:root{--b:#149fd4;--d:#08699a;--m:#5c6870;--l:#d9e2de;--s:#e7f4fa;--c:#e85f51;font-family:Arial,"Microsoft YaHei",sans-serif}*{box-sizing:border-box}body{margin:0;background:#f5f5f1;color:#121619}button{font:inherit;cursor:pointer}h1,h2,h3,p{margin:0}.app{display:grid;grid-template-columns:240px 1fr;min-height:100vh}.side{padding:20px;background:white;border-right:1px solid var(--l);display:flex;flex-direction:column;gap:22px}.brand{display:flex;gap:12px;align-items:center}.brand img{width:46px;height:46px;border-radius:8px;object-fit:cover;border:1px solid var(--l)}.brand strong{display:block;letter-spacing:1px}.brand small{color:var(--m)}.nav{display:grid;gap:8px}.nav button,.bottom button,.btn,.ghost,.icon{min-height:44px;border-radius:8px;border:1px solid #cbd7d2;background:white;font-weight:800}.nav button{text-align:left;padding:0 12px;color:var(--m)}.nav .on,.bottom .on{background:var(--s);color:#111;border-color:#93d2ec}.main{max-width:1180px;width:100%;margin:auto;padding:24px 28px 92px}.top{display:flex;justify-content:space-between;gap:12px;align-items:center;margin-bottom:18px}.top h1{font-size:42px}.eye{color:var(--b);font-size:12px;font-weight:900;text-transform:uppercase;margin-bottom:8px}.grid{display:grid;grid-template-columns:1.15fr .85fr;gap:16px}.panel{background:white;border:1px solid var(--l);border-radius:8px;padding:16px;box-shadow:0 12px 30px #0001}.head{display:flex;justify-content:space-between;gap:12px;margin-bottom:16px}.pill,.tag{display:inline-flex;align-items:center;border-radius:999px;padding:7px 10px;background:#e1f4fb;color:var(--d);font-weight:850;font-size:13px}.hero{display:grid;grid-template-columns:160px 1fr;gap:18px;align-items:center}.board{height:160px;border-radius:8px;background:linear-gradient(145deg,#e7f4fa,#f8faf7);position:relative;border:1px solid var(--l)}.board:before{content:"";position:absolute;left:66px;top:28px;width:30px;height:88px;border-radius:18px;background:#8ab5a9}.board:after{content:"";position:absolute;left:36px;bottom:34px;width:110px;height:18px;border-radius:99px;background:var(--b);transform:rotate(-5deg)}.metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:16px}.metrics span,.path li{padding:12px;border:1px solid var(--l);border-radius:8px;background:#f8faf7;color:var(--m)}.metrics b{display:block;color:#111;font-size:24px}.targets{display:grid;grid-template-columns:repeat(5,1fr);gap:8px;margin-top:16px;padding-top:16px;border-top:1px solid var(--l)}.target{min-height:96px;text-align:left;padding:10px;border:1px solid var(--l);border-radius:8px;background:white}.target.on{background:var(--s);border-color:#93d2ec}.target b{display:block}.target small{color:var(--m)}.btn{background:var(--b);border-color:var(--b);color:white;padding:0 18px}.ghost{padding:0 16px}.list,.cards,.path{display:grid;gap:10px}.move{display:grid;grid-template-columns:38px 1fr auto;gap:10px;align-items:center;padding:12px;border:1px solid var(--l);border-radius:8px}.num,.ico{display:grid;place-items:center;width:38px;height:38px;border-radius:8px;background:#e1f4fb;color:var(--d);font-weight:900}.move p,.panel p{color:var(--m);line-height:1.45}.path{grid-column:1/-1}.path ul{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;list-style:none;padding:0;margin:0}.view{display:none}.view.on{display:block}.plans,.library,.safe{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.library{grid-template-columns:repeat(2,1fr)}.video{display:inline-flex;margin-top:10px;padding:9px 12px;border-radius:8px;background:var(--c);color:white;text-decoration:none;font-weight:800}.cal{display:grid;grid-template-columns:repeat(10,1fr);gap:8px}.day{display:grid;place-items:center;aspect-ratio:1;border:1px solid var(--l);border-radius:8px}.done{background:var(--b);color:white}.current{background:var(--s)}textarea,input[type=range]{width:100%}.dialog{width:min(760px,calc(100vw - 24px));border:0;border-radius:8px;padding:0}.box{padding:18px;background:white;border-radius:8px}.session{display:grid;grid-template-columns:1fr 1fr;gap:18px;align-items:center}.thumb{position:relative;display:block;min-height:270px;border-radius:8px;overflow:hidden;background:#eee}.thumb img{width:100%;height:270px;object-fit:cover}.thumb:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,#0000,#0008)}.play{position:absolute;left:16px;right:16px;bottom:16px;color:white;z-index:1}.play b:before{content:"▶ ";font-size:34px}.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(30px,1fr));gap:7px;margin-top:14px}.step{height:7px;border-radius:99px;background:#dce6e2}.step.on{background:var(--b)}.bottom{display:none}@media(max-width:900px){.app,.grid,.hero,.session,.plans,.library,.safe,.targets{grid-template-columns:1fr}.side{display:none}.main{padding:18px 12px 92px}.path ul{grid-template-columns:1fr}.bottom{position:fixed;left:10px;right:10px;bottom:10px;display:grid;grid-template-columns:repeat(5,1fr);gap:5px;background:white;padding:8px;border:1px solid var(--l);border-radius:8px}.bottom button{font-size:12px}.top h1{font-size:32px}}

.landing{min-height:100vh;display:grid;place-items:center;padding:24px;background:linear-gradient(140deg,#e7f4fa,transparent 42%),#f5f5f1}.landing-card{width:min(760px,100%);background:white;border:1px solid var(--l);border-radius:8px;padding:28px;box-shadow:0 18px 44px #0001}.landing-card h1{max-width:680px;font-size:clamp(36px,6vw,64px);line-height:1}.lead{max-width:620px;margin:16px 0;color:var(--m);font-size:20px;line-height:1.45}.quick-goals{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:20px 0}.quick-goals button{min-height:58px;border:1px solid #93d2ec;border-radius:8px;background:#e7f4fa;color:var(--d);font-weight:900}.fine{margin-top:12px;color:var(--m);font-size:13px}@media(max-width:680px){.quick-goals{grid-template-columns:1fr}.landing-card{padding:20px}}
.drill{display:grid;gap:8px;margin-top:10px}.drill p{padding:10px;border:1px solid var(--l);border-radius:8px;background:#f8faf7}.drill b{color:#121619}.session .drill{margin-top:0}
.dialog{max-height:calc(100vh - 24px);overflow:hidden}.box{max-height:calc(100vh - 24px);display:grid;grid-template-rows:auto minmax(0,1fr) auto;gap:14px}.session{align-items:start;min-height:0;overflow:auto;padding-right:4px}.session-actions{margin-top:0;padding-top:12px;border-top:1px solid var(--l);display:grid;grid-template-columns:1fr 1.2fr}.thumb{min-height:0;aspect-ratio:16/9}.thumb img{height:100%;min-height:0}.session .drill{max-height:360px;overflow:auto;padding-right:4px}.session .drill p{margin:0}.session .tag{margin:0 6px 8px 0}.dialog .head{margin-bottom:0}.dialog h2{line-height:1.15}@media(max-width:680px){.dialog{width:calc(100vw - 16px);max-height:calc(100vh - 16px)}.box{max-height:calc(100vh - 16px);padding:14px}.session{gap:12px}.thumb{width:100%;aspect-ratio:16/9}.session .drill{max-height:none;overflow:visible}.session-actions{grid-template-columns:1fr;gap:8px}.dialog .icon{width:44px;min-width:44px}.play{left:12px;right:12px;bottom:12px}.play b:before{font-size:28px}}
/* Session spacing refinement */
.session{gap:20px}.thumb{margin-bottom:4px}.play{left:0;right:0;bottom:0;padding:46px 16px 14px;background:linear-gradient(180deg,transparent,rgba(0,0,0,.72));line-height:1.25}.play b{display:block;margin-bottom:3px}.play b:before{vertical-align:middle}.session>div:last-child{display:grid;gap:12px;min-width:0}.session>div:last-child>p{margin:0;display:flex;flex-wrap:wrap;gap:8px;align-items:center}.session .tag{margin:0}.drill{gap:10px;margin-top:0}.drill p{margin:0;padding:12px 12px 11px}.drill b{display:block;margin-bottom:5px;font-size:13px;text-transform:uppercase;letter-spacing:.02em;color:var(--d)}.steps{margin-top:2px}.session-actions{margin-top:0}@media(max-width:680px){.session{gap:14px}.thumb{margin-bottom:0}.play{padding:42px 12px 12px}.drill{gap:8px}.drill p{padding:11px}.session>div:last-child{gap:10px}}
/* Fix session instruction layout after using a real div container */
#inst{display:block;min-width:0}.session #inst{margin:0}.session #inst .drill{display:grid;gap:10px;margin:0}.session #inst .drill p{display:block;margin:0;padding:12px;border:1px solid var(--l);border-radius:8px;background:#f8faf7;line-height:1.35}.session #inst .drill p b{display:block;margin:0 0 6px;color:var(--d);font-size:13px;line-height:1.1;text-transform:uppercase}.session #inst+.tag,.session #inst+p{margin-top:2px}@media(max-width:680px){.session #inst .drill{gap:9px}.session #inst .drill p{padding:12px}}
/* Stable session layout: prevent video from covering instruction cards */
.dialog{overflow:auto}.box{display:block;max-height:none}.session{display:block;overflow:visible;padding-right:0}.thumb{display:block;width:100%;height:auto;min-height:0;aspect-ratio:16/9;margin:0 0 14px}.thumb img{display:block;width:100%;height:100%;min-height:0;object-fit:cover}.session>div:last-child{display:block}.session #inst{clear:both;display:block;margin-top:0}.session #inst .drill{display:block}.session #inst .drill p{display:block;margin:0 0 10px;padding:12px;border:1px solid var(--l);border-radius:8px;background:#f8faf7;line-height:1.35}.session #inst .drill p b{display:block;margin-bottom:6px;color:var(--d);font-size:13px;text-transform:uppercase}.session>div:last-child>p{display:flex;flex-wrap:wrap;gap:8px;margin:10px 0}.steps{margin:10px 0 0}.session-actions{display:grid;grid-template-columns:1fr 1.2fr;gap:10px;margin-top:14px;padding-top:12px;border-top:1px solid var(--l)}@media(max-width:680px){.dialog{width:calc(100vw - 16px);max-height:calc(100vh - 16px)}.box{padding:12px}.thumb{margin-bottom:12px}.session-actions{grid-template-columns:1fr}.session #inst .drill p{margin-bottom:9px}}
.filters{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0}.filter{min-height:38px;padding:0 14px;border:1px solid var(--l);border-radius:999px;background:#fff;color:var(--m);font-weight:850}.filter.on{background:var(--s);border-color:#93d2ec;color:var(--d)}