/* DESIGN.md / Apple midnight gallery. Scope: tutorial pages only. */
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body.tutorial-apple a{color:inherit;text-decoration:none}
body.tutorial-apple button,body.tutorial-apple input,body.tutorial-apple textarea{font:inherit}
body.tutorial-apple :is(a,button,input,textarea,summary,[tabindex]):focus-visible{outline:2px solid #2997ff;outline-offset:5px}
body.tutorial-apple [hidden]{display:none!important}
body.tutorial-apple .wrap{width:min(1120px,calc(100% - 80px));max-width:1120px;margin-left:auto;margin-right:auto}
body.tutorial-apple :is(.skip-link,.ac-skip){position:fixed;z-index:200;left:16px;top:12px;transform:translateY(-180%);padding:12px 20px;border-radius:10px;background:#0071e3;color:#fff}
body.tutorial-apple :is(.skip-link,.ac-skip):focus{transform:none}
body.tutorial-apple .top{height:30px;padding:6px 20px;background:#0e0e0e;color:#a1a1a6;border:0;text-align:center;font-size:11px;line-height:18px;letter-spacing:.01em}
body.tutorial-apple .nav{position:sticky;top:0;z-index:100;width:100%;max-width:none;min-height:64px;height:64px;padding:0 max(40px,calc((100% - 1120px)/2));display:flex;align-items:center;gap:36px;background:rgba(0,0,0,.82);backdrop-filter:blur(20px) saturate(1.2);border:0;border-bottom:1px solid #ffffff14;box-shadow:none}
body.tutorial-apple .brand{display:inline-flex;align-items:center;gap:11px;flex:none;color:#f5f5f7;font-family:var(--font-display);font-size:19px;line-height:1;letter-spacing:-.4px;font-weight:600;white-space:nowrap}
body.tutorial-apple .brand em{font:inherit;color:#a1a1a6}
body.tutorial-apple .brand .tutorial-wordmark{flex:none;width:24px;height:27px;margin-right:1px}
body.tutorial-apple .navlinks{display:flex;align-items:center;gap:28px;margin-left:auto}
body.tutorial-apple .navlinks a{display:inline-flex;align-items:center;min-height:44px;padding:0;color:#a1a1a6;font-size:12px;font-weight:400;letter-spacing:-.12px;background:none;border:0;border-radius:0;box-shadow:none;white-space:nowrap}
body.tutorial-apple .navlinks a:is(:hover,.active){color:#f5f5f7}
body.tutorial-apple .tutorial-nav-actions{display:flex;align-items:center;gap:12px;flex:none}
body.tutorial-apple .support{min-height:34px;padding:8px 16px;background:#0071e3;border:0;border-radius:170px;box-shadow:none;color:#fff;font-size:12px;line-height:18px;font-weight:400;white-space:nowrap}
body.tutorial-apple .tutorial-motion-toggle,body.tutorial-apple .tutorial-menu-toggle{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-width:44px;min-height:44px;padding:0 9px;color:#a1a1a6;background:none;border:0;border-radius:999px;font-size:11px;cursor:pointer}
body.tutorial-apple .tutorial-motion-toggle:hover{color:#f5f5f7}
body.tutorial-apple .tutorial-menu-toggle{display:none}
body.tutorial-apple .tutorial-reading-progress{position:fixed;top:64px;left:0;right:0;height:1px;z-index:101;pointer-events:none;background:none}
body.tutorial-apple .tutorial-reading-progress>span{display:block;background:#2997ff;height:100%;transform:scaleX(0);transform-origin:left center}
body.tutorial-apple :is(.guide-hub,.article-shell,.ac-main,.help-main){width:100%;max-width:none;margin:0;padding:0}
body.tutorial-apple .tutorial-hero{position:relative;isolation:isolate;overflow:hidden;background:#000;border:0;border-radius:0;box-shadow:none}
body.tutorial-apple .tutorial-threads{position:absolute;inset:0;z-index:-1;pointer-events:none;opacity:.42;mask-image:linear-gradient(90deg,transparent 12%,#000 65%),linear-gradient(#000 65%,transparent);mask-composite:intersect;background:linear-gradient(#1d1d1f,#000 288px)}
body.tutorial-apple .tutorial-threads canvas{display:block;width:100%;height:100%}
body.tutorial-apple .tutorial-threads[data-state=fallback]{opacity:.35}
body.tutorial-apple .tutorial-hero>div:not(.tutorial-threads),body.tutorial-apple .tutorial-hero>h1,body.tutorial-apple .tutorial-hero>p,body.tutorial-apple .tutorial-hero>span{position:relative;z-index:1}
body.tutorial-apple .guide-hub>.intro{width:100%;max-width:none;min-height:600px;margin:0 0 48px;padding:116px max(40px,calc((100% - 1120px)/2)) 120px}
body.tutorial-apple :is(.reader-label,.ac-kicker,.help-kicker){display:block;color:#a1a1a6;font-size:12px;line-height:20px;letter-spacing:.065em;font-weight:500}
body.tutorial-apple .intro h1{margin:24px 0 28px;max-width:920px;font-family:var(--font-display);font-size:88px;line-height:1.08;font-weight:600;letter-spacing:-2.4px;color:#f5f5f7}
body.tutorial-apple .intro h1 span{color:#f5f5f7}
body.tutorial-apple .intro>p{max-width:560px;margin:0;color:#a1a1a6;font-size:20px;line-height:1.6;letter-spacing:-.3px}
body.tutorial-apple .guide-hub>:is(section,.section){width:min(1120px,calc(100% - 80px));max-width:1120px;margin-left:auto;margin-right:auto}
body.tutorial-apple .featured-gpt{display:grid;grid-template-columns:1.08fr 1fr;gap:70px;margin-top:0;margin-bottom:112px;padding:52px 56px;border:1px solid #ffffff0f;border-radius:28px;background:#111112;box-shadow:none}
body.tutorial-apple .featured-gpt::before{display:none}
body.tutorial-apple .pill{display:inline-block;padding:0;background:none;border:0;border-radius:0;color:#a1a1a6;font-size:12px;font-weight:500;letter-spacing:.03em;box-shadow:none}
body.tutorial-apple .featured-gpt h2{margin:18px 0 18px;color:#f5f5f7;font-family:var(--font-display);font-size:36px;line-height:1.25;letter-spacing:-1px;font-weight:600}
body.tutorial-apple .featured-gpt p{max-width:440px;margin:0 0 24px;color:#a1a1a6;font-size:17px;line-height:1.6}
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body.tutorial-apple :is(.reader-button,.ac-button,.help-button.primary):hover{background:#0077ed;transform:none;box-shadow:none}
body.tutorial-apple .flow{display:flex;flex-direction:column;justify-content:center;gap:0}
body.tutorial-apple .flow>div{display:flex;align-items:center;gap:24px;min-height:68px;padding:16px 0;border:0;border-bottom:1px solid #ffffff12;background:none;border-radius:0;box-shadow:none;color:#d2d2d7;font-size:14px}
body.tutorial-apple .flow>div:last-child{border:0}
body.tutorial-apple .flow b{display:inline-block;width:28px;height:auto;background:none;border:0;border-radius:0;color:#86868b;font-size:14px;font-weight:400;font-variant-numeric:tabular-nums}
body.tutorial-apple .guide-hub>.section{padding:0;margin-bottom:112px}
body.tutorial-apple .section-head{display:flex;justify-content:space-between;align-items:end;gap:40px;margin-bottom:32px}
body.tutorial-apple .section-head h2{margin:12px 0 0;color:#f5f5f7;font-size:44px;font-weight:600;line-height:1.2;letter-spacing:-1.3px}
body.tutorial-apple .guide-search label{display:block;margin-bottom:8px;color:#a1a1a6;font-size:12px;font-weight:400}
body.tutorial-apple :is(.guide-search input,.search-field){width:300px;min-height:48px;border:1px solid #333336;border-radius:980px;background:#ffffff06;color:#f5f5f7;padding:12px 20px;box-shadow:none;font-size:14px}
body.tutorial-apple .guide-search input::placeholder,body.tutorial-apple .search-field input::placeholder{color:#86868b}
body.tutorial-apple .guide-filters{display:flex;gap:10px;flex-wrap:wrap;padding:0;margin-bottom:20px}
body.tutorial-apple .guide-filters button{min-height:44px;padding:10px 19px;border:1px solid #333336;border-radius:999px;background:none;color:#a1a1a6;font-size:12px;font-weight:400;box-shadow:none;cursor:pointer}
body.tutorial-apple .guide-filters button[aria-pressed=true]{background:#f5f5f7;color:#1d1d1f;border-color:#f5f5f7}
body.tutorial-apple .guide-count{margin:0 0 20px;font-size:12px;color:#86868b}
body.tutorial-apple .cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
body.tutorial-apple .guide-card{position:relative;display:flex;flex-direction:column;align-items:flex-start;gap:26px;min-width:0;min-height:320px;padding:32px;border:1px solid #ffffff12;border-radius:28px;background:#0e0e0e;box-shadow:none;transition:background .2s ease,border-color .2s ease,transform .2s ease}
body.tutorial-apple .guide-card:hover{background:#151516;border-color:#ffffff30;transform:translateY(-3px);box-shadow:none}
body.tutorial-apple .guide-card::after{content:attr(data-index);position:absolute;right:30px;top:30px;color:#6e6e73;font-size:12px;letter-spacing:.04em}
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body.tutorial-apple .guide-brand img{width:48px;height:48px;object-fit:contain;border-radius:12px;box-shadow:none}
body.tutorial-apple .guide-brand svg{width:34px;height:34px}
body.tutorial-apple .guide-copy{display:flex;flex:1;flex-direction:column;min-width:0}
body.tutorial-apple .card-kicker{color:#86868b;font-size:11px;line-height:18px;font-weight:400;letter-spacing:.03em}
body.tutorial-apple .guide-card h3{margin:9px 0 12px;color:#f5f5f7;font-size:22px;line-height:1.3;letter-spacing:-.6px;font-weight:600}
body.tutorial-apple .guide-card p{margin:0 0 26px;color:#a1a1a6;font-size:14px;line-height:1.7}
body.tutorial-apple .card-action{display:flex;justify-content:space-between;gap:12px;margin-top:auto;color:#2997ff;font-size:12px;font-weight:400}
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body.tutorial-apple .help h2{margin:0 0 12px;font-size:28px;font-weight:600;letter-spacing:-.7px}
body.tutorial-apple .help p{margin:0;color:#a1a1a6;font-size:14px}
body.tutorial-apple .help>a{flex:none;color:#2997ff;font-size:14px;font-weight:400;background:none;border:0;padding:12px 0;box-shadow:none}
/* Long-form: a calm reading surface below the animated opening. */
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body.tutorial-apple .crumb a{color:#a1a1a6}
body.tutorial-apple .article-heading{display:flex;align-items:flex-start;gap:30px;width:100%;margin:0;padding:64px max(40px,calc((100% - 1120px)/2)) 94px;min-height:390px}
body.tutorial-apple .article-icon{display:grid;place-items:center;flex:none;width:54px;height:54px;margin-top:42px;padding:12px;color:#d2d2d7;background:#ffffff08;border:1px solid #ffffff12;border-radius:16px;box-shadow:none}
body.tutorial-apple .article-icon img{max-width:100%;max-height:100%;border-radius:9px;box-shadow:none}
body.tutorial-apple .article-icon svg{width:28px;height:28px}
body.tutorial-apple .article-title{max-width:960px;min-width:0}
body.tutorial-apple .article-title h1{max-width:1000px;margin:20px 0 24px;color:#f5f5f7;font-family:var(--font-display);font-size:58px;font-weight:600;line-height:1.2;letter-spacing:-1.65px;text-wrap:balance}
body.tutorial-apple .article-title>p{max-width:780px;margin:0;color:#a1a1a6;font-size:20px;line-height:1.65;letter-spacing:-.2px}
body.tutorial-apple .reader-meta{margin-top:24px;color:#86868b;font-size:12px;line-height:1.6;font-weight:400}
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body.tutorial-apple :is(.toc,.ac-sidebar,.help-sidebar){position:sticky;top:100px;align-self:start;max-height:calc(100vh - 130px);overflow:auto;padding:4px 24px 20px 0;background:none;border:0;border-right:1px solid #333336;border-radius:0;box-shadow:none;color:#86868b}
body.tutorial-apple :is(.toc>strong,.ac-sidebar-label,.sidebar-label){display:block;margin:0 0 20px;color:#f5f5f7;font-size:12px;font-weight:500;letter-spacing:.03em}
body.tutorial-apple :is(.toc nav,.ac-toc,.help-sidebar nav){display:flex;flex-direction:column;gap:2px}
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body.tutorial-apple :is(.ac-toc small,.help-sidebar nav small){color:#6e6e73;background:none}
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body.tutorial-apple :is(.toc-help,.ac-sidebar-note,.sidebar-tip) a{color:#2997ff}
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body.tutorial-apple :is(.article-content,.ac-content,.help-content) :is(p,li){overflow-wrap:anywhere}
body.tutorial-apple :is(.article-content,.ac-content) :is(h2,h3){color:#f5f5f7;font-weight:600}
body.tutorial-apple :is(.article-content>section,.ac-section,.question-group){padding:44px 0;margin:0;border:0;border-top:1px solid #333336;border-radius:0;background:none;box-shadow:none;scroll-margin-top:100px}
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body.tutorial-apple :is(.article-content,.ac-content) h2{margin:0 0 24px;font-size:32px;line-height:1.4;letter-spacing:-.8px}
body.tutorial-apple :is(.article-content,.ac-content) h3{margin:0 0 12px;font-size:21px;line-height:1.45;letter-spacing:-.25px}
body.tutorial-apple :is(.article-content,.ac-content,.help-content) p{margin:0 0 20px;color:#b6b6bd;font-size:17px;line-height:1.85}
body.tutorial-apple :is(.article-content,.ac-content,.help-content) strong{color:#e8e8ed;font-weight:600}
body.tutorial-apple :is(.article-content,.ac-content,.help-content) a{color:#2997ff}
body.tutorial-apple :is(.article-content,.ac-content,.help-content) :is(ul,ol){padding-left:24px;margin:20px 0 26px}
body.tutorial-apple :is(.article-content,.ac-content,.help-content) li{margin:9px 0;color:#b6b6bd}
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body.tutorial-apple .reader-note strong{color:#f5f5f7}
body.tutorial-apple :is(.reader-note,.check-box,.format-example) p:last-child{margin-bottom:0}
body.tutorial-apple .reader-steps{display:flex;flex-direction:column;gap:0;margin:26px 0}
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body.tutorial-apple .step-index{display:block;width:auto;height:auto;padding:0;background:none;border:0;color:#6e6e73;font-size:20px;line-height:1.5;font-weight:400;box-shadow:none}
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body.tutorial-apple .table-scroll{width:100%;max-width:100%;overflow-x:auto;margin:28px 0;border:1px solid #333336;border-radius:20px;background:#0e0e0e;box-shadow:none}
body.tutorial-apple table{width:100%;min-width:580px;margin:0;border:0;border-collapse:collapse;font-size:14px;line-height:1.7}
body.tutorial-apple th{background:#1d1d1f;color:#f5f5f7;font-weight:500;text-align:left}
body.tutorial-apple :is(td,th){padding:18px 20px;border:0;border-bottom:1px solid #333336;vertical-align:top}
body.tutorial-apple td{background:#0e0e0e;color:#b6b6bd}
body.tutorial-apple tr:last-child :is(th,td){border-bottom:0}
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body.tutorial-apple :is(.reader-faq .answer,.answer-body,.ac-issue-body) p{font-size:16px;line-height:1.85}
body.tutorial-apple .reader-faq summary::after{content:'+';flex:none;color:#86868b;font-size:22px;font-weight:300}
body.tutorial-apple .reader-faq details[open]>summary::after{content:'−'}
body.tutorial-apple .answer-plus{border-color:#86868b;background:none;color:#86868b}
body.tutorial-apple .answer-plus::before,body.tutorial-apple .answer-plus::after{background:#86868b}
body.tutorial-apple .related-guides{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:36px}
body.tutorial-apple .related-guides a{display:flex;flex-direction:column;gap:12px;padding:24px;border:1px solid #333336;border-radius:20px;background:#0e0e0e;box-shadow:none}
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body.tutorial-apple .related-guides strong{font-size:16px;line-height:1.6;font-weight:500}
body.tutorial-apple .bottom-actions{display:flex;justify-content:space-between;gap:20px;padding:32px 0;border-top:1px solid #333336;color:#2997ff;font-size:14px}
/* Order/aftercare and FAQ retain their original forms and progressive JS. */
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body.tutorial-apple :is(.ac-hero,.help-hero) h1 span{color:#f5f5f7}
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body.tutorial-apple .ac-mini-facts{display:flex;flex-wrap:wrap;gap:14px;font-size:11px;color:#a1a1a6}
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body.tutorial-apple .ac-contact-top{display:flex;align-items:center;gap:14px;margin-bottom:28px}
body.tutorial-apple .ac-contact-top img{border-radius:50%;width:44px;height:44px;box-shadow:none}
body.tutorial-apple .ac-contact-top b{display:block;font-size:14px;font-weight:500;color:#f5f5f7}
body.tutorial-apple .ac-contact-top small{display:block;font-size:10px}
body.tutorial-apple .ac-service-tag{display:flex;align-items:center;gap:7px;font-size:11px;color:#86868b;background:none;border:0;padding:0}
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body.tutorial-apple .tutorial-blackhole:not([data-state=ready])::before{content:"";position:absolute;left:30%;top:15%;width:40%;height:70%;border-radius:50%;background:#000;border:3px solid #fbb866;box-shadow:3px -4px 14px #ffc05a,10px -8px 24px #e24818;transform:rotate(-8deg)}
body.tutorial-apple .tutorial-blackhole:not([data-state=ready])::after{content:"";position:absolute;inset:4%;border-radius:50%;background:repeating-conic-gradient(from 20deg,#ffca79 0deg,#e65313 12deg,#7b2005 28deg,#ffba54 40deg);mask-image:radial-gradient(ellipse,#0000 34%,#000 38% 46%,#0000 56%);animation:tutorial-orbit 12s linear infinite!important;transform:scaleY(.24)}
html[data-tutorial-motion=paused] body.tutorial-apple :is(.tutorial-threads,.tutorial-blackhole)::before,html[data-tutorial-motion=paused] body.tutorial-apple :is(.tutorial-threads,.tutorial-blackhole)::after{animation-play-state:paused!important}
@keyframes tutorial-orbit{from{filter:hue-rotate(-8deg);opacity:.72}50%{filter:hue-rotate(8deg);opacity:1}to{filter:hue-rotate(-8deg);opacity:.72}}
@media(max-width:1100px) and (min-width:821px){body.tutorial-apple .intro h1{font-size:68px;max-width:56%}body.tutorial-apple .intro>p{max-width:49%;font-size:18px}}
@media(max-width:820px){body.tutorial-apple .guide-hub>.intro{min-height:730px;padding-bottom:330px}body.tutorial-apple .tutorial-hero>div.tutorial-blackhole{top:auto;bottom:22px;left:50%;right:auto;width:min(100% - 20px,520px);transform:translateX(-50%);aspect-ratio:1.62}body.tutorial-apple .guide-hub>.intro>.tutorial-threads{mask-image:linear-gradient(90deg,transparent,#000 85%),linear-gradient(#000 70%,transparent)}}
@media(max-width:540px){body.tutorial-apple .guide-hub>.intro{min-height:675px;padding-bottom:280px}body.tutorial-apple .tutorial-hero>div.tutorial-blackhole{bottom:24px}}

body.tutorial-apple .guide-hub>.intro h1{width:fit-content}

body.tutorial-apple .tutorial-blackhole canvas{filter:blur(.4px)}
/* Native PRO Threads Tunnel + complete black-hole MSAA/bloom renderer. */
body.tutorial-apple .tutorial-hero>.tutorial-threads{opacity:1;mask-image:linear-gradient(#000 65%,transparent 100%);background:#000}
body.tutorial-apple .tutorial-hero>.tutorial-threads::after{content:"";position:absolute;inset:0;pointer-events:none;background:linear-gradient(90deg,#000e 0%,#000b 34%,#0003 72%,#0002 100%)}
body.tutorial-apple .tutorial-blackhole::before,body.tutorial-apple .tutorial-blackhole::after{display:none!important}
body.tutorial-apple .tutorial-blackhole:not([data-state=ready]){opacity:0}
body.tutorial-apple .tutorial-blackhole[data-state=ready]{opacity:1;transition:opacity .35s ease}
body.tutorial-apple .tutorial-blackhole canvas{filter:none;image-rendering:auto}
body.tutorial-apple .tutorial-hero>div.tutorial-blackhole{mask-image:radial-gradient(ellipse 25% 44% at 50% 50%,#000 85%,transparent 100%),radial-gradient(ellipse 51% 18% at 50% 55%,#000 70%,transparent 100%);mask-composite:add}
@media(max-width:820px){body.tutorial-apple .guide-hub>.intro>.tutorial-threads{mask-image:linear-gradient(#000 75%,transparent 100%)}body.tutorial-apple .tutorial-hero>.tutorial-threads::after{background:linear-gradient(#0009 0%,#000a 42%,#0004 78%,#0008 100%)}}
/* Smooth full-bleed opening: the actual scene continues under the navigation. */
body.tutorial-apple .tutorial-hero{overflow:visible;background:transparent}
body.tutorial-apple .tutorial-threads{overflow:hidden}
body.tutorial-apple .tutorial-hero>.tutorial-threads,body.tutorial-apple .guide-hub>.intro>.tutorial-threads{top:calc(-1 * var(--scene-offset,94px));bottom:0;height:auto;mask-image:linear-gradient(to bottom,transparent 0,#000 140px,#000 calc(100% - 180px),transparent 100%)}
body.tutorial-apple .nav{background:transparent;border-bottom-color:transparent;backdrop-filter:none}
body.tutorial-apple .top{position:relative;z-index:102;background:#0002}
body.tutorial-apple :is(.article-shell,.ac-main,.help-main)>.crumb{position:relative;z-index:2}
body.tutorial-apple .nav[data-scrolled=true]{background:#000b;border-bottom-color:#ffffff0d;backdrop-filter:blur(18px) saturate(1.15)}
@media(max-width:820px){body.tutorial-apple .guide-hub>.intro{min-height:540px;padding-top:88px;padding-bottom:110px}}
@media(max-width:540px){body.tutorial-apple .guide-hub>.intro{min-height:510px;padding-top:76px;padding-bottom:110px}}
/* From Uiverse.io by chase2k25; the supplied filter touches the surface only. */
body.tutorial-apple{position:relative;isolation:isolate}
body.tutorial-apple>.tutorial-surface-pattern{position:fixed;inset:0;z-index:-1;width:100%;height:100%;pointer-events:none;contain:strict;background:linear-gradient(145deg,rgb(0,0,0),rgba(35,35,35,.9),rgb(50,50,50));filter:url(#tutorial-advanced-texture);transform:translateZ(0);opacity:.22}
body.tutorial-apple .tutorial-surface-pattern>.texture-filter{position:absolute;width:0;height:0;overflow:hidden}
body.tutorial-apple :is(.toc nav a,.ac-toc a,.help-sidebar nav a){color:#a1a1a6}

/* First paint is the same native effect, never a second CSS approximation. */
body.tutorial-apple .tutorial-threads::before{content:none!important;display:none!important;animation:none!important;background:none!important}
body.tutorial-apple .tutorial-threads .tutorial-poster{position:absolute;inset:0;display:block;width:100%;height:100%;margin:0;pointer-events:none}
body.tutorial-apple .tutorial-poster img{display:block;width:100%;height:100%;object-fit:cover;object-position:center;max-width:none;border:0;border-radius:0}
body.tutorial-apple .tutorial-threads canvas{position:absolute;inset:0;opacity:0;transition:none}
body.tutorial-apple .tutorial-threads[data-state=ready] canvas{opacity:1;transition:opacity .48s ease}
@media(prefers-reduced-motion:reduce){body.tutorial-apple .tutorial-threads[data-state=ready] canvas{transition-duration:.12s}}