:root{--paper:#f4f1e8;--ink:#111;--muted:#66645d;--line:rgba(17,17,17,.14);--lime:#d8ff5b;--danger:#c94a3c;--white:#fff;--shadow:0 22px 60px rgba(17,17,17,.09);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Hiragino Sans","Yu Gothic UI","Yu Gothic",sans-serif;color:var(--ink);background:var(--paper)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);-webkit-font-smoothing:antialiased}button,input{font:inherit}button,a{-webkit-tap-highlight-color:transparent}a{color:inherit}.topbar{position:sticky;top:0;z-index:30;height:58px;padding:0 max(16px,env(safe-area-inset-left));display:flex;align-items:center;justify-content:space-between;background:rgba(244,241,232,.93);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}.brand{font-size:12px;font-weight:950;letter-spacing:.08em;text-decoration:none}.progress-dots{display:flex;gap:7px}.progress-dots i{width:7px;height:7px;border-radius:50%;background:#cbc8be;transition:.2s}.progress-dots i.active{width:24px;border-radius:99px;background:var(--ink)}.shell{width:min(1080px,calc(100% - 32px));margin:0 auto;padding:44px 0 80px}.view{animation:fadeIn .28s ease}.view[hidden]{display:none!important}@keyframes fadeIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}.hero-grid{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(250px,.75fr);gap:54px;align-items:center;min-height:520px}.eyebrow{margin:0 0 16px;font-size:12px;font-weight:950;letter-spacing:.16em}.hero-copy h1,.step-title{font-size:clamp(44px,7.2vw,88px);line-height:.93;letter-spacing:-.065em;margin:0;font-weight:950}.hero-copy h1 em,.step-title em{font-style:normal;background:var(--lime);box-shadow:0 .08em 0 var(--lime)}.lead{max-width:650px;margin:24px 0 0;color:#56544e;font-size:15px;line-height:1.9;font-weight:600}.lead.narrow{max-width:680px}.rule-strip{display:flex;gap:9px;align-items:center;flex-wrap:wrap;margin-top:24px;font-size:12px;font-weight:900;letter-spacing:.05em}.rule-strip span{border:1px solid var(--line);padding:8px 11px;border-radius:99px;background:rgba(255,255,255,.55)}.rule-strip b{font-size:12px}.bucket-zone{position:relative;display:grid;justify-items:center;padding-top:35px}.bucket-handle{width:210px;height:96px;border:10px solid #1e1e1b;border-bottom:0;border-radius:110px 110px 0 0;opacity:.9}.bucket{position:relative;width:280px;height:320px;margin-top:-20px;border:12px solid #171715;border-top-width:16px;border-radius:20px 20px 56px 56px;overflow:hidden;background:#eee9de;box-shadow:var(--shadow)}.water{position:absolute;left:0;right:0;bottom:0;background:var(--lime);transition:height .42s cubic-bezier(.2,.8,.2,1);overflow:hidden}.water:before{content:"";position:absolute;left:-20%;top:-9px;width:140%;height:18px;background:rgba(255,255,255,.46);border-radius:50%;animation:wave 3s ease-in-out infinite alternate}.water span{position:absolute;right:13px;bottom:12px;font-size:62px;font-weight:950;letter-spacing:-.07em;opacity:.2}@keyframes wave{to{transform:translateX(7%) scaleY(.65)}}.hole-layer{position:absolute;inset:0;pointer-events:none}.hole-layer i{position:absolute;width:13px;height:13px;border-radius:50%;background:#181816;box-shadow:0 0 0 5px rgba(24,24,22,.08);animation:popHole .28s cubic-bezier(.2,1.7,.3,1)}.hole-layer i:after{content:"";position:absolute;left:5px;top:10px;width:3px;height:35px;border-radius:50%;background:linear-gradient(var(--lime),transparent);animation:drip 1.2s ease-in infinite}@keyframes popHole{from{transform:scale(0)}to{transform:scale(1)}}@keyframes drip{0%{opacity:0;transform:translateY(0)}30%{opacity:.8}100%{opacity:0;transform:translateY(35px)}}.bucket-zone>p{margin:14px 0 0;font-size:12px;font-weight:900;letter-spacing:.08em}.check-panel{padding-top:30px}.section-head{display:flex;align-items:end;justify-content:space-between;gap:18px;margin-bottom:18px}.section-head p{margin:0 0 5px;font-size:12px;font-weight:950;letter-spacing:.15em;color:#666}.section-head h2{margin:0;font-size:clamp(26px,3vw,40px);letter-spacing:-.04em}.section-head>strong{font-size:20px}.leak-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.leak-card{position:relative;min-height:116px;text-align:left;padding:17px 18px;border:1px solid var(--line);border-radius:18px;background:rgba(255,255,255,.58);color:var(--ink);cursor:pointer;transition:.16s ease;overflow:hidden}.leak-card:hover{transform:translateY(-2px);border-color:#222}.leak-card.selected{background:#171715;color:#fff;border-color:#171715;transform:translateY(-1px)}.leak-number{display:block;font-size:12px;font-weight:950;letter-spacing:.14em;opacity:.5;margin-bottom:12px}.leak-card strong{display:block;font-size:15px;line-height:1.45;padding-right:24px}.leak-state{display:block;margin-top:10px;font-size:12px;font-weight:900;color:#777}.leak-card.selected .leak-state{color:var(--lime)}.leak-card.selected:after{content:"✓";position:absolute;right:15px;top:13px;color:var(--lime);font-weight:950;font-size:18px}.safety-note{margin:14px 0 0;padding:16px 18px;border-left:5px solid var(--danger);background:#fff0ed;border-radius:10px;display:grid;gap:5px}.safety-note[hidden]{display:none}.safety-note strong{font-size:13px}.safety-note span{font-size:12px;line-height:1.65;color:#6f4840}.primary,.secondary{width:100%;min-height:58px;border-radius:15px;font-weight:950;cursor:pointer;margin-top:20px}.primary{border:0;background:var(--ink);color:#fff;box-shadow:0 10px 26px rgba(17,17,17,.18)}.primary:not(:disabled):active{transform:translateY(1px)}.primary:disabled{background:#ccc8bd;color:#777;box-shadow:none;cursor:not-allowed}.secondary{border:1px solid var(--line);background:transparent;color:var(--ink)}.under-note{text-align:center;color:#77746d;font-size:12px;margin:10px 0 0}.back-button{min-height:44px;border:0;background:transparent;padding:0;margin:0 0 26px;font-size:12px;font-weight:900;cursor:pointer}.recommendation-stack{display:grid;gap:12px;margin-top:30px}.recommendation{position:relative;text-align:left;border:1px solid var(--line);background:rgba(255,255,255,.58);border-radius:22px;padding:22px;cursor:pointer;transition:.17s}.recommendation:hover{transform:translateY(-2px);box-shadow:var(--shadow)}.recommendation.best{border:2px solid #111;background:#fff}.rank-row{display:flex;align-items:center;justify-content:space-between;gap:12px}.rank-row span{font-size:12px;font-weight:950;letter-spacing:.1em;background:var(--lime);padding:6px 8px;border-radius:99px}.rank-row small{font-size:12px;color:#777;font-weight:850}.recommendation h2{font-size:clamp(24px,3vw,36px);letter-spacing:-.045em;margin:15px 0 8px}.recommendation>p{margin:0;color:#5e5b54;font-size:12px;line-height:1.75}.if-preview{display:grid;grid-template-columns:44px 1fr;gap:5px 10px;margin-top:18px;padding-top:15px;border-top:1px solid var(--line);align-items:start}.if-preview span{font-size:12px;font-weight:950;letter-spacing:.12em}.if-preview strong{font-size:12px;line-height:1.5}.why-order{margin-top:15px;border-top:1px solid var(--line);padding-top:14px}.why-order summary{cursor:pointer;font-size:12px;font-weight:900}.why-order p{font-size:12px;line-height:1.7;color:#666}.plug-board{margin-top:30px;background:#161614;color:#fff;border-radius:28px;padding:25px;box-shadow:var(--shadow)}.plug-target{display:flex;justify-content:space-between;gap:20px;padding-bottom:18px;border-bottom:1px solid rgba(255,255,255,.16)}.plug-target span{font-size:12px;letter-spacing:.13em;color:#aaa;font-weight:900}.plug-target strong{text-align:right;font-size:13px}.plan-field{display:block;margin-top:21px}.plan-field span{display:block;color:var(--lime);font-size:12px;font-weight:950;letter-spacing:.13em;margin-bottom:8px}.plan-field input{width:100%;min-height:58px;border:1px solid rgba(255,255,255,.22);border-radius:13px;background:#262623;color:#fff;padding:0 15px;font-weight:850;outline:none}.plan-field input:focus{border-color:var(--lime);box-shadow:0 0 0 3px rgba(216,255,91,.14)}.down-arrow{text-align:center;color:var(--lime);font-size:24px;padding-top:18px}.rule-preview{margin-top:22px;padding:17px;border:1px dashed rgba(216,255,91,.55);border-radius:13px}.rule-preview>span{font-size:12px;color:#aaa;font-weight:900;letter-spacing:.12em}.rule-preview p{margin:8px 0 0;line-height:1.7;font-size:15px}.return-card{display:grid;grid-template-columns:1fr auto;gap:16px;align-items:center;margin-bottom:24px;padding:18px 20px;background:#171715;color:#fff;border-radius:20px}.return-card[hidden]{display:none}.return-copy{display:grid;gap:5px}.mini-label{font-size:12px;font-weight:950;letter-spacing:.14em;color:var(--lime)}.return-copy strong{font-size:17px}.return-copy p{margin:0;font-size:12px;color:#d4d2ca;line-height:1.55}.return-copy small{font-size:12px;color:#999}.return-actions{display:flex;gap:7px}.compact-primary,.compact-ghost{min-width:70px;min-height:42px;border-radius:11px;font-size:12px;font-weight:950;cursor:pointer}.compact-primary{background:var(--lime);color:#111;border:0}.compact-ghost{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.25)}.result-card{width:min(620px,100%);margin:30px auto 0;background:#171715;color:#fff;border-radius:28px;padding:25px;box-shadow:var(--shadow);overflow:hidden;position:relative}.result-card:after{content:"";position:absolute;width:180px;height:180px;border-radius:50%;border:30px solid rgba(216,255,91,.12);right:-80px;top:-80px}.result-top,.result-bottom{display:flex;justify-content:space-between;gap:16px;align-items:center}.result-top{font-size:12px;font-weight:950;letter-spacing:.12em;color:#aaa}.result-top strong{font-size:18px;color:var(--lime)}.result-label{margin:34px 0 5px;font-size:12px;color:#999;font-weight:900}.result-card h2{font-size:clamp(28px,5vw,46px);line-height:1;letter-spacing:-.055em;margin:0 0 26px;max-width:75%}.result-rule{display:grid;grid-template-columns:50px 1fr;gap:5px 12px;border-top:1px solid rgba(255,255,255,.13);border-bottom:1px solid rgba(255,255,255,.13);padding:18px 0}.result-rule span{font-size:12px;color:var(--lime);font-weight:950;letter-spacing:.12em}.result-rule p{font-size:13px;margin:0;line-height:1.5}.result-rule i{grid-column:1/3;text-align:center;color:#777;font-style:normal}.result-bottom{padding-top:18px;font-size:12px;color:#aaa}.result-bottom strong{font-size:14px;color:#fff}.done-actions{width:min(620px,100%);margin:0 auto}.four-week{width:min(620px,100%);margin:18px auto 0;padding:18px;border:1px solid var(--line);border-radius:16px;display:grid;gap:5px}.four-week>span{font-size:12px;letter-spacing:.13em;font-weight:950}.four-week strong{font-size:15px}.four-week p{margin:0;font-size:12px;color:#666;line-height:1.6}.evidence{margin-top:70px;border-top:1px solid var(--line);padding-top:18px}.evidence summary{cursor:pointer;font-size:12px;font-weight:900}.evidence-body{max-width:760px;padding-top:12px}.evidence-body p{font-size:12px;line-height:1.8;color:#605e58}.source-links{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}.source-links a{font-size:12px;font-weight:850;border:1px solid var(--line);padding:7px 9px;border-radius:99px;text-decoration:none}.footer{width:min(1080px,calc(100% - 32px));margin:0 auto;padding:24px 0 34px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:16px;font-size:12px;letter-spacing:.1em;color:#777}.footer strong{color:#111}.step-title{font-size:clamp(42px,6vw,72px)}@media(max-width:760px){.shell{width:min(100% - 22px,1080px);padding-top:26px}.hero-grid{grid-template-columns:1fr;gap:24px;min-height:0}.hero-copy h1{font-size:clamp(44px,13vw,64px)}.lead{font-size:13px;line-height:1.75;margin-top:18px}.bucket-zone{padding-top:18px}.bucket-handle{width:166px;height:72px;border-width:8px}.bucket{width:222px;height:246px;border-width:9px;border-top-width:13px;border-radius:16px 16px 43px 43px}.water span{font-size:48px}.check-panel{padding-top:36px}.leak-grid{grid-template-columns:1fr}.leak-card{min-height:96px;padding:15px 16px}.leak-number{margin-bottom:8px}.recommendation{padding:18px}.return-card{grid-template-columns:1fr}.return-actions{width:100%}.return-actions button{flex:1}.plug-board,.result-card{border-radius:20px;padding:20px}.step-title{font-size:clamp(40px,12vw,58px)}.footer{width:min(100% - 22px,1080px)}}@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}