool-row[data-state="win"] .ch  { color: var(--accent); }
  .pool-row[data-state="out"] .ver { color: #C03A3A; }
  .pool-row[data-state="out"] .ch  { color: var(--g7); }
  .pool-row[data-state="ok"]  .ver { color: var(--g8); }

  .dec-arrow {
    display: flex; align-items: center; justify-content: center;
    color: var(--accent); opacity: 0.5;
  }
  @media (max-width: 980px) {
    .dec-arrow { transform: rotate(90deg); height: 24px; }
  }

  .scenarios {
    border-top: 1px solid var(--hairline);
    padding: var(--sp-4) var(--sp-6);
    display: flex; gap: 8px; flex-wrap: wrap; align-items: center;
    background: var(--bg-subtle);
  }
  .scenarios-label {
    font-family: var(--font-mono); font-size: 10px; color: var(--g7);
    letter-spacing: 0.08em; text-transform: uppercase; margin-right: 8px; font-weight: 600;
  }
  .scen-btn {
    background: var(--bg); border: 1px solid var(--hairline);
    color: var(--g8);
    padding: 9px 14px; border-radius: var(--r-sm);
    font-family: var(--font-mono); font-size: 11px;
    text-transform: uppercase; letter-spacing: 0.04em;
    cursor: pointer; transition: all 0.15s;
    min-height: 40px;
  }
  .scen-btn:hover { border-color: var(--accent-mid); color: var(--text-strong); }
  .scen-btn.active {
    background: var(--accent); color: #FFF; border-color: var(--accent);
  }

  /* ── Channel pool (Variation B — hairline editorial rows) ── */
  .cp {
    padding: clamp(64px, 9vh, 96px) 0;
    background: var(--bg-subtle);
    border-bottom: 1px solid var(--hairline);
  }
  .cp-head { margin-bottom: var(--sp-12); max-width: 720px; }
  .cp-h2 {
    font-family: var(--font-sans); font-size: clamp(32px, 4vw, 48px);
    font-weight: var(--weight-semibold); line-height: 1.05; letter-spacing: -0.030em;
    color: var(--text-strong); margin-bottom: var(--sp-4);
  }
  .cp-h2 .mute { color: var(--g8); }
  .cp-lead { font-size: var(--text-md); line-height: 1.65; color: var(--g9); max-width: 56ch; }

  .cp-list { border-top: 1px solid var(--hairline-strong); }
  .cp-row {
    border-bottom: 1px solid var(--hairline);
    padding: var(--sp-6) 0;
    display: grid; grid-template-columns: 56px 1fr 1.5fr 0.8fr 0.8fr;
    gap: var(--sp-6); align-items: center;
    text-decoration: none; color: inherit;
  }
  a.cp-row {
    transition: background-color 200ms ease;
    position: relative;
  }
  a.cp-row::after {
    content: "→";
    position: absolute; top: 50%; right: -36px;
    transform: translate(8px, -50%);
    font-family: var(--font-mono); font-size: 16px;
    color: var(--accent); opacity: 0;
    transition: opacity 200ms ease, transform 200ms ease;
    pointer-events: none;
  }
  @media (max-width: 600px) {
    a.cp-row::after { display: none; }
    .cp-list { overflow: hidden; }
  }
  a.cp-row:hover { background-color: var(--bg); }
  a.cp-row:hover::after { opacity: 1; transform: translate(0, -50%); }
  a.cp-row:hover .cp-row-name { color: var(--accent); }
  .cp-row-name { transition: color 200ms ease; }
  .cp-row-icon {
    width: 36px; height: 36px; border-radius: var(--r-sm);
    background: var(--accent-soft); border: 1px solid var(--accent-mid);
    display: grid; place-items: center; color: var(--accent);
  }
  .cp-row-name {
    font-family: var(--font-sans); font-size: 17px; font-weight: 600;
    color: var(--text-strong); letter-spacing: -0.012em;
  }
  .cp-row-mark {
    font-family: var(--font-mono); font-size: 10px; color: var(--accent);
    letter-spacing: 0.10em; text-transform: uppercase; font-weight: 600;
    margin-top: 4px;
  }
  .cp-row-desc { font-size: 13.5px; color: var(--g9); line-height: 1.6; }
  .cp-row-stat {
    font-family: var(--font-sans); font-size: 22px; font-weight: 700;
    color: var(--text-strong); letter-spacing: -0.025em;
  }
  .cp-row-stat-lbl {
    font-family: var(--font-mono); font-size: 10px;
    color: var(--g7); letter-spacing: 0.08em;
    text-transform: uppercase; margin-top: 2px;
  }
  .cp-row-tags { display: flex; gap: 4px; flex-wrap: wrap; justify-content: flex-end; }
  .cp-pill {
    display: inline-flex; align-items: center; gap: 5px;
    padding: 3px 8px; background: var(--accent-soft);
    border: 1px solid var(--accent-mid); border-radius: 100px;
    font-family: var(--font-mono); font-size: 9.5px;
    color: var(--accent); letter-spacing: 0.06em;
    text-transform: uppercase; font-weight: 600;
  }
  .cp-pill .ping { width: 4px; height: 4px; border-radius: 50%; background: var(--accent); animation: dec-pulse 1.6s infinite; }
  .cp-pill--alt { background: var(--s2); border-color: var(--hairline); color: var(--g8); }
  @media (max-width: 1080px) {
    .cp-row { grid-template-columns: 56px 1fr; }
    .cp-row > *:nth-child(n+3) { grid-column: 2; }
    .cp-row-tags { justify-content: flex-start; }
  }

  /* ── The feedback loop ──────────────────────────────── */
  .fbl {
    padding: clamp(64px, 9vh, 96px) 0;
    background: var(--bg);
    border-bottom: 1px solid var(--hairline);
  }
  .fbl-grid {
    display: grid; grid-template-columns: 1fr 1.2fr;
    gap: clamp(48px, 5vw, 88px); align-items: center;
  }
  .fbl-h2 {
    font-family: var(--font-sans); font-size: clamp(32px, 4vw, 48px);
    font-weight: var(--weight-semibold); line-height: 1.05; letter-spacing: -0.030em;
    color: var(--text-strong); margin-bottom: var(--sp-5);
  }
  .fbl-h2 .acc { color: var(--accent); }
  .fbl-p { font-size: var(--text-base); line-height: 1.7; color: var(--g9); max-width: 44ch; margin-bottom: var(--sp-4); }
  .fbl-note {
    font-family: var(--font-mono); font-size: 12px; color: var(--g7);
    letter-spacing: 0.04em; margin-top: var(--sp-5);
  }
  /* panel */
  .fbl-panel {
    border: 1px solid var(--hairline);
    border-radius: var(--r-md);
    background: var(--bg-subtle);
    padding: var(--sp-6);
  }
  .fbl-panel-head {
    display: flex; align-items: center; justify-content: space-between;
    padding-bottom: var(--sp-4); margin-bottom: var(--sp-5);
    border-bottom: 1px solid var(--hairline);
  }
  .fbl-panel-title {
    font-family: var(--font-mono); font-size: 11px;
    letter-spacing: 0.10em; text-transform: uppercase; color: var(--g8); font-weight: 600;
  }
  .fbl-panel-live {
    display: inline-flex; align-items: center; gap: 6px;
    font-family: var(--font-mono); font-size: 11px;
    letter-spacing: 0.08em; text-transform: uppercase;
    color: var(--accent); font-weight: 600;
  }
  .fbl-panel-live .ping { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); animation: dec-pulse 1.6s infinite; }
  .fbl-chan {
    display: grid; grid-template-columns: 92px 1fr 56px 48px;
    align-items: center; gap: var(--sp-4);
    padding: var(--sp-4) 0;
    border-bottom: 1px solid var(--hairline);
  }
  .fbl-chan:last-of-type { border-bottom: none; }
  .fbl-chan-name {
    font-family: var(--font-mono); font-size: 12px;
    letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-strong); font-weight: 600;
  }
  .fbl-chan.voice .fbl-chan-name { color: #B5651D; }
  .fbl-chan svg { width: 100%; height: 28px; display: block; }
  .fbl-chan-success {
    font-family: var(--font-mono); font-size: 13px; font-weight: 600;
    color: var(--accent); text-align: right;
  }
  .fbl-chan.voice .fbl-chan-success { color: #B5651D; }
  .fbl-chan-share {
    font-family: var(--font-mono); font-size: 12px; color: var(--g7); text-align: right;
  }
  .fbl-callout {
    margin-top: var(--sp-5);
    padding: var(--sp-4) var(--sp-5);
    background: rgba(22,163,74,0.06);
    border: 1px solid rgba(22,163,74,0.20);
    border-radius: var(--r-sm);
    font-family: var(--font-mono); font-size: 12px; line-height: 1.6;
    color: var(--g9);
  }
  .fbl-callout b { color: var(--accent); font-weight: 600; }
  @media (max-width: 960px) {
    .fbl-grid { grid-template-columns: 1fr; }
  }

  /* ── Customer proof ──────────────────────────────── */
  .prf { padding: clamp(64px, 9vh, 96px) 0; background: var(--bg-subtle); border-bottom: 1px solid var(--hairline); }
  .prf-grid {
    display: grid; grid-template-columns: 1.6fr 1fr;
    gap: var(--sp-12); align-items: center;
    background: var(--bg); border: 1px solid var(--hairline-strong);
    border-radius: var(--r-md); padding: clamp(48px, 6vw, 80px);
  }
  .prf-quote-mark { font-family: var(--font-sans); font-size: 56px; font-weight: 600; color: var(--accent); line-height: 0.5; margin-bottom: var(--sp-4); height: 36px; }
  .prf-quote { font-family: var(--font-sans); font-size: clamp(22px, 2.4vw, 28px); font-weight: 500; line-height: 1.45; letter-spacing: -0.018em; color: var(--text-strong); margin: 0 0 var(--sp-8); max-width: 36ch; }
  .prf-attr { display: flex; align-items: center; gap: var(--sp-4); }
  .prf-avatar { width: 48px; height: 48px; border-radius: 50%; background: var(--accent); color: #FFF; display: grid; place-items: center; font-family: var(--font-sans); font-size: 16px; font-weight: 600; letter-spacing: -0.015em; flex-shrink: 0; }
  .prf-name { font-family: var(--font-sans); font-size: 15px; font-weight: 600; color: var(--text-strong); letter-spacing: -0.005em; }
  .prf-role { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--g7); margin-top: 2px; }
  .prf-stats { display: flex; flex-direction: column; gap: var(--sp-7); padding-left: var(--sp-10); border-left: 1px solid var(--hairline); }
  .prf-stat-num { font-family: var(--font-sans); font-size: clamp(36px, 4vw, 48px); font-weight: 700; letter-spacing: -0.035em; color: var(--accent); line-height: 1; margin-bottom: var(--sp-2); }
  .prf-stat-lbl { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--g7); font-weight: 600; }
  @media (max-width: 880px) {
    .prf-grid { grid-template-columns: 1fr; }
    .prf-stats { padding-left: 0; padding-top: var(--sp-6); border-left: none; border-top: 1px solid var(--hairline); flex-direction: row; flex-wrap: wrap; gap: var(--sp-6); }
    .prf-stats > div { flex: 1 1 30%; min-width: 140px; }
  }