/* Yonsei Saebom — Q2 Marketing Strategy Playbook
   Editorial / consulting-deck aesthetic (Stripe Press × McKinsey).
   Light cream paper base + restrained accent bands.  */

:root {
  --paper:        #f5f3ee;
  --paper-deep:   #e8e4d9;
  --ink:          #1a1a1a;
  --ink-soft:     #2a2a2a;
  --ink-muted:    #5c5c5c;
  --ink-dim:      #8a8a8a;
  --ink-faint:    rgba(26,26,26,0.18);
  --rule:         rgba(26,26,26,0.12);

  --acc-emerald:  #0f7a4f;
  --acc-rose:     #b8323a;
  --acc-amber:    #b8740f;
  --acc-cyan:     #0e6878;
  --acc-violet:   #5b4a8c;
  --acc-ink:      #1a1a1a;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--paper); color: var(--ink); }
body {
  font-family: 'Inter', 'Pretendard Variable', 'Noto Sans KR', -apple-system, BlinkMacSystemFont, sans-serif;
  font-feature-settings: 'cv11','ss01','ss03';
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-size: 16px;
  line-height: 1.55;
  overflow-x: hidden;
}

.font-display { font-family: 'EB Garamond','Noto Serif KR', Georgia, serif; }
.font-mono    { font-family: 'JetBrains Mono', ui-monospace, SFMono-Regular, monospace; }

/* ── Top brand bar ── */
.brand-bar {
  position: sticky; top: 0; z-index: 50;
  background: var(--paper);
  border-bottom: 1px solid var(--rule);
  padding: 14px 32px;
  display: flex; align-items: center; justify-content: space-between;
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-muted);
  backdrop-filter: blur(8px);
}
.brand-bar a { color: var(--ink-muted); text-decoration: none; }
.brand-bar a:hover { color: var(--ink); }
.brand-bar .right { display: flex; gap: 18px; }

/* ── Hero ── */
.hero {
  min-height: 92vh;
  display: flex; align-items: center;
  padding: 0 8vw;
  position: relative;
  border-bottom: 1px solid var(--rule);
}
.hero-grid { width: 100%; max-width: 1200px; margin: 0 auto; display: grid; grid-template-columns: minmax(0,1.4fr) minmax(0,1fr); gap: 80px; align-items: end; }
@media (max-width: 900px) { .hero-grid { grid-template-columns: 1fr; gap: 36px; } }

.kicker {
  font-size: 11px;
  letter-spacing: 0.38em;
  text-transform: uppercase;
  color: var(--ink-muted);
  font-weight: 500;
  margin: 0 0 24px;
}
.hero h1 {
  font-family: 'EB Garamond','Noto Serif KR', Georgia, serif;
  font-size: clamp(48px, 6.5vw, 96px);
  line-height: 1.02;
  letter-spacing: -0.025em;
  font-weight: 500;
  color: var(--ink);
  margin: 0;
  word-break: keep-all;
}
.hero h1 em { font-style: italic; color: var(--acc-emerald); }
.hero .lede {
  font-size: clamp(16px, 1.2vw, 19px);
  line-height: 1.65;
  color: var(--ink-muted);
  margin-top: 32px;
  max-width: 540px;
}
.hero .lede b { color: var(--ink); font-weight: 500; }

.hero-side {
  border-left: 1px solid var(--ink-faint);
  padding-left: 32px;
}
.hero-side dl { margin: 0; }
.hero-side dt { font-size: 10px; letter-spacing: 0.22em; text-transform: uppercase; color: var(--ink-dim); margin-top: 16px; }
.hero-side dd { margin: 4px 0 0; font-family: 'JetBrains Mono', monospace; font-size: 14px; color: var(--ink); }
.hero-side dd .em { color: var(--acc-emerald); }

/* ── Chapter section ── */
section.chapter {
  padding: 12vh 8vw;
  max-width: 1280px;
  margin: 0 auto;
  border-bottom: 1px solid var(--rule);
}
section.chapter:last-of-type { border-bottom: none; }
section.chapter.compact { padding: 9vh 8vw; }

.chapter-no {
  font-family: 'EB Garamond', serif;
  font-style: italic;
  font-size: 14px;
  color: var(--ink-dim);
  letter-spacing: 0.04em;
}
.chapter-title {
  font-family: 'EB Garamond','Noto Serif KR', serif;
  font-size: clamp(32px, 4.6vw, 58px);
  line-height: 1.08;
  letter-spacing: -0.022em;
  font-weight: 500;
  color: var(--ink);
  margin: 6px 0 18px;
  word-break: keep-all;
}
.chapter-title em { color: var(--acc-emerald); font-style: italic; }
.chapter-lede {
  font-size: 17px; line-height: 1.7; color: var(--ink-muted);
  max-width: 720px;
}
.chapter-lede b { color: var(--ink); font-weight: 500; }

/* ── Pull quote ── */
.pull {
  font-family: 'EB Garamond','Noto Serif KR', serif;
  font-style: italic;
  font-size: clamp(22px, 2.4vw, 32px);
  line-height: 1.4;
  color: var(--ink-soft);
  border-left: 3px solid var(--acc-emerald);
  padding: 6px 0 6px 28px;
  margin: 36px 0;
  max-width: 760px;
}

/* ── Tag chips ── */
.chip {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 10.5px; letter-spacing: 0.22em; text-transform: uppercase;
  padding: 4px 10px;
  border: 1px solid var(--ink-faint);
  border-radius: 999px;
  color: var(--ink-muted);
  background: var(--paper);
  white-space: nowrap;
}
.chip.emerald { color: var(--acc-emerald); border-color: rgba(15,122,79,0.4); }
.chip.rose    { color: var(--acc-rose);    border-color: rgba(184,50,58,0.4); }
.chip.amber   { color: var(--acc-amber);   border-color: rgba(184,116,15,0.4); }
.chip.cyan    { color: var(--acc-cyan);    border-color: rgba(14,104,120,0.4); }
.chip.violet  { color: var(--acc-violet);  border-color: rgba(91,74,140,0.4); }

/* ── Card ── */
.card {
  background: rgba(255,255,255,0.5);
  border: 1px solid var(--rule);
  border-radius: 6px;
  padding: 24px 28px;
}
.card-title {
  font-family: 'EB Garamond', serif;
  font-size: 22px; letter-spacing: -0.015em; margin: 0 0 6px; color: var(--ink);
}
.card-sub { font-size: 12px; color: var(--ink-dim); letter-spacing: 0.16em; text-transform: uppercase; }

/* ── Stat tile ── */
.stat {
  border-top: 1px solid var(--ink-faint);
  padding: 18px 0;
}
.stat .lab { font-size: 10.5px; letter-spacing: 0.24em; text-transform: uppercase; color: var(--ink-dim); }
.stat .num { font-family: 'EB Garamond', serif; font-size: clamp(32px, 3.5vw, 48px); line-height: 1; letter-spacing: -0.02em; color: var(--ink); margin-top: 8px; }
.stat .num.em { color: var(--acc-emerald); }
.stat .num.dn { color: var(--acc-rose); }
.stat .sub { font-size: 12px; color: var(--ink-dim); margin-top: 6px; }

/* ── Tables ── */
.tbl { width: 100%; border-collapse: collapse; font-size: 14px; }
.tbl th {
  text-align: left; font-weight: 500;
  font-size: 10.5px; letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--ink-dim); padding: 10px 12px;
  border-bottom: 1.5px solid var(--ink-faint);
}
.tbl td { padding: 12px; border-bottom: 1px solid var(--rule); vertical-align: top; }
.tbl td.num { font-family: 'JetBrains Mono', monospace; text-align: right; }
.tbl tr.priority-1 td { background: rgba(15,122,79,0.04); }
.tbl tr:hover td { background: rgba(0,0,0,0.02); }

/* ── Funnel ── */
.funnel-stage { display: grid; grid-template-columns: minmax(0,1fr) 90px 90px 120px; gap: 16px; align-items: center; padding: 14px 0; border-bottom: 1px solid var(--rule); }
.funnel-stage:last-child { border-bottom: none; }
.funnel-label { font-size: 15px; }
.funnel-label .stage { font-weight: 500; color: var(--ink); }
.funnel-label .meta { font-size: 12px; color: var(--ink-dim); margin-top: 4px; }
.funnel-num { font-family: 'JetBrains Mono', monospace; font-size: 14px; text-align: right; }
.funnel-num .lab { font-size: 10px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--ink-dim); display: block; margin-bottom: 4px; }
.funnel-target { color: var(--acc-emerald); font-weight: 500; }
@media (max-width: 700px) {
  .funnel-stage { grid-template-columns: 1fr; gap: 8px; }
  .funnel-num { text-align: left; }
}

/* ── Audience tier bars ── */
.tier-row { display: grid; grid-template-columns: 80px 1fr 70px; gap: 16px; align-items: center; padding: 12px 0; }
.tier-name { font-weight: 500; font-size: 13px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink); }
.tier-bar { height: 24px; background: var(--paper-deep); border-radius: 3px; overflow: hidden; position: relative; }
.tier-bar .fill { height: 100%; background: var(--acc-ink); transition: width 1.2s cubic-bezier(0.2, 0.9, 0.3, 1); width: 0; }
.tier-bar.cold .fill { background: var(--acc-cyan); }
.tier-bar.warm .fill { background: var(--acc-amber); }
.tier-bar.lal .fill { background: var(--acc-violet); }
.tier-bar.hot .fill { background: var(--acc-emerald); }
.tier-share { font-family: 'JetBrains Mono', monospace; text-align: right; font-size: 13px; color: var(--ink-muted); }

/* ── Dayparting heatmap ── */
.dp-grid { display: grid; grid-template-columns: 80px repeat(7, 1fr); gap: 2px; margin-top: 18px; }
.dp-h, .dp-d { font-size: 11px; color: var(--ink-dim); text-align: center; padding: 4px; }
.dp-cell { aspect-ratio: 1.6; border-radius: 2px; display: flex; align-items: center; justify-content: center; font-size: 10px; color: rgba(255,255,255,0.85); }
.dp-i1 { background: #e3ddc8; color: var(--ink-dim); }
.dp-i2 { background: #c9c192; color: var(--ink-muted); }
.dp-i3 { background: #a6a05c; color: #fff; }
.dp-i4 { background: #5a8568; color: #fff; }
.dp-i5 { background: var(--acc-emerald); color: #fff; }

/* ── Phase steps ── */
.phase-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
@media (max-width: 800px) { .phase-grid { grid-template-columns: 1fr; } }
.phase-card { border: 1px solid var(--rule); border-radius: 6px; padding: 22px 24px; background: rgba(255,255,255,0.6); position: relative; }
.phase-card .ph { font-family: 'EB Garamond', serif; font-style: italic; color: var(--ink-dim); font-size: 14px; }
.phase-card .daily { font-family: 'EB Garamond', serif; font-size: 44px; margin: 4px 0 0; letter-spacing: -0.02em; color: var(--ink); }
.phase-card .daily .unit { font-size: 16px; color: var(--ink-muted); margin-left: 4px; }
.phase-card .gate { margin-top: 14px; padding-top: 12px; border-top: 1px solid var(--rule); font-size: 12.5px; color: var(--ink-muted); }
.phase-card.p1 { border-left: 3px solid var(--acc-cyan); }
.phase-card.p2 { border-left: 3px solid var(--acc-amber); }
.phase-card.p3 { border-left: 3px solid var(--acc-emerald); }

/* ── OKR ── */
.okr-block { padding: 22px 0; border-bottom: 1px solid var(--rule); }
.okr-block:last-child { border-bottom: none; }
.okr-area { font-size: 10.5px; letter-spacing: 0.24em; text-transform: uppercase; color: var(--ink-dim); }
.okr-obj { font-family: 'EB Garamond', serif; font-size: 22px; color: var(--ink); margin: 4px 0 12px; letter-spacing: -0.015em; }
.okr-list { list-style: none; padding: 0; margin: 0; }
.okr-list li { font-size: 14px; padding: 6px 0 6px 22px; position: relative; color: var(--ink-soft); }
.okr-list li::before { content: '→'; position: absolute; left: 0; color: var(--acc-emerald); font-family: 'EB Garamond', serif; }

/* ── Roadmap timeline ── */
.tl-row { display: grid; grid-template-columns: 100px 1fr; gap: 24px; padding: 18px 0; border-bottom: 1px solid var(--rule); align-items: start; }
.tl-row:last-child { border-bottom: none; }
.tl-week { font-family: 'JetBrains Mono', monospace; font-size: 13px; color: var(--ink); }
.tl-week .block { display: block; font-size: 10px; letter-spacing: 0.22em; text-transform: uppercase; color: var(--acc-emerald); margin-top: 4px; }
.tl-items { list-style: none; padding: 0; margin: 0; }
.tl-items li { font-size: 14px; padding: 4px 0 4px 18px; position: relative; color: var(--ink-soft); }
.tl-items li::before { content: '•'; position: absolute; left: 4px; color: var(--ink-dim); }

/* ── Rules table emphasis ── */
.rule-row { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1.4fr) minmax(0,1.4fr); gap: 18px; align-items: start; padding: 16px 0; border-bottom: 1px solid var(--rule); }
.rule-name { font-weight: 500; font-size: 15px; color: var(--ink); }
.rule-threshold { font-family: 'JetBrains Mono', monospace; font-size: 13px; color: var(--ink-muted); }
.rule-action { font-size: 13.5px; color: var(--ink-soft); }
.rule-pri { display: inline-block; font-size: 9px; letter-spacing: 0.22em; text-transform: uppercase; padding: 2px 8px; border-radius: 999px; margin-top: 4px; }
.rule-pri.high { background: rgba(184,50,58,0.10); color: var(--acc-rose); }
.rule-pri.medium { background: rgba(184,116,15,0.10); color: var(--acc-amber); }

/* ── Risk row ── */
.risk-row { display: grid; grid-template-columns: minmax(0,2fr) 100px 100px minmax(0,3fr); gap: 18px; padding: 14px 0; border-bottom: 1px solid var(--rule); align-items: start; }
.risk-row .name { font-weight: 500; color: var(--ink); }
.risk-row .ban { font-family: 'JetBrains Mono', monospace; font-size: 11px; text-align: center; padding: 4px 8px; border-radius: 3px; }
.risk-row .ban.high { background: rgba(184,50,58,0.10); color: var(--acc-rose); }
.risk-row .ban.medium { background: rgba(184,116,15,0.10); color: var(--acc-amber); }
.risk-row .ban.low, .risk-row .ban.inherent { background: rgba(0,0,0,0.05); color: var(--ink-muted); }
.risk-row .mit { font-size: 13.5px; color: var(--ink-soft); }

/* ── Reveal ── */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity 0.7s cubic-bezier(0.16,1,0.3,1), transform 0.7s cubic-bezier(0.16,1,0.3,1); }
.reveal.in { opacity: 1; transform: translateY(0); }

/* ── Closing ── */
.closing { padding: 14vh 8vw; text-align: center; border-top: 1px solid var(--rule); background: var(--paper-deep); }
.closing .line { font-family: 'EB Garamond','Noto Serif KR', serif; font-style: italic; font-size: clamp(22px, 2.6vw, 34px); color: var(--ink-soft); max-width: 720px; margin: 0 auto; line-height: 1.4; }
.closing .meta { margin-top: 24px; font-size: 11px; letter-spacing: 0.22em; text-transform: uppercase; color: var(--ink-dim); }
.closing .meta a { color: var(--ink-muted); text-decoration: none; border-bottom: 1px solid var(--rule); }

/* ── Helpers ── */
.row-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.row-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
@media (max-width: 800px) {
  .row-2 { grid-template-columns: 1fr; }
  .row-4 { grid-template-columns: repeat(2, 1fr); gap: 12px; }
}

@media print {
  .brand-bar, .chip { background: white !important; }
  section.chapter, .hero { page-break-inside: avoid; }
  .reveal { opacity: 1 !important; transform: none !important; }
}