/* K.I.E Advisory · stylesheet
   Tone: dark, considered, premium consultant. Tight typography.
   No frameworks. No JS. ~7KB of CSS does the whole site.
*/

:root {
  --bg: #0b0f17;
  --bg-elev: #111722;
  --bg-alt: #0e1320;
  --line: #1d2433;
  --line-strong: #2a3346;
  --ink: #e6ebf2;
  --ink-dim: #9aa4b7;
  --ink-faint: #6e7790;
  --accent: #4ec9b0;
  --accent-warm: #f0b154;
  --accent-blue: #6aa9ff;
  --danger: #ff7a7a;
  --radius: 14px;
  --radius-sm: 8px;
  --max: 1180px;
  --pad: clamp(20px, 4vw, 40px);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--ink);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3 {
  font-family: 'Fraunces', Georgia, serif;
  font-weight: 600;
  letter-spacing: -0.015em;
  line-height: 1.15;
  color: var(--ink);
  margin: 0 0 0.6em;
}

h1 { font-size: clamp(36px, 5.2vw, 60px); font-weight: 700; letter-spacing: -0.025em; }
h2 { font-size: clamp(28px, 3.6vw, 40px); }
h3 { font-size: clamp(20px, 2vw, 24px); }

p { margin: 0 0 1em; color: var(--ink); }
p.lede { font-size: clamp(18px, 1.6vw, 21px); color: var(--ink-dim); line-height: 1.55; max-width: 56ch; }
.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  margin: 0 0 14px;
}
.section-lede { color: var(--ink-dim); max-width: 62ch; font-size: 17px; }

a { color: var(--ink); text-decoration: underline; text-decoration-color: var(--line-strong); text-underline-offset: 4px; transition: color .15s, text-decoration-color .15s; }
a:hover { color: var(--accent); text-decoration-color: var(--accent); }

.container { max-width: var(--max); margin: 0 auto; padding-left: var(--pad); padding-right: var(--pad); }
.narrow { max-width: 820px; margin: 0 auto; padding-left: var(--pad); padding-right: var(--pad); }

.skip {
  position: absolute; left: -9999px; top: 0;
  background: var(--accent); color: #000; padding: 10px 16px; z-index: 100;
}
.skip:focus { left: 12px; top: 12px; }

/* ===== Header ===== */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(11, 15, 23, 0.85);
  backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav { display: flex; align-items: center; justify-content: space-between; padding-top: 18px; padding-bottom: 18px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); }
.brand:hover { color: var(--accent); }
.brand-mark {
  display: inline-grid; place-items: center;
  width: 34px; height: 34px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--accent), var(--accent-blue));
  color: #06121c; font-weight: 700; font-size: 11.5px; letter-spacing: 0.02em;
}
.brand-name { font-family: 'Fraunces', serif; font-weight: 600; font-size: 19px; letter-spacing: -0.01em; }

.primary-nav { display: flex; align-items: center; gap: 28px; }
.primary-nav a { text-decoration: none; color: var(--ink-dim); font-size: 15px; font-weight: 500; }
.primary-nav a:hover { color: var(--ink); }
.primary-nav .btn { color: var(--ink); }

@media (max-width: 720px) {
  .primary-nav { gap: 16px; }
  .primary-nav a:not(.btn) { display: none; }
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 22px; border-radius: 999px; font-size: 15px; font-weight: 600;
  text-decoration: none; transition: transform .12s, background .15s, border-color .15s, color .15s;
  border: 1px solid transparent; cursor: pointer; white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--accent); color: #06121c; }
.btn-primary:hover { background: #5ddec4; color: #06121c; }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line-strong); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn-block { display: flex; width: 100%; margin-top: 18px; }
.btn-large { padding: 16px 28px; font-size: 16px; }

/* ===== Hero ===== */
.hero { padding: clamp(56px, 9vw, 120px) 0 clamp(56px, 8vw, 96px); position: relative; overflow: hidden; }
.hero::before {
  content: '';
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 80% 50% at 20% 0%, rgba(78,201,176,0.10), transparent 60%),
    radial-gradient(ellipse 60% 40% at 90% 30%, rgba(106,169,255,0.07), transparent 60%);
  pointer-events: none;
}
.hero-grid { display: grid; grid-template-columns: 1.15fr 1fr; gap: clamp(32px, 5vw, 60px); align-items: center; position: relative; }
.hero-copy { max-width: 620px; }
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin: 28px 0 36px; }
.trust-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; border-top: 1px solid var(--line); padding-top: 22px; }
.trust-list li { color: var(--ink-dim); font-size: 15px; line-height: 1.55; padding-left: 22px; position: relative; }
.trust-list li::before { content: ''; position: absolute; left: 0; top: 11px; width: 12px; height: 1px; background: var(--ink-faint); }

.hero-card {
  background: linear-gradient(180deg, var(--bg-elev) 0%, var(--bg-alt) 100%);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(20px, 3vw, 28px);
  box-shadow: 0 30px 80px rgba(0,0,0,0.35);
}
.kpi-label { font-size: 12px; color: var(--ink-faint); text-transform: uppercase; letter-spacing: 0.16em; margin: 0 0 18px; font-weight: 600; }
.kpi-hero { font-family: 'Fraunces', serif; font-feature-settings: 'tnum'; font-size: clamp(36px, 4vw, 48px); font-weight: 600; color: var(--ink); letter-spacing: -0.02em; line-height: 1; margin: 0; }
.kpi-hero-note { color: var(--ink-dim); font-size: 15px; margin: 10px 0 24px; line-height: 1.55; max-width: 38ch; }
.kpi-support { list-style: none; padding: 0; margin: 0 0 22px; display: grid; gap: 12px; border-top: 1px solid var(--line); padding-top: 22px; }
.kpi-support li { font-size: 14px; color: var(--ink-dim); display: grid; grid-template-columns: 100px 1fr; gap: 14px; align-items: baseline; }
.kpi-support li span { font-family: 'Fraunces', serif; font-feature-settings: 'tnum'; font-weight: 600; color: var(--ink); font-size: 17px; letter-spacing: -0.01em; }
.kpi-foot { font-size: 12px; color: var(--ink-faint); margin: 0; line-height: 1.5; }

@media (max-width: 880px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-card { order: 2; }
}

/* ===== Bands ===== */
.band { padding: clamp(64px, 9vw, 110px) 0; border-top: 1px solid var(--line); }
.band-alt { background: var(--bg-alt); }
.band-problem { padding: clamp(48px, 6vw, 80px) 0; background: var(--bg-alt); }
.band-problem h2 { font-size: clamp(24px, 3vw, 34px); margin-bottom: 12px; }
.band-problem p { color: var(--ink-dim); font-size: clamp(17px, 1.6vw, 19px); max-width: 64ch; }

.section-head { margin-bottom: 48px; max-width: 700px; }

/* ===== Case studies (full-width rows, screenshot is the star) ===== */
.case-stack { display: grid; gap: clamp(48px, 7vw, 80px); }
.case-row { display: grid; grid-template-columns: 1.25fr 1fr; gap: clamp(28px, 4vw, 56px); align-items: center; }
.case-row-reverse { grid-template-columns: 1fr 1.25fr; }
.case-row-reverse .case-shot { order: 2; }
.case-shot {
  display: grid; place-items: center;
  line-height: 0; background: #0a1018;
  border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: 0 30px 80px rgba(0,0,0,0.4);
  transition: border-color .2s, transform .3s;
  aspect-ratio: 4 / 3;
  padding: 16px;
}
.case-shot img { width: 100%; height: 100%; display: block; object-fit: contain; transition: transform .5s; }
.case-shot:hover { border-color: var(--line-strong); }
.case-shot:hover img { transform: scale(1.02); }
.case-tag { text-transform: uppercase; letter-spacing: 0.14em; font-size: 11px; color: var(--ink-faint); font-weight: 600; margin: 0 0 10px; }
.case-row h3 { font-size: clamp(22px, 2.4vw, 28px); margin-bottom: 14px; }
.case-row h3 a { text-decoration: none; color: var(--ink); }
.case-row h3 a:hover { color: var(--accent); }
.case-row > .case-content > p { color: var(--ink-dim); font-size: 16px; }
.case-points { list-style: none; padding: 0; margin: 18px 0 22px; display: grid; gap: 8px; }
.case-points li { color: var(--ink-dim); font-size: 14px; padding-left: 18px; position: relative; line-height: 1.5; }
.case-points li::before { content: ''; position: absolute; left: 0; top: 9px; width: 8px; height: 1px; background: var(--ink-faint); }
.case-links { display: flex; flex-wrap: wrap; gap: 24px; margin: 0; }
.link-arrow {
  text-decoration: none; color: var(--ink); font-weight: 600; font-size: 14px;
  display: inline-flex; align-items: center; gap: 6px;
  border-bottom: 1px solid var(--line-strong);
  padding-bottom: 2px;
  transition: color .15s, border-color .15s;
}
.link-arrow::after { content: '→'; transition: transform .15s; }
.link-arrow:hover { color: var(--accent); border-color: var(--accent); }
.link-arrow:hover::after { transform: translateX(3px); }
.price-link { margin-top: 20px; display: inline-flex; }

@media (max-width: 880px) {
  .case-row, .case-row-reverse { grid-template-columns: 1fr; }
  .case-row-reverse .case-shot { order: 0; }
}

/* ===== Steps ===== */
.steps { counter-reset: step; list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.steps li { background: var(--bg-elev); border: 1px solid var(--line); border-radius: var(--radius); padding: clamp(22px, 3vw, 30px); position: relative; }
.step-num { font-family: 'Fraunces', serif; font-size: 14px; font-weight: 600; color: var(--accent); letter-spacing: 0.1em; margin-bottom: 14px; }
.steps h3 { margin-bottom: 8px; font-size: 19px; }
.steps p { color: var(--ink-dim); font-size: 15px; margin: 0; line-height: 1.6; }

@media (max-width: 720px) { .steps { grid-template-columns: 1fr; } }

/* ===== Pricing ===== */
.price-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.price-card { background: var(--bg-elev); border: 1px solid var(--line); border-radius: var(--radius); padding: clamp(24px, 3vw, 34px); position: relative; }
.price-card-feature { border-color: var(--accent); background: linear-gradient(180deg, rgba(78,201,176,0.06), var(--bg-elev) 50%); }
.price-tag { position: absolute; top: -12px; left: 28px; background: var(--accent); color: #06121c; padding: 5px 12px; border-radius: 999px; font-size: 12px; font-weight: 700; letter-spacing: 0.04em; margin: 0; }
.price-card h3 { margin-bottom: 16px; }
.price-amount { font-family: 'Fraunces', serif; font-feature-settings: 'tnum'; font-size: clamp(44px, 4.8vw, 56px); font-weight: 700; color: var(--ink); margin: 0; letter-spacing: -0.025em; line-height: 1; display: flex; align-items: baseline; gap: 2px; }
.price-amount .currency { font-size: 0.8em; color: var(--ink); margin-right: 2px; font-weight: 600; }
.price-amount .per { font-size: 0.36em; color: var(--ink); font-weight: 500; margin-left: 8px; letter-spacing: 0; opacity: 0.7; }
.price-note { color: var(--ink-faint); font-size: 13px; margin: 6px 0 22px; }
.price-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.price-list li { color: var(--ink-dim); font-size: 15px; padding-left: 22px; position: relative; line-height: 1.5; }
.price-list li::before { content: '✓'; position: absolute; left: 0; top: 0; color: var(--accent); font-weight: 700; }
.price-foot { margin-top: 32px; color: var(--ink-faint); text-align: center; font-size: 15px; }

@media (max-width: 880px) { .price-grid { grid-template-columns: 1fr; } }

/* ===== About ===== */
.about-grid { display: grid; grid-template-columns: 1.6fr 1fr; gap: clamp(32px, 5vw, 64px); align-items: start; }
.about-copy p { color: var(--ink-dim); }
.about-portrait { margin: 28px 0 0; max-width: 320px; }
.about-portrait img { width: 100%; height: auto; border-radius: var(--radius); display: block; border: 1px solid var(--line); }
.about-portrait figcaption { color: var(--ink-faint); font-size: 13px; margin-top: 10px; font-style: italic; }

.about-stack { display: grid; gap: 14px; }
.about-stat { background: var(--bg-elev); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 18px 20px; }
.about-stat strong { display: block; font-family: 'Fraunces', serif; font-size: 22px; color: var(--accent); margin-bottom: 4px; font-weight: 600; }
.about-stat span { color: var(--ink-dim); font-size: 14px; }
.about-stat-cta { border-color: var(--line-strong); }
.about-stat-cta .link-arrow { margin-top: 12px; }

@media (max-width: 880px) { .about-grid { grid-template-columns: 1fr; } }

/* ===== FAQ ===== */
#faq details {
  background: var(--bg-elev); border: 1px solid var(--line); border-radius: var(--radius-sm);
  padding: 18px 22px; margin-bottom: 12px;
}
#faq summary {
  cursor: pointer; font-weight: 600; font-size: 16px;
  list-style: none; display: flex; justify-content: space-between; gap: 16px; align-items: center;
}
#faq summary::-webkit-details-marker { display: none; }
#faq summary::after { content: '+'; color: var(--accent); font-size: 22px; font-weight: 400; transition: transform .15s; }
#faq details[open] summary::after { transform: rotate(45deg); }
#faq details p { margin: 14px 0 0; color: var(--ink-dim); font-size: 15px; line-height: 1.65; }

/* ===== CTA band ===== */
.band-cta { background: linear-gradient(180deg, var(--bg-alt) 0%, var(--bg) 100%); text-align: center; }
.band-cta h2 { font-size: clamp(30px, 4vw, 44px); margin-bottom: 16px; }
.band-cta p { color: var(--ink-dim); max-width: 56ch; margin: 0 auto 28px; }
.cta-actions { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }
.contact-foot { margin-top: 24px; font-size: 14px; color: var(--ink-faint); }

/* ===== Footer ===== */
.site-footer { background: var(--bg-alt); border-top: 1px solid var(--line); padding: 40px 0 36px; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 32px; align-items: start; }
.footer-brand { font-family: 'Fraunces', serif; font-size: 19px; margin: 0 0 8px; }
.footer-line { color: var(--ink-faint); font-size: 14px; max-width: 38ch; margin: 0; line-height: 1.55; }
.site-footer nav { display: flex; flex-direction: column; gap: 8px; }
.site-footer nav a { text-decoration: none; color: var(--ink-dim); font-size: 14px; }
.site-footer nav a:hover { color: var(--ink); }
.copyright { color: var(--ink-faint); font-size: 13px; align-self: end; margin: 0; }

@media (max-width: 720px) {
  .footer-grid { grid-template-columns: 1fr; gap: 18px; }
}

/* ===== Case study detail pages ===== */
.cs-hero { padding: clamp(60px, 9vw, 110px) 0 clamp(40px, 6vw, 64px); border-bottom: 1px solid var(--line); }
.cs-hero .breadcrumb { color: var(--ink-faint); font-size: 14px; margin-bottom: 18px; }
.cs-hero .breadcrumb a { color: var(--ink-dim); text-decoration: none; }
.cs-hero .breadcrumb a:hover { color: var(--accent); }
.cs-hero h1 { max-width: 22ch; }
.cs-hero .lede { max-width: 60ch; }
.cs-meta { display: flex; flex-wrap: wrap; gap: 22px; margin-top: 28px; }
.cs-meta div { font-size: 14px; color: var(--ink-dim); }
.cs-meta strong { display: block; color: var(--ink); font-weight: 600; margin-bottom: 2px; font-size: 13px; text-transform: uppercase; letter-spacing: 0.1em; color: var(--accent); }

.cs-section { padding: clamp(40px, 6vw, 80px) 0; border-bottom: 1px solid var(--line); }
.cs-section h2 { margin-bottom: 18px; }
.cs-section .narrow > p { color: var(--ink-dim); }
.cs-findings { list-style: none; padding: 0; margin: 32px 0 0; display: grid; gap: 16px; }
.cs-findings li { background: var(--bg-elev); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 22px 26px; }
.cs-findings strong { display: block; color: var(--accent); font-size: 22px; font-family: 'Fraunces', serif; font-weight: 600; margin-bottom: 6px; }
.cs-findings p { margin: 0; color: var(--ink-dim); font-size: 15px; }

.cs-figure { margin: 32px 0; }
.cs-figure img { width: 100%; height: auto; border-radius: var(--radius-sm); border: 1px solid var(--line); display: block; }
.cs-figure figcaption { color: var(--ink-faint); font-size: 13px; margin-top: 10px; line-height: 1.55; }