/* ========================================================================
   D2C-20260916-001 rebuild — How to Transfer Files from Google Drive to Dropbox
   设计源：Figma psihOgERfdZ1H3muZ9NHkQ frame 2714:19148（完全重新还原）
   令牌（节点实测）：容器 1280（区块 padding 120px 40px，≥1920 侧距 320）；
   H1 700 50 白居中；H2 700 36 #000/#FFF 居中；卡题 700 24-28/700-20/18/16；
   正文 400 18/16/14；次级 #5D5D5D；
   品牌蓝 #0055FF / 深蓝 #021A60 / 页面灰 #F9FAFC / 浅蓝 #EEF2FF /
   边框 #E5E7EB / 功能蓝 #1D70EC / 步骤数字蓝 #1149ED / 金字 #BE7E1D
   断点：≤1199 两列；≤991 收缩；≤767 单列（padding 64px 20px、H2 28px）
   2026-09-18 需求更新轮（现行 docx 20260917(2)(1)）：新增步骤内域名链接样式
   （.ot1-methods__steps a=功能蓝#1D70EC）与 Method5 锚文本链接样式
   （.ot1-methods__reco-act p a=继承灰#666、hover 下划线），其余形态不变
   ======================================================================== */

/* ---------- 基础 ---------- */
.ot1-hero,
.ot1-advantage,
.ot1-ways,
.ot1-betterfit,
.ot1-methods,
.ot1-compare,
.ot1-mobile,
.ot1-syncpromo,
.ot1-fmt,
.ot1-explore,
.ot1-support,
.ot1-reviews,
.ot1-faqs,
.ot1-cta {
    box-sizing: border-box;
}

.ot1-hero *,
.ot1-advantage *,
.ot1-ways *,
.ot1-betterfit *,
.ot1-methods *,
.ot1-compare *,
.ot1-mobile *,
.ot1-syncpromo *,
.ot1-fmt *,
.ot1-explore *,
.ot1-support *,
.ot1-reviews *,
.ot1-faqs *,
.ot1-cta * {
    box-sizing: border-box;
}

.ot1-hero h1,
.ot1-hero h2,
.ot1-hero h3,
.ot1-hero h4,
.ot1-advantage h2,
.ot1-advantage h3,
.ot1-ways h2,
.ot1-ways h3,
.ot1-ways h4,
.ot1-betterfit h2,
.ot1-betterfit h3,
.ot1-methods h2,
.ot1-methods h3,
.ot1-compare h2,
.ot1-mobile h2,
.ot1-mobile h3,
.ot1-syncpromo h2,
.ot1-syncpromo h3,
.ot1-fmt h2,
.ot1-fmt h3,
.ot1-explore h2,
.ot1-explore h3,
.ot1-support h2,
.ot1-reviews h2,
.ot1-reviews h3,
.ot1-faqs h2,
.ot1-faqs h3,
.ot1-cta h2 {
    margin: 0;
}

.ot1-sec-head {
    max-width: 1280px;
    margin: 0 auto 80px;
}

.ot1-sec-head h2 {
    font-size: 36px;
    line-height: 47px;
    font-weight: 700;
    color: #000;
    text-align: center;
}

.ot1-sec-head p {
    margin: 24px 0 0;
    font-size: 18px;
    line-height: 1.3;
    color: #000;
    text-align: center;
    overflow-wrap: break-word;
}

.ot1-sec-head--light h2,
.ot1-sec-head--light p {
    color: #FFF;
}

/* ---------- S02 hero（#021A60 + 装饰弧 + iframe 工具区） ---------- */
.ot1-hero {
    position: relative;
    background: #021A60 url("/resource/images/how-to-transfer-files-from-google-drive-to-dropbox-iw/banner-bg@2x.png") no-repeat center/cover;
    padding: 80px 0;
    overflow: hidden;
}


.ot1-hero__arc {
    position: absolute;
    display: block;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.05);
    background: transparent;
}



.ot1-hero__inner {
    position: relative;
    max-width: 1360px;
    margin: 0 auto;
    padding: 0 40px;
    text-align: center;
}

.ot1-hero__inner h1 {
    font-size: 50px;
    line-height: 65px;
    font-weight: 700;
    color: #FFF;
}

.ot1-hero__desc {
    margin: 16px 0 0;
    font-size: 18px;
    line-height: 27px;
    color: #FFF;
    font-weight: 400;
}

.ot1-hero__tool {
    margin-top: 40px;
}

.ot1-hero__tool iframe {
    display: block;
    margin: 0 auto;
    width: 1040px;
    max-width: 100%;
    height: 366px;
    border: 0;
    background: transparent;
    border-radius: 8px;
}

.ot1-hero__act {
    margin-top: 34px;
}

.ot1-hero__btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 364px;
    min-height: 61px;
    padding: 0 40px;
    background: #0055FF;
    border-radius: 8px;
    color: #FFF;
    font-size: 18px;
    font-weight: 700;
    text-decoration: none;
    white-space: nowrap;
    transition: background-color 0.15s ease;
}

@media (hover: hover) {
    .ot1-hero__btn:hover {
        background: #0046CC;
    }
}

.ot1-hero__btn:active {
    opacity: 0.9;
}

.ot1-hero__signup {
    margin: 27px 0 0;
    font-size: 14px;
    line-height: 18px;
    color: #FFF;
}

.ot1-hero__signup a {
    color: #589BFF;
    text-decoration: none;
}

@media (hover: hover) {
    .ot1-hero__signup a:hover {
        text-decoration: underline;
    }
}

.ot1-hero__third {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 24px 60px;
    margin-top: 40px;
    opacity: 0.5;
}

.ot1-hero__third img {
    display: block;
}

/* ---------- S03 advantage（stats 大卡 + 2x3 特性卡） ---------- */
.ot1-advantage {
    background: #F9FAFC;
    padding: 120px 40px;
}

.ot1-advantage__inner {
    max-width: 1280px;
    margin: 0 auto;
}

.ot1-advantage .ot1-sec-head {
    max-width: 1220px;
}

.ot1-advantage__stats {
    background: #EEF2FF;
    border-radius: 24px;
    padding: 32px 40px 36px;
    text-align: center;
}

.ot1-advantage__stats-title {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 24px;
    line-height: 31px;
    font-weight: 700;
    color: #000;
}

.ot1-advantage__stats-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0 53px;
    margin-top: 16px;
}

.ot1-advantage__stat strong {
    display: block;
    font-size: 36px;
    line-height: 47px;
    font-weight: 700;
    color: #0055FF;
}

.ot1-advantage__stat span {
    display: block;
    margin-top: 8px;
    font-size: 14px;
    line-height: 18px;
    color: #000;
}

.ot1-advantage__stats-note {
    margin: 18px 0 0;
    font-size: 12px;
    line-height: 16px;
    font-weight: 700;
    color: #000;
}

.ot1-advantage__stats-note a {
    color: #0055FF;
}

.ot1-advantage__grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 31px 16px;
    margin-top: 40px;
}

.ot1-advantage__card {
    background: #FFF;
    border: 1px solid #E5E7EB;
    border-radius: 16px;
    padding: 16px 32px 24px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.ot1-advantage__card-head {
    display: flex;
    align-items: center;
    gap: 8px;
}

.ot1-advantage__ic {
    flex: 0 0 40px;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: #EEF2FF;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.ot1-advantage__card-head h3 {
    font-size: 20px;
    line-height: 26px;
    font-weight: 700;
    color: #000;
}

.ot1-advantage__card p {
    margin: 16px 0 0;
    font-size: 14px;
    line-height: 18px;
    color: #5D5D5D;
}

/* ---------- S04 ways（Quick Try / Free Account 双卡） ---------- */
.ot1-ways {
    background: #FFF;
    padding: 120px 40px;
}

.ot1-ways__inner {
    max-width: 1280px;
    margin: 0 auto;
}

.ot1-ways__cards {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 40px;
}

.ot1-ways__card {
    border-radius: 16px;
    padding: 48px;
    background: #FFF;
    border: 1px solid #E5E7EB;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.05);
}

.ot1-ways__card--full {
    position: relative;
    border: 1px solid #0055FF;
    background: linear-gradient(180deg, #F4F7FF 0%, #FFFFFF 62%);
}

.ot1-ways__card-top {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 24px;
}

.ot1-ways__card-info h3 {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 28px;
    line-height: 36px;
    font-weight: 700;
    color: #000;
}

.ot1-ways__card-info>p {
    margin: 16px 0 0;
    font-size: 14px;
    line-height: 18px;
    color: #5D5D5D;
}

.ot1-ways__badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 15px;
    border-radius: 999px;
    font-size: 12px;
    line-height: 26px;
    font-weight: 700;
    white-space: nowrap;
}

.ot1-ways__badge--blue {
    background: #EEF2FF;
    color: #0055FF;
}

.ot1-ways__badge--gold {
    background: #FFF7E8;
    color: #BE7E1D;

}
.ot1-methods .ot1-ways__badge--gold{
    position: relative;
    font-size: 20px;
        padding: 5px 15px 5px 60px;
}
.ot1-methods .ot1-ways__badge--gold img{
        position: absolute;
    top: -9px;
    left: 9px;
}
.ot1-ways__quota {
    flex: 0 0 128px;
    min-height: 116px;
    border-radius: 12px;
    background: #EEF2FF;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 16px 8px;
    text-align: center;
}

.ot1-ways__quota strong {
    font-size: 36px;
    line-height: 47px;
    font-weight: 700;
    color: #0055FF;
}

.ot1-ways__quota span {
    font-size: 14px;
    line-height: 18px;
    color: #000;
}

.ot1-ways__chips {
    margin: 40px 0 0;
    padding: 0;
}
@media (min-width: 992px) { 
    .ot1-ways__chips {
        margin-top: 0;
    }
}
.ot1-ways__chiprow {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
}

.ot1-ways__chiprow+.ot1-ways__chiprow {
    margin-top: 16px;
}

.ot1-ways__chip {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 9px 16px;
    border-radius: 8px;
    background: #F7F8FA;
    font-size: 14px;
    line-height: 18px;
    color: #000;
}

.ot1-ways__chip img {
    flex: 0 0 16px;
}

.ot1-ways__steps h4 {
    margin: 40px 0 0;
    font-size: 16px;
    line-height: 21px;
    font-weight: 700;
    color: #000;
}

.ot1-ways__steps ol {
    list-style: none;
    margin: 24px 0 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.ot1-ways__steps li {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 14px;
    line-height: 18px;
    color: #5D5D5D;
}

.ot1-ways__steps li i {
    flex: 0 0 28px;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: #EEF2FF;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-style: normal;
    font-size: 14px;
    line-height: 18px;
    font-weight: 700;
    color: #1149ED;
}

.ot1-ways__cta {
    margin-top: 40px;
}

.ot1-ways__btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    min-height: 46px;
    border-radius: 8px;
    font-size: 16px;
    line-height: 21px;
    font-weight: 700;
    text-decoration: none;
    white-space: nowrap;
    transition: background-color 0.15s ease, color 0.15s ease;
}

.ot1-ways__btn--ghost {
    background: #FFF;
    border: 1px solid #E5E7EB;
    color: #0055FF;
}

@media (hover: hover) {
    .ot1-ways__btn--ghost:hover {
        border-color: #0055FF;
        background: #F4F8FF;
    }
}

.ot1-ways__btn--solid {
    background: #0055FF;
    color: #FFF;
}

@media (hover: hover) {
    .ot1-ways__btn--solid:hover {
        background: #0046CC;
    }
}

.ot1-ways__btn:active {
    opacity: 0.9;
}

.ot1-ways__btn .ot1-arr {
    margin-left: 10px;
}

.ot1-ways__nocard {
    margin: 12px 0 0;
    text-align: center;
    font-size: 14px;
    line-height: 18px;
    color: #000;
}

/* ---------- S05 betterfit（3x2 why 卡） ---------- */
.ot1-betterfit {
    background: #F9FAFC;
    padding: 120px 40px;
}

.ot1-betterfit__inner {
    max-width: 1280px;
    margin: 0 auto;
}

.ot1-betterfit__grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
}

.ot1-betterfit__card {
    background: #FFF;
    border: 1px solid #E5E7EB;
    border-radius: 16px;
    padding: 24px 32px 32px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.ot1-betterfit__card>img {
    width: 100px;
    height: 100px;
}

.ot1-betterfit__card h3 {
    margin-top: 16px;
    font-size: 20px;
    line-height: 26px;
    font-weight: 700;
    color: #000;
}

.ot1-betterfit__card p {
    margin: 16px 0 0;
    font-size: 16px;
    line-height: 21px;
    color: #5D5D5D;
}

/* ---------- S06 methods（左 TOC + 4 方法块 + Method5 渐变卡） ---------- */
.ot1-methods {
    background: #FFF;
    padding: 120px 40px;
}

.ot1-methods__inner {
    max-width: 1280px;
    margin: 0 auto;
}

.ot1-methods__layout {
    display: grid;
    grid-template-columns: 147px minmax(0, 1fr);
    gap: 0 85px;
    max-width: 1392px;
    margin: 0 auto;
}

.ot1-methods__nav {
    position: sticky;
    top: 100px;
    align-self: start;
    display: flex;
    flex-direction: column;
    gap: 24px;
    padding-top: 6px;
}

.ot1-methods__nav a {
    font-size: 16px;
    line-height: 21px;
    color: #000;
    text-align: right;
    text-decoration: none;
}

.ot1-methods__nav a.is-active {
    color: #0055FF;
    font-weight: 700;
}

@media (hover: hover) {
    .ot1-methods__nav a:hover {
        color: #0055FF;
    }
}

.ot1-methods__block {
    padding-bottom: 24px;
}

.ot1-methods__block+.ot1-methods__block {
    margin-top: 76px;
}

.ot1-methods__block h3 {
    font-size: 28px;
    line-height: 36px;
    font-weight: 700;
    color: #000;
    text-align: left;
}

.ot1-methods__desc {
    margin: 16px 0 0;
    padding-bottom: 24px;
    font-size: 16px;
    line-height: 21px;
    color: #000;
    border-bottom: 1px solid #E5E7EB;
}

.ot1-methods__steps {
    list-style: none;
    margin: 54px 0 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 29px;
}

.ot1-methods__steps li {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 16px;
    line-height: 21px;
    color: #000;
}

.ot1-methods__steps li strong {
    font-size: 16px;
    line-height: 26px;
    font-weight: 700;
    color: #000;
}

.ot1-methods__steps li a {
    color: #1D70EC;
    text-decoration: none;
}

@media (hover: hover) {
    .ot1-methods__steps li a:hover {
        text-decoration: underline;
    }
}

.ot1-methods__reco {
    position: relative;
    overflow: hidden;
    margin-top: 100px;
    border-radius: 16px;
    background: linear-gradient(135deg, #F6F8FF 0%, #EFF3FF 100%);
    padding: 57px 60px 70px;
}

.ot1-methods__reco-img {
    position: absolute;
    right: 0;
    bottom: 0;
    width: 320px;
    height: 210px;
}

.ot1-methods__reco h3 {
    display: flex;
    align-items: center;
    gap: 20px;
    font-size: 32px;
    line-height: 41px;
    font-weight: 700;
    color: #000;
}

.ot1-methods__reco>p {
    position: relative;
    margin: 16px 0 0;
    max-width: 800px;
    font-size: 16px;
    line-height: 21px;
    color: #000;
}

.ot1-methods__reco-act {
    position: relative;
    margin-top: 34px;
    display: inline-block;
}

.ot1-methods__reco-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 0 40px;
    border-radius: 8px;
    background: #0055FF;
    color: #FFF;
    font-size: 16px;
    line-height: 21px;
    font-weight: 700;
    text-decoration: none;
    white-space: nowrap;
    transition: background-color 0.15s ease;
}

@media (hover: hover) {
    .ot1-methods__reco-btn:hover {
        background: #0046CC;
    }
}

.ot1-methods__reco-act p {
    margin: 14px 0 0;
    text-align: center;
    font-size: 14px;
    line-height: 18px;
    color: #666;
}

.ot1-methods__reco-act p a {
    color: #666;
    text-decoration: none;
    cursor: pointer;
}

@media (hover: hover) {
    .ot1-methods__reco-act p a:hover {
        text-decoration: underline;
    }
}

/* ---------- S07 compare（20GB 对比表 + MultCloud 高亮列） ---------- */
.ot1-compare {
    background: #F9FAFC;
    padding: 120px 40px;
}

.ot1-compare__inner {
    max-width: 1280px;
    margin: 0 auto;
}

.ot1-compare__wrap {
    position: relative;
    isolation: isolate;
    background: #FFF;
    border-radius: 16px;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.05);
}

.ot1-compare__table {
    width: 100%;
    table-layout: fixed;
    border-collapse: separate;
    border-spacing: 0;
}

.ot1-compare__table col.c-aspect {
    width: 12.5%;
}

.ot1-compare__table col.c-norm {
    width: 17.5%;
}

.ot1-compare__table col.c-mc {
    width: 17.5%;
}

.ot1-compare__table th,
.ot1-compare__table td {
    height: 72px;
    padding: 8px 20px;
    font-size: 14px;
    line-height: 18px;
    color: #000;
    text-align: center;
    vertical-align: middle;
    border-bottom: 1px solid #E5E7EB;
    border-right: 1px solid #E5E7EB;
    overflow-wrap: break-word;
}

.ot1-compare__table tr>*:last-child {
    border-right: 0;
}

.ot1-compare__table thead th {
    font-weight: 700;
}

.ot1-compare__table thead th.ot1-compare__aspect {
    text-align: left;
}

.ot1-compare__table tbody tr:nth-child(even) th,
.ot1-compare__table tbody tr:nth-child(even) td:not(.ot1-compare__mcd) {
    background: #F9FAFC;
}

.ot1-compare__table tbody th {
    text-align: left;
    font-weight: 700;
}

.ot1-compare__table .ot1-compare__mc img {
    display: inline-block;
    vertical-align: middle;
}

.ot1-compare__table thead .ot1-compare__mc {
    border-right: 0;
}

/* 高亮列背景由 .ot1-compare__hl 统一提供（负层级，位于表格之下） */

.ot1-compare__table tbody .ot1-compare__mcd {
    border-right: 0;
}

.ot1-compare__hl {
    position: absolute;
    top: -10px;
    bottom: -10px;
    right: 0;
    width: 17.5%;
    background: #EEF2FF;
    border: 2px solid #1D70EC;
    border-radius: 16px;
    box-shadow: 0 4px 16px rgba(29, 112, 236, 0.15);
    z-index: -1;
    pointer-events: none;
}

/* ---------- S08 mobile（深蓝双方法卡） ---------- */
.ot1-mobile {
    background: #021A60;
    padding: 120px 40px;
}

.ot1-mobile__inner {
    max-width: 1280px;
    margin: 0 auto;
}

.ot1-mobile__cards {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
}

.ot1-mobile__card {
    background: #FFF;
    border-radius: 16px;
    overflow: hidden;
}

.ot1-mobile__card-head {
    background: #EEF2FF;
    padding: 26px 40px;
    text-align: center;
}

.ot1-mobile__card-head h3 {
    font-size: 24px;
    line-height: 31px;
    font-weight: 700;
    color: #021A60;
}

.ot1-mobile__card-head p {
    margin: 8px 0 0;
    font-size: 14px;
    line-height: 18px;
    color: #000;
}

.ot1-mobile__card-body {
    padding: 40px;
}

.ot1-mobile__chips {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
}

.ot1-mobile__chips li {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 9px 12px;
    border-radius: 6px;
    background: #FEF0F0;
    font-size: 14px;
    line-height: 18px;
    color: #000;
}

.ot1-mobile__chips li::before {
    content: "";
    width: 12px;
    height: 12px;
    background: url("/resource/images/how-to-transfer-files-from-google-drive-to-dropbox-iw/ic-16-x.svg") no-repeat center / contain;
}

.ot1-mobile__steps {
    list-style: none;
    margin: 28px 0 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.ot1-mobile__steps li {
    display: flex;
    align-items: flex-start;
    gap: 22px;
    font-size: 14px;
    line-height: 18px;
    color: #000;
}

.ot1-mobile__steps li i {
    flex: 0 0 24px;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: #0055FF;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-style: normal;
    font-size: 14px;
    font-weight: 700;
    color: #FFF;
}

.ot1-mobile__tip {
    margin: 26px 0 0;
    text-align: center;
    font-size: 14px;
    line-height: 18px;
    color: #FFF;
}

/* ---------- S09 syncpromo（双卡 + 深蓝大卡） ---------- */
.ot1-syncpromo {
    background: #FFF;
    padding: 120px 40px;
}

.ot1-syncpromo__inner {
    max-width: 1280px;
    margin: 0 auto;
}

.ot1-syncpromo__inner>h2 {
    font-size: 36px;
    line-height: 47px;
    font-weight: 700;
    color: #000;
    text-align: center;
}

.ot1-syncpromo__cards {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
    margin-top: 72px;
}

.ot1-syncpromo__card {
    position: relative;
    background: #FFF;
    border: 1px solid #E5E7EB;
    border-radius: 16px;
    padding: 40px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.ot1-syncpromo__card--hl {
    border: 2px solid #0055FF;
    box-shadow: none;
}

.ot1-syncpromo__label {
    margin: 0;
    font-size: 12px;
    line-height: 16px;
    font-weight: 700;
    color: #0055FF;
}

.ot1-syncpromo__label--muted {
    color: #9CA3AF;
}

.ot1-syncpromo__card h3 {
    margin-top: 6px;
    font-size: 24px;
    line-height: 31px;
    font-weight: 700;
    color: #000;
}

.ot1-syncpromo__desc {
    margin: 12px 0 0;
    max-width: 345px;
    font-size: 14px;
    line-height: 18px;
    color: #5D6B82;
}

.ot1-syncpromo__pair {
    position: absolute;
    right: 40px;
    top: 75px;
}

.ot1-syncpromo__dark {
    position: relative;
    overflow: hidden;
    margin-top: 26px;
    border-radius: 32px;
    background: #021A60;
    padding: 60px 65px;
}

.ot1-syncpromo__dark::before {
    content: "";
    position: absolute;
    left: 20px;
    bottom: 20px;
    width: 140px;
    height: 140px;
    background: url("/resource/images/how-to-transfer-files-from-google-drive-to-dropbox-iw/dots-grid.svg") no-repeat center / contain;
}

.ot1-syncpromo__dark h2 {
    font-size: 36px;
    line-height: 43px;
    font-weight: 700;
    color: #FFF;
    text-align: center;
}

.ot1-syncpromo__dark-desc {
    margin: 12px 0 0;
    font-size: 17px;
    line-height: 27px;
    color: #FFF;
    text-align: center;
}

.ot1-syncpromo__dgrid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
    margin-top: 43px;
}

.ot1-syncpromo__dcard {
    background: #FFF;
    border-radius: 16px;
    padding: 24px 27px 28px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.ot1-syncpromo__dic {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: #EEF2FF;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.ot1-syncpromo__dcard h3 {
    margin-top: 20px;
    font-size: 18px;
    line-height: 23px;
    font-weight: 700;
    color: #000;
}

.ot1-syncpromo__dcard p {
    margin: 11px 0 0;
    font-size: 14px;
    line-height: 18px;
    color: #5D5D5D;
}

.ot1-syncpromo__dark-cta {
    margin-top: 39px;
    text-align: center;
}

.ot1-syncpromo__cta-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 46px;
    padding: 0 34px;
    border-radius: 999px;
    background: #0055FF;
    color: #FFF;
    font-size: 18px;
    line-height: 23px;
    font-weight: 700;
    text-decoration: none;
    white-space: nowrap;
    transition: background-color 0.15s ease;
}

@media (hover: hover) {
    .ot1-syncpromo__cta-btn:hover {
        background: #0046CC;
    }
}

/* ---------- S10 fmt（格式转换图 + Pro Tip） ---------- */
.ot1-fmt {
    background: #FFF;
    padding: 120px 40px;
}

.ot1-fmt__inner {
    max-width: 1280px;
    margin: 0 auto;
}

.ot1-fmt__diagram {
    position: relative;
    max-width: 1200px;
    margin: 0 auto;
    height: 420px;
}

.ot1-fmt__badge {
    position: absolute;
    left: 50%;
    top: 0;
    transform: translateX(-50%);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 216px;
    height: 54px;
    border-radius: 27px;
    background: #FFF;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

.ot1-fmt__cloud {
    position: absolute;
    top: 86px;
    width: 200px;
    text-align: center;
}

.ot1-fmt__cloud--src {
    left: 30px;
}

.ot1-fmt__cloud--dst {
    right: 30px;
}

.ot1-fmt__cloud h3 {
    font-size: 18px;
    line-height: 23px;
    font-weight: 700;
    color: #000;
}

.ot1-fmt__tag {
    display: inline-block;
    margin-top: 6px;
    padding: 2px 10px;
    border-radius: 999px;
    background: #EEF2FF;
    font-size: 12px;
    line-height: 16px;
    color: #0055FF;
}

.ot1-fmt__cloud img {
    display: block;
    margin: 14px auto 0;
    width: 200px;
    height: 210px;
}

.ot1-fmt__lines {
    position: absolute;
    top: 114px;
    width: 200px;
    height: 236px;
}

.ot1-fmt__lines--l {
    left: 188px;
}

.ot1-fmt__lines--r {
    right: 188px;
}

.ot1-fmt__col {
    position: absolute;
    top: 104px;
    display: flex;
    flex-direction: column;
    gap: 22px;
}

.ot1-fmt__col--l {
    left: 310px;
}

.ot1-fmt__col--r {
    right: 302px;
}

.ot1-fmt__item {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 268px;
    height: 50px;
    padding: 0 14px;
    background: #FFF;
    border: 1px solid #E5E7EB;
    border-radius: 8px;
    font-size: 14px;
    line-height: 18px;
    font-weight: 700;
    color: #000;
}

.ot1-fmt__col--r .ot1-fmt__item {
    width: 288px;
}

.ot1-fmt__item img {
    flex: 0 0 20px;
}

.ot1-fmt__arrow {
    position: absolute;
    left: 50%;
    top: 207px;
    transform: translate(-50%, 0);
    width: 56px;
    height: 56px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.ot1-fmt__arrow img {
    width: 50px;
    height: 50px;
}

.ot1-fmt__note {
    max-width: 1200px;
    margin: 46px auto 0;
    border-radius: 8px;
    background: #FFF;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.05);
    padding: 17px 24px 24px;
}

.ot1-fmt__note-head {
    margin: 0;
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 16px;
    line-height: 21px;
    color: #000;
}

.ot1-fmt__note-head img {
    flex: 0 0 24px;
    margin-right: 4px;
}

.ot1-fmt__note-lead {
    color: #0055FF;
    font-weight: 700;
}

.ot1-fmt__note-body {
    margin: 10px 0 0;
    font-size: 14px;
    line-height: 20px;
    color: #5D5D5D;
}

/* ---------- S11 explore（深蓝 3x2 工具卡） ---------- */
.ot1-explore {
    background: #021A60;
    padding: 120px 40px;
}

.ot1-explore__inner {
    max-width: 1280px;
    margin: 0 auto;
}

.ot1-explore__grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px 24px;
}

.ot1-explore__card {
    background: #FFF;
    border-radius: 16px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.ot1-explore__head {
    display: block;
    width: 100%;
    height: auto;
    aspect-ratio: 410 / 144;
    object-fit: cover;
}

.ot1-explore__body {
    flex: 1 1 auto;
    display: flex;
    flex-direction: column;
    padding: 24px;
    text-align: center;
}

.ot1-explore__body h3 {
    font-size: 20px;
    line-height: 26px;
    font-weight: 700;
    color: #000;
}

.ot1-explore__body p {
    margin: 16px 0 0;
    font-size: 14px;
    line-height: 20px;
    color: #5D5D5D;
    min-height: 80px;
}

.ot1-explore__btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    align-self: center;
    margin-top: auto;
    min-height: 44px;
    padding: 10px 24px;
    border: 1px solid #1D70EC;
    border-radius: 8px;
    color: #1D70EC;
    font-size: 16px;
    line-height: 21px;
    font-weight: 700;
    text-decoration: none;
    white-space: nowrap;
    transition: background-color 0.15s ease, color 0.15s ease;
    margin-top: 20px;
}

@media (hover: hover) {
    .ot1-explore__btn:hover {
        background: #F4F8FF;
        border-color: #1D70EC;
    }
}

.ot1-explore__btn:active {
    opacity: 0.85;
}

/* ---------- S12 support（24 云盘 tile） ---------- */
.ot1-support {
    background: #F9FAFC;
    padding: 120px 40px;
}

.ot1-support__inner {
    max-width: 1280px;
    margin: 0 auto;
}

.ot1-support__grid {
    display: grid;
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 14px 17px;
}

.ot1-support__item {
    background: #FFF;
    border-radius: 14px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    padding: 25px 12px 20px;
    text-align: center;
    text-decoration: none;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

@media (hover: hover) {
    .ot1-support__item:hover {
        transform: translateY(-4px);
        box-shadow: 0 12px 28px rgba(0, 0, 0, 0.1);
    }
}

.ot1-support__item img {
    width: 60px;
    height: 60px;
}

.ot1-support__item span {
    font-size: 16px;
    line-height: 21px;
    color: #000;
    overflow-wrap: break-word;
}

.ot1-support__more {
    margin-top: 46px;
    text-align: center;
}

.ot1-support__more-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    min-height: 46px;
    padding: 12px 90px;
    background: #FFF;
    border: 1px solid #E5E7EB;
    border-radius: 8px;
    font-family: inherit;
    font-size: 16px;
    line-height: 21px;
    color: #000;
    cursor: pointer;
    transition: box-shadow 0.15s ease;
}

@media (hover: hover) {
    .ot1-support__more-btn:hover {
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
    }
}

.ot1-support__more-btn img {
    width: 20px;
    height: 20px;
}


/* ---------- S14 faqs（族标准手风琴） ---------- */
.ot1-faqs {
    background: #FFF;
    padding: 120px 40px;
}

.ot1-faqs__container {
    max-width: 1280px;
    margin: 0 auto;
}

.ot1-faqs__container h2 {
    font-size: 36px;
    line-height: 47px;
    font-weight: 700;
    color: #000;
    text-align: center;
    margin: 0 0 83px;
}

.ot1-faqs__list {
    max-width: 1200px;
    margin: 0 auto;
}

.ot1-faqs__item {
    border-bottom: 1px solid #E5E7EB;
}

.ot1-faqs__item:first-child {
    border-top: 1px solid #E5E7EB;
}

.ot1-faqs__qrow {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    padding: 40px 0;
}

.ot1-faqs__title {
    margin: 0;
    flex: 1 1 auto;
    min-width: 0;
}

.ot1-faqs__title button {
    display: block;
    width: 100%;
    text-align: left;
    background: none;
    border: 0;
    padding: 0;
    font-family: inherit;
    font-size: 20px;
    line-height: 26px;
    font-weight: 700;
    color: #000;
    cursor: pointer;
    transition: color 0.2s ease;
    overflow-wrap: break-word;
}

.ot1-faqs__item.is-open .ot1-faqs__title button {
    color: #0055FF;
}

.ot1-faqs__icon {
    flex: 0 0 32px;
    width: 32px;
    height: 32px;
    display: inline-flex;
}

.ot1-faqs__icon img {
    width: 32px;
    height: 32px;
    transition: transform 0.25s ease;
    transform: rotate(180deg);
}

.ot1-faqs__item.is-open .ot1-faqs__icon img {
    transform: rotate(0deg);
}

.ot1-faqs__a {
    padding: 0 0 40px;
}

.ot1-faqs__a p {
    margin: 0;
    font-size: 16px;
    line-height: 21px;
    color: #000;
    overflow-wrap: break-word;
}

/* ---------- S15 cta（深蓝大卡） ---------- */
.ot1-cta {
    background: #F9FAFC;
    padding: 0 40px 120px;
}

.ot1-cta__card {
    position: relative;
    max-width: 1280px;
    margin: 0 auto;
    min-height: 500px;
    background: #021A60;
    border-radius: 24px;
    padding: 106px 72px 0 72px;
    overflow: hidden;
}

.ot1-cta__info {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.ot1-cta__logo {
    display: block;
    width: 152px;
    height: 26px;
}

.ot1-cta__info h2 {
    margin-top: 16px;
    max-width: 596px;
    font-size: 36px;
    line-height: 49px;
    font-weight: 700;
    color: #FFF;
    text-align: left;
}

.ot1-cta__info p {
    margin: 14px 0 0;
    max-width: 596px;
    font-size: 18px;
    line-height: 26px;
    color: #FFF;
}

.ot1-cta__btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-top: 16px;
    min-height: 64px;
    padding: 0 59px;
    border-radius: 8px;
    background: #0055FF;
    color: #FFF;
    font-size: 18px;
    line-height: 23px;
    font-weight: 700;
    text-decoration: none;
    white-space: nowrap;
    transition: background-color 0.15s ease, transform 0.15s ease;
}

@media (hover: hover) {
    .ot1-cta__btn:hover {
        background: #0046CC;
    }
}

.ot1-cta__btn:active {
    transform: scale(0.97);
}

.ot1-cta__illust {
    position: absolute;
    right: 72px;
    top: 60px;
    width: 540px;
    height: 380px;
}

/* ---------- 滚动 reveal ---------- */
.ot-ready .reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease-out, transform 0.5s ease-out;
}

.ot-ready .reveal.is-visible {
    opacity: 1;
    transform: none;
}

/* ---------- 响应式 ---------- */
@media (max-width: 1199px) {

    .ot1-advantage__grid,
    .ot1-betterfit__grid,
    .ot1-explore__grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .ot1-support__grid {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }

    .ot1-methods__layout {
        grid-template-columns: 1fr;
        gap: 0;
    }

    .ot1-methods__nav {
        position: static;
    }

    .ot1-methods__nav {
        position: static;
        flex-direction: row;
        flex-wrap: wrap;
        gap: 12px 24px;
        margin-bottom: 40px;
    }

    .ot1-methods__nav a {
        text-align: left;
    }



    .ot1-cta__illust {
        width: 440px;
        height: auto;
    }
}

@media (max-width: 991px) {
    .ot1-ways__card {
        padding: 32px 24px;
    }

    .ot1-ways__quota {
        flex: 0 0 112px;
        min-width: 0;
    }

    .ot1-ways__card-top {
        flex-wrap: wrap;
    }

    .ot1-ways__card-top .ot1-ways__quota {
        margin-top: 12px;
    }

    .ot1-ways__card-top .ot1-ways__quota {
        flex: 0 0 96px;
        min-height: 96px;
        padding: 12px 4px;
    }

    .ot1-ways__quota strong {
        font-size: 28px;
        line-height: 36px;
    }

    .ot1-ways__quota span {
        font-size: 12px;
        line-height: 16px;
    }

    .ot1-compare__table th,
    .ot1-compare__table td {
        padding: 8px 10px;
        font-size: 13px;
        height: 60px;
    }

    .ot1-syncpromo__dgrid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .ot1-methods__nav {
        gap: 8px 16px;
    }
}

@media (max-width: 767px) {

    .ot1-advantage,
    .ot1-ways,
    .ot1-betterfit,
    .ot1-methods,
    .ot1-compare,
    .ot1-mobile,
    .ot1-syncpromo,
    .ot1-fmt,
    .ot1-explore,
    .ot1-support,
    .ot1-faqs {
        padding: 64px 20px;
    }

    .ot1-cta {
        padding: 0 20px 64px;
    }

    .ot1-hero {
        padding: 104px 20px 56px;
    }

    .ot1-hero__inner h1 {
        font-size: 30px;
        line-height: 40px;
    }

    .ot1-hero__desc {
        font-size: 16px;
        line-height: 24px;
    }

    .ot1-hero__btn {
        min-width: 0;
        width: 100%;
        white-space: normal;
        text-align: center;
    }

    .ot1-sec-head {
        margin-bottom: 48px;
    }

    .ot1-sec-head h2 {
        font-size: 28px;
        line-height: 37px;
    }

    .ot1-sec-head p {
        font-size: 16px;
    }

    .ot1-advantage__stats {
        padding: 24px 20px;
    }

    .ot1-advantage__stats-row {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .ot1-advantage__grid,
    .ot1-betterfit__grid,
    .ot1-explore__grid {
        grid-template-columns: 1fr;
    }

    .ot1-ways__cards,
    .ot1-mobile__cards,
    .ot1-syncpromo__cards {
        grid-template-columns: 1fr;
    }

    .ot1-ways__card {
        padding: 28px 24px;
    }

    .ot1-ways__card-top {
        flex-direction: column;
    }

    .ot1-support__grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 10px;
    }

    .ot1-support__more-btn {
        padding: 12px 40px;
    }

    .ot1-mobile__card-body {
        padding: 24px 20px;
    }

    .ot1-syncpromo__dark {
        padding: 40px 20px;
    }

    .ot1-syncpromo__dgrid {
        grid-template-columns: 1fr;
    }

    .ot1-fmt__diagram {
        height: auto;
        position: static;
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 20px;
    }

    .ot1-fmt__badge,
    .ot1-fmt__cloud,
    .ot1-fmt__col,
    .ot1-fmt__arrow,
    .ot1-fmt__lines {
        position: static;
        transform: none;
    }

    .ot1-fmt__lines {
        display: none;
    }

    .ot1-fmt__item,
    .ot1-fmt__col--r .ot1-fmt__item {
        width: 100%;
        max-width: 320px;
    }

    .ot1-methods__nav {
        flex-direction: column;
        gap: 12px;
    }

    .ot1-methods__layout {
        display: block;
    }

    /* 高亮列上下凸出 10px，移动端需 overflow:visible 才不被裁切（表格 100% 自适应，无横向滚动需求） */
    .ot1-compare__wrap {
        overflow: visible;
    }


    .ot1-faqs__qrow {
        padding: 28px 0;
        gap: 12px;
    }

    .ot1-faqs__title button {
        font-size: 17px;
        min-height: 44px;
    }

    .ot1-cta__card {
        padding: 48px 24px;
        min-height: 0;
    }

    .ot1-cta__illust {
        position: static;
        width: 100%;
        max-width: 440px;
        height: auto;
        margin-top: 24px;
    }

    .ot1-cta__info h2 {
        font-size: 26px;
        line-height: 36px;
    }

    .ot1-cta__btn {
        width: 100%;
        white-space: normal;
        text-align: center;
    }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
    .ot-ready .reveal {
        opacity: 1;
        transform: none;
        transition: none;
    }

    .ot1-hero__btn,
    .ot1-ways__btn,
    .ot1-methods__reco-btn,
    .ot1-explore__btn,
    .ot1-support__item,
    .ot1-support__more-btn,
    .ot1-syncpromo__cta-btn,
    .ot1-cta__btn,
    .ot1-faqs__icon img,
    .ot1-faqs__title button {
        transition: none !important;
    }
}

/* ---------- focus-visible ---------- */
main .ot1-hero a:focus-visible,
main .ot1-advantage a:focus-visible,
main .ot1-ways a:focus-visible,
main .ot1-methods a:focus-visible,
main .ot1-methods button:focus-visible,
main .ot1-explore a:focus-visible,
main .ot1-support a:focus-visible,
main .ot1-faqs button:focus-visible,
main .ot1-cta a:focus-visible {
    outline: 2px solid #0055FF;
    outline-offset: 2px;
}

/* ---------- 模板协同 ---------- */
/* 模板 table 默认样式复位（对比表用 border-collapse:separate 保圆角） */
.ot1-compare__table th,
.ot1-compare__table td {
    border-collapse: separate;
}

.ot1-explore__card,
.ot1-advantage__card,
.ot1-betterfit__card {
    transition: all 0.3s ease-in-out;
}

.ot1-explore__card:hover,
.ot1-advantage__card:hover,
.ot1-betterfit__card:hover {
    transform: translateY(-10px);
}