Exit code: 0
Wall time: 0.2 seconds
Total output lines: 1637
Output:
* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif; color: #333; }
:where(a, button, input, select, textarea):focus-visible { outline: 3px solid rgba(99, 102, 241, .55); outline-offset: 3px; }
.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; }
.skip-link { position: fixed; top: 10px; left: 10px; z-index: 5000; padding: 9px 13px; color: #fff; background: #4338ca; border-radius: 8px; transform: translateY(-160%); transition: transform .2s; }
.skip-link:focus { transform: translateY(0); }
body {
    position: relative;
    min-height: 100vh;
    overflow-x: hidden;
}
body::before {
    content: "";
    position: fixed;
    inset: 0;
    background-image: var(--bg, url("../static/images/5cc166b9137d2.jpg"));
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    z-index: -2;
}
body::after {
    content: "";
    position: fixed;
    inset: 0;
    background: linear-gradient(135deg, rgba(30, 41, 59, 0.55), rgba(79, 70, 229, 0.45));
    z-index: -1;
}

.app { display: flex; min-height: 100vh; }

.sidebar {
    width: 220px;
    background: rgba(17, 24, 39, 0.85);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    color: #fff;
    position: sticky;
    top: 0;
    height: 100vh;
    display: flex;
    flex-direction: column;
    padding: 22px 14px;
    box-shadow: 2px 0 20px rgba(0, 0, 0, 0.25);
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 700;
    padding: 6px 10px 18px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
    margin-bottom: 14px;
}
.logo-icon { font-size: 26px; }

.nav { display: flex; flex-direction: column; gap: 6px; flex: 1; }
.nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 14px;
    color: rgba(255, 255, 255, 0.75);
    text-decoration: none;
    border-radius: 10px;
    font-size: 15px;
    transition: all 0.25s;
}
.nav-item:hover { background: rgba(255, 255, 255, 0.08); color: #fff; }
.nav-item.active {
    background: linear-gradient(135deg, #4f46e5, #6366f1);
    color: #fff;
    box-shadow: 0 6px 16px rgba(99, 102, 241, 0.35);
}
.nav-icon { font-size: 18px; width: 22px; text-align: center; }

.sidebar-footer {
    padding: 12px 10px 4px;
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    font-size: 12px;
    color: rgba(255, 255, 255, 0.5);
    text-align: center;
}

.main {
    flex: 1;
    padding: 30px 40px 80px;
    overflow-y: auto;
    min-width: 0;
    max-width: 1680px;
    margin-inline: auto;
}

.welcome-hero {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 14px;
    padding: 10px 16px 12px;
    margin-bottom: 18px;
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.1);
    position: relative;
    overflow: hidden;
}
.welcome-hero::before {
    content: "";
    position: absolute;
    top: -40px; right: -40px;
    width: 120px; height: 120px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.15), transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}
.welcome-title {
    font-size: 16px;
    color: #1e293b;
    margin-bottom: 6px;
    position: relative;
    font-weight: 700;
}
.tool-search { position: relative; display: flex; align-items: center; max-width: 680px; height: 42px; margin: 4px 0 10px; border: 1px solid #dbe3f0; border-radius: 12px; background: #fff; box-shadow: 0 3px 10px rgba(15, 23, 42, .06); transition: border-color .2s, box-shadow .2s; }
.tool-search:focus-within { border-color: #6366f1; box-shadow: 0 0 0 4px rgba(99, 102, 241, .12); }
.tool-search-icon { padding: 0 10px 0 14px; color: #64748b; font-size: 23px; line-height: 1; }
.tool-search input { flex: 1; min-width: 0; height: 100%; color: #1e293b; border: 0; outline: 0; background: transparent; font: inherit; font-size: 14px; }
.tool-search input::placeholder { color: #94a3b8; }
.tool-search kbd { margin-right: 9px; padding: 3px 6px; border: 1px solid #dbe3f0; border-bottom-width: 2px; border-radius: 5px; color: #64748b; background: #f8fafc; font: 11px/1.1 inherit; white-space: nowrap; }
.tool-search-clear { width: 28px; height: 28px; margin-right: 6px; color: #64748b; border: 0; border-radius: 50%; background: transparent; font-size: 21px; cursor: pointer; }
.tool-search-clear:hover { color: #334155; background: #eef2ff; }
.tool-search-status { min-height: 16px; margin: -5px 0 6px; color: #64748b; font-size: 12px; }
.recent-tools { display:flex; align-items:center; flex-wrap:wrap; gap:8px; min-height:28px; margin:-2px 0 2px; color:#64748b; font-size:12px; }
.recent-tools > span { flex-shrink:0; }
.recent-tools-list, #recent-tools-list { display:flex; flex-wrap:wrap; gap:6px; }
.recent-tool-chip { max-width:145px; overflow:hidden; padding:5px 9px; border:1px solid #dbe3f0; border-radius:999px; color:#475569; background:#fff; text-decoration:none; text-overflow:ellipsis; white-space:nowrap; transition:.2s; }
.recent-tool-chip:hover { border-color:#a5b4fc; color:#4338ca; background:#eef2ff; }
.search-empty { display: flex; flex-direction: column; align-items: center; gap: 7px; padding: 50px 20px; border-radius: 18px; color: #64748b; background: rgba(255, 255, 255, .92); text-align: center; box-shadow: 0 8px 30px rgba(0, 0, 0, .1); }
.search-empty div { font-size: 36px; }
.search-empty strong { color: #334155; font-size: 16px; }
.search-empty span { font-size: 13px; }

.info-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 18px;
}
.info-item {
    flex: 1 1 240px;
    display: flex;
    align-items: center;
    gap: 12px;
    background: linear-gradient(135deg, #fff, #f8fafc);
    padding: 14px 18px;
    border-radius: 14px;
    border: 1px solid #e2e8f0;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
}
.info-icon {
    font-size: 26px;
    width: 46px;
    height: 46px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #eef2ff, #ddd6fe);
    border-radius: 12px;
}
.info-label { font-size: 12px; color: #64748b; margin-bottom: 2px; }
.info-value { font-size: 17px; font-weight: 600; color: #1e293b; }
.quote {
    font-size: 16px;
    color: #4f46e5;
    font-style: italic;
    margin-top: 6px;
    padding-left: 14px;
    border-left: 3px solid #6366f1;
    position: relative;
}

.tool-section {
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: 20px;
    padding: clamp(22px, 2vw, 28px);
    margin-bottom: 24px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
    scroll-margin-top: 20px;
}
.section-title {
    font-size: clamp(19px, 1.35vw, 22px);
    color: #1e293b;
    margin-bottom: 18px;
    padding-bottom: 10px;
    border-bottom: 2px solid #e2e8f0;
}

.tool-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 240px));
    grid-auto-rows: minmax(138px, auto);
    justify-content: center;
    gap: clamp(12px, 1vw, 18px);
}
.tool-card {
    display: flex;
    width: 100%;
    min-height: 138px;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    padding: 17px 14px;
    background: linear-gradient(135deg, #ffffff, #f8fafc);
    border-radius: 14px;
    border: 1px solid #e2e8f0;
    color: #334155;
    transition: all 0.3s;
    cursor: pointer;
    text-align: center;
}
.tool-card-wrapper { position:relative; display:flex; min-width:0; min-height:138px; }
.tool-card-wrapper .tool-card { flex:1; height:auto; }
.favorite-toggle { position:absolute; z-index:2; top:9px; right:9px; width:31px; height:31px; border:1px solid #e2e8f0; border-radius:50%; color:#94a3b8; background:rgba(255,255,255,.94); font-size:16px; line-height:1; cursor:pointer; opacity:0; transition:opacity .2s,transform .2s,color .2s; }
.tool-card-wrapper:hover .favorite-toggle,.favorite-toggle:focus { opacity:1; }
.favorite-toggle[aria-pressed="true"] { opacity:1; color:#f59e0b; border-color:#fde68a; background:#fffbeb; }
.favorite-toggle:hover { transform:scale(1.08); }
.tool-card:hover {
    transform: translateY(-4px);
    border-color: #6366f1;
    box-shadow: 0 12px 28px rgba(99, 102, 241, 0.18);
    background: linear-gradient(135deg, #eef2ff, #ffffff);
}
.tool-icon { font-size: 38px; margin-bottom: 8px; line-height: 1; }
.tool-name { font-size: 16px; font-weight: 600; color: #1e293b; margin-bottom: 6px; }
.tool-desc { font-size: 12.5px; color: #64748b; line-height: 1.5; }

.page-footer {
    text-align: center;
    padding: 20px;
    color: rgba(255, 255, 255, 0.85);
    font-size: 13px;
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto !important; }
    *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}

/* Floating chat button */
.floating-btn {
    position: fixed;
    right: 28px;
    bottom: 28px;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, #4f46e5, #6366f1);
    color: #fff;
    border: none;
    cursor: pointer;
    font-size: 24px;
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.5);
    transition: all 0.3s;
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: center;
}
.floating-btn:hover {
    transform: scale(1.08) rotate(-8deg);
    box-shadow: 0 12px 36px rgba(99, 102, 241, 0.7);
}
.floating-btn::after {
    content: "";
    position: absolute;
    inset: -6px;
    border-radius: 50%;
    border: 2px solid rgba(99, 102, 241, 0.5);
    animation: pulse 2s infinite;
}
@keyframes pulse {
    0% { transform: scale(0.9); opacity: 1; }
    100% { transform: scale(1.25); opacity: 0; }
}

/* Chat modal (WeChat style) */
.chat-modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.45);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.25s;
}
.chat-modal[hidden] { display: none !important; }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

.chat-panel {
    width: 420px;
    max-width: 92vw;
    height: 580px;
    max-height: 85vh;
    background: #f3f4f6;
    border-radius: 16px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    animation: slideUp 0.3s;
}
@keyframes slideUp {
    from { opacity: 0; transform: translateY(30px) scale(0.95); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}
.chat-header {
    background: #07c160;
    color: #fff;
    padding: 14px 18px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.chat-title { display: flex; align-items: center; gap: 12px; }
.chat-avatar {
    width: 40px; height: 40px;
    background: #fff;
    border-radius: 8px;
    display: flex; align-items: center; justify-content: center;
    font-size: 22px;
}
.chat-name { font-size: 15px; font-weight: 600; }
.chat-sub { font-size: 12px; opacity: 0.9; margin-top: 2px; }
.chat-close {
    background: transparent;
    border: none;
    color: #fff;
    font-size: 20px;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 6px;
    transition: background 0.2s;
}
.chat-close:hover { background: rgba(255, 255, 255, 0.2); }

.chat-messages {
    flex: 1;
    padding: 16px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
    background: #ededed;
}
.chat-messages::-webkit-scrollbar { width: 6px; }
.chat-messages::-webkit-scrollbar-thumb { background: #cbd5e1; border-radius: 3px; }

.msg {
    display: flex;
    gap: 8px;
    max-width: 78%;
    align-items: flex-end;
}
.msg.self { align-self: flex-end; flex-direction: row-reverse; }
.msg .bubble-avatar {
    width: 34px; height: 34px;
    border-radius: 6px;
    background: #6366f1;
    color: #fff;
    font-size: 18px;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
    font-weight: 700;
}
.msg.self .bubble-avatar { background: #07c160; }
.msg .bubble {
    background: #fff;
    padding: 9px 12px;
    border-radius: 10px;
    font-size: 14px;
    line-height: 1.5;
    color: #333;
    position: relative;
    word-break: break-word;
}
.msg.self .bubble { background: #95ec69; }
.msg .meta {
    font-size: 10.5px;
    color: #94a3b8;
    margin-top: 2px;
}
.msg .meta-top {
    text-align: center;
    font-size: 11px;
    color: #94a3b8;
    width: 100%;
    margin: 4px 0;
}

.chat-footer {
    background: #f7f7f7;
    padding: 12px;
    border-top: 1px solid #e5e7eb;
    display: flex;
    gap: 10px;
}
.chat-footer input {
    flex: 1;
    padding: 10px 14px;
    border: 1px solid #d1d5db;
    border-radius: 8px;
    font-size: 14px;
    outline: none;
    background: #fff;
    font-family: inherit;
}
.chat-footer input:focus { border-color: #07c160; }
.chat-footer button {
    padding: 0 18px;
    background: #07c160;
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    cursor: pointer;
    font-weight: 600;
    transition: background 0.2s;
}
.chat-footer button:hover { background: #06ad56; }

/* Tool page styles */
.tool-page {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: 20px;
    padding: 32px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
    max-width: 1000px;
    margin: 0 auto 30px;
}
.tool-page .back-link {
    display: inline-block;
    margin-bottom: 18px;
    color: #6366f1;
    text-decoration: none;
    font-size: 14px;
}
.tool-page .back-link:hover { text-decoration: underline; }
.tool-page h1 {
    font-size: 24px;
    color: #1e293b;
    margin-bottom: 8px;
}
.tool-page .desc {
    color: #64748b;
    margin-bottom: 24px;
    font-size: 14px;
}
.tool-panel {
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 18px;
}
.tool-panel textarea {
    width: 100%;
    min-height: 160px;
    padding: 12px;
    border: 1px solid #d1d5db;
    border-radius: 8px;
    font-family: "Courier New", monospace;
    font-size: 14px;
    resize: vertical;
    outline: none;
    background: #fff;
}
.tool-panel textarea:focus { border-color: #6366f1; }
.tool-panel input[type="text"],
.tool-panel input[type="number"],
.tool-panel select {
    padding: 9px 12px;
    border: 1px solid #d1d5db;
    border-radius: 8px;
    font-size: 14px;
    outline: none;
    background: #fff;
    font-family: inherit;
}
.tool-panel input[type="file"] {
    font-size: 14px;
}
.tool-panel label {
    display: block;
    font-size: 13px;
    color: #475569;
    margin-bottom: 6px;
    font-weight: 500;
}
.btn-row {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 14px;
}
.btn {
    padding: 10px 20px;
    background: linear-gradient(135deg, #4f46e5, #6366f1);
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    cursor: pointer;
    font-weight: 600;
    transition: transform 0.2s;
    font-family: inherit;
}
.btn:hover { transform: translateY(-1px); box-shadow: 0 8px 20px rgba(99, 102, 241, 0.3); }
.btn.secondary { background: linear-gradient(135deg, #64748b, #475569); }
.btn.success { background: linear-gradient(135deg, #059669, #10b981); }
.btn.warning { background: linear-gradient(135deg, #ea580c, #f97316); }

.result-box {
    background: #fff;
    border: 1px dashed #cbd5e1;
    border-radius: 10px;
    padding: 16px;
    margin-top: 16px;
    font-size: 14px;
    line-height: 1.7;
    color: #334155;
    min-height: 60px;
    word-break: break-word;
    white-space: pre-wrap;
}
.tip {
    font-size: 12.5px;
    color: #64748b;
    margin-top: 8px;
}
.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 12px;
    margin-top: 14px;
}
.stat-box {
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: 10px;
    padding: 14px;
    text-align: center;
}
.stat-box .num { font-size: 22px; font-weight: 700; color: #6366f1; }
.stat-box .label { font-size: 12px; color: #64748b; margin-top: 4px; }

.preview-area {
    margin-top: 14px;
    padding: 14px;
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: 10px;
    min-height: 80px;
}
.preview-area img {
    max-width: 100%;
    border-radius: 6px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

.calc {
    max-width: 320px;
    background: #1e293b;
    border-radius: 14px;
    padding: 16px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}
.calc-display {
    background: #0f172a;
    color: #fff;
    font-size: 28px;
    padding: 18px;
    border-radius: 10px;
    text-align: right;
    margin-bottom: 12px;
    font-family: "Courier New", monospace;
    min-height: 60px;
    word-break: break-all;
}
.calc-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
}
.calc-btn {
    padding: 16px 0;
    background: #334155;
    color: #fff;
    border: none;
    border-radius: 10px;
    font-size: 17px;
    cursor: pointer;
    font-weight: 600;
    transition: background 0.15s;
}
.calc-btn:hover { background: #475569; }
.calc-btn.op { background: #6366f1; }
.calc-btn.op:hover { background: #7c7eff; }
.calc-btn.eq { background: #059669; grid-column: span 2; }
.calc-btn.eq:hover { background: #10b981; }

.timer {
    text-align: center;
    padding: 20px;
}
.timer-display {
    font-size: 72px;
    font-weight: 700;
    color: #6366f1;
    font-family: "Courier New", monospace;
    margin: 20px 0;
    letter-spacing: 3px;
}
.timer-display.running { color: #059669; }

/* 欢迎区左右布局 —— 紧凑版 */
.welcome-row {
    display: flex;
    gap: 12px;
    margin-top: 4px;
    align-items: stretch;
}
.welcome-left {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0;
    min-width: 0;
}
.welcome-right {
    flex: 1;
    min-width: 320px;
    display: flex;
    flex-direction: column;
}

/* 左侧：当前时间卡片 —— 高度 = 发送按钮高度 */
.welcome-left .info-item {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 12px;
    padding: 12px 16px;
    border: 1px solid #e2e8f0;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.03);
    display: flex;
    align-items: center;
    min-height: 72px;
    flex: 1;
}
.welcome-left .info-icon {
    font-size: 22px;
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, #eef2ff, #ddd6fe);
    border-radius: 10px;
    margin-right: 12px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.welcome-left .info-label {
    font-size: 11px;
    color: #64748b;
    margin-bottom: 2px;
    line-height: 1.2;
}
.welcome-left .info-value {
    font-size: 14px;
    font-weight: 600;
    color: #1e293b;
    line-height: 1.3;
}

.welcome-left .online-item .info-icon {
    background: linear-gradient(135deg, #d1fae5, #a7f3d0);
}
.welcome-left .online-item .info-value {
    color: #059669;
}
.welcome-left .quote {
    font-size: 12px;
    color: #6366f1;
    font-style: italic;
    padding: 4px 10px;
    border-left: 2px solid #6366f1;
    background: rgba(99, 102, 241, 0.06);
    border-radius: 0 6px 6px 0;
    margin: 4px 0 0 0;
    line-height: 1.4;
    font-weight: 500;
}

/* 快捷文件传输：按钮卡片 */
.transfer-buttons-card {
    background: #fff;
    border-radius: 12px;
    border: 1px solid #e2e8f0;
    padding: 10px 14px 12px;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.06);
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    gap: 8px;
    height: 100%;
}
.transfer-buttons-title {
    text-align: center;
    font-size: 13px;
    font-weight: 700;
    color: #4f46e5;
    margin: 0;
}
.transfer-buttons-row {
    display: flex;
    gap: 12px;
    justify-content: center;
    align-items: stretch;
    flex: 1;
}
.transfer-action-btn {
    flex: 0 0 45%;
    max-width: 180px;
    min-height: 60px;
    padding: 8px 12px;
    border: 1px solid #e2e8f0;
    border-radius: 10px;
    background: linear-gradient(135deg, #f8fafc, #f1f5f9);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.2s;
    font-family: inherit;
    text-align: left;
}
.transfer-action-btn:hover {
    background: linear-gradient(135deg, #4f46e5, #6366f1);
    color: #fff;
    border-color…489 tokens truncated…: 30px;
    height: 30px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
    line-height: 1;
    transition: all 0.2s;
}
.tfile-close:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: rotate(90deg);
}
.tfile-body {
    padding: 20px 24px 24px;
    overflow-y: auto;
}
.tfile-hint {
    text-align: center;
    color: #64748b;
    font-size: 13px;
    margin-bottom: 14px;
}
.tfile-drop {
    display: block;
    text-align: center;
    padding: 28px 20px;
    border: 2px dashed #cbd5e1;
    border-radius: 12px;
    background: #f8fafc;
    cursor: pointer;
    transition: all 0.25s;
}
.tfile-drop:hover,
.tfile-drop.drag-over {
    border-color: #6366f1;
    background: #eef2ff;
}

/* 小按钮样式（用于弹框内） */
.btn.small {
    padding: 7px 16px;
    font-size: 12px;
}
.transfer-tab {
    flex: 1;
    padding: 7px 12px;
    border: none;
    background: transparent;
    color: #64748b;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    border-radius: 7px;
    transition: all 0.25s;
    font-family: inherit;
}
.transfer-tab-icon { margin-right: 4px; }
.transfer-tab:hover { color: #4f46e5; }
.transfer-tab.active {
    background: linear-gradient(135deg, #4f46e5, #6366f1);
    color: #fff;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.transfer-pane { animation: fadeInPane 0.3s ease; }
@keyframes fadeInPane {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: translateY(0); }
}

/* 上传拖拽区 */
.transfer-drop {
    display: block;
    text-align: center;
    padding: 16px 14px;
    border: 2px dashed #cbd5e1;
    border-radius: 10px;
    background: rgba(248, 250, 252, 0.95);
    cursor: pointer;
    transition: all 0.25s;
}
.transfer-drop:hover {
    border-color: #6366f1;
    background: rgba(238, 242, 255, 0.95);
}
.transfer-drop.drag-over {
    border-color: #059669;
    background: rgba(209, 250, 229, 0.95);
}
.drop-icon {
    font-size: 36px;
    margin-bottom: 2px;
    line-height: 1;
    opacity: 0.7;
}
.drop-text {
    font-size: 13px;
    color: #475569;
    font-weight: 500;
    margin-bottom: 2px;
}
.drop-or { color: #6366f1; font-weight: 600; }
.drop-hint {
    font-size: 11px;
    color: #94a3b8;
    margin-top: 0;
}

/* 上传进度 */
.transfer-progress {
    margin-top: 10px;
    text-align: center;
}
.progress-bar {
    height: 6px;
    background: #e2e8f0;
    border-radius: 3px;
    overflow: hidden;
    margin: 0 auto 4px;
    max-width: 260px;
}
.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #4f46e5, #6366f1, #8b5cf6);
    width: 0%;
    transition: width 0.25s;
    border-radius: 3px;
}
.progress-text {
    font-size: 12px;
    color: #475569;
    font-weight: 600;
}

/* 上传结果 */
.transfer-result {
    margin-top: 10px;
    text-align: center;
    padding: 12px 10px;
    background: linear-gradient(135deg, #ecfdf5, #d1fae5);
    border-radius: 10px;
    border: 1px solid #a7f3d0;
}
.result-icon {
    font-size: 28px;
    margin-bottom: 2px;
}
.result-text {
    font-size: 12px;
    color: #065f46;
    margin-bottom: 6px;
}
.result-code {
    display: inline-block;
    font-size: 30px;
    font-weight: 800;
    letter-spacing: 8px;
    color: #4f46e5;
    padding: 4px 16px 4px 24px;
    background: #fff;
    border: 2px solid #6366f1;
    border-radius: 8px;
    margin: 2px 0 6px;
    font-family: "Courier New", monospace;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.2);
}
.result-name {
    font-size: 12px;
    color: #334155;
    margin-bottom: 2px;
}
.result-tip {
    font-size: 11px;
    color: #64748b;
    margin-top: 4px;
}

/* 接收文件 — 美化弹框布局 */
.receive-box {
    text-align: center;
    padding: 10px 8px 10px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}
.receive-row {
    align-items: center;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
}
.receive-row:not([hidden]) {
    display: flex;
}
[hidden] { display: none !important; }
.receive-row-head {
    flex-direction: column;
    gap: 6px;
    margin-top: 6px;
}
.receive-icon {
    font-size: 54px;
    margin-bottom: 0;
    line-height: 1;
    filter: drop-shadow(0 4px 10px rgba(99, 102, 241, 0.3));
}
.receive-label {
    font-size: 14px;
    color: #334155;
    margin-bottom: 0;
    font-weight: 600;
}
.receive-row-input {
    gap: 10px;
}
#receive-code,
#receive-code-input {
    font-size: 24px;
    letter-spacing: 10px;
    padding: 12px 20px 12px 20px;
    border: 2px solid #cbd5e1;
    border-radius: 12px;
    text-align: center;
    width: 240px;
    font-weight: 700;
    color: #4f46e5;
    outline: none;
    transition: all 0.25s;
    background: linear-gradient(135deg, #f8fafc, #fff);
    font-family: "Courier New", monospace;
    box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.04), 0 1px 3px rgba(0, 0, 0, 0.06);
}
#receive-code::placeholder,
#receive-code-input::placeholder {
    color: #b8b3d1;
    opacity: 1;
    font-weight: 500;
    font-size: 16px;
    letter-spacing: 2px;
}
#receive-code:focus,
#receive-code-input:focus {
    border-color: #6366f1;
    background: #fff;
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.18), 0 4px 12px rgba(99, 102, 241, 0.1);
}
.receive-row .btn {
    display: inline-block;
    margin-top: 0;
    padding: 12px 28px;
    font-size: 14px;
    font-weight: 700;
    white-space: nowrap;
    border: none;
    border-radius: 12px;
    background: linear-gradient(135deg, #4f46e5, #6366f1);
    color: #fff;
    cursor: pointer;
    transition: all 0.2s;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}
.receive-row .btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 18px rgba(99, 102, 241, 0.4);
}
.receive-msg {
    font-size: 13px;
    margin-top: 0;
    min-height: 16px;
}
.receive-row-download {
    margin-top: 8px;
    padding: 12px 18px;
    background: linear-gradient(135deg, #ecfdf5, #d1fae5);
    border-radius: 12px;
    border: 1px solid #a7f3d0;
    display: inline-flex;
    align-items: center;
    gap: 14px;
    text-align: center;
    width: fit-content;
    margin-left: auto;
    margin-right: auto;
    flex-direction: row;
}
.receive-row-download .btn.success {
    margin: 0;
    padding: 10px 22px;
    font-size: 14px;
    font-weight: 700;
    border-radius: 10px;
    background: linear-gradient(135deg, #10b981, #059669);
    color: #fff;
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s;
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.35);
}
.receive-row-download .btn.success:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 18px rgba(16, 185, 129, 0.45);
}
.receive-row-download .btn.success:disabled,
.receive-row .btn:disabled {
    cursor: not-allowed;
    opacity: 0.45;
    filter: grayscale(0.4);
    transform: none !important;
    box-shadow: none !important;
}
.receive-download-name {
    font-size: 13px;
    font-weight: 600;
    color: #065f46;
    margin-bottom: 0;
    word-break: break-all;
}

@media (max-width: 768px) {
    /* fixed 背景在移动浏览器滚动时会频繁重绘，改为普通背景减少卡顿 */
    body::before { background-attachment: scroll; }
    .app { flex-direction: column; }
    .sidebar {
        width: 100%;
        height: auto;
        position: relative;
        flex-direction: row;
        overflow-x: auto;
        padding: 12px;
    }
    .logo { display: none; }
    .sidebar-footer { display: none; }
    .nav { flex-direction: row; gap: 6px; flex: 1; }
    .nav-item { padding: 8px 12px; white-space: nowrap; font-size: 13px; }
    .main { max-width: none; margin-inline: 0; padding: 20px 14px 80px; }
    .welcome-hero { padding: 10px 12px 12px; max-height: none; }
    .welcome-title { font-size: 16px; }
    .tool-search { height: 40px; }
    .tool-search input { font-size: 13px; }
    .tool-search kbd { display: none; }
    .tool-section { padding: 20px 16px; }
    .tool-grid { grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); justify-content: stretch; gap: 12px; }
    .tool-card-wrapper { min-height: 126px; }
    .tool-card { min-height: 126px; padding: 14px 10px; }
    .favorite-toggle { opacity:1; top:7px; right:7px; }
    .tool-icon { font-size: 34px; }
    .chat-panel { height: 85vh; }
    .floating-btn { right: 18px; bottom: 18px; width: 52px; height: 52px; font-size: 22px; }
    .tools-panel { width: 92vw; height: 88vh; }
    .welcome-row { flex-direction: column; gap: 8px; }
    .welcome-right { min-width: auto; }
    .transfer-buttons-card { padding: 8px 10px; }
    .transfer-buttons-title { font-size: 12px; }
    .transfer-buttons-row { flex-direction: row; gap: 6px; }
    .transfer-action-btn { padding: 8px; gap: 8px; }
    .tbtn-icon { font-size: 20px; }
    .tbtn-main { font-size: 12px; }
    .tbtn-sub { font-size: 10px; }
    .welcome-left .info-item { padding: 5px 10px; }
    .welcome-left .info-icon { font-size: 16px; width: 24px; height: 24px; }
    .welcome-left .info-value { font-size: 12px; }
    .welcome-left .quote { font-size: 11px; padding: 3px 8px; }
    .tfile-panel { max-width: 95vw; }
    .tfile-body { padding: 16px; }
    .tfile-drop { padding: 20px 14px; }
    .drop-icon { font-size: 30px; }
    .drop-text { font-size: 12px; }
    .drop-hint { font-size: 10px; }
    .result-code { font-size: 24px; letter-spacing: 5px; padding: 4px 12px 4px 18px; }
    .receive-icon { font-size: 30px; }
    .receive-label { font-size: 12px; }
    .receive-row-input { flex-direction: row; flex-wrap: wrap; }
    #receive-code, #receive-code-input { font-size: 18px; letter-spacing: 6px; width: 140px; padding: 6px 12px 6px 18px; }
    .receive-row .btn { padding: 7px 14px; font-size: 12px; }
}

/* 工具区块悬浮弹框 */
.tools-modal {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.65);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    animation: toolsFadeIn 0.25s ease;
}
.tools-modal[hidden] { display: none !important; }
@keyframes toolsFadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}
.tools-panel {
    position: relative;
    width: 900px;
    max-width: 94vw;
    height: 80vh;
    max-height: 90vh;
    background: #f8fafc;
    border-radius: 22px;
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.35);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    animation: toolsPop 0.3s cubic-bezier(0.22, 1, 0.36, 1);
}
@keyframes toolsPop {
    from { opacity: 0; transform: translateY(20px) scale(0.96); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}
.tools-close {
    position: absolute;
    top: 16px;
    right: 18px;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: none;
    background: #e2e8f0;
    color: #475569;
    font-size: 16px;
    cursor: pointer;
    z-index: 10;
    transition: all 0.2s;
}
.tools-close:hover {
    background: #6366f1;
    color: #fff;
    transform: rotate(90deg);
}
.tools-header {
    padding: 28px 34px 20px;
    background: linear-gradient(135deg, #ffffff 0%, #eef2ff 100%);
    border-bottom: 1px solid #e2e8f0;
    flex-shrink: 0;
}
.tools-title {
    font-size: 26px;
    font-weight: 700;
    color: #1e293b;
    margin: 0 0 6px 0;
}
.tools-sub {
    font-size: 13px;
    color: #64748b;
}
.tools-body {
    flex: 1;
    overflow-y: auto;
    padding: 26px 34px 34px;
}
.tools-body .tool-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 16px;
}
.tools-body .tool-card {
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: 14px;
    padding: 22px 16px;
    text-decoration: none;
    display: block;
    text-align: center;
    color: #334155;
    transition: all 0.25s;
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.04);
}
.tools-body .tool-card:hover {
    transform: translateY(-4px);
    border-color: #6366f1;
    background: linear-gradient(135deg, #eef2ff, #ffffff);
    box-shadow: 0 12px 28px rgba(99, 102, 241, 0.22);
}
.tools-body .tool-icon { font-size: 40px; margin-bottom: 10px; }
.tools-body .tool-name {
    font-size: 15px;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 6px;
}
.tools-body .tool-desc {
    font-size: 12px;
    color: #64748b;
    line-height: 1.5;
}