* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: #f2f5f9;
    color: #222;
    font-family: "Microsoft YaHei", SimSun, Arial, sans-serif;
    font-size: 15px;
    line-height: 1.6;
}

a {
    color: #1f5fbf;
}

.mobile-bg {
    min-height: 100vh;
}

.phone-shell {
    width: 94%;
    max-width: 480px;
    margin: 0 auto;
    padding: 18px 0 30px;
}

.phone-shell.wide {
    max-width: 820px;
}

.hero-card,
.card,
.pass-card {
    background: #fff;
    border: 1px solid #ccd7e6;
    padding: 18px;
    margin-bottom: 14px;
}

.hero-card {
    border-top: 5px solid #2b63b7;
}

h1 {
    margin: 0 0 10px;
    color: #123b73;
    font-size: 26px;
    line-height: 1.25;
}

h2 {
    margin: 0 0 12px;
    color: #123b73;
    font-size: 20px;
}

.muted,
.hero-card p,
.card p {
    color: #566;
}

.hero-actions {
    display: flex;
    gap: 10px;
    margin-top: 16px;
    flex-wrap: wrap;
}

.btn {
    min-height: 40px;
    border: 1px solid #9db7dd;
    padding: 8px 16px;
    background: #eef4ff;
    color: #174c9a;
    text-decoration: none;
    font-weight: bold;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.btn.primary {
    color: #fff;
    background: #2b63b7;
    border-color: #2b63b7;
}

.btn.ghost {
    color: #174c9a;
    background: #fff;
}

.btn.small {
    min-height: 34px;
    padding: 6px 11px;
    font-size: 13px;
}

.grid-two {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}

.grid-two > div {
    border: 1px solid #d8e2f0;
    padding: 12px;
    background: #f8fbff;
}

.grid-two strong {
    color: #174c9a;
}

.admin-link {
    display: block;
    width: fit-content;
    margin: 16px auto 0;
    color: #555;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

label {
    display: grid;
    gap: 5px;
    color: #222;
    font-weight: bold;
}

.required-star {
    color: #d40000;
}

input,
select,
textarea {
    width: 100%;
    min-height: 38px;
    border: 1px solid #b9c7d9;
    background: #fff;
    padding: 7px 9px;
    color: #222;
    font: inherit;
}

textarea {
    resize: vertical;
}

.full,
.official-fields,
.companion-box {
    grid-column: 1 / -1;
}

.official-fields,
.companion-box {
    border: 1px solid #cdd9e8;
    background: #f8fbff;
}

.official-fields {
    display: none;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
    padding: 14px;
}

.official-fields.visible {
    display: grid;
}

.companion-box {
    padding: 14px;
}

.companion-row {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 8px;
    margin-bottom: 8px;
}

.section-title {
    color: #123b73;
    font-size: 17px;
    font-weight: bold;
    margin-bottom: 10px;
    border-bottom: 1px solid #d8e2f0;
    padding-bottom: 6px;
}

.alert {
    color: #b00000;
    background: #fff4f4;
    border: 1px solid #efb5b5;
    padding: 8px 10px;
    margin-bottom: 12px;
}

.result-row {
    display: flex;
    justify-content: space-between;
    gap: 14px;
    border: 1px solid #d8e2f0;
    background: #fafcff;
    padding: 12px;
    margin-bottom: 10px;
}

.result-row p {
    margin: 4px 0 0;
    color: #555;
}

.pass-card {
    text-align: center;
    color: #fff;
}

.pass-card h1 {
    color: #fff;
}

.pass-valid {
    background: #6f42c1;
    border-color: #5e35a8;
}

.pass-invalid {
    background: #777;
    border-color: #666;
}

.qr {
    width: 220px;
    height: 220px;
    max-width: 100%;
    background: #fff;
    padding: 10px;
    margin: 15px auto;
    border: 1px solid rgba(255, 255, 255, .5);
}

.pass-info {
    text-align: left;
    display: grid;
    gap: 0;
    margin-top: 6px;
}

.pass-info p {
    display: flex;
    justify-content: space-between;
    gap: 15px;
    margin: 0;
    padding: 8px 0;
    border-bottom: 1px solid rgba(255, 255, 255, .35);
}

.pass-info strong {
    text-align: right;
}

.note {
    margin-top: 12px;
    padding: 10px;
    border: 1px solid rgba(255, 255, 255, .4);
}

.empty-state {
    padding: 15px;
    border: 1px dashed #aebdd0;
    color: #555;
    background: #fbfdff;
    text-align: center;
}

@media (max-width: 680px) {
    .form-grid,
    .grid-two,
    .official-fields,
    .companion-row {
        grid-template-columns: 1fr;
    }

    .hero-actions,
    .result-row {
        display: grid;
    }

    .btn {
        width: 100%;
    }
}