:root{--ink:#0d0e12;--paper:#f7f6f2;--mid:#6b6d76;--accent:#c65a2e;--accent2:#2d6be4;--green:#27ae60;--red:#d1453a;--amber:#e0a325;--border:rgba(13,14,18,0.10);--card-bg:#ffffff;--display:'DM Serif Display',Georgia,serif;--body:'Inter',system-ui,sans-serif;}
    body.dark{--ink:#f0eeea;--paper:#0f1015;--mid:#8b8d96;--border:rgba(240,238,234,0.08);--card-bg:#1a1c24;}
    *{box-sizing:border-box;margin:0;padding:0;transition:background 0.3s,color 0.2s,border-color 0.2s;}
    body{font-family:var(--body);background:var(--paper);color:var(--ink);min-height:100vh;}
    body::before{content:'';position:fixed;inset:0;background-image:linear-gradient(var(--border) 1px,transparent 1px),linear-gradient(90deg,var(--border) 1px,transparent 1px);background-size:60px 60px;pointer-events:none;z-index:0;}
    .page{position:relative;z-index:1;padding:0 clamp(1.5rem,5vw,4rem);max-width:900px;margin:0 auto;}
    nav{display:flex;align-items:center;justify-content:space-between;padding:1.5rem 0;border-bottom:1px solid var(--border);flex-wrap:wrap;gap:1rem;}
    .logo{font-family:var(--display);font-size:1.5rem;color:var(--ink);text-decoration:none;}
    .logo span{color:var(--accent);}
    .logo small{font-size:0.55rem;color:var(--mid);font-family:var(--body);display:block;letter-spacing:0.08em;text-transform:uppercase;margin-top:-4px;}
    .nav-links{display:flex;gap:1rem;align-items:center;flex-wrap:wrap;}
    .nav-links a{font-size:0.83rem;color:var(--mid);text-decoration:none;}
    .nav-links a:hover,.nav-links a.active{color:var(--accent);font-weight:600;}
    .dark-toggle{width:36px;height:36px;border-radius:50%;border:1.5px solid var(--border);background:var(--card-bg);display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:1rem;}

    .page-hero{padding:3rem 0 2rem;text-align:center;}
    .page-tag{font-size:0.72rem;letter-spacing:0.16em;text-transform:uppercase;color:var(--accent);display:inline-flex;align-items:center;gap:0.6rem;margin-bottom:1rem;}
    .page-tag::before,.page-tag::after{content:'';display:block;width:20px;height:1px;background:var(--accent);}
    h1{font-family:var(--display);font-size:clamp(1.9rem,4.5vw,2.7rem);line-height:1.15;letter-spacing:-0.02em;margin-bottom:0.6rem;}
    h1 em{font-style:italic;color:var(--accent);}
    .hero-sub{font-size:1rem;color:var(--mid);max-width:56ch;margin:0 auto 2rem;line-height:1.7;}

    .other-tools{display:flex;gap:0.6rem;flex-wrap:wrap;justify-content:center;margin-bottom:2.5rem;}
    .other-tool-chip{font-size:0.8rem;font-weight:500;padding:0.5rem 1rem;border-radius:2rem;border:1.5px solid var(--border);background:var(--card-bg);color:var(--mid);text-decoration:none;white-space:nowrap;transition:all 0.15s;}
    .other-tool-chip:hover{border-color:var(--accent);color:var(--accent);}

    .tool-panel{background:var(--card-bg);border:1px solid var(--border);border-radius:0.85rem;box-shadow:0 1px 2px rgba(13,14,18,0.03),0 10px 26px rgba(13,14,18,0.05);padding:2rem;margin-bottom:2rem;}
    .form-group{margin-bottom:1.2rem;}
    .form-group label{display:block;font-size:0.82rem;font-weight:600;color:var(--ink);margin-bottom:0.4rem;letter-spacing:0.02em;}
    .form-group input,.form-group select,.form-group textarea{width:100%;padding:0.75rem 1rem;border:1.5px solid var(--border);border-radius:0.3rem;background:var(--paper);color:var(--ink);font-family:var(--body);font-size:0.9rem;outline:none;}
    .form-group input:focus,.form-group select:focus,.form-group textarea:focus{border-color:var(--accent);}
    .form-group textarea{resize:vertical;min-height:100px;line-height:1.6;}
    .form-group .hint{font-size:0.76rem;color:var(--mid);margin-top:0.3rem;}
    .form-row{display:grid;grid-template-columns:1fr 1fr;gap:1rem;}
    @media(max-width:600px){.form-row{grid-template-columns:1fr;}}
    .gen-btn{background:var(--ink);color:var(--paper);font-family:var(--body);font-size:0.9rem;font-weight:600;padding:0.8rem 2rem;border:none;border-radius:0.3rem;cursor:pointer;margin-top:0.5rem;}
    .gen-btn:hover{background:var(--accent);}
    .copy-btn{background:transparent;color:var(--accent);border:1.5px solid var(--accent);font-family:var(--body);font-size:0.82rem;font-weight:600;padding:0.6rem 1.2rem;border-radius:0.3rem;cursor:pointer;}
    .copy-btn:hover{background:var(--accent);color:#fff;}
    .copy-btn.copied{background:var(--green);border-color:var(--green);color:#fff;}
    .btn-row{display:flex;gap:0.8rem;margin-top:0.8rem;flex-wrap:wrap;}
    .output-box{margin-top:1.5rem;display:none;}
    .output-box.show{display:block;}
    .output-label{font-size:0.75rem;font-weight:600;letter-spacing:0.08em;text-transform:uppercase;color:var(--mid);margin-bottom:0.5rem;}
    .output-code{background:#0d0e12;color:#e8f4e8;font-family:monospace;font-size:0.82rem;padding:1.2rem;border-radius:0.3rem;word-break:break-all;line-height:1.7;white-space:pre-wrap;max-height:340px;overflow-y:auto;}
    body.dark .output-code{background:#0a0b0f;}
    .result-card{background:var(--paper);border:1.5px solid var(--border);border-radius:0.5rem;padding:1.4rem;margin-top:1rem;}
    .result-row{display:flex;justify-content:space-between;align-items:center;padding:0.6rem 0;border-bottom:1px solid var(--border);}
    .result-row:last-child{border-bottom:none;}
    .result-label{font-size:0.88rem;color:var(--mid);}
    .result-value{font-size:1.3rem;font-weight:700;font-family:var(--display);}
    .score-bar{height:8px;border-radius:4px;background:var(--border);margin:0.6rem 0;overflow:hidden;}
    .score-fill{height:100%;border-radius:4px;transition:width 0.5s ease;}
    .badge{display:inline-block;font-size:0.72rem;font-weight:700;padding:0.25rem 0.7rem;border-radius:2rem;}
    .badge-good{background:rgba(39,174,96,0.12);color:var(--green);}
    .badge-warn{background:rgba(224,163,37,0.15);color:var(--amber);}
    .badge-bad{background:rgba(209,69,58,0.12);color:var(--red);}
    .highlight-out{background:var(--paper);border:1.5px solid var(--border);border-radius:0.4rem;padding:1rem 1.2rem;font-size:0.92rem;line-height:1.9;}
    .highlight-out mark{background:rgba(209,69,58,0.18);color:var(--red);padding:0.05rem 0.2rem;border-radius:0.2rem;font-weight:600;}
    .word-chip{display:inline-block;background:rgba(209,69,58,0.1);color:var(--red);font-size:0.78rem;font-weight:600;padding:0.25rem 0.7rem;border-radius:2rem;margin:0.2rem 0.3rem 0.2rem 0;}

    .article{padding:1rem 0 3rem;}
    h2{font-family:var(--display);font-size:1.4rem;margin:2.2rem 0 0.8rem;}
    p{font-size:0.93rem;color:#3a3b40;line-height:1.8;margin-bottom:1rem;}
    body.dark p{color:#b0b2bc;}
    ul{padding-left:1.4rem;margin-bottom:1rem;}
    ul li{font-size:0.93rem;color:#3a3b40;line-height:1.8;margin-bottom:0.4rem;}
    body.dark ul li{color:#b0b2bc;}
    .checklist{background:var(--card-bg);border:1.5px solid var(--border);border-radius:0.4rem;padding:1.3rem 1.5rem;margin:1.3rem 0;}
    .checklist h4{font-size:0.88rem;font-weight:600;margin-bottom:0.7rem;}
    .checklist-item{display:flex;align-items:flex-start;gap:0.6rem;padding:0.35rem 0;border-bottom:1px solid var(--border);font-size:0.86rem;color:#3a3b40;}
    body.dark .checklist-item{color:#b0b2bc;}
    .checklist-item:last-child{border-bottom:none;}
    .check{color:var(--accent);font-weight:700;flex-shrink:0;}
    .faq-list{margin:1rem 0;}
    .faq-item{border-bottom:1px solid var(--border);padding:1rem 0;}
    .faq-item:last-child{border-bottom:none;}
    .faq-q{font-weight:600;font-size:0.94rem;color:var(--ink);margin-bottom:0.4rem;}
    .faq-a{font-size:0.88rem;color:#3a3b40;line-height:1.75;margin:0;}
    body.dark .faq-a{color:#b0b2bc;}

    footer{padding:1.6rem 0;border-top:1px solid var(--border);margin-top:2rem;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:1rem;}
    footer p{font-size:0.78rem;color:var(--mid);}
    .footer-links{display:flex;gap:1.2rem;align-items:center;flex-wrap:wrap;}
    .footer-links a{font-size:0.78rem;color:var(--mid);text-decoration:none;}
    .footer-links a:hover{color:var(--accent);}