:root{font-family:'Leelawadee UI','Noto Sans Thai',Tahoma,system-ui,sans-serif;font-size:16px;line-height:1.75;color:#17253b;background:#f7f9fc;--accent:#7036d9;--strong:#5423ad;--tint:#f3efff;--line:#e3e8f0;--muted:#57677c;color-scheme:light}*{box-sizing:border-box}body{margin:0}body[data-app=airclinic]{--accent:#087fb8;--strong:#075779;--tint:#ecf7fd}button,input{font:inherit}button,a,input{touch-action:manipulation;-webkit-tap-highlight-color:#dce5f455}button{cursor:pointer;border:1px solid var(--line);background:white;color:inherit;border-radius:9px;padding:8px 14px;min-height:44px}a{color:var(--strong)}button:hover{background:var(--tint);border-color:var(--accent)}a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid var(--accent);outline-offset:3px}header{height:72px;position:sticky;top:0;z-index:30;display:flex;align-items:center;gap:12px;padding:0 28px;border-bottom:1px solid var(--line);background:#fff}.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:inherit;font-weight:750;font-size:21px}.brand img{width:34px;height:34px;object-fit:contain}.brand small{font-size:12px;font-weight:400;color:var(--muted);display:block}.header-right{display:flex;align-items:center;gap:8px;margin-left:auto}.version{font-size:12px;color:var(--muted);margin:0 8px}body[data-app=airclinic] .brand img{width:112px;height:auto}#menu,#nav-close{display:none}.layout{display:grid;grid-template-columns:280px minmax(0,1fr);max-width:1600px;margin:auto}#nav{position:sticky;top:72px;height:calc(100dvh - 72px);overflow-y:auto;background:#fff;border-right:1px solid var(--line);padding:24px 16px;scrollbar-width:thin;overscroll-behavior:contain}.nav-label{font-size:12px;font-weight:700;letter-spacing:.02em;color:var(--muted);padding:0 12px 16px}#nav details{margin-bottom:10px}#nav summary{cursor:pointer;font-size:14px;font-weight:650;padding:10px 8px;min-height:44px}#nav a{display:block;padding:10px 12px;margin:3px 0 3px 10px;border-left:2px solid transparent;text-decoration:none;font-size:14px;line-height:1.6;color:var(--muted);border-radius:0 8px 8px 0;min-height:44px}#nav a:hover,#nav a[aria-current]{background:var(--tint);color:var(--strong);border-color:var(--accent)}main{min-width:0;width:100%;max-width:1140px;padding:36px 48px 64px;margin:0 auto}.hero{padding:4px 0 24px;max-width:780px}.eyebrow{font-size:12px;color:var(--accent);font-weight:700;margin-bottom:8px}.hero h1{font-size:34px;line-height:1.4;letter-spacing:-.025em;margin:8px 0 12px;text-wrap:balance}.hero p{color:var(--muted);font-size:16px;margin:0;max-width:680px}.find{padding:0 0 12px;max-width:880px}.find label{display:block;font-weight:650;font-size:15px;margin:0 0 8px}.search-row{display:flex;gap:8px}#search{width:100%;min-width:0;font-size:16px;padding:12px 16px;border:1px solid #becbda;background:#fff;border-radius:10px;height:50px}#clear{white-space:nowrap}#search-state{font-size:13px;color:var(--muted);min-height:23px;margin:8px 0 12px}.topics{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin:0 0 28px}.topic{display:flex;flex-direction:column;text-decoration:none;background:#fff;border:1px solid var(--line);border-radius:12px;padding:22px 18px;gap:12px;min-height:132px;color:inherit;box-shadow:0 2px 4px #17253b03}.topic:hover{border-color:var(--accent);background:var(--tint)}.topic strong{font-size:17px;line-height:1.6}.topic>span{color:var(--muted);font-size:13px;margin-top:auto}.topic b{float:right;color:var(--accent)}.intro{border-top:1px solid var(--line);padding:20px 0;max-width:800px;color:var(--muted);font-size:14px}.intro h2{color:#17253b;font-size:18px;margin:0 0 12px}.intro ol{padding-left:24px}.intro p{font-size:13px}#breadcrumb{font-size:13px;display:flex;flex-wrap:wrap;gap:6px;align-items:center;color:var(--muted);margin:0 0 24px}#breadcrumb:empty{display:none}#breadcrumb a{text-decoration:none;min-height:32px;display:inline-flex;align-items:center}article{padding:0;border:0;scroll-margin-top:96px}article h2{font-size:30px;line-height:1.5;letter-spacing:-.02em;text-wrap:balance;margin:8px 0 16px;max-width:850px}.role{color:var(--muted);font-size:14px;margin:0 0 24px}article>ol{counter-reset:steps;list-style:none;padding:0;max-width:800px;margin:26px 0}article>ol>li{counter-increment:steps;position:relative;padding:0 0 20px 46px;margin:0;min-height:48px;line-height:1.85;font-size:17px}article>ol>li:before{content:counter(steps);position:absolute;left:0;top:0;width:30px;height:30px;display:grid;place-items:center;background:var(--tint);color:var(--strong);font-weight:700;border:1px solid var(--line);border-radius:50%;font-size:14px}aside{max-width:800px;border-left:3px solid var(--accent);background:var(--tint);padding:16px 20px;border-radius:0 10px 10px 0;margin:12px 0 28px;font-size:15px}aside strong{color:var(--strong)}aside p{margin:5px 0 0;line-height:1.8}figure{margin:28px 0;max-width:100%}.zoom{display:block;width:100%;padding:0;overflow:hidden;cursor:zoom-in;background:#fff;border:1px solid #d6dfeb;border-radius:12px;box-shadow:0 4px 20px #17253b06}.zoom img{display:block;width:100%;height:auto;max-height:none}.zoom.portrait{max-width:430px;margin-inline:auto}.zoom.portrait img{width:100%}figcaption{font-size:12px;color:var(--muted);padding:10px 2px;line-height:1.7;text-align:center}#results{display:grid;gap:10px;margin:8px 0 30px}#results h2{font-size:24px;margin:0 0 14px}.result{display:block;background:#fff;border:1px solid var(--line);padding:18px 22px;border-radius:10px;text-decoration:none;color:inherit}.result:hover{border-color:var(--accent);background:var(--tint)}.result small{display:block;color:var(--muted);font-size:12px;margin-bottom:3px}.result strong{font-size:17px;font-weight:650}.result p{font-size:14px;color:var(--muted);margin:7px 0 0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}#pager{display:grid;grid-template-columns:1fr 1fr;gap:14px;border-top:1px solid var(--line);padding:24px 0;margin-top:32px}#pager:empty{display:none}#pager a{padding:16px;background:#fff;border:1px solid var(--line);border-radius:10px;text-decoration:none;font-size:15px;color:inherit;min-width:0}#pager a:hover{border-color:var(--accent)}#pager small{display:block;color:var(--muted);font-size:12px;margin-bottom:6px}footer{font-size:12px;color:var(--muted);padding:28px 0;border-top:1px solid var(--line);margin-top:30px}#empty{padding:24px;background:var(--tint);border-radius:10px}dialog{border:0;border-radius:14px;padding:0;width:calc(100vw - 64px);max-width:1600px;height:calc(100dvh - 64px);max-height:none;overflow:hidden;box-shadow:0 18px 70px #0005;background:#eef2f7}dialog::backdrop{background:#111b2bd9}.viewer-bar{display:flex;align-items:center;gap:10px;padding:12px 18px;background:#fff;border-bottom:1px solid var(--line);min-height:68px}.viewer-bar span{margin-right:auto;font-size:14px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.viewer-bar button{white-space:nowrap}.image-stage{height:calc(100% - 108px);overflow:auto;overscroll-behavior:contain;padding:18px;display:block}#large-image{display:block;width:auto;height:auto;max-width:100%;max-height:100%;object-fit:contain;margin:auto}.image-stage.actual #large-image{max-width:none;max-height:none;margin:0}dialog>p{font-size:12px;color:var(--muted);margin:0;padding:9px 18px}.skip{position:fixed;left:16px;top:-100px;z-index:100;background:#fff;padding:12px}.skip:focus{top:8px}[hidden]{display:none!important}.nav-open{overflow:hidden}#nav-overlay{position:fixed;inset:64px 0 0;border:0;border-radius:0;background:#17253b70;z-index:35}.reading .find{margin-bottom:18px}.reading .find label{display:none}.reading #search-state{display:none}.reading .search-row{max-width:600px}.reading #search{height:44px;font-size:15px}.reading #clear{display:none}
@media(min-width:1600px){main{padding-inline:64px}}
@media(max-width:1150px){.layout{grid-template-columns:250px minmax(0,1fr)}main{padding:30px}.topics{grid-template-columns:repeat(2,minmax(0,1fr))}.version{display:none}}
@media(max-width:800px){header{height:64px;padding:0 16px;gap:10px}#menu{display:block;padding:6px 12px}.brand{font-size:18px}.brand small,.version{display:none}.brand img{width:30px;height:30px}.header-right{gap:6px}#find-button{display:none}#print{font-size:13px;padding:6px 12px}.layout{display:block}#nav{display:none;position:fixed;top:64px;left:0;width:min(340px,88vw);height:calc(100dvh - 64px);z-index:40;box-shadow:10px 0 40px #17253b25}#nav.open{display:block}#nav-close{display:block;width:100%;margin-bottom:20px;text-align:right}.nav-label{padding-bottom:10px}main{padding:24px 20px 40px}.hero{padding-bottom:20px}.hero h1{font-size:27px}.hero p{font-size:15px}.topics{gap:10px}.topic{padding:17px 14px;min-height:116px}.topic strong{font-size:15px}.topic>span{font-size:12px}article h2{font-size:25px}article>ol>li{font-size:16px;padding-left:42px;padding-bottom:18px}aside{font-size:14px;padding:14px 16px}.eyebrow{font-size:12px}.zoom{border-radius:8px}.zoom.portrait{max-width:360px}figcaption{font-size:12px}#breadcrumb{margin-bottom:18px}#pager{gap:10px}#pager a{font-size:14px;padding:14px}dialog{width:100vw;height:100dvh;border-radius:0;margin:0}.viewer-bar{padding:10px;gap:8px}.viewer-bar span{font-size:12px}.viewer-bar button{font-size:12px;padding:6px 10px}.image-stage{padding:10px}body[data-app=airclinic] .brand img{width:98px}.result{padding:16px}.result strong{font-size:16px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}
@media print{header,#nav,.find,.topics,#breadcrumb,#pager,#results,.skip,dialog,#nav-overlay,#empty{display:none!important}.layout{display:block}main{max-width:none;padding:0}body{background:#fff}.hero{padding:0}.intro{break-after:page}article{break-before:page}body.print-all article[hidden]{display:block!important}.zoom{border:0;box-shadow:none}figure{break-inside:avoid}.zoom img{max-height:640px;object-fit:contain}.zoom.portrait{max-width:320px}footer{display:none}@page{size:A4;margin:16mm}}
/* Visual edition 2: local Thai typography and an illustrated help center. */
@font-face{font-family:ManualThai;src:url('NotoSansThai.ttf') format('truetype');font-weight:100 900;font-style:normal;font-display:swap}
:root{font-family:ManualThai,system-ui,sans-serif;background:#f6f8fc;color:#23334c;--muted:#64728a}header{height:78px;border-bottom:1px solid #e9edf5;padding-inline:28px}.brand small{font-size:12px}.layout{grid-template-columns:264px minmax(0,1fr);max-width:1680px}#nav{top:78px;height:calc(100dvh - 78px);padding:30px 14px;background:linear-gradient(180deg,#fff,#fafbff)}.nav-label{font-size:11px;letter-spacing:.05em;color:#8290a5;margin-bottom:6px}#nav details{margin-bottom:6px}#nav summary{list-style:none;display:flex;gap:12px;align-items:center;font-size:13px;font-weight:550;padding:14px 10px;border-radius:10px;color:#46546d}#nav summary::-webkit-details-marker{display:none}#nav summary:after{content:'⌄';margin-left:auto;font-size:16px;color:#9aa6b8}#nav details[open]>summary{color:var(--strong);background:var(--tint)}#nav summary svg{width:20px;height:20px;flex:none;color:#8a99b1}#nav details[open] summary svg{color:var(--accent)}#nav a{font-size:12px;line-height:1.75;margin-left:19px;padding-left:22px}main{max-width:1190px;padding:32px 40px 50px}.hero{overflow:hidden;position:relative;isolation:isolate;max-width:none;border-radius:22px;padding:36px 40px 38px;margin-bottom:24px;color:white;background:linear-gradient(110deg,#06395e,#05648c 70%,#1598b2);min-height:260px;box-shadow:0 12px 30px #07577913}.hero:after{content:'';position:absolute;z-index:-1;width:520px;height:520px;border:1px solid #ffffff12;border-radius:50%;right:-140px;top:-200px;box-shadow:0 0 0 60px #ffffff04,0 0 0 120px #ffffff03}.hero .eyebrow{color:#b6e9f3;font-size:12px;font-weight:550;letter-spacing:.01em;display:inline-block;border:1px solid #ffffff30;border-radius:30px;padding:4px 12px;background:#ffffff0a}.hero h1{font-size:36px;font-weight:650;line-height:1.5;margin:14px 0 10px;max-width:65%;letter-spacing:-.03em}.hero h1 span{color:#9ee3ef}.hero p{max-width:58%;font-size:14px;line-height:1.9;color:#d0e8ef}body[data-app=airchat] .hero{background:linear-gradient(110deg,#30205e,#5a35a7 72%,#8a61d2)}body[data-app=airchat] .hero h1 span{color:#d8c5ff}body[data-app=airchat] .hero .eyebrow{color:#e5d7ff}body[data-app=airchat] .hero p{color:#e1d9ef}.hero-art{position:absolute;right:28px;top:24px;width:280px;height:240px}.art-sheet{position:absolute;width:202px;height:205px;right:26px;top:12px;background:#ffffffed;border-radius:16px;padding:18px;transform:rotate(7deg);box-shadow:0 16px 40px #08254440}.art-sheet-head{display:flex;gap:4px;border-bottom:1px solid #d9e5ed;padding-bottom:12px}.art-sheet-head i{width:5px;height:5px;border-radius:50%;background:#b5cddd}.art-lines{display:flex;flex-direction:column;gap:7px;margin:14px 0}.art-lines b{height:7px;width:65%;background:#4a9cbc;border-radius:3px}.art-lines span{height:4px;width:90%;background:#d3e1eb;border-radius:3px}.art-lines span:last-child{width:70%}.art-row{display:flex;align-items:center;gap:10px;margin:12px 0}.art-row i{font-size:10px;font-style:normal;background:#e4f4f8;color:#26779a;border-radius:5px;width:21px;height:21px;display:grid;place-items:center}.art-row span{height:5px;width:80px;background:#dbe6ed;border-radius:3px}.art-row b{color:#39a886;font-size:11px}.art-badge{position:absolute;bottom:2px;left:6px;background:white;border:1px solid #e1eaf0;border-radius:12px;color:#136079;font-size:12px;font-weight:550;padding:12px 16px;box-shadow:0 10px 24px #08254425;transform:rotate(-4deg)}body[data-app=airchat] .art-badge{color:#6235ac}.art-orbit{position:absolute;border:1px dashed #ffffff35;width:250px;height:240px;border-radius:50%;right:0}.find{background:#fff;border:1px solid #e5eaf2;border-radius:16px;padding:20px 22px 4px;max-width:none;margin-bottom:28px;box-shadow:0 4px 16px #28375803}.find label{font-size:16px;font-weight:600;margin-bottom:10px}.search-row input{border-color:#e0e7ef!important;background:#f9fbfe!important;height:48px!important}.search-row input:focus{background:#fff!important}.search-row button{border-color:#e0e7ef;color:var(--muted)}#search-state{font-size:12px;margin-bottom:12px}.section-heading{display:flex;align-items:baseline;gap:10px;justify-content:space-between;margin:0 0 16px}.section-heading h2{font-size:19px;font-weight:650;margin:0}.section-heading>span{font-size:12px;color:var(--muted)}.topics{gap:16px}.topic{position:relative;min-height:210px;border:1px solid #e6eaf2;border-radius:16px;padding:22px;gap:10px;box-shadow:0 3px 12px #24364b03;transition:transform .18s,box-shadow .18s,border-color .18s}.topic:hover{transform:translateY(-3px);background:#fff;box-shadow:0 12px 26px #24364b10;border-color:var(--accent)}.category-icon{width:44px;height:44px;display:grid;place-items:center;border-radius:12px;background:#eaf5ff;color:#2585c1;margin-bottom:4px}.category-icon svg{width:25px;height:25px}.tone-1 .category-icon{background:#e8f8f1;color:#219672}.tone-2 .category-icon{background:#f3ecfd;color:#9261c6}.tone-3 .category-icon{background:#fff4e6;color:#c38a39}.tone-4 .category-icon{background:#e7f6fa;color:#368eaa}.tone-5 .category-icon{background:#ffedf2;color:#c3678c}.tone-6 .category-icon{background:#eef0ff;color:#6f7ac8}.tone-7 .category-icon{background:#edf3f7;color:#6b839a}.topic strong{font-size:16px;font-weight:650;line-height:1.65}.topic p{font-size:12px;line-height:1.8;color:var(--muted);margin:0 0 8px}.topic>span{display:flex;justify-content:space-between;align-items:center;font-size:11px;padding-top:12px;border-top:1px solid #edf0f6}.topic b{font-size:18px;line-height:1;font-weight:400;width:26px;height:26px;display:grid;place-items:center;background:#f3f7fb;border-radius:50%}.intro{max-width:none;border:1px solid #e3eaf4;background:#edf4fc;border-radius:16px;padding:22px 28px;font-size:13px}.intro h2{font-size:16px;color:#315a81}.intro ol{columns:2;column-gap:36px}.intro li{break-inside:avoid;padding-bottom:7px;line-height:1.9}.intro p{font-size:12px;margin-bottom:0;max-width:900px}footer{text-align:center;border-top:none;font-size:11px;margin-top:20px;color:#8490a2}article{background:#fff;border:1px solid #e5eaf2;border-radius:18px;padding:30px 32px}article h2{font-size:28px;font-weight:650}article>ol>li{font-size:16px;line-height:1.95}article .eyebrow{font-weight:500}article aside{font-size:14px}.reading .find{border:0;background:transparent;padding:0;box-shadow:none}.reading .section-heading{display:none}body:has(#results:not([hidden])) .section-heading{display:none}#breadcrumb{font-size:12px}.result{box-shadow:0 2px 6px #24364b03;border-radius:12px}.result strong{font-weight:600}.role{font-size:12px}.viewer-bar{font-family:ManualThai,sans-serif}
@media(max-width:1150px){.layout{grid-template-columns:235px minmax(0,1fr)}main{padding:28px}.hero{padding:30px;min-height:245px}.hero h1{font-size:30px;max-width:70%}.hero-art{transform:scale(.78);transform-origin:top right;right:8px;top:40px}.hero p{max-width:62%}.topics{gap:14px}.topic{padding:20px;min-height:200px}}
@media(max-width:950px) and (min-width:801px){.hero-art{opacity:.35;right:-70px;top:65px}.hero h1,.hero p{max-width:86%}.hero{min-height:250px}.section-heading{align-items:flex-start;flex-direction:column;gap:3px}.intro ol{columns:1}}
@media(max-width:800px){header{height:64px;padding-inline:16px}.layout{display:block}#nav{top:64px;height:calc(100dvh - 64px)}main{padding:20px 16px}.hero{border-radius:18px;padding:26px;min-height:230px;margin-bottom:18px}.hero h1{font-size:29px;max-width:70%}.hero p{max-width:68%;font-size:13px}.hero-art{transform:scale(.65);right:0;top:46px;opacity:.85}.find{padding:16px 16px 2px;border-radius:14px;margin-bottom:24px}.find label{font-size:15px}.section-heading{align-items:flex-start;flex-direction:column;gap:4px;margin-bottom:14px}.section-heading h2{font-size:17px}.section-heading>span{font-size:11px}.topic{padding:16px;min-height:208px;gap:8px;border-radius:14px}.topic strong{font-size:14px}.topic p{font-size:11px}.category-icon{width:38px;height:38px;border-radius:10px}.category-icon svg{width:22px;height:22px}.topic>span{font-size:10px}.intro{padding:20px}.intro ol{columns:1}article{padding:24px 20px;border-radius:14px}article h2{font-size:23px}article>ol>li{font-size:15px}.reading .find{margin-bottom:20px}.reading #breadcrumb{margin-bottom:16px}.hero .eyebrow{font-size:10px}.topics{gap:12px}}
@media(max-width:480px){.hero-art{display:none}.hero h1,.hero p{max-width:100%}.hero{min-height:0;padding:26px}.hero h1{font-size:28px}.hero p{font-size:13px}.intro li{font-size:12px}#nav summary{font-size:13px}}
@media print{.hero-art,.section-heading{display:none!important}.hero{color:#17253b;background:#fff;box-shadow:none}.hero p,.hero h1 span{color:#17253b}.hero h1,.hero p{max-width:100%}.hero .eyebrow{color:#17253b}.intro{background:white}.intro ol{columns:1}article{border:0;padding:0}.topic:hover{transform:none}}
.manual-detail{border:1px solid var(--line);border-radius:12px;padding:0 20px;margin:24px 0;background:#fff}.manual-detail>summary{font-size:18px;font-weight:650;cursor:pointer;padding:18px 0;min-height:48px;color:var(--strong)}.manual-detail>p{font-size:14px;color:var(--muted)}.control-list{margin:20px 0}.control-list>div{display:grid;grid-template-columns:minmax(150px,30%) 1fr;gap:20px;padding:16px 0;border-top:1px solid var(--line)}.control-list dt{font-size:14px;font-weight:650;color:var(--strong)}.control-list dd{margin:0;font-size:14px;line-height:1.9}.manual-detail figure{margin:16px 0}.manual-detail figure+figure{margin-top:24px}@media(max-width:800px){.manual-detail{padding:0 12px}.manual-detail>summary{font-size:16px}.control-list>div{grid-template-columns:1fr;gap:6px}.control-list dd{font-size:14px}}