/* BatteryReviewForge — one type scale, one spacing system, readable at zoom.
   Maintainer reference: DESIGN_SYSTEM.md. Keep homepage brand changes separate. */
:root {
  --ink: #1d1d1f;
  --muted: #51545a;
  --quiet: #6a6d73;
  --blue: #075fb6;
  --blue-hover: #00498e;
  --teal: #236e69;
  --rose: #a3415d;
  --line: #d9dce1;
  --soft: #f5f5f7;
  --paper: #fff;
  --max: 1160px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 86px; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 400 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei UI", "Noto Sans CJK SC", Arial, sans-serif; }
a { color: inherit; text-decoration: none; }
a:hover { color: var(--blue-hover); }
button, input, textarea { font: inherit; }
button { cursor: pointer; }
img, svg { display: block; max-width: 100%; }
[hidden] { display: none !important; }
:focus-visible { outline: 3px solid #066abb; outline-offset: 4px; }
.wrap { width: min(calc(100% - 48px), var(--max)); margin-inline: auto; }
.skip { position: absolute; left: -100vw; top: 8px; z-index: 50; padding: 10px 15px; background: #fff; border: 2px solid var(--blue); }
.skip:focus { left: 12px; }

/* Navigation */
.topbar { position: sticky; top: 0; z-index: 30; border-bottom: 1px solid #ebebed; background: #fff; }
.nav { min-height: 68px; display: flex; align-items: center; gap: 34px; }
.brand { font-size: 18px; font-weight: 700; letter-spacing: -.035em; white-space: nowrap; }
.navlinks { flex: 1; display: flex; align-items: center; justify-content: center; gap: clamp(14px,2.5vw,33px); }
.navlinks a { font-size: 15px; font-weight: 600; white-space: nowrap; min-height: 44px; display: inline-flex; align-items: center; }
.navlinks a:hover { color: var(--blue); }
.menu-toggle, .search-trigger { min-height: 44px; border: 0; background: none; color: var(--ink); font-weight: 600; }
.menu-toggle { display: none; }
.search-trigger { display: inline-flex; align-items: center; gap: 8px; font-size: 15px; white-space: nowrap; }
.search-trigger span { font-size: 22px; line-height: 1; }

/* Type and controls */
.eyebrow { margin: 0; color: var(--blue); font-size: 15px; font-weight: 700; letter-spacing: .015em; }
h1, h2, h3 { line-height: 1.18; letter-spacing: -.025em; }
h1, h2 { font-weight: 700; }
h3 { font-weight: 650; }
.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 11px 26px; background: var(--blue); border: 1px solid var(--blue); border-radius: 999px; color: #fff; font-size: 16px; font-weight: 650; text-align: center; }
.btn:hover { background: var(--blue-hover); border-color: var(--blue-hover); color: #fff; }
.btn.secondary { background: transparent; color: var(--blue); }
.btn.secondary:hover { background: #eaf2fa; color: var(--blue-hover); }
.quiet-link, .text-link { display: inline-flex; align-items: center; gap: 7px; color: var(--blue); font-size: 16px; font-weight: 650; line-height: 1.4; min-height: 44px; }
.quiet-link:hover, .text-link:hover { color: var(--blue-hover); text-decoration: underline; text-underline-offset: 3px; }
.quiet-link span, .text-link span { font-size: 20px; }
.hero-actions { display: flex; align-items: center; justify-content: center; flex-wrap: wrap; gap: 14px 25px; }
.small { font-size: 14px; color: var(--muted); }
.pill { display: inline-flex; align-items: center; padding: 4px 11px; border-radius: 99px; background: #e8f2ef; color: #245a4d; font-size: 13px; font-weight: 700; }
.notice { margin-block: 20px; padding: 18px 20px; border-left: 3px solid var(--blue); background: #f0f6fc; color: #30425a; }

/* Home: headline first, one real figure, then tasks. */
.hero-section { overflow: clip; }
.hero { padding: clamp(30px,3.5vw,48px) 0 62px; text-align: center; }
.hero-copy { max-width: 930px; margin: auto; }
.hero h1 { margin: 10px 0 16px; font-size: clamp(44px,5.2vw,68px); line-height: 1.1; letter-spacing: -.047em; }
.hero-lead { max-width: 725px; margin: 0 auto; color: #41434a; font-size: clamp(18px,1.8vw,21px); line-height: 1.52; }
.hero-lead strong, .hero-lead span { display: block; }
.hero-lead strong { margin-bottom: 5px; color: var(--ink); font-weight: 650; }
.hero-lead span { max-width: 700px; margin: auto; }
.hero-actions { margin-top: 20px; }
.hero-meta { margin: 13px 0 0; color: var(--quiet); font-size: 14px; }
.hero-figure { margin: 28px 0 0; padding: clamp(14px,3vw,38px); border-radius: 22px; background: var(--soft); text-align: left; }
.hero-figure:has(img[src*="style_presets"]) { padding: clamp(10px,2vw,24px); background: #f4f5f6; }
.hero-figure > a { display: block; overflow: hidden; background: #fff; border: 1px solid #e7e7ea; border-radius: 6px; }
.hero-figure > .hero-media-mobile { display: none; }
.hero-figure img { display: block; width: 100%; height: auto; }
.hero-figure figcaption { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 4px 20px; margin-top: 17px; color: var(--muted); font-size: 14px; }
.hero-figure figcaption span:first-child { color: var(--ink); font-weight: 650; }
.hero-figure figcaption a { color: var(--blue); text-decoration: underline; text-underline-offset: 3px; }

.section { padding: clamp(66px,7vw,98px) 0; }
.section.soft { background: var(--soft); }
.section-head { max-width: 790px; margin: 0 auto 39px; text-align: center; }
.section h2, .page-head h1 { margin: 13px 0 0; font-size: clamp(34px,4.3vw,52px); }
.section-intro { max-width: 680px; margin: 18px auto 0; color: var(--muted); font-size: 18px; }
.feature-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 17px; }
.feature-item { min-height: 270px; display: flex; flex-direction: column; align-items: flex-start; padding: 31px; border-radius: 18px; background: var(--soft); }
.feature-number { color: var(--blue); font-size: 16px; font-weight: 700; font-variant-numeric: tabular-nums; }
.feature-item h3 { margin: 24px 0 10px; font-size: 27px; }
.feature-item p { margin: 0 0 14px; color: var(--muted); font-size: 17px; }
.feature-item a { margin-top: auto; }
.home-showcase { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 24px; }
.home-pick-integrated_study { grid-column: 1 / -1; }
.home-pick .gallery-image { min-height: 330px; }
.home-pick-integrated_study .gallery-image { min-height: 0; }
.home-pick .gallery-caption p { display: none; }
.section-action { margin: 30px 0 0; text-align: center; }
.start-invitation { display: grid; grid-template-columns: minmax(0,1.05fr) minmax(280px,.75fr); align-items: center; gap: clamp(48px,8vw,120px); }
.start-invitation h2 { max-width: 550px; }
.start-invitation p:not(.eyebrow) { max-width: 570px; color: var(--muted); font-size: 19px; }
.start-invitation .btn { margin-top: 15px; }
.simple-steps { counter-reset: item; margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.simple-steps li { display: grid; grid-template-columns: 1fr 1.25fr; gap: 15px; align-items: center; padding: 24px 0; border-bottom: 1px solid var(--line); }
.simple-steps strong { font-size: 22px; }
.simple-steps span { color: var(--muted); }
.trust-copy, .closing { max-width: 790px; text-align: center; }
.trust-copy p:not(.eyebrow), .closing p:not(.eyebrow) { color: var(--muted); font-size: 19px; }
.closing .hero-actions { margin-top: 30px; }
.closing h2 { line-height: 1.18; }

/* Shared gallery and content pages */
.gallery-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 28px; }
.gallery-page-head { padding: 40px 0 25px; }
.gallery-page-head h1 { max-width: 960px; }
.gallery-page-head p { max-width: 860px; }
.style-choices { padding: 29px 0 52px; }
.style-choices .section-intro { max-width: none; margin: 6px 0 24px; text-align: left; }
.style-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 16px; }
.style-card { min-width: 0; padding: 12px 12px 17px; border: 1px solid var(--line); border-radius: 12px; background: #fff; }
.style-card > a:first-child { display: block; overflow: hidden; border-radius: 5px; }
.style-card img { width: 100%; height: auto; }
.style-card h3 { margin: 12px 0 0; font-size: 20px; }
.style-card p { margin: 0; color: var(--muted); font-size: 14px; }
.style-card .text-link { margin-top: 8px; font-size: 14px; }
.style-choices > .wrap > .small { margin-top: 22px; }
.gallery-slot { min-width: 0; }
.gallery-slot-wide { grid-column: 1 / -1; }
.gallery-slot-wide .gallery-image { min-height: 0; }
.gallery-card { display: flex; flex-direction: column; height: 100%; min-width: 0; }
.gallery-card.wide { grid-column: span 2; }
.gallery-image { display: flex; align-items: center; justify-content: center; min-height: 310px; overflow: hidden; padding: 13px; border: 1px solid #e5e5e8; border-radius: 12px; background: #fff; }
.gallery-image:hover { border-color: #a9c5df; }
.gallery-image img { width: 100%; height: auto; object-fit: contain; }
.gallery-caption { display: flex; justify-content: space-between; gap: 15px; align-items: flex-start; padding: 18px 0 5px; }
.gallery-caption h3 { margin: 8px 0 4px; font-size: 21px; }
.gallery-caption p { margin: 0; color: var(--muted); font-size: 15px; }
.gallery-links { display: flex; flex-wrap: wrap; gap: 5px 17px; font-size: 14px; color: var(--blue); font-weight: 650; }
.gallery-links a { min-height: 32px; display: inline-flex; align-items: center; }
.synthetic { color: var(--rose); font-size: 13px; font-weight: 700; }
.page-head { padding: 76px 0 52px; border-bottom: 1px solid var(--line); }
.page-head p { max-width: 760px; margin: 16px 0 0; color: var(--muted); font-size: 19px; }
.page-block { padding: 66px 0; }
.page-block.soft { background: var(--soft); }
.page-block h2 { margin: 0 0 17px; font-size: clamp(28px,3.1vw,38px); }
.prose { max-width: 790px; }
.prose p, .prose li { color: var(--muted); font-size: 17px; }
.prose li { margin-bottom: 9px; }
.row-list { border-top: 1px solid var(--line); }
.row { display: grid; grid-template-columns: minmax(180px,240px) minmax(0,1fr) auto; gap: 26px; align-items: center; min-height: 120px; padding: 27px 0; border-bottom: 1px solid var(--line); }
.row h3 { margin: 0; font-size: 21px; }
.row p { margin: 0; color: var(--muted); }
.row .text-link { white-space: nowrap; }

/* Model guidance stays separate from the homepage and readable without a cost table. */
.model-tiers { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 18px; }
.model-tiers article { padding: 28px; border: 1px solid var(--line); border-radius: 17px; background: #fff; }
.model-tiers h2 { margin: 18px 0 12px; font-size: 25px; }
.model-tiers p, .model-cost > p { color: var(--muted); font-size: 17px; }
.model-rule { max-width: 850px; margin: 28px 0 0; padding-left: 18px; border-left: 3px solid var(--teal); color: var(--ink); font-size: 18px; }
.model-cost { max-width: 900px; }
.model-cost > h2 { margin-top: 8px; }
.model-switches { display: flex; flex-wrap: wrap; gap: 10px; margin: 22px 0; }
.model-switches button { min-height: 44px; padding: 8px 18px; border: 1px solid #b5c8d8; border-radius: 999px; background: #fff; color: var(--ink); font-size: 16px; font-weight: 650; }
.model-switches button[aria-pressed="true"] { border-color: var(--blue); background: var(--blue); color: #fff; }
.cost-answer { padding: 27px; border: 1px solid var(--line); border-radius: 15px; background: #fff; }
.cost-answer[hidden] { display: none; }
.cost-answer > strong { font-size: 20px; }
.cost-answer p { color: var(--muted); }
.cost-results { border-top: 1px solid var(--line); }
.cost-row { display: grid; grid-template-columns: minmax(0,1fr) auto auto; align-items: center; gap: 20px; min-height: 62px; border-bottom: 1px solid var(--line); }
.cost-row strong { color: var(--ink); font-variant-numeric: tabular-nums; white-space: nowrap; }
.cost-row a { color: var(--blue); font-size: 14px; white-space: nowrap; }
.task-copy .first-task { margin-top: 9px; color: var(--ink); font-size: 15px; }
.contributor-list { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 19px; }
.contributor { padding: 17px 0; border-top: 1px solid var(--line); }
.contributor strong, .contributor small { display: block; }
.contributor small { color: var(--muted); }

/* Guided installation */
.start-head { padding: 40px 0 23px; border-bottom: 1px solid var(--line); }
.start-head h1 { margin: 6px 0 0; font-size: clamp(31px,3.5vw,43px); }
.wizard { max-width: 940px; margin: 0 auto; padding: 27px 0 88px; }
.progress { display: flex; flex-wrap: wrap; align-items: center; gap: 7px; margin: 0 0 42px; padding-bottom: 20px; border-bottom: 1px solid var(--line); }
.progress span[data-stage] { min-height: 44px; padding: 10px 13px; border-radius: 8px; color: var(--muted); font-size: 15px; }
.progress span[data-stage].current { background: #eaf2fa; color: var(--blue); font-weight: 700; }
.mobile-progress { display: none; }
.wizard h2 { margin: 0 0 8px; font-size: clamp(27px,3.2vw,35px); }
.wizard section > p { margin-top: 6px; color: var(--muted); }
.choices { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 13px; margin: 23px 0; }
.choice { min-height: 88px; padding: 20px; text-align: left; border: 1px solid var(--line); border-radius: 12px; background: #fff; color: var(--ink); font-size: 19px; font-weight: 650; }
.choice small { display: block; margin-top: 5px; color: var(--muted); font-size: 14px; font-weight: 400; }
.choice:hover, .choice.selected { border-color: var(--blue); background: #f2f7fc; }
.primary-client { grid-template-columns: 1fr; max-width: 590px; }
.other-clients { margin-top: 12px; }
.other-clients summary { color: var(--blue); }
.resume-choice { display: block; min-height: 48px; width: 100%; margin: 14px 0; padding: 12px 18px; text-align: left; border: 1px solid #90b4da; border-radius: 9px; background: #edf5fc; color: var(--ink); font-weight: 650; }
.task-hint { margin: 0 0 18px; padding: 10px 15px; border-left: 3px solid var(--blue); background: #f0f6fc; color: #30425a; }
.wizard-actions { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 14px; margin-top: 29px; }
.ghost { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 8px 12px; border: 0; border-radius: 8px; background: none; color: var(--blue); font-weight: 650; }
.ghost:hover { background: #eaf2fa; }
.install-steps { margin: 26px 0; padding-left: 30px; }
.install-steps li { margin: 0 0 13px; padding-left: 6px; font-size: 17px; }
.install-steps li::marker { color: var(--blue); font-weight: 700; }
.command { max-width: 100%; margin: 7px 0 4px; padding: 15px 18px; overflow-wrap: anywhere; border: 1px solid var(--line); border-radius: 8px; background: var(--soft); font: 15px/1.55 Consolas,"Cascadia Code",monospace; }
.manual-copy { display: block; width: 100%; min-height: 90px; margin-top: 9px; padding: 10px; border: 1px solid var(--blue); color: var(--ink); }
.demo-list { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 14px; margin: 24px 0; }
.demo { padding: 20px; border: 1px solid var(--line); border-radius: 12px; scroll-margin-top: 110px; }
.demo.recommended { border: 2px solid var(--blue); }
.demo h3 { margin: 12px 0; }
.demo p { min-height: 60px; color: var(--muted); font-size: 15px; }
.demo a { display: block; min-height: 34px; color: var(--blue); font-weight: 650; }
details { margin-top: 19px; }
summary { cursor: pointer; min-height: 44px; font-weight: 650; }

/* Search dialog and footer */
.modal-open { overflow: hidden; }
.search-panel { position: fixed; inset: 0; z-index: 100; display: none; width: 100%; max-width: none; height: 100%; max-height: none; margin: 0; padding: 8vh 20px; border: 0; background: transparent; }
.search-panel[open] { display: flex; justify-content: center; align-items: flex-start; }
.search-panel::backdrop { background: #171b25b8; }
.search-panel.fallback-open { display: flex; justify-content: center; align-items: flex-start; background: #171b25b8; }
.search-box { width: min(720px,100%); max-height: 83vh; overflow: auto; padding: 26px; border-radius: 15px; background: #fff; box-shadow: 0 28px 85px #0b142b40; }
.search-box label { display: block; margin-top: 4px; font-size: 21px; font-weight: 700; }
.search-box input { width: 100%; margin-top: 9px; padding: 11px 2px; border: 0; border-bottom: 2px solid var(--blue); outline-offset: 4px; font-size: 18px; }
.search-close { float: right; width: 44px; height: 44px; border: 0; background: none; font-size: 29px; }
#search-status { margin: 13px 0; color: var(--muted); }
.search-group { padding: 15px 0; border-top: 1px solid var(--line); }
.search-group h3 { margin: 0 0 5px; color: var(--blue); font-size: 15px; }
.search-group a { display: grid; grid-template-columns: 1fr auto; gap: 4px 12px; padding: 13px 12px; border-radius: 9px; color: var(--ink); text-decoration: none; }
.search-group a:hover, .search-group a:focus-visible, .search-group a[aria-selected="true"] { background: #f1f6fb; }
.search-result strong { font-size: 16px; }
.search-result span { grid-column: 1; color: var(--muted); font-size: 14px; }
.search-result em { grid-column: 2; grid-row: 1 / span 2; align-self: center; color: var(--blue); font-size: 14px; font-style: normal; font-weight: 700; }
.search-retry { margin-left: 8px; }
.flow-return { padding: 12px 0; border-bottom: 1px solid var(--line); background: #f7f9fb; }
.flow-return a { display: inline-flex; min-height: 44px; align-items: center; color: var(--blue); font-weight: 700; text-decoration: none; }
.flow-return a:hover, .flow-return a:focus-visible { text-decoration: underline; text-underline-offset: 4px; }
.why-hero { padding: clamp(72px,9vw,132px) 0; }
.why-hero h1 { max-width: 980px; margin: 18px 0 25px; font-size: clamp(42px,6vw,76px); line-height: 1.12; letter-spacing: -.045em; }
.why-lead { max-width: 790px; color: var(--muted); font-size: clamp(19px,2.1vw,25px); line-height: 1.7; }
.why-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 18px; margin-top: 34px; }
.why-grid article { padding: 29px; border: 1px solid var(--line); border-radius: 13px; background: #fff; }
.why-grid h3 { margin: 0 0 10px; font-size: 22px; }
.why-grid p { margin: 0; color: var(--muted); }
.why-comparison { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin: 27px 0; }
.why-comparison > div { padding: 24px; border: 1px solid var(--line); border-radius: 12px; }
.why-comparison strong { font-size: 19px; }
.benchmark-pending { margin-top: 30px; padding: 26px; border-left: 3px solid var(--blue); background: #fff; }
.benchmark-pending strong { font-size: 20px; }
.commons-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 20px; margin: 31px 0 18px; }
.commons-card { overflow: hidden; border: 1px solid var(--line); border-radius: 13px; background: #fff; }
.commons-card img { display: block; width: 100%; height: auto; border-bottom: 1px solid var(--line); }
.commons-card > div { padding: 22px; }
.commons-card h3 { margin: 12px 0 7px; font-size: 23px; }
.commons-card p { color: var(--muted); }
.footer { padding: 70px 0 31px; background: var(--soft); }
.footer-grid { display: grid; grid-template-columns: minmax(220px,2fr) repeat(3,minmax(120px,1fr)); gap: 31px; }
.footer h3 { margin: 0 0 11px; font-size: 22px; }
.footer p { max-width: 320px; color: var(--muted); }
.footer strong { display: block; margin-bottom: 10px; font-size: 15px; }
.footer a { display: block; width: fit-content; min-height: 34px; margin: 5px 0; color: var(--muted); font-size: 14px; }
.footer a:hover { color: var(--blue); text-decoration: underline; }
.footer small { display: block; margin-top: 48px; padding-top: 21px; border-top: 1px solid var(--line); color: var(--quiet); font-size: 13px; }

@media (max-width: 1000px) {
  .nav { flex-wrap: wrap; gap: 12px; padding: 10px 0; }
  .menu-toggle { display: inline-flex; align-items: center; justify-content: center; margin-left: auto; padding: 5px 12px; }
  .navlinks { display: none; order: 4; width: 100%; flex-basis: 100%; padding: 8px 0 12px; border-top: 1px solid var(--line); }
  .navlinks.open { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 0 12px; }
  .navlinks a { min-height: 48px; }
  .search-trigger { order: 3; }
}
@media (max-width: 750px) {
  .wrap { width: min(calc(100% - 36px),var(--max)); }
  .hero { padding: 60px 0 64px; }
  .hero h1 { font-size: clamp(40px,9vw,58px); }
  .hero-figure { margin-top: 43px; border-radius: 15px; }
  .section { padding: 70px 0; }
  .feature-grid, .home-showcase, .gallery-grid, .demo-list, .contributor-list { grid-template-columns: 1fr; }
  .model-tiers { grid-template-columns: 1fr; }
  .style-grid { grid-template-columns: 1fr; }
  .style-choices .section-head { text-align: left; }
  .style-choices .section-intro { margin-left: 0; }
  .hero-figure > .hero-media-desktop { display: none; }
  .hero-figure > .hero-media-mobile { display: block; }
  .gallery-slot-wide { grid-column: auto; }
  .home-pick-integrated_study, .gallery-card.wide { grid-column: auto; }
  .feature-item { min-height: 0; }
  .home-pick .gallery-image { min-height: 0; }
  .start-invitation { grid-template-columns: 1fr; gap: 32px; }
  .simple-steps li { grid-template-columns: 1fr 1.4fr; }
  .gallery-caption { display: block; }
  .gallery-links { margin-top: 12px; }
  .row { grid-template-columns: 1fr; gap: 8px; }
  .row .text-link { white-space: normal; }
  .choices { grid-template-columns: 1fr; }
  .why-grid, .why-comparison, .commons-grid { grid-template-columns: 1fr; }
  .page-head { padding: 58px 0 40px; }
  .footer-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .footer-grid > div:first-child { grid-column: span 2; }
}
@media (max-width: 430px) {
  .style-grid { grid-template-columns: 1fr; }
  .brand { font-size: 16px; }
  .nav { gap: 6px; }
  .menu-toggle, .search-trigger { font-size: 14px; padding-inline: 7px; }
  .hero h1 { font-size: 39px; letter-spacing: -.035em; }
  .hero-lead { font-size: 18px; }
  .hero-figure { padding: 9px; }
  .hero-figure figcaption { font-size: 13px; }
  .section h2, .page-head h1 { font-size: 34px; }
  .section-intro, .page-head p { font-size: 17px; }
  .progress { display: none; }
  .mobile-progress { display: block; width: fit-content; margin: 0 0 29px; padding: 7px 12px; border-radius: 7px; background: #eaf2fa; color: var(--blue); font-size: 14px; font-weight: 700; }
  .simple-steps li { grid-template-columns: 1fr; gap: 3px; }
  .cost-answer { padding: 20px; }
  .cost-row { grid-template-columns: 1fr auto; gap: 2px 12px; padding: 11px 0; }
  .cost-row a { grid-column: 1 / -1; }
}
@media (max-width: 350px) { .hero h1 { font-size: 31px; } }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

/* Battery Commons: catalog browsing, safe use and beginner submissions. */
.commons-stats { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 12px; margin: 6px 0 32px; }
.commons-stats > div { display: flex; align-items: baseline; gap: 9px; padding: 17px 18px; border: 1px solid var(--line); border-radius: 12px; background: #fff; }
.commons-stats strong { font-size: 27px; font-variant-numeric: tabular-nums; }
.commons-stats span { color: var(--muted); }
.commons-toolbar { display: grid; grid-template-columns: minmax(210px,2fr) repeat(3,minmax(135px,1fr)) auto; align-items: end; gap: 12px; }
.commons-toolbar label, .submit-form > label, .submit-form label:not(.check-row) { display: grid; gap: 7px; color: var(--ink); font-size: 14px; font-weight: 650; }
.commons-toolbar input, .commons-toolbar select, .submit-form input, .submit-form textarea, .submit-form select { width: 100%; min-height: 48px; padding: 10px 12px; border: 1px solid #b9bdc5; border-radius: 8px; background: #fff; color: var(--ink); }
.commons-toolbar .ghost { min-height: 48px; }
.commons-grid { grid-template-columns: repeat(3,minmax(0,1fr)); align-items: stretch; }
.commons-card { display: flex; flex-direction: column; min-width: 0; }
.commons-card > img { width: 100%; aspect-ratio: 620 / 275; object-fit: contain; background: #fff; }
.commons-card-body { display: flex; flex: 1; flex-direction: column; align-items: flex-start; padding: 18px; }
.commons-card h2 { margin: 10px 0 7px; font-size: 21px; overflow-wrap: anywhere; }
.commons-badges { display: flex; align-items: center; flex-wrap: wrap; gap: 6px; }
.commons-state, .commons-pick { display: inline-flex; min-height: 28px; align-items: center; padding: 4px 10px; border: 1px solid #b8d0e7; border-radius: 99px; background: #f0f6fc; color: #174f7c; font-size: 13px; font-weight: 650; }
.state-reviewed { border-color: #d8c9a8; background: #faf6ed; color: #674d14; }
.state-verified { border-color: #a8d5bb; background: #edf7f0; color: #20583b; }
.state-core { border-color: #c6badf; background: #f4f0fa; color: #4b3576; }
.commons-pick { border-color: #eccb8c; background: #fff8e9; color: #654400; }
.commons-description { color: var(--muted); }
.commons-card .small { margin-top: auto; }
.commons-tags { display: flex; flex-wrap: wrap; gap: 6px; margin: 4px 0 10px; }
.tag { padding: 2px 9px; border-radius: 20px; background: #f1f2f4; color: #45474d; font-size: 12px; }
.commons-card-actions { display: flex; width: 100%; flex-wrap: wrap; align-items: center; gap: 5px 14px; margin-top: 7px; }
.commons-card-actions .btn { width: 100%; margin-bottom: 4px; }
.commons-card-actions .text-link, .commons-card-actions .quiet-link, .commons-card-actions .ghost { font-size: 14px; }
.favorite-button[aria-pressed="true"] { color: #8c2447; }
.commons-empty { grid-column: 1 / -1; padding: 30px; border: 1px dashed #b9bdc5; border-radius: 12px; text-align: center; }
.commons-preview-missing { min-height: 180px; display: grid; place-items: center; background: var(--soft); color: var(--muted); }
.commons-status-help { margin: 6px 0 20px; padding: 12px 14px; border: 1px solid var(--line); border-radius: 9px; background: #fff; }
.commons-status-help summary { min-height: 40px; display: flex; align-items: center; cursor: pointer; color: var(--blue); font-weight: 650; }
.commons-status-help p { margin: 6px 0 0; color: var(--muted); }
.commons-dialog { width: min(620px,calc(100% - 28px)); padding: 30px; border: 1px solid var(--line); border-radius: 16px; color: var(--ink); box-shadow: 0 18px 70px #0003; }
.commons-dialog::backdrop { background: #14182088; }
.commons-dialog form { position: absolute; top: 12px; right: 14px; }
.dialog-close { width: 44px; height: 44px; border: 0; background: transparent; font-size: 28px; }
.commons-dialog pre, .technical-details pre { max-width: 100%; overflow: auto; padding: 16px; border-radius: 9px; background: var(--soft); white-space: pre-wrap; overflow-wrap: anywhere; font: 14px/1.55 ui-monospace, SFMono-Regular, Consolas, monospace; }
.resource-top { display: grid; grid-template-columns: minmax(0,1.15fr) minmax(280px,.85fr); gap: 30px; align-items: start; }
.resource-preview { width: 100%; height: auto; border: 1px solid var(--line); border-radius: 12px; }
.resource-intro h2 { margin: 13px 0; font-size: clamp(32px,4vw,48px); overflow-wrap: anywhere; }
.resource-intro > p { color: var(--muted); }
.resource-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 15px; margin-top: 15px; }
.resource-section { margin-top: 35px; padding-top: 23px; border-top: 1px solid var(--line); }
.resource-section h2 { font-size: 25px; }
.resource-palette { display: grid; grid-template-columns: repeat(auto-fit,minmax(105px,1fr)); gap: 12px; }
.resource-swatch { display: grid; gap: 6px; }
.swatch-chip { display: block; min-height: 42px; border: 1px solid #9297a0; border-radius: 7px; }
.resource-roles, .version-list { padding-left: 24px; }
.commons-use-text { max-width: 760px; white-space: pre-wrap; overflow-wrap: anywhere; padding: 18px; border: 1px solid var(--line); border-radius: 10px; background: var(--soft); color: var(--ink); font-family: inherit; font-size: 15px; line-height: 1.6; }
.version-list li { padding: 5px 0; }
.technical-details { margin-top: 35px; padding: 18px; border: 1px solid var(--line); border-radius: 10px; }
.technical-details summary { cursor: pointer; font-weight: 650; }
.submit-grid { display: grid; grid-template-columns: minmax(0,1fr) minmax(320px,.8fr); gap: 30px; align-items: start; }
.submit-form, .submit-preview { display: grid; gap: 17px; padding: 24px; border: 1px solid var(--line); border-radius: 14px; background: #fff; }
.submit-form textarea { min-height: 88px; resize: vertical; }
.submit-form fieldset { display: grid; gap: 8px; margin: 0; padding: 16px; border: 1px solid var(--line); border-radius: 9px; }
.submit-form legend { padding: 0 6px; font-weight: 700; }
.check-row { display: flex; align-items: flex-start; gap: 9px; font-weight: 400 !important; }
.check-row input { width: 20px; min-height: 20px; margin: 3px 0 0; }
.submit-preview { position: sticky; top: 90px; background: var(--soft); }
.submit-preview h2 { margin: 0; font-size: 25px; overflow-wrap: anywhere; }
.submit-preview svg { width: 100%; height: auto; border: 1px solid var(--line); border-radius: 9px; background: #fff; }
.submit-swatches { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 9px; }
.submit-swatches .swatch-chip { min-height: 60px; }
.check-list { padding: 10px 14px; border: 1px solid var(--line); border-radius: 9px; background: #fff; }
.check-list p { margin: 4px 0; }
.check-ok { color: #17633e; }
.check-no { color: #8a4500; }
#submit-validation { color: #744100; }

@media (max-width: 1000px) {
  .commons-toolbar { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .commons-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
}
@media (max-width: 750px) {
  .commons-stats { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .commons-toolbar, .commons-grid, .resource-top, .submit-grid { grid-template-columns: 1fr; }
  .submit-preview { position: static; }
}
@media (max-width: 350px) {
  .commons-toolbar { grid-template-columns: 1fr; }
  .commons-stats > div { padding: 12px; }
  .commons-card-body, .submit-form, .submit-preview { padding: 16px; }
}

/* Task journeys and community: the approved home tokens remain the source. */
.navlinks a[aria-current="page"] { color: var(--blue); box-shadow: inset 0 -2px var(--blue); }
.reading-guide { max-width: 820px; }
.reading-guide h2 { font-size: clamp(24px,3vw,32px); }
.reading-guide code { overflow-wrap: anywhere; font-size: .9em; }
.guide-step { display: grid; grid-template-columns: 46px minmax(0,1fr); gap: 20px; padding: 34px 0; border-top: 1px solid var(--line); }
.guide-step h2 { margin: 0 0 20px; }
.step-number { color: var(--quiet); font-size: 20px; font-weight: 600; }
.success-cue { color: var(--teal); }
.task-text { white-space: pre-wrap; overflow-wrap: anywhere; max-width: 100%; padding: 18px; border: 1px solid var(--line); border-radius: 12px; background: var(--soft); font: inherit; font-size: 15px; line-height: 1.7; }
.copy-result { display: inline-block; color: var(--teal); font-size: 14px; }
.entry-secondary, .topic-links { display: flex; flex-wrap: wrap; gap: 8px 18px; margin: 18px 0 28px; }
.topic-links a { display: inline-flex; min-height: 44px; padding: 7px 15px; border: 1px solid var(--line); border-radius: 99px; align-items: center; color: var(--blue); }
.mobile-note { font-size: 14px; color: var(--quiet); }
.help-item { padding: 15px 0; border-bottom: 1px solid var(--line); }
.help-item summary { font-size: 18px; }
.help-item p { margin: 10px 0; }
.figure-preview { width: min(1160px,96vw); max-height: 94dvh; border: 0; border-radius: 18px; padding: 24px; overflow: auto; }
.figure-preview::backdrop { background: #16191fba; }
.figure-preview .dialog-close { position: sticky; display: block; margin-left: auto; top: 0; }
.figure-preview h2 { font-size: 22px; }
.figure-preview img { margin: 16px auto; height: auto; }
.image-recovery { display: block; padding: 18px; font-size: 15px; background: var(--soft); }
.gallery-links .btn { color: #fff; }
.gallery-links details { width: 100%; }
.gallery-links details a { display: inline-block; margin: 4px 14px 4px 0; }
.style-card .btn { margin: 6px 12px 6px 0; }
#selected-sample { padding: 24px; margin: 24px 0; border: 1px solid var(--line); border-radius: 16px; }
.demo-list:has(.task-text) { grid-template-columns: 1fr; }
.demo .task-text { margin: 14px 0 0; }
.demo p { min-height: unset; }
.help-workspace { display: grid; grid-template-columns: minmax(0,1.6fr) minmax(260px,1fr); gap: 48px; align-items: start; }
#help-form { display: grid; gap: 18px; }
.help-workspace label, .reading-guide label { display: grid; gap: 8px; font-weight: 600; }
.help-workspace input, .help-workspace select, .help-workspace textarea, .reading-guide input { width: 100%; min-width: 0; padding: 12px; border: 1px solid #a5aab3; border-radius: 8px; background: #fff; color: var(--ink); font: inherit; }
.help-sidebar { background: var(--soft); padding: 26px; border-radius: 18px; }
.help-sidebar h2 { font-size: 22px; }
.help-sidebar a { display: block; min-height: 44px; padding: 10px 0; color: var(--blue); }
.community-topics { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 18px; margin-bottom: 32px; }
.community-topic { padding: 24px; border: 1px solid var(--line); border-radius: 18px; background: #fff; }
.community-topic h2 { margin: 12px 0 8px; font-size: 24px; }
.community-topic p { color: var(--muted); margin-bottom: 0; font-size: 15px; }
.topic-icon { display: flex; width: 46px; height: 46px; border-radius: 12px; background: #eaf2fa; color: var(--blue); align-items: center; justify-content: center; font-size: 22px; }
.table-scroll { overflow-x: auto; }
.table-scroll table { width: 100%; border-collapse: collapse; }
.table-scroll th, .table-scroll td { text-align: left; padding: 12px; border-bottom: 1px solid var(--line); }
@media (max-width: 960px) { .community-topics { grid-template-columns: repeat(2,minmax(0,1fr)); } .nav { gap: 16px; } .navlinks { gap: 16px; } }
@media (max-width: 750px) { .help-workspace { grid-template-columns: 1fr; gap: 26px; } .guide-step { grid-template-columns: 30px minmax(0,1fr); gap: 10px; } .figure-preview { padding: 16px; } }
@media (max-width: 400px) { .community-topics { grid-template-columns: 1fr; } #selected-sample { padding: 16px; } .brand { font-size: 16px; } }

/* Capability and tool pages: actual work first, readable explanations second. */
.capabilities-hero { background: var(--soft); padding: 64px 0 36px; text-align: center; }
.capabilities-hero h1 { font-size: clamp(38px,5.1vw,64px); line-height: 1.17; letter-spacing: -.025em; margin: 14px 0 22px; }
.capabilities-lead { max-width: 750px; margin: 0 auto 26px; font-size: clamp(18px,2vw,22px); color: var(--muted); line-height: 1.75; }
.capability-exhibit { display: grid; grid-template-columns: 1.15fr 1fr; gap: 18px; margin-top: 46px; text-align: left; }
.capability-exhibit a { background: #fff; border: 1px solid #e4e5e8; border-radius: 20px; padding: 20px; min-width: 0; display: flex; flex-direction: column; justify-content: center; }
.capability-exhibit .exhibit-main { grid-row: span 2; }
.capability-exhibit img { width: 100%; height: auto; object-fit: contain; }
.capability-exhibit a:not(.exhibit-main) img { max-height: 205px; }
.capability-exhibit span { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 4px 12px; font-size: 16px; margin-top: 18px; }
.capability-exhibit b { font-weight: 600; color: var(--blue); }
.capability-exhibit a:hover { border-color: #94b4d4; }
.exhibit-note { text-align: left; margin: 16px 0 0; }
.task-feature-list article { display: grid; grid-template-columns: 40px minmax(0,1fr) minmax(0,1fr); gap: 24px; align-items: center; padding: 42px 0; border-top: 1px solid var(--line); }
.task-feature-list h3 { font-size: 29px; margin: 0 0 18px; line-height: 1.3; }
.task-feature-list p { font-size: 18px; color: var(--muted); max-width: 31em; line-height: 1.85; }
.task-number { align-self: start; color: var(--quiet); font-size: 16px; padding-top: 6px; font-variant-numeric: tabular-nums; }
.task-feature-list .text-link, .finishing-feature .text-link { margin-right: 20px; }
.task-feature-list img, .finishing-feature img { width: 100%; height: auto; }
.task-io { border-left: 2px solid #bacddc; padding-left: 16px; }
.task-io span { color: var(--ink); font-weight: 600; margin-right: 10px; }
.writing-outline { padding: 24px 38px; background: var(--soft); border-radius: 16px; }
.writing-outline span { display: block; padding: 17px 0; font-size: 22px; border-bottom: 1px solid var(--line); }
.writing-outline span:last-child { border-bottom: 0; }
.finishing-feature { display: grid; grid-template-columns: minmax(0,.9fr) minmax(0,1.1fr); gap: 56px; align-items: center; }
.finishing-feature h2 { font-size: clamp(30px,3.8vw,46px); line-height: 1.3; }
.finishing-feature p { font-size: 18px; line-height: 1.8; color: var(--muted); }
.category-nav { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin: 24px 0 12px; }
.category-nav a { min-height: 44px; display: inline-flex; align-items: center; background: #f0f2f5; border: 1px solid #d7dce3; border-radius: 24px; padding: 7px 19px; font-weight: 600; }
.category-nav a:hover { color: var(--blue); border-color: var(--blue); }
.gallery-category { margin-bottom: 80px; min-width: 0; }
.gallery-category:last-child { margin-bottom: 0; }
.gallery-flow { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 28px; }
.gallery-categories { display: block; }
.skill-guide-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 28px; }
.skill-guide { padding: 28px; background: var(--soft); border-radius: 16px; scroll-margin-top: 90px; }
.skill-guide h3 { font-size: 26px; margin: 0 0 24px; line-height: 1.4; }
.skill-guide dl { margin: 0; font-size: 18px; }
.skill-guide dt { color: var(--ink); font-weight: 600; }
.skill-guide dd { margin: 4px 0 18px; color: var(--muted); line-height: 1.8; }
.task-prompt { border-top: 1px solid var(--line); padding-top: 10px; margin-top: 22px; }
.task-prompt p { font-size: 16px; line-height: 1.8; overflow-wrap: anywhere; }
.skill-guide details { font-size: 15px; overflow-wrap: anywhere; }
.skill-guide summary { min-height: 44px; padding: 10px 0; cursor: pointer; }
.skill-guide .copy-result { display: block; font-size: 15px; margin-block: 8px; }
@media (max-width: 900px) {
 .task-feature-list article { grid-template-columns: 28px minmax(0,1fr); }
 .task-feature-list article > a, .writing-outline { grid-column: 2; }
 .finishing-feature { gap: 26px; }
}
@media (max-width: 750px) {
 .capabilities-hero { padding-top: 36px; }
 .capabilities-lead br { display: none; }
 .capability-exhibit { grid-template-columns: 1fr; margin-top: 30px; }
 .capability-exhibit .exhibit-main { grid-row: auto; }
 .capability-exhibit a:not(.exhibit-main) img { max-height: none; }
 .capability-exhibit a { padding: 14px; border-radius: 14px; }
 .gallery-flow, .skill-guide-grid, .finishing-feature { grid-template-columns: 1fr; }
 .task-feature-list article { gap: 14px; }
 .task-feature-list h3 { font-size: 25px; }
 .skill-guide { padding: 21px; }
 .writing-outline { padding: 15px 22px; }
 .category-nav { justify-content: flex-start; }
 .category-nav a { font-size: 15px; padding-inline: 14px; }
}