:root{--bg:#2C3153;--bg-card:rgba(44,49,83,0.60);--bg-alt:rgba(38,42,72,0.65);--bg-elevated:rgba(50,55,90,0.80);--glass:rgba(44,49,83,0.45);--glass-border:rgba(245,240,224,0.08);--glass-blur:16px;--border:rgba(44,49,83,0.8);--border-light:rgba(60,65,105,0.7);--text:#F5F0E0;--text-muted:#9BAAB8;--text-dim:#5A6880;--sky:#F5F0E0;--teal:#6B9E8E;--slate:#8FBDB0;--indigo:#C97060;--mint:#EAC97D;--foam:#F5F0E0;--accent:#C97060;--accent-2:#6B9E8E;--accent-3:#EAC97D;--accent-4:#8FBDB0;--accent-glow:rgba(201,112,96,0.13);--teal-glow:rgba(107,158,142,0.12);--sky-glow:rgba(245,240,224,0.10);--slate-glow:rgba(143,189,176,0.12);--mint-glow:rgba(234,201,125,0.10);--foam-glow:rgba(245,240,224,0.08);--green:#B6F2D1;--red:#f87171;--yellow:#fbbf24;--orange:#fb923c;--font:'Roboto',ui-sans-serif,system-ui,-apple-system,sans-serif;--mono:'Roboto Mono',ui-monospace,'Cascadia Code',monospace;--radius:14px;--radius-sm:10px;--radius-lg:18px;--shadow-card:0 4px 20px rgba(0,0,0,0.35),0 1px 4px rgba(0,0,0,0.25);--shadow-hover:0 8px 32px rgba(107,158,142,0.12),0 4px 16px rgba(0,0,0,0.4);--shadow-lg:0 12px 48px rgba(0,0,0,0.5);--shadow-glow:0 0 24px rgba(107,158,142,0.15),0 4px 20px rgba(0,0,0,0.3);--shadow:0 4px 24px rgba(0,0,0,0.5);--transition:0.2s ease}*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{font-family:var(--font);background:#2C3153;background:-webkit-linear-gradient(160deg,#2C3153 0%,#232845 35%,#1e2440 65%,#2C3153 100%);background:linear-gradient(160deg,#2C3153 0%,#232845 35%,#1e2440 65%,#2C3153 100%);background-attachment:fixed;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;font-size:15px;overflow-x:hidden}
/* Custom cursor — modern dot + ring */
*,*::before,*::after{cursor:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24'%3E%3Ccircle cx='12' cy='12' r='10' fill='none' stroke='%2385D1DB' stroke-width='1.5' opacity='0.6'/%3E%3Ccircle cx='12' cy='12' r='3' fill='%2385D1DB'/%3E%3C/svg%3E") 12 12,auto}
a,button,.chip,.toggle,.toggle-slider,.form-select,.tool-card-link,.stack-btn,.preset-btn,.kind-chip,.level-btn,.matrix-cell,.rt-btn,.lang-tab,.cat-tab,.cat-filter,.proto-btn,.mode-btn,.tab-btn,.view-tab,.format-btn,.algo-pill,.fmt-btn,.commit-btn,.sort-btn,.window-btn,.mask-style-btn,.stack-select-btn{cursor:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24'%3E%3Ccircle cx='12' cy='12' r='10' fill='none' stroke='%23B3EBF2' stroke-width='2' opacity='0.8'/%3E%3Ccircle cx='12' cy='12' r='3' fill='%23B3EBF2'/%3E%3Cpath d='M12 2v4M12 18v4M2 12h4M18 12h4' stroke='%23B3EBF2' stroke-width='1.5' stroke-linecap='round' opacity='0.4'/%3E%3C/svg%3E") 12 12,pointer}
input,textarea{cursor:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24'%3E%3Crect x='10' y='2' width='4' height='20' rx='2' fill='%2385D1DB' opacity='0.7'/%3E%3C/svg%3E") 12 12,text}
a{color:var(--indigo);text-decoration:none;transition:color var(--transition)}a:hover{color:var(--sky)}img{max-width:100%;display:block}button{cursor:pointer;font-family:var(--font)}input,textarea,select{font-family:var(--font)}.container{max-width:1200px;margin:0 auto;padding:0 24px}.container-sm{max-width:880px;margin:0 auto;padding:0 24px}.hidden{display:none !important}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}.site-header{position:sticky;top:0;z-index:100;background:rgba(35,40,65,0.80);backdrop-filter:blur(20px) saturate(1.3);-webkit-backdrop-filter:blur(20px) saturate(1.3);border-bottom:1px solid var(--glass-border);box-shadow:0 1px 12px rgba(0,0,0,0.3)}.header-inner{display:flex;align-items:center;justify-content:space-between;height:58px;gap:16px}.logo{display:flex;align-items:center;gap:10px;color:var(--text);font-size:16px;font-weight:700;letter-spacing:-0.01em}.logo:hover{color:var(--text)}.logo-icon{width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,var(--indigo) 0%,var(--teal) 100%);display:flex;align-items:center;justify-content:center;font-size:17px;flex-shrink:0;box-shadow:0 0 20px rgba(107,158,142,0.35)}.logo span{color:var(--sky)}.header-search{flex:1;max-width:300px;position:relative}.header-search input{width:100%;background:rgba(44,54,90,0.70);border:1px solid rgba(179,235,242,0.28);color:var(--text);font-size:13px;padding:8px 14px 8px 36px;border-radius:var(--radius-sm);transition:all var(--transition);backdrop-filter:blur(8px)}.header-search input:focus{outline:none;border-color:var(--indigo);box-shadow:0 0 0 3px rgba(91,164,181,0.18)}.header-search input::placeholder{color:var(--text-muted)}.search-icon{position:absolute;left:12px;top:50%;transform:translateY(-50%);color:var(--text-muted);font-size:14px;pointer-events:none}.nav-links{display:flex;align-items:center;gap:20px}.nav-links a{color:var(--text-muted);font-size:16px;font-weight:500;transition:color var(--transition);white-space:nowrap}.nav-links a:hover,.nav-links a.active{color:var(--sky)}.btn-compare-nav{background:linear-gradient(135deg,var(--indigo),var(--teal));color:#fff;font-size:13px;font-weight:600;padding:7px 16px;border-radius:var(--radius-sm);transition:opacity var(--transition),transform var(--transition);box-shadow:0 2px 12px rgba(91,164,181,0.25)}.btn-compare-nav:hover{opacity:0.88;color:#fff;transform:translateY(-1px)}.breadcrumb{display:flex;align-items:center;gap:6px;font-size:13px;color:var(--text-muted);margin-bottom:20px;flex-wrap:wrap}.breadcrumb a{color:var(--text-muted)}.breadcrumb a:hover{color:var(--teal)}.breadcrumb-sep{color:var(--text-dim)}.breadcrumb-current{color:var(--text);font-weight:500}.ad-slot{display:flex;flex-direction:column;align-items:center;gap:4px;padding:12px 0;margin:16px 0;width:100%}.ad-slot-label{font-size:10px;color:var(--text-dim);letter-spacing:0.08em;text-transform:uppercase;font-weight:500}.ad-slot-inner{background:var(--glass);border:1px dashed var(--border-light);border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;color:var(--text-dim);font-size:11px;font-family:var(--mono);width:100%;max-width:100%}.ad-slot-leaderboard .ad-slot-inner{max-width:728px;height:90px}.ad-slot-rectangle .ad-slot-inner{max-width:336px;height:280px}.ad-slot-banner .ad-slot-inner{max-width:728px;height:90px}.ad-slot-billboard .ad-slot-inner{max-width:970px;height:90px}@media (max-width:768px){.ad-slot-leaderboard .ad-slot-inner,.ad-slot-banner .ad-slot-inner,.ad-slot-billboard .ad-slot-inner{max-width:100%;height:100px}}@media (max-width:480px){.ad-slot-leaderboard .ad-slot-inner,.ad-slot-banner .ad-slot-inner,.ad-slot-billboard .ad-slot-inner{height:80px;font-size:10px}}.btn{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:500;padding:10px 20px;border-radius:var(--radius-sm);border:none;transition:all var(--transition);cursor:pointer;font-family:var(--font)}.btn-primary{background:linear-gradient(135deg,var(--indigo),var(--teal));color:#fff;box-shadow:0 2px 12px rgba(133,209,219,0.3)}.btn-primary:hover{opacity:0.88;transform:translateY(-1px);box-shadow:0 4px 20px rgba(91,164,181,0.35)}.btn-secondary{background:var(--glass);border:1px solid var(--border-light);color:var(--text-muted);backdrop-filter:blur(8px)}.btn-secondary:hover{border-color:var(--teal);color:var(--teal)}.btn-ghost{background:transparent;border:1px solid var(--border-light);color:var(--text-muted);padding:6px 12px;font-size:12px}.btn-ghost:hover{border-color:var(--teal);color:var(--teal);background:var(--teal-glow)}.btn-sm{font-size:12px;padding:5px 12px}.form-group{margin-bottom:16px}.form-label{display:block;font-size:12px;font-weight:700;color:var(--text-muted);letter-spacing:.06em;text-transform:uppercase;margin-bottom:8px}.form-input,.form-textarea{width:100%;background:var(--glass);border:1px solid var(--border-light);color:var(--text);padding:10px 14px;border-radius:var(--radius-sm);font-size:14px;transition:all var(--transition);backdrop-filter:blur(6px)}.form-input:focus,.form-textarea:focus{outline:none;border-color:var(--indigo);box-shadow:0 0 0 3px rgba(91,164,181,0.12)}.form-input::placeholder,.form-textarea::placeholder{color:var(--text-dim)}.form-textarea{resize:vertical;min-height:80px}.form-select{width:100%;background:var(--bg-card);border:1px solid var(--border-light);color:var(--text);padding:10px 14px;border-radius:var(--radius-sm);font-size:14px;cursor:pointer;appearance:none;background-image:url("data:image/svg+xml,%3Csvg width='10' height='6' viewBox='0 0 10 6' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1L5 5L9 1' stroke='%237b90b8' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;padding-right:36px}.form-select option{background:var(--bg-card);color:var(--text)}.output-box{background:var(--bg-alt);border:1px solid var(--border-light);border-radius:var(--radius-sm);padding:16px;font-family:var(--mono);font-size:13px;line-height:1.7;color:var(--text);white-space:pre-wrap;word-break:break-all;min-height:80px}.output-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}.output-label{font-size:11px;font-weight:700;color:var(--text-muted);letter-spacing:.08em;text-transform:uppercase}.copy-btn{background:var(--glass);border:1px solid var(--border-light);color:var(--text-muted);font-size:11px;font-weight:500;padding:4px 10px;border-radius:var(--radius-sm);transition:all var(--transition);cursor:pointer;font-family:var(--font);backdrop-filter:blur(6px)}.copy-btn:hover{border-color:var(--teal);color:var(--teal)}.copy-btn.copied{border-color:var(--teal);color:var(--teal)}.tool-page{padding:32px 0 64px}.tool-header{margin-bottom:28px;padding-bottom:24px;border-bottom:1px solid var(--border)}.tool-badge{display:inline-flex;align-items:center;gap:6px;background:var(--accent-glow);border:1px solid rgba(91,164,181,0.28);color:var(--sky);font-size:11px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;padding:4px 12px;border-radius:100px;margin-bottom:14px}.tool-title{font-size:clamp(22px,4vw,34px);font-weight:700;letter-spacing:-0.02em;color:var(--text);margin-bottom:10px;line-height:1.15}.tool-desc{font-size:15px;color:var(--text-muted);line-height:1.65;max-width:680px}.tool-body{display:grid;grid-template-columns:1fr;gap:16px}.tool-body.two-col{grid-template-columns:1fr 1fr}.tool-body.three-col{grid-template-columns:1fr 1fr 1fr}.tool-card{background:var(--bg-card);border:1px solid var(--glass-border);border-radius:var(--radius-lg);padding:22px;box-shadow:var(--shadow-card);backdrop-filter:blur(var(--glass-blur));-webkit-backdrop-filter:blur(var(--glass-blur));transition:all var(--transition)}.tool-card:hover{box-shadow:var(--shadow-hover)}.tool-card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px;gap:8px;flex-wrap:wrap}.tool-card-label{font-size:11px;font-weight:700;color:var(--text-muted);letter-spacing:.08em;text-transform:uppercase;display:flex;align-items:center;gap:6px}.tag{display:inline-flex;align-items:center;gap:4px;font-size:11px;font-weight:500;padding:3px 9px;border-radius:var(--radius-sm);font-family:var(--mono)}.tag-blue{background:rgba(91,164,181,.12);border:1px solid rgba(91,164,181,.25);color:var(--sky)}.tag-green{background:rgba(133,209,219,.12);border:1px solid rgba(133,209,219,.25);color:var(--teal)}.tag-purple{background:rgba(126,200,200,.15);border:1px solid rgba(126,200,200,.3);color:var(--slate)}.tag-orange{background:rgba(251,146,60,.12);border:1px solid rgba(251,146,60,.25);color:var(--orange)}.tag-red{background:rgba(248,113,113,.12);border:1px solid rgba(248,113,113,.25);color:var(--red)}.tag-sky{background:rgba(179,235,242,.12);border:1px solid rgba(179,235,242,.25);color:var(--sky)}.alert{padding:12px 16px;border-radius:var(--radius-sm);font-size:13px;display:flex;align-items:flex-start;gap:10px;margin:8px 0;line-height:1.55}.alert-info{background:rgba(91,164,181,.08);border:1px solid rgba(91,164,181,.2);color:var(--sky)}.alert-success{background:rgba(133,209,219,.08);border:1px solid rgba(133,209,219,.25);color:var(--teal)}.alert-warning{background:rgba(251,191,36,.08);border:1px solid rgba(251,191,36,.2);color:var(--yellow)}.alert-error{background:rgba(248,113,113,.08);border:1px solid rgba(248,113,113,.2);color:var(--red)}.info-box{background:rgba(179,235,242,.05);border:1px solid rgba(179,235,242,.15);border-radius:var(--radius-sm);padding:12px 16px;font-size:13px;color:var(--text-muted);line-height:1.6;box-shadow:0 2px 12px rgba(0,0,0,0.15)}.info-box strong,.info-box code{color:var(--sky)}.result-row{display:flex;align-items:center;justify-content:space-between;padding:10px 0;border-bottom:1px solid var(--border);gap:12px;flex-wrap:wrap}.result-row:last-child{border-bottom:none}.result-key{font-size:12px;color:var(--text-muted);font-weight:500;flex-shrink:0}.result-val{font-family:var(--mono);font-size:13px;color:var(--text);word-break:break-all;text-align:right}.result-val.good{color:var(--teal)}.result-val.warn{color:var(--yellow)}.result-val.bad{color:var(--red)}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:40px 20px;color:var(--text-dim);font-size:14px;text-align:center;gap:8px;min-height:140px}.empty-state-icon{font-size:32px}.chip-set{display:flex;flex-wrap:wrap;gap:6px}.chip{display:inline-flex;align-items:center;gap:6px;background:var(--glass);border:1px solid var(--border-light);color:var(--text-muted);font-size:12px;font-weight:400;padding:5px 12px;border-radius:100px;cursor:pointer;transition:all var(--transition);user-select:none;font-family:var(--mono);backdrop-filter:blur(6px)}.chip:hover,.chip.active{background:var(--teal-glow);border-color:rgba(133,209,219,.4);color:var(--teal)}.toggle-wrap{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-muted)}.toggle{position:relative;width:40px;height:22px;flex-shrink:0}.toggle input{opacity:0;width:0;height:0}.toggle-slider{position:absolute;inset:0;background:var(--border-light);border-radius:22px;cursor:pointer;transition:background var(--transition)}.toggle-slider::before{content:'';position:absolute;width:16px;height:16px;left:3px;bottom:3px;background:var(--text-dim);border-radius:50%;transition:all var(--transition)}.toggle input:checked+.toggle-slider{background:var(--teal)}.toggle input:checked+.toggle-slider::before{transform:translateX(18px);background:#fff}.stepper{display:flex;align-items:center;gap:8px}.stepper-btn{width:30px;height:30px;background:var(--glass);border:1px solid var(--border-light);color:var(--text);border-radius:var(--radius-sm);font-size:16px;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all var(--transition)}.stepper-btn:hover{border-color:var(--teal);color:var(--teal)}.stepper-val{font-family:var(--mono);font-size:14px;font-weight:500;min-width:36px;text-align:center;color:var(--sky)}.related-tools{margin-top:40px}.related-title{font-size:12px;font-weight:700;color:var(--text-muted);letter-spacing:.08em;text-transform:uppercase;margin-bottom:12px}.related-grid{display:flex;flex-wrap:wrap;gap:8px}.related-link{display:inline-flex;align-items:center;gap:6px;background:var(--glass);border:1px solid var(--glass-border);color:var(--text-muted);font-size:13px;padding:8px 14px;border-radius:var(--radius-sm);transition:all var(--transition);box-shadow:0 2px 8px rgba(0,0,0,0.15);backdrop-filter:blur(6px)}.related-link:hover{border-color:var(--teal);color:var(--teal);background:var(--teal-glow);box-shadow:0 4px 16px rgba(133,209,219,0.1)}.accent-text{background:linear-gradient(135deg,var(--sky) 0%,var(--teal) 45%,var(--indigo) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.mono{font-family:var(--mono)}.text-muted{color:var(--text-muted)}.text-sm{font-size:13px}.text-xs{font-size:11px}.mt-8{margin-top:8px}.mt-16{margin-top:16px}.mt-24{margin-top:24px}.mb-8{margin-bottom:8px}.mb-16{margin-bottom:16px}.mb-24{margin-bottom:24px}.flex{display:flex}.flex-col{flex-direction:column}.items-center{align-items:center}.justify-between{justify-content:space-between}.gap-8{gap:8px}.gap-12{gap:12px}.gap-16{gap:16px}.w-full{width:100%}.divider{border:none;border-top:1px solid var(--border);margin:20px 0}.site-footer{border-top:1px solid var(--glass-border);padding:40px 0 24px;margin-top:60px;background:rgba(35,40,65,0.60);backdrop-filter:blur(12px)}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:32px}.footer-brand p{color:var(--text-muted);font-size:13px;line-height:1.7;margin-top:10px;max-width:260px}.footer-col-title{font-size:12px;font-weight:700;color:var(--slate);letter-spacing:.06em;text-transform:uppercase;margin-bottom:14px}.footer-links{display:flex;flex-direction:column;gap:8px}.footer-links a{font-size:13px;color:var(--text-muted);transition:color var(--transition)}.footer-links a:hover{color:var(--teal)}.footer-bottom{display:flex;align-items:center;justify-content:space-between;padding-top:24px;border-top:1px solid var(--border);gap:16px;flex-wrap:wrap}.footer-bottom p,.footer-bottom a{font-size:12px;color:var(--text-dim)}.footer-bottom a:hover{color:var(--teal)}.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);background:var(--bg-elevated);border:1px solid var(--teal);color:var(--text);font-size:13px;padding:10px 20px;border-radius:var(--radius-sm);box-shadow:var(--shadow-lg);z-index:9999;animation:toastIn .2s ease;white-space:nowrap;backdrop-filter:blur(16px)}@keyframes toastIn{from{opacity:0;transform:translateX(-50%) translateY(8px)}to{opacity:1;transform:translateX(-50%) translateY(0)}}@media (max-width:900px){.tool-body.two-col,.tool-body.three-col{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr}.header-search{max-width:200px}}@media (max-width:768px){.tool-body.two-col,.tool-body.three-col{grid-template-columns:1fr}.tool-card{padding:16px}.result-row{flex-direction:column;align-items:flex-start;gap:4px}.result-val{text-align:left}.tool-card-header{flex-direction:column;align-items:flex-start;gap:8px}}@media (max-width:640px){.nav-links .hide-mobile{display:none}.footer-grid{grid-template-columns:1fr;gap:24px}.header-search{display:none}.container,.container-sm{padding:0 14px}.tool-page{padding:20px 0 48px}.tool-title{font-size:22px}.tool-desc{font-size:14px}.tool-card{padding:14px;border-radius:var(--radius)}.header-inner{height:52px}.chip{font-size:11px;padding:4px 10px}.btn{font-size:13px;padding:8px 16px}.form-input,.form-textarea{font-size:16px}}@media (max-width:380px){.container,.container-sm{padding:0 10px}.tool-card{padding:12px}.tool-title{font-size:20px}}@media print{.site-header,.site-footer,.ad-slot,.btn{display:none !important}body{background:#fff;color:#000}}
/* ── How to Use / Examples Section ── */
.how-to-use{background:var(--bg-card);border:1px solid var(--glass-border);border-radius:var(--radius-lg);padding:0;margin-top:16px;box-shadow:var(--shadow-card);backdrop-filter:blur(var(--glass-blur));overflow:hidden}
.htu-toggle{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;cursor:pointer;user-select:none;transition:background .2s}
.htu-toggle:hover{background:rgba(133,209,219,.04)}
.htu-title{font-size:14px;font-weight:700;color:var(--text);display:flex;align-items:center;gap:8px}
.htu-arrow{font-size:12px;color:var(--text-dim);transition:transform .2s}
.how-to-use.open .htu-arrow{transform:rotate(180deg)}
.htu-body{display:none;padding:0 20px 20px;border-top:1px solid var(--border)}
.how-to-use.open .htu-body{display:block}
.htu-steps{display:flex;flex-direction:column;gap:14px;margin-top:14px}
.htu-step{display:flex;gap:12px;align-items:flex-start}
.htu-step-num{width:28px;height:28px;border-radius:50%;background:linear-gradient(135deg,var(--indigo),var(--teal));color:#fff;font-size:12px;font-weight:800;display:flex;align-items:center;justify-content:center;flex-shrink:0;font-family:var(--mono)}
.htu-step-content{flex:1;font-size:13px;color:var(--text-muted);line-height:1.6}
.htu-step-content strong{color:var(--text);font-weight:600}
.htu-step-content code{background:rgba(91,164,181,.1);border:1px solid rgba(91,164,181,.15);color:var(--sky);padding:1px 6px;border-radius:4px;font-size:12px;font-family:var(--mono)}
.htu-examples{margin-top:16px;padding-top:14px;border-top:1px solid var(--border)}
.htu-examples-title{font-size:12px;font-weight:700;color:var(--text-muted);letter-spacing:.06em;text-transform:uppercase;margin-bottom:10px}
.htu-example{display:flex;flex-direction:column;gap:4px;padding:10px 14px;background:rgba(24,36,58,.55);border:1px solid var(--border);border-radius:var(--radius-sm);margin-bottom:8px;font-family:var(--mono);font-size:12px}
.htu-example-label{font-size:10px;font-weight:700;color:var(--text-dim);letter-spacing:.06em;text-transform:uppercase}
.htu-example-input{color:var(--sky)}
.htu-example-output{color:var(--mint)}