.cvss-app,
.cvss-app * { box-sizing: border-box; }

.cvss-app {
  --cvss-navy: #0c2c52;
  --cvss-navy-2: #173f6a;
  --cvss-teal: #149777;
  --cvss-teal-dark: #0b6d56;
  --cvss-gold: #d7a62f;
  --cvss-ink: #172033;
  --cvss-muted: #667085;
  --cvss-line: #dfe6ef;
  --cvss-soft: #f4f7fb;
  --cvss-white: #fff;
  --cvss-danger: #a9362c;
  --cvss-radius-xl: 28px;
  --cvss-radius-lg: 20px;
  --cvss-radius-md: 14px;
  width: 100%;
  min-height: 780px;
  color: var(--cvss-ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
  background:
    radial-gradient(circle at 8% 0%, rgba(20,151,119,.12), transparent 31%),
    radial-gradient(circle at 100% 10%, rgba(215,166,47,.10), transparent 28%),
    #eef3f8;
  border-radius: 28px;
  overflow: hidden;
}

.cvss-app button,
.cvss-app input,
.cvss-app textarea,
.cvss-app select { font: inherit; }

.cvss-shell {
  min-height: 780px;
  background: rgba(255,255,255,.95);
  display: grid;
  grid-template-rows: auto 1fr auto;
  box-shadow: 0 18px 70px rgba(15,35,65,.12);
}

.cvss-topbar {
  min-height: 74px;
  padding: 13px clamp(16px, 4vw, 32px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  background: rgba(255,255,255,.96);
  border-bottom: 1px solid var(--cvss-line);
}

.cvss-brand {
  display: flex;
  align-items: center;
  gap: 11px;
  border: 0;
  background: transparent;
  color: var(--cvss-navy);
  padding: 0;
  cursor: pointer;
  text-align: left;
}

.cvss-brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  color: white;
  font-weight: 900;
  font-size: 20px;
  background: linear-gradient(145deg, var(--cvss-navy), var(--cvss-teal));
  box-shadow: 0 9px 20px rgba(12,44,82,.22);
}

.cvss-brand strong,
.cvss-brand small { display: block; line-height: 1.08; }
.cvss-brand strong { font-size: 15px; letter-spacing: .04em; }
.cvss-brand small { color: var(--cvss-teal-dark); font-size: 11px; font-weight: 800; letter-spacing: .14em; margin-top: 4px; }

.cvss-top-actions { display: flex; align-items: center; gap: 8px; }
.cvss-pill { display: inline-flex; padding: 7px 11px; border-radius: 999px; background: #fff6da; color: #8a6400; font-size: 12px; font-weight: 800; }
.cvss-icon-btn { width: 40px; height: 40px; border: 1px solid var(--cvss-line); border-radius: 13px; background: white; color: var(--cvss-navy); cursor: pointer; font-weight: 900; font-size: 20px; }

.cvss-stage { min-height: 0; overflow-y: auto; padding: clamp(22px, 5vw, 52px); }
.cvss-view { max-width: 1020px; margin: 0 auto; animation: cvss-enter .28s ease both; }
@keyframes cvss-enter { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

.cvss-eyebrow { display: inline-flex; align-items: center; gap: 8px; color: var(--cvss-teal-dark); font-size: 12px; font-weight: 900; letter-spacing: .11em; text-transform: uppercase; margin-bottom: 13px; }
.cvss-eyebrow::before { content: ""; width: 24px; height: 3px; border-radius: 20px; background: var(--cvss-gold); }

.cvss-app h1, .cvss-app h2, .cvss-app h3, .cvss-app p { margin-top: 0; }
.cvss-app h1 { color: var(--cvss-navy); font-size: clamp(34px, 6vw, 62px); line-height: 1.03; letter-spacing: -.04em; margin-bottom: 17px; }
.cvss-app h2 { color: var(--cvss-navy); font-size: clamp(26px, 4vw, 40px); line-height: 1.12; letter-spacing: -.025em; margin-bottom: 12px; }
.cvss-app h3 { color: var(--cvss-navy); font-size: 18px; line-height: 1.25; margin-bottom: 8px; }
.cvss-lead { max-width: 760px; color: #465467; font-size: clamp(16px, 2.3vw, 20px); line-height: 1.65; }
.cvss-muted { color: var(--cvss-muted); }

.cvss-actions { display: flex; flex-wrap: wrap; gap: 11px; margin-top: 24px; }
.cvss-btn { min-height: 48px; border: 0; border-radius: 15px; padding: 12px 18px; cursor: pointer; font-weight: 850; display: inline-flex; align-items: center; justify-content: center; gap: 8px; transition: .18s ease; }
.cvss-btn:hover { transform: translateY(-1px); }
.cvss-btn-primary { color: white; background: linear-gradient(135deg, var(--cvss-navy), var(--cvss-navy-2)); box-shadow: 0 11px 24px rgba(12,44,82,.2); }
.cvss-btn-secondary { color: var(--cvss-navy); background: white; border: 1px solid var(--cvss-line); }
.cvss-btn-ghost { color: var(--cvss-muted); background: transparent; padding-inline: 4px; }

.cvss-hero { min-height: 610px; display: grid; align-items: center; }
.cvss-hero-grid { display: grid; grid-template-columns: minmax(0,1.15fr) minmax(280px,.85fr); gap: clamp(28px, 6vw, 68px); align-items: center; }
.cvss-title-accent { color: var(--cvss-teal); }
.cvss-stat-row { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 11px; margin-top: 28px; }
.cvss-stat { padding: 15px; background: var(--cvss-soft); border: 1px solid var(--cvss-line); border-radius: var(--cvss-radius-md); }
.cvss-stat strong { display: block; color: var(--cvss-navy); font-size: 22px; }
.cvss-stat span { color: var(--cvss-muted); font-size: 12px; font-weight: 700; }
.cvss-visual-card { background: linear-gradient(145deg,#0c2c52 0%,#153d68 58%,#149777 100%); color: white; min-height: 410px; border-radius: var(--cvss-radius-xl); padding: clamp(24px,4vw,36px); box-shadow: 0 24px 54px rgba(12,44,82,.24); display: flex; flex-direction: column; justify-content: space-between; overflow: hidden; position: relative; }
.cvss-visual-card::before { content: ""; position: absolute; width: 270px; height: 270px; border-radius: 999px; top: -110px; right: -100px; background: rgba(255,255,255,.08); }
.cvss-visual-top, .cvss-visual-bottom { position: relative; z-index: 2; }
.cvss-visual-top span { display: inline-flex; border: 1px solid rgba(255,255,255,.25); border-radius: 999px; padding: 8px 12px; font-size: 12px; font-weight: 800; }
.cvss-visual-number { position: relative; z-index: 2; font-size: clamp(92px,18vw,145px); line-height: .8; font-weight: 950; letter-spacing: -.08em; }
.cvss-visual-card p { margin-bottom: 0; color: rgba(255,255,255,.83); }

.cvss-dashboard-head { display: grid; grid-template-columns: minmax(0,1fr) auto; align-items: center; gap: 22px; margin-bottom: 26px; }
.cvss-progress-ring { --value: 0deg; width: 106px; height: 106px; border-radius: 50%; background: conic-gradient(var(--cvss-teal) var(--value),#e8eef5 0); display: grid; place-items: center; position: relative; }
.cvss-progress-ring::before { content: ""; width: 78px; height: 78px; border-radius: 50%; background: white; position: absolute; }
.cvss-progress-ring div { position: relative; z-index: 2; text-align: center; }
.cvss-progress-ring strong { display: block; color: var(--cvss-navy); font-size: 23px; line-height: 1; }
.cvss-progress-ring small { color: var(--cvss-muted); font-size: 11px; font-weight: 800; }

.cvss-module { background: white; border: 1px solid var(--cvss-line); border-radius: var(--cvss-radius-lg); padding: clamp(19px,3.5vw,27px); margin-bottom: 21px; box-shadow: 0 12px 30px rgba(18,41,72,.06); }
.cvss-module-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 18px; margin-bottom: 18px; }
.cvss-module-number { display: inline-flex; color: var(--cvss-teal-dark); background: #e8f7f2; border-radius: 999px; padding: 7px 11px; font-size: 12px; font-weight: 900; margin-bottom: 9px; }
.cvss-module-progress { min-width: 80px; text-align: right; }
.cvss-module-progress strong { display: block; color: var(--cvss-navy); }
.cvss-module-progress span { color: var(--cvss-muted); font-size: 12px; }
.cvss-lessons { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 11px; }
.cvss-lesson-card { width: 100%; min-height: 100px; padding: 14px; border-radius: var(--cvss-radius-md); border: 1px solid var(--cvss-line); background: white; text-align: left; color: var(--cvss-ink); display: grid; grid-template-columns: 43px minmax(0,1fr) auto; align-items: center; gap: 12px; transition: .2s ease; }
button.cvss-lesson-card { cursor: pointer; }
button.cvss-lesson-card:hover { transform: translateY(-2px); border-color: #aebed1; box-shadow: 0 10px 20px rgba(12,44,82,.08); }
.cvss-lesson-card.is-open { border-color: rgba(20,151,119,.55); background: linear-gradient(135deg,#fff,#f1fbf8); }
.cvss-lesson-card.is-locked { opacity: .62; background: #f7f9fc; }
.cvss-lesson-number { width: 43px; height: 43px; border-radius: 14px; display: grid; place-items: center; color: var(--cvss-navy); background: #eaf0f7; font-weight: 950; }
.cvss-lesson-card.is-open .cvss-lesson-number { color: white; background: linear-gradient(145deg,var(--cvss-teal),var(--cvss-teal-dark)); }
.cvss-lesson-copy strong, .cvss-lesson-copy small { display: block; }
.cvss-lesson-copy strong { color: var(--cvss-navy); font-size: 15px; line-height: 1.25; }
.cvss-lesson-copy small { color: var(--cvss-muted); margin-top: 5px; line-height: 1.35; }
.cvss-status { font-size: 11px; font-weight: 900; border-radius: 999px; padding: 7px 9px; white-space: nowrap; }
.cvss-status.open { background: #e5f7f0; color: #08664f; }
.cvss-status.locked { background: #edf1f6; color: #687386; }
.cvss-checkpoint { margin-top: 12px; border: 1px dashed #c5a246; background: #fffaf0; color: #755600; border-radius: var(--cvss-radius-md); padding: 14px 16px; font-weight: 800; display: flex; justify-content: space-between; gap: 15px; }

.cvss-player { max-width: 900px; margin: 0 auto; }
.cvss-player-head { display: grid; grid-template-columns: minmax(0,1fr) auto; align-items: center; gap: 15px; margin-bottom: 13px; }
.cvss-player-head strong, .cvss-player-head small { display: block; }
.cvss-player-head strong { color: var(--cvss-navy); font-size: 15px; }
.cvss-player-head small { color: var(--cvss-muted); font-size: 12px; margin-top: 3px; }
.cvss-score-pill { border: 1px solid var(--cvss-line); background: white; color: var(--cvss-navy); border-radius: 999px; padding: 8px 11px; font-size: 12px; font-weight: 900; white-space: nowrap; }
.cvss-progressbar { height: 8px; border-radius: 999px; background: #e7edf4; overflow: hidden; margin-bottom: 14px; }
.cvss-progressbar span { display: block; height: 100%; border-radius: inherit; background: linear-gradient(90deg,var(--cvss-teal),var(--cvss-gold)); transition: width .25s ease; }
.cvss-screen { min-height: 570px; border-radius: var(--cvss-radius-xl); border: 1px solid var(--cvss-line); background: radial-gradient(circle at 100% 0%,rgba(20,151,119,.07),transparent 31%),white; box-shadow: 0 18px 45px rgba(18,41,72,.09); padding: clamp(21px,4vw,42px); }
.cvss-screen-top { display: flex; justify-content: space-between; gap: 14px; align-items: center; margin-bottom: 19px; }
.cvss-step-label { color: var(--cvss-teal-dark); font-size: 12px; font-weight: 900; letter-spacing: .1em; text-transform: uppercase; }
.cvss-step-count { color: var(--cvss-muted); font-size: 12px; font-weight: 800; }
.cvss-screen-intro { color: #465467; font-size: clamp(16px,2vw,19px); line-height: 1.65; max-width: 760px; }
.cvss-player-footer { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: 12px; }

.cvss-field { width: 100%; min-height: 118px; resize: vertical; margin-top: 16px; padding: 14px 15px; border-radius: var(--cvss-radius-md); border: 1px solid #cbd6e3; background: #fbfcfe; color: var(--cvss-ink); outline: none; line-height: 1.55; }
.cvss-field:focus { border-color: var(--cvss-teal); box-shadow: 0 0 0 4px rgba(20,151,119,.12); }
.cvss-field.short { min-height: 72px; }

.cvss-dialogue-list { display: grid; gap: 11px; margin-top: 22px; }
.cvss-dialogue { max-width: 88%; border-radius: 18px; padding: 13px 15px; border: 1px solid var(--cvss-line); }
.cvss-dialogue.left { justify-self: start; background: #eef5ff; border-bottom-left-radius: 5px; }
.cvss-dialogue.right { justify-self: end; background: #eaf8f3; border-bottom-right-radius: 5px; }
.cvss-dialogue.center { max-width: 100%; justify-self: stretch; background: #fff8e8; text-align: center; }
.cvss-speaker { display: block; color: var(--cvss-navy); font-size: 11px; font-weight: 900; letter-spacing: .08em; text-transform: uppercase; margin-bottom: 5px; }

.cvss-options { display: grid; gap: 10px; margin-top: 22px; }
.cvss-option { width: 100%; border: 1px solid var(--cvss-line); border-radius: var(--cvss-radius-md); background: white; color: var(--cvss-ink); cursor: pointer; padding: 13px 14px; display: grid; grid-template-columns: 34px minmax(0,1fr); gap: 11px; text-align: left; align-items: start; transition: .18s ease; }
.cvss-option:hover { transform: translateY(-1px); border-color: #aebed1; }
.cvss-option.is-selected { border-color: var(--cvss-navy-2); background: #f2f7fc; }
.cvss-option.is-correct { border-color: var(--cvss-teal); background: #eaf8f3; }
.cvss-option.is-wrong { border-color: #dca5a0; background: #fff3f2; }
.cvss-letter { width: 34px; height: 34px; display: grid; place-items: center; border-radius: 11px; background: #edf2f7; color: var(--cvss-navy); font-weight: 950; }

.cvss-feedback { margin-top: 15px; border-radius: var(--cvss-radius-md); padding: 13px 15px; border: 1px solid var(--cvss-line); line-height: 1.55; font-weight: 700; }
.cvss-feedback.good { background: #eaf8f3; border-color: #9ed6c5; color: #075a46; }
.cvss-feedback.bad { background: #fff2f1; border-color: #e4aaa5; color: #8f251e; }
.cvss-feedback.neutral { background: #f2f6fb; color: var(--cvss-navy); }
.cvss-principle { margin: 21px 0; padding: 19px; border-left: 5px solid var(--cvss-gold); border-radius: 0 var(--cvss-radius-md) var(--cvss-radius-md) 0; background: #fff9eb; color: var(--cvss-navy); font-size: clamp(18px,2.3vw,22px); font-weight: 850; line-height: 1.5; }
.cvss-info { margin-top: 18px; padding: 17px; border-radius: var(--cvss-radius-md); background: var(--cvss-soft); border: 1px solid var(--cvss-line); }
.cvss-info strong { color: var(--cvss-navy); }

.cvss-cards { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 11px; margin-top: 20px; }
.cvss-card { border: 1px solid var(--cvss-line); border-radius: var(--cvss-radius-md); padding: 16px; background: white; }
.cvss-card strong { display: block; color: var(--cvss-navy); margin-bottom: 6px; }
.cvss-card span { color: var(--cvss-muted); font-size: 13px; line-height: 1.45; }

.cvss-order-pool { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 19px; }
.cvss-order-item { border: 1px solid var(--cvss-line); background: white; color: var(--cvss-navy); border-radius: 12px; padding: 10px 12px; cursor: pointer; font-weight: 800; }
.cvss-order-item.is-used { opacity: .35; pointer-events: none; }
.cvss-order-zone { min-height: 84px; margin-top: 16px; padding: 12px; border: 2px dashed #c9d4e1; border-radius: var(--cvss-radius-md); display: flex; flex-wrap: wrap; gap: 8px; align-items: center; background: #f8fafc; }
.cvss-chip { border-radius: 999px; padding: 9px 11px; background: var(--cvss-navy); color: white; font-size: 12px; font-weight: 850; }

.cvss-check-grid { display: grid; gap: 9px; margin-top: 17px; }
.cvss-check { display: flex; align-items: flex-start; gap: 10px; border: 1px solid var(--cvss-line); border-radius: 12px; padding: 11px 12px; background: #fbfcfe; }
.cvss-check input { width: 18px; height: 18px; margin-top: 2px; accent-color: var(--cvss-teal); }

.cvss-rating { display: grid; gap: 10px; margin-top: 19px; }
.cvss-rating-item { border: 1px solid var(--cvss-line); border-radius: 13px; padding: 13px; background: #fbfcfe; }
.cvss-rating-item strong { display: block; color: var(--cvss-navy); margin-bottom: 9px; }
.cvss-rating-buttons { display: grid; grid-template-columns: repeat(4,1fr); gap: 7px; }
.cvss-rate { min-height: 48px; border: 1px solid var(--cvss-line); border-radius: 11px; background: white; color: var(--cvss-navy); cursor: pointer; font-weight: 900; }
.cvss-rate.is-selected { border-color: var(--cvss-teal); background: #eaf8f3; }

.cvss-result { display: grid; grid-template-columns: minmax(0,.8fr) minmax(0,1.2fr); gap: 21px; align-items: center; margin-top: 21px; }
.cvss-score-circle { --angle: 0deg; width: 176px; height: 176px; margin: 0 auto; border-radius: 50%; background: conic-gradient(var(--cvss-teal) var(--angle),#e6edf4 0); display: grid; place-items: center; position: relative; }
.cvss-score-circle::before { content: ""; width: 135px; height: 135px; border-radius: 50%; background: white; position: absolute; }
.cvss-score-circle div { position: relative; z-index: 2; text-align: center; }
.cvss-score-circle strong { display: block; color: var(--cvss-navy); font-size: 40px; line-height: 1; }
.cvss-score-circle span { color: var(--cvss-muted); font-size: 12px; font-weight: 800; }
.cvss-badge { padding: 16px; border-radius: var(--cvss-radius-md); background: linear-gradient(135deg,#fff7dc,#fffdf4); border: 1px solid #e2c56e; }
.cvss-badge strong { display: block; color: #755600; font-size: 18px; }

.cvss-bottom-nav { min-height: 70px; display: grid; grid-template-columns: repeat(3,1fr); background: rgba(255,255,255,.97); border-top: 1px solid var(--cvss-line); }
.cvss-bottom-nav button { border: 0; background: transparent; color: #7b8797; cursor: pointer; display: grid; place-content: center; gap: 2px; font-weight: 850; }
.cvss-bottom-nav button span { font-size: 20px; line-height: 1; }
.cvss-bottom-nav button small { font-size: 11px; }
.cvss-bottom-nav button.is-active { color: var(--cvss-teal-dark); background: linear-gradient(180deg,transparent,rgba(20,151,119,.08)); }
.cvss-shell.is-player .cvss-bottom-nav { display: none; }

.cvss-toast { position: fixed; left: 50%; bottom: 24px; z-index: 99999; transform: translate(-50%,18px); max-width: min(90vw,520px); border-radius: 14px; padding: 12px 15px; background: var(--cvss-navy); color: white; box-shadow: 0 14px 35px rgba(12,44,82,.25); opacity: 0; pointer-events: none; transition: .22s ease; text-align: center; font-weight: 800; }
.cvss-toast.show { opacity: 1; transform: translate(-50%,0); }

@media (max-width: 840px) {
  .cvss-hero-grid { grid-template-columns: 1fr; }
  .cvss-visual-card { min-height: 290px; }
  .cvss-lessons { grid-template-columns: 1fr; }
}

@media (max-width: 650px) {
  .cvss-app { min-height: 100vh; border-radius: 0; }
  .cvss-shell { min-height: 100vh; }
  .cvss-stage { padding: 22px 15px 27px; }
  .cvss-topbar { min-height: 66px; padding: 11px 13px; }
  .cvss-pill { display: none; }
  .cvss-dashboard-head, .cvss-result { grid-template-columns: 1fr; }
  .cvss-stat-row, .cvss-cards { grid-template-columns: 1fr; }
  .cvss-screen { min-height: calc(100vh - 150px); border-radius: 20px; padding: 20px 16px 25px; }
  .cvss-dialogue { max-width: 96%; }
  .cvss-lesson-card { grid-template-columns: 40px minmax(0,1fr); }
  .cvss-status { grid-column: 2; justify-self: start; }
  .cvss-checkpoint { flex-direction: column; }
  .cvss-rating-buttons { grid-template-columns: repeat(2,1fr); }
}

@media (prefers-reduced-motion: reduce) {
  .cvss-app *, .cvss-app *::before, .cvss-app *::after { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}