/* 全局变量与页面基础样式 */
:root {
    --container-width: 1400px;
    --breakout-width: 1680px;
    --page-gutter: clamp(24px, 4vw, 40px);
    --page-bg: #FFF;
    --surface: #ffffff;
    --surface-muted: #eef3ff;
    --surface-soft: #f3f6fd;
    --ink-strong: #111827;
    --ink-base: #4B5563;
    --ink-soft: #4B5563;
    --line-soft: rgba(14, 36, 78, 0.08);
    --line-strong: rgba(117, 168, 255, 0.42);
    --brand: #0052FF;
    --brand-2: #11d6ff;
    --hero-start: #1a2757;
    --hero-end: #071121;
    --hero-panel: #0b1327;
    --footer-bg: #050B14;
    --footer-line: rgba(255, 255, 255, 0.08);
    --shadow-lg: 0 22px 48px rgba(17, 28, 61, 0.14);
    --shadow-md: 0 12px 26px rgba(17, 28, 61, 0.12);
    --radius-xl: 30px;
    --radius-lg: 24px;
    --radius-md: 18px;
    --radius-sm: 14px;
    --transition-fast: 180ms ease;
    --site-header-height: 97px;
}

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
    overflow-x: clip;
}

body {
    min-width: 320px;
    overflow-x: hidden;
    overflow-x: clip;
    font-family: "Inter", "Segoe UI", "Helvetica Neue", sans-serif;
    color: var(--ink-strong);
    background: var(--page-bg);
}

body.menu-open {
    overflow: hidden;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

img {
    max-width: 100%;
    height: auto;
}

button,
input,
textarea,
select {
    font: inherit;
}

select {
    appearance: none;
}

.site-shell {
    overflow: clip;
}

.container {
    width: min(var(--container-width), calc(100% - (var(--page-gutter) * 2)));
    margin: 0 auto;
}

.section-space {
    padding: 58px 0;
}

.section-heading {
    margin-bottom: 56px;
}

.section-heading--center {
    text-align: center;
}

.section-heading--inverse {
    color: #ffffff;
    font-size: 30px !important;
}

.section-heading__title {
    font-size: clamp(2rem, 4vw, 2.25rem);
    line-height: 1.06;
    letter-spacing: -0.04em;
    text-transform: uppercase;
}

.section-heading__title--sm {
    font-size: clamp(1.7rem, 2vw, 2.15rem);
    text-transform: none;
    letter-spacing: -0.03em;
    color: #1F2937;
}

.section-heading__description {
    margin-top: 14px;
    color: var(--ink-base);
    font-size: 1rem;
}
.heading_item {
    font-size: 1.875rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    min-height: 54px;
    padding: 0 28px;
    border: 1px solid transparent;
    border-radius: 4px;
    font-weight: 600;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
}

.btn:hover {
    transform: translateY(-2px);
}

.btn-primary {
    color: #D1D5DB;
    background: #0052FF;
    box-shadow: 0 12px 28px rgba(26, 92, 255, 0.28);
}

.btn-outline {
    color: #D1D5DB;
    border: 1px solid rgba(255, 255, 255, 0.30);
}

.btn-block {
    width: 100%;
}

/* 首屏区域 */
.hero-section {
    position: relative;
    padding-bottom: 84px;
    color: #ffffff;
    background:
        radial-gradient(circle at 82% 32%, rgba(24, 214, 255, 0.16), transparent 18%),
        radial-gradient(circle at 70% 44%, rgba(32, 96, 255, 0.24), transparent 34%),
        radial-gradient(90.66% 119.88% at 50% 0%, #1A2A5E 0%, #0B1120 70%);
}

.hero-section::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
    background-size: 140px 140px;
    opacity: 0.12;
    pointer-events: none;
}

.site-header {
    position: fixed;
    z-index: 30;
    top: 0;
    left: 50%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    padding: 24px 0 18px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
    transform: translateX(-50%);
    transition: transform 260ms ease, border-color var(--transition-fast);
    will-change: transform;
}

.site-header::before {
    content: "";
    position: absolute;
    z-index: -1;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 100vw;
    opacity: 0;
    background: rgba(7, 17, 33, 0.9);
    box-shadow: 0 10px 28px rgba(0, 0, 0, 0.16);
    backdrop-filter: blur(14px);
    transform: translateX(-50%);
    transition: opacity var(--transition-fast);
}

.site-header.is-scrolled::before,
body.menu-open .site-header::before {
    opacity: 1;
}

.site-header.is-scrolled {
    border-bottom-color: rgba(255, 255, 255, 0.08);
}

.site-header.is-hidden {
    transform: translate(-50%, calc(-100% - 8px));
}

body.menu-open .site-header.is-hidden {
    transform: translateX(-50%);
}

.hero-section,
.news-hero-section,
.about-hero-section {
    padding-top: var(--site-header-height);
}

.brand-mark {
    display: inline-flex;
    align-items: baseline;
    gap: 6px;
    font-size: clamp(1.4rem, 1.8vw, 1.5rem);
    font-weight: 800;
    letter-spacing: -0.06em;
    font-style: italic;
    text-transform: uppercase;
    white-space: nowrap;
}

.brand-mark__accent {
    color: var(--brand);
}

.site-nav {
    margin-left: auto;
}

.nav-list,
.mobile-nav__list {
    display: flex;
    align-items: center;
    gap: clamp(22px, 2vw, 44px);
}

.nav-link {
    color: rgba(255, 255, 255, 0.78);
    font-size: 1rem;
    font-weight: 500;
    transition: color var(--transition-fast);
}

.nav-link:hover {
    color: #ffffff;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.header-submenu {
    position: relative;
}

.header-submenu::after {
    content: "";
    position: absolute;
    top: 100%;
    right: 0;
    width: max(100%, 176px);
    height: 10px;
}

.header-submenu__toggle {
    gap: 8px;
    background: transparent;
}

.header-submenu__toggle svg,
.mobile-submenu__toggle svg {
    width: 16px;
    height: 16px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
    transition: transform var(--transition-fast);
}

.header-submenu__menu {
    position: absolute;
    z-index: 10;
    top: calc(100% + 10px);
    right: 0;
    min-width: 176px;
    padding: 8px;
    visibility: hidden;
    opacity: 0;
    transform: translateY(-8px);
    background: rgba(7, 17, 33, 0.98);
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: 10px;
    box-shadow: 0 16px 34px rgba(0, 0, 0, 0.28);
    pointer-events: none;
    transition: opacity var(--transition-fast), transform var(--transition-fast), visibility 0s linear 180ms;
}

.header-submenu.is-open .header-submenu__menu {
    visibility: visible;
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
    transition-delay: 0s;
}

.header-submenu.is-open .header-submenu__toggle svg,
.mobile-submenu.is-open .mobile-submenu__toggle svg {
    transform: rotate(180deg);
}

.header-submenu__menu a {
    display: flex;
    align-items: center;
    min-height: 42px;
    padding: 0 14px;
    color: rgba(255, 255, 255, 0.76);
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: 7px;
    transition: color var(--transition-fast), background var(--transition-fast);
}

.header-submenu__menu a:hover,
.header-submenu__menu a:focus-visible,
.header-submenu__menu a.is-current {
    color: #ffffff;
    background: rgba(0, 82, 255, 0.28);
    outline: none;
}

.mobile-submenu {
    display: grid;
}

.mobile-submenu__toggle {
    justify-content: space-between;
    background: transparent;
}

.mobile-submenu__menu {
    display: grid;
    gap: 4px;
    max-height: 0;
    margin-top: 0;
    padding: 0 8px;
    overflow: hidden;
    visibility: hidden;
    opacity: 0;
    transition: max-height 220ms ease, margin-top 220ms ease, padding 220ms ease, opacity var(--transition-fast), visibility 0s linear 220ms;
}

.mobile-submenu.is-open .mobile-submenu__menu {
    max-height: 120px;
    margin-top: 8px;
    padding-top: 6px;
    padding-bottom: 6px;
    visibility: visible;
    opacity: 1;
    transition-delay: 0s;
}

.mobile-submenu__menu a {
    display: flex;
    align-items: center;
    min-height: 42px;
    padding: 0 14px;
    color: rgba(255, 255, 255, 0.76);
    font-size: 0.875rem;
    border-radius: 8px;
}

.mobile-submenu__menu a:hover,
.mobile-submenu__menu a:focus-visible,
.mobile-submenu__menu a.is-current {
    color: #ffffff;
    background: rgba(0, 82, 255, 0.24);
    outline: none;
}

.nav-toggle {
    display: none;
    width: 52px;
    height: 52px;
    padding: 0;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: 16px;
}

.nav-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    margin: 4px auto;
    background: #ffffff;
    border-radius: 999px;
    transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.mobile-menu {
    display: none;
}

.hero-content {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    align-items: start;
    gap: 38px;
    padding: 30px 0 0;
}

.hero-copy {
    padding-top: 84px;
}

.hero-copy__eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 18px;
    color: rgba(255, 255, 255, 0.7);
    text-transform: uppercase;
    letter-spacing: 0.18em;
    font-size: 0.82rem;
}

.hero-copy__eyebrow::before {
    content: "";
    width: 42px;
    height: 1px;
    background: linear-gradient(90deg, var(--brand-2), rgba(17, 214, 255, 0));
}

.hero-copy__title {
    max-width: 520px;
    font-size: 3.75rem;
    font-weight: 700;
    line-height: 1.02;
    letter-spacing: -0.04em;
    text-transform: uppercase;
}

.hero-copy__description {
    max-width: 560px;
    margin-top: 24px;
    color: #9CA3AF;
    font-size: 1.125rem;
    font-weight: 400;
    line-height: 1.75;
}

.hero-copy__button {
    margin-top: 42px;
}

.hero-visual {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    min-height: 620px;
}

.hero-visual__halo {
    position: absolute;
    right: 42px;
    width: 460px;
    height: 460px;
    background: radial-gradient(circle, rgba(17, 214, 255, 0.32) 0%, rgba(17, 214, 255, 0.08) 40%, transparent 72%);
    filter: blur(14px);
}

.hero-visual img {
    position: relative;
    z-index: 1;
    width: min(690px, 100%);
    object-fit: contain;
    filter: drop-shadow(0 30px 60px rgba(11, 34, 81, 0.35));
}

.hero-stats-wrap {
    position: relative;
    z-index: 3;
    margin-top: 34px;
    margin-bottom: -152px;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    min-height: 216px;
    background: #ffffff;
    color: var(--ink-strong);
    border-radius: 16px;
    box-shadow: 0 18px 34px rgba(15, 23, 42, 0.14);
    overflow: hidden;
}

.metric-card {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-evenly;
    padding: 34px 18px 30px;
    text-align: center;
}

.metric-card:not(:last-child)::after {
    content: "";
    position: absolute;
    top: 50%;
    right: 0;
    width: 1px;
    height: 110px;
    background: #E5E7EB;
    transform: translateY(-50%);
}

.metric-card__icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    background: transparent;
}

.metric-card__icon img {
    width: 32px;
    height: 32px;
}

.metric-card__value {
    color: #111827;
    font-size: 1.8rem;
    line-height: 1.18;
    font-weight: 700;
    letter-spacing: 0;
}

.metric-card__label {
    max-width: 220px;
    margin-top: 4px;
    color: #6B7280;
    font-size: .9rem;
    line-height: 1.35;
    font-weight: 500;
}

/* 品牌轮播 */
.brands-section {
    padding-top: 183px;
}

.brands-breakout {
    width: 100vw;
    margin-left: calc(50% - 50vw);
    overflow: hidden;
}

.brand-marquee {
    --brand-gap: 80px;
    overflow: hidden;
    padding: 8px 0 22px;
}

.brand-marquee__track {
    display: flex;
    align-items: center;
    width: max-content;
    animation: brandMarquee 28s linear infinite;
}

.brand-marquee__group {
    display: flex;
    align-items: center;
    gap: var(--brand-gap);
    padding-right: var(--brand-gap);
}

@keyframes brandMarquee {
    from {
        transform: translateX(0);
    }

    to {
        transform: translateX(-50%);
    }
}

.brand-card {
    display: flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
    width: 180px;
    height: 110px;
}

.brand-card img {
    /* max-width: 150px;
    max-height: 64px; */
    width: 100%;
    height: 100%;
    object-fit: contain;
}

/* 案例轮播 */
.case-swiper {
    overflow: hidden;
}

.case-swiper .swiper-slide {
    width: 100%;
}

.case-card {
    display: grid;
    grid-template-columns: minmax(0, 440px) minmax(0, 1fr);
    align-items: stretch;
    gap: 42px;
    height: 538px;
    padding: 52px 80px 18px 84px;
    background: #F3F6FE;
    border: 1px solid #F3F4F6;
    border-radius: 24px;
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
}

.case-card__content {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.case-card__eyebrow {
    color: var(--brand);
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.case-card__intro {
    display: flex;
    align-items: center;
    gap: 18px;
    margin-top: 28px;
}

.case-card__brand {
    display: flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
    width: 112px;
    height: 112px;
    margin: 0;
    overflow: hidden;
    border-radius: 20px;
    background: transparent;
    box-shadow: none;
}

.case-card__brand--text {
    background: linear-gradient(135deg, #ff8e3c 0%, #ff5a19 100%);
    color: #ffffff;
    font-size: 1.18rem;
    font-weight: 800;
    letter-spacing: -0.04em;
    text-transform: lowercase;
}

.case-card__brand--blue {
    background: linear-gradient(135deg, #1e68ff 0%, #123ea8 100%);
}

.case-card__brand--text,
.case-card__brand--blue {
    color: #ffffff;
    font-size: 1.18rem;
    font-weight: 800;
    letter-spacing: -0.04em;
}

.case-card__brand img {
    width: 100%;
    height: 100%;
    max-width: none;
    max-height: none;
    object-fit: contain;
}

.case-card__headline {
    min-width: 0;
}

.case-card__title {
    max-width: 350px;
    color: #111827;
    font-size: 2.25rem;
    line-height: 1.22;
    font-weight: 700;
    letter-spacing: 0;
}

.case-card__subtitle {
    margin-top: 16px;
    color: #4B5563;
    font-size: 1rem;
    line-height: 1.5;
    font-weight: 400;
}

.case-card__description {
    max-width: 430px;
    margin-top: 28px;
    color: #4B5563;
    font-size: 1rem;
    line-height: 1.55;
    font-weight: 400;
}

.case-card__stats {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin-top: 48px;
}

.case-card__stat {
    width: 206px;
    height: 90px;
    padding: 18px 20px;
    background: #ffffff;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(15, 23, 42, 0.22);
}

.case-card__stat strong {
    display: block;
    color: var(--brand);
    font-size: 1.5rem;
    line-height: 1;
    font-weight: 700;
    letter-spacing: 0;
}

.case-card__stat span {
    display: block;
    margin-top: 8px;
    color: #4B5563;
    font-size: 0.75rem;
    line-height: 1.2;
}

.case-card__media {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    min-width: 0;
}

.case-card__media img {
    width: min(560px, 100%);
    height: 500px;
    object-fit: contain;
    filter: drop-shadow(0 28px 30px rgba(26, 45, 77, 0.2));
}

/* 解决方案 */
.solution-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px;
}

.solution-card {
    min-height: 356px;
    padding: 40px;
    background: var(--surface-soft);
    border-radius: 26px;
}

.solution-card__icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    border-radius: 18px;
    background: #dbe8ff;
}

.solution-card__icon img {
    width: 100%;
    height: 100%;
}

.solution-card__title {
    margin-top: 26px;
    font-size: clamp(1.4rem, 2vw, 2rem);
    line-height: 1.05;
    letter-spacing: -0.04em;
    text-transform: uppercase;
}

.solution-card__description {
    margin-top: 18px;
    padding-bottom: 80px;
    color: var(--ink-base);
    font-size: 1rem;
    line-height: 1.82;
}

/* 深色优势区 */
.benefits-section {
    padding: 96px 24px;
    color: #ffffff;
    background:
        radial-gradient(circle at 50% 0%, rgba(32, 90, 255, 0.18), transparent 32%),
        linear-gradient(180deg, #0f1c44 0%, #080f22 100%);
}

.benefit-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0;
    padding-top: 15px;
}

.benefit-card {
    padding: 16px 26px 0;
    text-align: center;
    border-right: 1px solid rgba(255, 255, 255, 0.14);
}

.benefit-card:last-child {
    border-right: 0;
}

.benefit-card__icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 18px;
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.04);
}

.benefit-card__icon img {
    width: 48px;
    height: 48px;
}

.benefit-card__title {
    font-size: 1.25rem;
    line-height: 1.15;
    letter-spacing: -0.04em;
}

.benefit-card__description {
    margin-top: 14px;
    color: #9CA3AF;
    font-size: 0.875rem;
    line-height: 1.68;
}

/* 资源区 */
.resource-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 20px;
}

.resource-card {
    overflow: hidden;
    background: #ffffff;
    border: 1px solid rgba(13, 32, 71, 0.08);
    border-radius: 18px;
    box-shadow: 0 10px 24px rgba(17, 28, 61, 0.06);
}

.resource-card__image {
    aspect-ratio: 16 / 10;
    overflow: hidden;
}

.resource-card__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.resource-card__body {
    padding: 20px 18px 22px;
}

.resource-card__type {
    color: var(--brand);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.resource-card__title {
    margin-top: 10px;
    font-size: 1.125rem;
    line-height: 1.24;
    letter-spacing: -0.04em;
}

.resource-card__meta {
    display: block;
    margin-top: 12px;
    color: var(--ink-soft);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.resource-card__link {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-top: 18px;
    color: var(--brand);
    font-weight: 600;
    font-size: 14px;
}

.resource-card__link::after {
    content: "——>";
    font-size: 1rem;
}

/* 联系区域 */
.cta-section {
    background: radial-gradient(147.54% 68% at 50% 0%, #1A2A5E 0%, #0B1120 70%);
}

.cta-layout {
    display: grid;
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
    align-items: center;
    gap: 56px;
    padding: 76px 0;
}

.cta-copy__title {
    max-width: 440px;
    color: #ffffff;
    font-size: clamp(2.6rem, 4vw, 3rem);
    line-height: 1.05;
    letter-spacing: -0.05em;
}

.cta-copy__description {
    max-width: 420px;
    margin-top: 26px;
    color: #DBEAFE;
    font-size: 1.125rem;
    line-height: 1.72;
    font-weight: 400;
}

.cta-contact-item {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: #DBEAFE;
    font-size: 0.9375rem;
    line-height: 1.5;
    font-style: normal;
}

.cta-contact-item i {
    color: #4F8CFF;
    font-size: 20px;
}
.cta-contact-item span {
    color: #DBEAFE;
}

.cta-contact-item--address {
    margin-top: 28px;
}

.cta-contact-item--email {
    display: flex;
    justify-content: center;
    width: fit-content;
    margin: 16px auto 0;
    color: #BFDBFE;
    transition: color 180ms ease;
}

.cta-contact-item--email:hover,
.cta-contact-item--email:focus-visible {
    color: #ffffff;
}

.cta-contact-item--email:focus-visible {
    border-radius: 4px;
    outline: 2px solid rgba(96, 165, 250, 0.9);
    outline-offset: 4px;
}

.contact-form {
    width: min(100%, 608px);
    padding: 27px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.10);
    border-radius: 12px;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
    backdrop-filter: blur(10px);
}

.contact-form__grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.contact-form .field-control {
    width: 100%;
    height: 42px;
    min-height: 42px;
    padding: 0 12px;
    color: #ffffff;
    background: rgba(15, 23, 42, 0.62);
    border: 1px solid rgba(156, 163, 175, 0.42);
    border-radius: 4px;
    font-size: 0.875rem;
    font-weight: 400;
}

.contact-form .field-control::placeholder {
    color: #9CA3AF;
    opacity: 1;
}

.contact-form select.field-control {
    color: #9CA3AF;
}

.contact-form select.field-control option {
    color: #111827;
}

.contact-form .field-control:focus {
    color: #ffffff;
    border-color: rgba(156, 163, 175, 0.66);
    outline: none;
}

.contact-form .field-control.is-invalid {
    border-color: #EF4444;
}

.contact-form .field-control--textarea {
    display: block;
    height: 106px;
    min-height: 106px;
    padding: 12px;
    margin: 14px 0;
    line-height: 1.5;
}

.contact-form .btn {
    min-height: 46px;
    border-radius: 4px;
    color: #ffffff;
    font-size: 0.875rem;
    font-weight: 700;
    box-shadow: none;
}

.contact-form__message {
    min-height: 20px;
    margin-top: 12px;
    color: #9CA3AF;
    font-size: 0.875rem;
    line-height: 1.4;
    text-align: center;
}

.contact-form__message:empty {
    display: none;
}

.contact-form__message.is-error {
    color: #FCA5A5;
}

.contact-form__message.is-success {
    color: #86EFAC;
}

.contact-form.is-submitting .btn {
    opacity: 0.78;
    pointer-events: none;
}

/* 页脚 */
.site-footer {
    color: #ffffff;
    background: var(--footer-bg);
}

.footer-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) 0.7fr 0.7fr;
    gap: 56px;
    padding: 58px 0 42px;
}

.brand-mark--footer {
    font-size: clamp(1.2rem, 1.5vw, 1.8rem);
}

.footer-brand__text {
    max-width: 320px;
    margin-top: 26px;
    color: #9CA3AF;
    line-height: 1.75;
    font-size: 0.875rem;
}

.social-links {
    display: flex;
    gap: 12px;
    margin-top: 24px;
}

.social-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    color: rgba(255, 255, 255, 0.74);
    background: rgba(255, 255, 255, 0.06);
    border-radius: 10px;
    transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
}

.social-link:hover {
    color: #ffffff;
    background: rgba(26, 92, 255, 0.32);
    transform: translateY(-2px);
}

.social-link svg {
    width: 18px;
    height: 18px;
    fill: currentColor;
}

.footer-column__title {
    margin-bottom: 18px;
    font-size: 1.16rem;
}

.footer-links {
    display: grid;
    gap: 12px;
}

.footer-links a {
    color: #9CA3AF;
    font-size: 0.875rem;
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: #ffffff;
}

.footer-bottom {
    padding: 24px 0 36px;
    border-top: 1px solid var(--footer-line);
    color: #6B7280;
    font-size: 0.75rem;
}

/* 响应式处理 */
@media (max-width: 1180px) {
    .hero-content,
    .case-card,
    .cta-layout {
        grid-template-columns: 1fr;
    }

    .hero-visual,
    .case-card__media {
        justify-content: center;
    }

    .hero-visual {
        min-height: auto;
    }

    .hero-copy {
        padding-top: 24px;
    }

    .case-card {
        height: auto;
        min-height: auto;
        padding: 42px;
    }

    .case-card__media img {
        height: 440px;
    }

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

@media (max-width: 960px) {
    .section-space {
        padding: 72px 0;
    }

    .hero-section {
        padding-bottom: 72px;
    }

    .site-nav,
    .header-submenu,
    .header-actions > .btn {
        display: none;
    }

    .nav-toggle,
    .mobile-menu {
        display: block;
    }

    .mobile-menu {
        position: fixed;
        z-index: 29;
        top: var(--site-header-height);
        left: 50%;
        max-height: 0;
        overflow: hidden;
        transform: translateX(-50%);
        transition: max-height 220ms ease;
    }

    body.menu-open .mobile-menu {
        max-height: 520px;
    }

    .mobile-nav {
        margin-top: 16px;
        padding: 18px;
        background: rgba(7, 17, 33, 0.96);
        border: 1px solid rgba(255, 255, 255, 0.12);
        border-radius: 20px;
        backdrop-filter: blur(14px);
    }

    .mobile-nav__list {
        flex-direction: column;
        align-items: flex-start;
        gap: 18px;
    }

    .mobile-nav__actions {
        display: grid;
        gap: 12px;
        margin-top: 20px;
    }

    body.menu-open .nav-toggle span:nth-child(1) {
        transform: translateY(6px) rotate(45deg);
    }

    body.menu-open .nav-toggle span:nth-child(2) {
        opacity: 0;
    }

    body.menu-open .nav-toggle span:nth-child(3) {
        transform: translateY(-6px) rotate(-45deg);
    }

    .hero-content {
        padding-top: 24px;
    }

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

    .metric-card:nth-child(2n) {
        border-right: 0;
    }

    .metric-card:nth-child(2n)::after {
        display: none;
    }

    .metric-card:last-child {
        grid-column: 1 / -1;
    }

    .brands-section {
        padding-top: 250px;
    }

    .solution-grid,
    .benefit-grid,
    .footer-grid {
        grid-template-columns: 1fr;
    }

    .benefit-card {
        padding: 20px 0;
        border-right: 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.14);
    }

    .benefit-card:last-child {
        border-bottom: 0;
    }
}

@media (max-width: 640px) {
    :root {
        --page-gutter: 16px;
        --site-header-height: 74px;
    }

    .container {
        width: min(var(--container-width), calc(100% - (var(--page-gutter) * 2)));
    }

    .section-space {
        padding: 0;
    }

    .section-heading {
        margin-bottom: 28px;
    }

    .section-heading__title,
    .section-heading__title--sm {
        font-size: 1.5rem;
        line-height: 1.22;
        letter-spacing: 0;
    }

    .site-header {
        padding: 16px 0 14px;
    }

    .brand-mark {
        font-size: 1rem;
        letter-spacing: 0;
    }

    .nav-toggle {
        width: 44px;
        height: 44px;
        border-radius: 10px;
    }

    .hero-section {
        padding-bottom: 48px;
    }

    .hero-content {
        gap: 24px;
        padding-top: 20px;
    }

    .hero-copy {
        padding-top: 8px;
    }

    .hero-copy__eyebrow {
        margin-bottom: 12px;
        font-size: 0.6875rem;
        letter-spacing: 0.08em;
    }

    .hero-copy__eyebrow::before {
        width: 24px;
    }

    .hero-copy__title {
        max-width: 320px;
        font-size: 2.25rem;
        line-height: 1.08;
        letter-spacing: 0;
    }

    .hero-copy__description,
    .cta-copy__description {
        font-size: 0.9375rem;
        line-height: 1.65;
    }

    .hero-copy__description {
        margin-top: 18px;
    }

    .hero-copy__button {
        min-height: 46px;
        margin-top: 28px;
        padding: 0 20px;
        font-size: 0.875rem;
    }

    .hero-visual {
        margin-top: 6px;
    }

    .hero-visual__halo {
        right: auto;
        width: 260px;
        height: 260px;
    }

    .hero-visual img {
        width: min(360px, 100%);
    }

    .hero-stats-wrap {
        margin-top: 28px;
        margin-bottom: -128px;
    }

    .hero-stats {
        grid-template-columns: 1fr;
        grid-auto-rows: auto;
        min-height: 0;
        border-radius: 14px;
    }

    .metric-card,
    .metric-card:nth-child(2n) {
        min-height: 116px;
        gap: 6px;
        justify-content: center;
        padding: 14px 16px;
        border-bottom: 1px solid rgba(12, 32, 71, 0.08);
    }

    .metric-card::after {
        display: none;
    }

    .metric-card:last-child {
        border-bottom: 0;
    }

    .metric-card__icon {
        width: 28px;
        height: 28px;
        margin-bottom: 0;
    }

    .metric-card__icon img {
        width: 26px;
        height: 26px;
    }

    .metric-card__value {
        font-size: 1.625rem;
    }

    .metric-card__label {
        max-width: 260px;
        margin-top: 0;
        font-size: 0.875rem;
        line-height: 1.35;
    }

    .brands-section {
        padding-top: 108px;
    }

    .brand-card {
        width: 136px;
        height: 78px;
        padding: 12px 14px;
        border-radius: 16px;
    }

    .brand-marquee {
        --brand-gap: 26px;
        padding-bottom: 12px;
        margin-top: 30px;
    }

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

    .case-card {
        gap: 22px;
        padding: 28px 18px 22px;
        border-radius: 18px;
    }

    .case-card__intro {
        align-items: flex-start;
        gap: 12px;
        margin-top: 18px;
    }

    .case-card__brand {
        width: 64px;
        height: 64px;
        border-radius: 12px;
    }

    .case-card__title {
        max-width: none;
        font-size: 1.25rem;
        line-height: 1.18;
    }

    .case-card__subtitle {
        margin-top: 8px;
        font-size: 0.8125rem;
        line-height: 1.45;
    }

    .case-card__description {
        margin-top: 18px;
        font-size: 0.875rem;
        line-height: 1.55;
    }

    .case-card__stats {
        /* display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 12px;
        width: 100%;
        margin-top: 22px; */
        display: none;
    }

    .case-card__stat {
        width: 100%;
        height: 76px;
        min-width: 0;
        padding: 14px 12px;
    }

    .case-card__stat strong {
        font-size: 1.25rem;
    }

    .case-card__stat span {
        font-size: 0.6875rem;
    }

    .case-card__media img {
        height: 280px;
        width: 100%;
    }

    .solution-card {
        min-height: auto;
        padding: 24px 20px;
        border-radius: 16px;
    }

    .solution-card__title {
        margin-top: 20px;
        font-size: 1.25rem;
        line-height: 1.2;
        letter-spacing: 0;
    }

    .solution-card__description {
        font-size: 0.875rem;
        line-height: 1.65;
    }

    .resource-grid,
    .contact-form__grid {
        grid-template-columns: 1fr;
    }

    .resource-card__title {
        font-size: 1rem;
        line-height: 1.35;
        letter-spacing: 0;
    }

    .cta-layout {
        gap: 34px;
        padding: 46px 0;
    }

    .cta-copy__title {
        max-width: 300px;
        font-size: 2rem;
        line-height: 1.08;
        letter-spacing: 0;
    }

    .cta-contact-item {
        font-size: 0.875rem;
    }

    .cta-contact-item--address {
        margin-top: 20px;
    }

    .cta-contact-item--email {
        margin-top: 14px;
    }

    .contact-form {
        padding: 18px;
        border-radius: 10px;
    }

    .contact-form .field-control {
        height: 44px;
        min-height: 44px;
        font-size: 0.875rem;
    }

    .contact-form .field-control--textarea {
        height: 104px;
        min-height: 104px;
    }

    .footer-grid {
        gap: 34px;
        padding: 42px 0 30px;
    }

}

@media (max-width: 390px) {
    .case-card__stats {
        display: none;
        /* grid-template-columns: 1fr; */
    }

    .case-card__media img {
        height: 240px;
    }
}

/* Progressive motion system: visual-only effects that do not affect layout. */
.scroll-progress {
    position: fixed;
    z-index: 40;
    top: 0;
    right: 0;
    left: 0;
    height: 2px;
    opacity: 0;
    background: linear-gradient(90deg, #0052ff 0%, #11d6ff 70%, #ffffff 100%);
    box-shadow: 0 0 12px rgba(17, 214, 255, 0.55);
    transform: scaleX(0);
    transform-origin: left center;
    pointer-events: none;
    transition: opacity 180ms ease;
}

.scroll-progress.is-active {
    opacity: 1;
}

html.motion-ready .scroll-reveal {
    --reveal-x: 0px;
    --reveal-y: 72px;
    --reveal-scale: 0.94;
    --reveal-rotate: 0deg;
    --hover-y: 0px;
    opacity: 0;
    transform:
        translate3d(var(--reveal-x), calc(var(--reveal-y) + var(--hover-y)), 0)
        scale(var(--reveal-scale))
        rotate(var(--reveal-rotate));
    transition:
        opacity 720ms cubic-bezier(0.22, 1, 0.36, 1) var(--reveal-delay, 0ms),
        transform 940ms cubic-bezier(0.34, 1.42, 0.64, 1) var(--reveal-delay, 0ms),
        box-shadow 260ms ease;
    will-change: opacity, transform;
}

html.motion-ready .scroll-reveal.reveal--left {
    --reveal-x: -96px;
    --reveal-y: 12px;
    --reveal-scale: 0.96;
    --reveal-rotate: -1.4deg;
}

html.motion-ready .scroll-reveal.reveal--right {
    --reveal-x: 96px;
    --reveal-y: 12px;
    --reveal-scale: 0.96;
    --reveal-rotate: 1.4deg;
}

html.motion-ready .scroll-reveal.reveal--pop {
    --reveal-y: 52px;
    --reveal-scale: 0.76;
}

html.motion-ready .scroll-reveal.reveal--rise {
    --reveal-y: 92px;
    --reveal-scale: 0.91;
}

html.motion-ready .scroll-reveal.is-visible {
    --reveal-x: 0px;
    --reveal-y: 0px;
    --reveal-scale: 1;
    --reveal-rotate: 0deg;
    opacity: 1;
}

html.motion-ready .hero-enter {
    --hero-x: 0px;
    --hero-y: 34px;
    --hero-scale: 0.94;
    opacity: 0;
    transform: translate3d(var(--hero-x), var(--hero-y), 0) scale(var(--hero-scale));
    transition:
        opacity 820ms cubic-bezier(0.22, 1, 0.36, 1) var(--hero-delay, 0ms),
        transform 1120ms cubic-bezier(0.34, 1.4, 0.64, 1) var(--hero-delay, 0ms);
    will-change: opacity, transform;
}

html.motion-ready .hero-enter--left {
    --hero-x: -110px;
    --hero-y: 18px;
    --hero-scale: 0.96;
}

html.motion-ready .hero-enter--right {
    --hero-x: 120px;
    --hero-y: 24px;
    --hero-scale: 0.86;
}

html.motion-ready .hero-enter--drop {
    --hero-y: -58px;
    --hero-scale: 0.9;
}

html.motion-ready .hero-enter--map {
    --hero-y: 105px;
    --hero-scale: 0.86;
}

html.motion-ready .hero-enter.is-visible,
html.motion-ready .hero-enter--left.is-visible,
html.motion-ready .hero-enter--right.is-visible,
html.motion-ready .hero-enter--drop.is-visible,
html.motion-ready .hero-enter--map.is-visible {
    --hero-x: 0px;
    --hero-y: 0px;
    --hero-scale: 1;
    opacity: 1;
}

.metric-card__value {
    font-variant-numeric: tabular-nums;
}

.resource-card,
.solution-card,
.about-card,
.job-item {
    transition: transform 260ms ease, box-shadow 260ms ease;
}

@media (hover: hover) and (pointer: fine) {
    .resource-card:hover,
    .solution-card:hover,
    .about-card:hover,
    .job-item:hover {
        transform: translateY(-8px) scale(1.008);
        box-shadow: 0 24px 48px rgba(17, 28, 61, 0.16);
    }

    html.motion-ready .scroll-reveal.is-visible.resource-card:hover,
    html.motion-ready .scroll-reveal.is-visible.solution-card:hover,
    html.motion-ready .scroll-reveal.is-visible.about-card:hover,
    html.motion-ready .scroll-reveal.is-visible.job-item:hover {
        --hover-y: -8px;
    }
}

@media (max-width: 960px) {
    html.motion-ready .scroll-reveal.reveal--left,
    html.motion-ready .scroll-reveal.reveal--right {
        --reveal-x: 0px;
        --reveal-y: 34px;
        --reveal-scale: 0.96;
        --reveal-rotate: 0deg;
    }

    html.motion-ready .scroll-reveal.reveal--pop {
        --reveal-x: 0px;
        --reveal-y: 28px;
        --reveal-scale: 0.9;
        --reveal-rotate: 0deg;
    }

    html.motion-ready .scroll-reveal.reveal--rise {
        --reveal-x: 0px;
        --reveal-y: 46px;
        --reveal-scale: 0.96;
        --reveal-rotate: 0deg;
    }

    html.motion-ready .hero-enter--left,
    html.motion-ready .hero-enter--right {
        --hero-x: 0px;
        --hero-y: 30px;
        --hero-scale: 0.96;
    }

    html.motion-ready .hero-enter--drop {
        --hero-x: 0px;
        --hero-y: -30px;
        --hero-scale: 0.96;
    }

    html.motion-ready .hero-enter--map {
        --hero-x: 0px;
        --hero-y: 48px;
        --hero-scale: 0.94;
    }
}

.btn-primary {
    position: relative;
    overflow: hidden;
}

.btn-primary::after {
    content: "";
    position: absolute;
    top: -80%;
    bottom: -80%;
    left: -42px;
    width: 28px;
    opacity: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.42), transparent);
    transform: skewX(-18deg);
    pointer-events: none;
}

@media (hover: hover) and (pointer: fine) {
    .btn-primary:hover::after {
        opacity: 1;
        animation: buttonSheen 720ms ease forwards;
    }
}

@keyframes buttonSheen {
    from {
        transform: translateX(0) skewX(-18deg);
    }

    to {
        transform: translateX(220px) skewX(-18deg);
    }
}

@media (prefers-reduced-motion: reduce) {
    .site-header,
    .site-header::before,
    .resource-card,
    .solution-card,
    .about-card,
    .job-item {
        transition: none;
    }

    .scroll-progress,
    .btn-primary::after {
        display: none;
    }

    html.motion-ready .scroll-reveal,
    html.motion-ready .hero-enter,
    html.motion-ready .hero-enter--left,
    html.motion-ready .hero-enter--right,
    html.motion-ready .hero-enter--drop,
    html.motion-ready .hero-enter--map {
        opacity: 1;
        transform: none;
        transition: none;
    }
}