:root {
      --bg: var(--color-background-primary);
      --bg2: var(--color-background-secondary);
      --bg3: #ebebeb;
      --text: var(--color-text-primary);
      --text2: var(--color-text-muted);
      --text3: var(--color-text-faint);
      --border: var(--color-border-warm);
      --border2: var(--color-border-warm-md);
    }

    /* shared.css already provides the * reset and body base */
    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: var(--font-sans);
      color: var(--text);
      min-height: 100vh;
    }

    /* ─── PAGE ─── */
    .page {
      max-width: var(--content-max-width);
      margin: 0 auto;
      padding: 0 40px 80px;
    }

    /* ─── FILTER ─── */
    .filter-wrap {
      position: sticky;
      top: var(--header-height);
      z-index: 10;
      background: var(--bg);
      transition: top 0.35s ease;
    }

    .filter-bar {
      padding: 20px 0;
      display: flex;
      align-items: center;
      gap: 8px;
      border-bottom: 0.5px solid var(--border);
    }

    .filter-label {
      font-size: calc(10px * var(--font-scale));
      letter-spacing: 0.18em;
      color: var(--text3);
      margin-right: 6px;
      white-space: nowrap;
    }

    .fp {
      font-size: calc(11px * var(--font-scale));
      letter-spacing: 0.08em;
      padding: 6px 16px;
      border: 0.5px solid var(--border);
      cursor: pointer;
      background: transparent;
      color: var(--text2);
      transition: all 0.15s;
      font-family: var(--font-sans);
    }

    .fp:hover {
      border-color: var(--text);
      color: var(--text);
      background: var(--bg2);
    }

    .fp.on:hover {
      background: #4a4540;
    }

    .fp.on {
      background: var(--text);
      color: var(--bg);
      border-color: var(--text);
    }

    /* ─── GRID ─── */
    .grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      border-top: 0.5px solid var(--border);
      border-left: 0.5px solid var(--border);
      margin-top: 24px;
      /* same rounded-container frame as the home page cards */
      border-radius: var(--border-radius-lg);
      overflow: hidden;
    }

    .card {
      border-right: 0.5px solid var(--border);
      border-bottom: 0.5px solid var(--border);
      cursor: pointer;
      transition: background 0.18s;
      display: flex;
      flex-direction: column;
    }

    .card:hover {
      background: var(--bg2);
    }

    .card.active {
      background: var(--bg2);
      outline: 1.5px solid var(--text);
      outline-offset: -1px;
      z-index: 1;
    }

    .card-img {
      width: 100%;
      height: 200px;
      background: var(--color-background-primary);
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
      padding: 0;
      position: relative;
      overflow: hidden;
    }

    .card-img svg {
      opacity: 0.28;
      width: 60px;
      height: 60px;
      padding: 16px;
      box-sizing: border-box;
    }

    .card-img img {
      width: 100%;
      height: 100%;
      object-fit: contain;
    }

    .card-img:not(.loaded)::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(90deg,
          transparent 0%,
          rgba(255, 255, 255, 0.45) 50%,
          transparent 100%);
      animation: struct-shimmer 1.4s ease-in-out infinite;
      pointer-events: none;
      z-index: 1;
    }

    .card-img-hover {
      position: absolute;
      inset: 0;
      width: 100%;
      height: 100%;
      object-fit: contain;
      opacity: 0;
      transition: opacity 0.38s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    }

    .card-img-primary {
      opacity: 0;
      transition: opacity 0.38s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    }

    .card-img.loaded .card-img-primary {
      opacity: 1;
    }

    .card:hover .card-img-hover {
      opacity: 1;
    }

    .card:hover .card-img-primary {
      opacity: 0;
    }

    .card-body {
      padding: 16px 18px 18px;
      flex: 1;
      display: flex;
      flex-direction: column;
      gap: 5px;
    }

    .card-en {
      font-family: var(--font-serif);
      font-size: calc(8px * var(--font-scale));
      letter-spacing: 0.05em;
      color: var(--text2);
      font-style: italic;
    }

    .card-zh {
      font-size: calc(15px * var(--font-scale));
      font-weight: 400;
      letter-spacing: 0.05em;
      word-break: keep-all;
    }

    .card-bottom {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-top: auto;
      padding-top: 6px;
    }

    .card-tag {
      font-size: calc(10px * var(--font-scale));
      letter-spacing: 0.1em;
      color: var(--text3);
    }

    .card-arrow {
      font-size: calc(12px * var(--font-scale));
      color: var(--text3);
      transition: transform 0.15s;
    }

    .card:hover .card-arrow {
      transform: translateX(3px);
    }

    /* ─── FLOW ─── */
    .flow-section {
      margin-top: 56px;
      padding-top: 40px;
      padding-bottom: 36px;
      border-top: 2px solid var(--color-border-tertiary);
    }

    .flow-header {
      display: grid;
      align-items: baseline;
      gap: 16px;
      margin-bottom: 32px;
    }

    .flow-zh {
      font-family: "Cormorant Garamond", serif;
      font-size: calc(24px * var(--font-scale));
      font-weight: 300;
      letter-spacing: 0.06em;
      color: var(--text);
    }

    .flow-en {
      font-family: "Cormorant Garamond", serif;
      font-size: calc(11px * var(--font-scale));
      font-weight: 400; /* explicit so an h2 parent doesn't make it bold */
      letter-spacing: 0.24em;
      color: var(--text3);
    }

    .flow-steps {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      border-top: 0.5px solid var(--border);
      border-left: 0.5px solid var(--border);
    }

    .step {
      border-right: 0.5px solid var(--border);
      border-bottom: 0.5px solid var(--border);
      padding: 22px 20px 24px;
      display: flex;
      flex-direction: column;
      gap: 9px;
      background: var(--bg);
      transition: background 0.2s;
      cursor: default;
      overflow: hidden;
    }

    .step:hover {
      background: var(--bg2);
    }

    .step-num {
      font-family: "Cormorant Garamond", serif;
      font-size: calc(28px * var(--font-scale));
      color: var(--text3);
      transition:
        transform 0.2s,
        color 0.2s;
      display: inline-block;
    }

    .step:hover .step-num {
      transform: scale(1.18);
      color: var(--text2);
      transform-origin: left center;
    }

    .step-title {
      font-size: calc(13px * var(--font-scale));
      font-weight: 500;
      color: var(--text);
      letter-spacing: 0.04em;
      transition: transform 0.2s;
      display: inline-block;
    }

    .step:hover .step-title {
      transform: scale(1.1);
      transform-origin: left center;
    }

    .step-num {
      font-family: "Cormorant Garamond", serif;
      font-size: calc(30px * var(--font-scale));
      font-weight: 300;
      color: var(--text3);
      line-height: 1;
    }

    .step-title {
      font-size: calc(13px * var(--font-scale));
      font-weight: 500;
      letter-spacing: 0.06em;
      color: var(--text);
    }

    .step-desc {
      font-size: calc(11px * var(--font-scale));
      color: var(--text2);
      line-height: 1.8;
      letter-spacing: 0.03em;
    }

    .step-badge {
      margin-top: auto;
      font-size: calc(10px * var(--font-scale));
      letter-spacing: 0.1em;
      padding: 3px 9px;
      border: 0.5px solid var(--border);
      color: var(--text3);
      align-self: flex-start;
      text-decoration: none;
      transition:
        background 0.2s,
        color 0.2s,
        border-color 0.2s;
    }

    .step:hover a.step-badge {
      background: var(--text);
      border-color: var(--text);
      color: var(--bg);
    }

    .flow-note {
      margin-top: 16px;
      font-size: calc(10px * var(--font-scale));
      color: var(--text3);
      letter-spacing: 0.06em;
      line-height: 1.9;
    }

    /* ─── CTA ─── */
    .cta {
      margin-top: 40px;
      padding: 24px 28px;
      border: 0.5px solid var(--border);
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .cta-main {
      font-family: "Cormorant Garamond", serif;
      font-size: calc(19px * var(--font-scale));
      font-weight: 400;
      letter-spacing: 0.04em;
    }

    .cta-sub {
      font-size: calc(11px * var(--font-scale));
      color: var(--text3);
      letter-spacing: 0.06em;
      margin-top: 5px;
    }

    .cta-btns {
      display: flex;
      gap: 10px;
    }

    /* ─── WHY US ─── */
    .why-section {
      margin-top: 0;
      margin-left: -40px;
      margin-right: -40px;
      padding: 48px 40px 52px;
      background: var(--bg2);
      margin-left: calc(50% - 50vw);
      margin-right: calc(50% - 50vw);
    }

    .why-section::before {
      content: "";
      position: absolute;
      top: 0;
      right: 0;
      width: 100%;
      height: 100%;
      background: linear-gradient(135deg,
          transparent 40%,
          rgba(88, 88, 58, 0.18) 100%);
      pointer-events: none;
    }

    .why-header {
      max-width: 1300px;
      margin: 0 auto;
      display: grid;
      align-items: baseline;
      gap: 14px;
      margin-bottom: 36px;
    }

    .why-zh {
      font-family: "Cormorant Garamond", serif;
      font-size: calc(24px * var(--font-scale));
      font-weight: 300;
      letter-spacing: 0.04em;
    }

    .why-en {
      font-size: calc(11px * var(--font-scale));
      letter-spacing: 0.22em;
      color: var(--text3);
    }

    .why-cols {
      max-width: 1300px;
      margin: 0 auto;
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      border-top: 0.5px solid var(--border);
      border-left: 0.5px solid var(--border);
    }

    .why-col {
      border-right: 0.5px solid var(--border);
      border-bottom: 0.5px solid var(--border);
      padding: 28px 28px 32px;
      background: var(--bg);
      display: flex;
      flex-direction: column;
      gap: 12px;
      justify-content: space-between;
      height: 560px;
      overflow: hidden;
    }

    .why-col-divider {
      height: 0.5px;
      background: var(--border);
      margin-top: 4px;
    }

    .why-col-num {
      font-family: "Cormorant Garamond", serif;
      font-size: calc(38px * var(--font-scale));
      font-weight: 300;
      color: #e0dcd8;
      line-height: 1;
    }

    .why-col-title {
      display: flex;
      flex-direction: column;
      align-items: flex-start;
      gap: 6px;
      font-size: calc(15px * var(--font-scale));
      font-weight: 500;
      letter-spacing: 0.04em;
    }

    .why-col-desc {
      font-size: calc(12px * var(--font-scale));
      color: var(--text2);
      line-height: 1.95;
      letter-spacing: 0.04em;
    }

    .why-col-sub {
      font-size: calc(11px * var(--font-scale));
      color: var(--text3);
      letter-spacing: 0.05em;
      padding-top: 14px;
      border-top: 0.5px solid var(--border);
      margin-top: 4px;
      line-height: 1.8;
    }

    .why-divider {
      height: 0.5px;
      background: var(--border);
      margin: 4px 0;
    }

    .why-col-tag {
      font-size: calc(10px * var(--font-scale));
      letter-spacing: 0.06em;
      color: var(--text3);
      font-weight: 400;
    }

    /* ─── WHY: payment rows ─── */
    .why-pay-list {
      display: flex;
      flex-direction: column;
      gap: 12px;
      margin: 12px 0;
    }

    .why-pay-row {
      display: flex;
      flex-direction: column;
      gap: 10px;
      padding: 16px 18px;
      border: 0.5px solid var(--border);
      background: var(--bg1);
      cursor: default;
      transition:
        background 0.2s,
        transform 0.28s cubic-bezier(0.22, 0.61, 0.36, 1);
    }

    .why-pay-row:hover {
      background: var(--bg2);
      transform: translateY(-3px);
    }

    .why-pay-badge {
      font-size: calc(10px * var(--font-scale));
      letter-spacing: 0.06em;
      padding: 2px 8px;
      white-space: nowrap;
      align-self: flex-start;
    }

    .pay-one {
      background: #e6eef7;
      color: #3a5a82;
      border: 0.5px solid #b8cfe8;
    }

    .pay-install {
      background: #e8f0e4;
      color: #4a6741;
      border: 0.5px solid #c2d4bb;
    }

    .why-pay-name {
      font-size: calc(12px * var(--font-scale));
      font-weight: 500;
      color: var(--text);
      margin: 0 0 2px;
    }

    .why-pay-detail {
      font-size: calc(11px * var(--font-scale));
      color: var(--text2);
      line-height: 1.6;
      margin: 0;
    }

    .why-pay-note {
      font-size: calc(10px * var(--font-scale));
      color: var(--text3);
      font-style: italic;
      margin: 2px 0 0;
    }

    /* ─── WHY: FAQ accordion ─── */
    .why-faq-cat {
      border-top: 0.5px solid var(--border);
    }

    .why-faq-cat:last-child {
      border-bottom: 0.5px solid var(--border);
    }

    .why-faq-cat-q {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 13px 0;
      cursor: pointer;
      gap: 8px;
      transition: opacity 0.15s;
    }

    .why-faq-cat-q:hover {
      opacity: 0.65;
    }

    .why-faq-cat-left {
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .why-faq-cat-num {
      font-size: calc(11px * var(--font-scale));
      color: var(--text3);
      letter-spacing: 0.08em;
      min-width: 20px;
    }

    .why-faq-cat-text {
      font-size: calc(13px * var(--font-scale));
      font-weight: 500;
      color: var(--text);
    }

    .why-faq-icon {
      font-size: calc(13px * var(--font-scale));
      color: var(--text3);
      flex-shrink: 0;
      transition: transform 0.2s;
    }

    .why-faq-cat-body {
      overflow: hidden;
      max-height: 0;
      opacity: 0;
      padding-bottom: 0;
      transition: max-height 0.38s ease, opacity 0.25s ease, padding-bottom 0.38s ease;
    }

    .why-faq-cat.open .why-faq-cat-body {
      max-height: 700px;
      opacity: 1;
      padding-bottom: 6px;
    }

    .why-faq-cat.open>.why-faq-cat-q .why-faq-icon {
      transform: rotate(45deg);
    }

    .why-faq-item {
      border-top: 0.5px solid var(--border);
    }

    .why-faq-q {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 11px 0 11px 28px;
      cursor: pointer;
      gap: 8px;
      transition: opacity 0.15s;
    }

    .why-faq-q:hover {
      opacity: 0.65;
    }

    .why-faq-q span {
      font-size: calc(12px * var(--font-scale));
      color: #3a5a82;
      line-height: 1.5;
    }

    .why-faq-a {
      font-size: calc(12px * var(--font-scale));
      color: var(--text2);
      line-height: 1.75;
      padding: 0 0 0 28px;
      overflow: hidden;
      max-height: 0;
      opacity: 0;
      margin: 0;
      transition: max-height 0.32s ease, opacity 0.2s ease, padding-bottom 0.32s ease;
    }

    .why-faq-item.open .why-faq-a {
      max-height: 400px;
      opacity: 1;
      padding-bottom: 12px;
    }

    .why-faq-item.open .why-faq-icon {
      transform: rotate(45deg);
    }

    /* ─── SIT ─── */
    .sit-section {
      margin-top: 56px;
      padding-top: 36px;
      border-top: 0.5px solid var(--color-border-tertiary);
    }

    .sit-header {
      display: grid;
      align-items: baseline;
      gap: 16px;
      margin-bottom: 28px;
    }

    .sit-zh {
      font-family: "Cormorant Garamond", serif;
      font-size: calc(24px * var(--font-scale));
      font-weight: 300;
      letter-spacing: 0.04em;
    }

    .sit-en {
      font-size: calc(11px * var(--font-scale));
      letter-spacing: 0.22em;
      color: var(--text3);
    }

    .sit-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      border-top: 0.5px solid var(--border);
      border-left: 0.5px solid var(--border);
    }

    .scard {
      border-right: 0.5px solid var(--border);
      border-bottom: 0.5px solid var(--border);
      display: flex;
      flex-direction: column;
    }

    .scard-img {
      width: 100%;
      height: 240px;
      background: var(--bg3);
      display: flex;
      align-items: center;
      justify-content: center;
      overflow: hidden;
      flex-shrink: 0;
      position: relative;
    }

    .scard-overlay {
      position: absolute;
      inset: 0;
      background: rgba(26, 24, 20, 0);
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 24px;
      transition: background 0.25s;
    }

    .scard:hover .scard-overlay {
      background: rgba(26, 24, 20, 0.72);
    }

    .scard-overlay-text {
      color: var(--bg);
      font-size: calc(10px * var(--font-scale));
      line-height: 1.8;
      letter-spacing: 0.05em;
      text-align: center;
      opacity: 0;
      transition: opacity 0.25s;
    }

    .scard:hover .scard-overlay-text {
      opacity: 1;
    }

    .scard-ph {
      font-size: calc(10px * var(--font-scale));
      letter-spacing: 0.1em;
      color: var(--text3);
    }

    .scard-img:not(.loaded)::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(90deg,
          transparent 0%,
          rgba(255, 255, 255, 0.45) 50%,
          transparent 100%);
      animation: struct-shimmer 1.4s ease-in-out infinite;
      pointer-events: none;
      z-index: 1;
    }

    .scard-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
      opacity: 0;
      transition: opacity 0.4s ease;
    }

    .scard-img img.loaded {
      opacity: 1;
    }

    .scard-body {
      padding: 20px 22px 24px;
      display: flex;
      flex-direction: column;
      gap: 6px;
    }

    .scard-en {
      font-family: "Cormorant Garamond", serif;
      font-size: calc(12px * var(--font-scale));
      letter-spacing: 0.08em;
      color: var(--text3);
      font-style: italic;
    }

    .scard-zh {
      font-size: calc(14px * var(--font-scale));
      font-weight: 500;
      letter-spacing: 0.05em;
    }

    .scard-hint {
      font-size: calc(11px * var(--font-scale));
      color: var(--text2);
      line-height: 1.8;
      letter-spacing: 0.04em;
      margin-top: 2px;
    }

    /* ─── MODAL ─── */
    .mwrap {
      position: fixed;
      inset: 0;
      z-index: 1100;
      display: flex;
      align-items: center;
      justify-content: center;
      pointer-events: none;
      opacity: 0;
      transition: opacity 0.25s;
    }

    .mwrap.show {
      opacity: 1;
      pointer-events: all;
    }

    .mbg {
      position: absolute;
      inset: 0;
      background: rgba(20, 18, 15, 0.6);
    }

    .modal {
      position: relative;
      width: 1280px;
      max-width: 94vw;
      height: 86vh;
      background: var(--bg);
      display: flex;
      flex-direction: column;
      transform: translateY(16px);
      transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

    .mwrap.show .modal {
      transform: translateY(0);
    }

    /* modal top bar */
    .mbar {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 16px 28px;
      border-bottom: 0.5px solid var(--border);
      flex-shrink: 0;
    }

    .mbar-ctx {
      display: flex;
      flex-direction: column;
      gap: 2px;
    }

    .mbar-ctx span:first-child {
      font-size: calc(7px * var(--font-scale));
      letter-spacing: 0.2em;
      color: var(--text3);
    }

    .mbar-ctx span:last-child {
      font-size: calc(9px * var(--font-scale));
      letter-spacing: 0.08em;
      color: var(--text2);
    }

    .mbar-right {
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .mcounter {
      font-size: calc(9px * var(--font-scale));
      letter-spacing: 0.06em;
      color: var(--text3);
      min-width: 46px;
      text-align: center;
    }

    .mnav {
      width: 28px;
      height: 28px;
      background: var(--text);
      color: var(--bg);
      border: none;
      cursor: pointer;
      font-size: calc(10px * var(--font-scale));
      display: flex;
      align-items: center;
      justify-content: center;
      transition:
        background 0.15s,
        transform 0.1s;
    }

    .mnav:hover {
      background: #4a4540;
    }

    .mnav:active {
      transform: scale(0.95);
    }

    .mclose {
      width: 28px;
      height: 28px;
      background: var(--text);
      color: var(--bg);
      border: none;
      cursor: pointer;
      font-size: calc(10px * var(--font-scale));
      display: flex;
      align-items: center;
      justify-content: center;
      margin-left: 18px;
      transition:
        background 0.15s,
        transform 0.1s;
    }

    .mclose:hover {
      background: #4a4540;
    }

    .mclose:active {
      transform: scale(0.95);
    }

    /* modal body */
    .mbody {
      display: flex;
      flex: 1;
      overflow: hidden;
      min-height: 0;
    }

    /* LEFT */
    .mleft {
      width: 44%;
      flex-shrink: 0;
      display: flex;
      flex-direction: column;
      border-right: 0.5px solid var(--border);
    }

    .mleft-img {
      flex: 1;
      background: var(--color-background-primary);
      display: flex;
      align-items: center;
      justify-content: center;
      min-height: 0;
      padding: 24px;
    }

    .mleft-img svg {
      opacity: 0.2;
      width: 130px;
      height: 130px;
    }

    .mleft-img img {
      width: 100%;
      height: 100%;
      object-fit: contain;
    }

    .mleft-thumbs {
      display: flex;
      gap: 8px;
      padding: 8px;
      flex-shrink: 0;
      border-top: 0.5px solid var(--border);
    }

    .thumb {
      flex: 1;
      height: 66px;
      background: transparent;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 5px;
      cursor: pointer;
      border: 0.5px solid var(--border);
      transition: border-color 0.15s, background 0.15s;
      font-size: calc(10px * var(--font-scale));
      letter-spacing: 0.08em;
      color: var(--text3);
    }

    .thumb svg {
      opacity: 0.3;
      width: 26px;
      height: 18px;
    }

    .thumb:hover {
      border-color: var(--border2);
    }

    .thumb.sel {
      border-color: var(--text);
      background: var(--bg2);
      color: var(--text2);
    }

    .thumb.sel svg {
      opacity: 0.5;
    }

    /* RIGHT */
    .mright {
      flex: 1;
      overflow-y: auto;
      overscroll-behavior: contain;
      display: flex;
      flex-direction: column;
    }

    .mright::-webkit-scrollbar {
      width: 5px;
    }

    .mright::-webkit-scrollbar-track {
      background: transparent;
    }

    .mright::-webkit-scrollbar-thumb {
      background: var(--border);
    }

    .rsec {
      padding: 24px 32px;
      border-bottom: 0.5px solid var(--border);
    }

    .rsec:last-child {
      border-bottom: none;
    }

    .r-zh {
      font-family: "Cormorant Garamond", serif;
      font-size: calc(34px * var(--font-scale));
      font-weight: 300;
      letter-spacing: 0.03em;
      line-height: 1;
    }

    .r-en {
      font-family: "Cormorant Garamond", serif;
      font-size: calc(13px * var(--font-scale));
      letter-spacing: 0.12em;
      color: var(--text2);
      font-style: italic;
      margin-top: 4px;
      margin-bottom: 14px;
    }

    .r-desc {
      font-size: calc(12px * var(--font-scale));
      color: var(--text2);
      line-height: 2;
      letter-spacing: 0.04em;
    }

    .slabel {
      font-size: calc(13px * var(--font-scale));
      letter-spacing: 0.1em;
      color: var(--text);
      font-weight: 500;
      margin-bottom: 14px;
    }

    /* form options */
    .fopts {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 8px;
    }

    .fopts.two-col {
      grid-template-columns: repeat(2, 1fr);
    }

    .fopt {
      border: 0.5px solid var(--border);
      padding: 12px 14px;
      cursor: pointer;
      transition: all 0.15s;
    }

    .fopt:hover {
      border-color: var(--border2);
    }

    .fopt.sel {
      border-color: var(--text);
      background: var(--bg2);
    }

    .fopt-name {
      font-size: calc(12px * var(--font-scale));
      font-weight: 500;
      letter-spacing: 0.05em;
      margin-bottom: 5px;
    }

    .fopt-desc {
      font-size: calc(10px * var(--font-scale));
      color: var(--text2);
      letter-spacing: 0.03em;
      line-height: 1.7;
    }

    /* size chips */
    .size-chips {
      display: flex;
      gap: 8px;
      flex-wrap: wrap;
    }

    .schip {
      padding: 7px 18px;
      border: 0.5px solid var(--border);
      font-size: calc(11px * var(--font-scale));
      letter-spacing: 0.06em;
      cursor: pointer;
      transition: all 0.15s;
      color: var(--text2);
      font-family: var(--font-sans);
    }

    .schip:hover {
      border-color: var(--border2);
      color: var(--text);
    }

    .schip.sel {
      border-color: var(--text);
      background: var(--text);
      color: var(--bg);
    }

    /* specs */
    .spec-row {
      display: flex;
      justify-content: space-between;
      align-items: baseline;
      padding: 10px 0;
      border-bottom: 0.5px solid var(--border);
    }

    .spec-row:first-of-type {
      border-top: 0.5px solid var(--border);
    }

    .sl {
      font-size: calc(12px * var(--font-scale));
      color: var(--text2);
      letter-spacing: 0.05em;
    }

    .sv {
      font-size: calc(12px * var(--font-scale));
      font-weight: 500;
      text-align: right;
    }

    /* structure */
    .struct-list {
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .struct-item {
      display: flex;
      gap: 12px;
      align-items: flex-start;
    }

    .struct-dot {
      width: 4px;
      height: 4px;
      border-radius: 50%;
      background: var(--text3);
      flex-shrink: 0;
      margin-top: 12px;
    }

    .struct-text {
      font-size: calc(12px * var(--font-scale));
      color: var(--text2);
      line-height: 1.85;
      letter-spacing: 0.03em;
      display: flex;
      flex-direction: column;
      gap: 2px;
    }

    .struct-text strong {
      color: var(--text);
      font-weight: 500;
    }

    /* swatches */
    .swatches {
      display: flex;
      gap: 10px;
      flex-wrap: wrap;
    }

    .sw-wrap {
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 5px;
    }

    .sw {
      width: 40px;
      height: 40px;
      border: 0.5px solid var(--border);
      cursor: pointer;
      transition: outline 0.1s;
    }

    .sw:hover,
    .sw.sel {
      outline: 1.5px solid var(--text);
      outline-offset: 2px;
    }

    .sw-name {
      font-size: calc(9px * var(--font-scale));
      color: var(--text3);
      letter-spacing: 0.05em;
      text-align: center;
    }

    /* bottom btns */
    .mbtns {
      display: flex;
      gap: 12px;
      padding: 20px 32px;
      border-top: 0.5px solid var(--border);
      flex-shrink: 0;
      background: var(--bg);
    }

    .mbtns a,
    .cta-btns a {
      flex: 1;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      text-decoration: none;
      white-space: nowrap;
    }

    /* ─── ANIMATIONS ─── */
    .fade-up {
      opacity: 0;
      transform: translateY(24px);
      transition:
        opacity 0.6s ease,
        transform 0.6s ease;
    }

    .fade-up.visible {
      opacity: 1;
      transform: translateY(0);
    }

    .step {
      opacity: 0;
      transform: translateY(16px);
      transition:
        opacity 0.5s ease,
        transform 0.5s ease,
        background 0.2s;
    }

    .step.visible {
      opacity: 1;
      transform: translateY(0);
    }

    /* ─── MOBILE ─────────────────────────────────────────────── */
    .resp-br {
      display: none;
    }

    @media (max-width: 768px) {

      .resp-br {
        display: inline;
      }

      /* Filter */
      .filter-wrap {
        overflow: hidden;
      }

      .filter-wrap.fade-right::after {
        content: "";
        position: absolute;
        right: 0;
        top: 0;
        bottom: 0;
        width: 40px;
        background: linear-gradient(to right, transparent, #fafaf8);
        pointer-events: none;
        z-index: 1;
      }

      .filter-wrap.fade-left::before {
        content: "";
        position: absolute;
        left: 0;
        top: 0;
        bottom: 0;
        width: 40px;
        background: linear-gradient(to left, transparent, #fafaf8);
        pointer-events: none;
        z-index: 1;
      }

      .filter-bar {
        padding: 20px 0;
        gap: 6px;
        overflow-x: auto;
        flex-wrap: nowrap;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
      }

      .filter-bar::-webkit-scrollbar {
        display: none;
      }

      .fp {
        white-space: nowrap;
        font-size: calc(10px * var(--m-font-scale));
        padding: 5px 12px;
      }

      /* Grid */
      .grid {
        grid-template-columns: repeat(2, 1fr);
      }

      .card-img {
        height: 200px;
        background: var(--color-background-primary);
      }

      .card--scroll-hover .card-img-hover {
        opacity: 1;
      }

      .card--scroll-hover .card-img-primary {
        opacity: 0;
      }

      /* Flow */
      .flow-section {
        margin-left: calc(50% - 40vw);
        margin-right: calc(50% - 40vw);
      }

      .flow-steps {
        grid-template-columns: 1fr;
        border: 0.5px solid var(--border);
      }

      .flow-note {
        font-size: 10px;
      }

      .step {
        border-right: none;
        border-bottom: 0.5px solid var(--border);
      }

      /* Why */
      .why-section {
        margin-left: 0;
        margin-right: 0;
        padding: 40px 20px;
        margin-left: calc(50% - 50vw);
        margin-right: calc(50% - 50vw);
      }

      .why-header {
        padding: 0px 30px;
        gap: 0px;
      }

      .why-cols {
        grid-template-columns: 1fr;
        border-right: 0.5px solid var(--border);
      }

      .why-col {
        border-right: none;
      }

      /* Sit */
      .sit-section {
        padding: 40px 0px;
      }

      .sit-grid {
        grid-template-columns: 1fr 1fr;
      }

      .scard-img {
        height: 160px;
      }

      /* CTA */
      .cta {
        padding: 28px 20px;
        flex-direction: column;
        gap: 16px;
        align-items: flex-start;
      }

      .cta-btns {
        display: flex;
        gap: 10px;
        flex-wrap: wrap;
      }

      /* Modal */
      .modal {
        width: 96vw;
        max-height: 92vh;
        height: 92vh;
      }

      .mbody {
        flex-direction: column;
      }

      .mleft {
        width: 100%;
        height: 250px;
        flex-shrink: 0;
        flex-direction: column;
        border-right: none;
        border-bottom: 0.5px solid var(--border);
      }

      .mleft-img img {
        height: 194px;
        object-fit: contain;
        object-position: center 50%;
      }

      .mthumb-col {
        display: flex;
        flex-direction: row;
        overflow-x: auto;
        gap: 0;
        border-top: 0.5px solid var(--border);
        border-left: none;
        height: auto;
        min-width: unset;
      }

      .thumb {
        width: 80px;
        height: 40px;
        border-right: 0.5px solid var(--border);
        flex-shrink: 0;
        font-size: calc(9px * var(--m-font-scale));
      }

      .thumb svg {
        display: none;
      }

      .mright {
        flex: 1;
        min-height: 0;
        overflow-y: auto;
        padding: 20px 16px;
      }

      .mbar {
        padding: 12px 16px;
      }

      .mbar-ctx {
        font-size: calc(9px * var(--m-font-scale));
      }

      .mbtn-row {
        flex-direction: column;
        gap: 0;
      }

      .mbtn-row button {
        width: 100%;
        border-right: none;
        border-top: 0.5px solid var(--border);
      }

      .fopts {
        grid-template-columns: 1fr 1fr;
      }

      .fopts.two-col {
        grid-template-columns: 1fr 1fr;
      }

      /* Section headers */
      .section-head {
        padding: 0 20px;
      }

      .flow-head,
      .why-head,
      .sit-head {
        padding: 0 20px 20px;
      }

      /* Scroll-reveal overlay — mobile only (hover disabled on touch) */
      .scard:hover .scard-overlay {
        background: rgba(26, 24, 20, 0);
      }

      .scard:hover .scard-overlay-text {
        opacity: 0;
      }

      .scard-overlay {
        transition: background 0.65s ease;
      }

      .scard-overlay-text {
        transition: opacity 0.65s ease 0.2s;
      }

      .scard--in-view .scard-overlay {
        background: rgba(26, 24, 20, 0.72);
      }

      .scard--in-view .scard-overlay-text {
        opacity: 1;
      }
    }

    @media (max-width: 480px) {
      .sit-grid {
        grid-template-columns: 1fr;
      }

      .scard-img {
        height: 200px;
      }
    }

    /* ── Struct title with lightbox trigger ── */
    .struct-title-btn {
      display: inline-flex;
      align-items: center;
      gap: 5px;
      background: none;
      border: none;
      padding: 0;
      cursor: pointer;
      font-weight: 600;
      color: #1a1814;
      font-size: inherit;
      letter-spacing: inherit;
      min-width: 72px;
      flex-shrink: 0;
      text-align: left;
      transition: color 0.15s;
    }

    .struct-title-btn:hover {
      color: var(--accent, #8c6a4a);
    }

    .struct-info-icon {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 13px;
      height: 13px;
      border-radius: 50%;
      border: 1.5px solid currentColor;
      font-size: 8px;
      font-style: italic;
      font-family: "Georgia", serif;
      flex-shrink: 0;
      opacity: 0.5;
      transition: opacity 0.15s;
    }

    .struct-title-btn:hover .struct-info-icon {
      opacity: 1;
    }

    /* ── Struct lightbox ── */
    .struct-lb-overlay {
      position: fixed;
      inset: 0;
      background: rgba(20, 18, 16, 0.78);
      z-index: 9900;
      display: none;
      align-items: center;
      justify-content: center;
      padding: 2rem;
      cursor: pointer;
    }

    .struct-lb-overlay.open {
      display: flex;
    }

    .struct-lb-box {
      background: #fff;
      max-width: 680px;
      width: 100%;
      max-height: 88vh;
      overflow-y: auto;
      cursor: default;
      padding: 2rem;
      display: flex;
      flex-direction: column;
      gap: 1.25rem;
      position: relative;
    }

    .struct-lb-hd {
      display: flex;
      justify-content: space-between;
      align-items: flex-start;
      border-bottom: 0.5px solid #e0ddd9;
      padding-bottom: 1rem;
    }

    .struct-lb-title {
      font-size: 14px;
      font-weight: 600;
      color: #1a1814;
      letter-spacing: 0.04em;
    }

    .struct-lb-close {
      background: none;
      border: none;
      font-size: 18px;
      cursor: pointer;
      color: #999;
      padding: 0;
      line-height: 1;
      flex-shrink: 0;
      transition: color 0.15s;
    }

    .struct-lb-close:hover {
      color: #1a1814;
    }

    .struct-lb-images {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 10px;
    }

    .struct-lb-images.single {
      grid-template-columns: 1fr;
    }

    .struct-lb-img-wrap {
      position: relative;
      background: #edebe8;
      overflow: hidden;
      min-height: 160px;
    }

    .struct-lb-img-wrap:not(.loaded)::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(90deg,
          transparent 0%,
          rgba(255, 255, 255, 0.55) 50%,
          transparent 100%);
      animation: struct-shimmer 1.4s ease-in-out infinite;
      pointer-events: none;
    }

    @keyframes struct-shimmer {
      from {
        transform: translateX(-100%);
      }

      to {
        transform: translateX(100%);
      }
    }

    .struct-lb-img-wrap img {
      width: 100%;
      height: 100%;
      display: block;
      opacity: 0;
      transition: opacity 0.35s ease;
    }

    .struct-lb-img-wrap.loaded img {
      opacity: 1;
    }

    @media (max-width: 540px) {
      .struct-lb-box {
        padding: 1.25rem;
      }

      .struct-lb-images {
        grid-template-columns: 1fr;
      }
    }

    /* ── Craft Gallery ── */
    .craft-section {
      margin-top: 56px;
      padding-top: 40px;
      padding-bottom: 36px;
      border-top: 2px solid var(--color-border-tertiary);
      overflow: hidden;
    }

    .craft-header {
      display: flex;
      justify-content: space-between;
      align-items: flex-start;
      margin-bottom: 1rem;
    }

    .craft-header-title {
      display: flex;
      flex-direction: column;
      gap: 4px;
      margin: 0; /* keeps h2 usage identical to the original div */
    }

    .craft-desc {
      font-size: calc(13px * var(--font-scale));
      color: var(--text2);
      line-height: 1.8;
      margin-bottom: 1.5rem;
    }

    .craft-desc strong {
      font-weight: 500;
      color: var(--text);
    }

    .craft-nav-btns {
      display: flex;
      gap: 6px;
      align-items: center;
      justify-content: flex-end;
      margin-bottom: 8px;
    }

    .craft-nav-btn {
      width: 28px;
      height: 28px;
      background: var(--text);
      color: var(--bg);
      border: none;
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 14px;
      transition: background 0.15s;
      flex-shrink: 0;
    }

    .craft-nav-btn:hover {
      background: #444;
    }

    .craft-nav-btn:active {
      transform: scale(0.95);
    }

    .craft-scroll {
      display: flex;
      gap: 1px;
      background: var(--border);
      overflow-x: scroll;
      scroll-behavior: smooth;
      scroll-snap-type: x mandatory;
      -ms-overflow-style: none;
      scrollbar-width: none;
    }

    .craft-scroll::-webkit-scrollbar {
      display: none;
    }

    .craft-item {
      flex: 0 0 31.25%;
      min-width: 31.25%;
      scroll-snap-align: start;
      background: var(--bg);
      padding-bottom: 1rem;
    }

    .craft-img {
      position: relative;
      aspect-ratio: 7/5;
      background: #1c1c1c;
      overflow: hidden;
      cursor: default;
    }

    .craft-img img {
      position: absolute;
      inset: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .craft-label {
      position: absolute;
      bottom: 50%;
      left: 0;
      right: 0;
      transform: translateY(50%);
      text-align: center;
      font-size: 9px;
      letter-spacing: 0.2em;
      color: rgba(255, 255, 255, 0.3);
      transition: opacity 0.3s;
      pointer-events: none;
    }

    .craft-overlay {
      position: absolute;
      inset: 0;
      background: rgba(0, 0, 0, 0.62);
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 16px;
      opacity: 0;
      transition: opacity 0.3s;
    }

    .craft-overlay p {
      font-size: 11.5px;
      color: rgba(255, 255, 255, 0.68);
      line-height: 1.7;
      text-align: center;
      margin: 0;
    }

    .craft-item:hover .craft-overlay,
    .craft-item--hinted .craft-overlay {
      opacity: 1;
    }

    .craft-item:hover .craft-label,
    .craft-item--hinted .craft-label {
      opacity: 0;
    }

    .craft-title {
      font-size: calc(12px * var(--font-scale));
      color: var(--text);
      font-weight: 500;
      padding: 10px 14px 4px;
    }

    .craft-sub {
      font-size: calc(11px * var(--font-scale));
      color: var(--text2);
      padding: 0 14px;
    }

    .craft-hint {
      font-size: 11px;
      color: var(--text3);
      margin-top: 10px;
      letter-spacing: 0.05em;
    }

    @media (max-width: 768px) {
      .craft-item {
        flex: 0 0 80%;
        min-width: 80%;
      }

      .craft-label {
        display: none;
      }

      .craft-overlay {
        opacity: 1;
        inset: auto;
        bottom: 0;
        left: 0;
        right: 0;
        align-items: flex-end;
        justify-content: flex-start;
        background: linear-gradient(to top, rgba(0, 0, 0, 0.72) 0%, transparent 100%);
        padding: 28px 10px 8px;
      }

      .craft-overlay p {
        text-align: left;
        font-size: 10.5px;
      }

      .craft-item:hover .craft-overlay,
      .craft-item--hinted .craft-overlay {
        opacity: 1;
      }
    }