.vf-section{--vf-section-bg:#f6f8f6;--vf-section-card:#fff;--vf-section-text:#172b22;--vf-section-muted:#68786e;--vf-section-green:#16a34a;--vf-section-blue:#3789dc;--vf-section-tint:#eaf6ee;position:relative;padding:68px 0;color:var(--vf-section-text);background:var(--vf-section-bg);font-family:Inter,"PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.6}
.vf-section,.vf-section *{box-sizing:border-box}
.vf-section__container{position:relative;z-index:1;width:var(--vf-content-width,60%);margin-inline:auto}
.vf-section__heading{text-align:center;margin-bottom:36px}
.vf-section__heading h2{margin:0 0 12px;color:var(--vf-section-text);font-size:clamp(26px,2.2vw,36px);line-height:1.25;font-weight:800;letter-spacing:-.7px}
.vf-section__heading p{margin:0;color:var(--vf-section-muted);font-size:15px}
.vf-section h3{margin:0 0 10px;color:var(--vf-section-text);font-size:18px;line-height:1.4;font-weight:700}
.vf-section__step p{margin:0;color:var(--vf-section-muted);font-size:14px;line-height:1.75;overflow-wrap:break-word}
.vf-section--steps{background:transparent;padding-top:44px;scroll-margin-top:24px}
@media(max-width:767px){
    .vf-section--steps{overflow:hidden}
    .vf-section--steps::before{content:"";position:absolute;top:0;left:-34px;width:489px;height:148.9921875px;background:url("/assets/img/download-1.png") center / 100% 100% no-repeat;opacity:1;pointer-events:none}
    html[data-vf-theme="dark"] .vf-section--steps::before{background-image:url("/assets/img/download-2.png")}
}
.vf-section__steps-grid{display:grid;grid-template-columns:repeat(3,minmax(0,350px));justify-content:center;gap:28px}
.vf-section__step{position:relative;min-width:0;width:100%;min-height:451px;padding:28px;border:1px solid rgba(22,163,74,.1);border-radius:20px;background:transparent;box-shadow:0 6px 22px rgba(24,65,40,.04)}
.vf-section__number{display:block;color:var(--vf-section-green);font-size:17px;font-weight:700;direction:ltr;text-align:start}
.vf-section__number strong{font-size:28px;font-weight:800;letter-spacing:-1px}
.vf-section__step-icon{display:block;width:200px;height:200px;max-width:100%;object-fit:contain;margin:34px auto 26px}
.vf-section__step:not(:last-child)::after{content:"\2192";position:absolute;inset-inline-end:-24px;top:50%;z-index:2;color:var(--vf-section-green);font-size:24px;line-height:1}
html[dir="rtl"] .vf-section__step:not(:last-child)::after{content:"\2190"}
html[data-vf-theme="dark"] .vf-section{--vf-section-bg:#101713;--vf-section-card:#18241d;--vf-section-text:#edf6ef;--vf-section-muted:#b1c4b8;--vf-section-green:#59dc90;--vf-section-blue:#78b9f3;--vf-section-tint:#13271b}
.vf-faq{scroll-margin-top:24px;font-family:"SF Pro","SF Pro Display",-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;font-style:normal;letter-spacing:0}
/* 1920px视口、1152px容器下，右列距左列起点483px；不固定整页坐标。 */
.vf-faq__layout{display:grid;grid-template-columns:minmax(0,calc(41.927083% - 48px)) minmax(0,1fr);gap:48px;align-items:start;text-align:left}
.vf-faq__eyebrow{display:flex;align-items:center;justify-content:center;width:153px;max-width:100%;height:42px;margin:0 0 14px;border-radius:5px;background:#DFF3DF;opacity:1;color:var(--vf-section-green);font-size:24px;font-weight:700;line-height:1;letter-spacing:0;text-align:center}
.vf-faq__heading h1,.vf-faq__heading h2{margin:0;color:var(--vf-section-text);font-size:34px;font-weight:700;line-height:1;letter-spacing:0;overflow-wrap:break-word}
.vf-faq__items{min-width:0}
.vf-faq__item{border-bottom:1px solid var(--vf-border,#dfe5e1)}
.vf-faq__question{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:22px 0;list-style:none;cursor:pointer;color:var(--vf-section-text);font-size:15px;font-weight:700;line-height:24px;letter-spacing:0;text-align:left;overflow-wrap:break-word}
.vf-faq__question>span:first-child{flex:1;min-width:0;min-height:24px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.vf-faq__item:first-child .vf-faq__question{padding-top:0}
.vf-faq__item[open] .vf-faq__question{padding-bottom:20px}
.vf-faq__question::-webkit-details-marker{display:none}
.vf-faq__question:focus-visible{outline:2px solid var(--vf-section-green);outline-offset:4px;border-radius:4px}
.vf-faq__question:hover{color:var(--vf-section-green)}
.vf-faq__toggle{position:relative;flex:0 0 20px;width:20px;height:20px;color:var(--vf-section-green)}
.vf-faq__toggle::before{content:"";position:absolute;top:4px;left:5px;width:10px;height:10px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:rotate(45deg)}
.vf-faq__item[open] .vf-faq__toggle::before{top:8px;transform:rotate(225deg)}
/* 动态答案可增高，46px仅作为两行文案的最小高度，避免裁切。 */
.vf-faq__answer{width:614px;max-width:100%;padding:0 0 22px;color:var(--vf-section-muted);font-size:14.3px;font-weight:400;line-height:22.88px;letter-spacing:0;overflow-wrap:break-word}
.vf-faq__answer p{min-height:46px;margin:0}
@media(max-width:767px){.vf-faq__layout{grid-template-columns:1fr;gap:28px}.vf-faq__heading{text-align:center}.vf-faq__eyebrow{margin-inline:auto}.vf-faq__heading br{display:none}.vf-faq__heading h1,.vf-faq__heading h2{font-size:24px;font-weight:700;line-height:1;letter-spacing:0;white-space:nowrap;text-align:center}.vf-faq__question{padding-block:18px;font-size:14px;font-weight:700;line-height:1;letter-spacing:-.5px}.vf-faq__question>span:first-child{min-height:14px}.vf-faq__answer{padding-bottom:18px;font-size:13px;font-weight:400;line-height:20px;letter-spacing:0}}
@media(max-width:1199px){.vf-section__steps-grid{gap:22px}.vf-section__step{padding:22px 18px}.vf-section__step:not(:last-child)::after{inset-inline-end:-21px}}
@media(max-width:991px){.vf-section__container{width:var(--vf-content-width,calc(100% - 32px))}.vf-section{padding-block:48px}}
@media(max-width:767px){.vf-section__steps-grid{grid-template-columns:minmax(0,294px);gap:28px}.vf-section__step{text-align:center;min-height:353.44px;height:auto;background:linear-gradient(169.98deg,#DFF3DF 33.25%,#FFFFFF 86.37%);padding:9px 8.5px 24px;font-family:"SF Pro","SF Pro Display",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-style:normal;letter-spacing:0}.vf-section__step:nth-child(2){background:linear-gradient(349.98deg,#DFF3DF 33.25%,#FFFFFF 86.37%)}.vf-section__step-icon{width:160px;height:160px;margin:5px auto 26px}.vf-section__step h3{width:275px;max-width:100%;height:auto;margin:0 auto 10px;font-size:16px;font-weight:700;line-height:22.2px;letter-spacing:0;overflow-wrap:break-word;text-align:left}.vf-section__step p{width:275px;max-width:100%;height:auto;margin:0 auto;font-size:14px;font-weight:400;line-height:18.57px;letter-spacing:0;text-align:left}.vf-section__number{display:flex;align-items:center;justify-content:center;gap:2px;width:66px;height:21px;margin:10px 0 28px 5.5px;font-size:18px;font-weight:700;font-style:normal;text-align:center;line-height:18px;letter-spacing:0}.vf-section__number strong{font-size:18px;font-weight:700;line-height:18px;letter-spacing:0}.vf-section__step:not(:last-child)::after,html[dir="rtl"] .vf-section__step:not(:last-child)::after{content:none}.vf-section__heading{margin-bottom:28px}}
@media(max-width:767px){
    html[data-vf-theme="dark"] .vf-section__step{background:linear-gradient(175.19deg,#1C3124 52.01%,#111B15 112.82%);color:#FFFFFF}
    html[data-vf-theme="dark"] .vf-section__step:nth-child(2){background:linear-gradient(355.19deg,#1C3124 52.01%,#111B15 112.82%)}
    html[data-vf-theme="dark"] .vf-section__step h3,html[data-vf-theme="dark"] .vf-section__step p,html[data-vf-theme="dark"] .vf-section__number{color:#FFFFFF}
    html[data-vf-theme="dark"] .vf-section__number strong{color:#16A34A}
}
.vf-app-download{background:#E9F1EB;font-family:"SF Pro","SF Pro Display",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;letter-spacing:0}
.vf-app-download__layout{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.vf-app-download__copy h2{margin:0 0 12px;color:var(--vf-section-text);font-size:34px;font-weight:700;line-height:1.2;letter-spacing:0}
.vf-app-download__copy p{margin:0;color:var(--vf-section-muted);font-size:15px;line-height:24px}
.vf-app-download__stores{display:flex;gap:16px;flex-wrap:wrap}
.vf-app-download__button{display:inline-flex;align-items:center;justify-content:center;gap:12px;flex:0 0 173px;width:173px;height:52px;padding:0 16px;border:0;border-radius:13px;background:#111A15;color:#E9F1EB;font-family:"SF Pro","SF Pro Display",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-size:15px;font-weight:700;line-height:24px;letter-spacing:0;white-space:nowrap}
.vf-app-download__button:disabled{background:#fbfcfb;color:#0D1B12;opacity:1;cursor:not-allowed}
html[data-vf-theme="dark"] .vf-app-download__button:disabled{background:#111A15;color:#E9F1EB;}
.vf-app-download__button .fa{font-size:22px}
.vf-app-download__icon--dark{display:none}
html[data-vf-theme="dark"] .vf-app-download__icon--light{display:none}
html[data-vf-theme="dark"] .vf-app-download__icon--dark{display:block}
html[data-vf-theme="dark"] .vf-app-download{background:#18241D}
@media(max-width:767px){.vf-app-download__layout{flex-direction:column;align-items:center;gap:24px;text-align:center}.vf-app-download__stores{flex-direction:column;align-items:center}.vf-app-download__button{flex-basis:auto}}
.vf-main-features{--vf-section-bg:#F9FBF8;--vf-section-text:#111827;--vf-section-muted:#6B7280;--vf-feature-border:#e5e7eb;--vf-feature-green:#22C55E}
.vf-main-features__grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.vf-main-features__card{min-width:0;padding:28px;border:1px solid var(--vf-feature-border);border-radius:16px;background:var(--vf-section-card);box-shadow:0 3px 12px rgba(17,24,39,.04);transition:transform .2s,box-shadow .2s}
.vf-main-features__card:hover{transform:translateY(-4px);box-shadow:0 8px 20px rgba(17,24,39,.08)}
.vf-main-features__icon{display:flex;align-items:center;justify-content:center;width:48px;height:48px;margin-bottom:20px;border-radius:12px;background:transparent;color:#fff;font-size:22px}
.vf-main-features__card p{height:132px;overflow-y:auto;margin:0;color:var(--vf-section-muted);font-size:14px;line-height:22px;text-align:center;overflow-wrap:break-word}
.vf-main-features__card h3{display:flex;align-items:center;justify-content:center;height:56px;margin:0 0 10px;line-height:28px;text-align:center}
html[data-vf-theme="dark"] .vf-main-features{--vf-section-bg:#101713;--vf-section-card:#18241d;--vf-section-text:#edf6ef;--vf-section-muted:#b1c4b8;--vf-feature-border:#2a3a30}
@media(max-width:991px){.vf-main-features__grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:767px){
    .vf-main-features{overflow:hidden}
    .vf-main-features::before{content:"";position:absolute;top:0;left:-34px;width:489px;height:148.9921875px;background:url("/assets/img/MainFeatures-1.png") center / contain no-repeat;opacity:1;pointer-events:none}
    html[data-vf-theme="dark"] .vf-main-features::before{background-image:url("/assets/img/MainFeatures-2.png")}
    .vf-main-features__grid{grid-template-columns:minmax(0,350px);justify-content:center}
    .vf-main-features__card{display:grid;grid-template-columns:32px minmax(0,1fr);grid-template-rows:auto auto;column-gap:21px;row-gap:4px;width:100%;min-height:120px;height:auto;padding:21px 12px 21px 23px;border-radius:18px;opacity:1;font-family:"SF Pro","SF Pro Display",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-style:normal;letter-spacing:0}
    .vf-main-features__icon{grid-column:1;grid-row:1 / 3;align-self:center;width:32px;height:32px;margin:0}
    .vf-main-features__icon img{width:32px!important;height:32px!important}
    .vf-main-features__card h3{grid-column:2;grid-row:1;min-width:0;height:auto;margin:0;font-size:16px;font-weight:700;line-height:26.4px;letter-spacing:0;text-align:left;display:block;white-space:normal;overflow:visible;overflow-wrap:anywhere}
    .vf-main-features__card p{grid-column:2;grid-row:2;min-width:0;height:auto;overflow:visible;overflow-wrap:anywhere;font-size:14px;font-weight:400;line-height:22.4px;letter-spacing:0;text-align:left}
}
@media(prefers-reduced-motion:reduce){.vf-main-features__card{transition:none}.vf-main-features__card:hover{transform:none}}
.vf-format-support{--vf-section-bg:#fff;--vf-format-border:#e5e7eb;--vf-format-note:#9ca3af;border-top:1px solid var(--vf-format-border)}
.vf-format-support[hidden]{display:none}
.vf-format-support__grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr))}
.vf-format-support__item{min-width:0;padding:12px 28px;text-align:center;overflow-wrap:break-word}
.vf-format-support__item+.vf-format-support__item{border-inline-start:1px solid var(--vf-format-border)}
.vf-format-support__item p{margin:0;color:var(--vf-section-muted);font-size:16px}
.vf-format-support__item .vf-format-support__note{margin-top:8px;color:var(--vf-format-note);font-size:13px}
html[data-vf-theme="dark"] .vf-format-support{--vf-section-bg:#18241d;--vf-format-border:#2a3a30;--vf-format-note:#92a69a}
@media(max-width:767px){.vf-format-support{padding-top:56px}.vf-format-support .vf-section__heading h2{display:flex;align-items:center;justify-content:center;width:291px;max-width:100%;min-height:58px;margin:0 auto;font-family:"SF Pro","SF Pro Display",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-weight:700;font-style:normal;font-size:24px;line-height:1;letter-spacing:0;text-align:center;opacity:1}.vf-format-support__grid{grid-template-columns:1fr}.vf-format-support__item{padding:24px 12px}.vf-format-support__item+.vf-format-support__item{border-inline-start:0;border-top:1px solid var(--vf-format-border)}}
/* ===== Help & FAQ 独立页面 ===== */
.vf-help{--vf-help-bg:#f7f9f6;--vf-help-card:#fff;--vf-help-text:#2d2d2d;--vf-help-muted:#6b7280;--vf-help-border:#e5e7eb;--vf-help-green:#16A34A;--vf-help-blue:#0055ff;background:var(--vf-help-bg);padding:48px 0 64px;font-family:"SF Pro","SF Pro Display",-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;letter-spacing:0}
html[data-vf-theme="dark"] .vf-help{--vf-help-bg:#101713;--vf-help-card:#18241d;--vf-help-text:#edf6ef;--vf-help-muted:#b1c4b8;--vf-help-border:#2a3a30}
.vf-help__container{width:var(--vf-content-width,60%);margin-inline:auto;padding-inline:0}
.vf-help__title{margin:0 0 36px;color:var(--vf-help-text);font-size:32px;font-weight:800;line-height:1.2;text-align:center}
.vf-help__layout{display:grid;grid-template-columns:220px 1fr;gap:48px;align-items:start}
/* 左侧目录 */
.vf-help__sidebar{position:sticky;top:80px}
.vf-help__toc{display:flex;flex-direction:column;gap:6px}
.vf-help__toc-label{margin:0 0 14px;color:var(--vf-help-muted);font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.5px}
.vf-help__toc-link{display:block;padding:10px 14px;border-radius:10px;color:var(--vf-help-muted);font-size:14px;font-weight:600;line-height:20px;text-decoration:none;transition:background .2s,color .2s}
.vf-help__toc-link:hover{background:rgba(22,163,74,.06);color:var(--vf-help-green)}
.vf-help__toc-link--active{background:rgba(22,163,74,.1);color:var(--vf-help-green);font-weight:700}
/* 右侧卡片区域 */
.vf-help__content{min-width:0;display:flex;flex-direction:column;gap:40px}
.vf-help__section{scroll-margin-top:80px}
.vf-help__cards{display:grid;grid-template-columns:1fr;gap:20px}
/* 单个卡片 */
.vf-help__card{padding:24px;border:1px solid var(--vf-help-border);border-radius:16px;background:var(--vf-help-card);box-shadow:0 1px 3px rgba(0,0,0,.04);transition:box-shadow .2s,transform .2s}
.vf-help__card:hover{box-shadow:0 4px 12px rgba(0,0,0,.06)}
.vf-help__card-tag{display:inline-block;margin:0 0 10px;padding:2px 10px;border-radius:6px;background:rgba(22,163,74,.08);color:var(--vf-help-green);font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.3px}
.vf-help__card-title{margin:0 0 8px;color:var(--vf-help-text);font-size:15px;font-weight:700;line-height:22px}
.vf-help__card-text{margin:0;color:var(--vf-help-muted);font-size:14px;font-weight:400;line-height:22px;overflow-wrap:break-word}
/* 响应式 */
@media(max-width:991px){.vf-help__layout{grid-template-columns:1fr;gap:32px}.vf-help__sidebar{position:static}}
@media(max-width:767px){.vf-help{padding:32px 0 48px}.vf-help__title{font-size:26px;margin-bottom:24px}.vf-help__card{padding:20px}}