/* ===== 고쳐주기 옥상방수 — 디자인 시스템 ===== */
:root {
    --bg: #F7F4EE;
    --bg-warm: #EFEAE0;
    --surface: #FFFFFF;
    --ink: #1E2624;
    --ink-soft: #55625E;
    --line: #DED8CB;
    --accent: #0B4F5C;
    --accent-strong: #083C46;
    --accent-soft: #E4EEEC;
    --cta: #C1592A;
    --cta-strong: #A6491F;
    --max: 1280px;
    --gap: clamp(20px, 3vw, 40px);
    --section-pad: clamp(64px, 9vw, 128px);
    --radius: 4px;
    --font: "Pretendard", -apple-system, BlinkMacSystemFont, "Malgun Gothic", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: var(--font);
    background: var(--bg);
    color: var(--ink);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; height: auto; }
a { color: inherit; text-decoration: none; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, p { margin: 0; }
table { border-collapse: collapse; width: 100%; }

.grj-skip-link {
    position: absolute; left: -999px; top: 0; background: var(--accent); color: #fff;
    padding: 12px 20px; z-index: 999;
}
.grj-skip-link:focus { left: 12px; top: 12px; }

/* ===== Header ===== */
.grj-header {
    position: sticky; top: 0; z-index: 100;
    background: rgba(247,244,238,0.92);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--line);
}
.grj-header__inner {
    max-width: var(--max); margin: 0 auto; padding: 16px 24px;
    display: flex; align-items: center; justify-content: space-between; gap: 24px;
}
.grj-logo { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 20px; color: var(--accent); flex-shrink: 0; }
.grj-logo__mark { display: inline-flex; color: var(--accent); }
.grj-nav__list { display: flex; align-items: center; gap: 32px; }
.grj-nav__list a { font-size: 15px; font-weight: 500; color: var(--ink); padding: 6px 0; border-bottom: 2px solid transparent; }
.grj-nav__list a:hover { border-bottom-color: var(--accent); }
.grj-nav__list .grj-nav__cta a,
.grj-nav__list li.grj-nav__cta a {
    background: var(--cta); color: #fff; padding: 10px 20px; border-radius: 999px; border: none;
}
.grj-nav__list li:last-child a { background: var(--cta); color: #fff; padding: 10px 20px; border-radius: 999px; }
.grj-nav__list li:last-child a:hover { background: var(--cta-strong); border-bottom-color: transparent; }

.grj-nav-toggle {
    display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 8px;
}
.grj-nav-toggle span { width: 24px; height: 2px; background: var(--ink); display: block; }
.grj-nav-toggle__label { display: none; }

/* ===== Buttons / CTA ===== */
.grj-cta-group { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 32px; }
.grj-btn {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 15px 28px; font-size: 16px; font-weight: 700;
    border-radius: 999px; border: 2px solid transparent; white-space: nowrap;
}
.grj-btn--call { background: var(--cta); color: #fff; }
.grj-btn--call:hover { background: var(--cta-strong); }
.grj-btn--sms { background: transparent; color: var(--accent); border-color: var(--accent); }
.grj-btn--sms:hover { background: var(--accent-soft); }
.grj-cta-group--lg .grj-btn { padding: 18px 34px; font-size: 18px; }
.grj-btn--block { display: flex; justify-content: center; width: 100%; margin-top: 20px; }

/* ===== Section shell ===== */
.grj-main { overflow-x: clip; }
.grj-main > section { padding: var(--section-pad) 24px; max-width: var(--max); margin: 0 auto; }
.grj-section-head { max-width: 720px; margin-bottom: 48px; }
.grj-section-head h2 { font-size: clamp(28px, 3vw, 40px); font-weight: 800; letter-spacing: -0.01em; }
.grj-section-head--light h2 { color: var(--ink); }
.grj-lead { color: var(--ink-soft); font-size: 17px; margin-top: 12px; }
.grj-eyebrow {
    font-size: 13px; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase;
    color: var(--accent); margin: 0 0 14px;
}
.grj-section-cta { margin-top: 40px; }
.grj-link-arrow { font-weight: 700; color: var(--accent); border-bottom: 2px solid var(--accent); padding-bottom: 2px; }
.grj-updated { text-align: center; color: var(--ink-soft); font-size: 13px; padding: 24px; max-width: var(--max); margin: 0 auto; }
.grj-note { font-size: 14px; color: var(--ink-soft); }

/* ===== Hero (split screen) ===== */
.grj-hero {
    display: grid; grid-template-columns: 1fr 1fr; align-items: stretch; gap: 0;
    max-width: 100%; padding: 0 !important; min-height: min(88vh, 820px);
}
.grj-hero__text {
    display: flex; flex-direction: column; justify-content: center;
    padding: clamp(40px, 6vw, 96px) clamp(24px, 6vw, 96px);
}
.grj-hero__title {
    font-size: clamp(44px, 6vw, 76px); font-weight: 900; letter-spacing: -0.02em; line-height: 1.05;
    color: var(--accent-strong); margin: 0 0 20px;
}
.grj-hero__sub { font-size: clamp(16px, 1.4vw, 19px); color: var(--ink-soft); max-width: 44ch; }
.grj-hero__media { position: relative; min-height: 360px; background: var(--bg-warm); }
.grj-hero__media img { width: 100%; height: 100%; object-fit: cover; object-position: center 30%; }

/* ===== Signs (editorial: image top, text+list below on wide too, but asymmetric split) ===== */
.grj-signs {
    display: grid; grid-template-columns: 0.9fr 1.1fr; gap: var(--gap); align-items: center;
    background: var(--surface);
    max-width: 100% !important;
}
.grj-signs > * { max-width: var(--max); }
.grj-signs { padding-left: 0 !important; padding-right: 0 !important; }
.grj-signs__media { padding-left: clamp(24px, 6vw, 80px); }
.grj-signs__media img { border-radius: var(--radius); aspect-ratio: 4/5; object-fit: cover; }
.grj-signs__text { padding: 0 clamp(24px, 6vw, 80px); }
.grj-signs__text h2 { font-size: clamp(26px, 3vw, 36px); font-weight: 800; margin-bottom: 16px; }
.grj-check-list { margin-top: 24px; display: flex; flex-direction: column; gap: 14px; }
.grj-check-list li {
    position: relative; padding-left: 28px; font-size: 16px; color: var(--ink);
}
.grj-check-list li::before {
    content: "✓"; position: absolute; left: 0; top: 0; color: var(--accent); font-weight: 800;
}

/* ===== Services grid ===== */
.grj-services__grid {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--gap);
}
.grj-service-card { background: var(--surface); border: 1px solid var(--line); display: flex; flex-direction: column; }
.grj-service-card--feature { grid-column: span 4; display: grid; grid-template-columns: 1.2fr 1fr; border: none; background: none; }
.grj-service-card--feature .grj-service-card__media { aspect-ratio: auto; }
.grj-service-card__media { aspect-ratio: 1/1; overflow: hidden; background: var(--bg-warm); }
.grj-service-card__media img { width: 100%; height: 100%; object-fit: cover; }
.grj-service-card__body { padding: 22px; }
.grj-service-card--feature .grj-service-card__body { padding: 32px 0 0 40px; display: flex; flex-direction: column; justify-content: center; }
.grj-service-card h3 { font-size: 19px; font-weight: 800; margin-bottom: 8px; }
.grj-service-card--feature h3 { font-size: 28px; }
.grj-service-card p { color: var(--ink-soft); font-size: 15px; }

/* ===== Process (horizontal steps) ===== */
.grj-process__list { display: grid; grid-template-columns: repeat(5, 1fr); gap: 22px; }
.grj-process__media { position: relative; aspect-ratio: 1/1; overflow: hidden; border-radius: var(--radius); margin-bottom: 16px; background: var(--bg-warm); }
.grj-process__media img { width: 100%; height: 100%; object-fit: cover; }
.grj-process__no {
    position: absolute; top: 10px; left: 10px; background: rgba(255,255,255,0.92); color: var(--accent-strong);
    font-weight: 800; font-size: 13px; padding: 4px 10px; border-radius: 999px;
}
.grj-process__item h3 { font-size: 16px; font-weight: 700; margin-bottom: 6px; }
.grj-process__item p { font-size: 14px; color: var(--ink-soft); }

/* ===== Cases (feature + archive list) ===== */
.grj-cases { background: var(--bg-warm); max-width: 100% !important; padding-left: 0 !important; padding-right: 0 !important; }
.grj-cases > * { max-width: var(--max); margin: 0 auto; padding-left: 24px; padding-right: 24px; }
.grj-cases__feature { display: grid; grid-template-columns: 1.3fr 1fr; gap: var(--gap); align-items: center; }
.grj-cases__feature-media { display: block; aspect-ratio: 4/3; overflow: hidden; border-radius: var(--radius); }
.grj-cases__feature-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.grj-cases__feature-media:hover img { transform: scale(1.03); }
.grj-cases__feature-text h3 { font-size: 26px; font-weight: 800; margin: 10px 0 14px; }
.grj-cases__feature-text p { color: var(--ink-soft); margin-bottom: 18px; }
.grj-empty { color: var(--ink-soft); }

.grj-cases-archive__list { display: flex; flex-direction: column; gap: 56px; }
.grj-case-row { display: grid; grid-template-columns: 1.3fr 1fr; gap: var(--gap); align-items: center; }
.grj-case-row__media { display: block; aspect-ratio: 4/3; overflow: hidden; border-radius: var(--radius); }
.grj-case-row__media img { width: 100%; height: 100%; object-fit: cover; }
.grj-case-row__text h2 { font-size: 24px; font-weight: 800; margin: 8px 0 12px; }
.grj-case-row__text p { color: var(--ink-soft); margin-bottom: 14px; }

/* ===== Why check (editorial, text forward) ===== */
.grj-why-check { display: grid; grid-template-columns: 1fr 0.9fr; gap: var(--gap); align-items: center; }
.grj-why-check__text h2 { font-size: clamp(26px, 3vw, 36px); font-weight: 800; margin-bottom: 20px; }
.grj-why-check__media img { aspect-ratio: 4/5; object-fit: cover; border-radius: var(--radius); }

/* ===== Detail block (reusable editorial split, subpages) ===== */
.grj-detail-block { display: grid; grid-template-columns: 1fr 1fr; gap: var(--gap); align-items: center; }
.grj-detail-block--reverse { grid-template-columns: 1fr 1fr; }
.grj-detail-block--reverse .grj-detail-block__media { order: 2; }
.grj-detail-block__media img { aspect-ratio: 4/5; object-fit: cover; border-radius: var(--radius); }
.grj-detail-block__text h2 { font-size: clamp(24px, 2.6vw, 32px); font-weight: 800; margin-bottom: 16px; }
.grj-detail-block__text p { color: var(--ink-soft); }

/* ===== Table ===== */
.grj-visually-hidden {
    position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden;
    clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}
.grj-table--summary { margin-top: 40px; }
.grj-table { margin-top: 24px; font-size: 14px; }
.grj-table th, .grj-table td { border: 1px solid var(--line); padding: 12px 14px; text-align: left; vertical-align: top; }
.grj-table th { background: var(--accent-soft); color: var(--accent-strong); font-weight: 700; }
.grj-table tbody tr:nth-child(even) { background: rgba(0,0,0,0.015); }

/* ===== FAQ accordion ===== */
.grj-accordion { display: flex; flex-direction: column; border-top: 1px solid var(--line); }
.grj-accordion__item { border-bottom: 1px solid var(--line); padding: 22px 0; }
.grj-accordion__item summary { cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.grj-accordion__item summary::-webkit-details-marker { display: none; }
.grj-accordion__item summary h3 { font-size: 17px; font-weight: 700; }
.grj-accordion__item summary::after { content: "+"; font-size: 22px; color: var(--accent); flex-shrink: 0; }
.grj-accordion__item[open] summary::after { content: "–"; }
.grj-accordion__item p { margin-top: 16px; color: var(--ink-soft); max-width: 68ch; }

/* ===== Final CTA ===== */
.grj-final-cta {
    background: var(--accent); color: #fff; text-align: center; border-radius: var(--radius);
    padding: clamp(48px, 6vw, 88px) 24px !important; max-width: var(--max);
}
.grj-final-cta h2 { font-size: clamp(24px, 3vw, 34px); font-weight: 800; line-height: 1.4; }
.grj-final-cta .grj-cta-group { justify-content: center; margin-top: 32px; }
.grj-final-cta .grj-btn--sms { color: #fff; border-color: #fff; }
.grj-final-cta .grj-btn--sms:hover { background: rgba(255,255,255,0.12); }
.grj-final-cta--compact { padding: clamp(40px, 5vw, 64px) 24px !important; }

/* ===== Footer ===== */
.grj-footer { background: var(--accent-strong); color: #EFEAE0; margin-top: 40px; }
.grj-footer__inner {
    max-width: var(--max); margin: 0 auto; padding: 56px 24px;
    display: grid; grid-template-columns: 1fr 1fr; gap: 40px;
}
.grj-footer__brand { display: flex; flex-direction: column; gap: 10px; }
.grj-logo__mark--footer { color: #EFEAE0; }
.grj-footer__biz-name { font-size: 20px; font-weight: 800; color: #fff; margin-top: 4px; }
.grj-footer__biz-info { display: flex; flex-direction: column; gap: 6px; font-size: 14px; color: #C9CFCB; }
.grj-footer__biz-info a { color: #C9CFCB; }
.grj-footer__nav { display: flex; align-items: flex-start; justify-content: flex-end; }
.grj-footer__list { display: flex; flex-direction: column; gap: 12px; text-align: right; }
.grj-footer__list a { font-size: 15px; color: #EFEAE0; }
.grj-footer__list a:hover { text-decoration: underline; }
.grj-footer__bottom { border-top: 1px solid rgba(255,255,255,0.12); text-align: center; padding: 18px; font-size: 13px; color: #9AA6A1; }

/* ===== Subpages ===== */
.grj-subpage { padding-top: 0; }
.grj-breadcrumb { max-width: var(--max); margin: 20px auto 0; padding: 0 24px; }
.grj-breadcrumb ol { display: flex; flex-wrap: wrap; gap: 8px; font-size: 13px; color: var(--ink-soft); }
.grj-breadcrumb li:not(:last-child)::after { content: "/"; margin-left: 8px; color: var(--line); }
.grj-breadcrumb a { color: var(--ink-soft); }
.grj-breadcrumb a:hover { color: var(--accent); }
.grj-page-hero { max-width: var(--max); margin: 0 auto; padding: 40px 24px 0; }
.grj-page-hero h1 { font-size: clamp(34px, 4.2vw, 52px); font-weight: 900; color: var(--accent-strong); letter-spacing: -0.02em; }
.grj-page-hero .grj-lead { max-width: 62ch; margin-top: 16px; font-size: 17px; }

/* ===== Contact page ===== */
.grj-contact { display: grid; grid-template-columns: 1fr 1fr; gap: var(--gap); }
.grj-contact__card { background: var(--surface); border: 1px solid var(--line); padding: 40px; text-align: center; }
.grj-contact__card h2 { font-size: 22px; font-weight: 800; margin-bottom: 10px; }
.grj-contact__card p { color: var(--ink-soft); margin-bottom: 8px; }
.grj-contact-info { background: var(--bg-warm); padding: 40px; text-align: center; }
.grj-contact-info h2 { font-size: 20px; font-weight: 800; margin-bottom: 16px; }
.grj-contact-info ul { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px 24px; color: var(--ink-soft); font-size: 14px; }

/* ===== Case study detail ===== */
.grj-case-hero-media { max-width: var(--max); margin: 32px auto 0; padding: 0 24px; }
.grj-case-hero-media img { width: 100%; aspect-ratio: 16/10; object-fit: cover; border-radius: var(--radius); }
.grj-case-summary { max-width: 800px !important; font-size: 17px; color: var(--ink-soft); }
.grj-case-summary p { margin-bottom: 1em; }
.grj-case-group h2 { font-size: 24px; font-weight: 800; margin-bottom: 8px; }
.grj-gallery { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin-top: 24px; }
.grj-gallery__item:first-child { grid-column: span 2; }
.grj-gallery__item img { width: 100%; aspect-ratio: 16/10; object-fit: cover; border-radius: var(--radius); }
.grj-gallery__item:first-child img { aspect-ratio: 16/9; }
.grj-gallery__item figcaption { font-size: 13px; color: var(--ink-soft); margin-top: 8px; }
.grj-case-result { background: var(--bg-warm); }
.grj-case-nav { max-width: var(--max); margin: 0 auto; padding: 0 24px; }

/* ===========================================================
   Responsive — Tablet
   =========================================================== */
@media (max-width: 1024px) {
    .grj-hero { grid-template-columns: 1fr; min-height: auto; }
    .grj-hero__media { order: -1; min-height: 360px; }
    .grj-signs { grid-template-columns: 1fr; }
    .grj-signs__media { padding: 0 24px; }
    .grj-signs__media img { aspect-ratio: 16/9; }
    .grj-signs__text { padding: 40px 24px 0; }
    .grj-services__grid { grid-template-columns: repeat(2, 1fr); }
    .grj-service-card--feature { grid-column: span 2; grid-template-columns: 1fr; }
    .grj-service-card--feature .grj-service-card__body { padding: 24px 0 0; }
    .grj-process__list { grid-template-columns: repeat(3, 1fr); row-gap: 32px; }
    .grj-cases__feature { grid-template-columns: 1fr; }
    .grj-case-row { grid-template-columns: 1fr; }
    .grj-why-check { grid-template-columns: 1fr; }
    .grj-why-check__media { order: -1; }
    .grj-detail-block, .grj-detail-block--reverse { grid-template-columns: 1fr; }
    .grj-detail-block--reverse .grj-detail-block__media { order: -1; }
    .grj-footer__inner { grid-template-columns: 1fr; }
    .grj-footer__nav { justify-content: flex-start; }
    .grj-footer__list { text-align: left; }
}

/* ===========================================================
   Responsive — Mobile
   =========================================================== */
@media (max-width: 640px) {
    .grj-header__inner { padding: 14px 20px; }
    .grj-nav-toggle { display: flex; }
    .grj-nav {
        position: fixed; inset: 0 0 0 auto; width: min(78vw, 320px); height: 100vh;
        background: var(--surface); transform: translateX(100%); transition: transform .25s ease;
        padding: 88px 28px 28px; box-shadow: -8px 0 24px rgba(0,0,0,0.08);
    }
    .grj-nav.is-open { transform: translateX(0); }
    .grj-nav__list { flex-direction: column; align-items: flex-start; gap: 22px; }
    .grj-nav__list li:last-child a { display: inline-block; }

    .grj-main > section, .grj-page-hero, .grj-breadcrumb, .grj-case-hero-media, .grj-case-nav { padding-left: 20px; padding-right: 20px; }
    .grj-services__grid { grid-template-columns: 1fr; }
    .grj-service-card--feature { grid-column: span 1; }
    .grj-process__list { grid-template-columns: repeat(2, 1fr); }
    .grj-contact { grid-template-columns: 1fr; }
    .grj-cta-group { flex-direction: column; }
    .grj-cta-group .grj-btn { width: 100%; justify-content: center; }
    .grj-gallery { grid-template-columns: 1fr; }
    .grj-gallery__item:first-child { grid-column: span 1; }
    .grj-hero__text { padding: 48px 20px; }
    .grj-signs__media { padding: 0 20px; }
    .grj-signs__text { padding: 32px 20px 0; }
}