:root{
  --navy-950:#000a19;--navy-900:#0a1626;--navy-850:#0e1c2e;--navy-800:#132436;
  --ink:#0c1622;
  --gold:#FAB60D;--gold-600:#e6a406;--gold-tint:rgba(250,182,13,.12);
  --paper:#ffffff;--paper-2:#f5f7f9;
  --c-ink-900:#14202c;--c-ink-600:#42525f;--c-ink-400:#7a8894;
  --line-light:#e6eaee;--line-dark:rgba(255,255,255,.09);
  --white:#ffffff;--slate:#9fb2c4;
  --maxw:1180px;--r:16px;
  --shadow:0 18px 40px -24px rgba(8,18,30,.35);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:72px}
body{font-family:'Inter',system-ui,sans-serif;color:var(--c-ink-900);background:var(--paper);line-height:1.6;-webkit-font-smoothing:antialiased}
h1,h2,h3,h4{font-family:'Sora',sans-serif;line-height:1.08;letter-spacing:-.02em;font-weight:700}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ========== NAV ========== */
.nav{position:fixed;top:0;left:0;right:0;z-index:60;background:rgba(9,22,38,.92);backdrop-filter:blur(14px);border-bottom:1px solid var(--line-dark)}
.nav-inner{max-width:var(--maxw);margin:0 auto;padding:0 24px;height:68px;display:flex;align-items:center;justify-content:space-between}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none}
.brand img{height:42px;width:auto;transform:translateY(-3px)}
.brand>span{display:flex;flex-direction:column}
.brand .wm{font-family:'Sora',sans-serif;font-weight:700;font-size:1.24rem;color:#fff;letter-spacing:-.01em;line-height:1.04}
.brand .wm .n{color:var(--gold)}
.brand .tag{font-family:'Sora',sans-serif;font-weight:500;font-size:.52rem;letter-spacing:.34em;color:var(--slate);margin-top:3px}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-links a{font-size:.92rem;color:#e7edf3;font-weight:500;opacity:.82;transition:opacity .2s}
.nav-links a:hover,.nav-links a.active{opacity:1;color:var(--gold)}
.burger{display:none;background:none;border:0;cursor:pointer;padding:8px}
.burger span{display:block;width:22px;height:2px;background:#fff;margin:5px 0;transition:.25s}

/* ========== HOMEPAGE HERO ========== */
.hero{position:relative;background:radial-gradient(120% 90% at 78% 8%,#12294a 0%,var(--navy-900) 42%,var(--navy-950) 100%);color:#fff;overflow:hidden;padding:110px 0 64px}
.hero::before{content:"";position:absolute;inset:0;background-image:radial-gradient(circle,rgba(255,255,255,.5) 1px,transparent 1px);background-size:44px 44px;opacity:.05;pointer-events:none}
.hero-grid{display:grid;grid-template-columns:1fr 380px;gap:48px;align-items:center;position:relative;z-index:2}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:var(--gold-tint);border:1px solid rgba(250,182,13,.22);border-radius:100px;padding:8px 20px;font-family:'Sora',sans-serif;font-size:.78rem;font-weight:600;color:var(--gold);margin-bottom:22px}
.hero h1{font-size:clamp(2.2rem,4.5vw,3.2rem);font-weight:800}
.hero h1 .n{color:var(--gold)}
.hero .lead{margin-top:18px;font-size:1.05rem;color:#c4d2e0;max-width:36ch;line-height:1.55}
.hero-search{margin-top:28px;position:relative;max-width:440px}
.hero-search input{width:100%;padding:14px 54px 14px 44px;border-radius:12px;border:none;background:#fff;color:var(--c-ink-900);font-size:.92rem;font-family:'Inter',sans-serif;outline:none;box-shadow:0 4px 20px rgba(0,0,0,.15)}
.hero-search input::placeholder{color:#a0aab4}
.hero-search .si{position:absolute;left:15px;top:50%;transform:translateY(-50%);width:18px;height:18px;color:#a0aab4}
.hero-search .sb{position:absolute;right:6px;top:50%;transform:translateY(-50%);width:36px;height:36px;border-radius:10px;background:var(--gold);border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .2s}
.hero-search .sb:hover{background:var(--gold-600)}
.hero-search .sb svg{width:15px;height:15px;color:var(--ink);stroke:currentColor;fill:none;stroke-width:2.2}
.hero-stats{display:flex;gap:36px;margin-top:36px}
.hero-stat .num{font-family:'Sora',sans-serif;font-size:1.5rem;font-weight:800;color:var(--gold)}
.hero-stat .lbl{font-size:.72rem;color:var(--slate);margin-top:1px}
.hero-img{width:100%;max-width:380px;height:auto;filter:drop-shadow(0 20px 40px rgba(0,0,0,.3))}

/* ========== CATEGORY NAV ========== */
.cat-nav{background:var(--paper);border-bottom:1px solid var(--line-light);position:sticky;top:68px;z-index:50;overflow-x:auto;-webkit-overflow-scrolling:touch}
.cat-nav-inner{max-width:var(--maxw);margin:0 auto;padding:0 24px;display:flex;gap:0}
.cat-tab{padding:14px 20px;font-family:'Sora',sans-serif;font-size:.8rem;font-weight:600;color:var(--c-ink-600);cursor:pointer;border-bottom:3px solid transparent;white-space:nowrap;transition:all .2s;background:none;border-top:none;border-left:none;border-right:none;display:flex;align-items:center;gap:6px}
.cat-tab:hover{color:var(--c-ink-900)}
.cat-tab.active{color:var(--gold-600);border-bottom-color:var(--gold)}

/* ========== HOMEPAGE SECTIONS ========== */
.cat-section{padding:44px 0 20px}
.cat-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:6px}
.cat-title{font-size:1.2rem;font-weight:700;display:flex;align-items:center;gap:10px}
.cat-desc{font-size:.84rem;color:var(--c-ink-600);margin-bottom:24px;max-width:520px;line-height:1.55}
.cat-count{font-size:.68rem;font-weight:700;color:var(--gold-600);background:var(--gold-tint);padding:4px 14px;border-radius:100px}

/* ========== TOOL CARDS (homepage grid) ========== */
.tools-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(270px,1fr));gap:14px;margin-bottom:16px}
.tool-card{border:1px solid var(--line-light);border-radius:var(--r);padding:20px;background:var(--paper);transition:all .25s;cursor:pointer;text-decoration:none;color:inherit;display:flex;gap:14px;align-items:flex-start}
.tool-card:hover{border-color:var(--gold);box-shadow:0 8px 28px -8px rgba(250,182,13,.12);transform:translateY(-2px)}
.tc-icon{width:42px;height:42px;border-radius:11px;display:flex;align-items:center;justify-content:center;font-size:20px;flex-shrink:0}
.ic-dev{background:linear-gradient(135deg,#ede4ff,#d4c4ff)}
.ic-css{background:linear-gradient(135deg,#dbeeff,#b8d9ff)}
.ic-text{background:linear-gradient(135deg,#fff3d6,#ffe8a8)}
.ic-img{background:linear-gradient(135deg,#ffe4db,#ffc9b8)}
.ic-learn{background:linear-gradient(135deg,#d6f5e0,#b0e8c4)}
.ic-calc{background:linear-gradient(135deg,#e0f0ff,#b8daff)}
.ic-yt{background:linear-gradient(135deg,#ffe0e0,#ffb8b8)}
.tc-body{flex:1;min-width:0}
.tc-name{font-family:'Sora',sans-serif;font-size:.84rem;font-weight:700;color:var(--c-ink-900);margin-bottom:3px}
.tc-desc{font-size:.74rem;color:var(--c-ink-600);line-height:1.45;margin-bottom:8px}
.tc-foot{display:flex;align-items:center;justify-content:space-between}
.tc-tags{display:flex;gap:4px;flex-wrap:wrap}
.tc-tag{font-size:.62rem;font-weight:600;padding:2px 8px;border-radius:100px;background:var(--paper-2);color:var(--c-ink-400)}
.tc-tag.pop{background:var(--gold-tint);color:var(--gold-600)}
.tc-arrow{width:22px;height:22px;border-radius:7px;background:var(--paper-2);display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:all .2s;font-size:12px;color:var(--c-ink-400)}
.tool-card:hover .tc-arrow{background:var(--gold);color:var(--ink)}

/* ========== DIVIDER ========== */
.section-divider{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.section-divider hr{border:none;border-top:1px solid var(--line-light)}

/* ========== CTA BANNER ========== */
.cta-section{padding:32px 0 64px}
.cta-inner{background:linear-gradient(135deg,var(--navy-900) 0%,#1a3050 100%);border-radius:20px;padding:48px;display:flex;align-items:center;justify-content:space-between;gap:32px;position:relative;overflow:hidden}
.cta-inner::before{content:'';position:absolute;top:-40px;right:-40px;width:200px;height:200px;background:radial-gradient(circle,rgba(250,182,13,.1) 0%,transparent 70%);pointer-events:none}
.cta-text h3{font-size:1.3rem;font-weight:700;color:#fff;margin-bottom:8px;position:relative}
.cta-text p{font-size:.9rem;color:var(--slate);line-height:1.6;position:relative;max-width:480px}
.cta-btn{display:inline-flex;align-items:center;gap:8px;font-family:'Sora',sans-serif;font-size:.9rem;font-weight:700;color:var(--ink);background:var(--gold);border:none;border-radius:12px;padding:14px 28px;cursor:pointer;white-space:nowrap;text-decoration:none;transition:background .2s;position:relative;flex-shrink:0}
.cta-btn:hover{background:var(--gold-600)}

/* ========== TOOL PAGE HEADER ========== */
.tool-hero{padding:92px 0 32px;border-bottom:1px solid var(--line-light)}
.tool-breadcrumb{display:flex;align-items:center;gap:8px;font-size:.78rem;color:var(--c-ink-400);margin-bottom:16px}
.tool-breadcrumb a{color:var(--gold-600);font-weight:600;transition:color .2s}
.tool-breadcrumb a:hover{color:var(--gold)}
.tool-title-row{display:flex;align-items:center;gap:16px}
.tool-icon{width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:26px;flex-shrink:0}
.tool-title{font-size:1.6rem;font-weight:800;letter-spacing:-.02em}
.tool-subtitle{font-size:.92rem;color:var(--c-ink-600);margin-top:8px;max-width:600px;line-height:1.5}

/* ========== TOOL BODY (individual tool pages) ========== */
.tool-body{padding:32px 0 48px}
.tool-card{background:var(--paper);border:1px solid var(--line-light);border-radius:var(--r);padding:28px;margin-bottom:20px;box-shadow:0 2px 8px rgba(0,0,0,.04)}
.tool-card h3{font-size:1rem;margin-bottom:16px;display:flex;align-items:center;gap:8px}
.tool-label{display:block;font-family:'Sora',sans-serif;font-weight:600;font-size:.82rem;margin-bottom:8px;color:var(--c-ink-900)}
.tool-input,.tool-textarea{width:100%;border:1.5px solid var(--line-light);border-radius:11px;padding:12px 14px;font-family:'Inter',sans-serif;font-size:.92rem;color:var(--c-ink-900);background:#fff;transition:border-color .15s}
.tool-input:focus,.tool-textarea:focus{outline:none;border-color:var(--gold)}
.tool-textarea{min-height:140px;resize:vertical;font-family:'JetBrains Mono','Fira Code',monospace}
.tool-row{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:16px}
.tool-col{flex:1;min-width:200px}
.tool-btn{display:inline-flex;align-items:center;gap:8px;font-family:'Sora',sans-serif;font-weight:700;font-size:.88rem;padding:12px 24px;border-radius:12px;border:none;cursor:pointer;transition:all .2s}
.tool-btn-gold{background:var(--gold);color:#231a02}
.tool-btn-gold:hover{background:var(--gold-600)}
.tool-btn-outline{background:transparent;color:var(--c-ink-900);border:1.5px solid var(--line-light)}
.tool-btn-outline:hover{border-color:var(--c-ink-900)}
.tool-btn-sm{padding:8px 16px;font-size:.78rem}
.tool-output{background:var(--paper-2);border:1px solid var(--line-light);border-radius:11px;padding:16px;font-family:'JetBrains Mono','Fira Code',monospace;font-size:.82rem;color:var(--c-ink-900);word-break:break-all;min-height:60px;position:relative}
.tool-output-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}
.tool-copy-btn{font-family:'Sora',sans-serif;font-weight:600;font-size:.72rem;padding:5px 12px;border-radius:8px;border:1px solid var(--line-light);background:var(--paper);color:var(--c-ink-600);cursor:pointer;transition:all .2s}
.tool-copy-btn:hover{border-color:var(--gold);color:var(--gold-600)}
.tool-copy-btn.copied{background:var(--gold-tint);border-color:var(--gold);color:var(--gold-600)}
.tool-select{border:1.5px solid var(--line-light);border-radius:11px;padding:10px 14px;font-family:'Inter',sans-serif;font-size:.88rem;color:var(--c-ink-900);background:#fff;outline:none;cursor:pointer;transition:border-color .15s}
.tool-select:focus{border-color:var(--gold)}
.tool-range{width:100%;accent-color:var(--gold)}
.tool-toggle{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:12px}
.tool-toggle label{display:flex;align-items:center;gap:6px;font-size:.82rem;font-weight:500;cursor:pointer;padding:6px 12px;border:1px solid var(--line-light);border-radius:8px;transition:all .2s}
.tool-toggle label:hover{border-color:var(--gold)}
.tool-toggle input:checked+span{color:var(--gold-600)}
.tool-toggle input{accent-color:var(--gold)}
.tool-tabs{display:flex;gap:0;margin-bottom:20px;border-bottom:2px solid var(--line-light)}
.tool-tab{padding:10px 20px;font-family:'Sora',sans-serif;font-size:.82rem;font-weight:600;color:var(--c-ink-400);cursor:pointer;border-bottom:2px solid transparent;margin-bottom:-2px;transition:all .2s;background:none;border-top:none;border-left:none;border-right:none}
.tool-tab.active{color:var(--gold-600);border-bottom-color:var(--gold)}
.tool-notice{background:var(--gold-tint);border:1px solid rgba(250,182,13,.22);border-radius:11px;padding:12px 16px;font-size:.82rem;color:var(--gold-600);font-weight:500;display:flex;align-items:center;gap:8px;margin-bottom:16px}
.tool-grid-2{display:grid;grid-template-columns:1fr 1fr;gap:20px}

/* ========== AD SLOT ========== */
.ad-slot{margin:24px 0}
.ad-inner{background:var(--paper-2);border:1px dashed var(--line-light);border-radius:12px;padding:20px;text-align:center;font-size:.72rem;color:var(--c-ink-400);font-family:'Sora',sans-serif}

/* ========== RELATED TOOLS ========== */
.related{padding:32px 0;border-top:1px solid var(--line-light)}
.related h3{font-size:1rem;margin-bottom:16px}
.related-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:12px}
.related-card{border:1px solid var(--line-light);border-radius:12px;padding:14px;display:flex;gap:10px;align-items:center;transition:all .2s}
.related-card:hover{border-color:var(--gold);transform:translateY(-1px)}
.related-card .rc-icon{width:36px;height:36px;border-radius:9px;display:flex;align-items:center;justify-content:center;font-size:18px;flex-shrink:0}
.related-card .rc-name{font-family:'Sora',sans-serif;font-size:.8rem;font-weight:700}
.related-card .rc-desc{font-size:.7rem;color:var(--c-ink-400)}

/* ========== FOOTER ========== */
.footer{background:var(--navy-900);color:var(--slate);padding:56px 0 0}
.footer::before{content:'';display:block;height:2px;background:linear-gradient(90deg,transparent,var(--gold),transparent)}
.footer-grid{display:grid;grid-template-columns:1.5fr repeat(4,1fr);gap:40px;padding:48px 0 40px}
.footer-brand .wm{font-family:'Sora',sans-serif;font-weight:700;font-size:1.2rem;color:#fff}
.footer-brand .wm .n{color:var(--gold)}
.footer-brand .tag{font-size:.52rem;letter-spacing:.34em;color:var(--slate);margin-top:3px;font-family:'Sora',sans-serif;font-weight:500}
.footer-brand p{font-size:.82rem;color:var(--c-ink-400);margin-top:14px;max-width:240px;line-height:1.5}
.footer-col h4{font-family:'Sora',sans-serif;font-weight:700;font-size:.78rem;color:#fff;margin-bottom:14px}
.footer-col a{display:block;font-size:.78rem;color:var(--c-ink-400);margin-bottom:8px;transition:color .2s}
.footer-col a:hover{color:var(--gold)}
.footer-bottom{border-top:1px solid var(--line-dark);padding:20px 0;display:flex;justify-content:space-between;align-items:center;font-size:.76rem;flex-wrap:wrap;gap:12px}
.footer-bottom a{color:var(--c-ink-400);transition:color .2s}
.footer-bottom a:hover{color:var(--gold)}

/* ========== MOBILE ========== */
@media(max-width:900px){
  .hero-grid{grid-template-columns:1fr;text-align:center}
  .hero-img{display:none}
  .hero .lead{margin-left:auto;margin-right:auto}
  .hero-search{margin-left:auto;margin-right:auto}
  .hero-stats{justify-content:center}
  .tool-grid-2{grid-template-columns:1fr}
  .cta-inner{flex-direction:column;padding:28px 20px;text-align:center}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
  .nav-links{display:none}
  .burger{display:block}
  .hero{padding:90px 0 48px}
  .hero h1{font-size:1.8rem}
  .hero .lead{font-size:.92rem}
  .hero-stats{gap:20px;flex-wrap:wrap}
  .hero-stat .num{font-size:1.2rem}
  .cat-nav-inner{padding:0 16px}
  .cat-section{padding:28px 0 12px}
  .tools-grid{grid-template-columns:1fr;gap:10px}
  .tool-hero{padding:82px 0 24px}
  .tool-title{font-size:1.3rem}
  .tool-card{padding:20px}
  .tool-row{flex-direction:column}
  .related-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .footer-bottom{flex-direction:column;text-align:center}
}