
.water-hero-visual,.guide-hero-visual,.water-diagram-card,.demand-visual{background:linear-gradient(145deg,#eef7ea,#e4f4ef);border:1px solid #cadfd3;border-radius:26px;padding:18px;box-shadow:var(--shadow-sm)}
.water-hero-visual svg,.guide-hero-visual svg,.water-diagram-card svg,.demand-visual svg{display:block;width:100%;height:auto}.roof-line{fill:none;stroke:#315b49;stroke-width:10;stroke-linecap:round;stroke-linejoin:round}.roof-fill{fill:#d7b785;stroke:#6e6247;stroke-width:3}.pipe-line,.gutter-line,.overflow-line{fill:none;stroke:#2f7051;stroke-width:10;stroke-linecap:round;stroke-linejoin:round}.gutter-line{stroke-width:8}.overflow-line{stroke:#557d9b;stroke-width:6}.tank-fill{fill:#79a8bd;stroke:#315f73;stroke-width:4}.drop{fill:#8dc7e5;stroke:#315f73;stroke-width:3}.drop.small{opacity:.75}.svg-label,.tank-label,.small-label,.equation-big{font-family:Inter,system-ui,sans-serif;fill:#17392e;font-weight:800}.svg-label{font-size:18px}.small-label{font-size:15px}.tank-label{font-size:18px;fill:#fff}.equation-big{font-size:27px}.flow-arrow{fill:none;stroke:#557d9b;stroke-width:8;stroke-linecap:round}.flow-arrow:after{content:""}.garden-block{fill:#dcefd8;stroke:#4d8d62;stroke-width:4}.water-lines{stroke:#8dc7e5;stroke-width:5}.dim-line{stroke:#b86748;stroke-width:4;stroke-dasharray:8 8}.water-intro{display:grid;grid-template-columns:1.2fr .8fr;gap:20px;margin:6px 0 26px}.water-intro>div,.water-rule{background:#fff;border:1px solid var(--line);border-radius:20px;padding:22px;box-shadow:var(--shadow-sm)}.water-intro h2{font-size:2rem;margin-bottom:10px}.water-intro p{margin:0;color:var(--muted)}.water-rule{display:flex;flex-direction:column;justify-content:center;background:#17392e;color:#fff}.water-rule strong{font-family:Georgia,serif;font-size:1.55rem}.water-rule span{color:#d7e5dc}.water-tool{background:#fff;border:1px solid #c9d8cf;border-radius:26px;padding:28px;box-shadow:var(--shadow);margin:10px 0 32px}.water-tool .tool-head{display:flex;justify-content:space-between;align-items:flex-start;gap:18px;margin-bottom:20px}.water-tool .tool-head h2{font-size:2rem;margin-bottom:8px}.water-tool .tool-head p{margin:0;color:var(--muted)}.tool-chip{display:inline-flex;padding:8px 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var(--line);border-radius:12px;padding:10px 13px}.rain-equation strong,.rain-one span:last-child{background:#17392e;color:#fff;border-radius:12px;padding:10px 14px}.source-box{display:grid;gap:8px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:20px;margin:30px 0}.source-box strong{font-family:Georgia,serif;font-size:1.35rem;color:var(--forest)}.source-box a{font-weight:760}.storage-balance,.setup-checks,.demand-table{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:24px 0}.storage-balance>div,.setup-checks>div,.demand-table>div{background:#fff;border:1px solid var(--line);border-radius:15px;padding:16px}.storage-balance strong,.setup-checks strong,.demand-table strong{display:block;color:var(--forest);margin-bottom:4px}.storage-balance span,.setup-checks span,.demand-table 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