/* ===== ZNQM · 视觉规范（青+品红主轴，降噪，层级清晰） ===== */
:root{
  --bg:#07070f;
  --bg-2:#0b0b18;
  --card:rgba(16,18,34,.66);
  --card-brd:rgba(0,229,255,.16);
  --cyan:#00e5ff;
  --magenta:#ff3df0;
  --txt:#e8ebf5;
  --txt-2:#9aa0bf;
  --ok:#37e6a0;
  --err:#ff5a72;
  --radius:16px;
  --mono:'JetBrains Mono','Courier New',monospace;
  --sans:'PingFang SC','Microsoft YaHei','Segoe UI',system-ui,sans-serif;
  --shadow:0 20px 60px rgba(0,0,0,.45);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:radial-gradient(1200px 800px at 70% -10%,rgba(255,61,240,.10),transparent 60%),
             radial-gradient(1000px 700px at 10% 10%,rgba(0,229,255,.10),transparent 55%),
             var(--bg);
  color:var(--txt);font-family:var(--sans);line-height:1.7;
  overflow-x:hidden;min-height:100vh;-webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}

/* 背景层（克制） */
.grid-bg{position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.5;
  background-image:linear-gradient(rgba(0,229,255,.05) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(0,229,255,.05) 1px,transparent 1px);
  background-size:54px 54px;mask-image:radial-gradient(circle at 50% 30%,#000 0%,transparent 80%)}
#particles-canvas{position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.55}
.scanlines{position:fixed;inset:0;z-index:1;pointer-events:none;opacity:.35;
  background:repeating-linear-gradient(0deg,transparent 0 3px,rgba(0,229,255,.025) 3px 4px)}

/* NAV */
.nav{position:fixed;top:0;left:0;right:0;z-index:1000;display:flex;align-items:center;justify-content:space-between;
  height:62px;padding:0 28px;background:rgba(7,7,15,.72);backdrop-filter:blur(16px);
  border-bottom:1px solid var(--card-brd)}
.nav-logo{font-family:var(--mono);font-weight:800;font-size:1.4rem;letter-spacing:3px;color:var(--cyan);
  text-shadow:0 0 18px rgba(0,229,255,.45);position:relative}
.nav-links{display:flex;gap:26px;list-style:none;align-items:center}
.nav-links a{color:var(--txt-2);font-size:.95rem;transition:.2s;position:relative}
.nav-links a:hover{color:var(--txt)}
.nav-links a:not(.nav-gh)::after{content:'';position:absolute;left:0;bottom:-6px;width:0;height:2px;background:var(--cyan);transition:.2s}
.nav-links a:not(.nav-gh):hover::after{width:100%}
.nav-gh{border:1px solid var(--card-brd);padding:6px 12px;border-radius:999px;color:var(--cyan)!important}
.nav-gh:hover{border-color:var(--cyan);box-shadow:0 0 18px rgba(0,229,255,.25)}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.nav-toggle span{width:24px;height:2px;background:var(--txt);border-radius:2px;transition:.25s}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* HERO */
.hero{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;
  position:relative;z-index:2;padding:90px 20px 40px}
.hero-inner{max-width:820px}
.badge{display:inline-block;font-family:var(--mono);font-size:.8rem;letter-spacing:1px;color:var(--cyan);
  border:1px solid var(--card-brd);padding:6px 14px;border-radius:999px;margin-bottom:22px;
  background:rgba(0,229,255,.06)}
.hero h1{font-family:var(--mono);font-size:clamp(3.4rem,12vw,7rem);font-weight:900;letter-spacing:8px;line-height:1;
  background:linear-gradient(90deg,var(--cyan),var(--magenta));-webkit-background-clip:text;background-clip:text;color:transparent;
  filter:drop-shadow(0 0 30px rgba(0,229,255,.35))}
.hero-sub{font-size:1.2rem;color:var(--txt);margin-top:6px;letter-spacing:4px}
.hero-desc{color:var(--txt-2);margin:18px auto 0;max-width:560px}
.hero-cta{display:flex;gap:14px;justify-content:center;margin-top:30px;flex-wrap:wrap}
.hero-stats{display:flex;gap:34px;justify-content:center;margin-top:46px;flex-wrap:wrap}
.stat b{display:block;font-family:var(--mono);font-size:1.7rem;color:var(--cyan)}
.stat span{font-size:.82rem;color:var(--txt-2)}
.scroll-hint{position:absolute;bottom:22px;left:50%;transform:translateX(-50%);color:var(--txt-2);animation:bob 1.8s ease-in-out infinite}
@keyframes bob{0%,100%{transform:translate(-50%,0)}50%{transform:translate(-50%,8px)}}

/* glitch（仅标题） */
.glitch{position:relative}
.glitch::before,.glitch::after{content:attr(data-text);position:absolute;inset:0;
  background:linear-gradient(90deg,var(--cyan),var(--magenta));-webkit-background-clip:text;background-clip:text;color:transparent;opacity:.0}
.glitch:hover::before{opacity:.6;animation:gl1 .5s steps(2) infinite;clip-path:inset(0 0 60% 0)}
.glitch:hover::after{opacity:.6;animation:gl2 .5s steps(2) infinite;clip-path:inset(60% 0 0 0)}
@keyframes gl1{0%{transform:translate(0)}50%{transform:translate(-3px,1px)}100%{transform:translate(2px,-1px)}}
@keyframes gl2{0%{transform:translate(0)}50%{transform:translate(3px,-1px)}100%{transform:translate(-2px,1px)}}

/* BUTTONS */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 22px;border-radius:12px;
  font-size:.95rem;font-weight:600;cursor:pointer;border:1px solid transparent;transition:.2s;font-family:var(--sans)}
.btn-primary{background:linear-gradient(120deg,var(--cyan),#23b5ff);color:#04121a;box-shadow:0 8px 26px rgba(0,229,255,.28)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 34px rgba(0,229,255,.4)}
.btn-primary:disabled{opacity:.55;cursor:not-allowed;transform:none;box-shadow:none}
.btn-ghost{background:rgba(255,255,255,.04);border-color:var(--card-brd);color:var(--txt)}
.btn-ghost:hover{border-color:var(--cyan);color:var(--cyan)}

/* SECTION */
.section{position:relative;z-index:2;max-width:1080px;margin:0 auto;padding:84px 22px}
.section-head{text-align:center;margin-bottom:38px}
.section-head h2{font-size:clamp(1.8rem,4vw,2.6rem);letter-spacing:2px}
.section-head p{color:var(--txt-2);margin-top:8px}

/* GEN CARD */
.gen-card{background:var(--card);border:1px solid var(--card-brd);border-radius:var(--radius);
  box-shadow:var(--shadow);backdrop-filter:blur(14px);overflow:hidden}
.gen-tabs{display:flex;gap:6px;padding:12px 12px 0;border-bottom:1px solid var(--card-brd)}
.gen-tab{flex:1;padding:14px 10px;background:transparent;border:0;color:var(--txt-2);font-size:1rem;font-weight:600;
  cursor:pointer;border-radius:12px 12px 0 0;position:relative;transition:.2s;font-family:var(--sans)}
.gen-tab:hover{color:var(--txt)}
.gen-tab.active{color:var(--cyan)}
.gen-tab.active::after{content:'';position:absolute;left:18%;right:18%;bottom:-1px;height:2px;background:var(--cyan);box-shadow:0 0 12px var(--cyan)}
.gen-panel{display:none;padding:26px}
.gen-panel.active{display:block;animation:fade .3s ease}
@keyframes fade{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.gen-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.gen-left{display:flex;flex-direction:column;gap:14px}
.row{display:flex;gap:12px}
.row .prompt,.row .select{flex:1}
.select{background:rgba(255,255,255,.04);border:1px solid var(--card-brd);color:var(--txt);border-radius:10px;padding:11px 12px;font-size:.92rem;font-family:var(--sans)}
.select:focus{outline:none;border-color:var(--cyan)}
.prompt{width:100%;background:rgba(255,255,255,.04);border:1px solid var(--card-brd);color:var(--txt);border-radius:10px;
  padding:12px;font-size:.95rem;font-family:var(--sans);resize:vertical;line-height:1.6}
.prompt:focus{outline:none;border-color:var(--cyan);box-shadow:0 0 0 3px rgba(0,229,255,.12)}
.prompt-meta{font-size:.78rem;color:var(--txt-2);text-align:right;margin-top:-8px}
.hint{font-size:.8rem;color:var(--txt-2)}

/* DROPZONE */
.dropzone{border:1.5px dashed var(--card-brd);border-radius:14px;min-height:150px;display:flex;align-items:center;justify-content:center;
  text-align:center;color:var(--txt-2);cursor:pointer;transition:.2s;position:relative;padding:16px;background:rgba(255,255,255,.02)}
.dropzone:hover{border-color:var(--cyan);color:var(--txt);background:rgba(0,229,255,.05)}
.dropzone.drag{border-color:var(--magenta);background:rgba(255,61,240,.08)}
.dz-empty{font-size:.92rem;padding:10px}
.dz-preview{position:relative;width:100%}
.dz-preview img{border-radius:10px;max-height:240px;margin:0 auto;object-fit:contain}
.dz-preview.multi{display:flex;flex-wrap:wrap;gap:8px;justify-content:center}
.dz-preview.multi img{width:84px;height:84px;object-fit:cover;border-radius:8px}
.dz-remove{position:absolute;top:6px;right:6px;width:26px;height:26px;border-radius:50%;border:0;background:rgba(0,0,0,.6);
  color:#fff;cursor:pointer;font-size:.9rem}

/* RESULT */
.gen-right{min-height:200px}
.result{background:rgba(0,0,0,.25);border:1px solid var(--card-brd);border-radius:14px;min-height:260px;display:flex;
  align-items:center;justify-content:center;padding:14px;position:relative;overflow:hidden}
.result-empty{color:var(--txt-2);font-size:.9rem}
.result img,.result video{max-width:100%;max-height:460px;border-radius:10px;box-shadow:0 10px 30px rgba(0,0,0,.4)}
.result-actions{position:absolute;top:10px;right:10px;display:flex;gap:8px}
.result-actions button{border:1px solid var(--card-brd);background:rgba(7,7,15,.8);color:var(--txt);border-radius:9px;
  padding:7px 12px;font-size:.82rem;cursor:pointer;backdrop-filter:blur(6px);transition:.2s}
.result-actions button:hover{border-color:var(--cyan);color:var(--cyan)}
.skeleton{position:absolute;inset:14px;border-radius:10px;background:linear-gradient(100deg,rgba(255,255,255,.04),rgba(0,229,255,.08),rgba(255,255,255,.04));background-size:200% 100%;animation:sk 1.2s infinite}
@keyframes sk{0%{background-position:200% 0}100%{background-position:-200% 0}}

/* GALLERY */
.gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:18px}
.g-card{position:relative;border-radius:14px;overflow:hidden;border:1px solid var(--card-brd);background:#000;cursor:pointer;aspect-ratio:4/5}
.g-card img{width:100%;height:100%;object-fit:cover;transition:.4s}
.g-card:hover img{transform:scale(1.06)}
.g-card .g-type{position:absolute;top:10px;left:10px;font-family:var(--mono);font-size:.7rem;padding:4px 8px;border-radius:999px;
  background:rgba(7,7,15,.7);border:1px solid var(--card-brd);color:var(--cyan)}
.g-card .g-over{position:absolute;inset:auto 0 0 0;padding:14px;background:linear-gradient(transparent,rgba(0,0,0,.85));
  opacity:0;transform:translateY(8px);transition:.3s}
.g-card:hover .g-over{opacity:1;transform:none}
.g-over .g-prompt{font-size:.85rem;color:#fff;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.g-over .g-btn{margin-top:8px;display:inline-block;font-size:.78rem;color:var(--cyan);border:1px solid var(--cyan);padding:5px 10px;border-radius:8px}

/* ABOUT */
.about-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px}
.about-card{background:var(--card);border:1px solid var(--card-brd);border-radius:14px;padding:22px;backdrop-filter:blur(10px)}
.about-card h3{color:var(--cyan);font-size:1.05rem;margin-bottom:12px;font-family:var(--mono);letter-spacing:1px}
.about-card ul{list-style:none;display:flex;flex-direction:column;gap:9px}
.about-card li{color:var(--txt-2);font-size:.92rem;padding-left:16px;position:relative}
.about-card li::before{content:'▹';position:absolute;left:0;color:var(--magenta)}
.about-card a{color:var(--cyan)}

/* FOOTER */
.footer{position:relative;z-index:2;border-top:1px solid var(--card-brd);margin-top:40px;padding:28px 22px;
  display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;color:var(--txt-2);font-size:.88rem}
.foot-links{display:flex;gap:18px}
.foot-links a:hover{color:var(--cyan)}

/* TOAST */
.toast-wrap{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);z-index:2000;display:flex;flex-direction:column;gap:10px;align-items:center}
.toast{background:rgba(7,7,15,.92);border:1px solid var(--card-brd);color:var(--txt);padding:12px 18px;border-radius:12px;
  font-size:.9rem;box-shadow:var(--shadow);backdrop-filter:blur(10px);animation:tin .25s ease;max-width:90vw}
.toast.ok{border-color:rgba(55,230,160,.5)}
.toast.err{border-color:rgba(255,90,114,.6)}
@keyframes tin{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}

/* RESPONSIVE */
@media (max-width:820px){
  .gen-grid{grid-template-columns:1fr}
  .nav-links{position:fixed;top:62px;right:0;flex-direction:column;background:rgba(7,7,15,.96);backdrop-filter:blur(16px);
    width:230px;padding:18px;gap:18px;border-left:1px solid var(--card-brd);border-bottom:1px solid var(--card-brd);
    transform:translateX(110%);transition:.28s}
  .nav-links.open{transform:none}
  .nav-toggle{display:flex}
}
@media (prefers-reduced-motion: reduce){
  *{animation:none!important;scroll-behavior:auto!important}
  .grid-bg{display:none}
  #particles-canvas{display:none}
}