@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@500;600;700&family=Source+Serif+4:opsz,wght@8..60,560;8..60,650;8..60,700&display=swap');

:root {
  --ks-red: #e30613;
  --ks-red-2: #be123c;
  --ks-ink: #0b1220;
  --ks-muted: #64748b;
  --ks-line: rgba(15, 23, 42, 0.08);
}

/* ===== Landing ===== */
.ks-page {
  background:
    radial-gradient(900px 320px at 12% -10%, rgba(227, 6, 19, 0.10), transparent 55%),
    radial-gradient(700px 280px at 100% 0%, rgba(15, 23, 42, 0.06), transparent 50%),
    #f4f6fb;
  padding-bottom: 72px;
}
.ks-hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 88% 12%, rgba(227, 6, 19, 0.28), transparent 42%),
    linear-gradient(145deg, #070b14 0%, #121a2b 55%, #1a1020 100%);
  color: #fff;
  padding: 56px 20px 88px;
  border-radius: 0 0 36px 36px;
}
.ks-hero-inner { width: min(1120px, 100%); margin: 0 auto; }
.ks-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 7px 14px; border-radius: 999px;
  background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.12);
  font-size: 0.75rem; font-weight: 700; letter-spacing: 0.04em; text-transform: uppercase;
  color: rgba(255,255,255,0.82); margin-bottom: 16px;
}
.ks-badge i { color: #fb7185; }
.ks-hero h1 {
  margin: 0 0 10px; font-weight: 900; letter-spacing: -0.04em;
  font-size: clamp(2rem, 4.4vw, 3.15rem); line-height: 1.08;
}
.ks-hero h1 span { color: #fb7185; }
.ks-hero p {
  max-width: 640px; margin: 0 0 28px; color: rgba(255,255,255,0.68);
  font-size: 1.05rem; line-height: 1.65;
}
.ks-hero-stats {
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px; max-width: 720px;
}
.ks-stat {
  background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.08);
  border-radius: 16px; padding: 14px 16px;
}
.ks-stat b { display: block; font-size: 1.05rem; font-weight: 800; }
.ks-stat span { font-size: 0.75rem; color: rgba(255,255,255,0.5); font-weight: 600; }

.ks-board {
  width: min(1120px, calc(100% - 32px));
  margin: -48px auto 0;
  display: grid; grid-template-columns: 1.35fr 0.85fr; gap: 18px;
  position: relative; z-index: 2;
}
.ks-card {
  background: #fff; border-radius: 24px;
  border: 1px solid rgba(15,23,42,0.06);
  box-shadow: 0 18px 50px rgba(15, 23, 42, 0.08);
  overflow: hidden;
}
.ks-card-h {
  display: flex; align-items: center; gap: 12px;
  padding: 20px 24px; border-bottom: 1px solid var(--ks-line);
  background: linear-gradient(180deg, #fff, #fafbff);
}
.ks-ico {
  width: 42px; height: 42px; border-radius: 12px; display: grid; place-items: center;
  background: linear-gradient(135deg, var(--ks-red), var(--ks-red-2)); color: #fff; font-size: 1rem;
}
.ks-card-h h2 { margin: 0; font-size: 1.05rem; font-weight: 800; color: var(--ks-ink); }
.ks-card-h p { margin: 2px 0 0; font-size: 0.8rem; color: var(--ks-muted); }
.ks-card-b { padding: 22px 24px 26px; }

.ks-grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.ks-field { margin-bottom: 14px; }
.ks-field label {
  display: block; font-size: 0.72rem; font-weight: 800; letter-spacing: 0.06em;
  text-transform: uppercase; color: #94a3b8; margin-bottom: 7px;
}
.ks-field select, .ks-field input {
  width: 100%; border: 1.5px solid #e8edf5; background: #f8fafc; color: #0f172a;
  border-radius: 14px; padding: 12px 14px; font-weight: 700; font-size: 0.92rem;
  outline: none; transition: border-color .2s, box-shadow .2s, background .2s;
}
.ks-field select:focus, .ks-field input:focus {
  border-color: var(--ks-red); background: #fff;
  box-shadow: 0 0 0 4px rgba(227, 6, 19, 0.12);
}

.ks-pills { display: flex; flex-wrap: wrap; gap: 8px; }
.ks-pill {
  appearance: none; border: 1.5px solid #e8edf5; background: #f8fafc; color: #334155;
  border-radius: 999px; padding: 9px 14px; font-weight: 800; font-size: 0.82rem; cursor: pointer;
  transition: .18s ease;
}
.ks-pill:hover { border-color: #cbd5e1; }
.ks-pill.is-on {
  background: linear-gradient(135deg, var(--ks-red), var(--ks-red-2));
  border-color: transparent; color: #fff;
  box-shadow: 0 8px 18px rgba(227, 6, 19, 0.22);
}

.ks-layouts { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.ks-layout {
  appearance: none; text-align: left; cursor: pointer;
  border: 1.5px solid #e8edf5; background: #f8fafc; border-radius: 16px; padding: 14px;
  transition: .18s ease;
}
.ks-layout b { display: block; font-size: 1rem; color: var(--ks-ink); }
.ks-layout span { font-size: 0.75rem; color: var(--ks-muted); font-weight: 600; }
.ks-layout.is-on {
  background: #fff5f5; border-color: var(--ks-red);
  box-shadow: 0 0 0 4px rgba(227, 6, 19, 0.08);
}

.ks-go {
  width: 100%; margin-top: 8px; border: 0; cursor: pointer;
  display: flex; align-items: center; justify-content: center; gap: 10px;
  padding: 16px; border-radius: 16px; font-weight: 900; font-size: 1.05rem; color: #fff;
  background: linear-gradient(135deg, var(--ks-red), var(--ks-red-2));
  box-shadow: 0 12px 28px rgba(227, 6, 19, 0.28);
  transition: transform .18s ease, box-shadow .18s ease;
}
.ks-go:hover { transform: translateY(-2px); box-shadow: 0 16px 36px rgba(227, 6, 19, 0.36); color: #fff; }

.ks-id .ks-preview {
  margin-top: 8px; padding: 14px; border-radius: 16px; background: #0b1220; color: #e2e8f0;
  font-size: 0.82rem; line-height: 1.7;
}
.ks-id .ks-preview b { color: #fff; }
.ks-note {
  margin-top: 14px; font-size: 0.78rem; color: var(--ks-muted); line-height: 1.5;
}

.ks-rules {
  width: min(1120px, calc(100% - 32px)); margin: 22px auto 0;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px;
}
.ks-rule {
  background: #fff; border: 1px solid rgba(15,23,42,0.06); border-radius: 18px; padding: 18px;
}
.ks-rule i { color: var(--ks-red); margin-bottom: 8px; }
.ks-rule h3 { margin: 0 0 6px; font-size: 0.95rem; font-weight: 800; }
.ks-rule p { margin: 0; font-size: 0.82rem; color: var(--ks-muted); line-height: 1.55; }

.ks-warn {
  width: min(1120px, calc(100% - 32px)); margin: -32px auto 16px; position: relative; z-index: 2;
  display: flex; gap: 10px; align-items: center;
  background: #fff7ed; border: 1px solid #fed7aa; color: #9a3412;
  border-radius: 16px; padding: 14px 16px; font-weight: 700;
}

@media (max-width: 900px) {
  .ks-board, .ks-rules, .ks-hero-stats { grid-template-columns: 1fr; }
  .ks-grid-2, .ks-layouts { grid-template-columns: 1fr; }
  .ks-hero { padding: 36px 16px 72px; }
}

/* ===== Exam cockpit ===== */
body.kx-immersive .topbar,
body.kx-immersive .navbar,
body.kx-immersive footer,
body.kx-immersive #backToTop { display: none !important; }
body.kx-immersive .site-main { padding: 0; margin: 0; min-height: 100vh; background: #070b14; }
body.kx-immersive { background: #070b14; }

.kx-shell {
  min-height: 100vh; color: #e2e8f0;
  background:
    radial-gradient(900px 420px at 80% -10%, rgba(227, 6, 19, 0.16), transparent 50%),
    linear-gradient(180deg, #0a0f1a, #070b14);
  padding: 16px 16px 28px;
}
.kx-top {
  width: min(1180px, 100%); margin: 0 auto 14px;
  display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap;
}
.kx-brand { display: flex; align-items: center; gap: 10px; }
.kx-brand i {
  width: 38px; height: 38px; border-radius: 12px; display: grid; place-items: center;
  background: linear-gradient(135deg, var(--ks-red), var(--ks-red-2)); color: #fff;
}
.kx-brand strong { display: block; font-size: 0.95rem; color: #fff; }
.kx-brand span { font-size: 0.72rem; color: #94a3b8; font-weight: 600; }
.kx-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.kx-chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 11px; border-radius: 999px; font-size: 0.75rem; font-weight: 800;
  background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.08); color: #cbd5e1;
}
.kx-actions-top { display: flex; gap: 8px; }
.kx-ghost, .kx-iconbtn {
  appearance: none; border: 1px solid rgba(255,255,255,0.12); background: rgba(255,255,255,0.05);
  color: #e2e8f0; border-radius: 12px; padding: 8px 12px; font-weight: 700; font-size: 0.8rem;
  text-decoration: none; cursor: pointer;
}
.kx-ghost:hover, .kx-iconbtn:hover { background: rgba(255,255,255,0.1); color: #fff; }

.kx-hud {
  width: min(1180px, 100%); margin: 0 auto 14px;
  display: grid; grid-template-columns: 1.1fr repeat(3, 1fr); gap: 10px;
}
.kx-clock, .kx-metric {
  background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.08);
  border-radius: 18px; padding: 14px 16px;
}
.kx-clock .lbl, .kx-metric .lbl {
  font-size: 0.68rem; letter-spacing: 0.08em; text-transform: uppercase; color: #94a3b8; font-weight: 800;
}
.kx-clock #examClock {
  font-family: 'IBM Plex Mono', ui-monospace, monospace;
  font-size: clamp(2rem, 4vw, 2.8rem); font-weight: 700; color: #fff; line-height: 1.1; margin-top: 4px;
}
.kx-clock.is-low #examClock { color: #fb7185; }
.kx-metric b {
  display: block; margin-top: 4px; font-size: 1.45rem; color: #fff; font-weight: 800;
  font-family: 'IBM Plex Mono', ui-monospace, monospace;
}
.kx-progress { width: min(1180px, 100%); margin: 0 auto 14px; height: 6px; background: rgba(255,255,255,0.08); border-radius: 99px; overflow: hidden; }
.kx-progress i { display: block; height: 100%; width: 0; background: linear-gradient(90deg, var(--ks-red), #fb7185); transition: width .2s linear; }

.kx-type {
  width: min(1180px, 100%);
  margin: 0 auto;
  background: #f4f7fb;
  border-radius: 24px;
  padding: 16px 16px 14px;
  box-shadow: 0 30px 80px rgba(0,0,0,0.35);
  color: #0f172a;
}
.kx-type-h {
  display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap;
  margin: 0 2px 10px; font-size: 0.8rem; font-weight: 700; color: #64748b;
}
.kx-type-h strong { color: #0f172a; }
.kx-type .tp-stage { margin-bottom: 8px; }
.kx-type .tp-target {
  min-height: 8.6em;
  max-height: min(46vh, 380px);
  font-family: 'Source Serif 4', 'Georgia', 'Times New Roman', serif;
  font-optical-sizing: auto;
  font-size: clamp(1.2rem, 1.35vw + 0.55rem, 1.58rem);
  font-weight: 650;
  line-height: 1.95;
  letter-spacing: 0.005em;
  gap: 0.18em 0.38em;
}
.kx-type .tp-word { padding: 1px 4px; border-radius: 6px; }
.kx-type .tp-word.is-cur {
  background: #ffe4e6;
  box-shadow: inset 0 -3px 0 #e30613;
}
body.kx-is-running .kx-type .tp-stage {
  border-color: rgba(227, 6, 19, 0.28);
  box-shadow: 0 10px 28px rgba(227, 6, 19, 0.08);
}
.kx-fonts { display: flex; gap: 6px; }
.kx-fonts button {
  width: 36px; height: 36px; border-radius: 10px; border: 1px solid #e2e8f0; background: #fff; font-weight: 800; cursor: pointer;
}

.kx-bar {
  width: min(1180px, 100%); margin: 14px auto 0;
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
}
.kx-start, .kx-finish {
  appearance: none; border: 0; cursor: pointer; border-radius: 14px;
  padding: 13px 22px; font-weight: 900; font-size: 0.95rem;
  display: inline-flex; align-items: center; gap: 8px;
}
.kx-start { background: linear-gradient(135deg, var(--ks-red), var(--ks-red-2)); color: #fff; box-shadow: 0 10px 24px rgba(227,6,19,.3); }
.kx-start:disabled, .kx-finish:disabled { opacity: .45; cursor: not-allowed; box-shadow: none; }
body.kx-is-running #examStart { display: none; }
.kx-finish { background: rgba(255,255,255,0.06); color: #fff; border: 1px solid rgba(255,255,255,0.12); }
.kx-toggle { display: inline-flex; align-items: center; gap: 8px; color: #94a3b8; font-size: 0.8rem; font-weight: 700; margin-left: auto; }
#examSaveHint { font-size: 0.8rem; color: #86efac; font-weight: 700; }

.kx-modal .modal-content {
  border: 0; border-radius: 22px; overflow: hidden; background: #0f172a; color: #e2e8f0;
}
.kx-modal .modal-header, .kx-modal .modal-footer { border-color: rgba(255,255,255,0.08); }
.kx-modal .modal-title { font-weight: 800; color: #fff; }
.kx-modal .btn-close { filter: invert(1); }
.kx-res-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-bottom: 16px; }
.kx-res {
  background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.08);
  border-radius: 16px; padding: 14px; text-align: center;
}
.kx-res .lbl { font-size: 0.7rem; text-transform: uppercase; letter-spacing: .08em; color: #94a3b8; font-weight: 800; }
.kx-res .val { font-size: 1.6rem; font-weight: 900; color: #fff; font-family: 'IBM Plex Mono', ui-monospace, monospace; }
.kx-verdict { border-radius: 16px; padding: 14px 16px; margin-bottom: 14px; font-weight: 700; }
.kx-verdict.ok { background: rgba(22,163,74,.15); color: #86efac; }
.kx-verdict.bad { background: rgba(227,6,19,.15); color: #fda4af; }
.kx-lists { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.kx-lists h6 { color: #fff; font-weight: 800; }
.kx-lists ul { margin: 0; padding-left: 18px; }
.exam-celebrate {
  background:
    radial-gradient(circle at 20% 10%, rgba(255,215,0,.2), transparent 35%),
    radial-gradient(circle at 80% 20%, rgba(34,197,94,.16), transparent 40%),
    #0f172a !important;
  color: #fff;
  border: 0 !important;
}
.exam-celebrate h2, .exam-celebrate .sub { color: #fff !important; }
.exam-celebrate .sub { opacity: .75; }

@media (max-width: 800px) {
  .kx-hud { grid-template-columns: 1fr 1fr; }
  .kx-clock { grid-column: 1 / -1; }
  .kx-lists, .kx-res-grid { grid-template-columns: 1fr; }
  .kx-toggle { margin-left: 0; }
}