/* ============================================
   时代桌球 Official Website — Premium Billiards Lounge
   ============================================ */

/* --- 1. Custom Properties --- */
:root {
  --c-bg:          #1a2520;
  --c-bg-alt:      #202e28;
  --c-surface:     #273830;
  --c-surface-hi:  #2e4538;
  --c-felt:        #1a5c1a;
  --c-felt-deep:   #0a3d0a;
  --c-felt-muted:  #134813;
  --c-wood:        #5c3317;
  --c-wood-light:  #7a4a2a;
  --c-gold:        #d4af37;
  --c-gold-dim:    #a88b2c;
  --c-gold-bright: #edd56b;
  --c-text:        #f0ead6;
  --c-text-sec:    #c4bca5;
  --c-text-muted:  #8a8474;
  --c-border:      #365040;
  --c-border-light:#4e7060;

  --font-display:  'Cinzel', 'Georgia', serif;
  --font-body:     -apple-system, BlinkMacSystemFont, 'PingFang SC',
                    'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue',
                    Arial, sans-serif;

  --radius:  6px;
  --ease:    cubic-bezier(.25,.46,.45,.94);
  --ease-out: cubic-bezier(.16,1,.3,1);
  --shadow-card: 0 4px 24px rgba(0,0,0,.35), 0 1px 3px rgba(0,0,0,.2);
  --shadow-glow: 0 0 40px rgba(26,92,26,.18);
}

/* --- 2. Reset & Base --- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;font-size:16px}
body{
  font-family:var(--font-body);
  background:var(--c-bg);
  color:var(--c-text);
  line-height:1.7;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--c-gold);text-decoration:none;transition:color .25s var(--ease)}
a:hover{color:var(--c-gold-bright)}
ul,ol{list-style:none}
::selection{background:var(--c-felt);color:#fff}

/* Noise texture overlay (pseudo-element on body) */
body::after{
  content:'';position:fixed;inset:0;pointer-events:none;z-index:9999;
  opacity:.025;
  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)'/%3E%3C/svg%3E");
  background-size:128px 128px;
}

/* --- 3. Typography --- */
h1,h2,h3,h4{font-weight:700;line-height:1.25;color:var(--c-text)}
.section-title{
  font-size:clamp(1.75rem,4vw,2.5rem);
  text-align:center;
  margin-bottom:.25em;
  letter-spacing:.04em;
}
.section-subtitle{
  text-align:center;
  color:var(--c-text-sec);
  font-size:1.05rem;
  margin-bottom:2.5rem;
  max-width:540px;
  margin-left:auto;margin-right:auto;
}
.gold-line{
  display:block;width:60px;height:2px;
  background:linear-gradient(90deg,transparent,var(--c-gold),transparent);
  margin:1rem auto 1.5rem;
}
.en-display{
  font-family:var(--font-display);
  letter-spacing:.18em;
  text-transform:uppercase;
}

/* --- 4. Navigation --- */
.navbar{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  padding:0 clamp(1rem,4vw,3rem);
  height:64px;display:flex;align-items:center;justify-content:space-between;
  transition:background .4s var(--ease),box-shadow .4s var(--ease),backdrop-filter .4s;
}
.navbar.scrolled{
  background:rgba(11,15,13,.92);
  backdrop-filter:blur(12px);
  box-shadow:0 1px 0 var(--c-border);
}
.nav-logo{
  font-size:1.25rem;font-weight:800;
  color:var(--c-text);letter-spacing:.06em;
  display:flex;align-items:center;gap:.5rem;
}
.nav-logo .logo-ball{
  width:28px;height:28px;border-radius:50%;
  overflow:hidden;flex-shrink:0;
  border:1.5px solid var(--c-gold);
}
.nav-logo .logo-ball img{
  width:100%;height:100%;display:block;
}
.nav-links{display:flex;gap:2rem;align-items:center}
.nav-links a{
  font-size:.9rem;color:var(--c-text-sec);
  position:relative;padding:.25rem 0;
  transition:color .25s var(--ease);
}
.nav-links a::after{
  content:'';position:absolute;bottom:0;left:0;width:0;height:1.5px;
  background:var(--c-gold);
  transition:width .3s var(--ease);
}
.nav-links a:hover{color:var(--c-text)}
.nav-links a:hover::after{width:100%}

/* Hamburger */
.hamburger{
  display:none;flex-direction:column;gap:5px;
  cursor:pointer;background:none;border:none;padding:4px;
}
.hamburger span{
  display:block;width:24px;height:2px;
  background:var(--c-text);border-radius:2px;
  transition:transform .3s var(--ease),opacity .3s;
}
.hamburger.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.hamburger.active span:nth-child(2){opacity:0}
.hamburger.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* Mobile nav overlay */
.nav-mobile{
  display:none;position:fixed;inset:0;z-index:999;
  background:rgba(11,15,13,.96);backdrop-filter:blur(16px);
  flex-direction:column;align-items:center;justify-content:center;gap:2rem;
  opacity:0;pointer-events:none;
  transition:opacity .35s var(--ease);
}
.nav-mobile.open{opacity:1;pointer-events:auto}
.nav-mobile a{
  font-size:1.25rem;color:var(--c-text-sec);
  transition:color .25s;letter-spacing:.06em;
}
.nav-mobile a:hover{color:var(--c-gold)}

/* --- 5. Hero --- */
.hero{
  position:relative;min-height:100vh;
  display:flex;align-items:center;justify-content:center;
  overflow:hidden;
}
.hero-bg{
  position:absolute;inset:0;z-index:0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 40%,rgba(34,120,34,.55) 0%,rgba(20,70,20,.3) 40%,transparent 70%),
    radial-gradient(ellipse 60% 40% at 50% 38%,rgba(212,175,55,.25) 0%,transparent 50%),
    radial-gradient(ellipse at 75% 65%,rgba(212,175,55,.15) 0%,transparent 40%),
    radial-gradient(ellipse at 25% 70%,rgba(212,175,55,.08) 0%,transparent 40%),
    linear-gradient(180deg,#0e1810 0%,#143020 30%,#184a28 50%,#143020 70%,#0e1810 100%);
}
.hero-bg-image{
  position:absolute;inset:0;z-index:1;
  background:url('../images/hero-bg.jpg') center/cover no-repeat;
  opacity:.28;
  filter:saturate(.75) brightness(.6);
}
.hero-vignette{
  position:absolute;inset:0;z-index:2;
  background:radial-gradient(ellipse 90% 80% at center,transparent 30%,rgba(10,20,14,.7) 100%);
}
.hero-content{
  position:relative;z-index:3;text-align:center;
  padding:0 1.5rem;
  max-width:800px;
}
.hero-label{
  font-family:var(--font-display);
  font-size:clamp(.75rem,1.8vw,1rem);
  letter-spacing:.35em;
  text-transform:uppercase;
  color:var(--c-gold);
  margin-bottom:1rem;
  opacity:1;
}
.hero-title{
  font-size:clamp(2.5rem,7vw,5rem);
  font-weight:900;
  letter-spacing:.08em;
  line-height:1.1;
  margin-bottom:.5rem;
  background:linear-gradient(135deg,#fff 0%,var(--c-gold-bright) 40%,var(--c-gold) 60%,#fff 100%);
  background-size:200% 200%;
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;
  background-clip:text;
  animation:shimmer 6s ease-in-out infinite;
}
@keyframes shimmer{
  0%,100%{background-position:0% 50%}
  50%{background-position:100% 50%}
}
.hero-tagline{
  font-size:clamp(1rem,2.5vw,1.35rem);
  color:var(--c-text);
  letter-spacing:.15em;
  opacity:.9;
  margin-bottom:2rem;
}
.hero-cta{
  display:inline-block;
  padding:.85rem 2.5rem;
  border:1.5px solid var(--c-gold);
  color:var(--c-gold);
  font-size:.95rem;letter-spacing:.12em;
  border-radius:var(--radius);
  transition:all .35s var(--ease);
  position:relative;overflow:hidden;
}
.hero-cta::before{
  content:'';position:absolute;inset:0;
  background:var(--c-gold);opacity:0;
  transition:opacity .35s;
}
.hero-cta:hover{color:var(--c-bg)}
.hero-cta:hover::before{opacity:1}
.hero-cta span{position:relative;z-index:1}

/* Decorative balls */
.hero-decor{
  position:absolute;z-index:2;pointer-events:none;
  border-radius:50%;
  box-shadow:inset -3px -3px 6px rgba(0,0,0,.35),
             inset 3px 3px 6px rgba(255,255,255,.1);
  opacity:.4;
}
.hero-decor.ball-1{width:60px;height:60px;top:18%;left:8%;background:radial-gradient(circle at 38% 36%,rgba(255,255,255,.35) 0%,transparent 22%),radial-gradient(circle,#c0392b,#7b241c);animation:float 8s ease-in-out infinite}
.hero-decor.ball-2{width:40px;height:40px;top:65%;right:12%;background:radial-gradient(circle at 38% 36%,rgba(255,255,255,.35) 0%,transparent 22%),radial-gradient(circle,#2980b9,#1a5276);animation:float 6s ease-in-out infinite 1s}
.hero-decor.ball-3{width:50px;height:50px;bottom:22%;left:15%;background:radial-gradient(circle at 38% 36%,rgba(255,255,255,.35) 0%,transparent 22%),radial-gradient(circle,#f39c12,#b7770a);animation:float 7s ease-in-out infinite 2s}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-18px)}}

/* Scroll indicator */
.scroll-hint{
  position:absolute;bottom:2rem;left:50%;transform:translateX(-50%);
  z-index:3;display:flex;flex-direction:column;align-items:center;gap:.5rem;
  color:var(--c-text-muted);font-size:.75rem;letter-spacing:.15em;
}
.scroll-hint-line{
  width:1px;height:32px;
  background:linear-gradient(to bottom,var(--c-gold),transparent);
  animation:scrollPulse 2s ease-in-out infinite;
}
@keyframes scrollPulse{0%,100%{opacity:.3;transform:scaleY(.6)}50%{opacity:1;transform:scaleY(1)}}

/* --- 6. Sections --- */
.section{
  padding:clamp(4rem,8vw,7rem) clamp(1rem,5vw,4rem);
  position:relative;
}
.section--alt{background:var(--c-bg-alt)}
.section--felt{
  background:
    repeating-linear-gradient(0deg,transparent,transparent 3px,rgba(0,0,0,.012) 3px,rgba(0,0,0,.012) 6px),
    radial-gradient(ellipse at 50% 30%,rgba(26,92,26,.18) 0%,transparent 60%),
    linear-gradient(135deg,#0f4a18 0%,#186028 50%,#0f4a18 100%);
}
.container{
  max-width:1100px;margin:0 auto;
}

/* --- 7. Game Intro --- */
.intro-text{
  max-width:720px;margin:0 auto;
  font-size:1.05rem;line-height:1.9;
  color:var(--c-text-sec);
  text-align:center;
}
.intro-platforms{
  display:flex;justify-content:center;gap:1rem;
  margin-top:2rem;flex-wrap:wrap;
}
.platform-badge{
  display:inline-flex;align-items:center;gap:.4rem;
  padding:.45rem 1.1rem;
  border:1px solid var(--c-border-light);
  border-radius:20px;font-size:.82rem;
  color:var(--c-text-sec);
  background:var(--c-surface);
  transition:border-color .25s,color .25s;
}
.platform-badge:hover{border-color:var(--c-gold-dim);color:var(--c-gold)}
.platform-badge svg{width:16px;height:16px;fill:currentColor}

/* --- 8. Game Modes Cards --- */
.modes-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(280px,1fr));
  gap:1.5rem;
}
.mode-card{
  position:relative;
  background:
    repeating-linear-gradient(0deg,transparent,transparent 2px,rgba(0,0,0,.02) 2px,rgba(0,0,0,.02) 4px),
    linear-gradient(170deg,var(--c-surface) 0%,var(--c-surface-hi) 100%);
  border:1px solid var(--c-border);
  border-radius:var(--radius);
  padding:2rem 1.75rem;
  transition:transform .4s var(--ease-out),border-color .35s,box-shadow .35s;
  overflow:hidden;
}
.mode-card::before{
  content:'';position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--c-gold-dim),var(--c-gold),var(--c-gold-dim));
  opacity:0;transition:opacity .35s;
}
.mode-card:hover{
  transform:translateY(-6px);
  border-color:var(--c-border-light);
  box-shadow:var(--shadow-glow);
}
.mode-card:hover::before{opacity:1}
.mode-icon{
  width:56px;height:56px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-size:1.6rem;margin-bottom:1.25rem;
  border:1.5px solid var(--c-border-light);
  background:var(--c-bg);
  overflow:hidden;
}
.mode-icon svg{
  width:48px;height:48px;flex-shrink:0;
}
.mode-card h3{
  font-size:1.2rem;margin-bottom:.65rem;
  letter-spacing:.04em;
}
.mode-card p{
  color:var(--c-text-sec);font-size:.92rem;
  line-height:1.75;
}
.mode-card .mode-en{
  font-family:var(--font-display);
  font-size:.7rem;letter-spacing:.15em;
  color:var(--c-text-muted);
  text-transform:uppercase;
  margin-bottom:.75rem;
}

/* --- 9. Features Grid --- */
.features-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
  gap:1.25rem;
}
.feature-item{
  text-align:center;padding:1.75rem 1rem;
  border-radius:var(--radius);
  background:var(--c-surface);
  border:1px solid var(--c-border);
  transition:border-color .3s,transform .3s var(--ease-out);
}
.feature-item:hover{
  border-color:var(--c-border-light);
  transform:translateY(-3px);
}
.feature-icon{
  font-size:2rem;margin-bottom:.75rem;
  display:block;
}
.feature-item h4{
  font-size:.95rem;margin-bottom:.4rem;
  letter-spacing:.04em;
}
.feature-item p{
  font-size:.82rem;color:var(--c-text-sec);
  line-height:1.6;
}

/* --- 10. About & Contact --- */
.about-text{
  max-width:680px;margin:0 auto;
  text-align:center;color:var(--c-text-sec);
  font-size:1rem;line-height:1.85;
}
.contact-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(200px,1fr));
  gap:1.25rem;
  margin-top:2rem;
}
.contact-card{
  text-align:center;padding:1.5rem 1rem;
  background:var(--c-surface);
  border:1px solid var(--c-border);
  border-radius:var(--radius);
}
.contact-card .icon{
  font-size:1.5rem;margin-bottom:.5rem;display:block;
}
.contact-card h4{font-size:.9rem;margin-bottom:.25rem}
.contact-card p{font-size:.82rem;color:var(--c-text-sec)}

/* --- 11. Footer --- */
.site-footer{
  background:
    linear-gradient(180deg,var(--c-bg) 0%,#141e18 100%);
  border-top:1px solid var(--c-border);
  padding:3rem clamp(1rem,5vw,4rem) 1.5rem;
}
.footer-inner{
  max-width:1100px;margin:0 auto;
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
  gap:2rem;
  margin-bottom:2.5rem;
}
.footer-col h5{
  font-size:.8rem;letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--c-gold);
  margin-bottom:.75rem;
}
.footer-col p,.footer-col a{
  font-size:.82rem;color:var(--c-text-sec);
  line-height:1.8;display:block;
}
.footer-col a:hover{color:var(--c-gold)}
.footer-bottom{
  border-top:1px solid var(--c-border);
  padding-top:1.25rem;
  text-align:center;
  font-size:.78rem;
  color:var(--c-text-muted);
  line-height:2;
}
.footer-bottom a{color:var(--c-text-muted)}
.footer-bottom a:hover{color:var(--c-gold)}
.footer-icp{margin-top:.35rem}
.footer-icp a{margin:0 .5rem}

/* --- 12. Legal Pages --- */
.legal-page{
  padding:calc(64px + 3rem) clamp(1rem,5vw,4rem) 4rem;
  min-height:100vh;
}
.legal-page .container{max-width:800px}
.legal-page h1{
  font-size:clamp(1.5rem,3.5vw,2rem);
  text-align:center;
  margin-bottom:.25rem;
}
.legal-page .legal-update{
  text-align:center;color:var(--c-text-muted);
  font-size:.85rem;margin-bottom:2rem;
}
.legal-page h2{
  font-size:1.15rem;
  color:var(--c-gold);
  margin:2.5rem 0 .75rem;
  padding-bottom:.35rem;
  border-bottom:1px solid var(--c-border);
}
.legal-page h3{
  font-size:1rem;
  color:var(--c-text);
  margin:1.5rem 0 .5rem;
}
.legal-page p,.legal-page li{
  font-size:.9rem;
  color:var(--c-text-sec);
  line-height:1.85;
  margin-bottom:.6rem;
}
.legal-page ol,.legal-page ul{padding-left:1.5rem;margin-bottom:.75rem}
.legal-page ol{list-style:decimal}
.legal-page ul{list-style:disc}
.legal-page li{margin-bottom:.35rem}
.legal-page strong{color:var(--c-text);font-weight:600}
.legal-page table{
  width:100%;border-collapse:collapse;
  margin:1rem 0;font-size:.85rem;
}
.legal-page th,.legal-page td{
  padding:.55rem .75rem;
  border:1px solid var(--c-border);
  text-align:left;
}
.legal-page th{
  background:var(--c-surface);
  color:var(--c-text);
  font-weight:600;
}
.legal-page td{color:var(--c-text-sec)}

/* Legal nav pill (back to home) */
.legal-back{
  display:inline-flex;align-items:center;gap:.4rem;
  font-size:.85rem;color:var(--c-text-muted);
  margin-bottom:1.5rem;
  transition:color .25s;
}
.legal-back:hover{color:var(--c-gold)}

/* --- 13. Scroll Reveal --- */
.reveal{
  opacity:0;
  transform:translateY(28px);
  transition:opacity .7s var(--ease-out),transform .7s var(--ease-out);
}
.reveal.visible{
  opacity:1;
  transform:translateY(0);
}
.reveal-delay-1{transition-delay:.1s}
.reveal-delay-2{transition-delay:.2s}
.reveal-delay-3{transition-delay:.3s}

/* --- 14. Cooperation Form --- */
.coop-page{
  padding:calc(64px + 3rem) clamp(1rem,5vw,4rem) 4rem;
  min-height:100vh;
}
.coop-page .container{max-width:800px}
.coop-page h1{
  font-size:clamp(1.5rem,3.5vw,2rem);
  text-align:center;margin-bottom:.25rem;
}
.coop-intro{
  max-width:640px;margin:0 auto 2.5rem;
  text-align:center;color:var(--c-text-sec);line-height:1.85;font-size:.95rem;
}
.coop-form{
  display:grid;gap:1.25rem;
  grid-template-columns:1fr 1fr;
}
.form-group{display:flex;flex-direction:column;gap:.35rem}
.form-group.full{grid-column:1/-1}
.form-group label{
  font-size:.82rem;color:var(--c-text-sec);letter-spacing:.03em;
}
.form-group label .req{color:var(--c-gold);margin-left:2px}
.form-input,.form-select,.form-textarea{
  background:var(--c-surface);
  border:1px solid var(--c-border);
  border-radius:var(--radius);
  padding:.65rem .9rem;
  color:var(--c-text);
  font-family:var(--font-body);
  font-size:.9rem;
  transition:border-color .25s;
  outline:none;
}
.form-input:focus,.form-select:focus,.form-textarea:focus{
  border-color:var(--c-gold);
}
.form-input::placeholder,.form-textarea::placeholder{color:var(--c-text-muted)}
.form-select{
  appearance:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%23d4af37' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat:no-repeat;
  background-position:right .9rem center;
  padding-right:2.4rem;
  cursor:pointer;
}
.form-textarea{resize:vertical;min-height:100px;line-height:1.6}
.checkbox-group{
  display:flex;flex-wrap:wrap;gap:.6rem;
}
.checkbox-group label{
  display:inline-flex;align-items:center;gap:.35rem;
  font-size:.88rem;color:var(--c-text-sec);cursor:pointer;
}
.checkbox-group input[type=checkbox]{
  accent-color:var(--c-gold);width:16px;height:16px;cursor:pointer;
}
.btn-primary{
  grid-column:1/-1;
  padding:.8rem 2rem;
  background:var(--c-gold);
  color:var(--c-bg);
  font-size:.95rem;font-weight:700;
  letter-spacing:.08em;
  border:none;border-radius:var(--radius);
  cursor:pointer;
  transition:background .25s,transform .2s;
}
.btn-primary:hover{background:var(--c-gold-bright);transform:translateY(-2px)}
.btn-primary:active{transform:translateY(0)}
.form-error{
  grid-column:1/-1;
  color:#e05050;font-size:.82rem;
  display:none;
}
.form-error.show{display:block}

/* Quote result */
.quote-result{
  grid-column:1/-1;
  margin-top:1rem;
  padding:2rem;
  background:var(--c-surface);
  border:1px solid var(--c-gold-dim);
  border-radius:var(--radius);
  display:none;
}
.quote-result.show{display:block}
.quote-price{
  text-align:center;margin-bottom:1.5rem;
}
.quote-price .label{font-size:.85rem;color:var(--c-text-sec);margin-bottom:.3rem}
.quote-price .amount{
  font-size:2rem;font-weight:900;
  color:var(--c-gold);
  letter-spacing:.02em;
}
.quote-price .note{font-size:.78rem;color:var(--c-text-muted);margin-top:.25rem}
.payment-info{
  background:var(--c-bg);
  border:1px solid var(--c-border);
  border-radius:var(--radius);
  padding:1.25rem;margin-bottom:1.5rem;
}
.payment-info h4{
  font-size:.9rem;color:var(--c-gold);margin-bottom:.75rem;
  letter-spacing:.05em;
}
.payment-info .row{
  display:flex;justify-content:space-between;
  font-size:.85rem;padding:.25rem 0;
  border-bottom:1px dashed var(--c-border);
}
.payment-info .row:last-child{border-bottom:none}
.payment-info .row .k{color:var(--c-text-muted)}
.payment-info .row .v{color:var(--c-text);font-weight:500}
.quote-notice{
  font-size:.78rem;color:var(--c-text-muted);
  text-align:center;line-height:1.7;
}

/* --- 15. Store Page --- */
.store-hero {
  padding: calc(64px + 2.5rem) clamp(1rem,5vw,4rem) 2rem;
  text-align: center;
}
.store-hero h1 {
  font-size: clamp(1.5rem,3.5vw,2rem);
  margin-bottom: .25rem;
}
.store-subtitle {
  color: var(--c-text-sec);
  font-size: .95rem;
  max-width: 480px;
  margin: 0 auto;
}

/* Category Tabs */
.store-tabs {
  display: flex; justify-content: center; gap: .5rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}
.store-tab {
  padding: .5rem 1.25rem;
  border: 1px solid var(--c-border);
  border-radius: 20px;
  background: transparent;
  color: var(--c-text-sec);
  font-family: var(--font-body);
  font-size: .85rem; cursor: pointer;
  transition: all .25s;
}
.store-tab:hover {
  border-color: var(--c-gold-dim);
  color: var(--c-gold);
}
.store-tab.active {
  background: var(--c-gold);
  color: var(--c-bg);
  border-color: var(--c-gold);
  font-weight: 600;
}

/* Store Page Layout */
.store-page {
  padding: 1rem clamp(1rem,5vw,4rem) 5rem;
  min-height: 60vh;
}

/* Product Grid */
.store-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.5rem;
}

/* Product Card */
.product-card {
  position: relative;
  background: linear-gradient(170deg, var(--c-surface) 0%, var(--c-surface-hi) 100%);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform .35s var(--ease-out), border-color .35s, box-shadow .35s;
}
.product-card:hover {
  transform: translateY(-6px);
  border-color: var(--c-border-light);
  box-shadow: var(--shadow-glow);
}
.product-card .pc-badge {
  position: absolute; top: 12px; right: 12px; z-index: 2;
  padding: .2rem .6rem;
  border-radius: 3px;
  font-size: .7rem; font-weight: 700; letter-spacing: .03em;
}
.pc-badge.hot {
  background: #e05050; color: #fff;
}
.pc-badge.new {
  background: var(--c-gold); color: var(--c-bg);
}
.pc-badge.sale {
  background: #2ecc71; color: #fff;
}
.product-card .pc-visual {
  height: 140px;
  display: flex; align-items: center; justify-content: center;
  font-size: 3rem;
  background: var(--c-bg);
  border-bottom: 1px solid var(--c-border);
  position: relative; overflow: hidden;
}
.pc-visual .pc-glow {
  position: absolute; width: 80px; height: 80px; border-radius: 50%;
  filter: blur(40px); opacity: .35;
}
.pc-icon {
  position: relative; z-index: 1;
  font-size: 2.8rem;
}
.pc-svg-icon {
  position: relative; z-index: 1;
  display: block;
}
.pc-icon.coin { color: #f0c430; }
.pc-icon.diamond { color: #5dade2; }
.pc-icon.funcoin { color: #e67e22; }
.pc-icon.cue { color: #c9a87c; }
.pc-icon.skin { color: #e91e90; }
.pc-icon.effect { color: #9b59b6; }
.product-card .pc-body {
  padding: 1.25rem;
}
.product-card .pc-cat {
  font-size: .7rem; letter-spacing: .1em;
  color: var(--c-text-muted);
  text-transform: uppercase;
  margin-bottom: .35rem;
}
.product-card .pc-name {
  font-size: 1.05rem; font-weight: 700;
  color: var(--c-text);
  margin-bottom: .35rem;
  letter-spacing: .02em;
}
.product-card .pc-desc {
  font-size: .8rem; color: var(--c-text-sec);
  line-height: 1.55; margin-bottom: 1rem;
}
.product-card .pc-foot {
  display: flex; align-items: center; justify-content: space-between;
}
.product-card .pc-price {
  font-size: 1.3rem; font-weight: 900;
  color: var(--c-gold);
  letter-spacing: .02em;
}
.product-card .pc-price .pc-price-orig {
  font-size: .75rem; color: var(--c-text-muted);
  text-decoration: line-through;
  margin-left: .4rem;
  font-weight: 400;
}
.product-card .pc-btn {
  padding: .45rem 1rem;
  border: 1px solid var(--c-gold);
  border-radius: var(--radius);
  background: transparent;
  color: var(--c-gold);
  font-family: var(--font-body);
  font-size: .78rem; cursor: pointer;
  letter-spacing: .04em;
  transition: all .25s;
}
.product-card .pc-btn:hover {
  background: var(--c-gold);
  color: var(--c-bg);
}
.product-card .pc-btn.in-cart {
  background: var(--c-gold-dim);
  border-color: var(--c-gold-dim);
  color: var(--c-bg);
}

/* --- 16. Cart FAB --- */
.cart-fab {
  position: fixed; bottom: 2rem; right: 2rem; z-index: 500;
  width: 52px; height: 52px; border-radius: 50%;
  background: var(--c-gold);
  color: var(--c-bg);
  border: none; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 20px rgba(0,0,0,.4);
  transition: transform .25s var(--ease-out), box-shadow .25s;
}
.cart-fab:hover {
  transform: scale(1.08);
  box-shadow: 0 6px 28px rgba(0,0,0,.5);
}
.cart-count {
  position: absolute; top: -4px; right: -4px;
  min-width: 20px; height: 20px; border-radius: 10px;
  background: #e05050; color: #fff;
  font-size: .72rem; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  padding: 0 4px;
}

/* --- 17. Cart Sidebar --- */
.cart-overlay {
  position: fixed; inset: 0; z-index: 600;
  background: rgba(0,0,0,.55);
  opacity: 0; pointer-events: none;
  transition: opacity .3s;
}
.cart-overlay.open {
  opacity: 1; pointer-events: auto;
}
.cart-sidebar {
  position: fixed; top: 0; right: 0; bottom: 0; z-index: 601;
  width: 380px; max-width: 90vw;
  background: var(--c-bg-alt);
  border-left: 1px solid var(--c-border);
  display: flex; flex-direction: column;
  transform: translateX(100%);
  transition: transform .35s var(--ease-out);
  box-shadow: -4px 0 30px rgba(0,0,0,.4);
}
.cart-sidebar.open {
  transform: translateX(0);
}
.cart-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--c-border);
}
.cart-header h3 {
  font-size: 1.1rem; letter-spacing: .04em;
}
.cart-close {
  background: none; border: none; color: var(--c-text-muted);
  cursor: pointer; padding: 4px;
  transition: color .25s;
}
.cart-close:hover { color: var(--c-text); }
.cart-body {
  flex: 1; overflow-y: auto; padding: 1.25rem 1.5rem;
}
.cart-empty {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: 3rem 0; text-align: center;
}
.cart-empty p {
  margin-top: 1rem; font-size: .95rem; color: var(--c-text-sec);
}
.cart-empty span {
  font-size: .8rem; color: var(--c-text-muted); margin-top: .25rem;
}
.cart-items {
  display: flex; flex-direction: column; gap: .75rem;
}
.cart-item {
  display: flex; align-items: center; gap: .75rem;
  padding: .75rem;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
}
.cart-item-icon {
  font-size: 1.6rem; flex-shrink: 0; width: 40px; text-align: center;
  display: flex; align-items: center; justify-content: center;
}
.cart-item-icon .pc-svg-icon {
  width: 36px; height: 36px;
}
.cart-item-info {
  flex: 1; min-width: 0;
}
.cart-item-name {
  font-size: .85rem; color: var(--c-text); font-weight: 500;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.cart-item-price {
  font-size: .8rem; color: var(--c-gold); font-weight: 700;
}
.cart-item-qty {
  display: flex; align-items: center; gap: .35rem;
}
.cart-item-qty button {
  width: 24px; height: 24px; border-radius: 50%;
  border: 1px solid var(--c-border);
  background: var(--c-surface);
  color: var(--c-text-sec);
  font-size: .85rem; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: all .2s;
}
.cart-item-qty button:hover {
  border-color: var(--c-gold-dim); color: var(--c-gold);
}
.cart-item-qty span {
  font-size: .85rem; color: var(--c-text); min-width: 20px; text-align: center;
}
.cart-item-remove {
  background: none; border: none; color: var(--c-text-muted);
  cursor: pointer; font-size: 1.1rem; padding: 2px;
  transition: color .25s;
}
.cart-item-remove:hover { color: #e05050; }
.cart-footer {
  padding: 1.25rem 1.5rem; border-top: 1px solid var(--c-border);
}
.cart-total {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 1rem;
  font-size: .95rem; color: var(--c-text-sec);
}
.cart-total-price {
  font-size: 1.2rem; font-weight: 900; color: var(--c-gold);
}
.btn-checkout {
  width: 100%; padding: .75rem;
  background: var(--c-gold);
  color: var(--c-bg);
  border: none; border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: .95rem; font-weight: 700;
  letter-spacing: .06em; cursor: pointer;
  transition: background .25s, transform .2s;
}
.btn-checkout:hover {
  background: var(--c-gold-bright);
  transform: translateY(-1px);
}

/* --- 18. Checkout Modal --- */
.checkout-modal {
  position: fixed; inset: 0; z-index: 700;
  display: flex; align-items: center; justify-content: center;
  pointer-events: none; opacity: 0;
  transition: opacity .3s;
}
.checkout-modal.open {
  pointer-events: auto; opacity: 1;
}
.checkout-backdrop {
  position: absolute; inset: 0;
  background: rgba(0,0,0,.65);
}
.checkout-dialog {
  position: relative; width: 460px; max-width: 94vw; max-height: 85vh;
  background: var(--c-bg-alt);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0,0,0,.5);
}
.checkout-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--c-border);
}
.checkout-head h3 {
  font-size: 1.05rem; letter-spacing: .04em;
}
.checkout-close-btn, .checkout-back-btn {
  background: none; border: none; color: var(--c-text-muted);
  cursor: pointer; padding: 4px;
  transition: color .25s;
}
.checkout-close-btn:hover, .checkout-back-btn:hover { color: var(--c-text); }
.checkout-body {
  padding: 1.5rem;
}
.checkout-foot {
  padding: 1.25rem 1.5rem;
  border-top: 1px solid var(--c-border);
}
.order-items {
  display: flex; flex-direction: column; gap: .6rem;
  margin-bottom: 1rem;
}
.order-item {
  display: flex; justify-content: space-between; align-items: center;
  font-size: .85rem;
}
.order-item .oi-name { color: var(--c-text); flex: 1; }
.order-item .oi-qty { color: var(--c-text-muted); margin: 0 .75rem; }
.order-item .oi-sub { color: var(--c-gold); font-weight: 600; white-space: nowrap; }
.order-divider {
  height: 1px; background: var(--c-border);
  margin: .75rem 0;
}
.order-summary-row {
  display: flex; justify-content: space-between;
  font-size: 1.05rem; font-weight: 700;
  color: var(--c-text);
  margin-bottom: 1.25rem;
}
.order-total {
  color: var(--c-gold); font-size: 1.3rem;
}
.order-userinfo {
  margin-top: 1.25rem;
  display: flex; flex-direction: column; gap: .75rem;
}
.order-userinfo h5 {
  font-size: .85rem; color: var(--c-gold); letter-spacing: .04em;
}
.order-notice {
  margin-top: 1rem; font-size: .75rem; color: var(--c-text-muted);
  line-height: 1.6;
}
.btn-pay {
  width: 100%; padding: .8rem;
  background: var(--c-gold);
  color: var(--c-bg);
  border: none; border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: .95rem; font-weight: 700;
  letter-spacing: .06em; cursor: pointer;
  transition: background .25s, transform .2s;
}
.btn-pay:hover {
  background: var(--c-gold-bright);
  transform: translateY(-1px);
}
.pay-amount-display {
  text-align: center; margin-bottom: 1.5rem;
}
.pay-label {
  font-size: .85rem; color: var(--c-text-sec);
  display: block; margin-bottom: .25rem;
}
.pay-amount {
  font-size: 2rem; font-weight: 900; color: var(--c-gold);
}
.pay-methods {
  display: flex; flex-direction: column; gap: .6rem;
  margin-bottom: 1.5rem;
}
.pay-method {
  display: flex; align-items: center; gap: .75rem;
  padding: .75rem 1rem;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  cursor: pointer;
  transition: border-color .25s, background .25s;
}
.pay-method:hover {
  border-color: var(--c-border-light);
}
.pay-method.active {
  border-color: var(--c-gold);
  background: rgba(212,175,55,.08);
}
.pay-method input { display: none; }
.pay-method-icon {
  width: 40px; height: 40px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: var(--c-surface); flex-shrink: 0;
}
.pay-method-name {
  font-size: .9rem; color: var(--c-text); flex: 1;
}
.pay-method-check {
  font-size: .85rem; color: var(--c-gold);
  opacity: 0; transition: opacity .2s;
}
.pay-method.active .pay-method-check { opacity: 1; }
.pay-qr {
  text-align: center; margin-bottom: 1.5rem;
}
.qr-placeholder {
  display: inline-block;
  padding: 1.25rem; background: #fff; border-radius: var(--radius);
  margin-bottom: .75rem;
  box-shadow: 0 2px 12px rgba(0,0,0,.15);
}
.qr-inner { line-height: 0; }
.qr-inner img { display: block; border-radius: 4px; }
.qr-hint {
  font-size: .82rem; color: var(--c-text-sec);
  margin-top: .5rem;
}
.qr-tip {
  font-size: .8rem; color: var(--c-text-muted);
  margin-top: .5rem;
}
.pay-success-icon {
  text-align: center; margin-bottom: 1rem;
}
.pay-success-text {
  text-align: center; font-size: 1.2rem; font-weight: 700;
  color: #2ecc71; margin-bottom: .25rem;
}
.pay-success-sub {
  text-align: center; font-size: .85rem;
  color: var(--c-text-sec);
  margin-bottom: 1.5rem;
}
.order-receipt {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  margin-bottom: 1.5rem;
}
.receipt-row {
  display: flex; justify-content: space-between;
  font-size: .82rem; padding: .4rem 0;
  border-bottom: 1px dashed var(--c-border);
}
.receipt-row:last-child { border-bottom: none; }
.receipt-row span:first-child { color: var(--c-text-muted); }
.receipt-row span:last-child { color: var(--c-text); font-weight: 500; }
.receipt-amount { color: var(--c-gold) !important; font-weight: 700 !important; }
.btn-done {
  width: 100%; padding: .75rem;
  background: #2ecc71; color: #fff;
  border: none; border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: .95rem; font-weight: 700;
  letter-spacing: .06em; cursor: pointer;
  transition: background .25s, transform .2s;
}
.btn-done:hover {
  background: #27ae60;
  transform: translateY(-1px);
}

/* --- 19. Responsive --- */
@media(max-width:768px){
  .nav-links{display:none}
  .hamburger{display:flex}
  .nav-mobile{display:flex}

  .hero-title{letter-spacing:.04em}
  .hero-decor{opacity:.15}

  .modes-grid{grid-template-columns:1fr}
  .features-grid{grid-template-columns:repeat(2,1fr)}
  .footer-inner{grid-template-columns:1fr;text-align:center}
  .contact-grid{grid-template-columns:1fr}
  .coop-form{grid-template-columns:1fr}
}
@media(max-width:480px){
  .features-grid{grid-template-columns:1fr}
  .section{padding-left:1rem;padding-right:1rem}
}