:root {
  --ink: #071716;
  --ink-soft: #243938;
  --muted: #5a726f;
  --fog: #e8f3f0;
  --paper: #f4faf8;
  --teal-950: #042927;
  --teal-900: #063b38;
  --teal-700: #0c5c57;
  --teal-500: #1aa39a;
  --teal-300: #7ad4cc;
  --mint: #c9f7ef;
  --sand: #dceae5;
  --ok: #1b8f5e;
  --bad: #c23a2d;
  --line: rgba(6, 59, 56, 0.14);
  --shadow: 0 28px 70px rgba(4, 41, 39, 0.18);
  --radius: 22px;
  --font-display: "Fraunces", Georgia, serif;
  --font-ui: "Sora", system-ui, sans-serif;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: var(--font-ui);
  background: #d9ebe6;
  line-height: 1.55;
}

.atmosphere {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.atmosphere-wash {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(1000px 520px at 12% -8%, rgba(122, 212, 204, 0.55), transparent 60%),
    radial-gradient(900px 480px at 92% 8%, rgba(6, 59, 56, 0.28), transparent 55%),
    linear-gradient(165deg, #edf7f4 0%, #d7ebe6 42%, #cfe3df 100%);
}

.atmosphere-beam {
  position: absolute;
  width: 55vmax;
  height: 55vmax;
  right: -12%;
  top: -18%;
  border-radius: 50%;
  background: conic-gradient(from 210deg, rgba(26, 163, 154, 0.22), transparent 55%, rgba(201, 247, 239, 0.18));
  filter: blur(8px);
  animation: drift 18s ease-in-out infinite;
}

.atmosphere-noise {
  position: absolute;
  inset: 0;
  opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

@keyframes drift {
  0%, 100% { transform: translate(0, 0) rotate(0deg); }
  50% { transform: translate(-3%, 4%) rotate(12deg); }
}

.site-header, main, .site-footer { position: relative; z-index: 1; }

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.95rem clamp(1rem, 4vw, 2.5rem);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
  background: rgba(244, 250, 248, 0.72);
  position: sticky;
  top: 0;
  z-index: 30;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  text-decoration: none;
  color: inherit;
}

.brand-mark {
  width: 1.55rem;
  height: 1.55rem;
  border-radius: 0.5rem;
  background: linear-gradient(145deg, var(--teal-500), var(--teal-950));
  box-shadow: inset 0 0 0 2px rgba(255,255,255,0.22), 0 8px 18px rgba(6,59,56,0.25);
  position: relative;
}

.brand-mark::after {
  content: "";
  position: absolute;
  inset: 28%;
  background: var(--mint);
  clip-path: polygon(40% 0, 60% 0, 60% 40%, 100% 40%, 100% 60%, 60% 60%, 60% 100%, 40% 100%, 40% 60%, 0 60%, 0 40%, 40% 40%);
}

.brand-text {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}

.brand-text span { color: var(--teal-500); font-weight: 500; }

.nav { display: flex; gap: 0.2rem; flex-wrap: wrap; }

.nav button {
  border: 0;
  background: transparent;
  color: var(--ink-soft);
  font: inherit;
  font-size: 0.88rem;
  font-weight: 500;
  padding: 0.55rem 0.8rem;
  border-radius: 999px;
  cursor: pointer;
  transition: background 0.25s var(--ease), color 0.25s var(--ease);
}

.nav button:hover, .nav button.is-active {
  background: rgba(12, 92, 87, 0.1);
  color: var(--teal-900);
}

.menu-toggle {
  display: none;
  width: 2.5rem;
  height: 2.5rem;
  border: 1px solid var(--line);
  border-radius: 0.75rem;
  background: white;
  cursor: pointer;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
}

.menu-toggle span {
  display: block;
  width: 1rem;
  height: 2px;
  background: var(--ink);
}

.view { display: none; animation: rise 0.55s var(--ease) both; }
.view.is-active { display: block; }

@keyframes rise {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: none; }
}

.hero {
  min-height: calc(100vh - 4.4rem);
  display: grid;
  grid-template-columns: 1.35fr 0.9fr;
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: center;
  padding: clamp(2rem, 6vw, 4.5rem);
  position: relative;
  overflow: hidden;
}

.hero-visual {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-pulse {
  position: absolute;
  width: 46vmax;
  height: 46vmax;
  right: -8%;
  top: 5%;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(26,163,154,0.28) 0%, transparent 68%);
  animation: pulse 6.5s ease-in-out infinite;
}

.hero-scan {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(6,59,56,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(6,59,56,0.05) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse at 60% 40%, black 10%, transparent 72%);
}

.hero-wave {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 34%;
  fill: rgba(6, 59, 56, 0.08);
  animation: waveShift 10s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 0.9; }
  50% { transform: scale(1.08); opacity: 1; }
}

@keyframes waveShift {
  0%, 100% { transform: translateX(0); }
  50% { transform: translateX(-2%); }
}

.hero-copy, .hero-meter { position: relative; z-index: 1; }

.eyebrow {
  margin: 0 0 1rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--teal-700);
}

.brand-hero {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(3.5rem, 10vw, 7rem);
  line-height: 0.9;
  letter-spacing: -0.045em;
  color: var(--teal-950);
}

.brand-hero span {
  display: block;
  color: var(--teal-500);
  font-weight: 500;
}

.lede {
  max-width: 36rem;
  margin: 1.35rem 0 2rem;
  font-size: 1.08rem;
  color: var(--ink-soft);
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.cta-row.center { justify-content: center; }

.btn {
  border: 0;
  border-radius: 999px;
  padding: 0.9rem 1.4rem;
  font: inherit;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease), background 0.2s;
}

.btn:hover { transform: translateY(-2px); }
.btn:disabled { opacity: 0.45; cursor: not-allowed; transform: none; }

.btn-primary {
  background: linear-gradient(135deg, var(--teal-700), var(--teal-950));
  color: #f3fffc;
  box-shadow: 0 14px 32px rgba(4, 41, 39, 0.3);
}

.btn-ghost {
  background: rgba(255,255,255,0.72);
  color: var(--teal-900);
  border: 1px solid var(--line);
}

.btn.danger {
  color: var(--bad);
  border-color: rgba(194, 58, 45, 0.28);
  margin-top: 1.5rem;
}

.hero-meter {
  display: grid;
  gap: 0.85rem;
  padding-bottom: 0.5rem;
}

.meter-card {
  padding: 1.2rem 1.35rem;
  background: rgba(255,255,255,0.78);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow);
  animation: rise 0.7s var(--ease) both;
}

.meter-main {
  background:
    linear-gradient(160deg, rgba(255,255,255,0.92), rgba(201,247,239,0.35)),
    white;
}

.meter-label {
  display: block;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--teal-700);
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.meter-card strong {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5vw, 3.4rem);
  color: var(--teal-900);
  line-height: 1;
}

.meter-sub { color: var(--muted); font-size: 0.9rem; }

.meter-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.meter-chip {
  padding: 0.55rem 0.75rem;
  border-radius: 999px;
  background: rgba(255,255,255,0.7);
  border: 1px solid var(--line);
  font-size: 0.82rem;
  color: var(--ink-soft);
}

.meter-chip b { color: var(--teal-700); margin-right: 0.25rem; }

.band-dark {
  background: linear-gradient(160deg, var(--teal-950), #0a4a45 55%, #0d5f58);
  color: #e8f7f4;
  margin: 0;
  position: relative;
  overflow: hidden;
}

.band-dark::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(600px 280px at 80% 20%, rgba(122,212,204,0.2), transparent 60%),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: auto, 42px 42px;
  opacity: 0.7;
}

.band-inner {
  position: relative;
  max-width: 1100px;
  margin: 0 auto;
  padding: clamp(2.5rem, 6vw, 4rem) clamp(1.25rem, 4vw, 2.5rem);
}

.band-dark h2,
.modes h2,
.panel h2 {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 3.4vw, 2.7rem);
  margin: 0 0 0.75rem;
  letter-spacing: -0.03em;
}

.band-dark p { max-width: 42rem; color: rgba(232,247,244,0.86); }

.pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 1.8rem;
}

.pillars article {
  padding: 1.2rem;
  border-radius: 18px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
}

.pillars h3 {
  margin: 0 0 0.45rem;
  font-size: 1.05rem;
  font-family: var(--font-display);
  color: var(--mint);
}

.pillars p { margin: 0; font-size: 0.92rem; color: rgba(232,247,244,0.8); }

.modes, .panel {
  padding: clamp(2rem, 5vw, 3.5rem);
  max-width: 1100px;
  margin: 0 auto;
}

.panel-lede { color: var(--ink-soft); max-width: 46rem; }

.mode-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-top: 1.5rem;
}

.mode-card {
  text-align: left;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.78);
  border-radius: var(--radius);
  padding: 1.3rem;
  cursor: pointer;
  display: grid;
  gap: 0.45rem;
  transition: transform 0.25s var(--ease), border-color 0.25s, box-shadow 0.25s;
  font: inherit;
  color: inherit;
}

.mode-card:hover {
  transform: translateY(-5px);
  border-color: rgba(26,163,154,0.5);
  box-shadow: var(--shadow);
}

.mode-kicker {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--teal-500);
  font-weight: 700;
}

.mode-card strong { font-size: 1.12rem; }
.mode-card span:last-child { color: var(--muted); font-size: 0.9rem; }

.panel {
  background: rgba(255,255,255,0.82);
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) + 6px);
  box-shadow: var(--shadow);
  margin-top: 1.5rem;
  margin-bottom: 1.5rem;
}

.path-panel { max-width: 1000px; }

.ready-hero {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1.5rem;
  align-items: center;
  margin: 1.5rem 0 2rem;
}

.ready-ring {
  width: 160px;
  aspect-ratio: 1;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background:
    radial-gradient(circle at center, white 58%, transparent 59%),
    conic-gradient(var(--teal-500) var(--pct), rgba(6,59,56,0.12) 0);
  box-shadow: var(--shadow);
}

.ready-ring strong {
  font-family: var(--font-display);
  font-size: 2.2rem;
  color: var(--teal-900);
  line-height: 1;
}

.ready-ring span { color: var(--muted); font-size: 0.85rem; }

.ready-copy h3 {
  margin: 0 0 0.4rem;
  font-family: var(--font-display);
  color: var(--teal-900);
  font-size: 1.5rem;
}

.ready-copy p { margin: 0 0 1rem; color: var(--ink-soft); }

.gate-grid {
  display: grid;
  gap: 0.75rem;
}

.gate {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.35rem 1rem;
  padding: 1rem 1.1rem;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: var(--fog);
}

.gate.is-cleared {
  background: rgba(27,143,94,0.1);
  border-color: rgba(27,143,94,0.28);
}

.gate-title { font-weight: 600; color: var(--teal-900); }
.gate-meta { color: var(--muted); font-size: 0.88rem; grid-column: 1 / -1; }
.gate-score { font-family: var(--font-display); font-size: 1.35rem; color: var(--teal-700); }
.gate-bar {
  grid-column: 1 / -1;
  height: 7px;
  border-radius: 999px;
  background: rgba(6,59,56,0.1);
  overflow: hidden;
}
.gate-bar i {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--teal-500), var(--teal-900));
}

.setup-form fieldset { border: 0; margin: 0 0 1.5rem; padding: 0; }
.setup-form legend { font-weight: 600; margin-bottom: 0.7rem; }

.chip-row { display: flex; flex-wrap: wrap; gap: 0.55rem; }

.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.55rem 0.9rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: white;
  cursor: pointer;
  font-size: 0.88rem;
}

.chip:has(input:checked) {
  background: rgba(26,163,154,0.12);
  border-color: var(--teal-500);
  color: var(--teal-900);
}

.chip input { accent-color: var(--teal-700); }

.check {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  margin-bottom: 0.55rem;
  color: var(--ink-soft);
}

#qCount { width: min(320px, 100%); accent-color: var(--teal-700); vertical-align: middle; }
#qCountOut { font-weight: 700; color: var(--teal-700); margin-left: 0.6rem; }

.quiz-shell {
  max-width: 920px;
  margin: 0 auto;
  padding: clamp(1.25rem, 4vw, 2.5rem);
  display: grid;
  gap: 1.15rem;
}

.quiz-top { display: grid; gap: 0.55rem; }

.quiz-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 500;
}

.quiz-bar {
  height: 7px;
  background: rgba(6,59,56,0.1);
  border-radius: 999px;
  overflow: hidden;
}

.quiz-bar i {
  display: block;
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--teal-500), var(--teal-900));
  transition: width 0.35s var(--ease);
}

.question-card, .rationale {
  background: rgba(255,255,255,0.88);
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) + 4px);
  box-shadow: var(--shadow);
}

.question-card { padding: clamp(1.25rem, 3vw, 2rem); }

.q-stem {
  font-size: 1.14rem;
  font-weight: 500;
  margin: 0 0 1.25rem;
}

.q-options { display: grid; gap: 0.65rem; }

.option {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.8rem;
  align-items: start;
  text-align: left;
  padding: 0.95rem 1rem;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: var(--fog);
  cursor: pointer;
  font: inherit;
  color: inherit;
  transition: border-color 0.2s, background 0.2s, transform 0.2s;
}

.option:hover:not(:disabled) {
  border-color: rgba(26,163,154,0.5);
  transform: translateX(3px);
}

.option.is-selected {
  border-color: var(--teal-500);
  background: rgba(26,163,154,0.12);
}

.option.is-correct {
  border-color: var(--ok);
  background: rgba(27,143,94,0.12);
}

.option.is-wrong {
  border-color: var(--bad);
  background: rgba(194,58,45,0.1);
}

.option:disabled { cursor: default; }

.option-key {
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-weight: 700;
  font-size: 0.8rem;
  background: white;
  border: 1px solid var(--line);
  color: var(--teal-700);
}

.q-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 1.35rem;
}

.rationale {
  padding: clamp(1.25rem, 3vw, 1.75rem);
  animation: rise 0.4s var(--ease) both;
}

.rationale-head {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}

.rationale h3, .rationale h4 {
  margin: 0;
  font-family: var(--font-display);
  color: var(--teal-900);
}

.rationale h4 {
  margin-top: 1.2rem;
  margin-bottom: 0.5rem;
  font-size: 1.1rem;
}

.badge {
  display: inline-flex;
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.badge.ok { background: rgba(27,143,94,0.15); color: var(--ok); }
.badge.bad { background: rgba(194,58,45,0.15); color: var(--bad); }

#rationaleWrong {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--ink-soft);
}

#rationaleWrong li { margin-bottom: 0.55rem; }

.strategy {
  margin: 1.1rem 0 0;
  padding: 0.95rem 1rem;
  border-left: 3px solid var(--teal-500);
  background: rgba(26,163,154,0.08);
  color: var(--ink-soft);
  border-radius: 0 14px 14px 0;
}

.results-panel { text-align: center; }

.score-ring {
  width: min(220px, 70vw);
  aspect-ratio: 1;
  margin: 1.5rem auto;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background:
    radial-gradient(circle at center, white 58%, transparent 59%),
    conic-gradient(var(--teal-500) var(--pct, 0%), rgba(6,59,56,0.12) 0);
  box-shadow: var(--shadow);
}

.score-ring strong {
  font-family: var(--font-display);
  font-size: 2.6rem;
  color: var(--teal-900);
  line-height: 1;
}

.score-ring span {
  display: block;
  color: var(--muted);
  font-size: 0.9rem;
  margin-top: 0.35rem;
}

.cat-verdict {
  font-size: 1.05rem;
  color: var(--ink-soft);
  max-width: 36rem;
  margin: 0 auto 1rem;
}

.weak-map {
  display: grid;
  gap: 0.55rem;
  margin: 1.5rem 0;
  text-align: left;
}

.weak-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.75rem;
  align-items: center;
  padding: 0.7rem 0.9rem;
  background: var(--fog);
  border-radius: 12px;
  border: 1px solid var(--line);
  font-size: 0.92rem;
}

.weak-bar {
  height: 6px;
  border-radius: 999px;
  background: rgba(6,59,56,0.1);
  overflow: hidden;
  grid-column: 1 / -1;
}

.weak-bar i {
  display: block;
  height: 100%;
  background: var(--teal-500);
}

.review-list {
  margin-top: 2rem;
  text-align: left;
  display: grid;
  gap: 0.75rem;
}

.review-item {
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--fog);
}

.review-item summary { cursor: pointer; font-weight: 600; }

.bank-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin: 1rem 0;
}

.bank-controls input, .bank-controls select {
  flex: 1;
  min-width: 180px;
  padding: 0.75rem 0.9rem;
  border-radius: 12px;
  border: 1px solid var(--line);
  font: inherit;
  background: white;
}

.bank-count { color: var(--muted); font-size: 0.9rem; }

.bank-list {
  display: grid;
  gap: 0.65rem;
  margin-top: 1rem;
  max-height: 70vh;
  overflow: auto;
}

.bank-item {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: white;
  padding: 0.9rem 1rem;
}

.bank-item summary { cursor: pointer; font-weight: 500; }

.bank-item .tag {
  display: inline-block;
  margin-top: 0.45rem;
  font-size: 0.72rem;
  color: var(--teal-700);
  background: rgba(26,163,154,0.1);
  padding: 0.2rem 0.5rem;
  border-radius: 999px;
}

.bank-detail {
  margin-top: 0.85rem;
  color: var(--ink-soft);
  font-size: 0.92rem;
}

.progress-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin: 1.25rem 0;
}

.progress-card {
  padding: 1.1rem;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: white;
}

.progress-card strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.8rem;
  color: var(--teal-700);
}

.guide article {
  margin: 1.5rem 0;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}

.guide h3 {
  font-family: var(--font-display);
  color: var(--teal-900);
  margin: 0 0 0.5rem;
}

.weight-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.55rem;
}

.weight-list li {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.7rem 0.9rem;
  background: white;
  border: 1px solid var(--line);
  border-radius: 12px;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  padding: 2rem clamp(1rem, 4vw, 2.5rem) 3rem;
  color: var(--muted);
  font-size: 0.9rem;
  border-top: 1px solid var(--line);
  margin-top: 1rem;
}

.site-footer p { margin: 0.35rem 0 0; }

@media (max-width: 960px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: 3rem;
  }
  .mode-grid, .pillars { grid-template-columns: 1fr 1fr; }
  .ready-hero { grid-template-columns: 1fr; justify-items: start; }
  .nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(244,250,248,0.97);
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    padding: 0.75rem;
  }
  .nav.is-open { display: flex; }
  .menu-toggle { display: inline-flex; }
  .progress-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .mode-grid, .pillars { grid-template-columns: 1fr; }
  .brand-hero { font-size: clamp(2.9rem, 14vw, 4.2rem); }
}