/* ============================================================
   进度查询系统 · 统一设计系统 (v2)
   风格：清爽科技渐变风 / 玻璃拟态 / 移动优先
   适用：index.php 外壳 + 各子页面 (ck/dk/qg/jieshao/gonggao)
   ============================================================ */

/* ---------- 设计令牌 ---------- */
:root {
    --primary: #6366f1;
    --primary-600: #4f46e5;
    --accent: #8b5cf6;
    --cyan: #06b6d4;
    --brand: linear-gradient(135deg, #6366f1 0%, #8b5cf6 52%, #22d3ee 100%);
    --brand-soft: linear-gradient(135deg, rgba(99,102,241,.12), rgba(34,211,238,.12));

    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #06b6d4;
    --queue: #8b5cf6;
    --processing: #f97316;

    --bg: #f3f5ff;
    --bg-2: #eaeefc;
    --surface: #ffffff;
    --surface-2: rgba(255, 255, 255, .72);
    --text: #1c2140;
    --text-soft: #5b6079;
    --text-faint: #9398b4;
    --border: rgba(99, 102, 241, .14);
    --border-strong: rgba(99, 102, 241, .28);
    --shadow-sm: 0 2px 8px rgba(28, 33, 64, .06);
    --shadow: 0 10px 30px rgba(28, 33, 64, .10);
    --shadow-lg: 0 24px 60px rgba(46, 40, 120, .18);
    --radius: 20px;
    --radius-sm: 14px;
    --radius-lg: 28px;
    --ease: cubic-bezier(.16, 1, .3, 1);
    --header-h: 60px;
    --nav-h: 66px;
    --font: "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

[data-theme="dark"] {
    --bg: #080b1a;
    --bg-2: #0c1126;
    --surface: #131a33;
    --surface-2: rgba(28, 36, 66, .62);
    --text: #e9ecff;
    --text-soft: #a6acd0;
    --text-faint: #6f76a0;
    --border: rgba(139, 92, 246, .20);
    --border-strong: rgba(139, 92, 246, .34);
    --shadow-sm: 0 2px 10px rgba(0, 0, 0, .35);
    --shadow: 0 12px 34px rgba(0, 0, 0, .45);
    --shadow-lg: 0 26px 64px rgba(0, 0, 0, .55);
}

/* ---------- 基础重置 ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    min-height: 100dvh;
    transition: background .4s var(--ease), color .4s var(--ease);
}
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
img { max-width: 100%; display: block; }
ul { list-style: none; }

/* 柔和渐变环境光（CSS 生成，无图片） */
body::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: -1;
    background:
        radial-gradient(60vw 60vw at 12% -8%, rgba(99, 102, 241, .16), transparent 60%),
        radial-gradient(55vw 55vw at 105% 8%, rgba(34, 211, 238, .14), transparent 60%),
        radial-gradient(50vw 50vw at 50% 115%, rgba(139, 92, 246, .12), transparent 60%);
    pointer-events: none;
}

/* ---------- 布局外壳 ---------- */
.app { display: flex; flex-direction: column; height: 100dvh; overflow: hidden; }

.app-header {
    flex: 0 0 var(--header-h);
    height: var(--header-h);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
    background: var(--surface-2);
    backdrop-filter: blur(18px) saturate(160%);
    -webkit-backdrop-filter: blur(18px) saturate(160%);
    border-bottom: 1px solid var(--border);
    z-index: 50;
}
.brand { display: flex; align-items: center; gap: 10px; min-width: 0; }
.brand__logo {
    width: 34px; height: 34px; border-radius: 11px;
    background: var(--brand);
    display: grid; place-items: center;
    color: #fff; font-size: 17px; flex: 0 0 auto;
    box-shadow: 0 6px 16px rgba(99, 102, 241, .4);
}
.brand__name { font-weight: 700; font-size: 15px; letter-spacing: .2px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.brand__tag { font-size: 11px; color: var(--text-faint); }

.header-actions { display: flex; align-items: center; gap: 8px; }
.icon-btn {
    width: 38px; height: 38px; border-radius: 12px;
    display: grid; place-items: center; font-size: 16px;
    color: var(--text-soft);
    background: var(--surface-2);
    border: 1px solid var(--border);
    transition: transform .2s var(--ease), color .2s, background .2s;
}
.icon-btn:hover { color: var(--primary); transform: translateY(-2px); }
.icon-btn:active { transform: scale(.95); }

.app-body { flex: 1; min-height: 0; display: flex; flex-direction: column; }
.side-nav { display: none; }
.app-main { flex: 1; min-height: 0; position: relative; }
.app-iframe { width: 100%; height: 100%; border: 0; display: block; background: transparent; }

/* 悬浮主题切换按钮（全端通用，替代原顶栏按钮） */
.fab-theme {
    position: fixed; top: 14px; right: 14px; z-index: 60;
    width: 40px; height: 40px; border-radius: 50%;
    display: grid; place-items: center; font-size: 16px;
    color: var(--text-soft);
    background: var(--surface-2);
    border: 1px solid var(--border);
    box-shadow: 0 4px 14px rgba(15, 23, 42, .12);
    cursor: pointer;
    transition: transform .2s var(--ease), color .2s, background .2s;
}
.fab-theme:hover { color: var(--primary); transform: translateY(-1px); }
.fab-theme:active { transform: scale(.94); }
[data-theme="dark"] .fab-theme { box-shadow: 0 4px 14px rgba(0, 0, 0, .35); }

/* 桌面端：左侧栏 + 主区（≥1024px 才显示侧边栏；平板/手机走底部 Tab） */
@media (min-width: 1024px) {
    .app-body { flex-direction: row; }
    .side-nav {
        display: flex; flex-direction: column;
        width: 248px; flex: 0 0 248px;
        padding: 18px 14px;
        background: var(--surface-2);
        backdrop-filter: blur(18px);
        -webkit-backdrop-filter: blur(18px);
        border-right: 1px solid var(--border);
        gap: 4px; overflow-y: auto;
    }
    .side-nav__title { font-size: 11px; color: var(--text-faint); padding: 6px 12px; letter-spacing: 1px; }
    .nav-item { justify-content: flex-start; gap: 12px; border-radius: 13px; padding: 11px 14px; }
    .nav-item .nav-label { display: inline; }
    .bottom-nav { display: none !important; }
}

/* ---------- 导航项（侧边 & 底部共用） ---------- */
.nav-item {
    display: flex; align-items: center; justify-content: center;
    gap: 0; padding: 0;
    color: var(--text-soft);
    font-size: 12px; font-weight: 600;
    border-radius: 14px;
    transition: color .25s var(--ease), background .25s var(--ease), transform .2s var(--ease);
    position: relative;
}
.nav-item .nav-ico { font-size: 19px; line-height: 1; transition: transform .25s var(--ease); }
.nav-item .nav-label { display: none; }
.nav-item:hover { color: var(--primary); background: rgba(99, 102, 241, .06); }
.nav-item:hover .nav-ico { transform: translateY(-2px) scale(1.08); }
.nav-item.active { color: var(--primary); background: rgba(99, 102, 241, .10); }
.nav-item.active .nav-ico { color: var(--primary); }
.nav-item.active::before {
    content: ""; position: absolute; left: 0; top: 50%; transform: translateY(-50%);
    width: 3px; height: 18px; border-radius: 0 3px 3px 0;
    background: var(--primary);
}

/* 底部 Tab 栏（移动端） */
.bottom-nav {
    flex: 0 0 var(--nav-h); height: var(--nav-h);
    display: flex; align-items: stretch;
    background: var(--surface-2);
    backdrop-filter: blur(18px) saturate(160%);
    -webkit-backdrop-filter: blur(18px) saturate(160%);
    border-top: 1px solid var(--border);
    padding: 6px 4px calc(6px + env(safe-area-inset-bottom));
    z-index: 50;
}
.bottom-nav .nav-item { flex: 1; flex-direction: column; gap: 3px; }
.bottom-nav .nav-item .nav-label { display: block; font-size: 10.5px; }
.bottom-nav .nav-item.active .nav-ico {
    color: var(--primary);
    background: rgba(99, 102, 241, .10); padding: 7px; border-radius: 12px; margin-top: -2px;
}

/* ---------- 容器 / 页面 ---------- */
.page { min-height: 100%; padding: 18px 14px 26px; }
.container { width: 100%; max-width: 1080px; margin: 0 auto; }
.page-head { margin-bottom: 16px; }
.page-head h1 { font-size: 20px; font-weight: 800; letter-spacing: -.3px; }
.page-head p { font-size: 13px; color: var(--text-soft); margin-top: 3px; }

/* ---------- 文字 / 渐变 ---------- */
.text-gradient {
    background: var(--brand);
    -webkit-background-clip: text; background-clip: text;
    -webkit-text-fill-color: transparent; color: transparent;
}
.text-soft { color: var(--text-soft); }
.text-faint { color: var(--text-faint); }
.text-danger { color: var(--danger); }
.text-warning { color: var(--warning); }
.text-success { color: var(--success); }

/* ---------- 卡片 / 玻璃 ---------- */
.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    padding: 18px;
    transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s;
}
.glass {
    background: var(--surface-2);
    backdrop-filter: blur(20px) saturate(160%);
    -webkit-backdrop-filter: blur(20px) saturate(160%);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
}
.card-hover:hover { transform: translateY(-3px); box-shadow: var(--shadow); border-color: var(--border-strong); }
.card-title { font-size: 16px; font-weight: 700; display: flex; align-items: center; gap: 8px; margin-bottom: 14px; }
.card-title .ci { color: var(--primary); font-size: 17px; }

/* ---------- Hero ---------- */
.hero {
    position: relative; overflow: hidden;
    border-radius: var(--radius-lg);
    padding: 26px 22px;
    background: var(--brand);
    color: #fff;
    box-shadow: var(--shadow-lg);
    margin-bottom: 18px;
}
.hero::after {
    content: ""; position: absolute; inset: 0;
    background:
        radial-gradient(40% 60% at 85% 10%, rgba(255, 255, 255, .28), transparent 60%),
        radial-gradient(50% 70% at 10% 110%, rgba(255, 255, 255, .16), transparent 60%);
    pointer-events: none;
}
.hero > * { position: relative; z-index: 1; }
.hero h2 { font-size: 22px; font-weight: 800; letter-spacing: -.4px; }
.hero p { font-size: 13.5px; opacity: .92; margin-top: 6px; max-width: 46ch; }
.hero__badge {
    display: inline-flex; align-items: center; gap: 6px;
    background: rgba(255, 255, 255, .2);
    padding: 5px 12px; border-radius: 999px;
    font-size: 12px; font-weight: 600; margin-bottom: 12px;
    backdrop-filter: blur(6px);
}
.hero__badge .dot { width: 7px; height: 7px; border-radius: 50%; background: #4ade80; box-shadow: 0 0 0 4px rgba(74, 222, 128, .35); animation: pulse 2s infinite; }

/* ---------- 表单 ---------- */
.field { position: relative; margin-bottom: 12px; }
.input {
    width: 100%;
    padding: 14px 16px 14px 44px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--text);
    font-size: 15px;
    transition: border-color .25s, box-shadow .25s, background .25s;
    outline: none;
}
.input::placeholder { color: var(--text-faint); }
.input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, .15);
}
.input-icon {
    position: absolute; left: 15px; top: 50%; transform: translateY(-50%);
    color: var(--text-faint); font-size: 16px; pointer-events: none;
    transition: color .25s;
}
.field:focus-within .input-icon { color: var(--primary); }

/* ---------- 按钮 ---------- */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 13px 18px; border-radius: var(--radius-sm);
    font-size: 15px; font-weight: 600;
    transition: transform .2s var(--ease), box-shadow .2s, background .2s, opacity .2s;
    border: 1px solid transparent; white-space: nowrap;
}
.btn:active { transform: scale(.97); }
.btn-block { width: 100%; }
.btn-primary { background: var(--brand); color: #fff; box-shadow: 0 10px 24px rgba(99, 102, 241, .38); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 30px rgba(99, 102, 241, .5); }
.btn-ghost { background: var(--surface-2); color: var(--text); border-color: var(--border); }
.btn-ghost:hover { border-color: var(--border-strong); transform: translateY(-2px); }
.btn-info { background: linear-gradient(135deg, #06b6d4, #0891b2); color: #fff; box-shadow: 0 8px 20px rgba(6, 182, 212, .35); }
.btn-info:hover { transform: translateY(-2px); box-shadow: 0 12px 26px rgba(6, 182, 212, .5); }
.btn-warning { background: linear-gradient(135deg, #f59e0b, #fbbf24); color: #fff; box-shadow: 0 8px 20px rgba(245, 158, 11, .35); }
.btn-warning:hover { transform: translateY(-2px); box-shadow: 0 12px 26px rgba(245, 158, 11, .5); }
.btn-sm { padding: 9px 13px; font-size: 13px; border-radius: 11px; }
.btn[disabled] { opacity: .55; pointer-events: none; }

/* ---------- 课程卡片 ---------- */
.course-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    padding: 16px;
    transition: transform .3s var(--ease), box-shadow .3s, border-color .3s;
}
.course-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); border-color: var(--border-strong); }
.course-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 10px; margin-bottom: 12px; }
.course-name { font-size: 15px; font-weight: 700; line-height: 1.4; }
.course-source { font-size: 11px; color: var(--text-faint); margin-top: 3px; }

.status {
    flex: 0 0 auto; display: inline-flex; align-items: center; gap: 5px;
    padding: 4px 11px; border-radius: 999px;
    font-size: 12px; font-weight: 600; white-space: nowrap;
    background: var(--surface-2); color: var(--text-soft);
    border: 1px solid var(--border);
}
/* 状态改“淡色描边 + 语义色文字”，只保留完成=绿、异常=红两个强色，其余走中性 */
.status--done { color: var(--success); background: color-mix(in srgb, var(--success) 12%, transparent); border-color: color-mix(in srgb, var(--success) 30%, transparent); }
.status--queue { color: var(--text-soft); }
.status--processing { color: var(--primary); background: color-mix(in srgb, var(--primary) 12%, transparent); border-color: color-mix(in srgb, var(--primary) 30%, transparent); }
.status--up { color: var(--text-soft); }
.status--error, .status--fail { color: var(--danger); background: color-mix(in srgb, var(--danger) 12%, transparent); border-color: color-mix(in srgb, var(--danger) 30%, transparent); }
.status--info { color: var(--text-soft); }
.status .spin { animation: spin 1s linear infinite; }

.meta { font-size: 13px; color: var(--text-soft); display: grid; gap: 5px; }
.meta b { color: var(--text); font-weight: 600; }
.note { color: var(--text-soft); font-weight: 600; }
.hint { font-size: 12px; color: var(--text-faint); font-style: italic; margin-top: 6px; display: flex; align-items: center; gap: 5px; }

/* 进度条 */
.progress {
    width: 100%; height: 26px;
    background: color-mix(in srgb, var(--text) 8%, transparent);
    border-radius: 999px; overflow: hidden; position: relative; margin: 12px 0 14px;
}
.progress__bar {
    height: 100%; border-radius: 999px; width: 0;
    transition: width 1s var(--ease);
    background: linear-gradient(90deg, #6366f1, #8b5cf6);
    position: relative; overflow: hidden;
}
.progress__bar::after {
    content: ""; position: absolute; inset: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, .35), transparent);
    transform: translateX(-100%); animation: shimmer 2.2s infinite;
}
.progress__label {
    position: absolute; inset: 0; display: grid; place-items: center;
    font-size: 12.5px; font-weight: 700; color: var(--text);
}

/* 课程操作按钮行 */
.course-actions { display: flex; gap: 10px; }
.course-actions .btn { flex: 1; }

/* ---------- 状态网格（空/加载/错误） ---------- */
.state {
    text-align: center; padding: 44px 20px; color: var(--text-soft);
}
.state__ico { font-size: 40px; color: var(--primary); margin-bottom: 12px; opacity: .9; }
.state__title { font-size: 16px; font-weight: 700; color: var(--text); margin-bottom: 6px; }
.state__desc { font-size: 13px; }
.skeleton {
    background: linear-gradient(90deg, var(--bg-2) 25%, var(--surface-2) 37%, var(--bg-2) 63%);
    background-size: 400% 100%; animation: shimmer 1.4s infinite;
    border-radius: 12px;
}

/* ---------- 手风琴（公告） ---------- */
.acc { display: none; }
.acc.open { display: grid; gap: 10px; }
.acc__item {
    background: var(--surface); border: 1px solid var(--border);
    border-radius: var(--radius-sm); overflow: hidden;
    transition: border-color .25s, box-shadow .25s;
}
.acc__item.open { border-color: var(--border-strong); box-shadow: var(--shadow-sm); }
.acc__head {
    display: flex; align-items: center; gap: 10px;
    padding: 13px 15px; cursor: pointer; user-select: none;
    font-size: 14px; font-weight: 600; color: var(--text);
}
.acc__head .ci { color: var(--primary); width: 20px; text-align: center; }
.acc__head .chev { margin-left: auto; color: var(--text-faint); transition: transform .3s var(--ease); }
.acc__item.open .acc__head .chev { transform: rotate(180deg); color: var(--primary); }
.acc__body {
    max-height: 0; opacity: 0; overflow: hidden;
    transition: max-height .35s var(--ease), opacity .3s var(--ease);
    padding: 0 15px;
}
.acc__item.open .acc__body { max-height: 1200px; opacity: 1; padding: 0 15px 15px; }
.acc__body p { font-size: 13px; color: var(--text-soft); margin-bottom: 7px; display: flex; gap: 7px; }
.acc__body p .ci { color: var(--success); flex: 0 0 auto; }
.acc__body .grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 2px 14px; }

/* 公告头部条 */
.acc-bar {
    display: flex; align-items: center; gap: 10px;
    padding: 13px 15px; border-radius: var(--radius-sm); cursor: pointer;
    background: var(--brand-soft); border: 1px solid var(--border);
    margin-bottom: 12px; transition: transform .2s var(--ease);
}
.acc-bar:active { transform: scale(.99); }
.acc-bar .badge {
    background: var(--danger); color: #fff; font-size: 10px; font-weight: 700;
    padding: 2px 8px; border-radius: 999px; animation: pulse 2s infinite;
}
.acc-bar .title { font-weight: 700; font-size: 13px; flex: 1; min-width: 0; }
.acc-bar .pulse-tag { background: rgba(245, 158, 11, .18); color: var(--warning); font-size: 10px; padding: 2px 8px; border-radius: 999px; }
.acc-bar.open .fa-chevron-down { transform: rotate(180deg); color: var(--primary); }

/* ---------- 滚动公告 (marquee) ---------- */
.marquee {
    overflow: hidden; white-space: nowrap; position: relative;
    border-radius: var(--radius-sm); padding: 11px 14px;
    background: var(--brand-soft); border: 1px solid var(--border);
    margin-bottom: 16px; display: flex; align-items: center; gap: 8px;
}
.marquee .mi { color: var(--primary); flex: 0 0 auto; }
.marquee__track { display: inline-block; padding-left: 100%; animation: marquee 22s linear infinite; }
.marquee__track span { font-size: 13px; color: var(--text-soft); }

/* ---------- 对比表 ---------- */
.table { width: 100%; border-collapse: collapse; font-size: 13px; overflow: hidden; border-radius: var(--radius-sm); }
.table th, .table td { padding: 11px 12px; text-align: left; border-bottom: 1px solid var(--border); }
.table th { background: var(--surface-2); font-weight: 700; color: var(--text); }
.table tr:last-child td { border-bottom: none; }
.table tbody tr:hover { background: var(--surface-2); }

/* ---------- Toast 通知 ---------- */
.toast-wrap {
    position: fixed; top: 18px; left: 50%; transform: translateX(-50%);
    z-index: 9999; display: flex; flex-direction: column; gap: 10px; align-items: center;
    pointer-events: none; width: max-content; max-width: 92vw;
}
.toast {
    display: flex; align-items: center; gap: 10px;
    padding: 12px 18px; border-radius: 14px;
    background: var(--surface); border: 1px solid var(--border);
    box-shadow: var(--shadow-lg); color: var(--text);
    font-size: 14px; font-weight: 500; max-width: 92vw;
    transform: translateY(-16px); opacity: 0;
    transition: transform .35s var(--ease), opacity .35s var(--ease);
}
.toast.show { transform: translateY(0); opacity: 1; }
.toast .ti { font-size: 18px; flex: 0 0 auto; }
.toast--success .ti { color: var(--success); }
.toast--error .ti { color: var(--danger); }
.toast--info .ti { color: var(--info); }
.toast--warning .ti { color: var(--warning); }

/* ---------- 弹窗 ---------- */
.modal-mask {
    position: fixed; inset: 0; z-index: 9990;
    background: rgba(10, 12, 30, .5);
    backdrop-filter: blur(4px);
    display: flex; align-items: center; justify-content: center; padding: 18px;
    opacity: 0; visibility: hidden; transition: opacity .3s, visibility .3s;
}
.modal-mask.active { opacity: 1; visibility: visible; }
.modal {
    width: 100%; max-width: 420px;
    background: var(--surface); border: 1px solid var(--border);
    border-radius: var(--radius); box-shadow: var(--shadow-lg);
    transform: translateY(18px) scale(.97); opacity: 0;
    transition: transform .35s var(--ease), opacity .35s;
    overflow: hidden;
}
.modal-mask.active .modal { transform: translateY(0) scale(1); opacity: 1; }
.modal__head {
    display: flex; align-items: center; gap: 10px;
    padding: 16px 18px; border-bottom: 1px solid var(--border);
    font-weight: 700; font-size: 16px;
}
.modal__head .ci { color: var(--warning); font-size: 18px; }
.modal__body { padding: 18px; font-size: 14px; color: var(--text-soft); line-height: 1.7; }
.modal__body .warn {
    display: flex; gap: 8px; align-items: flex-start;
    background: color-mix(in srgb, var(--danger) 10%, transparent);
    color: var(--danger); border-radius: 12px; padding: 10px 12px; margin: 10px 0; font-weight: 600;
}
.modal__foot { display: flex; gap: 10px; padding: 0 18px 18px; }
.modal__foot .btn { flex: 1; }
.modal__close { margin-left: auto; color: var(--text-faint); font-size: 20px; line-height: 1; padding: 4px; }
.modal__close:hover { color: var(--text); }

/* ---------- 平台入口 / 外链块 ---------- */
.link-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
@media (min-width: 560px) { .link-grid { grid-template-columns: repeat(3, 1fr); } }
.link-chip {
    display: flex; align-items: center; gap: 9px;
    padding: 12px 13px; border-radius: var(--radius-sm);
    background: var(--surface); border: 1px solid var(--border);
    font-size: 13.5px; font-weight: 600; color: var(--text);
    transition: transform .2s var(--ease), border-color .2s, color .2s;
}
.link-chip:hover { transform: translateY(-2px); border-color: var(--primary); color: var(--primary); }
.link-chip .ci { color: var(--primary); }

/* 大按钮组（打卡/强国） */
.action-duo { display: flex; gap: 14px; flex-wrap: wrap; justify-content: center; margin-top: 8px; }
.action-duo .btn { min-width: 190px; }

/* ---------- 动画 ---------- */
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes pulse { 0%, 100% { transform: scale(1); opacity: 1; } 50% { transform: scale(1.12); opacity: .8; } }
@keyframes shimmer { to { transform: translateX(100%); } }
@keyframes marquee { from { transform: translateX(0); } to { transform: translateX(-100%); } }
@keyframes fadeUp { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: translateY(0); } }

.anim-up { opacity: 0; animation: fadeUp .6s var(--ease) forwards; animation-delay: calc(var(--i, 0) * 90ms); }
.pulse { animation: pulse 2s infinite; }

/* 进入动画（课程卡片错峰） */
.stagger > * { opacity: 0; animation: fadeUp .5s var(--ease) forwards; animation-delay: calc(var(--i, 0) * 80ms); }

/* ---------- 提示框 callout ---------- */
.callout {
    padding: 11px 14px; border-radius: 12px; margin: 10px 0;
    font-size: 13px; line-height: 1.7; border-left: 3px solid var(--border-strong);
    background: var(--surface-2);
}
.callout--danger { background: color-mix(in srgb, var(--danger) 10%, transparent); border-left-color: var(--danger); }
.callout--warning { background: color-mix(in srgb, var(--warning) 12%, transparent); border-left-color: var(--warning); }
.callout--info { background: color-mix(in srgb, var(--info) 10%, transparent); border-left-color: var(--info); }
.callout--primary { background: var(--brand-soft); border-left-color: var(--primary); }
.callout--ok { background: color-mix(in srgb, var(--success) 10%, transparent); border-left-color: var(--success); }
.callout--error { background: color-mix(in srgb, var(--danger) 10%, transparent); border-left-color: var(--danger); }
.callout b { color: var(--text); }

/* 通用段落 */
.prose p { font-size: 14px; color: var(--text-soft); margin-bottom: 9px; line-height: 1.75; }
.prose h3 { font-size: 14.5px; font-weight: 700; color: var(--text); margin: 14px 0 7px; }
.prose ul { padding-left: 18px; }
.prose li { font-size: 13.5px; color: var(--text-soft); margin-bottom: 5px; list-style: disc; }

/* ============================================================
   三端响应式 & 界面美化增强
   ============================================================ */

/* 聊天区（微信风格由文件末尾覆盖块统一处理） */
.chat { position: relative; }
.chat > * { position: relative; z-index: 1; }

/* 欢迎卡片 */
.welcome { text-align: center; padding: 30px 18px 6px; animation: fadeUp .6s var(--ease) both; }
.welcome__ring {
    width: 66px; height: 66px; margin: 0 auto 14px; border-radius: 50%;
    background: var(--brand); display: grid; place-items: center; color: #fff; font-size: 30px;
    box-shadow: 0 12px 30px rgba(99, 102, 241, .45); position: relative;
}
.welcome__ring::after {
    content: ""; position: absolute; inset: -6px; border-radius: 50%;
    border: 2px solid transparent; background: var(--brand) border-box;
    -webkit-mask: linear-gradient(#000 0 0) padding-box, linear-gradient(#000 0 0);
    -webkit-mask-composite: xor; mask-composite: exclude;
    opacity: .4; animation: spin 7s linear infinite;
}
.welcome__title { font-size: 20px; font-weight: 800; letter-spacing: -.3px; }
.welcome__sub { font-size: 13px; color: var(--text-soft); margin-top: 7px; max-width: 42ch; margin-inline: auto; line-height: 1.7; }
.welcome__suggest { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin-top: 16px; }
.welcome__suggest .chip { box-shadow: var(--shadow-sm); }

/* 头像光环 */
.chat__avatar {
    box-shadow: 0 6px 16px rgba(99, 102, 241, .4),
                0 0 0 3px color-mix(in srgb, var(--primary) 18%, transparent);
}

/* 气泡细节 */
.bubble--bot { border-top: 1px solid var(--border); }
.msg--user .msg__avatar { background: var(--surface); color: var(--primary); border: 1px solid var(--border); }

/* 课程卡片左侧细线：统一主色，仅异常转红（去除按状态循环变色） */
.course-card { position: relative; overflow: hidden; }
.course-card::before {
    content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 3px;
    background: var(--primary); opacity: .45; transition: opacity .3s var(--ease);
}
.course-card:hover::before { opacity: .8; }
.course-card.status--error::before { background: var(--danger); opacity: .85; }

/* chips 美化（含图标） */
.chip { box-shadow: var(--shadow-sm); display: inline-flex; align-items: center; }
.chip i { margin-right: 6px; color: var(--primary); font-size: 12px; }

/* 聊天区滚动条 */
.chat__body::-webkit-scrollbar { width: 7px; }
.chat__body::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 8px; }
.chat__body::-webkit-scrollbar-track { background: transparent; }

/* ===== 三端断点细化 ===== */
/* 手机优先：默认即手机布局（底部 Tab、紧凑气泡） */

/* 平板 640–1023：放宽间距、略大字号 */
@media (min-width: 640px) {
    .chat { max-width: 760px; }
    .welcome__title { font-size: 23px; }
    .bubble { max-width: 80%; }
    .bottom-nav .nav-item .nav-label { font-size: 11.5px; }
    .chips { padding: 12px 18px; }
    .chat__body { padding: 18px 18px 10px; }
}

/* 桌面 ≥1024：侧边栏 + 居中聊天、更舒展 */
@media (min-width: 1024px) {
    .chat { max-width: 940px; }
    .bubble { max-width: 72%; }
    .chat__head { padding: 14px 22px; }
    .chat__body { padding: 22px 22px 12px; }
    .chips { padding: 12px 22px; }
    .welcome { padding: 38px 18px 6px; }
    .course-actions .btn { padding: 11px 16px; font-size: 14px; }
}

/* ---------- 无障碍：减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
    .marquee__track { animation: none; padding-left: 0; }
}

/* 滚动条美化 */
.side-nav::-webkit-scrollbar, .app-main::-webkit-scrollbar { width: 8px; }
.side-nav::-webkit-scrollbar-thumb, .app-main::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 8px; }

/* ============================================================
   对话窗口 chat（智能助手）
   ============================================================ */
.chat {
    display: flex; flex-direction: column;
    height: 100dvh; max-width: 860px; margin: 0 auto;
    background: transparent;
}
.chat__head {
    flex: 0 0 auto; display: flex; align-items: center; gap: 12px;
    padding: 12px 16px; border-bottom: 1px solid var(--border);
    background: var(--surface-2); backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px);
}
.chat__avatar {
    width: 40px; height: 40px; border-radius: 13px; flex: 0 0 auto;
    background: var(--brand); display: grid; place-items: center;
    color: #fff; font-size: 19px; box-shadow: 0 6px 16px rgba(99, 102, 241, .4); position: relative;
}
.chat__avatar .online {
    position: absolute; right: -2px; bottom: -2px; width: 12px; height: 12px;
    border-radius: 50%; background: #4ade80; border: 2px solid var(--surface);
}
.chat__title { font-weight: 700; font-size: 15px; line-height: 1.2; }
.chat__sub { font-size: 11.5px; color: var(--text-faint); display: flex; align-items: center; gap: 5px; }
.chat__head .icon-btn { margin-left: auto; }

.chat__body {
    flex: 1; min-height: 0; overflow-y: auto;
    padding: 16px 14px 8px; display: flex; flex-direction: column; gap: 14px;
    scroll-behavior: smooth;
}
.msg { display: flex; gap: 10px; align-items: flex-end; max-width: 100%; animation: fadeUp .4s var(--ease) both; }
.msg--user { flex-direction: row-reverse; }
.msg__avatar {
    width: 30px; height: 30px; border-radius: 10px; flex: 0 0 auto;
    background: var(--brand); display: grid; place-items: center; color: #fff; font-size: 14px;
}
.msg--user .msg__avatar { background: var(--surface-2); color: var(--primary); border: 1px solid var(--border); }
.bubble {
    max-width: 78%; padding: 11px 14px; border-radius: 16px; font-size: 14px; line-height: 1.65;
    box-shadow: var(--shadow-sm); word-break: break-word;
}
.bubble p { white-space: pre-wrap; margin: 0; }
.bubble--bot { background: var(--surface); border: 1px solid var(--border); border-bottom-left-radius: 5px; }
.bubble--user { background: var(--brand); color: #fff; border-bottom-right-radius: 5px; }
.bubble--user p { color: #fff; }
.bubble--wide { max-width: 92%; }
.bubble--bot .course-card { margin-top: 4px; box-shadow: none; }
.bubble--bot .course-card:first-child { margin-top: 0; }

/* 快捷指令 */
.chips { flex: 0 0 auto; display: flex; gap: 8px; overflow-x: auto; padding: 10px 14px; scrollbar-width: none; }
.chips::-webkit-scrollbar { display: none; }
.chip {
    flex: 0 0 auto; padding: 8px 14px; border-radius: 999px; white-space: nowrap;
    background: var(--surface); border: 1px solid var(--border);
    font-size: 13px; font-weight: 600; color: var(--text-soft);
    transition: all .2s var(--ease);
}
.chip:hover { color: var(--primary); border-color: var(--primary); transform: translateY(-2px); }
.chip:active { transform: scale(.96); }

/* 输入栏 */
.chat__input {
    flex: 0 0 auto; display: flex; gap: 10px; align-items: flex-end;
    padding: 12px 14px calc(12px + env(safe-area-inset-bottom));
    border-top: 1px solid var(--border); background: var(--surface-2);
    backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px);
}
.chat__input textarea {
    flex: 1; resize: none; max-height: 120px; outline: none;
    border: 1px solid var(--border); background: var(--surface); color: var(--text);
    border-radius: 14px; padding: 12px 14px; font-size: 15px; font-family: inherit; line-height: 1.5;
    transition: border-color .2s, box-shadow .2s;
}
.chat__input textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 4px rgba(99, 102, 241, .15); }
.chat__send {
    width: 46px; height: 46px; flex: 0 0 auto; border-radius: 14px;
    background: var(--brand); color: #fff; display: grid; place-items: center; font-size: 18px;
    box-shadow: 0 8px 20px rgba(99, 102, 241, .4); transition: transform .2s var(--ease), opacity .2s;
}
.chat__send:hover { transform: translateY(-2px); }
.chat__send:active { transform: scale(.94); }
.chat__send[disabled] { opacity: .5; pointer-events: none; }

/* 打字指示 */
.typing { display: inline-flex; gap: 4px; align-items: center; padding: 4px 2px; }
.typing span { width: 7px; height: 7px; border-radius: 50%; background: var(--text-faint); animation: typing 1.2s infinite; }
.typing span:nth-child(2) { animation-delay: .2s; }
.typing span:nth-child(3) { animation-delay: .4s; }
@keyframes typing { 0%, 60%, 100% { transform: translateY(0); opacity: .4; } 30% { transform: translateY(-5px); opacity: 1; } }

/* 进度摘要条 */
.summary { font-size: 13.5px; line-height: 1.7; }
.summary .line { display: flex; gap: 8px; align-items: center; margin-bottom: 5px; flex-wrap: wrap; }
.summary .num {
    display: inline-grid; place-items: center; min-width: 22px; height: 22px; padding: 0 7px;
    border-radius: 999px; font-size: 12px; font-weight: 700;
}
.num--done { color: var(--success); background: color-mix(in srgb, var(--success) 14%, transparent); }
.num--ing { color: var(--text-soft); background: var(--surface-2); border: 1px solid var(--border); }
.num--err { color: var(--danger); background: color-mix(in srgb, var(--danger) 14%, transparent); }
.num--total { color: var(--primary); background: color-mix(in srgb, var(--primary) 14%, transparent); }
.summary .tip { color: var(--text-soft); font-weight: 600; }
.summary .tip--danger { color: var(--danger); }

/* ============================================================
   微信 / 小程序 风格覆盖（仅作用于对话页 .chat，不影响其余页面）
   目标：浅灰底 + 白/微信绿气泡 + 绿色细进度条 + 圆角扁平卡片，去玻璃/光晕/机器人
   ============================================================ */
.chat {
    --wx-green: #07C160;
    --wx-green-2: #09BB07;
    --wx-green-light: #95EC69;
    --wx-red: #FA5151;
    --wx-bg: #EDEDED;
    --wx-card: #FFFFFF;
    --wx-line: #E5E5E5;
    --wx-text: #1A1A1A;
    --wx-sub: #888888;
    --wx-chip: #F2F2F2;
    background: var(--wx-bg);
}
.chat::before { display: none; }

/* 头部：浅灰底、绿色小图标，去光晕 */
.chat__head {
    background: #F7F7F7; border-bottom: 1px solid var(--wx-line);
    backdrop-filter: none; -webkit-backdrop-filter: none;
}
.chat__avatar { background: var(--wx-green); box-shadow: none; border-radius: 10px; }
.chat__avatar .online { background: var(--wx-green-light); border-color: #F7F7F7; }
.chat__title { color: var(--wx-text); }
.chat__sub { color: var(--wx-sub); }

/* 气泡：对方白、自己微信绿 */
.msg__avatar { background: var(--wx-green); box-shadow: none; border-radius: 8px; color: #fff; }
.msg--user .msg__avatar { background: #D8D8D8; color: #555; border: none; }
.bubble { box-shadow: none; border-radius: 8px; }
.bubble--bot { background: var(--wx-card); border: 1px solid var(--wx-line); color: var(--wx-text); border-top-left-radius: 2px; }
.bubble--user { background: var(--wx-green-light); color: var(--wx-text); border-top-right-radius: 2px; }
.bubble--user p { color: var(--wx-text); }

/* 课程卡片：白底、细线、扁平、无玻璃无悬浮、无左侧彩条 */
.course-card {
    background: var(--wx-card); border: 1px solid var(--wx-line);
    border-radius: 8px; box-shadow: none; padding: 14px;
}
.course-card::before, .course-card.status--error::before { display: none !important; }
.course-card:hover { transform: none; box-shadow: none; border-color: var(--wx-line); }
.course-name { color: var(--wx-text); }
.course-source { color: var(--wx-sub); }

/* 状态标签：淡灰底，仅完成绿 / 异常红 给语义色 */
.status { background: var(--wx-chip); color: var(--wx-sub); border-color: transparent; }
.status--done { color: var(--wx-green); background: color-mix(in srgb, var(--wx-green) 12%, transparent); }
.status--error, .status--fail { color: var(--wx-red); background: color-mix(in srgb, var(--wx-red) 12%, transparent); }
.status--processing { color: var(--wx-green); }

/* 进度条：微信绿 */
.progress { background: #EAEAEA; border-radius: 999px; height: 22px; }
.progress__bar { background: linear-gradient(90deg, var(--wx-green), var(--wx-green-2)) !important; border-radius: 999px; }
.progress__label { color: var(--wx-text); }

/* 备注 / 提示：中性灰，不过度强调 */
.note { color: var(--wx-sub); font-weight: 500; }
.hint { color: #AAAAAA; font-style: normal; }

/* 操作按钮：主按钮微信绿，次按钮浅灰描边 */
.course-actions .btn-primary { background: var(--wx-green); color: #fff; box-shadow: none; border: none; }
.course-actions .btn-primary:hover { transform: none; box-shadow: none; background: var(--wx-green-2); }
.course-actions .btn-ghost { background: #F2F2F2; color: var(--wx-text); border: 1px solid var(--wx-line); box-shadow: none; }
.course-actions .btn-ghost:hover { transform: none; background: #EAEAEA; }

/* chips：浅灰 pill、绿字、无阴影 */
.chip { background: var(--wx-chip); color: var(--wx-green); border-color: transparent; box-shadow: none; }
.chip i { color: var(--wx-green); }
.chip:hover { color: var(--wx-green); border-color: var(--wx-green); transform: none; background: #EAF8EF; }

/* 欢迎：静态绿色圆角图标，无旋转光环 */
.welcome__ring { display: none; }
.welcome__icon {
    width: 60px; height: 60px; margin: 0 auto 14px; border-radius: 16px;
    background: var(--wx-green); display: grid; place-items: center; color: #fff; font-size: 30px;
}
.welcome__title { color: var(--wx-text); }
.welcome__sub { color: var(--wx-sub); }
.welcome__suggest .chip { box-shadow: none; }

/* 输入栏：白底、绿发送 */
.chat__input { background: #F7F7F7; border-top: 1px solid var(--wx-line); backdrop-filter: none; -webkit-backdrop-filter: none; }
.chat__input textarea { background: #fff; border-color: var(--wx-line); border-radius: 8px; }
.chat__input textarea:focus { border-color: var(--wx-green); box-shadow: 0 0 0 3px rgba(7, 193, 96, .15); }
.chat__send { background: var(--wx-green); box-shadow: none; border-radius: 8px; }
.chat__send:hover { transform: none; background: var(--wx-green-2); }

/* 打字点：微信灰 */
.typing span { background: #C8C8C8; }

/* 摘要数字：淡灰描边 */
.summary .num { background: var(--wx-chip); color: var(--wx-sub); border: 1px solid var(--wx-line); }
.num--done { color: var(--wx-green); background: color-mix(in srgb, var(--wx-green) 12%, transparent); border-color: transparent; }
.num--err { color: var(--wx-red); background: color-mix(in srgb, var(--wx-red) 12%, transparent); border-color: transparent; }
.num--total { color: var(--wx-green); background: color-mix(in srgb, var(--wx-green) 12%, transparent); border-color: transparent; }
.summary .tip--danger { color: var(--wx-red); }

/* 暗色模式：微信暗色配色 */
[data-theme="dark"] .chat {
    --wx-bg: #111111; --wx-card: #2C2C2C; --wx-line: #3A3A3A;
    --wx-text: #E5E5E5; --wx-sub: #9A9A9A; --wx-chip: #333333;
}
[data-theme="dark"] .chat__head,
[data-theme="dark"] .chat__input { background: #1A1A1A; }
[data-theme="dark"] .bubble--bot { background: #2C2C2C; border-color: #3A3A3A; color: #E5E5E5; }
[data-theme="dark"] .bubble--user { background: var(--wx-green); color: #fff; }
[data-theme="dark"] .bubble--user p { color: #fff; }
[data-theme="dark"] .progress { background: #3A3A3A; }
[data-theme="dark"] .chat__input textarea { background: #2C2C2C; color: #E5E5E5; border-color: #3A3A3A; }
[data-theme="dark"] .course-actions .btn-ghost { background: #333; color: #E5E5E5; border-color: #3A3A3A; }
[data-theme="dark"] .course-actions .btn-ghost:hover { background: #3A3A3A; }