:root{color-scheme:dark;--bg:#070a0f;--panel:#111720;--panel-soft:#0c1118;--line:#293341;--text:#f8fafc;--muted:#aeb8c7;--orange:#f97316;--orange-soft:#fb923c;--blue:#2d67e8;--green:#22c55e}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;line-height:1.65}a{color:inherit}.tutorial-header{position:sticky;top:0;z-index:20;border-bottom:1px solid rgba(255,255,255,.08);background:rgba(7,10,15,.92);backdrop-filter:blur(14px)}.tutorial-header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;width:min(1160px,calc(100% - 36px));margin:auto;padding:14px 0}.tutorial-brand{display:flex;align-items:center;gap:12px;text-decoration:none;font-weight:850;letter-spacing:-.02em}.tutorial-brand img{width:42px;height:42px;object-fit:contain}.tutorial-header-actions{display:flex;align-items:center;gap:10px}.tutorial-header-actions a{padding:9px 13px;border:1px solid #394454;border-radius:9px;color:#dce3ed;text-decoration:none;font-size:13px;font-weight:750}.tutorial-header-actions .primary{border-color:var(--orange);background:var(--orange);color:#fff;box-shadow:0 8px 24px rgba(249,115,22,.2)}.tutorial-header-actions .primary:hover{border-color:var(--orange-soft);background:var(--orange-soft)}.tutorial-shell{display:grid;grid-template-columns:230px minmax(0,820px);justify-content:center;gap:46px;width:min(1160px,calc(100% - 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.tutorial-hero-cta{display:inline-block;margin-top:22px;padding:10px 24px;border:1px solid var(--orange);border-radius:8px;background:var(--orange);color:#fff;text-decoration:none;font-size:16px;font-weight:750;box-shadow:0 8px 24px rgba(249,115,22,.2)}.tutorial-hero-cta:hover{border-color:var(--orange-soft);background:var(--orange-soft)}.tutorial-figure--compact{width:min(100%,220px)}.tutorial-figure--operation-card{width:min(100%,380px)}.tutorial-figure--half{width:min(100%,384px)}.tutorial-figure--icon{width:min(100%,360px)}.tutorial-figure--icon img{width:47px;margin-inline:auto}.tutorial-figure--natural{width:fit-content;max-width:100%}.tutorial-figure--natural img{width:auto;max-width:100%}.tutorial-header-actions .start-language-switch{display:flex;gap:4px;padding:4px;border:1px solid rgba(255,255,255,.2);border-radius:10px;background:rgba(15,23,42,.78);box-shadow:0 8px 28px rgba(0,0,0,.28);backdrop-filter:blur(8px)}.tutorial-header-actions .start-language-switch a{display:inline-flex;align-items:center;gap:7px;min-height:36px;padding:6px 10px;border:1px solid transparent;border-radius:7px;background:transparent;color:#cbd5e1;font-size:13px;font-weight:700}.tutorial-header-actions .start-language-switch a:hover{background:rgba(255,255,255,.08);color:#fff}.tutorial-header-actions .start-language-switch a.active{border-color:rgba(249,115,22,.65);background:rgba(249,115,22,.18);color:#fff}.tutorial-header-actions .start-language-switch a:focus-visible{outline:2px solid var(--orange);outline-offset:2px}.start-language-flag{display:block;flex:0 0 auto;width:18px;height:12px;border:1px solid rgba(255,255,255,.38);border-radius:2px;box-shadow:0 1px 2px rgba(0,0,0,.35)}
.tutorial-comparison{margin:0 0 48px}.tutorial-comparison h2{margin:0 0 16px;font-size:26px}.tutorial-comparison-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.tutorial-comparison article{padding:20px;border:1px solid #303b49;border-radius:12px;background:#0d131b}.tutorial-comparison article.recommended{border-color:#8a4b20;background:#1c120b}.tutorial-comparison strong{color:#fff;font-size:18px}.tutorial-comparison p{margin:7px 0 0;color:var(--muted);font-size:14px}.tutorial-shortcuts{display:grid;gap:10px;margin:20px 0}.tutorial-shortcuts div{display:grid;grid-template-columns:120px 1fr;gap:14px;padding:13px 15px;border:1px solid #303b49;border-radius:10px;background:#0d131b}.tutorial-shortcuts dt{color:#fb923c;font-weight:850}.tutorial-shortcuts dd{margin:0;color:#cbd5e1}
@media(max-width:850px){.tutorial-shell{grid-template-columns:1fr}.tutorial-nav{display:none}.tutorial-result{grid-template-columns:1fr}.tutorial-header-actions>a:not(.primary){display:none}}
@media(max-width:560px){.tutorial-shell{width:min(100% - 28px,820px);padding-top:42px}.tutorial-header-inner{width:calc(100% - 28px)}.tutorial-brand span{display:none}.tutorial-step{grid-template-columns:1fr;gap:12px}.tutorial-step-number{width:38px;height:38px}.tutorial-cta{padding:24px}.tutorial-hero h1{font-size:40px}.tutorial-comparison-grid{grid-template-columns:1fr}.tutorial-shortcuts div{grid-template-columns:1fr;gap:3px}}