:root{--green:#39765e;--green2:#2a614c;--dark:#273b32;--muted:#77897f;--border:#e0e8e1;--bg:#f8faf7;--pale:#edf4ed;--shadow:0 15px 42px rgba(34,78,51,.045);font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:var(--dark)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);min-height:100vh;display:flex;flex-direction:column}button,input{font:inherit}button{cursor:pointer}a{color:var(--green);text-decoration:none}a:hover{text-decoration:underline}.hidden{display:none!important}.nav{height:75px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border);padding:0 max(32px,calc((100vw - 1120px)/2));background:white}.brand{font-size:19px;font-weight:800;display:flex;align-items:center;gap:10px;color:var(--dark)}.brand:hover{text-decoration:none}.mark{width:35px;height:35px;display:grid;place-items:center;border-radius:11px;background:var(--green);color:white;font-size:18px}.navright{font-size:13px;color:var(--muted)}.container{max-width:1120px;width:100%;margin:auto;padding:68px 30px 70px;flex:1}.kicker{font-size:11px;letter-spacing:.19em;color:var(--green);font-weight:800}.headline{margin-bottom:38px}.headline h1{margin:14px 0 10px;font-size:clamp(32px,4vw,49px);letter-spacing:-.04em;line-height:1.2}.headline p{color:var(--muted);font-size:16px;margin:0}.columns{display:grid;grid-template-columns:minmax(250px,1fr) minmax(360px,530px);gap:58px;align-items:start}.intro{padding:20px 0}.intro-card{display:flex;gap:19px;margin-bottom:35px}.stepball{height:39px;width:39px;border-radius:50%;display:grid;place-items:center;background:var(--pale);color:var(--green);font-weight:800;flex-shrink:0}.intro-card h3{font-size:17px;margin:2px 0 8px}.intro-card p{color:var(--muted);font-size:14px;margin:0;line-height:1.75}.sidehint{font-size:12px;color:#8b9c91;padding-left:57px;margin-top:64px}.panel{background:white;border-radius:21px;border:1px solid var(--border);box-shadow:var(--shadow);padding:31px}.panel-title,.section-heading{display:flex;align-items:center;justify-content:space-between;gap:12px}.panel h2{margin:0;font-size:21px;letter-spacing:-.02em}.tag{border-radius:99px;padding:7px 11px;background:var(--pale);color:var(--green);font-size:11px;white-space:nowrap;font-weight:650}label:not(.check){display:block;margin:25px 0 9px;font-size:13px;font-weight:750}input:not([type=checkbox]){width:100%;padding:13px 14px;border:1px solid var(--border);border-radius:11px;background:white;color:var(--dark);outline:0;min-height:46px}input:focus{border-color:#51a98b;box-shadow:0 0 0 3px rgba(21,124,92,.12)}input::placeholder{color:#9fb0a6}.time-line{display:flex;align-items:stretch;flex-wrap:wrap;gap:8px}.time-line input{flex:1;min-width:180px}.soft{background:#f1f6f3;border:1px solid #deebe2;border-radius:10px;padding:9px 12px;color:#3c6955;font-size:12px;white-space:nowrap}.soft:hover{background:#e5f2ea;text-decoration:none}.hint{font-size:12px;color:#88998e;line-height:1.75;margin:8px 0}.number-line{display:flex;align-items:center;width:164px;border:1px solid var(--border);border-radius:11px;overflow:hidden}.number-line input{text-align:center;border:0;border-radius:0;min-height:43px;padding:5px;width:70px;appearance:textfield}.number-line input::-webkit-inner-spin-button{-webkit-appearance:none}.number-line button{width:46px;border:0;background:#f1f6f3;color:var(--green);height:45px;font-size:19px}.section-label{margin:27px 0 14px;font-size:13px;font-weight:800}.check{display:flex;align-items:center;gap:10px;margin:11px 0;font-size:13px}.check input{accent-color:var(--green);width:16px;height:16px}.optional span{font-weight:400;color:#96a69c}.primary{width:100%;background:var(--green);border:1px solid var(--green);color:white;border-radius:11px;padding:13px 17px;display:flex;align-items:center;justify-content:center;gap:12px;font-size:14px;font-weight:750;margin-top:26px}.primary span{font-size:20px}.primary:hover{background:var(--green2)}.back{border:0;background:transparent;color:var(--muted);font-size:13px;margin-bottom:21px}.activity-hero{border-radius:22px;background:linear-gradient(120deg,#0d674b 0%,#188e66 100%);color:white;padding:34px 38px 0;overflow:hidden;box-shadow:0 16px 45px rgba(3,91,55,.12)}.activity-hero .kicker{color:#b2e7cb}.activity-hero h1{font-size:clamp(22px,3vw,32px);margin:12px 0}.activity-hero p{color:#d2f2df;font-size:14px;margin:0 0 28px}.status-strip{display:grid;grid-template-columns:repeat(3,1fr);margin:0 -38px;background:rgba(0,35,19,.14);padding:22px 38px;gap:12px}.status-strip div{display:flex;flex-direction:column;gap:7px}.status-strip small{color:#c2e7d1;font-size:12px}.status-strip b{font-size:17px}.details{margin:22px 0}.details p{color:var(--muted);font-size:14px;line-height:1.7}.details a{font-size:13px;font-weight:700}.progress{background:var(--pale);border-radius:20px;height:9px;overflow:hidden;margin:24px 0 0}.progress div{background:var(--green);height:100%;width:0;transition:width .2s}.winner{display:flex;gap:18px;align-items:center;padding:18px 0;border-bottom:1px solid var(--border)}.winner:last-child{border-bottom:0}.winner>strong{height:38px;width:38px;border-radius:11px;background:var(--pale);color:var(--green);display:grid;place-items:center}.winner>div{flex:1;display:flex;flex-direction:column;gap:4px}.winner>div span{font-size:12px;color:var(--muted)}.winner a{font-size:12px}.actions{display:flex;gap:12px;align-items:center}.actions .primary{width:auto;margin:20px 0}.verify-section{margin:20px 0 0}details{background:white;padding:20px 27px;border:1px solid var(--border);border-radius:15px}summary{cursor:pointer;display:flex;justify-content:space-between;font-size:14px;font-weight:700;list-style:none}summary::-webkit-details-marker{display:none}details[open] summary span{transform:rotate(45deg)}details p{color:var(--muted);font-size:13px}footer{display:flex;justify-content:space-between;border-top:1px solid var(--border);color:#9aaca0;font-size:12px;padding:23px max(30px,calc((100vw - 1120px)/2));gap:12px}@media(max-width:820px){.container{padding:38px 17px 50px}.columns{grid-template-columns:1fr;gap:12px}.intro{display:none}.nav{padding:0 19px}.navright{display:none}.headline{margin-bottom:24px}.headline h1{font-size:34px}.panel{padding:24px}.activity-hero{padding:26px 23px 0}.status-strip{margin:0 -23px;padding:20px 23px}.status-strip b{font-size:14px}.time-line input{flex-basis:100%}}@media(max-width:460px){.panel-title{align-items:flex-start;flex-direction:column}.status-strip{gap:5px}.status-strip small{font-size:10px}.status-strip b{font-size:12px}.actions{flex-wrap:wrap}.actions .primary{width:100%}}

/* Restrained sage palette and layered mark */
.brand-mark{position:relative;display:block;width:36px;height:36px;border-radius:11px;background:#3d7861;overflow:hidden;box-shadow:0 3px 11px rgba(29,97,67,.13)}
.brand-mark span{position:absolute;width:17px;height:7px;border:2px solid #f1fff5;border-radius:3px;transform:skewY(-25deg)}
.brand-mark span:nth-child(1){left:10px;top:9px}
.brand-mark span:nth-child(2){left:10px;top:15px}
.brand-mark span:nth-child(3){left:10px;top:21px}
.headline h1{font-weight:760;letter-spacing:-.048em;line-height:1.22}
.headline h1 em{font-style:normal;color:var(--green)}
.nav{border-bottom-color:#eaf0ea}
.intro-card{padding-bottom:8px}
.panel{box-shadow:0 12px 40px rgba(33,65,45,.04)}
.stepball{background:#eaf3ea;color:#468068}
.soft,.number-line button{background:#f4f7f3;border-color:#e4ece3;color:#49715d}
.soft:hover{background:#eaf2e9}
.primary{background:#427b61;border-color:#427b61}
.primary:hover{background:#326a53}
.activity-hero{background:linear-gradient(125deg,#3c785e 0%,#63947b 100%);box-shadow:0 14px 36px rgba(54,105,70,.105)}
.activity-hero .kicker{color:#e0f3e7}
.activity-hero p{color:#f0f8f1}
.status-strip{background:rgba(21,63,43,.13)}
.status-strip small{color:#edf7ed}
@media(max-width:820px){.headline h1{font-size:clamp(30px,7vw,39px)}}