:root{
  --bg:#eef3fb;
  --bg2:#f8fbff;
  --panel:rgba(255,255,255,.92);
  --panel-strong:#ffffff;
  --ink:#142033;
  --muted:#667085;
  --line:#d7e1f1;
  --accent:#2756d8;
  --accent-2:#123b9f;
  --accent-soft:#eff4ff;
  --danger:#d92d20;
  --ok:#067647;
  --shadow:0 18px 40px rgba(18,39,87,.09);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  background:
    radial-gradient(circle at top left, rgba(72,114,255,.18), transparent 28%),
    radial-gradient(circle at top right, rgba(14,165,233,.16), transparent 24%),
    linear-gradient(180deg, #edf2fb 0%, #f8fbff 100%);
}
a{color:inherit}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size:28px 28px;
  mask-image:linear-gradient(180deg, rgba(0,0,0,.35), transparent 55%);
}
.site-header{
  position:sticky;
  top:0;
  z-index:30;
  display:flex;
  justify-content:space-between;
  gap:18px;
  align-items:center;
  padding:22px clamp(16px,4vw,44px);
  background:linear-gradient(135deg, rgba(10,25,56,.96), rgba(24,78,170,.95));
  color:#fff;
  border-bottom:1px solid rgba(255,255,255,.08);
  box-shadow:0 12px 32px rgba(12,25,61,.22);
  backdrop-filter:blur(12px);
}
.brand{
  display:inline-block;
  color:#fff;
  text-decoration:none;
  font-size:clamp(30px,3vw,38px);
  font-weight:900;
  letter-spacing:-.03em;
}
.site-header p{
  margin:8px 0 0;
  color:#d8e5ff;
  font-size:18px;
  font-weight:700;
}
.site-header nav{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.site-header nav a{
  color:#fff;
  text-decoration:none;
  border:1px solid rgba(255,255,255,.22);
  background:rgba(255,255,255,.06);
  padding:11px 16px;
  border-radius:999px;
  font-weight:800;
  transition:.18s ease;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
}
.site-header nav a:hover{transform:translateY(-1px);background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.35)}
.container{max-width:1180px;margin:28px auto 54px;padding:0 16px;position:relative;z-index:1}
.card{
  background:var(--panel);
  border:1px solid rgba(255,255,255,.58);
  backdrop-filter:blur(10px);
  border-radius:28px;
  padding:26px;
  margin:18px 0;
  box-shadow:var(--shadow);
}
.hero{
  position:relative;
  overflow:hidden;
  background:linear-gradient(135deg, rgba(255,255,255,.96), rgba(242,247,255,.92));
}
.hero::after{
  content:"";
  position:absolute;
  width:220px;
  height:220px;
  right:-40px;
  top:-60px;
  border-radius:50%;
  background:radial-gradient(circle, rgba(39,86,216,.18), rgba(39,86,216,0));
}
.hero h1{margin:0 0 10px;font-size:clamp(30px,4vw,42px);letter-spacing:-.03em}
.hero p{max-width:760px;line-height:1.7}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px}
.grid .card{margin:0;padding:20px}
.grid .card h2{margin:0 0 8px;font-size:20px}
.actions{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
label{display:block;font-weight:900;margin:14px 0 8px;font-size:18px}
input,button,select,textarea{font:inherit}
input[type=email],input[type=password],input[type=text],input[type=file],textarea{
  width:100%;
  padding:16px 18px;
  border:1px solid var(--line);
  border-radius:18px;
  background:#fff;
  transition:border-color .15s ease, box-shadow .15s ease, transform .15s ease;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.8);
}
input:focus,textarea:focus,select:focus{outline:none;border-color:#7aa6ff;box-shadow:0 0 0 5px rgba(39,86,216,.12)}
textarea{resize:vertical;min-height:120px;line-height:1.7}
.file-list{display:grid;gap:14px}
.file-item{
  display:block;
  color:inherit;
  text-decoration:none;
  border:1px solid rgba(39,86,216,.10);
  border-radius:22px;
  padding:18px;
  background:linear-gradient(180deg, rgba(255,255,255,.98), rgba(248,251,255,.95));
  transition:.18s ease;
  box-shadow:0 10px 26px rgba(17,24,39,.05);
}
.file-item:hover{transform:translateY(-2px);box-shadow:0 18px 34px rgba(17,24,39,.1);border-color:rgba(39,86,216,.22)}
.file-title{font-weight:900;font-size:19px;margin-bottom:8px;word-break:break-all}
.muted{color:var(--muted)}
.small{font-size:13px}
.note-strip{
  display:flex;gap:10px;align-items:flex-start;flex-wrap:wrap;
  background:linear-gradient(180deg,#f8fbff,#f0f6ff);
  border:1px solid #cfe0ff;border-radius:18px;padding:14px 16px;margin:14px 0 0;
}
.note-strip strong{font-size:15px}
.memo-box,.guide-box,.result,.info-box{
  background:linear-gradient(180deg,#f9fbff,#f2f7ff);
  border:1px solid #d3dff5;
  border-radius:20px;
  padding:16px 18px;
  margin:14px 0;
}
.memo-preview{color:#344054;margin:8px 0;white-space:normal;word-break:break-word;line-height:1.7}
.memo-cell{white-space:normal;min-width:240px;max-width:420px;word-break:break-word;line-height:1.7}
.btn,button{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
  color:#fff;border:0;border-radius:18px;padding:14px 20px;font-weight:900;text-decoration:none;cursor:pointer;
  box-shadow:0 14px 28px rgba(39,86,216,.22);
  transition:.16s ease;
}
.btn:hover,button:hover{transform:translateY(-1px);filter:brightness(1.03)}
.btn.secondary,button.secondary{background:linear-gradient(135deg,#4a5568,#1f2937)}
.btn.danger,button.danger{background:linear-gradient(135deg,#ef4444,#b42318)}
.btn.ok,button.ok{background:linear-gradient(135deg,#10b981,#067647)}
.flash{padding:14px 16px;border-radius:18px;margin:14px 0;font-weight:700;box-shadow:var(--shadow)}
.flash.ok{background:#ecfdf3;color:#05603a;border:1px solid #a6f4c5}.flash.error{background:#fef3f2;color:#912018;border:1px solid #f7b4ae}
.table-wrap{overflow:auto;border-radius:20px;border:1px solid var(--line);background:#fff}
table{width:100%;border-collapse:collapse;background:#fff}th,td{border-bottom:1px solid #e5ebf5;padding:12px;text-align:left;vertical-align:top;white-space:nowrap}th{background:#f3f7ff;color:#22324e;font-size:14px}
.pill{display:inline-block;padding:6px 10px;border-radius:999px;background:#eef4ff;color:#173e88;font-size:12px;font-weight:900}
.danger-text{color:var(--danger);font-weight:800}.ok-text{color:var(--ok);font-weight:800}
.footer{text-align:center;color:#6b7280;padding:26px 16px 40px;font-size:15px}
.result{font-size:17px;word-break:break-all;line-height:1.8}
.file-meta{display:flex;flex-wrap:wrap;gap:10px 14px;margin:10px 0 0}
.file-meta span{display:inline-flex;gap:6px;align-items:center;background:#f6f9ff;border:1px solid #dce7f7;padding:8px 12px;border-radius:999px;font-size:14px;color:#35507f}
.guide-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px;margin-top:12px}
.guide-card{background:#fff;border:1px solid #dbe7fb;border-radius:20px;padding:16px;box-shadow:0 6px 18px rgba(17,24,39,.04)}
.guide-card h3{margin:0 0 8px;font-size:18px}
.kbd{display:inline-block;background:#142033;color:#fff;border-radius:10px;padding:4px 8px;font-size:12px;font-weight:800;letter-spacing:.03em}
.pin-hero{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;flex-wrap:wrap}
.pin-hero h1{margin:0 0 10px;font-size:clamp(34px,4vw,56px);letter-spacing:-.03em}
.pin-form{max-width:680px}
.helper-list{margin:10px 0 0;padding-left:18px;line-height:1.9;color:#42526b}
.helper-list li{margin:4px 0}
.download-tip{margin-top:12px;padding:14px 16px;border-radius:18px;background:#fff7ed;border:1px solid #fed7aa;color:#9a3412;font-weight:700}
.search-row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.search-row input{flex:1;min-width:220px}
.copy-message{white-space:pre-wrap;font-size:15px;line-height:1.8;background:#ffffff;border:1px dashed #b8c9ea;border-radius:16px;padding:14px}
.stat-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:14px}
.stat-chip{display:inline-flex;align-items:center;gap:8px;padding:10px 14px;background:#fff;border:1px solid #dbe7fb;border-radius:999px;font-weight:800;color:#24416f}
@media(max-width:780px){
  .site-header{display:block;padding:22px 20px}
  .site-header nav{margin-top:16px}
  .brand{font-size:28px}
  .site-header p{font-size:16px}
}
@media(max-width:640px){
  .container{padding:0 12px;margin-top:20px}
  .card{border-radius:24px;padding:18px}
  .hero h1,.pin-hero h1{font-size:28px}
  th,td{font-size:13px}
  .btn,button{width:auto}
  .file-meta span{width:100%;justify-content:flex-start}
}