:root{--bg:#eef4f8;--surface:#ffffff;--fg:#0b2545;--muted:#4f6479;--line:#d3e0ea;--accent:#ff6a3d;--accent-text:#b93d0b;--soft:#f6f9fb;color-scheme:light}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font-family:Inter,system-ui,-apple-system,sans-serif;line-height:1.6}
.intro{max-width:72rem;margin:0 auto;padding:3rem 16px 1rem;text-align:center}
.intro h1{margin:0}
.hero-logo{display:block;margin:0 auto;width:min(70vw,20rem);height:auto}
.intro .tag{font-size:clamp(1rem,2.2vw,1.25rem);color:var(--muted);margin:.5rem 0 0}
.wrap{max-width:72rem;margin:0 auto;padding:1rem 16px 4rem}
.sec{font-size:.8rem;font-weight:600;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin:2.5rem 0 .75rem}
.card{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:1.1rem 1.2rem}
.card h3{margin:0;font-size:1.25rem;letter-spacing:-.01em}
.card p{margin:.25rem 0 0;color:var(--muted);font-size:.95rem}
.soon{color:var(--muted)}
.pill{display:inline-block;font-size:.75rem;font-weight:600;letter-spacing:.02em;border-radius:999px;padding:.1rem .55rem;background:var(--soft);border:1px solid var(--line);color:var(--muted);vertical-align:middle}
.pill.on{background:#fff1e8;border-color:#ffd2bf;color:var(--accent-text)}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(16rem,1fr));gap:.9rem}
.rows{list-style:none;margin:.8rem 0 0;padding:0;border-top:1px solid var(--line)}
.rows li{display:flex;justify-content:space-between;align-items:baseline;gap:1rem;padding:.55rem 0;border-bottom:1px solid var(--line)}
.rows li:last-child{border-bottom:0}
.num{font-variant-numeric:tabular-nums;color:var(--muted);font-size:.9rem;white-space:nowrap}
.start{list-style:none;margin:0;padding:0}
.start li{margin:.45rem 0}
.note{font-size:.9rem;color:var(--muted)}
.feat{display:block;text-decoration:none;color:var(--fg);padding:1.4rem 1.5rem;border-width:1px;transition:border-color .15s}
.feat:hover{border-color:var(--accent)}
.feat:visited{color:var(--fg)}
.ft{display:block;font-size:clamp(1.5rem,4vw,2.1rem);font-weight:700;letter-spacing:-.02em;line-height:1.15;margin:.5rem 0 .4rem}
.fs{display:block;color:var(--muted)}
.ftop{display:block;margin-top:.6rem;font-size:.92em;line-height:1.5}
.fu{display:block;margin-top:.9rem;font-weight:600;color:var(--accent-text)}
.log{list-style:none;margin:0;padding:0;border-left:2px solid var(--line)}
.log li{display:flex;gap:1rem;padding:.4rem 0 .4rem 1rem;position:relative}
.log li::before{content:"";position:absolute;left:-6px;top:.95rem;width:10px;height:10px;border-radius:50%;background:var(--accent)}
.log li.soon::before{background:var(--bg);border:2px solid var(--line);width:6px;height:6px}
.log time,.log .when{flex:none;width:5.5rem;font-size:.9rem;color:var(--muted);font-variant-numeric:tabular-nums}
.pair{display:grid;grid-template-columns:1.2fr 1fr;gap:.9rem;align-items:stretch}
.pair.cov{grid-template-columns:1.4fr 1fr}
.pair figure{margin:0;padding:.75rem;overflow:hidden}
.pair svg{display:block;width:100%;height:auto}
.feat{display:flex;flex-direction:column;justify-content:center;align-items:flex-start}
.logc{display:flex;flex-direction:column;justify-content:center}
.logc .note{margin:1rem 0 0}
@media (max-width:720px){.pair,.pair.cov{grid-template-columns:1fr}}
.pair figure{margin:0}
.cov-card{margin:0;padding:0;overflow:hidden;position:relative}
.v3-us .st,.v4-us .st{fill:#d9e4ec}
.land{fill:#fff;stroke:#c9d8e4;stroke-width:.8}
.water{fill:#dcebf5}
.st{fill:#e3ecf3;stroke:#fff;stroke-width:.8}
.st-fl{fill:#ffd9c9;stroke:#fff;stroke-width:.8;transition:fill .15s}
.zoom-box{fill:none;stroke:var(--accent-text);stroke-width:2}
.zoom-line{stroke:var(--accent-text);stroke-width:1.2;stroke-dasharray:3 3;fill:none;opacity:.7}
.cp{cursor:pointer;transition:fill .15s,stroke-width .15s}
.cp-live{fill:rgba(255,106,61,.28);stroke:var(--accent);stroke-width:1.6}
.cp-live:hover,.cp-live.on{fill:rgba(255,106,61,.5);stroke-width:2.4}
.cp-next .nx{fill:#fff;stroke:var(--muted);stroke-width:2.5}
.cp-next:hover .nx{stroke:var(--fg);stroke-width:3}
.cp-ctx{fill:none;stroke:#b8c9d6;stroke-width:1}
.lbl{font:700 14px Inter,system-ui,sans-serif;fill:var(--fg);paint-order:stroke;stroke:#fff;stroke-width:4px;stroke-linejoin:round;pointer-events:none}
.lbl-s{font:500 11.5px Inter,system-ui,sans-serif;fill:var(--muted);paint-order:stroke;stroke:#fff;stroke-width:3.5px;stroke-linejoin:round;pointer-events:none}
.lbl-ctx{font:600 12px Inter,system-ui,sans-serif;fill:#7d93a6;letter-spacing:.06em;text-transform:uppercase;paint-order:stroke;stroke:#fff;stroke-width:3px;pointer-events:none}
.lbl-water{font:italic 500 12px Inter,system-ui,sans-serif;fill:#6f97b5;letter-spacing:.08em}
.tip{position:absolute;z-index:5;pointer-events:none;background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:.55rem .75rem;box-shadow:0 8px 24px rgba(11,37,69,.14);font-size:.9rem;line-height:1.35;opacity:0;transform:translateY(4px);transition:opacity .12s,transform .12s;max-width:16rem}
.tip.show{opacity:1;transform:none}
.tip b{display:block}
.tip span{color:var(--muted)}
.cap{display:flex;flex-wrap:wrap;gap:.4rem 1.2rem;align-items:center;padding:.8rem 1.1rem;border-top:1px solid var(--line);font-size:.9rem;color:var(--muted)}
.key{display:inline-flex;align-items:center;gap:.45rem}
.key i{display:inline-block;width:14px;height:14px;border-radius:4px}
.key .k-live{background:rgba(255,106,61,.35);border:1.5px solid var(--accent)}
.key .k-next{width:12px;height:12px;border-radius:50%;background:#fff;border:2.5px solid var(--muted)}
.cap a{margin-left:auto;font-weight:600;color:var(--accent-text)}
.ml{width:100%;background:#dcebf5}
.ml .maplibregl-ctrl-attrib{font-size:11px}
.mk{display:flex;flex-direction:column;align-items:flex-start;gap:0;font:700 14px Inter,system-ui,sans-serif;color:var(--fg);text-shadow:0 0 3px #fff,0 0 3px #fff,0 0 3px #fff;white-space:nowrap;cursor:pointer;text-decoration:none}
.mk small{font-weight:500;font-size:12px;color:var(--muted)}
.maplibregl-popup-content{border-radius:10px;padding:.65rem .85rem;font:14px/1.4 Inter,system-ui,sans-serif;color:var(--fg);box-shadow:0 8px 24px rgba(11,37,69,.16)}
.maplibregl-popup-content a{color:var(--accent-text);font-weight:600}
.v4{display:grid;grid-template-columns:1fr 1.35fr;align-items:center}
.v4-l{padding:1.2rem;position:relative}
.v4-l svg{display:block;width:100%;height:auto}
.v4-l p{margin:0 0 .8rem;font-size:.9rem;color:var(--muted)}
.v4-l p b{color:var(--fg)}
.v4 .ml{height:430px;border-left:1px solid var(--line)}
.v4-lines{position:absolute;inset:0;pointer-events:none;z-index:4;overflow:visible}
.v4 .cap{grid-column:1/-1}
@media (max-width:720px){.v4{grid-template-columns:1fr}.v4 .ml{height:380px;border-left:0;border-top:1px solid var(--line)}.v4-l{padding:.9rem .9rem .6rem}}