/* ============================================================
   研发实力页 yfsl.html
   与首页 / about / jspt / jszc 内页保持统一：
   品牌红 #E73216 + 品牌橙 #EA5B16、思源黑体、rem 字号节奏、
   WOW fadeInUp 进场动效、991 / 767 / 380 响应式断点
   ============================================================ */
.yfsl-page {
    background: #f6f8f8;
    color: #625F5D;
}

/* ---------- Hero（与 jspt / jszc 同构） ---------- */
.yfsl-page .yfsl-hero {
    background: #101d22;
    color: #fff;
    min-height: 6.6rem;
    overflow: hidden;
    position: relative;
}

/* ---------- Banner 背景图 ----------
   图片由页面 HTML 提供（<div class="yfsl-hero-bg"><img src="..."></div>），
   这样每页可单独替换，不再依赖本文件里的统一图片。 */
.yfsl-page .yfsl-hero-bg {
    inset: 0;
    overflow: hidden;
    position: absolute;
}
.yfsl-page .yfsl-hero-bg::after {
    background: rgba(16,29,34,.42);
    content: "";
    inset: 0;
    position: absolute;
}
.yfsl-page .yfsl-hero-bg img {
    display: block;
    height: 100%;
    object-fit: cover;
    object-position: center;
    width: 100%;
}
.yfsl-hero-grid {
    background-image:
        linear-gradient(rgba(255, 255, 255, .05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, .05) 1px, transparent 1px);
    background-size: 42px 42px;
    inset: 0;
    position: absolute;
    -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, #000 20%, transparent 72%);
    mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, #000 20%, transparent 72%);
}
.yfsl-hero-glow {
    background: radial-gradient(circle, rgba(244, 123, 104, .34) 0%, transparent 62%);
    height: 4.6rem;
    position: absolute;
    right: -.6rem;
    top: -1.2rem;
    width: 5.4rem;
}
.yfsl-hero-inner {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(3.2rem, 4.6rem);
    min-height: 5.2rem;
    padding-top: .5rem;
    position: relative;
    z-index: 2;
}
.yfsl-breadcrumb {
    align-items: center;
    color: rgba(255, 255, 255, .62);
    display: flex;
    flex-wrap: wrap;
    font-size: 13px;
    gap: 10px;
    grid-column: 1/-1;
    margin-bottom: .22rem;
}
.yfsl-breadcrumb a { color: rgba(255, 255, 255, .62); }
.yfsl-breadcrumb strong { color: #fff; font-weight: 400; }
.yfsl-hero-copy {
    align-self: center;
    padding-bottom: .3rem;
}
.yfsl-eyebrow {
    color: #f47b68;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: .17em;
    line-height: 1.4;
}
.yfsl-hero h1 {
    font-size: 52px;
    font-weight: 700;
    letter-spacing: -.03em;
    line-height: 1.12;
    margin-top: .14rem;
}
.yfsl-hero h1 em,
.yfsl-intro-copy h2 em,
.yfsl-academic h2 em,
.yfsl-directions h2 em,
.yfsl-team h2 em {
    color: #f47b68;
    font-style: normal;
}
.yfsl-hero-copy > p {
    color: rgba(255, 255, 255, .72);
    font-size: clamp(15px, 1.05vw, 18px);
    line-height: 1.8;
    margin-top: .22rem;
    max-width: 6.4rem;
}
.yfsl-hero-actions {
    align-items: center;
    display: flex;
    gap: .26rem;
    margin-top: .32rem;
}
.yfsl-primary-action {
    align-items: center;
    background: var(--brand-primary, #E73216);
    border: 1px solid var(--brand-primary, #E73216);
    border-radius: 999px;
    color: #fff;
    display: inline-flex;
    font-size: 15px;
    font-weight: 600;
    gap: .12rem;
    line-height: 1;
    padding: .16rem .34rem;
    text-decoration: none;
    transition: background-color .3s, box-shadow .3s, transform .3s;
}
.yfsl-primary-action span {
    font-size: 17px;
    font-weight: 400;
    line-height: 1;
    transition: transform .3s;
}
.yfsl-primary-action:hover {
    background: #c92b11;
    box-shadow: 0 10px 24px rgba(231, 50, 22, .3);
    color: #fff;
    transform: translateY(-2px);
}
.yfsl-primary-action:hover span { transform: translateX(3px); }
.yfsl-text-action {
    border: 1px solid rgba(255, 255, 255, .34);
    border-radius: 999px;
    color: rgba(255, 255, 255, .9);
    display: inline-flex;
    font-size: 15px;
    gap: .1rem;
    line-height: 1;
    padding: .16rem .32rem;
    text-decoration: none;
    transition: border-color .3s, color .3s, background-color .3s;
}
.yfsl-text-action:hover {
    background: rgba(255, 255, 255, .1);
    border-color: #fff;
    color: #fff;
}
.yfsl-hero-badge {
    align-items: center;
    display: flex;
    justify-content: center;
    position: relative;
}
.yfsl-badge-halo {
    background: radial-gradient(circle, rgba(244, 123, 104, .5) 0%, transparent 64%);
    border-radius: 50%;
    height: 3.4rem;
    position: absolute;
    width: 3.4rem;
}
.yfsl-badge-core {
    align-items: center;
    border: 1px solid rgba(255, 255, 255, .22);
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    height: 2.1rem;
    justify-content: center;
    position: relative;
    text-align: center;
    width: 2.1rem;
}
.yfsl-badge-core small {
    color: #f47b68;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: .12em;
}
.yfsl-badge-core strong {
    color: #fff;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: .04em;
    line-height: 1.25;
    margin-top: .05rem;
}

/* ---------- 区块通用 ---------- */
.yfsl-section-head {
    align-items: flex-end;
    display: flex;
    gap: .4rem;
    justify-content: space-between;
    margin-bottom: .42rem;
}
.yfsl-section-head h2 {
    color: #231815;
    font-size: clamp(28px, 2.35vw, 42px);
    font-weight: 700;
    letter-spacing: -.01em;
    line-height: 1.25;
    margin: .14rem 0 0;
}
.yfsl-section-head > p {
    color: #9A9591;
    flex: 0 1 auto;
    font-size: 15px;
    line-height: 1.7;
    margin: 0 0 .05rem;
    min-width: 4rem;
    text-align: right;
}

/* ---------- 研发体系 ---------- */
.yfsl-intro {
    background: #fff;
    padding: .8rem 0;
}
.yfsl-intro-inner {
    align-items: center;
    display: grid;
    gap: .6rem;
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 1fr);
}
.yfsl-media-frame {
    aspect-ratio: 16 / 10;
    background: #f0f2f3;
    border-radius: .12rem;
    overflow: hidden;
    position: relative;
}
.yfsl-media-corner {
    border-color: var(--brand-primary, #E73216) transparent transparent var(--brand-primary, #E73216);
    border-style: solid;
    border-width: 1px;
    height: .34rem;
    left: .2rem;
    position: absolute;
    top: .2rem;
    width: .34rem;
    z-index: 1;
}
.yfsl-media-frame img {
    display: block;
    height: 100%;
    object-fit: cover;
    width: 100%;
    transition: transform .5s;
}
.yfsl-intro-media:hover .yfsl-media-frame img { transform: scale(1.03); }
.yfsl-image-note {
    color: #9A9591;
    font-size: 12px;
    line-height: 1.6;
    margin: .12rem 0 0;
}
.yfsl-intro-copy h2,
.yfsl-academic h2,
.yfsl-directions h2,
.yfsl-team h2 {
    color: #231815;
    font-size: clamp(28px, 2.35vw, 42px);
    font-weight: 700;
    letter-spacing: -.01em;
    line-height: 1.25;
    margin: .14rem 0 .2rem;
}
.yfsl-intro-copy > p {
    color: #625F5D;
    font-size: 15px;
    line-height: 1.8;
    margin: 0;
}
.yfsl-intro-copy > p strong {
    color: var(--brand-primary, #E73216);
    font-weight: 600;
}
.yfsl-intro-tags {
    display: flex;
    flex-wrap: wrap;
    gap: .12rem;
    margin-top: .32rem;
}
.yfsl-intro-tags span {
    background: #fdf3f0;
    border: 1px solid rgba(231, 50, 22, .16);
    border-radius: 999px;
    color: #231815;
    font-size: 13px;
    line-height: 1;
    padding: .12rem .24rem;
    transition: background .3s, border-color .3s, color .3s;
}
.yfsl-intro-tags span:hover {
    background: #fff;
    border-color: rgba(231, 50, 22, .34);
    color: var(--brand-primary, #E73216);
}

/* ---------- 学术背景 ---------- */
.yfsl-academic {
    background: #f6f8f8;
    padding: .8rem 0;
}
.yfsl-schools-grid {
    display: grid;
    gap: .24rem;
    grid-template-columns: repeat(3, minmax(0, 1fr));
}
/* 卡片用两列网格：左侧 logo 竖跨两行，右侧上校名、下国家/地区。
   校名是主体，logo 只作小点缀。 */
.yfsl-school-card {
    align-items: center;
    background: #fff;
    border: 1px solid #f0f2f3;
    border-radius: .12rem;
    box-sizing: border-box;
    column-gap: clamp(10px, .9vw, 16px);
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    grid-template-rows: auto auto;
    padding: .28rem .3rem;
    text-align: left;
    transition: border-color .3s, box-shadow .3s, transform .3s;
}
.yfsl-school-card:hover {
    border-color: rgba(231, 50, 22, .18);
    box-shadow: 0 16px 34px rgba(35, 24, 21, .08);
    transform: translateY(-3px);
}
.yfsl-school-logo {
    align-items: center;
    display: flex;
    grid-column: 1;
    grid-row: 1 / 3;
    height: clamp(22px, 1.6vw, 30px);
    justify-content: flex-start;
}
/* 统一大小：所有 logo 统一“高度”，宽度按各自比例自然伸缩。
   方形校徽与长条字标因此视觉大小一致（此前同时限制宽高，
   字标只有 18px 高、校徽 36px 高，高度差一倍才显得不协调）。 */
.yfsl-school-logo img {
    display: block;
    height: 100%;
    object-fit: contain;
    transition: transform .4s;
    width: auto;
}
.yfsl-school-card:hover .yfsl-school-logo img { transform: scale(1.05); }
.yfsl-school-name {
    align-self: end;
    color: #231815;
    font-size: clamp(16px, 1.15vw, 18px);
    font-weight: 700;
    grid-column: 2;
    grid-row: 1;
    line-height: 1.35;
}
.yfsl-school-country {
    align-self: start;
    color: #9A9591;
    font-size: 13px;
    grid-column: 2;
    grid-row: 2;
    line-height: 1.5;
    margin-top: 2px;
}

/* ---------- 三大研发方向 ---------- */
.yfsl-directions {
    background: #fff;
    padding: .8rem 0;
}
.yfsl-directions-grid {
    display: grid;
    gap: .34rem;
    grid-template-columns: repeat(3, minmax(0, 1fr));
}
.yfsl-direction-card {
    background: #f6f8f8;
    border: 1px solid #f0f2f3;
    border-radius: .12rem;
    box-sizing: border-box;
    overflow: hidden;
    transition: box-shadow .3s, transform .3s;
}
.yfsl-direction-card:hover {
    box-shadow: 0 16px 34px rgba(35, 24, 21, .1);
    transform: translateY(-3px);
}
.yfsl-direction-media {
    aspect-ratio: 16 / 10;
    overflow: hidden;
}
.yfsl-direction-media img {
    display: block;
    height: 100%;
    object-fit: cover;
    transition: transform .5s;
    width: 100%;
}
.yfsl-direction-card:hover .yfsl-direction-media img { transform: scale(1.05); }
.yfsl-direction-body { padding: .32rem .34rem .38rem; }
.yfsl-direction-tag {
    color: var(--brand-primary, #E73216);
    display: block;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: .12em;
}
.yfsl-direction-body h3 {
    color: #231815;
    font-size: clamp(19px, 1.6vw, 24px);
    font-weight: 700;
    margin: .14rem 0 .1rem;
}
.yfsl-direction-body p {
    color: #625F5D;
    font-size: 14px;
    line-height: 1.8;
    margin: 0;
}

/* ---------- 核心研发团队 ---------- */
.yfsl-team {
    background: #f6f8f8;
    padding: .8rem 0;
}
.yfsl-team-grid {
    display: grid;
    gap: .28rem;
    grid-template-columns: repeat(5, minmax(0, 1fr));
}
.yfsl-member-card {
    background: #fff;
    border: 1px solid #f0f2f3;
    border-radius: .12rem;
    box-sizing: border-box;
    padding: .36rem .3rem .34rem;
    text-align: center;
    transition: box-shadow .3s, transform .3s;
}
.yfsl-member-card:hover {
    box-shadow: 0 18px 38px rgba(35, 24, 21, .1);
    transform: translateY(-3px);
}
.yfsl-member-photo {
    background: linear-gradient(160deg, #fdf3f0 0%, #f7e7e1 100%);
    border: 1px solid rgba(231, 50, 22, .12);
    border-radius: 50%;
    height: clamp(104px, 7.4vw, 142px);
    margin: 0 auto .22rem;
    overflow: hidden;
    width: clamp(104px, 7.4vw, 142px);
}
.yfsl-member-photo img {
    display: block;
    height: 100%;
    object-fit: cover;
    object-position: center top;
    width: 100%;
}
.yfsl-member-card h3 {
    color: #231815;
    font-size: clamp(17px, 1.3vw, 20px);
    font-weight: 700;
    line-height: 1.35;
    margin: 0;
}
.yfsl-member-role {
    color: var(--brand-primary, #E73216);
    font-size: 13px;
    font-weight: 700;
    line-height: 1.5;
    margin-top: .06rem;
}
.yfsl-member-degree {
    color: #9A9591;
    font-size: 12px;
    line-height: 1.5;
    margin-top: .02rem;
}
.yfsl-member-card p {
    border-top: 1px solid rgba(35, 24, 21, .08);
    color: #625F5D;
    font-size: 13px;
    line-height: 1.75;
    margin: .2rem 0 0;
    padding-top: .18rem;
    text-align: left;
}

/* ---------- CTA（品牌橙红渐变，与 jspt / jszc 一致） ---------- */
.yfsl-cta {
    background: #f6f8f8;
    padding: 0 0 .8rem;
}
.yfsl-cta-inner {
    align-items: center;
    background: linear-gradient(120deg, #E73216 0%, #EA5B16 100%);
    border-radius: .12rem;
    box-shadow: 0 14px 30px rgba(234, 91, 22, .22);
    color: #fff;
    display: flex;
    gap: .4rem;
    justify-content: space-between;
    overflow: hidden;
    padding: .5rem .6rem;
    position: relative;
}
.yfsl-cta-inner::after {
    background: radial-gradient(circle, rgba(255, 255, 255, .3) 0%, transparent 60%);
    content: "";
    height: 3rem;
    position: absolute;
    right: -.6rem;
    top: -1rem;
    width: 3.6rem;
}
.yfsl-cta .yfsl-eyebrow { color: rgba(255, 255, 255, .82); }
.yfsl-cta h2 {
    color: #fff;
    font-size: clamp(22px, 2vw, 30px);
    font-weight: 700;
    line-height: 1.35;
    margin: .12rem 0 .1rem;
}
.yfsl-cta p {
    color: rgba(255, 255, 255, .92);
    font-size: 15px;
    line-height: 1.8;
    margin: 0;
}
.yfsl-cta-inner > a {
    position: relative;
    white-space: nowrap;
    z-index: 1;
}
.yfsl-cta-inner .yfsl-primary-action {
    background: #fff;
    border-color: #fff;
    color: var(--brand-primary, #E73216);
}
.yfsl-cta-inner .yfsl-primary-action:hover {
    background: #fff3ec;
    border-color: #fff;
    color: var(--brand-primary, #E73216);
}

/* ---------- 响应式 ---------- */
@media (max-width: 1399px) {
    .yfsl-team-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (max-width: 991px) {
    .yfsl-hero-inner { grid-template-columns: 1fr; }
    .yfsl-hero-badge { display: none; }
    .yfsl-section-head { align-items: flex-start; flex-direction: column; gap: .1rem; }
    .yfsl-section-head > p { max-width: none; text-align: left; }
    .yfsl-intro-inner { grid-template-columns: 1fr; }
    .yfsl-schools-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .yfsl-directions-grid { grid-template-columns: 1fr; }
    .yfsl-team-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .yfsl-cta-inner { align-items: flex-start; flex-direction: column; }
}
@media (max-width: 767px) {
    .yfsl-hero-inner {
        grid-template-columns: 1fr;
        min-height: 4.8rem;
        padding-top: .34rem;
    }
    .yfsl-hero h1 { font-size: clamp(30px, 8vw, 44px); }
    .yfsl-intro,
    .yfsl-academic,
    .yfsl-directions,
    .yfsl-team { padding: .62rem 0; }
    .yfsl-schools-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .16rem; }
    .yfsl-school-card { column-gap: 8px; padding: .22rem .18rem; }
    .yfsl-school-logo { height: 22px; }
    .yfsl-school-name { font-size: 15px; }
    .yfsl-team-grid { grid-template-columns: 1fr; }
    .yfsl-member-card { text-align: left; }
    .yfsl-member-photo { margin-left: 0; }
    .yfsl-cta-inner { padding: .42rem .36rem; }
}
@media (max-width: 560px) {
    /* 窄屏下单列：避免长条 logo 把校名挤成两行 */
    .yfsl-schools-grid { grid-template-columns: 1fr; }
}
@media (max-width: 380px) {
    .yfsl-hero-actions { align-items: flex-start; flex-direction: column; }
    .yfsl-team-grid { grid-template-columns: 1fr; }
}

/* 内页 banner 不展示数字数据条（与 about 页之外的规则保持一致） */
.yfsl-proof-bar { display: none; }