/* V34: open product story. The page rhythm replaces repeated card shells. */
:root { --open-band:#f3f7ff; --open-gutter:max(5.75vw,calc((100vw - 1320px)/2)); }
:root[data-theme="dark"] { --open-band:#142339; }
.td-main { padding-top:18px; }
.product-path { margin-bottom:8px; }
.td-main > .td-panel {
  width:100%; margin:0; border:0; border-radius:0; box-shadow:none;
  padding:72px var(--open-gutter); background:transparent;
}
.td-main > .td-hero {
  grid-template-columns:1fr 1.08fr; gap:72px; min-height:560px; padding-block:36px 64px;
  background:linear-gradient(180deg,var(--bg),var(--open-band)); align-items:center;
}
.td-hero-copy { padding:0; }
.td-hero h1 { font-size:clamp(40px,4.1vw,60px); line-height:1.25; letter-spacing:-1.4px; margin-bottom:24px; }
.td-hero .td-eyebrow { margin-bottom:22px; }
.td-lead { font-size:20px; line-height:1.8; }
.td-intro { max-width:490px; margin-top:12px; }
.td-actions { margin-top:28px; }
.td-hero-art { padding:0; margin:0; gap:0; background:transparent; border-radius:0; }
.td-hero-art::before { content:none; }
.td-hero-art img { border-radius:6px; width:100%; max-width:none; }
.td-main h2 { font-size:32px; line-height:1.45; letter-spacing:-.65px; }
.td-section-heading { padding:0; margin-bottom:32px; }
.td-main > #version-choice { padding-block:64px; }
.td-editions { gap:96px; }
.td-editions article,.td-editions article:last-child {
  display:grid; grid-template-rows:auto auto minmax(86px,1fr) auto 52px; justify-items:start;
  padding:0; border:0; border-radius:0; background:transparent; box-shadow:none;
}
.td-editions article+article::before { content:""; position:absolute; left:-48px; top:4%; width:1px; height:92%; background:var(--line); }
.td-editions .td-eyebrow { margin-bottom:10px; }
.td-editions h3 { font-size:27px; }
.td-editions p { min-height:0; margin:14px 0 24px; max-width:520px; }
.td-editions .download-code { margin-top:8px; }
.td-main > .feature-intro { width:min(1320px,88.5%); margin:0 auto; padding:32px 0; border-top:1px solid var(--line); }
.feature-intro h2 { margin-bottom:0; }
.capability-links { gap:12px 30px; margin-top:16px; }
.capability-links a { border:0; border-radius:0; border-bottom:1px solid transparent; background:transparent; padding:8px 0; color:var(--body); }
.capability-links a:hover { background:transparent; color:var(--brand-ink); border-color:var(--brand-ink); }
.td-main > #parsing { padding-top:32px; }
.feature-heading { gap:16px; margin-bottom:32px; }
.feature-heading h2 { font-size:30px; }
.feature-icon { width:30px; height:44px; border:0; border-radius:0; background:transparent; }
.feature-icon .icon { width:27px; height:27px; }
.parse-table { border:0; border-top:1px solid var(--line); border-bottom:1px solid var(--line); border-radius:0; background:transparent; }
.parse-head { background:var(--open-band); }
.parse-row { padding:20px 24px; }
.td-main > #volumes { background:var(--open-band); padding-block:72px; padding-inline:var(--open-gutter); gap:90px; grid-template-columns:.9fr 1.1fr; }
#volumes .td-split-copy { padding:0; }
#volumes .td-split-copy h2 { font-size:34px; margin-bottom:20px; }
.td-volume-area { padding:0; border:0; border-radius:0; background:transparent; }
.td-volume-area::before { content:none; }
.td-tabs { display:flex; gap:36px; padding:0; margin-bottom:28px; border-bottom:1px solid var(--brand-line); }
.td-tabs button { flex:1; padding:10px 0 12px; min-height:48px; border:0; border-bottom:2px solid transparent; border-radius:0; background:transparent; color:var(--body); font-size:16px; text-align:center; }
.td-tabs button[aria-selected="true"] { border:0; border-bottom:2px solid var(--brand-ink); background:transparent; color:var(--brand-ink); }
.td-tabs button[aria-selected="true"]::after { content:none; }
.td-volume-panel { padding:0; }
.td-volume-panel h3 { font-size:22px; margin-bottom:20px; }
.td-volume-panel ul { line-height:2.3; }
.detail-grid { gap:32px; }
.detail-grid article { padding:20px 0 0; border:0; border-top:1px solid var(--brand-line); border-radius:0; background:transparent; }
.detail-grid h3 { margin-bottom:10px; }
.feature-note { margin-top:26px!important; }
.td-main > #reuse { background:var(--open-band); grid-template-columns:.85fr 1.15fr; gap:90px; }
.reuse-section .td-split-copy { padding:0; }
.reuse-list { padding:0; gap:0 30px; }
.reuse-list::before { content:none; }
.reuse-list>div { padding:22px 0; }
.td-main > #how-it-works { padding:64px var(--open-gutter); background:var(--open-band); }
#how-it-works > .td-split-copy { padding:0; margin-bottom:32px; }
.td-steps { gap:32px; }
.td-steps li,.td-steps li:last-child { padding:20px 0 0; min-height:0; gap:16px; border:0; border-top:1px solid var(--brand-line); border-radius:0; background:transparent; }
.td-steps li>span { width:auto; height:auto; display:block; border:0; border-radius:0; background:transparent; font-size:25px; line-height:1.2; }
.platform-grid { gap:56px; }
.platform-grid article { position:relative; border:0; border-radius:0; background:transparent; padding:16px 0; }
.platform-grid article+article::before { content:""; position:absolute; left:-28px; top:12%; height:76%; width:1px; background:var(--line); }
.platform-unavailable { border:0; background:transparent; }
.td-main > #faq { display:grid; grid-template-columns:.65fr 1.35fr; gap:80px; padding-top:40px; }
.td-faq { display:block; }
.td-faq details,.td-faq details[open] { padding:21px 0; border:0; border-bottom:1px solid var(--line); border-radius:0; background:transparent; }
.td-faq details:first-child { border-top:1px solid var(--line); }
.td-faq summary { min-height:36px; }
.td-main > .td-closing { background:var(--open-band); padding-block:56px; }
.page-scope-note { padding-top:24px; }
@media(max-width:1100px) {
  .td-main > .td-hero { gap:40px; min-height:500px; }
  .td-hero h1 { font-size:44px; }
  .td-main > #volumes,.td-main > #reuse { gap:48px; }
  .td-editions { gap:64px; }.td-editions article+article::before { left:-32px; }
  .detail-grid,.td-steps { grid-template-columns:repeat(2,minmax(0,1fr)); }
  .td-main > #faq { gap:48px; }
}
@media(max-width:850px) {
  .td-main > .td-panel { padding-block:52px; }
  .td-main > .td-hero { grid-template-columns:1fr; gap:36px; padding-block:28px 48px; }
  .td-hero-copy { max-width:620px; }.td-hero-art { padding:0; margin:0; }.td-hero-art img { max-width:100%; }
  .td-main > #volumes,.td-main > #reuse { grid-template-columns:1fr; gap:36px; padding-block:52px; }
  .td-editions { gap:48px; }.td-editions article+article::before { left:-24px; }
  .platform-grid { grid-template-columns:repeat(3,minmax(0,1fr)); gap:32px; }
  .platform-grid article+article::before { left:-16px; }
  .platform-grid .button { font-size:13px; padding-inline:10px; }
  .td-main > #faq { grid-template-columns:1fr; gap:12px; }
  .td-faq summary { min-height:44px; }
}
@media(max-width:600px) {
  :root { --open-gutter:20px; }
  .td-main { padding-top:12px; }.product-path { width:calc(100% - 40px); margin-bottom:10px; }
  .td-main > .td-panel { padding:44px var(--open-gutter); }
  .td-main > .td-hero { padding-block:20px 40px; gap:32px; }
  .td-hero h1 { font-size:39px; }.td-hero .td-eyebrow { font-size:13px; margin-bottom:20px; }
  .td-lead { font-size:18px; }.td-intro { font-size:15px; }.td-hero-copy { padding:0; }
  .td-main h2,.feature-heading h2,#volumes .td-split-copy h2 { font-size:27px; }
  .td-main > #version-choice { padding-block:44px; }.td-editions { grid-template-columns:1fr; gap:32px; }
  .td-editions article,.td-editions article:last-child { padding:0; grid-template-rows:auto auto auto auto auto; }
  .td-editions article+article { border-top:1px solid var(--line); padding-top:30px; }
  .td-editions article+article::before { content:none; }.td-editions h3 { font-size:24px; }
  .td-main > .feature-intro { width:calc(100% - 40px); padding:28px 0 8px; }
  .capability-links { gap:4px 22px; margin-top:12px; }.capability-links a { font-size:14px; }
  .td-main > #parsing { padding-top:30px; }.feature-heading { display:flex; gap:12px; }.feature-icon { margin:0; width:24px; height:38px; }.feature-icon .icon { width:23px; height:23px; }
  .parse-row { padding:20px 12px; gap:8px; }
  .td-main > #volumes,.td-main > #reuse { padding-block:44px; gap:30px; }
  .td-tabs { gap:12px; margin-bottom:24px; }.td-tabs button { font-size:16px; padding-inline:0; }
  .td-volume-panel h3 { font-size:21px; }
  .detail-grid { grid-template-columns:1fr; gap:24px; }.detail-grid article { padding:18px 0 0; }
  .reuse-list { grid-template-columns:1fr; }.reuse-list>div { padding:18px 0; }
  .td-main > #how-it-works { padding:44px var(--open-gutter); }.td-steps { grid-template-columns:1fr; gap:26px; }
  .td-steps li,.td-steps li:last-child { display:grid; grid-template-columns:40px 1fr; gap:14px; padding:20px 0 0; }
  .platform-grid { grid-template-columns:1fr; gap:24px; }.platform-grid article { padding:8px 0 24px; }
  .platform-grid article+article { border-top:1px solid var(--line); padding-top:30px; }.platform-grid article+article::before { content:none; }
  .td-main > #faq { padding-top:20px; gap:8px; }.td-faq details { padding:17px 0; }
  .td-main > .td-closing { padding-block:40px; }.page-scope-note { width:calc(100% - 40px); }
}