:root{
  --bg:#f4f7fb;
  --bg-soft:#eef4ff;
  --card:#ffffff;
  --text:#122033;
  --muted:#66768f;
  --line:#d9e2ef;
  --primary:#1f5eff;
  --primary-dark:#1749c9;
  --accent:#7a5cff;
  --success:#14a44d;
  --danger:#d84848;
  --shadow:0 18px 50px rgba(20,36,80,.08);
  --radius:22px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;font-family:Inter,Arial,sans-serif;color:var(--text);background:linear-gradient(180deg,#f8fbff 0%,#f4f7fb 100%)}
a{color:var(--primary);text-decoration:none}
a:hover{text-decoration:none}
img{max-width:100%}
.container{width:min(1200px,calc(100% - 32px));margin:0 auto}
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.88);backdrop-filter:blur(14px);border-bottom:1px solid rgba(217,226,239,.9)}
.header-wrap{display:grid;grid-template-columns:auto 1fr auto auto;align-items:center;gap:18px;padding:16px 0}
.brand{display:flex;align-items:center;gap:12px;color:var(--text)}
.brand:hover{text-decoration:none}
.brand-mark{display:grid;place-items:center;width:44px;height:44px;border-radius:14px;background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;font-size:22px;box-shadow:var(--shadow)}
.brand-copy strong{display:block;font-size:18px}
.brand-copy small{display:block;color:var(--muted);font-size:13px}
.main-nav{display:flex;gap:20px;align-items:center;justify-content:center}
.main-nav a{color:var(--text);font-weight:600;font-size:15px}
.main-nav a:hover{color:var(--primary)}
.header-cta{display:flex;justify-content:flex-end}
.nav-toggle{display:none;border:1px solid var(--line);background:#fff;border-radius:12px;padding:10px 13px;cursor:pointer}
.page-hero{padding:74px 0 46px;background:radial-gradient(circle at top right,rgba(122,92,255,.14),transparent 30%),linear-gradient(180deg,#eef4ff 0%,rgba(238,244,255,0) 100%)}
.page-hero.slim{padding:34px 0 22px}
.home-hero{padding:76px 0 54px}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:28px;align-items:center}
.hero-copy h1{font-size:56px;line-height:1.02;margin:14px 0 16px;letter-spacing:-.03em}
.hero-copy p{margin:0 0 22px;color:var(--muted);font-size:18px;line-height:1.7;max-width:760px}
.button-row{display:flex;gap:12px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;border:none;border-radius:14px;padding:14px 20px;font-weight:700;cursor:pointer;background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;box-shadow:var(--shadow);transition:.18s ease}
.btn:hover{transform:translateY(-1px);color:#fff}
.btn.secondary{background:#fff;color:var(--text);border:1px solid var(--line);box-shadow:none}
.btn-small{padding:11px 14px;border-radius:12px;font-size:14px}
.card{background:var(--card);border:1px solid rgba(217,226,239,.9);border-radius:var(--radius);box-shadow:var(--shadow);padding:24px}
.card-strong{padding:28px}
.card-gradient{background:linear-gradient(180deg,#ffffff,#f8fbff)}
.card-head{display:flex;justify-content:space-between;align-items:flex-start;gap:18px;margin-bottom:18px}
.pill,.badge{display:inline-flex;align-items:center;gap:8px;padding:9px 12px;border-radius:999px;font-size:13px;font-weight:700;border:1px solid #dbe6fb;background:#fff;color:var(--primary)}
.badge.dark{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.15);color:#d8e2ff}
.badge-row,.footer-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}
.hero-search{display:grid;grid-template-columns:1fr auto;gap:12px;margin-top:18px}
.hero-search input{width:100%;padding:16px 16px;border-radius:14px;border:1px solid var(--line);background:#fff;color:var(--text);font-size:15px;outline:none}
.hero-showcase{padding:26px}
.showcase-top{display:flex;justify-content:space-between;gap:10px;margin-bottom:18px}
.mini-label{display:inline-flex;padding:8px 11px;border-radius:999px;background:#edf3ff;color:var(--primary);font-size:12px;font-weight:800;text-transform:uppercase;letter-spacing:.04em}
.mini-label.success{background:#eaf9f0;color:#16804a}
.quick-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.quick-card{display:flex;flex-direction:column;gap:6px;padding:18px;border-radius:18px;border:1px solid var(--line);background:#fff;color:var(--text);transition:.18s ease}
.quick-card:hover{transform:translateY(-2px)}
.quick-card strong{font-size:16px}
.quick-card span{font-size:14px;color:var(--muted)}
.hero-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:18px}
.hero-stats div{padding:16px;border-radius:16px;background:#fff;border:1px solid var(--line);text-align:center}
.hero-stats strong{display:block;font-size:24px;margin-bottom:4px}
.hero-stats span{font-size:13px;color:var(--muted)}
.section{padding:30px 0 42px}
.section-soft{background:linear-gradient(180deg,rgba(238,244,255,.65),rgba(238,244,255,0))}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:18px;margin-bottom:18px}
.section-head h2{margin:0 0 6px;font-size:34px;letter-spacing:-.02em}
.section-head p{margin:0;color:var(--muted);line-height:1.6}
.tool-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.tool-grid.compact{grid-template-columns:repeat(4,1fr)}
.tool-card{display:block;padding:22px;border-radius:22px;background:#fff;border:1px solid rgba(217,226,239,.9);box-shadow:var(--shadow);color:var(--text);transition:.18s ease}
.tool-card:hover{transform:translateY(-3px);text-decoration:none;border-color:#c9d8f5}
.icon-wrap{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.icon{display:grid;place-items:center;width:52px;height:52px;border-radius:16px;background:linear-gradient(135deg,#edf3ff,#f7f2ff);font-size:26px}
.open-link{font-size:13px;font-weight:700;color:var(--primary)}
.tool-card h3{margin:0 0 10px;font-size:21px;letter-spacing:-.01em}
.tool-card p{margin:0 0 14px;color:var(--muted);line-height:1.65}
.tool-card .meta{display:flex;justify-content:space-between;gap:10px;color:var(--muted);font-size:14px;padding-top:12px;border-top:1px solid #edf2f8}
.tool-card.mini{display:flex;gap:14px;align-items:center;padding:18px}
.tool-card.mini .icon{width:44px;height:44px;font-size:22px}
.category-grid,.feature-grid,.info-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.category-box,.feature-box,.info-box{display:block;padding:24px;border-radius:22px;background:#fff;border:1px solid rgba(217,226,239,.9);box-shadow:var(--shadow);color:var(--text)}
.category-box:hover{text-decoration:none;transform:translateY(-2px)}
.category-count{display:inline-flex;padding:7px 10px;border-radius:999px;background:#edf3ff;color:var(--primary);font-size:12px;font-weight:800;margin-bottom:12px}
.category-box h3,.feature-box h3,.info-box h3{margin:0 0 10px;font-size:24px}
.category-box p,.feature-box p,.info-box p{margin:0 0 14px;color:var(--muted);line-height:1.65}
.toolbar-card{display:flex;justify-content:space-between;gap:16px;align-items:center;flex-wrap:wrap}
.toolbar-stats{display:flex;gap:10px;flex-wrap:wrap}
.breadcrumb{color:var(--muted);margin-bottom:14px;font-size:14px}
.breadcrumb a{color:var(--muted)}
.tool-layout{display:grid;grid-template-columns:1.25fr .75fr;gap:20px;padding:12px 0}
.stack-form{display:grid;gap:14px}
.stack-form label{font-weight:700;display:grid;gap:8px}
.stack-form input,.stack-form textarea,.stack-form select{width:100%;padding:14px 15px;border:1px solid var(--line);border-radius:14px;background:#fff;color:var(--text);font-size:15px;outline:none}
.dropzone{padding:24px;border:2px dashed #b8c7e3;border-radius:20px;background:linear-gradient(180deg,#f9fbff,#f4f8ff)}
.dropzone-title{font-size:18px;font-weight:800}
.dropzone small{color:var(--muted)}
.engine-chip{display:inline-flex;padding:10px 12px;border-radius:999px;background:#edf3ff;color:var(--primary);font-weight:700;font-size:13px}
.meta-list{list-style:none;margin:0;padding:0;display:grid;gap:14px}
.meta-list li{display:flex;justify-content:space-between;gap:18px;padding-bottom:12px;border-bottom:1px solid #edf2f8}
.sidebar-tip{margin-top:18px;padding:18px;border-radius:18px;background:linear-gradient(180deg,#f8fbff,#eef4ff);border:1px solid var(--line)}
.sidebar-tip strong{display:block;margin-bottom:8px}
.sidebar-tip p{margin:0;color:var(--muted);line-height:1.6}
.content-block{padding:20px 0 42px}
.content-block h2{font-size:30px;margin-bottom:10px}
.content-block p{color:var(--muted);line-height:1.8;max-width:900px}
.notice{padding:14px 16px;border-radius:14px;margin-bottom:16px}
.notice.success{background:#ecfff4;color:#116b37;border:1px solid #c5f1d8}
.notice.error{background:#fff2f2;color:#aa2f2f;border:1px solid #f3c5c5}
.table-wrap{overflow:auto}
.result-table{width:100%;border-collapse:collapse}
.result-table th,.result-table td{padding:14px 12px;border-bottom:1px solid #edf2f8;text-align:left;vertical-align:top}
.seo-score{display:flex;align-items:center;gap:18px}
.score-badge{width:96px;height:96px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;font-size:30px;font-weight:800;box-shadow:var(--shadow)}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.items-table{width:100%;border-collapse:collapse;margin-top:14px;border:1px solid #edf2f8;border-radius:16px;overflow:hidden}
.items-table th,.items-table td{border-bottom:1px solid #edf2f8;padding:12px;text-align:left}
.items-table input{width:100%;padding:12px;border:1px solid var(--line);border-radius:12px}
.invoice-preview{margin-top:22px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px}
.invoice-sheet{max-width:800px;margin:0 auto}
.invoice-sheet .top{display:flex;justify-content:space-between;gap:16px;border-bottom:2px solid #edf2f8;padding-bottom:16px;margin-bottom:16px}
.invoice-sheet table{width:100%;border-collapse:collapse}
.invoice-sheet th,.invoice-sheet td{padding:10px;border-bottom:1px solid #edf2f8;text-align:left}
.invoice-summary{width:320px;margin-left:auto;margin-top:18px}
.invoice-summary div{display:flex;justify-content:space-between;padding:8px 0}
.site-footer{background:#0e1730;color:#d7e1ff;padding:48px 0 14px;margin-top:34px}
.site-footer h3,.site-footer h4{color:#fff;margin-top:0}
.site-footer p{color:#b7c5e7;line-height:1.7}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:26px}
.footer-links{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.site-footer a{color:#d7e1ff}
.footer-bottom{padding:20px 0 6px;color:#afbddf;border-top:1px solid rgba(255,255,255,.08);margin-top:24px}
.search-card{display:flex;justify-content:space-between;gap:16px;align-items:center}
.muted{color:var(--muted)}
.hidden{display:none}
@media (max-width:1080px){
  .header-wrap{grid-template-columns:auto 1fr auto}
  .header-cta{display:none}
  .hero-grid,.tool-layout,.tool-grid,.tool-grid.compact,.category-grid,.feature-grid,.info-grid,.footer-grid{grid-template-columns:1fr 1fr}
  .hero-copy h1{font-size:46px}
}
@media (max-width:760px){
  .header-wrap{grid-template-columns:auto auto auto;justify-content:space-between}
  .nav-toggle{display:block}
  .main-nav{display:none;position:absolute;left:16px;right:16px;top:76px;flex-direction:column;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:18px;padding:16px;box-shadow:var(--shadow)}
  .main-nav.open{display:flex}
  .hero-grid,.tool-layout,.tool-grid,.tool-grid.compact,.category-grid,.feature-grid,.info-grid,.footer-grid,.two-col,.quick-grid,.hero-stats{grid-template-columns:1fr}
  .hero-copy h1{font-size:36px}
  .hero-copy p{font-size:16px}
  .hero-search{grid-template-columns:1fr}
  .section-head h2{font-size:28px}
  .card-head{flex-direction:column}
}
@media print{.site-header,.site-footer,.button-row,.tool-sidebar,.breadcrumb,.related-card{display:none!important}body{background:#fff}.invoice-preview{border:none;box-shadow:none;padding:0}.invoice-sheet{max-width:none}}