/* === RESET & VARIABLES === */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg-deep:#06080d;
  --bg-card:#0c1017;
  --bg-card-hover:#111822;
  --bg-surface:#151c28;
  --bg-elevated:#101723;
  --border:#1a2332;
  --border-bright:#2a3a52;
  --text-primary:#e8edf5;
  --text-secondary:#8899b0;
  --text-muted:#556677;
  --accent-cyan:#00d4ff;
  --accent-green:#00ff88;
  --accent-orange:#ff8a00;
  --accent-pink:#ff3d8e;
  --accent-purple:#a855f7;
  --glow-cyan:0 0 30px rgba(0,212,255,.15);
  --glow-green:0 0 30px rgba(0,255,136,.12);
  --shadow-card:0 18px 50px rgba(0,0,0,.28);
  --radius:12px;
  --radius-lg:20px;
  --font-sans:'Noto Sans SC',system-ui,sans-serif;
  --font-mono:'JetBrains Mono',monospace;
  --font-display:'Playfair Display',serif;
}
[data-theme="light"]{
  --bg-deep:#f5f7fa;
  --bg-card:#ffffff;
  --bg-card-hover:#f0f2f5;
  --bg-surface:#eef1f5;
  --bg-elevated:#ffffff;
  --border:#dde1e8;
  --border-bright:#c5ccd6;
  --text-primary:#1a1f2e;
  --text-secondary:#5a6578;
  --text-muted:#8895a7;
  --accent-cyan:#0099cc;
  --accent-green:#00a855;
  --accent-orange:#d97706;
  --accent-pink:#e0336b;
  --accent-purple:#7c3aed;
  --glow-cyan:0 0 20px rgba(0,153,204,.1);
  --glow-green:0 0 20px rgba(0,168,85,.08);
  --shadow-card:0 18px 48px rgba(26,31,46,.08);
}
html{scroll-behavior:smooth;font-size:16px}
body{
  font-family:var(--font-sans);
  background:
    linear-gradient(180deg,rgba(0,212,255,.035),transparent 340px),
    linear-gradient(135deg,rgba(0,255,136,.035),transparent 36%),
    repeating-linear-gradient(90deg,rgba(255,255,255,.018) 0 1px,transparent 1px 118px),
    var(--bg-deep);
  color:var(--text-primary);
  line-height:1.7;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}

/* === NOISE TEXTURE OVERLAY === */
body::before{
  content:'';position:fixed;inset:0;z-index:9999;pointer-events:none;
  background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.03'/%3E%3C/svg%3E");
  background-repeat:repeat;background-size:256px 256px;opacity:.4;
  will-change:transform;transform:translateZ(0);
}

/* === LAYOUT === */
.container{max-width:1280px;margin:0 auto;padding:0 24px}
section{padding:80px 0}

/* === HEADER / NAV === */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(6,8,13,.85);backdrop-filter:blur(20px);
  border-bottom:1px solid var(--border);
  transition:background .3s,box-shadow .3s,border-color .3s;
}
.site-header.is-scrolled{
  background:rgba(6,8,13,.92);
  border-color:rgba(42,58,82,.85);
  box-shadow:0 10px 36px rgba(0,0,0,.2);
}
.nav-inner{
  display:flex;align-items:center;justify-content:space-between;
  height:64px;
}
.logo{
  font-family:var(--font-mono);font-weight:700;font-size:1.1rem;
  color:var(--accent-cyan);letter-spacing:-.02em;
  position:relative;
}
.logo::after{
  content:'';position:absolute;left:0;right:0;bottom:-6px;height:2px;
  background:linear-gradient(90deg,var(--accent-cyan),transparent);
  transform:scaleX(.35);transform-origin:left;opacity:.65;
  transition:transform .25s,opacity .25s;
}
.logo:hover::after{transform:scaleX(1);opacity:1}
.nav-right{display:flex;gap:32px;align-items:center}
.nav-links{display:flex;gap:32px;align-items:center}
.nav-links a{
  font-size:.875rem;color:var(--text-secondary);
  transition:color .2s,transform .2s;font-weight:400;
  display:inline-block;
}
.nav-links a:hover{color:var(--text-primary);transform:translateY(-1px)}
.nav-cta{
  background:transparent;color:var(--text-secondary);
  padding:8px 20px;border-radius:8px;font-weight:700;font-size:.8rem;
  letter-spacing:.03em;transition:all .2s;border:1px solid rgba(255,255,255,.2);
}
.nav-cta:hover{color:var(--text-primary);border-color:rgba(255,255,255,.5);transform:translateY(-1px)}

/* === HERO === */
.hero{
  padding-top:160px;padding-bottom:100px;
  text-align:center;position:relative;overflow:hidden;
}
.hero::before{
  content:'';position:absolute;top:-120px;left:0;
  width:100%;height:660px;
  background:
    linear-gradient(115deg,rgba(0,212,255,.14),transparent 38%),
    linear-gradient(245deg,rgba(168,85,247,.11),transparent 42%),
    repeating-linear-gradient(90deg,rgba(255,255,255,.05) 0 1px,transparent 1px 86px),
    repeating-linear-gradient(0deg,rgba(255,255,255,.035) 0 1px,transparent 1px 86px);
  mask-image:linear-gradient(to bottom,rgba(0,0,0,.82),transparent 86%);
  pointer-events:none;
  animation:heroGrid 16s linear infinite alternate;
}
.hero::after{
  content:'';position:absolute;left:50%;bottom:22px;width:min(900px,72vw);height:1px;
  transform:translateX(-50%);
  background:linear-gradient(90deg,transparent,rgba(0,212,255,.45),transparent);
  opacity:.55;
}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(0,212,255,.08);border:1px solid rgba(0,212,255,.2);
  padding:6px 16px;border-radius:100px;font-size:.8rem;
  color:var(--accent-cyan);margin-bottom:32px;
  font-family:var(--font-mono);
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.02),var(--glow-cyan);
}
.hero-badge::before{content:'>';opacity:.5}
.hero h1{
  font-family:var(--font-sans);font-weight:900;
  font-size:clamp(2.5rem,6vw,4.5rem);
  line-height:1.15;letter-spacing:-.03em;
  margin-bottom:20px;
}
.hero h1 .gradient{
  background:linear-gradient(110deg,var(--accent-cyan),var(--accent-green),var(--accent-cyan));
  background-size:220% 100%;
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;
  background-clip:text;
  animation:gradientShift 5.5s ease-in-out infinite alternate;
}
.hero-sub{
  font-size:1.15rem;color:var(--text-secondary);
  max-width:640px;margin:0 auto 48px;line-height:1.8;font-weight:300;
}
.hero-stats{
  display:flex;justify-content:center;gap:48px;flex-wrap:wrap;
}
.hero-stat{
  text-align:center;min-width:110px;padding:12px 16px;
  border:1px solid rgba(255,255,255,.04);border-radius:12px;
  background:rgba(255,255,255,.025);backdrop-filter:blur(10px);
}
.hero-stat .num{
  font-family:var(--font-mono);font-size:2rem;font-weight:700;
  color:var(--accent-cyan);
}
.hero-stat .label{font-size:.8rem;color:var(--text-muted);margin-top:4px}

/* === QUICK COMPARE TABLE === */
.compare-section{
  background:linear-gradient(180deg,var(--bg-card),rgba(12,16,23,.82));
  border-top:1px solid var(--border);border-bottom:1px solid var(--border);
  position:relative;
}
.section-header{text-align:center;margin-bottom:56px}
.section-header h2{
  font-size:clamp(1.8rem,3.5vw,2.5rem);font-weight:900;
  letter-spacing:-.02em;margin-bottom:12px;
}
.section-header h2::after{
  content:'';display:block;width:52px;height:3px;margin:14px auto 0;
  border-radius:999px;background:linear-gradient(90deg,var(--accent-cyan),var(--accent-green));
}
.section-header p{color:var(--text-secondary);font-size:1rem;font-weight:300}

.table-wrap{
  overflow-x:auto;border-radius:var(--radius-lg);
  border:1px solid var(--border);
  scrollbar-width:thin;scrollbar-color:var(--border-bright) transparent;
  background:var(--bg-card);
  box-shadow:var(--shadow-card);
}
.table-wrap::-webkit-scrollbar{height:6px}
.table-wrap::-webkit-scrollbar-track{background:transparent}
.table-wrap::-webkit-scrollbar-thumb{background:var(--border-bright);border-radius:3px}

.compare-table{
  width:100%;min-width:900px;border-collapse:collapse;
  font-size:.875rem;
}
.compare-table th,.compare-table td{
  padding:16px 20px;text-align:left;
  border-bottom:1px solid var(--border);
  white-space:nowrap;
}
.compare-table thead th{
  background:var(--bg-surface);color:var(--text-muted);
  font-weight:500;font-size:.75rem;letter-spacing:.06em;
  text-transform:uppercase;position:sticky;top:0;
}
.compare-table tbody tr{transition:background .2s,transform .2s}
.compare-table tbody tr:hover{background:rgba(0,212,255,.045);transform:translateX(2px)}
.compare-table tbody tr:last-child td{border-bottom:none}
.compare-table .platform-name{
  font-weight:700;color:var(--text-primary);
  display:flex;align-items:center;gap:10px;
}
.compare-table .platform-name .dot{
  width:8px;height:8px;border-radius:50%;flex-shrink:0;
  box-shadow:0 0 0 4px rgba(0,212,255,.08);
}
.compare-table .price-highlight{
  font-family:var(--font-mono);font-weight:700;
  color:var(--accent-green);font-size:1rem;
}
.compare-table .tag{
  display:inline-block;padding:2px 8px;border-radius:4px;
  font-size:.7rem;font-weight:700;letter-spacing:.03em;
}
.tag-hot{background:rgba(255,61,142,.15);color:var(--accent-pink)}
.tag-new{background:rgba(0,212,255,.12);color:var(--accent-cyan)}
.tag-deal{background:rgba(255,138,0,.12);color:var(--accent-orange)}
.model-list{
  font-family:var(--font-mono);font-size:.75rem;
  color:var(--text-secondary);max-width:240px;
  white-space:normal;line-height:1.6;word-break:break-word;
  overflow-wrap:anywhere;
}
.compare-table td.model-list{
  white-space:normal;
  min-width:220px;
  max-width:280px;
}

/* === PLATFORM DETAIL CARDS === */
.platforms-grid{
  display:grid;gap:32px;
}
.platform-card{
  background:linear-gradient(180deg,var(--bg-elevated),var(--bg-card));
  border:1px solid var(--border);
  border-radius:var(--radius-lg);overflow:hidden;position:relative;
  transition:border-color .3s,box-shadow .3s,transform .3s;
}
.platform-card::before{
  content:'';position:absolute;inset:0 0 auto 0;height:2px;
  background:linear-gradient(90deg,var(--card-accent,var(--accent-cyan)),transparent 58%);
  opacity:.8;
}
.platform-card:hover{
  border-color:var(--border-bright);
  box-shadow:var(--shadow-card),0 0 38px rgba(var(--card-accent-rgb,0,212,255),.13);
  transform:translateY(-4px);
}
.platform-card[id]{scroll-margin-top:80px}
.card-header{
  padding:32px 32px 24px;
  border-bottom:1px solid var(--border);
  display:flex;align-items:flex-start;justify-content:space-between;
  flex-wrap:wrap;gap:16px;
  background:linear-gradient(90deg,rgba(var(--card-accent-rgb,0,212,255),.07),transparent 55%);
}
.card-header-left h2,
.card-header-left h3{
  font-size:1.5rem;font-weight:900;letter-spacing:-.01em;
  margin-bottom:6px;display:flex;align-items:center;gap:12px;
}
.card-header-left .subtitle{
  color:var(--text-secondary);font-size:.875rem;font-weight:300;
}
.card-header-left{min-width:0;flex:1 1 360px}
.card-header-right{text-align:right;min-width:0;flex:1 1 320px}
.card-header-right .models{
  font-family:var(--font-mono);font-size:.75rem;
  color:var(--text-muted);line-height:1.8;
  white-space:normal;word-break:break-word;overflow-wrap:anywhere;
  padding:10px 12px;border-radius:10px;
  background:rgba(255,255,255,.025);
  border:1px solid rgba(255,255,255,.04);
}
.card-header-right .models strong{color:var(--text-secondary)}

.card-body{padding:32px}

/* Plan rows inside card */
.plan-grid{display:grid;gap:16px}
.plan-row{
  display:grid;
  grid-template-columns:140px 1fr auto;
  align-items:center;gap:20px;
  background:linear-gradient(180deg,var(--bg-surface),var(--bg-card));
  border:1px solid var(--border);
  border-radius:var(--radius);padding:20px 24px;
  transition:border-color .2s,background .2s,transform .2s,box-shadow .2s;
}
.plan-row:hover{
  border-color:var(--border-bright);background:var(--bg-card-hover);
  transform:translateY(-2px);box-shadow:0 10px 24px rgba(0,0,0,.14);
}
.plan-name{
  font-weight:700;font-size:1rem;
  display:flex;flex-direction:column;gap:4px;
}
.plan-name .badge{
  font-size:.65rem;font-weight:700;
  padding:2px 8px;border-radius:4px;width:fit-content;
  animation:badgePulse 3.8s ease-in-out infinite;
}
.plan-details{
  display:flex;flex-wrap:wrap;gap:8px 20px;
  font-size:.8rem;color:var(--text-secondary);
}
.plan-details .detail-item{
  display:flex;align-items:center;gap:6px;
}
.plan-details .detail-item::before{
  content:'';width:4px;height:4px;border-radius:50%;
  background:var(--text-muted);flex-shrink:0;
}
.plan-price-area{
  text-align:right;min-width:140px;
}
.plan-price{
  font-family:var(--font-mono);font-weight:700;font-size:1.4rem;
  color:var(--accent-green);line-height:1;
  text-shadow:0 0 18px rgba(0,255,136,.12);
}
.plan-price .unit{font-size:.75rem;font-weight:400;color:var(--text-muted)}
.plan-price-original{
  font-size:.75rem;color:var(--text-muted);
  text-decoration:line-through;margin-top:4px;
}
.plan-price-note{
  font-size:.7rem;color:var(--accent-orange);margin-top:2px;
  font-weight:500;
}

.card-footer{
  padding:20px 32px;border-top:1px solid var(--border);
  display:flex;align-items:center;justify-content:space-between;
  flex-wrap:wrap;gap:12px;
}
.card-features{
  display:flex;flex-wrap:wrap;gap:8px;
}
.feature-tag{
  font-size:.7rem;padding:4px 10px;border-radius:6px;
  background:rgba(0,212,255,.06);color:var(--accent-cyan);
  border:1px solid rgba(0,212,255,.12);font-weight:500;
  transition:transform .2s,border-color .2s,background .2s;
}
.feature-tag:hover{transform:translateY(-1px);border-color:rgba(0,212,255,.28);background:rgba(0,212,255,.1)}
.card-cta{
  display:inline-flex;align-items:center;gap:8px;
  background:linear-gradient(135deg,var(--accent-cyan),#0099cc);
  color:var(--bg-deep);padding:10px 24px;border-radius:8px;
  font-weight:700;font-size:.85rem;transition:all .25s;
  border:none;cursor:pointer;text-decoration:none;position:relative;overflow:hidden;
}
.card-cta::before{
  content:'';position:absolute;inset:0;
  background:linear-gradient(120deg,transparent,rgba(255,255,255,.32),transparent);
  transform:translateX(-120%);transition:transform .45s;
}
.card-cta:hover{
  transform:translateY(-2px);
  box-shadow:var(--glow-cyan);
  filter:brightness(1.1);
}
.card-cta:hover::before{transform:translateX(120%)}
.card-cta svg{width:16px;height:16px;transition:transform .2s}
.card-cta:hover svg{transform:translateX(3px)}

.plan-section-label{
  font-size:.8rem;color:var(--text-muted);margin-bottom:12px;font-weight:500;
  display:flex;align-items:center;gap:8px;
}
.plan-section-label::before{
  content:'';width:18px;height:1px;background:var(--border-bright);
}

.notice-box{
  margin-top:16px;padding:12px 16px;
  background:rgba(255,138,0,.06);border:1px solid rgba(255,138,0,.12);
  border-radius:8px;font-size:.78rem;color:var(--accent-orange);line-height:1.7;
}

/* === TOOLS SECTION === */
.tools-bar{
  margin-top:16px;padding:16px 24px;
  background:rgba(0,212,255,.03);border-radius:var(--radius);
  border:1px solid rgba(0,212,255,.06);
  transition:border-color .2s,background .2s;
}
.tools-bar:hover{background:rgba(0,212,255,.045);border-color:rgba(0,212,255,.12)}
.tools-bar-label{
  font-size:.7rem;color:var(--text-muted);
  text-transform:uppercase;letter-spacing:.06em;
  margin-bottom:8px;font-weight:500;
}
.tools-list{
  display:flex;flex-wrap:wrap;gap:6px;
}
.tool-chip{
  font-size:.7rem;padding:3px 8px;border-radius:4px;
  background:var(--bg-card);color:var(--text-secondary);
  border:1px solid var(--border);font-family:var(--font-mono);
  transition:transform .18s,border-color .18s,color .18s;
}
.tool-chip:hover{transform:translateY(-1px);border-color:var(--border-bright);color:var(--text-primary)}

/* === FAQ === */
.faq-section{background:var(--bg-card);border-top:1px solid var(--border)}
.faq-grid{max-width:800px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--border)}
.faq-q{
  padding:20px 0;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;
  gap:16px;font-weight:500;font-size:.95rem;
  color:var(--text-primary);transition:color .2s;
  list-style:none;
}
.faq-q::-webkit-details-marker{display:none}
.faq-q::after{
  content:'+';font-family:var(--font-mono);font-size:1.2rem;
  color:var(--text-muted);transition:transform .3s;flex-shrink:0;
}
details[open] .faq-q::after{content:'−'}
.faq-a{
  padding:0 0 20px;color:var(--text-secondary);
  font-size:.9rem;line-height:1.8;font-weight:300;
  animation:faqOpen .24s ease;
}

/* === FOOTER === */
.site-footer{
  border-top:1px solid var(--border);
  padding:40px 0;text-align:center;
}
.footer-disclaimer{
  font-size:.75rem;color:var(--text-muted);
  max-width:600px;margin:0 auto 16px;line-height:1.8;
}
.footer-links{
  display:flex;justify-content:center;gap:24px;flex-wrap:wrap;
  margin-bottom:16px;
}
.footer-links a{
  font-size:.8rem;color:var(--text-secondary);
  transition:color .2s;
}
.footer-links a:hover{color:var(--accent-cyan)}
.footer-copy{font-size:.7rem;color:var(--text-muted)}

/* === LIGHT THEME OVERRIDES === */
[data-theme="light"] body::before{opacity:.08}
[data-theme="light"] .site-header{background:rgba(245,247,250,.85)}
[data-theme="light"] .site-header.is-scrolled{background:rgba(245,247,250,.94);box-shadow:0 10px 30px rgba(26,31,46,.08)}
[data-theme="light"] .nav-cta{border-color:rgba(0,0,0,.15)}
[data-theme="light"] .nav-cta:hover{border-color:rgba(0,0,0,.35);color:var(--text-primary)}
[data-theme="light"] .hero::before{
  background:
    linear-gradient(115deg,rgba(0,153,204,.12),transparent 38%),
    linear-gradient(245deg,rgba(124,58,237,.08),transparent 42%),
    repeating-linear-gradient(90deg,rgba(26,31,46,.055) 0 1px,transparent 1px 86px),
    repeating-linear-gradient(0deg,rgba(26,31,46,.04) 0 1px,transparent 1px 86px);
}
[data-theme="light"] .compare-section{background:linear-gradient(180deg,#fff,#f5f7fa)}
[data-theme="light"] .compare-table tbody tr:hover{background:rgba(0,153,204,.04)}
[data-theme="light"] .platform-card:hover{box-shadow:0 8px 40px rgba(0,0,0,.08)}
[data-theme="light"] .card-header-right .models{background:rgba(0,0,0,.025);border-color:rgba(0,0,0,.045)}
[data-theme="light"] .card-cta{color:#fff}
[data-theme="light"] .feature-tag{background:rgba(0,153,204,.08);border-color:rgba(0,153,204,.15)}
[data-theme="light"] .tools-bar{background:rgba(0,153,204,.04);border-color:rgba(0,153,204,.08)}
[data-theme="light"] .tool-chip{background:var(--bg-surface)}
[data-theme="light"] .hero-badge{background:rgba(0,153,204,.08);border-color:rgba(0,153,204,.2)}

/* === THEME TOGGLE === */
.theme-toggle{
  background:rgba(255,255,255,.04);border:1px solid var(--border);border-radius:9px;cursor:pointer;
  font-size:1.2rem;line-height:1;padding:6px;
  color:var(--text-secondary);transition:color .2s,transform .2s,border-color .2s,background .2s;
  display:flex;align-items:center;
}
.theme-toggle:hover{color:var(--text-primary);transform:rotate(8deg);border-color:var(--border-bright);background:var(--bg-card-hover)}

/* === ANIMATIONS === */
@keyframes fadeUp{
  from{opacity:0;transform:translateY(24px)}
  to{opacity:1;transform:translateY(0)}
}
@keyframes heroGrid{
  from{background-position:0 0,0 0,0 0,0 0;opacity:.62}
  to{background-position:0 0,0 0,34px 18px,18px 34px;opacity:.88}
}
@keyframes gradientShift{
  from{background-position:0% 50%}
  to{background-position:100% 50%}
}
@keyframes badgePulse{
  0%,100%{box-shadow:0 0 0 rgba(0,212,255,0)}
  50%{box-shadow:0 0 18px rgba(0,212,255,.13)}
}
@keyframes faqOpen{
  from{opacity:0;transform:translateY(-4px)}
  to{opacity:1;transform:translateY(0)}
}
.animate{opacity:0;animation:fadeUp .6s ease forwards}
.animate-d1{animation-delay:.1s}
.animate-d2{animation-delay:.2s}
.animate-d3{animation-delay:.3s}
.animate-d4{animation-delay:.4s}
.animate-d5{animation-delay:.5s}

.reveal{
  opacity:0;
  transform:translateY(28px);
  transition:opacity .65s ease,transform .65s ease;
  transition-delay:var(--reveal-delay,0ms);
}
.reveal.is-visible{
  opacity:1;
  transform:translateY(0);
}
.compare-row{
  opacity:0;
  transform:translateY(10px);
  animation:fadeUp .5s ease forwards;
  animation-delay:calc(.2s + var(--row-delay,0ms));
}

/* === RESPONSIVE === */
@media(max-width:768px){
  section{padding:56px 0}
  .nav-right{gap:16px}
  .nav-links{display:none}
  .hero{padding-top:120px;padding-bottom:60px}
  .hero-stats{gap:24px}
  .hero-stat{min-width:130px}
  .hero-stat .num{font-size:1.5rem}
  .card-header{padding:24px 20px 20px}
  .card-body{padding:20px}
  .card-footer{padding:16px 20px}
  .plan-row{
    grid-template-columns:1fr;
    gap:12px;padding:16px;
  }
  .plan-price-area{text-align:left}
  .compare-table th,.compare-table td{padding:12px 14px;font-size:.8rem}
  .card-header-right{text-align:left}
}
@media(max-width:480px){
  .container{padding:0 16px}
  .hero h1{font-size:2rem}
  .hero-sub{font-size:1rem}
}

/* === SCROLL INDICATOR === */
.scroll-hint{
  display:flex;align-items:center;gap:8px;
  justify-content:center;margin-bottom:12px;
  font-size:.75rem;color:var(--text-muted);
  font-family:var(--font-mono);
}
.scroll-hint svg{width:16px;height:16px;opacity:.5;animation:nudgeX 1.8s ease-in-out infinite}
@keyframes nudgeX{
  0%,100%{transform:translateX(0)}
  50%{transform:translateX(5px)}
}

/* === PLATFORM ACCENT COLORS === */
.accent-zhipu{--card-accent:#4f6ef7;--card-accent-rgb:79,110,247}
.accent-minimax{--card-accent:#ff6b35;--card-accent-rgb:255,107,53}
.accent-kimi{--card-accent:#8b5cf6;--card-accent-rgb:139,92,246}
.accent-volc{--card-accent:#00d4ff;--card-accent-rgb:0,212,255}
.accent-aliyun{--card-accent:#ff6a00;--card-accent-rgb:255,106,0}
.accent-tencent{--card-accent:#0072ff;--card-accent-rgb:0,114,255}

.platform-card .card-header{
  border-left:3px solid var(--card-accent,var(--accent-cyan));
}

@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.01ms!important;
    animation-iteration-count:1!important;
    scroll-behavior:auto!important;
    transition-duration:.01ms!important;
  }
  .reveal,.compare-row{opacity:1;transform:none}
}

/* SEO 静态回退内容（noscript） */
.seo-fallback{
  max-width:760px;margin:0 auto;padding:24px;
  background:var(--bg-surface);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);line-height:1.7;
}
.seo-fallback h3{font-size:1.25rem;font-weight:900;margin-bottom:16px;color:var(--text-primary)}
.seo-fallback ul{list-style:none;display:grid;gap:12px}
.seo-fallback li{font-size:.95rem;color:var(--text-secondary)}
.seo-fallback strong{color:var(--text-primary)}
.seo-fallback a{color:var(--accent-cyan);text-decoration:underline}