:root{--color-bg: #b5f0b2;--color-navbar: #0a663f;--color-accent: #a6de05;--color-profile-btn: rgba(0, 0, 0, .1);--color-cat-strip: rgba(255, 255, 255, .3);--color-footer: #0d1117;--color-text: #1a1a1a;--color-text-inv: #ffffff;--color-card: #ffffff;--color-card-hover: #f0fff0;--color-border: rgba(0, 0, 0, .1);--color-overlay: rgba(0, 0, 0, .55);--color-danger: #e53e3e;--color-danger-light: #fff5f5;--color-muted: #6b7280;--color-link: #2563eb;--color-star: #f6ad55;--color-progress-bg: rgba(0, 0, 0, .12);--color-input-bg: #f9fff9;--color-input-border: rgba(0, 0, 0, .2);--radius-card: 10px;--radius-pill: 999px;--navbar-height: 66px;--cat-strip-height: 48px;--shadow-card: 0 2px 8px rgba(0, 0, 0, .1);--shadow-dropdown: 0 8px 24px rgba(0, 0, 0, .18);--transition-fast: .15s ease}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{font-family:system-ui,-apple-system,Segoe UI,Helvetica,Arial,sans-serif;background:var(--color-bg);color:var(--color-text);line-height:1.5;min-height:100vh}a{text-decoration:none;color:inherit}img{display:block;max-width:100%}button{cursor:pointer;border:none;background:none;font-family:inherit;font-size:inherit}input,textarea{font-family:inherit;font-size:inherit}.layout{display:flex;flex-direction:column;min-height:100vh}.main-content{flex:1;padding-top:var(--navbar-height)}.container{width:100%;max-width:1280px;margin:0 auto;padding:0 16px}.spinner{width:40px;height:40px;border:4px solid var(--color-border);border-top-color:var(--color-navbar);border-radius:50%;animation:spin .7s linear infinite;margin:80px auto}@keyframes spin{to{transform:rotate(360deg)}}.prose{max-width:760px;margin:0 auto;padding:48px 16px}.prose h1{font-size:2rem;font-weight:700;margin-bottom:8px}.prose-updated{color:var(--color-muted);font-size:.875rem;margin-bottom:32px}.prose h2{font-size:1.2rem;font-weight:600;margin-top:32px;margin-bottom:8px}.prose p{margin-bottom:16px;color:#374151;line-height:1.75}.prose a{color:var(--color-navbar);text-decoration:underline}.prose ul{margin:8px 0 16px 24px;color:#374151;line-height:1.75}.profile-dropdown{position:absolute;top:calc(var(--navbar-height) - 4px);right:0;width:300px;background:var(--color-card);border-radius:var(--radius-card);box-shadow:var(--shadow-dropdown);z-index:150;overflow:hidden}.pd-header{display:flex;align-items:center;gap:12px;padding:16px;border-bottom:1px solid var(--color-border)}.pd-avatar{width:52px;height:52px;border-radius:50%;overflow:hidden;background:var(--color-accent);display:flex;align-items:center;justify-content:center;font-size:1.3rem;font-weight:700;color:var(--color-text);flex-shrink:0;cursor:pointer}.pd-avatar img{width:100%;height:100%;object-fit:cover}.pd-header-info{flex:1;min-width:0}.pd-name{font-weight:700;font-size:1rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;margin-bottom:4px}.pd-header-stats{display:flex;align-items:center;gap:12px;font-size:.85rem;font-weight:600}.pd-streak{display:flex;align-items:center;gap:4px;color:#e05c00}.pd-tokens{display:flex;align-items:center;gap:4px;color:#b8860b}.pd-stat-icon{width:16px;height:16px;flex-shrink:0}.pd-level{padding:14px 16px;border-bottom:1px solid var(--color-border)}.pd-level-top{position:relative;z-index:1;display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}.pd-level-label{display:flex;align-items:center;gap:6px;font-size:.9rem;font-weight:700;color:var(--color-text)}.pd-level-info-icon{width:16px;height:16px;opacity:.5;cursor:help}.pd-progress-wrap{position:relative}.pd-xp-callout{position:absolute;bottom:calc(100% + 3px);transform:translate(-50%);display:flex;flex-direction:column;align-items:center;pointer-events:none;z-index:0}.pd-xp-callout-text{background:var(--color-accent);color:var(--color-text);font-size:.7rem;font-weight:700;padding:2px 8px;border-radius:5px;white-space:nowrap}.pd-xp-callout:after{content:"";width:0;height:0;border-left:4px solid transparent;border-right:4px solid transparent;border-top:4px solid var(--color-accent)}.pd-progress-track{height:14px;background:var(--color-progress-bg);border-radius:var(--radius-pill);overflow:hidden}.pd-progress-fill{height:100%;background:var(--color-accent);border-radius:var(--radius-pill);transition:width .4s ease}.pd-xp-range{display:flex;justify-content:space-between;font-size:.72rem;color:var(--color-muted);margin-top:5px}.pd-nav{padding:6px 0;border-bottom:1px solid var(--color-border)}.pd-nav-link{display:flex;align-items:center;gap:12px;padding:11px 16px;font-size:.875rem;font-weight:600;width:100%;text-align:left;color:#1a56db;transition:background var(--transition-fast);text-decoration:none}.pd-nav-link:hover{background:#f0f4ff}.pd-nav-icon{width:20px;height:20px;display:flex;align-items:center;justify-content:center;flex-shrink:0}.pd-nav-icon img{width:20px;height:20px}.pd-nav-text{flex:1}.pd-nav-arrow{font-size:1.2rem;color:#1a56db;font-weight:400;line-height:1}.pd-tooltip{position:fixed;z-index:400;pointer-events:auto;width:220px}.pd-tooltip-card{background:var(--color-card);border-radius:var(--radius-card);box-shadow:var(--shadow-dropdown);padding:12px 14px}.pd-tooltip-title{display:flex;align-items:center;gap:8px;font-size:.95rem;font-weight:700;margin-bottom:6px}.pd-tooltip-icon{width:20px;height:20px;flex-shrink:0}.pd-tooltip-body{font-size:.8rem;color:var(--color-muted);line-height:1.45;margin:0}.pd-streak,.pd-tokens{cursor:pointer}.pd-signout{display:block;width:100%;text-align:left;padding:10px 16px;font-size:.875rem;color:var(--color-danger);transition:background var(--transition-fast)}.pd-signout:hover{background:var(--color-danger-light)}.navbar{position:fixed;top:0;left:0;right:0;height:var(--navbar-height);background:var(--color-navbar);display:grid;grid-template-columns:auto 1fr auto;align-items:center;padding:0 16px;gap:12px;z-index:100}.navbar-logo{display:flex;align-items:center;gap:6px;background:var(--color-accent);color:var(--color-text);font-weight:700;font-size:.95rem;height:38px;padding:0 14px 0 6px;border-radius:var(--radius-pill);white-space:nowrap;flex-shrink:0;transition:opacity var(--transition-fast);overflow:hidden}.navbar-logo:hover{opacity:.9}.navbar-logo-icon{width:30px;height:30px;border-radius:50%;flex-shrink:0}.navbar-search-wrap{display:flex;align-items:center;justify-content:center;gap:8px;width:100%;max-width:540px;margin:0 auto}.navbar-search{flex:1;position:relative}.navbar-random-btn{width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:background var(--transition-fast)}.navbar-random-btn:hover{background:#ffffff47}.navbar-search:before{content:"";position:absolute;left:12px;top:50%;transform:translateY(-50%);width:16px;height:16px;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='rgba(255,255,255,0.6)' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='11' cy='11' r='8'/%3E%3Cpath d='m21 21-4.35-4.35'/%3E%3C/svg%3E");background-size:contain;background-repeat:no-repeat;pointer-events:none;z-index:1}.navbar-search-input{width:100%;height:36px;border-radius:var(--radius-pill);border:none;padding:0 16px 0 36px;background:#ffffff26;color:var(--color-text-inv);outline:none;transition:background var(--transition-fast)}.navbar-search-input::placeholder{color:#ffffff8c}.navbar-search-input:focus{background:#ffffff40}.navbar-search-dropdown{position:absolute;top:calc(100% + 6px);left:0;right:0;background:var(--color-card);border-radius:var(--radius-card);box-shadow:var(--shadow-dropdown);overflow:hidden;z-index:200}.navbar-search-result{display:flex;align-items:center;gap:10px;padding:8px 12px;transition:background var(--transition-fast);color:var(--color-text)}.navbar-search-result:hover{background:var(--color-card-hover)}.navbar-search-thumb{width:40px;height:40px;border-radius:6px;object-fit:cover;background:var(--color-border);flex-shrink:0;display:flex;align-items:center;justify-content:center;font-size:1.25rem;overflow:hidden}.navbar-search-thumb img{width:100%;height:100%;object-fit:cover}.navbar-search-info{flex:1;min-width:0}.navbar-search-title{font-weight:600;font-size:.875rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.navbar-search-desc{font-size:.75rem;color:var(--color-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.navbar-search-seeall{display:block;text-align:right;padding:8px 14px;font-size:.8rem;font-weight:600;color:var(--color-navbar);border-top:1px solid var(--color-border);transition:background var(--transition-fast);width:100%}.navbar-search-seeall:hover{background:var(--color-card-hover)}.navbar-right{display:flex;justify-content:flex-end;position:relative}.navbar-login-btn{background:var(--color-accent);color:var(--color-text);font-weight:600;font-size:.875rem;padding:6px 16px;border-radius:var(--radius-pill);transition:opacity var(--transition-fast)}.navbar-login-btn:hover{opacity:.85}.navbar-profile-btn{display:flex;align-items:center;gap:8px;background:var(--color-profile-btn);color:var(--color-text-inv);height:var(--navbar-height);padding:0 32px 0 14px;border-radius:0;border:none;transition:background var(--transition-fast)}.navbar-profile-btn:hover{background:#0000002e}.navbar-avatar{width:32px;height:32px;border-radius:50%;overflow:hidden;background:var(--color-accent);display:flex;align-items:center;justify-content:center;font-size:.85rem;font-weight:700;color:var(--color-text);flex-shrink:0}.navbar-avatar img{width:100%;height:100%;object-fit:cover}.navbar-streak,.navbar-tokens{display:flex;align-items:center;gap:4px;font-size:.875rem;font-weight:700;color:var(--color-text-inv)}.navbar-stat-icon{width:20px;height:20px;flex-shrink:0}.footer{background:var(--color-footer);color:var(--color-text-inv);padding:48px 0 0}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:40px;padding:0 16px;max-width:1280px;margin:0 auto}@media(max-width:640px){.footer-grid{grid-template-columns:1fr;gap:28px}}.footer-brand-name{display:flex;align-items:center;gap:10px;font-size:1.15rem;font-weight:700;margin-bottom:8px;color:var(--color-accent)}.footer-brand-icon{width:44px;height:44px;border-radius:50%;flex-shrink:0}.footer-brand-desc{font-size:.825rem;color:#fff9;line-height:1.6;margin-bottom:14px}.footer-brand-email a{font-size:.825rem;color:#ffffff8c;transition:color var(--transition-fast)}.footer-brand-email a:hover{color:var(--color-text-inv)}.footer-col-title{font-size:.8rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:#ffffff73;margin-bottom:14px}.footer-links{list-style:none;display:flex;flex-direction:column;gap:8px}.footer-links a{font-size:.875rem;color:#ffffffa6;transition:color var(--transition-fast)}.footer-links a:hover{color:var(--color-text-inv)}.footer-bottom{margin-top:40px;padding:16px;border-top:1px solid rgba(255,255,255,.08);text-align:center;font-size:.8rem;color:#ffffff59}.modal-overlay{position:fixed;inset:0;background:var(--color-overlay);display:flex;align-items:center;justify-content:center;z-index:500;padding:16px}.modal-card{background:var(--color-card);border-radius:16px;padding:32px;width:100%;max-width:400px;position:relative;box-shadow:var(--shadow-dropdown)}.modal-close{position:absolute;top:12px;right:14px;font-size:1.4rem;color:var(--color-muted);line-height:1;padding:4px 6px;border-radius:6px;transition:background var(--transition-fast)}.modal-close:hover{background:var(--color-border)}.modal-title{font-size:1.35rem;font-weight:700;margin-bottom:6px}.modal-subtitle{font-size:.875rem;color:var(--color-muted);margin-bottom:24px}.auth-btn{display:flex;align-items:center;justify-content:center;gap:10px;width:100%;padding:11px 16px;border-radius:var(--radius-card);font-weight:600;font-size:.9rem;margin-bottom:10px;border:1px solid var(--color-input-border);background:var(--color-card);color:var(--color-text);transition:background var(--transition-fast),border-color var(--transition-fast)}.auth-btn:hover{background:var(--color-card-hover);border-color:var(--color-navbar)}.auth-btn-icon{font-size:1.1rem}.modal-divider{display:flex;align-items:center;gap:10px;margin:14px 0;color:var(--color-muted);font-size:.8rem}.modal-divider:before,.modal-divider:after{content:"";flex:1;height:1px;background:var(--color-border)}.modal-email-form{display:flex;flex-direction:column;gap:8px}.modal-input{width:100%;padding:10px 14px;border-radius:var(--radius-card);border:1px solid var(--color-input-border);background:var(--color-input-bg);outline:none;transition:border-color var(--transition-fast)}.modal-input:focus{border-color:var(--color-navbar)}.modal-submit-btn{padding:10px;border-radius:var(--radius-card);background:var(--color-navbar);color:var(--color-text-inv);font-weight:600;transition:opacity var(--transition-fast)}.modal-submit-btn:hover{opacity:.88}.modal-submit-btn:disabled{opacity:.55;cursor:default}.modal-error{color:var(--color-danger);font-size:.8rem;margin-top:4px}.modal-success{text-align:center;padding:12px;background:#f0fff4;border-radius:var(--radius-card);color:var(--color-navbar);font-weight:500;font-size:.9rem}.settings-field{margin-bottom:18px}.settings-label{display:block;font-size:.85rem;font-weight:600;margin-bottom:5px;color:var(--color-text)}.settings-hint{font-size:.75rem;color:var(--color-muted);margin-top:3px}.settings-error{color:var(--color-danger);font-size:.8rem;margin-top:8px}.settings-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:24px}.settings-cancel-btn{padding:9px 18px;border-radius:var(--radius-card);border:1px solid var(--color-input-border);font-weight:600;transition:background var(--transition-fast)}.settings-cancel-btn:hover{background:var(--color-card-hover)}.settings-save-btn{padding:9px 18px;border-radius:var(--radius-card);background:var(--color-navbar);color:var(--color-text-inv);font-weight:600;transition:opacity var(--transition-fast)}.settings-save-btn:hover{opacity:.88}.settings-save-btn:disabled{opacity:.55;cursor:default}