.movement-page .physics-chapters{grid-template-columns:repeat(4,minmax(0,1fr))}
.swing-timeline{--swing-ink:#244638;--swing-gold:#916c36;--swing-line:#d8dfd1;color:var(--swing-ink);min-width:0}
.swing-timeline-intro{display:flex;align-items:flex-start;justify-content:space-between;gap:24px;margin:30px 0 24px}
.swing-timeline-intro h2{font-family:Georgia,serif;font-weight:400;font-size:clamp(1.9rem,3vw,2.7rem);line-height:1.12;margin:8px 0 12px;letter-spacing:-.025em}
.swing-timeline-intro p{margin:0;max-width:60ch;color:#576958;line-height:1.6}
.swing-timeline-count{font-size:.8rem;padding:9px 12px;border:1px solid var(--swing-line);border-radius:30px;white-space:nowrap;margin-top:10px}
.swing-position-nav ol{list-style:none;display:grid;grid-template-columns:repeat(10,minmax(0,1fr));gap:0;margin:0;padding:0}
.swing-position-nav li{position:relative;min-width:0}
.swing-position-nav li:before{content:'';position:absolute;left:0;right:0;top:26px;border-top:2px solid #cbd4c4}
.swing-position-nav li:first-child:before{left:50%}.swing-position-nav li:last-child:before{right:50%}
.swing-position-nav button{position:relative;display:flex;flex-direction:column;align-items:center;gap:10px;width:100%;border:0;background:transparent;color:#516451;padding:4px 4px 12px;cursor:pointer;font:inherit;text-align:center;min-height:101px}
.swing-position-nav b{display:grid;place-items:center;width:46px;height:46px;border:1px solid #b7c4b2;border-radius:50%;background:#fffef9;font-size:.95rem;transition:background .15s,color .15s}
.swing-position-nav span{font-size:.75rem;line-height:1.35;max-width:12ch}
.swing-position-nav button[aria-pressed=true]{color:#244638;font-weight:750}
.swing-position-nav button[aria-pressed=true] b{background:#244638;color:#fffef9;border-color:#244638;box-shadow:0 0 0 4px #dce5d5}
.swing-position-nav button:hover b{border-color:#916c36}
.swing-timeline button:focus-visible,.swing-timeline summary:focus-visible{outline:3px solid #a37a3e;outline-offset:3px}
.swing-timeline-scale{font-size:.8125rem;line-height:1.5;color:#62705d;margin:5px 0 24px}
.swing-position-panel{background:#fffef9;border:1px solid var(--swing-line);border-radius:20px;overflow:hidden;box-shadow:0 9px 30px #233a2910}
.swing-position-header{display:flex;align-items:center;gap:26px;padding:30px 34px 24px}
.swing-position-number{font-family:Georgia,serif;font-size:clamp(3.4rem,6vw,5.4rem);font-weight:400;line-height:1;color:#94743d;flex-shrink:0;min-width:1.8ch;letter-spacing:-.055em}
.swing-position-header h3{font-size:clamp(1.35rem,2vw,1.8rem);line-height:1.25;margin:8px 0 10px;letter-spacing:-.025em;color:#244638}
.swing-position-header p{margin:0;line-height:1.6;color:#52664f;max-width:78ch;font-size:.9375rem}
.swing-position-focus{margin:0;padding:17px 34px;background:#edf1e6;border-block:1px solid #dfe5d7;font-weight:650;font-size:1rem;line-height:1.5}
.swing-physics-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0;padding:12px 34px}
.swing-physics-grid>section{position:relative;padding:24px 26px 22px 0;min-width:0}
.swing-physics-grid>section:nth-child(even){padding-left:28px;padding-right:0;border-left:1px solid #e4e8dd}
.swing-physics-grid>section:nth-child(n+3){border-top:1px solid #e4e8dd}
.swing-physics-grid>section>span{font-size:.7rem;font-weight:700;letter-spacing:.09em;color:#94743d}
.swing-physics-grid h4{margin:6px 0 12px;font-size:1.075rem;color:#244638;line-height:1.3}
.swing-physics-grid p{margin:0;color:#4e604f;font-size:.9375rem;line-height:1.75;max-width:67ch}
.swing-position-observe,.swing-position-topics{margin:0 34px;border-top:1px solid var(--swing-line)}
.swing-position-observe>summary,.swing-position-topics>summary,.swing-timeline-reading>summary{cursor:pointer;padding:20px 0;font-size:.9375rem;font-weight:700;line-height:1.5}
.swing-position-observe>summary>span{font-size:.8125rem;color:#69715e;font-weight:400;margin-left:12px}
.swing-observe-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;padding-bottom:16px}
.swing-observe-grid h4{font-size:.875rem;margin:0 0 9px;color:#816237}.swing-observe-grid p{font-size:.875rem;line-height:1.7;margin:0;color:#4e604f}
.swing-evidence{font-size:.75rem;line-height:1.6;color:#6a735f;margin:0 0 22px;overflow-wrap:anywhere}
.swing-position-topics>div{display:flex;flex-wrap:wrap;gap:9px;padding-bottom:22px}
.swing-position-topics button{display:flex;align-items:center;gap:14px;padding:11px 14px;border:1px solid #c4cfbb;background:#f6f7f0;border-radius:8px;color:#294b3f;font:inherit;font-size:.875rem;cursor:pointer}
.swing-position-footer{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:18px 34px;background:#f6f7f0;border-top:1px solid var(--swing-line)}
.swing-position-footer button{padding:12px 18px;border:1px solid #bccab4;border-radius:8px;background:#fffef9;color:#244638;font:inherit;font-size:.875rem;cursor:pointer;min-height:44px}
.swing-position-footer button:disabled{opacity:.4;cursor:default}.swing-position-footer>span{font-size:.8125rem;color:#63705c;text-align:center}
.swing-timeline-reading{border:1px solid var(--swing-line);border-radius:12px;padding:0 24px;margin:20px 0}
.swing-timeline-reading>div{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px 28px;padding-bottom:22px}
.swing-timeline-reading p{font-size:.875rem;line-height:1.75;color:#52644f;margin:0}
@media(max-width:1250px){.movement-page .physics-chapters{grid-template-columns:repeat(2,minmax(0,1fr))}.swing-position-nav ol{grid-template-columns:repeat(5,minmax(0,1fr));row-gap:16px}.swing-position-nav li:nth-child(5):before{right:50%}.swing-position-nav li:nth-child(6):before{left:50%}.swing-observe-grid{grid-template-columns:1fr}.swing-timeline-count{display:none}}
@media(max-width:700px){.swing-timeline-intro{margin-top:20px}.swing-position-header{padding:24px 20px;gap:18px}.swing-position-focus{padding:15px 20px}.swing-physics-grid{grid-template-columns:1fr;padding:0 20px}.swing-physics-grid>section,.swing-physics-grid>section:nth-child(even){border-left:0;border-top:1px solid #e4e8dd;padding:22px 0}.swing-physics-grid>section:first-child{border-top:0}.swing-position-observe,.swing-position-topics{margin-inline:20px}.swing-position-observe>summary>span{display:block;margin-left:15px}.swing-position-footer{padding:16px 16px;gap:6px}.swing-position-footer button{padding:11px 12px}.swing-timeline-reading>div{grid-template-columns:1fr}.swing-position-nav span{font-size:.7rem}.swing-position-nav b{width:42px;height:42px}.swing-position-nav li:before{top:25px}.swing-position-nav button{min-height:98px}}
@media(max-width:440px){.movement-page .physics-chapters{grid-template-columns:1fr}.swing-position-header{align-items:flex-start}.swing-position-number{font-size:3rem}.swing-position-header h3{font-size:1.25rem}.swing-position-footer>span{font-size:.7rem;max-width:10ch}.swing-position-panel{border-radius:14px}}
.pose-contact-events{padding:13px 18px;background:#fffdf6;border-block:1px solid #dce1d3;color:#294b3f}.pose-contact-events header{display:flex;align-items:center;justify-content:space-between;gap:14px;font-size:.83rem}.pose-contact-events header button{border:1px solid #c6cfbd;border-radius:6px;background:#fffdf8;padding:7px 10px;font:inherit;color:inherit;cursor:pointer}.pose-contact-events header button[aria-pressed=true]{background:#e4ebdc}.pose-contact-events>div{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin:10px 0}.pose-contact-events>div>button{display:flex;align-items:center;gap:10px;text-align:left;padding:10px 12px;border:1px solid #d1d9c8;border-radius:9px;background:#fffefb;color:#294b3f;cursor:pointer;min-width:0;font:inherit}.pose-contact-events>div>button:disabled{opacity:.55;cursor:default}.pose-contact-events b{font-size:.82rem}.pose-contact-events small{display:block;font-size:.74rem;margin-top:4px;line-height:1.4}.pose-contact-events i{width:12px;height:12px;border-radius:50%;flex:none}.contact-gold{background:#b17b2f}.contact-orange{background:#c35e29}.pose-contact-events p{font-size:.75rem;line-height:1.5;margin:0;color:#5e6b5c}.pose-height-feedback{display:grid;grid-template-columns:1fr 1fr;gap:12px;padding:14px 0;font-size:.8rem;line-height:1.5}.pose-height-feedback b{display:block;font-size:1.1rem;color:#294b3f}.pose-height-feedback small{grid-column:1/-1;color:#66715c;font-size:.75rem}.pose-contact-events button:focus-visible{outline:3px solid #ad7f3d;outline-offset:2px}@media(max-width:580px){.pose-contact-events{padding:12px}.pose-contact-events>div{grid-template-columns:1fr}.pose-contact-events header{align-items:flex-start}}
.swing-term-group{margin-top:18px;border-top:1px solid #dce3d5}.swing-term-group>summary{cursor:pointer;padding:13px 0;font-size:.84rem;font-weight:700;line-height:1.5;color:#294b3f}.swing-term-group>summary>span{display:block;font-size:.74rem;font-weight:400;color:#67725e;margin:5px 0 0 15px;line-height:1.5}.swing-term{border:1px solid #dce3d5;border-radius:8px;margin:0 0 8px;background:#f7f8f1}.swing-term>summary{cursor:pointer;padding:12px;font-weight:650;font-size:.82rem;line-height:1.4}.swing-term dl{margin:0;padding:0 14px 15px}.swing-term dt{font-size:.71rem;font-weight:750;color:#8b6736;text-transform:uppercase;letter-spacing:.04em;margin:12px 0 5px}.swing-term dd{margin:0;font-size:.84rem;line-height:1.7;color:#4f604f}
/* P1–P10: explanations first, deeper physics available on demand. */
.swing-guide{padding:24px 34px 28px}.swing-guide-essential{font-size:1.0625rem;line-height:1.7;max-width:78ch;margin:0 0 22px;color:#3f5848}.swing-guide-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;align-items:start}.swing-guide-detail{min-width:0;border:1px solid #d8dfd1;border-radius:12px;background:#fafbf5;overflow:hidden}.swing-guide-detail>summary{padding:18px 20px;cursor:pointer;font-weight:700;font-size:1rem;line-height:1.5}.swing-guide-detail>summary small{display:block;font-size:.875rem;font-weight:400;color:#586b58;padding-left:17px;margin-top:4px}.swing-guide-detail[open]{background:#fffef9;border-color:#aebea4}.swing-guide-detail[open]>summary{border-bottom:1px solid #e0e5d8}.swing-guide-body{padding:6px 20px 20px}.swing-guide-body section{padding-top:16px}.swing-guide-body section+section{border-top:1px solid #e4e8dd;margin-top:18px}.swing-guide-body h4{font-size:1rem;line-height:1.45;color:#294b3f;margin:0 0 8px}.swing-guide-body>h4{margin-top:14px}.swing-guide-body p,.swing-guide-body li{font-size:1rem;line-height:1.75;color:#4b604e;margin:0}.swing-guide-body ol{padding-left:22px;margin:12px 0 20px}.swing-guide-body li+li{margin-top:12px}.swing-guide-body .swing-guide-check{margin-top:10px}.swing-guide-body .swing-guide-note{font-size:.875rem;line-height:1.65;color:#65715e;margin-top:18px}.swing-guide-body .swing-guide-connection,.swing-guide-body .swing-guide-question{padding:15px 16px;background:#edf1e6;border-left:3px solid #91723d;margin-top:20px}.swing-guide-question b{display:block;font-size:.875rem;margin-bottom:6px}.swing-position-theory{margin:0 34px;border-top:1px solid #d8dfd1}.swing-position-theory>summary{padding:20px 0;cursor:pointer;font-size:1rem;font-weight:700;line-height:1.5}.swing-position-theory>summary>span{display:block;font-size:.875rem;color:#61705b;font-weight:400;margin-left:16px}.swing-position-theory .swing-physics-grid{padding:0 0 12px}.swing-timeline .swing-physics-grid p{font-size:1rem}.swing-timeline .swing-term dd{font-size:.9375rem}.swing-timeline .swing-timeline-reading p{font-size:1rem}
@media(max-width:760px){.swing-guide{padding:22px 20px}.swing-guide-grid{grid-template-columns:1fr}.swing-guide-detail>summary{padding:16px}.swing-guide-body{padding-inline:16px}.swing-position-theory{margin-inline:20px}}

/* Keep contact inspection available without occupying the model header. */
.delivery-lab details.pose-contact-events{margin:0;border-radius:0;box-shadow:none}
.pose-contact-events>summary{display:flex;align-items:center;gap:10px;list-style:none;cursor:pointer;font-size:.78rem;line-height:1.45;color:#294b3f}
.pose-contact-events>summary::-webkit-details-marker{display:none}
.pose-contact-events>summary>span{min-width:0;color:#5e6b5c}
.pose-contact-events>summary::after{content:'+';margin-left:auto;flex:none;font-size:1.2rem;line-height:1}
.pose-contact-events[open]>summary::after{content:'−'}
.pose-contact-events>summary:focus-visible{outline:3px solid #ad7f3d;outline-offset:4px;border-radius:3px}
.pose-contact-events[open]>header{justify-content:flex-end;margin-top:12px}