*{box-sizing:border-box}body{margin:0;background:#17191B;color:#F3EEE4;font-family:system-ui,-apple-system,'Noto Sans KR',sans-serif;line-height:1.75;word-break:keep-all;overflow-wrap:anywhere}.shell{width:min(100% - 40px,760px);margin:auto}header{border-bottom:1px solid #45423C}.header-inner{display:flex;align-items:center;justify-content:space-between;min-height:76px}.brand img{display:block}.phone,.actions button{border:1px solid #F3EEE4;border-radius:3px;padding:12px 22px;min-height:48px;font:inherit;font-weight:700;text-decoration:none;color:#F3EEE4;background:transparent}.phone,.actions .primary{background:#F3EEE4;color:#212426}.back{display:inline-block;margin:30px 0 16px;color:#CAC4BA}h1{font-size:clamp(1.8rem,5vw,2.6rem);line-height:1.3;letter-spacing:-.04em;margin:0 0 18px}h2{font-size:1.1rem}p{margin:12px 0}.intro{color:#CAC4BA}.source,.notice{font-size:.9rem;color:#CAC4BA}.notice:empty{display:none}fieldset{border:1px solid #45423C;border-radius:4px;padding:28px;background:#212426;margin:24px 0}label{display:block;font-weight:700;margin:20px 0 8px}label:first-of-type{margin-top:0}label span{font-size:.82rem;font-weight:400;color:#CAC4BA}input,select,textarea{display:block;width:100%;max-width:100%;min-width:0;min-height:48px;border:1px solid #70654F;border-radius:3px;background:#212426;color:#F3EEE4;font:inherit;font-size:1rem;padding:12px;resize:vertical}select{white-space:normal}textarea{word-break:normal}.privacy{font-size:.83rem;color:#CAC4BA;margin:22px 0}.actions{display:flex;flex-wrap:wrap;gap:12px}.actions button{cursor:pointer;flex:1;min-width:160px}.actions button:hover{background:#34332C;color:#F3EEE4}button:disabled{cursor:wait;opacity:.65}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid #E8D7B4;outline-offset:4px}aside{border-top:1px solid #45423C;margin-top:30px;padding-top:12px;color:#CAC4BA;font-size:.9rem}aside a{color:inherit}footer{padding-block:32px;font-size:.85rem;color:#CAC4BA}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}#form-status{color:#CAC4BA}#preview-box{margin-top:24px}@media(max-width:420px){.shell{width:calc(100% - 32px)}fieldset{padding:20px 16px}.actions{flex-direction:column}.actions button{width:100%;min-width:0}.phone{padding:10px 16px}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}

.phone,.actions .primary{background:#D5BC87;color:#17191B;border-color:#D5BC87}h1,h2{font-family:"Noto Serif KR",Georgia,serif}.shell{width:min(100% - 40px,820px)}.brand img{object-fit:contain}fieldset{padding:32px}@media(max-width:420px){fieldset{padding:20px 16px}.shell{width:calc(100% - 32px)}}

/* Preserve original transparent black logo pixels; brighten only its display. */
.brand img[src="/images/sio-logo.png"]{filter:brightness(0) invert(1)}