:root{--ptn-orange:#ff6600;--ptn-orange-dark:#d94f00;--ptn-black:#111;--ptn-ink:#202020;--ptn-grey:#646464;--ptn-line:#e8e8e8;--ptn-soft:#f7f7f5}*{box-sizing:border-box}html{scroll-behavior:smooth}body.ptn-site{margin:0;background:#fff;color:var(--ptn-ink);font-family:Arial,Helvetica,sans-serif}.ptn-wrap{width:min(1180px,calc(100% - 42px));margin:0 auto}.ptn-shell-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);backdrop-filter:blur(12px);border-bottom:1px solid var(--ptn-line)}.ptn-head-inner{height:84px;display:flex;align-items:center;gap:26px}.ptn-brand{display:block;line-height:0}.ptn-brand img{display:block;width:min(350px,36vw);height:58px;object-fit:contain;object-position:left center}.ptn-tagline{font-size:14px;color:#666;border-left:1px solid #ddd;padding-left:22px;white-space:nowrap}.ptn-topnav{margin-left:auto;display:flex;align-items:center;gap:26px}.ptn-topnav a{font-size:14px;font-weight:700;text-decoration:none;color:#202020}.ptn-topnav a:hover{color:var(--ptn-orange)}.ptn-hero{background:linear-gradient(120deg,#121212 0%,#1e1e1e 64%,#2c1b11 100%);color:#fff;overflow:hidden}.ptn-hero-inner{min-height:510px;display:grid;grid-template-columns:1.25fr .75fr;align-items:center;gap:50px;position:relative}.ptn-hero-copy{padding:75px 0}.ptn-eyebrow,.ptn-mini{font-size:12px;letter-spacing:.16em;text-transform:uppercase;font-weight:800;color:var(--ptn-orange)}.ptn-hero h1{font-size:clamp(50px,7vw,86px);line-height:.98;letter-spacing:-.055em;margin:12px 0 24px;max-width:820px}.ptn-hero p{font-size:20px;line-height:1.55;color:#ddd;max-width:720px;margin:0}.ptn-hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}.ptn-btn{display:inline-flex;align-items:center;justify-content:center;padding:14px 19px;border-radius:8px;font-weight:800;font-size:14px;text-decoration:none;border:1px solid transparent}.ptn-btn-primary{background:var(--ptn-orange);color:#101010}.ptn-btn-primary:hover{background:#ff7a22}.ptn-btn-ghost{color:#fff;border-color:#5d5d5d;background:rgba(255,255,255,.03)}.ptn-btn-dark{background:#111;color:#fff}.ptn-hero-mark{display:flex;justify-content:flex-end;align-items:center;position:relative}.ptn-hero-mark:before{content:"";position:absolute;width:460px;height:460px;border-radius:50%;background:radial-gradient(circle,rgba(255,102,0,.28),rgba(255,102,0,0) 66%)}.ptn-hero-mark img{position:relative;width:min(385px,34vw);aspect-ratio:1/1;object-fit:cover;border-radius:70px;box-shadow:0 28px 80px rgba(0,0,0,.38);transform:rotate(2deg)}.ptn-category-strip{border-bottom:1px solid var(--ptn-line);background:#fff}.ptn-category-scroll{display:flex;gap:8px;overflow:auto;padding:18px 0;scrollbar-width:none}.ptn-category-scroll::-webkit-scrollbar{display:none}.ptn-category-scroll a{white-space:nowrap;border:1px solid #ddd;border-radius:999px;padding:9px 13px;color:#262626;text-decoration:none;font-size:13px;font-weight:700}.ptn-category-scroll a:hover{border-color:var(--ptn-orange);color:#b34700}.ptn-section{padding:65px 0 80px}.ptn-section-head{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:26px}.ptn-section-head h2,.ptn-dark-section h2,.ptn-sponsor-box h2{font-size:38px;line-height:1.08;letter-spacing:-.035em;margin:8px 0 0}.ptn-section-head>a{color:#333;text-decoration:none;font-weight:700;font-size:14px}.ptn-lead-grid{display:grid;grid-template-columns:1.55fr 1fr;gap:30px}.ptn-lead-card{border:1px solid var(--ptn-line);border-radius:18px;overflow:hidden;background:#fff;box-shadow:0 14px 40px rgba(0,0,0,.055)}.ptn-lead-image{display:block;aspect-ratio:16/9;overflow:hidden;background:#151515}.ptn-lead-image img{width:100%;height:100%;object-fit:cover}.ptn-image-fallback{width:100%;height:100%;display:flex;align-items:center;justify-content:center;gap:18px;background:linear-gradient(135deg,var(--ptn-orange),#d84800);color:#111}.ptn-image-fallback b{font-size:80px}.ptn-image-fallback em{font-style:normal;font-size:32px;font-weight:900}.ptn-lead-body{padding:27px}.ptn-kicker{display:inline-block;font-size:11px;letter-spacing:.12em;text-transform:uppercase;font-weight:900;color:#c34e00}.ptn-lead-body h3{font-size:34px;line-height:1.08;letter-spacing:-.03em;margin:9px 0 12px}.ptn-lead-body h3 a,.ptn-side-item h3 a,.ptn-card h3 a{color:#171717;text-decoration:none}.ptn-lead-body p,.ptn-card p{color:#626262;line-height:1.6}.ptn-read{font-size:14px;font-weight:800;color:#b74600;text-decoration:none}.ptn-side-news{display:flex;flex-direction:column;border-top:1px solid var(--ptn-line)}.ptn-side-item{display:grid;grid-template-columns:1fr 118px;gap:20px;padding:18px 0;border-bottom:1px solid var(--ptn-line)}.ptn-side-item h3{font-size:20px;line-height:1.18;margin:5px 0 8px}.ptn-side-thumb{display:block;height:88px;border-radius:10px;overflow:hidden;background:#222;color:var(--ptn-orange);text-decoration:none}.ptn-side-thumb img{width:100%;height:100%;object-fit:cover}.ptn-side-thumb span{display:flex;align-items:center;justify-content:center;height:100%;font-size:30px}.ptn-date{font-size:12px;color:#858585}.ptn-card-grid,.ptn-news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin-top:34px}.ptn-card,.ptn-news-card{border:1px solid var(--ptn-line);border-radius:14px;overflow:hidden;background:#fff}.ptn-card-image,.ptn-news-image{display:block;aspect-ratio:16/9;overflow:hidden;background:#202020;color:var(--ptn-orange);text-decoration:none}.ptn-card-image img,.ptn-news-image img{width:100%;height:100%;object-fit:cover}.ptn-card-image>span{height:100%;display:flex;align-items:center;justify-content:center;font-size:55px}.ptn-card-body,.ptn-news-body{padding:20px}.ptn-card h3,.ptn-news-body h3{font-size:21px;line-height:1.17;margin:8px 0 8px}.ptn-card p,.ptn-news-body p{font-size:14px;margin-bottom:0}.ptn-empty-state{min-height:310px;border:1px solid #ddd;border-radius:20px;padding:44px;display:grid;grid-template-columns:180px 1fr;align-items:center;gap:38px;background:linear-gradient(120deg,#fff,#faf6f2)}.ptn-empty-icon img{width:180px;height:180px;object-fit:cover;border-radius:32px}.ptn-empty-state h3{font-size:34px;line-height:1.15;margin:8px 0 12px}.ptn-empty-state p{max-width:700px;color:#666;line-height:1.65}.ptn-dark-section{background:#141414;color:#fff;padding:72px 0}.ptn-feature-row{display:grid;grid-template-columns:1.25fr .75fr;gap:80px;align-items:center}.ptn-dark-section p{color:#c6c6c6;line-height:1.7;font-size:17px}.ptn-mini-light{color:#ff8a43}.ptn-feature-list{display:grid;grid-template-columns:1fr 1fr;gap:12px}.ptn-feature-list span{padding:15px;border:1px solid #373737;border-radius:10px;color:#eee;background:#1b1b1b}.ptn-sponsor-section{padding:60px 0;background:#fff3ea}.ptn-sponsor-box{display:flex;align-items:center;justify-content:space-between;gap:45px}.ptn-sponsor-box p{color:#6a5a50;line-height:1.6;max-width:760px}.ptn-footer{background:#0e0e0e;color:#aaa;padding:45px 0}.ptn-footer-inner{display:flex;justify-content:space-between;align-items:center;gap:30px}.ptn-footer img{width:250px;height:45px;object-fit:contain;object-position:left;background:#fff;border-radius:4px;padding:3px}.ptn-footer p{margin:8px 0 0}.ptn-footer-links{display:flex;align-items:center;gap:18px;flex-wrap:wrap}.ptn-footer-links a{color:#ddd;text-decoration:none}.ptn-archive{padding:64px 0 90px}.ptn-archive h1{font-size:56px;line-height:1;margin:8px 0 10px;letter-spacing:-.045em}.ptn-archive-intro{font-size:18px;color:#666}.ptn-pagination{margin-top:38px}.ptn-article-wrap{width:min(900px,calc(100% - 42px));margin:0 auto;padding:70px 0 90px}.ptn-article h1{font-size:clamp(42px,6vw,68px);line-height:1.02;letter-spacing:-.045em;margin:10px 0 14px}.ptn-article-meta{color:#888;margin-bottom:25px}.ptn-article-hero{border-radius:18px;overflow:hidden;margin:28px 0}.ptn-article-hero img{display:block;width:100%;height:auto}.ptn-article-content{font-family:Georgia,serif;font-size:20px;line-height:1.75;color:#292929}.ptn-source-box{margin-top:45px;padding:24px;border-left:5px solid var(--ptn-orange);background:#fff4eb}.ptn-source-box p{line-height:1.55;color:#62584f}@media(max-width:900px){.ptn-head-inner{height:auto;min-height:76px;flex-wrap:wrap;padding:10px 0}.ptn-brand img{width:270px;max-width:70vw}.ptn-tagline{display:none}.ptn-topnav{gap:14px}.ptn-hero-inner{grid-template-columns:1fr;min-height:0}.ptn-hero-copy{padding:65px 0 20px}.ptn-hero-mark{justify-content:center;padding-bottom:55px}.ptn-hero-mark img{width:260px}.ptn-lead-grid,.ptn-feature-row{grid-template-columns:1fr}.ptn-card-grid,.ptn-news-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.ptn-sponsor-box{align-items:flex-start;flex-direction:column}.ptn-feature-row{gap:38px}}@media(max-width:620px){.ptn-wrap,.ptn-article-wrap{width:min(100% - 26px,1180px)}.ptn-topnav a:nth-child(2),.ptn-topnav a:nth-child(3){display:none}.ptn-hero h1{font-size:52px}.ptn-hero p{font-size:17px}.ptn-section{padding:45px 0 55px}.ptn-section-head h2,.ptn-dark-section h2,.ptn-sponsor-box h2{font-size:31px}.ptn-section-head>a{display:none}.ptn-lead-body h3{font-size:28px}.ptn-side-item{grid-template-columns:1fr 90px}.ptn-card-grid,.ptn-news-grid{grid-template-columns:1fr}.ptn-empty-state{grid-template-columns:1fr;padding:25px}.ptn-empty-icon img{width:110px;height:110px}.ptn-empty-state h3{font-size:28px}.ptn-feature-list{grid-template-columns:1fr}.ptn-footer-inner{align-items:flex-start;flex-direction:column}.ptn-archive h1{font-size:44px}}
.ptn-video-card .ptn-card-image{position:relative}.ptn-video-card .ptn-card-image:after{content:'▶';position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:56px;height:56px;border-radius:50%;background:#ff6600;color:#fff;display:grid;place-items:center;font-size:22px;box-shadow:0 6px 24px rgba(0,0,0,.3)}.ptn-video-card img{width:100%;height:100%;object-fit:cover}.ptn-video-embed{margin:30px 0;aspect-ratio:16/9}.ptn-video-embed iframe{width:100%;height:100%;border:0}.ptn-video-section{padding-top:10px}

/* v0.3.2 footer and branding refinement */
.ptn-sponsor-box .ptn-btn-dark{background:#111;color:#fff;text-decoration:none}
.ptn-footer{background:#fff;color:#333;padding:34px 0;border-top:4px solid var(--ptn-orange)}
.ptn-footer-inner{display:flex;align-items:center;justify-content:space-between;gap:26px}
.ptn-footer-brand-text{display:flex;flex-direction:column;gap:6px}
.ptn-wordmark{display:flex;align-items:baseline;line-height:1;font-size:40px;font-weight:900;letter-spacing:-.05em}
.ptn-wordmark-plane{color:#1a1a1a}
.ptn-wordmark-talking{color:var(--ptn-orange)}
.ptn-footer-brand-text p{margin:0;color:#666;font-size:14px}
.ptn-footer-links{display:flex;align-items:center;gap:18px;flex-wrap:wrap;justify-content:flex-end}
.ptn-footer-links a{color:#222;text-decoration:none;font-size:13px;font-weight:800}
.ptn-footer-links a:hover{color:var(--ptn-orange)}
.ptn-footer-links span{color:#888;font-size:12px}
@media(max-width:700px){.ptn-footer-inner{align-items:flex-start;flex-direction:column}.ptn-footer-links{justify-content:flex-start}.ptn-wordmark{font-size:32px}}
/* v0.4.0 publication navigation, story discovery and SEO-facing layout */
.ptn-category-nav{background:#111;border-bottom:3px solid var(--ptn-orange);position:sticky;top:0;z-index:40}.admin-bar .ptn-category-nav{top:32px}.ptn-category-nav-scroll{display:flex;align-items:center;gap:0;overflow-x:auto;scrollbar-width:none}.ptn-category-nav-scroll::-webkit-scrollbar{display:none}.ptn-category-nav a{color:#f4f4f4;text-decoration:none;font-size:13px;font-weight:800;white-space:nowrap;padding:13px 15px;border-right:1px solid #2c2c2c}.ptn-category-nav a:hover{background:var(--ptn-orange);color:#111}.ptn-cat-home{background:#202020}.ptn-home-hero{border-bottom:0}.ptn-home-news-grid{display:grid;grid-template-columns:1.45fr .95fr;gap:30px}.ptn-category-art{width:100%;height:100%;min-height:140px;display:flex;flex-direction:column;justify-content:flex-end;align-items:flex-start;padding:24px;position:relative;overflow:hidden;background:linear-gradient(145deg,#181818 0%,#282828 62%,#ff6600 160%);color:#fff}.ptn-category-art:before{content:"";position:absolute;inset:-40%;background:radial-gradient(circle at 75% 20%,rgba(255,102,0,.34),transparent 35%);transform:rotate(-10deg)}.ptn-art-icon{position:absolute;right:26px;top:20px;font-size:76px;line-height:1;color:var(--ptn-orange);font-family:Arial,sans-serif}.ptn-art-label{position:relative;font-size:23px;font-weight:900;letter-spacing:-.02em}.ptn-art-brand{position:relative;margin-top:5px;font-size:11px;font-weight:800;letter-spacing:.13em;color:#bbb}.ptn-art-airlines,.ptn-art-routes-networks{background:linear-gradient(145deg,#18202a,#25374b 65%,#ff6600 150%)}.ptn-art-airports{background:linear-gradient(145deg,#14201d,#24433a 65%,#ff6600 150%)}.ptn-art-military-aviation{background:linear-gradient(145deg,#1e2018,#404531 65%,#ff6600 150%)}.ptn-art-helicopters-rotorcraft{background:linear-gradient(145deg,#20191c,#49313b 65%,#ff6600 150%)}.ptn-art-business-aviation{background:linear-gradient(145deg,#191923,#35354e 65%,#ff6600 150%)}.ptn-art-travel-holidays{background:linear-gradient(145deg,#17202a,#294d62 65%,#ff6600 150%)}.ptn-side-thumb .ptn-category-art{min-height:88px;padding:10px}.ptn-side-thumb .ptn-art-icon{font-size:34px;right:12px;top:8px}.ptn-side-thumb .ptn-art-label,.ptn-side-thumb .ptn-art-brand{display:none}.ptn-home-card-grid{margin-top:34px}.ptn-card-meta{font-size:12px;color:#888;margin-top:12px}.ptn-section-tiles{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.ptn-section-tile{min-height:145px;padding:22px;border:1px solid #363636;border-radius:14px;background:linear-gradient(145deg,#181818,#242424);color:#fff;text-decoration:none;display:flex;flex-direction:column;justify-content:space-between}.ptn-section-tile span{font-size:22px;font-weight:900}.ptn-section-tile b{color:var(--ptn-orange);font-size:13px}.ptn-section-tile:hover{border-color:var(--ptn-orange);transform:translateY(-2px)}.ptn-dark-head h2{color:#fff}.ptn-breadcrumbs{padding-top:28px;display:flex;gap:9px;align-items:center;flex-wrap:wrap;font-size:13px;color:#888}.ptn-breadcrumbs a{color:#555;text-decoration:none}.ptn-breadcrumbs a:hover{color:var(--ptn-orange)}.ptn-article-layout{width:min(1180px,calc(100% - 42px));display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:64px;align-items:start;padding-top:34px}.ptn-article-main h1{font-size:clamp(44px,5.5vw,72px);line-height:.99;letter-spacing:-.05em;margin:15px 0 18px}.ptn-article-cats{display:flex;gap:8px;flex-wrap:wrap}.ptn-article-cats a{padding:7px 10px;border-radius:999px;background:#fff1e7;color:#b44800;text-decoration:none;font-size:11px;font-weight:900;text-transform:uppercase;letter-spacing:.08em}.ptn-article-meta{display:flex;gap:18px;flex-wrap:wrap;color:#888;font-size:14px;margin-bottom:24px}.ptn-article-hero{aspect-ratio:16/9;margin:28px 0;border-radius:18px;overflow:hidden;background:#1b1b1b}.ptn-article-hero img,.ptn-article-hero .ptn-category-art{width:100%;height:100%;object-fit:cover}.ptn-article-hero .ptn-art-icon{font-size:150px}.ptn-article-hero .ptn-art-label{font-size:44px}.ptn-standfirst{font-size:24px;line-height:1.45;font-weight:650;color:#383838;margin:30px 0}.ptn-article-content{font-family:Georgia,serif;font-size:20px;line-height:1.75;color:#292929}.ptn-source-box h3{font-size:24px;margin:6px 0}.ptn-story-nav{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:42px;border-top:1px solid #ddd;padding-top:24px}.ptn-story-nav-item{display:flex;flex-direction:column;gap:5px;color:#222;text-decoration:none;padding:15px;border:1px solid #ddd;border-radius:12px}.ptn-story-nav-item span{font-size:11px;color:#b94c00;font-weight:900;text-transform:uppercase;letter-spacing:.08em}.ptn-story-nav-item strong{font-size:15px;line-height:1.25}.ptn-story-nav-next{text-align:right}.ptn-article-sidebar{position:sticky;top:76px;display:flex;flex-direction:column;gap:20px}.admin-bar .ptn-article-sidebar{top:108px}.ptn-sidebar-box{border:1px solid #ddd;border-radius:14px;padding:22px;background:#fff}.ptn-sidebar-box h3{font-size:22px;margin:7px 0 13px}.ptn-sidebar-box>a:not(.ptn-sidebar-story){display:flex;justify-content:space-between;gap:10px;padding:10px 0;border-top:1px solid #eee;color:#222;text-decoration:none;font-weight:750;font-size:14px}.ptn-sidebar-box>a:hover{color:var(--ptn-orange)}.ptn-sidebar-story{display:block;padding:12px 0;border-top:1px solid #eee;color:#222;text-decoration:none;font-weight:700;line-height:1.25}.ptn-sidebar-story small{display:block;color:#999;font-weight:400;margin-top:4px}.ptn-related{padding-top:20px}.ptn-archive-grid{margin-top:34px}.ptn-archive-intro{max-width:760px}.ptn-archive .ptn-card-image{height:auto}.ptn-card-image .ptn-category-art{aspect-ratio:16/9}.ptn-lead-image .ptn-category-art{aspect-ratio:16/9}.ptn-section-head h2{max-width:700px}.ptn-card h3{margin-bottom:9px}
@media(max-width:1000px){.ptn-home-news-grid,.ptn-article-layout{grid-template-columns:1fr}.ptn-article-sidebar{position:static;display:grid;grid-template-columns:1fr 1fr}.ptn-section-tiles{grid-template-columns:repeat(2,1fr)}}
@media(max-width:782px){.admin-bar .ptn-category-nav{top:46px}}
@media(max-width:680px){.ptn-category-nav a{padding:11px 12px;font-size:12px}.ptn-article-layout{width:min(100% - 26px,1180px);gap:35px}.ptn-article-main h1{font-size:45px}.ptn-article-sidebar{grid-template-columns:1fr}.ptn-story-nav{grid-template-columns:1fr}.ptn-story-nav-next{text-align:left}.ptn-section-tiles{grid-template-columns:1fr 1fr}.ptn-article-hero .ptn-art-icon{font-size:90px}.ptn-article-hero .ptn-art-label{font-size:30px}}

/* v0.5.0 newsroom streams, features, topics and video rail */
.ptn-section-intro{margin:8px 0 0;color:#6a6a6a;max-width:780px;line-height:1.55;font-size:15px}
.ptn-feature-grid{display:grid;grid-template-columns:minmax(0,1.45fr) minmax(320px,.8fr);gap:28px}
.ptn-feature-lead{background:#fff;border:1px solid var(--ptn-line);border-radius:20px;overflow:hidden;box-shadow:0 16px 45px rgba(0,0,0,.06)}
.ptn-feature-image{display:block;aspect-ratio:16/8.5;overflow:hidden;background:#171717;text-decoration:none}
.ptn-feature-image img,.ptn-feature-image>.ptn-category-art{width:100%;height:100%;object-fit:cover}
.ptn-feature-copy{padding:28px}.ptn-feature-copy h2{font-size:36px;line-height:1.08;letter-spacing:-.035em;margin:10px 0}.ptn-feature-copy h2 a{color:#171717;text-decoration:none}.ptn-feature-copy p{color:#5f5f5f;line-height:1.6}
.ptn-feature-side{display:grid;grid-template-columns:1fr;gap:16px}.ptn-feature-side .ptn-card{display:grid;grid-template-columns:150px 1fr}.ptn-feature-side .ptn-card-image{aspect-ratio:auto;min-height:145px}.ptn-feature-side .ptn-card-body{padding:16px}.ptn-feature-side .ptn-card-body p{display:none}
.ptn-brief-badge,.ptn-feature-badge{display:inline-flex;margin-left:8px;padding:4px 7px;border-radius:5px;font-size:9px;letter-spacing:.12em;font-weight:900;vertical-align:middle}.ptn-brief-badge{background:#f1f1f1;color:#555}.ptn-feature-badge{background:#fff0e6;color:#b74800}
.ptn-brief-list{border-top:1px solid var(--ptn-line)}
.ptn-brief-row{display:grid;grid-template-columns:minmax(0,1fr) 150px;gap:28px;padding:25px 0;border-bottom:1px solid var(--ptn-line);align-items:center}.ptn-brief-row h3{font-size:24px;line-height:1.18;margin:6px 0 8px}.ptn-brief-row h3 a{color:#161616;text-decoration:none}.ptn-brief-row h3 a:hover{color:#b94700}.ptn-brief-row p{margin:0;color:#5f5f5f;line-height:1.55}.ptn-brief-meta{display:flex;gap:10px;align-items:center;flex-wrap:wrap;color:#888;font-size:11px}.ptn-brief-action{text-align:right}.ptn-brief-action a{display:inline-flex;padding:10px 12px;border:1px solid #ddd;border-radius:7px;color:#222;text-decoration:none;font-size:12px;font-weight:800}.ptn-brief-action a:hover{border-color:var(--ptn-orange);color:#b74800}
.ptn-topic-links{display:flex;gap:7px;flex-wrap:wrap;margin:10px 0}.ptn-topic-links a{display:inline-flex;padding:5px 8px;border-radius:999px;background:#f5f5f5;color:#555;text-decoration:none;font-size:11px;font-weight:700}.ptn-topic-links a:hover{background:#fff0e6;color:#b74800}
.ptn-card-foot{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-top:15px;font-size:11px;color:#888}.ptn-card-foot a{color:#b74800;text-decoration:none;font-weight:800}
.ptn-video-rail{display:grid;grid-auto-flow:column;grid-auto-columns:minmax(270px,32%);gap:20px;overflow-x:auto;padding:2px 2px 18px;scroll-snap-type:x mandatory}.ptn-video-tile{scroll-snap-align:start;border:1px solid var(--ptn-line);border-radius:14px;overflow:hidden;background:#fff}.ptn-video-thumb{position:relative;display:block;aspect-ratio:16/9;background:#181818}.ptn-video-thumb img{width:100%;height:100%;object-fit:cover}.ptn-video-thumb span{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:52px;height:52px;border-radius:50%;display:grid;place-items:center;background:var(--ptn-orange);color:#fff;font-size:20px;box-shadow:0 5px 20px rgba(0,0,0,.3)}.ptn-video-tile>div{padding:16px}.ptn-video-tile small{color:#bd4c00;font-weight:800;text-transform:uppercase;letter-spacing:.08em}.ptn-video-tile h3{font-size:18px;line-height:1.2;margin:7px 0}.ptn-video-tile h3 a{color:#1b1b1b;text-decoration:none}
.ptn-archive-features,.ptn-archive-briefs{margin-top:45px}.ptn-archive-features h2,.ptn-archive-briefs h2,.ptn-related-section h2{font-size:32px;line-height:1.1;letter-spacing:-.025em}
.ptn-related-section{margin-top:55px;padding-top:34px;border-top:1px solid var(--ptn-line)}.ptn-related-list{display:grid;gap:10px}.ptn-related-list>a{display:flex;justify-content:space-between;gap:25px;padding:16px;border:1px solid #e3e3e3;border-radius:10px;text-decoration:none;color:#222;background:#fff}.ptn-related-list>a:hover{border-color:var(--ptn-orange)}.ptn-related-list span{color:#a94700;font-size:12px;white-space:nowrap}
.ptn-breadcrumb{display:flex;gap:8px;align-items:center;font-size:12px;color:#888;margin-bottom:28px}.ptn-breadcrumb a{color:#666;text-decoration:none}
.ptn-article .ptn-topic-links{margin:14px 0 24px}.ptn-card-brief{box-shadow:none}.ptn-card-feature{box-shadow:0 10px 28px rgba(0,0,0,.05)}
@media(max-width:900px){.ptn-feature-grid{grid-template-columns:1fr}.ptn-feature-side{grid-template-columns:repeat(2,1fr)}.ptn-feature-side .ptn-card{grid-template-columns:1fr}.ptn-video-rail{grid-auto-columns:minmax(280px,70%)}}
@media(max-width:620px){.ptn-feature-copy h2{font-size:29px}.ptn-feature-side{grid-template-columns:1fr}.ptn-brief-row{grid-template-columns:1fr;gap:12px}.ptn-brief-action{text-align:left}.ptn-video-rail{grid-auto-columns:88%}.ptn-related-list>a{flex-direction:column;gap:6px}.ptn-related-list span{white-space:normal}}

/* v0.5.2 unified navigation and true YouTube chronology */
.ptn-shell-header{position:relative;top:auto;z-index:51;background:#fff;border-bottom:1px solid var(--ptn-line);backdrop-filter:none}
.ptn-head-inner-simple{height:72px;justify-content:flex-start}
.ptn-head-inner-simple .ptn-brand img{height:52px;width:min(330px,36vw)}
.ptn-topnav{display:none!important}
.ptn-category-nav{position:sticky;top:0;z-index:50}
.admin-bar .ptn-category-nav{top:32px}
.ptn-video-page{padding:38px 0 80px}
.ptn-video-article{max-width:1120px;margin:0 auto}
.ptn-video-article h1{font-size:clamp(38px,5vw,66px);line-height:1.04;letter-spacing:-.04em;margin:10px 0 14px}
.ptn-video-meta{display:flex;flex-wrap:wrap;gap:12px 20px;color:#777;font-size:14px;margin:0 0 24px}
.ptn-video-article .ptn-video-embed{width:100%;margin:22px 0 24px;aspect-ratio:16/9;background:#111;border-radius:14px;overflow:hidden}
.ptn-video-summary{font-size:19px;line-height:1.55;max-width:900px;color:#444}
.ptn-video-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin-top:24px}
.ptn-video-related{margin-top:56px;border-top:1px solid #e5e5e5;padding-top:36px}
.ptn-video-related h2{font-size:34px;margin:7px 0 0}
.ptn-video-card-date{font-size:12px;color:#888;margin:6px 0 0}
.ptn-video-tile small{display:block;color:#777;font-size:12px;line-height:1.35;margin-bottom:6px}
@media(max-width:900px){.ptn-video-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.ptn-head-inner-simple .ptn-brand img{width:280px;max-width:72vw}.ptn-head-inner-simple{height:68px}}
@media(max-width:620px){.ptn-video-grid{grid-template-columns:1fr}.ptn-video-page{padding-top:24px}.ptn-video-article h1{font-size:40px}.ptn-head-inner-simple{height:62px}.ptn-head-inner-simple .ptn-brand img{height:45px}.ptn-tagline{display:none}}

/* v0.6 Press Room */
.ptn-pr-badge{display:inline-block;background:#ff6600;color:#111;font-size:11px;font-weight:900;letter-spacing:.1em;text-transform:uppercase;padding:6px 9px;border-radius:4px;margin:0 8px 8px 0}
.ptn-press-section{background:#fff}.ptn-pr-card .ptn-card-body small{display:block;color:#777;margin:2px 0 8px}.ptn-pr-card .ptn-card-image{background:#f3f3f3}