:root {
    --bg: #f8fafc;
    --surface: #ffffff;
    --surface-soft: #eef8f1;
    --text: #18212f;
    --muted: #667085;
    --line: #d8e0ea;
    --primary: #2f7d50;
    --primary-dark: #246640;
    --accent: #1f6feb;
    --warm: #f59e0b;
    --danger: #b42318;
    --success: #087443;
    --shadow: 0 16px 40px rgba(31, 56, 88, .12);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", Arial, sans-serif;
    line-height: 1.6;
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    max-width: 100%;
    display: block;
}

.container {
    width: min(1120px, calc(100% - 32px));
    margin: 0 auto;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    background: rgba(255, 255, 255, .94);
    border-bottom: 1px solid var(--line);
    backdrop-filter: blur(12px);
}

.header-inner {
    min-height: 78px;
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 18px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    white-space: nowrap;
}

.brand img {
    width: 42px;
    height: 42px;
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 4px;
    background: #fff;
}

.brand-note {
    justify-self: start;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--muted);
    border: 1px solid var(--line);
    background: var(--surface-soft);
    border-radius: 999px;
    padding: 4px 12px;
    font-size: 13px;
}

.brand-note span {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--accent);
}

.site-nav {
    display: flex;
    align-items: center;
    justify-content: end;
    gap: 20px;
    font-size: 14px;
    font-weight: 600;
}

.site-nav a {
    color: var(--muted);
}

.site-nav a:hover,
.site-nav a.active {
    color: var(--primary);
}

.site-nav .nav-cta {
    color: #fff;
    background: var(--primary);
    padding: 9px 16px;
    border-radius: 999px;
}

.menu-button {
    display: none;
    width: 42px;
    height: 42px;
    border: 1px solid var(--line);
    background: var(--surface);
    border-radius: 8px;
    padding: 9px;
}

.menu-button span {
    display: block;
    height: 2px;
    margin: 5px 0;
    background: var(--text);
}

.hero {
    background-size: cover;
    background-position: center;
    padding: 84px 0 76px;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.1fr .9fr;
    gap: 54px;
    align-items: center;
}

.badge-row,
.tag-row,
.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: center;
}

.badge-row span,
.tag-row span {
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, .86);
    border-radius: 999px;
    color: var(--muted);
    font-size: 13px;
    font-weight: 700;
    padding: 5px 12px;
}

.hero h1 {
    margin: 22px 0 16px;
    font-size: 58px;
    line-height: 1.12;
    letter-spacing: 0;
}

.hero h1 strong {
    display: block;
    color: var(--primary);
}

.hero-copy > p,
.section-heading > p,
.page-hero p {
    color: var(--muted);
    font-size: 18px;
    max-width: 680px;
}

.tag-row {
    margin-top: 24px;
}

.hero-actions {
    margin-top: 30px;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid transparent;
    border-radius: 8px;
    font-weight: 700;
    padding: 11px 18px;
    cursor: pointer;
    transition: transform .18s ease, background .18s ease, border-color .18s ease;
}

.button:hover {
    transform: translateY(-1px);
}

.button.primary {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
}

.button.primary:hover {
    background: var(--primary-dark);
}

.button.ghost {
    background: #fff;
    border-color: var(--line);
    color: var(--text);
}

.button.large {
    font-size: 17px;
    padding: 14px 22px;
}

.button.block {
    width: 100%;
}

.notice-line {
    margin-top: 18px;
    border: 1px solid var(--line);
    border-left: 4px solid var(--warm);
    border-radius: 8px;
    background: rgba(255, 255, 255, .86);
    color: var(--muted);
    padding: 11px 14px;
}

.info-grid,
.step-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
    margin-top: 18px;
}

.info-grid article,
.step-grid article,
.project-card,
.material-grid article,
.faq-list article,
.side-panel,
.form-card,
.timeline article {
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, .94);
    border-radius: 8px;
    box-shadow: 0 8px 24px rgba(31, 56, 88, .06);
}

.info-grid article,
.step-grid article {
    padding: 16px;
}

.info-grid span,
.step-grid span,
.eyebrow {
    color: var(--accent);
    font-size: 13px;
    font-weight: 800;
    letter-spacing: .08em;
}

.info-grid p,
.step-grid p {
    margin: 6px 0 0;
    font-weight: 700;
}

.hero-media img {
    width: 100%;
    height: 380px;
    object-fit: cover;
    border-radius: 8px;
    border: 1px solid var(--line);
    box-shadow: var(--shadow);
}
.hero-promo-video {
    display: block;
    width: 100%;
    height: 380px;
    object-fit: cover;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: #101828;
    box-shadow: var(--shadow);
}

.section {
    padding: 72px 0;
}

.soft-section {
    background: linear-gradient(180deg, #fff, #eef6f2);
}

.section-heading {
    max-width: 720px;
    margin-bottom: 34px;
}

.section-heading h2,
.page-hero h1,
.info-band h2 {
    margin: 10px 0 12px;
    font-size: 38px;
    line-height: 1.2;
    letter-spacing: 0;
}

.project-grid,
.material-grid,
.faq-list {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
}

.project-card {
    padding: 24px;
}

.card-top {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    align-items: center;
}

.card-top span {
    color: var(--accent);
    font-weight: 700;
}

.card-top b {
    color: var(--primary);
    background: #eef4ff;
    border: 1px solid #c7dcff;
    border-radius: 999px;
    padding: 4px 9px;
    font-size: 12px;
}

.project-card h3 {
    font-size: 22px;
    margin: 22px 0 8px;
}

.project-card p,
.project-card li,
.material-grid p,
.faq-list p,
.side-panel p,
.form-tip,
.form-actions p,
.footer-grid p,
.footer-bottom {
    color: var(--muted);
}

.project-card ul {
    padding: 0;
    margin: 18px 0;
    list-style: none;
}

.project-card li {
    position: relative;
    padding-left: 18px;
    margin: 8px 0;
}

.project-card li::before {
    content: "";
    position: absolute;
    left: 0;
    top: .75em;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--primary);
}

.cta-band,
.info-band {
    margin-top: 36px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    border: 1px solid var(--line);
    background: #fff;
    border-radius: 8px;
    padding: 24px;
}

.cta-band h3,
.info-band h2 {
    margin: 0 0 8px;
}

.cta-band p,
.info-band p {
    margin: 0;
    color: var(--muted);
}

.page-hero {
    background: linear-gradient(120deg, #eef4ff, #eef6f2);
}

.page-hero.compact {
    padding: 64px 0;
}

.two-column {
    display: grid;
    grid-template-columns: .8fr 1.2fr;
    gap: 24px;
    align-items: start;
}

.side-panel,
.form-card {
    padding: 26px;
}

.side-panel h2,
.form-title h2 {
    margin: 0 0 10px;
}

.side-panel h3,
.form-section-title {
    margin: 28px 0 10px;
}

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

.check-list li {
    margin: 10px 0;
    padding-left: 24px;
    position: relative;
}

.check-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--success);
    font-weight: 800;
}

.field-grid {
    display: grid;
    gap: 16px;
}

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

label {
    display: block;
    margin-bottom: 16px;
}

label span {
    display: block;
    margin-bottom: 7px;
    color: #344054;
    font-size: 14px;
    font-weight: 700;
}

input,
select,
textarea {
    width: 100%;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: #fff;
    color: var(--text);
    font: inherit;
    padding: 11px 12px;
    outline: none;
}

input:focus,
select:focus,
textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(31, 111, 235, .12);
}

textarea {
    resize: vertical;
}

.form-title {
    margin-bottom: 20px;
}

.form-title p {
    margin: 0;
    color: var(--muted);
}

.form-tip {
    margin: 4px 0 18px;
    font-size: 14px;
}

.form-actions {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    border-top: 1px solid var(--line);
    padding-top: 18px;
}

.notice {
    border-radius: 8px;
    padding: 12px 14px;
    margin: 0 0 18px;
}

.notice p {
    margin: 4px 0;
}

.notice.success {
    border: 1px solid #abefc6;
    background: #ecfdf3;
    color: var(--success);
}

.notice.danger {
    border: 1px solid #fecdca;
    background: #fef3f2;
    color: var(--danger);
}

.material-grid article {
    padding: 24px;
}

.material-grid span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 8px;
    background: #eef4ff;
    color: var(--primary);
    font-weight: 800;
}

.material-grid h2,
.faq-list h2 {
    font-size: 20px;
    margin: 18px 0 8px;
}

.material-grid b {
    display: block;
    color: var(--warm);
    font-size: 14px;
    margin-top: 12px;
}

.timeline {
    display: grid;
    gap: 16px;
}

.timeline article {
    display: grid;
    grid-template-columns: 48px 1fr;
    gap: 18px;
    padding: 20px;
}

.timeline span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 8px;
    background: var(--primary);
    color: #fff;
    font-weight: 800;
}

.timeline h2 {
    margin: 0 0 6px;
    font-size: 20px;
}

.timeline p {
    margin: 0;
    color: var(--muted);
}

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

.faq-list article {
    padding: 22px;
}

.contact-lines {
    display: grid;
    gap: 8px;
    margin-top: 20px;
}

.contact-lines span {
    color: var(--muted);
    font-size: 13px;
}

.contact-lines strong {
    font-size: 18px;
}

.site-footer {
    background: #101828;
    color: #fff;
    padding: 56px 0 24px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr repeat(3, 1fr);
    gap: 28px;
}

.footer-grid h2 {
    margin: 10px 0;
    font-size: 28px;
}

.footer-grid h3 {
    margin: 0 0 12px;
}

.footer-grid a:not(.button),
.footer-grid p {
    display: block;
    margin: 8px 0;
    color: #cbd5e1;
}

.footer-main .button {
    margin-top: 16px;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    border-top: 1px solid rgba(255, 255, 255, .15);
    margin-top: 36px;
    padding-top: 18px;
    font-size: 13px;
}

@media (max-width: 980px) {
    .header-inner {
        grid-template-columns: auto 1fr auto;
    }

    .brand-note {
        display: none;
    }

    .menu-button {
        display: block;
    }

    .site-nav {
        display: none;
        grid-column: 1 / -1;
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        border-top: 1px solid var(--line);
        padding: 12px 0;
    }

    .site-nav.open {
        display: flex;
    }

    .site-nav a {
        padding: 12px 4px;
    }

    .site-nav .nav-cta {
        text-align: center;
        margin-top: 8px;
    }

    .hero-grid,
    .two-column,
    .footer-grid {
        grid-template-columns: 1fr;
    }

    .project-grid,
    .material-grid {
        grid-template-columns: 1fr;
    }

    .hero {
        padding: 58px 0;
    }

    .hero-media img {
        height: 300px;
    }
    .hero-promo-video {
        height: 300px;
    }
}

@media (max-width: 680px) {
    .container {
        width: min(100% - 24px, 1120px);
    }

    .brand span {
        max-width: 210px;
        white-space: normal;
        line-height: 1.25;
    }

    .field-grid.two,
    .info-grid,
    .step-grid,
    .faq-list {
        grid-template-columns: 1fr;
    }

    .form-actions,
    .cta-band,
    .info-band,
    .footer-bottom {
        align-items: stretch;
        flex-direction: column;
    }

    .hero h1 {
        font-size: 38px;
    }

    .section {
        padding: 52px 0;
    }
}


.hero-media {
    position: relative;
}

.hero-video-card {
    position: absolute;
    left: 18px;
    right: 18px;
    bottom: 18px;
    display: grid;
    grid-template-columns: 48px 1fr;
    gap: 12px;
    align-items: center;
    border: 1px solid rgba(255, 255, 255, .72);
    border-radius: 8px;
    background: rgba(255, 255, 255, .9);
    padding: 13px;
    box-shadow: 0 16px 38px rgba(31, 56, 88, .16);
    backdrop-filter: blur(12px);
}

.hero-video-card span,
.content-card span {
    color: var(--accent);
    font-size: 13px;
    font-weight: 800;
}

.hero-video-card p {
    margin: 4px 0 0;
    color: var(--muted);
    font-size: 14px;
}

.play-button {
    width: 46px;
    height: 46px;
    border: 0;
    border-radius: 50%;
    background: var(--primary);
    position: relative;
    cursor: pointer;
    box-shadow: 0 10px 20px rgba(47, 125, 80, .28);
}

.play-button::after {
    content: "";
    position: absolute;
    left: 18px;
    top: 14px;
    border-left: 15px solid #fff;
    border-top: 9px solid transparent;
    border-bottom: 9px solid transparent;
}

.content-section {
    background: #fff;
}

.showcase-grid {
    display: grid;
    grid-template-columns: 1.15fr .85fr .85fr;
    gap: 18px;
    align-items: stretch;
}

.content-card,
.feature-strip article {
    border: 1px solid var(--line);
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 10px 28px rgba(31, 56, 88, .07);
    overflow: hidden;
}

.content-card {
    display: grid;
    min-height: 260px;
}

.content-card.tall {
    grid-row: span 2;
}

.content-card img,
.note-cover,
.video-cover {
    width: 100%;
    height: 210px;
    object-fit: cover;
}

.content-card.tall img {
    height: 330px;
}

.content-card > div:last-child {
    padding: 20px;
}

.content-card h3 {
    margin: 8px 0;
    font-size: 22px;
    line-height: 1.28;
}

.content-card p,
.feature-strip p {
    margin: 0;
    color: var(--muted);
}

.note-cover,
.video-cover {
    display: grid;
    place-items: center;
    color: #fff;
    font-size: 28px;
    font-weight: 900;
}

.green-cover {
    background: linear-gradient(135deg, #2f7d50, #1f6feb);
}

.amber-cover {
    background: linear-gradient(135deg, #f59e0b, #2f7d50);
}

.video-cover {
    background: linear-gradient(135deg, #172033, #1f6feb);
}

.feature-strip {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
}

.feature-strip article {
    padding: 22px;
}

.feature-strip span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: 8px;
    background: #eef8f1;
    color: var(--primary);
    font-weight: 900;
}

.feature-strip h3 {
    margin: 16px 0 8px;
    font-size: 19px;
}

.cta-section {
    padding-top: 0;
}

@media (max-width: 980px) {
    .showcase-grid,
    .feature-strip {
        grid-template-columns: 1fr 1fr;
    }

    .hero h1 {
        font-size: 44px;
    }
}

@media (max-width: 680px) {
    .showcase-grid,
    .feature-strip {
        grid-template-columns: 1fr;
    }

    .hero-video-card {
        position: static;
        margin-top: 14px;
    }

    .content-card.tall img,
    .content-card img,
    .note-cover,
    .video-cover {
        height: 220px;
    }
}
@media (max-width: 680px) {
    .hero h1 {
        font-size: 36px;
    }
}
.promo-video {
    display: block;
    width: 100%;
    height: 210px;
    object-fit: cover;
    background: #172033;
}

@media (max-width: 680px) {
    .promo-video {
        height: 220px;
    }
}
/* 招生转化优化 */
.top-strip {
    background: #10261b;
    color: #e7f6ed;
    font-size: 14px;
}

.top-strip-inner {
    min-height: 42px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.top-strip a {
    color: #10261b;
    background: #f7d36b;
    border-radius: 8px;
    padding: 5px 12px;
    font-weight: 800;
    white-space: nowrap;
}

.trust-panel {
    background: #fff;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
}

.trust-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0;
}

.trust-grid article {
    padding: 20px 22px;
    border-right: 1px solid var(--line);
}

.trust-grid article:last-child {
    border-right: 0;
}

.trust-grid b {
    display: block;
    color: var(--primary);
    font-size: 22px;
    line-height: 1.2;
}

.trust-grid span {
    display: block;
    margin-top: 6px;
    color: var(--muted);
    font-size: 14px;
}

.apply-promise {
    margin-top: 22px;
    border: 1px solid #abefc6;
    background: #ecfdf3;
    border-radius: 8px;
    padding: 14px;
}

.apply-promise strong,
.apply-promise span {
    display: block;
}

.apply-promise strong {
    color: var(--success);
    margin-bottom: 4px;
}

.apply-promise span {
    color: #37624a;
    font-size: 14px;
}

.side-cta {
    margin-top: 14px;
}

.form-benefits {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 12px;
}

.form-benefits span {
    border: 1px solid #c7dcff;
    background: #eef4ff;
    color: #24539a;
    border-radius: 999px;
    padding: 5px 10px;
    font-size: 13px;
    font-weight: 700;
}

.floating-apply {
    display: none;
}

a.play-button {
    display: inline-block;
}

@media (max-width: 980px) {
    .top-strip-inner {
        justify-content: center;
        flex-wrap: wrap;
        padding: 8px 0;
    }

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

    .trust-grid article:nth-child(2) {
        border-right: 0;
    }

    .trust-grid article {
        border-bottom: 1px solid var(--line);
    }

    .trust-grid article:nth-last-child(-n+2) {
        border-bottom: 0;
    }
}

@media (max-width: 680px) {
    .top-strip-inner span:nth-child(2) {
        display: none;
    }

    .trust-grid {
        grid-template-columns: 1fr;
    }

    .trust-grid article,
    .trust-grid article:nth-child(2),
    .trust-grid article:nth-last-child(-n+2) {
        border-right: 0;
        border-bottom: 1px solid var(--line);
    }

    .trust-grid article:last-child {
        border-bottom: 0;
    }

    .floating-apply {
        position: fixed;
        left: 16px;
        right: 16px;
        bottom: 14px;
        z-index: 30;
        display: flex;
        justify-content: center;
        align-items: center;
        min-height: 48px;
        border-radius: 8px;
        background: var(--primary);
        color: #fff;
        font-weight: 900;
        box-shadow: 0 14px 30px rgba(47, 125, 80, .32);
    }

    .site-footer {
        padding-bottom: 82px;
    }
}

.content-more {
    display: inline-flex;
    margin-top: 14px;
    color: var(--primary);
    font-size: 14px;
    font-weight: 800;
}

.content-card.tall .promo-video {
    height: 330px;
}

.article-heading {
    max-width: 860px;
}

.article-heading > span {
    color: var(--muted);
    font-size: 14px;
}

.article-section {
    background: #fff;
}

.article-body {
    width: min(820px, calc(100% - 32px));
}

.article-cover,
.article-video {
    display: block;
    width: 100%;
    max-height: 520px;
    object-fit: cover;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: #101828;
    box-shadow: var(--shadow);
}

.article-content {
    padding: 34px 0 18px;
    color: #344054;
    font-size: 18px;
    line-height: 1.9;
}

.article-content p {
    margin: 0 0 22px;
}

.article-actions {
    display: flex;
    gap: 12px;
    border-top: 1px solid var(--line);
    padding-top: 22px;
}

@media (max-width: 680px) {
    .content-card.tall .promo-video {
        height: 220px;
    }

    .article-content {
        padding-top: 24px;
        font-size: 16px;
    }

    .article-actions {
        align-items: stretch;
        flex-direction: column;
    }
}