:root {
    --bg: #eff3f8;
    --surface: rgba(255, 255, 255, 0.82);
    --surface-strong: #ffffff;
    --surface-dark: #0d1f42;
    --ink: #152644;
    --muted: #5a6a84;
    --line: rgba(30, 63, 118, 0.12);
    --brand: #0f4db8;
    --brand-deep: #0a2f78;
    --brand-soft: #d9e6ff;
    --accent: #ffb400;
    --accent-soft: rgba(255, 180, 0, 0.16);
    --shadow: 0 24px 60px rgba(14, 34, 73, 0.12);
    --radius-xl: 28px;
    --radius-lg: 22px;
    --radius-md: 16px;
    --container: min(1180px, calc(100% - 2rem));
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    margin: 0;
    font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    color: var(--ink);
    background:
        radial-gradient(circle at top left, rgba(15, 77, 184, 0.16), transparent 30%),
        radial-gradient(circle at top right, rgba(255, 180, 0, 0.12), transparent 22%),
        linear-gradient(180deg, #f6f9fd 0%, #edf2f8 45%, #e7eef6 100%);
    text-rendering: optimizeLegibility;
}

body.menu-open {
    overflow: hidden;
}

a {
    color: inherit;
    text-decoration: none;
    overflow-wrap: anywhere;
}

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

p,
h1,
h2,
h3 {
    margin: 0;
    overflow-wrap: anywhere;
}

li {
    overflow-wrap: anywhere;
}

.container {
    width: var(--container);
    margin: 0 auto;
}

.section {
    padding: 5.5rem 0;
}

section[id],
footer[id] {
    scroll-margin-top: 104px;
}

.alt {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.22), rgba(255, 255, 255, 0.54));
    border-block: 1px solid rgba(255, 255, 255, 0.35);
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    margin-bottom: 1rem;
    font-size: 0.84rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--brand-deep);
}

.eyebrow::before {
    content: "";
    width: 34px;
    height: 2px;
    border-radius: 999px;
    background: linear-gradient(90deg, var(--accent), var(--brand));
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    backdrop-filter: blur(18px);
    background: rgba(245, 249, 255, 0.8);
    border-bottom: 1px solid transparent;
    transition: background 180ms ease, border-color 180ms ease;
}

.site-header.is-scrolled {
    background: rgba(245, 249, 255, 0.94);
    border-color: rgba(15, 77, 184, 0.1);
}

.header-inner {
    min-height: 88px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.brand img,
.footer-brand img {
    width: 176px;
    height: auto;
}

.desktop-nav {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.desktop-nav a,
.mobile-nav a {
    font-size: 0.95rem;
    font-weight: 600;
    color: #24456e;
}

.desktop-nav a {
    padding: 0.65rem 0.9rem;
    border-radius: 999px;
    transition: background 180ms ease, color 180ms ease;
}

.desktop-nav a:hover {
    background: rgba(15, 77, 184, 0.09);
    color: var(--brand-deep);
}

.menu-btn {
    display: none;
    width: 44px;
    height: 44px;
    border: 1px solid rgba(15, 77, 184, 0.16);
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.7);
    padding: 0;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 4px;
}

.menu-btn span {
    width: 18px;
    height: 2px;
    border-radius: 999px;
    background: var(--brand-deep);
}

.mobile-menu {
    display: none;
    border-top: 1px solid rgba(15, 77, 184, 0.08);
}

.mobile-menu.open {
    display: block;
}

.mobile-nav {
    display: grid;
    gap: 0.35rem;
    padding: 0.75rem 1rem 1rem;
}

.mobile-nav a {
    padding: 0.8rem 0.9rem;
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.7);
}

.hero {
    padding: 3.5rem 0 2.2rem;
}

.hero-grid,
.split-layout,
.football-grid,
.product-band {
    display: grid;
    gap: 1.4rem;
}

.hero-grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
    align-items: stretch;
}

.hero-copy,
.hero-panel,
.section-intro,
.media-card,
.feature-card,
.insight-card,
.solution-card,
.football-card,
.stat-card {
    background: var(--surface);
    border: 1px solid rgba(255, 255, 255, 0.52);
    box-shadow: var(--shadow);
    backdrop-filter: blur(12px);
    min-width: 0;
}

.hero-copy,
.hero-panel,
.section-intro,
.insight-card,
.football-card {
    border-radius: var(--radius-xl);
}

.hero-copy,
.section-intro,
.insight-card,
.football-card {
    padding: 2rem;
}

.hero-copy {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.hero-copy h1 {
    font-size: clamp(2.2rem, 4vw, 4.4rem);
    line-height: 1.08;
    letter-spacing: -0.03em;
    margin-bottom: 1rem;
    max-width: 11ch;
}

.lead,
.section-intro p,
.section-head p,
.insight-card p,
.football-copy p,
.football-card p,
.feature-card p,
.solution-card p,
.footer-muted {
    color: var(--muted);
}

.lead {
    font-size: 1.05rem;
    max-width: 54ch;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
    margin: 1.8rem 0 1.35rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 50px;
    padding: 0 1.25rem;
    border-radius: 999px;
    font-weight: 700;
    transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

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

.btn-primary {
    background: linear-gradient(135deg, var(--brand) 0%, #1b68e2 100%);
    color: #fff;
    box-shadow: 0 18px 30px rgba(15, 77, 184, 0.22);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.78);
    border: 1px solid rgba(15, 77, 184, 0.15);
    color: var(--brand-deep);
}

.hero-badges,
.football-tags,
.football-emblems {
    display: flex;
    flex-wrap: wrap;
    gap: 0.65rem;
}

.hero-badges span,
.football-tags span {
    display: inline-flex;
    align-items: center;
    min-height: 36px;
    padding: 0 0.9rem;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.72);
    border: 1px solid rgba(15, 77, 184, 0.12);
    color: #24456e;
    font-size: 0.88rem;
    font-weight: 700;
}

.hero-note {
    margin-top: auto;
    padding: 1rem 1.1rem;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, rgba(255, 180, 0, 0.14), rgba(255, 255, 255, 0.62));
    color: #284362;
}

.hero-media {
    display: grid;
    gap: 1rem;
    height: 100%;
    align-content: start;
}

.hero-emblems {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
}

.hero-panel {
    padding: 1.1rem;
}

.panel-topline {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.6rem;
    margin-bottom: 0.8rem;
}

.panel-kicker,
.panel-theme,
.card-label {
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.panel-kicker,
.card-label {
    color: var(--brand);
}

.panel-theme {
    color: #8a6510;
}

.hero-panel h2,
.section-intro h2,
.section-head h2,
.football-copy h2 {
    font-size: clamp(1.7rem, 2.5vw, 2.8rem);
    line-height: 1.16;
    max-width: 18ch;
}

.hero-panel p {
    margin: 0.9rem 0 1rem;
    color: var(--muted);
}

.sponsor-panel img,
.media-card img,
.image-panel img,
.solution-card img {
    width: 100%;
    object-fit: cover;
}

.sponsor-panel img {
    aspect-ratio: 16 / 7;
    border-radius: 18px;
}

.video-panel video {
    width: 100%;
    aspect-ratio: 16 / 9;
    border-radius: 18px;
    background: #081427;
    object-fit: cover;
}

.stats-grid,
.feature-grid,
.solution-grid,
.footer-grid {
    display: grid;
    gap: 1rem;
}

.split-layout {
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
    align-items: center;
}

.media-card {
    overflow: hidden;
    border-radius: 30px;
}

.section-intro,
.section-head,
.football-copy {
    max-width: 760px;
}

.intro-full {
    max-width: 100%;
}

.section-intro p + p,
.football-copy p + p {
    margin-top: 1rem;
}

.section-head {
    margin-bottom: 1.8rem;
}

.section-head p {
    margin-top: 1rem;
    max-width: 760px;
}

.feature-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    margin-bottom: 1.4rem;
}

.feature-card {
    border-radius: var(--radius-lg);
    padding: 1.5rem;
}

.feature-card h3,
.solution-card h3,
.football-card h3 {
    font-size: 1.2rem;
    margin: 0.8rem 0 0.6rem;
}

.insight-card h2 {
    font-size: clamp(1.7rem, 2.5vw, 2.8rem);
    line-height: 1.16;
    letter-spacing: -0.02em;
    margin: 0.2rem 0 0.85rem;
    max-width: 18ch;
}

.icon-badge {
    width: 54px;
    height: 54px;
    border-radius: 18px;
    background:
        linear-gradient(135deg, rgba(255, 180, 0, 0.18), rgba(15, 77, 184, 0.2));
    border: 1px solid rgba(15, 77, 184, 0.12);
    position: relative;
}

.icon-badge::before,
.icon-badge::after {
    content: "";
    position: absolute;
}

.icon-flow::before {
    inset: 18px 10px;
    border-radius: 999px;
    background: linear-gradient(90deg, var(--brand), #68a3ff);
}

.icon-flow::after {
    right: 10px;
    top: 14px;
    border-top: 10px solid transparent;
    border-bottom: 10px solid transparent;
    border-left: 14px solid #68a3ff;
}

.icon-shield::before {
    width: 24px;
    height: 28px;
    left: 15px;
    top: 11px;
    background: linear-gradient(180deg, var(--brand), var(--brand-deep));
    clip-path: polygon(50% 0%, 100% 20%, 100% 62%, 50% 100%, 0% 62%, 0% 20%);
}

.icon-shield::after {
    width: 10px;
    height: 6px;
    left: 22px;
    top: 23px;
    border-left: 3px solid #fff;
    border-bottom: 3px solid #fff;
    transform: rotate(-45deg);
}

.icon-earth::before {
    width: 28px;
    height: 28px;
    left: 13px;
    top: 13px;
    border-radius: 50%;
    border: 3px solid var(--brand);
}

.icon-earth::after {
    inset: 18px 16px;
    border-left: 2px solid var(--brand);
    border-right: 2px solid var(--brand);
    border-radius: 50%;
}

.icon-build::before {
    width: 24px;
    height: 24px;
    left: 15px;
    top: 15px;
    border: 3px solid var(--brand);
    border-top-width: 8px;
    border-radius: 8px;
}

.icon-build::after {
    width: 14px;
    height: 3px;
    right: 10px;
    top: 15px;
    background: var(--accent);
    transform: rotate(-42deg);
    transform-origin: left center;
}

.product-band {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.92fr);
    align-items: stretch;
}

.product-band-single {
    grid-template-columns: 1fr;
}

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

.assurance-card {
    padding: 1.4rem;
    border-radius: 22px;
    background: rgba(255, 255, 255, 0.76);
    border: 1px solid rgba(15, 77, 184, 0.12);
    box-shadow: var(--shadow);
}

.assurance-card h3 {
    font-size: 1.08rem;
    margin-bottom: 0.65rem;
}

.assurance-card p {
    color: var(--muted);
}

.image-panel {
    overflow: hidden;
    border-radius: 30px;
    box-shadow: var(--shadow);
}

.image-panel img {
    min-height: 100%;
}

.point-list {
    margin: 1rem 0 0;
    padding-left: 1.1rem;
    color: var(--muted);
}

.point-list li + li {
    margin-top: 0.7rem;
}

.solution-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.solution-card {
    border-radius: 26px;
    overflow: hidden;
    padding-bottom: 1rem;
    display: flex;
    flex-direction: column;
}

.solution-card img {
    aspect-ratio: 16 / 11;
}

.solution-visual {
    aspect-ratio: 16 / 11;
    display: grid;
    place-items: center;
    background:
        radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.26), transparent 22%),
        linear-gradient(135deg, #0d347e 0%, #1260d1 52%, #64a6ff 100%);
}

.solution-visual span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 0 1rem;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.22);
    color: #fff;
    font-size: 0.95rem;
    font-weight: 700;
    letter-spacing: 0.04em;
}

.solution-card h3 {
    padding-inline: 1.35rem;
    margin-top: 1.1rem;
}

.solution-card p {
    padding-inline: 1.35rem;
    padding-bottom: 1.35rem;
    margin-top: auto;
}

.football-grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
    align-items: start;
}

#football.section {
    padding-top: 5rem;
    padding-bottom: 5rem;
}

.football-grid-media {
    grid-template-columns: minmax(0, 1fr) minmax(320px, 0.78fr);
    align-items: start;
}

.football-grid-media .football-copy {
    max-width: 700px;
}

.football-grid-media .football-copy h2 {
    max-width: 15ch;
    margin-bottom: 1.05rem;
}

.football-grid-media .football-copy p {
    max-width: 39rem;
}

.football-grid-media .football-copy p + p {
    margin-top: 0.9rem;
}

.football-grid-media .football-tags {
    margin-top: 1.35rem;
}

.football-media {
    display: grid;
    gap: 1rem;
    align-self: start;
}

.football-photo {
    margin: 0;
}

.football-photo img {
    width: 100%;
    height: auto;
    object-fit: cover;
}

.football-photo-square img {
    aspect-ratio: 5 / 4;
}

.football-card {
    background:
        linear-gradient(180deg, rgba(15, 77, 184, 0.94), rgba(7, 38, 100, 0.98));
    color: #fff;
}

.football-emblems {
    gap: 1rem;
    margin: 0 0 1.4rem;
}

.emblem-card {
    flex: 1 1 240px;
    margin: 0;
    padding: 1rem;
    border-radius: 22px;
    background: rgba(255, 255, 255, 0.72);
    border: 1px solid rgba(15, 77, 184, 0.12);
    box-shadow: var(--shadow);
}

.emblem-card img {
    width: 100%;
    aspect-ratio: 1 / 1;
    object-fit: contain;
    border-radius: 16px;
    background: #fff;
}

.emblem-card figcaption {
    margin-top: 0.8rem;
    color: #35506f;
    font-size: 0.92rem;
    font-weight: 600;
    text-align: center;
}

.emblem-card-dark {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.12);
}

.emblem-card-dark figcaption {
    color: rgba(255, 255, 255, 0.86);
}

.football-card p {
    color: rgba(255, 255, 255, 0.8);
}

.site-footer {
    padding: 4rem 0 3.5rem;
    background:
        radial-gradient(circle at top, rgba(28, 77, 167, 0.28), transparent 24%),
        linear-gradient(180deg, #081527 0%, #0c1c35 100%);
    color: #eef4ff;
}

.footer-grid {
    grid-template-columns: 1.1fr 0.9fr 1fr;
    align-items: start;
}

.footer-brand p {
    margin-top: 0.8rem;
}

.footer-title {
    margin-bottom: 0.85rem;
    font-size: 0.88rem;
    font-weight: 700;
    color: #9bbcf5;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.footer-grid > div p + p {
    margin-top: 0.55rem;
}

.footer-muted {
    color: rgba(238, 244, 255, 0.68);
}

.reveal {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity 600ms ease, transform 600ms ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

@media (min-width: 1440px) {
    :root {
        --container: min(1320px, calc(100% - 5rem));
    }

    .section {
        padding: 6.2rem 0;
    }

    .hero-grid {
        grid-template-columns: minmax(0, 1.04fr) minmax(420px, 0.96fr);
        gap: 1.8rem;
    }

    .feature-grid,
    .assurance-grid {
        gap: 1.2rem;
    }
}

@media (max-width: 1080px) {
    .feature-grid,
    .solution-grid,
    .assurance-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .hero-grid,
    .split-layout,
    .product-band,
    .football-grid,
    .footer-grid {
        grid-template-columns: 1fr;
    }

    .hero-copy h1,
    .hero-panel h2,
    .section-intro h2,
    .section-head h2,
    .football-copy h2,
    .lead {
        max-width: none;
    }

    .football-grid-media .football-copy,
    .football-grid-media .football-copy p {
        max-width: none;
    }

}

@media (max-width: 820px) {
    .desktop-nav {
        display: none;
    }

    .menu-btn {
        display: inline-flex;
    }

    .hero {
        padding-top: 2rem;
    }

    .section {
        padding: 4.2rem 0;
    }

    .header-inner {
        min-height: 80px;
    }

    .hero-copy,
    .section-intro,
    .insight-card,
    .football-card {
        padding: 1.45rem;
    }

    .hero-panel {
        padding: 0.9rem;
    }

    .site-footer {
        padding: 3.2rem 0 2.8rem;
    }

    #football.section {
        padding-top: 4.1rem;
        padding-bottom: 4.1rem;
    }
}

@media (max-width: 640px) {
    .container {
        width: min(100% - 1.1rem, 100%);
    }

    .feature-grid,
    .solution-grid,
    .assurance-grid,
    .hero-emblems {
        grid-template-columns: 1fr;
    }

    .panel-topline {
        flex-direction: column;
        align-items: flex-start;
    }

    .hero-copy h1 {
        font-size: clamp(1.95rem, 9vw, 2.35rem);
        line-height: 1.12;
    }

    .hero-panel h2,
    .section-intro h2,
    .section-head h2,
    .football-copy h2 {
        font-size: clamp(1.45rem, 6.6vw, 2rem);
    }

    .lead,
    .section-head p,
    .section-intro p,
    .feature-card p,
    .solution-card p,
    .football-copy p {
        font-size: 0.98rem;
    }

    .hero-actions {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .hero-badges span,
    .football-tags span {
        min-height: 34px;
        padding: 0 0.78rem;
        font-size: 0.8rem;
    }

    .feature-card,
    .assurance-card,
    .solution-card {
        border-radius: 20px;
    }

    .solution-card h3,
    .solution-card p {
        padding-inline: 1rem;
    }
}

@media (max-width: 420px) {
    :root {
        --radius-xl: 22px;
        --radius-lg: 18px;
        --radius-md: 14px;
    }

    .brand img,
    .footer-brand img {
        width: 146px;
    }

    .header-inner {
        min-height: 74px;
    }

    .menu-btn {
        width: 40px;
        height: 40px;
    }

    .section {
        padding: 3.6rem 0;
    }

    .hero-copy,
    .section-intro,
    .insight-card,
    .football-card {
        padding: 1.15rem;
    }

    .hero-note {
        padding: 0.9rem 0.95rem;
    }

    .footer-grid > div p + p {
        margin-top: 0.45rem;
    }
}

@media (max-width: 360px) {
    .container {
        width: min(100% - 0.9rem, 100%);
    }

    .hero-copy h1 {
        font-size: 1.8rem;
    }

    .eyebrow {
        font-size: 0.74rem;
        letter-spacing: 0.08em;
    }

    .brand img,
    .footer-brand img {
        width: 138px;
    }
}