/* 바다 사진과 읽기 편한 타이포그래피를 중심으로 공통 화면을 구성한다. */
:root{--abyss:#112f36;--navy:#193d44;--blue:#345f67;--cyan:#d2e5dc;--foam:#e9ede6;--sand:#f5f3ed;--ink:#162e34;--muted:#5d6b69;--line:rgba(22,46,52,.22);--ease:cubic-bezier(.22,1,.36,1)}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:104px}
body{margin:0;color:var(--ink);background:var(--sand);font-family:Pretendard,"Noto Sans KR","Malgun Gothic",sans-serif;font-size:16px;line-height:1.75;letter-spacing:-.015em;word-break:keep-all;overflow-wrap:break-word}
img{display:block;width:100%;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid #268b90;outline-offset:6px}
.shell{width:min(1200px,calc(100% - 112px));margin-inline:auto}
.skip-link{position:fixed;z-index:100;top:12px;left:12px;padding:10px 14px;background:var(--cyan);color:var(--abyss);transform:translateY(-170%)}
.skip-link:focus{transform:none}
.site-header{position:sticky;top:0;z-index:50;color:var(--ink);background:var(--sand)}
.site-header.scrolled{position:sticky;top:0;background:rgba(245,243,237,.97);backdrop-filter:blur(16px)}
.nav-wrap{height:80px;display:flex;align-items:center;justify-content:space-between;gap:28px;border-bottom:1px solid var(--line)}
.wordmark{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand-logo-crop{width:44px;height:44px;flex:none}
.brand-logo-crop img{width:100%;height:100%;object-fit:contain}
.wordmark>span:last-child{display:flex;flex-direction:column;line-height:1}
.wordmark strong{font-size:14px;font-weight:750;letter-spacing:.13em}
.wordmark small{margin-top:8px;color:var(--muted);font-size:9px;letter-spacing:.17em}
.nav{display:flex;align-items:center;white-space:nowrap;gap:6px;font-size:13px;font-weight:550}
.nav>a{padding:10px 12px;border:1px solid var(--line);border-radius:10px;color:var(--ink)}
.nav>a:hover{color:var(--blue);background:#e5e8e1}
.nav .nav-contact{padding:10px 17px;border:1px solid var(--ink);border-radius:12px}
.nav-contact span{margin-left:18px}
.nav-toggle{display:none}
.hero{position:relative;padding:28px 0 0;color:var(--ink);background:var(--sand)}
.hero-inner{display:grid;grid-template-columns:1fr 1fr;gap:64px;padding:0 0 40px;align-items:center}
.hero-copy{display:flex;flex-direction:column;align-items:flex-start;padding-top:0;min-width:0}
.kicker{margin:0 0 22px;color:var(--muted);font-size:13px;font-weight:500;letter-spacing:.04em}

.hero-copy h1{margin:0;font-size:clamp(34px,3.3vw,48px);font-weight:600;line-height:1.38;letter-spacing:-.045em}
.hero-copy h1 em{font-family:inherit;color:var(--blue);font-style:normal}
.hero-lead{max-width:420px;margin:24px 0 0;color:var(--muted);font-size:16px;line-height:1.8}
.hero-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.hero-actions .button{width:auto;height:auto;min-height:50px;padding:12px 18px;display:inline-flex;align-items:center;justify-content:space-between;gap:22px;border:1px solid var(--ink);border-radius:12px;background:transparent;color:var(--ink);font-size:14px;font-weight:550;line-height:1.5;transition:background .2s,color .2s}
.hero-actions .button.primary{color:var(--sand);background:var(--ink)}
.hero-actions .button.ghost{background:transparent;border-color:var(--line)}
.hero-actions .button:hover{background:var(--blue);color:#fff}
.section{padding:60px 0}
.section-head{display:block;max-width:760px;margin-bottom:30px}
.section-index,.overline{margin:0 0 12px;color:var(--blue);font-size:13px;font-weight:550;letter-spacing:0}
.section-head h1,.section-head h2,.approach h2,.contact h2{margin:0;font-size:clamp(30px,2.8vw,40px);font-weight:550;line-height:1.35;letter-spacing:-.045em}
.section-head h1 em,.section-head h2 em,.approach h2 em,.contact h2 em{color:var(--blue);font-style:normal}
.section-head>p:last-child{max-width:580px;margin:18px 0 0;color:var(--muted);font-size:15px}
.section-head.inverse{color:#fff}
.section-head.inverse .section-index,.section-head.inverse h2 em{color:var(--cyan)}
.section-head.inverse>p:last-child{color:#b5c8cf}
.profile{background:var(--sand)}
main.profile.section{padding-top:56px}
body:has(main.profile.section) .site-header{background:var(--sand)}
.profile-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
 .profile-photo{position:relative;margin:0;height:490px;overflow:hidden;background:var(--navy);border-radius:24px}
.profile-photo:after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,#031923a8,transparent 38%)}
.profile-photo img{height:100%;object-fit:cover;object-position:center 52%}
.profile-photo figcaption{position:absolute;z-index:2;inset:auto 24px 22px;display:block;color:#fff;font-size:12px;letter-spacing:0}
.overline{margin-bottom:18px}
.profile-story h3,.profile-story h2{margin:0;padding-bottom:0;font-size:24px;font-weight:600;line-height:1.3;letter-spacing:-.045em}
.profile-story h3 span,.profile-story h2 span{display:inline-block;margin-left:12px;color:var(--muted);font-size:11px;letter-spacing:.15em}
.profile-story>.lead{margin:18px 0 12px;font-size:18px;font-weight:500;line-height:1.65}
.profile-story>p:not(.overline,.lead){color:var(--muted);font-size:15px}
.profile-facts{display:grid;grid-template-columns:1fr 1fr;gap:0 24px;margin:22px 0 0;border-top:1px solid var(--line)}
.profile-facts div{padding:12px 0;display:grid;gap:3px;grid-template-columns:1fr;align-items:center;border-bottom:1px solid var(--line)}
.profile-facts dt{color:var(--blue);font-size:10px;font-weight:650;letter-spacing:.12em}
.profile-facts dd{margin:0;font-size:14px;font-weight:550}
.courses{color:var(--ink);background:#e9ede6}
.approach{background:var(--sand)}
.approach-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:64px}
.approach-intro{position:static;align-self:start}
.approach-intro .section-index{margin-bottom:16px}
.approach-intro>p:last-child{max-width:340px;margin-top:24px;color:var(--muted)}
.principles{margin:0;padding:0;list-style:none;border-top:1px solid var(--line)}
.principles li{padding:32px 0;display:grid;grid-template-columns:40px 1fr;gap:16px;border-bottom:1px solid var(--line)}
.principles>li>span{color:var(--blue);font-size:11px}
.principles h3{margin:0 0 12px;font-size:21px;font-weight:600;line-height:1.5}
.principles p{margin:0;color:var(--muted);font-size:15px}
.trust-band{padding:20px 0;color:var(--ink);background:#e9ede6;border-block:1px solid var(--line)}
.trust-inner{display:flex;gap:36px;justify-content:space-between;align-items:center}
.trust-inner>div:first-child{display:flex;flex-direction:column}
.trust-inner span{color:var(--blue);font-size:10px;letter-spacing:.16em}
.trust-inner strong{font-size:14px;font-weight:550}
.trust-inner p{margin:0;color:var(--muted);font-size:14px}
.trust-mark{width:60px;height:60px;display:grid;place-items:center;border:1px solid var(--line);border-radius:50%;color:var(--blue);font-size:10px;line-height:1.4;text-align:center;letter-spacing:.1em}
.tours{position:relative;color:var(--ink);background:var(--sand)}
.tour-photo{position:relative;height:460px;margin:0;overflow:hidden;border-radius:28px;background:var(--abyss)}
.tour-photo img{height:100%;object-fit:cover}
.tour-photo figcaption{position:absolute;bottom:26px;left:28px;color:#fff;font-size:12px;letter-spacing:0;text-shadow:0 1px 8px #000}

.tours-content{display:grid;grid-template-columns:1.1fr 1fr;gap:24px 64px;align-items:start}
.tours-content>.section-head{grid-column:2;grid-row:1;margin-bottom:0}
.tour-photo{grid-column:1;grid-row:1/3}
.tour-grid{grid-column:2;display:grid;gap:24px;align-items:start}
.tour-grid>p{max-width:460px;margin:0;color:var(--muted);font-size:16px;line-height:1.9}
.tour-grid ul{margin:0;padding:0;list-style:none;display:grid;grid-template-columns:1fr 1fr;column-gap:28px;border-top:1px solid var(--line)}
.tour-grid li{padding:10px 0;border-bottom:1px solid var(--line);font-size:15px;font-weight:500;letter-spacing:.04em}
.tour-grid li span{margin-right:18px;color:var(--blue);font-size:10px}
.faq{background:#e9ede6}
.faq-list{border-top:1px solid var(--line)}
.faq-list details{border-bottom:1px solid var(--line)}
.faq-list summary{min-height:64px;padding:16px 0;display:grid;grid-template-columns:1fr 24px;gap:18px;align-items:center;cursor:pointer;list-style:none}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary>span{color:var(--blue);font-size:11px}
.faq-list summary strong{font-size:17px;font-weight:550;line-height:1.5}
.faq-list summary i{position:relative;width:24px;height:24px}
.faq-list summary i:before,.faq-list summary i:after{content:"";position:absolute;left:5px;top:12px;width:14px;height:1px;background:var(--blue)}
.faq-list summary i:after{transform:rotate(90deg);transition:transform .2s}
.faq-list details[open] summary i:after{transform:rotate(0)}
.faq-list details>p{margin:0;padding:0 42px 24px 0;color:var(--muted);font-size:15px;line-height:1.85}
.faq-list details[open] summary strong{color:var(--blue)}
.contact{color:var(--sand);background:var(--ink)}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:start}
.contact-title .section-index{margin-bottom:16px;color:var(--cyan)}
.contact-title h2 em{color:var(--cyan)}
.contact-title>p:last-child{max-width:350px;margin:26px 0 0;color:#b5c8cf;font-size:15px}
.contact-connect{min-width:0}
.contact-links{display:grid;gap:12px}
.contact-links a,.contact-links button{width:100%;min-height:70px;padding:18px;display:grid;grid-template-columns:110px 1fr auto;align-items:center;gap:12px;border:1px solid #ffffff33;border-radius:14px;color:#fff;background:transparent;text-align:left;cursor:pointer}
.contact-links a:hover,.contact-links button:hover{color:var(--cyan);background:#ffffff0a}
.contact-links span{color:#b5c8cf;font-size:10px;letter-spacing:.1em}
.contact-links strong{font-size:18px;font-weight:550;overflow-wrap:anywhere}
.contact-links i{font-size:12px;font-style:normal}
.contact-qr-label{margin:28px 0 14px;color:#b5c8cf;font-size:10px;letter-spacing:.06em}
.contact-qr-grid{display:grid;grid-template-columns:repeat(2,minmax(0,160px));gap:16px}
.contact-qr-card{overflow:hidden;display:block;border:1px solid #ffffff33;border-radius:16px;background:#ffffff06}
.contact-qr-card[href]:hover{border-color:var(--cyan)}
.contact-qr-card img{width:100%;aspect-ratio:1;border-radius:16px 16px 0 0;object-fit:contain;background:#fff}
.contact-qr-card>span{padding:14px;display:flex;flex-direction:column;gap:4px}
.contact-qr-card b{color:var(--cyan);font-size:10px;letter-spacing:.12em}
.contact-qr-card small{color:#b5c8cf;font-size:11px}
.site-footer{padding:32px 0 24px;color:var(--ink);background:var(--sand)}
.footer-main{padding-bottom:24px;border-bottom:1px solid var(--line)}
.footer-main>p{margin:24px 0 0;color:var(--ink);font-family:Arial,Helvetica,sans-serif;font-size:clamp(32px,4vw,54px);font-weight:400;line-height:1;letter-spacing:-.055em;white-space:nowrap}
.footer-bottom{padding-top:24px;display:flex;justify-content:space-between;gap:20px;color:var(--muted);font-size:11px}
.floating-contact{position:fixed;z-index:40;right:22px;bottom:22px;min-height:48px;padding:12px 19px;display:flex;align-items:center;gap:22px;border:1px solid #ffffff40;border-radius:12px;color:var(--sand);background:var(--ink);box-shadow:0 8px 28px #03192326;font-size:12px;font-weight:550}
.floating-contact b{font-size:18px}
.toast{position:fixed;z-index:100;left:50%;bottom:26px;padding:12px 18px;border-radius:4px;color:var(--abyss);background:var(--cyan);font-size:14px;visibility:hidden;transform:translate(-50%,140%);transition:transform .3s}
.toast.show{visibility:visible;transform:translate(-50%,0)}

.hero-visual{position:relative;margin:0;min-width:0;width:100%;justify-self:end}
.hero-visual img{width:100%;height:550px;object-fit:cover;object-position:center 75%;border-radius:28px}
.footer-signoff{display:flex;justify-content:space-between;align-items:center;font-size:14px}
.footer-signoff a,.footer-bottom>a{padding:10px 16px;border:1px solid var(--line);border-radius:12px}
.profile .section-head{max-width:720px}
.approach{padding-block:56px}
.approach-intro h2{font-size:34px}
.principles li{padding-block:24px}
.tours .section-head{margin-bottom:0}
.tour-grid li span{display:none}
.faq .shell{display:grid;grid-template-columns:.7fr 1.3fr;gap:64px;align-items:start}
.faq .section-head{position:sticky;top:32px;margin-bottom:0}
.faq-layout{min-width:0}
.course-grid{border-top:1px solid var(--line)}
.course-card{display:grid;grid-template-columns:48px 260px 1fr 130px;gap:3px 28px;padding:22px 0;border-bottom:1px solid var(--line);align-items:center}
.course-top{grid-column:1;grid-row:1/4;align-self:start;display:flex;flex-direction:column;gap:12px;font-family:Georgia,serif;font-size:24px;color:var(--blue);line-height:1.2}
.course-top span:last-child{font:10px/1.4 Pretendard,sans-serif;color:var(--muted)}
.course-tag{grid-column:2;grid-row:1;margin:0 0 5px;font-size:12px;color:var(--muted)}
.course-card h3{grid-column:2;grid-row:2;margin:0;font-size:22px;font-weight:550;line-height:1.45;letter-spacing:-.03em}
.course-ko{grid-column:2;grid-row:3;margin:6px 0 0;font-size:12px;color:var(--muted)}
.course-copy{grid-column:3;grid-row:1/4;margin:0;max-width:420px;font-size:14px;line-height:1.85;color:var(--muted)}
.course-link{grid-column:4;grid-row:1/4;justify-self:end;display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:10px 16px;border:1px solid var(--line);border-radius:12px;font-size:12px;white-space:nowrap;transition:background .2s}
.course-link:hover{background:#d6dfd3}
.course-footer{margin-top:28px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.course-footer p{max-width:420px;margin:0;color:var(--muted);font-size:14px}
.course-footer-actions{display:flex;gap:10px;flex-shrink:0}
.course-footer-actions a{display:flex;align-items:center;min-height:44px;padding:10px 16px;border:1px solid var(--line);border-radius:12px;font-size:12px}
.course-footer-actions a:first-child{background:var(--ink);color:var(--sand)}
.reveal{opacity:1;transform:none}

.hero-visual figcaption{margin-top:10px;color:var(--muted);font-size:12px}
.hero-note{display:flex;align-items:center;gap:14px;width:100%;margin:34px 0 0;padding-top:20px;border-top:1px solid var(--line);font-size:13px;font-weight:650;letter-spacing:.06em}
.hero-note span{color:var(--muted);font-size:12px;font-weight:400;letter-spacing:0}
.profile-story .section-head{margin-bottom:22px}
.profile-story .section-head h2{font-size:32px}
.nav-toggle{border-radius:10px}
@media(max-width:1100px){
 .shell{width:calc(100% - 64px)}
 .nav-wrap{gap:14px}.nav{gap:4px;font-size:12px}.nav>a{padding-inline:6px}.nav .nav-contact{padding-inline:8px}
 .hero-inner,.profile-grid,.approach-grid,.contact-grid,.tours-content,.faq .shell{column-gap:36px}
 .hero-copy h1{font-size:36px}.hero-lead br{display:none}
 .hero-visual img{height:530px}
 .hero-note{flex-wrap:wrap;gap:4px 12px}
 .course-card{grid-template-columns:32px 230px 1fr;gap:4px 20px}
 .course-link{grid-column:3;grid-row:4;justify-self:start;margin-top:10px}
 .profile-story .section-head h2{font-size:28px}
 .contact-links a,.contact-links button{grid-template-columns:90px 1fr auto;gap:8px}
}
@media(max-width:820px){
 .shell{width:calc(100% - 48px)}
 .nav-wrap{height:72px}
 .nav-toggle{display:flex;width:44px;height:44px;padding:11px;flex-direction:column;justify-content:center;gap:7px;border:1px solid var(--line);background:transparent}
 .nav-toggle i{display:block;width:100%;height:1px;background:var(--ink)}
 .nav-toggle span{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}
 .nav{position:absolute;inset:72px 0 auto;display:none;padding:16px 24px 24px;background:var(--sand);font-size:15px;border-bottom:1px solid var(--line)}
 .nav.open{display:grid;gap:8px}.nav>a{padding:12px}.nav .nav-contact{padding:12px}
 .hero-inner{gap:28px}.hero-copy h1{font-size:30px}.hero-visual img{height:490px}
 .hero-actions{gap:8px}.hero-actions .button{font-size:12px;padding:12px}
 .hero-note{margin-top:24px;font-size:12px}.hero-note span{font-size:11px}
 .section{padding:48px 0}
 .profile-grid{grid-template-columns:.85fr 1.15fr;gap:28px}.profile-photo{height:510px}
 .profile-story .section-head h2{font-size:25px}.profile-story>.lead{font-size:17px}
 .profile-facts{gap:0 14px}.profile-facts dd{font-size:12px}
 .approach-grid,.faq .shell,.contact-grid{grid-template-columns:1fr;gap:28px}
 .approach-intro>p:last-child,.contact-title>p:last-child{max-width:580px;margin-top:16px}
 .approach-intro .section-index,.contact-title .section-index{margin-bottom:12px}
 .faq .section-head{position:static}.section-head{margin-bottom:24px}
 .tours-content{gap:20px 28px}.tours .section-head h2{font-size:28px}.tour-photo{height:500px}
 .tour-grid{gap:20px}.tour-grid>p{font-size:15px}.tour-grid li{font-size:14px}
 .contact-connect{display:grid;grid-template-columns:1fr 260px;gap:12px 24px}
 .contact-links{align-self:start}.contact-links a,.contact-links button{grid-template-columns:1fr auto;padding:14px}
 .contact-links span{grid-column:1/-1}.contact-qr-label{grid-column:1;grid-row:2;margin:0;font-size:12px;letter-spacing:0}
 .contact-qr-grid{grid-column:2;grid-row:1/3;gap:12px}.contact-qr-card>span{padding:10px}
 .course-footer{align-items:flex-start;gap:16px;flex-direction:column}
 .footer-bottom{flex-wrap:wrap;padding-bottom:36px}
}
@media(max-width:560px){
 html{scroll-padding-top:20px}
 .shell{width:calc(100% - 40px)}
 .wordmark strong{font-size:12px}.wordmark small{font-size:8px}.brand-logo-crop{width:38px;height:38px}
 .hero{padding-top:30px}.hero-inner{grid-template-columns:1fr;gap:26px;padding-bottom:28px}
 .kicker{font-size:12px;margin-bottom:16px}.hero-copy h1{font-size:34px;line-height:1.3}
 .hero-lead{margin-top:18px;font-size:15px;line-height:1.75}
 .hero-actions{margin-top:22px;gap:10px}.hero-actions .button{min-height:48px;padding:12px 16px;font-size:13px}
 .hero-note{display:none}.hero-visual img{height:auto;aspect-ratio:4/5;object-position:center 55%;border-radius:22px}
 .hero-visual figcaption{font-size:11px;margin-top:8px}
 .section{padding:40px 0}.section-index{font-size:12px;margin-bottom:10px}
 .section-head h1,.section-head h2,.approach-intro h2,.contact h2{font-size:28px;line-height:1.4}
 .section-head>p:last-child{font-size:14px;margin-top:12px}
 .profile-grid{grid-template-columns:1fr;gap:24px}.profile-photo{height:340px;border-radius:20px}
 .profile-photo figcaption{inset:auto 16px 16px;font-size:11px}
 .profile-story .section-head h2{font-size:28px}.profile-story h3,.profile-story h2{font-size:23px}
 .profile-story>.lead{font-size:17px;margin-top:16px}.profile-story>p:not(.overline,.lead){font-size:14px}
 .profile-facts{margin-top:18px}.profile-facts dt{font-size:9px}.profile-facts dd{font-size:13px}
 .course-card{grid-template-columns:28px 1fr;gap:3px 14px;padding:22px 0}
 .course-top{grid-column:1;grid-row:1/5;font-size:20px}.course-tag,.course-card h3,.course-ko{grid-column:2}
 .course-card h3{font-size:21px}.course-copy{grid-column:2;grid-row:4;margin-top:10px;line-height:1.75}
 .course-link{grid-column:2;grid-row:5;justify-self:start;margin-top:12px}
 .course-footer{margin-top:22px}.course-footer-actions{flex-wrap:wrap}
 .principles li{grid-template-columns:24px 1fr;gap:12px;padding:20px 0}
 .principles h3{font-size:18px;margin-bottom:8px}.principles p{font-size:14px}
 .trust-band{padding:16px 0}.trust-inner{gap:8px;flex-wrap:wrap}.trust-inner strong{font-size:13px}.trust-inner p{font-size:12px}
 .tours-content{grid-template-columns:1fr;gap:22px}.tours-content>.section-head{grid-column:1;grid-row:1;margin:0}
 .tour-photo{grid-column:1;grid-row:2;height:320px;border-radius:20px}.tour-photo figcaption{left:16px;bottom:16px;font-size:11px}
 .tour-grid{grid-column:1;gap:18px}.tour-grid li{padding:9px 0}
 .faq-list summary{min-height:68px;padding:16px 0;gap:10px}.faq-list summary strong{font-size:15px}
 .faq-list details>p{padding:0 24px 20px 0;font-size:14px}
 .contact-grid{gap:24px}.contact-connect{display:block}
 .contact-links a,.contact-links button{grid-template-columns:80px 1fr auto;gap:6px;min-height:68px}
 .contact-links span{grid-column:auto;font-size:9px}.contact-links strong{font-size:15px}
 .contact-qr-label{margin:20px 0 12px;font-size:11px}
 .contact-qr-grid{grid-template-columns:repeat(2,minmax(0,145px));gap:12px}.contact-qr-card small{font-size:10px}
 .footer-signoff{font-size:12px;gap:12px}.footer-main>p{font-size:8vw}
 .footer-bottom{flex-direction:column;gap:12px;font-size:10px;align-items:flex-start}
 .floating-contact{right:14px;bottom:max(14px,env(safe-area-inset-bottom));min-height:44px;padding:10px 16px}
}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation:none!important;transition:none!important}}

/* 기존 공기통 이미지로 스크롤 위치를 표시한다. */
.air-monitor.tank-gauge{--air-level:1;position:fixed;z-index:42;right:10px;top:50%;width:90px;height:305px;padding:0;display:block;border:0;border-radius:0;color:#062c3c;background:transparent;box-shadow:none;backdrop-filter:none;transform:translateY(-50%);pointer-events:none;filter:drop-shadow(0 8px 14px rgba(0,0,0,.18))}
.air-monitor.tank-gauge:before{display:none}
.tank-gauge-shell{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;opacity:.72;filter:saturate(.7) brightness(1.16) contrast(.94);transform:scaleX(.84);transform-origin:center}
.tank-gauge-face{position:absolute;z-index:2;left:50%;top:33%;width:72px;height:calc(250px + 2cm);display:flex;flex-direction:column;align-items:center;transform:translateX(-50%) scale(.36);transform-origin:top center;font-family:Inter,Pretendard,"Noto Sans KR",sans-serif;text-align:center}
.tank-gauge-label{margin-bottom:8px;color:#16475a;font-size:.62rem;font-weight:900;letter-spacing:.16em}
.tank-gauge-window{position:relative;width:17px;height:calc(148px + 2cm);overflow:hidden;border:1px solid rgba(0,76,93,.42);border-radius:12px;background:rgba(3,36,46,.22);box-shadow:inset 0 2px 6px rgba(1,23,31,.48),0 0 0 3px rgba(255,255,255,.42)}
.tank-gauge-fill{position:absolute;inset:0;background:linear-gradient(180deg,#bfffee 0%,#55dfd4 38%,#0797ad 100%);box-shadow:0 0 12px rgba(52,224,214,.78);transform:scaleY(var(--air-level));transform-origin:bottom;transition:transform .12s linear}
.tank-gauge-window b{position:absolute;z-index:2;inset:7px 3px;background:repeating-linear-gradient(to bottom,rgba(255,255,255,.82) 0 1px,transparent 1px 20px);opacity:.82}
.tank-gauge-face strong{display:flex;align-items:baseline;justify-content:center;width:60px;margin-top:10px;color:#07394c;font-size:1.15rem;font-weight:950;line-height:1;font-variant-numeric:tabular-nums;letter-spacing:-.035em;white-space:nowrap}
.tank-gauge-face strong small{margin-left:2px;font-size:.55rem;font-weight:900;letter-spacing:.02em}.tank-gauge-face .air-value{display:inline-block;min-width:3ch;text-align:right}


.air-monitor.reserve .tank-gauge-fill{background:linear-gradient(180deg,#ffd18b,#ff9b38)}
@media(max-width:1300px){.air-monitor.tank-gauge{right:2px;top:auto;bottom:82px;width:64px;height:217px;transform:none}.tank-gauge-face{transform:translateX(-50%) scale(.26)}}
@media(prefers-reduced-motion:reduce){.tank-gauge-fill{transition:none}}

/* 메인 페이지의 헤더 래퍼도 고정해 스크롤 중 메뉴를 유지한다. */
#header.main_hd{position:sticky;top:0;z-index:50}
@media(min-width:821px) and (max-width:1000px){.nav-wrap{width:calc(100% - 32px);gap:10px}.wordmark{gap:8px}.wordmark strong{font-size:12px}.brand-logo-crop{width:34px;height:34px}.nav{font-size:11px;gap:3px}.nav>a{padding-inline:5px}}