/* BuyOnce Research Atlas 03 — type-led evidence design, no external dependencies */
:root{--ink:#121919;--muted:#52605f;--paper:#f4f1ea;--white:#fffdf7;--line:#d8d7ce;--acid:#d7ed84;--coral:#eaa58a;--blue:#9eaac5;--green:#314d3e;--red:#be594b;--mono:ui-monospace,SFMono-Regular,Consolas,Menlo,monospace;--serif:Georgia,'Times New Roman',serif;--sans:Inter,'Helvetica Neue',Arial,sans-serif}
*,*:before,*:after{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.62 var(--sans);-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button,input,select{font:inherit}button,a,select,input{touch-action:manipulation}button,a{outline-offset:4px}button{cursor:pointer}::selection{background:var(--acid);color:var(--ink)}img,svg{max-width:100%}.skip{position:absolute;top:-5rem;left:1rem;z-index:99;padding:9px;background:var(--acid)}.skip:focus{top:1rem}.topline{height:29px;background:#080d0f;color:#9ea9a9;display:flex;align-items:center;justify-content:space-between;padding:0 max(5vw,24px);font:10px/1 var(--mono);letter-spacing:.12em}.atlas-head{height:82px;padding:0 max(5vw,24px);display:flex;align-items:center;justify-content:space-between;gap:24px;background:var(--paper);border-bottom:1px solid var(--line)}.logo{display:inline-flex;align-items:center;flex:none;font:900 31px/1 var(--sans);letter-spacing:-.08em}.logo span{color:#527360}.logo i{color:#da846d;font-style:normal;font-size:16px;letter-spacing:0;align-self:flex-start;margin:0 0 0 5px}.atlas-head nav{display:flex;align-items:center;gap:clamp(13px,2.3vw,35px);font-size:12px;font-weight:750;letter-spacing:-.01em}.atlas-head nav a:hover,.atlas-head nav a:focus-visible{color:#b45341}.head-cta{background:var(--ink);color:var(--white);font-size:12px;font-weight:800;padding:14px 20px;white-space:nowrap}.head-cta span{padding-left:12px;color:var(--acid)}.crumb{padding:27px max(5vw,24px);color:#707a78;font:10px/1.5 var(--mono);letter-spacing:.045em}.crumb a:hover{text-decoration:underline}.crumb span{padding:0 5px}.kicker,.sect-label{display:inline-flex;align-items:center;gap:9px;color:#5b685c;font:11px/1.4 var(--mono);letter-spacing:.11em;text-transform:uppercase}.kicker:before,.sect-label:before{content:'';width:7px;height:7px;border-radius:50%;background:#bc7f63;flex:none}h1,h2,h3,p{margin-top:0}h1{letter-spacing:-.075em}h2{letter-spacing:-.056em}em{font-family:var(--serif);font-weight:400;letter-spacing:-.055em}h1 em{letter-spacing:-.07em}.dot{color:#e69d80}.lead{font-size:clamp(18px,2vw,25px);line-height:1.5;color:#505d5b;max-width:800px}p{color:#465554}.muted,.subtle{color:#65736f}.micro,.small-date{font:11px/1.7 var(--mono);letter-spacing:.03em}.small-date{color:#77827d;margin-top:25px}.detail-hero,.guide-hero,.compare-hero{position:relative;overflow:hidden;background:var(--ink);color:var(--paper);margin:0 max(2vw,12px);padding:clamp(44px,7vw,112px) clamp(28px,7vw,112px);border-radius:4px;isolation:isolate}.detail-hero:before,.guide-hero:before,.compare-hero:before{content:'';position:absolute;z-index:-1;right:-135px;top:-220px;width:650px;height:650px;border:1px solid rgba(220,237,190,.16);border-radius:50%;box-shadow:0 0 0 86px rgba(255,255,255,.025),0 0 0 172px rgba(255,255,255,.018),0 0 0 258px rgba(255,255,255,.012)}.guide-hero h1,.compare-hero h1{font-size:clamp(49px,8.5vw,128px);line-height:.99;max-width:1150px;margin:29px 0 30px}.guide-hero em,.compare-hero em{color:#efbca9}.guide-hero .lead,.compare-hero>p{color:#c0cac6;max-width:760px}.guide-hero .kicker,.compare-hero .kicker,.detail-hero .kicker{color:#e1e7d9}.guide-hero .kicker:before,.compare-hero .kicker:before,.detail-hero .kicker:before{background:var(--acid)}.detail-hero{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(330px,.8fr);gap:35px;min-height:560px;padding-right:clamp(25px,5vw,74px)}.detail-hero__copy{padding-top:20px}.detail-hero__copy .kicker span{color:#97aaa0}.detail-hero h1{font-size:clamp(57px,7.2vw,111px);line-height:.99;max-width:850px;margin:35px 0 42px}.detail-verdict{max-width:660px;font-size:clamp(19px,2.1vw,26px);line-height:1.45;color:#e0e5de}.detail-verdict span{display:block;font:11px var(--mono);color:var(--acid);letter-spacing:.13em;margin-bottom:12px}.detail-hero .muted{color:#95a8a2;margin-top:22px}.button-row{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-top:28px}.btn{display:inline-flex;justify-content:center;align-items:center;min-height:48px;border:1px solid currentColor;padding:13px 19px;font-size:13px;font-weight:800;line-height:1.2;transition:transform .2s,background .2s;cursor:pointer}.btn:hover{transform:translateY(-2px)}.btn.solid{background:var(--acid);color:var(--ink);border-color:var(--acid)}.btn.outline{background:transparent;color:inherit;border-color:#7c8b80}.specimen{min-height:445px;display:flex;flex-direction:column;background:#d5d6c9;color:#152321;padding:18px;align-self:stretch;position:relative;overflow:hidden}.specimen:before{content:'';position:absolute;width:500px;height:500px;top:12%;left:0;border-radius:50%;background:radial-gradient(circle at 40% 34%,rgba(255,255,255,.8),transparent 63%)}.specimen-label,.specimen-meta{font:10px/1.4 var(--mono);letter-spacing:.07em;display:flex;justify-content:space-between;gap:15px;position:relative;z-index:2}.specimen-shape{flex:1;display:flex;align-items:center;justify-content:center;z-index:1;position:relative}.shape-core{font:normal 220px/1 var(--sans);font-weight:100;color:#161f20;text-shadow:15px 20px 16px rgba(0,0,0,.14);transform:rotate(-14deg)}.shape-core.wearable{font-size:275px;color:#465a53}.shape-core.camera{color:#555761}.specimen-meta{border-top:1px solid #87958b;padding-top:14px}.metrics-three{margin:0 max(2vw,12px);display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border:1px solid #deded6;border-top:0;background:#e4e8d9}.metric{padding:24px 28px;min-height:128px;border-right:1px solid #bdc5b9;display:flex;flex-direction:column;gap:13px}.metric:last-child{border-right:0}.metric span{font:10px var(--mono);letter-spacing:.11em;color:#56675f}.metric strong{font-size:clamp(15px,1.35vw,21px);letter-spacing:-.03em;line-height:1.3}.metric strong.state-warn{color:#a25440}.body-grid{display:grid;grid-template-columns:minmax(0,1.45fr) minmax(280px,.55fr);gap:clamp(28px,5vw,100px);padding:40px max(6vw,24px) 30px;max-width:1510px;margin:auto}.copy-section{padding:clamp(43px,6vw,92px) max(6vw,24px);max-width:1540px;margin:0 auto}.body-grid .copy-section{padding:clamp(38px,4vw,70px) 0;border-bottom:1px solid var(--line)}.copy-section h2{font-size:clamp(37px,4.6vw,70px);max-width:950px;line-height:1.08;margin:20px 0 26px}.copy-section>p{font-size:16px;line-height:1.83;max-width:790px}.copy-section p a{text-decoration:underline;text-underline-offset:3px}.fact-table{border-collapse:collapse;width:100%;margin:32px 0;font-size:14px;text-align:left}.fact-table th,.fact-table td{padding:16px 14px;border-bottom:1px solid var(--line);vertical-align:top}.fact-table th{font-weight:800;max-width:280px}.fact-table thead{background:#1a2827;color:#fff}.fact-table thead th{border-color:#1a2827;font:11px/1.5 var(--mono);letter-spacing:.04em}.fact-table tbody tr:hover{background:#ebebe1}.fact-table a{text-decoration:underline;text-underline-offset:3px}.note-amber{background:#f1e4d6;border-left:3px solid #d08a72;padding:20px 23px;margin:25px 0 12px;font-size:14px!important;color:#694638!important}.right-rail{padding-top:clamp(32px,4vw,70px)}.rail-card{padding:28px;background:#e5e6dd;border:1px solid #d1d7cf;margin-bottom:15px}.rail-card h3{font-size:24px;letter-spacing:-.05em;line-height:1.2;margin:20px 0 7px}.rail-card p{font-size:14px}.rail-card .rule{height:1px;background:#c2cbc4;margin:20px 0}.rail-card small{font:9px var(--mono);letter-spacing:.09em}.rail-card a{text-decoration:underline;text-underline-offset:5px;font-weight:700}.rail-card--dark{background:#14201d;border-color:#14201d;color:#fff}.rail-card--dark p,.rail-card--dark .sect-label{color:#d1d9d1}.rail-card--dark h3{font-size:29px}.rail-card--dark em{color:var(--acid)}.sources{list-style:none;padding:0;margin:30px 0;display:grid;gap:10px;max-width:1080px}.source-card{background:#e8eae2;display:flex;justify-content:space-between;gap:20px;padding:19px 22px;border-bottom:1px solid #cdd5cb}.source-card strong{font-size:14px}.source-card p{margin:4px 0 0;font-size:12px;color:#68746d}.source-card a{font-size:12px;flex:none;font-weight:800;align-self:center;white-space:nowrap}.source-card a:hover{color:#ae634c}.related{padding:clamp(45px,7vw,95px) max(5vw,24px);background:#e6e8dc;margin:30px max(2vw,12px)}.related h2{font-size:clamp(32px,4vw,65px);letter-spacing:-.06em;line-height:1.1;margin:20px 0 38px}.related h2 sup{font:13px var(--mono);vertical-align:top;color:#8e998d}.item-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.item-card{min-height:345px;background:#faf9f2;border:1px solid #d6d8ce;padding:22px;display:flex;flex-direction:column;transition:transform .2s,box-shadow .2s;overflow:hidden}.item-card:hover{transform:translateY(-5px);box-shadow:6px 8px 0 #d5d9c8}.item-card__top{font:11px var(--mono);color:#67716c;letter-spacing:.05em;display:flex;align-items:center;gap:9px}.index-dot{width:7px;height:7px;background:#c5a277;border-radius:50%}.item-card__art{display:block;font:100px/1 var(--sans);letter-spacing:-.12em;color:#cad0c1;text-align:right;min-height:125px}.item-card.wearable .item-card__art{color:#d5bbb4}.item-card.camera .item-card__art{color:#b9c3ce}.item-card>strong{font-size:clamp(20px,2.1vw,30px);letter-spacing:-.05em;line-height:1.13}.item-card__desc{margin:13px 0 22px;color:#62706b;font-size:13px;line-height:1.6}.item-card__bottom{display:flex;justify-content:space-between;align-items:end;border-top:1px solid #e0e0d8;padding-top:14px;margin-top:auto;font:10px/1.4 var(--mono);letter-spacing:.035em;text-transform:uppercase}.item-card__bottom b{font:24px var(--sans)}.atlas-foot{background:#0f1918;color:#f1f4e6;margin-top:85px;padding:75px max(6vw,24px) 25px;display:grid;grid-template-columns:2fr 1fr 1fr;gap:30px}.atlas-foot .logo{color:#fff;font-size:40px}.atlas-foot p{color:#a6b6aa;max-width:350px;font-size:14px;margin-top:25px}.atlas-foot>div:not(:first-child){display:flex;flex-direction:column;gap:10px}.atlas-foot>div>strong{font:11px var(--mono);letter-spacing:.1em;color:#dceba5;margin-bottom:13px}.atlas-foot>div>a:not(.logo){color:#c2cfc7;font-size:13px}.atlas-foot>div>a:hover{text-decoration:underline}.foot-end{grid-column:1/-1;border-top:1px solid #40504b;padding-top:24px;display:flex!important;flex-direction:row!important;justify-content:space-between;font:10px var(--mono);letter-spacing:.09em;color:#8f9e94}.guide-hero{min-height:380px}.guide-hero h1{max-width:1180px}.guide-hero .lead{color:#c7d4c9}.stats-mini{margin-top:38px;display:flex;flex-wrap:wrap;gap:10px;font:11px var(--mono)}.stats-mini span{border:1px solid #6d8174;padding:9px 12px}.guides-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:15px;padding:45px max(6vw,24px)}.guide-card{padding:35px;min-height:300px;background:#e6e9dd;display:flex;flex-direction:column;align-items:flex-start;transition:background .2s}.guide-card:hover{background:#d7dfcf}.guide-card>span{font:11px var(--mono);color:#748278}.guide-card strong{margin:18px 0;font-size:clamp(26px,3vw,44px);line-height:1.08;letter-spacing:-.06em}.guide-card p{font-size:15px;max-width:530px}.guide-card b{font-size:13px;margin-top:auto}.faq-stack{margin-top:25px;border-top:1px solid var(--line)}.faq-stack details{padding:19px 0;border-bottom:1px solid var(--line)}.faq-stack summary{font-size:18px;font-weight:750;cursor:pointer}.faq-stack p{padding:15px 10px 0;margin:0}.compare-hero h1{font-size:clamp(43px,5.8vw,93px);max-width:1300px}.compare-vs{display:block;margin:12px 0;font:italic 32px var(--serif);color:var(--acid);letter-spacing:0}.compare-hero>p{font-size:20px;line-height:1.5}.side-by-side{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:20px max(2vw,12px) 10px}.side-by-side article{min-height:395px;padding:clamp(25px,4vw,55px);display:flex;flex-direction:column}.side-by-side .left-side{background:#e4e2d8}.side-by-side .right-side{background:#d2ded0}.side-by-side article>span{font:11px var(--mono);letter-spacing:.09em}.side-by-side h2{font-size:clamp(28px,4vw,60px);line-height:1.1;margin:25px 0}.side-by-side p{max-width:590px}.side-status{border-top:1px solid #abb8ac;padding:12px 0;font-size:12px;display:flex;justify-content:space-between;gap:10px}.side-status strong{text-align:right}.side-by-side article>a{font-size:13px;font-weight:800;margin-top:auto;text-decoration:underline;text-underline-offset:5px;padding-top:20px}.sources-two{display:grid;grid-template-columns:1fr 1fr;gap:25px;padding:20px max(6vw,24px) 40px}.sources-two h3{font-size:23px;letter-spacing:-.04em}.sources-two .source-card{display:block}.sources-two .source-card a{display:inline-block;margin-top:12px}.compare-index{display:grid;grid-template-columns:1fr 1fr;gap:8px}.compare-index a{background:#f4f4eb;padding:18px;display:grid;grid-template-columns:1fr auto;gap:5px;border:1px solid #d7dacb}.compare-index a:hover{background:#e4edcf}.compare-index span{grid-column:1/-1;font:10px var(--mono);color:#627168}.compare-index strong{font-size:15px;letter-spacing:-.03em}.compare-index em{font-size:12px;color:#8b6b5b}.pair-select{display:flex;align-items:flex-end;gap:14px;flex-wrap:wrap}.pair-select label{font:11px var(--mono);letter-spacing:.06em;display:flex;flex-direction:column;gap:8px;min-width:220px;flex:1}.pair-select select{width:100%;min-height:48px;padding:12px;border:1px solid #adb9ae;background:#fdfdf7;color:#16201b;font:13px var(--sans)}.method-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:25px max(3vw,18px)}.method-grid article{padding:clamp(25px,4vw,65px);background:#e2e8db;min-height:300px}.method-grid article:nth-child(2){background:#e5dfd3}.method-grid article:nth-child(3){background:#d8dedb}.method-grid article span{font:50px var(--serif);color:#809184}.method-grid article h2{font-size:clamp(23px,2.5vw,36px);line-height:1.15;margin-top:30px}.method-grid article p{font-size:14px}.timeline{max-width:1070px;margin:40px auto;padding:0 24px}.timeline article{display:grid;grid-template-columns:190px 1fr;gap:25px;border-top:1px solid var(--line);padding:35px 0}.timeline time{font:12px var(--mono);color:#71807a}.timeline h2{font-size:33px;letter-spacing:-.04em}.timeline a{display:inline-block;font-weight:750;font-size:13px;margin-right:15px;text-decoration:underline}.profile-monogram{height:145px;width:145px;border-radius:50%;background:#ccd6c7;display:grid;place-items:center;font:45px/1 var(--serif);color:#183226;position:relative}.profile-monogram span{position:absolute;bottom:10px;right:15px;color:#b66e5c;font-size:24px}.quiz-shell{max-width:850px;margin:45px auto;background:#e8e8de;padding:clamp(22px,4vw,50px)}.quiz-step{border:0;padding:0;margin:0;display:none}.quiz-step.is-current{display:block}.quiz-step legend{font-size:clamp(26px,3vw,44px);font-weight:750;line-height:1.13;letter-spacing:-.055em;margin-bottom:29px}.quiz-step legend span{display:block;font:11px var(--mono);letter-spacing:.1em;margin:0 0 12px;color:#7a846e}.quiz-step label{display:block;margin:9px 0;cursor:pointer}.quiz-step label input{position:absolute;opacity:0}.quiz-step label span{display:block;padding:20px;background:#f9f8f2;border:2px solid transparent;font-weight:700}.quiz-step label input:checked+span{background:#dce7c7;border-color:#27382a}.quiz-step label input:focus-visible+span{outline:3px solid #cc9a7a;outline-offset:2px}.quiz-step .subtle{font-size:12px;margin-top:16px}.quiz-actions{border-top:1px solid #cfd3c6;margin-top:28px;padding-top:22px;display:flex;align-items:center;justify-content:space-between;gap:12px}.quiz-actions .btn{min-width:120px}.quiz-actions span{font:11px var(--mono);color:#617168}.quiz-results{margin:40px max(5vw,24px);padding:40px;background:#dce5d8}.quiz-results h2{font-size:clamp(35px,4vw,62px);letter-spacing:-.06em;margin:15px 0}.quiz-results .item-grid{margin-top:30px}
@media(max-width:1100px){.atlas-head nav{gap:13px}.atlas-head nav a{font-size:11px}.head-cta{padding:12px}.detail-hero{grid-template-columns:1fr 350px;padding:45px}.detail-hero h1{font-size:clamp(48px,6vw,75px)}.specimen{min-height:340px}.shape-core{font-size:165px}.specimen .shape-core.wearable{font-size:220px}}
@media(max-width:850px){.topline{font-size:8px}.atlas-head{padding:0 20px;height:auto;min-height:75px;gap:20px;flex-wrap:wrap;padding-top:12px;padding-bottom:12px}.atlas-head nav{order:3;display:flex;width:100%;justify-content:space-between;gap:10px;overflow-x:auto;padding:5px 0}.atlas-head nav a{white-space:nowrap}.atlas-head .head-cta{margin-left:auto}.detail-hero{grid-template-columns:1fr;padding:40px 27px;min-height:auto}.detail-hero h1{font-size:clamp(51px,9vw,82px);max-width:750px}.specimen{min-height:290px;max-width:510px;width:100%}.specimen-shape .shape-core{font-size:145px}.metrics-three{grid-template-columns:1fr}.metric{min-height:auto;border-right:0;border-bottom:1px solid #bdc5b9}.metric:last-child{border-bottom:0}.body-grid{grid-template-columns:1fr;gap:0}.right-rail{padding-top:0;display:grid;grid-template-columns:1fr 1fr;gap:10px}.rail-card{margin-bottom:0}.item-grid{grid-template-columns:repeat(2,1fr)}.method-grid{grid-template-columns:1fr 1fr}.method-grid article:nth-child(3){grid-column:1/-1}.guide-hero h1{font-size:clamp(48px,8.5vw,94px)}.sources-two{grid-template-columns:1fr}.atlas-foot{grid-template-columns:1.5fr 1fr}.atlas-foot>div:nth-child(3){grid-column:2}.atlas-foot .foot-end{grid-column:1/-1}.stats-mini{margin-top:26px}}
@media(max-width:620px){.topline{padding:0 16px}.topline span:last-child{display:none}.atlas-head{padding:14px 16px}.atlas-head .logo{font-size:28px}.head-cta{font-size:11px;padding:10px}.head-cta span{padding-left:3px}.atlas-head nav{gap:15px;padding:9px 0 2px}.atlas-head nav a{font-size:11px}.crumb{padding:19px 17px;font-size:9px;overflow-wrap:anywhere}.detail-hero,.guide-hero,.compare-hero{margin:0 8px;padding:38px 24px}.detail-hero h1,.guide-hero h1{font-size:clamp(43px,13vw,68px);overflow-wrap:anywhere}.detail-hero h1{margin:26px 0}.detail-verdict{font-size:18px}.specimen{min-height:220px}.specimen-shape .shape-core{font-size:125px}.specimen .shape-core.wearable{font-size:175px}.specimen-label,.specimen-meta{font-size:8px}.guide-hero .lead,.compare-hero>p{font-size:16px}.compare-hero h1{font-size:clamp(37px,10vw,60px);overflow-wrap:anywhere}.compare-vs{font-size:26px}.metrics-three{margin:0 8px}.metric{padding:18px;gap:8px}.metric strong{font-size:16px}.body-grid{padding:0 23px}.copy-section{padding:50px 22px}.body-grid .copy-section{padding:42px 0}.copy-section h2{font-size:clamp(34px,9vw,51px)}.copy-section>p{font-size:15px}.fact-table{font-size:12px;display:block;overflow-x:auto;white-space:normal}.fact-table th,.fact-table td{padding:12px 9px;min-width:115px}.fact-table th{min-width:150px}.right-rail{display:block;padding:20px 0}.rail-card{margin-bottom:12px}.source-card{display:block}.source-card a{display:block;margin-top:10px}.related{margin:15px 8px;padding:43px 20px}.related h2{font-size:36px}.item-grid{grid-template-columns:1fr}.item-card{min-height:260px}.item-card__art{font-size:68px;min-height:75px}.side-by-side{grid-template-columns:1fr;margin:10px 8px}.side-by-side article{min-height:300px}.side-by-side h2{font-size:37px}.sources-two{padding:25px 18px}.guide-hero{min-height:340px}.guides-grid{grid-template-columns:1fr;padding:20px 12px}.guide-card{min-height:250px}.method-grid{grid-template-columns:1fr;margin:15px 8px}.method-grid article:nth-child(3){grid-column:auto}.method-grid article{min-height:260px;padding:30px}.compare-index{grid-template-columns:1fr}.timeline article{grid-template-columns:1fr;gap:8px}.atlas-foot{grid-template-columns:1fr 1fr;padding:45px 24px 25px}.atlas-foot>div:first-child{grid-column:1/-1}.atlas-foot .logo{font-size:35px}.atlas-foot .foot-end{font-size:8px;gap:12px}.quiz-shell{margin:15px 8px;padding:24px 18px}.quiz-step legend{font-size:29px}.quiz-step label span{padding:15px}.quiz-actions .btn{min-width:75px;padding:9px}.quiz-actions span{font-size:9px}.quiz-results{margin:20px 8px;padding:26px 20px}.stats-mini span{font-size:9px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{transition-duration:0s!important;animation-duration:0s!important}html{scroll-behavior:auto}}

/* 2026-11-01: keep large feature tables scrollable without forcing mobile column overflow */
.body-grid > * { min-width: 0; }
.body-grid .copy-section { min-width:0; }
@media(max-width:620px){.body-grid{grid-template-columns:minmax(0,1fr)}.body-grid .fact-table{max-width:100%;width:100%;min-width:0;overflow-x:auto}}
