:root{--bg-1: #f6f1ea;--bg-2: #e8f2f4;--ink: #1b1b1f;--muted: #5a5f66;--accent: #ff6a3d;--accent-2: #2db9a3;--card: #ffffff;--shadow: 0 16px 40px rgba(17, 24, 39, .12)}body[data-theme=night-run]{--bg-1: #eef3ff;--bg-2: #fff2e8;--ink: #0f172a;--muted: #475569;--accent: #3b82f6;--accent-2: #f97316}body[data-theme=court]{--bg-1: #f0f7e7;--bg-2: #e7f0ff;--ink: #0b1b14;--muted: #3f5247;--accent: #22c55e;--accent-2: #2563eb}body[data-theme=gym]{--bg-1: #fff1e6;--bg-2: #f0f7ff;--ink: #1f140f;--muted: #5a4b42;--accent: #ef4444;--accent-2: #0ea5e9}*{box-sizing:border-box}body{margin:0;font-family:HarmonyOS Sans SC,Smiley Sans,Noto Sans SC,PingFang SC,Microsoft YaHei,sans-serif;color:var(--ink);background:radial-gradient(1200px 600px at 10% -10%,color-mix(in oklab,var(--accent) 25%,transparent) 0%,transparent 70%),radial-gradient(900px 500px at 90% 0%,color-mix(in oklab,var(--accent-2) 20%,transparent) 0%,transparent 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oklab,var(--accent-2) 30%,transparent));border-radius:50%}.hero-card:before{content:"";position:absolute;left:-10%;bottom:-35%;width:220px;height:220px;background:radial-gradient(circle,color-mix(in oklab,var(--accent-2) 25%,transparent) 0%,transparent 70%);border-radius:50%}.hero-header{display:flex;flex-direction:column;gap:16px;position:relative;z-index:1}.theme-banner{display:grid;gap:4px;padding:12px 14px;border-radius:16px;background:color-mix(in oklab,var(--accent) 16%,#ffffff);width:fit-content}.theme-title{font-weight:700;color:var(--ink)}.theme-desc{color:var(--muted);font-size:.9rem}.theme-switch{display:grid;gap:10px}.theme-chip{border:none;padding:10px 14px;border-radius:16px;background:#f5f5f7;text-align:left;font-weight:600;cursor:pointer;display:grid;gap:4px;transition:transform .2s ease,box-shadow .2s ease,background .2s ease}.theme-chip small{font-weight:500;color:var(--muted)}.theme-chip.active{background:color-mix(in oklab,var(--accent) 18%,#ffffff);box-shadow:0 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124px;align-items:end}.register-captcha-row .captcha-box{margin-top:30px}.register-submit{min-height:48px;font-size:1rem;letter-spacing:.02em}.captcha-row{display:grid;grid-template-columns:1fr 120px;gap:10px;align-items:center}.captcha-box{border:none;background:color-mix(in oklab,var(--accent) 18%,#ffffff);border-radius:12px;font-weight:700;cursor:pointer;padding:0;color:var(--ink);width:120px;height:44px;display:grid;place-items:center;overflow:hidden}.captcha-svg{display:block;width:100%;height:100%}.policy-row{display:grid;grid-template-columns:18px 1fr;gap:10px;align-items:start;font-size:.9rem;color:var(--muted)}.policy-link{border:none;background:none;padding:0 4px;color:var(--accent);cursor:pointer;font-weight:600}.policy-link:hover{text-decoration:underline}.token-tip{margin-top:10px;color:var(--muted);font-size:.9rem}.policy-card{width:min(640px,92vw)}.login-card{background:linear-gradient(160deg,#fff,color-mix(in oklab,var(--accent) 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#0f172a14}.hot-tab.active{background:var(--accent);color:#fff}.hot-session-board{margin-top:20px;display:grid;gap:18px}.hot-session-list{display:grid;gap:16px}.hot-session-card{background:#ffffffeb;border-radius:24px;padding:22px;box-shadow:var(--shadow);display:grid;gap:14px}.hot-session-card h3{margin:0;font-size:1.18rem}.hot-session-top{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}.hot-session-tags{display:flex;gap:8px;flex-wrap:wrap;align-items:center}.hot-owner-badge,.hot-joined-badge{display:inline-flex;align-items:center;padding:5px 10px;border-radius:999px;font-size:.8rem;font-weight:700}.hot-owner-badge{background:color-mix(in oklab,var(--accent) 14%,#ffffff);color:var(--accent)}.hot-joined-badge{background:color-mix(in oklab,var(--accent-2) 14%,#ffffff);color:color-mix(in oklab,var(--accent-2) 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.meta{display:flex;flex-wrap:wrap;gap:10px;font-size:.85rem;color:var(--muted)}.post .badge{background:color-mix(in oklab,var(--accent) 20%,transparent);color:color-mix(in oklab,var(--ink) 80%,var(--accent));padding:4px 10px;border-radius:999px;font-weight:600}.post .actions{display:flex;justify-content:space-between;align-items:center;gap:10px}.post .count{font-size:.85rem;color:var(--muted)}.empty{padding:18px;border-radius:16px;background:#fff;color:var(--muted);box-shadow:0 10px 30px #11182714}.center-card{background:var(--card);border-radius:24px;padding:24px;box-shadow:var(--shadow);display:grid;gap:20px;margin-top:28px}.settings-layout{display:grid;grid-template-columns:280px minmax(0,1fr);gap:20px;align-items:stretch;min-height:0;height:100%;overflow:hidden}.settings-sidebar{min-height:0;background:linear-gradient(180deg,#fff,#f8fbff);border-radius:28px;padding:28px 20px;box-shadow:0 22px 44px 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16px}.modal.show{opacity:1;pointer-events:auto}.modal-backdrop{position:absolute;top:0;right:0;bottom:0;left:0;background:#11182766}.modal-card{position:relative;width:min(520px,92vw);background:#fff;border-radius:22px;padding:22px;box-shadow:0 24px 40px #0003;display:grid;grid-template-rows:auto 1fr;gap:16px;z-index:1;max-height:86vh;overflow:hidden;margin:auto 0}.register-modal-card{width:min(740px,94vw);padding:28px;border-radius:26px;background:radial-gradient(circle at top right,color-mix(in oklab,var(--accent) 10%,transparent),transparent 34%),linear-gradient(180deg,#fff,#fffdf9)}.session-modal-card{width:min(760px,95vw);padding:28px;border-radius:26px;background:radial-gradient(circle at top left,color-mix(in oklab,var(--accent-2) 12%,transparent),transparent 36%),linear-gradient(180deg,#fff,#fbfcff)}.modal-header{display:flex;justify-content:space-between;align-items:center}.modal-header-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}.modal-header 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