/* ============ 首页 · 场景入口（简约大气：纯文字 + 大数字 + 色块） ============ */
.scenario-strip{
    padding: 36px 0 28px;
    background: #F7F9FC;
}
.scenario-strip .container{
    width: min(100% - 32px, var(--container));
}
.sc-grid{
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 28px;
}
.sc-card{
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 16px;
    padding: 40px 36px 36px;
    background: #fff;
    border-radius: 16px;
    border: 1px solid var(--color-border);
    color: var(--color-text);
    transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease);
    overflow: hidden;
}
.sc-card::before{
    content: "";
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: var(--sc-color);
    transform: scaleX(0);
    transform-origin: left center;
    transition: transform .4s var(--ease);
}
.sc-card:hover{
    transform: translateY(-6px);
    border-color: var(--sc-color);
    box-shadow: 0 24px 48px -24px color-mix(in srgb, var(--sc-color) 50%, transparent);
}
.sc-card:hover::before{ transform: scaleX(1); }
.sc-card:hover .sc-arrow{
    color: var(--sc-color);
    transform: translateX(4px);
}

.sc-cover{
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    margin: -40px -36px 0;
    height: 220px;
}
.sc-cover img{
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.sc-cover .sc-stage{
    position: absolute;
    bottom: 10px;
    left: 10px;
    background: rgba(0,0,0,.55);
    color: #fff;
    font-size: 12px;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 6px;
}

.sc-top{
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.sc-stage{
    display: inline-block;
    padding: 4px 10px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: .5px;
    color: var(--sc-color);
    background: color-mix(in srgb, var(--sc-color) 10%, #fff);
    border-radius: 999px;
}
.sc-arrow{
    width: 20px; height: 20px;
    color: #CBD5E1;
    transition: color .2s var(--ease), transform .2s var(--ease);
}

.sc-title{
    font-size: 22px;
    font-weight: 800;
    color: var(--color-text);
    margin: 0;
    letter-spacing: -.5px;
}
.sc-desc{
    font-size: 13px;
    color: var(--color-text-light);
    line-height: 1.7;
    margin: 0;
    flex: 1;
}
.sc-stat{
    margin-top: 16px;
    padding-top: 20px;
    border-top: 1px dashed var(--color-border);
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 8px;
}
.sc-num{
    font-size: 28px;
    font-weight: 900;
    color: var(--sc-color);
    line-height: 1;
    letter-spacing: -1px;
}
.sc-num small{
    font-size: .55em;
    font-weight: 700;
    margin-left: 2px;
}
.sc-stat-desc{
    font-size: 12px;
    color: var(--color-text-light);
    text-align: right;
}

@media (max-width: 960px){
    .sc-grid{ grid-template-columns: repeat(2, 1fr); gap: 16px; }
    .scenario-strip{ padding: 56px 0 48px; }
    .sc-title{ font-size: 19px; }
    .sc-num{ font-size: 24px; }
}
@media (max-width: 480px){
    .sc-grid{ grid-template-columns: 1fr; }
    .scenario-strip{ padding: 40px 0 40px; }
}

/* ============ 首页 · 四步闭环大图分层布局 ============ */
.showcase-steps{
    padding: 40px 0 32px;
    background: linear-gradient(180deg, #fff 0%, #F8FBFF 60%, #fff 100%);
}
.showcase-steps .section-head{ margin-bottom: 24px; }
.ss-row{
    display: grid;
    grid-template-columns: 1.05fr .95fr;
    gap: 56px;
    align-items: center;
    padding: 22px 0;
    position: relative;
}
.ss-row + .ss-row{
    border-top: 1px dashed var(--color-border);
}
.ss-row--rev{
    grid-template-columns: .95fr 1.05fr;
}
.ss-row--rev .ss-visual{ order: 2; }
.ss-row--rev .ss-copy{ order: 1; }

.ss-visual{
    position: relative;
    border-radius: 24px;
    padding: 32px 28px;
    background: var(--ss-bg);
    box-shadow: 0 30px 60px -28px color-mix(in srgb, var(--ss-color) 40%, transparent);
    overflow: hidden;
}
.ss-visual::before{
    content: "";
    position: absolute;
    top: -60px; right: -60px;
    width: 200px; height: 200px;
    border-radius: 50%;
    background: color-mix(in srgb, var(--ss-color) 18%, transparent);
}
.ss-visual::after{
    content: "";
    position: absolute;
    bottom: -80px; left: -60px;
    width: 220px; height: 220px;
    border-radius: 50%;
    background: color-mix(in srgb, var(--ss-color) 10%, transparent);
}
.ss-stage{
    position: relative;
    z-index: 1;
}
.ss-svg{
    width: 100%;
    height: auto;
    max-width: 560px;
    display: block;
    margin: 0 auto;
    filter: drop-shadow(0 12px 24px rgba(15,23,42,.08));
}
.ss-num{
    position: absolute;
    top: 24px; left: 24px;
    z-index: 2;
    font-size: 64px;
    font-weight: 900;
    line-height: 1;
    color: #fff;
    -webkit-text-stroke: 2px var(--ss-color);
    text-shadow: 0 6px 20px color-mix(in srgb, var(--ss-color) 40%, transparent);
    letter-spacing: -2px;
    opacity: .9;
}

.ss-copy{ padding: 8px 0; }
.ss-tag{
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    border-radius: 999px;
    background: color-mix(in srgb, var(--ss-color) 12%, #fff);
    color: var(--ss-color);
    font-size: 13px;
    font-weight: 700;
    margin-bottom: 16px;
}
.ss-tag::before{
    content: "";
    width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--ss-color);
}
.ss-copy h3{
    font-size: 32px;
    line-height: 1.3;
    color: var(--color-text);
    font-weight: 800;
    margin-bottom: 16px;
    letter-spacing: -.5px;
}
.ss-copy h3 .accent{ color: var(--ss-color); }
.ss-desc{
    font-size: 15.5px;
    line-height: 1.85;
    color: var(--color-text-light);
    margin-bottom: 22px;
}
.ss-bullets{
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    gap: 10px;
}
.ss-bullets li{
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: 12px;
    font-size: 14px;
    color: var(--color-text);
    font-weight: 500;
}
.ss-bullets li svg{
    width: 16px; height: 16px;
    flex-shrink: 0;
    color: var(--ss-color);
    padding: 3px;
    background: color-mix(in srgb, var(--ss-color) 14%, #fff);
    border-radius: 50%;
    box-sizing: content-box;
}

.ss-foot{
    display: flex;
    gap: 14px;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 56px;
    padding-top: 40px;
    border-top: 1px dashed var(--color-border);
}
@media (max-width: 960px){
    .ss-row, .ss-row--rev{
        grid-template-columns: 1fr;
        gap: 32px;
        padding: 40px 0;
    }
    .ss-row--rev .ss-visual,
    .ss-row--rev .ss-copy{ order: unset; }
    .ss-copy h3{ font-size: 26px; }
    .ss-num{ font-size: 48px; }
    .showcase-steps{ padding: 64px 0 48px; }
}

/* ============ 首页 · 课程体系 teaser（大图卡片） ============ */
.courses-teaser{ padding: 40px 0; background: #F7F9FC; }
.ct-grid{
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-top: 40px;
}
.ct-grid article{
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: 20px;
    overflow: hidden;
    transition: transform .25s var(--ease), box-shadow .25s var(--ease);
    display: flex;
    flex-direction: column;
}
.ct-grid article:hover{
    transform: translateY(-6px);
    box-shadow: 0 24px 48px -24px color-mix(in srgb, var(--ct-color) 55%, transparent);
}
.ct-visual{
    aspect-ratio: 16 / 10;
    background: #F3F4F6;
    overflow: hidden;
    position: relative;
    border-bottom: 3px solid var(--ct-color);
}
.ct-visual .ct-svg{
    width: 100%; height: 100%;
    display: block;
}
.ct-body{
    padding: 22px 22px 24px;
    display: flex;
    flex-direction: column;
    flex: 1;
}
.ct-title{
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 8px;
    margin-bottom: 6px;
}
.ct-grid h3{
    font-size: 20px;
    color: var(--ct-color);
    margin-bottom: 0;
    font-weight: 800;
}
.ct-chip{
    font-size: 11px;
    padding: 3px 8px;
    border-radius: 999px;
    background: color-mix(in srgb, var(--ct-color) 12%, #fff);
    color: var(--ct-color);
    font-weight: 600;
}
.ct-sub{
    font-size: 13px;
    color: var(--color-text-light);
    margin-bottom: 14px;
}
.ct-grid ul{
    margin-bottom: 14px;
    padding-bottom: 14px;
    border-bottom: 1px dashed var(--color-border);
    flex: 1;
}
.ct-grid ul li{
    padding: 5px 0 5px 14px;
    font-size: 13.5px;
    color: var(--color-text);
    position: relative;
}
.ct-grid ul li::before{
    content: "";
    position: absolute;
    left: 0; top: 14px;
    width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--ct-color);
}
.ct-link{
    font-size: 13px;
    font-weight: 700;
    color: var(--ct-color);
    align-self: flex-start;
}
@media (max-width: 960px){
    .ct-grid{ grid-template-columns: repeat(2, 1fr); }
}

/* ============ 首页 · 备考资讯（新航道 box5 风格：Tab + 纯列表） ============ */
.news-mega{ padding: 40px 0 32px; background: #fff; }

.bk-title{
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 28px;
}
.bk-title-left{
    display: flex;
    align-items: center;
    gap: 14px;
}
.bk-icon{ width: 40px; height: 40px; flex-shrink: 0; }
.bk-title h2{
    font-size: clamp(28px, 3.5vw, 40px);
    font-weight: 800;
    letter-spacing: -.3px;
    margin: 0;
    line-height: 1.2;
}
.bk-title-en{
    font-size: 12px;
    color: var(--color-text-light);
    letter-spacing: 1.5px;
    text-transform: uppercase;
}

.bk-bar{
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 2px solid #E5E7EB;
    margin-bottom: 0;
}
.bk-tabs{
    display: flex;
    gap: 0;
}
.bk-tab{
    padding: 14px 32px;
    font-size: 16px;
    font-weight: 600;
    color: var(--color-text-light);
    background: none;
    border: none;
    border-bottom: 3px solid transparent;
    margin-bottom: -2px;
    cursor: pointer;
    transition: all .2s var(--ease);
}
.bk-tab:hover{ color: var(--color-text); }
.bk-tab.active{
    color: #DC2626;
    border-bottom-color: #DC2626;
}
.bk-mores{ position: relative; }
.bk-more{
    display: none;
    font-size: 14px;
    color: #DC2626;
    font-weight: 600;
}
.bk-more:hover{ text-decoration: underline; }
.bk-more.show{ display: inline; }

.bk-panels{}
.bk-panel{ display: none; }
.bk-panel.active{ display: block; }

.bk-news-list{
    border: 1px solid var(--color-border);
    border-top: none;
    border-radius: 0 0 12px 12px;
    overflow: hidden;
    background: #fff;
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: repeat(10, auto);
    grid-auto-flow: column;
}
.bk-news-list .bk-news-item:nth-child(-n+10){
    border-right: 1px solid #F3F4F6;
}
.bk-news-item{
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 15px 28px;
    border-bottom: 1px solid #F3F4F6;
    color: inherit;
    transition: background .15s;
}
.bk-news-item:last-child{ border-bottom: 0; }
.bk-news-item:hover{ background: #FEF2F2; }
.bk-news-item:hover .bk-news-link{ color: #DC2626; }
.bk-news-link{
    flex: 1;
    min-width: 0;
    font-size: 15px;
    line-height: 1.5;
    color: var(--color-text);
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: color .2s;
}
.bk-flag{
    display: inline-block;
    margin-right: 8px;
    padding: 2px 7px;
    font-size: 10px;
    font-weight: 800;
    font-style: normal;
    letter-spacing: .3px;
    color: #fff;
    border-radius: 3px;
    vertical-align: 1px;
}
.bk-flag-hot{ background: #F5222D; }
.bk-flag-new{ background: #16A34A; }
.bk-news-date{
    flex-shrink: 0;
    font-size: 13px;
    color: var(--color-text-light);
    font-family: "SF Mono", Menlo, monospace;
}

@media (max-width: 860px){
    .bk-tab{ padding: 12px 20px; font-size: 15px; }
    .bk-title h2{ font-size: 24px; }
    .bk-news-item{ padding: 13px 20px; }
    .bk-news-list{ grid-template-columns: 1fr; grid-template-rows: none; grid-auto-flow: row; }
    .bk-news-list .bk-news-item:nth-child(-n+10){ border-right: none; }
}
@media (max-width: 560px){
    .bk-tabs{ flex-wrap: wrap; }
    .bk-tab{ padding: 10px 16px; font-size: 14px; }
    .bk-news-item{ padding: 12px 16px; }
    .bk-news-link{ font-size: 13.5px; }
}

/* ============ 师资页底部 双按钮 ============ */
.teachers-foot-cta{
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}