@font-face {
    /* 可在此引入科技感字体，例如： */
    /* font-family: 'TechFont'; */
    /* src: url('fonts/tech-font.woff2') format('woff2'); */
}

/* ===== 全局重置 ===== */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background: #f5f7fa;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 24px;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
}

/* ===== 表单容器 — 科技风卡片 ===== */
form {
    max-width: 1200px;
    width: 100%;
    background: #ffffff;
    border-radius: 24px;
    box-shadow: 0 8px 32px rgba(18, 18, 18, 0.06), 0 2px 8px rgba(18, 18, 18, 0.03);
    padding: 40px 48px;
    transition: box-shadow 0.3s ease;
}

.divider {
    margin: 20px auto;
}

.divider .form-label {
    font-size: 28px;
}

form:hover {
    box-shadow: 0 12px 48px rgba(18, 18, 18, 0.08), 0 4px 12px rgba(18, 18, 18, 0.04);
}

/* ===== 所有文字颜色（除按钮外） ===== */
.form-label,
.form-prompt,
.form-error-info,
.form-radio,
.form-checkbox,
.form-item .form-input,
.form-item .layui-input,
.form-item .input-detail,
.form-item select,
.form-item textarea,
.form-item .form-input::placeholder,
.form-item .layui-input::placeholder,
.form-item textarea::placeholder {
    color: #121212;
}

/* ===== 表单项默认占一列 ===== */
.form-item {
    margin: 0; /* 由grid gap控制间距 */
    grid-column: span 1;
    width: 80vw;
    max-width: 1000px;
}

/* ===== 需要占满整行的表单项 ===== */
.form-item-full,
.form-telvercode,
.img-code-input,
.submit-btn-wrap,
.carousel {
    grid-column: 1 / -1;
}

/* ===== 标签 ===== */
.form-label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: #121212;
    margin-bottom: 6px;
    letter-spacing: 0.3px;
}

/* ===== 输入框通用 — 科技感边框 ===== */
.form-item .form-input,
.form-item .layui-input,
.form-item .input-detail,
.form-item select,
.form-item textarea {
    width: 100%;
    padding: 10px 14px;
    font-size: 15px;
    font-family: inherit;
    color: #121212;
    background: #ffffff;
    border: 1.5px solid #d0d5dd;
    border-radius: 12px;
    outline: none;
    transition: border-color 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
    resize: vertical;
    min-height: 44px;
    appearance: none;
    -webkit-appearance: none;
}

.form-item .form-input:focus,
.form-item .layui-input:focus,
.form-item .input-detail:focus,
.form-item select:focus,
.form-item textarea:focus {
    border-color: #3b82f6!important;
    background: #ffffff;
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.10);
}

.form-item .form-input::placeholder,
.form-item .layui-input::placeholder,
.form-item textarea::placeholder {
    color: #9aa4b3;
    font-weight: 400;
    font-size: 14px;
}

/* ===== 文本域 ===== */
.form-item textarea {
    min-height: 80px;
    line-height: 1.6;
}

/* ===== 下拉选择 ===== */
.form-item select {
    cursor: pointer;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23121212' stroke-width='1.5' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    padding-right: 40px;
}

.form-item select:focus {
    border-color: #3b82f6!important;
}

/* ===== 单选 / 多选 ===== */
.form-options {
    display: flex;
    flex-wrap: wrap;
    gap: 16px 24px;
    padding-top: 2px;
}

.form-radio,
.form-checkbox {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    color: #121212;
    cursor: pointer;
    user-select: none;
}

.form-radio input[type="radio"],
.form-checkbox input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: #3b82f6!important;
    cursor: pointer;
    flex-shrink: 0;
    margin: 0;
}

.form-radio input[type="radio"] {
    border-radius: 50%;
}

/* ===== 验证码组（手机号 + 获取验证码） ===== */
.form-telvercode {
    display: flex;
    gap: 12px;
    align-items: center;
    flex-wrap: wrap; /* 防止极窄时溢出 */
}

.form-telvercode .form-input {
    flex: 1;
    min-width: 120px;
}

.form-telvercode .submit-btn {
    flex-shrink: 0;
    padding: 10px 20px;
    font-size: 14px;
    white-space: nowrap;
    width: auto;
    min-width: 100px;
}

/* ===== 图片验证码 ===== */
.img-code-input {
    display: flex;
    gap: 12px;
    align-items: center;
    flex-wrap: wrap;
}

.img-code-input .form-input {
    flex: 1;
    min-width: 120px;
}

.img-box {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    border-radius: 12px;
    overflow: hidden;
    background: #f1f5f9;
    border: 1.5px solid #d0d5dd;
    padding: 2px;
    transition: border-color 0.25s ease;
    height: 44px;
    width: 100px;
}

.img-box:hover {
    border-color: #121212;
}

.img-code {
    height: 100%;
    width: 100%;
    object-fit: contain;
    display: block;
    border-radius: 10px;
}

/* ===== 提示文案 ===== */
.form-prompt {
    margin: 8px 0 4px 0;
    font-size: 13px;
    color: #121212;
    line-height: 1.5;
}

.form-prompt-open {
    color: #3b82f6!important;
}

/* ===== 必填标记 ===== */
.form-required {
    color: #ef4444;
    margin-left: 2px;
}

/* ===== 验证状态 ===== */
.form-valid {
    border-color: #22c55e !important;
    background: #f0fdf4 !important;
}

.form-valid:focus {
    border-color: #22c55e !important;
    box-shadow: 0 0 0 4px rgba(34, 197, 94, 0.12) !important;
}

.form-error {
    border-color: #ef4444 !important;
    background: #fef2f2 !important;
}

.form-error:focus {
    border-color: #ef4444 !important;
    box-shadow: 0 0 0 4px rgba(239, 68, 68, 0.12) !important;
}

.form-error-info {
    display: block;
    color: #ef4444;
    font-size: 12px;
    margin-top: 4px;
    line-height: 1.4;
}

/* ===== 提交按钮（占整行） ===== */
.submit-btn-wrap {
    margin-top: 4px;
}

.submit-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    font-size: 16px;
    font-weight: 500;
    font-family: inherit;
    color: #ffffff; /* 按钮文案白色 */
    background: #3b82f6!important;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: background 0.25s ease, transform 0.15s ease, box-shadow 0.25s ease;
    width: 100%;
    min-height: 48px;
    letter-spacing: 0.5px;
}

.submit-btn:hover {
    background: #2563eb;
    box-shadow: 0 4px 16px rgba(59, 130, 246, 0.30);
}

.submit-btn:active {
    transform: scale(0.98);
}

.submit-btn:focus-visible {
    outline: 2px solid #3b82f6!important;
    outline-offset: 2px;
}

/* ===== 轮播图（占整行） ===== */
.carousel img {
    width: 100%;
    border-radius: 16px;
    display: block;
}

/* ===== LayUI 兼容 ===== */
.form-item .layui-form-item {
    width: 100% !important;
    margin: 0;
}

/* ============================================================ */
/* ===== 响应式 ===== */
/* ============================================================ */

/* —— 平板及以下（< 992px）两列间距调小 —— */
@media (max-width: 991px) {
    form {
        padding: 32px 28px;
        gap: 20px 24px;
    }
}

/* —— 移动端（< 768px）切换为单列 —— */
@media (max-width: 767px) {
    body {
        padding: 16px;
        align-items: flex-start;
        padding-top: 24px;
    }

    form {
        grid-template-columns: 1fr;
        gap: 18px;
        padding: 24px 20px;
        border-radius: 20px;
        box-shadow: 0 4px 24px rgba(18, 18, 18, 0.05);
    }

    .form-item {
        grid-column: 1 / -1; /* 全部占满 */
    }

    .form-label {
        font-size: 13px;
    }

    .form-item .form-input,
    .form-item .layui-input,
    .form-item .input-detail,
    .form-item select,
    .form-item textarea {
        font-size: 16px; /* 防止 iOS 缩放 */
        padding: 10px 12px;
        min-height: 44px;
    }

    .form-options {
        gap: 12px 16px;
    }

    .form-radio,
    .form-checkbox {
        font-size: 13px;
    }

    /* 验证码组：纵向堆叠 */
    .form-telvercode {
        flex-direction: column;
        align-items: stretch;
        gap: 10px;
    }

    .form-telvercode .submit-btn {
        width: 100%;
        justify-content: center;
        min-width: unset;
    }

    /* 图片验证码纵向 */
    .img-code-input {
        flex-direction: column;
        align-items: stretch;
        gap: 10px;
    }

    .img-box {
        width: 100%;
        height: 52px;
        justify-content: center;
    }

    .img-code {
        max-width: 140px;
        height: 100%;
    }

    .img-code-input .form-input {
        width: 100% !important;
    }

    /* 提交按钮 */
    .submit-btn {
        padding: 14px 20px;
        font-size: 15px;
        min-height: 48px;
    }

    /* 轮播图 */
    .carousel img {
        border-radius: 12px;
    }
}

/* —— 大屏手机 & 小屏平板（横屏） —— */
@media (min-height: 725px) and (max-width: 767px) {
    body {
        align-items: center;
        padding: 24px;
    }
    form {
        padding: 28px 24px;
    }
}

/* —— 超小屏（< 400px） —— */
@media (max-width: 400px) {
    body {
        padding: 12px;
    }
    form {
        padding: 18px 14px;
        border-radius: 16px;
        gap: 14px;
    }

    .form-item .form-input,
    .form-item select,
    .form-item textarea {
        font-size: 14px;
        padding: 8px 10px;
        min-height: 40px;
    }

    .form-options {
        gap: 8px 12px;
    }

    .submit-btn {
        font-size: 14px;
        padding: 12px 16px;
        min-height: 44px;
    }

    .img-box {
        height: 44px;
    }
}