:root{--paper: #fbf8f2;--paper-2: #f3eee4;--paper-3: #ece5d7;--surface: #ffffff;--ink: #0c2a2e;--ink-2: #143c3e;--teal: #0f766e;--teal-soft: #e4efec;--accent: #a85e12;--accent-hover: #8f4f0e;--accent-soft: #f7e7d3;--on-accent: #fffaf3;--text: #16211f;--text-muted: #586661;--border: #e3ddd1;--border-strong: #cfc6b4;--success: #1a7f5a;--radius-sm: 8px;--radius: 14px;--radius-lg: 22px;--shadow-sm: 0 1px 2px rgba(12, 42, 46, .06), 0 2px 8px rgba(12, 42, 46, .04);--shadow: 0 4px 16px rgba(12, 42, 46, .07), 0 12px 40px rgba(12, 42, 46, .06);--shadow-lg: 0 18px 60px rgba(12, 42, 46, .16);--font-display: "Crimson Pro", Georgia, "Times New Roman", serif;--font-body: "Atkinson Hyperlegible", "Helvetica Neue", Arial, sans-serif;--max: 1180px;--nav-h: 72px;--ease: cubic-bezier(.16, 1, .3, 1);--ink-solid: #0c2a2e;--on-ink: #fbf8f2;--on-ink-muted: rgba(251, 248, 242, .76);color-scheme:light}[data-theme=dark]{--paper: #08171a;--paper-2: #0b2024;--paper-3: #0f2a2e;--surface: #0e2529;--ink: #eef3f0;--ink-2: #d7e6e0;--teal: #4ecdc0;--teal-soft: #123437;--accent: #e0a558;--accent-hover: #eeb972;--accent-soft: #2a2114;--on-accent: #17201d;--text: #eaf0ec;--text-muted: #a3b6b0;--border: rgba(255, 255, 255, .11);--border-strong: rgba(255, 255, 255, .2);--shadow-sm: 0 1px 2px rgba(0, 0, 0, .4);--shadow: 0 6px 24px rgba(0, 0, 0, .45);--shadow-lg: 0 20px 60px rgba(0, 0, 0, .55);--ink-solid: #0f3236;--on-ink: #f4f7f3;--on-ink-muted: rgba(244, 247, 243, .78);color-scheme:dark}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}body{background:var(--paper);color:var(--text);font-family:var(--font-body);font-size:1.0625rem;line-height:1.65;-webkit-font-smoothing:antialiased;transition:background .3s ease,color .3s ease}img{max-width:100%;display:block}::selection{background:var(--accent-soft);color:var(--ink)}:focus-visible{outline:3px solid 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.lead{color:var(--on-ink-muted)}.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:clamp(32px,5vw,56px)}.rule{height:1px;background:var(--border);border:0}.btn{--btn-bg: var(--accent);--btn-fg: var(--on-accent);display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:48px;padding:0 24px;border:1px solid transparent;border-radius:999px;font-family:var(--font-body);font-size:.95rem;font-weight:700;letter-spacing:.01em;cursor:pointer;text-decoration:none;background:var(--btn-bg);color:var(--btn-fg);transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s ease,color .2s ease,border-color .2s ease}.btn:hover{transform:translateY(-2px);box-shadow:var(--shadow);background:var(--accent-hover)}.btn:active{transform:translateY(0) 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strong{display:block;font-family:var(--font-display);font-size:clamp(2.2rem,4.4vw,3.1rem);line-height:1;color:var(--accent);letter-spacing:-.02em}.stat p{margin-top:10px;font-size:.98rem}.stat small{display:block;margin-top:12px;font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;color:var(--text-muted)}.problems{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(28px,5vw,64px);align-items:start}.problem-list{list-style:none;display:grid;gap:2px}.problem-list li{display:grid;grid-template-columns:26px 1fr;gap:14px;padding:18px 0;border-bottom:1px solid var(--border);font-size:1.02rem;align-items:start}.problem-list li:first-child{border-top:1px solid var(--border)}.problem-list svg{color:var(--accent);margin-top:3px}.feature-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(272px,1fr));gap:18px}.feature{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:28px 26px 30px;box-shadow:var(--shadow-sm);transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s ease;position:relative;overflow:hidden}.feature:after{content:"";position:absolute;inset:0 0 auto 0;height:3px;background:linear-gradient(90deg,var(--accent),var(--teal));opacity:0;transition:opacity .25s ease}.feature:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--border-strong)}.feature:hover:after{opacity:1}.feature__icon{width:46px;height:46px;border-radius:12px;display:grid;place-items:center;background:var(--teal-soft);color:var(--teal);margin-bottom:20px}.feature h3{font-family:var(--font-display);font-size:1.25rem;margin-bottom:10px;font-weight:600}.feature p{font-size:.94rem;color:var(--text-muted);line-height:1.6}.levers{display:grid;grid-template-columns:minmax(0,.86fr) minmax(0,1.14fr);gap:clamp(24px,4vw,56px);align-items:start}.lever-list{list-style:none;display:grid;gap:6px}.lever-btn{width:100%;display:grid;grid-template-columns:40px 1fr auto;align-items:center;gap:14px;text-align:left;padding:16px 18px;border-radius:12px;border:1px solid transparent;background:transparent;color:inherit;cursor:pointer;font-family:var(--font-body);transition:background .2s ease,border-color .2s ease,transform .2s var(--ease)}.lever-btn:hover{background:#ffffff0d}.lever-btn[aria-selected=true]{background:#ffffff14;border-color:#e0a55873}.lever-btn__num{width:40px;height:40px;border-radius:10px;display:grid;place-items:center;border:1px solid rgba(255,255,255,.18);font-family:var(--font-display);font-size:.95rem;color:#fbf8f2cc;flex:none}.lever-btn[aria-selected=true] .lever-btn__num{background:var(--accent);border-color:var(--accent);color:#17201d;font-weight:700}.lever-btn__label{display:block}.lever-btn__title{font-family:var(--font-display);font-size:1.16rem;color:var(--on-ink);line-height:1.2}.lever-btn__summary{font-size:.82rem;color:#fbf8f299}.lever-btn svg{color:#fbf8f259}.lever-panel{background:#ffffff0d;border:1px solid rgba(255,255,255,.12);border-radius:var(--radius-lg);padding:clamp(24px,3.4vw,40px);min-height:320px;animation:fadeUp .35s var(--ease) both}.lever-panel__step{font-size:.7rem;letter-spacing:.2em;text-transform:uppercase;color:var(--accent);font-weight:700}.lever-panel h3{font-family:var(--font-display);font-size:clamp(1.6rem,2.6vw,2.1rem);color:var(--on-ink);margin:12px 0 14px;font-weight:600}.lever-panel p{color:#fbf8f2c2;font-size:1rem;max-width:46ch}.lever-panel__aside{margin-top:24px;padding-top:20px;border-top:1px solid rgba(255,255,255,.14);display:flex;align-items:center;gap:10px;font-size:.84rem;color:#fbf8f29e}.band{position:relative;min-height:380px;display:grid;place-items:center;text-align:center;padding:clamp(56px,8vw,96px) 24px;background-size:cover;background-position:center;isolation:isolate}.band:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:linear-gradient(180deg,#08201fd1,#08201fb3);z-index:-1}.band blockquote{font-family:var(--font-display);font-size:clamp(1.5rem,3.4vw,2.5rem);line-height:1.24;color:#fbf7ec;max-width:24ch;font-weight:500;text-wrap:balance}.band cite{display:block;margin-top:22px;font-family:var(--font-body);font-style:normal;font-size:.72rem;letter-spacing:.18em;text-transform:uppercase;color:#d9b47c}.accordion{border-top:1px solid var(--border)}.acc-item{border-bottom:1px solid var(--border)}.acc-trigger{width:100%;display:grid;grid-template-columns:86px 1fr auto;gap:18px;align-items:center;padding:24px 4px;background:none;border:0;cursor:pointer;text-align:left;font-family:var(--font-body);color:inherit;transition:color .2s ease}.acc-trigger:hover .acc-title{color:var(--accent)}.acc-part{font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;color:var(--accent);font-weight:700}.acc-title{font-family:var(--font-display);font-size:clamp(1.15rem,2.2vw,1.5rem);transition:color .2s ease;line-height:1.2}.acc-chevron{width:36px;height:36px;border-radius:50%;border:1px solid var(--border-strong);display:grid;place-items:center;color:var(--ink);transition:transform .3s var(--ease),background .2s ease;flex:none}.acc-trigger[aria-expanded=true] .acc-chevron{transform:rotate(180deg);background:var(--accent-soft);border-color:var(--accent);color:var(--accent)}.acc-body{display:grid;grid-template-rows:0fr;transition:grid-template-rows .35s var(--ease)}.acc-body[data-open=true]{grid-template-rows:1fr}.acc-body>div{overflow:hidden}.acc-inner{padding:0 4px 28px 104px;display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);gap:28px}.acc-inner p{color:var(--text-muted);font-size:.96rem;max-width:40ch}.acc-chapters{list-style:none;display:grid;gap:10px}.acc-chapters li{display:grid;grid-template-columns:22px 1fr;gap:12px;font-size:.94rem;align-items:baseline}.acc-chapters span{font-family:var(--font-display);color:var(--accent);font-size:.9rem;font-weight:700}.tabs{display:flex;flex-wrap:wrap;gap:6px;padding:6px;background:var(--paper-3);border-radius:999px;border:1px solid var(--border);width:fit-content;max-width:100%}.tab{display:inline-flex;align-items:center;gap:8px;padding:11px 18px;border-radius:999px;border:0;background:transparent;color:var(--text-muted);font-family:var(--font-body);font-size:.9rem;font-weight:700;cursor:pointer;white-space:nowrap;transition:background .2s ease,color .2s ease,box-shadow .2s ease}.tab:hover{color:var(--ink)}.tab[aria-selected=true]{background:var(--surface);color:var(--ink);box-shadow:var(--shadow-sm)}.tab-panel{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:clamp(24px,4vw,56px);align-items:center;margin-top:36px;animation:fadeUp .35s var(--ease) both}.tab-panel h3{font-family:var(--font-display);font-size:clamp(1.5rem,2.8vw,2rem);margin-bottom:14px}.tab-panel p{color:var(--text-muted);max-width:48ch}.check-list{list-style:none;display:grid;gap:12px;margin-top:24px}.check-list li{display:grid;grid-template-columns:22px 1fr;gap:12px;font-size:.96rem;align-items:start}.check-list svg{color:var(--teal);margin-top:3px}.author{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:clamp(28px,5vw,64px);align-items:center}.author__figure{position:relative;border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--border);box-shadow:var(--shadow);background:var(--paper-3)}.author__figure 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