@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;600;700&family=Playfair+Display:wght@400;500;600&display=swap');

:root {
  --select-ink: #1a1917;
  --select-muted: #706d67;
  --select-soft: #a19b92;
  --select-line: rgba(26, 25, 23, .15);
  --select-paper: #f5f1ea;
  --select-card: #fffdf9;
  --select-bronze: #80654f;
  --select-copper: #b4774a;
  --select-salt: #9ca29a;
  --select-dark: #22211f;
  --select-shadow: 0 22px 48px rgba(40, 31, 23, .12);
  --select-sans: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'PingFang SC', sans-serif;
  --select-serif: 'Playfair Display', 'Songti SC', SimSun, Georgia, serif;
  --select-header: 72px;
}

* { box-sizing: border-box; }
html { min-width: 320px; scroll-behavior: smooth; background: var(--select-paper); }
body { min-width: 320px; margin: 0; color: var(--select-ink); background: var(--select-paper); font-family: var(--select-sans); font-weight: 400; }
body::before { position: fixed; z-index: -1; inset: 0; opacity: .36; background: radial-gradient(circle at 8% 12%, rgba(180, 119, 74, .12), transparent 31%), radial-gradient(circle at 94% 46%, rgba(156, 162, 154, .16), transparent 30%); content: ''; pointer-events: none; }
button, input { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button { cursor: pointer; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

.selection-app { min-height: 100vh; }
.selection-header { position: sticky; z-index: 10; top: 0; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; min-height: var(--select-header); padding: 0 42px; border-bottom: 1px solid rgba(26, 25, 23, .11); background: rgba(245, 241, 234, .88); backdrop-filter: blur(18px); }
.selection-header-start { display: flex; align-items: center; gap: 18px; }
.selection-back { display: grid; place-items: center; width: 32px; height: 32px; border: 1px solid var(--select-line); border-radius: 50%; color: var(--select-muted); font-size: 17px; transition: color .25s, border-color .25s, transform .25s, background .25s; }
.selection-back:hover { color: var(--select-ink); border-color: var(--select-ink); background: var(--select-card); transform: translateX(-3px); }
.selection-wordmark { line-height: 1; }
.selection-wordmark b { display: block; font-family: var(--select-serif); font-size: 19px; font-weight: 500; letter-spacing: .18em; }
.selection-wordmark small { display: block; margin-top: 6px; color: var(--select-soft); font-size: 7px; letter-spacing: .25em; }
.selection-header-title { color: var(--select-muted); font-size: 11px; letter-spacing: .16em; }
.selection-header-exit { justify-self: end; color: var(--select-muted); font-size: 11px; transition: color .2s; }
.selection-header-exit:hover { color: var(--select-copper); }

.selection-layout { display: grid; grid-template-columns: minmax(0, 1fr) 342px; gap: 50px; max-width: 1480px; min-height: calc(100vh - var(--select-header)); margin: 0 auto; padding: 0 42px 60px; }
.selection-main { min-width: 0; padding-top: 38px; }
.selection-progress { display: flex; align-items: flex-start; max-width: 980px; margin-bottom: 54px; }
.progress-step { position: relative; display: flex; flex: 1 1 0; flex-direction: column; align-items: flex-start; gap: 9px; min-width: 0; padding: 0 18px 0 0; border: 0; border-top: 1px solid var(--select-line); color: var(--select-soft); text-align: left; background: transparent; }
.progress-step::after { position: absolute; top: -2px; left: 0; width: 0; height: 3px; background: var(--select-ink); content: ''; transition: width .45s cubic-bezier(.22, .61, .36, 1), background .25s; }
.progress-step.is-current { color: var(--select-ink); }
.progress-step.is-current::after { width: 100%; }
.progress-step.is-complete { color: var(--select-muted); }
.progress-step.is-complete::after { width: 100%; background: var(--select-copper); }
.progress-number { padding-top: 12px; font-family: var(--select-serif); font-size: 17px; }
.progress-label { max-width: 100%; overflow: hidden; font-size: 10px; letter-spacing: .06em; text-overflow: ellipsis; white-space: nowrap; }

.selection-view { min-height: 620px; }
.selection-view.is-rendered .reveal-item { animation: selection-reveal .72s cubic-bezier(.22, .61, .36, 1) both; animation-delay: var(--card-delay, 0ms); }
@keyframes selection-reveal { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: translateY(0); } }
.selection-masthead { display: grid; grid-template-columns: minmax(0, 1fr) minmax(250px, .72fr); gap: clamp(30px, 5vw, 78px); align-items: stretch; margin-bottom: 38px; }
.selection-masthead.is-no-visual { display: block; max-width: 930px; }
.selection-masthead.is-no-visual .selection-mastcopy { max-width: 780px; }
.selection-mastcopy { min-width: 0; padding-top: 5px; }
.selection-eyebrow { margin: 0 0 16px; color: var(--select-bronze); font-size: 10px; letter-spacing: .22em; text-transform: uppercase; }
.selection-heading { max-width: 680px; margin: 0; font-family: var(--select-serif); font-size: clamp(44px, 5.2vw, 78px); font-weight: 400; letter-spacing: -.06em; line-height: .98; }
.selection-heading span { display: block; max-width: 560px; margin-top: 17px; color: var(--select-muted); font-family: var(--select-sans); font-size: 13px; font-weight: 400; letter-spacing: .02em; line-height: 1.8; }
.selection-description { max-width: 530px; margin: 25px 0 0; color: var(--select-muted); font-size: 13px; line-height: 1.9; }
.selection-palette { display: flex; align-items: center; gap: 6px; margin-top: 28px; }
.palette-swatch { width: 18px; height: 18px; border: 1px solid rgba(26, 25, 23, .18); border-radius: 50%; background: var(--swatch); }
.selection-palette small { margin-left: 8px; color: var(--select-soft); font-size: 9px; letter-spacing: .12em; }
.selection-mast-visual { position: relative; min-height: 280px; margin: 0; overflow: hidden; background: #d8d1c7; box-shadow: var(--select-shadow); }
.selection-mast-visual::after { position: absolute; inset: 0; background: linear-gradient(180deg, rgba(18, 17, 15, .02), rgba(18, 17, 15, .46)); content: ''; pointer-events: none; }
.selection-mast-visual img { width: 100%; height: 100%; min-height: 280px; object-fit: cover; transition: transform 1.1s cubic-bezier(.22, .61, .36, 1); }
.selection-mast-visual:hover img { transform: scale(1.045); }
.selection-mast-visual > span { position: absolute; z-index: 1; top: 16px; right: 16px; padding: 6px 8px; color: #fff; background: rgba(26, 25, 23, .72); font-size: 8px; letter-spacing: .14em; }
.selection-mast-visual figcaption { position: absolute; z-index: 1; right: 16px; bottom: 16px; left: 16px; color: rgba(255, 255, 255, .84); font-size: 10px; letter-spacing: .04em; }

.material-rail { display: flex; align-items: center; flex-wrap: wrap; gap: 13px; margin-top: 34px; padding-top: 14px; border-top: 1px solid var(--select-line); color: var(--select-muted); font-size: 10px; }
.material-rail-label { color: var(--select-ink); letter-spacing: .12em; }
.material-rail-rule { width: 32px; height: 1px; background: var(--select-copper); }
.material-rail small { color: var(--select-soft); font-size: 9px; }

.option-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.option-grid.is-two { grid-template-columns: repeat(2, minmax(0, 1fr)); max-width: 930px; }
.option-grid.is-four { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.option-grid-types { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.option-card { position: relative; display: flex; min-height: 148px; flex-direction: column; justify-content: space-between; padding: 22px 20px 18px; border: 1px solid var(--select-line); color: var(--select-ink); text-align: left; background: var(--select-card); transition: border-color .3s, transform .3s, box-shadow .3s, background .3s; }
.option-card:hover { border-color: var(--select-bronze); transform: translateY(-5px); box-shadow: var(--select-shadow); }
.option-card.is-selected { border-color: var(--select-ink); box-shadow: inset 0 0 0 1px var(--select-ink), 0 18px 32px rgba(35, 31, 27, .1); }
.option-card.is-selected::before { position: absolute; z-index: 3; top: 13px; right: 14px; width: 7px; height: 7px; border-radius: 50%; background: var(--select-copper); content: ''; }
.option-index { color: var(--select-soft); font-family: var(--select-serif); font-size: 14px; }
.option-title { margin: 12px 0 0; font-size: 20px; font-weight: 500; letter-spacing: .01em; }
.option-subtitle { margin: 8px 0 0; color: var(--select-muted); font-size: 11px; line-height: 1.6; }
.option-meta { margin-top: 15px; color: var(--select-soft); font-size: 10px; line-height: 1.6; }
.option-arrow { align-self: flex-end; color: var(--select-soft); font-size: 18px; line-height: 1; transition: color .2s, transform .3s; }
.option-card:hover .option-arrow, .option-card.is-selected .option-arrow { color: inherit; transform: translateX(4px); }

.visual-option-card { min-height: 294px; overflow: hidden; padding: 0; border-color: rgba(26, 25, 23, .22); color: #fff; background: var(--select-dark); isolation: isolate; }
.visual-option-card::before { z-index: 2; border-radius: 50%; }
.visual-option-card:hover { border-color: var(--select-copper); }
.option-card-media, .option-card-shade { position: absolute; inset: 0; }
.option-card-media { z-index: 0; overflow: hidden; background: #d2c9bd; }
.option-card-media img { width: 100%; height: 100%; object-fit: cover; filter: saturate(.86) contrast(.97); transition: transform 1s cubic-bezier(.22, .61, .36, 1), filter .6s; }
.visual-option-card:hover .option-card-media img { filter: saturate(1.02) contrast(1.02); transform: scale(1.08); }
.option-card-shade { z-index: 1; background: linear-gradient(180deg, rgba(21, 20, 18, .05) 18%, rgba(21, 20, 18, .1) 38%, rgba(21, 20, 18, .9) 100%); }
.option-card-body { position: relative; z-index: 2; display: flex; min-height: 294px; flex-direction: column; align-items: flex-start; justify-content: flex-end; padding: 22px 20px 18px; }
.visual-option-card .option-index { color: rgba(255, 255, 255, .68); }
.visual-option-card .option-title { margin-top: 9px; font-size: 22px; }
.visual-option-card .option-subtitle { color: rgba(255, 255, 255, .84); }
.visual-option-card .option-meta { max-width: 220px; color: rgba(255, 255, 255, .64); }
.visual-option-card .option-arrow { color: rgba(255, 255, 255, .72); }
.option-card-badge { position: absolute; z-index: 3; top: 15px; left: 15px; padding: 5px 7px; color: #fff; background: rgba(26, 25, 23, .64); font-size: 8px; letter-spacing: .11em; }
.style-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.style-grid .visual-option-card { min-height: 230px; }
.style-grid .option-card-body { min-height: 230px; }

.product-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 18px; margin: 30px 0 20px; }
.product-search { width: min(320px, 100%); min-height: 42px; padding: 0 14px; border: 1px solid var(--select-line); outline: none; color: var(--select-ink); background: rgba(255, 253, 249, .82); font-size: 12px; transition: border-color .25s, box-shadow .25s, background .25s; }
.product-search:focus { border-color: var(--select-bronze); background: #fff; box-shadow: 0 0 0 4px rgba(128, 101, 79, .11); }
.product-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; padding-bottom: 20px; }
.product-card-select { position: relative; display: flex; min-width: 0; flex-direction: column; overflow: hidden; padding: 0; border: 1px solid var(--select-line); color: var(--select-ink); text-align: left; background: var(--select-card); transition: border-color .3s, transform .3s, box-shadow .3s; }
.product-card-select:hover { border-color: var(--select-bronze); transform: translateY(-5px); box-shadow: var(--select-shadow); }
.product-card-select.is-selected { border-color: var(--select-ink); box-shadow: inset 0 0 0 1px var(--select-ink), 0 17px 30px rgba(35, 31, 27, .1); }
.product-card-media { position: relative; aspect-ratio: 1.15; overflow: hidden; background: #d9d1c7; }
.product-card-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .9s cubic-bezier(.22, .61, .36, 1), filter .5s; }
.product-card-select:hover .product-card-media img { filter: saturate(1.04); transform: scale(1.06); }
.product-card-no-image { display: grid; place-items: center; align-content: center; height: 100%; min-height: 180px; color: var(--select-muted); background: linear-gradient(145deg, #e8e1d8, #cec5b9); text-align: center; }
.product-card-no-image img { position: absolute; inset: 0; opacity: .72; object-fit: cover; }
.product-card-no-image strong, .product-card-no-image small { position: relative; z-index: 1; text-shadow: 0 1px 12px rgba(255, 253, 249, .95); }
.product-card-no-image strong { font-family: var(--select-serif); font-size: 25px; font-weight: 400; }
.product-card-no-image small { margin-top: 8px; color: var(--select-soft); font-size: 9px; letter-spacing: .08em; }
.product-card-badge { position: absolute; top: 11px; left: 11px; padding: 5px 7px; color: #fff; background: rgba(26, 25, 23, .78); font-size: 9px; letter-spacing: .08em; }
.product-card-badge.is-muted { color: var(--select-muted); background: rgba(255, 253, 249, .9); }
.product-card-focus { position: absolute; right: 12px; bottom: 12px; padding: 7px 8px; color: #fff; background: rgba(26, 25, 23, .64); font-size: 9px; opacity: 0; transform: translateY(5px); transition: opacity .25s, transform .25s; }
.product-card-select:hover .product-card-focus { opacity: 1; transform: translateY(0); }
.product-card-content { display: flex; flex: 1; flex-direction: column; padding: 15px 16px 16px; }
.product-card-content small { color: var(--select-soft); font-size: 9px; letter-spacing: .09em; }
.product-card-content h3 { margin: 8px 0 6px; font-size: 17px; font-weight: 500; }
.product-card-content p { min-height: 34px; margin: 0; color: var(--select-muted); font-size: 10px; line-height: 1.7; }
.product-card-more { display: flex; align-items: center; justify-content: space-between; margin-top: 14px; color: var(--select-muted); font-size: 10px; }
.product-card-more b { color: var(--select-ink); font-weight: 500; }

.spec-feature { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(250px, .75fr); min-height: 252px; margin: 30px 0 38px; overflow: hidden; color: #fff; background: var(--select-dark); }
.spec-feature-media { min-height: 252px; overflow: hidden; }
.spec-feature-media img { width: 100%; height: 100%; object-fit: cover; transition: transform 1s; }
.spec-feature:hover .spec-feature-media img { transform: scale(1.045); }
.spec-feature-no-image { position: relative; display: grid; place-items: center; align-content: center; height: 100%; min-height: 252px; color: rgba(255, 255, 255, .78); background: radial-gradient(circle at 30% 20%, rgba(180, 119, 74, .26), transparent 42%), #2b2926; text-align: center; }
.spec-feature-no-image img { position: absolute; inset: 0; width: 100%; height: 100%; opacity: .45; object-fit: cover; }
.spec-feature-no-image strong, .spec-feature-no-image small { position: relative; z-index: 1; }
.spec-feature-no-image strong { font-family: var(--select-serif); font-size: 38px; font-weight: 400; }
.spec-feature-no-image small { margin-top: 10px; color: rgba(255, 255, 255, .48); font-size: 9px; letter-spacing: .12em; }
.spec-feature-copy { display: flex; flex-direction: column; justify-content: center; padding: 30px; }
.spec-feature-copy > span { color: rgba(255, 255, 255, .56); font-size: 9px; letter-spacing: .13em; }
.spec-feature-copy strong { margin-top: 12px; font-family: var(--select-serif); font-size: clamp(30px, 3.4vw, 48px); font-weight: 400; }
.spec-feature-copy p { margin: 16px 0 0; color: rgba(255, 255, 255, .7); font-size: 11px; line-height: 1.8; }
.spec-feature-meta { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 22px; }
.spec-feature-meta span { padding: 5px 7px; border: 1px solid rgba(255, 255, 255, .22); color: rgba(255, 255, 255, .72); font-size: 9px; }
.spec-layout { display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(280px, .92fr); gap: 18px; }
.spec-column { border-top: 1px solid var(--select-ink); }
.spec-column-head { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; padding: 16px 0 13px; border-bottom: 1px solid var(--select-line); }
.spec-column-head h3 { margin: 0; font-size: 16px; font-weight: 500; }
.spec-column-head small { color: var(--select-muted); font-size: 10px; }
.parameter-list { border-top: 1px solid var(--select-line); }
.parameter-row { display: grid; grid-template-columns: 112px 1fr; gap: 18px; padding: 12px 0; border-bottom: 1px solid var(--select-line); font-size: 10px; line-height: 1.7; }
.parameter-row span:first-child { color: var(--select-muted); }
.parameter-row span:last-child { color: var(--select-ink); word-break: break-word; }
.spec-note { margin: 17px 0 0; color: var(--select-muted); font-size: 11px; line-height: 1.8; }

.selection-content-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; margin-bottom: 12px; }
.selection-content-head .selection-heading { font-size: clamp(38px, 4.3vw, 66px); }
.selection-count { flex: 0 0 auto; color: var(--select-soft); font-size: 11px; }
.selection-actions { display: flex; align-items: center; gap: 14px; margin-top: 48px; padding-top: 25px; border-top: 1px solid var(--select-line); }
.selection-button { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 0 20px; border: 1px solid var(--select-ink); color: #fff; background: var(--select-ink); font-size: 11px; letter-spacing: .08em; transition: color .25s, background .25s, transform .25s; }
.selection-button:hover { color: var(--select-ink); background: var(--select-card); transform: translateY(-2px); }
.selection-button.is-disabled { cursor: not-allowed; opacity: .45; pointer-events: none; }

.selection-summary { position: sticky; top: calc(var(--select-header) + 38px); align-self: start; min-height: 560px; margin-top: 38px; padding: 28px 24px 24px; border: 1px solid var(--select-line); background: rgba(255, 253, 249, .84); box-shadow: 0 16px 34px rgba(40, 31, 23, .045); backdrop-filter: blur(14px); }
.summary-kicker { margin: 0 0 32px; color: var(--select-bronze); font-size: 9px; letter-spacing: .2em; text-transform: uppercase; }
.summary-title { margin: 0; font-family: var(--select-serif); font-size: 35px; font-weight: 400; letter-spacing: -.04em; }
.summary-title span { display: block; margin-top: 8px; color: var(--select-muted); font-family: var(--select-sans); font-size: 11px; letter-spacing: .04em; }
.summary-rule { height: 1px; margin: 28px 0 20px; background: var(--select-line); }
.summary-list { display: grid; gap: 0; margin: 0; }
.summary-row { display: grid; grid-template-columns: 75px 1fr; gap: 12px; padding: 12px 0; border-bottom: 1px solid rgba(26, 25, 23, .09); }
.summary-row dt { color: var(--select-muted); font-size: 10px; }
.summary-row dd { margin: 0; color: var(--select-ink); font-size: 11px; font-weight: 500; line-height: 1.55; }
.summary-row dd.is-empty { color: var(--select-soft); font-weight: 400; }
.summary-product { display: flex; align-items: center; gap: 12px; margin-top: 24px; padding: 11px; border: 1px solid var(--select-line); background: rgba(250, 247, 242, .76); }
.summary-product-thumb { flex: 0 0 52px; width: 52px; height: 63px; overflow: hidden; background: #ded9d3; }
.summary-product-thumb img { width: 100%; height: 100%; object-fit: cover; }
.summary-product-no-image { display: grid; place-items: center; width: 100%; height: 100%; color: var(--select-muted); font-family: var(--select-serif); font-size: 12px; text-align: center; }
.summary-product b { display: block; font-size: 12px; font-weight: 500; }
.summary-product small { display: block; margin-top: 4px; color: var(--select-muted); font-size: 9px; line-height: 1.5; }
.summary-product.is-preview { border-style: dashed; }
.summary-selection-hint { margin-top: 24px; padding: 15px 12px; border: 1px dashed var(--select-line); color: var(--select-muted); font-size: 10px; line-height: 1.7; }
.summary-continue { width: 100%; margin-top: 24px; }
.summary-footnote { margin: 17px 0 0; color: var(--select-soft); font-size: 9px; line-height: 1.7; }
.summary-status { display: inline-flex; align-items: center; gap: 6px; margin-top: 24px; color: var(--select-muted); font-size: 9px; }
.summary-status::before { width: 6px; height: 6px; border-radius: 50%; background: var(--select-copper); content: ''; }
.empty-state { padding: 58px 22px; border: 1px dashed var(--select-line); color: var(--select-muted); text-align: center; font-size: 12px; line-height: 1.8; }

@media (max-width: 1180px) {
  .selection-layout { grid-template-columns: minmax(0, 1fr) 300px; gap: 28px; padding-right: 26px; padding-left: 26px; }
  .selection-header { padding-right: 26px; padding-left: 26px; }
  .option-grid-types { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .product-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .option-grid.is-four { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 820px) {
  .selection-header { grid-template-columns: 1fr auto; min-height: 64px; }
  .selection-header-title { display: none; }
  .selection-layout { display: block; padding: 0 18px 34px; }
  .selection-main { padding-top: 26px; }
  .selection-progress { margin-bottom: 42px; overflow-x: auto; padding-bottom: 5px; }
  .progress-step { flex: 0 0 106px; }
  .selection-summary { position: static; min-height: 0; margin: 32px 0 0; }
  .selection-view { min-height: 0; }
  .selection-masthead { grid-template-columns: 1fr; gap: 26px; }
  .selection-mast-visual { min-height: 260px; }
  .selection-mast-visual img { min-height: 260px; }
  .option-grid, .style-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .option-grid-types { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .spec-layout, .spec-feature { grid-template-columns: 1fr; }
  .spec-feature-copy { min-height: 230px; }
}
@media (max-width: 520px) {
  .selection-header { padding: 0 14px; }
  .selection-header-start { gap: 11px; }
  .selection-wordmark b { font-size: 16px; }
  .selection-wordmark small { font-size: 6px; letter-spacing: .14em; }
  .selection-header-exit { font-size: 10px; }
  .selection-heading { font-size: 44px; }
  .selection-content-head { display: block; }
  .selection-count { display: block; margin-top: 12px; }
  .option-grid, .option-grid.is-two, .option-grid.is-four, .option-grid-types, .style-grid, .product-grid { grid-template-columns: 1fr; }
  .product-toolbar { display: block; }
  .product-search { width: 100%; margin-top: 16px; }
  .visual-option-card, .option-card-body { min-height: 270px; }
  .spec-feature-copy { padding: 24px; }
  .parameter-row { grid-template-columns: 88px 1fr; gap: 10px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; scroll-behavior: auto !important; transition-duration: .01ms !important; }
  .selection-view .reveal-item { opacity: 1; transform: none; }
}