:root{--bg:#101916;--panel:#17221d;--panel2:#1c2922;--line:#2b3930;--text:#ecece2;--muted:#92a397;--gold:#d2b57a;--mint:#8ed6b7;--coral:#f1957d;--violet:#b5a1f0;font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;color:var(--text);background:var(--bg);font-synthesis:none;color-scheme:dark}
*{box-sizing:border-box}body{margin:0}button,input,select{font:inherit}button{cursor:pointer}button,a,input,select,summary{touch-action:manipulation}button{color:inherit;border:0;background:none}button:focus-visible,a:focus-visible,summary:focus-visible,input:focus-visible,select:focus-visible{outline:2px solid var(--mint);outline-offset:4px}button:disabled{opacity:.35;cursor:default}button:not(:disabled):hover{filter:brightness(1.16)}a{color:inherit;text-decoration:none}header{height:91px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 4.3vw}.brand{display:flex;align-items:center;gap:13px;font-size:21px;font-weight:650;letter-spacing:2.1px}.brand i{font-family:Georgia,serif;font-weight:400;color:var(--gold)}.brand small{display:block;font-size:8px;letter-spacing:3px;color:var(--muted);margin-top:6px}.brand-icon{width:37px;height:37px;border:1px solid var(--gold);border-radius:50%;display:grid;place-items:center;color:var(--gold);font-family:Georgia,serif;font-size:23px}.header-right{display:flex;align-items:center;gap:24px}.privacy{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--muted)}.privacy>span{width:6px;height:6px;background:var(--mint);border-radius:50%}.icon-button{width:30px;height:30px;border:1px solid #47564c;border-radius:50%;color:var(--muted)}main{max-width:1600px;padding:35px 4.3vw 0;margin:auto}.intro{display:flex;justify-content:space-between;align-items:center;margin-bottom:29px}.eyebrow{font-size:9px;letter-spacing:1.8px;font-weight:600;color:var(--gold);margin:0 0 11px}.intro h1{font-size:clamp(23px,2.5vw,35px);font-family:Georgia,'Times New Roman',serif;font-weight:400;letter-spacing:-.5px;margin:0 0 10px}.intro>div>p:last-child{font-size:13px;color:var(--muted);margin:0}.outline{border:1px solid #455344;border-radius:5px;padding:11px 16px;font-size:12px;display:inline-flex;align-items:center;justify-content:center;gap:12px}.small-ball{width:10px;height:10px;border-radius:50%;background:var(--gold)}.tabs{display:flex;border-bottom:1px solid var(--line);gap:30px;margin-bottom:24px;align-items:stretch}.tabs button{padding:15px 0 18px;font-size:13px;color:var(--muted);border-bottom:2px solid transparent;white-space:nowrap}.tabs button.active{border-color:var(--gold);color:var(--text)}.tabs b{font-size:9px;font-weight:400;color:var(--gold);margin-right:9px}.tabs>span{margin-left:auto;align-self:center;font-size:8px;letter-spacing:1.3px;color:#6c8271}.workspace{display:grid;grid-template-columns:285px minmax(0,1fr);gap:24px;align-items:start}.controls{background:var(--panel);border:1px solid var(--line);border-radius:8px;padding:23px 21px 15px}.panel-title{display:flex;align-items:center;justify-content:space-between;margin-bottom:23px}.panel-title h2{font-size:15px;font-weight:500;margin:0}.panel-title>span{font-size:7px;letter-spacing:1px;color:var(--gold);border:1px solid #655b3d;border-radius:3px;padding:4px 5px}.control-label{font-size:8px;letter-spacing:1.2px;color:var(--muted);margin-bottom:10px}.control-label>span{float:right;letter-spacing:0;font-size:9px;color:#718576}.segmented{display:flex;background:#101a15;border:1px solid var(--line);padding:3px;border-radius:5px}.segmented button{flex:1;font-size:10px;padding:8px 0;color:var(--muted);border-radius:3px;white-space:nowrap}.segmented button.active{background:#304136;color:#f1f0e7}.dot{display:inline-block;width:6px;height:6px;border-radius:50%;margin-right:4px}.dot.white{background:#efece2}.dot.gold{background:var(--gold)}.field{margin-top:21px}label{font-size:11px}label>output{float:right;font-variant-numeric:tabular-nums;color:var(--gold);font-size:11px}.field>label{display:block;margin-bottom:12px}.muted{float:right;color:var(--muted)}select{width:100%;background:#1d2b23;border:1px solid #36463a;border-radius:4px;color:#d2d9ce;padding:9px 10px;font-size:11px}input[type=range]{width:100%;height:3px;accent-color:var(--gold);display:block;margin:19px 0 13px;cursor:pointer}input[type=range]::-webkit-slider-thumb{height:11px;width:11px}input[type=checkbox]{accent-color:var(--mint);vertical-align:middle;cursor:pointer;width:12px;height:12px;margin:0 5px 0 0}.range-caption{display:flex;align-items:center;justify-content:space-between;font-size:8px;color:var(--muted)}.text-button{font-size:10px;color:var(--gold);padding:0}.range-caption .text-button{font-size:8px;color:var(--muted)}.spin-field{border-top:1px solid var(--line);padding-top:20px}.spin-visual{display:flex;gap:12px;align-items:center}.cue-face{width:49px;height:49px;border-radius:50%;background:radial-gradient(circle at 34% 30%,#fffef6,#c3c7bd);box-shadow:inset -3px -3px 7px #808d82;position:relative;flex-shrink:0}.cue-face i{position:absolute;inset:9px;border:1px dashed #8d9688;border-radius:50%}.cue-face>span{position:absolute;width:8px;height:8px;background:#b3834c;border:2px solid #6d4b32;border-radius:50%;z-index:1;left:50%;top:50%;transform:translate(-50%,-50%)}.spin-visual strong{font-size:11px;font-weight:500}.spin-visual small{font-size:8px;line-height:1.6;display:block;color:var(--muted);max-width:125px;margin-top:4px}.tiny{border:1px solid #3a4b3f;border-radius:4px;padding:6px 8px;font-size:10px;color:#c2cfbf}.spin-visual>.tiny{margin-left:auto;border:0}.two-fields{display:grid;grid-template-columns:1fr 1fr;gap:12px}details{font-size:10px}summary{list-style:none;cursor:pointer}summary::-webkit-details-marker{display:none}.controls details{margin-top:22px;border-top:1px solid var(--line);padding-top:16px;color:var(--muted)}.controls summary span{float:right}.details-body{padding-top:14px}.details-body .check{display:flex;gap:5px;margin-bottom:15px;align-items:start}.check span{color:#c4d1c0}.check small{display:block;font-size:9px;line-height:1.5;color:var(--muted);margin-top:4px}.details-body>label{display:block}.control-footer{border-top:1px solid var(--line);margin-top:18px;padding-top:15px;display:flex;align-items:center;justify-content:space-between}.control-footer>span{font-size:8px;color:#6d8372}.table-column{min-width:0;background:#15211b;border:1px solid var(--line);border-radius:8px;overflow:hidden}.table-toolbar{padding:17px 21px;display:flex;align-items:center;justify-content:space-between;gap:10px}.table-context{font-size:8px;color:var(--muted);letter-spacing:1.4px;white-space:nowrap;display:flex;align-items:center;gap:8px}.live-dot{height:5px;width:5px;border-radius:50%;background:var(--gold)}.table-toggles{display:flex;align-items:center;gap:14px}.table-toggles label{font-size:10px;color:var(--muted);white-space:nowrap}#stage{position:relative;height:clamp(330px,34vw,520px);background:radial-gradient(ellipse at 50% 48%,#243a2b 0,#17251d 60%,#15211b 100%);overflow:hidden;isolation:isolate;touch-action:none}#stage canvas{width:100%;height:100%;display:block;cursor:grab;touch-action:none}#stage canvas:active{cursor:grabbing}.stage-note{position:absolute;bottom:10px;left:50%;transform:translateX(-50%);font-size:8px;letter-spacing:1.4px;color:#6e8d79;pointer-events:none;white-space:nowrap}.angle-badge{position:absolute;left:24px;top:15px;pointer-events:none;border-left:1px solid #53644e;padding-left:10px}.angle-badge strong{display:block;font-size:26px;line-height:1.2;color:#d4c393;font-family:Georgia,serif;font-weight:400}.angle-badge span{font-size:7px;letter-spacing:1.1px;color:var(--muted)}#loading{position:absolute;inset:0;display:grid;place-items:center;color:var(--gold);font-size:13px;padding:32px;text-align:center;line-height:1.8;z-index:4;background:#14231c}.legend{display:flex;gap:18px;justify-content:center;flex-wrap:wrap;padding:15px 12px 18px;font-size:8px;color:#9aac9a;border-bottom:1px solid var(--line)}.legend>span{display:flex;align-items:center;gap:6px}.line{height:2px;width:19px;background:var(--gold);display:inline-block}.dashed{background:repeating-linear-gradient(90deg,#d9ddd5 0 4px,transparent 4px 7px)}.coral-line{background:var(--coral)}.mint-line{background:var(--mint)}.violet-line{background:var(--violet)}.transport{padding:19px 22px;display:flex;gap:15px;align-items:center;justify-content:space-between}.play-group{display:flex;gap:9px}.primary{background:var(--gold);color:#152019;border-radius:4px;padding:12px 20px;font-size:11px;font-weight:650;display:inline-flex;align-items:center;gap:12px}.primary>span{font-size:9px}.play-group .outline{font-size:10px;padding:10px 13px;color:#b3c2b2;border-color:#364a3c}.transport-right{display:flex;flex-direction:column;align-items:end;gap:7px;font-size:9px;color:var(--muted)}.transport-right label{font-size:9px}#shotStatus{font-size:8px;max-width:240px;text-align:right}.coach{border-top:1px solid var(--line);display:flex;align-items:start;gap:17px;padding:23px 23px 25px;background:#19271f;min-height:133px}.coach-number{color:#637b64;font-family:Georgia,serif;font-size:27px;line-height:1;min-width:26px}.coach .eyebrow{font-size:7px;letter-spacing:1.3px;margin-bottom:9px}.coach h3{font-family:Georgia,serif;font-size:18px;font-weight:400;margin:0 0 9px}.coach p:last-child{color:#9bad9b;font-size:10px;line-height:1.8;margin:0;max-width:590px}.coach-metric{margin-left:auto;min-width:103px;border-left:1px solid #3b4a3a;padding-left:18px;align-self:center}.coach-metric strong{display:block;color:var(--gold);font-size:29px;font-family:Georgia,serif;font-weight:400}.coach-metric>span{font-size:6px;color:var(--muted);letter-spacing:1px;display:block;margin-top:8px}.drill-panel{margin:24px 0 0;background:#223025;border:1px solid #536042;border-radius:8px;padding:26px 30px}.drill-heading{display:flex;justify-content:space-between;gap:15px}.drill-heading .eyebrow{font-size:8px}.drill-heading h2{font-family:Georgia,serif;font-weight:400;font-size:24px;margin:0}.drill-steps{display:flex;gap:28px;margin:24px 0 18px}.drill-steps>span{font-family:Georgia,serif;color:#6d846e;border-bottom:1px solid #3d503e;padding-bottom:12px;font-size:20px;flex:1}.drill-steps b{font-family:Inter,ui-sans-serif,sans-serif;font-size:11px;font-weight:400;margin-left:10px}.drill-steps .current{color:var(--gold);border-color:var(--gold)}#drillText{font-size:12px;color:#b1c0ad;line-height:1.8;max-width:850px}.drill-result{display:flex;justify-content:space-between;gap:20px;align-items:center;border-top:1px solid #3c4d3b;margin-top:20px;padding-top:18px}.drill-result>p{font-size:11px;color:var(--mint);line-height:1.7}.drill-result>div{display:flex;gap:10px;flex-shrink:0}.bottom-notes{display:flex;justify-content:space-between;align-items:start;gap:20px;margin-top:22px;color:#7e957f;font-size:9px}.bottom-notes details{min-width:280px;font-size:10px}.bottom-notes summary:before{content:'+';margin-right:9px;color:var(--gold)}.bottom-notes>p{margin:0;font-size:8px;line-height:1.7;text-align:right}.coordinates{padding:17px 0;display:flex;gap:12px;flex-wrap:wrap;max-width:650px}.coordinates>span{flex-basis:100%;font-size:10px;line-height:1.7}.coordinates label{display:block;font-size:9px}.coordinates input{display:block;width:95px;background:var(--panel2);border:1px solid #42543f;color:var(--text);padding:7px;border-radius:3px;font-size:11px;margin-top:6px}.coordinates>p{flex-basis:100%;font-size:10px}footer{border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;margin-top:27px;padding:22px 0 25px}footer>span{font-size:7px;letter-spacing:1.3px;color:#758c77}footer i{font-style:normal;margin:0 9px;color:var(--gold)}footer .text-button{font-size:9px;color:#8da08c}dialog{max-width:680px;width:calc(100% - 32px);max-height:88vh;overflow:auto;background:#19271f;color:var(--text);border:1px solid #4b5e47;border-radius:10px;padding:36px;box-shadow:0 20px 100px #0008}dialog::backdrop{background:#050e09bf;backdrop-filter:blur(5px)}dialog h2{font:30px Georgia,serif;margin:0 0 22px}dialog h3{font-size:14px;font-weight:500;margin:25px 0 7px;color:var(--gold)}dialog p{font-size:12px;line-height:1.9;color:#b1c1ad}.dialog-close{position:absolute;right:16px;top:12px;font-size:26px;color:var(--muted)}.sources{display:flex;gap:10px;flex-wrap:wrap;margin:24px 0}.sources a{font-size:10px;border:1px solid #435740;border-radius:4px;padding:10px;color:var(--gold)}dialog .smallprint{font-size:10px;color:var(--muted);border-top:1px solid var(--line);padding-top:18px}[hidden]{display:none!important}
@media(min-width:1450px){.workspace{grid-template-columns:300px minmax(0,1fr)}#stage{height:510px}.controls{padding:25px}.table-column{min-height:759px}.coach{padding-top:29px;padding-bottom:30px}.transport{padding-top:24px;padding-bottom:24px}}
@media(max-width:1050px){main{padding:28px 25px 0}header{padding:0 25px}.workspace{gap:15px;grid-template-columns:255px minmax(0,1fr)}.controls{padding:20px 16px}.tabs{gap:24px}.tabs>span{display:none}.table-toggles{gap:9px}.table-toolbar{padding:15px 14px}.table-context{font-size:7px;letter-spacing:.7px}.table-toggles label{font-size:8px}.table-toggles .tiny{font-size:8px}.coach-metric{display:none}.transport{padding:17px 13px}.primary{padding:12px 15px}.legend{gap:11px;font-size:7px}.transport-right{max-width:120px}.intro h1{font-size:27px}.stage-note{font-size:6px}.angle-badge{left:14px}.coach{padding:22px 16px;gap:11px}.coach h3{font-size:17px}.coach p:last-child{font-size:10px}}
@media(max-width:760px){header{height:75px;padding:0 20px}.brand{font-size:17px}.brand small{font-size:6px;letter-spacing:2.5px}.brand-icon{width:32px;height:32px;font-size:20px}.header-right{gap:14px}.privacy{font-size:9px}main{padding:25px 17px 0}.intro{display:block;margin-bottom:20px}.intro h1{font-size:27px;max-width:320px;line-height:1.2}.intro>div>p:last-child{font-size:11px}.intro .outline{margin-top:18px;padding:10px 12px;font-size:11px}.tabs{gap:23px;margin-bottom:16px}.tabs button{font-size:11px;padding-bottom:14px}.tabs b{font-size:8px;margin-right:5px}.workspace{display:flex;flex-direction:column;gap:16px}.table-column{order:0;width:100%}.controls{order:1;width:100%;display:grid;grid-template-columns:1fr 1fr;column-gap:22px;padding:22px}.panel-title{grid-column:1/-1;margin-bottom:17px}.controls #ballControls{grid-column:1/-1}.control-footer,.controls details{grid-column:1/-1}.controls .field{margin-top:20px}.controls .spin-field{padding-top:0;border-top:none}.spin-visual small{max-width:110px;font-size:8px}.spin-visual{gap:9px}.cue-face{width:40px;height:40px}.two-fields{grid-column:1/-1}.controls details{margin-top:23px}.details-body{display:grid;grid-template-columns:1fr 1fr;gap:10px}.details-body input[type=range]{margin-top:3px}.details-body>label[for=elevation]{grid-column:1/-1}.details-body>input{grid-column:1/-1}.details-body .check{margin-bottom:7px}#stage{height:290px}.table-toolbar{padding:14px}.table-context{font-size:7px}.table-toggles{gap:10px}.table-toggles label{font-size:8px}.transport{padding:16px 13px}.primary{font-size:10px;padding:12px 15px}.legend{padding:12px 7px;gap:11px}.coach{padding:19px 15px}.coach h3{font-size:18px}.coach p:last-child{font-size:10px}.angle-badge{top:12px}.angle-badge strong{font-size:22px}.angle-badge span{font-size:6px}.stage-note{font-size:6px}.drill-panel{padding:22px 18px}.drill-heading h2{font-size:23px}.drill-heading .text-button{font-size:8px;white-space:nowrap;align-self:start}.drill-steps{gap:14px}.drill-steps b{font-size:9px;margin-left:4px}.drill-result{display:block}.drill-result>div{margin-top:15px}.drill-result>div>button{flex:1}.bottom-notes{display:block}.bottom-notes>p{text-align:left;margin-top:14px}footer{gap:15px}footer>span{font-size:6px;letter-spacing:.8px}footer .text-button{font-size:8px}dialog{padding:28px 23px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}
.language-picker{width:92px;padding:7px 9px;font-size:11px;background:#1d2b23;border-color:#435344}.language-picker option{font-size:12px}html[lang="zh-CN"]{font-family:Inter,-apple-system,BlinkMacSystemFont,'PingFang SC','Microsoft YaHei',sans-serif}html[lang="zh-CN"] .intro h1{letter-spacing:1px;line-height:1.4}html[lang="zh-CN"] .coach h3{line-height:1.6}html[lang="zh-CN"] .coach p:last-child{line-height:1.95}html[lang="zh-CN"] .eyebrow,html[lang="zh-CN"] .stage-note{letter-spacing:1px}html[lang="zh-CN"] .coach-metric{min-width:110px}html[lang="zh-CN"] .drill-steps b{line-height:1.7}html[lang="zh-CN"] .table-context{letter-spacing:.8px}
.cue-face{width:70px;height:70px;border:0;touch-action:none;cursor:crosshair}.cue-face i{inset:24%;pointer-events:none}.cue-face:before,.cue-face:after{content:'';position:absolute;background:#8d968855;pointer-events:none}.cue-face:before{left:50%;top:17%;bottom:17%;width:1px}.cue-face:after{top:50%;left:17%;right:17%;height:1px}.vertical-name{display:block;color:var(--gold);font-size:10px;margin-top:5px}.tip-presets{display:flex;gap:6px;margin-top:14px}.tip-presets button{flex:1;border:1px solid #3c503e;border-radius:3px;padding:7px 3px;font-size:9px;color:#bbceb7}.tip-explainer{font-size:9px;color:var(--muted);line-height:1.8;margin:12px 0 7px}.impact-state{font-size:9px;color:var(--mint);line-height:1.7;margin:0}.spin-visual small{max-width:115px}.spin-visual{gap:10px}.tip-height-field{border-bottom:1px solid var(--line);padding-bottom:16px}
@media(max-width:760px){.header-right{gap:12px}.header-right .privacy{display:none}.language-picker{width:82px;font-size:10px}html[lang="zh-CN"] .intro h1{font-size:26px}html[lang="zh-CN"] .drill-heading h2{font-size:21px;line-height:1.5}}
@media(max-width:760px){.controls .spin-field,.controls .tip-height-field{grid-column:1/-1}.spin-visual small{max-width:200px}.cue-face{width:70px;height:70px}}
.tabs{overflow-x:auto;scrollbar-width:thin}.tabs button{flex-shrink:0}.tabs>span{white-space:nowrap}.bearing-adjustments{display:flex;gap:7px;margin-top:14px}.bearing-adjustments .tiny{padding:7px;font-size:10px}.bearing-adjustments input{width:100%;min-width:0;background:#1d2b23;color:var(--text);border:1px solid #3d503e;border-radius:4px;padding:6px 5px;text-align:center;font-size:11px;font-variant-numeric:tabular-nums}