:root{--paper:#f5f0e6;--ink:#213a32;--green:#2b735d;--night:#172a25;--mint:#9ee7c8;--coral:#ef715f;--line:#d8d0c1;--white:#fffdf7;--background:#f5f0e6;--foreground:#213a32;--card:#fffdf7;--card-foreground:#213a32;--popover:#fffdf7;--popover-foreground:#213a32;--primary:#213a32;--primary-foreground:#fffdf7;--secondary:#e8e1d5;--secondary-foreground:#213a32;--muted:#e8e1d5;--muted-foreground:#587068;--accent:#9ee7c8;--accent-foreground:#172a25;--destructive:#ef715f;--border:#d8d0c1;--input:#d8d0c1;--ring:#2b735d;--radius:.75rem}*{box-sizing:border-box}html{background:var(--paper);min-width:320px}body{color:var(--ink);background:var(--paper);margin:0;font-family:Georgia,Times New Roman,serif}button,a{font:inherit}a{color:inherit;text-decoration:none}button{color:inherit}.game-shell{flex-direction:column;min-height:100svh;display:flex;overflow:hidden}.topbar{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;width:min(1180px,100% - 48px);height:84px;margin:0 auto;display:flex}.wordmark{letter-spacing:.18em;align-items:center;gap:10px;font:600 12px/1 Arial,sans-serif;display:flex}.brand-mark{width:24px;height:24px;position:relative;transform:rotate(45deg)}.brand-mark i{background:var(--green);border-radius:50%;width:7px;height:7px;position:absolute}.brand-mark i:first-child{top:8px;left:1px}.brand-mark i:nth-child(2){top:1px;left:9px}.brand-mark i:nth-child(3){top:14px;left:9px}.game-label,.eyebrow{color:var(--green);letter-spacing:.2em;font:700 10px/1 Arial,sans-serif}.topbar-actions{align-items:center;gap:22px;display:flex}.how-to-button{border:1px solid var(--line);color:var(--green);cursor:pointer;letter-spacing:.12em;text-transform:uppercase;background:0 0;border-radius:999px;padding:10px 14px;font:700 9px/1 Arial,sans-serif}.how-to-button:hover{background:var(--white)}.intro-screen{grid-template-columns:1fr .82fr;align-items:center;gap:100px;width:min(1100px,100% - 48px);margin:auto;padding:72px 0 96px;display:grid}.eyebrow{text-transform:uppercase;margin:0 0 24px}.intro-copy h1{letter-spacing:-.055em;margin:0;font-size:clamp(68px,9vw,118px);font-weight:400;line-height:.84}.intro-copy h1 em{color:var(--green);font-weight:400}.intro-text{color:#587068;max-width:540px;margin:38px 0 32px;font-size:18px;line-height:1.6}.primary-button,.submit-button{cursor:pointer;background:var(--ink);color:var(--white);letter-spacing:.12em;text-transform:uppercase;border:0;border-radius:10px;justify-content:space-between;align-items:center;gap:30px;padding:18px 20px;font:700 11px/1 Arial,sans-serif;transition:transform .2s,background .2s;display:inline-flex}.primary-button:hover,.submit-button:hover{background:var(--green);transform:translateY(-2px)}.primary-button:focus-visible,.submit-button:focus-visible,.precision-board:focus-visible,.wordmark:focus-visible{outline:3px solid var(--coral);outline-offset:4px}.demo-card{background:var(--night);border-radius:34px;flex-direction:column;justify-content:center;align-items:center;min-height:430px;padding:44px;display:flex;position:relative;transform:rotate(2deg);box-shadow:0 28px 70px #213a322e}.demo-frame{aspect-ratio:1.3;border:1px solid #ffffff52;width:min(100%,330px);position:relative}.demo-frame:before,.demo-frame:after{content:"";background:#9ee7c852;position:absolute}.demo-frame:before{width:1px;top:0;bottom:0;left:50%}.demo-frame:after{height:1px;top:50%;left:0;right:0}.demo-cross{border:1px solid var(--coral);border-radius:50%;width:18px;height:18px;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);box-shadow:0 0 18px #ef715f59}.demo-angle{background:var(--mint);transform-origin:bottom;width:1px;height:30%;position:absolute;bottom:14%;left:50%;transform:rotate(42deg)}.measure-line{background:#ffffff47;justify-content:space-between;width:72%;height:1px;margin-top:64px;display:flex}.measure-line i{background:var(--mint);width:1px;height:13px;margin-top:-6px}.measure-line i:nth-child(2){align-self:center}.demo-card p{color:#a9beb6;letter-spacing:.1em;text-transform:uppercase;margin:26px 0 0;font:11px/1.3 Arial,sans-serif}.best-note{color:#73867f;letter-spacing:.16em;margin:24px 0 0;font:700 9px/1 Arial,sans-serif}.play-screen{width:min(1040px,100% - 48px);margin:auto;padding:44px 0 74px}.run-header{grid-template-columns:120px 1fr 120px;align-items:center;gap:28px;margin-bottom:24px;display:grid}.run-header>div:first-child,.score-box{flex-direction:column;gap:6px;display:flex}.run-header span{color:#73867f;letter-spacing:.18em;font:700 9px/1 Arial,sans-serif}.run-header strong{letter-spacing:.08em;font:700 14px/1 Arial,sans-serif}.score-box{text-align:right}.round-track{justify-content:center;gap:8px;display:flex}.round-track i{background:var(--line);border-radius:99px;width:100%;max-width:42px;height:4px}.round-track i.current,.round-track i.won{background:var(--green)}.round-track i.lost{background:var(--coral)}.stage{background:var(--night);min-height:650px;color:var(--white);border-radius:34px;grid-template-rows:auto 1fr auto;padding:44px 54px 36px;display:grid;box-shadow:0 28px 75px #213a3229}.stage-copy{text-align:center}.stage-copy .eyebrow{color:var(--mint);margin-bottom:12px}.stage-copy h2{letter-spacing:-.035em;margin:0;font-size:clamp(34px,5vw,54px);font-weight:400}.stage-copy>p:last-child{color:#a9beb6;letter-spacing:.08em;text-transform:uppercase;margin:13px 0 0;font:11px/1 Arial,sans-serif}.precision-board{cursor:crosshair;touch-action:manipulation;background:#ffffff06;border:1px solid #ffffff52;border-radius:3px;align-self:center;width:min(76%,610px);height:330px;margin:34px auto;padding:0;position:relative;overflow:hidden}.precision-board:hover{background:#ffffff0a}.precision-board:disabled{cursor:default;opacity:1}.precision-board.shape-circle{border-radius:50%;width:min(50vw,370px);height:min(50vw,370px);max-height:370px}.precision-board.shape-grid{background:0 0;border:0}.precision-board.frame-tall{width:min(54%,390px);height:370px}.precision-board.frame-square{width:min(58vw,370px);height:min(58vw,370px)}.guess-point,.true-point{width:19px;height:19px;position:absolute;transform:translate(-50%,-50%)}.guess-point:before,.guess-point:after{content:"";background:var(--coral);position:absolute}.guess-point:before{width:1px;height:19px;top:0;left:9px}.guess-point:after{width:19px;height:1px;top:9px;left:0}.true-point{background:var(--mint);width:8px;height:8px;box-shadow:0 0 18px var(--mint);border-radius:50%;top:50%;left:50%}.guide{opacity:.28;border-color:var(--mint);pointer-events:none;border-style:dashed;position:absolute}.guide.horizontal{border-width:1px 0 0;top:50%;left:0;right:0}.guide.vertical{border-width:0 0 0 1px;top:0;bottom:0;left:50%}.pattern-dot{background:#ffffffb8;border-radius:50%;width:12px;height:12px;position:absolute;transform:translate(-50%,-50%);box-shadow:0 0 14px #ffffff1f}.guess-split,.true-split{pointer-events:none;position:absolute}.guess-split.x,.true-split.x{width:2px;top:0;bottom:0;transform:translate(-50%)}.guess-split.y,.true-split.y{height:2px;left:0;right:0;transform:translateY(-50%)}.guess-split{background:var(--coral);box-shadow:0 0 15px #ef715f4d}.true-split{background:var(--mint);box-shadow:0 0 15px #9ee7c84d}.true-split.x{left:50%}.true-split.y{top:50%}.angle-board{align-self:center;width:min(82%,630px);margin:32px auto}.angle-dial{aspect-ratio:2;border-bottom:1px solid #ffffff40;width:min(76vw,390px);margin:0 auto 34px;position:relative;overflow:hidden}.angle-dial:before{content:"";border:1px dashed #ffffff29;border-bottom:0;border-radius:999px 999px 0 0;height:80%;position:absolute;bottom:0;left:10%;right:10%}.angle-base,.angle-arm{height:2px;position:absolute;bottom:0}.angle-base{background:#ffffff6b;width:80%;left:10%}.angle-arm{transform-origin:0;width:40%;left:50%}.angle-arm.guess{background:var(--coral);box-shadow:0 0 12px #ef715f4d}.angle-arm.target{background:var(--mint);box-shadow:0 0 12px #9ee7c859}.angle-dial>span{color:#a9beb6;letter-spacing:.14em;text-transform:uppercase;font:700 9px/1 Arial,sans-serif;position:absolute;bottom:18px;left:50%;transform:translate(-50%)}.angle-control{display:block}.angle-control input{width:100%;accent-color:var(--mint);cursor:ew-resize}.line-options,.circle-options{grid-template-columns:repeat(5,1fr);align-self:center;gap:16px;width:min(88%,720px);margin:38px auto;display:grid}.line-options button,.circle-options button{color:#8fa79e;cursor:pointer;background:#ffffff06;border:1px solid #ffffff1f;border-radius:16px;flex-direction:column;justify-content:flex-end;align-items:center;gap:15px;min-width:0;padding:20px 8px 12px;transition:background .18s,border-color .18s,transform .18s;display:flex;overflow:hidden}.line-options button:hover:not(:disabled),.circle-options button:hover:not(:disabled){background:#ffffff12;transform:translateY(-2px)}.line-options button:focus-visible,.circle-options button:focus-visible,.angle-control input:focus-visible{outline:3px solid var(--coral);outline-offset:3px}.line-options button.is-chosen,.circle-options button.is-chosen{border-color:var(--coral)}.line-options button.is-correct,.circle-options button.is-correct{border-color:var(--mint);background:#9ee7c814}.line-options i{background:var(--white);transform-origin:50%;width:2px;height:225px;display:block}.line-options button.is-chosen i{background:var(--coral)}.line-options button.is-correct i{background:var(--mint);box-shadow:0 0 16px #9ee7c84d}.line-options span,.circle-options span{letter-spacing:.12em;font:700 10px/1 Arial,sans-serif}.circle-options{grid-template-columns:repeat(2,1fr);width:min(82%,580px)}.circle-options button{justify-content:center;min-height:300px}.circle-options i{border:2px solid var(--white);border-radius:50%;display:block}.circle-options button.is-chosen i{border-color:var(--coral)}.circle-options button.is-correct i{border-color:var(--mint);box-shadow:0 0 22px #9ee7c82e}.compare-options{align-self:center;gap:18px;width:min(88%,650px);min-height:245px;margin:38px auto;display:flex!important}.compare-options button{color:#8fa79e;cursor:pointer;background:#ffffff06;border:1px solid #ffffff1f;border-radius:16px;flex-direction:column;flex:1 1 0;justify-content:center;align-items:center;gap:42px;width:0;min-width:0;height:100%;min-height:245px;padding:22px 12px 16px;transition:background .18s,border-color .18s,transform .18s;display:flex;overflow:hidden}.compare-options button:hover:not(:disabled){background:#ffffff12;transform:translateY(-2px)}.compare-options button:focus-visible{outline:3px solid var(--coral);outline-offset:3px}.compare-options button.is-chosen{border-color:var(--coral)}.compare-options button.is-correct{border-color:var(--mint);background:#9ee7c814}.compare-measure{justify-content:center;align-items:center;width:min(82%,190px);height:18px;display:flex}.compare-line{background:var(--white);flex:none;max-width:100%;height:2px;display:block}.gap-pair{justify-content:center;align-items:center;display:flex}.gap-pair i{background:var(--white);border-radius:50%;flex:0 0 13px;width:13px;height:13px}.compare-options button.is-chosen .compare-line,.compare-options button.is-chosen .gap-pair i{background:var(--coral)}.compare-options button.is-correct .compare-line,.compare-options button.is-correct .gap-pair i{background:var(--mint);box-shadow:0 0 14px #9ee7c84d}.compare-options button>span:last-child{letter-spacing:.12em;font:700 10px/1 Arial,sans-serif}.stage-footer{justify-content:space-between;align-items:center;gap:24px;display:flex}.stage-footer>span{color:#8fa79e;letter-spacing:.15em;text-transform:uppercase;font:700 9px/1.4 Arial,sans-serif}.result-screen{text-align:center;width:min(780px,100% - 48px);margin:auto;padding:64px 0 80px}.result-screen h1{color:var(--green);letter-spacing:-.055em;margin:0;font-size:clamp(86px,14vw,142px);font-weight:400;line-height:.9}.result-kicker{color:#587068;margin:22px 0 28px;font-size:19px}.result-ribbon{flex-wrap:wrap;justify-content:center;gap:7px;margin-bottom:28px;display:flex}.result-ribbon i{border-radius:99px;width:18px;height:6px}.result-ribbon i.sharp{background:var(--green)}.result-ribbon i.close{background:#d4a740}.result-ribbon i.miss{background:var(--coral)}.result-stats{border-top:1px solid var(--line);border-bottom:1px solid var(--line);grid-template-columns:repeat(3,1fr);margin-bottom:34px;display:grid}.result-stats div{flex-direction:column;gap:8px;padding:22px 18px;display:flex}.result-stats div+div{border-left:1px solid var(--line)}.result-stats span{color:#73867f;letter-spacing:.17em;text-transform:uppercase;font:700 9px/1 Arial,sans-serif}.result-stats strong{font-size:25px;font-weight:400}.result-actions{justify-content:center;align-items:center;gap:28px;display:flex}.expert-unlocked,.expert-locked{color:var(--green);letter-spacing:.15em;text-transform:uppercase;margin:-12px 0 24px;font:700 9px/1.45 Arial,sans-serif}.expert-locked{color:#73867f}.expert-button{background:var(--coral)}.text-button{color:var(--green);cursor:pointer;letter-spacing:.12em;text-transform:uppercase;background:0 0;border:0;border-bottom:1px solid;align-items:center;gap:8px;padding:8px 0;font:700 10px/1 Arial,sans-serif;display:inline-flex}.back-link{color:#73867f;letter-spacing:.14em;text-transform:uppercase;margin-top:28px;font:700 9px/1 Arial,sans-serif;display:inline-block}.site-footer{color:#50685f;letter-spacing:.12em;text-transform:uppercase;justify-content:space-between;align-items:center;gap:20px;width:min(1040px,100% - 48px);margin:0 auto;padding:18px 0 26px;font:700 9px/1 Arial,sans-serif;display:flex}.site-footer nav{align-items:center;gap:16px;display:flex}.site-footer a{border-bottom:1px solid #0000;padding:6px 0}.site-footer a:hover{color:var(--ink);border-color:currentColor}.site-footer a:focus-visible{outline:3px solid var(--coral);outline-offset:4px}.dialog-backdrop{z-index:20;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#172a25b3;place-items:center;padding:24px;display:grid;position:fixed;inset:0}.how-to-card{background:var(--white);border-radius:28px;width:min(620px,100%);max-height:calc(100svh - 48px);padding:48px;position:relative;overflow:auto;box-shadow:0 30px 90px #172a2559}.how-to-card header h2{letter-spacing:-.04em;margin:0;font-size:clamp(42px,7vw,64px);font-weight:400}.how-to-card header>p:last-child{color:#587068;margin:18px 0 30px;font-size:17px;line-height:1.55}.dialog-close{border:1px solid var(--line);cursor:pointer;background:0 0;border-radius:50%;width:36px;height:36px;font:25px/1 Arial,sans-serif;position:absolute;top:18px;right:20px}.how-to-steps{border-top:1px solid var(--line)}.how-to-steps p{border-bottom:1px solid var(--line);grid-template-columns:38px 1fr;align-items:center;gap:16px;margin:0;padding:17px 0;display:grid}.how-to-steps strong{background:var(--green);width:30px;height:30px;color:var(--white);border-radius:50%;place-items:center;font:700 11px/1 Arial,sans-serif;display:grid}.how-to-steps span{color:#50685f;font-size:15px;line-height:1.45}.how-to-guide{border:1px solid var(--line);border-radius:15px;grid-template-columns:repeat(3,1fr);margin:28px 0;display:grid;overflow:hidden}.how-to-guide p{flex-direction:column;gap:7px;margin:0;padding:16px 12px;display:flex}.how-to-guide p+p{border-left:1px solid var(--line)}.how-to-guide strong{color:var(--green);letter-spacing:.1em;text-transform:uppercase;font:700 9px/1 Arial,sans-serif}.how-to-guide span{color:#73867f;font:12px/1.35 Arial,sans-serif}.how-to-play{width:100%}.sr-only{clip:rect(0,0,0,0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}@media (prefers-reduced-motion:reduce){*,:before,:after{transition-duration:.01ms!important;animation-duration:.01ms!important}}@media (max-width:760px){html,body{min-height:100%;overflow-x:hidden}.game-shell.phase-ready,.game-shell.phase-complete{overflow:visible}.topbar{width:calc(100% - 32px);height:70px}.game-label{display:none}.topbar-actions{gap:8px}.intro-screen{grid-template-columns:1fr;gap:58px;width:calc(100% - 32px);padding:58px 0 70px}.intro-copy h1{font-size:clamp(64px,20vw,90px)}.intro-text{margin:28px 0;font-size:16px}.demo-card{border-radius:24px;min-height:350px;padding:28px}.play-screen{width:calc(100% - 24px);padding:22px 0 34px}.run-header{grid-template-columns:80px 1fr 80px;gap:10px;margin-bottom:14px}.round-track{gap:4px}.stage{border-radius:24px;min-height:calc(100svh - 132px);padding:34px 18px 24px}.stage-copy h2{font-size:34px}.precision-board{width:100%;height:min(43svh,330px);margin:24px auto}.precision-board.shape-circle{width:min(76vw,330px);height:min(76vw,330px)}.precision-board.frame-tall{width:min(70vw,300px);height:min(43svh,360px)}.precision-board.frame-square{width:min(76vw,330px);height:min(76vw,330px)}.line-options{gap:7px;width:100%}.line-options button{border-radius:11px;padding:14px 4px 10px}.line-options i{height:min(30svh,195px)}.circle-options{gap:10px;width:100%}.circle-options button{min-height:245px;padding:14px 4px}.compare-options{gap:10px;width:100%}.compare-options button{gap:34px;min-height:220px;padding:14px 4px}.stage-footer>span{max-width:47%}.result-screen{width:calc(100% - 32px);padding:54px 0 68px}.result-stats div{padding:20px 8px}.result-actions{flex-direction:column;gap:14px}.site-footer{text-align:center;flex-direction:column;justify-content:center;width:calc(100% - 32px);padding-top:12px}.site-footer nav{flex-wrap:wrap;justify-content:center}.dialog-backdrop{padding:12px}.how-to-card{border-radius:22px;padding:42px 24px 26px}.how-to-guide{grid-template-columns:1fr}.how-to-guide p+p{border-left:0;border-top:1px solid var(--line)}}@media (max-width:600px){.game-shell.phase-playing,.game-shell.phase-feedback{grid-template-rows:62px minmax(0,1fr);width:100%;height:100dvh;min-height:0;display:grid;overflow:hidden}.phase-playing .topbar,.phase-feedback .topbar{width:calc(100% - 24px);height:62px}.phase-playing .wordmark,.phase-feedback .wordmark{letter-spacing:.1em;white-space:nowrap;font-size:9px}.phase-playing .brand-mark,.phase-feedback .brand-mark{flex:0 0 21px;width:21px;height:21px}.phase-playing .how-to-button,.phase-feedback .how-to-button{padding:9px 11px}.play-screen{grid-template-rows:auto minmax(0,1fr);width:calc(100% - 16px);height:calc(100dvh - 62px);min-height:0;margin:0 auto;padding:8px 0 10px;display:grid}.run-header{grid-template-columns:66px 1fr 66px;gap:7px;margin-bottom:7px}.run-header>div:first-child,.score-box{gap:3px}.run-header span{font-size:8px}.run-header strong{font-size:11px}.round-track{gap:3px}.round-track i{height:3px}.stage{border-radius:19px;grid-template-rows:auto minmax(0,1fr) auto;width:100%;height:100%;min-height:0;padding:18px 12px 12px}.stage-copy .eyebrow{margin-bottom:7px;font-size:8px}.stage-copy h2{font-size:clamp(25px,8vw,32px);line-height:.98}.stage-copy>p:last-child{margin-top:8px;font-size:8px;line-height:1.25}.precision-board{height:min(34dvh,260px);margin:10px auto}.precision-board.shape-circle,.precision-board.frame-square{width:min(64vw,30dvh);height:min(64vw,30dvh)}.precision-board.frame-tall{width:min(58vw,250px);height:min(34dvh,280px)}.angle-board{width:94%;margin:10px auto}.angle-dial{width:min(76vw,340px);max-height:26dvh;margin-bottom:15px}.angle-dial>span{bottom:10px}.line-options,.circle-options{align-self:stretch;margin:10px auto}.compare-options{align-self:center;height:min(29dvh,205px);min-height:0;margin:10px auto}.line-options{gap:5px}.line-options button{gap:8px;height:100%;min-height:0;padding:8px 3px 7px}.line-options i{height:min(22dvh,150px)}.circle-options button,.compare-options button{gap:23px;height:min(29dvh,205px);min-height:0;padding:10px 3px}.circle-options i{max-width:34vw;max-height:20dvh}.compare-line{max-width:100%}.gap-pair{max-width:78%}.stage-footer{gap:10px;min-height:42px}.stage-footer>span{letter-spacing:.1em;max-width:54%;font-size:7px}.submit-button{flex:none;gap:12px;padding:13px 14px;font-size:9px}.dialog-backdrop{padding:8px}.how-to-card{max-height:calc(100dvh - 16px);padding:38px 20px 20px}}@media (max-width:600px) and (max-height:700px){.how-to-card{gap:0;padding:28px 16px 12px}.how-to-card header .eyebrow{margin-bottom:10px;font-size:8px}.how-to-card header h2{font-size:34px}.how-to-card header>p:last-child{margin:9px 0 13px;font-size:12px;line-height:1.35}.dialog-close{width:30px;height:30px;font-size:20px;top:11px;right:12px}.how-to-steps p{grid-template-columns:28px 1fr;gap:9px;padding:8px 0}.how-to-steps strong{width:24px;height:24px;font-size:9px}.how-to-steps span{font-size:11px;line-height:1.3}.how-to-guide{margin:10px 0}.how-to-guide p{gap:3px;padding:7px 9px}.how-to-guide strong{font-size:7px}.how-to-guide span{font-size:9px}.how-to-play{padding:12px 14px}}
