@font-face{font-family:Nunito;font-style:normal;font-weight:500;font-display:swap;src:url(/fonts/nunito-latin-ext-500.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Nunito;font-style:normal;font-weight:500;font-display:swap;src:url(/fonts/nunito-latin-500.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Nunito;font-style:normal;font-weight:700;font-display:swap;src:url(/fonts/nunito-latin-ext-700.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Nunito;font-style:normal;font-weight:700;font-display:swap;src:url(/fonts/nunito-latin-700.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Nunito;font-style:normal;font-weight:800;font-display:swap;src:url(/fonts/nunito-latin-ext-800.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Nunito;font-style:normal;font-weight:800;font-display:swap;src:url(/fonts/nunito-latin-800.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:"Source Sans 3";font-style:italic;font-weight:400;font-display:swap;src:url(/fonts/source-sans-3-latin-ext-400-italic.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:"Source Sans 3";font-style:italic;font-weight:400;font-display:swap;src:url(/fonts/source-sans-3-latin-400-italic.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:"Source Sans 3";font-style:italic;font-weight:600;font-display:swap;src:url(/fonts/source-sans-3-latin-ext-600-italic.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:"Source Sans 3";font-style:italic;font-weight:600;font-display:swap;src:url(/fonts/source-sans-3-latin-600-italic.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:"Source Sans 3";font-style:normal;font-weight:400;font-display:swap;src:url(/fonts/source-sans-3-latin-ext-400.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:"Source Sans 3";font-style:normal;font-weight:400;font-display:swap;src:url(/fonts/source-sans-3-latin-400.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:"Source Sans 3";font-style:normal;font-weight:500;font-display:swap;src:url(/fonts/source-sans-3-latin-ext-500.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:"Source Sans 3";font-style:normal;font-weight:500;font-display:swap;src:url(/fonts/source-sans-3-latin-500.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:"Source Sans 3";font-style:normal;font-weight:600;font-display:swap;src:url(/fonts/source-sans-3-latin-ext-600.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:"Source Sans 3";font-style:normal;font-weight:600;font-display:swap;src:url(/fonts/source-sans-3-latin-600.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:"Source Sans 3";font-style:normal;font-weight:700;font-display:swap;src:url(/fonts/source-sans-3-latin-ext-700.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:"Source Sans 3";font-style:normal;font-weight:700;font-display:swap;src:url(/fonts/source-sans-3-latin-700.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}:root{--paper: #f8f4ed;--paper-2: #f3ede0;--surface: #ffffff;--surface-2: #fbf8f1;--ink: #1b1814;--ink-2: #2c2620;--ink-3: #4a4137;--muted: #6f6558;--subtle: #a39888;--border: #e6dfd0;--border-soft: #efe9dc;--border-strong:#d4ccba;--ez: #c8102e;--ez-dark: #9c0d24;--ez-soft: #fdebed;--ez-edge: #f3c8ce;--slot-elite: #b8a060;--slot-pro: #3a6b7a;--slot-master: #2b2b2b;--success: #4f7a3f;--success-soft: #e8f0db;--warn: #b06a1a;--display: "Nunito", system-ui, sans-serif;--body: "Source Sans 3", system-ui, -apple-system, sans-serif;--mono: ui-monospace, "JetBrains Mono", Menlo, monospace;--r-1: 4px;--r-2: 8px;--r-3: 14px;--shadow-1: 0 1px 0 rgba(27,24,20,.04), 0 1px 2px rgba(27,24,20,.04);--shadow-2: 0 1px 0 rgba(27,24,20,.04), 0 6px 18px rgba(27,24,20,.06);--rail-w: 268px;--content-w: 760px}*,*:before,*:after{box-sizing:border-box}html,body{margin:0;padding:0}body{background:var(--paper);color:var(--ink);font-family:var(--body);font-size:16px;line-height:1.55;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}button{font-family:inherit}a{color:inherit}img,svg{display:block;max-width:100%}.app{display:grid;grid-template-columns:var(--rail-w) 1fr;min-height:100vh}@media(max-width:900px){.app{grid-template-columns:1fr}.rail{display:none}.topbar{display:flex!important}}.main{min-width:0;display:flex;flex-direction:column}.page{max-width:1180px;width:100%;margin:0 auto;padding:48px 64px 72px}.page.narrow{max-width:860px}@media(max-width:1100px){.page{padding:40px 32px 64px}}.rail{background:var(--surface-2);border-right:1px solid var(--border);padding:22px 0 28px;position:sticky;top:0;align-self:start;height:100vh;overflow-y:auto}.rail-header{padding:0 22px 18px;border-bottom:1px solid var(--border-soft);display:flex;align-items:center;gap:12px}.rail-header .wordmark{font-family:var(--display);font-weight:800;font-size:15.5px;letter-spacing:-.015em;color:var(--ink);line-height:1.15;min-width:0;white-space:nowrap}.rail-header .wordmark small{display:block;font-family:var(--body);font-weight:700;font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin-top:4px;white-space:nowrap}.rail-meta{padding:14px 22px 6px;font-family:var(--body);font-size:12.5px;color:var(--muted);white-space:nowrap}.rail-meta-link{display:block;text-decoration:none;cursor:pointer;border-radius:var(--r-1);margin:0 8px;padding-left:14px;padding-right:14px;transition:background .12s}.rail-meta-link:hover{background:#00000009}.rail-meta-link:hover strong{color:var(--ez-dark)}.rail-meta strong{font-family:var(--display);font-weight:800;font-size:13.5px;color:var(--ink);letter-spacing:.01em}.rail-group{padding:18px 22px 4px;font-family:var(--body);font-size:10.5px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--subtle)}.rail-row{display:flex;align-items:center;gap:10px;border-radius:var(--r-1);color:var(--ink-2);text-decoration:none;border-left:3px solid transparent;margin:1px 8px 1px 0;padding:9px 22px 9px 19px;cursor:pointer}.rail-row:hover{background:#00000006}.rail-row .num{font-family:var(--display);font-weight:700;font-size:11px;color:var(--subtle);width:14px;display:inline-block}.rail-row .label{font-family:var(--body);font-size:14px;font-weight:500;flex:1;line-height:1.25}.rail-row .time{font-family:var(--body);font-size:11px;font-weight:600;color:var(--subtle);white-space:nowrap}.rail-row.is-current{background:var(--ez-soft);border-left:3px solid var(--ez);padding-left:16px}.rail-row.is-current .label{font-weight:700;color:var(--ink)}.rail-row.is-current .num{color:var(--ez-dark);font-weight:800}.rail-row.is-done .label{color:var(--ink-3)}.rail-row.is-done .num{color:var(--muted)}.rail-row.is-todo .label{color:var(--ink-3)}.rail-sublist{padding-left:0;border-left:1px solid var(--border-soft);margin:4px 0 6px 35px;display:flex;flex-direction:column}.rail-subrow{display:flex;align-items:flex-start;gap:8px;padding:7px 12px 7px 14px;margin-right:8px;border-radius:var(--r-1);color:var(--ink-3);text-decoration:none;cursor:pointer;border-left:2px solid transparent;margin-left:-1px;font-family:var(--body);font-size:12.5px;line-height:1.35}.rail-subrow:hover{background:#00000006}.rail-subrow .sub-marker{width:8px;height:8px;border-radius:999px;border:1.5px solid var(--subtle);flex:0 0 8px;margin-top:5px}.rail-subrow .sub-label{flex:1}.rail-subrow.is-done .sub-marker{background:var(--ink);border-color:var(--ink)}.rail-subrow.is-done .sub-label{color:var(--ink-3)}.rail-subrow.is-current{background:var(--ez-soft);border-left:2px solid var(--ez);margin-left:-2px;padding-left:14px}.rail-subrow.is-current .sub-marker{background:var(--ez);border-color:var(--ez)}.rail-subrow.is-current .sub-label{color:var(--ink);font-weight:700}.rail-row .marker{width:16px;height:16px;display:inline-flex;align-items:center;justify-content:center}.rail-row .marker svg{display:block}.rail-section-rule{margin:14px 22px 0;border:none;border-top:1px dashed var(--border);height:0}.topbar{display:none;padding:12px 20px;background:var(--surface-2);border-bottom:1px solid var(--border);align-items:center;gap:14px}.topbar .ez-mini{width:32px;height:32px}.topbar .progress-strip{flex:1;display:flex;gap:4px}.topbar .progress-strip .seg{flex:1;height:6px;border-radius:999px;background:var(--border)}.topbar .progress-strip .seg.is-done{background:var(--ink)}.topbar .progress-strip .seg.is-current{background:var(--ez)}.topbar .meta{font-size:12px;color:var(--muted);font-weight:600;font-family:var(--body)}.ez-badge{display:inline-flex;align-items:center;justify-content:center;position:relative}h1,h2,h3,h4{font-family:var(--display);letter-spacing:-.015em;color:var(--ink);margin:0}.eyebrow{font-family:var(--body);font-weight:700;font-size:11.5px;letter-spacing:.18em;text-transform:uppercase;color:var(--ez-dark);margin:0 0 12px}.eyebrow.neutral{color:var(--muted)}.chip{display:inline-flex;align-items:center;gap:6px;padding:3px 11px 3px 9px;border:1px solid var(--border-strong);border-radius:999px;background:var(--surface);font-family:var(--body);font-size:12.5px;font-weight:600;color:var(--ink-2);white-space:nowrap;line-height:1.4}.chip svg{flex:0 0 auto}.chip.is-priority{background:var(--ez-soft);border-color:var(--ez-edge);color:var(--ez-dark)}.chip.is-optional{background:var(--surface-2);color:var(--muted)}.chip.is-ghost{background:transparent;border-color:var(--border);color:var(--muted)}.chip.is-success{background:var(--success-soft);border-color:#cfdfb8;color:var(--success)}.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 20px;border-radius:var(--r-1);font-family:var(--body);font-size:14.5px;font-weight:700;cursor:pointer;border:1px solid transparent;text-decoration:none;transition:background .15s ease,border-color .15s ease,transform .05s ease;white-space:nowrap}.btn-primary{background:var(--ink);color:var(--paper);border-color:var(--ink)}.btn-primary:hover{background:#000}.btn-primary:active{transform:translateY(1px)}.btn-secondary{background:transparent;color:var(--ink);border-color:var(--ink)}.btn-secondary:hover{background:#1b18140a}.btn-tertiary{background:transparent;color:var(--ink-2);border-color:var(--border-strong)}.btn-tertiary:hover{background:#1b181408}.lesson-title{font-family:var(--display);font-weight:800;font-size:44px;line-height:1.08;letter-spacing:-.02em;color:var(--ink);max-width:24ch}.lesson-meta{display:flex;align-items:center;gap:10px;margin-top:18px;flex-wrap:wrap}.lesson-objective{margin-top:12px;font-family:var(--body);font-size:16.5px;font-weight:500;color:var(--ink-3);max-width:62ch;line-height:1.5}.md{font-family:var(--body);font-size:17px;line-height:1.62;color:var(--ink-2);max-width:var(--content-w)}.md p{margin:0 0 1.3em}.md p:last-child{margin-bottom:0}.md>*+h2{margin-top:2em}.md>*+h3{margin-top:1.6em}.md>h2+*,.md>h3+*{margin-top:1.05em}.md h2{font-family:var(--display);font-weight:800;font-size:28px;line-height:1.2;color:var(--ink);margin-top:2em;letter-spacing:-.015em}.md h3{font-family:var(--display);font-weight:700;font-size:19.5px;line-height:1.3;color:var(--ink);margin-top:1.7em}.md strong{color:var(--ink);font-weight:700}.md em{font-style:italic}.md a{color:var(--ink);text-decoration:none;border-bottom:1.5px solid var(--border-strong);padding-bottom:1px;transition:border-color .15s ease}.md a:hover{border-bottom-color:var(--ink)}.md ul,.md ol{padding-left:1.4em;margin-block:1em}.md ul li,.md ol li{margin:.5em 0}.md ul li::marker{color:var(--subtle)}.md ol li::marker{color:var(--muted);font-weight:600}.md blockquote{margin:1.4em 0;padding:14px 20px;border-left:3px solid var(--border-strong);background:var(--surface-2);color:var(--ink-3);font-size:15.5px;border-radius:0 var(--r-1) var(--r-1) 0}.md blockquote.figure-caption{background:transparent;border-left:none;padding:0;text-align:left;font-size:14px;color:var(--muted);margin:-.4em 0 1.4em;font-style:italic}.md table{border-collapse:collapse;width:100%;margin:1.4em 0;font-size:15px}.md th,.md td{border:1px solid var(--border);padding:10px 14px;text-align:left}.md th{background:var(--surface-2);font-weight:700;color:var(--ink)}.md code{font-family:var(--mono);font-size:.92em;background:var(--surface-2);border:1px solid var(--border-soft);padding:1px 6px;border-radius:3px}.media-row{display:flex;gap:28px;align-items:flex-start;margin:1.6em 0 2em;max-width:var(--content-w)}.media-row__video{flex:0 0 auto;width:280px;order:2}.media-row__video .video-placeholder{margin:0;width:100%;max-width:100%}.media-row__body{flex:1 1 0;min-width:0;order:1}.media-row__body>:first-child{margin-top:0}.media-row__body>:last-child{margin-bottom:0}.media-row__body p{font-size:16px;line-height:1.6;color:var(--ink-2);margin:0 0 13px;text-wrap:pretty}.media-row__body ul{margin:13px 0 0;padding:0;list-style:none;display:flex;flex-direction:column;gap:9px}.media-row__body li{font-size:15.5px;line-height:1.45;color:var(--ink-2);padding-left:18px;position:relative}.media-row__body li:before{content:"";position:absolute;left:0;top:8px;width:7px;height:7px;border-radius:2px;background:var(--ez)}.media-row__body li strong{color:var(--ink);font-weight:700}@media(max-width:720px){.media-row{flex-direction:column;gap:16px}.media-row__video{width:100%;max-width:360px;align-self:center}}.video-placeholder{position:relative;margin:1.6em 0 2em;max-width:var(--content-w);aspect-ratio:16 / 9;border:1px solid var(--border);border-radius:var(--r-2);background:repeating-linear-gradient(45deg,var(--surface-2) 0,var(--surface-2) 14px,var(--surface) 14px,var(--surface) 28px);overflow:hidden;display:flex;align-items:center;justify-content:center}.video-placeholder:before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,#1b181405,#1b18140f);pointer-events:none}.video-placeholder:after{content:"";position:relative;width:60px;height:60px;background:var(--ink);border-radius:999px;z-index:1;box-shadow:0 6px 22px #1b181438}.video-placeholder .play-tri{position:absolute;z-index:2;width:0;height:0;border-left:18px solid var(--paper);border-top:11px solid transparent;border-bottom:11px solid transparent;margin-left:5px}.video-placeholder .vp-meta{position:absolute;left:16px;bottom:14px;z-index:2;font-family:var(--body);font-size:12px;font-weight:700;color:var(--ink);background:#f8f4edeb;border:1px solid var(--border);border-radius:999px;padding:4px 12px;letter-spacing:.04em;display:inline-flex;align-items:center;gap:8px}.video-placeholder .vp-meta .vp-len{color:var(--muted);font-weight:600}.video-placeholder .vp-tag{position:absolute;right:14px;top:14px;z-index:2;font-family:var(--body);font-size:10.5px;font-weight:800;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);background:#f8f4edeb;border:1px solid var(--border);border-radius:999px;padding:3px 10px}.video-placeholder.is-real{background:#000;display:block}.video-placeholder.is-real:before,.video-placeholder.is-real:after{display:none}.video-placeholder.is-real iframe{width:100%;height:100%;border:0;display:block}.video-placeholder.is-short{aspect-ratio:9 / 16;max-width:360px;margin-left:auto;margin-right:auto;background:#000}.video-placeholder.is-link{background:#111}.video-placeholder.is-link:before,.video-placeholder.is-link:after{display:none}.video-placeholder .vp-link{position:absolute;inset:0;display:block;text-decoration:none;color:inherit;cursor:pointer}.video-placeholder .vp-thumb{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block;transition:transform .35s ease}.video-placeholder .vp-link:hover .vp-thumb{transform:scale(1.025)}.video-placeholder .vp-shade{position:absolute;inset:0;background:linear-gradient(180deg,#0000000f,#0000 30% 55%,#00000073);pointer-events:none}.video-placeholder.is-link .play-tri{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);margin-left:0;width:0;height:0;border-left:22px solid #fff;border-top:14px solid transparent;border-bottom:14px solid transparent;filter:drop-shadow(0 2px 8px rgba(0,0,0,.5));z-index:3}.video-placeholder.is-link .play-tri:before{content:"";position:absolute;left:-38px;top:-28px;width:70px;height:70px;background:#0000008c;border:2px solid rgba(255,255,255,.9);border-radius:999px;z-index:-1}.video-placeholder.is-link .vp-tag{color:var(--ink);background:#fffffff0;border-color:#fff3}.video-placeholder.is-link .vp-meta{background:#fffffff0}.figure{margin:2em 0 .4em;border:1px solid var(--border);background:var(--surface);border-radius:var(--r-2);overflow:hidden;max-width:var(--content-w)}.figure .figure-frame{background:var(--surface);padding:18px 22px}.figure svg{width:100%;height:auto;display:block}.figure .figure-cap{padding:12px 22px 14px;border-top:1px solid var(--border-soft);background:var(--surface-2);font-family:var(--body);font-size:13.5px;line-height:1.5;color:var(--ink-3)}.figure .figure-label-inline{font-family:var(--body);font-weight:700;letter-spacing:.08em;text-transform:uppercase;font-size:11.5px;color:var(--muted);margin-right:6px}.figure-pending{margin:2em 0 .4em;border:1px dashed var(--border-strong);background:var(--surface-2);border-radius:var(--r-2);padding:22px 26px;max-width:var(--content-w);font-family:var(--body);font-size:14px;color:var(--muted)}.figure-pending strong{color:var(--ink-3);display:block;margin-bottom:4px;font-family:var(--display);font-weight:700}.aside-rail{margin-top:3.5em;padding-top:2em;border-top:1px solid var(--border);display:grid;grid-template-columns:1fr 1fr;gap:36px}@media(max-width:1100px){.aside-rail{grid-template-columns:1fr}}.aside-rail h3{font-family:var(--display);font-weight:800;font-size:14px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin-bottom:12px}.aside-rail .md{font-size:14.5px;line-height:1.55}.aside-rail .md p{margin:.7em 0}.aside-rail ul{padding-left:1.2em;margin:0}.aside-rail li{margin:.35em 0;font-size:14.5px;color:var(--ink-3)}.continue-card{margin-top:3em;padding:22px 26px;border:1px solid var(--border-strong);border-radius:var(--r-2);background:var(--surface);display:flex;align-items:center;gap:20px;flex-wrap:wrap}.continue-card .label{font-family:var(--body);font-size:11.5px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--muted)}.continue-card .next-title{font-family:var(--display);font-weight:800;font-size:22px;color:var(--ink);letter-spacing:-.01em;margin-top:2px}.continue-card .next-row{flex:1;min-width:260px}.footer-disclaimer{margin-top:2em;padding:16px 0;border-top:1px solid var(--border-soft);font-family:var(--body);font-size:12.5px;color:var(--muted);display:flex;align-items:center;gap:8px}.feedback{margin-top:1.4em;padding:18px 22px;border:1px solid var(--border);border-radius:var(--r-2);background:var(--surface);display:flex;gap:18px;align-items:center;flex-wrap:wrap}.feedback .fb-head{font-family:var(--display);font-weight:700;font-size:15px;color:var(--ink)}.feedback .fb-sub{font-family:var(--body);font-size:12.5px;color:var(--muted);margin-top:2px}.feedback .fb-rating{display:inline-flex;gap:4px}.feedback .star{width:22px;height:22px;border-radius:4px;border:1px solid var(--border-strong);background:var(--surface);display:inline-flex;align-items:center;justify-content:center;cursor:pointer;color:var(--subtle)}.feedback .star.is-on{background:var(--ink);color:var(--paper);border-color:var(--ink)}.feedback textarea{flex:1;min-width:200px;font-family:var(--body);font-size:14px;padding:8px 12px;border:1px solid var(--border);border-radius:var(--r-1);background:var(--surface-2);color:var(--ink-2);resize:vertical;min-height:38px}.feedback button.fb-send{background:var(--ink);color:var(--paper);border:1px solid var(--ink);padding:8px 14px;border-radius:var(--r-1);font-weight:700;font-size:13px;cursor:pointer}.feedback.is-sent{background:var(--success-soft);border-color:#cfdfb8}.feedback.is-sent .fb-head{color:var(--success)}.hero{padding-top:8px}.hero-grid{display:grid;grid-template-columns:1.55fr .85fr;gap:56px;align-items:center}@media(max-width:1100px){.hero-grid{grid-template-columns:1fr}}.hero h1{font-family:var(--display);font-weight:800;font-size:56px;line-height:1.04;letter-spacing:-.025em;color:var(--ink);margin:8px 0 0}.hero .lede{margin-top:18px;font-size:17.5px;line-height:1.6;color:var(--ink-3);max-width:58ch}.hero .ctas{margin-top:28px;display:flex;flex-wrap:wrap;gap:12px;align-items:center}.hero .ctas .no-signup{margin-left:6px;font-family:var(--body);font-size:12.5px;color:var(--muted);flex-basis:100%;margin-top:-4px}.entry-row{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:56px}@media(max-width:800px){.entry-row{grid-template-columns:1fr}}.entry-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-3);padding:24px 26px;position:relative;display:flex;flex-direction:column;cursor:pointer;transition:border-color .15s,transform .1s}.entry-card:hover{border-color:var(--border-strong)}.entry-card .eyebrow{margin-bottom:6px}.entry-card h3{font-family:var(--display);font-weight:800;font-size:24px;color:var(--ink);letter-spacing:-.01em;margin:0 0 8px}.entry-card p{font-size:15px;color:var(--ink-3);margin:0 0 14px;line-height:1.5}.entry-card .more{margin-top:auto;display:inline-flex;align-items:center;gap:6px;font-weight:700;font-size:14px;color:var(--ink)}.pain-chips{display:flex;flex-wrap:wrap;gap:6px;margin:4px 0 12px;max-height:0;overflow:hidden;transition:max-height .35s ease}.pain-chips.is-open{max-height:220px;margin-top:8px}.pain-chip{display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:999px;background:var(--surface-2);border:1px solid var(--border-strong);color:var(--ink-2);font-family:var(--body);font-size:13px;font-weight:600;cursor:pointer}.pain-chip:hover{background:var(--ez-soft);border-color:var(--ez-edge);color:var(--ez-dark)}.pain-chip .bullet{width:6px;height:6px;border-radius:999px;background:var(--ez);display:inline-block}.section-head{display:flex;align-items:baseline;gap:16px;margin:64px 0 16px;flex-wrap:wrap}.section-head h2{font-family:var(--display);font-weight:800;font-size:28px;letter-spacing:-.015em;color:var(--ink);margin:0;flex:0 0 auto;white-space:nowrap}.section-head .sub{font-family:var(--body);font-size:13.5px;color:var(--muted);flex:1 1 240px;min-width:220px}.modules{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-2);overflow:hidden}.modules .module-head,.modules .module-row{display:grid;grid-template-columns:38px 1fr 152px 116px 100px 32px;gap:14px;align-items:center;padding:14px 18px}.modules .module-head{border-bottom:1px solid var(--border);background:var(--surface-2)}.modules .module-head span{font-family:var(--body);font-size:10.5px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--subtle)}.modules .module-row{border-bottom:1px solid var(--border-soft);cursor:pointer;transition:background .12s}.modules .module-row:last-child{border-bottom:none}.modules .module-row:hover{background:var(--surface-2)}.modules .module-row.is-priority{background:var(--ez-soft)}.modules .module-row.is-priority:hover{background:#fad9dc}.modules .module-row .n{font-family:var(--display);font-weight:800;font-size:15px;color:var(--subtle)}.modules .module-row.is-priority .n{color:var(--ez-dark)}.modules .module-row .title-cell{display:flex;flex-direction:column;gap:4px}.modules .module-row .title-cell .t{font-family:var(--display);font-weight:700;font-size:16.5px;color:var(--ink);letter-spacing:-.005em;display:flex;align-items:center;gap:10px}.modules .module-row .title-cell .b{font-family:var(--body);font-size:13px;color:var(--muted);line-height:1.45}.modules .module-row .fmt{display:inline-flex;align-items:center;gap:7px;font-family:var(--body);font-size:13px;font-weight:600;color:var(--ink-2)}@media(max-width:1100px){.modules .module-head{display:none}.modules .module-row{grid-template-columns:28px 1fr;grid-template-rows:auto auto;row-gap:8px}.modules .module-row .fmt,.modules .module-row .chip-diff,.modules .module-row .chip-prereq,.modules .module-row .arrow{grid-column:2;grid-row:auto}}.signin-band{margin-top:36px;padding:14px 20px;border:1px dashed var(--border-strong);border-radius:var(--r-2);background:var(--surface-2);font-family:var(--body);font-size:14.5px;color:var(--ink-3)}.signin-band a,.inline-link{color:var(--ink);font-weight:600;text-decoration:none;border-bottom:1.5px solid var(--ink);padding-bottom:1px}.deeper-rail{margin-top:40px;display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px}.deeper-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-2);padding:14px 16px;display:flex;align-items:flex-start;gap:10px;text-decoration:none;color:var(--ink);transition:border-color .15s}.deeper-card:hover{border-color:var(--border-strong)}.deeper-card .t{font-family:var(--display);font-weight:700;font-size:14.5px;line-height:1.3;color:var(--ink);flex:1}.deeper-card .src{font-family:var(--body);font-size:12px;color:var(--muted);margin-top:4px}.app-strip{margin-top:36px;padding:14px 0;border-top:1px solid var(--border-soft);font-family:var(--body);font-size:14.5px;color:var(--ink-3);display:flex;align-items:center;gap:10px;flex-wrap:wrap}.app-strip .app-link{color:var(--ez-dark);font-weight:700;border-bottom:2px solid var(--ez);padding-bottom:1px;text-decoration:none}.app-strip .dot{width:8px;height:8px;border-radius:999px;background:var(--ez);display:inline-block;flex:0 0 8px}.wrap-hero{display:flex;align-items:flex-start;gap:32px;padding:18px 0 36px;border-bottom:1px solid var(--border-soft)}.wrap-hero .ez-badge{flex:0 0 auto}.faq-card{margin:14px 0 0;border:1px solid var(--border);border-radius:var(--r-2);background:var(--surface);overflow:hidden}.faq-card summary{padding:14px 44px 14px 18px;font-family:var(--display);font-weight:700;font-size:15.5px;color:var(--ink);cursor:pointer;list-style:none;display:block;position:relative}.faq-card summary::-webkit-details-marker{display:none}.faq-card summary:after{content:"+";position:absolute;right:18px;top:50%;transform:translateY(-52%);font-family:var(--display);font-weight:500;font-size:22px;color:var(--muted);line-height:1}.faq-card[open] summary{border-bottom:1px solid var(--border-soft)}.faq-card[open] summary:after{content:"−"}.faq-card .a{padding:12px 18px 16px;font-family:var(--body);font-size:15px;color:var(--ink-3);line-height:1.55}.tier-slots{margin-top:16px;display:inline-flex;gap:10px;align-items:center}.tier-slot{width:38px;height:38px;border-radius:999px;border:1.5px dashed var(--border-strong);background:var(--surface-2);font-family:var(--display);font-weight:700;font-size:11px;color:var(--subtle);display:inline-flex;align-items:center;justify-content:center;letter-spacing:.06em}.faq{display:flex;flex-direction:column;gap:2px;border:1px solid var(--border);border-radius:var(--r-2);overflow:hidden;background:var(--surface)}.faq__item{padding:16px 18px 17px;border-top:1px solid var(--border-soft)}.faq__item:first-child{border-top:none}.faq__q{font-family:var(--display);font-weight:800;font-size:15.5px;line-height:1.4;color:var(--ink);margin-bottom:7px;display:flex;gap:9px}.faq__q:before{content:"Q";flex:0 0 auto;font-size:12px;font-weight:800;color:var(--ez);background:var(--ez-soft);border-radius:5px;width:20px;height:20px;display:flex;align-items:center;justify-content:center;margin-top:1px}.faq__a{font-size:15px;line-height:1.55;color:var(--ink-2);padding-left:29px;text-wrap:pretty}.faq__a a{color:var(--ez-dark)}.ls-crumb{display:flex;align-items:center;gap:8px;margin-bottom:22px;font-family:var(--body);font-size:12px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;white-space:nowrap}.ls-crumb__a{color:var(--muted)}.ls-crumb__sep{color:var(--subtle)}.ls-crumb__b{color:var(--ink-2)}.ls-secount{margin-left:auto;font-family:var(--body);font-size:12.5px;font-weight:700;color:var(--muted);letter-spacing:.06em;text-transform:uppercase;white-space:nowrap}.ls-strip{display:flex;gap:4px;margin:0 0 30px}.ls-seg{flex:1;height:6px;border-radius:999px;border:none;background:var(--border);cursor:pointer;padding:0;transition:background .15s ease}.ls-seg.is-done{background:var(--ink)}.ls-seg.is-current{background:var(--ez)}.ls-seg:hover{background:var(--subtle)}.ls-seg.is-current:hover{background:var(--ez-dark)}.ls-h2{font-family:var(--display);font-weight:800;font-size:32px;line-height:1.15;letter-spacing:-.018em;color:var(--ink);margin:0 0 18px;text-wrap:balance}.ls-nav{margin-top:38px;display:flex;gap:12px;align-items:center;flex-wrap:wrap}.ls-nav__back{transform:scaleX(-1);display:inline-flex}.ls-body>*+*{margin-top:22px}.ls-prose p{font-size:16.5px;line-height:1.62;color:var(--ink-2);margin:0 0 14px;text-wrap:pretty}.ls-prose p:last-child{margin-bottom:0}.ls-prose .em{font-weight:700;color:var(--ink)}.ls-body .video-placeholder{margin:4px 0 0}.ls-section{margin:0 0 44px}.ls-section>h2{font-family:var(--display);font-weight:800;font-size:30px;line-height:1.14;letter-spacing:-.018em;color:var(--ink);margin:0 0 16px}.ls-section p{font-size:16.5px;line-height:1.62;color:var(--ink-2);margin:0 0 14px;text-wrap:pretty}.ls-section p:last-child{margin-bottom:0}.ls-section p .em{font-weight:700;color:var(--ink)}.ataglance{background:var(--surface);border:1px solid var(--border-strong);border-radius:var(--r-3);padding:22px 26px 24px;box-shadow:var(--shadow-2);margin:6px 0 32px}.ataglance__top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:4px}.ataglance__eyebrow{font-family:var(--display);font-weight:800;font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--ez)}.ataglance__time{display:inline-flex;align-items:center;gap:6px;font-family:var(--body);font-size:12.5px;font-weight:700;color:var(--muted);background:var(--surface-2);border:1px solid var(--border);border-radius:999px;padding:4px 11px 4px 10px;white-space:nowrap}.ataglance h2{font-family:var(--display);font-weight:800;font-size:19px;letter-spacing:-.01em;color:var(--ink);margin:8px 0 16px}.learn-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:12px}.learn-list li{display:flex;gap:13px;align-items:flex-start;font-size:15.5px;line-height:1.45;color:var(--ink-2)}.learn-list .cbox{flex:0 0 auto;width:18px;height:18px;border:1.7px solid var(--border-strong);border-radius:5px;margin-top:1px;background:var(--surface-2)}.pretest-hook{margin-top:20px;padding-top:16px;border-top:1px dashed var(--border-strong);display:flex;gap:14px}.pretest-hook__label{font-family:var(--display);font-weight:800;font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);flex:0 0 auto;padding-top:3px;white-space:nowrap}.pretest-hook p{margin:0;font-size:14.5px;line-height:1.5;color:var(--ink-3);font-style:italic}.ctable-wrap{margin:22px 0 4px}.ctable{width:100%;border-collapse:collapse;font-family:var(--body);font-size:15px;background:var(--surface);border:1px solid var(--border);border-radius:var(--r-2);overflow:hidden}.ctable th,.ctable td{text-align:left;vertical-align:top;padding:13px 16px;line-height:1.45}.ctable thead th{font-family:var(--display);font-weight:800;font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);background:var(--surface-2);border-bottom:1.5px solid var(--border-strong);white-space:nowrap}.ctable tbody tr+tr th,.ctable tbody tr+tr td{border-top:1px solid var(--border-soft)}.ctable th[scope=row]{font-family:var(--display);font-weight:700;font-size:15.5px;color:var(--ink);width:28%;background:var(--surface-2)}.ctable td{color:var(--ink-2)}.ctable td .em{font-weight:700;color:var(--ink)}@media(max-width:620px){.ctable{border:none;background:transparent}.ctable thead{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}.ctable,.ctable tbody,.ctable tr,.ctable th,.ctable td{display:block}.ctable tr{border:1px solid var(--border);border-radius:var(--r-2);margin-bottom:14px;background:var(--surface);overflow:hidden}.ctable th[scope=row]{width:auto;font-size:16px;padding:12px 15px;border-bottom:1px solid var(--border)}.ctable tbody tr+tr th,.ctable tbody tr+tr td{border-top:none}.ctable td{display:flex;gap:14px;justify-content:space-between;align-items:baseline;padding:11px 15px;border-bottom:1px solid var(--border-soft)}.ctable td:last-child{border-bottom:none}.ctable td:before{content:attr(data-label);font-family:var(--display);font-weight:700;font-size:12px;letter-spacing:.04em;text-transform:uppercase;color:var(--muted);flex:0 0 38%}}.callout{border-radius:var(--r-2);padding:15px 18px 16px;margin:24px 0}.callout__top{display:flex;align-items:center;gap:10px;margin-bottom:8px}.callout__label{font-family:var(--display);font-weight:800;font-size:11.5px;letter-spacing:.12em;text-transform:uppercase;display:inline-flex;align-items:center;gap:8px}.callout p{margin:0}.callout--rule{background:var(--ez-soft);border:1px solid var(--ez-edge)}.callout--rule .callout__label{color:var(--ez-dark)}.callout--rule p{font-family:var(--display);font-size:17.5px;font-weight:700;line-height:1.4;color:var(--ink);text-wrap:pretty}.callout--check{background:var(--surface);border:1.5px dashed var(--border-strong)}.callout--check .callout__label{color:var(--muted)}.callout--check p{font-size:15.5px;line-height:1.5;color:var(--ink-2)}.slot-tag{margin-left:auto;font-family:var(--body);font-weight:700;font-size:10px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);background:var(--surface-2);border:1px dashed var(--border-strong);border-radius:999px;padding:3px 9px;white-space:nowrap}.callout__dot{width:9px;height:9px;border-radius:999px;display:inline-block}.callout--rule .callout__dot{background:var(--ez)}.callout--check .callout__dot{background:transparent;border:1.6px solid var(--subtle)}.procedure{list-style:none;margin:24px 0;padding:0}.step{display:flex;gap:16px;padding:16px 0;border-bottom:1px solid var(--border-soft)}.step:first-child{padding-top:4px}.step:last-child{border-bottom:none;padding-bottom:4px}.step__num{flex:0 0 auto;width:30px;height:30px;border-radius:999px;background:var(--ink);color:var(--paper);font-family:var(--display);font-weight:800;font-size:14.5px;display:flex;align-items:center;justify-content:center}.step__title{font-family:var(--display);font-weight:700;font-size:16.5px;color:var(--ink);margin:4px 0 3px}.step__note{font-size:14.5px;line-height:1.5;color:var(--muted);text-wrap:pretty}.num-list{list-style:none;margin:20px 0;padding:0;display:flex;flex-direction:column;gap:16px}.num-list li{display:flex;gap:14px;align-items:flex-start}.num-list .ll-mark{flex:0 0 auto;width:26px;height:26px;border-radius:999px;border:1.7px solid var(--ez);color:var(--ez);font-family:var(--display);font-weight:800;font-size:13px;display:flex;align-items:center;justify-content:center;margin-top:1px}.num-list .ll-body{font-size:15.5px;line-height:1.55;color:var(--ink-2);text-wrap:pretty}.num-list .ll-term{font-family:var(--display);font-weight:800;color:var(--ink)}.panel-pair{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:22px 0 4px}@media(max-width:620px){.panel-pair{grid-template-columns:1fr}}.panel{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-2);padding:18px 20px 20px}.panel h4{font-family:var(--display);font-weight:800;font-size:14px;letter-spacing:.02em;margin:0 0 13px;display:flex;align-items:center;gap:9px}.panel--covers h4{color:var(--success)}.panel--fitter h4{color:var(--warn)}.panel ul{margin:0;padding:0;list-style:none;display:flex;flex-direction:column;gap:10px}.panel li{font-size:14.5px;line-height:1.45;color:var(--ink-2);padding-left:18px;position:relative;text-wrap:pretty}.panel li:before{content:"";position:absolute;left:0;top:7px;width:7px;height:7px;border-radius:2px;background:var(--border-strong)}.panel--covers li:before{background:var(--success)}.panel--fitter li:before{background:var(--warn)}.ls-cta{margin:40px 0 8px;padding:22px 24px;background:var(--ink);color:var(--paper);border-radius:var(--r-3);display:flex;flex-direction:column;gap:12px}.ls-cta__eyebrow{font-family:var(--display);font-weight:800;font-size:11.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--ez-edge)}.ls-cta p{margin:0;font-size:16.5px;line-height:1.55;color:#efe7da;text-wrap:pretty}.ls-cta p .strong{color:#fff;font-weight:700}.ls-cta__btn{align-self:flex-start;margin-top:4px;display:inline-flex;align-items:center;gap:9px;font-family:var(--display);font-weight:800;font-size:14px;color:var(--ink);background:#fff;border:none;border-radius:999px;padding:10px 18px;cursor:pointer;text-decoration:none;white-space:nowrap}.ls-cta__btn:hover{background:var(--paper-2)}.lesson-crumb{display:flex;align-items:center;gap:8px;margin-bottom:22px;font-family:var(--body);font-size:12px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;white-space:nowrap}.lesson-crumb a{color:var(--muted);text-decoration:none;border-bottom:1px solid transparent}.lesson-crumb a:hover{color:var(--ez-dark)}.lesson-crumb span[aria-hidden]{color:var(--subtle)}.lesson-crumb>span:last-child{color:var(--ink-2)}.section-counter{margin-left:auto;font-family:var(--body);font-size:12.5px;font-weight:700;color:var(--muted);letter-spacing:.06em;text-transform:uppercase;white-space:nowrap}.progress-strip{list-style:none;display:flex;gap:4px;margin:0 0 28px;padding:0}.progress-strip li{flex:1;display:flex}.progress-strip .seg{flex:1;height:6px;border-radius:999px;background:var(--border);transition:background .15s ease}.progress-strip .seg:hover{background:var(--border-strong)}.progress-strip .seg.is-visited{background:var(--ink)}.progress-strip .seg.is-current{background:var(--ez)}.section-h2{font-family:var(--display);font-weight:800;font-size:32px;line-height:1.15;letter-spacing:-.018em;color:var(--ink);margin:0 0 14px}.lesson-pager{margin-top:36px;display:flex;gap:12px;align-items:center;flex-wrap:wrap}.lesson-pager .btn{text-decoration:none}.main{min-width:0}.modules .module-row,.rail-row,.rail-header,.rail-meta-link,.rail-subrow{text-decoration:none}.rail-row .marker{width:16px;height:16px;flex:0 0 auto;border-radius:50%;border:2px solid var(--subtle);box-sizing:border-box;position:relative}.rail-row.is-current .marker{background:var(--ez);border-color:var(--ez)}.rail-row.is-progress .marker{background:var(--subtle);border-color:var(--subtle)}.rail-row.is-done .marker{background:var(--ink);border-color:var(--ink)}.rail-row.is-done .marker:after{content:"";position:absolute;left:4px;top:1px;width:4px;height:8px;border:solid var(--paper);border-width:0 2px 2px 0;transform:rotate(45deg)}.topbar{text-decoration:none;align-items:center;gap:10px}.topbar span{font-family:var(--display);font-weight:800;color:var(--ink);font-size:15px}.hero-badge{display:flex;justify-content:center}.tier-slots-label{font-family:var(--body);font-size:11px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--subtle);margin-right:4px}.signin-btn{margin-left:auto;padding:8px 16px;border-radius:var(--r-1);border:1px solid var(--border-strong);background:var(--surface);font-family:var(--body);font-weight:700;font-size:13.5px;color:var(--ink-2);cursor:pointer}.signin-btn:hover{border-color:var(--muted)}.signin-note{margin:-16px 2px 28px;font-size:13.5px;color:var(--muted);font-style:italic}.not-found{text-align:center;padding-top:72px}.not-found__badge{display:flex;justify-content:center;margin-bottom:24px}.not-found .lede{margin-left:auto;margin-right:auto}.not-found__ctas{justify-content:center}.deeper-rail{list-style:none;margin:0 0 28px;padding:0;display:grid;gap:6px}.deeper-rail li{display:flex;justify-content:space-between;align-items:baseline;gap:16px;padding:12px 16px;border:1px solid var(--border-soft);border-radius:var(--r-2);background:var(--surface)}.dr-title{font-weight:600;color:var(--ink-2)}.dr-src{font-size:12.5px;color:var(--muted);white-space:nowrap}.bff-island-placeholder{border:1px dashed var(--border-strong);border-radius:var(--r-2);background:var(--surface-2);padding:18px 20px;margin:24px 0}.bff-island-tag{display:inline-block;font-family:var(--body);font-size:11.5px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--ez-dark);margin-bottom:6px}.bff-island-placeholder p{margin:0;color:var(--muted);font-size:14px}.bff-island-err{color:var(--warn)!important}.bff-slider{margin:26px 0}.bff-slider__controls{margin-bottom:18px}.bff-slider__controls-label{display:block;font-family:var(--body);font-size:12.5px;font-weight:700;color:var(--muted);letter-spacing:.04em;margin-bottom:8px}.bff-slider__chips{display:flex;flex-wrap:wrap;gap:8px}.bff-slider__chip{padding:8px 14px;background:var(--surface);border:1px solid var(--border-strong);border-radius:999px;cursor:pointer;font-family:var(--body);font-size:13px;color:var(--ink-2);transition:all .15s}.bff-slider__chip:hover{border-color:var(--muted)}.bff-slider__chip.is-active{background:var(--ink);color:#fff;border-color:var(--ink)}.bff-slider__region{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-3);padding:28px 26px 18px}.bff-slider__rail{position:relative;touch-action:none;cursor:pointer}.bff-slider__track{position:relative;height:16px;border-radius:999px;overflow:hidden;display:flex;box-shadow:inset 0 1px 2px #1b181414}.bff-slider__zone{height:100%;transition:width .35s cubic-bezier(.4,0,.2,1)}.bff-slider__zone.is-far{background:#e3b0ac}.bff-slider__zone.is-near{background:#ecc79a}.bff-slider__zone.is-edge{background:#cfe0b3}.bff-slider__zone.is-center{background:#7fa05f}.bff-slider__marker{position:absolute;pointer-events:none;top:50%;width:28px;height:28px;margin-top:-14px;background:#fff;border:3px solid var(--ink);border-radius:50%;transform:translate(-50%);cursor:grab;box-shadow:0 2px 6px #1b181438;transition:box-shadow .15s}.bff-slider__marker:active{cursor:grabbing}.bff-slider__marker:focus{outline:none;box-shadow:0 0 0 4px var(--ez-edge),0 2px 6px #1b181438}.bff-slider__axis{display:flex;justify-content:space-between;align-items:center;margin-top:14px;font-family:var(--body);font-size:12.5px;color:var(--subtle)}.bff-slider__readout{font-weight:700;color:var(--ink-2)}.bff-slider__status{margin-top:18px;padding:14px 18px;border-radius:var(--r-2);font-size:15px;line-height:1.5}.bff-slider__status strong{display:block;margin-bottom:2px}.bff-slider__status.is-good{background:var(--success-soft);color:var(--success)}.bff-slider__status.is-warn{background:#fbeede;color:var(--warn)}.bff-slider__status.is-bad{background:var(--ez-soft);color:var(--ez-dark)}.bff-slider__caption{margin:16px 2px 0;font-size:14px;color:var(--muted);font-style:italic;line-height:1.5}.bff-slider__track--zones{height:52px;border-radius:var(--r-2);box-shadow:inset 0 1px 2px #1b181414}.bff-slider__zoneblock{position:relative;height:100%;display:flex;align-items:center;justify-content:center;background:var(--success-soft);border-right:1px solid #cfdfb8}.bff-slider__zoneblock:last-child{border-right:none}.bff-slider__zoneblock.is-current{background:#cfe0b3}.bff-slider__zoneblock.is-recommended{box-shadow:inset 0 0 0 2px var(--success)}.bff-slider__zone-label{font-family:var(--body);font-size:12.5px;font-weight:700;color:var(--ink-3);text-align:center;pointer-events:none;padding:0 4px}.bff-mcq{margin:26px 0;background:var(--surface);border:1px solid var(--border);border-radius:var(--r-3);padding:24px 24px 20px}.bff-mcq__prompt{font-family:var(--display);font-weight:800;font-size:18px;letter-spacing:-.01em;color:var(--ink);margin:0 0 16px}.bff-mcq__options{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}.bff-mcq__option{width:100%;text-align:left;display:flex;gap:12px;align-items:flex-start;padding:14px 16px;background:var(--surface-2);border:1px solid var(--border);border-radius:var(--r-2);cursor:pointer;font-family:var(--body);font-size:15px;line-height:1.45;color:var(--ink-2);transition:all .15s}.bff-mcq__option:hover{border-color:var(--border-strong)}.bff-mcq__option.is-correct{background:var(--success-soft);border-color:#cfdfb8;color:var(--success)}.bff-mcq__option.is-wrong{background:var(--ez-soft);border-color:var(--ez-edge);color:var(--ez-dark)}.bff-mcq__option.is-dim{opacity:.55}.bff-mcq__mark{flex:0 0 auto;width:18px;font-weight:800}.bff-mcq__feedback{margin:14px 2px 0;font-size:14.5px;line-height:1.5;padding:12px 14px;border-radius:var(--r-2)}.bff-mcq__feedback.is-correct{background:var(--success-soft);color:var(--success)}.bff-mcq__feedback.is-wrong{background:var(--surface-2);color:var(--ink-3)}.bff-mcq__explain{margin-top:16px;border-top:1px solid var(--border-soft);padding-top:12px}.bff-mcq__explain summary{cursor:pointer;color:var(--ez-dark);font-weight:700;font-size:14px;list-style:none}.bff-mcq__explain summary::-webkit-details-marker{display:none}.bff-mcq__explain summary:before{content:"▸ ";display:inline-block;transition:transform .2s}.bff-mcq__explain[open] summary:before{transform:rotate(90deg)}.bff-mcq__explain p{margin:12px 0 2px;font-size:14px;line-height:1.6;color:var(--ink-3)}.bff-reveal{display:flex;flex-direction:column;gap:12px;margin:26px 0}.bff-reveal__card{text-align:left;width:100%;display:flex;flex-direction:column;gap:8px;background:var(--surface);border:1px solid var(--border-strong);border-radius:var(--r-2);padding:16px 18px;cursor:pointer;font-family:var(--body);transition:all .15s}.bff-reveal__card:hover{box-shadow:var(--shadow-1)}.bff-reveal__card.is-open{background:var(--surface-2)}.bff-reveal__front{font-weight:700;color:var(--ink);font-size:15.5px;line-height:1.4}.bff-reveal__hint{font-size:12px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--ez-dark)}.bff-reveal__back{font-size:14.5px;line-height:1.55;color:var(--ink-2)}.bff-measure{margin:26px 0;background:var(--surface);border:1px solid var(--border);border-radius:var(--r-3);padding:22px 24px}.bff-measure__label{display:block;font-family:var(--display);font-weight:800;font-size:17px;color:var(--ink);margin-bottom:6px}.bff-measure__help{margin:0 0 14px;color:var(--ink-3);font-size:14.5px;line-height:1.5}.bff-measure__row{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.bff-measure__input{width:120px;padding:10px 12px;border:1px solid var(--border-strong);border-radius:var(--r-1);font-family:var(--body);font-size:16px;color:var(--ink);background:var(--surface)}.bff-measure__input:focus{outline:none;border-color:var(--ez);box-shadow:0 0 0 3px var(--ez-edge)}.bff-measure__unit{color:var(--muted);font-size:15px}.bff-measure__save{padding:10px 18px;background:var(--ink);color:#fff;border:none;border-radius:var(--r-1);font-family:var(--body);font-weight:700;font-size:14px;cursor:pointer}.bff-measure__save:disabled{opacity:.45;cursor:default}.bff-measure__framing{margin:14px 0 0;color:var(--muted);font-size:13.5px;font-style:italic}.bff-measure__export{margin-top:14px;padding:8px 14px;background:transparent;border:1px dashed var(--border-strong);border-radius:var(--r-1);color:var(--subtle);font-family:var(--body);font-size:13px;cursor:not-allowed}.bff-hotspot{margin:26px 0}.bff-hotspot__frame{position:relative;border-radius:var(--r-3);overflow:hidden;border:1px solid var(--border);background:var(--surface-2)}.bff-hotspot__img{display:block;width:100%;height:auto}.bff-hotspot__placeholder{aspect-ratio:16 / 10;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;color:var(--subtle);background:repeating-linear-gradient(45deg,var(--surface-2),var(--surface-2) 12px,var(--surface) 12px,var(--surface) 24px)}.bff-hotspot__placeholder span{font-weight:700;color:var(--muted)}.bff-hotspot__placeholder small{font-size:13px;max-width:60%;text-align:center}.bff-hotspot__pin{position:absolute;transform:translate(-50%,-50%);width:30px;height:30px;border-radius:50%;border:2px solid #fff;background:var(--ez);color:#fff;font-family:var(--body);font-weight:800;font-size:14px;cursor:pointer;box-shadow:0 2px 6px #1b18144d}.bff-hotspot__pin.is-active{background:var(--ink);transform:translate(-50%,-50%) scale(1.15)}.bff-hotspot__readout{margin-top:14px;padding:14px 16px;background:var(--surface-2);border:1px solid var(--border);border-radius:var(--r-2);font-size:14.5px;line-height:1.5;min-height:52px}.bff-hotspot__readout strong{display:block;margin-bottom:2px;color:var(--ink)}.bff-hotspot__hint{color:var(--muted);font-style:italic}
