/* ========== 设计令牌 ========== */
:root {
    color-scheme: light;

    /* 界面透明度：由个人中心的滑块控制（100% 即现在这样完全不透明）。
       面板颜色写成 rgb(r g b / alpha)，改这一个值就能让所有卡片一起变透。 */
    --ui-alpha: 100%;

    --color-primary: #5a67d8;
    --color-primary-dark: #4c51bf;
    --color-primary-soft: #eef1ff;
    --color-success: #2f855a;
    --color-success-soft: #f0fff4;
    --color-warning: #b7791f;
    --color-danger: #c53030;
    --color-danger-soft: #fff5f5;
    --gradient: linear-gradient(135deg, #5a67d8 0%, #6b46a8 100%);

    --text-strong: #1a202c;
    --text: #2d3748;
    --text-muted: #5b6b7c;
    --text-faint: #8a94a6;

    --bg: rgb(244 245 251 / var(--ui-alpha));
    --surface: rgb(255 255 255 / var(--ui-alpha));
    --surface-soft: rgb(250 251 255 / var(--ui-alpha));
    --border: #e2e8f0;
    --border-strong: #cbd5e0;
    --overlay: rgba(26, 32, 44, 0.5);

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 18px;
    --radius-pill: 999px;

    --shadow-1: 0 2px 8px rgba(26, 32, 44, 0.06);
    --shadow-2: 0 10px 30px rgba(26, 32, 44, 0.1);
    --shadow-primary: 0 10px 25px rgba(102, 126, 234, 0.35);

    --space-1: 6px;
    --space-2: 10px;
    --space-3: 16px;
    --space-4: 24px;
    --space-5: 32px;

    --transition: 0.2s ease;
    --ring: 0 0 0 4px rgba(102, 126, 234, 0.14);

    --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
}

/* 暗色主题：只覆盖颜色类令牌，布局与尺寸复用上面的定义 */
[data-theme="dark"] {
    color-scheme: dark;

    --color-primary: #8b93f8;
    --color-primary-dark: #6f78f0;
    --color-primary-soft: #232741;
    --color-success: #48bb78;
    --color-success-soft: #16281f;
    --color-warning: #f6ad55;
    --color-danger: #fc8181;
    --color-danger-soft: #2d1a1c;
    --gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);

    --text-strong: #f1f5f9;
    --text: #cbd5e0;
    --text-muted: #94a3b8;
    --text-faint: #64748b;

    --bg: rgb(14 16 22 / var(--ui-alpha));
    --surface: rgb(23 26 35 / var(--ui-alpha));
    --surface-soft: rgb(27 31 42 / var(--ui-alpha));
    --border: #262b38;
    --border-strong: #384052;
    --overlay: rgba(0, 0, 0, 0.62);

    --shadow-1: 0 2px 8px rgba(0, 0, 0, 0.35);
    --shadow-2: 0 10px 30px rgba(0, 0, 0, 0.5);
    --shadow-primary: 0 10px 25px rgba(99, 102, 241, 0.3);

    --ring: 0 0 0 4px rgba(139, 147, 248, 0.18);
}

/* ========== 界面样式（配色） ========== */
/* 只换主色与渐变；浅色 / 深色各一套。data-accent 由个人中心的「界面样式」设置 */

/* 晚霞 */
[data-accent="sunset"] {
    --color-primary: #e2622f;
    --color-primary-dark: #c8501f;
    --color-primary-soft: #fff0e8;
    --gradient: linear-gradient(135deg, #f97362 0%, #d946a0 100%);
    --shadow-primary: 0 10px 25px rgba(226, 98, 47, 0.32);
    --ring: 0 0 0 4px rgba(226, 98, 47, 0.16);
}

[data-theme="dark"][data-accent="sunset"] {
    --color-primary: #ff9066;
    --color-primary-dark: #f2743f;
    --color-primary-soft: #39231d;
    --gradient: linear-gradient(135deg, #fb7185 0%, #e0518a 100%);
    --shadow-primary: 0 10px 25px rgba(251, 113, 133, 0.28);
    --ring: 0 0 0 4px rgba(255, 144, 102, 0.18);
}

/* 大海 */
[data-accent="ocean"] {
    --color-primary: #0f8ba8;
    --color-primary-dark: #0b6e86;
    --color-primary-soft: #e6f7fb;
    --gradient: linear-gradient(135deg, #22d3ee 0%, #2563eb 100%);
    --shadow-primary: 0 10px 25px rgba(15, 139, 168, 0.32);
    --ring: 0 0 0 4px rgba(15, 139, 168, 0.16);
}

[data-theme="dark"][data-accent="ocean"] {
    --color-primary: #4cc9e8;
    --color-primary-dark: #2fb0d3;
    --color-primary-soft: #12303a;
    --gradient: linear-gradient(135deg, #22d3ee 0%, #3b82f6 100%);
    --shadow-primary: 0 10px 25px rgba(34, 211, 238, 0.26);
    --ring: 0 0 0 4px rgba(76, 201, 232, 0.18);
}

/* 森林 */
[data-accent="forest"] {
    --color-primary: #2f855a;
    --color-primary-dark: #276749;
    --color-primary-soft: #e9f7ef;
    --gradient: linear-gradient(135deg, #34d399 0%, #15803d 100%);
    --shadow-primary: 0 10px 25px rgba(47, 133, 90, 0.32);
    --ring: 0 0 0 4px rgba(47, 133, 90, 0.16);
}

[data-theme="dark"][data-accent="forest"] {
    --color-primary: #63d69b;
    --color-primary-dark: #45c186;
    --color-primary-soft: #163025;
    --gradient: linear-gradient(135deg, #34d399 0%, #059669 100%);
    --shadow-primary: 0 10px 25px rgba(52, 211, 153, 0.24);
    --ring: 0 0 0 4px rgba(99, 214, 155, 0.18);
}

/* 樱粉 */
[data-accent="sakura"] {
    --color-primary: #d1478a;
    --color-primary-dark: #b53a74;
    --color-primary-soft: #fdeef5;
    --gradient: linear-gradient(135deg, #f9a8d4 0%, #db2777 100%);
    --shadow-primary: 0 10px 25px rgba(209, 71, 138, 0.3);
    --ring: 0 0 0 4px rgba(209, 71, 138, 0.16);
}

[data-theme="dark"][data-accent="sakura"] {
    --color-primary: #f4a0cf;
    --color-primary-dark: #e97cba;
    --color-primary-soft: #351d2c;
    --gradient: linear-gradient(135deg, #f9a8d4 0%, #ec4899 100%);
    --shadow-primary: 0 10px 25px rgba(236, 72, 153, 0.26);
    --ring: 0 0 0 4px rgba(244, 160, 207, 0.18);
}

/* ========== 基础 ========== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font);
    color: var(--text);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--color-primary);
}

button {
    font-family: inherit;
}

.hidden {
    display: none !important;
}

[hidden] {
    display: none !important;
}

:focus-visible {
    outline: 3px solid rgba(102, 126, 234, 0.45);
    outline-offset: 2px;
}

/* ========== 登录 / 注册页 ========== */
.auth-body {
    background: var(--gradient);
    min-height: 100vh;
}

.auth-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: var(--space-4);
}

.auth-box {
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: var(--space-5);
    box-shadow: var(--shadow-2);
    width: 100%;
    max-width: 440px;
    animation: rise 0.45s ease both;
}

@keyframes rise {
    from { opacity: 0; transform: translateY(14px); }
    to { opacity: 1; transform: translateY(0); }
}

.auth-brand {
    text-align: center;
    margin-bottom: var(--space-4);
}

.auth-brand .brand-icon {
    font-size: 40px;
    display: block;
    margin-bottom: var(--space-2);
}

.auth-brand h1 {
    font-size: 24px;
    color: var(--text-strong);
    letter-spacing: -0.02em;
}

.auth-subtitle {
    margin-top: var(--space-1);
    color: var(--text-muted);
    font-size: 14px;
}

.tabs {
    display: flex;
    gap: 4px;
    padding: 4px;
    background: var(--bg);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-4);
}

.tab {
    flex: 1;
    padding: 11px;
    border: none;
    background: transparent;
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-weight: 600;
    color: var(--text-muted);
    cursor: pointer;
    transition: all var(--transition);
}

.tab:hover {
    color: var(--text);
}

.tab.active {
    background: var(--surface);
    color: var(--color-primary);
    box-shadow: var(--shadow-1);
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.form-group label {
    font-weight: 600;
    font-size: 14px;
    color: var(--text);
}

.form-group input,
.form-group textarea {
    padding: 12px 14px;
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-family: inherit;
    color: var(--text-strong);
    background: var(--surface);
    outline: none;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.form-group textarea {
    resize: vertical;
    min-height: 72px;
    line-height: 1.5;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-faint);
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--color-primary);
    box-shadow: var(--ring);
}

.btn-primary {
    padding: 14px;
    background: var(--color-primary);
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
}

.btn-primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-primary);
}

.btn-primary:active {
    transform: translateY(0) scale(0.99);
}

.btn-primary:disabled,
.btn-danger:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.btn-danger {
    padding: 14px;
    background: var(--color-danger);
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
}

.btn-danger:hover {
    filter: brightness(1.06);
}

.form-message {
    display: none;
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    text-align: center;
    font-size: 14px;
}

.form-message.show {
    display: block;
}

.form-message.error {
    background: var(--color-danger-soft);
    color: var(--color-danger);
}

.form-message.success {
    background: var(--color-success-soft);
    color: var(--color-success);
}

/* ========== 应用外壳（顶部栏 + 底部导航） ========== */
.app-body {
    background: var(--bg);
    min-height: 100vh;
}

/* 全站页脚：友情链接 */
.app-footer {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    margin-top: var(--space-4);
    font-size: 13px;
    color: var(--text-muted);
}

.app-footer a {
    color: var(--color-primary);
    text-decoration: none;
}

.app-footer a:hover {
    text-decoration: underline;
}

.app-footer-sep {
    color: var(--text-faint);
}

.container {
    max-width: 820px;
    margin: 0 auto;
    padding: var(--space-4) var(--space-3) 48px;
}

/* 桌面宽屏上 820px 显得太窄：按屏幕宽度逐级放宽，五个页面共用这一条 */
@media (min-width: 900px) {
    .container {
        max-width: 1100px;
    }
}

@media (min-width: 1400px) {
    .container {
        max-width: 1320px;
    }
}

/* 宽屏时页面留白也收一点，内容更贴边 */
@media (min-width: 900px) {
    .container {
        padding-left: var(--space-4);
        padding-right: var(--space-4);
    }
}

.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-3);
    background: var(--surface);
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-3);
    box-shadow: var(--shadow-1);
    position: sticky;
    top: var(--space-2);
    z-index: 100;
}

.brand {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    text-decoration: none;
    color: inherit;
    flex-shrink: 0;
}

.brand .brand-icon {
    font-size: 24px;
}

.brand h1 {
    font-size: 18px;
    color: var(--text-strong);
    letter-spacing: -0.01em;
}

.app-nav {
    display: flex;
    gap: var(--space-1);
    margin-left: auto;
}

.app-nav-link {
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    color: var(--text-muted);
    text-decoration: none;
    transition: all var(--transition);
}

.app-nav-link:hover {
    color: var(--color-primary);
    background: var(--color-primary-soft);
}

.app-nav-link.active {
    color: #fff;
    background: var(--color-primary);
}

.user-info {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.avatar {
    width: 40px;
    height: 40px;
    flex-shrink: 0;
    border-radius: 50%;
    background: var(--gradient);
    color: #fff;
    font-weight: 600;
    font-size: 17px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
}

.avatar.has-emoji {
    font-size: 20px;
}

.user-meta {
    display: flex;
    flex-direction: column;
    line-height: 1.3;
    min-width: 0;
}

.user-name {
    font-weight: 600;
    font-size: 14px;
    color: var(--text-strong);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.user-sub {
    font-size: 12px;
    color: var(--text-muted);
}

.btn-ghost {
    padding: 8px 14px;
    background: transparent;
    color: var(--text-muted);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 14px;
    cursor: pointer;
    transition: all var(--transition);
    flex-shrink: 0;
}

.btn-ghost:hover {
    color: var(--color-danger);
    border-color: var(--color-danger);
    background: var(--color-danger-soft);
}

.icon-btn {
    width: 38px;
    height: 38px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border);
    background: transparent;
    border-radius: var(--radius-sm);
    font-size: 16px;
    line-height: 1;
    cursor: pointer;
    transition: all var(--transition);
}

.icon-btn:hover {
    border-color: var(--color-primary);
    background: var(--color-primary-soft);
}

.tabbar {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 500;
    display: none;
    background: var(--surface);
    border-top: 1px solid var(--border);
    padding: 6px 8px calc(6px + env(safe-area-inset-bottom));
}

.tabbar-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    padding: 6px 0;
    text-decoration: none;
    color: var(--text-muted);
    font-size: 11px;
    font-weight: 600;
    transition: color var(--transition);
}

.tabbar-item.active {
    color: var(--color-primary);
}

.tabbar-icon {
    font-size: 19px;
    line-height: 1;
}

/* ========== 卡片与主页 ========== */
.card {
    background: var(--surface);
    padding: var(--space-4);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-3);
    box-shadow: var(--shadow-1);
}

.card-title {
    font-size: 15px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: var(--space-3);
}

.card-title-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-2);
    margin-bottom: var(--space-3);
}

.card-title-row .card-title {
    margin-bottom: 0;
}

.hero {
    background: var(--gradient);
    box-shadow: var(--shadow-primary);
}

.hero .date {
    text-align: center;
    color: #ffffff;
    font-size: 15px;
    margin-bottom: var(--space-3);
}

.check-in-btn {
    width: 100%;
    padding: 22px;
    font-size: 19px;
    font-weight: 700;
    color: var(--color-primary);
    background: #fff;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition);
}

.check-in-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.18);
}

.check-in-btn:active:not(:disabled) {
    transform: translateY(0) scale(0.99);
}

.check-in-btn.checked {
    background: var(--color-success);
    color: #fff;
    cursor: default;
    animation: pop 0.3s ease;
}

@keyframes pop {
    0% { transform: scale(1); }
    50% { transform: scale(1.02); }
    100% { transform: scale(1); }
}

/* ========== 输入行 ========== */
.task-input-wrapper,
.add-friend {
    display: flex;
    gap: var(--space-2);
    margin-bottom: var(--space-3);
}

.task-input,
.text-input {
    flex: 1;
    min-width: 0;
    padding: 13px 14px;
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-family: inherit;
    color: var(--text-strong);
    background: var(--surface);
    outline: none;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.task-input::placeholder,
.text-input::placeholder {
    color: var(--text-faint);
}

.task-input:focus,
.text-input:focus {
    border-color: var(--color-primary);
    box-shadow: var(--ring);
}

.add-task-btn {
    padding: 13px 24px;
    background: var(--color-primary);
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    flex-shrink: 0;
}

.add-task-btn:hover {
    background: var(--color-primary-dark);
}

/* ========== 任务列表 ========== */
.task-list {
    list-style: none;
}

.task-item {
    display: flex;
    align-items: center;
    padding: 13px 14px;
    background: var(--bg);
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-2);
    transition: background var(--transition);
}

.task-item:hover {
    background: var(--color-primary-soft);
}

.task-check {
    position: relative;
    display: inline-flex;
    flex-shrink: 0;
    margin-right: var(--space-3);
    cursor: pointer;
}

.task-check input {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.task-checkmark {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    border: 2px solid var(--border-strong);
    position: relative;
    transition: all var(--transition);
}

.task-check input:checked + .task-checkmark {
    background: var(--color-success);
    border-color: var(--color-success);
}

.task-check input:checked + .task-checkmark::after {
    content: "";
    position: absolute;
    left: 7px;
    top: 3px;
    width: 5px;
    height: 10px;
    border: solid #fff;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.task-check input:focus-visible + .task-checkmark {
    box-shadow: var(--ring);
}

.task-text {
    flex: 1;
    font-size: 15px;
    color: var(--text);
    overflow-wrap: break-word;
}

.task-item.completed .task-text {
    text-decoration: line-through;
    color: var(--text-muted);
}

.delete-btn {
    padding: 6px 12px;
    margin-left: var(--space-2);
    background: var(--color-danger);
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 12px;
    cursor: pointer;
    opacity: 0;
    transition: opacity var(--transition), background var(--transition);
}

.task-item:hover .delete-btn,
.task-item:focus-within .delete-btn {
    opacity: 1;
}

.delete-btn:hover {
    filter: brightness(1.06);
}

/* ========== 统计 ========== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-2);
}

.stat-item {
    padding: var(--space-3) var(--space-2);
    background: var(--bg);
    border-radius: var(--radius-md);
    text-align: center;
}

.stat-icon {
    font-size: 20px;
    margin-bottom: var(--space-1);
}

.stat-number {
    font-size: 26px;
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1.1;
}

.stat-label {
    font-size: 13px;
    color: var(--text-muted);
    margin-top: var(--space-1);
}

/* ========== 分段时间控件 ========== */
.segmented {
    display: flex;
    gap: 4px;
    padding: 4px;
    background: var(--bg);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-3);
}

.segmented button {
    flex: 1;
    padding: 10px;
    border: none;
    background: transparent;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    color: var(--text-muted);
    cursor: pointer;
    transition: all var(--transition);
}

.segmented button:hover {
    color: var(--text);
}

.segmented button.active {
    background: var(--surface);
    color: var(--color-primary);
    box-shadow: var(--shadow-1);
}

/* ========== 好友动态 ========== */
.feed-item {
    padding: var(--space-3);
    background: var(--bg);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-2);
    contain: layout style paint;
}

.feed-head {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin-bottom: var(--space-2);
}

.feed-avatar {
    width: 36px;
    height: 36px;
    flex-shrink: 0;
    border-radius: 50%;
    background: var(--gradient);
    color: #fff;
    font-weight: 600;
    font-size: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.feed-avatar.has-emoji {
    font-size: 18px;
}

.feed-meta {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    line-height: 1.3;
}

.feed-name {
    font-weight: 600;
    font-size: 14px;
    color: var(--text-strong);
}

.feed-date {
    font-size: 12px;
    color: var(--text-muted);
}

.feed-content {
    font-size: 15px;
    color: var(--text);
    margin-bottom: var(--space-3);
    overflow-wrap: break-word;
    white-space: pre-wrap;
}

.feed-foot {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-2);
}

.feed-badge {
    font-size: 13px;
    color: var(--text-muted);
    background: var(--surface);
    border: 1px solid var(--border);
    padding: 4px 12px;
    border-radius: var(--radius-pill);
}

.like-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    border: 1px solid var(--border);
    background: var(--surface);
    border-radius: var(--radius-pill);
    font-size: 13px;
    color: var(--text-muted);
    cursor: pointer;
    transition: all var(--transition);
}

.like-btn:hover:not(:disabled) {
    border-color: var(--color-danger);
    color: var(--color-danger);
}

.like-btn.active {
    background: var(--color-danger-soft);
    border-color: var(--color-danger);
    color: var(--color-danger);
}

.like-btn:disabled {
    cursor: default;
    opacity: 0.7;
}

.like-btn.just-liked {
    animation: pop 0.3s ease;
}

/* ========== 动态评论 ========== */
.feed-actions {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.comment-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    border: 1px solid var(--border);
    background: var(--surface);
    border-radius: var(--radius-pill);
    font-size: 13px;
    color: var(--text-muted);
    cursor: pointer;
    transition: all var(--transition);
}

.comment-btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.comment-box {
    margin-top: var(--space-3);
    padding-top: var(--space-3);
    border-top: 1px solid var(--border);
}

.comment-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    margin-bottom: var(--space-3);
}

.comment-item {
    display: flex;
    gap: var(--space-2);
}

.comment-avatar {
    width: 28px;
    height: 28px;
    flex-shrink: 0;
    border-radius: 50%;
    background: var(--gradient);
    color: #fff;
    font-weight: 600;
    font-size: 13px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.comment-avatar.has-emoji {
    font-size: 15px;
}

.comment-main {
    flex: 1;
    min-width: 0;
}

.comment-head {
    display: flex;
    align-items: baseline;
    gap: var(--space-2);
}

.comment-author {
    font-weight: 600;
    font-size: 13px;
    color: var(--text-strong);
}

.comment-time {
    font-size: 12px;
    color: var(--text-muted);
}

.comment-del {
    margin-left: auto;
    padding: 0;
    border: none;
    background: transparent;
    color: var(--text-muted);
    font-size: 12px;
    cursor: pointer;
}

.comment-del:hover {
    color: var(--color-danger);
}

.comment-text {
    margin-top: 2px;
    font-size: 14px;
    color: var(--text);
    overflow-wrap: break-word;
    white-space: pre-wrap;
}

.comment-form {
    display: flex;
    gap: var(--space-2);
}

/* ========== 私信 ========== */
.seg-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 16px;
    height: 16px;
    margin-left: 5px;
    padding: 0 4px;
    background: var(--color-danger);
    color: #fff;
    font-size: 11px;
    font-weight: 700;
    line-height: 1;
    border-radius: var(--radius-pill);
    vertical-align: middle;
}

/* 类选择器会盖过 UA 的 [hidden]，这里显式让隐藏生效 */
.seg-badge[hidden] {
    display: none;
}

.msg-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    width: 100%;
    padding: var(--space-3);
    margin-bottom: var(--space-2);
    background: var(--bg);
    border: none;
    border-radius: var(--radius-md);
    text-align: left;
    cursor: pointer;
    transition: background var(--transition);
}

.msg-item:hover {
    background: var(--color-primary-soft);
}

.msg-avatar {
    width: 40px;
    height: 40px;
    flex-shrink: 0;
    border-radius: 50%;
    background: var(--gradient);
    color: #fff;
    font-weight: 600;
    font-size: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.msg-avatar.has-emoji {
    font-size: 20px;
}

.msg-main {
    flex: 1;
    min-width: 0;
}

.msg-name {
    font-weight: 600;
    font-size: 14px;
    color: var(--text-strong);
}

.msg-preview {
    margin-top: 2px;
    font-size: 13px;
    color: var(--text-muted);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.msg-tail {
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 4px;
}

.msg-time {
    font-size: 12px;
    color: var(--text-muted);
}

.msg-unread {
    min-width: 18px;
    height: 18px;
    padding: 0 5px;
    background: var(--color-danger);
    color: #fff;
    font-size: 11px;
    font-weight: 700;
    line-height: 18px;
    text-align: center;
    border-radius: var(--radius-pill);
}

.msg-thread-head {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding-bottom: var(--space-2);
    margin-bottom: var(--space-3);
    border-bottom: 1px solid var(--border);
}

.msg-thread-name {
    font-weight: 600;
    color: var(--text-strong);
}

.msg-thread-body {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    max-height: 55vh;
    overflow-y: auto;
    padding: var(--space-1);
    margin-bottom: var(--space-3);
}

.msg-bubble {
    align-self: flex-start;
    max-width: 78%;
    padding: var(--space-2) var(--space-3);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
}

.msg-bubble.mine {
    align-self: flex-end;
    background: var(--color-primary-soft);
    border-color: transparent;
}

.msg-text {
    font-size: 14px;
    color: var(--text);
    overflow-wrap: break-word;
    white-space: pre-wrap;
}

.msg-meta {
    margin-top: 3px;
    font-size: 11px;
    color: var(--text-muted);
}

.msg-bubble.mine .msg-meta {
    text-align: right;
}

.msg-form {
    display: flex;
    gap: var(--space-2);
}

/* 私信 / 评论头像显示上传的图片时铺满头像框 */
.msg-avatar.has-image,
.comment-avatar.has-image {
    background-size: cover;
    background-position: center;
    background-color: var(--bg);
}

/* ========== 排行榜 / 好友列表 ========== */
.lb-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3);
    background: var(--bg);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-2);
    contain: layout style paint;
}

.lb-rank {
    width: 30px;
    flex-shrink: 0;
    text-align: center;
    font-weight: 700;
    font-size: 15px;
    color: var(--text-muted);
}

.lb-rank.top {
    font-size: 21px;
}

.lb-avatar {
    width: 38px;
    height: 38px;
    flex-shrink: 0;
    border-radius: 50%;
    background: var(--gradient);
    color: #fff;
    font-weight: 600;
    font-size: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.lb-avatar.has-emoji {
    font-size: 19px;
}

.lb-main {
    flex: 1;
    min-width: 0;
}

.lb-name {
    font-weight: 600;
    font-size: 14px;
    color: var(--text-strong);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.lb-sub {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 2px;
}

.lb-score {
    flex-shrink: 0;
    text-align: right;
}

.lb-score strong {
    display: block;
    font-size: 18px;
    line-height: 1.1;
    color: var(--color-primary);
}

.lb-score span {
    font-size: 11px;
    color: var(--text-muted);
}

/* ========== 历史 ========== */
.history-item {
    padding: var(--space-3);
    background: var(--bg);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-2);
    contain: layout style paint;
}

.history-head {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: var(--space-2);
}

.history-date {
    font-weight: 600;
    color: var(--color-primary-dark);
    font-size: 14px;
}

.history-count {
    font-size: 13px;
    color: var(--text-muted);
}

.progress {
    height: 6px;
    background: var(--border);
    border-radius: var(--radius-pill);
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--gradient);
    border-radius: var(--radius-pill);
    transition: width 0.4s ease;
}

/* ========== 骨架屏 / 空状态 ========== */
.skeleton-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.skeleton {
    position: relative;
    overflow: hidden;
    background: var(--bg);
    border-radius: var(--radius-md);
}

.skeleton-row {
    height: 54px;
}

.skeleton::after {
    content: "";
    position: absolute;
    inset: 0;
    transform: translateX(-100%);
    background: linear-gradient(90deg, transparent, rgba(128, 140, 170, 0.16), transparent);
    animation: shimmer 1.3s infinite;
}

@keyframes shimmer {
    100% { transform: translateX(100%); }
}

.empty-state {
    text-align: center;
    padding: var(--space-5) var(--space-3);
}

.empty-state-icon {
    font-size: 34px;
    margin-bottom: var(--space-2);
}

.empty-state-text {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.6;
}

.empty-hint {
    text-align: center;
    color: var(--text-muted);
    font-size: 14px;
    padding: var(--space-3) 0;
}

/* ========== 个人中心 ========== */
.profile-head {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.profile-avatar {
    width: 64px;
    height: 64px;
    flex-shrink: 0;
    border-radius: 50%;
    background: var(--gradient);
    color: #fff;
    font-weight: 700;
    font-size: 26px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.profile-avatar.has-emoji {
    font-size: 30px;
}

.profile-head-meta {
    min-width: 0;
}

.profile-head-name {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-strong);
}

.profile-head-sub {
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 2px;
    word-break: break-all;
}

.profile-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.avatar-picker {
    display: grid;
    /* 按格子大小自动排：窄屏 4 列左右，宽屏一路排满整行，不再留一大片空白 */
    grid-template-columns: repeat(auto-fit, minmax(64px, 1fr));
    gap: var(--space-2);
}

.avatar-choice {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--border);
    background: var(--bg);
    border-radius: var(--radius-md);
    font-size: 30px;
    cursor: pointer;
    transition: all var(--transition);
}

.avatar-choice:hover {
    border-color: var(--color-primary);
}

.avatar-choice.active {
    border-color: var(--color-primary);
    background: var(--color-primary-soft);
    box-shadow: var(--ring);
}

.setting-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3);
    padding: var(--space-3) 0;
    border-bottom: 1px solid var(--border);
}

.setting-row:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

/* 外观设置：按钮组与透明度滑块 */
.media-actions {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    flex-shrink: 0;
}

.opacity-control {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    min-width: 170px;
}

.opacity-control input[type="range"] {
    flex: 1;
    min-width: 0;
    accent-color: var(--color-primary);
}

.opacity-value {
    min-width: 42px;
    font-size: 13px;
    color: var(--text-muted);
    text-align: right;
    font-variant-numeric: tabular-nums;
}

.setting-row:first-child {
    padding-top: 0;
}

.setting-label {
    font-size: 14px;
    font-weight: 600;
    color: var(--text);
}

.setting-desc {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 2px;
    line-height: 1.5;
}

.switch-group {
    display: flex;
    gap: 4px;
    padding: 4px;
    background: var(--bg);
    border-radius: var(--radius-sm);
    flex-shrink: 0;
}

.switch-group button {
    padding: 7px 12px;
    border: none;
    background: transparent;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-muted);
    cursor: pointer;
    transition: all var(--transition);
}

.switch-group button.active {
    background: var(--surface);
    color: var(--color-primary);
    box-shadow: var(--shadow-1);
}

/* ========== 弹窗 ========== */
.modal-overlay {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-4);
    background: var(--overlay);
    opacity: 0;
    transition: opacity 0.18s ease;
}

.modal-overlay.show {
    opacity: 1;
}

.modal-box {
    width: 100%;
    max-width: 380px;
    max-height: calc(100vh - var(--space-4) * 2);
    overflow-y: auto;
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
    box-shadow: var(--shadow-2);
    transform: translateY(8px);
    transition: transform 0.18s ease;
}

.modal-overlay.show .modal-box {
    transform: translateY(0);
}

.modal-title {
    font-size: 16px;
    color: var(--text-strong);
    margin-bottom: var(--space-2);
}

.modal-text {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: var(--space-4);
}

/* 紧跟复选框的说明文字，间距收一点 */
.modal-text.tight {
    margin-bottom: var(--space-2);
}

/* 弹窗里的「以后不再提醒」 */
.modal-check {
    display: flex;
    width: fit-content;
    margin-bottom: var(--space-3);
}

/* ========== 词条报错 ========== */
/* 报错弹窗内容比确认弹窗多，小屏上要能滚 */
.report-box {
    max-height: calc(100vh - 2 * var(--space-4));
    overflow-y: auto;
}

/* 把当前词条原样列出来，免得报到别的词上 */
.report-quote {
    padding: 10px 12px;
    margin-bottom: var(--space-3);
    background: var(--bg);
    border-radius: var(--radius-sm);
    font-size: 13px;
    overflow-wrap: break-word;
}

.report-quote-term {
    font-weight: 600;
    color: var(--text-strong);
}

.report-quote-meaning {
    margin-top: 2px;
    color: var(--text-muted);
}

.report-reasons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-1);
    margin-bottom: var(--space-3);
}

.report-reasons .preset-chip {
    padding: 6px 12px;
    font-size: 12px;
}

.report-note {
    width: 100%;
    min-height: 64px;
    padding: 8px 10px;
    margin-bottom: var(--space-3);
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text);
    font-family: inherit;
    font-size: 13px;
    line-height: 1.6;
    resize: vertical;
}

.report-note:focus {
    outline: none;
    border-color: var(--color-primary);
}

/* 修正词条弹窗：单词 / 释义两个输入框的间距 */
.report-box .report-field {
    margin-bottom: var(--space-3);
}

/* 背诵卡片翻开释义后的报错入口 */
.study-report {
    margin-top: var(--space-2);
    text-align: center;
}

/* 答题反馈区里的报错入口：跟着反馈文字走，不抢「下一题」的位置 */
.report-link {
    display: block;
    width: fit-content;
    margin: var(--space-2) auto 0;
    padding: 0;
    background: none;
    border: none;
    color: inherit;
    font-size: 12px;
    font-weight: 600;
    text-decoration: underline;
    opacity: 0.75;
    cursor: pointer;
}

.report-link:hover {
    opacity: 1;
}

/* 单词列表行里的报错，与「删除」一样平时半透明、hover 才显形 */
.report-btn {
    padding: 6px 10px;
    margin-left: var(--space-2);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 12px;
    color: var(--text-muted);
    cursor: pointer;
    opacity: 0;
    transition: opacity var(--transition), border-color var(--transition), color var(--transition);
}

.report-btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

/* ========== 图片裁剪 ========== */
.crop-box {
    max-width: 440px;
}

.crop-view {
    position: relative;
    width: 100%;
    overflow: hidden;
    border-radius: var(--radius-md);
    background: var(--bg);
    cursor: grab;
    touch-action: none;
}

.crop-view.dragging {
    cursor: grabbing;
}

.crop-img {
    position: absolute;
    max-width: none;
    user-select: none;
    -webkit-user-drag: none;
}

/* 三分线，方便对齐 */
.crop-grid {
    position: absolute;
    inset: 0;
    pointer-events: none;
    background-image:
        linear-gradient(to right, rgba(255, 255, 255, 0.35) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255, 255, 255, 0.35) 1px, transparent 1px);
    background-size: 33.333% 33.333%;
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.25);
}

.crop-zoom {
    width: 100%;
    margin-top: var(--space-3);
    accent-color: var(--color-primary);
}

.crop-hint {
    margin-top: var(--space-1);
    font-size: 12px;
    color: var(--text-muted);
    text-align: center;
}

/* ========== 自定义背景与头像 ========== */
/* 铺满视口、垫在内容下面；透明度由用户设置 */
.app-bg {
    position: fixed;
    /* 用显式的四边定位而不是 inset，兼容性更稳妥 */
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: -1;
    /* 图还没加载出来时兜个底色，不至于露黑 */
    background-color: var(--bg);
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    pointer-events: none;
    transition: opacity var(--transition);
}

/* 上传的头像图片铺满头像框 */
.avatar.has-image,
.profile-avatar.has-image {
    background-size: cover;
    background-position: center;
    background-color: var(--bg);
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: var(--space-2);
}

.modal-actions button {
    padding: 10px 18px;
    font-size: 14px;
}

/* ========== Toast ========== */
.toast-host {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1100;
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.toast {
    min-width: 200px;
    max-width: 320px;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    background: var(--surface);
    color: var(--text-strong);
    font-size: 14px;
    box-shadow: var(--shadow-2);
    border-left: 4px solid var(--color-primary);
    opacity: 0;
    transform: translateX(24px);
    transition: opacity var(--transition), transform var(--transition);
}

.toast.show {
    opacity: 1;
    transform: translateX(0);
}

.toast-success {
    border-left-color: var(--color-success);
}

.toast-error {
    border-left-color: var(--color-danger);
}

/* ========== 加载态 ========== */
.is-loading {
    position: relative;
    color: transparent !important;
    pointer-events: none;
}

.is-loading::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: 18px;
    height: 18px;
    margin: -9px 0 0 -9px;
    border: 2px solid rgba(255, 255, 255, 0.45);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}

.check-in-btn.is-loading::after {
    border-color: rgba(102, 126, 234, 0.35);
    border-top-color: var(--color-primary);
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ========== 人机验证 ========== */
.math-question {
    color: var(--color-primary-dark);
    font-weight: 700;
    font-variant-numeric: tabular-nums;
}

.math-input-row {
    display: flex;
    gap: var(--space-2);
}

.math-answer {
    flex: 1;
    min-width: 0;
}

.math-refresh {
    flex-shrink: 0;
    width: 46px;
    padding: 0;
    background: var(--bg);
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    font-size: 18px;
    line-height: 1;
    cursor: pointer;
    transition: all var(--transition);
}

.math-refresh:hover {
    color: var(--color-primary);
    border-color: var(--color-primary);
    background: var(--color-primary-soft);
}

/* ========== 小游戏推广 ========== */
.promo-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--space-3);
    background: linear-gradient(135deg, var(--color-primary-soft), var(--surface-soft));
    border: 1px solid var(--border);
}

.promo-text {
    flex: 1;
    min-width: 200px;
}

.promo-card .card-title {
    margin-bottom: var(--space-1);
}

.promo-desc {
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.6;
}

.promo-btn {
    flex-shrink: 0;
    padding: 12px 24px;
    background: var(--color-primary);
    color: #fff;
    border-radius: var(--radius-pill);
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    white-space: nowrap;
    transition: all var(--transition);
}

.promo-btn:hover {
    background: var(--color-primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-primary);
}

/* ========== 工具页：计时器 / 倒计时 ========== */
#toolTabs {
    background: var(--bg);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-1);
}

.timer-display {
    padding: var(--space-3) 0;
    text-align: center;
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 46px;
    font-weight: 700;
    letter-spacing: 0.04em;
    color: var(--text-strong);
    font-variant-numeric: tabular-nums;
}

.timer-display.danger {
    color: var(--color-danger);
}

.timer-display.done {
    color: var(--color-success);
    animation: pop 0.8s ease infinite;
}

.timer-hint {
    text-align: center;
    font-size: 13px;
    color: var(--text-muted);
}

.timer-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-top: var(--space-3);
}

.timer-actions > button {
    flex: 1;
    min-width: 96px;
}

.lap-list {
    list-style: none;
    margin-top: var(--space-3);
    max-height: 220px;
    overflow-y: auto;
}

.lap-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-2);
    padding: 8px 12px;
    margin-bottom: 6px;
    background: var(--bg);
    border-radius: var(--radius-sm);
    font-size: 13px;
    color: var(--text-muted);
    font-variant-numeric: tabular-nums;
}

.lap-total {
    font-weight: 600;
    color: var(--text-strong);
}

.lap-seg {
    color: var(--color-primary);
}

.preset-row {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-bottom: var(--space-3);
}

.preset-chip {
    padding: 8px 16px;
    border: 1px solid var(--border);
    background: var(--surface);
    border-radius: var(--radius-pill);
    font-size: 13px;
    font-weight: 600;
    color: var(--text-muted);
    cursor: pointer;
    transition: all var(--transition);
}

.preset-chip:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.preset-chip.active {
    background: var(--color-primary-soft);
    border-color: var(--color-primary);
    color: var(--color-primary);
}

/* ========== 工具页：功能选择 ========== */
/* 让四张卡片撑满可视高度，别在下面留一大片空白 */
#toolHome {
    /* 需要扣掉的高度：顶部栏 + 页面留白 + 卡片自身的内边距与标题 */
    --tool-home-offset: 230px;
    display: flex;
    flex-direction: column;
    min-height: calc(100vh - var(--tool-home-offset));
}

@supports (height: 100dvh) {
    #toolHome {
        min-height: calc(100dvh - var(--tool-home-offset));
    }
}

.tool-grid {
    flex: 1;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: repeat(2, minmax(120px, 1fr));
    gap: var(--space-3);
    margin-top: var(--space-3);
}

.tool-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    padding: var(--space-3);
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-family: inherit;
    text-align: center;
    color: var(--text);
    cursor: pointer;
    transition: all var(--transition);
}

.tool-card:hover {
    border-color: var(--color-primary);
    background: var(--color-primary-soft);
}

.tool-card:active {
    transform: scale(0.98);
}

.tool-icon {
    font-size: 42px;
    line-height: 1.1;
}

.tool-name {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-strong);
}

.tool-desc {
    font-size: 12px;
    color: var(--text-muted);
}

/* 选中的工具顶部只留「返回 + 功能名」，不再列出其它功能 */
#toolBar {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin-bottom: var(--space-3);
}

.tool-back {
    flex-shrink: 0;
}

.tool-bar-title {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-strong);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ========== 工具页：背单词 ========== */
.block-btn {
    display: block;
    width: 100%;
    margin-top: var(--space-3);
}

.word-textarea {
    padding: 12px 14px;
    min-height: 180px;
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 14px;
    line-height: 1.6;
    color: var(--text-strong);
    background: var(--surface);
    outline: none;
    resize: vertical;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.word-textarea::placeholder {
    color: var(--text-faint);
}

.word-textarea:focus {
    border-color: var(--color-primary);
    box-shadow: var(--ring);
}

.upload-row {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-bottom: var(--space-2);
}

.upload-hint {
    font-size: 12px;
    color: var(--text-muted);
    line-height: 1.5;
}

.file-input {
    display: none;
}

/* 加载转圈默认是白色的，在浅色按钮上会看不见 */
.btn-ghost.is-loading::after {
    border-color: rgba(102, 126, 234, 0.3);
    border-top-color: var(--color-primary);
}

.upload-status {
    margin-top: var(--space-2);
    padding: 10px 12px;
    background: var(--bg);
    border-radius: var(--radius-sm);
    font-size: 13px;
    line-height: 1.6;
    color: var(--text-muted);
    overflow-wrap: break-word;
}

.upload-status.ok {
    background: var(--color-success-soft);
    color: var(--color-success);
}

.upload-status.error {
    background: var(--color-danger-soft);
    color: var(--color-danger);
}

.word-textarea.drop-target {
    border-color: var(--color-primary);
    box-shadow: var(--ring);
    background: var(--color-primary-soft);
}

.btn-ghost.drop-target {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background: var(--color-primary-soft);
}

.import-bar {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-bottom: var(--space-3);
}

.import-count {
    margin-right: auto;
    font-size: 13px;
    color: var(--text-muted);
}

.btn-ghost.active {
    color: var(--color-primary);
    border-color: var(--color-primary);
    background: var(--color-primary-soft);
}

.word-preview {
    max-height: 260px;
    overflow-y: auto;
    padding: 4px 8px;
    margin-bottom: var(--space-3);
    background: var(--surface-soft);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
}

.word-preview-item {
    display: flex;
    gap: var(--space-2);
    padding: 7px 4px;
    border-bottom: 1px solid var(--border);
    font-size: 13px;
}

.word-preview-item:last-child {
    border-bottom: none;
}

.preview-term {
    flex-shrink: 0;
    max-width: 45%;
    font-weight: 600;
    color: var(--text-strong);
    overflow-wrap: break-word;
}

.preview-meaning {
    color: var(--text-muted);
    overflow-wrap: break-word;
}

.preview-meaning.empty {
    color: var(--text-faint);
    font-style: italic;
}

.word-preview-more {
    padding: var(--space-2);
    text-align: center;
    font-size: 12px;
    color: var(--text-faint);
}

.book-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: 4px 10px;
    margin-bottom: var(--space-2);
    background: var(--bg);
    border-radius: var(--radius-md);
}

.book-main {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding: 12px 6px;
    border: none;
    background: transparent;
    border-radius: var(--radius-sm);
    text-align: left;
    cursor: pointer;
}

.book-name {
    font-weight: 600;
    font-size: 15px;
    color: var(--text-strong);
    overflow-wrap: break-word;
}

.book-sub {
    font-size: 12px;
    color: var(--text-muted);
}

.book-item:hover .delete-btn,
.word-item:hover .delete-btn,
.word-item:hover .report-btn,
.book-item:focus-within .delete-btn,
.word-item:focus-within .delete-btn,
.word-item:focus-within .report-btn {
    opacity: 1;
}

.word-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-2);
    margin-bottom: var(--space-3);
}

/* ---- 背诵 ---- */
.study-progress {
    text-align: center;
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: var(--space-2);
}

.study-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 170px;
    padding: var(--space-4) var(--space-3);
    background: var(--bg);
    border: 2px dashed var(--border-strong);
    border-radius: var(--radius-lg);
    text-align: center;
    cursor: pointer;
    transition: border-color var(--transition), background var(--transition);
}

.study-card:hover {
    border-color: var(--color-primary);
}

.study-card.revealed {
    border-style: solid;
    border-color: var(--color-primary);
    background: var(--color-primary-soft);
}

.study-term {
    font-size: 28px;
    font-weight: 700;
    line-height: 1.3;
    color: var(--text-strong);
    overflow-wrap: break-word;
}

.study-meaning {
    margin-top: var(--space-3);
    font-size: 17px;
    line-height: 1.6;
    color: var(--text);
    overflow-wrap: break-word;
}

.study-tip {
    margin-top: var(--space-3);
    font-size: 13px;
    color: var(--text-faint);
}

.study-phonetic-row {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    margin-top: var(--space-1);
    min-height: 34px;
}

.study-phonetic {
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 16px;
    color: var(--text-muted);
    overflow-wrap: break-word;
}

.speak-btn {
    flex-shrink: 0;
    width: 34px;
    height: 34px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border);
    background: var(--surface);
    border-radius: 50%;
    font-size: 15px;
    line-height: 1;
    cursor: pointer;
    transition: all var(--transition);
}

.speak-btn:hover {
    border-color: var(--color-primary);
    background: var(--color-primary-soft);
}

.speak-btn:active {
    transform: scale(0.94);
}

.inline-phonetic {
    margin-left: var(--space-2);
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 13px;
}

.word-phonetic {
    margin-top: 2px;
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 12px;
    color: var(--text-muted);
    overflow-wrap: break-word;
}

.study-actions {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-2);
    margin-top: var(--space-3);
}

.study-btn {
    padding: 12px 8px;
    background: var(--surface);
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
}

.study-btn-again {
    color: var(--color-danger);
    border-color: var(--color-danger);
}

.study-btn-again:hover {
    background: var(--color-danger-soft);
}

.study-btn-vague {
    color: var(--color-warning);
    border-color: var(--color-warning);
}

.study-btn-vague:hover {
    background: var(--color-primary-soft);
}

.study-btn-known {
    color: var(--color-success);
    border-color: var(--color-success);
}

.study-btn-known:hover {
    background: var(--color-success-soft);
}

.check-inline {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 0 4px;
    font-size: 13px;
    color: var(--text-muted);
    cursor: pointer;
}

.check-inline input {
    width: 16px;
    height: 16px;
    accent-color: var(--color-primary);
}

/* ---- 汇总 ---- */
.summary-title {
    margin-bottom: var(--space-3);
    text-align: center;
    font-size: 15px;
    font-weight: 700;
    color: var(--text-strong);
}

.summary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(72px, 1fr));
    gap: var(--space-2);
}

.summary-cell {
    padding: var(--space-3) var(--space-2);
    background: var(--bg);
    border-radius: var(--radius-md);
    text-align: center;
}

.summary-value {
    font-size: 22px;
    font-weight: 700;
    line-height: 1.1;
    color: var(--color-primary);
}

.summary-label {
    margin-top: 4px;
    font-size: 12px;
    color: var(--text-muted);
}

/* ---- 考核 ---- */
.quiz-card {
    cursor: default;
}

.quiz-card:hover {
    border-color: var(--border-strong);
}

.quiz-card .study-term {
    font-size: 24px;
}

.quiz-timing {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
    margin-bottom: var(--space-2);
    font-size: 13px;
    color: var(--text-muted);
    font-variant-numeric: tabular-nums;
}

.quiz-countdown {
    font-weight: 700;
}

.quiz-countdown.danger {
    color: var(--color-danger);
}

.quiz-options {
    margin-top: var(--space-3);
}

.quiz-option {
    display: block;
    width: 100%;
    padding: 14px;
    margin-bottom: var(--space-2);
    background: var(--bg);
    border: 2px solid var(--border);
    border-radius: var(--radius-md);
    font-size: 15px;
    color: var(--text);
    text-align: left;
    cursor: pointer;
    transition: all var(--transition);
}

.quiz-option:hover:not(:disabled) {
    border-color: var(--color-primary);
    background: var(--color-primary-soft);
}

.quiz-option:disabled {
    cursor: default;
}

.quiz-option.correct {
    background: var(--color-success-soft);
    border-color: var(--color-success);
    color: var(--color-success);
    font-weight: 600;
}

.quiz-option.wrong {
    background: var(--color-danger-soft);
    border-color: var(--color-danger);
    color: var(--color-danger);
}

.quiz-spell {
    display: flex;
    gap: var(--space-2);
    margin-top: var(--space-3);
}

.quiz-feedback {
    margin-top: var(--space-3);
    padding: 12px;
    border-radius: var(--radius-sm);
    text-align: center;
    font-size: 14px;
    font-weight: 600;
}

.quiz-feedback.ok {
    background: var(--color-success-soft);
    color: var(--color-success);
}

.quiz-feedback.no {
    background: var(--color-danger-soft);
    color: var(--color-danger);
}

.wrong-list {
    margin-top: var(--space-3);
    padding-top: var(--space-3);
    border-top: 1px solid var(--border);
}

.wrong-item {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: var(--space-3);
    padding: 10px 12px;
    margin-bottom: var(--space-2);
    background: var(--bg);
    border-radius: var(--radius-sm);
    font-size: 14px;
}

.wrong-prompt {
    /* 题干（单词/释义）不被右边的答案压扁，但也不占满整行 */
    flex-shrink: 0;
    max-width: 55%;
    color: var(--text);
    overflow-wrap: break-word;
}

.wrong-answer {
    flex: 1;
    min-width: 0;
    text-align: right;
    font-weight: 600;
    color: var(--color-success);
    overflow-wrap: break-word;
}

/* ---- 单词列表 ---- */
.list-toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-bottom: var(--space-3);
}

/* ---- 搜单词：定位到词在第几页 ---- */
.word-search {
    display: flex;
    gap: var(--space-2);
    margin-bottom: var(--space-2);
}

.word-search-hint {
    margin-bottom: var(--space-3);
    font-size: 13px;
    line-height: 1.5;
    color: var(--text-muted);
    overflow-wrap: break-word;
}

.word-search-hit {
    font-weight: 600;
    color: var(--color-primary);
}

.word-list {
    list-style: none;
}

.word-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: 12px 14px;
    margin-bottom: var(--space-2);
    background: var(--bg);
    border-radius: var(--radius-sm);
}

/* 搜到的词标出来，当前这个再深一点，翻页时一眼能看到 */
.word-item.is-found {
    box-shadow: inset 0 0 0 2px var(--color-primary);
}

.word-item.is-focus {
    background: var(--color-primary-soft);
}

.word-main {
    flex: 1;
    min-width: 0;
}

.word-term {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-strong);
    overflow-wrap: break-word;
}

.word-meaning {
    margin-top: 2px;
    font-size: 13px;
    color: var(--text-muted);
    overflow-wrap: break-word;
}

.word-check {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    margin-right: var(--space-2);
    cursor: pointer;
    accent-color: var(--color-primary);
}

.status-badge {
    flex-shrink: 0;
    padding: 3px 10px;
    border: 1px solid var(--border);
    border-radius: var(--radius-pill);
    font-size: 12px;
    color: var(--text-muted);
    background: var(--surface);
}

.status-badge.status-known {
    color: var(--color-success);
    border-color: var(--color-success);
    background: var(--color-success-soft);
}

.status-badge.status-vague {
    color: var(--color-warning);
    border-color: var(--color-warning);
}

.status-badge.status-again {
    color: var(--color-danger);
    border-color: var(--color-danger);
    background: var(--color-danger-soft);
}

.status-badge.status-cleared {
    color: var(--color-primary);
    border-color: var(--color-primary);
    background: var(--color-primary-soft);
}

.pager {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-top: var(--space-3);
}

.pager-nav {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin-left: auto;
}

.pager-info {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-muted);
    white-space: nowrap;
}

.pager-btn {
    padding: 7px 14px;
    border: 1px solid var(--border);
    background: var(--surface);
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 600;
    color: var(--text-muted);
    cursor: pointer;
    transition: all var(--transition);
}

.pager-btn:hover:not(:disabled) {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background: var(--color-primary-soft);
}

.pager-btn:disabled {
    opacity: 0.45;
    cursor: not-allowed;
}

.pager-jump {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--text-muted);
    white-space: nowrap;
}

.pager-jump input {
    width: 64px;
    padding: 7px 8px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--surface);
    color: var(--text);
    font-size: 13px;
    font-family: inherit;
    text-align: center;
    outline: none;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.pager-jump input:focus {
    border-color: var(--color-primary);
    box-shadow: var(--ring);
}

/* ---- 离线字典 ---- */
.dict-result {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-1);
    min-height: 64px;
    margin-top: var(--space-2);
    text-align: center;
    font-size: 14px;
    color: var(--text-muted);
    overflow-wrap: break-word;
}

.dict-word {
    font-size: 26px;
    font-weight: 700;
    color: var(--text-strong);
    overflow-wrap: break-word;
}

.dict-phonetic-row {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
}

.dict-phonetic {
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 17px;
    color: var(--color-primary);
}

.dict-note {
    margin-top: var(--space-2);
    font-size: 13px;
    color: var(--text-faint);
}

.dict-meaning {
    width: 100%;
    margin-top: var(--space-2);
    text-align: left;
}

.dict-sense {
    padding: 6px 0;
    border-top: 1px solid var(--border);
    font-size: 14px;
    line-height: 1.7;
    color: var(--text);
    overflow-wrap: break-word;
}

.dict-sense:first-child {
    border-top: none;
}

.filter-row {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-1);
    margin-bottom: var(--space-3);
}

.filter-row button {
    padding: 6px 12px;
    border: 1px solid var(--border);
    background: var(--surface);
    border-radius: var(--radius-pill);
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
    cursor: pointer;
    transition: all var(--transition);
}

.filter-row button:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.filter-row button.active {
    background: var(--color-primary-soft);
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.select-bar {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-2);
    padding: 10px 12px;
    margin-bottom: var(--space-3);
    background: var(--surface-soft);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
}

.select-count {
    margin-right: auto;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-muted);
}

.btn-inline {
    padding: 8px 16px;
    background: var(--color-primary);
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
}

.btn-inline:hover:not(:disabled) {
    background: var(--color-primary-dark);
}

.btn-inline:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.switch-group.switch-wrap {
    flex-wrap: wrap;
    justify-content: flex-end;
}

.quiz-size-input {
    flex: 0 0 auto;
    width: 150px;
    padding: 8px 12px;
    font-size: 14px;
}

.word-delete {
    flex-shrink: 0;
}

/* ---- 学习记录 ---- */
.title-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: var(--space-1);
}

.record-day {
    margin-bottom: var(--space-3);
}

.record-day-head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: var(--space-2);
    padding: 0 2px var(--space-2);
}

.record-date {
    font-size: 14px;
    font-weight: 700;
    color: var(--text-strong);
}

.record-day-sum {
    font-size: 12px;
    color: var(--text-muted);
}

.record-sessions {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.record-item {
    background: var(--bg);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.record-head {
    width: 100%;
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: 12px;
    border: none;
    background: transparent;
    font: inherit;
    color: inherit;
    text-align: left;
    cursor: pointer;
    transition: background var(--transition);
}

.record-head:hover {
    background: var(--surface-soft);
}

.record-badge {
    flex-shrink: 0;
    padding: 3px 10px;
    border-radius: var(--radius-pill);
    font-size: 12px;
    font-weight: 600;
    color: var(--color-primary);
    background: var(--color-primary-soft);
}

.record-badge-quiz {
    color: var(--color-warning);
    background: var(--surface-soft);
    border: 1px solid var(--color-warning);
}

.record-main {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.record-book {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-strong);
    overflow-wrap: break-word;
}

.record-meta {
    font-size: 12px;
    color: var(--text-muted);
}

.record-time {
    flex-shrink: 0;
    font-size: 12px;
    color: var(--text-faint);
}

.record-words {
    padding: 0 12px 12px;
    font-size: 13px;
    color: var(--text-muted);
}

.record-word {
    display: flex;
    align-items: baseline;
    gap: var(--space-2);
    padding: 8px 10px;
    margin-bottom: var(--space-1);
    background: var(--surface);
    border-radius: var(--radius-sm);
}

.record-word:last-child {
    margin-bottom: 0;
}

.record-word-term {
    flex-shrink: 0;
    font-weight: 600;
    color: var(--text-strong);
}

.record-word-meaning {
    flex: 1;
    min-width: 0;
    overflow-wrap: break-word;
}

/* 学习记录详情页：单条记录的概览 + 逐词明细 */
.record-detail-head {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: 12px;
    background: var(--bg);
    border-radius: var(--radius-md);
}

.record-detail-sub {
    margin: var(--space-3) 0 var(--space-2);
    font-size: 13px;
    color: var(--text-muted);
}

/* 列表里的明细要跟着记录头缩进，详情页里是顶层元素，不缩进 */
.record-detail > .record-words {
    padding: 0;
}

/* ========== 个人中心：意见反馈 ========== */
.feedback-list {
    margin-top: var(--space-3);
}

.feedback-list.empty-hint {
    margin-top: var(--space-2);
}

.feedback-item {
    padding: var(--space-3);
    margin-bottom: var(--space-2);
    background: var(--bg);
    border-radius: var(--radius-md);
}

.feedback-item:last-child {
    margin-bottom: 0;
}

.feedback-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-2);
    margin-bottom: var(--space-1);
}

.feedback-time {
    font-size: 12px;
    color: var(--text-faint);
}

.feedback-delete {
    padding: 2px 10px;
    font-size: 12px;
}

.feedback-text {
    font-size: 14px;
    line-height: 1.7;
    color: var(--text);
    white-space: pre-wrap;
    overflow-wrap: break-word;
}

.feedback-contact {
    margin-top: var(--space-1);
    font-size: 12px;
    color: var(--text-muted);
    overflow-wrap: break-word;
}

/* ========== 使用说明 ========== */
.guide-toc {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-1);
    margin-top: var(--space-2);
}

.guide-toc a {
    padding: 6px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-pill);
    background: var(--surface);
    font-size: 13px;
    color: var(--text-muted);
    text-decoration: none;
    transition: all var(--transition);
}

.guide-toc a:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

/* 锚点跳转时给顶部栏留出位置，别把标题顶到看不见 */
.guide-section {
    scroll-margin-top: 84px;
}

.guide-sub {
    margin: var(--space-3) 0 var(--space-1);
    font-size: 14px;
    font-weight: 700;
    color: var(--text-strong);
}

/* 全局 reset 把 padding 清零了，列表要自己留出序号 / 圆点的位置 */
.guide-list {
    padding-left: 22px;
    font-size: 14px;
    line-height: 1.9;
    color: var(--text);
}

.guide-list li {
    margin-bottom: 6px;
}

.guide-list li::marker {
    color: var(--color-primary);
}

.guide-list code {
    padding: 1px 6px;
    border-radius: var(--radius-sm);
    background: var(--surface-soft);
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 12px;
    color: var(--text-strong);
}

.guide-note {
    margin-top: var(--space-2);
    padding: 10px 12px;
    border-left: 3px solid var(--color-primary);
    border-radius: var(--radius-sm);
    background: var(--color-primary-soft);
    font-size: 13px;
    line-height: 1.75;
    color: var(--text);
}

/* ========== 响应式 ========== */
@media (max-width: 720px) {
    .app-nav {
        display: none;
    }

    .tabbar {
        display: flex;
    }

    .container {
        padding-bottom: 96px;
    }

    /* 手机上还要扣掉底部导航栏的高度 */
    #toolHome {
        --tool-home-offset: 280px;
    }

    .app-header {
        position: static;
        padding: var(--space-2) var(--space-3);
    }
}

@media (max-width: 520px) {
    .user-meta {
        display: none;
    }

    .brand h1 {
        font-size: 16px;
    }

    .container {
        padding: var(--space-3) var(--space-2) 96px;
    }

    .card {
        padding: var(--space-3);
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .toast-host {
        top: 12px;
        left: 12px;
        right: 12px;
    }

    .toast {
        max-width: none;
    }
}

/* 触摸设备：删除与报错按钮始终可见，否则没有 hover 就点不到 */
@media (hover: none) {
    .delete-btn,
    .report-btn {
        opacity: 1;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ========== 词汇量测试 ========== */

.vocab-progress-text {
    margin-bottom: var(--space-1);
    font-size: 12px;
    color: var(--text-muted);
    text-align: right;
}

.vocab-progress {
    height: 6px;
    margin-bottom: var(--space-4);
    background: var(--bg);
    border-radius: var(--radius-pill);
    overflow: hidden;
}

.vocab-progress-fill {
    display: block;
    width: 0;
    height: 100%;
    background: var(--gradient);
    border-radius: var(--radius-pill);
    transition: width var(--transition);
}

.vocab-card {
    padding: var(--space-5) var(--space-3);
    margin-bottom: var(--space-3);
    background: var(--bg);
    border-radius: var(--radius-lg);
    text-align: center;
}

.vocab-term {
    font-size: 30px;
    font-weight: 700;
    color: var(--text-strong);
    overflow-wrap: break-word;
}

.vocab-hint {
    margin: var(--space-2) 0 0;
    font-size: 13px;
    color: var(--text-faint);
}

.vocab-actions {
    display: flex;
    gap: var(--space-2);
    margin-bottom: var(--space-2);
}

.vocab-actions .btn-primary,
.vocab-actions .btn-ghost {
    flex: 1;
}

.vocab-sub {
    margin: var(--space-4) 0 var(--space-2);
    font-size: 14px;
    color: var(--text-strong);
}

/* 核对：勾了「认识」的词连释义再列一遍 */
.vocab-check-list {
    margin-bottom: var(--space-3);
}

.vocab-check-item {
    display: flex;
    align-items: baseline;
    gap: var(--space-2);
    padding: 10px 12px;
    margin-bottom: var(--space-1);
    background: var(--bg);
    border-radius: var(--radius-sm);
    cursor: pointer;
}

.vocab-check-item input {
    flex-shrink: 0;
    margin-top: 3px;
}

.vocab-check-main {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
}

.vocab-check-term {
    font-size: 15px;
    color: var(--text-strong);
    overflow-wrap: break-word;
}

.vocab-check-meaning {
    font-size: 13px;
    color: var(--text-muted);
    overflow-wrap: break-word;
}

/* 结果 */
.vocab-result-head {
    padding: var(--space-4) var(--space-3);
    background: var(--bg);
    border-radius: var(--radius-lg);
    text-align: center;
}

.vocab-result-label {
    margin: 0;
    font-size: 13px;
    color: var(--text-muted);
}

.vocab-result-value {
    margin: var(--space-1) 0 0;
    font-size: 42px;
    font-weight: 700;
    line-height: 1.1;
    color: var(--color-primary);
}

.vocab-result-range {
    margin: var(--space-1) 0 0;
    font-size: 13px;
    color: var(--text-faint);
}

.vocab-chart {
    margin-top: var(--space-2);
}

.vocab-band {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin-bottom: 6px;
    font-size: 12px;
}

.vocab-band-label {
    flex-shrink: 0;
    width: 78px;
    color: var(--text-faint);
    font-variant-numeric: tabular-nums;
}

.vocab-band-track {
    flex: 1;
    height: 10px;
    background: var(--bg);
    border-radius: var(--radius-pill);
    overflow: hidden;
}

.vocab-band-fill {
    display: block;
    height: 100%;
    background: var(--gradient);
    border-radius: var(--radius-pill);
}

.vocab-band-value {
    flex-shrink: 0;
    width: 40px;
    text-align: right;
    color: var(--text-muted);
    font-variant-numeric: tabular-nums;
}

.vocab-result-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-3);
    margin-top: var(--space-4);
}

.vocab-save-status {
    margin: 0;
    font-size: 12px;
    color: var(--text-faint);
}

/* 历史记录 */
.vocab-history-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: 10px 12px;
    margin-bottom: var(--space-1);
    background: var(--bg);
    border-radius: var(--radius-sm);
}

.vocab-history-main {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: var(--space-2);
}

.vocab-history-value {
    font-size: 15px;
    color: var(--text-strong);
}

.vocab-history-meta {
    font-size: 12px;
    color: var(--text-muted);
}

.vocab-history-delta {
    font-size: 12px;
    font-weight: 600;
    color: var(--color-success);
}

.vocab-history-delta.down {
    color: var(--color-danger);
}

.vocab-history-delete {
    flex-shrink: 0;
    padding: 2px 10px;
    font-size: 12px;
}

/* ========== 选择弹窗（chooseDialog） ========== */

.choose-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
    max-height: 45vh;
    margin-bottom: var(--space-3);
    overflow-y: auto;
}

.choose-item {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: var(--space-2);
    width: 100%;
    padding: 11px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--surface);
    font: inherit;
    font-size: 14px;
    color: var(--text-strong);
    text-align: left;
    cursor: pointer;
    transition: background var(--transition), border-color var(--transition);
}

.choose-item:hover {
    background: var(--surface-soft);
    border-color: var(--color-primary);
}

.choose-hint {
    flex-shrink: 0;
    font-size: 12px;
    color: var(--text-faint);
}

/* 字典：查到的词加入生词本 */
.dict-actions {
    display: flex;
    gap: var(--space-2);
    margin-top: var(--space-3);
}

/* ========== 离线状态横幅 ========== */

.net-banner {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-2);
    padding: 10px 14px;
    margin-bottom: var(--space-3);
    background: var(--color-warning-soft, #fffaf0);
    border: 1px solid var(--color-warning);
    border-radius: var(--radius-md);
    font-size: 13px;
    color: var(--text);
}

.net-banner-text {
    min-width: 0;
    overflow-wrap: break-word;
}

.net-banner-action {
    flex-shrink: 0;
    padding: 5px 12px;
    border: 1px solid var(--color-warning);
    border-radius: var(--radius-pill);
    background: transparent;
    font: inherit;
    font-size: 13px;
    color: var(--color-warning);
    cursor: pointer;
    transition: background var(--transition);
}

.net-banner-action:hover {
    background: rgba(183, 121, 31, 0.1);
}

/* ========== 导出 PDF ========== */

/* 报告平时是隐藏的：点「导出 PDF」时生成一份挂在 body 下，再调浏览器打印
   （打印窗口里目标选「另存为 PDF」即可保存，中文和排版都由浏览器负责，不额外引第三方库） */
.print-report {
    display: none;
    color: #1a202c;
    font-size: 12px;
    line-height: 1.6;
    /* 表头底色、答错标记在打印时要保留 */
    print-color-adjust: exact;
    -webkit-print-color-adjust: exact;
}

.print-report h1 {
    margin: 0;
    font-size: 21px;
}

.print-report h2 {
    margin: 20px 0 8px;
    padding-bottom: 4px;
    font-size: 15px;
    border-bottom: 1px solid #cbd5e0;
}

.print-report h3 {
    margin: 14px 0 6px;
    font-size: 13px;
}

.print-report .print-meta,
.print-report .print-note {
    margin: 4px 0;
    color: #5b6b7c;
    font-size: 11px;
}

.print-report .print-summary {
    margin: 12px 0;
    padding: 8px 12px;
    background: #f4f5fb;
    border-radius: 6px;
}

.print-report .print-summary p {
    margin: 0;
}

.print-report .print-table {
    width: 100%;
    margin: 6px 0 12px;
    border-collapse: collapse;
    font-size: 11px;
}

.print-report .print-table th,
.print-report .print-table td {
    padding: 4px 6px;
    border: 1px solid #cbd5e0;
    text-align: left;
    vertical-align: top;
    overflow-wrap: break-word;
}

.print-report .print-table th {
    background: #eef1f7;
    font-weight: 700;
}

/* 别把一行拆到两页 */
.print-report .print-table tr {
    break-inside: avoid;
}

.print-report .print-logs {
    margin-bottom: 10px;
    font-size: 10px;
}

/* 答错的行标出来，翻打印稿时好找 */
.print-report .print-logs tr.print-bad td {
    background: #fdecea;
    color: #9b1c13;
}

.print-report .print-session {
    margin-bottom: 12px;
}

.print-report .print-session-head {
    margin-bottom: 4px;
}

@media print {
    /* 只打印报告本身：顶栏、底部导航、背景图都收起来 */
    body.print-report-open > *:not(.print-report) {
        display: none !important;
    }

    body.print-report-open .print-report {
        display: block;
    }

    @page {
        margin: 14mm 12mm;
    }
}