.mobile-page .phone{background:linear-gradient(to bottom,#e3f2fd,#f5f7fa 25% 100%);display:flex;flex-direction:column}.nav-bar{height:44px;display:flex;align-items:center;justify-content:space-between;padding:0 var(--mobile-padding)}.nav-title{font-size:17px;font-weight:var(--fw-bold);color:#111827}.nav-icon{width:24px;height:24px;display:flex;align-items:center;justify-content:center;cursor:pointer}.nav-icon svg{width:22px;height:22px;stroke:#111827;fill:none;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round}.mp-pill{display:flex;align-items:center;background:#ffffffb8;border:1px solid rgba(17,24,39,.08);border-radius:16px;padding:4px 10px;gap:8px}.mp-pill .divider{width:1px;height:14px;background:#1118271a}.mp-pill svg{width:16px;height:16px;stroke:#111827;fill:none;stroke-width:2}.filter-row{display:flex;gap:8px;padding:8px var(--mobile-padding) 10px;overflow-x:auto;-ms-overflow-style:none;scrollbar-width:none}.filter-row::-webkit-scrollbar{display:none}.filter-chip{display:inline-flex;align-items:center;gap:4px;white-space:nowrap;background:#fff;border:1px solid var(--border);border-radius:var(--radius-md);color:var(--text-secondary);font-size:var(--font-sm);padding:6px 10px}.filter-chip svg{width:12px;height:12px;stroke:var(--text-muted);fill:none;stroke-width:2}.history-list{flex:1;overflow-y:auto;padding:0 var(--mobile-padding) 96px}.history-card{background:#fff;border-radius:14px;box-shadow:0 8px 22px #0f172a14;padding:14px 14px 12px;margin-bottom:12px}.record-time{display:inline-flex;align-items:center;gap:6px;font-size:12px;color:var(--text-muted);margin-bottom:10px}.record-time .dot{width:8px;height:8px;border-radius:50%;background:#3b82f6}.record-main{display:flex;gap:12px;align-items:flex-start}.record-info{flex:1;min-width:0}.book-cover-mock{width:52px;height:68px;border-radius:10px;flex-shrink:0;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:16px;box-shadow:inset 0 1px #ffffff2e}.subject-yuwen{background:linear-gradient(165deg,#7c9dff,#5f7de8)}.subject-shuxue{background:linear-gradient(165deg,#aeb8c9,#8d98aa)}.subject-yingyu{background:linear-gradient(165deg,#ff9f74,#f17f52)}.homework-name{color:#111827;font-size:15px;font-weight:700;line-height:1.45}.remark{color:var(--text-muted);font-size:12px;margin-top:6px;line-height:1.45}.status-line{margin-top:8px;display:inline-flex;align-items:center;flex-wrap:wrap;gap:6px;font-size:12px;color:var(--text-secondary);background:#f8fafc;border-radius:9px;padding:5px 8px}.status-line.warning{color:#d97706;background:#fff8eb}.status-tag{font-weight:600}.status-hint{margin-top:6px;font-size:12px;color:#64748b;line-height:1.45}.card-actions{margin-top:12px;display:flex;align-items:center;gap:8px}.action-btn{flex:1;text-align:center;color:#0f172a;background:#f8fafc;border:1px solid #e2e8f0;border-radius:12px;min-height:44px;display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:var(--fw-medium);cursor:pointer;transition:background-color .2s ease,border-color .2s ease,color .2s ease}.action-btn.primary{color:#1d4ed8;background:#eff6ff;border-color:#bfdbfe}.history-card.paper-card{background:#fffffffa;border-radius:18px;border:1px solid rgba(229,236,245,.92);box-shadow:0 14px 32px #243c7014}.paper-cover{width:84px;height:108px;border-radius:14px;position:relative;overflow:hidden;flex-shrink:0;background:#f7fbff;border:1px solid rgba(223,232,243,.92);box-shadow:inset 0 1px #ffffffdb}.paper-cover:before,.paper-cover:after{content:"";position:absolute;pointer-events:none}.paper-cover.math:before{inset:0 auto auto 0;width:100%;height:40px;background:linear-gradient(135deg,#fff 0 58%,#6ed7ff 58% 100%)}.paper-cover.math:after{left:0;right:0;bottom:22px;height:32px;background:linear-gradient(135deg,transparent 0 16%,#2ec5f5 16% 100%)}.paper-cover.school:before,.paper-cover.yuwen:before{inset:auto 0 0;height:54px;background:linear-gradient(180deg,#2abdd8,#36d0d0)}.paper-cover.school:after,.paper-cover.yuwen:after{left:10px;right:10px;bottom:12px;height:26px;border-radius:18px 18px 8px 8px;border:2px solid rgba(255,255,255,.78)}.paper-cover .cover-brand,.paper-cover .cover-main,.paper-cover .cover-sub{position:absolute;z-index:1}.paper-cover .cover-brand{top:8px;left:8px;right:8px;color:#64748b;font-size:8px;font-weight:var(--fw-semibold);line-height:1.25}.paper-cover .cover-main{left:10px;bottom:36px;font-size:24px;line-height:1;color:#1d4ed8;font-weight:800;letter-spacing:1px}.paper-cover .cover-sub{right:10px;bottom:8px;color:#5e6d7f;font-size:10px;line-height:1.2;font-weight:var(--fw-medium);text-align:right}.paper-cover.school .cover-main,.paper-cover.yuwen .cover-main{left:12px;top:36px;bottom:auto;font-size:18px;color:#1f2937;letter-spacing:0}.paper-cover.school .cover-sub,.paper-cover.yuwen .cover-sub{right:auto;left:12px;bottom:34px;color:#f8fafc;font-size:9px;line-height:1.2;text-align:left}.record-meta{margin-top:8px;display:flex;gap:12px;flex-wrap:wrap;font-size:12px;color:#7a8699}.record-meta strong{margin-left:4px;color:#344256;font-weight:var(--fw-semibold)}.record-tags{margin-top:8px;display:flex;flex-wrap:wrap;gap:6px}.record-tag{display:inline-flex;align-items:center;padding:5px 10px;border-radius:999px;background:#f3f6fb;color:#607086;font-size:11px;line-height:1;border:1px solid rgba(222,230,240,.92)}.record-tag.primary{color:#2563eb;background:#eef4ff;border-color:#bfdbfee6}.record-publisher{margin-top:8px;font-size:12px;color:#56657b;line-height:1.45}.toast{position:absolute;left:50%;bottom:110px;transform:translate(-50%) translateY(12px);background:#0f172aeb;color:#fff;border-radius:999px;font-size:12px;padding:8px 14px;opacity:0;transition:all .22s ease;pointer-events:none;z-index:20;white-space:nowrap}.toast.show{opacity:1;transform:translate(-50%) translateY(0)}.empty-wrap{display:none;height:100%;align-items:center;justify-content:center;flex-direction:column;color:var(--text-muted);gap:10px;padding-bottom:120px}.empty-wrap svg{width:78px;height:78px;stroke:#d1d5db;fill:none;stroke-width:1.6}.floating-action-bar{position:absolute;left:0;right:0;bottom:0;background:#fff;padding:12px var(--mobile-padding) 34px;box-shadow:0 -2px 10px #0000000a}.btn-submit{width:100%;border:none;border-radius:28px;padding:14px 0;font-size:17px;font-weight:var(--fw-medium);color:#fff;background:linear-gradient(90deg,#4facfe,#00f2fe);display:inline-flex;align-items:center;justify-content:center;gap:6px;cursor:pointer}.btn-submit svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:2}