@font-face{font-family:'Inter Tight';src:url('../fonts/InterTight-VariableFont_wght.ttf') format('truetype');font-weight:100 900;font-style:normal;font-display:swap}
@font-face{font-family:'Inter Tight';src:url('../fonts/InterTight-Italic-VariableFont_wght.ttf') format('truetype');font-weight:100 900;font-style:italic;font-display:swap}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}

/* ═══ BRAND — Light default, Dark optional ═══ */
:root{
--bg:#f7f9fc;--bg2:#eef3fb;--card:#ffffff;--card2:#f3f6fb;
--border:#dbe4f0;--border2:#c7d4e6;
--t1:#0b1220;--t2:#334155;--t3:#64748b;
--accent:#2563eb;--accent2:#1d4ed8;--accentG:rgba(37,99,235,.08);
--em:#16a34a;--vi:#7c3aed;--am:#d97706;--ro:#e11d48;
--r:16px;--maxW:1120px;
--inputBg:rgba(15,23,42,.04);--hoverBg:rgba(15,23,42,.03);
--trend-svg:url("data:image/svg+xml,%3Csvg width='120' height='40' viewBox='0 0 120 40' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M0 35 L20 20 L40 28 L60 10 L80 22 L100 5 L120 15' stroke='%232563eb' stroke-width='1.4' stroke-linecap='round' stroke-linejoin='round' opacity='.05'/%3E%3C/svg%3E")
}
[data-theme="dark"]{
--bg:#060b18;--bg2:#0b1226;--card:#0f172a;--card2:#162032;
--border:#1e293b;--border2:#334155;
--t1:#f1f5f9;--t2:#cbd5e1;--t3:#94a3b8;
--accent:#60a5fa;--accent2:#3b82f6;--accentG:rgba(96,165,250,.12);
--em:#34d399;--vi:#a78bfa;--am:#fbbf24;--ro:#fb7185;
--inputBg:rgba(255,255,255,.06);--hoverBg:rgba(255,255,255,.05);
--trend-svg:url("data:image/svg+xml,%3Csvg width='120' height='40' viewBox='0 0 120 40' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M0 35 L20 20 L40 28 L60 10 L80 22 L100 5 L120 15' stroke='%2360a5fa' stroke-width='1.4' stroke-linecap='round' stroke-linejoin='round' opacity='.05'/%3E%3C/svg%3E")
}
html{scroll-behavior:smooth}
body{font-family:'Inter Tight',system-ui,sans-serif;background:var(--bg);color:var(--t1);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden;transition:background .25s,color .25s}
a{color:var(--accent);text-decoration:none}a:hover{color:var(--accent2)}

/* ═══ NAVBAR ═══ */
.navbar{position:fixed;top:0;left:0;right:0;z-index:100;background:color-mix(in srgb,var(--bg) 92%,transparent);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}
.navbar::before{content:'';position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,var(--accent),#7c3aed,var(--em));opacity:.85}
.nav-inner{max-width:var(--maxW);margin:0 auto;padding:0 24px;display:flex;align-items:center;height:58px;gap:8px}
.nav-logo{display:flex;align-items:center;gap:10px;cursor:pointer;flex-shrink:0;margin-right:24px}
.nav-logo-icon{width:32px;height:32px;border-radius:9px;background:linear-gradient(135deg,var(--accent),#7c3aed);display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:transform .3s,box-shadow .3s}
.nav-logo-icon:hover{transform:scale(1.06) rotate(-2deg);box-shadow:0 4px 16px rgba(37,99,235,.18)}
.nav-logo-icon svg{width:19px;height:19px}
.nav-logo-text{font-size:16px;font-weight:900;letter-spacing:-.03em;color:var(--t1)}
.nav-links{display:flex;align-items:center;gap:2px;flex:1}
.nav-link{padding:8px 14px;border-radius:8px;font-size:13px;font-weight:600;color:var(--t2);cursor:pointer;transition:all .15s;white-space:nowrap;position:relative}
.nav-link:hover{color:var(--t1);background:var(--hoverBg)}
.nav-link.on{color:var(--accent)}
.nav-link.on::after{content:'';position:absolute;bottom:-1px;left:14px;right:14px;height:2px;background:var(--accent);border-radius:2px}
.nav-dd{position:relative}
.nav-dd-menu{position:absolute;top:calc(100% + 8px);left:0;min-width:200px;background:var(--card);border:1px solid var(--border);border-radius:12px;padding:6px;opacity:0;visibility:hidden;transform:translateY(-4px);transition:all .2s;box-shadow:0 12px 40px rgba(0,0,0,.1);z-index:110}
.nav-dd:hover .nav-dd-menu{opacity:1;visibility:visible;transform:translateY(0)}
.nav-dd-item{display:flex;align-items:center;gap:10px;padding:10px 14px;border-radius:8px;font-size:13px;font-weight:500;color:var(--t2);cursor:pointer;transition:all .12s}
.nav-dd-item:hover{background:var(--hoverBg);color:var(--t1)}
.nav-dd-item svg{width:16px;height:16px;opacity:.5;flex-shrink:0}
.nav-right{display:flex;align-items:center;gap:8px;margin-left:auto}
.nav-search{display:flex;align-items:center;gap:8px;padding:7px 14px;background:var(--inputBg);border:1px solid var(--border);border-radius:8px;width:180px;transition:all .2s}
.nav-search:focus-within{border-color:color-mix(in srgb,var(--accent) 50%,var(--border));box-shadow:0 0 0 3px var(--accentG);width:240px}
.nav-search input{background:none;border:none;outline:none;font-size:12px;color:var(--t1);font-family:inherit;width:100%}
.nav-search svg{width:14px;height:14px;color:var(--t3);flex-shrink:0}
.theme-btn{width:34px;height:34px;display:flex;align-items:center;justify-content:center;border-radius:8px;border:1px solid var(--border);background:var(--inputBg);color:var(--t2);cursor:pointer;transition:all .15s}
.theme-btn:hover{color:var(--accent);border-color:var(--accent)}
.nav-hamburger{display:none;width:34px;height:34px;align-items:center;justify-content:center;border:none;background:none;color:var(--t1);cursor:pointer}
.mobile-menu{display:none;position:fixed;top:61px;left:0;right:0;bottom:0;background:var(--bg);z-index:99;padding:16px;overflow-y:auto}
.mobile-menu.open{display:block}
.mobile-menu a{display:block;padding:12px 16px;font-size:15px;font-weight:600;color:var(--t2);border-radius:10px;cursor:pointer}
.mobile-menu a:hover,.mobile-menu a.on{color:var(--t1);background:var(--hoverBg)}
.mm-group{font-size:10px;font-weight:800;text-transform:uppercase;letter-spacing:.1em;color:var(--t3);padding:16px 16px 6px}
@media(max-width:900px){.nav-links{display:none}.nav-hamburger{display:flex}.nav-search{display:none}}
.search-results{position:absolute;top:calc(100% + 4px);right:0;width:320px;background:var(--card);border:1px solid var(--border);border-radius:12px;padding:6px;box-shadow:0 12px 40px rgba(0,0,0,.1);display:none;z-index:120;max-height:400px;overflow-y:auto}
.search-results.show{display:block}
.sr-item{padding:10px 12px;border-radius:8px;cursor:pointer;transition:background .12s}
.sr-item:hover{background:var(--hoverBg)}
.sr-cat{font-size:9px;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--accent);margin-bottom:2px}
.sr-title{font-size:13px;font-weight:600;color:var(--t1)}

/* ═══ MAIN ═══ */
.main{padding-top:61px;min-height:100vh;position:relative}
.main::before{content:'';position:fixed;inset:0;background:var(--trend-svg);background-size:160px 50px;opacity:.25;pointer-events:none;z-index:0}
.wrap{max-width:var(--maxW);margin:0 auto;padding:0 24px;position:relative;z-index:1}
.sec{display:none}.sec.on{display:block;animation:fadeUp .3s ease}
@keyframes fadeUp{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}

/* ═══ HERO — light, radial glow ═══ */
.hero{position:relative;overflow:hidden;border-radius:18px;padding:48px 44px;margin:24px 0;
background:radial-gradient(700px 350px at 10% 20%,rgba(37,99,235,.12),transparent 55%),radial-gradient(600px 320px at 85% 30%,rgba(124,58,237,.08),transparent 55%),radial-gradient(400px 200px at 50% 80%,rgba(22,163,74,.05),transparent 60%),var(--card);
border:1px solid var(--border);box-shadow:0 1px 2px rgba(0,0,0,.03)}
[data-theme="dark"] .hero{background:radial-gradient(700px 350px at 10% 20%,rgba(96,165,250,.06),transparent 55%),radial-gradient(600px 320px at 85% 30%,rgba(167,139,250,.05),transparent 55%),var(--card)}
.hero::before{content:'';position:absolute;inset:0;background-image:linear-gradient(rgba(37,99,235,.025) 1px,transparent 1px),linear-gradient(90deg,rgba(37,99,235,.025) 1px,transparent 1px);background-size:48px 48px;mask-image:radial-gradient(ellipse 70% 60% at 50% 50%,black,transparent);pointer-events:none}
.hero-content{position:relative;z-index:2;max-width:600px}
.hero-badge{display:inline-flex;align-items:center;gap:6px;padding:5px 14px;border-radius:100px;font-size:10px;font-weight:700;margin-bottom:18px;background:var(--accentG);border:1px solid color-mix(in srgb,var(--accent) 12%,transparent);color:var(--accent)}
.hero h1{font-size:40px;font-weight:900;line-height:1.12;letter-spacing:-.04em;margin-bottom:14px;color:var(--t1)}
.hero h1 span{background:linear-gradient(135deg,var(--accent),#7c3aed);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.hero-desc{font-size:15px;color:var(--t2);line-height:1.75;margin-bottom:24px;max-width:520px}
.hero-desc strong{color:var(--t1)}
.hero-features{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:28px}
.hero-feat{display:flex;align-items:center;gap:5px;font-size:12px;color:var(--t3);font-weight:600}
.hero-feat svg{width:14px;height:14px;color:var(--em)}
.hero-ctas{display:flex;gap:10px;flex-wrap:wrap}
.start-here{display:flex;gap:12px;margin-top:32px;flex-wrap:wrap}
.start-step{display:flex;align-items:flex-start;gap:10px;padding:13px 16px;background:var(--bg);border:1px solid var(--border);border-radius:12px;flex:1;min-width:160px;cursor:pointer;transition:all .2s}
.start-step:hover{border-color:var(--accent);background:var(--accentG);transform:translateY(-1px)}
.start-num{width:24px;height:24px;border-radius:7px;background:var(--accentG);display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:800;color:var(--accent);flex-shrink:0}
.start-label{font-size:12px;font-weight:700;color:var(--t1);margin-bottom:1px}
.start-sub{font-size:11px;color:var(--t3);line-height:1.4}
@media(max-width:640px){.hero{padding:32px 24px}.hero h1{font-size:28px}.start-here{flex-direction:column}}

/* ═══ SECTION HEADERS ═══ */
.sh{margin-bottom:28px;position:relative;padding-left:18px}
.sh::before{content:'';position:absolute;left:0;top:3px;width:4px;height:28px;border-radius:4px;background:linear-gradient(180deg,var(--accent),var(--vi))}
.sh h2{font-size:26px;font-weight:900;letter-spacing:-.03em;margin-bottom:3px;color:var(--t1)}
.sh p{font-size:14px;color:var(--t3);font-weight:500}

/* ═══ CARDS ═══ */
.cd{background:var(--card);border:1px solid var(--border);border-radius:var(--r);transition:all .2s;overflow:hidden;box-shadow:0 1px 2px rgba(0,0,0,.03)}
.cd:hover{border-color:var(--border2);transform:translateY(-2px);box-shadow:0 8px 24px rgba(0,0,0,.06)}

/* ═══ GRIDS ═══ */
.g2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.g3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.g4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
@media(max-width:900px){.g3{grid-template-columns:1fr 1fr}.g4{grid-template-columns:1fr 1fr}}
@media(max-width:640px){.g2,.g3,.g4{grid-template-columns:1fr}}

/* ═══ BUTTONS ═══ */
.btn{display:inline-flex;align-items:center;gap:7px;padding:10px 22px;border-radius:10px;font-weight:700;font-size:13px;border:none;cursor:pointer;font-family:inherit;transition:all .2s}
.btn-w{background:var(--t1);color:var(--card)}.btn-w:hover{opacity:.9;transform:translateY(-1px)}
.btn-g{background:var(--inputBg);border:1px solid var(--border);color:var(--t2)}.btn-g:hover{border-color:var(--border2);color:var(--t1)}
.btn-a{background:linear-gradient(135deg,var(--accent2),#7c3aed);color:#fff;box-shadow:0 4px 16px rgba(37,99,235,.15)}.btn-a:hover{transform:translateY(-1px);box-shadow:0 8px 24px rgba(37,99,235,.2)}
.btn-sm{font-size:12px;padding:8px 16px}
.btn-outline{background:none;border:1.5px solid var(--border);color:var(--t2)}.btn-outline:hover{border-color:var(--accent);color:var(--accent);background:var(--accentG)}
.bd{display:inline-block;padding:4px 12px;border-radius:100px;font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.04em}
.bd-s{background:rgba(37,99,235,.06);color:var(--accent)}.bd-e{background:rgba(22,163,74,.06);color:var(--em)}
.bd-v{background:rgba(124,58,237,.06);color:var(--vi)}.bd-a{background:rgba(217,119,6,.06);color:var(--am)}
.bd-r{background:rgba(225,29,72,.06);color:var(--ro)}.bd-o{background:rgba(234,88,12,.06);color:#ea580c}
.flt{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:20px}
.fb{padding:7px 18px;border-radius:100px;font-size:12px;font-weight:600;background:var(--inputBg);border:1px solid var(--border);color:var(--t2);cursor:pointer;font-family:inherit;transition:all .2s}
.fb:hover{color:var(--t1);border-color:var(--border2)}
.fb.on{background:var(--accent);color:#fff;border-color:var(--accent);font-weight:700;box-shadow:0 2px 8px rgba(37,99,235,.18)}
.blog-card{cursor:pointer;overflow:hidden}.blog-card:hover{box-shadow:0 10px 32px rgba(0,0,0,.07)}.blog-card:hover .blog-thumb{transform:scale(1.04)}
.tools-strip{display:flex;flex-direction:column;border-radius:var(--r);overflow:hidden;background:var(--card);border:1px solid var(--border);box-shadow:var(--shadow)}
.ts-item{display:flex;align-items:center;gap:16px;padding:16px 20px;cursor:pointer;transition:background .15s,border-color .15s;border-bottom:1px solid var(--border);position:relative}
.ts-item:last-child{border-bottom:none}
.ts-item:hover{background:color-mix(in srgb,var(--tc) 5%,transparent)}
.ts-item:hover .ts-arrow{opacity:1;transform:translateX(2px)}
.ts-item::before{content:'';position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--tc);opacity:0;transition:opacity .15s}
.ts-item:hover::before{opacity:1}
.ts-icon{width:38px;height:38px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:17px;flex-shrink:0;box-shadow:0 2px 8px rgba(0,0,0,.1)}
.ts-text{flex:1;min-width:0}
.ts-name{font-size:14px;font-weight:800;color:var(--t1);letter-spacing:-.01em}
.ts-desc{font-size:12px;color:var(--t3);margin-top:1px}
.ts-arrow{width:18px;height:18px;color:var(--t3);opacity:0;transition:opacity .15s,transform .15s;flex-shrink:0}
#crawlViewToggle{gap:4px}#crawlViewToggle .fb{margin:0;border-radius:6px}
.ed-label{display:block;font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:var(--t3);margin-bottom:5px}
.ed-label+select{width:100%;padding:10px 12px;border-radius:var(--r);border:1px solid var(--border);background:var(--inputBg);color:var(--t1);font-size:13px;font-family:inherit;appearance:auto;cursor:pointer}
@media(min-width:768px){.tools-strip{flex-direction:row}.ts-item{flex:1;border-bottom:none;border-right:1px solid var(--border);padding:20px 22px;flex-direction:column;text-align:center;gap:10px}.ts-item:last-child{border-right:none}.ts-item::before{left:0;right:0;top:0;bottom:auto;width:auto;height:3px}.ts-arrow{display:none}.ts-icon{margin:0 auto}}
.blog-thumb{height:160px;position:relative;overflow:hidden;transition:transform .4s;display:flex;align-items:center;justify-content:center}
.blog-thumb svg{width:100%;height:100%;display:block}
.blog-meta{padding:20px}
.blog-tag{font-size:9px;font-weight:700;text-transform:uppercase;letter-spacing:.06em;margin-bottom:8px}
.blog-title{font-size:16px;font-weight:800;letter-spacing:-.02em;margin-bottom:6px;line-height:1.3;color:var(--t1)}
.blog-desc{font-size:13px;color:var(--t2);line-height:1.6;margin-bottom:12px}
.blog-footer{display:flex;align-items:center;justify-content:space-between;font-size:11px;color:var(--t3)}
.dl-card{padding:24px;position:relative;overflow:hidden;cursor:pointer}.dl-card:hover{border-color:var(--accent);transform:translateY(-2px)}
.dl-icon{width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:22px;margin-bottom:14px;transition:transform .3s}.dl-card:hover .dl-icon{transform:scale(1.08)}
.dl-title{font-size:15px;font-weight:800;margin-bottom:6px;color:var(--t1)}.dl-desc{font-size:13px;color:var(--t2);line-height:1.6;margin-bottom:16px}
.dl-btn{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;border-radius:8px;font-size:12px;font-weight:700;background:var(--accentG);color:var(--accent);border:1px solid color-mix(in srgb,var(--accent) 12%,transparent);transition:all .2s}
.dl-btn:hover{background:color-mix(in srgb,var(--accent) 10%,transparent)}
.dl-format{position:absolute;top:16px;right:16px;font-size:9px;font-weight:700;text-transform:uppercase;letter-spacing:.06em;padding:3px 8px;border-radius:6px;background:var(--inputBg);color:var(--t3)}
.guide-card{padding:24px;cursor:pointer}.guide-card:hover{border-color:color-mix(in srgb,var(--accent) 25%,var(--border))}
.guide-num{width:32px;height:32px;border-radius:8px;background:var(--accentG);display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:800;color:var(--accent);margin-bottom:12px}
.guide-title{font-size:15px;font-weight:800;margin-bottom:6px;color:var(--t1)}.guide-desc{font-size:13px;color:var(--t2);line-height:1.6}
.tool-panel{background:var(--card);border:1px solid var(--border);border-radius:var(--r);padding:24px;position:relative;overflow:hidden}
.tool-panel::before{content:'';position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,var(--accent),var(--vi))}
.tool-panel h3{font-size:15px;font-weight:800;margin-bottom:16px}
.tool-panel label{display:block;font-size:11px;font-weight:700;color:var(--t3);text-transform:uppercase;letter-spacing:.06em;margin:14px 0 6px}
.tool-panel input,.tool-panel textarea,.tool-panel select{width:100%;padding:10px 14px;background:var(--inputBg);border:1px solid var(--border);border-radius:8px;font-size:13px;color:var(--t1);font-family:inherit;outline:none;transition:all .2s;resize:vertical}
.tool-panel input:focus,.tool-panel textarea:focus{border-color:color-mix(in srgb,var(--accent) 50%,var(--border));box-shadow:0 0 0 3px var(--accentG)}
.result-box{background:var(--bg2);border:1px solid var(--border);border-radius:10px;padding:16px;margin-top:12px;font-family:'JetBrains Mono',monospace;font-size:11px;color:var(--em);white-space:pre-wrap;word-break:break-all;max-height:300px;overflow:auto}
.char-count{font-size:10px;font-weight:600;float:right}.char-ok{color:var(--em)}.char-warn{color:var(--am)}.char-over{color:var(--ro)}
.serp-preview{background:#fff;border-radius:12px;padding:16px 20px;max-width:600px;border:1px solid #e5e7eb}
.serp-url{font-size:13px;color:#202124;margin-bottom:2px;font-family:Arial,sans-serif}.serp-title{font-size:18px;color:#1a0dab;font-family:Arial,sans-serif;margin-bottom:4px;cursor:pointer;line-height:1.3}.serp-desc{font-size:13px;color:#4d5156;line-height:1.5;font-family:Arial,sans-serif;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.score-circle{width:100px;height:100px;border-radius:50%;display:flex;align-items:center;justify-content:center;margin:0 auto 16px;position:relative}
.score-circle span{font-size:28px;font-weight:900;position:relative;z-index:1}
.score-circle::after{content:'';position:absolute;inset:6px;border-radius:50%;background:var(--card)}
.wf-step{border:1px solid var(--border);border-radius:var(--r);margin-bottom:8px;overflow:hidden;transition:border-color .2s}.wf-step.active{border-color:var(--accent)}.wf-step.done{border-color:var(--em)}
.wf-head{display:flex;align-items:center;gap:12px;padding:16px 20px;cursor:pointer;transition:background .15s}.wf-head:hover{background:var(--hoverBg)}
.wf-num{width:28px;height:28px;border-radius:8px;background:var(--inputBg);display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;color:var(--t2);flex-shrink:0}
.wf-step.done .wf-num{background:rgba(22,163,74,.06);color:var(--em)}
.wf-body{display:none;padding:0 20px 20px}.wf-step.active .wf-body{display:block}
.wf-tip{background:var(--bg2);border-radius:10px;padding:14px 16px;font-size:12px;color:var(--t2);line-height:1.7}.wf-tip ul{margin:6px 0 0 16px}.wf-tip li{margin-bottom:4px}
.check-row{display:flex;align-items:center;gap:10px;padding:8px 12px;border:1px solid var(--border);border-radius:8px;margin-bottom:4px;font-size:12px;color:var(--t2);cursor:pointer;transition:all .15s}
.check-row:hover{border-color:var(--border2)}.check-row.checked{border-color:var(--em);background:rgba(22,163,74,.04);color:var(--em)}.check-row input{accent-color:var(--em)}
.gloss-item{padding:14px 18px;border-bottom:1px solid var(--border);cursor:pointer;transition:background .12s}.gloss-item:hover{background:var(--hoverBg)}.gloss-item:last-child{border:none}
.gloss-term{font-size:14px;font-weight:700;margin-bottom:2px;color:var(--accent)}.gloss-def{font-size:13px;color:var(--t2);line-height:1.6;max-height:0;overflow:hidden;transition:max-height .3s}.gloss-item.open .gloss-def{max-height:200px}
.cmp-table{width:100%;border-collapse:collapse;font-size:12px}
.cmp-table th{text-align:left;padding:10px 14px;font-size:10px;font-weight:800;text-transform:uppercase;letter-spacing:.06em;color:var(--t3);background:var(--bg2);border-bottom:1px solid var(--border)}
.cmp-table td{padding:10px 14px;border-bottom:1px solid var(--border);color:var(--t2)}.cmp-table td:first-child{font-weight:700;color:var(--accent)}.cmp-table tr:hover td{background:var(--hoverBg)}
.article-wrap{max-width:720px}
.article-back{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;color:var(--t2);cursor:pointer;margin-bottom:16px;padding:6px 12px;border-radius:8px;transition:all .15s}.article-back:hover{background:var(--hoverBg);color:var(--t1)}
.article-banner{border-radius:14px;overflow:hidden;margin-bottom:24px;border:1px solid var(--border)}
.article-banner svg{width:100%;height:auto;display:block}
.article-body{font-size:14px;color:var(--t2);line-height:1.8}
.article-body h3{font-size:20px;font-weight:800;color:var(--t1);margin:24px 0 12px}.article-body h4{font-size:15px;font-weight:700;color:var(--t1);margin:18px 0 8px}
.article-body ul,.article-body ol{margin:8px 0 12px 20px}.article-body li{margin-bottom:6px}.article-body strong{color:var(--t1)}
.article-body code{background:var(--bg2);padding:2px 6px;border-radius:4px;font-size:12px;font-family:'JetBrains Mono',monospace}
.article-body pre{background:var(--bg2);padding:16px;border-radius:10px;overflow-x:auto;font-size:12px;font-family:'JetBrains Mono',monospace;margin:12px 0}
.article-body .tip{background:var(--accentG);border-left:3px solid var(--accent);padding:14px 18px;border-radius:0 10px 10px 0;margin:12px 0;font-size:13px}
.quiz-box{background:var(--card);border:1px solid var(--border);border-radius:var(--r);padding:20px;margin:16px 0}.quiz-q{font-size:14px;font-weight:700;margin-bottom:12px}
.quiz-opt{width:100%;padding:12px 16px;text-align:left;background:none;border:1px solid var(--border);border-radius:10px;font-size:13px;color:var(--t2);cursor:pointer;font-family:inherit;margin-bottom:6px;transition:all .2s}
.quiz-opt:hover:not(:disabled){border-color:var(--accent);background:var(--accentG)}
.quiz-opt.correct{border-color:var(--em);background:rgba(22,163,74,.04);color:var(--em)}.quiz-opt.wrong{border-color:var(--ro);background:rgba(225,29,72,.04);color:var(--ro)}
.quiz-exp{display:none;padding:10px 14px;background:rgba(22,163,74,.04);border-radius:8px;font-size:12px;color:var(--em);margin-top:8px}.quiz-exp.show{display:block}
.nl{background:var(--card);border:1px solid var(--border);border-radius:18px;padding:36px;text-align:center;margin-top:40px;position:relative;overflow:hidden}
.nl::before{content:'';position:absolute;inset:0;background:var(--trend-svg);background-size:120px 40px;opacity:.4;pointer-events:none}
.nl::after{content:'';position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,var(--accent),var(--vi),var(--em))}
.nl h3{font-size:20px;font-weight:900;letter-spacing:-.03em;margin-bottom:6px;position:relative;color:var(--t1)}
.nl p{font-size:13px;color:var(--t2);margin-bottom:18px;position:relative}
.nl-form{display:flex;gap:8px;max-width:380px;margin:0 auto;position:relative;z-index:1;flex-wrap:wrap;justify-content:center}
.nl-form input{flex:1;padding:10px 16px;background:var(--inputBg);border:1px solid var(--border);border-radius:10px;font-size:13px;color:var(--t1);font-family:inherit;outline:none;min-width:180px}.nl-form input:focus{border-color:var(--accent)}
.site-footer{margin-top:60px;padding:44px 0 20px;position:relative;background:var(--bg2)}
.site-footer::before{content:'';position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,var(--accent),var(--vi),var(--em))}
.site-footer::after{content:'';position:absolute;top:16px;left:0;right:0;bottom:0;background:var(--trend-svg);background-size:120px 40px;opacity:.15;pointer-events:none}
.ft-inner{max-width:var(--maxW);margin:0 auto;padding:0 24px;position:relative;z-index:1}
.ft-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px;margin-bottom:32px}
@media(max-width:768px){.ft-grid{grid-template-columns:1fr 1fr;gap:20px}}@media(max-width:480px){.ft-grid{grid-template-columns:1fr}}
.ft-brand{display:flex;align-items:center;gap:10px;margin-bottom:12px}
.ft-brand-icon{width:30px;height:30px;border-radius:8px;background:linear-gradient(135deg,var(--accent),#7c3aed);display:flex;align-items:center;justify-content:center;flex-shrink:0}.ft-brand-icon svg{width:17px;height:17px}
.ft-brand-name{font-size:15px;font-weight:900;letter-spacing:-.02em}
.ft-desc{font-size:13px;color:var(--t3);line-height:1.7;margin-bottom:14px;max-width:280px}
.ft-socials{display:flex;gap:8px}
.ft-social{width:32px;height:32px;border-radius:8px;background:var(--inputBg);border:1px solid var(--border);display:flex;align-items:center;justify-content:center;transition:all .2s;cursor:pointer}
.ft-social:hover{border-color:var(--accent);background:var(--accentG);transform:translateY(-2px)}.ft-social svg{width:14px;height:14px;color:var(--t3)}.ft-social:hover svg{color:var(--accent)}
.ft-col h4{font-size:10px;font-weight:800;text-transform:uppercase;letter-spacing:.1em;color:var(--t3);margin-bottom:12px}
.ft-col a{display:block;font-size:13px;color:var(--t2);padding:4px 0;cursor:pointer;font-weight:500;transition:all .12s}.ft-col a:hover{color:var(--accent);padding-left:3px}
.ft-bottom{display:flex;align-items:center;justify-content:space-between;padding-top:16px;border-top:1px solid var(--border);font-size:11px;color:var(--t3);flex-wrap:wrap;gap:8px}.ft-bottom a{color:var(--accent);cursor:pointer;font-weight:600}
.fx{display:flex}.ac{align-items:center}.jb{justify-content:space-between}.fw{flex-wrap:wrap}.g6{gap:6px}.g8{gap:8px}.g10{gap:10px}
.stagger>*{animation:fadeUp .3s ease backwards}.stagger>*:nth-child(2){animation-delay:.04s}.stagger>*:nth-child(3){animation-delay:.08s}.stagger>*:nth-child(4){animation-delay:.12s}
.btt{position:fixed;bottom:24px;right:24px;width:38px;height:38px;border-radius:50%;background:var(--card);border:1px solid var(--border);color:var(--t2);display:flex;align-items:center;justify-content:center;cursor:pointer;opacity:0;transform:translateY(10px);transition:all .3s;z-index:50;box-shadow:0 2px 8px rgba(0,0,0,.06)}
.btt.show{opacity:1;transform:translateY(0)}.btt:hover{border-color:var(--accent);color:var(--accent)}
::selection{background:rgba(37,99,235,.1)}
::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border2);border-radius:10px}::-webkit-scrollbar-thumb:hover{background:var(--accent)}

/* ═══ MODERN UI OVERRIDES (Safe Additions) ═══ */
.section-spacing { margin-top: 70px; margin-bottom: 70px; }
.cd:hover, .start-step:hover, .ts-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 30px -10px rgba(0,0,0,0.12);
    border-color: var(--accent);
}
.ts-arrow { width: 20px; height: 20px; opacity: 0.5; }
.ts-item:hover .ts-arrow { opacity: 1; transform: translateX(3px); color: var(--accent); }