:root{
  --bg:#f7f8fc;
  --card:#ffffff;
  --text:#1d2433;
  --muted:#6e7891;
  --line:#e6e9f2;
  --primary:#e5322d;
  --primary-dark:#c22723;
  --green:#18a957;
  --shadow:0 20px 60px rgba(30,39,71,.08);
  --radius:22px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;font-family:Inter,Arial,Helvetica,sans-serif;background:linear-gradient(180deg,#f8f9fd 0%,#f2f4fb 100%);color:var(--text)}
a{text-decoration:none;color:inherit}
.wrap{width:min(1180px,calc(100% - 32px));margin:0 auto}
.topbar{position:sticky;top:0;z-index:40;background:rgba(255,255,255,.88);backdrop-filter:blur(10px);border-bottom:1px solid rgba(230,233,242,.9)}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:14px 0}
.brand{display:flex;align-items:center;gap:12px}
.brand-badge{width:44px;height:44px;border-radius:14px;background:linear-gradient(135deg,var(--primary),#ff6b54);display:grid;place-items:center;color:#fff;font-weight:800;box-shadow:0 10px 30px rgba(229,50,45,.28)}
.brand strong{display:block;font-size:1rem}
.brand small{display:block;color:var(--muted)}
.nav{display:flex;flex-wrap:wrap;gap:10px 18px}
.nav a{color:var(--muted);font-weight:600}
.nav a:hover{color:var(--primary)}
.hero{padding:56px 0 26px}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:30px;align-items:center}
.hero-card,.card{background:var(--card);border:1px solid #eff1f7;border-radius:var(--radius);box-shadow:var(--shadow)}
.hero-card{padding:34px}
.kicker{display:inline-flex;align-items:center;gap:8px;background:#fff1f0;color:var(--primary);padding:8px 12px;border-radius:999px;font-size:.88rem;font-weight:700;border:1px solid #ffd8d5}
.hero h1{font-size:clamp(2rem,4vw,3.4rem);line-height:1.04;margin:16px 0}
.hero p{font-size:1.1rem;color:var(--muted);line-height:1.65;margin:0 0 20px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:22px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;border:none;border-radius:16px;padding:15px 22px;font-weight:800;cursor:pointer;transition:.2s transform,.2s background,.2s box-shadow}
.btn:hover{transform:translateY(-1px)}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 16px 30px rgba(229,50,45,.25)}
.btn-primary:hover{background:var(--primary-dark)}
.btn-secondary{background:#fff;border:1px solid var(--line);color:var(--text)}
.hero-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:24px}
.stat{padding:16px;border:1px solid var(--line);border-radius:18px;background:#fafbff}
.stat strong{display:block;font-size:1.15rem;margin-bottom:6px}
.stat span{color:var(--muted);font-size:.95rem}
.grid-tools{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:24px 0 60px}
.tool-card{padding:24px;display:flex;flex-direction:column;gap:10px}
.tool-icon{width:58px;height:58px;border-radius:18px;background:linear-gradient(135deg,#ffe8e5,#fff3f2);display:grid;place-items:center;color:var(--primary);font-weight:900;font-size:1.15rem}
.tool-card h3{margin:6px 0 2px;font-size:1.2rem}
.tool-card p{margin:0;color:var(--muted);line-height:1.6}
.tool-card .btn{margin-top:8px}
.page-head{text-align:center;padding:42px 0 18px}
.page-head h1{font-size:clamp(1.9rem,3vw,2.7rem);margin:10px 0}
.page-head p{max-width:740px;margin:0 auto;color:var(--muted);line-height:1.7}
.form-layout{display:grid;grid-template-columns:1.05fr .95fr;gap:24px;padding-bottom:50px}
.card{padding:28px}
.dropzone{position:relative;border:2px dashed #ffc4be;border-radius:24px;background:linear-gradient(180deg,#fff7f6,#fff);padding:26px;min-height:330px;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;transition:.2s border-color,.2s background}
.dropzone.dragover{border-color:var(--primary);background:#fff1f0}
.dropzone input[type=file]{position:absolute;inset:0;opacity:0;cursor:pointer}
.dropzone h3{margin:18px 0 8px;font-size:1.4rem}
.dropzone p{margin:0;color:var(--muted);max-width:430px;line-height:1.6}
.dropzone .illustration{width:110px;height:110px;border-radius:30px;background:linear-gradient(135deg,var(--primary),#ff7c62);display:grid;place-items:center;color:#fff;font-size:2rem;box-shadow:0 25px 40px rgba(229,50,45,.25)}
.preview-box{display:none;margin-top:20px;width:100%;background:#fff;border:1px solid var(--line);border-radius:20px;padding:16px;text-align:left}
.preview-box.active{display:block}
.preview-box img{width:100%;max-height:300px;object-fit:contain;border-radius:16px;background:#f5f7fb}
.file-meta{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:12px}
.meta-item{padding:12px 14px;border:1px solid var(--line);border-radius:14px;background:#fafbff}
.meta-item strong{display:block;font-size:.85rem;color:var(--muted);margin-bottom:6px}
.meta-item span{font-weight:700}
.form-group{margin-bottom:16px}
label{display:block;font-weight:700;margin-bottom:8px}
input[type=text],input[type=number],input[type=range],select,textarea{width:100%;padding:14px 15px;border-radius:14px;border:1px solid var(--line);background:#fff;color:var(--text);font:inherit}
input[type=range]{padding:0;height:42px}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.checkline{display:flex;align-items:center;gap:10px;color:var(--muted);font-weight:600;margin:10px 0}
.progress{display:none;margin-top:16px;border-radius:999px;background:#f0f2f9;height:12px;overflow:hidden}
.progress.active{display:block}
.progress-bar{width:0%;height:100%;background:linear-gradient(90deg,var(--primary),#ff7e68);transition:width .25s ease}
.notice{padding:14px 16px;border-radius:16px;background:#f6f8fe;border:1px solid var(--line);color:var(--muted);line-height:1.6}
.result-card{padding:34px;text-align:center}
.result-image{width:min(100%,820px);max-height:460px;object-fit:contain;background:#f5f7fb;border:1px solid var(--line);border-radius:24px;margin:24px auto;padding:12px;display:block}
.result-meta{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:26px 0}
.flash{margin:18px auto 0;padding:14px 18px;border-radius:16px;border:1px solid}
.flash-error{background:#fff3f2;border-color:#ffd1cd;color:#9b231f}
.flash-success{background:#effcf4;border-color:#c9f0d7;color:#16773f}
.footer{border-top:1px solid var(--line);padding:22px 0 30px;background:#fff;margin-top:26px}
.footer-inner{display:flex;justify-content:space-between;gap:20px;align-items:center}
.footer-links{display:flex;flex-wrap:wrap;gap:10px 18px;color:var(--muted)}
.small{font-size:.92rem;color:var(--muted)}
.badge-list{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.badge{padding:9px 12px;border-radius:999px;background:#fafbff;border:1px solid var(--line);font-size:.92rem;font-weight:700;color:#4f5873}
.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:24px}
.compare-grid img{width:100%;max-height:350px;object-fit:contain;background:#f5f7fb;border:1px solid var(--line);border-radius:20px;padding:12px}
@media (max-width:960px){
  .hero-grid,.form-layout,.grid-tools,.compare-grid,.result-meta{grid-template-columns:1fr}
  .hero-stats,.file-meta,.two-col{grid-template-columns:1fr 1fr}
}
@media (max-width:720px){
  .nav{display:none}
  .wrap{width:min(100% - 20px,1180px)}
  .hero{padding-top:34px}
  .hero-card,.card,.result-card{padding:20px}
  .hero-stats,.file-meta,.two-col,.result-meta{grid-template-columns:1fr}
  .footer-inner{flex-direction:column;align-items:flex-start}
}