:root { --ink:#14213d; --muted:#596579; --line:#dbe2ea; --paper:#f7f9fc; --surface:#ffffff; --accent:#037a68; --accent-dark:#025d50; --accent-wash:#e6f4f0; --radius:8px; }
* { box-sizing:border-box; }
html { scroll-behavior:smooth; }
body { margin:0; color:var(--ink); background:var(--paper); font-family:Arial,Helvetica,sans-serif; line-height:1.5; }
a { color:var(--accent-dark); }
a:hover { color:var(--accent); }
.shell { width:min(1120px,calc(100% - 32px)); margin:0 auto; }
.topbar { background:var(--surface); border-bottom:1px solid var(--line); }
.nav { height:66px; display:flex; align-items:center; justify-content:space-between; gap:24px; }
.brand { color:var(--ink); text-decoration:none; font-size:21px; font-weight:800; }
.brand span { color:var(--accent); }
.nav-links { display:flex; align-items:center; gap:20px; font-size:14px; font-weight:700; }
.nav-links a { text-decoration:none; color:var(--muted); }
.nav-links a:hover { color:var(--accent); }
.button { display:inline-flex; align-items:center; justify-content:center; min-height:42px; padding:9px 15px; border:1px solid var(--accent); border-radius:var(--radius); background:var(--accent); color:#fff; text-decoration:none; font:inherit; font-weight:700; cursor:pointer; }
.button:hover { background:var(--accent-dark); color:#fff; }
.button:active { transform:translateY(1px); }
.button.secondary { color:var(--accent-dark); background:#fff; }
.button.secondary:hover { background:var(--accent-wash); color:var(--accent-dark); }
.hero { padding:58px 0 38px; background:var(--surface); border-bottom:1px solid var(--line); }
.eyebrow { margin:0 0 10px; color:var(--accent-dark); font-size:13px; font-weight:800; }
h1,h2,h3 { margin:0; color:var(--ink); letter-spacing:0; }
h1 { max-width:760px; font-size:44px; line-height:1.1; }
h2 { font-size:28px; line-height:1.2; }
h3 { font-size:18px; line-height:1.3; }
.lede { max-width:700px; margin:16px 0 0; color:var(--muted); font-size:18px; }
.hero-actions { display:flex; flex-wrap:wrap; gap:12px; margin-top:24px; }
.section { padding:46px 0; }
.section-head { margin-bottom:22px; }
.section-head p { max-width:720px; margin:8px 0 0; color:var(--muted); }
.tool-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:16px; }
.tool-link { display:block; min-height:160px; padding:22px; border:1px solid var(--line); border-radius:var(--radius); background:#fff; text-decoration:none; color:inherit; }
.tool-link:hover { border-color:var(--accent); box-shadow:0 8px 22px rgba(20,33,61,.08); }
.tool-link p { margin:9px 0 0; color:var(--muted); font-size:14px; }
.tag { display:inline-block; margin-bottom:16px; color:var(--accent-dark); font-size:12px; font-weight:800; }
.notice { padding:16px 18px; border-left:4px solid var(--accent); background:var(--accent-wash); color:#17483f; }
.steps { display:grid; grid-template-columns:repeat(3,1fr); gap:24px; padding:0; list-style:none; counter-reset:steps; }
.steps li { position:relative; padding:42px 0 0; color:var(--muted); }
.steps li::before { counter-increment:steps; content:counter(steps); position:absolute; top:0; display:grid; width:28px; height:28px; place-items:center; border-radius:50%; background:var(--ink); color:#fff; font-size:13px; font-weight:800; }
.page-layout { display:grid; grid-template-columns:minmax(0,1fr) 290px; gap:32px; padding:40px 0 54px; }
.content { min-width:0; }
.content h1 { font-size:38px; }
.content h2 { margin-top:34px; }
.content p,.content li { color:var(--muted); }
.content ul { padding-left:20px; }
.sidebar { align-self:start; padding:20px; border:1px solid var(--line); border-radius:var(--radius); background:#fff; }
.sidebar h2 { font-size:18px; }
.sidebar a { display:block; padding:10px 0; border-bottom:1px solid var(--line); text-decoration:none; font-weight:700; font-size:14px; }
.sidebar a:last-child { border-bottom:0; }
.tool-panel { margin:24px 0; padding:24px; border:1px solid var(--line); border-radius:var(--radius); background:#fff; }
.form-grid { display:grid; grid-template-columns:repeat(2,1fr); gap:14px; }
label { display:block; color:var(--ink); font-size:14px; font-weight:700; }
input,select { width:100%; height:42px; margin-top:6px; padding:8px 10px; border:1px solid #b9c5d3; border-radius:6px; color:var(--ink); background:#fff; font:inherit; }
input:focus,select:focus { outline:3px solid rgba(3,122,104,.18); border-color:var(--accent); }
.result { margin-top:18px; padding:17px; border-radius:6px; background:var(--accent-wash); color:#17483f; font-weight:700; }
.result strong { display:block; margin-top:3px; color:var(--ink); font-size:28px; }
.result span { display:block; margin-top:5px; color:var(--muted); font-size:13px; font-weight:400; }
.upload-zone { display:grid; min-height:210px; place-items:center; padding:22px; border:2px dashed #aebdca; border-radius:var(--radius); background:#fbfcfd; text-align:center; }
.upload-zone p { margin:0; color:var(--muted); }
.image-preview { display:none; width:100%; max-height:360px; margin-top:18px; object-fit:contain; background:#f1f4f8; }
.tool-actions { display:flex; flex-wrap:wrap; gap:12px; margin-top:18px; }
.help { margin-top:14px; color:var(--muted); font-size:13px; }
.footer { padding:30px 0; border-top:1px solid var(--line); background:#fff; color:var(--muted); font-size:14px; }
.footer-row { display:flex; justify-content:space-between; gap:20px; }
@media (max-width:800px) { h1 { font-size:34px; } .hero { padding:42px 0 30px; } .tool-grid,.steps { grid-template-columns:1fr; } .page-layout { grid-template-columns:1fr; } .sidebar { order:-1; } .nav-links a:not(.button) { display:none; } .form-grid { grid-template-columns:1fr; } .footer-row { flex-direction:column; } }
@media (max-width:480px) { .shell { width:min(100% - 24px,1120px); } .nav { gap:10px; } .brand { font-size:19px; } .nav-links { gap:0; min-width:0; } .nav-links .button { max-width:154px; overflow:hidden; white-space:nowrap; } .content h1 { font-size:30px; } }