/* /duo/ page (Z-238). Dark site theme from site.css; everything is text, schemes are HTML (PNG copies in /media/duo/ are the fallback). */
.duopage main { max-width: 1080px; margin: 0 auto; padding: 0 20px 40px; }
.duopage section { padding: 56px 0 0; }
.duopage h1 { font-size: clamp(2.1rem, 5.4vw, 3.6rem); line-height: 1.08; font-weight: 900; letter-spacing: -.02em; margin-bottom: 18px; }
.duopage h2 { font-size: clamp(1.5rem, 3.4vw, 2.2rem); line-height: 1.15; font-weight: 800; margin-bottom: 20px; }
.duopage .d-hero { display: grid; grid-template-columns: 1fr 1fr; gap: 36px; align-items: center; padding-top: 48px; }
.duopage .d-hero .lead { color: var(--muted); font-size: 1.1rem; margin-bottom: 26px; }
.duopage .d-hero .under { color: var(--muted); font-size: .9rem; margin-top: 14px; }
.duopage .d-hero video, .duopage .d-hero img { width: 100%; height: auto; border-radius: 20px; display: block; aspect-ratio: 16 / 9; object-fit: cover; background: #0e1520; }
.duopage .plate { background: linear-gradient(135deg, rgb(102 126 234 / .18), rgb(240 147 251 / .12)); border: 1px solid var(--line); border-radius: 20px; padding: 26px 28px; }
.duopage .plate b { display: block; color: var(--pink); letter-spacing: 3px; text-transform: uppercase; font-size: .8rem; margin-bottom: 8px; }
.duopage .plate p { font-size: 1.15rem; line-height: 1.5; }
.duopage .d-flow .so { border-color: #6a7fe0; } .duopage .d-flow .so h3 { color: var(--link); }
.duopage .d-flow .m { display: block; color: var(--muted); font-size: .72rem; letter-spacing: 2px; text-transform: uppercase; margin-bottom: 6px; }
.duopage .d-flow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; counter-reset: s; }
.duopage .d-flow > div { position: relative; border: 2px solid var(--line); border-radius: 18px; padding: 18px; background: rgb(255 255 255 / .03); }
.duopage .d-flow > div:not(:last-child)::after { content: "\2192"; position: absolute; right: -14px; top: 50%; transform: translate(50%, -50%); color: var(--muted); font-size: 1.3rem; z-index: 1; }
.duopage .d-flow h3 { font-size: 1.1rem; margin-bottom: 6px; }
.duopage .d-flow p { color: var(--muted); font-size: .95rem; }
.duopage .d-flow .gpt { border-color: #1fa57a; } .duopage .d-flow .gpt h3 { color: #3fd6a2; }
.duopage .d-flow .cl { border-color: #d9784f; } .duopage .d-flow .cl h3 { color: #ff9a6e; }
.duopage .d-note { color: var(--muted); margin-top: 16px; }
.duopage .cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.duopage .card { border-radius: 18px; padding: 20px; border: 1px solid var(--line); }
.duopage .card h3 { font-size: .8rem; letter-spacing: 2.5px; text-transform: uppercase; margin-bottom: 8px; }
.duopage .card.g { background: rgb(63 214 162 / .12); } .duopage .card.g h3 { color: #3fd6a2; }
.duopage .card.o { background: rgb(255 159 67 / .13); } .duopage .card.o h3 { color: var(--orange); }
.duopage .card.b { background: rgb(102 126 234 / .16); } .duopage .card.b h3 { color: var(--link); }
.duopage .d-q { background: rgb(255 255 255 / .06); border-radius: 16px; padding: 14px 18px; margin-bottom: 14px; color: var(--muted); }
.duopage .d-split { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; align-items: center; }
.duopage .d-split img { width: 100%; border-radius: 20px; }
.duopage ul.tick { display: grid; gap: 10px; }
.duopage ul.tick li { padding-left: 28px; position: relative; font-size: 1.05rem; }
.duopage ul.tick li::before { content: "\2713"; position: absolute; left: 0; color: var(--teal); font-weight: 800; }
.duopage .tbl { width: 100%; border-collapse: collapse; border: 1px solid var(--line); border-radius: 16px; overflow: hidden; display: table; font-size: .95rem; }
.duopage .tbl th, .duopage .tbl td { padding: 11px 14px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
.duopage .tbl thead th { background: rgb(255 255 255 / .08); }
.duopage .tbl tr.grp th { background: rgb(255 255 255 / .04); color: var(--muted); font-size: .8rem; letter-spacing: 1.5px; text-transform: uppercase; }
.duopage .tbl td.no { background: rgb(255 120 90 / .07); } .duopage .tbl td.yes { background: rgb(63 214 162 / .09); }
.duopage .tbl td.n { white-space: nowrap; text-align: right; font-weight: 700; }
.duopage .sub2 { color: var(--muted); margin: -10px 0 16px; }
.duopage details.keys { margin-top: 18px; border: 1px solid var(--line); border-radius: 14px; padding: 14px 18px; }
.duopage details.keys summary { cursor: pointer; font-weight: 700; }
.duopage details.keys ul { margin: 12px 0 0 18px; list-style: disc; display: grid; gap: 8px; }
.duopage details.keys p { margin-top: 12px; color: var(--muted); }
.duopage .btns { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 16px; }
.duopage .good { color: var(--muted); font-size: .9rem; }
.duopage .good h2 { font-size: 1.1rem; color: var(--text); }
.duopage .good ul { display: grid; gap: 8px; list-style: disc; margin-left: 18px; }
.duopage .good a, .duopage main p a { color: var(--link); text-decoration: underline; }
.duopage .badges { text-align: center; margin: 16px 0; }
.duopage .badges p { margin: 10px 0; }
@media (max-width: 800px) {
  .duopage .d-hero, .duopage .d-split { grid-template-columns: 1fr; }
  .duopage .d-flow, .duopage .cards { grid-template-columns: 1fr; }
  .duopage .d-flow > div:not(:last-child)::after { content: "\2193"; right: auto; left: 50%; top: auto; bottom: -22px; transform: translateX(-50%); }
  .duopage section { padding-top: 44px; }
  .duopage .tbl { font-size: .85rem; } .duopage .tbl th, .duopage .tbl td { padding: 9px 8px; }
}

.duopage .rail { font-weight: 700; margin: 18px 0 10px; } .duopage .rail b { font-size: 1.6rem; margin-right: 6px; }
.duopage .rail.bad b { color: #ff9a6e; } .duopage .rail.good b { color: #3fd6a2; }
.duopage .apps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.duopage .d-app { border: 1px solid var(--line); border-radius: 16px; padding: 16px; background: rgb(255 255 255 / .03); }
.duopage .d-app.g { border-color: rgb(31 165 122 / .6); } .duopage .d-app.t { border-color: rgb(217 120 79 / .6); }
.duopage .d-app h3 { font-size: 1rem; margin-bottom: 8px; }
.duopage .d-app ol { margin-left: 22px; list-style: decimal; display: grid; gap: 6px; }
.duopage .d-app p, .duopage .d-app ul { color: var(--muted); font-size: .95rem; } .duopage .d-app ul { display: grid; gap: 6px; }
.duopage .d-app p { margin-top: 8px; } .duopage .d-app h3 + p { margin-top: 0; }
.duopage .lanes { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
.duopage .d-lane { border: 1px solid var(--line); border-radius: 18px; padding: 16px; background: rgb(255 255 255 / .03); }
.duopage .d-lane .lh { color: var(--muted); font-size: .75rem; letter-spacing: 2px; text-transform: uppercase; }
.duopage .d-lane h3 { font-size: 1.05rem; margin: 4px 0 12px; }
.duopage .d-lane ul { display: grid; gap: 8px; }
.duopage .d-lane li { display: flex; justify-content: space-between; gap: 10px; background: rgb(255 255 255 / .05); border-radius: 12px; padding: 10px 12px; font-size: .88rem; color: var(--muted); }
.duopage .d-lane li b { color: var(--text); } .duopage .d-lane li.pri { outline: 2px solid var(--c, var(--blue)); }
.duopage .d-lane li em { font-style: normal; font-weight: 800; color: var(--text); text-align: right; white-space: nowrap; } .duopage .d-lane li em small { display: block; font-size: .6rem; color: var(--muted); font-weight: 600; }
.duopage .d-lane.l-answer { --c: #3fd6a2; } .duopage .d-lane.l-compare { --c: var(--orange); } .duopage .d-lane.l-decide { --c: var(--link); } .duopage .d-lane.l-special { --c: var(--pink); }
@media (max-width: 1000px) { .duopage .lanes { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 800px) { .duopage .apps, .duopage .lanes { grid-template-columns: minmax(0, 1fr); } }
.duopage main { text-align: left; width: 100%; }
.duopage main > section { padding-top: 56px; }
.duopage main h1, .duopage main h2, .duopage main h3 { text-align: left; background: none; -webkit-text-fill-color: currentColor; color: var(--text); }
.duopage .d-flow h3, .duopage .d-card h3, .duopage .d-lane h3 { background: none; }
.duopage .d-flow .gpt h3 { color: #3fd6a2; } .duopage .d-flow .cl h3 { color: #ff9a6e; } .duopage .d-flow .so h3 { color: var(--link); }
.duopage .d-card.g h3 { color: #3fd6a2; } .duopage .d-card.o h3 { color: var(--orange); } .duopage .d-card.b h3 { color: var(--link); }
.duopage .d-hero > * { min-width: 0; } .duopage .d-split > * { min-width: 0; }
.duopage .d-note, .duopage .sub2 { text-align: left; max-width: none; }
.duopage .d-lane li { align-items: flex-start; }
.duopage .d-lane ul, .duopage .d-lane li { list-style: none; }
.duopage section > * { margin-inline: 0; }
.duopage main a.btn { color: #fff; text-decoration: none; }
.duopage .d-hero h1 { font-size: clamp(2rem, 4.6vw, 3.2rem); }
.duopage .d-split img, .duopage .tbl { max-width: 100%; }
.duopage .badges { display: flex; flex-direction: column; align-items: center; }
.duopage .d-lane li b, .duopage .tbl th { font-family: "Apple Color Emoji", "Segoe UI Emoji", "Noto Color Emoji", Montserrat, system-ui, sans-serif; }
.duopage .d-lane li > span { min-width: 0; overflow-wrap: anywhere; }
.duopage .d-lane li { align-items: flex-start; }
.duopage .site-footer .badges { width: 100%; text-align: center; margin: 28px 0; }
.duopage .site-footer .badges img { width: 160px; height: auto; display: block; margin: 0 auto; }
.duopage .site-footer .badges p.dang { font-size: .85rem; margin: 10px 0 0; }
.duopage .site-footer .badges p { margin: 8px 0; justify-content: center; }
.duopage .site-footer .badges a { display: inline-block; }
.duopage .d-lane li .em { display: inline-grid; place-items: center; width: 1.7em; height: 1.7em; margin-right: 4px; border-radius: 8px; background: #f3efe6; font-size: .95rem; line-height: 1; vertical-align: middle; }
.duopage .d-lane li > span { text-align: left; } .duopage .d-lane li b { text-align: left; word-spacing: normal; }

/* Poly app block (26.10) */
.duopage .d-poly { border: 1px solid rgb(255 255 255 / .22); border-radius: 16px; padding: 22px 20px; background: rgb(255 255 255 / .04); }
.duopage .d-poly h2 { margin-top: 0; }
.duopage .d-poly-stores { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 14px; }
.duopage .d-poly .store { flex: 1 1 150px; min-width: 0; text-decoration: none; }
.duopage .d-poly .store-soon { cursor: default; opacity: .6; }
.duopage .d-poly .store-soon:hover { border-color: rgb(255 255 255 / .28); background: rgb(255 255 255 / .04); }

/* Duo audience landing pages (build-duo-audiences.py) */
.duopage .d-eyebrow { color: var(--pink); letter-spacing: 3px; text-transform: uppercase; font-size: .8rem; font-weight: 700; margin-bottom: 12px; }
.duopage .btns.dl a.btn.big { flex-direction: column; gap: 2px; text-align: center; }
.duopage .btns.dl a.btn.big small { font-size: .75rem; font-weight: 500; opacity: .85; }
.duopage .btns.dl [hidden], .duopage .dl-other[hidden], .duopage .dl-other [hidden] { display: none; }
.duopage .dl-other { margin-top: 12px; font-size: .9rem; }
.duopage .d-steps { list-style: none; counter-reset: st; display: grid; gap: 12px; }
.duopage .d-steps li { counter-increment: st; display: grid; grid-template-columns: 2.4rem 1fr; gap: 2px 14px; border: 1px solid var(--line); border-radius: 16px; padding: 16px; background: rgb(255 255 255 / .03); }
.duopage .d-steps li::before { content: counter(st); grid-row: span 2; display: grid; place-items: center; width: 2.4rem; height: 2.4rem; border-radius: 50%; background: var(--grad, #667eea); color: #fff; font-weight: 800; }
.duopage .d-steps li span { color: var(--muted); }
.duopage .d-small { color: var(--muted); font-size: .85rem; }
.duopage .d-small p + p { margin-top: 12px; }
@media (max-width: 800px) { .duopage .btns.dl a.btn.big { width: 100%; } }