/* ============================================
   DunCrew Landing Page - Home Page Styles
   Specific to index.html (一起用用)
   ============================================ */

/* ---- Hero ---- */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;padding-top:5rem;overflow:hidden}
.hero::before{content:'';position:absolute;inset:0;
  background:radial-gradient(ellipse 80% 50% at 50% 0%,rgba(94,186,174,0.08) 0%,transparent 70%)}
.hero-title-row{display:flex;align-items:center;gap:1.5rem;margin-bottom:1.25rem}
.hero-title-img{width:120px;height:auto;flex-shrink:0;mix-blend-mode:multiply;
  animation:floatA 6s ease-in-out infinite;
  filter:drop-shadow(0 4px 16px rgba(94,186,174,0.12))}
.hero-bg-img{position:absolute;bottom:-5%;right:-8%;width:52%;max-width:640px;opacity:.18;
  border-radius:var(--radius-2xl);pointer-events:none;animation:floatA 8s ease-in-out infinite;
  mask-image:linear-gradient(to left,rgba(0,0,0,.5),transparent 80%);
  -webkit-mask-image:linear-gradient(to left,rgba(0,0,0,.5),transparent 80%)}
.hero-content{position:relative;z-index:2;max-width:600px}
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:.4rem 1rem;
  background:var(--teal-glow);border:1px solid rgba(94,186,174,0.2);border-radius:var(--radius-full);
  font-size:.75rem;color:var(--teal);margin-bottom:1.75rem;font-weight:500}
.hero-badge-dot{width:7px;height:7px;border-radius:50%;background:var(--teal);animation:breathe 2.5s ease-in-out infinite}
.hero h1{font-size:3.5rem;font-weight:800;line-height:1.18;letter-spacing:-0.03em;margin-bottom:1.25rem}
.hero-desc{font-size:1.125rem;color:var(--text-secondary);line-height:1.75;margin-bottom:2.5rem;max-width:500px}
.hero-actions{display:flex;align-items:center;gap:1rem;flex-wrap:wrap}
.hero-stats{display:flex;gap:2.5rem;margin-top:3rem;padding-top:1.5rem;border-top:1px solid var(--border-subtle)}
.stat-val{font-size:1.5rem;font-weight:700}
.stat-lbl{font-size:.75rem;color:var(--text-muted);margin-top:2px}

/* ---- Features ---- */
.features{padding:7rem 0;position:relative}

/* ---- Flip Cards ---- */
.flip-card{perspective:800px;cursor:pointer;min-height:220px}
.flip-inner{position:relative;width:100%;height:100%;min-height:220px;
  transition:transform .6s var(--ease);transform-style:preserve-3d}
.flip-card.flipped .flip-inner{transform:rotateY(180deg)}
.flip-front,.flip-back{position:absolute;inset:0;backface-visibility:hidden;
  -webkit-backface-visibility:hidden;border-radius:var(--radius-xl)}
.flip-front{z-index:2}
.flip-back{transform:rotateY(180deg);overflow:hidden;display:flex;align-items:center;
  justify-content:center;padding:.75rem}
.flip-back img{width:100%;height:100%;object-fit:cover;border-radius:var(--radius-md)}
.flip-hint{display:block;margin-top:auto;padding-top:.75rem;font-size:.75rem;
  color:var(--text-muted);opacity:.6;transition:opacity .2s var(--ease)}
.flip-card:hover .flip-hint{opacity:1;color:var(--teal)}

/* ---- Product Preview ---- */
.product{padding:7rem 0;text-align:center;position:relative}
.prod-win{margin-top:3rem;border-radius:var(--radius-2xl);border:1px solid var(--border-subtle);
  overflow:hidden;box-shadow:0 16px 48px rgba(60,50,40,0.08);background:var(--bg-panel)}
.prod-bar{display:flex;align-items:center;gap:8px;padding:14px 18px;background:var(--bg-secondary);
  border-bottom:1px solid var(--border-subtle)}
.wd{width:12px;height:12px;border-radius:50%}
.wd.r{background:#f47068}.wd.y{background:#e8a838}.wd.g{background:#6cb478}
.prod-body{position:relative;overflow:hidden;min-height:300px;background:#1a1a2e}

/* Carousel */
.carousel{position:relative;width:100%;overflow:hidden}
.carousel-track{display:flex;transition:transform .6s var(--ease);will-change:transform}
.carousel-slide{min-width:100%;position:relative}
.carousel-slide img{width:100%;display:block;object-fit:cover}
.carousel-caption{position:absolute;bottom:0;left:0;right:0;
  padding:2.5rem 3rem 2rem;text-align:left;
  background:linear-gradient(to top,rgba(26,26,46,0.92) 0%,rgba(26,26,46,0.6) 60%,transparent 100%)}
.carousel-caption h3{font-size:1.25rem;font-weight:700;color:#fff;margin-bottom:.4rem;
  display:flex;align-items:center;gap:.6rem}
.carousel-caption h3 .cap-tag{font-size:.625rem;padding:.15rem .5rem;border-radius:var(--radius-full);
  background:rgba(94,186,174,0.2);color:var(--teal-light);font-weight:600;letter-spacing:.05em;
  text-transform:uppercase}
.carousel-caption p{font-size:.9rem;color:rgba(255,255,255,0.72);line-height:1.65;max-width:560px}

/* Carousel controls */
.carousel-dots{display:flex;align-items:center;justify-content:center;gap:.5rem;
  padding:.875rem 0;background:var(--bg-secondary);border-top:1px solid var(--border-subtle)}
.carousel-dot{width:8px;height:8px;border-radius:50%;border:none;cursor:pointer;
  background:var(--border-medium);transition:all .3s var(--ease);padding:0}
.carousel-dot.active{background:var(--teal);width:24px;border-radius:4px}
.carousel-dot:hover{background:var(--teal-light)}
.carousel-nav{position:absolute;top:50%;transform:translateY(-50%);z-index:5;
  width:40px;height:40px;border-radius:50%;border:none;cursor:pointer;
  background:rgba(255,255,255,0.12);backdrop-filter:blur(8px);color:#fff;
  display:flex;align-items:center;justify-content:center;
  transition:all .2s var(--ease);font-size:1.125rem}
.carousel-nav:hover{background:rgba(255,255,255,0.22)}
.carousel-nav.prev{left:1rem}
.carousel-nav.next{right:1rem}

/* ---- Models ---- */
.models{padding:7rem 0;background:var(--bg-secondary);position:relative}
.models-wrap{overflow:hidden;margin-top:2rem;
  mask-image:linear-gradient(90deg,transparent 0%,#000 8%,#000 92%,transparent 100%);
  -webkit-mask-image:linear-gradient(90deg,transparent 0%,#000 8%,#000 92%,transparent 100%)}
.models-track{display:flex;gap:1rem;animation:slideSeq 35s linear infinite;width:max-content}
.m-chip{display:inline-flex;align-items:center;gap:.6rem;padding:.55rem 1.2rem;
  background:var(--bg-panel);border:1px solid var(--border-subtle);border-radius:var(--radius-full);
  font-size:.875rem;color:var(--text-secondary);white-space:nowrap;flex-shrink:0;font-weight:500}

/* ---- CTA ---- */
.cta{padding:7rem 0;position:relative}
.cta-card{padding:3.5rem;text-align:center;position:relative;overflow:hidden}
.cta-card::before{content:'';position:absolute;top:-40%;left:50%;transform:translateX(-50%);
  width:500px;height:500px;border-radius:50%;
  background:radial-gradient(circle,rgba(94,186,174,0.06) 0%,transparent 70%);pointer-events:none}
.cta h2{font-size:2rem;font-weight:700;margin-bottom:.875rem;position:relative}
.cta p{font-size:1rem;color:var(--text-secondary);margin-bottom:2.5rem;position:relative}
.cta .btn-p{position:relative}
.cta-meta{margin-top:1.5rem;display:flex;align-items:center;justify-content:center;
  gap:1.5rem;font-size:.75rem;color:var(--text-muted);position:relative}
.cta-meta span{display:flex;align-items:center;gap:5px}
.cta-meta-dot{width:5px;height:5px;border-radius:50%;background:var(--teal);opacity:.5}

/* ---- Responsive (home-specific) ---- */
@media(max-width:768px){
  .hero h1{font-size:2rem}
  .hero-stats{gap:1.25rem}
  .hero-bg-img{display:none}
  .hero-title-img{width:80px}
  .cta-card{padding:2rem 1.25rem}
}
@media(max-width:480px){
  .hero h1{font-size:1.5rem}
  .hero-title-row{gap:1rem}
  .hero-title-img{width:60px}
  .hero-actions{flex-direction:column;align-items:flex-start}
}