:root{color-scheme:dark;--canvas:#0d1424;--surface:#182239;--surface-2:#202e49;--line:#344766;--accent:#4cd1dc;--accent-soft:#a1f1ed;--text:#eaf2fb;--muted:#a0b3cd;--danger:#ffad9f;font-family:Inter,"Alibaba PuHuiTi 3","PingFang SC","Microsoft YaHei",system-ui,sans-serif}
*{box-sizing:border-box}html{min-height:100%;background:var(--canvas)}body{margin:0;min-height:100vh;background:radial-gradient(circle at 12% 1%,#1a3a50 0,transparent 27%),var(--canvas);color:var(--text);line-height:1.5}button,input{font:inherit}button{cursor:pointer}button:focus-visible,input:focus-visible{outline:2px solid var(--accent);outline-offset:3px}[hidden]{display:none!important}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.ambient{position:fixed;pointer-events:none;border-radius:50%;filter:blur(85px);opacity:.12;z-index:0}.ambient-one{width:360px;height:360px;background:#39d2cb;right:-160px;top:160px}.ambient-two{width:260px;height:260px;background:#3465a3;left:-120px;bottom:7%}.shell{position:relative;z-index:1;max-width:1120px;min-height:100vh;margin:auto;padding:0 30px;display:flex;flex-direction:column}.topbar{height:88px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid #2b3a55}.brand{display:flex;align-items:center;gap:13px;color:var(--accent);font-size:15px;font-weight:800;letter-spacing:.13em;white-space:nowrap}.brand b{font-weight:500;color:#83a3b9}.brand-mark{width:28px;height:28px;border:1px solid #4db8c4;border-radius:9px;display:flex;align-items:flex-end;justify-content:center;gap:3px;padding:5px}.brand-mark i{width:3px;background:var(--accent);border-radius:3px}.brand-mark i:nth-child(1){height:7px}.brand-mark i:nth-child(2){height:13px}.brand-mark i:nth-child(3){height:10px}.top-actions{display:flex;gap:16px;align-items:center}.connection{display:flex;align-items:center;gap:8px;color:var(--muted);font-size:13px}.status-dot{width:7px;height:7px;border-radius:50%;background:#7f94ac}.connection.online .status-dot{background:var(--accent);box-shadow:0 0 0 5px #4cd1dc1f}.connection.offline .status-dot{background:var(--danger)}.text-button{border:0;background:transparent;color:var(--muted);font-size:13px}.text-button:hover{color:var(--text)}main{flex:1}.intro{padding:57px 0 46px}.eyebrow{font-size:11px;letter-spacing:.2em;color:var(--accent);font-weight:800}.intro h1{font-size:clamp(36px,5.2vw,64px);line-height:1.12;letter-spacing:-.055em;margin:14px 0 17px;font-weight:750}.accent-period{color:var(--accent)}.intro p{color:var(--muted);font-size:15px;max-width:610px;margin:0}.unlock-card{border:1px solid var(--line);border-radius:22px;background:linear-gradient(140deg,#1d2b45,#172239);box-shadow:0 24px 70px #00000028;padding:28px;display:grid;grid-template-columns:58px 1fr;gap:0 20px;max-width:710px}.lock-icon{width:54px;height:54px;display:grid;place-items:center;border-radius:16px;background:#4cd1dc1a;border:1px solid #4cd1dc4d;color:var(--accent);font-size:31px}.unlock-copy h2{font-size:21px;margin:1px 0 7px}.unlock-copy p{color:var(--muted);font-size:13px;margin:0;max-width:540px}.unlock-copy code{color:#d4e5f5}.unlock-controls{grid-column:2;display:flex;gap:10px;margin-top:23px}.unlock-controls input{flex:1;min-width:0;height:46px;border:1px solid #47607d;border-radius:10px;background:#0e192b;color:var(--text);padding:0 14px}.unlock-controls input::placeholder{color:#849bb9}.primary-button,.outline-button{min-height:46px;border-radius:10px;padding:0 19px;font-weight:700;white-space:nowrap}.primary-button{border:0;color:#092232;background:var(--accent)}.primary-button:hover{background:#7ce2e8}.primary-button span{margin-left:8px}.outline-button{border:1px solid #4f6987;background:#1d2d45;color:var(--text)}.outline-button:hover{border-color:var(--accent);color:var(--accent)}.unlock-error{grid-column:2;color:var(--danger);font-size:13px;margin:12px 0 0}.overview{display:flex;align-items:end;justify-content:space-between;gap:20px;margin:0 0 22px}.overview h2{font-size:27px;letter-spacing:-.03em;margin:6px 0 4px}.subtle{color:var(--muted);font-size:13px;margin:0}.overview-actions{display:flex;align-items:center;gap:12px}.count-pill{color:#b8d5df;background:#254153;border:1px solid #3a6570;border-radius:999px;padding:8px 13px;font-size:12px;white-space:nowrap}.device-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.device-card{border:1px solid var(--line);border-radius:19px;background:linear-gradient(155deg,#1a2842,var(--surface));padding:23px;box-shadow:0 20px 50px #0000001a;min-width:0}.device-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;padding-bottom:17px;border-bottom:1px solid #344766}.device-kicker{font-size:11px;color:var(--accent);font-weight:800;letter-spacing:.14em;margin:0 0 5px}.device-title{font-size:20px;margin:0;overflow-wrap:anywhere}.device-meta{font-size:12px;color:var(--muted);margin:6px 0 0}.plan-pill{background:#4cd1dc1a;color:var(--accent-soft);border:1px solid #4cd1dc45;padding:5px 10px;border-radius:999px;font-size:11px;font-weight:800;text-transform:uppercase;white-space:nowrap}.window-list{display:grid;gap:19px;margin:20px 0 0}.quota-window{min-width:0}.window-top{display:flex;justify-content:space-between;align-items:center;gap:8px;margin-bottom:9px}.window-label{font-size:13px;color:#ccdaed}.window-value{font-size:20px;line-height:1;color:var(--accent-soft);font-weight:750;font-variant-numeric:tabular-nums}.bar{height:8px;background:#0d1829;border-radius:8px;overflow:hidden}.bar-fill{height:100%;background:linear-gradient(90deg,#39b8c9,#73e0db);border-radius:8px;min-width:0;transition:width .3s}.window-reset{color:var(--muted);font-size:11px;margin-top:7px}.device-foot{border-top:1px solid #344766;margin-top:21px;padding-top:13px;display:flex;justify-content:space-between;gap:8px;color:var(--muted);font-size:11px}.device-foot strong{color:#d5e7f4;font-weight:600}.notice,.empty-state{border:1px solid #49617d;background:#1c2b43;color:#c9daed;border-radius:13px;padding:15px 17px;margin-bottom:18px;font-size:13px}.notice.error{border-color:#915d5a;color:#ffd0c8}.empty-state{grid-column:1/-1;margin:0;padding:35px;text-align:center}.empty-state h3{margin:0 0 6px}.empty-state p{margin:0;color:var(--muted)}footer{display:flex;justify-content:space-between;gap:16px;border-top:1px solid #2b3a55;color:#7f94ac;font-size:11px;letter-spacing:.06em;padding:25px 0 30px;margin-top:48px}footer span:first-child{color:var(--accent);font-weight:800;letter-spacing:.15em}@media(max-width:720px){.shell{padding:0 18px}.topbar{height:70px}.brand{font-size:12px;letter-spacing:.09em}.brand-mark{width:25px;height:25px}.connection{font-size:11px}.intro{padding:43px 0 35px}.intro h1{font-size:39px}.intro p{font-size:13px}.unlock-card{display:block;padding:20px;border-radius:18px}.lock-icon{margin-bottom:15px}.unlock-copy h2{font-size:19px}.unlock-controls{display:grid;margin-top:19px}.unlock-controls input,.primary-button{width:100%}.overview{align-items:flex-start;flex-direction:column;gap:13px}.overview-actions{width:100%;justify-content:space-between}.overview h2{font-size:24px}.device-list{grid-template-columns:1fr}.device-card{padding:19px}.device-title{font-size:19px}footer{margin-top:34px}}@media(max-width:370px){.brand{font-size:11px}.top-actions{gap:6px}.connection{max-width:80px}.overview-actions{flex-wrap:wrap}}