@keyframes slideDown{from{opacity:0;transform:translateY(-4px)}
to{opacity:1;transform:translateY(0)}
}
@keyframes previewPulse{0%{opacity:0;transform:translateY(4px)}
100%{opacity:1;transform:translateY(0)}
}
.breadcrumb{display:flex;align-items:center;gap:6px;flex-wrap:wrap;font-size:12px;color:var(--text-3);list-style:none}
.breadcrumb li{display:flex;align-items:center;gap:6px}
.breadcrumb li:last-child{color:var(--text-2);font-weight:500}
.share-btn{appearance:none;font-family:inherit;display:inline-flex;align-items:center;justify-content:center;gap:5px;padding:6px 13px;min-width:90px;border-radius:var(--r-pill);font-size:12px;font-weight:500;cursor:pointer;border:none;text-decoration:none;transition:opacity var(--transition),transform var(--transition)}
.share-btn:hover{transform:translateY(-1px);opacity:0.88}
.step-title{font-size:clamp(17px,1.6vw,19px);font-weight:700;letter-spacing:-0.35px;color:#111318}
.btn-row{display:flex;flex-wrap:wrap;align-items:center;gap:7px;margin-bottom:9px}
[data-theme="dark"] :is(.tut-hl,.compare-table td.weak,.ex-table td.weak,.comp-table td.bad,.prog-table td.mid){background:#fbbf242e;color:#fde68a;font-weight:400}
[data-theme="dark"] :is(.compare-table td.weak,.compare-table td.strong,.upgrade-before,.upgrade-after,.prog-table td.mid){font-size:13px;letter-spacing:0;text-transform:none}
[data-theme="dark"] :is(.compare-table td.strong,.upgrade-after){background:#1d9e7514;color:var(--success);font-weight:400}
[data-theme="dark"] .upgrade-before{border-bottom-color:#ffffff14}
.faq-item[open] .faq-arrow,.lang-picker[aria-expanded="true"] .lang-picker-caret{transform:rotate(180deg)}
.lang-option:first-child{border-radius:var(--r-lg) var(--r-lg) 0 0}
.lang-option:last-child{border-radius:0 0 var(--r-lg) var(--r-lg)}
.tut-hero{text-align:center;padding:32px 20px 32px;max-width:680px;margin:0 auto}
.tut-hero h1{font-size:clamp(26px,5vw,40px);font-weight:700;line-height:1.2;color:var(--text);margin-bottom:16px}.tut-hero h1 .h1-line{display:block}
.tut-hero h1 em{color:var(--accent);font-style:normal}
.tut-hero-sub{font-size:15px;color:var(--text-2);line-height:1.7;max-width:540px;margin:0 auto 28px}
.tut-hero-cta{display:inline-flex;align-items:center;gap:8px;background:var(--grad-accent);color:#fff;font-size:14px;font-weight:600;padding:12px 28px;border-radius:var(--r-md);text-decoration:none;box-shadow:0 8px 24px #7f77dd4d;transition:background var(--transition),transform var(--transition)}
.tut-hero-cta:hover{background:var(--grad-accent-hover);transform:translateY(-1px)}
.stats-row{display:flex;justify-content:center;max-width:600px;margin:0 auto 48px;border:1px solid #1e283c17;border-radius:var(--r-lg);background:#fff;overflow:hidden;box-shadow:var(--sh-sm)}
.stat-item{flex:1;padding:18px 12px;text-align:center;border-right:1px solid var(--border)}
.stat-item:last-child{border-right:none}
.stat-num{font-size:20px;font-weight:700;color:var(--accent);line-height:1}
.stat-lbl{font-size:11px;color:var(--text-3);margin-top:4px;font-weight:500}
.section-sub{font-size:14px;color:var(--text-2);line-height:1.5;margin-bottom:28px}
.content-card,.learn-card{background:#fff;border:1px solid var(--card-border);border-radius:var(--r-xl);box-shadow:var(--sh-sm)}
.content-card{padding:28px 24px;margin-bottom:20px}
.learn-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(270px,1fr));gap:14px;margin-bottom:48px}
.learn-card{padding:24px 20px 20px;text-decoration:none;display:block;position:relative;overflow:hidden;transition:background var(--transition),border-color var(--transition),box-shadow var(--transition),transform var(--transition)}
.learn-card::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--accent),var(--accent-mid));opacity:0;transition:opacity var(--transition)}
.learn-card:hover{border-color:var(--card-active-border);box-shadow:var(--card-active-shadow);transform:translateY(-2px)}
.learn-card:hover::before{opacity:1}
.learn-card-badge{display:inline-flex;align-items:center;gap:5px;font-size:11px;font-weight:700;letter-spacing:0.5px;text-transform:uppercase;padding:4px 10px;border-radius:var(--r-pill);margin-bottom:12px}
.badge-advanced{background:#dc643c26;color:var(--warn)}
.badge-examples{background:#3c82dc1a;color:#1a5fa0}
[data-theme="dark"] .badge-examples{background:#3c82dc26;color:#7ab8f5}
.learn-card-icon{font-size:24px;margin-bottom:10px;display:block;line-height:1}
.learn-card h2{font-size:16px;font-weight:700;color:var(--text);margin-bottom:7px;line-height:1.2}
.learn-card p{font-size:13px;color:var(--text-2);line-height:1.5;margin-bottom:14px}
.learn-card-topics{display:flex;flex-wrap:wrap;gap:4px;margin-bottom:16px}
.topic-pill{font-size:11px;color:var(--text-3);background:var(--surface-2);border:1px solid var(--border);border-radius:var(--r-pill);padding:3px 9px}
.learn-card-arrow{display:flex;align-items:center;gap:5px;font-size:12px;font-weight:600;color:var(--accent);transition:gap var(--transition)}
.learn-card:hover .learn-card-arrow{gap:8px}
.benefits-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:10px;margin-bottom:8px}
.benefit-item{background:#f8f9fbcc;border:1px solid #1e283c17;border-radius:var(--r-lg);padding:14px 16px;display:flex;align-items:flex-start;gap:10px}
.benefit-dot{width:7px;height:7px;border-radius:var(--r-pill);background:var(--accent);flex-shrink:0;margin-top:5px}
.tut-hl{color:var(--accent);font-weight:600;background:var(--accent-light);padding:1px 5px;border-radius:var(--r-sm)}
.tut-p{font-size:13px;color:var(--text-2);line-height:1.5;margin-bottom:12px}
.tut-subhead{font-size:13px;font-weight:700;color:var(--text);margin:16px 0 10px}
.tut-subhead-sm{font-size:12px;color:var(--text-2);line-height:1.7;margin-top:2px}
.tut-tip{margin-top:16px;padding:14px 16px;background:#f1f5f9cc;border-radius:var(--r-lg);font-size:13px;color:var(--text-2);line-height:1.5}
.tut-em{font-style:normal;color:var(--accent);font-weight:600}
.checklist-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:8px;margin-top:8px}
.checklist-item{padding:10px 12px;background:#fff;border:1px solid var(--border);border-radius:var(--r-md);font-size:13px;color:var(--text-2);line-height:1.5}
.tut-label-bad{font-size:11px;font-weight:700;letter-spacing:0.5px;text-transform:uppercase;color:var(--danger);margin-bottom:6px}
.tut-label-good{font-size:11px;font-weight:700;letter-spacing:0.5px;text-transform:uppercase;color:var(--success-dark);margin-bottom:6px}
.tut-bad-block{padding:12px 14px;background:#dc3c3c0a;border:1px solid #dc3c3c2e;border-radius:var(--r-md);font-size:13px;line-height:1.5}
.anatomy-table{width:100%;min-width:400px;border-collapse:collapse;font-size:13px}
.anatomy-table th{padding:9px 12px;text-align:left;font-size:11px;font-weight:700;letter-spacing:0.5px;text-transform:uppercase;color:var(--text-3);border-bottom:1px solid var(--border-mid)}
.anatomy-table td{padding:10px 12px;color:var(--text-2);border-bottom:1px solid var(--border);vertical-align:top}
.anatomy-table td:first-child{font-weight:600;color:var(--accent);white-space:nowrap}
.compare-table{width:100%;min-width:480px;border-collapse:collapse;font-size:13px}
.compare-table th{padding:9px 12px;text-align:left;font-size:11px;font-weight:700;letter-spacing:0.5px;text-transform:uppercase;background:var(--surface-2);border-bottom:2px solid var(--border-mid)}
.compare-table td{padding:11px 12px;border-bottom:1px solid var(--border);color:var(--text-2);vertical-align:top;line-height:1.5}
.compare-table td.weak{background:#dc3c3c0a;color:var(--warn)}
.compare-table td.strong{background:#1d9e750a;color:var(--success-dark)}
.prompt-examples{display:grid;gap:10px}
.prompt-ex-card,.template-item{border:1px solid #1e283c17;overflow:hidden;background:#fff}
.prompt-ex-card{border-radius:var(--r-md);box-shadow:var(--sh-surface)}
.prompt-ex-header{display:flex;align-items:center;gap:8px;padding:8px 14px;background:var(--surface-2);border-bottom:1px solid var(--border)}
.prompt-ex-level{font-size:11px;font-weight:700;letter-spacing:0.4px;text-transform:uppercase;padding:3px 8px;border-radius:var(--r-pill)}
[data-theme="dark"] .level-basic{background:#b4b4b414;color:var(--text-3)}
.prompt-ex-body{padding:12px 14px;font-size:13px;color:var(--text-2);line-height:1.5}
.mistakes-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:9px}
.mistake-item{display:flex;align-items:flex-start;gap:10px;padding:13px 14px;background:var(--surface-2);border:1px solid var(--border);border-radius:var(--r-md)}
.mistake-icon{font-size:15px;flex-shrink:0;margin-top:1px}
.mistake-text{font-size:13px;color:var(--text-2);font-weight:500;line-height:1.4}
.techniques-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:9px}
.technique-num{width:22px;height:22px;border-radius:var(--r-pill);background:var(--accent-soft);color:var(--accent);font-size:11px;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.video-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:11px}
.video-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);padding:14px;text-decoration:none;transition:border-color var(--transition),box-shadow var(--transition);display:flex;flex-direction:column;gap:8px}
.video-thumb{aspect-ratio:16/9;background:var(--surface-2);border-radius:var(--r-sm);display:flex;align-items:center;justify-content:center;font-size:24px;color:var(--text-3)}
.video-label{font-size:12px;font-weight:600;color:var(--text-2);line-height:1.4}
.video-src{font-size:11px;color:var(--text-3)}
.cta-btn-group{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.btn-ghost{display:inline-flex;align-items:center;gap:7px;background:transparent;color:var(--text-2);font-size:14px;font-weight:600;padding:11px 22px;border-radius:var(--r-md);text-decoration:none;border:1px solid var(--border-mid);transition:background var(--transition),border-color var(--transition),color var(--transition)}
.tut-wrap{max-width:760px;margin:0 auto;padding:0 16px 60px}
.article-hero h1{font-size:clamp(24px,5vw,36px);font-weight:700;line-height:1.2;color:var(--text);margin:0 0 12px}
.article-hero .subtitle{font-size:16px;color:var(--text-2);line-height:1.5;max-width:600px}
.article-meta{display:flex;align-items:center;gap:12px;margin-top:18px;flex-wrap:wrap}
.meta-pill{display:inline-flex;align-items:center;gap:5px;font-size:12px;color:var(--text-3);background:var(--surface-2);border:1px solid var(--border);border-radius:var(--r-pill);padding:4px 11px}
.toc-card{background:var(--surface-2);border:1px solid var(--border-mid);border-left:3px solid var(--accent);border-radius:0 var(--r-lg) var(--r-lg) 0;padding:18px 20px;margin:0 0 24px}
.toc-title{font-size:12px;font-weight:700;letter-spacing:0.6px;text-transform:uppercase;color:var(--accent);margin-bottom:12px}
.toc-list{list-style:none;display:flex;flex-direction:column;gap:6px}
.toc-num{width:18px;height:18px;border-radius:var(--r-pill);background:var(--accent-soft);color:var(--accent);font-size:11px;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.num-circle{width:32px;height:32px;border-radius:var(--r-pill);background:var(--grad-accent);color:#fff;font-size:13px;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0;box-shadow:var(--sh-acc-sm)}
.sec-anchor{display:block;margin-top:calc(-1 * (var(--pe-nav-height,62px)+var(--pe-sticky-social-height,68px)+18px));padding-top:calc(var(--pe-nav-height,62px)+var(--pe-sticky-social-height,68px)+18px);visibility:hidden}
.sec-label{display:inline-block;padding:3px 10px;background:#e1f5ee;color:#085041;border-radius:var(--r-pill);font-size:11px;font-weight:700;letter-spacing:0.5px;text-transform:uppercase;margin-bottom:8px}
.sec-sub{font-size:14px;color:var(--text-2);line-height:1.7;margin-bottom:20px}
.intro-points{display:flex;flex-direction:column;gap:10px;margin-bottom:8px}
.intro-point{display:flex;align-items:flex-start;gap:12px;padding:14px 16px;background:#f8f9fbcc;border:1px solid #1e283c17;border-radius:var(--r-lg)}
.intro-point-icon{width:32px;height:32px;border-radius:var(--r-pill);background:var(--accent-soft);display:flex;align-items:center;justify-content:center;flex-shrink:0}
.intro-point-text{font-size:14px;color:var(--text-2);line-height:1.5;font-weight:500;padding-top:5px}
.rule-item{display:flex;align-items:flex-start;gap:14px;padding:18px 18px}
.rule-item:not(:last-child){border-bottom:1px solid var(--border)}
.rule-title{font-size:15px;font-weight:700;color:var(--text);margin-bottom:4px}
.rule-example{background:var(--surface-2);border:1px solid var(--border);border-left:3px solid var(--accent-mid);border-radius:0 var(--r-sm) var(--r-sm) 0;padding:9px 12px;font-size:12px;color:var(--text-2);line-height:1.5}
.rule-example-label{font-size:11px;font-weight:700;letter-spacing:0.4px;text-transform:uppercase;color:var(--text-4);margin-bottom:4px}
.eg-bad{color:var(--warn)}
.ex-table th{padding:10px 14px;text-align:left;font-size:11px;font-weight:700;letter-spacing:0.5px;text-transform:uppercase;color:var(--text-3);white-space:nowrap;border-bottom:1px solid var(--border-mid)}
.ex-table td{padding:12px 14px;color:var(--text-2);border-bottom:1px solid var(--border);vertical-align:top;line-height:1.5}
.scroll-hint{font-size:11px;color:var(--text-4);display:flex;align-items:center;gap:4px;margin-bottom:6px}
.template-item{border-radius:var(--r-lg);box-shadow:var(--sh-sm)}
.template-hdr{display:flex;align-items:center;gap:8px;padding:10px 14px;background:var(--surface-2);border-bottom:1px solid var(--border)}
.template-fill{color:var(--accent);background:var(--accent-light);padding:1px 5px;border-radius:var(--r-sm);font-weight:600;font-style:normal}
[data-theme="dark"] .tip-box{background:#7f77dd1f;border-color:#7f77dd33}
.tip-text strong{color:var(--accent-dark);font-weight:700}
.nav-links-bottom{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:32px 0}
.nav-link-dir{font-size:11px;font-weight:700;letter-spacing:0.5px;text-transform:uppercase;color:var(--text-4);margin-bottom:4px}
.nav-link-title{font-size:14px;font-weight:600;color:var(--text);line-height:1.2}
.nav-link-card.next{text-align:right}
.nav-link-card.next .nav-link-dir::after{content:" →"}
.nav-link-card.prev .nav-link-dir::before{content:"← "}
.btn-primary{display:inline-flex;align-items:center;gap:7px;background:var(--grad-accent);color:#fff;font-size:14px;font-weight:600;padding:11px 22px;border-radius:var(--r-md);text-decoration:none;border:none;cursor:pointer;box-shadow:0 6px 20px rgba(127,119,221,0.25);transition:transform var(--transition),box-shadow var(--transition)}
.btn-primary:hover{transform:translateY(-1px)}
.toc-card .toc-list li a{font-size:13px;color:var(--text-2);text-decoration:none;display:flex;align-items:center;gap:8px;transition:color var(--transition)}
.method-card{border:1px solid var(--border);border-radius:var(--r-lg);overflow:hidden;transition:border-color var(--transition)}
.method-icon{width:36px;height:36px;border-radius:var(--r-md);background:var(--accent-soft);display:flex;align-items:center;justify-content:center;flex-shrink:0;font-size:16px}
.method-name{font-size:14px;font-weight:700;color:var(--text);line-height:1}
.method-tagline{font-size:12px;color:var(--text-3);margin-top:3px}
.method-badge{font-size:11px;font-weight:700;letter-spacing:0.4px;text-transform:uppercase;padding:3px 9px;border-radius:var(--r-pill);background:var(--accent-soft);color:var(--accent);flex-shrink:0}
.method-body{padding:18px;display:none}
.method-when{font-size:12px;font-weight:700;color:var(--text);margin-bottom:6px}
.method-expand{font-size:12px;color:var(--text-4);transition:transform var(--transition);flex-shrink:0}
.method-card.open .method-expand{transform:rotate(180deg);color:var(--accent)}
.workflow-steps{display:flex;flex-direction:column;gap:0}
.step-item{display:flex;align-items:flex-start;gap:14px;padding:16px 0;border-bottom:1px solid var(--border)}
.step-body{flex:1;padding-top:4px}
.tip-text,.step-desc{font-size:13px;color:var(--text-2);line-height:1.5}
.step-prompt-label{font-size:11px;font-weight:700;letter-spacing:0.4px;text-transform:uppercase;color:var(--text-4);margin:10px 0 5px}
.step-prompt{background:var(--surface-2);border:1px solid var(--border);border-left:3px solid var(--accent-mid);border-radius:0 var(--r-sm) var(--r-sm) 0;padding:10px 14px;font-size:12px;color:var(--text-2);line-height:1.5;font-style:italic}
.ex-table-wrap,.tbl-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;border-radius:var(--r-lg);border:1px solid #1e283c17;background:#fff;box-shadow:var(--sh-surface)}
.comp-table td:first-child{font-weight:600;color:var(--accent)}
.comp-table td.level-basic{font-size:11px;padding:4px 14px 4px 0;white-space:nowrap}
.badge-pill{display:inline-block;font-size:11px;font-weight:700;padding:2px 8px;border-radius:var(--r-pill)}
.prompt-box{background:var(--surface-2);border:1px solid var(--border-mid);border-left:3px solid var(--accent);border-radius:0 var(--r-md) var(--r-md) 0;padding:16px 52px 16px 16px;font-size:13px;color:var(--text-2);line-height:1.7;position:relative;margin-bottom:8px;min-height:60px}
.rules-list,.templates-grid,.upgrade-list{display:flex;flex-direction:column;gap:12px}
.upgrade-item{border:1px solid var(--border);border-radius:var(--r-lg);overflow:hidden}
.upgrade-before{padding:11px 14px;background:#dc3c3c0a;border-bottom:1px solid var(--border);font-size:12px;color:var(--warn);line-height:1.5}
.upgrade-after{padding:11px 14px;background:#1d9e750a;font-size:12px;color:var(--success-dark);line-height:1.5}
.upgrade-label{font-size:11px;font-weight:700;letter-spacing:0.4px;text-transform:uppercase;color:var(--text-4);margin-bottom:3px}
.int-link{display:flex;align-items:center;gap:10px;padding:14px 16px;background:#f8f9fbcc;border:1px solid #1e283c17;border-radius:var(--r-lg);text-decoration:none;transition:background var(--transition),border-color var(--transition),color var(--transition)}
.lang-picker-btn:hover,.int-link:hover{border-color:var(--accent-mid);background:var(--accent-soft)}
.int-link-icon{font-size:18px;flex-shrink:0}
.int-link-text{font-size:13px;font-weight:600;color:var(--text-2)}
.nav-link-card{display:flex;flex-direction:column;padding:16px 18px;background:var(--surface);border:1px solid var(--border-mid);border-radius:var(--r-lg);text-decoration:none;transition:border-color var(--transition),box-shadow var(--transition)}
.video-card:hover,.nav-link-card:hover{border-color:var(--accent-mid);box-shadow:var(--sh-md)}
.article-hero{padding:24px 0 24px}
.filter-bar{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:24px}
.filter-btn{display:inline-flex;align-items:center;gap:5px;padding:7px 14px;font-size:12px;font-weight:600;border-radius:var(--r-pill);border:1px solid var(--border-mid);background:var(--surface);color:var(--text-2);cursor:pointer;transition:background var(--transition),border-color var(--transition),box-shadow var(--transition),color var(--transition);white-space:nowrap}
.btn-ghost:hover,.filter-btn:hover{border-color:var(--accent-mid);color:var(--accent);background:var(--accent-soft)}
.filter-btn.active{background:var(--grad-accent);color:#fff;border-color:transparent;box-shadow:0 4px 12px rgba(127,119,221,0.25)}
.filter-count{font-size:11px;font-weight:700;background:#ffffff24;padding:1px 6px;border-radius:var(--r-pill)}
.filter-btn:not(.active) .filter-count{background:var(--surface-2);color:var(--text-3)}
.cat-section{margin-bottom:32px}
.cat-icon{font-size:20px;line-height:1}
.cat-count{font-size:12px;color:var(--text-3);font-weight:500}
.prompt-grid{display:flex;flex-direction:column;gap:10px}
.lv-b{background:#dc503c1f;color:var(--warn)}
.lv-i{background:#c8a00021;color:#7a5f00}
.badge-beginner,.lv-a{background:var(--success-light);color:var(--success-dark)}
[data-theme="dark"] :is(.badge-beginner,.bp-beginner,.lv-b){background:#1d9e7538;color:#9fe1cb}
[data-theme="dark"] :is(.badge-advanced,.bp-advanced,.lv-a){background:#dc643c26;color:#f0906a}
.prompt-fill{color:var(--accent);background:var(--accent-light);padding:1px 5px;border-radius:var(--r-sm);font-weight:600}
[data-theme="dark"] :is(.template-fill,.prompt-fill){background:#fbbf242e;color:#fde68a;border-bottom:1.5px dashed #fbbf2480;font-weight:500}
.prompt-card-tip strong{color:var(--text-2);font-weight:600}
.results-meta{font-size:13px;color:var(--text-3);margin-bottom:16px}
.results-meta strong{color:var(--text);font-weight:600}
.tip-box{display:flex;align-items:flex-start;gap:12px;background:var(--accent-light);border:1px solid var(--accent-mid);border-radius:var(--r-lg);padding:14px 16px;margin:16px 0}
.tip-icon{font-size:16px;flex-shrink:0;margin-top:1px}
.mistake-cards{display:flex;flex-direction:column;gap:14px}
.mistake-card{border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--border)}
.mistake-hdr{display:flex;align-items:flex-start;gap:12px;padding:16px 18px;background:var(--surface-2);border-bottom:1px solid var(--border)}
.rule-body,.method-hdr-text,.mistake-hdr-text{flex:1}
.mistake-name{font-size:15px;font-weight:700;color:var(--text);margin-bottom:3px}
.ex-table td.why,.mistake-tagline,.u-text-xs-muted{font-size:12px;color:var(--text-3)}
.mistake-body{padding:18px}
.method-desc,.mistake-desc{font-size:13px;color:var(--text-2);line-height:1.7;margin-bottom:14px}
.before-after{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.ba-block{border-radius:var(--r-md);padding:12px 14px}
.ba-bad{background:#dc3c3c0a;border:1px solid #dc3c3c2e}
.ba-good{background:#1d9e750a;border:1px solid #1d9e7538}
[data-theme="dark"] .ba-bad{background:#dc3c3c14;border-color:#dc3c3c2e}
[data-theme="dark"] .ba-good{background:#1d9e7514;border-color:#1d9e7538}
.ba-label{font-size:11px;font-weight:700;letter-spacing:0.4px;text-transform:uppercase;margin-bottom:6px}
.ba-text{font-size:12px;color:var(--text-2);line-height:1.5}
.ba-fix{font-size:12px;font-weight:600;color:var(--success-dark);margin-top:10px;padding:8px 12px;background:var(--success-light);border-radius:var(--r-sm);display:flex;align-items:flex-start;gap:6px;line-height:1.5}
[data-theme="dark"] .ba-fix{background:#1d9e751f;color:var(--success)}
.ex-table,.comp-table{width:100%;min-width:500px;border-collapse:collapse;font-size:13px}
.compare-table th.col-weak,.ba-bad .ba-label,.comp-table th.col-bad{color:var(--danger)}
.comp-table td{padding:12px 14px;color:var(--text-2);border-bottom:1px solid var(--border);vertical-align:top;line-height:1.5;font-size:13px}
.ex-table td.weak,.comp-table td.bad{color:var(--warn);background:#dc3c3c0a}
.ex-table td.strong,.comp-table td.good{color:var(--success-dark);background:#1d9e750a}
.lang-name,.comp-table td.why{color:var(--text-3);font-size:12px}
.formula-step{text-align:center;padding:20px 14px;background:#f8f9fbcc;border:1px solid #1e283c17;border-radius:var(--r-lg);position:relative}
.formula-step::after{content:"→";position:absolute;right:-8px;top:50%;transform:translateY(-50%);font-size:14px;color:var(--text-4);font-weight:700}
.formula-step-title{font-size:13px;font-weight:700;color:var(--text);margin-bottom:4px}
.formula-step-desc{font-size:11px;color:var(--text-3);line-height:1.4}
.checklist{display:flex;flex-direction:column;gap:8px}
.check-box{width:20px;height:20px;border-radius:var(--r-sm);border:1.5px solid var(--border-strong);background:var(--surface);display:flex;align-items:center;justify-content:center;flex-shrink:0;margin-top:1px;transition:background var(--transition),border-color var(--transition),color var(--transition)}
.check-item.checked .check-box{background:var(--success);border-color:var(--success);color:#fff}
.check-item.checked .check-box::after{content:"✓";font-size:11px;font-weight:700;color:#fff}
.benefit-text,.check-text{font-size:13px;color:var(--text-2);font-weight:500;line-height:1.5}
.check-item.checked .check-text{color:var(--success-dark);text-decoration:line-through;opacity:0.7}
[data-theme="dark"] :is(.eg-bad,.ba-bad .ba-label,.comp-table th.col-bad){color:#f07070}
.formula-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:12px;margin-bottom:20px}
.formula-el{border-radius:var(--r-lg);border:1px solid var(--border);overflow:hidden;transition:border-color var(--transition)}
.method-card:hover,.prompt-card:hover,.check-item:hover,.formula-el:hover{border-color:var(--accent-mid)}
.formula-el-hdr{display:flex;align-items:center;gap:10px;padding:12px 14px;background:var(--surface-2);border-bottom:1px solid var(--border)}
.formula-el-num{width:26px;height:26px;border-radius:var(--r-pill);background:var(--grad-accent);color:#fff;font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0;box-shadow:var(--sh-acc-sm)}
.formula-el-req{font-size:11px;font-weight:700;letter-spacing:0.3px;text-transform:uppercase;padding:2px 7px;border-radius:var(--r-pill);margin-left:auto;flex-shrink:0}
.badge-mistakes,.req-must{background:#dc3c3c1a;color:var(--danger)}
.req-good{background:var(--accent-light);color:var(--accent-dark)}
.req-opt{background:var(--surface-3);color:var(--text-3)}
[data-theme="dark"] :is(.badge-mistakes,.req-must){background:#dc3c3c2e;color:#f07070}
.formula-el-body{padding:12px 14px}
.rule-desc,.formula-el-desc{font-size:13px;color:var(--text-2);line-height:1.5;margin-bottom:8px}
.formula-el-ex{font-size:12px;color:var(--text-3);font-style:italic;padding:7px 10px;background:var(--surface-2);border-radius:var(--r-sm);line-height:1.5}
.prog-table{width:100%;min-width:540px;border-collapse:collapse;font-size:13px}
.anatomy-table thead tr,.anatomy-table tr:hover td,.ex-table thead tr,.ex-table tr:hover td,.comp-table thead tr,.comp-table tr:hover td,.prog-table thead tr{background:var(--surface-2)}
.comp-table th,.prog-table th{padding:10px 14px;text-align:left;font-size:11px;font-weight:700;letter-spacing:0.5px;text-transform:uppercase;color:var(--text-3);border-bottom:1px solid var(--border-mid);white-space:nowrap}
.compare-table th.col-strong,.ba-good .ba-label,.comp-table th.col-good,.prog-table th.col-a{color:var(--success-dark)}
.eg-good{color:var(--success)}
[data-theme="dark"] .eg-good,[data-theme="dark"] .ba-good .ba-label,[data-theme="dark"] .comp-table th.col-good,[data-theme="dark"] .check-item.checked .check-text,[data-theme="dark"] .prog-table th.col-a{color:var(--success)}
.prog-table td{padding:12px 14px;border-bottom:1px solid var(--border);vertical-align:top;line-height:1.5;font-size:13px}
.prog-table td.basic{color:var(--text-3);background:#b4b4b414}
.prog-table td.adv{color:var(--success-dark);background:#1d9e750a;font-weight:500}
[data-theme="dark"] :is(.ex-table td.strong,.comp-table td.good,.prog-table td.adv){background:#1d9e7514;color:var(--success)}
:is(.anatomy-table,.compare-table,.ex-table,.comp-table,.prog-table) tr:last-child td,.step-item:last-child{border-bottom:none}
.prog-table tr:hover td{filter:brightness(0.97)}
[data-theme="dark"] .prog-table tr:hover td{filter:brightness(1.05)}
:is(.methods-grid,.technique-list){display:flex;flex-direction:column;gap:16px}
.technique-item{padding:14px;background:var(--surface-2);border:1px solid var(--border);border-radius:var(--r-lg);font-size:13px;color:var(--text-2);font-weight:500;display:flex;align-items:center;gap:9px;overflow:hidden}
.t-tag{font-size:11px;font-weight:700;letter-spacing:0.3px;text-transform:uppercase;padding:3px 9px;border-radius:var(--r-pill);background:var(--accent-soft);color:var(--accent)}
.technique-body{padding:16px 18px}
.t-desc{font-size:13px;color:var(--text-2);line-height:1.7;margin-bottom:12px}
.t-examples{display:flex;flex-direction:column;gap:6px}
.t-ex-row{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.t-ex{padding:9px 12px;border-radius:var(--r-md);font-size:12px;line-height:1.5}
.t-ex-before{background:#b4b4b414;border:1px solid var(--border);color:var(--text-3)}
.t-ex-after{background:var(--accent-light);border:1px solid var(--accent-mid);color:var(--accent-dark);font-weight:500}
[data-theme="dark"] .t-ex-before{background:#b4b4b414}
[data-theme="dark"] .t-ex-after{background:#7f77dd1f;border-color:#7f77dd4d;color:var(--accent-hover)}
.t-ex-lbl{font-size:11px;font-weight:700;letter-spacing:0.3px;text-transform:uppercase;color:var(--text-4);margin-bottom:4px}
.nav-link.active,.breadcrumb a:hover,.faq-q:hover,.footer-links a:hover,.toc-list li a:hover,.int-link:hover .int-link-text,.t-ex-after .t-ex-lbl{color:var(--accent)}
.builder-fields{display:flex;flex-direction:column;gap:10px;margin-bottom:14px}
.faq-list,.builder-field{display:flex;flex-direction:column;gap:4px}
.builder-field-label{font-size:12px;font-weight:600;color:var(--text)}
.builder-field-opt{font-size:11px;color:var(--text-3);font-weight:400}
.builder-input{width:100%;padding:9px 12px;border:1px solid var(--border-mid);border-radius:var(--r-md);font-size:13px;font-family:inherit;color:var(--text);background:var(--input-bg);outline:none;transition:border-color var(--transition)}
.builder-input:focus{border-color:var(--accent);box-shadow:var(--sh-focus)}
.builder-input:focus-visible{border-color:var(--accent);box-shadow:var(--sh-focus)}
.t-ex-before .t-ex-lbl,.builder-input::placeholder{color:var(--text-4)}
.builder-output{background:var(--surface-2);border:1px solid var(--accent-mid);border-left:3px solid var(--accent);border-radius:0 var(--r-md) var(--r-md) 0;padding:14px 50px 14px 14px;font-size:13px;color:var(--text-2);line-height:1.7;min-height:60px;position:relative;white-space:pre-wrap;transition:background var(--transition),border-color var(--transition)}
.builder-placeholder{color:var(--text-4);font-style:italic}
.library-card{background:#f8f9fbcc;border:1px solid #1e283c17;border-radius:var(--r-lg);padding:14px 16px;display:flex;flex-direction:column;gap:5px}
.library-cat{font-size:11px;font-weight:700;letter-spacing:0.4px;text-transform:uppercase;color:var(--accent)}
.formula-el-name,.library-name{font-size:13px;font-weight:700;color:var(--text)}
.library-desc{font-size:12px;color:var(--text-3);line-height:1.4}
.series-complete{display:flex;align-items:center;gap:14px;padding:18px 20px;background:var(--grad-soft-mix);border:1px solid var(--success-mid);border-radius:var(--r-xl);margin-bottom:24px}
[data-theme="dark"] .series-complete{background:var(--grad-soft-mix-dark);border-color:#1d9e7538}
.series-icon{font-size:28px;flex-shrink:0}
.series-text .series-title{font-size:14px;font-weight:700;color:var(--text);margin-bottom:3px}
.series-text p{font-size:13px;color:var(--text-2);line-height:1.5}
.compare-table th.col-result,.prog-table th.col-b,[data-theme="dark"] .nav-link,[data-theme="dark"] .footer-links a,[data-theme="dark"] .hero-share-label{color:var(--text-3)}
[data-theme="dark"] .share-em{background:#ffffff14;color:var(--text-2);border-color:#ffffff1a}
[data-theme="dark"] .bottom-cta .btn-row{justify-content:center;margin-bottom:0;width:100%}
.bottom-cta{text-align:center;background:var(--accent-light);border:1px solid var(--accent-mid);border-radius:var(--r-xl);padding:32px 24px;margin:32px 0;margin-top:40px}
[data-theme="dark"] .bottom-cta{background:#7f77dd1f;border-color:#7f77dd4d}
.bottom-cta h2{font-size:20px;font-weight:700;color:var(--accent-dark);margin-bottom:10px}
.bottom-cta p{font-size:14px;color:var(--text-2);margin-bottom:18px;max-width:440px;margin-left:auto;margin-right:auto;line-height:1.5}
[data-theme="dark"] .content-card{background:#121726fa;border-color:#ffffff1a;box-shadow:0 4px 20px #00000059}
[data-theme="dark"] .prompt-ex-body{background:#0d1320cc;color:var(--text-2)}
[data-theme="dark"] .tut-bad-block{background:#dc3c3c1a;border-color:#dc3c3c2e;color:#f07070}
[data-theme="dark"] .stats-row{background:#121726fa;border-color:#ffffff1a}
[data-theme="dark"] :is(.prompt-ex-card,.tbl-wrap,.ex-table-wrap){background:#0d1320;border-color:#ffffff14}
[data-theme="dark"] .anatomy-table td{background:transparent}
.tut-inline-link{color:var(--accent);text-decoration:underline;text-underline-offset:2px;font-weight:500}
[data-theme="dark"] .tip-text strong,[data-theme="dark"] .prog-table th.col-m,[data-theme="dark"] .nav-link.active,[data-theme="dark"] .footer-links a:hover,[data-theme="dark"] .bottom-cta h2,.tut-inline-link:hover{color:var(--accent-hover)}
[data-theme="dark"] .template-tag{font-size:11px;font-weight:700;letter-spacing:0.4px;text-transform:uppercase;padding:3px 10px;border-radius:var(--r-pill);background:#e1f5ee;color:#085041}
[data-theme="dark"] .share-x{background:var(--grad-dark-panel);color:var(--text-2);border-color:#000;border:1px solid var(--border-strong);box-shadow:var(--sh-sm)}
[data-theme="dark"] .share-x:hover{background:var(--grad-dark-panel);color:var(--text)}
.level-basic,.bp-beginner{background:#fce8e6;color:#b3261e;border-color:#f07070}
.level-advanced,.bp-advanced{background:#e1f5ee;color:#085041;border-color:#9fe1cb}
[data-theme="dark"] :is(.formula-step,.step-item,.check-item,.workflow-steps .step-item,.prompt-box,.checklist-score){background:#ffffff14;border-color:#ffffff1a;color:var(--text-2)}
.check-box.checked{background:var(--accent);border-color:var(--accent);position:relative}
.check-box.checked::after{content:"✓";position:absolute;inset:0;display:flex;align-items:center;justify-content:center;color:#fff;font-size:12px;font-weight:700}
.theme-toggle-btn:hover,[data-theme="dark"] .theme-toggle-btn:hover,.prompt-box-copy:hover,.template-copy:hover,.method-copy:hover,.prompt-copy:hover,.prompt-copy-btn:hover,.builder-copy:hover,.check-item.checked{background:var(--accent-soft);border-color:var(--accent-mid)}
.method-hdr{display:flex;align-items:center;gap:12px;width:100%;padding:14px 18px;background:var(--surface-2);border:0;border-bottom:1px solid var(--border);color:inherit;font:inherit;text-align:left;cursor:pointer;user-select:none}
.prompt-box-copy{position:absolute;top:10px;right:12px;font-size:11px;font-weight:600;color:var(--accent);background:var(--surface);border:1px solid var(--border-mid);border-radius:var(--r-sm);padding:4px 10px;cursor:pointer;transition:background var(--transition),border-color var(--transition)}
.prompt-copy{position:absolute;top:10px;right:10px;font-size:11px;font-weight:600;color:var(--accent);background:var(--surface);border:1px solid var(--border-mid);border-radius:var(--r-sm);padding:5px 11px;cursor:pointer;transition:background var(--transition),border-color var(--transition);white-space:nowrap}
.template-copy{position:absolute;top:10px;right:10px;font-size:11px;font-weight:600;color:var(--accent);background:var(--surface);border:1px solid var(--border-mid);border-radius:var(--r-sm);padding:4px 9px;cursor:pointer;transition:background var(--transition),border-color var(--transition)}
.method-copy{position:absolute;top:8px;right:8px;font-size:11px;font-weight:600;color:var(--accent);background:var(--surface);border:1px solid var(--border-mid);border-radius:var(--r-sm);padding:3px 9px;cursor:pointer;transition:background var(--transition),border-color var(--transition)}
.builder-copy{position:absolute;top:10px;right:10px;font-size:11px;font-weight:600;color:var(--accent);background:var(--surface);border:1px solid var(--border-mid);border-radius:var(--r-sm);padding:5px 10px;cursor:pointer;transition:background var(--transition),border-color var(--transition)}
.formula-steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin-bottom:16px}
.checklist-score{text-align:center;padding:14px 16px;background:var(--surface-2);border:1px solid var(--border-mid);border-radius:var(--r-lg);margin-top:10px;font-size:14px;font-weight:600;color:var(--text-2);transition:background var(--transition),color var(--transition)}
.library-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px;margin-bottom:8px}
.internal-links{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-bottom:8px}
.lang-picker-panel.open,.method-card.open .method-body{display:block}
.template-body{padding:12px 14px;font-size:13px;color:var(--text-2);line-height:1.7;position:relative;padding-right:86px}
.method-prompt{background:var(--surface-2);border:1px solid var(--border-mid);border-left:3px solid var(--accent);border-radius:0 var(--r-sm) var(--r-sm) 0;padding:12px 40px 12px 14px;font-size:12px;color:var(--text-2);line-height:1.7;position:relative;white-space:pre-wrap;padding-right:70px}
[data-theme="dark"] :is(.technique-item,.prompt-card-body,.builder-output,.template-item,.template-hdr,.method-prompt,.technique-hdr,.technique-body,.template-body){background:#121726fa;border-color:#ffffff1a;color:var(--text-2)}
[data-theme="dark"] :is(.template-copy,.prompt-copy-btn,.prompt-copy,.builder-copy,.method-copy){background:#0d1320b2;border-color:#ffffff24;color:var(--accent-hover)}
.prog-table td.mid{color:#7a5f00;background:#f4c5421f}
.prog-table th.col-m{color:#eab308}
[data-theme="dark"] .prog-table td.basic{background:#b4b4b414;color:var(--text-3);font-weight:400}
[data-theme="dark"] .prog-table td.mid{background:#fbbf242e;color:#fde68a;font-weight:400}
.t-name{font-size:14px;font-weight:700;color:var(--text);flex:1;min-width:0}
.share-x{background:#111;color:#fff;border:1px solid #ffffff14}
.share-x svg{color:#fff}
.share-x:hover{opacity:.9}
.checklist-score.good{background:var(--success-light);border-color:var(--success-mid);color:var(--success-dark)}
.hero-share{max-width:980px;margin:20px auto 0;display:flex;flex-direction:column;align-items:center;gap:10px}
.share-btns{display:flex;gap:8px;flex-wrap:wrap;justify-content:center;align-items:center;width:100%}
.faq-q::-webkit-details-marker,.cat-section[data-hidden="true"],.formula-step:last-child::after,.method-card .method-body{display:none}
[data-theme="dark"] .checklist-item{background:#1a2032;border-color:#ffffff1a}
[data-theme="dark"] .intro-point{background:#1a2032;border-color:#ffffff1a;color:var(--text)}
[data-theme="dark"] :is(.library-card,.prompt-card,.nav-link-card){background:#1a2032;border-color:#ffffff1a;color:var(--text-2)}
[data-theme="dark"] :is(.bp-inter,.prompt-level.lv-i,.badge-intermediate,.level-intermediate){background:#fef9c3;color:#6e5c00;border-color:#eab308}
.prompt-card-title{font-size:12px;font-weight:700;color:var(--text);display:flex;align-items:center;gap:6px;padding-right:8px;min-width:0;flex:1 1 auto}
.prog-readmore{display:block;margin:10px 14px;font-size:13px;color:var(--text-2)}
.prog-readmore a{font-size:inherit}
.cat-header{display:flex;align-items:center;gap:10px;margin-bottom:14px;padding-bottom:10px;border-bottom:1px solid var(--border)}
.prompt-card{border:1px solid var(--border);border-radius:var(--r-lg);overflow:hidden;background:var(--surface);transition:border-color var(--transition);box-shadow:var(--sh-xs);position:relative;padding-right:0}
.prompt-card-hdr{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:10px 14px;background:var(--surface-2);border-bottom:1px solid var(--border);padding-right:14px}
.prompt-level{font-size:11px;font-weight:700;letter-spacing:0.3px;text-transform:uppercase;padding:2px 8px;border-radius:var(--r-pill);flex:0 0 auto;margin-left:auto}
.prompt-card-body{padding:14px 96px 14px 14px;font-size:13px;color:var(--text-2);line-height:1.7;position:relative;padding-right:92px;white-space:pre-wrap}
.prompt-card-tip{padding:8px 14px;font-size:12px;color:var(--text-3);background:var(--surface-2);border-top:1px solid var(--border);line-height:1.5;margin-right:0;width:auto}
.prompt-copy-btn{position:absolute;top:14px;right:14px;font-size:11px;font-weight:600;color:var(--accent);background:var(--surface);border:1px solid var(--border-mid);border-radius:var(--r-sm);padding:5px 10px;cursor:pointer;transition:background var(--transition),border-color var(--transition);white-space:nowrap;min-height:30px;min-width:44px;display:flex;align-items:center;justify-content:center}
.technique-hdr{display:grid;align-items:start;gap:6px;padding:14px 18px;background:var(--surface-2);border-bottom:1px solid var(--border);grid-template-columns:1fr}
.technique-hdr .t-tag{justify-self:start;order:-1;margin:0 0 2px 0}
.technique-hdr .t-name{line-height:1.2;font-size:14px;white-space:normal;max-width:none;font-weight:700}
.badge-intermediate,.bp-inter,.level-intermediate,.prompt-level.lv-i{background:#fef9c3;color:#6e5c00;border-color:#eab308}
.cat-header h2{font-size:22px;line-height:1.2;margin:0;color:var(--text);font-weight:800;letter-spacing:-0.2px}
.share-em,.share-bm{background:#fff;color:#111318;border:1px solid #1e283c26;box-shadow:var(--sh-xs)}
.share-em:hover,.share-bm:hover{background:#fff;color:#111318;border-color:#1e283c26}

.breadcrumb li+li::before{content:"›";color:var(--text-3);font-size:13px}
:is(.breadcrumb,.footer-links) a{color:var(--text-3);text-decoration:none;transition:color var(--transition)}
.hero-share-label{font-size:12px;color:var(--text-3);font-weight:500;text-align:center}
.tut-wrap .stats-row{background:#fff}
[data-theme="dark"] .tut-wrap .stats-row{background:var(--surface)}
.tut-wrap p a,.tut-wrap li a,.tut-wrap .faq-a a{color:var(--accent)}
.tut-wrap .content-card,.tut-wrap .learn-card,.tut-wrap .benefit-item,.tut-wrap .tut-tip,.tut-wrap .checklist-item,.tut-wrap .prompt-ex-card,.tut-wrap .template-item,.tut-wrap .prompt-card,.tut-wrap .method-card,.tut-wrap .method-prompt,.tut-wrap .technique-item,.tut-wrap .technique-hdr,.tut-wrap .technique-body,.tut-wrap .builder-output,.tut-wrap .library-card,.tut-wrap .bottom-cta,.tut-wrap .series-complete,.tut-wrap .nav-link-card{background:#fff;background-color:#fff}
.tut-wrap .toc-card,.tut-wrap .prompt-ex-header,.tut-wrap .prompt-ex-body,.tut-wrap .faq-list,.tut-wrap .template-hdr,.tut-wrap .template-body,.tut-wrap .method-hdr,.tut-wrap .method-body,.tut-wrap .prompt-card-hdr,.tut-wrap .prompt-card-body,.tut-wrap .prompt-card-tip,.tut-wrap .intro-point,.tut-wrap .mistake-item,.tut-wrap .prompt-box,.tut-wrap .checklist-score{background-color:#fff}
[data-theme="dark"] .tut-wrap .benefit-item{background:var(--surface);background-color:var(--surface);border-color:#ffffff1a}
[data-theme="dark"] :is(.benefit-item,.learn-card,.internal-links .int-link,.stat-item,.toc-card){background:var(--surface);border-color:#ffffff1a;color:var(--text-2)}
[data-theme="dark"] :is(.topic-pill,.meta-pill){background:#1a2032;border-color:#ffffff1a;color:var(--text-2)}
[data-theme="dark"] :is(.learn-card,.internal-links .int-link):hover{background:#1a2032;border-color:#7f77dd59}
.tut-wrap :is(p,li,.faq-a) a:hover,[data-theme="dark"] .faq-q:hover{color:var(--accent-hover)}
[data-theme="dark"] .tut-wrap .tut-surface{background:var(--surface);border-color:#ffffff1a;color:var(--text-2)}
[data-theme="dark"] .tut-wrap .mistake-item{background:var(--surface-2);border-color:var(--border-mid);color:var(--text-2)}
[data-theme="dark"] .tut-wrap .mistake-text{color:var(--text-2)}
[data-theme="dark"] .tut-wrap :is(.toc-card,.intro-point){background:var(--surface);border-color:#ffffff1a;color:var(--text-2)}
[data-theme="dark"] :is(.tut-wrap .technique-hdr,.tut-wrap .prompt-ex-header,.tut-wrap .template-hdr,.tut-wrap .method-hdr,.tut-wrap .prompt-card-hdr,.tut-wrap .mistake-hdr){background:#1a2032;border-color:#ffffff1a;color:#f0f4ff}
[data-theme="dark"] :is(.tut-wrap .method-prompt,.tut-wrap .technique-body,.tut-wrap .prompt-box,.tut-wrap .tut-inner,.tut-wrap .before-after>div){background:#0d1320;border-color:#ffffff1a;color:var(--text-2)}
[data-theme="dark"] :is(.section-sub,.library-name,.formula-step-title,.formula-step-desc,.check-text,.prompt-card-title,.int-link-text,.intro-point-text,.library-desc,.tut-wrap .section-sub,.tut-wrap .sec-sub,.tut-wrap .rule-desc,.tut-wrap .method-desc,.tut-wrap .step-desc,.tut-wrap .mistake-desc,.tut-wrap .formula-step-desc,.tut-wrap .library-desc,.tut-wrap .intro-point-text,.tut-wrap .tip-text){color:var(--text-2)}
[data-theme="dark"] .tut-wrap .formula-el-hdr{background:#1a2032;border-color:#ffffff1a;color:var(--text-2)}
.breadcrumb-wrap{max-width:760px;margin:0 auto;padding:3px 24px;padding-left:16px;padding-right:16px}
.tut-wrap .hero-share{max-width:100%;margin:0 0 24px}
footer,main{position:relative;z-index:1}
.check-item{display:flex;align-items:flex-start;gap:12px;padding:13px 15px;border:1px solid var(--border);border-radius:var(--r-md);background:var(--surface-2);cursor:pointer;transition:background var(--transition),border-color var(--transition),color var(--transition),opacity var(--transition);user-select:none;font:inherit;color:inherit;text-align:left;width:100%}
.btn-row-center{display:flex;justify-content:center;flex-wrap:wrap;gap:10px}
.u-mt-4{margin-top:4px}
.u-mt-20{margin-top:20px}
.u-mb-14{margin-bottom:14px}
.u-mb-18{margin-bottom:18px}
.u-mb-20{margin-bottom:20px}
.u-text-default{color:var(--text)}
.u-text-accent-strong{color:var(--accent);font-weight:700}
.u-text-accent-medium{color:var(--accent);font-weight:600}
.u-sec-sub-compact{margin-bottom:8px;font-size:13px}
.social-trigger{display:block;width:1px;height:1px;margin:0;padding:0;border:0;overflow:hidden;pointer-events:none}
@media (min-width:1025px){.social-trigger{position:relative;top:-72px}}
.sticky-social-shell{position:fixed;left:0;right:0;top:var(--pe-nav-height);z-index:var(--pe-z-sticky-social);background:#fff;border-bottom:1px solid var(--nav-border);box-shadow:0 10px 28px #0f142814;min-height:var(--pe-sticky-social-height);box-sizing:border-box;padding:1px 16px 10px;transform:none;visibility:hidden;opacity:0;pointer-events:none;transition:opacity 140ms ease,visibility 0s linear 140ms;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:geometricPrecision}
.sticky-social-shell.is-visible{transform:none;visibility:visible;opacity:1;pointer-events:auto;transition:opacity 140ms ease,visibility 0s linear 0s}
.sticky-social-inner{max-width:920px;margin:0 auto}
.sticky-social-share-content{display:flex;flex-direction:column;align-items:center;gap:3px;max-width:none;margin:0}
.sticky-social-share .hero-share-label{display:block;margin:0;font-size:12px;line-height:1.2;font-weight:650;text-align:center}
.sticky-social-share .share-btns{flex-wrap:nowrap;justify-content:center;gap:10px}
.sticky-social-share .share-btn,.sticky-social-share .share-label{transform:none;backface-visibility:visible;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:geometricPrecision}
.sticky-social-share .share-btn{min-width:118px;width:118px;max-width:118px;height:36px;flex:1 1 0;will-change:auto}
.sticky-social-share .share-btn:hover{transform:none}
body.pe-mobile-menu-open .sticky-social-shell,.sticky-social-shell.is-suspended{transform:none;visibility:hidden;opacity:0;pointer-events:none;transition:opacity 140ms ease,visibility 0s linear 140ms}
[data-theme="dark"] .sticky-social-shell{background:#0d1320;border-bottom-color:#ffffff1a;box-shadow:0 12px 34px rgba(0,0,0,0.25)}
body.pe-sticky-social-visible .hero-share:not(.sticky-social-share-content){visibility:hidden}

/* Header nav: semantic details dropdown, no hover JS/state machine */
@media (min-width:769px){.nav-logo a{gap:6px}
.nav{padding:0 20px}
.hero-share{max-width:900px;margin-left:auto;margin-right:auto}
.share-btns{flex-wrap:nowrap;justify-content:center;gap:10px}
.share-btn{min-width:118px;flex:1 1 0;width:118px;max-width:118px;justify-content:center}
}
@media (max-width:1120px){.nav{grid-template-columns:minmax(0,1fr) auto;column-gap:10px}
.nav-menu{display:none}
.nav-right{grid-column:2;justify-self:end}
.theme-toggle-btn{order:1}
.lang-picker{order:2}
.hamburger{display:flex;order:3}
body.pe-mobile-menu-open .mobile-menu{position:fixed;top:var(--pe-nav-height,62px);left:0;right:0;max-height:calc(100vh - var(--pe-nav-height,62px));overflow-y:auto;-webkit-overflow-scrolling:touch;z-index:var(--pe-z-mobile-menu)}
}
@media (max-width:1024px){.nav-menu .nav-link.sub-nav-link{display:none}
.share-btns{flex-wrap:nowrap;gap:12px;justify-content:center;align-items:center}
.share-btn{min-width:0;max-width:40px;width:40px;height:40px;padding:0;flex:0 0 40px;gap:0}
.share-btn .share-label{display:none}
.share-btn svg{width:16px;height:16px}
.sticky-social-inner{max-width:100%}
.sticky-social-share .share-btns{gap:12px}
.sticky-social-share .share-btn{min-width:40px;width:40px;max-width:40px;height:40px;flex:0 0 40px;padding:0}
}
@media (max-width:960px){.technique-hdr .t-name{font-size:24px}
}
@media (max-width:768px){.theme-toggle-btn{min-width:38px;padding:0 8px}
.lang-picker-btn{padding:6px 8px}
.nav-logo svg{width:28px;height:28px}
.logo-name{font-size:14px}
.technique-hdr .t-name{font-size:16px}
.nav{padding:0 14px;gap:10px;padding-left:10px}
.nav-logo a{gap:3px}
}
@media (max-width:720px){.formula-steps,.internal-links{grid-template-columns:1fr}
}
@media (max-width:640px){.nav-menu{display:none}
.hamburger{display:flex}
.theme-toggle-btn{min-width:38px;padding:0 8px;font-size:11px}
.sticky-social-shell{padding:1px 10px 10px}
.sticky-social-share .share-btns{gap:8px}
.sticky-social-share .share-btn{min-width:36px;width:36px;max-width:36px;height:36px;flex-basis:36px}
.sticky-social-share .hero-share-label{font-size:11px}
.content-card{padding:20px 16px}
}
@media (max-width:480px){.formula-step::after{display:none}
.before-after,.t-ex-row{grid-template-columns:1fr}
.nav-links-bottom{grid-template-columns:1fr}
.lang-picker-btn .lang-current-name{display:none}
.lang-picker-btn{min-width:42px;justify-content:center}
}

@media (max-width:1024px){
body.pe-mobile-sticky-social .breadcrumb-wrap{padding-top:calc(12px + var(--pe-sticky-social-height,68px))}
body.pe-mobile-sticky-social .article-hero{padding-top:14px}
body.pe-mobile-sticky-social .tut-hero{padding-top:18px}
body.pe-mobile-sticky-social .hero-share{display:none}
body.pe-mobile-sticky-social .sticky-social-shell{visibility:visible;opacity:1;pointer-events:auto}
}
@media (max-width:640px){
body.pe-mobile-sticky-social .breadcrumb-wrap{padding-top:calc(8px + var(--pe-sticky-social-height,68px))}
body.pe-mobile-sticky-social .article-hero{padding-top:10px}
body.pe-mobile-sticky-social .tut-hero{padding-top:14px}
}
.hero-share{min-height:118px}
.hero-share-label{display:block;min-height:18px;line-height:18px}
.share-btns{min-height:40px}
.share-btn{box-sizing:border-box;height:30px;line-height:1;white-space:nowrap}
.share-btn svg{flex:0 0 auto}
@media (min-width:769px){.share-btns{min-height:30px}
.share-btn{width:118px;min-width:118px;max-width:118px;flex:0 0 118px;height:30px}
}
@media (max-width:1024px){.share-btns{min-height:40px}
.share-btn{width:40px;min-width:40px;max-width:40px;flex:0 0 40px;height:40px}
}

/* Branding of CookieBot */