@charset "utf-8";

/* ─── Klubo 브랜드 변수 (sponsorship.css와 공유) ─── */
:root {
    --bg:         #ffffff;
    --bg-sub:     #f5f7fa;
    --bg-dark:    #0d0d1a;
    --text:       #0d0d1a;
    --text-mid:   #4b5563;
    --text-light: #9ca3af;
    --blue:       #3b82f6;
    --blue-dark:  #1d4ed8;
    --teal:       #35c5f0;
    --divider:    rgba(0,0,0,0.09);
    --field-border:       #d0d7e2;
    --field-border-hover: #9fb3cc;
    --sans: "Pretendard","Malgun Gothic","Apple SD Gothic Neo",-apple-system,BlinkMacSystemFont,sans-serif;
}

/* ─── reset ─── */
*,*::before,*::after{box-sizing:border-box}
*{margin:0;padding:0}
fieldset{border:none}
html{font-size:10px;scroll-behavior:smooth}
body{
    font-family:var(--sans);
    background:var(--bg);
    color:var(--text);
    word-break:keep-all;
    overflow-x:hidden;        /* 폴백: clip 미지원 구형 브라우저 */
    overflow-x:clip;          /* hidden은 스크롤 컨테이너를 만들어 sticky 탭바를 깨뜨리므로 clip 사용 */
    -webkit-font-smoothing:antialiased;
}
a{text-decoration:none;color:inherit}
img{max-width:100%;height:auto;display:block}
ul{list-style:none}

/* ═══════════════════════════════════
   래퍼 / 공통 레이아웃
═══════════════════════════════════ */
#ad-main{
    min-height:100vh;
    background:var(--bg);
}
.ad-wrap{max-width:1400px;margin:0 auto;padding:0 48px}

/* ═══════════════════════════════════
   공통 섹션 헤더
═══════════════════════════════════ */
.ad-section-head{margin-bottom:40px}
.ad-form-section .ad-section-head{
    max-width:720px;
    margin-left:auto;
    margin-right:auto;
}
.ad-label{
    font-size:1.1rem;font-weight:700;letter-spacing:0.2em;text-transform:uppercase;
    color:var(--blue);margin-bottom:12px;
}
.ad-section-title{
    font-size:clamp(3.2rem,4vw,5.6rem);
    font-weight:900;letter-spacing:-0.03em;
    color:var(--text);line-height:1.1;
}
.ad-section-title em{color:var(--teal);font-style:normal}

/* ═══════════════════════════════════
   스크롤 등장 애니메이션
═══════════════════════════════════ */
.ad-reveal{
    opacity:0;
    transform:translateY(28px);
    transition:opacity .7s ease,transform .7s ease;
}
.ad-reveal.is-visible{opacity:1;transform:translateY(0)}

/* ═══════════════════════════════════
   HERO
═══════════════════════════════════ */
.ad-hero{
    padding-top:80px;
    min-height:85vh;
    background:linear-gradient(160deg, #eef4ff 0%, #f5f8ff 50%, #ffffff 100%);
    display:flex;
    align-items:center;
    position:relative;
    overflow:hidden;
}
.ad-hero::before{
    content:'';
    position:absolute;
    inset:0;
    background:radial-gradient(ellipse 70% 60% at 65% 35%, rgba(59,130,246,.10) 0%, transparent 70%),
               radial-gradient(ellipse 50% 50% at 15% 85%, rgba(53,197,240,.07) 0%, transparent 60%);
    pointer-events:none;
}
.ad-hero__inner{
    position:relative;
    z-index:1;
    padding:100px 0;
    width:100%;
}
.ad-hero__copy{
    max-width:760px;
    margin:0 auto;
    text-align:center;
    display:flex;
    flex-direction:column;
    align-items:center;
}
.ad-hero__kicker{
    font-size:1.3rem;font-weight:700;letter-spacing:0.2em;text-transform:uppercase;
    color:var(--blue);
    margin-bottom:28px;
    display:flex;align-items:center;gap:10px;
}
.ad-hero__kicker::before,
.ad-hero__kicker::after{
    content:'';
    display:inline-block;
    width:32px;height:2px;
    background:var(--blue);
    flex-shrink:0;
}
.ad-hero__title{
    font-size:clamp(3.4rem,5vw,5.6rem);
    font-weight:900;
    line-height:1.1;
    letter-spacing:-0.03em;
    color:var(--text);
    margin-bottom:32px;
}
.ad-hero__title em{
    color:var(--blue);
    font-style:normal;
    display:block;
}
.ad-hero__sub{
    font-size:1.9rem;
    color:var(--text-mid);
    margin-bottom:36px;
    line-height:1.6;
    max-width:620px;
}
/* 정성 신뢰 칩 (수치 노출 없음) */
.ad-hero__chips{
    display:flex;flex-wrap:wrap;justify-content:center;gap:10px;
    margin-bottom:44px;
}
.ad-hero__chip{
    display:inline-flex;align-items:center;gap:8px;
    font-size:1.4rem;font-weight:600;color:var(--blue-dark);
    background:rgba(255,255,255,.72);
    border:1px solid rgba(59,130,246,.18);
    border-radius:999px;
    padding:9px 18px;
    box-shadow:0 4px 14px rgba(29,78,216,.06);
}
.ad-hero__chip svg{
    width:17px;height:17px;color:var(--teal);flex-shrink:0;
}
.ad-hero__cta{
    display:inline-flex;align-items:center;gap:14px;
    font-size:1.7rem;font-weight:700;color:#fff;
    background:linear-gradient(135deg,var(--blue) 0%,var(--blue-dark) 100%);
    padding:18px 36px;border-radius:8px;
    box-shadow:0 8px 32px rgba(59,130,246,.25);
    transition:opacity .15s,gap .2s;
    min-height:56px;
}
.ad-hero__cta:hover{opacity:.88;gap:22px}
.ad-hero__actions{
    display:flex;flex-direction:column;align-items:center;gap:18px;
}
.ad-hero__note{
    display:flex;align-items:center;gap:8px;
    font-size:1.35rem;font-weight:600;color:var(--text-mid);
    line-height:1.4;
}
.ad-hero__note svg{
    width:18px;height:18px;color:var(--blue);flex-shrink:0;
}

/* ═══════════════════════════════════
   WHY KLUBO  차별점 카드
═══════════════════════════════════ */
.ad-why{
    padding:80px 0;
    background:var(--bg-sub);
    border-bottom:1px solid var(--divider);
}
.ad-why .ad-section-head{
    margin-bottom:56px;
}
.ad-why__grid{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:24px;
}
.ad-why-card{
    background:var(--bg);
    border:1px solid var(--divider);
    border-radius:10px;
    padding:40px 36px;
    transition:border-color .2s, box-shadow .2s;
}
.ad-why-card:hover{
    border-color:rgba(59,130,246,.35);
    box-shadow:0 4px 24px rgba(59,130,246,.08);
}
.ad-why-card__icon{
    display:flex;
    align-items:center;
    justify-content:center;
    width:52px;
    height:52px;
    background:rgba(59,130,246,.08);
    border-radius:12px;
    color:var(--blue);
    margin-bottom:24px;
}
.ad-why-card__title{
    font-size:2rem;
    font-weight:800;
    color:var(--text);
    letter-spacing:-0.03em;
    line-height:1.3;
    margin-bottom:14px;
}
.ad-why-card__desc{
    font-size:1.4rem;
    color:var(--text-mid);
    line-height:1.7;
}
.ad-why__lead{
    font-size:1.6rem;
    color:var(--text-mid);
    line-height:1.65;
    margin-top:18px;
    max-width:640px;
}

/* ═══════════════════════════════════
   FAQ
═══════════════════════════════════ */
.ad-faq{
    padding:80px 0;
    background:var(--bg);
    border-bottom:1px solid var(--divider);
}
.ad-faq .ad-section-head{margin-bottom:40px}
.ad-faq__lead{
    font-size:1.6rem;
    color:var(--text-mid);
    line-height:1.65;
    margin-top:18px;
    max-width:640px;
}
.ad-faq__list{
    display:flex;
    flex-direction:column;
    gap:14px;
    max-width:840px;
}
.ad-faq__item{
    border:1.5px solid var(--divider);
    border-radius:12px;
    background:var(--bg);
    overflow:hidden;
    transition:border-color .2s, box-shadow .2s;
}
.ad-faq__item.is-open{
    border-color:rgba(59,130,246,.4);
    box-shadow:0 6px 24px rgba(59,130,246,.08);
}
.ad-faq__q-head{margin:0}
.ad-faq__q{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
    width:100%;
    font-family:var(--sans);
    text-align:left;
    background:transparent;
    border:none;
    cursor:pointer;
    padding:24px 28px;
    min-height:44px;
    color:var(--text);
}
.ad-faq__q:hover .ad-faq__q-text{color:var(--blue-dark)}
.ad-faq__q-text{
    font-size:1.7rem;
    font-weight:700;
    letter-spacing:-0.02em;
    line-height:1.4;
    transition:color .18s;
}
.ad-faq__icon{
    position:relative;
    width:22px;
    height:22px;
    flex-shrink:0;
}
.ad-faq__icon::before,
.ad-faq__icon::after{
    content:'';
    position:absolute;
    top:50%;
    left:50%;
    width:14px;
    height:2px;
    background:var(--blue);
    border-radius:2px;
    transform:translate(-50%,-50%);
    transition:transform .22s ease, opacity .22s ease;
}
.ad-faq__icon::after{transform:translate(-50%,-50%) rotate(90deg)}
.ad-faq__item.is-open .ad-faq__icon::after{
    transform:translate(-50%,-50%) rotate(0);
    opacity:0;
}
.ad-faq__a{
    display:none;
    padding:0 28px 24px;
}
.ad-faq__item.is-open .ad-faq__a{display:block}
.ad-faq__a p{
    font-size:1.5rem;
    color:var(--text-mid);
    line-height:1.75;
    border-top:1px solid var(--divider);
    padding-top:18px;
}
.ad-faq__cta-line{
    font-size:1.6rem;
    color:var(--text-mid);
    font-weight:600;
    margin-top:32px;
}
.ad-faq__cta-link{
    color:var(--blue);
    font-weight:700;
    margin-left:6px;
    white-space:nowrap;
}
.ad-faq__cta-link:hover{color:var(--blue-dark)}

/* ═══════════════════════════════════
   배너 광고 상품 (독립 섹션)
═══════════════════════════════════ */
.ad-banner{
    padding:80px 0;
    background:var(--bg-sub);
    border-top:8px solid #fff;
    border-bottom:1px solid var(--divider);
}
.ad-banner__head{margin-bottom:48px}
.ad-banner__lead{
    font-size:1.6rem;
    color:var(--text-mid);
    line-height:1.65;
    margin-top:18px;
    max-width:680px;
}
.ad-banner__block{margin-top:56px}
.ad-banner__block-title{
    font-size:2.4rem;
    font-weight:800;
    letter-spacing:-0.03em;
    color:var(--text);
    margin-bottom:8px;
}
.ad-banner__block-sub{
    font-size:1.5rem;
    color:var(--text-mid);
    line-height:1.6;
    margin-bottom:28px;
    max-width:680px;
}
.ad-banner__block-sub strong{color:var(--blue-dark);font-weight:800}
.ad-banner__note{
    font-size:1.3rem;
    color:var(--text-light);
    line-height:1.6;
    margin-top:18px;
}

/* WHY 3카드 */
.ad-banner__why{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:20px;
}
.ad-banner__why-card{
    background:var(--bg);
    border:1px solid var(--divider);
    border-radius:12px;
    padding:32px 28px;
    transition:border-color .2s, box-shadow .2s;
}
.ad-banner__why-card:hover{
    border-color:rgba(59,130,246,.35);
    box-shadow:0 4px 24px rgba(59,130,246,.08);
}
.ad-banner__why-icon{
    display:flex;align-items:center;justify-content:center;
    width:48px;height:48px;border-radius:12px;
    background:rgba(59,130,246,.08);
    color:var(--blue);
    margin-bottom:20px;
}
.ad-banner__why-icon svg{width:24px;height:24px}
.ad-banner__why-title{
    font-size:1.8rem;font-weight:800;letter-spacing:-0.02em;
    color:var(--text);line-height:1.3;margin-bottom:12px;
}
.ad-banner__why-desc{
    font-size:1.4rem;color:var(--text-mid);line-height:1.7;
}

/* 얼리 혜택 배너 */
.ad-banner__early{
    display:flex;align-items:center;flex-wrap:wrap;gap:12px;
    background:linear-gradient(135deg,rgba(59,130,246,.08),rgba(53,197,240,.08));
    border:1.5px solid rgba(59,130,246,.2);
    border-radius:10px;
    padding:20px 24px;
    margin-top:24px;
    font-size:1.5rem;font-weight:600;color:var(--blue-dark);line-height:1.6;
}
.ad-banner__early-badge{
    display:inline-flex;align-items:center;
    font-size:1.3rem;font-weight:800;
    color:#fff;background:linear-gradient(135deg,var(--blue),var(--blue-dark));
    padding:6px 14px;border-radius:999px;
    white-space:nowrap;
}

/* INVENTORY 지면 2곳 */
.ad-banner__inventory{
    display:grid;grid-template-columns:1fr 1fr;gap:20px;
}
.ad-banner__inv-card{
    display:flex;align-items:center;gap:24px;
    background:var(--bg);
    border:1px solid var(--divider);
    border-radius:12px;
    padding:28px;
}
.ad-banner__inv-info{flex:1 1 auto;min-width:0}
.ad-banner__inv-tag{
    display:inline-block;
    font-size:1.2rem;font-weight:800;letter-spacing:0.08em;
    color:var(--blue);margin-bottom:8px;
}
.ad-banner__inv-name{
    font-size:1.9rem;font-weight:800;letter-spacing:-0.02em;
    color:var(--text);margin-bottom:8px;
}
.ad-banner__inv-desc{
    font-size:1.4rem;color:var(--text-mid);line-height:1.6;margin-bottom:14px;
}
.ad-banner__inv-spec{
    font-size:1.35rem;color:var(--text-mid);font-weight:600;
    display:flex;align-items:center;gap:8px;flex-wrap:wrap;
}
.ad-banner__inv-spec strong{color:var(--text);font-weight:800}
.ad-banner__inv-ratio{
    display:inline-flex;align-items:center;
    font-size:1.15rem;font-weight:800;
    color:var(--blue-dark);background:rgba(59,130,246,.1);
    padding:3px 9px;border-radius:6px;
}
.ad-banner__inv-visual{flex-shrink:0;display:flex;align-items:center;justify-content:center}
.ad-banner__ratio-box{
    display:flex;align-items:center;justify-content:center;
    width:140px;
    background:linear-gradient(135deg,#dbeafe,#eff6ff);
    border:1.5px dashed rgba(59,130,246,.45);
    border-radius:8px;
}
.ad-banner__ratio-box--3x1{aspect-ratio:3 / 1}
.ad-banner__ratio-box--4x1{aspect-ratio:4 / 1}
.ad-banner__ratio-label{
    font-size:1.4rem;font-weight:800;color:var(--blue);letter-spacing:0.04em;
}

/* TARGETING 3그룹 */
.ad-banner__target{
    display:grid;grid-template-columns:repeat(3,1fr);gap:20px;
}
.ad-banner__target-card{
    background:var(--bg);
    border:1px solid var(--divider);
    border-radius:12px;
    padding:28px 24px;
}
.ad-banner__target-icon{
    display:flex;align-items:center;justify-content:center;
    width:44px;height:44px;border-radius:10px;
    background:rgba(53,197,240,.12);
    color:var(--teal);
    margin-bottom:16px;
}
.ad-banner__target-icon svg{width:22px;height:22px}
.ad-banner__target-name{
    font-size:1.7rem;font-weight:800;letter-spacing:-0.02em;
    color:var(--text);margin-bottom:8px;
}
.ad-banner__target-cats{
    font-size:1.4rem;color:var(--text-mid);line-height:1.55;margin-bottom:14px;
}
.ad-banner__target-brand{
    font-size:1.35rem;color:var(--text);line-height:1.55;
    padding-top:14px;border-top:1px solid var(--divider);
}
.ad-banner__target-brand span{
    display:block;font-size:1.15rem;font-weight:800;
    color:var(--blue);letter-spacing:0.06em;margin-bottom:4px;
}


/* PROCESS 4단계 */
.ad-banner__process{
    display:grid;grid-template-columns:repeat(4,1fr);gap:16px;
    list-style:none;
}
.ad-banner__step{
    position:relative;
    background:var(--bg);
    border:1px solid var(--divider);
    border-radius:12px;
    padding:28px 24px;
}
.ad-banner__step-num{
    display:flex;align-items:center;justify-content:center;
    width:40px;height:40px;border-radius:50%;
    font-size:1.8rem;font-weight:800;color:#fff;
    background:linear-gradient(135deg,var(--blue),var(--blue-dark));
    margin-bottom:16px;
}
.ad-banner__step-title{
    display:block;
    font-size:1.7rem;font-weight:800;letter-spacing:-0.02em;
    color:var(--text);margin-bottom:6px;
}
.ad-banner__step-by{
    display:inline-block;
    font-size:1.15rem;font-weight:800;letter-spacing:0.04em;
    color:var(--blue);background:rgba(59,130,246,.08);
    padding:3px 10px;border-radius:6px;margin-bottom:12px;
}
.ad-banner__step-desc{
    font-size:1.35rem;color:var(--text-mid);line-height:1.6;
}

/* REPORT 성과 리포트 */
.ad-banner__report-head{margin-bottom:28px}
.ad-banner__report-grid{
    display:grid;grid-template-columns:repeat(3,1fr);gap:20px;
}
.ad-banner__report-card{
    background:var(--bg);
    border:1px solid var(--divider);
    border-radius:12px;
    padding:28px 24px;
}
.ad-banner__report-title{
    font-size:1.6rem;font-weight:800;letter-spacing:-0.02em;
    color:var(--text);margin-bottom:16px;
    padding-bottom:12px;border-bottom:2px solid rgba(59,130,246,.18);
}
.ad-banner__report-items{
    display:flex;flex-direction:column;gap:10px;
}
.ad-banner__report-items li{
    position:relative;
    padding-left:20px;
    font-size:1.4rem;color:var(--text-mid);line-height:1.55;
}
.ad-banner__report-items li::before{
    content:'';
    position:absolute;left:0;top:8px;
    width:7px;height:7px;border-radius:50%;
    background:var(--teal);
}

/* CTA */
.ad-banner__cta-wrap{
    display:flex;flex-direction:column;align-items:center;text-align:center;
    gap:24px;
    margin-top:64px;
    padding:48px 32px;
    background:linear-gradient(135deg,#eef4ff,#f5f8ff);
    border:1px solid rgba(59,130,246,.18);
    border-radius:16px;
}
.ad-banner__cta-copy{
    font-size:clamp(2rem,3vw,2.8rem);
    font-weight:800;letter-spacing:-0.03em;line-height:1.4;
    color:var(--text);
}
.ad-banner__cta-copy em{color:var(--blue);font-style:normal}
.ad-banner__cta{
    display:inline-flex;align-items:center;gap:12px;
    font-size:1.7rem;font-weight:700;color:#fff;
    background:linear-gradient(135deg,var(--blue),var(--blue-dark));
    padding:18px 40px;border-radius:8px;
    box-shadow:0 8px 32px rgba(59,130,246,.25);
    transition:opacity .15s,gap .2s;
    min-height:56px;
}
.ad-banner__cta:hover{opacity:.88;gap:18px}

/* ═══════════════════════════════════
   소개서 안내 박스
═══════════════════════════════════ */
.ad-media-kit-note{
    display:flex;
    align-items:flex-start;
    gap:14px;
    background:rgba(59,130,246,.06);
    border:1.5px solid rgba(59,130,246,.2);
    border-radius:8px;
    padding:20px 24px;
    font-size:1.5rem;
    color:var(--blue-dark);
    font-weight:600;
    line-height:1.65;
    margin:0 auto 48px;
    max-width:720px;
}
.ad-media-kit-note svg{
    color:var(--blue);
    margin-top:2px;
    flex-shrink:0;
}
.ad-media-kit-note__text{
    flex:1 1 auto;
    min-width:0;
    word-break:keep-all;
    overflow-wrap:anywhere;
}
.ad-media-kit-note__link{
    color:var(--blue-dark);
    font-weight:700;
    text-decoration:underline;
    text-underline-offset:2px;
    white-space:nowrap;
}
.ad-media-kit-note__link:hover{opacity:.8}

/* ═══════════════════════════════════
   상단 3탭 세그먼트 컨트롤
═══════════════════════════════════ */
.ad-tabs-section{
    padding:24px 0;
    background:var(--bg-sub);
    border-bottom:1px solid var(--divider);
    position:sticky;
    top:80px;            /* 고정 헤더(.site-header 80px) 아래에 고정 */
    z-index:20;
}
.ad-tabs{
    display:flex;
    gap:6px;
    background:rgba(13,13,26,.04);
    border:1px solid var(--divider);
    border-radius:14px;
    padding:6px;
    max-width:760px;
    margin:0 auto;
}
.ad-tab{
    flex:1 1 0;
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:10px;
    font-family:var(--sans);
    font-size:1.6rem;
    font-weight:700;
    letter-spacing:-0.02em;
    color:var(--text-mid);
    background:transparent;
    border:none;
    border-radius:10px;
    padding:14px 16px;
    min-height:52px;
    cursor:pointer;
    transition:color .18s, background .18s, box-shadow .18s;
}
.ad-tab__icon{
    width:20px;height:20px;flex-shrink:0;
    transition:color .18s;
}
.ad-tab:hover{color:var(--text)}
.ad-tab.is-active{
    color:var(--blue-dark);
    background:var(--bg);
    box-shadow:0 4px 14px rgba(13,13,26,.08);
}
.ad-tab.is-active .ad-tab__icon{color:var(--blue)}
.ad-tab:focus-visible{
    outline:2px solid var(--blue);
    outline-offset:2px;
}

/* ═══════════════════════════════════
   탭 패널 / 폼 영역
═══════════════════════════════════ */
.ad-panel[hidden],
.ad-form-block[hidden]{
    display:none;
}
.ad-panel{
    animation:panelFadeIn .35s ease;
}
.ad-form-block{
    animation:panelFadeIn .3s ease;
}
@keyframes panelFadeIn{
    from{opacity:0;transform:translateY(12px)}
    to{opacity:1;transform:translateY(0)}
}

/* 제휴 안내 리드 */
.ad-partner-intro{
    padding:72px 0 0;
}
.ad-partner-intro__lead{
    font-size:1.6rem;
    color:var(--text-mid);
    line-height:1.7;
    margin-top:18px;
    max-width:680px;
}

/* ═══════════════════════════════════
   CONTACT FORM  문의 폼
═══════════════════════════════════ */
.ad-form-section{
    padding:96px 0 120px;
    background:var(--bg);
    border-bottom:1px solid var(--divider);
}
.ad-form{
    max-width:720px;
    margin:0 auto;
    display:flex;
    flex-direction:column;
    gap:28px;
}
.ad-form__group{
    display:flex;
    flex-direction:column;
    gap:8px;
}
.ad-form__group--error .ad-form__input,
.ad-form__group--error .ad-form__textarea{
    border-color:#ef4444;
    background:rgba(239,68,68,.03);
    box-shadow:none;
}
.ad-form__group--error .ad-form__radio-item{
    border-color:rgba(239,68,68,.3);
}
.ad-form__group--error .ad-form__privacy-box{
    border-color:rgba(239,68,68,.4);
}
.ad-form__error{
    display:block;
    font-size:1.25rem;
    font-weight:600;
    color:#ef4444;
    margin-top:2px;
}
.ad-form__label{
    font-size:1.4rem;
    font-weight:700;
    color:var(--text);
    letter-spacing:-0.01em;
}
.ad-form__required{
    color:var(--blue);
    margin-left:3px;
    font-weight:800;
}
.ad-form__input,
.ad-form__textarea{
    font-family:var(--sans);
    font-size:1.6rem;
    color:var(--text);
    background:var(--bg);
    border:1.5px solid var(--field-border);
    border-radius:6px;
    padding:14px 18px;
    transition:border-color .18s,background .18s,box-shadow .18s;
    outline:none;
    width:100%;
    -webkit-appearance:none;
    appearance:none;
}
.ad-form__input::placeholder,
.ad-form__textarea::placeholder{
    color:var(--text-light);
}
.ad-form__input:hover,
.ad-form__textarea:hover{
    border-color:var(--field-border-hover);
}
.ad-form__input:focus,
.ad-form__textarea:focus{
    border-color:var(--blue);
    background:var(--bg);
    box-shadow:0 0 0 3px rgba(59,130,246,.12);
}
.ad-form__textarea{
    min-height:160px;
    resize:vertical;
    line-height:1.6;
}
.ad-form__char-count{
    font-size:1.2rem;
    color:var(--text-light);
    text-align:right;
    margin-top:4px;
}
.ad-form__radio-group{
    display:flex;
    flex-wrap:wrap;
    gap:10px;
}
.ad-form__radio-item{
    display:inline-flex;
    align-items:center;
    gap:8px;
    cursor:pointer;
    font-size:1.4rem;
    color:var(--text);
    font-weight:500;
    padding:10px 18px;
    border:1.5px solid var(--field-border);
    border-radius:6px;
    background:var(--bg);
    transition:border-color .18s,background .18s,color .18s;
    min-height:44px;
    -webkit-user-select:none;
    user-select:none;
}
.ad-form__radio-item input[type="radio"]{
    accent-color:var(--blue);
    width:16px;
    height:16px;
    flex-shrink:0;
}
.ad-form__radio-item:hover{
    border-color:var(--field-border-hover);
}
.ad-form__radio-item:has(input:checked){
    border-color:var(--blue);
    background:rgba(59,130,246,.06);
    color:var(--blue-dark);
    font-weight:700;
}
.ad-form__privacy-box{
    background:var(--bg-sub);
    border:1.5px solid var(--divider);
    border-radius:6px;
    padding:16px 18px;
    transition:border-color .18s;
}
.ad-form__privacy-box:has(input:checked){
    border-color:var(--blue);
    background:rgba(59,130,246,.04);
}
.ad-form__privacy-row{
    display:flex;
    align-items:flex-start;
    gap:10px;
    cursor:pointer;
}
.ad-form__privacy-row input[type="checkbox"]{
    accent-color:var(--blue);
    width:16px;
    height:16px;
    flex-shrink:0;
    margin-top:2px;
}
.ad-form__privacy-text{
    font-size:1.3rem;
    color:var(--text-mid);
    line-height:1.7;
}
.ad-form__submit-btn{
    display:flex;
    align-items:center;
    justify-content:center;
    gap:12px;
    font-family:var(--sans);
    font-size:1.7rem;
    font-weight:700;
    color:#fff;
    background:linear-gradient(135deg,var(--blue) 0%,var(--blue-dark) 100%);
    border:none;
    border-radius:8px;
    padding:18px 32px;
    cursor:pointer;
    min-height:56px;
    width:100%;
    letter-spacing:-0.01em;
    box-shadow:0 6px 24px rgba(59,130,246,.3);
    transition:opacity .15s,box-shadow .15s;
}
.ad-form__submit-btn:hover{
    opacity:.88;
    box-shadow:0 8px 32px rgba(59,130,246,.4);
}
.ad-form__submit-btn:active{opacity:.78}
.ad-form__submit-btn:disabled{
    opacity:.5;
    cursor:not-allowed;
    box-shadow:none;
}

/* ═══════════════════════════════════
   반응형 — 태블릿 (1024px)
═══════════════════════════════════ */
@media(max-width:1024px){
    .ad-wrap{padding-left:32px;padding-right:32px}
    .ad-hero__inner{padding:80px 0}
}

/* ═══════════════════════════════════
   반응형 — 모바일 (768px)
═══════════════════════════════════ */
@media(max-width:768px){
    .ad-wrap{padding-left:20px;padding-right:20px}

    .ad-tabs-section{padding:18px 0;top:60px}      /* 모바일 헤더 60px 아래 */
    .ad-tabs{gap:4px;padding:5px}
    .ad-tab{font-size:1.4rem;gap:7px;padding:12px 8px;min-height:48px}
    .ad-tab__icon{width:18px;height:18px}

    .ad-partner-intro{padding-top:56px}
    .ad-partner-intro__lead{font-size:1.5rem}

    .ad-form-section{padding:72px 0 96px}
    .ad-section-head{margin-bottom:32px}

    .ad-hero{min-height:auto}
    .ad-hero__inner{padding:64px 0}
    .ad-hero__kicker{font-size:1.1rem;margin-bottom:20px}
    .ad-hero__kicker::before,
    .ad-hero__kicker::after{width:24px}
    .ad-hero__title{font-size:clamp(2.8rem,7vw,4rem);letter-spacing:-0.03em}
    .ad-hero__sub{font-size:1.6rem;margin-bottom:28px}
    .ad-hero__chips{gap:8px;margin-bottom:36px}
    .ad-hero__chip{font-size:1.3rem;padding:8px 14px}
    .ad-hero__cta{font-size:1.5rem;padding:16px 28px;min-height:52px}
    .ad-hero__note{font-size:1.25rem}

    .ad-section-title{font-size:clamp(2.8rem,6vw,3.6rem)}

    .ad-why{padding:56px 0}
    .ad-why__grid{grid-template-columns:1fr;gap:16px}
    .ad-why-card{padding:28px 24px}
    .ad-why-card__title{font-size:1.8rem}
    .ad-why__lead{font-size:1.5rem}

    .ad-faq{padding:56px 0}
    .ad-faq__lead{font-size:1.5rem}
    .ad-faq__q{padding:20px 22px}
    .ad-faq__q-text{font-size:1.55rem}
    .ad-faq__a{padding:0 22px 20px}
    .ad-faq__a p{font-size:1.45rem}
    .ad-faq__cta-line{font-size:1.5rem}

    .ad-banner{padding:56px 0}
    .ad-banner__head{margin-bottom:36px}
    .ad-banner__lead{font-size:1.5rem}
    .ad-banner__block{margin-top:44px}
    .ad-banner__block-title{font-size:2.1rem}
    .ad-banner__why{grid-template-columns:1fr;gap:14px}
    .ad-banner__why-card{padding:26px 22px}
    .ad-banner__inventory{grid-template-columns:1fr;gap:14px}
    .ad-banner__inv-card{flex-direction:column;align-items:flex-start;gap:18px;padding:24px}
    .ad-banner__inv-visual{width:100%}
    .ad-banner__ratio-box{width:100%;max-width:280px}
    .ad-banner__target{grid-template-columns:1fr;gap:14px}
    .ad-banner__process{grid-template-columns:1fr 1fr;gap:12px}
    .ad-banner__step{padding:24px 20px}
    .ad-banner__report-grid{grid-template-columns:1fr;gap:14px}
    .ad-banner__cta-wrap{margin-top:48px;padding:36px 24px;gap:20px}
    .ad-banner__cta{font-size:1.5rem;padding:16px 32px;min-height:52px}

    .ad-media-kit-note{font-size:1.4rem;padding:18px 20px;gap:12px;margin-bottom:36px}

    .ad-form{gap:20px}
    .ad-form__radio-group{gap:8px}
    .ad-form__radio-item{font-size:1.3rem;padding:10px 14px}
    .ad-form__submit-btn{font-size:1.6rem;min-height:52px}
}

@media(max-width:480px){
    .ad-wrap{padding-left:16px;padding-right:16px}

    .ad-tab{font-size:1.3rem;gap:0;padding:11px 6px;flex-direction:column}
    .ad-tab__icon{width:17px;height:17px;margin-bottom:3px}

    .ad-hero__inner{padding:52px 0}
    .ad-hero__title{font-size:clamp(2.8rem,8vw,3.6rem)}
    .ad-hero__sub{font-size:1.5rem;margin-bottom:24px}
    .ad-hero__chips{margin-bottom:32px}
    .ad-hero__chip{font-size:1.25rem;padding:7px 13px}
    .ad-hero__cta{font-size:1.4rem;padding:14px 24px}
    .ad-hero__note{font-size:1.2rem;justify-content:center}

    .ad-section-title{font-size:clamp(2.4rem,6.5vw,3.2rem)}

    .ad-why{padding:48px 0}

    .ad-banner{padding:48px 0}
    .ad-banner__block-title{font-size:2rem}
    .ad-banner__early{padding:16px 18px;font-size:1.4rem}
    .ad-banner__process{grid-template-columns:1fr}
    .ad-banner__cta-copy{font-size:1.9rem}
    .ad-banner__cta{font-size:1.45rem;padding:14px 28px}

    .ad-faq{padding:48px 0}
    .ad-faq__q{padding:18px 18px;gap:12px}
    .ad-faq__q-text{font-size:1.5rem}
    .ad-faq__a{padding:0 18px 18px}
    .ad-faq__cta-line{font-size:1.45rem}

    .ad-form{gap:16px}
    .ad-form-section{padding:56px 0 72px}
}