:root {
  --btk-ink: #17231f;
  --btk-muted: #58645f;
  --btk-red: #bb2d2b;
  --btk-red-dark: #8f1f1e;
  --btk-cream: #f5f2eb;
  --btk-line: #d8ddd9;
  --btk-white: #fff;
}

.btk-rebuild { color: var(--btk-ink); font-size: 17px; line-height: 1.65; }
.btk-rebuild *, .btk-rebuild *::before, .btk-rebuild *::after { box-sizing: border-box; }
.btk-shell { width: min(1180px, calc(100% - 40px)); margin-inline: auto; }
.btk-hero { padding: clamp(72px, 10vw, 136px) 0; background: linear-gradient(125deg, #f7f4ed 0%, #eef1ed 62%, #e4e9e4 100%); }
.btk-hero__grid { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(280px, .6fr); gap: clamp(32px, 7vw, 88px); align-items: center; }
.btk-eyebrow { margin: 0 0 14px; color: var(--btk-red-dark); font-size: .78rem; font-weight: 800; letter-spacing: .13em; text-transform: uppercase; }
.btk-rebuild h1, .btk-rebuild h2, .btk-rebuild h3 { color: var(--btk-ink); font-family: inherit; font-weight: 750; letter-spacing: -.025em; }
.btk-rebuild h1 { max-width: 820px; margin: 0; font-size: clamp(2.4rem, 6vw, 5.15rem); line-height: 1.02; }
.btk-rebuild h2 { margin: 0 0 34px; font-size: clamp(1.85rem, 4vw, 3.2rem); line-height: 1.12; }
.btk-rebuild h3 { margin: 0 0 12px; font-size: 1.25rem; line-height: 1.25; }
.btk-lead { max-width: 760px; margin: 28px 0 0; color: var(--btk-muted); font-size: clamp(1.05rem, 2vw, 1.3rem); }
.btk-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.btk-button { display: inline-flex; min-height: 50px; align-items: center; justify-content: center; padding: 12px 22px; border: 2px solid transparent; border-radius: 4px; font-weight: 750; text-decoration: none; transition: background-color .2s, border-color .2s, color .2s, transform .2s; }
.btk-button:hover { transform: translateY(-1px); }
.btk-button:focus-visible, .btk-card a:focus-visible { outline: 3px solid #f0a51e; outline-offset: 3px; }
.btk-button--primary { background: var(--btk-red); color: var(--btk-white); }
.btk-button--primary:hover { background: var(--btk-red-dark); color: var(--btk-white); }
.btk-button--secondary { border-color: var(--btk-ink); color: var(--btk-ink); }
.btk-button--secondary:hover { background: var(--btk-ink); color: var(--btk-white); }
.btk-hero__panel { padding: clamp(28px, 4vw, 44px); border-top: 5px solid var(--btk-red); background: rgba(255,255,255,.82); box-shadow: 0 18px 50px rgba(23,35,31,.12); }
.btk-hero__panel h2 { margin-bottom: 18px; font-size: 1.35rem; }
.btk-hero__panel ul { margin: 0; padding-left: 22px; }
.btk-hero__panel li + li { margin-top: 8px; }
.btk-section { padding: clamp(70px, 9vw, 118px) 0; }
.btk-section--tint { background: var(--btk-cream); }
.btk-card-grid { display: grid; gap: 20px; }
.btk-card-grid--four { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.btk-card-grid--two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.btk-card-grid--three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.btk-card { min-height: 260px; display: flex; flex-direction: column; padding: 28px; border: 1px solid var(--btk-line); background: var(--btk-white); }
.btk-card p { margin: 0; color: var(--btk-muted); }
.btk-card a { margin-top: auto; padding-top: 24px; color: var(--btk-red-dark); font-weight: 750; text-decoration: none; }
.btk-service { display: grid; grid-template-columns: 64px 1fr; gap: 20px; padding: 30px; border-bottom: 1px solid #cfd5cf; background: rgba(255,255,255,.56); }
.btk-service > span { color: var(--btk-red); font-size: 1.4rem; font-weight: 800; }
.btk-service p { margin: 0; color: var(--btk-muted); }
.btk-process { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 18px; margin: 0; padding: 0; list-style: none; }
.btk-process li { padding-top: 20px; border-top: 3px solid var(--btk-ink); }
.btk-process span { display: block; margin-bottom: 22px; color: var(--btk-red); font-size: 1.55rem; font-weight: 800; }
.btk-process strong, .btk-process small { display: block; }
.btk-process small { margin-top: 8px; color: var(--btk-muted); font-size: .92rem; line-height: 1.5; }
.btk-note { max-width: 820px; margin: 34px 0 0; padding: 18px 20px; border-left: 4px solid var(--btk-red); background: var(--btk-cream); color: var(--btk-muted); }
.btk-cta { padding: clamp(64px, 8vw, 96px) 0; background: var(--btk-red-dark); color: var(--btk-white); }
.btk-cta h2, .btk-cta .btk-eyebrow { color: var(--btk-white); }
.btk-cta h2 { margin-bottom: 12px; }
.btk-cta p { margin: 0; }
.btk-cta__grid { display: grid; grid-template-columns: 1fr auto; gap: 40px; align-items: center; }
.btk-button--light { background: var(--btk-white); color: var(--btk-red-dark); }
.btk-button--light:hover { background: var(--btk-cream); color: var(--btk-red-dark); }
.btk-service-hero { padding: clamp(72px, 9vw, 124px) 0; background: linear-gradient(125deg, #f7f4ed 0%, #edf1ed 100%); }
.btk-service-hero h1 { max-width: 900px; }
.btk-content-grid { display: grid; grid-template-columns: minmax(0, .8fr) minmax(320px, 1.2fr); gap: clamp(36px, 8vw, 100px); align-items: start; }
.btk-check-list { margin: 0; padding: 0; list-style: none; }
.btk-check-list li { position: relative; padding: 18px 0 18px 34px; border-bottom: 1px solid var(--btk-line); }
.btk-check-list li::before { content: '✓'; position: absolute; left: 0; color: var(--btk-red); font-weight: 800; }
.btk-output-card { min-height: 190px; padding: 26px; border-top: 4px solid var(--btk-red); background: var(--btk-white); }
.btk-output-card span { color: var(--btk-red); font-weight: 800; }
.btk-output-card p { margin: 28px 0 0; color: var(--btk-muted); }

@media (max-width: 980px) {
  .btk-hero__grid, .btk-cta__grid { grid-template-columns: 1fr; }
  .btk-card-grid--four { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .btk-card-grid--three { grid-template-columns: 1fr; }
  .btk-process { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .btk-content-grid { grid-template-columns: 1fr; }
}

@media (max-width: 620px) {
  .btk-shell { width: min(100% - 28px, 1180px); }
  .btk-hero { padding: 64px 0; }
  .btk-card-grid--four, .btk-card-grid--two, .btk-card-grid--three, .btk-process { grid-template-columns: 1fr; }
  .btk-card { min-height: 220px; }
  .btk-service { grid-template-columns: 46px 1fr; padding: 24px 20px; }
  .btk-actions .btk-button { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  .btk-button { transition: none; }
}