/* =========================================================
   BTC Korea — New Main Page Stylesheet (v1 restored)
   Scope: .btck-* prefix to insulate from legacy brain.css
   ========================================================= */

/* ---------- Design Tokens ---------- */
:root {
  --btck-primary: #1ebbcc;
  --btck-primary-deep: #149aa9;
  --btck-primary-soft: #e6f7f9;

  --btck-accent: #ff8a65;
  --btck-accent-deep: #f4724b;
  --btck-accent-warm: #f4a261;

  --btck-bg: #ffffff;
  --btck-bg-warm: #fafaf7;
  --btck-bg-card: #ffffff;
  --btck-bg-soft: #f5f3ee;

  --btck-text: #1a2332;
  --btck-text-sub: #5a6478;
  --btck-text-soft: #8a93a3;
  --btck-text-invert: #ffffff;

  --btck-border: #ede8e0;
  --btck-border-strong: #d9d2c4;

  --btck-shadow-sm: 0 2px 8px rgba(26, 35, 50, 0.05);
  --btck-shadow-md: 0 8px 24px rgba(26, 35, 50, 0.08);
  --btck-shadow-lg: 0 16px 40px rgba(26, 35, 50, 0.10);

  --btck-radius-sm: 8px;
  --btck-radius-md: 14px;
  --btck-radius-lg: 24px;
  --btck-radius-pill: 480px;

  --btck-font-sans: "Pretendard", "SUIT Variable", "Noto Sans KR", -apple-system,
    BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --btck-font-display: "Inter", "Pretendard", "SUIT Variable", sans-serif;

  --btck-section-py: 120px;
  --btck-container: 1200px;

  --btck-ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --btck-dur: 600ms;
}

@media (max-width: 768px) {
  :root { --btck-section-py: 80px; }
}

/* ---------- Scoped Reset ---------- */
.btck-page {
  font-family: var(--btck-font-sans);
  color: var(--btck-text);
  background: var(--btck-bg);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: "ss03", "cv11";
}
.btck-page *, .btck-page *::before, .btck-page *::after { box-sizing: border-box; }
.btck-page h1, .btck-page h2, .btck-page h3, .btck-page h4,
.btck-page p, .btck-page ul, .btck-page ol { margin: 0; padding: 0; }
.btck-page ul, .btck-page ol { list-style: none; }
.btck-page a { color: inherit; text-decoration: none; }
.btck-page img { display: block; max-width: 100%; height: auto; }
.btck-page button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }

/* ---------- Reveal ---------- */
.btck-reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--btck-dur) var(--btck-ease),
    transform var(--btck-dur) var(--btck-ease);
  will-change: opacity, transform;
}
.btck-reveal.is-in { opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
  .btck-reveal, .btck-reveal.is-in { opacity: 1; transform: none; transition: none; }
}

/* ---------- Common ---------- */
.btck-container {
  width: min(100% - 40px, var(--btck-container));
  margin-inline: auto;
}
.btck-section { padding-block: var(--btck-section-py); }

.btck-eyebrow {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--btck-primary-deep);
  margin-bottom: 18px;
}
.btck-title {
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.3;
  font-weight: 700;
  color: var(--btck-text);
  letter-spacing: -0.01em;
}
.btck-subtitle {
  margin-top: 18px;
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: 1.8;
  color: var(--btck-text-sub);
  max-width: 720px;
}

.btck-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 16px 28px;
  font-size: 16px;
  font-weight: 600;
  border-radius: var(--btck-radius-pill);
  transition: transform 220ms var(--btck-ease),
    box-shadow 220ms var(--btck-ease),
    background 220ms var(--btck-ease);
  white-space: nowrap;
}
.btck-btn--primary {
  background: var(--btck-accent);
  color: #fff;
  box-shadow: 0 8px 18px rgba(255, 138, 101, 0.32);
}
.btck-btn--primary:hover {
  background: var(--btck-accent-deep);
  transform: translateY(-2px);
  box-shadow: 0 12px 24px rgba(255, 138, 101, 0.38);
}
.btck-btn--secondary {
  background: transparent;
  color: var(--btck-text);
  border: 1.5px solid var(--btck-border-strong);
}
.btck-btn--secondary:hover {
  background: var(--btck-bg-warm);
  transform: translateY(-2px);
}
.btck-btn--ghost {
  background: transparent;
  color: var(--btck-primary-deep);
  font-weight: 600;
}
.btck-btn--ghost:hover { color: var(--btck-accent-deep); }

/* =========================================================
   Section 1: Hero
   ========================================================= */
.btck-hero {
  position: relative;
  min-height: calc(100vh - 90px);
  display: flex;
  align-items: center;
  padding-block: 100px 140px;
  overflow: hidden;
  background:
    radial-gradient(1200px 700px at 12% 0%, rgba(30, 187, 204, 0.16), transparent 60%),
    radial-gradient(900px 600px at 95% 100%, rgba(255, 138, 101, 0.14), transparent 60%),
    linear-gradient(180deg, #fafaf7 0%, #ffffff 100%);
}
.btck-hero__inner {
  position: relative;
  z-index: 2;
  text-align: center;
  width: min(100% - 40px, 960px);
  margin-inline: auto;
}
.btck-hero__brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 16px;
  border-radius: var(--btck-radius-pill);
  background: rgba(30, 187, 204, 0.08);
  border: 1px solid rgba(30, 187, 204, 0.18);
  color: var(--btck-primary-deep);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  margin-bottom: 28px;
}
.btck-hero__brand-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--btck-primary);
  box-shadow: 0 0 0 4px rgba(30, 187, 204, 0.18);
}
.btck-hero__headline {
  font-size: clamp(34px, 6.4vw, 64px);
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: -0.02em;
  color: var(--btck-text);
}
.btck-hero__headline em {
  font-style: normal;
  background: linear-gradient(120deg, var(--btck-primary) 0%, var(--btck-primary-deep) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.btck-hero__sub {
  margin-top: 26px;
  font-size: clamp(16px, 1.8vw, 19px);
  line-height: 1.8;
  color: var(--btck-text-sub);
  max-width: 680px;
  margin-inline: auto;
}
.btck-hero__cta {
  margin-top: 44px;
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}
.btck-hero__trust {
  margin-top: 38px;
  display: flex;
  gap: 22px;
  justify-content: center;
  flex-wrap: wrap;
  color: var(--btck-text-soft);
  font-size: 14px;
}
.btck-hero__trust span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.btck-hero__trust span::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--btck-primary);
  opacity: 0.55;
}
.btck-hero__scroll {
  position: absolute;
  left: 50%;
  bottom: 32px;
  transform: translateX(-50%);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--btck-text-soft);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  text-transform: uppercase;
}
.btck-hero__scroll::after {
  content: "";
  width: 1px; height: 36px;
  background: linear-gradient(180deg, var(--btck-text-soft), transparent);
  animation: btck-scrollHint 1.8s ease-in-out infinite;
}
@keyframes btck-scrollHint {
  0%, 100% { transform: scaleY(0.6); transform-origin: top; opacity: 0.4; }
  50%      { transform: scaleY(1);   transform-origin: top; opacity: 1;   }
}
@media (max-width: 640px) {
  .btck-hero { padding-block: 70px 110px; min-height: auto; }
  .btck-hero__cta .btck-btn { width: 100%; }
  .btck-hero__scroll { display: none; }
}

/* =========================================================
   Section 2: Empathy
   ========================================================= */
.btck-empathy { background: var(--btck-bg-warm); }
.btck-empathy__head { text-align: center; margin-bottom: 56px; }
.btck-empathy__head .btck-subtitle { margin-inline: auto; }
.btck-empathy__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
@media (max-width: 900px) {
  .btck-empathy__grid { grid-template-columns: 1fr; gap: 16px; }
}
.btck-empathy__card {
  background: var(--btck-bg-card);
  border: 1px solid var(--btck-border);
  border-radius: var(--btck-radius-lg);
  padding: 36px 28px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: transform 280ms var(--btck-ease),
    box-shadow 280ms var(--btck-ease),
    border-color 280ms var(--btck-ease);
}
.btck-empathy__card:hover,
.btck-empathy__card:focus-within {
  transform: translateY(-4px);
  box-shadow: var(--btck-shadow-md);
  border-color: rgba(30, 187, 204, 0.35);
}
.btck-empathy__num {
  font-family: var(--btck-font-display);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--btck-primary-deep);
}
.btck-empathy__line {
  font-size: 20px;
  line-height: 1.55;
  font-weight: 600;
  color: var(--btck-text);
  letter-spacing: -0.01em;
}
.btck-empathy__body {
  font-size: 15px;
  line-height: 1.8;
  color: var(--btck-text-sub);
}

/* =========================================================
   Section 3: Guide
   ========================================================= */
.btck-guide { background: var(--btck-bg); }
.btck-guide__head { text-align: center; max-width: 760px; margin: 0 auto 56px; }
.btck-guide__head .btck-subtitle { margin-inline: auto; margin-top: 22px; }
.btck-guide__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
@media (max-width: 900px) {
  .btck-guide__grid { grid-template-columns: 1fr; }
}
.btck-guide__card {
  position: relative;
  padding: 40px 32px;
  border-radius: var(--btck-radius-lg);
  background: linear-gradient(180deg, #ffffff 0%, var(--btck-bg-warm) 100%);
  border: 1px solid var(--btck-border);
  text-align: left;
  overflow: hidden;
  transition: transform 280ms var(--btck-ease), box-shadow 280ms var(--btck-ease);
}
.btck-guide__card:hover {
  transform: translateY(-4px);
  box-shadow: var(--btck-shadow-md);
}
.btck-guide__symbol {
  font-family: var(--btck-font-display);
  font-size: clamp(48px, 5vw, 64px);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1;
  background: linear-gradient(120deg, var(--btck-primary) 0%, var(--btck-primary-deep) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 18px;
}
.btck-guide__title {
  font-size: 20px;
  font-weight: 700;
  color: var(--btck-text);
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}
.btck-guide__desc {
  font-size: 15px;
  line-height: 1.8;
  color: var(--btck-text-sub);
}
.btck-guide__statement {
  text-align: center;
  max-width: 780px;
  margin: 56px auto 0;
  padding: 32px;
  border-top: 1px solid var(--btck-border);
  font-size: 17px;
  line-height: 1.9;
  color: var(--btck-text-sub);
}

/* =========================================================
   Section 4: Plan (timeline)
   ========================================================= */
.btck-plan { background: var(--btck-bg-warm); }
.btck-plan__head { text-align: center; margin-bottom: 64px; }
.btck-plan__head .btck-subtitle { margin-inline: auto; }

.btck-plan__timeline {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  max-width: 900px;
  margin-inline: auto;
}
.btck-plan__timeline::before {
  content: "";
  position: absolute;
  left: 32px;
  top: 24px;
  bottom: 24px;
  width: 2px;
  background: linear-gradient(180deg,
    rgba(30, 187, 204, 0.4) 0%,
    rgba(30, 187, 204, 0.12) 100%);
}
@media (max-width: 640px) { .btck-plan__timeline::before { left: 22px; } }

.btck-plan__step {
  position: relative;
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 24px;
  align-items: flex-start;
  background: var(--btck-bg-card);
  border: 1px solid var(--btck-border);
  border-radius: var(--btck-radius-lg);
  padding: 28px 28px 28px 24px;
  margin-left: 16px;
  transition: transform 280ms var(--btck-ease), box-shadow 280ms var(--btck-ease);
}
.btck-plan__step:hover {
  transform: translateY(-2px);
  box-shadow: var(--btck-shadow-md);
}
@media (max-width: 640px) {
  .btck-plan__step {
    grid-template-columns: 56px 1fr;
    gap: 16px;
    padding: 22px 20px;
    margin-left: 8px;
  }
}
.btck-plan__marker {
  position: relative;
  z-index: 1;
  width: 64px; height: 64px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--btck-primary) 0%, var(--btck-primary-deep) 100%);
  color: #fff;
  font-family: var(--btck-font-display);
  font-size: 22px;
  font-weight: 700;
  box-shadow: 0 8px 20px rgba(30, 187, 204, 0.28);
  margin-left: -36px;
}
@media (max-width: 640px) {
  .btck-plan__marker { width: 50px; height: 50px; font-size: 17px; margin-left: -28px; }
}
.btck-plan__step-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 6px;
}
.btck-plan__step-eyebrow {
  font-family: var(--btck-font-display);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--btck-primary-deep);
  font-weight: 600;
}
.btck-plan__step-duration {
  font-size: 12px;
  color: var(--btck-text-soft);
  padding: 2px 10px;
  border: 1px solid var(--btck-border);
  border-radius: var(--btck-radius-pill);
}
.btck-plan__step-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--btck-text);
  letter-spacing: -0.01em;
  margin-bottom: 10px;
}
.btck-plan__step-body {
  font-size: 15px;
  line-height: 1.8;
  color: var(--btck-text-sub);
}
.btck-plan__step-body strong { color: var(--btck-text); font-weight: 600; }
.btck-plan__note {
  margin-top: 40px;
  text-align: center;
  font-size: 14px;
  color: var(--btck-text-soft);
  line-height: 1.8;
}

/* =========================================================
   Section 5: Transformation
   ========================================================= */
.btck-transformation { background: var(--btck-bg); }
.btck-transformation__head { text-align: center; margin-bottom: 56px; }
.btck-transformation__head .btck-subtitle { margin-inline: auto; }

.btck-video-card {
  position: relative;
  max-width: 960px;
  margin: 0 auto 48px;
  border-radius: var(--btck-radius-lg);
  overflow: hidden;
  background: linear-gradient(135deg, #1a2332 0%, #2a3a52 100%);
  aspect-ratio: 16 / 9;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform 280ms var(--btck-ease), box-shadow 280ms var(--btck-ease);
}
.btck-video-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--btck-shadow-lg);
}
.btck-video-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 30% 30%, rgba(30, 187, 204, 0.25), transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(255, 138, 101, 0.18), transparent 50%);
}
.btck-video-card__inner {
  position: relative;
  z-index: 1;
  text-align: center;
  color: #fff;
}
.btck-video-card__play {
  width: 78px; height: 78px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.92);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 18px;
  transition: transform 220ms var(--btck-ease);
}
.btck-video-card:hover .btck-video-card__play { transform: scale(1.08); }
.btck-video-card__play::before {
  content: "";
  border-style: solid;
  border-width: 14px 0 14px 22px;
  border-color: transparent transparent transparent var(--btck-primary-deep);
  margin-left: 6px;
}
.btck-video-card__label {
  font-size: 14px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  opacity: 0.7;
  margin-bottom: 8px;
}
.btck-video-card__title {
  font-size: clamp(18px, 2.4vw, 22px);
  font-weight: 600;
  letter-spacing: -0.01em;
}

.btck-testimonials {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
@media (max-width: 900px) { .btck-testimonials { grid-template-columns: 1fr; } }

.btck-testimonial {
  background: var(--btck-bg-warm);
  border: 1px solid var(--btck-border);
  border-radius: var(--btck-radius-lg);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: transform 280ms var(--btck-ease), box-shadow 280ms var(--btck-ease);
}
.btck-testimonial:hover {
  transform: translateY(-3px);
  box-shadow: var(--btck-shadow-md);
}
.btck-testimonial__tag {
  display: inline-flex;
  align-self: flex-start;
  padding: 4px 12px;
  border-radius: var(--btck-radius-pill);
  background: var(--btck-primary-soft);
  color: var(--btck-primary-deep);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
}
.btck-testimonial__pull {
  font-size: 19px;
  line-height: 1.55;
  font-weight: 600;
  color: var(--btck-text);
  letter-spacing: -0.01em;
}
.btck-testimonial__body {
  font-size: 15px;
  line-height: 1.85;
  color: var(--btck-text-sub);
}
.btck-testimonial__author {
  margin-top: auto;
  font-size: 13px;
  color: var(--btck-text-soft);
  padding-top: 12px;
  border-top: 1px dashed var(--btck-border);
}

/* =========================================================
   Section 6: Conditions
   ========================================================= */
.btck-conditions { background: var(--btck-bg-warm); }
.btck-conditions__head { text-align: center; margin-bottom: 56px; }
.btck-conditions__head .btck-subtitle { margin-inline: auto; }
.btck-conditions__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
@media (max-width: 900px) { .btck-conditions__grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .btck-conditions__grid { grid-template-columns: 1fr; } }

.btck-condition {
  position: relative;
  display: block;
  background: var(--btck-bg-card);
  border: 1px solid var(--btck-border);
  border-radius: var(--btck-radius-lg);
  padding: 28px 26px;
  text-decoration: none;
  color: var(--btck-text);
  transition: transform 280ms var(--btck-ease),
    box-shadow 280ms var(--btck-ease),
    border-color 280ms var(--btck-ease);
}
.btck-condition:hover,
.btck-condition:focus-visible {
  transform: translateY(-3px);
  box-shadow: var(--btck-shadow-md);
  border-color: rgba(30, 187, 204, 0.4);
  outline: none;
}
.btck-condition__icon {
  width: 44px; height: 44px;
  border-radius: 12px;
  background: var(--btck-primary-soft);
  color: var(--btck-primary-deep);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  font-size: 22px;
  font-weight: 700;
}
.btck-condition__title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
  display: flex;
  align-items: center;
  gap: 8px;
}
.btck-condition__desc {
  font-size: 14px;
  line-height: 1.75;
  color: var(--btck-text-sub);
}
.btck-condition__arrow {
  position: absolute;
  top: 26px;
  right: 24px;
  color: var(--btck-text-soft);
  transition: transform 220ms var(--btck-ease), color 220ms var(--btck-ease);
}
.btck-condition:hover .btck-condition__arrow {
  transform: translateX(3px);
  color: var(--btck-primary-deep);
}
.btck-condition__pending {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: var(--btck-radius-pill);
  background: var(--btck-bg-soft);
  color: var(--btck-text-soft);
  letter-spacing: 0.04em;
}

/* =========================================================
   Section 7: Press
   ========================================================= */
.btck-press { background: var(--btck-bg); }
.btck-press__head { text-align: center; margin-bottom: 56px; }
.btck-press__head .btck-subtitle { margin-inline: auto; }
.btck-press__quote {
  font-size: clamp(20px, 2.2vw, 26px);
  line-height: 1.5;
  font-weight: 600;
  color: var(--btck-text);
  letter-spacing: -0.01em;
  max-width: 820px;
  margin: 0 auto 18px;
}
.btck-press__quote em {
  font-style: normal;
  color: var(--btck-primary-deep);
}
.btck-press__logos {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  align-items: center;
  margin: 56px 0 40px;
}
@media (max-width: 900px) { .btck-press__logos { grid-template-columns: repeat(2, 1fr); } }
.btck-press__logo {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 36px 28px;
  border: 1px solid var(--btck-border);
  border-radius: var(--btck-radius-md);
  background: var(--btck-bg-warm);
  min-height: 200px;
  filter: grayscale(100%);
  opacity: 0.78;
  transition: filter 220ms var(--btck-ease),
    opacity 220ms var(--btck-ease),
    transform 220ms var(--btck-ease);
}
.btck-press__logo:hover {
  filter: grayscale(0);
  opacity: 1;
  transform: translateY(-2px);
}
.btck-press__logo img {
  max-height: 110px;
  width: auto;
  max-width: 100%;
  object-fit: contain;
}
.btck-press__highlight {
  margin-top: 24px;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 24px 28px;
  border-radius: var(--btck-radius-lg);
  background: linear-gradient(135deg, #102137 0%, #1a3552 100%);
  color: #fff;
}
@media (max-width: 640px) {
  .btck-press__highlight { flex-direction: column; text-align: center; }
}
.btck-press__highlight-badge {
  flex-shrink: 0;
  width: 56px; height: 56px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.08em;
  font-family: var(--btck-font-display);
}
.btck-press__highlight-text {
  font-size: 15px;
  line-height: 1.75;
  opacity: 0.92;
}
.btck-press__highlight-text strong { color: #fff; font-weight: 700; }

/* =========================================================
   Section 8: FAQ
   ========================================================= */
.btck-faq { background: var(--btck-bg-warm); }
.btck-faq__head {
  max-width: 820px;
  margin: 0 auto 48px;
  text-align: center;
}
.btck-faq__list {
  max-width: 820px;
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.btck-faq__item {
  background: var(--btck-bg-card);
  border: 1px solid var(--btck-border);
  border-radius: var(--btck-radius-md);
  overflow: hidden;
  transition: border-color 220ms var(--btck-ease), box-shadow 220ms var(--btck-ease);
}
.btck-faq__item.is-open {
  border-color: rgba(30, 187, 204, 0.45);
  box-shadow: var(--btck-shadow-sm);
}
.btck-faq__trigger {
  width: 100%;
  padding: 22px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  text-align: left;
  font-size: 17px;
  font-weight: 600;
  color: var(--btck-text);
  letter-spacing: -0.01em;
  background: transparent;
}
.btck-faq__icon {
  flex-shrink: 0;
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--btck-primary-soft);
  color: var(--btck-primary-deep);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  transition: transform 280ms var(--btck-ease), background 280ms var(--btck-ease);
}
.btck-faq__icon::before,
.btck-faq__icon::after {
  content: "";
  position: absolute;
  background: currentColor;
  border-radius: 1px;
  transition: transform 280ms var(--btck-ease);
}
.btck-faq__icon::before { width: 12px; height: 2px; }
.btck-faq__icon::after  { width: 2px; height: 12px; }
.btck-faq__item.is-open .btck-faq__icon {
  background: var(--btck-primary);
  color: #fff;
}
.btck-faq__item.is-open .btck-faq__icon::after { transform: scaleY(0); }
.btck-faq__panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height 320ms var(--btck-ease);
}
.btck-faq__panel-inner {
  padding: 0 24px 24px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--btck-text-sub);
}

/* =========================================================
   Section 9: Final CTA (form)
   ========================================================= */
.btck-cta {
  background:
    radial-gradient(900px 600px at 10% 20%, rgba(30, 187, 204, 0.12), transparent 60%),
    radial-gradient(900px 600px at 95% 90%, rgba(255, 138, 101, 0.10), transparent 60%),
    linear-gradient(180deg, #ffffff 0%, #fafaf7 100%);
}
.btck-cta__grid {
  display: grid;
  grid-template-columns: 1fr 1.05fr;
  gap: 48px;
  align-items: start;
}
@media (max-width: 900px) {
  .btck-cta__grid { grid-template-columns: 1fr; gap: 32px; }
}
.btck-cta__intro h2 {
  font-size: clamp(28px, 3.6vw, 42px);
  line-height: 1.25;
  font-weight: 700;
  color: var(--btck-text);
  letter-spacing: -0.02em;
}
.btck-cta__intro h2 em {
  font-style: normal;
  color: var(--btck-primary-deep);
}
.btck-cta__intro p {
  margin-top: 18px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--btck-text-sub);
}
.btck-cta__trust {
  margin-top: 32px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.btck-cta__trust-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 15px;
  color: var(--btck-text);
  line-height: 1.7;
}
.btck-cta__trust-item::before {
  content: "";
  flex-shrink: 0;
  width: 22px; height: 22px;
  border-radius: 50%;
  background: var(--btck-primary-soft);
  background-image:
    linear-gradient(135deg, transparent 38%, var(--btck-primary-deep) 38%, var(--btck-primary-deep) 46%, transparent 46%),
    linear-gradient(45deg, transparent 50%, var(--btck-primary-deep) 50%, var(--btck-primary-deep) 58%, transparent 58%);
  background-size: 14px 14px, 14px 14px;
  background-position: 4px 6px, 4px 6px;
  background-repeat: no-repeat;
  margin-top: 2px;
}
.btck-cta__form {
  background: var(--btck-bg-card);
  border: 1px solid var(--btck-border);
  border-radius: var(--btck-radius-lg);
  padding: 36px 32px;
  box-shadow: var(--btck-shadow-md);
}
@media (max-width: 520px) { .btck-cta__form { padding: 28px 22px; } }
.btck-cta__form-title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 22px;
  color: var(--btck-text);
}
.btck-field { display: flex; flex-direction: column; margin-bottom: 18px; }
.btck-field label {
  font-size: 13px;
  font-weight: 600;
  color: var(--btck-text);
  margin-bottom: 8px;
}
.btck-field label .req { color: var(--btck-accent-deep); margin-left: 2px; }
.btck-field input,
.btck-field select,
.btck-field textarea {
  width: 100%;
  font: inherit;
  font-size: 15px;
  padding: 13px 14px;
  border: 1.5px solid var(--btck-border);
  border-radius: var(--btck-radius-sm);
  background: var(--btck-bg);
  color: var(--btck-text);
  transition: border-color 180ms var(--btck-ease), box-shadow 180ms var(--btck-ease);
}
.btck-field input:focus,
.btck-field select:focus,
.btck-field textarea:focus {
  outline: none;
  border-color: var(--btck-primary);
  box-shadow: 0 0 0 4px rgba(30, 187, 204, 0.14);
}
.btck-field.has-error input,
.btck-field.has-error select,
.btck-field.has-error textarea { border-color: var(--btck-accent-deep); }
.btck-field__error {
  display: none;
  margin-top: 6px;
  font-size: 12px;
  color: var(--btck-accent-deep);
}
.btck-field.has-error .btck-field__error { display: block; }
.btck-radios { display: flex; flex-wrap: wrap; gap: 8px; }
.btck-radios label {
  position: relative;
  padding: 10px 16px;
  border: 1.5px solid var(--btck-border);
  border-radius: var(--btck-radius-pill);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: border-color 180ms var(--btck-ease),
    background 180ms var(--btck-ease),
    color 180ms var(--btck-ease);
  margin-bottom: 0;
}
.btck-radios input {
  position: absolute;
  opacity: 0;
  inset: 0;
  width: 100%; height: 100%;
  cursor: pointer;
}
.btck-radios input:checked + span,
.btck-radios label:has(input:checked) {
  border-color: var(--btck-primary);
  background: var(--btck-primary-soft);
  color: var(--btck-primary-deep);
}
.btck-cta__submit {
  width: 100%;
  margin-top: 8px;
  padding: 18px;
  font-size: 17px;
}
.btck-cta__legal {
  margin-top: 14px;
  font-size: 12px;
  color: var(--btck-text-soft);
  line-height: 1.7;
}
.btck-cta__success {
  display: none;
  margin-top: 14px;
  padding: 14px 16px;
  border-radius: var(--btck-radius-sm);
  background: var(--btck-primary-soft);
  color: var(--btck-primary-deep);
  font-size: 14px;
  font-weight: 600;
}
.btck-cta__success.is-shown { display: block; }

/* =========================================================
   Sticky mobile CTA
   ========================================================= */
.btck-sticky-cta {
  position: fixed;
  left: 16px;
  right: 16px;
  bottom: 16px;
  z-index: 50;
  display: none;
  background: var(--btck-accent);
  color: #fff;
  font-weight: 700;
  padding: 16px;
  text-align: center;
  border-radius: var(--btck-radius-pill);
  box-shadow: 0 12px 28px rgba(255, 138, 101, 0.42);
}
@media (max-width: 768px) {
  .btck-sticky-cta { display: block; }
  .btck-page { padding-bottom: 80px; }
}