:root{color-scheme:light;--bg: #f7f8f5;--surface: #ffffff;--surface-soft: #eef4ed;--ink: #1d2520;--muted: #607068;--line: #d9e1da;--accent: #1f7a4d;--accent-strong: #145c39;--accent-soft: #dff1e6;--warn: #9a5a13;--danger: #a6382f;--shadow: 0 18px 44px rgba(31, 71, 52, .1);--radius: 8px;--max: 1160px;font-family:Inter,PingFang SC,Microsoft YaHei,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}*{box-sizing:border-box}html{background:var(--bg);color:var(--ink)}body{margin:0;min-width:320px;font-size:16px;line-height:1.65}a{color:inherit;text-decoration:none}img{display:block;max-width:100%}button,input{font:inherit}.site-header{position:sticky;top:0;z-index:10;border-bottom:1px solid rgba(217,225,218,.8);background:#f7f8f5f0;backdrop-filter:blur(14px)}.nav{display:flex;align-items:center;justify-content:space-between;max-width:var(--max);margin:0 auto;padding:16px 24px;gap:24px}.brand{display:inline-flex;align-items:center;gap:10px;font-weight:750;letter-spacing:0}.brand-mark{display:grid;place-items:center;width:34px;height:34px;border-radius:8px;background:var(--ink);color:#fff;font-size:17px;line-height:1}.nav-links{display:flex;align-items:center;gap:8px}.nav-links a{border-radius:8px;padding:8px 12px;color:var(--muted);font-size:15px;font-weight:650}.nav-links a:hover,.nav-links a[aria-current=page]{background:var(--surface);color:var(--ink)}main{min-height:72vh}.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}.section{padding:56px 0}.section-tight{padding:34px 0}.hero{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(320px,.95fr);align-items:center;gap:46px;padding:54px 0 42px}.hero h1,.page-head h1{margin:0;max-width:760px;font-size:clamp(2.35rem,4vw,4.6rem);line-height:1.08;letter-spacing:0}.hero p,.page-head p{max-width:690px;margin:22px 0 0;color:var(--muted);font-size:1.08rem}.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}.button{display:inline-flex;align-items:center;justify-content:center;min-height:44px;border:1px solid var(--ink);border-radius:8px;padding:10px 16px;background:var(--ink);color:#fff;font-size:15px;font-weight:720;cursor:pointer}.button.secondary{border-color:var(--line);background:var(--surface);color:var(--ink)}.button:hover{transform:translateY(-1px)}.hero-panel{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);box-shadow:var(--shadow);overflow:hidden}.hero-panel-head{display:flex;align-items:center;justify-content:space-between;padding:16px 18px;border-bottom:1px solid var(--line);font-size:14px;color:var(--muted)}.hero-panel-body{padding:18px}.mini-result{display:grid;grid-template-columns:1fr auto;gap:8px;align-items:end;padding:14px 0;border-bottom:1px solid var(--line)}.mini-result:last-child{border-bottom:0}.mini-result strong{font-size:1.35rem;line-height:1}.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}.card{display:flex;flex-direction:column;min-height:100%;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);padding:20px}.card:hover{border-color:#1f7a4d59;box-shadow:0 12px 32px #1f473414}.card h2,.card h3{margin:0;font-size:1.2rem;line-height:1.25}.card p{margin:10px 0 0;color:var(--muted)}.card-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;color:var(--muted);font-size:13px}.card-meta span,.tag{border:1px solid var(--line);border-radius:999px;padding:3px 8px;background:#fbfcfa}.page-head{padding:48px 0 28px}.breadcrumbs{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px;color:var(--muted);font-size:14px}.breadcrumbs a{color:var(--accent-strong)}.tool-layout,.template-layout{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(310px,.95fr);gap:24px;align-items:start}.panel{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);padding:22px}.panel h2{margin:0 0 16px;font-size:1.25rem;line-height:1.25}.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.field{display:grid;gap:6px}.field label{color:var(--ink);font-size:14px;font-weight:700}.input-wrap{display:grid;grid-template-columns:1fr auto;align-items:center;border:1px solid var(--line);border-radius:8px;background:#fbfcfa;overflow:hidden}.input-wrap input{width:100%;min-height:42px;border:0;background:transparent;padding:9px 11px;color:var(--ink);outline:0}.input-wrap span{padding:0 11px;color:var(--muted);font-size:13px}.help{margin:0;color:var(--muted);font-size:13px}.results{display:grid;gap:12px}.result-row{display:flex;justify-content:space-between;gap:12px;border-bottom:1px solid var(--line);padding:0 0 12px}.result-row:last-child{border-bottom:0;padding-bottom:0}.result-row strong{text-align:right;font-size:1.12rem}.note{margin-top:16px;border-left:4px solid var(--accent);background:var(--accent-soft);padding:12px 14px;color:#21462f;font-size:14px}.content-block{margin-top:24px}.content-block h2{margin:0 0 12px;font-size:1.35rem}.content-block p,.content-block li{color:var(--muted)}.content-block ul{padding-left:20px}.faq details{border-top:1px solid var(--line);padding:14px 0}.faq details:last-child{border-bottom:1px solid var(--line)}.faq summary{cursor:pointer;font-weight:720}.faq p{margin:8px 0 0}.preview-frame{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);padding:10px}.preview-frame img{width:100%;border-radius:6px;border:1px solid var(--line)}.download-box{display:grid;gap:12px}.download-box .button{width:100%}.footer{margin-top:60px;border-top:1px solid var(--line);padding:30px 0;color:var(--muted);font-size:14px}.footer-inner{display:flex;justify-content:space-between;gap:18px;max-width:var(--max);margin:0 auto;padding:0 24px}@media(max-width:860px){.nav{align-items:flex-start;flex-direction:column;gap:12px}.hero,.tool-layout,.template-layout,.grid,.grid.two,.form-grid{grid-template-columns:1fr}.section{padding:38px 0}.hero{padding-top:36px}.footer-inner{flex-direction:column}}@media(max-width:520px){.wrap,.nav,.footer-inner{padding-left:16px;padding-right:16px}.hero h1,.page-head h1{font-size:2.18rem}.hero-actions{flex-direction:column}.button{width:100%}}