:root {
  /* ══════ 明亮蓝紫色系 ══════ */
  --bg-deep:    #1A1A45;
  --bg:         #222268;
  --bg-raised:  #3636A0;
  --bg-glass:   rgba(34, 34, 104, 0.55);
  --bg-glass-hv: rgba(50, 50, 140, 0.7);

  /* ══════ 强调色 ══════ */
  --accent-1:   #7C3AED;  /* 紫罗兰 */
  --accent-2:   #06B6D4;  /* 青色 */
  --accent-3:   #EC4899;  /* 粉色 */
  --accent-4:   #6366F1;  /* 靛蓝 */

  /* ══════ 渐变 ══════ */
  --gradient:       linear-gradient(135deg, #7C3AED, #6366F1, #06B6D4);
  --gradient-r:     linear-gradient(135deg, #06B6D4, #7C3AED);
  --gradient-warm:  linear-gradient(135deg, #EC4899, #7C3AED, #6366F1);
  --gradient-cool:  linear-gradient(135deg, #06B6D4, #3B82F6, #6366F1);

  /* ══════ 文字 ══════ */
  --t-heading:  #F8F8FF;
  --t-body:     #C0C0E0;
  --t-muted:    #7878A8;

  /* ══════ 边框/阴影 ══════ */
  --border:      rgba(255,255,255,0.06);
  --border-hl:   rgba(124,58,237,0.25);
  --shadow-card: 0 1px 2px rgba(0,0,0,0.3), 0 8px 32px rgba(0,0,0,0.4), 0 0 0 1px rgba(255,255,255,0.03);
  --shadow-hover: 0 4px 8px rgba(0,0,0,0.4), 0 16px 48px rgba(0,0,0,0.5), 0 0 0 1px rgba(124,58,237,0.2), 0 0 80px rgba(124,58,237,0.06);
  --shadow-lg:  0 0 0 1px rgba(255,255,255,0.04), 0 8px 32px rgba(0,0,0,0.5);

  /* ══════ 圆角 ══════ */
  --r-sm: 8px;
  --r-md: 14px;
  --r-lg: 22px;
  --r-xl: 28px;

  /* ══════ 缓动 ══════ */
  --ease-out:   cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);

  /* ══════ 字体 ══════ */
  --font-display: 'Syne', system-ui, sans-serif;
  --font-body: 'Manrope', system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

/* ========== RESET ========== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{
  scroll-behavior:smooth;
  background:var(--bg-deep);
  color:var(--t-heading);
}
body{
  font-family:var(--font-body);
  -webkit-font-smoothing:antialiased;
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(124,58,237,.18) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 20% 100%, rgba(6,182,212,.1) 0%, transparent 60%),
    radial-gradient(ellipse 50% 50% at 80% 70%, rgba(236,72,153,.1) 0%, transparent 60%),
    var(--bg-deep);
  min-height:100vh;
  overflow-x:hidden;
}
::selection{background:rgba(124,58,237,.4);color:#fff}

/* ========== UTILITY ========== */
.font-display{font-family:var(--font-display)}
.text-accent-1{color:var(--accent-1)}
.text-accent-2{color:var(--accent-2)}
.text-gradient{
  background:var(--gradient);
  background-size:200% auto;
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  background-clip:text;
  animation:gradientShift 6s ease infinite;
}
@keyframes gradientShift{
  0%,100%{background-position:0% center}
  50%{background-position:100% center}
}

/* ========== SCROLL PROGRESS ========== */
.scroll-progress{
  position:fixed;top:0;left:0;height:3px;
  background:var(--gradient);
  z-index:100;width:0;
  box-shadow:0 0 12px rgba(124,58,237,.6),0 0 24px rgba(124,58,237,.3);
  transition:width .1s linear;
}

/* ========== HEADER ========== */
header{
  background:rgba(26,26,69,.7);
  backdrop-filter:blur(28px) saturate(200%);
  -webkit-backdrop-filter:blur(28px) saturate(200%);
  border-bottom:1px solid var(--border);
}
header .nav-link{
  font-family:var(--font-display);
  font-size:.6875rem;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--t-muted);
  text-decoration:none;
  padding:8px 16px;
  border-radius:20px;
  border:1px solid transparent;
  transition:all .3s ease;
}
header .nav-link:hover{
  color:var(--accent-2);
  border-color:rgba(6,182,212,.2);
  background:rgba(6,182,212,.06);
}

/* ========== HERO ========== */
#hero{position:relative;min-height:100vh;display:flex;align-items:center;padding:0 2rem}

.hero-grid{
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:4rem;
  align-items:center;
  width:100%;
  max-width:1280px;
  margin:0 auto;
}

.hero-badge{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-display);
  font-size:.6875rem;
  letter-spacing:.28em;
  color:var(--accent-2);
  text-transform:uppercase;
  margin-bottom:2.5rem;
  padding:6px 18px;
  border-radius:25px;
  border:1px solid rgba(6,182,212,.2);
  background:rgba(6,182,212,.06);
  backdrop-filter:blur(8px);
}
.hero-badge::after{
  content:'';
  width:6px;height:6px;
  border-radius:50%;
  background:var(--accent-2);
  box-shadow:0 0 8px rgba(6,182,212,.6);
  animation:badgePulse 2s ease-in-out infinite;
}
@keyframes badgePulse{
  0%,100%{opacity:.6}
  50%{opacity:1}
}

.hero-title{
  font-family:var(--font-display);
  font-size:clamp(3.2rem,7.5vw,7rem);
  font-weight:800;
  line-height:.92;
  letter-spacing:-.04em;
  margin-bottom:1.75rem;
  color:var(--t-heading);
}
.hero-title .line{display:block}

.hero-desc{
  font-size:1.125rem;
  color:var(--t-body);
  line-height:1.75;
  max-width:480px;
  margin-bottom:3rem;
  font-weight:350;
}

.hero-actions{display:flex;gap:1rem;flex-wrap:wrap}

/* Hero Visual */
.hero-visual{
  display:flex;
  align-items:center;
  justify-content:center;
  position:relative;
}

/* ══ 科技感光环系统 ══ */
.hero-glow{
  position:absolute;
  width:420px;height:420px;
  border-radius:50%;
  background:
    radial-gradient(circle at 40% 40%, rgba(124,58,237,.22) 0%, transparent 50%),
    radial-gradient(circle at 60% 60%, rgba(6,182,212,.16) 0%, transparent 50%);
  animation:glowPulse 5s ease-in-out infinite;
}
.hero-glow::after{
  content:'';
  position:absolute;
  inset:20px;
  border-radius:50%;
  border:1px solid rgba(124,58,237,.08);
  transform:rotate(45deg);
}
@keyframes glowPulse{
  0%,100%{transform:scale(1) rotate(0deg);opacity:.7}
  50%{transform:scale(1.2) rotate(180deg);opacity:1}
}

.orbital-ring{
  position:relative;
  width:320px;height:320px;
}
.orbital-ring::before{
  content:'';
  position:absolute;
  top:50%;left:50%;
  transform:translate(-50%,-50%);
  width:260px;height:260px;
  border-radius:50%;
  border:1px solid rgba(124,58,237,.14);
  box-shadow:0 0 40px rgba(124,58,237,.06),inset 0 0 40px rgba(124,58,237,.04);
}
.orbital-ring::after{
  content:'';
  position:absolute;
  top:50%;left:50%;
  transform:translate(-50%,-50%) rotate(45deg);
  width:300px;height:300px;
  border-radius:50%;
  border:1px dashed rgba(6,182,212,.08);
}
.orbital-core{
  position:absolute;
  top:50%;left:50%;
  transform:translate(-50%,-50%);
  width:72px;height:72px;
  border-radius:50%;
  background:var(--gradient);
  box-shadow:
    0 0 60px rgba(124,58,237,.35),
    0 0 120px rgba(124,58,237,.12),
    0 0 200px rgba(6,182,212,.08);
  animation:coreBeat 3s ease-in-out infinite;
}
.orbital-core::after{
  content:'';
  position:absolute;
  inset:-8px;
  border-radius:50%;
  border:1px solid rgba(255,255,255,.15);
  animation:coreRing 3s ease-in-out infinite;
}
@keyframes coreBeat{
  0%,100%{transform:translate(-50%,-50%) scale(1)}
  50%{transform:translate(-50%,-50%) scale(1.15)}
}
@keyframes coreRing{
  0%,100%{opacity:.3;transform:scale(1)}
  50%{opacity:.8;transform:scale(1.1)}
}
.orbital-particle{
  position:absolute;border-radius:50%;
}
.p1{width:6px;height:6px;background:var(--accent-1);box-shadow:0 0 12px rgba(124,58,237,.7);animation:orbit1 8s linear infinite}
.p2{width:4px;height:4px;background:var(--accent-2);box-shadow:0 0 10px rgba(6,182,212,.7);animation:orbit2 10s linear infinite}
.p3{width:8px;height:8px;background:var(--accent-3);box-shadow:0 0 14px rgba(236,72,153,.7);animation:orbit3 13s linear infinite}
.p4{width:5px;height:5px;background:var(--accent-4);box-shadow:0 0 10px rgba(99,102,241,.7);animation:orbit4 14s linear infinite}
.p5{width:4px;height:4px;background:var(--accent-2);box-shadow:0 0 8px rgba(6,182,212,.7);animation:orbit5 9s linear infinite}
@keyframes orbit1{0%{transform:rotate(0deg) translateX(140px) rotate(0deg)}100%{transform:rotate(360deg) translateX(140px) rotate(-360deg)}}
@keyframes orbit2{0%{transform:rotate(70deg) translateX(118px) rotate(-70deg)}100%{transform:rotate(430deg) translateX(118px) rotate(-430deg)}}
@keyframes orbit3{0%{transform:rotate(140deg) translateX(108px) rotate(-140deg)}100%{transform:rotate(500deg) translateX(108px) rotate(-500deg)}}
@keyframes orbit4{0%{transform:rotate(220deg) translateX(128px) rotate(-220deg)}100%{transform:rotate(580deg) translateX(128px) rotate(-580deg)}}
@keyframes orbit5{0%{transform:rotate(310deg) translateX(95px) rotate(-310deg)}100%{transform:rotate(670deg) translateX(95px) rotate(-670deg)}}

/* ── Hero scroll hint ── */
.hero-scroll{
  position:absolute;bottom:48px;left:50%;
  transform:translateX(-50%);
  display:flex;flex-direction:column;
  align-items:center;gap:10px;
  opacity:.4;
}
.hero-scroll span{
  font-family:var(--font-display);
  font-size:.5625rem;
  letter-spacing:.35em;
  color:var(--t-muted);
}
.hero-scroll .line{
  width:1px;height:36px;
  border-radius:1px;
  background:var(--gradient);
  box-shadow:0 0 8px rgba(124,58,237,.4);
  animation:scrollHint 2s ease-in-out infinite;
}
@keyframes scrollHint{
  0%,100%{height:36px;opacity:.4}
  50%{height:56px;opacity:1}
}

/* ========== BUTTONS ========== */
.btn-primary,.btn-ghost{
  display:inline-flex;align-items:center;gap:10px;
  padding:15px 34px;
  font-family:var(--font-display);
  font-size:.8125rem;font-weight:600;
  letter-spacing:.06em;
  text-transform:uppercase;
  border-radius:var(--r-sm);
  text-decoration:none;
  cursor:pointer;
  transition:all .4s var(--ease-out);
  position:relative;
  overflow:hidden;
}
.btn-primary{
  background:var(--gradient);
  background-size:200% auto;
  color:#fff;
  border:none;
  box-shadow:0 2px 24px rgba(124,58,237,.35),0 0 60px rgba(124,58,237,.08);
}
.btn-primary::before{
  content:'';
  position:absolute;
  inset:0;
  border-radius:inherit;
  background:linear-gradient(135deg,rgba(255,255,255,.1) 0%,transparent 50%);
  pointer-events:none;
}
.btn-primary:hover{
  transform:translateY(-3px);
  box-shadow:0 6px 36px rgba(124,58,237,.5),0 0 80px rgba(124,58,237,.15);
  background-position:100% center;
}
.btn-ghost{
  background:rgba(255,255,255,.02);
  color:var(--t-body);
  border:1px solid var(--border);
}
.btn-ghost:hover{
  border-color:rgba(124,58,237,.35);
  color:var(--accent-1);
  background:rgba(124,58,237,.08);
  transform:translateY(-3px);
  box-shadow:0 0 30px rgba(124,58,237,.08);
}

/* ========== SECTION ========== */
.section{padding:7rem 2rem;position:relative}
.section-alt{
  background:
    radial-gradient(ellipse 70% 60% at 50% 0%, rgba(124,58,237,.1) 0%, transparent 100%),
    radial-gradient(ellipse 50% 40% at 80% 100%, rgba(6,182,212,.08) 0%, transparent 100%),
    var(--bg);
}

.section-header{margin-bottom:7rem}
.section-tag{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-display);
  font-size:.6875rem;
  letter-spacing:.3em;
  color:var(--accent-2);
  text-transform:uppercase;
  margin-bottom:1.75rem;
  padding:5px 16px;
  border-radius:20px;
  border:1px solid rgba(6,182,212,.15);
  background:rgba(6,182,212,.05);
}
.section-tag::before{
  content:'';
  width:20px;height:1px;
  background:rgba(6,182,212,.5);
}
.section-title{
  font-family:var(--font-display);
  font-size:clamp(2.8rem,5.5vw,4.5rem);
  font-weight:800;
  line-height:1;
  letter-spacing:-.03em;
  margin-bottom:1.25rem;
  color:var(--t-heading);
}
.section-desc{
  color:var(--t-body);
  font-size:1.0625rem;
  font-weight:350;
  max-width:520px;
  line-height:1.7;
}

/* ========== PRODUCT ROW ========== */
.product-row{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:4rem;
  align-items:center;
  margin-bottom:4rem;
  position:relative;
  padding:2.5rem 3rem;
  border-radius:var(--r-lg);
  background:var(--bg-glass);
  backdrop-filter:blur(20px);
  -webkit-backdrop-filter:blur(20px);
  border:1px solid var(--border);
  transition:all .5s var(--ease-out);
  overflow:hidden;
}
/* 彩虹渐变边框光晕 */
.product-row::before{
  content:'';
  position:absolute;
  inset:-1px;
  border-radius:inherit;
  background:var(--gradient);
  opacity:0;
  z-index:-1;
  transition:opacity .5s ease;
}
.product-row:hover::before{opacity:.25}
.product-row::after{
  content:'';
  position:absolute;
  inset:0;
  border-radius:inherit;
  background:
    radial-gradient(ellipse at 0% 0%, rgba(124,58,237,.06) 0%, transparent 50%),
    radial-gradient(ellipse at 100% 100%, rgba(6,182,212,.04) 0%, transparent 50%);
  pointer-events:none;
}
.product-row:last-child{margin-bottom:0}
.product-row:hover{
  border-color:var(--border-hl);
  box-shadow:var(--shadow-hover);
  transform:translateY(-4px);
}

/* 产品编号 - 渐变大字 */
.product-num{
  font-family:var(--font-display);
  font-size:7rem;
  font-weight:800;
  line-height:1;
  position:absolute;
  top:-28px;left:2rem;
  pointer-events:none;
  z-index:0;
  background:var(--gradient);
  background-size:200% auto;
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  background-clip:text;
  opacity:.08;
  animation:gradientShift 6s ease infinite;
}
.product-info{position:relative;z-index:1}
.product-tag{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-display);
  font-size:.6875rem;
  letter-spacing:.22em;
  color:var(--accent-1);
  text-transform:uppercase;
  margin-bottom:1.25rem;
  padding:4px 14px;
  border-radius:15px;
  border:1px solid rgba(124,58,237,.15);
  background:rgba(124,58,237,.06);
}
.product-tag::before{
  content:'';
  width:14px;height:1px;
  background:rgba(124,58,237,.5);
}
.product-name{
  font-family:var(--font-display);
  font-size:clamp(1.8rem,3vw,2.6rem);
  font-weight:700;
  line-height:1.1;
  letter-spacing:-.02em;
  margin-bottom:.875rem;
  color:var(--t-heading);
}
.product-desc{
  color:var(--t-body);
  font-size:.95rem;
  line-height:1.75;
  font-weight:350;
  margin-bottom:2rem;
  max-width:400px;
}
.product-link{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-display);
  font-size:.75rem;
  font-weight:600;
  letter-spacing:.12em;
  color:var(--t-muted);
  text-decoration:none;
  text-transform:uppercase;
  padding:8px 20px;
  border-radius:25px;
  border:1px solid var(--border);
  transition:all .35s ease;
}
.product-link:hover{
  color:var(--accent-1);
  border-color:rgba(124,58,237,.3);
  background:rgba(124,58,237,.06);
  gap:14px;
  box-shadow:0 0 20px rgba(124,58,237,.08);
}

/* ── Screenshots ── */
.product-media{position:relative;z-index:1}
.screenshot-wrap{
  position:relative;
  border-radius:var(--r-md);
  overflow:visible;
  transition:transform .5s var(--ease-out);
}
.screenshot-wrap::before{
  content:'';
  position:absolute;
  inset:-2px;
  border-radius:inherit;
  background:var(--gradient);
  background-size:200% auto;
  opacity:0;
  z-index:-1;
  transition:opacity .5s ease;
  animation:gradientShift 6s ease infinite;
}
.screenshot-wrap:hover{transform:translateY(-6px)}
.screenshot-wrap:hover::before{opacity:.35}
.screenshot-img,.ss-placeholder{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  border-radius:var(--r-md);
  display:block;
  border:1px solid var(--border);
  transition:all .4s ease;
}
.screenshot-wrap:hover .screenshot-img,
.screenshot-wrap:hover .ss-placeholder{
  border-color:var(--border-hl);
  box-shadow:0 20px 48px rgba(0,0,0,.5),0 0 0 1px rgba(124,58,237,.1),0 0 40px rgba(124,58,237,.06);
}
.ss-placeholder{
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--bg-raised),var(--bg));
  background-size:200% 200%;
  animation:shiftBg 10s ease infinite;
}
@keyframes shiftBg{
  0%,100%{background-position:0% 50%}
  50%{background-position:100% 50%}
}
.placeholder-inner{text-align:center}
.placeholder-icon{
  width:48px;height:48px;
  color:var(--t-muted);
  margin:0 auto .75rem;opacity:.3;
}
.placeholder-label{
  font-family:var(--font-display);
  font-size:.9375rem;
  font-weight:500;
  color:var(--t-muted);
  letter-spacing:.08em;
}

/* Mobile overlay */
.mobile-overlay{
  position:absolute;
  bottom:-14px;right:-14px;
  z-index:3;
  transition:transform .5s var(--ease-out);
}
.screenshot-wrap:hover .mobile-overlay{
  transform:translate(-10px,-16px) rotate(-3deg);
}
.mobile-frame{
  width:115px;height:230px;
  border-radius:var(--r-lg);
  border:3px solid var(--bg-raised);
  overflow:hidden;
  box-shadow:0 16px 40px rgba(0,0,0,.5),0 0 0 1px var(--border);
  background:var(--bg-deep);
  position:relative;
}
.mobile-frame::before{
  content:'';
  position:absolute;
  top:8px;left:50%;
  transform:translateX(-50%);
  width:40px;height:4px;
  border-radius:2px;
  background:var(--t-muted);
  z-index:4;
}
.mobile-img,.mobile-placeholder{
  width:100%;height:100%;
  object-fit:cover;
  border-radius:19px;
}
.mobile-placeholder{
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(180deg,var(--bg-raised),var(--bg));
}
.mobile-ph-icon{width:24px;height:24px;color:var(--t-muted);opacity:.3}

/* ========== CANVAS ========== */
#bg-canvas{z-index:0}

/* ========== FOOTER ========== */
footer{
  background:
    radial-gradient(ellipse 60% 30% at 50% 0%, rgba(124,58,237,.08) 0%, transparent 100%),
    var(--bg-deep);
  border-top:1px solid var(--border);
  position:relative;
}
footer::before{
  content:'';
  position:absolute;
  top:0;left:0;right:0;
  height:1px;
  background:var(--gradient);
  opacity:.3;
}
.footer-grid{
  display:grid;
  grid-template-columns:2fr 1fr 1.5fr;
  gap:3rem;
  padding-bottom:3rem;
  border-bottom:1px solid var(--border);
  margin-bottom:2.5rem;
}
.footer-brand-logo{
  font-family:var(--font-display);
  font-size:1.75rem;
  font-weight:700;
  color:var(--t-heading);
  text-decoration:none;
}
.footer-brand p{color:var(--t-muted);font-size:.875rem;margin-top:.75rem}
.footer-label{
  display:block;
  font-family:var(--font-display);
  font-size:.625rem;
  letter-spacing:.22em;
  color:var(--accent-1);
  text-transform:uppercase;
  margin-bottom:1rem;
  opacity:.75;
}
.footer-link{
  display:block;
  color:var(--t-muted);
  text-decoration:none;
  font-size:.8125rem;
  padding:3px 0;
  transition:color .3s ease;
  font-weight:350;
}
.footer-link:hover{color:var(--accent-2)}
.footer-bottom{
  display:flex;
  justify-content:space-between;
  align-items:center;
  flex-wrap:wrap;
  gap:12px;
}
.footer-copy{font-size:.75rem;color:var(--t-muted);font-weight:350}
.footer-beian{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.beian-link{
  font-size:.6875rem;
  color:var(--t-muted);
  text-decoration:none;
  transition:color .3s ease;
  font-weight:350;
}
.beian-link:hover{color:var(--t-body)}
.beian-sep{width:1px;height:10px;background:var(--border);display:inline-block}
.beian-police{display:inline-flex;align-items:center;gap:4px}
.police-icon{
  display:inline-block;
  width:14px;height:14px;
  flex-shrink:0;
  vertical-align:middle;
}

/* ========== SCROLLBAR ========== */
::-webkit-scrollbar{width:6px}
::-webkit-scrollbar-track{background:var(--bg-deep)}
::-webkit-scrollbar-thumb{background:var(--bg-raised);border-radius:3px}
::-webkit-scrollbar-thumb:hover{background:rgba(124,58,237,.4)}

/* ========== REVEAL ANIMATIONS ========== */
.reveal-up{animation:revUp .9s var(--ease-out) both}
@keyframes revUp{
  from{opacity:0;transform:translateY(48px)}
  to{opacity:1;transform:translateY(0)}
}
.reveal{
  opacity:0;transform:translateY(40px);
  transition:opacity .8s var(--ease-out),transform .8s var(--ease-out);
}
.reveal.visible{opacity:1;transform:translateY(0)}
.reveal-left{
  opacity:0;transform:translateX(-40px);
  transition:opacity .8s var(--ease-out),transform .8s var(--ease-out);
}
.reveal-left.visible{opacity:1;transform:translateX(0)}
.reveal-right{
  opacity:0;transform:translateX(40px);
  transition:opacity .8s var(--ease-out),transform .8s var(--ease-out);
}
.reveal-right.visible{opacity:1;transform:translateX(0)}

/* ========== RESPONSIVE ========== */
@media(max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:3rem}
  .hero-visual{order:-1}
  .hero-glow{width:280px;height:280px}
  .orbital-ring{width:250px;height:250px}
  .product-row{
    grid-template-columns:1fr;
    gap:2.5rem;
    padding:2rem;
  }
  .product-num{font-size:5rem;top:-20px}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
  .section{padding:4rem 1rem}
  .section-header{margin-bottom:3rem}
  .product-row{padding:1.5rem;gap:1.5rem;border-radius:var(--r-md)}
  .product-num{font-size:3.5rem;top:-16px;left:1rem}
  .mobile-frame{width:80px;height:160px;border-radius:16px}
  .mobile-overlay{bottom:-8px;right:-8px}
  .hero-scroll{display:none}
  .footer-grid{grid-template-columns:1fr;gap:2rem}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}