:root {
  --bg: #f5f5f7;
  --bg-soft: #fbfbfd;
  --fg: #1d1d1f;
  --fg-soft: #6e6e73;
  --fg-muted: #9aa1ab;
  --blue: #0071e3;
  --blue-h: #0077ed;
  --red: #d11719;
  --green: #1d8b4c;
  --line: rgba(0,0,0,.08);
  --line-strong: rgba(0,0,0,.1);
  --shadow: 0 18px 50px rgba(0,0,0,.06);
  --shadow-soft: 0 8px 24px rgba(0,0,0,.03);
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Display","SF Pro Text","Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  --mono: ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --nav-h: 48px;
  --r: 14px;
  --rs: 10px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;min-height:100vh;
  font-family:var(--font);color:var(--fg);font-size:14px;line-height:1.4706;
  background:var(--bg);
  -webkit-font-smoothing:antialiased;overflow-x:hidden
}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline;text-underline-offset:3px}
code,.mono{font-family:var(--mono);letter-spacing:-.01em}

/* ——— Page transition (CSS only, instant) ——— */
body{opacity:1;transform:none;transition:opacity .09s ease-out,transform .09s ease-out}
body[style*="--pt:leave"]{opacity:0!important;transform:scale(1.02)!important}
body[style*="--pt:enter"]{animation:pt-in .3s cubic-bezier(.16,1,.3,1) both}
@keyframes pt-in{from{opacity:0;transform:scale(.99)}to{opacity:1;transform:none}}

/* ========== HOMEPAGE (apple.com style) ========== */

/* Language switch */
.lang-switch{display:flex;align-items:center;gap:0;margin:0 2px}
.lang-btn{appearance:none;border:0;background:transparent;color:var(--fg-soft);font:inherit;font-size:11px;font-weight:500;min-height:24px;min-width:24px;padding:0 4px;border-radius:4px;cursor:pointer;transition:color .15s ease}
.lang-btn:hover{color:var(--fg)}
.lang-btn.is-active{color:var(--fg);font-weight:600}

/* Hero */
.ah-hero{text-align:center;padding:100px 20px 50px;background:var(--bg-soft);border-bottom:1px solid var(--line)}
.ah-hero h1{font-size:clamp(36px,6vw,64px);line-height:1.06;letter-spacing:-.03em;font-weight:700;margin:0 0 16px;color:#000}
.ah-hero-p{font-size:clamp(17px,2vw,22px);color:var(--fg-soft);max-width:560px;margin:0 auto 32px;line-height:1.4}
.ah-hero-p code{background:rgba(0,0,0,.04);padding:2px 8px;border-radius:4px;font-size:.9em}
.ah-hero-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.ah-btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 20px;border-radius:980px;background:var(--blue);color:#fff;font-size:14px;font-weight:500;text-decoration:none;transition:background .2s ease,transform .1s ease}
.ah-btn:hover{background:var(--blue-h);text-decoration:none}
.ah-btn:active{transform:scale(.97)}
.ah-btn-ghost{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 20px;border-radius:980px;color:var(--blue);font-size:14px;font-weight:500;text-decoration:none;transition:background .15s ease}
.ah-btn-ghost:hover{background:rgba(0,113,227,.08);text-decoration:none}

.ah-hero-visual{max-width:620px;margin:36px auto 0}
.ah-window{border:1px solid var(--line);border-radius:14px;overflow:hidden;background:#fff;box-shadow:0 18px 60px rgba(0,0,0,.06)}
.ah-window-bar{display:flex;align-items:center;gap:6px;padding:10px 12px;background:#fafafa;border-bottom:1px solid var(--line)}
.ah-dot{width:8px;height:8px;border-radius:50%}
.ah-dot:nth-child(1){background:#ff5f57}
.ah-dot:nth-child(2){background:#febc2e}
.ah-dot:nth-child(3){background:#28c840}
.ah-url{margin-left:8px;padding:4px 10px;border-radius:6px;background:rgba(0,0,0,.03);color:var(--fg-soft);font-size:11px;font-family:var(--mono);flex:1;text-align:left}
.ah-window-body{padding:28px 24px;background:linear-gradient(180deg,#fafbfc,#f0f1f3)}
.ah-lines{display:grid;gap:10px;margin-bottom:18px}
.ah-lines span{height:10px;border-radius:999px;background:linear-gradient(90deg,rgba(0,0,0,.06),rgba(0,0,0,.02))}
.ah-lines span:nth-child(1){width:78%}
.ah-lines span:nth-child(2){width:55%}
.ah-lines span:nth-child(3){width:90%}
.ah-lines span:nth-child(4){width:40%}
.ah-lines span:nth-child(5){width:70%}
.ah-badge{display:inline-flex;padding:8px 14px;border-radius:980px;background:rgba(29,29,31,.06);color:var(--fg-soft);font-size:12px;font-weight:500;font-family:var(--mono)}

/* Sections */
.ah-section{padding:48px 20px;max-width:900px;margin:0 auto}
.ah-section-head{text-align:center;margin-bottom:32px}
.ah-section-head h2{font-size:clamp(28px,4vw,40px);letter-spacing:-.025em;font-weight:700;line-height:1.08;margin:0 0 8px}
.ah-section-head p{margin:0;color:var(--fg-soft);font-size:16px}
.ah-grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.ah-card{padding:24px 20px;border-radius:14px;background:#fff;border:1px solid var(--line);box-shadow:0 4px 16px rgba(0,0,0,.02);transition:transform .2s ease,box-shadow .2s ease}
.ah-card:hover{transform:translateY(-3px);box-shadow:0 8px 24px rgba(0,0,0,.04)}
.ah-icon{display:inline-flex;width:40px;height:40px;border-radius:10px;background:rgba(0,113,227,.1);color:var(--blue);align-items:center;justify-content:center;margin-bottom:12px}
.ah-card h3{font-size:17px;font-weight:600;margin:0 0 6px;letter-spacing:-.01em}
.ah-card p{margin:0;color:var(--fg-soft);font-size:13px;line-height:1.4}
.ah-card code{font-size:.9em;background:rgba(0,0,0,.04);padding:1px 5px;border-radius:3px}
.ah-flow{text-align:center}
.ah-flow p{margin:0;color:var(--fg-soft);font-size:13px}
.ah-step{display:block;font-size:34px;font-weight:700;letter-spacing:-.03em;margin-bottom:8px;color:var(--blue)}
.ah-metrics{max-width:900px;margin:0 auto;padding:32px 20px 48px;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;text-align:center}
.ah-metrics strong{display:block;font-size:clamp(32px,4vw,44px);letter-spacing:-.03em;font-weight:700;line-height:1;margin-bottom:4px}
.ah-metrics span{color:var(--fg-soft);font-size:13px}
.ah-finale{text-align:center;padding:60px 20px;background:#000;color:#fff}
.ah-finale h2{font-size:clamp(28px,4vw,44px);letter-spacing:-.025em;font-weight:700;margin:0 0 10px;color:#f5f5f7}
.ah-finale p{color:rgba(255,255,255,.7);font-size:16px;margin:0 0 24px}
.ah-finale .ah-btn{background:#fff;color:#000;min-height:46px;padding:0 24px;font-size:15px;font-weight:600}
.ah-finale .ah-btn:hover{background:#e8e8ed}
.ah-footer,.apple-footer{border-top:1px solid var(--line);color:var(--fg-soft);font-size:11px;padding:12px 0 20px}
.ah-footer-inner,.apple-footer-inner{width:min(980px,calc(100% - 32px));margin:0 auto;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}
.ah-footer a,.apple-footer a{color:var(--fg-soft);margin-left:10px}
.ah-footer a:hover,.apple-footer a:hover{color:var(--fg)}

/* ========== SHARED COMPONENTS (admin/account/upload pages) ========== */

/* Page veil is unused (CSS-only transition) */

/* Apple-style shared nav */
.apple-nav,.ah-nav{position:fixed;top:0;left:0;right:0;z-index:100;height:var(--nav-h);background:rgba(251,251,253,.88);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-bottom:1px solid var(--line)}
.apple-nav-inner,.ah-nav-inner{width:min(980px,calc(100% - 24px));height:100%;margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:8px}
.nav-logo,.ah-logo{color:var(--fg);font-weight:600;font-size:14px;white-space:nowrap;letter-spacing:-.01em}
.nav-logo:hover,.ah-logo:hover{text-decoration:none;opacity:.75}
.nav-menu,.ah-nav-right{display:flex;align-items:center;gap:4px}
.nav-menu a:not(.nav-pill),.ah-nav-link{color:var(--fg-soft);font-size:12px;font-weight:500;padding:4px 10px;border-radius:4px;transition:color .15s ease}
.nav-menu a.is-active,.nav-menu a:not(.nav-pill):hover,.ah-nav-link:hover{color:var(--fg);text-decoration:none}
.nav-pill,.ah-cta{display:inline-flex;align-items:center;min-height:30px;padding:0 12px;border-radius:980px;background:var(--fg);color:#fff!important;font-size:12px;font-weight:500}
.nav-pill:hover,.ah-cta:hover{background:#000;text-decoration:none}
.nav-toggle{display:none;appearance:none;border:0;background:transparent;width:34px;height:34px;cursor:pointer;border-radius:8px;flex-direction:column;align-items:center;justify-content:center;gap:5px}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:1px;background:var(--fg)}
@media(max-width:720px){
  .nav-toggle{display:flex}
  .nav-menu{position:fixed;top:calc(var(--nav-h) + 12px);left:12px;right:12px;flex-direction:column;align-items:stretch;gap:2px;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:6px;box-shadow:var(--shadow);opacity:0;pointer-events:none;transition:opacity .2s ease,transform .2s ease;transform:translateY(-8px)}
  .nav-menu.is-open{opacity:1;pointer-events:auto;transform:none}
  .nav-menu a:not(.nav-pill){padding:12px 14px;font-size:14px}
}

/* Buttons */
.button{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:38px;min-width:90px;padding:0 14px;border:0;border-radius:980px;background:var(--blue);color:#fff;font-size:13px;font-weight:500;cursor:pointer;transition:background .2s ease,transform .1s ease}
.button:hover{background:var(--blue-h);text-decoration:none}
.button:active{transform:scale(.97)}
.button.secondary{background:rgba(0,0,0,.05);color:var(--fg)}
.button.secondary:hover{background:rgba(0,0,0,.08)}
.button.small{min-height:30px;min-width:auto;padding:0 12px;font-size:12px}
.button.danger,.danger{background:var(--red);color:#fff}
.button.danger:hover{background:#b31214}

/* Layout */
.page{width:min(920px,calc(100% - 32px));margin:0 auto;padding:40px 0 60px}
.app-main{padding-top:calc(var(--nav-h) + 28px)}
.hero{margin-bottom:24px}
.hero h1{margin:8px 0 6px;font-size:clamp(28px,4.6vw,40px);letter-spacing:-.025em;font-weight:700;line-height:1.1}
.badge{display:inline-flex;align-items:center;min-height:26px;padding:0 10px;border-radius:980px;background:rgba(0,113,227,.1);color:var(--blue);font-size:12px;font-weight:600}
.lead{margin:0;color:var(--fg-soft);font-size:15px;max-width:38rem;line-height:1.45}
.footer{margin-top:16px;color:var(--fg-soft);font-size:12px}

/* Card */
.card{background:rgba(255,255,255,.88);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow);padding:24px}

/* Form */
.form-grid{display:grid;gap:14px}
label{display:block;margin-bottom:4px;font-weight:600;font-size:13px}
.help{margin:6px 0 0;color:var(--fg-soft);font-size:12px;line-height:1.35}
.file-input,.link-input{width:100%;min-height:42px;padding:0 14px;border:1px solid var(--line-strong);border-radius:var(--rs);background:rgba(255,255,255,.8);color:var(--fg);font-size:13px}
.file-input{border-style:dashed;padding:12px 14px;min-height:48px}
.actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:4px}

/* Upload page specifics */
.upload-shell{width:min(720px,calc(100% - 32px));margin:0 auto;padding:calc(var(--nav-h) + 32px) 0 60px}
.narrow{width:min(720px,calc(100% - 32px))!important}
.drop-zone{position:relative;border:1px dashed var(--line-strong);border-radius:var(--rs);padding:20px;text-align:center;display:grid;gap:6px;background:rgba(255,255,255,.4);transition:border-color .2s ease}
.drop-zone:hover{border-color:var(--blue)}
.drop-zone input[type=file]{position:absolute;inset:0;opacity:0;cursor:pointer}
.drop-zone strong{font-size:13px;font-weight:600}
.drop-icon i{width:20px;height:20px;color:var(--blue)}
.file-summary{display:none;align-items:center;gap:12px;padding:8px 12px;background:rgba(0,0,0,.02);border-radius:var(--rs);font-size:13px}
.file-summary.is-visible{display:flex}
.icon-button{appearance:none;border:0;background:transparent;cursor:pointer;color:var(--fg-soft);padding:4px;border-radius:6px}
.icon-button:hover{background:rgba(0,0,0,.04)}

/* Alert */
.alert{margin-bottom:14px;padding:10px 14px;border-radius:var(--rs);border:1px solid transparent;font-size:13px}
.alert.error{background:#fef2f2;border-color:#fecaca;color:var(--red)}
.alert.success{background:#f0fdf4;border-color:#bbf7d0;color:var(--green)}
.result-grid{display:grid;gap:14px}
.meta{display:grid;gap:8px;color:var(--fg-soft);font-size:13px}
.link-row{display:grid;gap:10px}

/* Stats / Table */
.toolbar,.stats,.search-bar,.bulk-bar{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-bottom:12px}
.toolbar{justify-content:space-between}
.stat{background:rgba(255,255,255,.88);border:1px solid var(--line);border-radius:var(--rs);padding:12px 14px;min-width:120px}
.stat strong{display:block;font-size:18px;line-height:1.2;letter-spacing:-.02em}
.stat span{color:var(--fg-soft);font-size:11px}
.table-wrap{overflow-x:auto}
table{width:100%;border-collapse:collapse;font-size:13px}
th,td{padding:10px 8px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
th{color:var(--fg-soft);font-size:11px;font-weight:600;white-space:nowrap;text-transform:uppercase;letter-spacing:.02em}
.muted{color:var(--fg-soft)}
.login-box{max-width:400px}
.cell-actions,.row-actions{display:flex;gap:6px;flex-wrap:wrap;align-items:center}
.link-cell{min-width:200px}
.check-col{width:36px}
.replace-box{display:none;margin-top:8px;gap:8px;flex-wrap:wrap;align-items:center}
.replace-box.open{display:flex}
.create-grid{display:grid;grid-template-columns:1fr 1fr auto;gap:12px;align-items:end}
.compact-input{min-height:30px!important;font-size:12px!important;padding:0 10px!important;width:110px!important}
.badge-soft{display:inline-block;padding:2px 8px;border-radius:999px;font-size:11px;background:rgba(0,113,227,.1);color:var(--blue)}
.badge-off{background:#fef2f2;color:var(--red)}
.empty-state{padding:24px 0;text-align:center;color:var(--fg-soft)}
.inline-form{display:inline}
.card-head{margin-bottom:14px}
.card-head h2{margin:0;font-size:17px;font-weight:600}

/* Confirm */
.confirm-layer{position:fixed;inset:0;z-index:2000;display:grid;place-items:center;background:rgba(0,0,0,.2);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);opacity:0;pointer-events:none;transition:opacity .2s ease}
.confirm-layer.is-open{opacity:1;pointer-events:auto}
.confirm-dialog{background:rgba(255,255,255,.96);border-radius:var(--r);padding:24px;max-width:380px;width:90vw;text-align:center;box-shadow:0 20px 60px rgba(0,0,0,.08)}
.confirm-dialog h2{margin:0 0 8px;font-size:18px;font-weight:600}
.confirm-dialog p{margin:0 0 18px;color:var(--fg-soft);font-size:14px}
.confirm-dialog .actions{display:flex;gap:10px;justify-content:center}
.confirm-dialog .button{min-width:90px}

/* Glass switch (for nav-menu) */
.glass-switch{--p:3px;--w:32px;position:relative;display:inline-grid;grid-auto-flow:column;grid-auto-columns:var(--w);align-items:center;padding:var(--p);border-radius:980px;background:rgba(0,0,0,.04);gap:0;overflow:hidden}
.lang-glider{position:absolute;top:var(--p);left:var(--p);width:var(--w);height:calc(100% - (var(--p)*2));border-radius:980px;background:#fff;box-shadow:0 2px 6px rgba(0,0,0,.08);transform:translateX(calc(var(--lang-index,0)*var(--w)));transition:transform .28s cubic-bezier(.34,.69,.1,1);z-index:0}

/* Reveal */
[data-reveal]{opacity:0;transform:translateY(12px);transition:opacity .5s ease,transform .5s ease}
[data-reveal].is-in{opacity:1;transform:none}

/* ========== Upload success page (apple-design) ========== */
.success-hero{display:flex;flex-direction:column;align-items:center;text-align:center;gap:10px;margin-bottom:28px}
.success-hero .badge{order:2}
.success-hero h1{order:3;margin:6px 0 0;font-size:clamp(30px,5vw,46px);letter-spacing:-.025em;font-weight:700;line-height:1.1}
.success-hero .lead{order:4;margin:6px auto 0;max-width:34rem}
.success-check{
  order:1;width:56px;height:56px;border-radius:50%;
  display:grid;place-items:center;color:#fff;background:var(--blue);
  box-shadow:0 8px 24px rgba(0,113,227,.28);
  animation:success-pop .5s cubic-bezier(.16,1,.3,1) both;
}
.success-check i{width:28px;height:28px;stroke-width:2.6}
@keyframes success-pop{
  0%{opacity:0;transform:scale(.4)}
  60%{opacity:1;transform:scale(1.06)}
  100%{opacity:1;transform:scale(1)}
}
.success-card{background:rgba(255,255,255,.72);-webkit-backdrop-filter:saturate(180%) blur(20px);backdrop-filter:saturate(180%) blur(20px);border:1px solid var(--line);box-shadow:0 18px 50px rgba(0,0,0,.06)}
.success-card .alert.success{margin-bottom:18px}
.success-meta{margin:0 0 20px;padding:0;display:grid;gap:2px;border-top:1px solid var(--line)}
.success-meta .meta-row{display:grid;grid-template-columns:120px minmax(0,1fr);gap:12px;align-items:baseline;padding:11px 0;border-bottom:1px solid var(--line)}
.success-meta dt{color:var(--fg-soft);font-size:12px;font-weight:600}
.success-meta dd{margin:0;color:var(--fg);font-size:13px;word-break:break-all}
.success-meta dd.mono{font-family:var(--mono);letter-spacing:-.01em}
.success-link{display:grid;gap:10px}
.success-link label{font-size:12px;font-weight:600;color:var(--fg-soft);margin-bottom:2px}
.success-actions{margin-top:6px}
.success-actions .button{min-width:auto}
@media(max-width:600px){.success-meta .meta-row{grid-template-columns:1fr;gap:2px}}

/* Copy button feedback state */
.button[data-copy].is-copied{background:var(--green)!important;color:#fff!important}
.button[data-copy].is-copied i{color:#fff}

@media(prefers-reduced-motion:reduce){
  .success-check{animation:none;opacity:1;transform:none}
}

/* Responsive */
@media(max-width:720px){
  .page{width:calc(100% - 20px)}
  .app-main,.upload-shell{padding-top:calc(var(--nav-h) + 20px)}
  .card{padding:18px}
  .stat{min-width:auto;flex:1}
  .stats{flex-wrap:wrap}
  .create-grid{grid-template-columns:1fr}
  .ah-nav-link:not(.ah-cta){display:none}
}

@media(prefers-reduced-motion:reduce){
  body,body[style*="--pt"]{opacity:1!important;transform:none!important;animation:none!important}
  *{animation-duration:0s!important;transition-duration:0s!important}
  [data-reveal]{opacity:1!important;transform:none!important}
}