:root {
  --ink: #14223b;
  --muted: #5c6878;
  --blue: #1d5ea8;
  --blue-dark: #15477e;
  --blue-soft: #eaf3fc;
  --green: #18745a;
  --green-soft: #e8f6f0;
  --red: #b42318;
  --red-soft: #fff0ee;
  --amber: #a34f00;
  --amber-soft: #fff6e8;
  --line: #d8e0e8;
  --surface: #fff;
  --canvas: #f4f7fa;
  --shadow: 0 12px 35px rgba(20, 34, 59, .09);
  --radius: 16px;
  --focus: 0 0 0 4px rgba(29, 94, 168, .2);
}

* { box-sizing: border-box; }
html { min-width: 320px; background: var(--canvas); color: var(--ink); font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; }
body { margin: 0; min-height: 100vh; }
button, input, textarea, select { font: inherit; }
button, a, input, textarea { -webkit-tap-highlight-color: transparent; }
button { cursor: pointer; }
img { max-width: 100%; }

.skip-link { position: fixed; left: 1rem; top: -5rem; z-index: 100; padding: .75rem 1rem; color: white; background: var(--ink); border-radius: 8px; }
.skip-link:focus { top: 1rem; }
.prototype-banner { display: flex; justify-content: center; align-items: center; gap: .55rem; min-height: 34px; padding: .4rem 1rem; color: #fff; background: #7b3f00; font-size: .83rem; font-weight: 750; letter-spacing: .01em; text-align: center; }
.prototype-dot { width: .55rem; height: .55rem; border-radius: 999px; background: #ffd495; box-shadow: 0 0 0 4px rgba(255,255,255,.14); }
.site-header { background: var(--surface); border-bottom: 1px solid var(--line); }
.header-inner { width: min(1180px, calc(100% - 32px)); min-height: 78px; margin: auto; display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.brand { display: flex; align-items: center; gap: .8rem; }
.brand-mark { display: grid; place-items: center; width: 50px; height: 50px; border-radius: 13px; color: white; background: linear-gradient(145deg, var(--blue), #638fc5); font-size: .9rem; font-weight: 900; letter-spacing: .04em; }
.brand strong, .brand small { display: block; }
.brand strong { font-size: 1.05rem; }
.brand small { margin-top: .15rem; color: var(--muted); }
.privacy-chip { color: var(--green); background: var(--green-soft); border: 1px solid #b9e2d2; border-radius: 999px; padding: .45rem .75rem; font-size: .82rem; font-weight: 700; }
.back-to-vba { white-space: nowrap; }

main { width: min(1180px, calc(100% - 32px)); margin: 0 auto; padding: 28px 0 64px; }
main:focus { outline: none; }
.page-shell { display: grid; grid-template-columns: minmax(0, 1fr); gap: 22px; }
.wizard-head { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px; box-shadow: var(--shadow); }
.step-meta { display: flex; justify-content: space-between; gap: 1rem; color: var(--muted); font-size: .88rem; font-weight: 700; }
.progress-track { height: 8px; margin: .75rem 0 1rem; overflow: hidden; background: #e8edf2; border-radius: 999px; }
.progress-bar { height: 100%; background: linear-gradient(90deg, var(--blue), #63a0dc); border-radius: inherit; transition: width .25s ease; }
.step-list { display: grid; grid-template-columns: repeat(8, 1fr); gap: 6px; list-style: none; margin: 0; padding: 0; }
.step-list li { min-width: 0; }
.step-pill { width: 100%; min-height: 42px; padding: .45rem .3rem; border: 1px solid transparent; border-radius: 9px; color: var(--muted); background: transparent; font-size: .74rem; font-weight: 750; line-height: 1.15; cursor: default; }
.step-pill span { display: block; margin-bottom: .18rem; }
.step-pill.current { color: var(--blue-dark); border-color: #abc9e7; background: var(--blue-soft); }
.step-pill.done { color: var(--green); }

.panel { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: clamp(20px, 4vw, 42px); box-shadow: var(--shadow); }
.panel.narrow { max-width: 800px; margin-inline: auto; }
.wizard-step { scroll-margin-top: 14px; }
.wizard-step:focus { outline: none; }
.eyebrow { margin: 0 0 .6rem; color: var(--blue); font-size: .8rem; font-weight: 850; letter-spacing: .08em; text-transform: uppercase; }
h1, h2, h3 { color: var(--ink); line-height: 1.2; }
h1 { margin: 0 0 1rem; font-size: clamp(1.75rem, 4vw, 2.65rem); letter-spacing: -.035em; }
h2 { margin: 0 0 .7rem; font-size: clamp(1.45rem, 3vw, 2rem); letter-spacing: -.02em; }
h3 { margin: 1.5rem 0 .7rem; font-size: 1.12rem; }
p { line-height: 1.6; }
.lead { max-width: 760px; margin: 0 0 1.4rem; color: var(--muted); font-size: 1.06rem; }
.info-box, .warning-box, .success-box, .error-summary { border-radius: 12px; padding: 14px 16px; margin: 1rem 0; }
.info-box { color: #173f68; background: var(--blue-soft); border: 1px solid #c3daf0; }
.warning-box { color: #733800; background: var(--amber-soft); border: 1px solid #f1cf9e; }
.success-box { color: #10533f; background: var(--green-soft); border: 1px solid #b8dfd0; }
.error-summary { color: #741a12; background: var(--red-soft); border: 1px solid #efb8b2; }
.error-summary h3 { margin: 0 0 .4rem; color: inherit; }
.error-summary ul { margin: .25rem 0 0; padding-left: 1.2rem; }
.helper { margin: .35rem 0 0; color: var(--muted); font-size: .9rem; line-height: 1.45; }
.required-note { color: var(--muted); font-size: .86rem; }

.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.field { min-width: 0; }
.field.full { grid-column: 1 / -1; }
.field label, .field legend, .group-label { display: block; margin-bottom: .45rem; color: var(--ink); font-weight: 760; }
fieldset.field { margin: 0; padding: 0; border: 0; }
.field input[type="text"], .field input[type="email"], .field input[type="tel"], .field input[type="number"], .field textarea, .search-input, .select-input {
  width: 100%; min-height: 48px; padding: .72rem .8rem; color: var(--ink); background: white; border: 1px solid #adb9c7; border-radius: 9px; outline: 0;
}
.field textarea { min-height: 105px; resize: vertical; }
.field input:focus, .field textarea:focus, .search-input:focus, .select-input:focus { border-color: var(--blue); box-shadow: var(--focus); }
.field [aria-invalid="true"] { border-color: var(--red) !important; background: #fffafa !important; }
.field-error { margin: .38rem 0 0; color: var(--red); font-size: .88rem; font-weight: 700; }
.field-error, .error-summary, [aria-invalid="true"] { scroll-margin-block: 100px 140px; }
.input-unit { position: relative; }
.input-unit input { padding-right: 3rem !important; }
.input-unit span { position: absolute; right: .8rem; top: 50%; translate: 0 -50%; color: var(--muted); font-weight: 700; pointer-events: none; }

.choice-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 12px; }
.choice-card { position: relative; display: flex; align-items: flex-start; gap: .7rem; min-height: 66px; padding: 14px; border: 1px solid #b9c4d0; border-radius: 11px; background: white; cursor: pointer; }
.choice-card:hover { border-color: #78a6d2; }
.choice-card:has(input:focus-visible) { box-shadow: var(--focus); }
.choice-card:has(input:checked) { border: 2px solid var(--blue); padding: 13px; background: var(--blue-soft); }
.choice-card input { margin-top: .15rem; accent-color: var(--blue); }
.choice-card strong { display: block; }
.choice-card small { display: block; margin-top: .25rem; color: var(--muted); line-height: 1.35; }
.check-row { display: flex; align-items: flex-start; gap: .75rem; padding: 12px 0; }
.check-row input { width: 20px; height: 20px; flex: 0 0 auto; margin-top: .1rem; accent-color: var(--blue); }
.check-row label { line-height: 1.45; }

.button-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: 28px; padding-top: 20px; border-top: 1px solid var(--line); }
.button-group { display: flex; flex-wrap: wrap; gap: 10px; }
.btn { min-height: 46px; padding: .72rem 1.1rem; border: 1px solid transparent; border-radius: 9px; font-weight: 790; text-decoration: none; display: inline-flex; align-items: center; justify-content: center; gap: .45rem; }
.btn-primary { color: #fff; background: var(--blue); }
.btn-primary:hover { background: var(--blue-dark); }
.btn-secondary { color: var(--blue-dark); background: #fff; border-color: #94b7d9; }
.btn-quiet { color: var(--ink); background: #f1f4f7; border-color: #d8e0e8; }
.btn-danger { color: #fff; background: var(--red); }
.btn:focus-visible, .tab:focus-visible, .model-card:focus-visible, .schema-card:focus-visible { outline: 0; box-shadow: var(--focus); }
.btn:disabled { opacity: .55; cursor: not-allowed; }

.tabs { display: flex; flex-wrap: wrap; gap: 8px; margin: 1rem 0; }
.tab { min-height: 42px; padding: .55rem .8rem; border: 1px solid #b8c5d2; border-radius: 999px; color: var(--ink); background: white; font-weight: 720; }
.tab.active { color: white; background: var(--blue); border-color: var(--blue); }
.model-toolbar { display: grid; grid-template-columns: minmax(220px, 1fr) auto; gap: 12px; align-items: end; margin-bottom: 1rem; }
.model-toolbar.single { grid-template-columns: minmax(220px, 360px); }
.model-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
.model-card { position: relative; min-width: 0; padding: 10px; text-align: left; border: 1px solid #c4ced8; border-radius: 12px; background: white; }
.model-card:hover { border-color: #72a1cf; transform: translateY(-1px); }
.model-card.selected { border: 3px solid var(--blue); padding: 8px; background: var(--blue-soft); }
.model-card img { display: block; width: 100%; aspect-ratio: 4 / 3; object-fit: contain; background: #f9fafb; border-radius: 8px; }
.model-card strong { display: block; margin-top: .7rem; overflow-wrap: anywhere; }
.badge { display: inline-block; margin-top: .35rem; padding: .2rem .45rem; color: #16533f; background: #dff3e9; border-radius: 999px; font-size: .72rem; font-weight: 800; }
.selected-label { color: var(--blue-dark); font-size: .78rem; font-weight: 800; }
.selection-summary { display: flex; flex-wrap: wrap; gap: 10px; margin: 1rem 0; }
.selection-summary { min-height: 1px; scroll-margin-top: 14px; }
.selection-summary:focus { outline: none; }
.selection-chip { display: flex; align-items: center; gap: .65rem; padding: .55rem .7rem; border: 1px solid #c4d6e8; border-radius: 10px; background: var(--blue-soft); }
.selection-chip img { width: 48px; height: 42px; object-fit: contain; background: white; border-radius: 6px; }
.selection-chip span, .selection-chip small, .selection-chip strong { display: block; }
.selection-chip small { margin-bottom: .15rem; color: var(--muted); }

.photo-toolbar { display: flex; flex-wrap: wrap; gap: 10px; margin: 1rem 0; }
.photo-toolbar input { position: absolute; opacity: 0; pointer-events: none; }
.photo-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.photo-card { border: 1px solid var(--line); border-radius: 12px; overflow: hidden; background: #fafbfd; }
.photo-card img { display: block; width: 100%; aspect-ratio: 4 / 3; object-fit: cover; background: #e9eef3; }
.photo-body { padding: 12px; }
.photo-meta { display: flex; justify-content: space-between; gap: .5rem; margin-bottom: .6rem; color: var(--muted); font-size: .8rem; }
.photo-actions { display: flex; gap: 8px; margin-top: .6rem; }
.photo-actions .btn { min-height: 38px; padding: .45rem .65rem; font-size: .82rem; }
.processing { display: inline-flex; align-items: center; gap: .45rem; color: var(--blue-dark); font-weight: 700; }
.spinner { width: 16px; height: 16px; border: 2px solid #bad1e7; border-top-color: var(--blue); border-radius: 50%; animation: spin .8s linear infinite; }
@keyframes spin { to { rotate: 360deg; } }

.measure-help { display: grid; grid-template-columns: minmax(220px, .9fr) minmax(260px, 1.1fr); gap: 18px; margin: 1rem 0; padding: 18px; border-radius: 12px; background: #f7f9fb; border: 1px solid var(--line); }
.measure-sketch { display: grid; grid-template-columns: 32px minmax(170px, 300px); grid-template-rows: 1fr auto; align-items: stretch; justify-content: center; gap: 8px; min-height: 170px; }
.opening-box { display: grid; place-items: center; min-height: 135px; border: 3px solid #6f7d8b; background: white; color: var(--muted); font-weight: 700; }
.height-arrow { grid-row: 1; display: grid; place-items: center; writing-mode: vertical-rl; color: var(--blue-dark); font-weight: 800; }
.width-arrow { grid-column: 2; text-align: center; color: var(--blue-dark); font-weight: 800; }

.position-list { display: grid; gap: 12px; margin: 1rem 0; }
.position-card { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 12px; padding: 16px; border: 1px solid var(--line); border-radius: 12px; background: #fbfcfd; }
.position-title { display: flex; flex-wrap: wrap; align-items: baseline; gap: .5rem; margin: 0 0 .4rem; }
.position-facts { display: flex; flex-wrap: wrap; gap: .4rem .9rem; color: var(--muted); font-size: .9rem; }
.position-actions { display: flex; align-items: center; gap: 8px; }
.position-editor { margin-top: 1rem; padding: 20px; border: 2px solid #bed4e9; border-radius: 14px; background: #fbfdff; }
.schema-view-note { margin-bottom: 12px; }
.schema-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
.schema-card { display: flex; flex-direction: column; align-items: stretch; padding: 10px; border: 1px solid #bcc7d2; border-radius: 11px; background: white; text-align: center; }
.schema-card.selected { border: 3px solid var(--blue); padding: 7px; background: var(--blue-soft); }
.schema-image { display: grid; place-items: center; height: 142px; padding: 8px; background: white; }
.schema-card img { display: block; width: 100%; height: 100%; object-fit: contain; background: white; }
.schema-card strong { display: block; margin-top: 8px; font-size: 1.12rem; }

.summary-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.summary-card { padding: 18px; border: 1px solid var(--line); border-radius: 12px; background: #fbfcfd; }
.summary-card.full { grid-column: 1 / -1; }
.summary-card-head { display: flex; justify-content: space-between; gap: 1rem; align-items: start; }
.summary-card h3 { margin: 0 0 .7rem; }
.summary-card dl { display: grid; grid-template-columns: minmax(110px, .7fr) minmax(0, 1.3fr); gap: .45rem 1rem; margin: 0; }
.summary-card dt { color: var(--muted); }
.summary-card dd { margin: 0; font-weight: 680; overflow-wrap: anywhere; }
.summary-images { display: flex; flex-wrap: wrap; gap: 9px; margin-top: .8rem; }
.summary-photo { width: 92px; }
.summary-photo img { width: 92px; height: 68px; object-fit: cover; border-radius: 7px; }
.summary-photo small { display: block; margin-top: .25rem; color: var(--muted); }
.summary-position { padding: 10px 0; border-top: 1px solid var(--line); }
.summary-position:first-of-type { border-top: 0; }
.test-panel { margin: 1.2rem 0; border: 1px dashed #c48a42; border-radius: 12px; background: #fffaf3; }
.test-panel summary { padding: 12px 14px; cursor: pointer; font-weight: 800; color: #773d00; }
.test-panel > div { padding: 0 14px 14px; }

.start-features { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; margin: 1.6rem 0; }
.feature { padding: 16px; border-radius: 12px; background: #f7f9fb; border: 1px solid var(--line); }
.feature strong { display: block; margin-bottom: .35rem; }
.feature p { margin: 0; color: var(--muted); font-size: .9rem; }
.success-icon { display: grid; place-items: center; width: 68px; height: 68px; margin-bottom: 1rem; border-radius: 50%; color: white; background: var(--green); font-size: 2rem; }
.test-number { display: inline-block; margin: .5rem 0 1.2rem; padding: .7rem 1rem; border: 2px dashed #c57a23; border-radius: 9px; color: #733800; background: var(--amber-soft); font-weight: 850; }
.empty-state { padding: 20px; text-align: center; color: var(--muted); border: 1px dashed #b7c2ce; border-radius: 12px; }
.visually-hidden { position: absolute !important; width: 1px !important; height: 1px !important; padding: 0 !important; margin: -1px !important; overflow: hidden !important; clip: rect(0,0,0,0) !important; white-space: nowrap !important; border: 0 !important; }

@media (max-width: 920px) {
  .step-list { grid-template-columns: repeat(4, 1fr); }
  .model-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .photo-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .schema-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 680px) {
  .header-inner, main { width: min(100% - 20px, 1180px); }
  .header-inner { min-height: 68px; }
  .privacy-chip { display: none; }
  .back-to-vba { min-height: 42px; padding: .55rem .75rem; font-size: .84rem; }
  main { padding-top: 14px; }
  .wizard-head { padding: 14px; }
  .step-list { display: none; }
  .panel { padding: 20px 16px; }
  .form-grid, .summary-grid, .measure-help { grid-template-columns: 1fr; }
  .model-toolbar { grid-template-columns: 1fr; }
  .model-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .photo-grid, .start-features { grid-template-columns: 1fr; }
  .schema-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .schema-image { height: 138px; }
  .position-card { grid-template-columns: 1fr; }
  .position-actions { justify-content: flex-start; }
  .summary-card.full { grid-column: auto; }
  .button-row { align-items: stretch; flex-direction: column-reverse; }
  .button-group, .button-row > .btn { width: 100%; }
  .button-group .btn { flex: 1 1 140px; }
  .btn-primary { min-height: 50px; }
}

@media (max-width: 410px) {
  .model-grid { grid-template-columns: 1fr; }
  .choice-grid { grid-template-columns: 1fr; }
  .prototype-banner { font-size: .76rem; }
  .brand-mark { width: 44px; height: 44px; }
}

@media (max-width: 480px) {
  .schema-grid { grid-template-columns: 1fr; }
  .schema-image { height: 180px; }
}

@media (max-width: 1100px), (hover: none) and (pointer: coarse) {
  .has-fixed-actions main { padding-bottom: calc(128px + env(safe-area-inset-bottom, 0px)); }
  .wizard-navigation,
  .position-editor-actions {
    position: fixed;
    z-index: 80;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    flex-direction: row;
    align-items: stretch;
    gap: 10px;
    width: 100%;
    margin: 0;
    padding: 12px max(16px, calc((100vw - 1068px) / 2)) calc(12px + env(safe-area-inset-bottom, 0px));
    border: 0;
    border-top: 1px solid var(--line);
    background: rgba(255, 255, 255, .98);
    box-shadow: 0 -8px 26px rgba(20, 34, 59, .15);
  }
  .wizard-navigation { justify-content: space-between; }
  .wizard-navigation > div { display: flex; }
  .wizard-navigation .btn,
  .position-editor-actions .btn { min-height: 52px; }
  .position-editor-actions { justify-content: stretch; flex-wrap: nowrap; }
  .position-editor-actions .btn { flex: 1 1 50%; }
  .wizard-navigation.mobile-suppressed { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; transition-duration: .01ms !important; }
}