/* The activation-key hero remains static, including its glass and particles. */
.hero { position: relative; overflow-x: clip; max-width: 100%; padding: 28px 40px 72px; }
.hero-copy { position: relative; z-index: 3; max-width: 920px; margin: 0 auto; text-align: center; }
.tag, .badge { display: inline-flex; align-items: center; gap: 8px; max-width: 100%; overflow: hidden; min-height: 26px; padding: 2px 12px; border-radius: var(--r-pill); background: color-mix(in srgb, var(--panel) 72%, transparent); box-shadow: var(--hl-edge), 0 0 0 1px color-mix(in srgb, var(--border) 60%, transparent); font-family: var(--font-mono); font-size: var(--size-micro); letter-spacing: .01em; color: var(--muted); overflow-wrap: anywhere; }
.hero h1 { margin: 18px 0 16px; font-family: var(--font-display); font-weight: var(--weight-bold); font-size: 64px; line-height: 1.04; letter-spacing: -.03em; color: var(--text); }
.hero h1 .hl { color: var(--accent-dark); }
.lede { margin: 0 auto 24px; max-width: 900px; font-size: var(--size-lede); line-height: 1.5; color: var(--muted); }
.lede strong { color: var(--text); font-weight: var(--weight-semibold); }
.trust { display: flex; justify-content: center; flex-wrap: wrap; gap: 6px 22px; margin: 16px 0 0; padding: 0; list-style: none; font-size: 13.5px; line-height: 20px; color: var(--muted); }
.trust li { display: inline-flex; align-items: center; gap: 8px; white-space: nowrap; }
.wall { display: grid; gap: 10px; justify-items: center; margin: 20px auto 0; }
.wall-row { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px 28px; margin: 0; padding: 0; list-style: none; font-size: var(--size-small); line-height: 20px; color: var(--muted); }
.wall-row li { display: inline-flex; align-items: center; gap: 8px; white-space: nowrap; }
.wall-row svg { width: 18px; height: 18px; flex: none; }
.wall-plat svg { fill: currentColor; }
.wall-flags svg { opacity: .85; }
.f-red { fill: var(--flag-red); }
.f-white { fill: var(--flag-white); }
.f-navy { fill: var(--flag-navy); }
.f-ring { fill: none; stroke: var(--border); stroke-width: 1; }
.stage { position: relative; max-width: 1200px; height: 366px; margin: 24px auto 0; }
.key-glow { position: absolute; left: 14%; right: 14%; top: 44%; height: 78%; border-radius: var(--r-round); background: radial-gradient(closest-side, color-mix(in srgb, var(--accent) 14%, transparent), transparent); filter: blur(36px); z-index: 0; }
.key-glow::after { content: ""; position: absolute; left: 22%; right: 22%; top: 30%; bottom: 30%; border-radius: var(--r-round); background: radial-gradient(closest-side, color-mix(in srgb, var(--accent-dark) 12%, transparent), transparent); }
.key { position: relative; z-index: 1; width: 78%; height: 100%; margin: 0 auto; transform: perspective(1600px) rotateX(8deg); transform-origin: 50% 60%; }
.key-bloom { position: absolute; left: 5%; right: 8%; top: 0; height: 34px; border-radius: var(--r-pill); background: var(--white); filter: blur(14px); opacity: .75; }
.key-shell { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; }
.st-t0, .st-t1 { stop-color: var(--white); }
.st-t2 { stop-color: color-mix(in srgb, var(--accent) 32%, var(--white)); }
.st-s0 { stop-color: color-mix(in srgb, var(--accent) 74%, var(--white)); }
.st-s1 { stop-color: color-mix(in srgb, var(--accent) 48%, var(--accent-dark)); }
.st-s2 { stop-color: var(--accent-dark); }
.k-top { fill: url(#g-top); stroke: url(#g-top); stroke-width: 10; stroke-linejoin: round; }
.k-side { fill: url(#g-side); }
.k-hl { fill: none; stroke: var(--white); stroke-width: 1.2; stroke-linecap: round; }
.k-edge { fill: none; stroke: color-mix(in srgb, var(--accent) 35%, var(--white)); stroke-width: 1.4; opacity: .9; }
.key-front { position: absolute; left: 0; right: 3.2%; top: 36px; bottom: 0; overflow: hidden; border-radius: var(--r-tick) var(--r-tick) var(--r-lg) var(--r-lg); background: linear-gradient(172deg, color-mix(in srgb, var(--accent) 30%, var(--glass-white)) 0%, color-mix(in srgb, var(--accent) 20%, var(--glass-white)) 46%, color-mix(in srgb, var(--accent-dark) 18%, var(--glass-white)) 100%); -webkit-backdrop-filter: blur(18px) saturate(1.3); backdrop-filter: blur(18px) saturate(1.3); box-shadow: inset 1px 0 0 var(--white-90), inset 0 1px 0 var(--white-95), inset 0 -26px 44px -24px color-mix(in srgb, var(--accent-dark) 34%, transparent), var(--shadow-key); }
.key-front::before { content: ""; position: absolute; left: 10px; top: 14px; bottom: 30px; width: 3px; border-radius: var(--r-pill); background: linear-gradient(180deg, var(--white-85), var(--transparent)); }
.speck { position: absolute; border-radius: var(--r-round); background: radial-gradient(circle, color-mix(in srgb, var(--accent) 70%, var(--white)) 0, color-mix(in srgb, var(--accent) 38%, transparent) 46%, transparent 72%); filter: blur(3px); pointer-events: none; }
.speck.s1 { left: 22px; top: 52px; width: 30px; height: 24px; opacity: .75; }
.speck.s2 { left: 30px; top: 190px; width: 18px; height: 18px; opacity: .55; }
.speck.s3 { left: 38%; bottom: 12px; width: 42px; height: 30px; opacity: .6; }
.speck.s4 { right: 20px; top: 108px; width: 24px; height: 22px; opacity: .6; }
.speck.s5 { right: 12%; bottom: 18px; width: 20px; height: 16px; opacity: .45; }
.speck.o1 { left: 4%; top: 58%; width: 14px; height: 14px; opacity: .35; z-index: 0; }
.speck.o2 { right: 3%; top: 4%; width: 12px; height: 12px; opacity: .3; z-index: 0; }
.speck.o3 { left: 46%; top: -16px; width: 10px; height: 10px; opacity: .28; z-index: 0; }
.panel { position: absolute; left: 64px; right: 64px; top: 18px; overflow: hidden; border-radius: var(--r-md); background: color-mix(in srgb, var(--panel) 86%, transparent); -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px); box-shadow: var(--hl-edge), 0 20px 40px -20px color-mix(in srgb, var(--accent-dark) 34%, transparent); color: var(--text); }
.panel-bar { height: 38px; display: flex; align-items: center; gap: 9px; padding: 0 14px; border-bottom: 1px solid color-mix(in srgb, var(--border) 70%, transparent); background: linear-gradient(180deg, var(--white-70), var(--transparent)); }
.panel-bar svg, .panel-bar img { width: 18px; height: 18px; flex: none; }
.panel-title { font-size: 13px; font-weight: var(--weight-semibold); letter-spacing: -.01em; }
.panel-state { display: inline-flex; align-items: center; gap: 6px; font-size: 12.5px; font-weight: var(--weight-semibold); color: var(--accent-dark); }
.panel-state .dot { width: 6px; height: 6px; }
.win-ctl { display: flex; gap: 6px; margin-left: auto; }
.win-ctl span { width: 10px; height: 10px; border-radius: var(--r-tick); background: var(--groove); box-shadow: inset 0 0 0 1px var(--border); }
.panel-body { display: grid; grid-template-columns: 1.05fr 1fr; gap: 14px; padding: 12px 14px; }
.routes, .opts { margin: 0; padding: 0; list-style: none; display: grid; }
.routes { gap: 3px; }
.route { position: relative; height: 30px; display: flex; align-items: center; gap: 9px; padding: 0 8px 0 12px; border-radius: var(--r-xs); font-size: 13px; }
.route svg { width: 16px; height: 16px; flex: none; }
.route-type { margin-left: auto; padding: 2px 8px; border-radius: var(--r-pill); background: color-mix(in srgb, var(--groove) 72%, transparent); font-family: var(--font-mono); font-size: 11px; line-height: 16px; color: var(--muted); white-space: nowrap; }
.route.is-on { font-weight: var(--weight-semibold); background: color-mix(in srgb, var(--accent) 14%, var(--panel)); box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--accent-dark) 16%, transparent); }
.route.is-on::before { content: ""; position: absolute; left: 0; top: 6px; bottom: 6px; width: 3px; border-radius: var(--r-pill); background: var(--accent-dark); }
.route.is-on .route-type { background: var(--accent-dark); color: var(--panel); }
.opts { gap: 6px; }
.opt { height: 36px; display: flex; align-items: center; gap: 10px; padding: 0 10px 0 6px; border-radius: var(--r-sm); background: color-mix(in srgb, var(--groove) 52%, transparent); box-shadow: inset 0 1px 1px color-mix(in srgb, var(--text) 5%, transparent); }
.opt-ico { width: 24px; height: 24px; flex: none; display: grid; place-items: center; border-radius: var(--r-xs); background: var(--panel); color: var(--accent-dark); box-shadow: var(--hl-edge), 0 2px 6px -2px color-mix(in srgb, var(--text) 18%, transparent); }
.opt-ico svg { width: 14px; height: 14px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.opt-name { font-size: 13px; font-weight: var(--weight-medium); white-space: nowrap; }
.opt-val { margin-left: auto; display: inline-flex; align-items: center; gap: 8px; font-family: var(--font-mono); font-size: 11.5px; color: var(--muted); white-space: nowrap; }
.opt-val--ink { color: var(--text); font-weight: var(--weight-semibold); }
.opt-val .dot { width: 6px; height: 6px; }
.switch { position: relative; width: 30px; height: 18px; flex: none; border-radius: var(--r-pill); background: var(--accent-dark); box-shadow: inset 0 1px 2px color-mix(in srgb, var(--text) 25%, transparent); }
.switch::after { content: ""; position: absolute; top: 2px; right: 2px; width: 14px; height: 14px; border-radius: var(--r-round); background: var(--panel); box-shadow: 0 1px 3px color-mix(in srgb, var(--text) 30%, transparent); }
.panel-foot { min-height: 32px; display: flex; align-items: center; gap: 8px; padding: 0 14px; border-top: 1px solid color-mix(in srgb, var(--border) 70%, transparent); background: color-mix(in srgb, var(--groove) 40%, transparent); font-family: var(--font-mono); font-size: 11.5px; color: var(--muted); line-height: 1.5; }
.panel-foot svg { width: 12px; height: 12px; flex: none; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.chip { position: absolute; z-index: 4; display: flex; align-items: center; gap: 10px; padding: 8px 16px 8px 8px; border-radius: var(--r-pill); background: var(--panel); box-shadow: var(--hl-edge), var(--shadow-tint); font-size: var(--size-small); font-weight: var(--weight-semibold); line-height: 20px; color: var(--text); white-space: nowrap; }
.chip-ico { width: 28px; height: 28px; flex: none; display: grid; place-items: center; border-radius: var(--r-round); background: color-mix(in srgb, var(--accent) 22%, var(--panel)); color: var(--accent-dark); }
.chip-ico svg { width: 15px; height: 15px; fill: none; stroke: currentColor; stroke-width: 1.9; stroke-linecap: round; stroke-linejoin: round; }
.chip--refund { right: calc(89% - 56px); top: -14px; }
.chip--signup { left: calc(89% - 86px); top: 148px; gap: 12px; padding: 12px 20px 12px 12px; border-radius: var(--r-lg); box-shadow: var(--hl-edge), var(--shadow-tint-deep); }
.chip--signup .chip-ico { width: 34px; height: 34px; }
.chip-stack { display: grid; gap: 2px; }
.chip-sub { font-size: 12.5px; font-weight: var(--weight-regular); color: var(--muted); }
.chip--pay { right: calc(89% - 40px); top: 266px; font-size: 13.5px; }

.tabs { min-width: 0; }
[role="tablist"] { display: flex; align-items: center; gap: 8px; padding: 6px; overflow-x: auto; max-width: 100%; border-radius: var(--r-pill); background: var(--groove); }
[role="tab"] { display: inline-flex; align-items: center; justify-content: center; gap: 10px; flex-shrink: 0; min-height: 44px; padding: 10px 20px; border: 0; border-radius: var(--r-pill); color: var(--muted); background: var(--transparent); white-space: nowrap; }
[role="tab"][aria-selected="true"] { color: var(--text); background: var(--panel); box-shadow: var(--hl-edge), var(--shadow-nav); }
[role="tabpanel"] { min-width: 0; margin-top: 24px; }
.feature-desk { display: grid; grid-template-columns: minmax(260px, .85fr) minmax(0, 1.3fr); gap: 64px; }
.feature-index[role="tablist"] { display: flex; flex-direction: column; align-items: stretch; gap: 4px; padding: 0; background: var(--transparent); border-radius: var(--r-tick); overflow: visible; }
.feature-index [role="tab"] { position: relative; justify-content: flex-start; text-align: left; white-space: normal; border-radius: var(--r-tick); padding: 18px 20px; background: var(--transparent); box-shadow: none; }
.feature-index [role="tab"][aria-selected="true"] { box-shadow: inset 3px 0 0 var(--accent-dark); }
.feature-index [aria-selected="true"] .dot { background: var(--accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 18%, transparent); }
.feature-label { display: grid; gap: 4px; }
.feature-title { font-family: var(--font-display); font-size: 22px; font-weight: var(--weight-semibold); }
.feature-note { font-family: var(--font-mono); font-size: var(--size-micro); color: var(--muted); }
.feature-detail[role="tabpanel"] { padding: 40px; margin-top: 0; background: var(--panel); border-radius: var(--r-lg); box-shadow: var(--hl-edge), var(--shadow-tint); }
.fact-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.fact-pill { display: inline-flex; align-items: center; gap: 8px; max-width: 100%; padding: 6px 12px; background: var(--bg); color: var(--muted); border-radius: var(--r-pill); font-family: var(--font-mono); font-size: var(--size-micro); overflow-wrap: anywhere; }
.toc-tabs { position: sticky; top: 12px; z-index: 15; display: flex; align-items: center; gap: 8px; max-width: 100%; overflow-x: auto; overscroll-behavior-x: contain; padding: 8px; margin-bottom: 40px; border-radius: var(--r-pill); background: var(--panel); box-shadow: var(--hl-edge), var(--shadow-nav); }
.toc-tabs a { display: inline-flex; align-items: center; justify-content: center; flex: none; min-height: 40px; padding: 8px 18px; border-radius: var(--r-pill); color: var(--muted); text-decoration: none; white-space: nowrap; }
.toc-tabs a.is-current { color: var(--text); background: var(--groove); font-weight: var(--weight-semibold); }
.toc-tabs.toc-static { position: static; }
.faq-list { display: grid; gap: 12px; }
.faq-item { min-width: 0; border-radius: var(--r-lg); background: var(--panel); box-shadow: var(--hl-edge); }
.faq-item summary { position: relative; cursor: pointer; list-style: none; padding: 22px 56px 22px 24px; font-weight: var(--weight-semibold); }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; position: absolute; right: 24px; top: 22px; color: var(--accent-dark); }
.faq-item[open] summary::after { content: "−"; }
.faq-answer { padding: 0 24px 24px; color: var(--muted); }
.faq-answer p:last-child { margin-bottom: 0; }

.plan-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.plan-card { position: relative; display: flex; flex-direction: column; min-width: 0; padding: 32px; border-radius: var(--r-lg); background: var(--panel); box-shadow: var(--hl-edge), var(--shadow-tint); }
.plan-card.is-featured { background: color-mix(in srgb, var(--accent-wash) 42%, var(--panel)); box-shadow: var(--hl-edge), 0 0 0 1px var(--accent-dark), var(--shadow-tint); }
.plan-card.is-current { box-shadow: var(--hl-edge), 0 0 0 2px var(--accent-dark), var(--shadow-tint); }
.plan-badge { align-self: flex-start; max-width: 100%; padding: 4px 12px; margin-bottom: 16px; color: var(--panel); background: var(--accent-dark); border-radius: var(--r-pill); font-size: var(--size-micro); overflow-wrap: anywhere; }
.plan-price { margin: 12px 0 16px; font-family: var(--font-display); font-size: 40px; font-weight: var(--weight-bold); line-height: 1.2; font-variant-numeric: tabular-nums; }
.plan-price small { font-size: var(--size-small); font-weight: var(--weight-regular); color: var(--muted); }
.plan-facts { padding-left: 20px; margin: 0 0 24px; color: var(--muted); font-size: var(--size-small); }
.plan-card .btn { margin-top: auto; width: 100%; }
.plan-cycle { color: var(--muted); font-family: var(--font-mono); font-size: var(--size-micro); }
.table-scroll { overflow-x: auto; max-width: 100%; min-width: 0; -webkit-overflow-scrolling: touch; border-radius: var(--r-lg); background: var(--panel); box-shadow: var(--hl-edge); }
.data-table { width: 100%; min-width: 660px; border-collapse: collapse; font-size: var(--size-small); text-align: left; }
.data-table caption { padding: 20px 24px; text-align: left; color: var(--text); font-weight: var(--weight-semibold); }
.data-table th, .data-table td { padding: 16px 24px; border-bottom: 1px solid var(--border); word-break: keep-all; }
.table-scroll th, .data-table th { color: var(--text); background: var(--groove); font-weight: var(--weight-semibold); white-space: nowrap; }
.data-table td:first-child { color: var(--text); font-weight: var(--weight-medium); }
.data-table .region-row th { color: var(--accent-dark); background: var(--accent-wash); }
.data-table tr:last-child td { border-bottom: 0; }
.flag-inline { display: inline-flex; align-items: center; gap: 8px; white-space: nowrap; }
.flag-inline svg { width: 20px; height: 20px; overflow: hidden; flex: none; }
.prose > .data-table { display: block; overflow-x: auto; -webkit-overflow-scrolling: touch; max-width: 100%; min-width: 0; }

.platform-grid { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 16px; }
.platform-card { display: flex; flex-direction: column; align-items: flex-start; gap: 16px; min-width: 0; padding: 24px; border-radius: var(--r-lg); background: var(--panel); box-shadow: var(--hl-edge), var(--shadow-tint); }
.platform-card > svg { width: 32px; height: 32px; fill: currentColor; color: var(--muted); }
.platform-card h3 { font-size: var(--size-body); margin: 0; }
.platform-card .btn { min-height: 44px; height: auto; padding: 10px 14px; font-size: var(--size-micro); width: 100%; }
.article-card { display: flex; flex-direction: column; min-width: 0; padding: 28px; background: var(--panel); border-radius: var(--r-lg); box-shadow: var(--hl-edge), var(--shadow-tint); }
.article-meta { display: flex; align-items: center; flex-wrap: wrap; gap: 12px; margin-bottom: 20px; color: var(--muted); font-family: var(--font-mono); font-size: var(--size-micro); }
.article-card h3 a { color: var(--text); text-decoration: none; }
.article-card h3 a:hover { color: var(--accent-dark); }
.article-card p { font-size: var(--size-small); color: var(--muted); }
.article-link { display: inline-flex; align-items: center; min-height: 32px; margin-top: auto; }
.article-window { overflow: hidden; border-radius: var(--r-lg); background: var(--panel); box-shadow: var(--hl-edge), var(--shadow-tint); }
.article-window-bar { display: flex; align-items: center; gap: 12px; padding: 16px 24px; background: var(--groove); font-family: var(--font-mono); font-size: var(--size-micro); color: var(--muted); }
.article-window-bar::before { content: ""; width: 44px; height: 8px; flex: none; background: radial-gradient(circle at 4px 4px, var(--error) 0 4px, transparent 4.2px), radial-gradient(circle at 22px 4px, var(--warn) 0 4px, transparent 4.2px), radial-gradient(circle at 40px 4px, var(--success) 0 4px, transparent 4.2px); }
.article-window-body { padding: 40px; }
.callout { padding: 24px 28px; margin: 24px 0; border-left: 3px solid var(--accent-dark); border-radius: var(--r-tick) var(--r-lg) var(--r-lg) var(--r-tick); background: var(--accent-wash); color: var(--text); }
.callout p:last-child { margin-bottom: 0; }
.promo-block { display: flex; align-items: center; justify-content: space-between; gap: 32px; padding: 32px; margin-top: 48px; background: var(--panel); border-radius: var(--r-lg); box-shadow: var(--hl-edge), var(--shadow-tint); }
.promo-copy { min-width: 0; }
.promo-copy p { margin: 10px 0 0; color: var(--muted); }
.promo-brand { font-family: var(--font-display); font-size: var(--size-h3); font-weight: var(--weight-bold); }
.promo-block .btn { flex-shrink: 0; white-space: nowrap; }

.preview-section { border-top: 1px solid var(--border); }
.swatch-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.swatch { overflow: hidden; min-width: 0; border-radius: var(--r-md); background: var(--panel); box-shadow: var(--hl-edge); }
.swatch-color { height: 72px; box-shadow: inset 0 0 0 1px var(--border); }
.swatch-label { padding: 12px; font-family: var(--font-mono); font-size: var(--size-micro); overflow-wrap: anywhere; }
.sw-bg { background: var(--bg); }
.sw-top { background: var(--bg-top); }
.sw-bottom { background: var(--bg-bottom); }
.sw-panel { background: var(--panel); }
.sw-groove { background: var(--groove); }
.sw-border { background: var(--border); }
.sw-accent { background: var(--accent); }
.sw-dark { background: var(--accent-dark); }
.sw-wash { background: var(--accent-wash); }
.sw-text { background: var(--text); }
.sw-muted { background: var(--muted); }
.sw-success { background: var(--success); }
.sw-warn { background: var(--warn); }
.sw-error { background: var(--error); }
.sw-white { background: var(--white); }
.sw-red { background: var(--flag-red); }
.sw-navy { background: var(--flag-navy); }
.sw-glass { background: var(--glass-white); }
.type-display { font-family: var(--font-display); font-size: var(--size-h1); font-weight: var(--weight-bold); line-height: 1.1; letter-spacing: -.02em; }
.sample-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 16px; }
.sample-stack { display: grid; gap: 24px; }
.preview-note { margin-top: 24px; font-size: var(--size-small); color: var(--muted); }

@media (max-width: 1080px) {
  .key { width: 86%; }
  .panel { left: 44px; right: 44px; }
  .chip--refund { right: auto; left: 0; }
  .chip--signup { left: auto; right: 0; }
  .chip--pay { right: auto; left: 0; }
  .platform-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .feature-desk { gap: 32px; }
}
@media (max-width: 768px) {
  .hero { padding: 24px 16px 48px; }
  .hero h1 { font-size: 40px; line-height: 1.1; margin: 16px 0 12px; }
  .lede { font-size: 16px; margin-bottom: 20px; }
  .trust { gap: 6px 16px; font-size: 13px; }
  .wall-row { gap: 8px 18px; font-size: 13px; }
  .chip { display: none; }
  .stage { height: auto; margin-top: 28px; }
  .key { width: 100%; height: auto; transform: none; }
  .key-shell, .key-bloom { display: none; }
  .key-front { position: relative; left: auto; right: auto; top: auto; bottom: auto; padding: 14px; border-radius: var(--r-lg); }
  .panel { position: relative; left: auto; right: auto; top: auto; }
  .panel-body { grid-template-columns: 1fr; }
  .panel-foot { height: auto; padding: 8px 14px; white-space: normal; line-height: 1.5; }
  .feature-desk { grid-template-columns: 1fr; gap: 24px; }
  .feature-index[role="tablist"] { flex-direction: row; overflow-x: auto; border-radius: var(--r-pill); }
  .feature-index [role="tab"] { white-space: nowrap; border-radius: var(--r-pill); padding: 12px 18px; }
  .feature-index [role="tab"][aria-selected="true"] { box-shadow: inset 0 0 0 1px var(--accent-dark); background: var(--panel); }
  .feature-title { font-size: var(--size-body); }
  .feature-note { display: none; }
  .feature-detail[role="tabpanel"] { padding: 24px; }
  .plan-grid { grid-template-columns: 1fr; }
  .swatch-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .promo-block { flex-direction: column; align-items: flex-start; padding: 24px; }
  .article-window-body { padding: 24px; }
}
@media (max-width: 640px) {
  .platform-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .platform-card { padding: 20px 16px; }
  .swatch-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .plan-card { padding: 24px; }
  .opt { gap: 6px; padding-right: 8px; }
  .opt-val { font-size: 10px; gap: 5px; }
  .opt-name { font-size: 12px; }
  .panel-bar { padding-inline: 10px; gap: 6px; }
  .win-ctl { gap: 3px; }
  .win-ctl span { width: 6px; height: 6px; }
}