* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    font-family: "PingFang SC", "Helvetica Neue", Arial, sans-serif;
    background-color: #f8f9fa;
    color: #333;
    line-height: 1.6;
}
.container {
    max-width: 750px;
    margin: 0 auto;
    padding: 5px;
}
.header {
    text-align: center;
    margin-bottom: 20px;
    padding: 15px;
    background: linear-gradient(135deg, #1E9FFF, #0d8bf2);
    color: white;
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(30, 159, 255, 0.3);
}
.header h1 {
    font-size: 22px;
    margin: 10px 0;
}
.header p {
    font-size: 14px;
    opacity: 0.9;
}
.banner-img {
    width: 100%;
    margin-bottom: 20px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}
.form-section {
    background: white;
    border-radius: 10px;
    padding: 20px;
    margin-bottom: 25px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}
.form-title {
    font-size: 16px;
    margin-bottom: 15px;
    color: #5FB878;
    padding-bottom: 10px;
    border-bottom: 1px solid #eee;
    display: flex;
    align-items: center;
}
.form-title i {
    margin-right: 8px;
    font-size: 18px;
}
.form-group {
    margin-bottom: 20px;
    position: relative;
}
.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #555;
    position: relative;
}
.form-label.required:after {
    content: '*';
    color: #ff5722;
    margin-left: 4px;
}
.form-input {
    width: 100%;
    padding: 12px 15px;
    border: none;
    border-radius: 8px;
    background-color: #f8f9fa;
    font-size: 15px;
    transition: all 0.3s;
    box-shadow: inset 0 1px 3px rgba(0,0,0,0.1);
}
.form-input:focus {
    outline: none;
    background-color: #fff;
    box-shadow: inset 0 1px 3px rgba(0,0,0,0.1), 0 0 0 2px rgba(30, 159, 255, 0.2);
}
.error-message {
    color: #ff5722;
    font-size: 12px;
    margin-top: 5px;
    display: none;
}
.checkbox-group {
    margin-top: 10px;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
}
.checkbox-item {
    display: inline-block;
    width: 32%;
    margin-bottom: 10px;
    position: relative;
}
.checkbox-item input[type="checkbox"] {
    display: none;
}
.checkbox-item label {
    display: block;
    padding: 10px 12px;
    background-color: #f8f9fa;
    border-radius: 6px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s;
    font-size: 14px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}
.checkbox-item input[type="checkbox"]:checked + label {
    background-color: #1E9FFF;
    color: white;
    box-shadow: 0 2px 5px rgba(30, 159, 255, 0.3);
}
.checkbox-error {
    color: #ff5722;
    font-size: 12px;
    margin-top: 5px;
    display: none;
    text-align: center;
}
.submit-container {
    text-align: center;
    margin-top: 20px;
    padding-top: 10px;
    border-top: 1px dashed #eee;
}
.submit-btn {
    background: linear-gradient(135deg, #1E9FFF, #0d8bf2);
    color: white;
    height: 50px;
    line-height: 50px;
    border-radius: 25px;
    font-size: 18px;
    border: none;
    width: 90%;
    max-width: 320px;
    margin: 0 auto;
    box-shadow: 0 4px 10px rgba(30, 159, 255, 0.3);
    display: block;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
    cursor: pointer;
}
.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(30, 159, 255, 0.4);
}
.submit-btn:active {
    transform: translateY(1px);
    box-shadow: 0 2px 5px rgba(30, 159, 255, 0.3);
}
.submit-btn.loading {
    pointer-events: none;
    opacity: 0.8;
}
.submit-btn.loading:after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    animation: loading 1.5s infinite;
}
@keyframes loading {
    0% { left: -100%; }
    100% { left: 100%; }
}
.image-row {
    display: flex;
    flex-direction: column;
    margin: 20px 0;
}
.image-row img {
    width: 100%;
    margin-bottom: 0;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

/* 自定义弹窗样式 */
.custom-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 10000;
    align-items: center;
    justify-content: center;
}
.modal-content {
    background-color: white;
    width: 80%;
    max-width: 400px;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    overflow: hidden;
    animation: modalShow 0.3s ease-out;
}
@keyframes modalShow {
    from { transform: scale(0.8); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}
.modal-header {
    background: linear-gradient(135deg, #1E9FFF, #0d8bf2);
    color: white;
    padding: 20px;
    text-align: center;
    position: relative;
}
.modal-header i {
    font-size: 40px;
    margin-bottom: 10px;
    display: block;
}
.modal-header h3 {
    font-size: 18px;
    margin: 0;
}
.modal-body {
    padding: 25px 20px;
    text-align: center;
    font-size: 16px;
    line-height: 1.6;
    color: #555;
}
.modal-footer {
    padding: 15px 20px 20px;
    text-align: center;
}
.modal-btn {
    background: linear-gradient(135deg, #1E9FFF, #0d8bf2);
    color: white;
    border: none;
    padding: 10px 25px;
    border-radius: 20px;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 4px 10px rgba(30, 159, 255, 0.3);
}
.modal-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(30, 159, 255, 0.4);
}

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 60px;
    right: 15px;
    width: 50px;
    height: 50px;
    background: #1E9FFF;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.2);
    z-index: 1000;
    cursor: pointer;
    opacity: 0;
    transition: opacity 0.3s, transform 0.3s;
}
.back-to-top.show {
    opacity: 1;
}
.back-to-top:hover {
    transform: translateY(-5px);
}

@media (max-width: 480px) {
    .container {
        padding: 10px;
    }
    .form-section {
        padding: 15px;
    }
    .checkbox-item {
        width: 48%; 
    }
    .back-to-top {
        bottom: 20px;
        right: 10px;
        width: 45px;
        height: 45px;
    }
}

/* 超小屏幕适配 */
@media (max-width: 360px) {
    .checkbox-item {
        width: 48%;
    }
    .checkbox-item label {
        font-size: 13px;
        padding: 8px 6px;
    }
}

/* 精简版 Font Awesome - 只包含页面使用的图标 */
@font-face {
  font-family: 'Font Awesome 5 Free';
  font-style: normal;
  font-weight: 900;
  font-display: block;
  src: url("fonts/fa-solid-900.woff2") format("woff2");
}

.fa,
.fas {
  font-family: 'Font Awesome 5 Free';
  font-weight: 900;
  -moz-osx-font-smoothing: grayscale;
  -webkit-font-smoothing: antialiased;
  display: inline-block;
  font-style: normal;
  font-variant: normal;
  text-rendering: auto;
  line-height: 1;
}

.fa-bullhorn:before {
  content: "\f0a1";
}

.fa-arrow-up:before {
  content: "\f062";
}

.fa-check-circle:before {
  content: "\f058";
}