:root {
    --primary-blue: #2563eb;
    --primary-blue-light: #eff6ff;
    --text-main: #111827;
    --text-muted: #6b7280;
    --bg-gray: #f8fafc;
    --border-color: #e2e8f0;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
.section-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 80px 20px;
}

.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.subtitle {
    color: var(--primary-blue);
    font-size: 14px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 12px;
    display: block;
}

.title {
    font-size: 36px;
    font-weight: 800;
    color: var(--text-main);
    margin-bottom: 16px;
}

.description {
    font-size: 16px;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto;
    margin-bottom: 10px;
}


.carriers-module {
    background: linear-gradient(180deg, #ffffff 0%, var(--bg-gray) 100%);
    border-radius: 32px;
    padding: 60px 40px;
    text-align: center;
    border: 1px solid var(--border-color);
}

.logo-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
    margin-top: 40px;
}

.logo-item {
    background: #ffffff;
    padding: 20px 40px;
    border-radius: 100px; 
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
    font-weight: 800;
    font-size: 18px;
    color: #374151;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 140px;
    border: 1px solid transparent;
}

.logo-item:hover {
    transform: translateY(-5px);
    border-color: var(--primary-blue);
    color: var(--primary-blue);
    box-shadow: 0 10px 15px -3px rgba(37, 99, 235, 0.1);
}


.steps-module {
    padding: 30px 20px;
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 60px;
    position: relative;
}

.step-card {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 40px 30px;
    position: relative;
    overflow: hidden;
    transition: 0.3s;
    z-index: 1;
}

.step-card:hover {
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.05);
    border-color: #cbd5e1;
}

/* 巨大的背景水印数字 */
.step-number-bg {
    position: absolute;
    top: -20px;
    right: -10px;
    font-size: 120px;
    font-weight: 900;
    color: var(--bg-gray);
    z-index: -1;
    line-height: 1;
    transition: 0.3s;
}

.step-card:hover .step-number-bg {
    color: var(--primary-blue-light);
    transform: scale(1.1);
}

.step-icon-wrapper {
    width: 50px;
    height: 50px;
    background: var(--primary-blue-light);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.step-icon-wrapper svg {
    width: 24px;
    height: 24px;
    fill: var(--primary-blue);
}

.step-title {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-main);
}

.step-desc {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.6;
}

/* =========================================
   模块 3: Why Trust Us? (网格布局重设)
   ========================================= */
.trust-module {
    background-color: var(--bg-gray);
    border-radius: 32px;
    padding: 80px 60px;
    display: flex;
    flex-direction: column;
}

.trust-header {
    text-align: left;
    margin-bottom: 40px;
}

.trust-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
}

.trust-card {
    background: #ffffff;
    padding: 35px;
    border-radius: 20px;
    border-left: 4px solid var(--primary-blue);
    box-shadow: 0 4px 6px rgba(0,0,0,0.02);
}

.trust-card h4 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.trust-card p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
}

.howto-module {
    margin-top: 40px;
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: 32px;
    padding: 60px;
}

.howto-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.howto-content h2 {
    font-size: 32px;
    font-weight: 800;
    margin-bottom: 24px;
    color: var(--text-main);
}

.howto-list {
    list-style: none;
}

.howto-step {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
    padding: 20px;
    border-radius: 16px;
    transition: 0.3s;
}

.howto-step:hover {
    background: var(--primary-blue-light);
}

.step-circle {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    background: var(--primary-blue);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 14px;
}

.step-info h4 {
    font-size: 18px;
    margin-bottom: 8px;
    color: var(--text-main);
}

.step-info p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.6;
}

.howto-image-box {
    background: var(--bg-gray);
    border-radius: 24px;
    padding: 40px;
    text-align: center;
    border: 1px dashed var(--border-color);
}

.app-module-light {
margin-top: 40px;
background: linear-gradient(135deg, #ffffff 0%, #f0f7ff 100%); /* 替换掉黑色，改为纯净渐变 */
border: 1px solid #e2e8f0;
border-radius: 32px;
padding: 0 60px;
display: flex;
align-items: center;
overflow: hidden;
position: relative;
}

.app-module-light::before {
content: '';
position: absolute;
top: -50%;
right: -10%;
width: 400px;
height: 400px;
background: radial-gradient(circle, rgba(37, 99, 235, 0.05) 0%, transparent 70%);
z-index: 0;
}

.app-image-side {
flex: 1;
padding-top: 60px;
display: flex;
justify-content: center;
z-index: 1;
}

.phone-mockup-light {
width: 260px;
height: 420px;
background: #ffffff;
/* border: 10px solid #1e293b;
border-bottom: none;
border-radius: 36px 36px 0 0;
box-shadow: 0 30px 60px rgba(0, 0, 0, 0.1); */
}

.app-text-side {
flex: 1.2;
padding: 80px 0 80px 40px;
z-index: 1;
}

.app-text-side h2 {
font-size: 36px;
font-weight: 800;
color: #0f172a;
margin-bottom: 20px;
line-height: 1.2;
}

.app-features-light {
display: flex;
flex-wrap: wrap;
gap: 12px;
margin-bottom: 30px;
}

.feature-tag-light {
background: #ffffff;
color: #475569;
padding: 8px 16px;
border-radius: 12px;
font-size: 14px;
font-weight: 600;
border: 1px solid #e2e8f0;
box-shadow: 0 2px 4px rgba(0,0,0,0.02);
}

.store-buttons-light {
display: flex;
gap: 16px;
}

.btn-download {
background: #0f172a;
color: #ffffff;
padding: 12px 24px;
border-radius: 14px;
display: flex;
align-items: center;
gap: 12px;
transition: all 0.3s ease;
cursor: pointer;
}

.btn-download:hover {
background: #2563eb;
transform: translateY(-3px);
box-shadow: 0 10px 20px rgba(37, 99, 235, 0.2);
}

.btn-download .btn-label {
font-size: 10px;
text-transform: uppercase;
display: block;
opacity: 0.8;
}

.btn-download .btn-name {
font-size: 16px;
font-weight: 700;
}

@media (max-width: 992px) {
.app-module-light { flex-direction: column; padding: 60px 20px 0; text-align: center; }
.app-text-side { padding: 0 0 60px 0; }
.store-buttons-light { justify-content: center; }
}

.app-screen-content {
padding: 20px;
}

.app-screen-status-bar {
height: 4px;
width: 30px;
background: #e2e8f0;
border-radius: 2px;
margin: 0 auto 20px;
}

.app-screen-header {
height: 40px;
background: #f8fafc;
border-radius: 8px;
margin-bottom: 15px;
border: 1px solid #edf2f7;
}

.app-screen-card {
height: 100px;
background: #f8fafc;
border-radius: 12px;
border: 1px solid #edf2f7;
padding: 15px;
}

.app-screen-progress {
width: 40%;
height: 6px;
background: #3b82f6;
border-radius: 3px;
margin-bottom: 10px;
}

.app-screen-bar {
width: 100%;
height: 6px;
background: #e2e8f0;
border-radius: 3px;
margin-bottom: 6px;
}

.app-screen-bar:last-child {
width: 80%;
margin-bottom: 0;
}

.logo-item-ups { color: #FFB500; }
.logo-item-usps { color: #004B87; }
.logo-item-dhl { color: #D40511; }
.logo-item-fedex { color: #4D148C; }
.logo-item-laposte { color: #00427A; }
.logo-item-postnl { color: #FFCC00; }

.howto-box-emoji {
font-size: 80px;
margin-bottom: 20px;
}

.howto-box-title {
margin-bottom: 10px;
}

.howto-box-desc {
color: var(--text-muted);
font-size: 14px;
}

.howto-box-progress {
margin-top: 30px;
height: 8px;
background: #e2e8f0;
border-radius: 4px;
overflow: hidden;
}

.howto-box-progress-bar {
width: 75%;
height: 100%;
background: var(--primary-blue);
}

.howto-box-status {
font-size: 12px;
margin-top: 10px;
color: var(--primary-blue);
font-weight: 600;
}

.container{
max-width:1000px;
margin:auto;
padding:60px 20px;
}

.section-tag{
font-size:12px;
text-transform:uppercase;
letter-spacing:2px;
color:#4f7cff;
font-weight:600;
}

.carrier-title{
font-size:38px;
font-weight:800;
margin:10px 0;
}

.carrier-header{
display:flex;
align-items:center;
gap:24px;
margin-bottom:28px;
}

.carrier-logo-wrapper{
flex-shrink:0;
width:80px;
height:80px;
display:flex;
align-items:center;
justify-content:center;
background:#fff;
border-radius:16px;
box-shadow:0 4px 12px rgba(0,0,0,0.08);
padding:12px;
}

.carrier-logo{
max-width:100%;
max-height:100%;
object-fit:contain;
}

.carrier-title-wrap{
flex:1;
}

.carrier-name-local{
color:#9ca3af;
font-size:15px;
margin-top:4px;
font-weight:500;
}

.carrier-desc-box{
display:flex;
align-items:flex-start;
gap:16px;
background:linear-gradient(135deg, #f0f7ff 0%, #faf5ff 100%);
border-radius:16px;
padding:20px 24px;
margin-bottom:32px;
border-left:4px solid #4f7cff;
}

.carrier-desc-box .desc-icon{
flex-shrink:0;
width:40px;
height:40px;
display:flex;
align-items:center;
justify-content:center;
background:#fff;
border-radius:10px;
color:#4f7cff;
box-shadow:0 2px 8px rgba(79,124,255,0.15);
}

.carrier-desc-box .carrier-desc{
color:#374151;
font-size:16px;
line-height:1.7;
margin:0;
flex:1;
}

.about-header{
display:flex;
align-items:center;
gap:12px;
margin-bottom:16px;
}

.about-icon{
width:36px;
height:36px;
display:flex;
align-items:center;
justify-content:center;
background:linear-gradient(135deg, #4f7cff 0%, #7c3aed 100%);
border-radius:10px;
color:#fff;
}

.about-header h3{
margin:0;
font-size:20px;
font-weight:700;
color:#111827;
}

.about-body{
color:#6b7280;
font-size:15px;
line-height:1.85;
margin-bottom:20px;
}

.profile-card{
display:grid;
grid-template-columns:1fr auto;
gap:32px;
background:#fff;
border-radius:20px;
padding:32px;
box-shadow:0 10px 25px rgba(0,0,0,0.05);
margin-bottom:40px;
}

.profile-content{
min-width:0;
}

.profile-sidebar{
min-width:200px;
}

.tracking-format-box{
background:linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
border-radius:14px;
padding:20px;
border:1px solid #e2e8f0;
}

.tracking-format-box .format-label{
display:block;
font-size:12px;
text-transform:uppercase;
letter-spacing:1px;
color:#6b7280;
margin-bottom:10px;
font-weight:600;
}

.tracking-format-box .format-example{
display:block;
font-family:'SF Mono',Monaco,'Courier New',monospace;
font-size:14px;
color:#111827;
background:#fff;
padding:10px 14px;
border-radius:8px;
border:1px solid #e2e8f0;
word-break:break-all;
margin-bottom:8px;
}

.tracking-format-box .format-regex{
display:block;
font-size:11px;
color:#9ca3af;
font-family:'SF Mono',Monaco,'Courier New',monospace;
}

.btn-primary{
display:inline-flex;
align-items:center;
gap:8px;
padding:14px 24px;
background:linear-gradient(135deg, #4f7cff 0%, #2563eb 100%);
color:#fff;
border-radius:12px;
text-decoration:none;
font-weight:600;
font-size:15px;
box-shadow:0 4px 12px rgba(79,124,255,0.3);
transition:all 0.2s ease;
}

.btn-primary:hover{
transform:translateY(-2px);
box-shadow:0 6px 16px rgba(79,124,255,0.4);
}

@media (max-width:768px){
.carrier-profile .profile-card{
grid-template-columns:1fr;
}
.profile-sidebar{
min-width:auto;
}
.carrier-header{
flex-direction:column;
text-align:center;
}
.carrier-desc-box{
flex-direction:column;
text-align:center;
}
}

.profile-card{
background:#fff;
border-radius:20px;
padding:35px;
box-shadow:0 10px 25px rgba(0,0,0,0.05);
margin-bottom:40px;
}

.profile-content h3{
font-size:20px;
margin-bottom:12px;
}

.profile-content p{
color:#6b7280;
line-height:1.8;
}

.btn-primary{
display:inline-block;
margin-top:20px;
padding:12px 20px;
background:#4f7cff;
color:#fff;
border-radius:8px;
text-decoration:none;
font-weight:600;
}

.info-grid{
display:grid;
gap:20px;
}

.info-card{
padding:25px;
border-radius:16px;
background:#fff;
box-shadow:0 5px 15px rgba(0,0,0,0.05);
}

.info-card h4{
margin-bottom:8px;
font-size:18px;
}

.info-card p{
color:#6b7280;
font-size:14px;
}

.info-card a{
color:#4f7cff;
text-decoration:none;
font-weight:500;
}

.tracking-format{
margin-top:15px;
}

.tracking-format code{
background:#f3f4f6;
padding:6px 10px;
border-radius:6px;
}

.section-title{
font-size:28px;
font-weight:800;
margin-bottom:40px;
text-transform:uppercase;
}

.section-title.center{
text-align:center;
}

.status-list{
display:grid;
grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
gap:20px;
}

.status-card{
background:#fff;
padding:25px;
border-radius:16px;
border:1px solid #eee;
}

.status-number{
display:inline-block;
font-weight:700;
margin-bottom:10px;
color:#4f7cff;
}

.status-card.active{
border-color:#4f7cff;
}

.status-card h4{
margin-bottom:6px;
}

.status-card p{
color:#6b7280;
font-size:14px;
}

.carrier-faq{
background:#fafafa;
}

.faq-grid{
display:grid;
gap:20px;
}

.faq-card{
background:#fff;
padding:25px;
border-radius:16px;
border:1px solid #eee;
}

.faq-card h4{
font-size:16px;
margin-bottom:10px;
}

.faq-card p{
font-size:14px;
color:#6b7280;
line-height:1.6;
}
.app_icon{
    width: 100%;
    height: auto;
}

@media (max-width: 768px) {
    .trust-grid {
        grid-template-columns: 1fr;
    }
    .trust-module {
        padding: 40px 20px;
    }
    .carriers-module {
        padding: 40px 20px;
    }
    .howto-grid {
        grid-template-columns: 1fr;
    }
    .section-container{
        padding: 40px 10px;
    }
    .title{
        font-size: 28px;
    }
    .howto-module{
        padding: 10px;
    }
    .app-module-light{
        padding: 0;
        margin-top: 0;
    }
    .app-text-side{
        padding: 10px;
    }
}