:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-soft: #eff6ff;
    --text: #1f2937;
    --muted: #6b7280;
    --border: #e5e7eb;
    --bg: #f6f8fb;
    --card: #ffffff;
    --ok: #12805c;
    --ok-soft: #ecfdf5;
    --err: #dc2626;
    --err-soft: #fef2f2;
    --warn: #b45309;
    --warn-soft: #fffbeb;
    --radius: 12px;
    --shadow: 0 2px 10px rgba(16, 24, 40, .06);
}

* { box-sizing: border-box; }

body {
    margin: 0;
    padding: 0;
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    font-size: 15px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -webkit-text-size-adjust: 100%;
    -webkit-tap-highlight-color: transparent;
}

.wrap { max-width: 760px; margin: 0 auto; padding: 24px 16px 48px; }

.hero { text-align: center; padding: 20px 8px 24px; }
.hero h1 { margin: 0 0 6px; font-size: 24px; font-weight: 700; letter-spacing: .5px; }
.hero p { margin: 0; color: var(--muted); font-size: 14px; }

.notice {
    background: var(--warn-soft);
    border: 1px solid #fde68a;
    color: var(--warn);
    padding: 10px 14px;
    border-radius: var(--radius);
    margin-bottom: 16px;
    font-size: 14px;
    white-space: pre-wrap;
}
.notice.closed { background: var(--err-soft); border-color: #fecaca; color: var(--err); }

.tabs { display: flex; gap: 8px; margin-bottom: 16px; }
.tabs button {
    flex: 1;
    padding: 10px 12px;
    border: 1px solid var(--border);
    background: var(--card);
    color: var(--muted);
    border-radius: var(--radius);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all .15s;
}
.tabs button:hover { border-color: #c7d2fe; color: var(--primary); }
.tabs button.active {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
    box-shadow: 0 2px 8px rgba(37, 99, 235, .25);
}

.card {
    background: var(--card);
    border-radius: 14px;
    box-shadow: var(--shadow);
    padding: 20px;
    border: 1px solid #f1f3f7;
}

.panel-desc { color: var(--muted); font-size: 14px; margin-bottom: 16px; }

.field { margin-bottom: 14px; }
.field label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 6px; }
.field label .req { color: var(--err); margin-left: 2px; }
.field input {
    width: 100%;
    padding: 11px 12px;
    border: 1px solid var(--border);
    border-radius: 10px;
    font-size: 16px;              /* ≥16px 可避免 iOS 聚焦时自动放大页面 */
    outline: none;
    background: #fff;
    transition: border-color .15s, box-shadow .15s;
}
.field input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37, 99, 235, .12); }

.captcha-row { display: flex; gap: 10px; align-items: center; margin-bottom: 16px; }
.captcha-row input {
    flex: 1; min-width: 0; padding: 11px 12px; border: 1px solid var(--border);
    border-radius: 10px; font-size: 16px; outline: none;
}
.captcha-row input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37, 99, 235, .12); }
.captcha-row img {
    height: 46px; flex: 0 0 auto;
    border: 1px solid var(--border);
    border-radius: 10px;
    cursor: pointer;
    background: #f3f6fb;
    display: block;
}

button.submit {
    width: 100%;
    padding: 12px;
    background: var(--primary);
    color: #fff;
    border: 0;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: background .15s;
}
button.submit:hover { background: var(--primary-dark); }
button.submit:disabled { background: #93b4f5; cursor: not-allowed; }

.result { margin-top: 20px; }
.result .msg {
    padding: 12px 14px;
    border-radius: var(--radius);
    font-size: 14px;
    margin-bottom: 12px;
}
.result .msg.error { background: var(--err-soft); color: var(--err); border: 1px solid #fecaca; }
.result .msg.empty { background: var(--warn-soft); color: var(--warn); border: 1px solid #fde68a; }
.result .msg.ok { background: var(--ok-soft); color: var(--ok); border: 1px solid #a7f3d0; }

.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius); }
table.grid { width: 100%; border-collapse: collapse; font-size: 14px; }
table.grid th, table.grid td { padding: 10px 12px; border-bottom: 1px solid var(--border); text-align: left; white-space: nowrap; }
table.grid th { background: var(--primary-soft); color: #1e40af; font-weight: 600; }
table.grid tr:last-child td { border-bottom: 0; }
table.grid tr.qr-tr td { padding: 0; background: #fcfdff; }
table.grid tr.qr-tr .qr-box { border-top: 1px dashed var(--border); margin: 0; padding: 14px 12px; }
/* 列很多时给个横向滚动提示 */
.scroll-hint { font-size: 12px; color: var(--muted); margin: 6px 0 0; }

.cards { display: grid; gap: 12px; }
@media (min-width: 900px) {
    .cards.cards-2 { grid-template-columns: 1fr 1fr; }
}
.info-card {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 14px 16px;
    background: linear-gradient(180deg, #fff, #fbfdff);
}
.info-card .big {
    font-size: 18px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 10px;
    padding-bottom: 8px;
    border-bottom: 1px dashed var(--border);
}
.kv { display: flex; flex-wrap: wrap; gap: 4px 16px; }
.kv .item { min-width: 45%; display: flex; font-size: 14px; padding: 3px 0; }
.kv .k { color: var(--muted); margin-right: 6px; }
.kv .v { font-weight: 600; word-break: break-all; }

/* 入学注意事项 */
.notice-card {
    margin-top: 18px;
    background: var(--warn-soft);
    border: 1px solid #fde68a;
    border-radius: 12px;
    padding: 14px 16px;
}
.notice-card-title {
    font-weight: 700;
    color: var(--warn);
    font-size: 14px;
    margin-bottom: 6px;
}
.notice-card-body {
    color: #4b5563;
    font-size: 14px;
    line-height: 1.85;
    white-space: pre-wrap;
    word-break: break-word;
}

/* ===== 班级群二维码 ===== */
.qr-box {
    margin-top: 14px;
    padding-top: 14px;
    border-top: 1px dashed var(--border);
    text-align: center;
}
.qr-label {
    font-size: 13px; font-weight: 600; color: var(--primary);
    margin-bottom: 10px;
}
/* 外层白框：模拟"带白边的码"，微信识别率更高 */
.qr-frame {
    display: inline-block;
    padding: 8px;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 14px;
    box-shadow: 0 1px 3px rgba(16, 24, 40, .06);
    transition: box-shadow .15s, transform .15s;
}
.qr-frame:hover { box-shadow: 0 6px 16px rgba(16, 24, 40, .14); }
/* 关键：保留系统长按菜单（微信"识别图中二维码"依赖它） */
.qr-img {
    display: block;
    width: 168px; height: 168px; max-width: 100%;
    object-fit: contain;
    border-radius: 8px;
    background: #fff;
    cursor: zoom-in;
    -webkit-touch-callout: default;
    -webkit-user-select: auto;
    user-select: auto;
}
.qr-tip { font-size: 12px; color: var(--muted); margin-top: 8px; line-height: 1.6; }
.qr-hint { font-size: 12px; color: var(--muted); margin-top: 4px; }
.qr-hint-mob { display: none; }
/* 触屏设备显示"长按识别"，鼠标设备显示"点击放大" */
@media (pointer: coarse) {
    .qr-hint-desk { display: none; }
    .qr-hint-mob { display: block; }
}

.qr-overlay {
    position: fixed; left: 0; top: 0; right: 0; bottom: 0; z-index: 999;
    background: rgba(15, 23, 42, .82);
    display: flex; align-items: center; justify-content: center;
    padding: 16px;
}
.qr-overlay-inner { text-align: center; max-width: 100%; }
.qr-overlay-title { color: #fff; font-weight: 600; margin-bottom: 12px; font-size: 14px; }
.qr-overlay-pad {
    display: inline-block; background: #fff; padding: 14px; border-radius: 16px;
}
.qr-overlay img {
    display: block; width: min(80vw, 380px); height: auto;
    max-height: 70vh; object-fit: contain;
}
.qr-overlay-tip { color: #cbd5e1; font-size: 13px; margin-top: 14px; }
.qr-save {
    display: inline-block; margin-top: 12px; padding: 8px 18px;
    border: 1px solid rgba(255,255,255,.5); border-radius: 999px;
    color: #fff; text-decoration: none; font-size: 13px;
}

footer { text-align: center; margin-top: 28px; color: #9ca3af; font-size: 13px; }
footer a { color: #9ca3af; text-decoration: none; }
footer a:hover { color: var(--primary); }

.spinner {
    display: inline-block; width: 14px; height: 14px;
    border: 2px solid rgba(255,255,255,.4); border-top-color: #fff;
    border-radius: 50%; animation: spin .7s linear infinite; vertical-align: -2px; margin-right: 6px;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ===== 大屏（电脑） ===== */
@media (min-width: 1024px) {
    .wrap { max-width: 880px; }
    .hero { padding: 30px 8px 30px; }
    .hero h1 { font-size: 28px; }
    .card { padding: 26px; }
    .field input, .captcha-row input { padding: 12px 14px; }
}

/* ===== 平板 ===== */
@media (max-width: 1023px) and (min-width: 641px) {
    .wrap { max-width: 680px; }
}

/* ===== 手机：表格转卡片，二维码放大到方便长按 ===== */
@media (max-width: 640px) {
    .wrap {
        padding: 16px 12px calc(32px + env(safe-area-inset-bottom));
    }
    .hero { padding: 16px 4px 20px; }
    .hero h1 { font-size: 21px; }
    .hero p { font-size: 13px; }
    .card { padding: 16px 14px; border-radius: 12px; }
    .tabs button { padding: 11px 8px; font-size: 14px; }
    .kv .item { min-width: 100%; }

    /* 表格 → 每张记录一张卡 */
    .table-wrap { border: 0; border-radius: 0; overflow: visible; background: transparent; }
    table.grid { display: block; width: 100%; }
    table.grid thead { display: none; }
    table.grid tbody { display: block; }
    table.grid tr {
        display: block; margin-bottom: 12px; background: #fff;
        border: 1px solid var(--border); border-radius: 12px; overflow: hidden;
    }
    table.grid td {
        display: flex; gap: 12px; align-items: baseline;
        padding: 9px 12px; white-space: normal; border-bottom: 1px solid var(--border);
    }
    table.grid td::before {
        content: attr(data-label);
        flex: 0 0 6.5em; color: var(--muted); font-size: 13px;
    }
    table.grid td > span.vgrow { flex: 1; word-break: break-all; font-weight: 600; }
    table.grid td:last-child { border-bottom: 0; }
    /* 二维码行：与上面那条记录拼成同一张卡 */
    table.grid tr.qr-tr {
        margin-top: -13px; border-top: 0;
        border-radius: 0 0 12px 12px;
    }
    table.grid tr.qr-tr td { display: block; padding: 0; border-bottom: 0; }
    table.grid tr.qr-tr td::before { content: none; }
    table.grid tr.qr-tr .qr-box {
        margin: 0; padding: 14px 12px; border-top: 1px dashed var(--border);
    }

    /* 二维码：手机上尽量大，方便微信长按识别 */
    .qr-frame { padding: 10px; border-radius: 16px; }
    .qr-img { width: min(66vw, 250px); height: min(66vw, 250px); }
    .qr-label { font-size: 14px; }
    .qr-tip, .qr-hint { font-size: 13px; }

    .info-card { padding: 13px 14px; }
    .info-card .big { font-size: 17px; }
    footer { font-size: 12px; }
}

@media (max-width: 380px) {
    .hero h1 { font-size: 19px; }
    .tabs button { font-size: 13px; padding: 10px 6px; }
    table.grid td::before { flex-basis: 5.5em; }
}