/* BRAIN Teams (Swell子テーマ) - Main Styles */
/* 親テーマ Swell のスタイルの後に読み込まれ、BRAIN Teamsデザインを適用 */

:root {
  --bt-blue: #0070f3;
  --bt-orange: #f59e0b;
  --bt-dark: #0b1836;
  --bt-gray: #878d9b;
  --bt-light-blue: #47bcfc;
  --font-figtree: 'Figtree', sans-serif;
  --font-noto: 'Noto Sans JP', sans-serif;
  --font-zen-kaku: 'Zen Kaku Gothic New', sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  background: #fff;
  color: var(--bt-dark);
  font-family: var(--font-noto);
  -webkit-font-smoothing: antialiased;
  margin: 0;
}

h1, h2, h3, h4 {
  font-family: var(--font-figtree);
  color: var(--bt-dark);
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Layout */
.container {
  width: 100%;
  max-width: 1280px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

@media (min-width: 768px) {
  .bt-hero .container,
  .bt-vision .container,
  .bt-business .container,
  .bt-topics .container,
  .bt-news .container,
  .bt-recruit .container,
  .bt-cta .container {
    padding-left: 3rem;
    padding-right: 3rem;
  }
}

/* Header */
.bt-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  padding-top: 1.5rem;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

.bt-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1280px;
  margin: 0 auto;
}

.bt-logo {
  display: flex;
  align-items: center;
  font-weight: 700;
  font-size: 1.75rem;
  letter-spacing: -0.05em;
  margin-left: -3rem;
  background: rgba(255,255,255,0.5);
  backdrop-filter: blur(12px);
  padding: 0.6rem 1.25rem;
  border-radius: 9999px;
  border: 1px solid rgba(255,255,255,0.2);
}

.bt-logo-blue { color: var(--bt-blue); }
.bt-logo-orange { color: var(--bt-orange); margin-left: 0.25rem; }

.bt-nav-desktop {
  display: none;
}

@media (min-width: 768px) {
  .bt-nav-desktop {
    display: flex;
    align-items: center;
    background: rgba(255,255,255,0.7);
    backdrop-filter: blur(24px);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 9999px;
    padding: 0.75rem 2rem;
    gap: 2rem;
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.05);
  }
}

.bt-nav-link,
.bt-nav-list li a {
  font-size: 0.8125rem;
  font-weight: 700;
  color: #475569;
  transition: color 0.2s;
}

.bt-nav-link:hover,
.bt-nav-list li a:hover {
  color: var(--bt-blue);
}

.bt-nav-list {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
  padding: 0;
  margin: 0;
}

.bt-nav-cta {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  background: var(--bt-light-blue);
  color: #fff !important;
  font-size: 0.8125rem;
  font-weight: 700;
  padding: 0.5rem 1.25rem;
  border-radius: 9999px;
  transition: background 0.2s;
}

.bt-nav-cta:hover {
  background: #1eaaf7;
}

/* Mobile menu */
.bt-menu-btn {
  display: flex;
  margin-right: -3rem;
  padding: 0.75rem;
  transform: translateX(-1.5rem);
  background: rgba(255,255,255,0.7);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 9999px;
  color: #475569;
  cursor: pointer;
}

@media (min-width: 768px) {
  .bt-menu-btn { display: none; }
}

/* Mobile Menu Overlay */
.bt-mobile-menu {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  min-height: 80vh;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(2rem);
  border-radius: 2.5rem;
  box-shadow: 0 25px 50px -12px rgba(0,0,0,0.25);
  padding: 8rem 3rem 3rem;
  z-index: 40;
  display: none;
  flex-direction: column;
  gap: 2rem;
}

.bt-mobile-close {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  padding: 0.75rem;
  background: rgba(241, 245, 249, 0.8);
  border: 1px solid #e2e8f0;
  border-radius: 9999px;
  color: #64748b;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s, color 0.2s;
}

.bt-mobile-close:hover {
  background: #e2e8f0;
  color: var(--bt-blue);
}

.bt-mobile-menu[aria-hidden="false"] {
  display: flex;
}

.bt-mobile-nav-list {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  list-style: none;
  padding: 0;
  margin: 0;
}

.bt-mobile-link,
.bt-mobile-nav-list li a {
  font-size: 1.25rem;
  font-weight: 700;
  color: #1e293b;
  transition: color 0.2s;
}

.bt-mobile-link:hover,
.bt-mobile-nav-list li a:hover {
  color: var(--bt-blue);
}

.bt-mobile-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bt-light-blue);
  color: #fff;
  font-weight: 700;
  padding: 1rem 1.5rem;
  border-radius: 1rem;
  margin-top: auto;
  transition: background 0.2s;
}

.bt-mobile-cta:hover {
  background: #1eaaf7;
  color: #fff;
}

/* Main content */
.bt-main {
  min-height: 100vh;
  padding-top: 4rem;
}

/* Footer */
.bt-footer {
  background: #f8fafc;
  border-top: 1px solid #e2e8f0;
}

.bt-footer-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 4rem 3rem;
}

.bt-footer-grid {
  display: grid;
  gap: 3rem;
}

@media (min-width: 768px) {
  .bt-footer-grid {
    grid-template-columns: 2fr 1fr 1fr;
  }
}

.bt-footer-logo {
  display: inline-flex;
  align-items: center;
  font-weight: 700;
  font-size: 1.75rem;
  letter-spacing: -0.05em;
  margin-bottom: 1.5rem;
}

.bt-footer-desc {
  color: #64748b;
  font-size: 0.875rem;
  max-width: 20rem;
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.bt-footer-copy {
  color: #94a3b8;
  font-size: 0.75rem;
}

.bt-footer-title {
  font-size: 0.75rem;
  font-weight: 700;
  color: #0f172a;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1.5rem;
}

.bt-footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.bt-footer-links li {
  margin-bottom: 1rem;
}

.bt-footer-links a {
  color: #64748b;
  font-size: 0.875rem;
  transition: color 0.2s;
}

.bt-footer-links a:hover {
  color: var(--bt-blue);
}

/* Buttons */
.bt-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 3rem;
  background: var(--bt-light-blue);
  color: #fff;
  font-weight: 700;
  border-radius: 9999px;
  border: none;
  cursor: pointer;
  transition: all 0.2s;
}

.bt-btn:hover {
  background: #1eaaf7;
}

/* Utility */
.bt-section { padding: 6rem 0; }
.bt-section-sm { padding: 4rem 0; }
.text-center { text-align: center; }

/* ========== Home Page ========== */
.bt-hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: #fafafa;
}

.bt-hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.bt-hero-svg {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.bt-hero-path {
  stroke-dasharray: 2000;
  stroke-dashoffset: 2000;
  animation: bt-draw 3s ease-in-out forwards;
}

.bt-hero-river { animation-delay: 0.5s; animation-fill-mode: forwards; }

@keyframes bt-draw {
  to { stroke-dashoffset: 0; }
}

.bt-hero-content { 
  position: relative; 
  z-index: 20; /* 流線よりも前面に配置 */
  pointer-events: none; /* 背後の流線へのマウス操作を邪魔しない */
}

.bt-hero-title {
  font-family: var(--font-zen-kaku);
  font-size: clamp(2.5rem, 6vw, 5.5rem);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: 0.02em;
  color: #0f172a;
  margin: 0 0 2.5rem;
  text-shadow: 0 0 20px rgba(255,255,255,0.8), 0 0 10px rgba(255,255,255,0.5); /* 文字の周りに光彩を入れて視認性を向上 */
}

.bt-hero-title-anim {
  opacity: 0;
  transform: translateY(30px);
  animation: bt-hero-fade-in 1s ease-out 1.5s forwards;
}

@keyframes bt-hero-fade-in {
  to { opacity: 1; transform: translateY(0); }
}

/* Floating Philosophy Message */
.bt-philosophy-float {
  position: fixed;
  pointer-events: none;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(8px);
  padding: 0.75rem 1.25rem;
  border-radius: 12px;
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.3);
  font-family: var(--font-noto);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--bt-dark);
  opacity: 0;
  transform: translate(-50%, -120%) scale(0.95);
  transition: opacity 0.4s cubic-bezier(0.16, 1, 0.3, 1), transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  white-space: nowrap;
  width: auto; /* 横幅を自動（文字に合わせる）に設定 */
  display: inline-block; /* インラインブロックで文字幅にフィットさせる */
}

.bt-philosophy-float.is-active {
  opacity: 1;
  transform: translate(-50%, -140%) scale(1);
}

.bt-philosophy-float::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 50%;
  transform: translateX(-50%);
  border-left: 6px solid transparent;
  border-right: 6px solid transparent;
  border-top: 6px solid rgba(255, 255, 255, 0.85);
}

.bt-hero-path {
  cursor: pointer;
  transition: stroke-width 0.3s ease, filter 0.3s ease;
}

.bt-hero-path:hover {
  filter: brightness(1.1);
}

.bt-scroll-indicator {
  position: absolute;
  bottom: 8rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.4em;
  color: #94a3b8;
  text-transform: uppercase;
  cursor: pointer;
}

.bt-scroll-indicator:hover { color: var(--bt-blue); }

.bt-scroll-text {
  animation: bt-scroll-pulse 2s ease-in-out infinite;
}

@keyframes bt-scroll-pulse {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 1; }
}

.bt-scroll-bar {
  width: 1px;
  height: 3rem;
  background: #e2e8f0;
  overflow: hidden;
  position: relative;
}

.bt-scroll-bar-inner {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 50%;
  background: var(--bt-light-blue);
  animation: bt-scroll-bar-move 1.5s ease-in-out infinite;
}

@keyframes bt-scroll-bar-move {
  0% { transform: translateY(-100%); }
  100% { transform: translateY(200%); }
}

/* Vision */
.bt-vision { border-top: 1px solid #f1f5f9; }

.bt-vision-grid {
  display: grid;
  gap: 3rem;
  max-width: 80rem;
  margin: 0 auto;
}

@media (min-width: 768px) {
  .bt-vision-grid { grid-template-columns: 5fr 5fr; grid-template-rows: auto; gap: 3rem; }
  .bt-vision-body { grid-column: 2; }
}

.bt-vision-headline {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 700;
  line-height: 1.2;
  margin: 0;
}

.bt-vision-text {
  font-size: 1.125rem;
  color: #64748b;
  line-height: 1.7;
  margin: 0 0 2rem;
}

/* Section header */
.bt-section-label {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--bt-blue);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.5rem;
  display: block;
}

.bt-section-title {
  font-size: 3rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: #0f172a;
  margin: 0;
}

.bt-section-sub {
  display: block;
  margin-top: 0.25rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: #94a3b8;
}

.bt-section-header { margin-bottom: 4rem; }
.bt-section-header-flex { display: flex; justify-content: space-between; align-items: flex-end; }
.bt-section-header-flex .bt-section-title { margin-bottom: 0; }

/* Business */
.bt-business { background: #f8fafc; }

.bt-business-list { max-width: 72rem; margin: 0 auto; }
.bt-business-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3rem;
  background: #fff;
  border-radius: 1rem;
  padding: 2rem;
  margin-bottom: 1.5rem;
  border: 1px solid #f1f5f9;
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

@media (min-width: 768px) {
  .bt-business-card { flex-direction: row; padding: 3rem; }
  .bt-business-img { width: 33%; }
}

.bt-business-img {
  aspect-ratio: 16/9;
  border-radius: 0.75rem;
  overflow: hidden;
  background: #f1f5f9;
}

.bt-business-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.bt-business-title-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.bt-business-title-row h3 {
  font-size: 1.875rem;
  margin: 0;
}

.bt-business-arrow {
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  background: #38bdf8;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.bt-business-card:hover .bt-business-img img {
  transform: scale(1.05);
}

.bt-business-img img {
  transition: transform 0.7s ease;
}

.bt-business-content p {
  color: #64748b;
  font-size: 1.125rem;
  line-height: 1.7;
  margin: 0;
}

.bt-business-cta { margin-top: 3rem; display: flex; justify-content: flex-end; }

/* Trusted by */
.bt-trusted {
  margin-top: 8rem;
  background: #0f172a;
  border-radius: 3rem;
  padding: 3.5rem 0;
  overflow: hidden;
  position: relative;
}
.bt-trusted-header {
  text-align: center;
  margin-bottom: 2.5rem;
  padding: 0 4rem;
}
.bt-trusted-label {
  font-size: 0.7rem;
  font-weight: 700;
  color: rgba(255,255,255,0.3);
  text-transform: uppercase;
  letter-spacing: 0.5em;
  margin: 0;
}
.bt-trusted-logos-wrap {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  padding: 0 3rem;
  max-width: 1000px;
  margin: 0 auto;
}
.bt-trusted-item {
  height: 3.5rem;
  border-radius: 0.875rem;
  display: flex;
  align-items: center;
  justify-content: center;
  white-space: nowrap;
  width: 100%;
}
.bt-trusted-item-real {
  padding: 0 1.5rem;
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.12);
  color: rgba(255,255,255,0.75);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  transition: background 0.25s, border-color 0.25s, color 0.25s;
}
.bt-trusted-item-real:hover {
  background: rgba(255,255,255,0.13);
  border-color: rgba(255,255,255,0.22);
  color: #fff;
}
.bt-trusted-item-ph {
  background: rgba(255,255,255,0.03);
  border: 1px dashed rgba(255,255,255,0.1);
  color: rgba(255,255,255,0.2);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
/* 不要なクラスを削除 */
.bt-trusted-item-ph-sm, .bt-trusted-item-ph-md, .bt-trusted-item-ph-lg { display: none; }

/* Topics */
.bt-topics { position: relative; overflow: hidden; }
.bt-topics-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  opacity: 0.4;
  pointer-events: none;
}
.bt-topics-bg::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 600px;
  height: 600px;
  background: #bae6fd;
  border-radius: 50%;
  filter: blur(120px);
  transform: translate(-50%, -50%);
}
.bt-topics-bg::after {
  content: '';
  position: absolute;
  bottom: 0;
  right: 0;
  width: 600px;
  height: 600px;
  background: #fef3c7;
  border-radius: 50%;
  filter: blur(120px);
  transform: translate(50%, 50%);
}

.bt-topics-nav {
  display: flex;
  gap: 1rem;
}
.bt-topics-nav-btn {
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
  border: 1px solid #e2e8f0;
  background: #fff;
  color: var(--bt-light-blue);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}
.bt-topics-nav-btn:hover {
  background: var(--bt-light-blue);
  color: #fff;
}

.bt-topics-grid {
  display: grid;
  gap: 2rem;
  position: relative;
}

@media (min-width: 768px) { .bt-topics-grid { grid-template-columns: repeat(3, 1fr); } }

.bt-topic-card {
  background: #fff;
  border-radius: 1.5rem;
  overflow: hidden;
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
  transition: box-shadow 0.3s;
}

.bt-topic-card:hover { box-shadow: 0 20px 25px -5px rgba(0,0,0,0.1); }
.bt-topic-card:hover .bt-topic-img-thumb,
.bt-topic-card:hover .bt-topic-img-placeholder { transform: scale(1.05); }

.bt-topic-img-wrap {
  position: relative;
  aspect-ratio: 16/10;
  overflow: hidden;
}

.bt-topic-img,
.bt-topic-img-thumb {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.7s ease;
  display: block;
}

.bt-topic-img {
  background: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%);
}

.bt-topic-meta {
  position: absolute;
  top: 1rem;
  left: 1rem;
  background: rgba(255,255,255,0.9);
  backdrop-filter: blur(4px);
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  font-size: 10px;
  font-weight: 700;
  color: #94a3b8;
  z-index: 1;
}

.bt-topic-card { position: relative; }
.bt-topic-card h4 {
  padding: 2rem;
  font-size: 1.25rem;
  margin: 0;
  line-height: 1.4;
}

.bt-topic-card:hover h4 { color: var(--bt-blue); }

/* News */
.bt-news { background: #f8fafc; }
.bt-news-narrow { max-width: 64rem; }

.bt-news-list { display: flex; flex-direction: column; gap: 1rem; }

.bt-news-item {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.5rem 2rem;
  background: #fff;
  border-radius: 1rem;
  border: 1px solid #f1f5f9;
  transition: box-shadow 0.2s;
}

.bt-news-item:hover { box-shadow: 0 4px 6px -1px rgba(0,0,0,0.05); }
.bt-news-item:hover .bt-news-arrow { transform: scale(1.1); }

.bt-news-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.bt-news-meta time {
  font-size: 0.75rem;
  font-weight: 700;
  color: #cbd5e1;
  letter-spacing: 0.1em;
}

.bt-news-tag {
  font-size: 10px;
  font-weight: 700;
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  text-transform: uppercase;
}
.bt-news-tag-press { background: #f0f9ff; color: var(--bt-blue); }
.bt-news-tag-info { background: #f8fafc; color: #94a3b8; }

.bt-news-title { font-size: 1.125rem; font-weight: 700; flex: 1; }
.bt-news-item:hover .bt-news-title { color: var(--bt-blue); }

.bt-news-arrow {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  background: #38bdf8;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: transform 0.3s;
}

.bt-news-cta { margin-top: 3rem; display: flex; justify-content: flex-end; }

/* Recruit */
.bt-recruit {
  background: #f0f7ff;
  border-radius: 4rem;
  margin: 0 1.5rem;
  border: 1px solid #e0f2fe;
  overflow: hidden;
}

.bt-recruit-grid {
  display: grid;
  gap: 3rem;
  align-items: center;
}

@media (min-width: 768px) { .bt-recruit-grid { grid-template-columns: 1fr 1fr; } }

.bt-recruit-title {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.02em;
  margin: 0 0 3rem;
}

.bt-recruit-text {
  color: #475569;
  font-size: 1.125rem;
  line-height: 1.7;
  margin: 0 0 3rem;
}

.bt-recruit-photos {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.bt-recruit-photos img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 1rem;
}

.bt-recruit-photos > div:nth-child(1) { aspect-ratio: 3/4; }
.bt-recruit-photos > div:nth-child(2) { aspect-ratio: 1; }
.bt-recruit-photos > div:nth-child(3) { aspect-ratio: 1; padding-top: 3rem; }
.bt-recruit-photos > div:nth-child(4) { aspect-ratio: 3/4; padding-top: 3rem; }

/* CTA */
.bt-cta { padding: 10rem 0; }
.bt-cta-title {
  font-size: clamp(3rem, 6vw, 4.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin: 0 0 2rem;
}

.bt-cta-accent { color: var(--bt-blue); font-weight: 300; }
.bt-cta-desc { font-size: 0.9375rem; color: #64748b; margin: 0 0 4rem; max-width: 32rem; margin-left: auto; margin-right: auto; }
.bt-btn-lg { padding: 1.5rem 4rem; font-size: 1.25rem; }

/* Services page - alternating layout */
.bt-services-list { display: flex; flex-direction: column; gap: 8rem; }
.bt-service-item {
  display: flex;
  flex-direction: column;
  gap: 4rem;
  align-items: center;
}
@media (min-width: 768px) {
  .bt-service-item {
    flex-direction: row;
    gap: 4rem;
    align-items: center;
  }
  .bt-service-reverse { flex-direction: row-reverse; }
  .bt-service-img { width: 50%; }
  .bt-service-content { width: 50%; }
}
.bt-service-img {
  aspect-ratio: 16/9;
  border-radius: 3rem;
  overflow: hidden;
  background: #f1f5f9;
}
.bt-service-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.bt-service-num {
  font-size: 3rem;
  font-weight: 700;
  color: #e0f2fe;
  display: block;
  margin-bottom: 2rem;
}
.bt-service-title { font-size: 1.875rem; margin: 0 0 2rem; }
.bt-service-desc {
  font-size: 1.125rem;
  color: #64748b;
  line-height: 1.7;
  margin: 0 0 2rem;
}
.bt-service-features {
  list-style: none;
  padding: 0;
  margin: 0;
}
.bt-service-features li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: #475569;
  font-weight: 500;
  margin-bottom: 1rem;
}
.bt-service-dot {
  width: 6px;
  height: 6px;
  background: #38bdf8;
  border-radius: 50%;
  flex-shrink: 0;
}

/* Page templates */
.bt-page { padding-top: 6rem; padding-bottom: 6rem; }
.bt-page-title { font-size: clamp(2rem, 4vw, 3.75rem); font-weight: 700; margin: 0 0 3rem; }
.bt-prose p { margin: 0 0 1rem; color: #475569; line-height: 1.7; }
.bt-prose h2 { font-size: 1.25rem; margin: 2rem 0 1rem; }
.bt-prose h3 { font-size: 1rem; margin: 1.5rem 0 0.5rem; }
.bt-prose ul { padding-left: 1.5rem; margin: 0 0 1rem; }

/* Breadcrumbs */
.bt-breadcrumbs {
  padding: 1rem 0;
  background: #f8fafc;
  border-bottom: 1px solid #e2e8f0;
  margin-top: 5rem; /* Header height offset */
}

.bt-breadcrumbs-list {
  display: flex;
  flex-wrap: wrap;
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: 0.75rem;
  color: #64748b;
}

.bt-breadcrumbs-list li {
  display: flex;
  align-items: center;
}

.bt-breadcrumbs-list li:not(:last-child)::after {
  content: '/';
  margin: 0 0.75rem;
  color: #cbd5e1;
}

.bt-breadcrumbs-list a {
  color: #64748b;
  transition: color 0.2s;
}

.bt-breadcrumbs-list a:hover {
  color: var(--bt-blue);
}

.bt-breadcrumbs-list li[aria-current="page"] {
  color: var(--bt-blue);
  font-weight: 700;
}

@media (max-width: 767px) {
  .bt-breadcrumbs { margin-top: 4rem; }
}