/* ── Detail pages shared styles (W1 polish) ── */
@import url('theme-default.css');

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}

html{scroll-behavior:smooth}
body{
  background:#ece9e2;
  font-family:var(--font-sans);
  color:var(--ink);
  font-weight:400;line-height:var(--lh-normal);
  letter-spacing:-0.005em;
  -webkit-font-smoothing:antialiased;
}
.serif{font-family:var(--font-serif);letter-spacing:-0.01em}

.app{
  max-width:480px;margin:0 auto;background:var(--cream);
  min-height:100vh;
  box-shadow:0 0 30px rgba(0,0,0,0.08);
}

/* ── 스크롤 진행 바 ── */
.scroll-bar{
  position:fixed;top:0;left:0;right:0;height:2px;
  background:transparent;z-index:40;
}
.scroll-bar .fill{
  height:100%;width:0;background:var(--ink-blue);
  transition:width 0.05s linear;
}

/* ── Top nav (Subpages) ── */
.topnav{
  position:sticky;top:0;z-index:30;
  max-width:480px;margin:0 auto;
  background:var(--nav-bg);
  backdrop-filter:blur(var(--nav-blur));
  -webkit-backdrop-filter:blur(var(--nav-blur));
  border-bottom:1px solid var(--border);
  padding:10px 22px;
  display:flex;justify-content:space-between;align-items:center;
}
.brand{
  display:flex;align-items:center;gap:6px;
  font-family:var(--font-serif);
  font-size:14px;font-weight:700;
  letter-spacing:-0.02em;color:var(--ink);
  text-decoration:none;
}
.brand .seal{
  width:26px;height:26px;
  display:inline-flex;align-items:center;justify-content:center;
  flex-shrink:0;
}
.brand .seal svg{width:100%;height:100%;display:block;}
.brand small{
  font-family:var(--font-ui);font-size:10px;
  font-weight:500;text-transform:uppercase;
  letter-spacing:0.12em;color:var(--muted);
}
.nav-cta{
  font-family:var(--font-sans);font-size:11.5px;font-weight:600;
  text-decoration:none;border-radius:99px;
  color:var(--ink);padding:5px 11px;border:1px solid var(--ink);
}

/* ── 공통 eyebrow ── */
.ey{
  font-family:var(--font-sans);
  font-size:11px;font-weight:600;
  letter-spacing:0.14em;text-transform:uppercase;
  color:var(--ink-blue);
  margin-bottom:14px;
  display:flex;align-items:center;gap:10px;
}
.ey::before{
  content:'';width:22px;height:1px;background:var(--ink-blue);flex-shrink:0;
}
.ey.green{color:var(--green)}
.ey.green::before{background:var(--green)}
.ey.light{color:rgba(255,255,255,0.55)}
.ey.light::before{background:rgba(255,255,255,0.3)}

/* ── 공통 헤딩 ── */
.sec-h2{
  font-family:var(--font-serif);
  font-size:24px;font-weight:700;
  line-height:var(--lh-tight);letter-spacing:-0.02em;
  margin-bottom:12px;
}
.sec-body{
  font-size:14.5px;color:var(--muted);
  font-weight:400;line-height:var(--lh-loose);
}
.sec-body b{color:var(--ink);font-weight:500}

/* ── 상세 헤더 ── */
.detail-header{
  padding:44px 22px 32px;
  border-bottom:1px solid var(--border);
  background:var(--cream);
}
.detail-header .back{
  font-family:var(--font-sans);
  font-size:12px;font-weight:500;color:var(--ink-blue);
  text-decoration:none;
  display:inline-flex;align-items:center;gap:5px;
  margin-bottom:20px;padding:5px 11px 5px 8px;
  border:1px solid var(--border);border-radius:99px;
  background:var(--paper);
  transition:border-color 0.2s;
}
.detail-header .back:hover{border-color:var(--ink-blue)}

.detail-header .proof-badge{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-sans);
  font-size:10.5px;font-weight:600;letter-spacing:0.1em;
  text-transform:uppercase;color:var(--ink-blue);
  padding:5px 10px;background:rgba(15,76,129,0.07);
  border:1px solid rgba(15,76,129,0.15);border-radius:4px;
  margin-bottom:14px;
}
.detail-header .proof-badge::before{
  content:'';width:6px;height:6px;border-radius:50%;
  background:var(--ink-blue);
}

.detail-header .case-mark-lg {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 12px;
}
.detail-header .case-mark-lg .mark {
  background: var(--ink-blue);
  color: #fff;
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 700;
  width: 20px;
  height: 20px;
  border-radius: 4px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
}
.detail-header .case-mark-lg .kind {
  font-family: var(--font-serif);
  font-size: 14px;
  font-weight: 700;
  color: var(--muted);
  line-height: 1.4;
  text-transform: uppercase;
}
.detail-header h1{
  font-family:var(--font-serif);
  font-size:28px;font-weight:700;
  line-height:var(--lh-tight);letter-spacing:-0.03em;
  color:var(--ink);
}
.detail-header .subtitle{
  font-size:14px;color:var(--muted);
  font-weight:400;margin-top:12px;line-height:var(--lh-loose);
}
.detail-header .subtitle b{color:var(--ink);font-weight:500}

/* ── 섹션 공통 ── */
.s-problem, .s-structure, .s-how, .s-roi, .s-ruler, .s-shift, .s-arch, .s-proof{
  padding:48px 22px;
}
.s-shift, .s-ruler, .s-arch, .s-screen{
  background:var(--dark);color:#fff;
}
.s-shift .sec-h2, .s-ruler .sec-h2, .s-arch .sec-h2, .s-screen .sec-h2{color:#fff}
.s-shift .sec-body, .s-ruler .sec-body, .s-arch .sec-body, .s-screen .sec-body{
  color:rgba(255,255,255,0.7);margin-bottom:26px;
}
.s-structure, .s-how{background:var(--paper)}
.s-screen{padding:48px 22px}

/* ── Problem · point-list ── */
.point-list{margin-top:22px}
.point-item{
  display:flex;gap:14px;align-items:flex-start;
  margin-bottom:22px;
}
.point-item:last-child{margin-bottom:0}
.point-num{
  font-family:var(--font-serif);
  font-size:24px;font-weight:700;color:var(--ink-blue);
  line-height:1;letter-spacing:-0.02em;
  flex-shrink:0;min-width:28px;
}
.point-title{
  font-size:14px;font-weight:600;color:var(--ink);
  margin-bottom:5px;line-height:1.5;
}
.point-desc{
  font-size:13px;color:var(--muted);
  font-weight:400;line-height:1.75;
}

/* ── Screen frame ── */
.screen-frame{
  background:#f0f0f0;border-radius:10px;overflow:hidden;
  border:1px solid rgba(255,255,255,0.18);
  box-shadow:0 20px 50px rgba(0,0,0,0.5),0 5px 15px rgba(0,0,0,0.3);
}
.screen-bar{
  background:#e0e0e0;padding:8px 12px;
  border-bottom:1px solid #d0d0d0;
  display:flex;align-items:center;gap:6px;
}
.screen-dot{width:8px;height:8px;border-radius:50%}
.screen-dot.r{background:#e74c3c}
.screen-dot.y{background:#f39c12}
.screen-dot.g{background:#2ecc71}
.screen-bar-label{
  font-family:var(--font-sans);
  font-size:10px;color:#777;font-weight:600;
  letter-spacing:0.1em;margin-left:8px;
}
.screen-frame img{width:100%;height:auto;display:block}
.screen-caption{
  font-size:12px;color:rgba(255,255,255,0.5);
  text-align:center;margin-top:14px;
}

/* ── ROI 카드 ── */
.s-roi{padding:52px 22px 48px;background:var(--cream)}
.roi-intro{
  font-size:14.5px;color:var(--muted);
  line-height:var(--lh-loose);margin-bottom:22px;
}
.roi-intro b{color:var(--ink);font-weight:500}
.roi-card{
  border:1px solid var(--border);border-radius:10px;
  overflow:hidden;margin-bottom:10px;
  background:var(--surface);
}
.roi-card:last-child{margin-bottom:0}
.roi-head{
  background:var(--paper);padding:14px 18px;
  border-bottom:1px solid var(--border);
  display:flex;justify-content:space-between;align-items:center;
}
.roi-head h3{
  font-family:var(--font-sans);
  font-size:13.5px;font-weight:600;color:var(--ink);
}
.roi-head .pct{
  font-family:var(--font-serif);
  font-size:26px;font-weight:700;
  letter-spacing:-0.03em;line-height:1;
}
.roi-head .pct.green{color:var(--green)}
.roi-head .pct.blue{color:var(--ink-blue)}
.roi-head .pct.ink{color:var(--ink)}

.roi-body{padding:16px 18px;background:var(--surface)}
.roi-row{
  display:flex;gap:10px;margin-bottom:10px;
  font-size:12.5px;line-height:1.6;
}
.roi-row:last-child{margin-bottom:0}
.roi-tag{
  font-family:var(--font-sans);
  font-size:10px;font-weight:700;padding:3px 9px;
  border-radius:4px;flex-shrink:0;
  height:fit-content;margin-top:1px;letter-spacing:0.04em;
}
.roi-tag.before{background:#eee;color:#888}
.roi-tag.after-green{background:rgba(45,106,79,0.1);color:var(--green)}
.roi-tag.after-blue{background:rgba(15,76,129,0.1);color:var(--ink-blue)}
.roi-tag.after-ink{background:var(--ink);color:#fff}
.roi-text{color:var(--muted);font-weight:400}
.roi-text.strong{color:var(--ink);font-weight:500}

/* ── Transfer 이식 힌트 블록 ── */
.transfer-hint{
  margin-top:28px;padding:20px 22px;
  background:var(--paper);border:1px solid var(--border);
  border-left:3px solid var(--ink-blue);border-radius:6px;
}
.transfer-hint .tt{
  font-family:var(--font-sans);
  font-size:10.5px;font-weight:600;letter-spacing:0.12em;
  text-transform:uppercase;color:var(--ink-blue);
  margin-bottom:8px;
}
.transfer-hint p{
  font-size:13.5px;color:var(--ink);line-height:1.7;
  font-weight:400;
}
.transfer-hint p b{font-weight:600}

/* ── CTA ── */
.s-cta{
  padding:52px 22px 60px;
  background:var(--dark);text-align:center;
}
.s-cta .ey{justify-content:center}
.s-cta .sec-h2{
  color:#fff;font-size:24px;margin-bottom:12px;
}
.s-cta .sec-h2 em{font-style:normal;color:var(--green-l)}
.s-cta .sec-body{
  color:rgba(255,255,255,0.7);margin-bottom:26px;
}

.cta-btn-primary{
  display:flex;align-items:center;justify-content:center;gap:8px;
  width:100%;background:#fff;color:var(--ink);
  font-family:var(--font-sans);
  font-size:14px;font-weight:600;
  padding:15px;border-radius:99px;
  text-decoration:none;text-align:center;margin-bottom:10px;
  box-shadow:0 2px 8px rgba(0,0,0,0.1);
  letter-spacing:-0.01em;
}
.cta-btn-primary .arr{font-weight:400;transition:transform 0.2s}
.cta-btn-primary:hover .arr{transform:translateX(3px)}

.cta-btn-secondary{
  display:inline-block;
  background:transparent;
  border:1px solid rgba(255,255,255,0.2);
  color:rgba(255,255,255,0.6);
  font-family:var(--font-sans);
  font-size:12.5px;font-weight:500;
  padding:10px 20px;border-radius:99px;
  text-decoration:none;text-align:center;
  letter-spacing:-0.01em;
  transition:all 0.2s;
}
.cta-btn-secondary:hover{
  border-color:rgba(255,255,255,0.4);
  color:rgba(255,255,255,0.9);
}
.cta-note{
  font-size:11.5px;color:rgba(255,255,255,0.45);
  margin-top:16px;line-height:1.7;letter-spacing:0.02em;
}
.cta-note a{color:rgba(255,255,255,0.8);text-decoration:underline}

/* ── 다음 케이스 네비 ── */
.case-nav{
  padding:28px 22px 36px;
  background:var(--cream);
  border-top:1px solid var(--border);
  display:grid;grid-template-columns:1fr 1fr;gap:10px;
}
.case-nav a{
  display:block;padding:16px 18px;
  background:var(--paper);border:1px solid var(--border);
  border-radius:8px;text-decoration:none;color:var(--ink);
  transition:border-color 0.2s;
}
.case-nav a:hover{border-color:var(--ink-blue)}
.case-nav a.disabled{opacity:0.35;pointer-events:none}
.case-nav .dir{
  font-family:var(--font-sans);
  font-size:10.5px;font-weight:600;letter-spacing:0.12em;
  text-transform:uppercase;color:var(--muted-2);margin-bottom:6px;
}
.case-nav .title{
  font-family:var(--font-serif);
  font-size:15px;font-weight:700;letter-spacing:-0.02em;
  line-height:1.4;
}
.case-nav a.next{text-align:right}

/* ── 푸터 ── */
.detail-footer{
  padding:24px 22px 40px;
  font-family:var(--font-sans);
  font-size:11.5px;color:var(--muted-2);
  line-height:1.7;letter-spacing:0.02em;
  text-align:center;
  background:var(--cream);
}
.detail-footer b{color:var(--muted);font-weight:500}

/* ── 모듈 흐름 섹션 (다크) ── */
.s-flow {
  padding: 52px 22px 48px;
  background: var(--dark);
  color: #fff;
}

.s-flow .sec-h2 {
  color: #fff;
}

.s-flow .flow-lede {
  font-size: 14.5px;
  color: rgba(255, 255, 255, 0.65);
  line-height: var(--lh-loose);
  margin-bottom: 28px;
}

.module-flow {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.module-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 18px 20px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.04);
}

.module-item.done {
  border-color: rgba(163, 196, 168, 0.35);
  background: rgba(45, 106, 79, 0.08);
}

.module-status {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  margin-top: 1px;
}

.module-item.done .module-status {
  background: rgba(45, 106, 79, 0.25);
  color: var(--green-l);
}

.module-item.next .module-status {
  background: rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.45);
}

.module-label {
  font-family: var(--font-sans);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 6px;
}

.module-item.done .module-label {
  color: var(--green-l);
}

.module-item.next .module-label {
  color: rgba(255, 255, 255, 0.4);
}

.module-title {
  font-family: var(--font-serif);
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 4px;
  letter-spacing: -0.01em;
  line-height: 1.4;
}

.module-desc {
  font-size: 12.5px;
  color: rgba(255, 255, 255, 0.55);
  line-height: 1.6;
}

.flow-footnote {
  margin-top: 22px;
  padding: 14px 18px;
  border: 1px dashed rgba(255, 255, 255, 0.15);
  border-radius: 8px;
  font-size: 12.5px;
  color: rgba(255, 255, 255, 0.5);
  line-height: 1.65;
  text-align: center;
}

.module-item.current {
  border-color: rgba(15, 76, 129, 0.35);
  background: rgba(15, 76, 129, 0.08);
}
.module-item.current .module-label {
  color: #6fa3d0;
}
.module-item.current .module-status {
  background: rgba(15, 76, 129, 0.2);
  color: #6fa3d0;
}

/* ── Screen Pin Overlay ── */
.screen-frame {
  position: relative; /* Ensure container is relative for absolute pins */
}
.screen-pin {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 6px;
  pointer-events: none;
  z-index: 10;
}
.screen-pin .num {
  width: 18px;
  height: 18px;
  background: var(--ink-blue);
  color: #fff;
  font-family: var(--font-sans);
  font-size: 10px;
  font-weight: 700;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 0 4px rgba(15, 76, 129, 0.2), 0 2px 4px rgba(0,0,0,0.2);
}
.screen-pin:nth-child(even) .num {
  background: var(--green);
  box-shadow: 0 0 0 4px rgba(45, 106, 79, 0.2), 0 2px 4px rgba(0,0,0,0.2);
}
.screen-pin .lab {
  background: rgba(255, 255, 255, 0.92);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 10.5px;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 4px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.12);
  white-space: nowrap;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  border: 1px solid rgba(0,0,0,0.06);
}

/* ── ROI Card Hero Style ── */
.roi-card.hero {
  background: linear-gradient(135deg, rgba(15, 76, 129, 0.04), rgba(45, 106, 79, 0.04));
  border: 1.5px solid var(--border-2);
  padding: 24px 20px;
  text-align: center;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.02);
}
.roi-card.hero .hero-pct {
  display: block;
  font-family: var(--font-serif);
  font-size: 44px;
  font-weight: 700;
  color: var(--ink-blue);
  letter-spacing: -0.02em;
  line-height: 1;
  margin-bottom: 8px;
}
.roi-card.hero .hero-pct.green {
  color: var(--green);
}
.roi-card.hero .hero-label {
  font-family: var(--font-sans);
  font-size: 13.5px;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: 0.04em;
  margin-bottom: 6px;
}
.roi-card.hero .hero-sub {
  font-size: 12.5px;
  color: var(--muted);
  line-height: 1.6;
}
.roi-card.hero .hero-sub b {
  color: var(--ink);
  font-weight: 600;
}