*{box-sizing:border-box}html,body{margin:0;padding:0}html{-webkit-text-size-adjust:100%;-moz-text-size-adjust:100%;text-size-adjust:100%}:root{--c-bg:#f0f2f5;--c-surface:#fff;--c-surface-alt:#f1f3f4;--c-border:#dadce0;--c-text:#333;--c-text-muted:#666;--c-text-faint:#999;--c-primary:#3498db;--c-primary-dark:#2980b9;--c-primary-bg:#e8f2fb;--c-danger:#e74c3c;--c-danger-bg:#fdecea;--c-success:#27ae60;--c-success-bg:#e8f8ed;--c-dev:#c9720a;--c-dev-bg:#fdf0e0;--radius-sm:8px;--radius-md:12px;--radius-lg:18px;--shadow-sm:0 1px 2px #1418280f, 0 1px 1px #1418280a;--shadow-md:0 6px 20px #1418281a;--shadow-lg:0 12px 32px #14182829;--shell-topbar-h:56px;--shell-rail-w:56px;--shell-panel-w:340px;--font-sans:"Helvetica Neue", Arial, "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic UI", sans-serif}html,body{font-family:var(--font-sans);color:var(--c-text);background:var(--c-bg);margin:0;padding:0}.shell{background:var(--c-bg);min-height:100dvh;color:var(--c-text);font-family:var(--font-sans)}.shell-topbar{z-index:100;height:var(--shell-topbar-h);background:var(--c-surface);border-bottom:1px solid var(--c-border);align-items:center;gap:18px;padding:0 16px;display:flex;position:sticky;top:0;box-shadow:0 2px 8px #0000000d}.shell-brand{color:var(--c-primary);flex-shrink:0;align-items:center;gap:7px;text-decoration:none;display:flex}.shell-brand-mark{font-size:17px;line-height:1}.shell-brand-text{letter-spacing:.01em;white-space:nowrap;font-size:15px;font-weight:700}.shell-nav{flex:auto;align-items:center;gap:2px;min-width:0;display:flex;position:relative;overflow:hidden}.shell-nav-link{border-radius:var(--radius-sm);color:var(--c-text-muted);white-space:nowrap;align-items:center;gap:6px;padding:8px 12px;font-size:12.5px;font-weight:600;text-decoration:none;display:flex}.shell-nav-link:hover{background:var(--c-surface-alt);color:var(--c-text)}.shell-nav-link.active{background:var(--c-primary-bg);color:var(--c-primary-dark)}.shell-nav-dev-badge{color:var(--c-dev);background:var(--c-dev-bg);border-radius:999px;padding:1px 6px;font-size:9px;font-weight:700}.shell-nav-measure{visibility:hidden;pointer-events:none;white-space:nowrap;align-items:center;gap:2px;display:flex;position:absolute;top:0;left:0}.shell-nav-more{flex-shrink:0;position:relative}.shell-nav-more-btn{border-radius:var(--radius-sm);min-width:32px;height:32px;color:var(--c-text-muted);cursor:pointer;background:0 0;border:none;justify-content:center;align-items:center;padding:0 10px;font-family:inherit;font-size:14px;font-weight:700;display:flex}.shell-nav-more-btn:hover,.shell-nav-more-btn[aria-expanded=true]{background:var(--c-surface-alt);color:var(--c-text)}.shell-nav-more-menu{background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--radius-md);min-width:180px;box-shadow:var(--shadow-md);z-index:110;flex-direction:column;padding:6px;display:flex;position:absolute;top:calc(100% + 8px);left:0}.shell-nav-more-menu-item{border-radius:var(--radius-sm);color:var(--c-text-muted);white-space:nowrap;align-items:center;gap:6px;padding:9px 10px;font-size:12.5px;font-weight:600;text-decoration:none;display:flex}.shell-nav-more-menu-item:hover{background:var(--c-surface-alt);color:var(--c-text)}.shell-nav-more-menu-item.active{background:var(--c-primary-bg);color:var(--c-primary-dark)}.shell-account{flex-shrink:0;margin-left:auto;position:relative}.shell-account-btn{background:var(--c-surface-alt);border:1px solid var(--c-border);cursor:pointer;color:var(--c-text);border-radius:999px;align-items:center;gap:6px;padding:6px 10px 6px 6px;font-size:12px;font-weight:600;display:flex}.shell-account-btn:hover{background:#e9ecef}.shell-account-btn--login{background:var(--c-primary);border-color:var(--c-primary);color:#fff;padding:7px 14px}.shell-account-btn--login:hover{background:var(--c-primary-dark)}.shell-avatar{background:var(--c-primary-bg);width:22px;height:22px;color:var(--c-primary-dark);border-radius:50%;justify-content:center;align-items:center;display:flex}.shell-account-name{text-overflow:ellipsis;white-space:nowrap;max-width:120px;overflow:hidden}.shell-account-menu{background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--radius-md);min-width:200px;box-shadow:var(--shadow-md);z-index:110;padding:6px;position:absolute;top:calc(100% + 8px);right:0}.shell-account-menu-item{border-radius:var(--radius-sm);width:100%;color:var(--c-text);cursor:pointer;text-align:left;background:0 0;border:none;align-items:center;gap:8px;padding:9px 10px;font-family:inherit;font-size:12.5px;text-decoration:none;display:flex}.shell-account-menu-item:hover{background:var(--c-surface-alt)}.shell-account-menu-note{color:var(--c-text-faint);padding:8px 10px;font-size:11.5px}.shell-body{min-height:calc(100vh - var(--shell-topbar-h));min-height:calc(100dvh - var(--shell-topbar-h));align-items:stretch;display:flex}.shell-rail{top:var(--shell-topbar-h);height:calc(100vh - var(--shell-topbar-h));height:calc(100dvh - var(--shell-topbar-h));width:var(--shell-rail-w);background:var(--c-surface);border-right:1px solid var(--c-border);z-index:97;flex-direction:column;flex-shrink:0;align-self:flex-start;align-items:center;gap:4px;padding:14px 6px;display:flex;position:sticky}.shell-rail-btn{border-radius:var(--radius-sm);width:100%;color:var(--c-text-muted);cursor:pointer;background:0 0;border:none;flex-direction:column;align-items:center;gap:4px;padding:9px 2px;display:flex}.shell-rail-btn:hover{background:var(--c-surface-alt);color:var(--c-text)}.shell-rail-btn.active{background:var(--c-primary-bg);color:var(--c-primary-dark)}.shell-rail-label{letter-spacing:.01em;white-space:nowrap;font-size:9px;font-weight:600}.shell-panel-backdrop{top:var(--shell-topbar-h);left:var(--shell-rail-w);z-index:90;opacity:0;pointer-events:none;background:#14182847;transition:opacity .15s;position:fixed;bottom:0;right:0}.shell-panel-backdrop.is-open{opacity:1;pointer-events:auto}.shell-panel{top:var(--shell-topbar-h);left:var(--shell-rail-w);height:calc(100vh - var(--shell-topbar-h));height:calc(100dvh - var(--shell-topbar-h));width:min(var(--shell-panel-w), calc(100vw - var(--shell-rail-w)));background:var(--c-surface);border-right:1px solid var(--c-border);box-shadow:var(--shadow-lg);z-index:93;opacity:0;pointer-events:none;flex-direction:column;transition:transform .18s,opacity .15s;display:flex;position:fixed;transform:translate(-100%)}.shell-panel.is-open{opacity:1;pointer-events:auto;transform:translate(0)}.shell-panel-header{border-bottom:1px solid var(--c-border);flex-shrink:0;justify-content:space-between;align-items:center;padding:14px 16px;font-size:13px;font-weight:700;display:flex}.shell-panel-close{background:var(--c-surface-alt);cursor:pointer;width:26px;height:26px;color:var(--c-text-muted);border:none;border-radius:50%;justify-content:center;align-items:center;display:flex}.shell-panel-close:hover{color:var(--c-text);background:#e9ecef}.shell-panel-body{flex:1;padding:16px;overflow-y:auto}.shell-main{flex:1;min-width:0;padding:22px 24px 100px}.shell-fab{z-index:98;background:var(--c-primary);color:#fff;cursor:pointer;box-shadow:var(--shadow-lg);border:none;border-radius:999px;align-items:center;gap:8px;padding:14px 20px;font-size:13px;font-weight:700;display:flex;position:fixed;bottom:26px;right:26px}.shell-fab:hover{background:var(--c-primary-dark)}.shell-fab:disabled{cursor:not-allowed;box-shadow:var(--shadow-sm);background:#b7c1d6}.shell-fab.danger{background:var(--c-danger)}.shell-footer{border-top:1px solid var(--c-border);text-align:center;padding:22px 24px 28px}.shell-footer-nav{flex-wrap:wrap;justify-content:center;gap:4px 18px;margin-bottom:8px;display:flex}.shell-footer-nav a{color:var(--c-text-muted);font-size:12px;text-decoration:none}.shell-footer-nav a:hover{color:var(--c-text);text-decoration:underline}.shell-footer-copy{color:var(--c-text-faint);margin:0;font-size:11px}.surface-card{background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);padding:20px}.btn-primary{border-radius:var(--radius-sm);background:var(--c-primary);color:#fff;cursor:pointer;border:none;align-items:center;gap:6px;padding:10px 18px;font-size:12.5px;font-weight:700;text-decoration:none;display:inline-flex}.btn-primary:hover{background:var(--c-primary-dark)}.btn-primary:disabled{cursor:not-allowed;background:#b7c1d6}.btn-secondary{border:1px solid var(--c-border);border-radius:var(--radius-sm);background:var(--c-surface);color:var(--c-text);cursor:pointer;align-items:center;gap:6px;padding:9px 16px;font-size:12.5px;font-weight:600;text-decoration:none;display:inline-flex}.btn-secondary:hover{background:var(--c-surface-alt)}.badge{border-radius:999px;align-items:center;gap:4px;padding:3px 9px;font-size:10.5px;font-weight:700;display:inline-flex}.badge-success{background:var(--c-success-bg);color:var(--c-success)}.badge-muted{background:var(--c-surface-alt);color:var(--c-text-muted)}.badge-dev{background:var(--c-dev-bg);color:var(--c-dev)}.empty-state{color:var(--c-text-faint);text-align:center;flex-direction:column;align-items:center;gap:8px;padding:32px 16px;font-size:12px;display:flex}.saved-list{flex-direction:column;gap:8px;display:flex}.saved-list-item{border:1px solid var(--c-border);border-radius:var(--radius-sm);background:var(--c-surface-alt);align-items:center;gap:8px;padding:10px 12px;display:flex}.saved-list-item-title{text-overflow:ellipsis;white-space:nowrap;flex:1;min-width:0;font-size:12px;font-weight:600;overflow:hidden}.saved-list-item-actions{flex-shrink:0;gap:4px;display:flex}.icon-btn{width:26px;height:26px;color:var(--c-text-muted);cursor:pointer;background:0 0;border:none;border-radius:50%;justify-content:center;align-items:center;display:flex}.icon-btn:hover{color:var(--c-text);background:#e7eaf2}.icon-btn.danger:hover{background:var(--c-danger-bg);color:var(--c-danger)}@media (width<=860px){.shell-brand-text,.shell-account-name{display:none}}@media (width<=640px){.shell-main{padding:16px 14px 110px}.shell-fab-label{display:none}.shell-fab{padding:14px;bottom:16px;right:16px}}