:root{--color-accent: #217a50;--color-accent-hover: #0a5e34;--color-accent-deep: #0e3d28;--color-bg: #ffffff;--color-surface: #f7f7f6;--color-surface-2: #fafaf8;--color-border: #ececea;--color-border-strong: #d8d8d4;--color-text: #0e0e0d;--color-text-muted: #6b6b68;--color-text-subtle: #a0a09c;--font-sans: "IBM Plex Sans", system-ui, -apple-system, sans-serif;--font-serif: "IBM Plex Serif", Georgia, serif;--font-mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;--radius-pill: 999px;--radius-window: 12px;--lh-body: 1.6;--ls-display: -.018em;--ease-out: cubic-bezier(.16, 1, .3, 1);--sp-speaker-1: #5a3aa6;--sp-speaker-2: #1f7a4f;--sp-speaker-3: #b03a3a;--sp-speaker-4: #1a4f8a;--sp-inset: 32px;--sp-orb: 56px}::selection{background:#217a5038;color:inherit}*{box-sizing:border-box}body{margin:0}.sp-spin{animation:sp-spin .9s linear infinite}@keyframes sp-spin{to{transform:rotate(360deg)}}.sp-page{position:relative;min-height:100vh;min-height:100dvh;overflow-x:clip;background:var(--color-bg);color:var(--color-text);font-family:var(--font-sans);font-size:16px;-webkit-font-smoothing:antialiased}.sp-page--center{display:flex;align-items:center;justify-content:center;padding:24px}.sp-atmos{position:fixed;top:0;right:0;bottom:0;left:0;pointer-events:none;z-index:0;overflow:clip}.sp-blob{position:absolute;border-radius:58% 42% 55% 45%/55% 50% 50% 45%;background:#217a500f;display:none}.sp-blob--tr{top:-60px;right:-140px;width:620px;height:540px}.sp-blob--bl{bottom:-80px;left:-160px;width:560px;height:500px;border-radius:52% 48% 48% 52%/48% 56% 44% 52%}.sp-dots{position:absolute;top:0;right:0;bottom:0;left:0;background-image:radial-gradient(circle,var(--color-border) 1px,transparent 1px);background-size:24px 24px;-webkit-mask-image:linear-gradient(to bottom,transparent 0,rgba(0,0,0,.55) 14%,rgba(0,0,0,.55) 86%,transparent 100%);mask-image:linear-gradient(to bottom,transparent 0,rgba(0,0,0,.55) 14%,rgba(0,0,0,.55) 86%,transparent 100%)}.sp-brand{position:fixed;top:var(--sp-inset);left:var(--sp-inset);z-index:20;display:inline-flex;text-decoration:none;transition:transform .15s var(--ease-out)}.sp-brand img{display:block}.sp-brand:hover{transform:scale(1.06)}.sp-brand:active{transform:scale(.96)}.sp-tools{position:fixed;top:var(--sp-inset);right:var(--sp-inset);z-index:20;display:flex;align-items:center;gap:12px}.sp-corner-btn{width:var(--sp-orb);height:var(--sp-orb);flex-shrink:0;display:inline-flex;align-items:center;justify-content:center;padding:0;border:1px solid var(--color-border-strong);border-radius:var(--radius-pill);background:var(--color-bg);color:var(--color-text);cursor:pointer;transition:border-color .15s var(--ease-out),background-color .15s var(--ease-out),transform .15s var(--ease-out)}.sp-corner-btn:hover{border-color:var(--color-text);background:var(--color-surface);transform:scale(1.06)}.sp-corner-btn:active{transform:scale(.96)}.sp-corner-btn:focus-visible{outline:2px solid var(--color-accent);outline-offset:3px}.sp-search{position:relative;display:flex;align-items:center;height:var(--sp-orb);width:var(--sp-orb);transition:width .32s var(--ease-out)}.sp-search.is-open{width:320px}.sp-search-btn{position:relative;z-index:2}.sp-search.is-open .sp-search-btn{border-color:transparent;background:transparent}.sp-search.is-open .sp-search-btn:hover{background:transparent;transform:none;color:var(--color-accent)}.sp-search-input{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;padding:0 52px 0 var(--sp-orb);border:1px solid var(--color-border-strong);border-radius:var(--radius-pill);background:var(--color-bg);font-family:var(--font-sans);font-size:15px;color:var(--color-text);outline:none;opacity:0;pointer-events:none;transition:opacity .2s var(--ease-out)}.sp-search-input::-webkit-search-cancel-button{-webkit-appearance:none}.sp-search.is-open .sp-search-input{opacity:1;pointer-events:auto}.sp-search-input:focus{border-color:var(--color-text)}.sp-search-count{position:absolute;right:18px;z-index:2;font-family:var(--font-mono);font-size:12px;color:var(--color-text-subtle);pointer-events:none}.sp-sheet-wrap{position:relative;z-index:1;padding:96px 24px 140px}.sp-sheet{max-width:816px;margin:0 auto;padding:64px 72px 72px;background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius-window);box-shadow:0 4px 14px #0000000d,0 18px 40px #00000012;animation:sp-sheet-in .7s var(--ease-out) both}@keyframes sp-sheet-in{0%{opacity:0;transform:translateY(16px) scale(.995)}to{opacity:1;transform:translateY(0) scale(1)}}.sp-doc-head{padding-bottom:28px;margin-bottom:32px;border-bottom:1px solid var(--color-border)}.sp-doc-title{margin:0;font-family:var(--font-serif);font-weight:500;font-size:34px;line-height:1.15;letter-spacing:var(--ls-display);color:var(--color-text);overflow-wrap:anywhere}.sp-doc-meta{display:flex;align-items:center;flex-wrap:wrap;gap:8px;margin:12px 0 0;font-size:14px;color:var(--color-text-muted)}.sp-doc-meta i{width:3px;height:3px;border-radius:50%;background:var(--color-border-strong)}.sp-doc-by{color:var(--color-accent);font-weight:500}.sp-doc-head--tabbed{padding-bottom:18px;margin-bottom:0;border-bottom:0}.sp-tabs{display:flex;align-items:center;gap:24px;margin:0 0 28px;border-bottom:1px solid var(--color-border)}.sp-tab{-webkit-appearance:none;-moz-appearance:none;appearance:none;background:none;border:0;font-family:inherit;font-size:14px;color:var(--color-text-muted);padding:4px 0 12px;cursor:pointer;border-bottom:2px solid transparent;margin-bottom:-1px;transition:color .12s var(--ease-out)}.sp-tab:hover{color:var(--color-text)}.sp-tab.is-active{color:var(--color-text);border-bottom-color:var(--color-text)}.sp-tab:focus-visible{outline:2px solid var(--color-accent);outline-offset:3px;border-radius:3px}.sp-summary{animation:sp-turn-in .46s var(--ease-out) both}.sp-sum-h{margin:26px 0 10px;font-family:var(--font-serif);font-weight:500;font-size:20px;line-height:1.25;letter-spacing:var(--ls-display);color:var(--color-text)}.sp-sum-h:first-child{margin-top:2px}.sp-sum-list{margin:0;padding:0;list-style:none}.sp-sum-li{position:relative;padding:4px 0 4px 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var(--color-accent);outline-offset:2px}.sp-chapter-time{flex-shrink:0;font-family:var(--font-mono);font-size:12px;color:var(--color-accent);min-width:46px}.sp-chapter-title{font-size:16px;line-height:1.5;color:var(--color-text);overflow-wrap:anywhere}.sp-turns{display:flex;flex-direction:column}.sp-turn{display:flex;gap:14px;padding:10px 12px;margin:0 -12px;border-radius:8px;transition:background-color .22s var(--ease-out);animation:sp-turn-in .46s var(--ease-out) both}@keyframes sp-turn-in{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}.sp-mark{background:#ffd60073;color:inherit;border-radius:3px;padding:0 1px}.sp-line{cursor:pointer;border-radius:4px;padding:0 2px;margin:0 -2px;transition:background-color .12s var(--ease-out);box-decoration-break:clone;-webkit-box-decoration-break:clone}.sp-line:hover{background:var(--color-surface)}.sp-line.is-active{background:#217a501f}.sp-line.is-hit{background:#ffd60029}.sp-line:focus-visible{outline:2px solid 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28px));width:var(--sp-orb);height:var(--sp-orb);display:inline-flex;align-items:center;justify-content:center;padding:0;border:0;border-radius:var(--radius-pill);background:var(--color-accent);color:#fff;cursor:pointer;transition:background-color .15s var(--ease-out),transform .15s var(--ease-out);animation:sp-dock-in .62s var(--ease-out) .2s both}.sp-play-orb svg{width:17px;height:17px}.sp-play-orb:hover{background:var(--color-accent-hover);transform:scale(1.06)}.sp-play-orb:active{transform:scale(.96)}.sp-play-orb:focus-visible{outline:2px solid var(--color-accent);outline-offset:3px}.sp-dock{position:fixed;z-index:25;left:calc(var(--sp-inset) + var(--sp-orb) + 12px);right:calc(var(--sp-inset) + var(--sp-orb) + 12px);bottom:max(var(--sp-inset),calc(env(safe-area-inset-bottom,0px) + 28px));height:var(--sp-orb);display:flex;align-items:center;gap:16px;padding:0 20px;cursor:pointer;background:#ffffffdb;border:1px solid var(--color-border-strong);border-radius:var(--radius-pill);backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);box-shadow:0 6px 22px #00000014;animation:sp-dock-in .62s var(--ease-out) .24s both}@keyframes sp-dock-in{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}.sp-dock-time{flex-shrink:0;font-family:var(--font-mono);font-size:11.5px;color:var(--color-text-muted);font-variant-numeric:tabular-nums}.sp-dock-time--end{color:var(--color-text-subtle)}.sp-dock-track{position:relative;flex:1;min-width:0;height:26px;display:flex;align-items:center;gap:1px;cursor:pointer}.sp-tick{flex:1;height:16px;min-width:0;border-radius:1px;opacity:.9;transform-origin:center;animation:sp-tick-in .34s var(--ease-out) backwards;transition:transform .15s var(--ease-out)}.sp-tick.is-quiet{height:3px;background:var(--color-border);opacity:1}@keyframes sp-tick-in{0%{transform:scaleY(.2);opacity:0}to{transform:scaleY(1);opacity:.9}}.sp-dock-played{position:absolute;inset:0 auto 0 0;background:#0e0e0d0f;border-radius:3px;pointer-events:none;transition:width .12s linear}.sp-dock-head{position:absolute;top:2px;bottom:2px;width:2px;margin-left:-1px;background:var(--color-text);border-radius:1px;box-shadow:0 0 0 2px #ffffffe6;pointer-events:none;transition:left .12s linear,background-color .2s var(--ease-out),opacity .2s var(--ease-out)}.sp-dock-head.is-reading{background:var(--color-text-subtle);opacity:.8;transition:left .26s var(--ease-out),background-color .2s var(--ease-out),opacity .2s var(--ease-out)}.sp-dock-tip{position:absolute;bottom:calc(100% + 14px);transform:translate(-50%);display:flex;align-items:center;gap:6px;padding:5px 9px;background:var(--color-text);color:#fff;border-radius:6px;font-family:var(--font-mono);font-size:11px;white-space:nowrap;pointer-events:none}.sp-dock-tip b{font-family:var(--font-sans);font-weight:500}.sp-orb{position:fixed;z-index:25;width:var(--sp-orb);height:var(--sp-orb);right:var(--sp-inset);bottom:max(var(--sp-inset),calc(env(safe-area-inset-bottom,0px) + 28px));display:inline-flex;align-items:center;justify-content:center;padding:0;border:0;border-radius:var(--radius-pill);background:var(--color-accent);color:#fff;cursor:pointer;transition:background-color .15s var(--ease-out),transform .15s var(--ease-out);animation:sp-dock-in .62s var(--ease-out) .32s both}.sp-orb:hover{background:var(--color-accent-hover);transform:scale(1.06)}.sp-orb:active{transform:scale(.96)}.sp-orb:focus-visible{outline:2px solid var(--color-accent);outline-offset:3px}.sp-cta{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--radius-pill);font-family:var(--font-sans);font-weight:500;text-decoration:none;cursor:pointer;white-space:nowrap;transition:background-color .15s var(--ease-out),border-color .15s var(--ease-out),color .15s var(--ease-out),transform .15s var(--ease-out)}.sp-cta:active{transform:scale(.98)}.sp-cta--primary{height:56px;padding:0 36px;min-width:260px;font-size:17px;background-color:var(--color-accent);border:1px solid var(--color-accent);color:var(--color-bg)}.sp-cta--primary:hover{background-color:var(--color-accent-hover);border-color:var(--color-accent-hover);transform:translateY(-1px)}.sp-cta--ghost{height:56px;padding:0 36px;min-width:220px;font-size:17px;background-color:var(--color-bg);border:1px solid var(--color-border);color:var(--color-text)}.sp-cta--ghost:hover{border-color:var(--color-text);background-color:var(--color-surface)}.sp-gate{position:fixed;top:0;right:0;bottom:0;left:0;z-index:50;display:flex;align-items:center;justify-content:center;padding:24px;perspective:900px;background:#0e0e0d52;backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);animation:sp-fade-in .24s var(--ease-out)}.sp-gate.is-leaving{animation:sp-fade-out .2s var(--ease-out) forwards}.sp-gate-card{position:relative;width:100%;max-width:480px;padding:40px 40px 28px;background:var(--color-bg);border:1px solid var(--color-border);border-radius:16px;box-shadow:0 8px 22px #00000014,0 30px 60px #0000001f;text-align:center;overflow:hidden;--tilt-x: 0deg;--tilt-y: 0deg;--tilt-shine-x: 50%;--tilt-shine-y: 50%;transform-style:preserve-3d;transform:rotateX(var(--tilt-x)) rotateY(var(--tilt-y));transform-origin:center 70%;animation:sp-card-in .42s var(--ease-out);will-change:transform;backface-visibility:hidden;-webkit-backface-visibility:hidden}.sp-gate-card.tilt-snap-back{transition:transform .24s cubic-bezier(.2,.8,.2,1)}.sp-gate-card.is-leaving{animation:sp-card-out .2s var(--ease-out) forwards}.sp-gate-sheen{pointer-events:none;position:absolute;top:0;right:0;bottom:0;left:0;z-index:2;background:radial-gradient(320px circle at var(--tilt-shine-x) var(--tilt-shine-y),rgba(255,255,255,.22),transparent 65%)}.sp-gate-card>:not(.sp-gate-sheen){position:relative;z-index:1}.sp-gate-mark{display:block;margin:0 auto 20px}.sp-gate-title{margin:0;font-family:var(--font-serif);font-weight:500;font-size:26px;line-height:1.25;letter-spacing:-.01em;text-wrap:balance}.sp-gate-title span{color:var(--color-accent)}.sp-gate-body{margin:6px 0 24px;font-size:16px;line-height:var(--lh-body);color:var(--color-text-muted)}.sp-gate-cta{width:100%;min-width:0}.sp-gate-skip{margin-top:10px;width:100%;min-width:0}@keyframes sp-fade-in{0%{opacity:0}to{opacity:1}}@keyframes sp-fade-out{0%{opacity:1}to{opacity:0}}@keyframes sp-card-in{0%{opacity:0;transform:perspective(900px) rotateX(10deg) scale(.9)}to{opacity:1;transform:perspective(900px) rotateX(0) scale(1)}}@keyframes sp-card-out{0%{opacity:1;transform:perspective(900px) rotateX(0) scale(1)}to{opacity:0;transform:perspective(900px) rotateX(6deg) scale(.96)}}.sp-pick-card{max-width:420px;padding:36px 28px 24px}.sp-picks{display:flex;flex-direction:column;gap:8px;margin-bottom:20px}.sp-pick{display:flex;align-items:center;padding:14px 18px;border:1px solid var(--color-border);border-radius:var(--radius-window);background:var(--color-bg);text-align:left;cursor:pointer;transition:border-color .15s var(--ease-out),background-color .15s var(--ease-out),transform .15s var(--ease-out)}.sp-pick:hover:not(:disabled){border-color:var(--color-text);background:var(--color-surface);transform:translateY(-1px)}.sp-pick:active:not(:disabled){transform:scale(.99)}.sp-pick:disabled{opacity:.45;cursor:default}.sp-pick-text{display:flex;flex-direction:column;gap:2px;min-width:0}.sp-pick-text b{font-size:15px;font-weight:500;color:var(--color-text)}.sp-pick-text i{font-style:normal;font-size:13px;color:var(--color-text-muted)}.sp-notice{position:relative;z-index:1;max-width:460px;padding:40px;background:var(--color-bg);border:1px solid var(--color-border);border-radius:16px;box-shadow:0 4px 14px #0000000d,0 18px 40px #00000012;text-align:center}.sp-notice-title{margin:0;font-family:var(--font-serif);font-weight:500;font-size:30px;line-height:1.15}.sp-notice-body{margin:12px 0 28px;font-size:16px;line-height:var(--lh-body);color:var(--color-text-muted)}@media (max-width: 767px){:root{--sp-inset: 16px;--sp-orb: 48px}.sp-brand{top:16px;left:16px}.sp-brand img{width:48px;height:48px}.sp-tools{top:16px;right:16px;gap:8px}.sp-tabs{gap:20px}.sp-search.is-open{width:calc(100vw - 88px)}.sp-sheet-wrap{padding:72px 12px 120px}.sp-sheet{padding:32px 24px 40px;border-radius:10px}.sp-doc-title{font-size:25px}.sp-doc-meta{font-size:13px}.sp-turn{gap:10px;padding:8px;margin:0 -8px}.sp-turn-text{font-size:15.5px}.sp-dock{left:calc(var(--sp-inset) + var(--sp-orb) + 8px);right:calc(var(--sp-inset) + var(--sp-orb) + 8px);gap:10px;padding:0 12px}.sp-dock-time--end{display:none}.sp-cta--primary,.sp-cta--ghost{min-width:0;width:100%;padding:0 24px}.sp-gate-card{padding:32px 24px 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