.feature-tabs { display: grid; grid-template-columns: minmax(240px,.8fr) minmax(0,1.2fr); gap: 56px; align-items: start; }
.tab-list[role="tablist"] { display: flex; flex-direction: column; min-width: 0; }
.tab-list [role="tab"] {
  position: relative; display: flex; align-items: center; justify-content: space-between; gap: 16px;
  width: 100%; min-height: 76px; padding: 18px 20px 18px 26px;
  border: 0; border-bottom: 1px solid var(--border); background: var(--clear); color: var(--text-muted);
  text-align: left; font: var(--weight-regular) 26px/1.35 var(--font-display);
}
.tab-list [role="tab"]::before { content: ""; position: absolute; left: 0; top: 20px; bottom: 20px; width: 3px; background: var(--clear); }
.tab-list [role="tab"]::after {
  content: "+"; display: inline-flex; justify-content: center; align-items: center;
  width: 32px; height: 32px; flex-shrink: 0; border: 1px solid var(--border); border-radius: var(--r-pill);
  font: var(--weight-regular) 22px/1 var(--font-body);
}
.tab-list [role="tab"][aria-selected="true"] { color: var(--text); }
.tab-list [role="tab"][aria-selected="true"]::before { background: var(--accent); }
.tab-list [role="tab"]:hover { color: var(--text); }
.tab-panels { min-width: 0; }
.tab-panel {
  border: 1px solid var(--border); border-radius: var(--r-card);
  background: var(--bg-panel); color: var(--text); box-shadow: var(--shadow-soft); min-width: 0;
}
.feature-material {
  margin: 12px 12px 0; padding: 32px 24px;
  border-radius: var(--r-win); background: var(--bg-ink); color: var(--ink-text);
  font: var(--weight-regular) var(--size-small)/2 var(--font-mono); overflow-x: auto;
}
.feature-material code { white-space: pre; overflow-wrap: normal; }
.feature-copy { padding: 28px 32px 36px; }
.feature-copy h3 { margin-bottom: 18px; }
.feature-copy p { color: var(--text-muted); line-height: 1.9; }
.accordion-trigger { display: none; }
.toc {
  display: flex; flex-wrap: wrap; gap: 8px 12px; min-width: 0;
  padding: 16px; border: 1px solid var(--border); border-radius: var(--r-win);
  background: var(--bg-panel); color: var(--text); margin-bottom: 40px;
}
.toc a { display: inline-flex; align-items: center; min-height: 44px; padding: 8px 14px; border-radius: var(--r-pill); font-size: var(--size-small); }
.toc a:hover,.toc a[aria-current="location"] { background: var(--border); color: var(--text); }
.toc.is-sticky { position: sticky; top: 16px; z-index: 5; }
.faq-item { border: 1px solid var(--border); border-radius: var(--r-win); background: var(--bg-panel); color: var(--text); box-shadow: var(--shadow-hair); }
.faq-item + .faq-item { margin-top: 12px; }
.faq-item summary { display: flex; align-items: center; justify-content: space-between; gap: 20px; min-height: 72px; padding: 20px 24px; list-style: none; cursor: pointer; font-weight: var(--weight-medium); }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; flex-shrink: 0; font: var(--weight-regular) 24px/1 var(--font-body); color: var(--text-muted); }
.faq-item[open] summary::after { content: "−"; }
.faq-answer { padding: 0 24px 24px; color: var(--text-muted); line-height: 1.85; }
.term-card { border: 1px solid var(--border); border-radius: var(--r-card); padding: 28px; background: var(--bg-panel); color: var(--text); box-shadow: var(--shadow-soft); min-width: 0; }
.term-card dt { font: var(--weight-regular) 24px/1.4 var(--font-display); overflow-wrap: anywhere; }
.term-card dd { margin-top: 14px; color: var(--text-muted); }
.term-card .badge { margin-bottom: 20px; }
.app-store-button {
  display: inline-flex; align-items: center; justify-content: center; gap: 12px;
  min-height: 56px; max-width: 100%; padding: 12px 24px;
  border: 1px solid var(--bg-ink); border-radius: var(--r-pill);
  background: var(--bg-ink); color: var(--ink-text); box-shadow: var(--shadow-soft);
  font: var(--weight-strong) 16px/1.25 var(--font-body);
  transition: background-color var(--motion-fast),transform var(--motion-fast);
}
.app-store-button svg { width: 24px; height: 24px; flex-shrink: 0; }
.app-store-button small { display: block; font-size: 11px; font-weight: var(--weight-regular); }
.app-store-button strong { display: block; }
.app-store-button:hover,.app-store-button.is-hover { background: var(--ink-line); color: var(--ink-text); }
.app-store-button:active { transform: translateY(1px); }
.app-store-button.is-focus { outline: 2px solid var(--accent); outline-offset: 4px; }
.app-store-button[aria-disabled="true"] { background: var(--border); color: var(--text-muted); border-color: var(--border); box-shadow: none; pointer-events: none; }
.fact-row { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; min-width: 0; }
.fact-pill,.badge {
  display: inline-flex; align-items: center; gap: 8px; max-width: 100%; min-width: 0;
  padding: 6px 12px; border: 1px solid var(--border); border-radius: var(--r-pill);
  background: var(--bg-panel); color: var(--text-muted); font-size: var(--size-caption);
  overflow-wrap: anywhere; white-space: normal;
}
.fact-pill b { color: var(--text); font-weight: var(--weight-medium); }
.fact-pill .ok { width: 6px; height: 6px; margin-top: 0; box-shadow: none; }
.badge-ink { background: var(--bg-ink); color: var(--ink-text); border-color: var(--ink-line); }
.badge-accent { background: var(--bg-panel); color: var(--accent-dark); border-color: var(--accent); }
.official-shot { width: 100%; max-width: 280px; margin-inline: auto; padding: 0; flex-shrink: 0; min-width: 0; }
.official-shot img { display: block; width: 100%; height: auto; border-radius: 10px; }
.official-shot { border: 1px solid var(--border); border-radius: var(--r-shot); background: var(--bg-panel); color: var(--text); }
.official-shot figcaption { padding: 14px 12px; font-size: var(--size-caption); line-height: 1.6; color: var(--text-muted); }
.shot-row { display: flex; flex-wrap: wrap; gap: 32px; align-items: start; }
.device-card { display: flex; align-items: flex-start; gap: 24px; }
.device-card > svg { width: 48px; height: 64px; color: var(--text-muted); flex-shrink: 0; }
.device-card > div { min-width: 0; }
.device-card h3 { font-size: 30px; }
.device-card .card-link { margin-top: 18px; }
.article-card { display: flex; flex-direction: column; }
.article-card h3 { margin-top: 24px; font-size: 26px; line-height: 1.4; }
.article-card h3 a:hover { text-decoration: underline; text-underline-offset: 5px; }
.article-card .article-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; font-size: var(--size-caption); color: var(--text-muted); }
.article-card .card-link { margin-top: auto; padding-top: 24px; }
.callout {
  margin: 28px 0; padding: 24px 28px; border: 1px solid var(--border); border-left: 3px solid var(--accent);
  border-radius: var(--r-win); background: var(--bg-panel); color: var(--text); box-shadow: var(--shadow-hair);
}
.callout p + p { margin-top: 12px; }
.callout strong { display: block; margin-bottom: 8px; }
.callout-risk { border-left-color: var(--error); }
.table-scroll { max-width: 100%; min-width: 0; overflow-x: auto; -webkit-overflow-scrolling: touch; border: 1px solid var(--border); border-radius: var(--r-win); }
.data-table { width: 100%; border-collapse: collapse; text-align: left; font-size: var(--size-small); }
.data-table th,.data-table td,.prose table th,.prose table td,.article-body table th,.article-body table td {
  min-width: 7em; padding: 16px 20px; vertical-align: top;
  border-bottom: 1px solid var(--border); overflow-wrap: normal; word-break: normal;
}
.data-table th,.prose table th,.article-body table th { background: var(--border); color: var(--text); font-weight: var(--weight-strong); }
.data-table td,.prose table td,.article-body table td { background: var(--bg-panel); color: var(--text); }
.data-table tr:last-child td { border-bottom: 0; }
.prose table,.article-body table {
  display: block; overflow-x: auto; -webkit-overflow-scrolling: touch;
  max-width: 100%; min-width: 0; border-collapse: collapse; margin-block: 28px;
}
.prose table code,.article-body table code { overflow-wrap: anywhere; }
.dl-fab {
  position: fixed; right: 24px; bottom: max(24px,env(safe-area-inset-bottom)); z-index: 20;
  display: flex; align-items: center; gap: 12px; max-width: calc(100% - 40px); min-height: 56px;
  padding: 12px 20px; border: 1px solid var(--border); border-radius: var(--r-pill);
  background: var(--bg-panel); color: var(--text); box-shadow: var(--shadow-float); font-size: var(--size-small);
}
.dl-fab svg { width: 20px; height: 20px; flex-shrink: 0; }
.dl-fab small { display: block; color: var(--text-muted); font-size: 11px; }
.dl-fab:hover { border-color: var(--accent); }
.store-endcard {
  margin-top: 64px; padding: 32px; border: 1px solid var(--border); border-radius: var(--r-card);
  background: var(--bg-panel); color: var(--text); box-shadow: var(--shadow-soft);
}
.store-endcard p { margin-top: 14px; color: var(--text-muted); }
.store-endcard .btn { margin-top: 24px; }
.preview-section { padding-top: 140px; padding-bottom: 140px; }
.preview-section > h2 { margin-bottom: 40px; }
.preview-section .grid-two + .grid-two { margin-top: 24px; }
.preview-section .fact-row { margin-top: 24px; }
.preview-colors { display: grid; grid-template-columns: repeat(auto-fit,minmax(140px,1fr)); gap: 16px; }
.swatch { min-width: 0; padding: 12px; border: 1px solid var(--border); border-radius: var(--r-win); background: var(--bg-panel); color: var(--text); }
.swatch i { display: block; height: 72px; margin-bottom: 12px; border: 1px solid var(--border); border-radius: var(--r-small); }
.swatch code { font-size: 11px; }
.swatch-bg i { background: var(--bg); }
.swatch-panel i { background: var(--bg-panel); }
.swatch-ink i { background: var(--bg-ink); }
.swatch-border i { background: var(--border); }
.swatch-accent i { background: var(--accent); }
.swatch-accent-dark i { background: var(--accent-dark); }
.swatch-text i { background: var(--text); }
.swatch-muted i { background: var(--text-muted); }
.swatch-success i { background: var(--success); }
.swatch-warn i { background: var(--warn); }
.swatch-error i { background: var(--error); }
.swatch-ink-text i { background: var(--ink-text); }
.swatch-ink-muted i { background: var(--ink-muted); }
.swatch-ink-dim i { background: var(--ink-dim); }
.swatch-ink-line i { background: var(--ink-line); }
.swatch-ink-dot i { background: var(--ink-dot); }
.swatch-rail-ink i { background: var(--rail-ink); }
.swatch-wall-top i { background: var(--wall-top); }
.swatch-wall-bottom i { background: var(--wall-bottom); }
.swatch-wall-glow i { background: var(--wall-glow); }
.swatch-wall-shade i { background: var(--wall-shade); }
.swatch-walnut-edge i { background: var(--walnut-edge); }
.swatch-walnut i { background: var(--walnut); }
.swatch-walnut-deep i { background: var(--walnut-deep); }
.swatch-walnut-sheen i { background: var(--walnut-sheen); }
.swatch-alu-light i { background: var(--alu-light); }
.swatch-alu i { background: var(--alu); }
.swatch-alu-dark i { background: var(--alu-dark); }
.swatch-alu-edge i { background: var(--alu-edge); }
.swatch-screen-a i { background: var(--screen-a); }
.swatch-screen-b i { background: var(--screen-b); }
.swatch-screen-rim i { background: var(--screen-rim); }
.swatch-peach i { background: var(--plane-peach); }
.swatch-apricot i { background: var(--plane-apricot); }
.swatch-cream i { background: var(--plane-cream); }
.swatch-sand i { background: var(--plane-sand); }
.swatch-contact i { background: var(--contact-shadow); }
.swatch-success-halo i { background: var(--success-halo); }
.swatch-accent-halo i { background: var(--accent-halo); }
.swatch-veil i { background: var(--veil); }
.swatch-clear i { background: var(--clear); }
.preview-shot-placeholder {
  width: 100%; aspect-ratio: 750 / 1334; display: grid; place-items: center;
  padding: 20px; text-align: center; border-radius: var(--r-shot);
  background: linear-gradient(160deg,var(--wall-top),var(--plane-sand)); color: var(--text-muted);
  font-size: var(--size-small);
}
.preview-type > * + * { margin-top: 24px; }
.preview-menu { display: none; }
.preview-languages { position: relative; }
.preview-languages > summary { list-style: none; cursor: pointer; }
.preview-languages > summary::-webkit-details-marker { display: none; }
.preview-footer-nav { display: flex; flex-wrap: wrap; gap: 8px 24px; }
.preview-footer-nav a { min-height: 44px; display: inline-flex; align-items: center; }
.preview-fab { position: static; width: fit-content; margin-top: 24px; }
@media (max-width:1280px) {
  .preview-menu { display: block; }
  .preview-menu > summary { list-style: none; }
  .preview-menu > summary::-webkit-details-marker { display: none; }
  .preview-menu nav { position: absolute; left: 0; right: 0; top: 100%; padding: 20px; background: var(--bg-panel); color: var(--text); border-bottom: 1px solid var(--border); max-height: calc(100dvh - var(--nav-h)); overflow-y: auto; z-index: 6; }
  .preview-menu nav a { display: flex; align-items: center; width: 100%; min-height: 44px; padding: 12px; }
}
@media (max-width:768px) {
  .feature-tabs { grid-template-columns: minmax(0,1fr); gap: 0; }
  .feature-tabs .tab-list { display: none; }
  .accordion-trigger {
    display: flex; align-items: center; justify-content: space-between; gap: 16px;
    width: 100%; min-height: 68px; padding: 18px 12px; border: 0; border-bottom: 1px solid var(--border);
    background: var(--clear); color: var(--text); font: var(--weight-regular) 24px/1.35 var(--font-display); text-align: left;
  }
  .accordion-trigger::after { content: "+"; flex-shrink: 0; }
  .accordion-trigger[aria-expanded="true"]::after { content: "−"; color: var(--accent-dark); }
  .tab-panel { margin-block: 16px 24px; }
  .feature-copy { padding: 24px; }
  .feature-material { padding: 24px 16px; font-size: 12px; }
  .shot-row { flex-direction: column; align-items: center; }
}
@media (max-width:640px) {
  .fact-row { flex-direction: row; justify-content: center; gap: 8px; }
  .fact-pill { padding: 5px 9px; font-size: 11px; }
  .device-card { gap: 16px; }
  .device-card > svg { width: 34px; height: 48px; }
  .device-card h3 { font-size: 26px; }
  .dl-fab { right: 20px; bottom: max(20px,env(safe-area-inset-bottom)); }
  .store-endcard { padding: 24px; }
  .faq-item summary { padding-inline: 20px; }
  .faq-answer { padding-inline: 20px; }
}