/* ============================================================
   style.css — Concert Light Stick Custom
   本地静态样式（提取自内联 <style>）+ 正文字体放大两号
   ============================================================ */

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', sans-serif;
  font-size: 1.2rem;     /* 19.2px（原 1.05rem ≈ 16.8px，放大两号） */
  background: #000;
  color: #fff;
  overflow-x: hidden;
  line-height: 1.6;
}
h1, h2, h3, h4 { font-family: 'Space Grotesk', sans-serif; }

/* ---- Text Gradient ---- */
.gr {
  background: linear-gradient(135deg, #6366f1, #06b6d4);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ---- Section ---- */
section { position: relative; }

/* ---- Scroll Reveal ---- */
.rv {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease-out;
}
.rv.show { opacity: 1; transform: translateY(0); }

/* ---- Card ---- */
.cd {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 16px;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

/* ---- Border Base ---- */
.bdr { border: 1px solid rgba(255, 255, 255, 0.06); }

/* ---- Separator ---- */
.sep {
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(99,102,241,0.2), rgba(6,182,212,0.2), transparent);
  margin: 0 auto;
}

/* ===== NAVIGATION ===== */

.nav-wrap {
  position: fixed;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 999;
  width: calc(100% - 32px);
  max-width: 1200px;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 24px;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 60px;
}

.nav-links {
  display: flex;
  gap: 20px;
  align-items: center;
}

.nav-links a {
  color: rgba(255, 255, 255, 0.65);
  text-decoration: none;
  font-size: 0.88rem;    /* 14px（原 0.82rem，放大两号） */
  font-weight: 500;
  transition: color 0.2s;
}

.nav-links a:hover { color: #fff; }

.nav-cta {
  background: #6366f1;
  color: #fff !important;
  padding: 6px 18px;
  border-radius: 30px;
  font-size: 0.86rem !important;  /* ~13.8px（原 0.8rem） */
}

.nav-cta:hover { background: #4f46e5 !important; }

/* ===== HERO ===== */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: url('/images/concert-light-stick-custom-hero.jpg') center/cover no-repeat;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(0,0,0,0.92) 25%, rgba(0,0,0,0.3) 60%, rgba(0,0,0,0.1) 100%);
}

.hero-right {
  position: absolute;
  right: 0;
  top: 0;
  width: 45%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-right img {
  max-width: 90%;
  max-height: 80%;
  object-fit: contain;
  animation: float 6s ease-in-out infinite;
  filter: drop-shadow(0 0 60px rgba(99, 102, 241, 0.2));
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-15px); }
}

/* ===== STATS INLINE ===== */

.stats-inline {
  display: flex;
  flex-wrap: wrap;
  gap: 24px 40px;
  margin-top: 30px;
}

.stats-inline > div {
  display: flex;
  align-items: center;
  gap: 10px;
}

.stats-inline .num {
  font-size: 1.6rem;
  font-weight: 800;
  font-family: 'Space Grotesk', sans-serif;
  background: linear-gradient(135deg, #6366f1, #06b6d4);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.stats-inline .lbl {
  font-size: 0.86rem;    /* ~13.8px（原 0.78rem） */
  color: #64748b;
}

/* ===== BADGE PILL ===== */

.badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  border-radius: 40px;
  background: rgba(99, 102, 241, 0.08);
  border: 1px solid rgba(99, 102, 241, 0.15);
  font-size: 0.86rem;    /* ~13.8px（原 0.78rem） */
  color: #a5b4fc;
  margin-bottom: 24px;
}

.badge-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #6366f1;
  box-shadow: 0 0 10px #6366f1;
  display: inline-block;
}

/* ===== TEAM CARDS ===== */

.team-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.team-card {
  padding: 24px 16px;
  border-radius: 14px;
  text-align: center;
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.team-card .emoji { font-size: 2rem; margin-bottom: 8px; }

.team-card h4 {
  font-size: 1rem;       /* 16px（原 0.95rem） */
  font-weight: 700;
  margin-bottom: 4px;
}

.team-card p {
  font-size: 0.86rem;    /* ~13.8px（原 0.78rem） */
  color: #64748b;
}

/* ===== PRODUCT 2x2 GRID ===== */

.p-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.p-card {
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  min-height: 240px;
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.p-card .bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
}

.p-card .ov {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(0,0,0,0.85) 100%);
}

.p-card .ct {
  position: relative;
  z-index: 2;
  padding: 20px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  height: 100%;
  min-height: 240px;
}

.p-card .ct .tag {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 0.72rem;   /* ~11.5px（原 0.65rem） */
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 8px;
  width: fit-content;
}

.p-card .ct .tag.t1 { background: rgba(99,102,241,0.2); color: #a5b4fc; }
.p-card .ct .tag.t2 { background: rgba(6,182,212,0.2); color: #22d3ee; }
.p-card .ct .tag.t3 { background: rgba(168,85,247,0.2); color: #c084fc; }
.p-card .ct .tag.t4 { background: rgba(251,191,36,0.2); color: #fbbf24; }

.p-card .ct h3 {
  font-size: 1.2rem;    /* 19.2px（原 1.15rem） */
  font-weight: 700;
  margin-bottom: 4px;
}

.p-card .ct p {
  font-size: 0.9rem;    /* ~14.4px（原 0.82rem） */
  color: #94a3b8;
  line-height: 1.5;
}

/* ===== MATERIAL GRID ===== */

.mat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.mat-item {
  padding: 16px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid rgba(255, 255, 255, 0.05);
  text-align: center;
}

.mat-item .m-icon { font-size: 1.4rem; margin-bottom: 6px; }

.mat-item h4 {
  font-size: 0.9rem;    /* ~14.4px（原 0.85rem） */
  font-weight: 600;
  margin-bottom: 3px;
}

.mat-item p {
  font-size: 0.8rem;    /* ~12.8px（原 0.72rem） */
  color: #64748b;
}

/* ===== STEP WORKFLOW ===== */

.step-flow {
  display: flex;
  gap: 0;
  position: relative;
}

.step-flow .step-item {
  flex: 1;
  text-align: center;
  padding: 0 16px;
  position: relative;
}

.step-flow .step-item:not(:last-child)::after {
  content: '';
  position: absolute;
  top: 28px;
  right: -8px;
  width: 16px;
  height: 2px;
  background: linear-gradient(90deg, #6366f1, #06b6d4);
}

.step-num-circ {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 14px;
  font-size: 1.1rem;
  font-weight: 700;
  font-family: 'Space Grotesk', sans-serif;
  position: relative;
}

.step-num-circ.s1 { background: rgba(99,102,241,0.15); color: #818cf8; }
.step-num-circ.s2 { background: rgba(6,182,212,0.12); color: #22d3ee; }
.step-num-circ.s3 { background: rgba(99,102,241,0.1); color: #a5b4fc; }

.step-item h3 {
  font-size: 1.05rem;   /* ~16.8px（原 1rem） */
  font-weight: 700;
  margin-bottom: 6px;
}

.step-item p {
  font-size: 0.92rem;   /* ~14.7px（原 0.85rem） */
  color: #64748b;
  line-height: 1.55;
}

/* ===== DIFFERENTIATOR ===== */

.diff-item {
  padding: 24px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.05);
  display: flex;
  gap: 18px;
  align-items: flex-start;
}

.diff-item .d-icon {
  width: 44px;
  height: 44px;
  min-width: 44px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.diff-item .d-icon.d1 { background: rgba(99,102,241,0.1); color: #818cf8; }
.diff-item .d-icon.d2 { background: rgba(6,182,212,0.1); color: #22d3ee; }
.diff-item .d-icon.d3 { background: rgba(168,85,247,0.1); color: #c084fc; }
.diff-item .d-icon.d4 { background: rgba(251,191,36,0.1); color: #fbbf24; }
.diff-item .d-icon.d5 { background: rgba(239,68,68,0.1); color: #f87171; }

.diff-item h4 {
  font-size: 1.05rem;   /* ~16.8px（原 1rem） */
  font-weight: 700;
  margin-bottom: 4px;
}

.diff-item p {
  font-size: 0.9rem;    /* ~14.4px（原 0.82rem） */
  color: #94a3b8;
  line-height: 1.55;
}

/* ===== FAQ 2-COL ===== */

.faq-2col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.faq-2col-item {
  padding: 20px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.05);
  cursor: pointer;
  transition: border-color 0.3s;
}

.faq-2col-item:hover { border-color: rgba(99, 102, 241, 0.2); }

.faq-2col-item .q {
  font-size: 0.95rem;   /* ~15.2px（原 0.9rem） */
  font-weight: 600;
  margin-bottom: 6px;
  padding-right: 24px;
  position: relative;
}

.faq-2col-item .q::after {
  content: '+';
  position: absolute;
  right: 0;
  top: 0;
  color: #6366f1;
  font-size: 1.1rem;
  font-weight: 400;
}

.faq-2col-item.open .q::after { content: '\2212'; }

.faq-2col-item .a {
  font-size: 0.9rem;    /* ~14.4px（原 0.82rem） */
  color: #64748b;
  line-height: 1.6;
  display: none;
  margin-top: 8px;
}

.faq-2col-item.open .a { display: block; }

/* ===== RESPONSIVE ===== */

@media (max-width: 1024px) {
  .hero-right { width: 35%; }
  .step-flow { flex-direction: column; gap: 20px; }
  .step-flow .step-item:not(:last-child)::after { display: none; }
  .faq-2col { grid-template-columns: 1fr; }
  .team-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 768px) {
  .hero-right { display: none; }
  .nav-inner { padding: 8px 14px; }
  .nav-links { display: none; }
  .nav-links.show {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.95);
    padding: 16px;
    border-radius: 16px;
    margin-top: 8px;
    gap: 12px;
  }
  .step-flow { flex-direction: column; gap: 16px; }
  .p-grid { grid-template-columns: 1fr; }
  .mat-grid { grid-template-columns: 1fr 1fr; }
  .team-grid { grid-template-columns: 1fr; }
  .stats-inline { gap: 16px 24px; }
}

@media (max-width: 480px) {
  .mat-grid { grid-template-columns: 1fr; }
}

/* ===== HAMBURGER ===== */

.hamburger {
  display: none;
  flex-direction: column;
  gap: 4px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}

.hamburger span {
  width: 22px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: 0.3s;
}

@media (max-width: 768px) {
  .hamburger { display: flex; }
}