:root{--bg: #f5f3ef;--bg2: #eceae4;--bg3: #e2dfd7;--surface: #ffffff;--border: #d4d0c8;--border2: #c4bfb5;--text: #1a1916;--text2: #4a4740;--text3: #7a7670;--accent: #2d5a3d;--accent2: #4a8c5c;--accent-light: #e8f2eb;--red: #8b2020;--red-bg: #fdf0f0;--amber: #7a4a10;--amber-bg: #fdf5e8;--blue: #1a3d6e;--blue-bg: #eef4fb;--purple: #3d2a6e;--purple-bg: #f2eefc;--teal: #0d5040;--teal-bg: #e8f5f0;--radius: 8px;--radius-lg: 12px;--shadow: 0 1px 3px rgba(0,0,0,.08), 0 4px 12px rgba(0,0,0,.04);--shadow-lg: 0 4px 16px rgba(0,0,0,.1), 0 8px 32px rgba(0,0,0,.06);--font: "Georgia", "Noto Serif SC", serif;--font-sans: "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif;--font-mono: "Menlo", "Consolas", monospace}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{font-family:var(--font-sans);background:var(--bg);color:var(--text);font-size:14px;line-height:1.6}#sidebar{position:fixed;top:0;left:0;width:240px;height:100vh;background:var(--surface);border-right:1px solid var(--border);overflow-y:auto;z-index:100;display:flex;flex-direction:column;transition:transform .3s ease}#sidebar-header{padding:20px 16px 16px;border-bottom:1px solid var(--border);background:var(--accent);color:#fff}#sidebar-header h1{font-size:13px;font-weight:600;letter-spacing:.03em;line-height:1.4}#sidebar-header p{font-size:11px;opacity:.75;margin-top:4px}#sidebar-progress{padding:10px 16px;border-bottom:1px solid var(--border);background:var(--bg)}#sidebar-progress .prog-lbl{font-size:10px;color:var(--text3);margin-bottom:5px;letter-spacing:.05em;text-transform:uppercase}#prog-bar{height:4px;background:var(--bg2);border-radius:2px;overflow:hidden}#prog-fill{height:100%;background:var(--accent2);border-radius:2px;transition:width .4s ease;width:0%}#prog-num{font-size:10px;color:var(--text3);margin-top:4px}.nav-section{padding:8px 0}.nav-section-title{font-size:10px;font-weight:600;color:var(--text3);letter-spacing:.08em;text-transform:uppercase;padding:4px 16px 2px}.nav-item{display:flex;align-items:center;gap:8px;padding:7px 16px;cursor:pointer;border:none;background:transparent;width:100%;text-align:left;font-size:12px;color:var(--text2);transition:all .15s;border-left:2px solid transparent}.nav-item:hover{background:var(--bg);color:var(--text)}.nav-item.active{background:var(--accent-light);color:var(--accent);border-left-color:var(--accent);font-weight:500}.nav-item .nav-num{font-size:10px;font-weight:600;width:18px;height:18px;border-radius:50%;background:var(--bg2);color:var(--text3);display:flex;align-items:center;justify-content:center;flex-shrink:0}.nav-item.active .nav-num{background:var(--accent);color:#fff}.nav-item .nav-done{font-size:9px;margin-left:auto;color:var(--accent2);opacity:0;transition:opacity .2s}.nav-item.done .nav-done{opacity:1}#main{margin-left:240px;padding:0;min-height:100vh}.page-header{padding:32px 40px 24px;border-bottom:1px solid var(--border);background:var(--surface)}.page-header .chapter{font-size:11px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--text3);margin-bottom:8px}.page-header h2{font-size:26px;font-weight:700;color:var(--text);font-family:var(--font);line-height:1.3}.page-header .subtitle{font-size:14px;color:var(--text2);margin-top:8px;line-height:1.6;max-width:640px}.page-header .tags{display:flex;gap:6px;flex-wrap:wrap;margin-top:12px}.tag{font-size:11px;padding:2px 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1fr;gap:10px;margin-bottom:12px}.grid-3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:10px;margin-bottom:12px}.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-bottom:12px}.metric{background:var(--bg);border-radius:var(--radius);padding:12px 14px}.metric-lbl{font-size:11px;color:var(--text3);margin-bottom:4px}.metric-val{font-size:20px;font-weight:700;color:var(--text)}.metric-sub{font-size:11px;color:var(--text3);margin-top:2px}.tabs{display:flex;gap:4px;flex-wrap:wrap;margin-bottom:16px}.tab-btn{font-size:12px;padding:5px 12px;border-radius:20px;border:1px solid var(--border);background:transparent;color:var(--text2);cursor:pointer;transition:all 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var(--border2)}.path-lbl{font-size:11px;color:var(--text3);text-align:center;line-height:1.3}.path-arr{color:var(--border2);font-size:14px;padding:0 2px;flex-shrink:0;margin-top:-8px}.landing-footer{background:var(--surface);border-top:1px solid var(--border);padding:20px 56px;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px}.landing-footer p{font-size:12px;color:var(--text3)}@media (max-width: 768px){.landing-hero{padding:52px 20px 36px}.landing-title{font-size:28px}.landing-body{padding:24px 20px 36px}.module-grid{grid-template-columns:1fr 1fr}.landing-feature-row{grid-template-columns:1fr}.landing-footer{padding:16px 20px}.landing-stats{gap:20px}}@media (max-width: 768px){#sidebar{transform:translate(-100%)}#sidebar.open{transform:translate(0)}#main{margin-left:0}#menu-toggle{display:flex;align-items:center;justify-content:center}.content{padding:20px 16px}.page-header{padding:52px 16px 16px}.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}.oee-display,.scenario-grid{grid-template-columns:1fr 1fr}.pro-con{grid-template-columns:1fr}.page-nav{padding:16px}.d8-stepper{gap:1px}.d8-step{min-width:44px}.data-table{font-size:11px}.data-table th,.data-table td{padding:6px 8px}}