html {
  overflow-y: scroll;
}
body {
	font-family: system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
	margin: 0;
	padding: 0;
	background-color: #f8f9fa;
	min-height: 100vh;
	display: flex;
	flex-direction: column
}

.navbar-brand {
	font-size: 1.5rem;
	font-weight: 600;
	color: #0d6efd!important;
	text-transform: lowercase;
	letter-spacing: -.5px
}

.nav-link {
	font-weight: 500;
	padding: .5rem 1rem!important;
	transition: color .2s ease-in-out
}

.nav-link:hover {
	color: #0d6efd!important
}

.navbar {
	box-shadow: 0 2px 4px rgba(0,0,0,.08);
	background-color: hsla(0,0%,100%,.95);
	backdrop-filter: blur(10px)
}
.user-profile{
    color: #007bff;
}
.user-email a{
    display: inline-block;
    text-decoration: none;
    transition: color 0.3s ease;
}

.user-email a:hover{
    text-decoration: underline;
}


.card{
    max-width: 960px !important;
    margin: 6.2rem auto;
    padding: 1.5rem;
    background-color: #fff;
    border-radius: 16px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    
}
.footer {
	background-color: #f8f9fa;
	padding: 1.5rem 0;
	border-top: 1px solid #dee2e6;
	margin-top: auto
}

.footer-links {
	list-style: none;
	padding: 0;
	margin: 0
}

.footer-links li {
	display: inline-block;
	margin-right: 1.5rem
}

.footer-links a {
	color: #6c757d;
	text-decoration: none;
	transition: color .2s ease-in-out
}

.footer-links a:hover {
	color: #0d6efd
}

.user-info {
	color: #6c757d;
	font-size: .875rem
}

.main-content {
    margin-top: 4rem;
}

.upload-container,.cloud-storage-container,.privacy-container,.terms-container,.quick-start-container {
    max-width: 960px !important;
    margin: 2.2rem auto;
    padding: 2.5rem;
    background-color: #fff;
    border-radius: 16px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}

.privacy-container h2,.terms-container h2,.quick-start-container h2{font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: #222;
}
.privacy-container h3,.terms-container h3,.quick-start-container h3{font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: #222;
}
.page-title {
	font-size: 1.75rem;
	font-weight: 600;
	color: #2c3e50;
	margin-bottom: 1.5rem;
	text-align: center
}

.form-label {
	font-weight: 500;
	color: #495057;
	margin-bottom: .5rem
}

.form-control {
	border: 1.5px solid #dee2e6;
	border-radius: 8px;
	padding: .75rem 1rem;
	transition: all .2s ease-in-out
}

.form-control:focus {
	border-color: #0d6efd;
	box-shadow: 0 0 0 .25rem rgba(13,110,253,.15)
}

.package-size-group {
	display: flex;
	gap: 12px;
	margin-bottom: 1rem
}

.package-size-option {
	flex: 1
}

.package-size-option label {
	display: block;
	padding: 12px;
	border: 1.5px solid #dee2e6;
	border-radius: 8px;
	cursor: pointer;
	transition: all .2s ease-in-out;
	text-align: center;
	font-weight: 500
}

.package-size-option input[type=radio] {
	display: none
}

.package-size-option input[type=radio]:checked+label {
	background-color: #0d6efd;
	color: #fff;
	border-color: #0d6efd;
	transform: translateY(-1px);
	box-shadow: 0 4px 12px rgba(13,110,253,.2)
}

.package-size-option label:hover {
	border-color: #0d6efd;
	transform: translateY(-1px)
}

.submit-btn,.upload-btn {
	padding: .75rem 2rem;
	font-weight: 500;
	border-radius: 8px;
	transition: all .2s ease-in-out;
	width: auto;
	min-width: 200px;
	margin: 1rem auto;
	display: block
}

.submit-btn:hover,.upload-btn:hover {
	transform: translateY(-1px);
	box-shadow: 0 4px 12px rgba(13,110,253,.2)
}

.progress {
	height: 20px;
	border-radius: 6px;
	background-color: #e9ecef;
	margin-top: 1.5rem
}

.progress-bar {
	border-radius: 6px;
	transition: width .3s ease-in-out
}

.upload-status {
	margin-top: 1rem;
	border-radius: 8px
}

.meta-info {
	text-align: center;
	margin-top: 1rem
}

.current-time,.meta-info {
	color: #6c757d;
	font-size: .875rem
}

.current-time {
	text-align: right;
	margin-bottom: 1rem
}


.hero-section {
    position: relative;
    padding: 100px 20px;
    background: linear-gradient(135deg, #0d6efd, #4d94ff, #6f8dff);
    color: #fff;
    overflow: hidden;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
}

.hero-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 125px;
    max-width: 1200px;
    margin: 0 auto;
}

.hero-content {
    max-width: 600px;
    text-align: left;
    animation: fadeInUp 1s ease-out;
}

.hero-content h1 {
    font-size: 3.2rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    line-height: 1.2;
    color: #fff;
    text-shadow: 1px 1px 5px rgba(0, 0, 0, 0.2);
}

.hero-content .subtitle {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 2rem;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
    align-items: center;
}

.primary-btn {
    background: #ffcc00;
    color: #222;
    padding: 0.8rem 1.8rem;
    border-radius: 50px;
    font-weight: 600;
    box-shadow: 0 4px 15px rgba(255, 204, 0, 0.4);
    text-decoration: none;
    transition: all 0.3s ease;
}

.primary-btn:hover {
    background: #ffaa00;
    box-shadow: 0 6px 20px rgba(255, 170, 0, 0.4);
}

.secondary-btn {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    padding: 0.8rem 1.8rem;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
}

.secondary-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: #fff;
}

.credits-info {
    margin-top: 1rem;
    font-size: 1rem;
    color: #f8f9fa;
}

.credits-info i {
    color: gold;
    font-size: 1.3rem;
}

.hero-image {
    max-width: 400px;
    animation: fadeInRight 1s ease-out;
}

.hero-image-inner {
    width: 250px;
    height: 250px;
    background-image: url(/assets/sendsplit-index.svg);
    background-repeat: no-repeat;
    background-position: center;
    background-size: contain;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@media (max-width: 768px) {
    .hero-container {
        flex-direction: column;
        text-align: center;
    }

    .hero-content {
        text-align: center;
    }

    .hero-image {
        margin-top: 20px;
        max-width: 80%;
    }
}


.theme-svg-container {
	display: flex;
	justify-content: center;
	align-items: center;
	padding: 25px;
	background: #f8f9fa;
	max-width: 1200px
}

.theme-svg-background {
	width: 1024px;
	height: 298px;
	background-image: url(/assets/sendsplit-how.svg);
	background-repeat: no-repeat;
	background-position: 50%;
	background-size: contain;
	transition: transform .3s ease
}

/* General Section Styling */
.features-section {
    padding: 80px 0;
    background: #f8f9fa;
    text-align: center;
}

.section-header {
    max-width: 700px;
    margin: 0 auto 50px;
    padding: 0 20px;
}

.section-header h2 {
    font-size: 2.4rem;
    color: #2c3e50;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.section-subtitle {
    color: #7a7d80;
    font-size: 1.1rem;
    line-height: 1.6;
}


/* Grid Layout */
.features-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Feature Card Styling */
.feature-card {
    background: #fff;
    border-radius: 16px;
    padding: 2rem;
    transition: all 0.3s ease;
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.1);
    width: 320px;
    text-align: center;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.15);
}

/* Icon Styling */
.feature-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, #3498db, #007bff);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.feature-icon i {
    font-size: 2rem;
    color: #fff;
}

/* Feature Content */
.feature-content h3 {
    font-size: 1.5rem;
    color: #2c3e50;
    margin-bottom: 0.5rem;
}

.feature-content p {
    font-size: 1rem;
    color: #636e72;
    line-height: 1.5;
    margin-bottom: 1.2rem;
}

/* Link Styling */
.feature-link {
    display: inline-block;
    font-size: 1rem;
    font-weight: 600;
    color: #007bff;
    text-decoration: none;
    transition: color 0.3s ease;
}

.feature-link:hover {
    color: #0056b3;
    text-decoration: underline;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .features-grid {
        flex-direction: column;
        align-items: center;
    }
}

.benefits-section {
    padding: 80px 0;
    background: #f9fbfc;
    text-align: center;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr); /* 在大屏幕上始终保持 4 列 */
    gap: 32px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.benefit-item {
    background: #ffffff;
    border-radius: 18px;
    padding: 2rem;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
    animation: fadeInUp 0.6s ease-out;
}

.benefit-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.08);
}

.benefit-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #3498db, #6ab0de);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.benefit-icon i {
    font-size: 1.8rem;
    color: #ffffff;
}

.benefit-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 0.5rem;
}

.benefit-content p {
    font-size: 1rem;
    color: #6c757d;
    line-height: 1.6;
}

/* 在中等屏幕 (平板等) 调整为 2 列 */
@media (max-width: 1023px) {
    .benefits-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* 在小屏幕 (手机) 上调整为 1 列 */
@media (max-width: 599px) {
    .benefits-grid {
        grid-template-columns: repeat(1, 1fr);
    }
}

/* 让最后一个 item 在 3+1 布局下居中对齐 */
@media (max-width: 1023px) and (min-width: 600px) {
    .benefit-item:nth-child(4) {
        grid-column: span 2;
        justify-self: center;
    }
}

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.process-section {
    padding: 80px 0;
    background: #fff;
    text-align: center;
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr); /* 在桌面端保持 4 列 */
    gap: 40px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    position: relative;
}

/* 平板端 2 列 */
@media (max-width: 1023px) {
    .process-steps {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* 手机端 1 列 */
@media (max-width: 767px) {
    .process-steps {
        grid-template-columns: repeat(1, 1fr);
    }
}

.step {
    position: relative;
    text-align: center;
    padding: 20px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.step:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

/* 步骤编号的圆形图标 */
.step-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #3498db, #0d6efd);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    z-index: 2;
    position: relative;
}

/* 在步骤之间增加连接线（仅适用于桌面端） */
@media (min-width: 1024px) {
    .step::after {
        content: "";
        width: 60px;
        height: 4px;
        background: #0d6efd;
        position: absolute;
        top: 60px;
        left: calc(100% - 11px);
    }

    /* 移除最后一个步骤的连接线 */
    .step:last-child::after {
        display: none;
    }
}

.step-number {
    color: #fff;
    font-size: 1.75rem;
    font-weight: 600;
}

/* 让标题更突出 */
.step-content h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: #333;
}

/* 让描述文本更易读 */
.step-content p {
    font-size: 1rem;
    color: #666;
    max-width: 90%;
    margin: 0 auto;
}

.cta-section {
    padding: 60px 20px;
    background: linear-gradient(135deg, #0d6efd, #4d94ff 65%, #6f8dff);
    color: #fff;
    text-align: center;
}

.cta-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    max-width: 500px;
    margin: 0 auto;
}

.cta-container h2 {
    font-size: 2rem;
    font-weight: 700;
}

.cta-button {
    background: #ffcc00;
    color: #222;
    font-size: 1.2rem;
    font-weight: bold;
    padding: 12px 24px;
    border-radius: 50px;
    text-decoration: none;
    transition: all 0.3s ease-in-out;
}

.cta-button:hover {
    background: #ffaa00;
    box-shadow: 0 8px 20px rgba(255, 204, 0, 0.4);
    transform: translateY(-3px);
}

.credits-info {
    display: flex;
    align-items: center;
    gap: .75rem;
    font-size: 1rem;
    color: #fff;
    background: rgba(255, 255, 255, 0.2);
    padding: 10px 15px;
    border-radius: 8px;
}

.credits-info i {
    font-size: 1.5rem;
    color: gold;
}

.credits-features {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.credit-feature {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1rem;
    font-weight: 500;
}

.credit-feature i {
    color: #2ecc71;
    font-size: 1.2rem;
}


.additional-features {
	padding: 60px 0;
	background: linear-gradient(135deg,#f9fbff,#fff);
	text-align: center;
}

.section-header h2 {
	font-size: 2rem;
	color: #333;
	margin-bottom: 40px;
}

.features-container {
	max-width: 1200px;
	margin: 0 auto;
	padding: 0 20px;
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
	gap: 20px;
}

.feature-item {
	background: #fff;
	border-radius: 12px;
	padding: 1.5rem;
	box-shadow: 0 5px 20px rgba(0,0,0,.05);
	transition: transform .3s ease, box-shadow .3s ease;
	display: flex;
	align-items: center;
	gap: 1rem;
	border: 1px solid rgba(0,0,0,.05);
}

.feature-item:hover {
	transform: translateY(-5px);
	box-shadow: 0 10px 30px rgba(13,110,253,.15);
	border-color: rgba(13,110,253,.2);
}

.feature-icon {
	display: flex;
	align-items: center;
	justify-content: center;
	width: 50px;
	height: 50px;
	border-radius: 50%;
	background: #e9f2ff;
	flex-shrink: 0;
	transition: background .3s ease;
}

.feature-item:hover .feature-icon {
	background: #0d6efd;
}

.feature-icon i {
	font-size: 1.5rem;
	color: #0d6efd;
	transition: color .3s ease;
}

.feature-item:hover .feature-icon i {
	color: #fff;
}

.feature-text {
	color: #4a5568;
	font-size: 1rem;
	line-height: 1.5;
	text-align: left;
}


@media (max-width:768px) {
	.hero-section {
		padding: 2rem 1rem;
	}

	.hero-section h1 {
		font-size: 2.5rem
	}
	
	.hero-container{
        gap:0
    }

	.benefits-grid,.features-grid,.process-steps {
		grid-template-columns: 1fr;
		gap: 20px
	}

	.section-header h2 {
		font-size: 2rem
	}

	.credits-badge {
		display: block;
		margin: .5rem auto 0;
		width: fit-content
	}

	.credits-info {
		justify-content: center
	}

	.credits-features {
		padding: 0 1rem
	}

	.hero-image .hero-image-inner,.theme-background-section {
		display: none
	}
}

@keyframes fadeInUp {
	0% {
		opacity: 0;
		transform: translateY(20px)
	}

	to {
		opacity: 1;
		transform: translateY(0)
	}
}

.benefit-item,.feature-card,.hero-content,.hero-image,.step {
	animation: fadeInUp .6s ease-out forwards
}