/* Board Challenge — app styles
   Self-contained: no theme CSS required. */

:root{
  --bc-primary:#1d4ed8;
  --bc-accent:#0ea5e9;
  --bc-radius:16px;
  --bc-ink:#0f172a;
  --bc-ink-2:#334155;
  --bc-muted:#64748b;
  --bc-line:#e2e8f0;
  --bc-bg:#f6f8fc;
  --bc-card:#ffffff;
  --bc-soft:#eff4ff;
  --bc-panel:#f0f4fb;
  --bc-green:#16a34a;
  --bc-amber:#f59e0b;
  --bc-red:#e11d48;
  --bc-shadow:0 1px 2px rgba(15,23,42,.04), 0 8px 24px rgba(15,23,42,.06);
  --bc-shadow-lg:0 20px 50px rgba(15,23,42,.12);
  --bc-font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif;
  --bc-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
  --bc-max:1160px;
}
html[data-bc-theme="dark"]{
  --bc-ink:#e8eefc; --bc-ink-2:#c2cde3; --bc-muted:#93a3bd;
  --bc-line:#22304a; --bc-bg:#0b1220; --bc-card:#111a2b; --bc-soft:#16233a; --bc-panel:#0e1729;
  --bc-shadow:0 1px 2px rgba(0,0,0,.3), 0 8px 24px rgba(0,0,0,.35);
  --bc-shadow-lg:0 20px 50px rgba(0,0,0,.5);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:86px}
body.bc-body{
  margin:0;background:var(--bc-bg);color:var(--bc-ink);
  font-family:var(--bc-font);font-size:16px;line-height:1.65;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--bc-primary);text-decoration:none}
h1,h2,h3,h4{margin:0 0 .4em;line-height:1.22;letter-spacing:-.02em;font-weight:750}
p{margin:0 0 1em}
button{font-family:inherit}
.bc-i{flex:none;vertical-align:middle}
.bc-wrap{width:100%;max-width:var(--bc-max);margin:0 auto;padding:0 18px}
.bc-skip{position:absolute;left:-9999px;top:0;background:var(--bc-primary);color:#fff;padding:10px 16px;z-index:999}
.bc-skip:focus{left:8px;top:8px;border-radius:8px}

/* ---------- progress ---------- */
.bc-progress{position:fixed;inset:0 0 auto 0;height:3px;z-index:120;background:transparent;pointer-events:none}
.bc-progress span{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--bc-primary),var(--bc-accent));transition:width .1s linear}

/* ---------- header ---------- */
.bc-header{background:var(--bc-card);background:color-mix(in srgb,var(--bc-card) 88%,transparent);backdrop-filter:saturate(180%) blur(14px);border-bottom:1px solid var(--bc-line);z-index:100}
body.bc-sticky .bc-header{position:sticky;top:0}
.bc-header-in{display:flex;align-items:center;gap:16px;height:64px}
body.bc-sticky .bc-header{box-shadow:0 1px 0 var(--bc-line)}
.bc-brand{display:flex;align-items:center;gap:10px;color:inherit;flex:none}
.bc-logo{border-radius:10px}
.bc-logo-mark{width:38px;height:38px;border-radius:11px;display:grid;place-items:center;color:#fff;background:linear-gradient(135deg,var(--bc-primary),var(--bc-accent));box-shadow:0 6px 16px color-mix(in srgb,var(--bc-primary) 35%,transparent)}
.bc-brand-text{display:flex;flex-direction:column;line-height:1.15}
.bc-brand-text strong{font-size:15.5px;font-weight:800;letter-spacing:-.01em}
.bc-brand-text small{font-size:11.5px;color:var(--bc-muted);font-weight:600;letter-spacing:.02em}
.bc-nav{display:flex;gap:2px;margin-left:auto;overflow:auto;scrollbar-width:none}
.bc-nav::-webkit-scrollbar{display:none}
.bc-nav a{padding:8px 12px;border-radius:9px;font-size:13.5px;font-weight:650;color:var(--bc-ink-2);white-space:nowrap}
.bc-nav a:hover{background:var(--bc-soft);color:var(--bc-primary)}
.bc-head-actions{display:flex;align-items:center;gap:8px;margin-left:auto}
.bc-nav+.bc-head-actions{margin-left:8px}
.bc-icon-btn{width:36px;height:36px;border-radius:10px;border:1px solid var(--bc-line);background:var(--bc-card);color:var(--bc-ink-2);display:grid;place-items:center;cursor:pointer;transition:.18s}
.bc-icon-btn:hover{border-color:var(--bc-primary);color:var(--bc-primary)}
.bc-burger{display:none}
.bc-drawer{display:none;flex-direction:column;padding:8px 18px 16px;border-top:1px solid var(--bc-line);background:var(--bc-card)}
.bc-drawer a{display:flex;align-items:center;justify-content:space-between;padding:12px 4px;border-bottom:1px solid var(--bc-line);font-weight:650;color:var(--bc-ink)}
.bc-drawer a:last-child{border-bottom:0}

/* ---------- buttons ---------- */
.bc-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 20px;border-radius:11px;border:1px solid transparent;cursor:pointer;
  background:var(--bc-primary);color:#fff;font-weight:700;font-size:14.5px;letter-spacing:-.01em;
  box-shadow:0 1px 2px rgba(15,23,42,.10), 0 6px 16px rgba(29,78,216,.18);
  box-shadow:0 1px 2px rgba(15,23,42,.10), 0 6px 16px color-mix(in srgb,var(--bc-primary) 22%,transparent);
  transition:transform .16s ease, box-shadow .16s ease, background .16s, filter .16s;
}
.bc-btn:hover{transform:translateY(-1px);filter:saturate(1.08) brightness(1.04);
  box-shadow:0 2px 4px rgba(15,23,42,.12), 0 12px 24px color-mix(in srgb,var(--bc-primary) 28%,transparent)}
.bc-btn:focus-visible{outline:2px solid var(--bc-primary);outline-offset:3px}
.bc-btn:active{transform:translateY(0)}
.bc-btn-sm{padding:8px 14px;font-size:13px;border-radius:10px}
.bc-btn-lg{padding:14px 24px;font-size:15.5px}
.bc-btn-block{width:100%}
.bc-btn-ghost{background:transparent;color:var(--bc-ink);border-color:var(--bc-line);box-shadow:none}
.bc-btn-ghost:hover{border-color:var(--bc-primary);color:var(--bc-primary);box-shadow:none}
.bc-btn-soft{background:var(--bc-soft);color:var(--bc-primary);box-shadow:none}
.bc-btn-white{background:#fff;color:var(--bc-primary);box-shadow:0 10px 24px rgba(0,0,0,.16)}
.bc-link{font-weight:700;font-size:14px;display:inline-flex;gap:5px;align-items:center}

/* ---------- section frame ---------- */
.bc-section{padding:72px 0;position:relative}
.bc-section-tight{padding:24px 0 0}
.bc-alt{background:var(--bc-panel);border-top:1px solid var(--bc-line);border-bottom:1px solid var(--bc-line)}

/* section head: eyebrow + rule + heading, aligned to a 1-column measure */
.bc-sec-head{max-width:780px;margin:0 0 34px;position:relative;padding-top:2px}
.bc-sec-eyebrow{display:flex;align-items:center;gap:10px;margin:0 0 14px;
  font-size:11.5px;font-weight:800;letter-spacing:.14em;text-transform:uppercase;color:var(--bc-primary)}
.bc-sec-eyebrow::after{content:"";height:1px;flex:1;max-width:120px;
  background:linear-gradient(90deg,var(--bc-line),transparent)}
.bc-sec-icon{width:30px;height:30px;border-radius:9px;background:var(--bc-soft);color:var(--bc-primary);
  display:grid;place-items:center;flex:none;box-shadow:inset 0 0 0 1px var(--bc-line)}
.bc-sec-head h2{font-size:clamp(23px,3.4vw,33px);margin:0 0 10px;letter-spacing:-.028em;line-height:1.18}
.bc-sec-head p{color:var(--bc-muted);font-size:16px;margin:0;line-height:1.6;max-width:66ch}
.bc-hint{color:var(--bc-muted);font-size:13.5px;margin:10px 0 0}

/* reveal */
.bc-reveal{opacity:0;transform:translateY(14px)}
.bc-reveal.is-in{opacity:1;transform:none;transition:opacity .5s ease,transform .5s cubic-bezier(.2,.7,.3,1)}

/* ---------- hero ---------- */
.bc-hero{padding:64px 0 56px;overflow:hidden;background:var(--bc-card);border-bottom:1px solid var(--bc-line)}
.bc-hero-bg{position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(760px 300px at 12% -10%, color-mix(in srgb,var(--bc-primary) 10%,transparent), transparent 65%),
    radial-gradient(620px 260px at 92% 0%, color-mix(in srgb,var(--bc-accent) 9%,transparent), transparent 62%),
    linear-gradient(var(--bc-line) 1px, transparent 1px) 0 0/100% 34px,
    linear-gradient(90deg, var(--bc-line) 1px, transparent 1px) 0 0/34px 100%;
  -webkit-mask-image:radial-gradient(120% 90% at 50% 0%, #000 30%, transparent 78%);
  mask-image:radial-gradient(120% 90% at 50% 0%, #000 30%, transparent 78%);
  opacity:.85}
.bc-hero-grid{display:grid;grid-template-columns:1.4fr .9fr;gap:44px;align-items:center;position:relative}
.bc-hero h1{font-size:clamp(30px,5.2vw,50px);margin:16px 0 16px;letter-spacing:-.035em;line-height:1.08}
.bc-lead{font-size:17.5px;color:var(--bc-ink-2);max-width:56ch;margin:0 0 26px;line-height:1.62}
.bc-badge{display:inline-flex;align-items:center;gap:8px;background:var(--bc-soft);color:var(--bc-primary);border:1px solid transparent;border:1px solid color-mix(in srgb,var(--bc-primary) 20%,transparent);padding:6px 13px;border-radius:999px;font-size:12.5px;font-weight:750;letter-spacing:.01em}
.bc-badge-live i{width:7px;height:7px;border-radius:50%;background:var(--bc-green);box-shadow:0 0 0 0 color-mix(in srgb,var(--bc-green) 60%,transparent);animation:bcPulse 2s infinite}
@keyframes bcPulse{70%{box-shadow:0 0 0 8px transparent}100%{box-shadow:0 0 0 0 transparent}}
.bc-hero-cta{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:22px}
.bc-hero-facts{list-style:none;margin:0;padding:16px 0 0;display:flex;flex-wrap:wrap;gap:10px 26px;
  border-top:1px solid var(--bc-line)}
.bc-hero-facts li{display:flex;align-items:center;gap:8px;font-size:13.5px;font-weight:650;color:var(--bc-ink-2)}
.bc-hero-facts .bc-i{color:var(--bc-primary)}
.bc-hero-side{display:flex;flex-direction:column;gap:14px}
.bc-countdown,.bc-quick,.bc-hero-card{background:var(--bc-card);border:1px solid var(--bc-line);border-radius:var(--bc-radius);padding:20px;box-shadow:var(--bc-shadow)}
.bc-cd-label{display:flex;align-items:center;gap:7px;margin:0 0 12px;font-size:12.5px;font-weight:750;text-transform:uppercase;letter-spacing:.06em;color:var(--bc-muted)}
.bc-cd-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}
.bc-cd-grid div{background:var(--bc-soft);border-radius:12px;padding:10px 4px;text-align:center}
.bc-cd-grid b{display:block;font-size:23px;font-weight:800;font-variant-numeric:tabular-nums;color:var(--bc-primary);line-height:1.1}
.bc-cd-grid span{font-size:10.5px;text-transform:uppercase;letter-spacing:.06em;color:var(--bc-muted);font-weight:700}
.bc-cd-done{margin:12px 0 0;font-weight:700;color:var(--bc-red);font-size:14px}
.bc-quick h3{font-size:16px;margin:0 0 4px}
.bc-quick p{font-size:13.5px;color:var(--bc-muted);margin:0 0 14px}

/* board hero */
.bc-hero-board .bc-hero-card{padding:22px}
.bc-crumbs{display:flex;gap:8px;align-items:center;font-size:13px;color:var(--bc-muted);margin-bottom:16px;flex-wrap:wrap}
.bc-crumbs em{font-style:normal;color:var(--bc-ink)}
.bc-board-mark{width:56px;height:56px;border-radius:14px;display:grid;place-items:center;color:#fff;font-weight:800;letter-spacing:.04em;margin-bottom:16px}
.bc-kv{list-style:none;margin:0 0 16px;padding:0}
.bc-kv li{display:flex;justify-content:space-between;gap:12px;padding:9px 0;border-bottom:1px dashed var(--bc-line);font-size:14px}
.bc-kv li:last-child{border-bottom:0}
.bc-kv span{color:var(--bc-muted)}
.bc-kv b{font-weight:750}

/* ---------- alert ---------- */
.bc-alert{display:flex;gap:14px;padding:16px 18px;border-radius:var(--bc-radius);border:1px solid var(--bc-line);background:var(--bc-card);box-shadow:var(--bc-shadow)}
.bc-alert strong{display:block;font-size:14.5px;margin-bottom:2px}
.bc-alert p{margin:0;font-size:14.5px;color:var(--bc-ink-2)}
.bc-alert-ic{width:36px;height:36px;flex:none;border-radius:10px;display:grid;place-items:center;background:var(--bc-soft);color:var(--bc-primary)}
.bc-alert-success{border-left:4px solid var(--bc-green)} .bc-alert-success .bc-alert-ic{background:#dcfce7;color:#15803d}
.bc-alert-warning{border-left:4px solid var(--bc-amber)} .bc-alert-warning .bc-alert-ic{background:#fef3c7;color:#b45309}
.bc-alert-danger{border-left:4px solid var(--bc-red)} .bc-alert-danger .bc-alert-ic{background:#ffe4e6;color:#be123c}
.bc-alert-info{border-left:4px solid var(--bc-primary)}

/* ---------- info: single divided spec panel (6 cells stay on one row) ---- */
.bc-info-grid{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));
  background:var(--bc-card);border:1px solid var(--bc-line);border-radius:var(--bc-radius);
  box-shadow:var(--bc-shadow);overflow:hidden}
.bc-info-card{position:relative;padding:20px 16px 18px;border-left:1px solid var(--bc-line);
  min-width:0;transition:background .2s}
.bc-info-card:first-child{border-left:0}
.bc-info-card::after{content:"";position:absolute;inset:0 0 auto 0;height:2px;
  background:linear-gradient(90deg,var(--bc-primary),var(--bc-accent));opacity:0;transition:opacity .2s}
.bc-info-card:hover{background:var(--bc-soft)}
.bc-info-card:hover::after{opacity:1}
.bc-info-ic{width:30px;height:30px;border-radius:9px;display:grid;place-items:center;
  background:var(--bc-soft);color:var(--bc-primary);margin-bottom:12px;box-shadow:inset 0 0 0 1px var(--bc-line)}
.bc-info-card h3{font-size:10.5px;text-transform:uppercase;letter-spacing:.09em;color:var(--bc-muted);
  font-weight:800;margin:0 0 5px;line-height:1.35}
.bc-info-value{font-size:17px;font-weight:800;margin:0 0 3px;letter-spacing:-.025em;line-height:1.25;
  overflow-wrap:anywhere}
.bc-info-card small{font-size:11.5px;color:var(--bc-muted);line-height:1.4;display:block}

/* ---------- timeline ---------- */
.bc-timeline{list-style:none;margin:0;padding:0;position:relative}
.bc-timeline::before{content:"";position:absolute;left:19px;top:14px;bottom:14px;width:2px;background:linear-gradient(180deg,var(--bc-primary),var(--bc-accent));opacity:.25}
.bc-timeline li{display:flex;gap:18px;padding-bottom:22px;position:relative}
.bc-tl-dot{width:40px;height:40px;flex:none;border-radius:50%;display:grid;place-items:center;background:var(--bc-card);border:2px solid var(--bc-primary);color:var(--bc-primary);font-weight:800;font-size:13px;z-index:1}
.bc-tl-body{background:var(--bc-card);border:1px solid var(--bc-line);border-radius:var(--bc-radius);padding:16px 18px;box-shadow:var(--bc-shadow);flex:1}
.bc-tl-top{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.bc-tl-body h3{font-size:16.5px;margin:0}
.bc-tl-body p{margin:6px 0 0;font-size:14.5px;color:var(--bc-ink-2)}
.bc-chip{font-size:11.5px;font-weight:750;padding:4px 10px;border-radius:999px;background:var(--bc-soft);color:var(--bc-primary)}

/* ---------- SMS cards ---------- */
.bc-sms-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-bottom:18px}
.bc-sms-card{background:var(--bc-card);border:1px solid var(--bc-line);border-radius:var(--bc-radius);padding:22px;box-shadow:var(--bc-shadow);position:relative;overflow:hidden}
.bc-sms-card::after{content:"";position:absolute;inset:0 0 auto 0;height:4px;background:linear-gradient(90deg,var(--bc-primary),var(--bc-accent))}
.bc-sms-head{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.bc-sms-head h3{margin:0;font-size:17px}
.bc-step-n{width:34px;height:34px;border-radius:11px;display:grid;place-items:center;background:var(--bc-primary);color:#fff;font-weight:800;flex:none}
.bc-step-2{background:var(--bc-green)}
.bc-sms-format,.bc-sms-example{display:flex;align-items:center;gap:10px;flex-wrap:wrap;background:var(--bc-soft);border-radius:12px;padding:12px 14px;margin-bottom:10px}
.bc-sms-format code,.bc-sms-example code{font-family:var(--bc-mono);font-size:13.5px;color:var(--bc-ink);word-break:break-word;flex:1;min-width:0}
.bc-tag{font-size:10.5px;font-weight:800;letter-spacing:.07em;text-transform:uppercase;color:var(--bc-primary);background:var(--bc-card);border-radius:6px;padding:3px 8px}
.bc-tag-green{color:var(--bc-green)}
.bc-copy{width:30px;height:30px;border-radius:8px;border:1px solid var(--bc-line);background:var(--bc-card);cursor:pointer;display:grid;place-items:center;color:var(--bc-muted);flex:none;transition:.16s}
.bc-copy:hover{color:var(--bc-primary);border-color:var(--bc-primary)}
.bc-copy.is-done{color:var(--bc-green);border-color:var(--bc-green)}
.bc-sms-note{font-size:14px;color:var(--bc-ink-2);margin:12px 0}
.bc-send-to{display:inline-flex;align-items:center;gap:8px;font-size:13.5px;font-weight:700;color:var(--bc-ink-2);background:var(--bc-soft);padding:8px 14px;border-radius:999px}
.bc-note{display:flex;gap:12px;align-items:flex-start;background:var(--bc-card);border:1px dashed color-mix(in srgb,var(--bc-primary) 40%,var(--bc-line));border-radius:var(--bc-radius);padding:16px 18px;margin-top:6px}
.bc-note .bc-i{color:var(--bc-primary);margin-top:2px}
.bc-note p{margin:0;font-size:14.5px;color:var(--bc-ink-2)}
.bc-note-warn{border-color:color-mix(in srgb,var(--bc-amber) 50%,var(--bc-line))}
.bc-note-warn .bc-i{color:var(--bc-amber)}

/* ---------- simulator ---------- */
.bc-sim{margin-top:26px;background:var(--bc-card);border:1px solid var(--bc-line);border-radius:calc(var(--bc-radius) + 4px);box-shadow:var(--bc-shadow);overflow:hidden}
.bc-sim-head{padding:20px 22px;border-bottom:1px solid var(--bc-line);background:var(--bc-soft)}
.bc-sim-head h3{display:flex;align-items:center;gap:9px;margin:0 0 4px;font-size:17px}
.bc-sim-head p{margin:0;font-size:13.5px;color:var(--bc-muted)}
.bc-sim-body{display:grid;grid-template-columns:1fr 320px;gap:26px;padding:22px}
.bc-sim-tabs{display:flex;gap:6px;background:var(--bc-soft);padding:5px;border-radius:12px;margin-bottom:18px}
.bc-sim-tabs button{flex:1;border:0;background:transparent;padding:9px;border-radius:9px;font-weight:700;font-size:13.5px;color:var(--bc-muted);cursor:pointer;transition:.16s}
.bc-sim-tabs button.is-active{background:var(--bc-card);color:var(--bc-primary);box-shadow:var(--bc-shadow)}
.bc-field{display:block;margin-bottom:14px}
.bc-field>span{display:block;font-size:12.5px;font-weight:750;color:var(--bc-muted);margin-bottom:6px;text-transform:uppercase;letter-spacing:.04em}
.bc-field input,.bc-field select{width:100%;padding:12px 14px;border:1.5px solid var(--bc-line);border-radius:12px;background:var(--bc-card);color:var(--bc-ink);font-size:15px;font-family:inherit;outline:0;transition:.16s}
.bc-field input:focus,.bc-field select:focus{border-color:var(--bc-primary);box-shadow:0 0 0 4px color-mix(in srgb,var(--bc-primary) 14%,transparent)}
.bc-chips{display:flex;flex-wrap:wrap;gap:7px;max-height:186px;overflow:auto;padding:4px 2px}
.bc-chip-btn{border:1.5px solid var(--bc-line);background:var(--bc-card);color:var(--bc-ink-2);border-radius:999px;padding:7px 13px;font-size:12.5px;font-weight:650;cursor:pointer;transition:.14s}
.bc-chip-btn:hover{border-color:var(--bc-primary)}
.bc-chip-btn.is-on{background:var(--bc-primary);border-color:var(--bc-primary);color:#fff}
.bc-chip-btn b{font-family:var(--bc-mono);opacity:.8;margin-right:5px}

.bc-phone{background:linear-gradient(180deg,#1e293b,#0f172a);border-radius:30px;padding:12px;box-shadow:var(--bc-shadow-lg);align-self:start}
.bc-phone-top{display:flex;justify-content:center;padding:4px 0 8px}
.bc-phone-top span{width:56px;height:5px;border-radius:99px;background:rgba(255,255,255,.25)}
.bc-phone-screen{background:#f8fafc;border-radius:22px;overflow:hidden;display:flex;flex-direction:column;min-height:300px}
.bc-phone-bar{padding:10px 14px;background:#fff;border-bottom:1px solid #e2e8f0;display:flex;flex-direction:column;line-height:1.2}
.bc-phone-bar b{font-size:14px;color:#0f172a}
.bc-phone-bar small{font-size:11px;color:#64748b}
.bc-bubbles{padding:14px;display:flex;flex-direction:column;gap:10px;flex:1}
.bc-bubble{max-width:88%;padding:10px 13px;border-radius:16px;font-size:13px;line-height:1.5;word-break:break-word}
.bc-out{align-self:flex-end;background:var(--bc-primary);color:#fff;border-bottom-right-radius:5px;font-family:var(--bc-mono)}
.bc-in{align-self:flex-start;background:#e2e8f0;color:#0f172a;border-bottom-left-radius:5px}
.bc-phone-input{display:flex;align-items:center;gap:8px;padding:10px 12px;background:#fff;border-top:1px solid #e2e8f0}
.bc-phone-input span{flex:1;font-family:var(--bc-mono);font-size:12.5px;color:#0f172a;word-break:break-all}
.bc-phone-meta{display:flex;justify-content:space-between;padding:10px 6px 4px;color:rgba(255,255,255,.75);font-size:12px;font-weight:650}

/* ---------- fee ---------- */
.bc-fee-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:20px}
.bc-fee-calc{background:var(--bc-card);border:1px solid var(--bc-line);border-radius:var(--bc-radius);padding:22px;box-shadow:var(--bc-shadow)}
.bc-fee-row{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:16px}
.bc-fee-row span{font-weight:700;font-size:14.5px}
.bc-stepper{display:flex;align-items:center;border:1.5px solid var(--bc-line);border-radius:12px;overflow:hidden}
.bc-stepper button{width:40px;height:42px;border:0;background:var(--bc-soft);color:var(--bc-primary);font-size:19px;font-weight:700;cursor:pointer}
.bc-stepper input{width:64px;height:42px;border:0;text-align:center;font-size:16px;font-weight:800;background:var(--bc-card);color:var(--bc-ink);-moz-appearance:textfield}
.bc-stepper input::-webkit-outer-spin-button,.bc-stepper input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}
.bc-range{width:100%;accent-color:var(--bc-primary);margin:6px 0 18px}
.bc-fee-total{display:flex;align-items:center;justify-content:space-between;padding:18px;border-radius:14px;background:linear-gradient(135deg,var(--bc-primary),var(--bc-accent));color:#fff}
.bc-fee-total span{font-size:13.5px;opacity:.9;font-weight:650}
.bc-fee-total strong{font-size:26px;font-weight:800;letter-spacing:-.02em}

/* ---------- tables ---------- */
.bc-table-wrap,.bc-fee-table-wrap{overflow:auto;background:var(--bc-card);border:1px solid var(--bc-line);border-radius:var(--bc-radius);box-shadow:var(--bc-shadow)}
.bc-table{width:100%;border-collapse:collapse;font-size:14.5px}
.bc-table th{text-align:left;padding:12px 16px;background:var(--bc-soft);font-size:10.5px;text-transform:uppercase;letter-spacing:.1em;color:var(--bc-muted);font-weight:800;white-space:nowrap;border-bottom:1px solid var(--bc-line)}
.bc-table td{padding:12px 16px;border-top:1px solid var(--bc-line)}
.bc-table-hover tbody tr:hover{background:color-mix(in srgb,var(--bc-soft) 60%,transparent)}
.bc-right{text-align:right}
.bc-code{font-family:var(--bc-mono);font-weight:800;color:var(--bc-primary);background:var(--bc-soft);padding:3px 9px;border-radius:7px;font-size:13px}
.bc-search-row{display:flex;align-items:center;gap:10px;background:var(--bc-card);border:1.5px solid var(--bc-line);border-radius:12px;padding:4px 14px;margin-bottom:14px;max-width:420px}
.bc-search-row span{color:var(--bc-muted);display:flex}
.bc-search-row input{flex:1;border:0;background:transparent;padding:11px 0;font-size:15px;color:var(--bc-ink);outline:0;font-family:inherit}

/* ---------- boards grid ---------- */
.bc-board-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:14px}
.bc-board-card{position:relative;display:flex;flex-direction:column;gap:3px;padding:18px;border-radius:var(--bc-radius);background:var(--bc-card);border:1px solid var(--bc-line);box-shadow:var(--bc-shadow);color:inherit;overflow:hidden;transition:.2s}
.bc-board-card::before{content:"";position:absolute;inset:0 auto 0 0;width:4px;background:var(--bc-board,var(--bc-primary))}
.bc-board-card:hover{transform:translateY(-3px);box-shadow:var(--bc-shadow-lg)}
.bc-board-code{font-size:11px;font-weight:800;letter-spacing:.1em;color:var(--bc-board,var(--bc-primary))}
.bc-board-name{font-size:17px;font-weight:750}
.bc-board-sms{font-family:var(--bc-mono);font-size:12px;color:var(--bc-muted)}
.bc-board-go{position:absolute;right:16px;bottom:16px;color:var(--bc-board,var(--bc-primary));opacity:.6;transition:.2s}
.bc-board-card:hover .bc-board-go{opacity:1;transform:translateX(3px)}

/* ---------- result cards ---------- */
.bc-two-cards{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.bc-result-card{background:var(--bc-card);border:1px solid var(--bc-line);border-radius:var(--bc-radius);padding:22px;box-shadow:var(--bc-shadow);display:flex;flex-direction:column}
.bc-rc-head{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.bc-rc-head h3{margin:0;font-size:17px}
.bc-rc-head span{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;flex:none}
.bc-rc-blue span,.bc-rc-blue>span{background:var(--bc-soft);color:var(--bc-primary)}
.bc-rc-green>span{background:#dcfce7;color:#15803d}
.bc-steps{margin:0 0 18px;padding-left:0;list-style:none;counter-reset:s;flex:1}
.bc-steps li{counter-increment:s;position:relative;padding:9px 0 9px 34px;font-size:14.5px;color:var(--bc-ink-2);border-bottom:1px dashed var(--bc-line)}
.bc-steps li:last-child{border-bottom:0}
.bc-steps li::before{content:counter(s);position:absolute;left:0;top:9px;width:23px;height:23px;border-radius:50%;background:var(--bc-soft);color:var(--bc-primary);font-size:12px;font-weight:800;display:grid;place-items:center}

/* ---------- checker ---------- */
.bc-checker{background:var(--bc-card);border:1px solid var(--bc-line);border-radius:calc(var(--bc-radius) + 4px);box-shadow:var(--bc-shadow);overflow:hidden}
.bc-checker-form{padding:22px;background:var(--bc-soft);background:linear-gradient(135deg,color-mix(in srgb,var(--bc-primary) 7%,transparent),color-mix(in srgb,var(--bc-accent) 7%,transparent))}
.bc-checker-fields{display:grid;grid-template-columns:1fr 1fr 1.2fr auto;gap:12px;align-items:end}
.bc-checker-fields .bc-field{margin-bottom:0}
.bc-checker-hint{margin-top:12px}
.bc-checker-out:empty{display:none}
.bc-checker-out{padding:0 22px 22px}

.bc-res{border:1px solid var(--bc-line);border-radius:var(--bc-radius);overflow:hidden;background:var(--bc-card);animation:bcIn .35s ease}
@keyframes bcIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
.bc-res-top{padding:20px;display:flex;gap:16px;align-items:center;color:#fff;background:linear-gradient(135deg,var(--bc-green),#059669)}
.bc-res-top.is-miss{background:linear-gradient(135deg,#64748b,#475569)}
.bc-res-top .bc-res-ic{width:48px;height:48px;border-radius:14px;background:rgba(255,255,255,.2);display:grid;place-items:center;flex:none}
.bc-res-top h3{margin:0;font-size:19px}
.bc-res-top p{margin:2px 0 0;font-size:13.5px;opacity:.92}
.bc-res-meta{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:1px;background:var(--bc-line)}
.bc-res-meta div{background:var(--bc-card);padding:13px 16px}
.bc-res-meta span{display:block;font-size:11px;text-transform:uppercase;letter-spacing:.06em;color:var(--bc-muted);font-weight:750}
.bc-res-meta b{font-size:15.5px;font-weight:800}
.bc-gpa-strip{display:flex;align-items:center;justify-content:center;gap:18px;padding:18px;background:var(--bc-soft);flex-wrap:wrap}
.bc-gpa-box{text-align:center;min-width:96px}
.bc-gpa-box span{display:block;font-size:11px;text-transform:uppercase;letter-spacing:.06em;color:var(--bc-muted);font-weight:750;margin-bottom:2px}
.bc-gpa-box b{font-size:28px;font-weight:800;letter-spacing:-.02em}
.bc-gpa-old b{color:var(--bc-muted)}
.bc-gpa-new b{color:var(--bc-green)}
.bc-gpa-arrow{color:var(--bc-primary)}
.bc-gpa-delta{font-size:12.5px;font-weight:800;padding:4px 11px;border-radius:999px;background:#dcfce7;color:#15803d}
.bc-gpa-delta.is-down{background:#ffe4e6;color:#be123c}
.bc-gpa-delta.is-same{background:var(--bc-card);color:var(--bc-muted)}
.bc-res-rows{padding:6px 0}
.bc-res-row{display:grid;grid-template-columns:1fr auto;gap:12px;align-items:center;padding:14px 20px;border-bottom:1px solid var(--bc-line)}
.bc-res-row:last-child{border-bottom:0}
.bc-res-sub{font-weight:750;font-size:15px}
.bc-res-sub small{display:block;font-weight:600;font-size:12px;color:var(--bc-muted)}
.bc-grades{display:flex;align-items:center;gap:10px}
.bc-grade{min-width:52px;text-align:center;padding:7px 10px;border-radius:10px;font-weight:800;font-size:15px;font-family:var(--bc-mono)}
.bc-grade-old{background:var(--bc-soft);color:var(--bc-muted);text-decoration:line-through;text-decoration-thickness:2px}
.bc-grade-new{background:#dcfce7;color:#15803d}
.bc-grade-new.is-down{background:#ffe4e6;color:#be123c}
.bc-grade-new.is-same{background:var(--bc-soft);color:var(--bc-ink)}
.bc-res-foot{padding:14px 20px;border-top:1px solid var(--bc-line);display:flex;gap:10px;flex-wrap:wrap;align-items:center;justify-content:space-between;background:var(--bc-soft)}
.bc-res-foot small{color:var(--bc-muted);font-size:12.5px}
.bc-res-actions{display:flex;gap:8px}
.bc-spinner{width:18px;height:18px;border:2.5px solid rgba(255,255,255,.4);border-top-color:#fff;border-radius:50%;animation:bcSpin .7s linear infinite}
@keyframes bcSpin{to{transform:rotate(360deg)}}
.bc-loading{display:flex;align-items:center;gap:10px;justify-content:center;padding:26px;color:var(--bc-muted);font-weight:650}
.bc-loading .bc-spinner{border-color:color-mix(in srgb,var(--bc-primary) 25%,transparent);border-top-color:var(--bc-primary)}

/* ---------- downloads ---------- */
.bc-dl-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:14px}
.bc-dl-card{display:flex;align-items:center;gap:14px;padding:16px;background:var(--bc-card);border:1px solid var(--bc-line);border-radius:var(--bc-radius);box-shadow:var(--bc-shadow);transition:.2s}
.bc-dl-card:hover{transform:translateY(-2px);box-shadow:var(--bc-shadow-lg)}
.bc-dl-card.is-empty{opacity:.7}
.bc-dl-ic{width:42px;height:42px;border-radius:12px;background:#fee2e2;color:#dc2626;display:grid;place-items:center;flex:none}
.bc-dl-body{flex:1;min-width:0}
.bc-dl-body h3{margin:0;font-size:15px}
.bc-dl-body p{margin:1px 0 0;font-size:12.5px;color:var(--bc-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.bc-dl-meta{display:flex;gap:10px;font-size:11.5px;color:var(--bc-muted);margin-top:4px}
.bc-pill{font-size:11.5px;font-weight:750;padding:6px 12px;border-radius:999px;background:var(--bc-soft);color:var(--bc-muted)}

/* ---------- charts ---------- */
.bc-chart-grid{display:grid;grid-template-columns:1fr 1.25fr;gap:18px}
.bc-chart-card{margin:0;background:var(--bc-card);border:1px solid var(--bc-line);border-radius:var(--bc-radius);padding:22px;box-shadow:var(--bc-shadow)}
.bc-chart-card figcaption{font-size:12.5px;color:var(--bc-muted);margin-top:14px;text-align:center}
.bc-donut{width:100%;max-width:230px;margin:0 auto;display:block}
.bc-donut-seg{transition:stroke-dasharray .9s cubic-bezier(.3,.8,.3,1)}
.bc-donut-big{font-size:34px;font-weight:800;fill:var(--bc-ink)}
.bc-donut-small{font-size:11px;fill:var(--bc-muted);letter-spacing:.05em;text-transform:uppercase}
.bc-legend{list-style:none;margin:16px 0 0;padding:0;display:flex;flex-direction:column;gap:8px}
.bc-legend li{display:flex;align-items:center;gap:9px;font-size:13.5px}
.bc-legend i{width:11px;height:11px;border-radius:4px;flex:none}
.bc-legend span{flex:1;color:var(--bc-ink-2)}
.bc-legend b{font-variant-numeric:tabular-nums}
.bc-bars{display:flex;flex-direction:column;gap:11px}
.bc-bar-row{display:grid;grid-template-columns:110px 1fr 60px;align-items:center;gap:12px}
.bc-bar-lbl{font-size:13.5px;font-weight:650;color:var(--bc-ink-2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.bc-bar-track{height:11px;border-radius:99px;background:var(--bc-soft);overflow:hidden}
.bc-bar-fill{display:block;height:100%;width:0;border-radius:99px;background:linear-gradient(90deg,var(--bc-primary),var(--bc-accent));transition:width 1s cubic-bezier(.2,.8,.3,1)}
.bc-bar-row.is-in .bc-bar-fill{width:var(--w)}
.bc-bar-val{font-size:13px;font-weight:800;text-align:right;font-variant-numeric:tabular-nums}

/* ---------- FAQ ---------- */
.bc-faq{display:flex;flex-direction:column;gap:10px}
.bc-faq-item{background:var(--bc-card);border:1px solid var(--bc-line);border-radius:var(--bc-radius);box-shadow:var(--bc-shadow);overflow:hidden}
.bc-faq-item summary{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:17px 20px;cursor:pointer;font-weight:700;font-size:15.5px;list-style:none}
.bc-faq-item summary::-webkit-details-marker{display:none}
.bc-faq-item summary i{width:22px;height:22px;flex:none;border-radius:50%;background:var(--bc-soft);position:relative;transition:.2s}
.bc-faq-item summary i::before,.bc-faq-item summary i::after{content:"";position:absolute;background:var(--bc-primary);border-radius:2px;left:50%;top:50%;transform:translate(-50%,-50%)}
.bc-faq-item summary i::before{width:10px;height:2px}
.bc-faq-item summary i::after{width:2px;height:10px;transition:.2s}
.bc-faq-item[open] summary i::after{height:2px}
.bc-faq-item[open] summary{color:var(--bc-primary)}
.bc-faq-a{padding:0 20px 18px;font-size:14.5px;color:var(--bc-ink-2)}
.bc-faq-a p{margin:0}

/* ---------- CTA ---------- */
.bc-cta-sec{padding-bottom:70px}
.bc-cta{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;padding:34px;border-radius:calc(var(--bc-radius) + 6px);background:linear-gradient(135deg,var(--bc-primary),var(--bc-accent));color:#fff;box-shadow:var(--bc-shadow-lg)}
.bc-cta h2{margin:0 0 6px;font-size:clamp(20px,3vw,27px);color:#fff}
.bc-cta p{margin:0;opacity:.92;font-size:15px}

/* ---------- ads ---------- */
.bc-ad{margin:8px auto 0;text-align:center;min-height:0;overflow:hidden}

/* ---------- footer ---------- */
.bc-footer{background:var(--bc-card);border-top:1px solid var(--bc-line);padding:44px 0 90px;margin-top:10px}
.bc-footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:28px}
.bc-brand-foot{margin-bottom:12px}
.bc-foot-desc{font-size:13.5px;color:var(--bc-muted);max-width:46ch}
.bc-footer h4{font-size:12.5px;text-transform:uppercase;letter-spacing:.06em;color:var(--bc-muted);margin:0 0 12px}
.bc-foot-links{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}
.bc-foot-links a{font-size:14px;color:var(--bc-ink-2)}
.bc-foot-links a:hover{color:var(--bc-primary)}
.bc-footer-bottom{margin-top:30px;padding-top:20px;border-top:1px solid var(--bc-line)}
.bc-footer-bottom p{margin:0;font-size:13px;color:var(--bc-muted)}

/* ---------- mobile tabbar + fab ---------- */
.bc-tabbar{display:none;position:fixed;left:0;right:0;bottom:0;z-index:110;background:var(--bc-card);background:color-mix(in srgb,var(--bc-card) 94%,transparent);backdrop-filter:blur(14px);border-top:1px solid var(--bc-line);padding:6px 4px calc(6px + env(safe-area-inset-bottom))}
.bc-tabbar a{flex:1;display:flex;flex-direction:column;align-items:center;gap:3px;padding:6px 2px;color:var(--bc-muted);font-size:10.5px;font-weight:700}
.bc-tabbar a.is-on{color:var(--bc-primary)}
.bc-totop{position:fixed;right:16px;bottom:76px;width:42px;height:42px;border-radius:50%;border:1px solid var(--bc-line);background:var(--bc-card);color:var(--bc-primary);display:grid;place-items:center;box-shadow:var(--bc-shadow-lg);cursor:pointer;opacity:0;visibility:hidden;transform:translateY(8px);transition:.25s;z-index:105}
.bc-totop.is-on{opacity:1;visibility:visible;transform:none}

/* ---------- board reference table ---------- */
.bc-boards-table .bc-table td{vertical-align:middle}
.bc-board-dot{display:inline-block;width:8px;height:8px;border-radius:50%;margin-right:9px;vertical-align:1px}
.bc-boards-table tr.is-current{background:var(--bc-soft)}
.bc-inline-code{font-family:var(--bc-mono);font-size:12.5px;background:var(--bc-soft);
  padding:3px 7px;border-radius:6px;color:var(--bc-ink-2);white-space:nowrap}
.bc-tlink{display:inline-flex;align-items:center;gap:5px;font-size:13.5px;font-weight:700}
.bc-muted-sm{color:var(--bc-muted);font-size:13px}

/* ---------- result card footer + board website picker ---------- */
.bc-rc-foot{margin-top:auto;padding-top:4px}
.bc-site-pick{margin-top:14px;padding-top:14px;border-top:1px dashed var(--bc-line)}
.bc-site-pick > span{display:block;font-size:12.5px;color:var(--bc-muted);margin-bottom:8px}
.bc-site-row{display:flex;gap:8px}
.bc-site-row select{flex:1;min-width:0;padding:9px 11px;border:1.5px solid var(--bc-line);
  border-radius:10px;background:var(--bc-card);color:var(--bc-ink);font-family:inherit;font-size:14px;outline:0}
.bc-site-row select:focus{border-color:var(--bc-primary)}
.bc-rc-note{display:flex;gap:8px;align-items:flex-start;margin:0;padding-top:14px;
  border-top:1px dashed var(--bc-line);font-size:13.5px;color:var(--bc-muted)}
.bc-rc-note svg{flex:none;margin-top:3px}

/* ---------- simulator: caption + send ---------- */
.bc-bubble-caption{display:flex;gap:8px;align-items:flex-start;margin:12px 2px 0;
  font-size:12px;line-height:1.5;color:var(--bc-muted)}
.bc-bubble-caption svg{flex:none;margin-top:3px;opacity:.8}
.bc-phone-actions{margin-top:14px}
.bc-btn.is-disabled{opacity:.45;cursor:not-allowed;box-shadow:none}
.bc-sim-warn{display:flex;gap:6px;align-items:center;justify-content:center;margin-top:8px;font-size:12.5px}

.bc-avail{display:block;font-weight:700;color:var(--bc-ink-2);margin-bottom:3px}

/* ---------- nav overflow ---------- */
.bc-nav-more{display:inline-flex;align-items:center;gap:5px;background:transparent;border:0;cursor:pointer;
  font:inherit;font-size:14.5px;font-weight:650;color:var(--bc-muted);padding:8px 10px;border-radius:9px}
.bc-nav-more:hover{color:var(--bc-primary);background:var(--bc-soft)}

/* ---------- responsive ---------- */
@media (max-width:1080px){
  .bc-info-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
  .bc-info-card:nth-child(3n+1){border-left:0}
  .bc-info-card:nth-child(n+4){border-top:1px solid var(--bc-line)}
}
@media (max-width:1000px){
  .bc-hero-grid{grid-template-columns:1fr}
  .bc-sim-body{grid-template-columns:1fr}
  .bc-phone{max-width:330px;margin:0 auto}
  .bc-chart-grid,.bc-fee-grid{grid-template-columns:1fr}
  .bc-footer-grid{grid-template-columns:1fr 1fr}
  .bc-checker-fields{grid-template-columns:1fr 1fr}
  .bc-checker-fields button{grid-column:1/-1}
}
@media (max-width:820px){
  .bc-nav{display:none}
  .bc-burger{display:grid}
  .bc-header-in{height:60px}
  .bc-sms-grid,.bc-two-cards{grid-template-columns:1fr}
  .bc-tabbar{display:flex}
  .bc-section{padding:42px 0}
  .bc-hero{padding:36px 0 34px}
  html{scroll-padding-top:74px}
}
@media (max-width:620px){
  .bc-info-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .bc-info-card:nth-child(n){border-left:1px solid var(--bc-line);border-top:1px solid var(--bc-line)}
  .bc-info-card:nth-child(odd){border-left:0}
  .bc-info-card:nth-child(-n+2){border-top:0}
  .bc-site-row{flex-direction:column}
}
@media (max-width:560px){
  .bc-wrap{padding:0 14px}
  .bc-footer-grid{grid-template-columns:1fr}
  .bc-checker-fields{grid-template-columns:1fr}
  .bc-hide-sm{display:none}
  .bc-res-row{grid-template-columns:1fr}
  .bc-grades{justify-content:flex-start}
  .bc-cta{padding:24px}
  .bc-bar-row{grid-template-columns:88px 1fr 48px}
  .bc-head-actions .bc-btn{display:none}
}
@media print{
  .bc-header,.bc-tabbar,.bc-totop,.bc-footer,.bc-ad,.bc-checker-form{display:none!important}
  .bc-section{padding:0}
  .bc-res{box-shadow:none;border:1px solid #ccc}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
}