:root {
    --color-primary: #0A5EB0;
    --color-primary-dark: #084A8F;
    --color-primary-deep: #062B50;
    --color-accent: #20B9D8;
    --color-electric: #66F7FF;
    --color-neon-green: #8DFFB5;
    --color-accent-soft: #E7F9FC;
    --color-primary-light: #E8F2FB;
    --color-primary-15: rgba(10, 94, 176, .15);
    --color-black: #1A1A1A;
    --color-dark-gray: #333333;
    --color-mid-gray: #666666;
    --color-light-gray: #F4F7FA;
    --color-soft-panel: #EEF4F9;
    --color-border: #E0E0E0;
    --color-white: #FFFFFF;
    --gradient-hero: linear-gradient(135deg, #0A5EB0 0%, #073F79 54%, #04101E 100%);
    --gradient-dark: linear-gradient(180deg, #1A1A1A 0%, #333333 100%);
    --gradient-primary: linear-gradient(135deg, #0A5EB0 0%, #062B50 72%, #031527 100%);
    --color-overlay: rgba(0, 0, 0, .6);
    --color-header-bg: rgba(255, 255, 255, .95);
    --font-heading: "DM Sans", "Noto Sans SC", sans-serif;
    --font-body: "Nunito Sans", "Noto Sans SC", sans-serif;
    --text-display: 60px;
    --text-h1: 48px;
    --text-h2: 36px;
    --text-h3: 24px;
    --text-h4: 20px;
    --text-body: 18px;
    --text-body-sm: 16px;
    --text-caption: 14px;
    --text-small: 12px;
    --leading-tight: 1.1;
    --leading-normal: 1.6;
    --leading-relaxed: 1.8;
    --weight-regular: 400;
    --weight-medium: 500;
    --weight-semibold: 600;
    --weight-bold: 700;
    --space-xs: 8px;
    --space-sm: 16px;
    --space-md: 24px;
    --space-lg: 40px;
    --space-xl: 60px;
    --space-2xl: 80px;
    --space-3xl: 120px;
    --space-4xl: 150px;
    --container-max: 1200px;
    --container-padding: 24px;
    --radius-none: 0;
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 14px;
    --shadow-card: 0 18px 45px rgba(11, 40, 68, .08);
    --shadow-hover: 0 24px 60px rgba(11, 40, 68, .16);
    --shadow-neon: 0 22px 70px rgba(32, 185, 216, .24);
    --shadow-header: 0 10px 30px rgba(11, 40, 68, .08);
    --transition-fast: .2s ease;
    --transition-normal: .3s ease;
}

/* Reset & Base */
*,
*:before,
*:after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    font-size: var(--text-body);
    font-weight: var(--weight-regular);
    line-height: var(--leading-normal);
    color: var(--color-dark-gray);
    background-color: #fbfcfe;
    overflow-x: hidden;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-primary-dark);
}

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

/* AOS Override */
html body [data-aos],
html body [data-aos][data-aos],
html body [data-aos][data-aos][data-aos-duration],
html body [data-aos][data-aos][data-aos-delay] {
    opacity: 1 !important;
    transform: none !important;
}

/* Lists */
ul,
ol {
    list-style: none;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    font-weight: var(--weight-bold);
    line-height: var(--leading-tight);
    color: var(--color-black);
}

h1 {
    font-size: var(--text-h1);
}

h2 {
    font-size: var(--text-h2);
}

h3 {
    font-size: var(--text-h3);
}

h4 {
    font-size: var(--text-h4);
}

p {
    margin-bottom: 4px !important;
    line-height: var(--leading-relaxed);
    text-align: justify;
    text-indent: 2em;
}

/* Layout Components */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    width: 100%;
}

.section {
    padding: var(--space-3xl) 0;
    background: #ffffff
}

.section--gray {
    background: linear-gradient(180deg, #ffffffd1, #f4f7faf5), var(--color-light-gray);
}

.section--dark {
    background: var(--gradient-dark);
    color: var(--color-white);
}

.section--primary {
    background: var(--gradient-primary);
    color: var(--color-white);
}

.section-title {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.section-title__line {
    width: 56px;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    margin: 0 auto var(--space-md);
    border-radius: 999px;
}

.section-title__label {
    font-size: var(--text-caption);
    font-weight: var(--weight-semibold);
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--color-primary);
    margin-bottom: var(--space-sm);
    text-align: center !important;
    text-indent: 0 !important;
}

.section-title h2 {
    margin-bottom: var(--space-sm);
    text-align: center !important;
}

.section-title p {
    color: var(--color-mid-gray);
    max-width: 600px;
    margin: 0 auto;
    text-align: center !important;
    text-indent: 0 !important;
}

/* 左右两栏布局中的标题左对齐 */
.two-col .section-title__line {
    margin: 0 0 var(--space-md) !important;
}

.two-col .section-title__label {
    text-align: left !important;
}

.two-col h2 {
    text-align: left !important;
}

.two-col p:not(.section-title__label) {
    text-align: justify !important;
    text-indent: 2em !important;
    margin-bottom: var(--space-sm);
}



/* Grid & Flex */
.grid {
    display: grid;
    gap: var(--space-lg);
}

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

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

.grid--4 {
    grid-template-columns: repeat(4, 1fr);
}

.flex {
    display: flex;
}

.flex--center {
    align-items: center;
    justify-content: center;
}

.flex--between {
    align-items: center;
    justify-content: space-between;
}

/* Utility */
.text-center {
    text-align: center;
}

.text-white {
    color: var(--color-white);
}

.text-primary {
    color: var(--color-primary);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
    font-size: var(--text-caption);
    font-weight: var(--weight-bold);
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 16px 36px;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--transition-normal);
    text-decoration: none;
    line-height: 1;
    min-height: 48px;
}

.btn--primary {
    background: linear-gradient(135deg, var(--color-primary), #1181D7);
    color: var(--color-white);
    border-color: var(--color-primary);
    box-shadow: 0 14px 28px #0a5eb03d;
}

.btn--primary:hover {
    background-color: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    color: var(--color-white);
}

.btn--outline {
    background-color: transparent;
    color: var(--color-white);
    border-color: var(--color-white);
}

.btn--outline:hover {
    background-color: var(--color-white);
    color: var(--color-black);
}

.btn--outline-dark {
    background-color: transparent;
    color: var(--color-black);
    border-color: #1a1a1a2e;
}

.btn--outline-dark:hover {
    background-color: var(--color-black);
    color: var(--color-white);
}

/* Scroll Top */
.scroll-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 44px;
    height: 44px;
    background-color: var(--color-primary);
    color: var(--color-white);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    z-index: 999;
}

.scroll-top.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-top:hover {
    background-color: var(--color-primary-dark);
}

/* Site Header */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: linear-gradient(90deg, #0A5EB0c7, #062b508a, #04101eb8);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-bottom: 3px solid rgba(102, 247, 255, .22);
    transition: box-shadow var(--transition-normal), background var(--transition-normal);
}

.site-header.scrolled {
    box-shadow: var(--shadow-header), 0 1px #20b9d829;
    background: #fffffff0;
}

.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.header-logo img {
    height: 48px;
    width: auto;
}

.header-nav .nav-list {
    display: flex;
    gap: var(--space-lg);
}

.header-nav .nav-item a {
    font-family: var(--font-heading);
    font-size: var(--text-body-sm);
    font-weight: var(--weight-medium);
    color: #ffffffe0;
    padding: 8px 0;
    position: relative;
    transition: color var(--transition-fast);
}

.site-header.scrolled .header-nav .nav-item a {
    color: var(--color-dark-gray);
}

.header-nav .nav-item a:after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--color-electric), var(--color-primary));
    box-shadow: 0 0 16px #66f7ffa6;
    transition: width var(--transition-normal);
}

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

.header-nav .nav-item.active a:after,
.header-nav .nav-item a:hover:after {
    width: 100%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    z-index: 1001;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-white);
    transition: all var(--transition-normal);
}

.site-header.scrolled .nav-toggle span,
.nav-toggle.active span {
    background-color: var(--color-black);
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

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

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Site Footer */
.site-footer {
    background-color: var(--color-black);
    color: var(--color-white);
    border-top: 4px solid var(--color-primary);
}

.footer-main {
    padding: var(--space-2xl) 0;
}

.footer-main .container {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1.3fr 1fr;
    gap: var(--space-lg);
}

.footer-brand p {
    color: #ffffffb3;
    font-size: var(--text-body-sm);
    margin-top: var(--space-md);
    line-height: var(--leading-relaxed);
}

.footer-col h4 {
    color: var(--color-white);
    font-size: var(--text-body-sm);
    font-weight: var(--weight-semibold);
    margin-bottom: var(--space-md);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.footer-col ul li {
    margin-bottom: var(--space-sm);
}

.footer-col ul li a {
    color: #ffffffb3;
    font-size: var(--text-body-sm);
    transition: color var(--transition-fast);
}

.footer-col ul li a:hover {
    color: var(--color-white);
}

.footer-contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    margin-bottom: var(--space-sm);
    color: #ffffffb3;
    font-size: var(--text-body-sm);
    white-space: nowrap;
}

.footer-qrcodes {
    display: flex;
    gap: var(--space-md);
}

.footer-qrcode {
    text-align: center;
    width: 100px;
    flex-shrink: 0;
}

.footer-qrcode img {
    width: 100px !important;
    height: 100px !important;
    object-fit: cover !important;
    object-position: center;
    margin-bottom: var(--space-xs);
}

.footer-qrcode span {
    font-size: var(--text-small);
    color: #ffffffb3;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, .1);
    padding: var(--space-md) 0;
    text-align: center;
}

.footer-bottom p {
    color: #ffffff80;
    font-size: var(--text-small);
    margin: 0;
}

/* Page Hero */
.page-hero {
    min-height: 40vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    background: var(--gradient-hero);
    padding-top: 80px;
}

.page-hero__content {
    position: relative;
    z-index: 2;
}

.page-hero h1 {
    color: var(--color-white);
    font-size: var(--text-h1);
    margin-bottom: var(--space-sm);
}

.page-hero .breadcrumb {
    color: #fff9;
    font-size: var(--text-body-sm);
}

.page-hero .breadcrumb a {
    color: #fff9;
}

.page-hero .breadcrumb a:hover {
    color: var(--color-white);
}

/* Home Hero */
.home-hero {
    min-height: 92vh;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    text-align: left;
    position: relative;
    background-size: cover;
    background-position: center right;
    background-repeat: no-repeat;
    padding-top: 80px;
    overflow: hidden;
}

.home-hero:before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(rgba(102, 247, 255, .11) 1px, transparent 1px),
                linear-gradient(90deg, rgba(102, 247, 255, .09) 1px, transparent 1px),
                radial-gradient(circle at 78% 42%, rgba(32, 185, 216, .36), transparent 24%),
                radial-gradient(circle at 58% 64%, rgba(141, 255, 181, .16), transparent 22%),
                linear-gradient(90deg, #030a14cc, #051a31a8 42%, #0a5eb040);
    background-size: 54px 54px, 54px 54px, auto, auto, auto;
    z-index: 1;
}

.home-hero {
  position: relative;
  overflow: hidden;
  background: transparent !important;

  /* 重点：底部斜线 */
  clip-path: polygon(0 0, 100% 0, 100% 95%, 0 100%);
}

.tech-orbit {
    position: absolute;
    right: clamp(24px, 8vw, 130px);
    top: 22%;
    width: clamp(260px, 32vw, 470px);
    aspect-ratio: 1;
    z-index: 1;
    pointer-events: none;
    border: 1px solid rgba(102, 247, 255, .18);
    border-radius: 50%;
    filter: drop-shadow(0 0 34px rgba(32, 185, 216, .28));
    animation: techSpin 26s linear infinite;
}

.tech-orbit:before,
.tech-orbit:after,
.tech-orbit span {
    content: "";
    position: absolute;
    border-radius: 50%;
    border: 1px solid rgba(102, 247, 255, .18);
}

.tech-orbit:before {
    top: 12%;
    right: 12%;
    bottom: 12%;
    left: 12%;
}

.tech-orbit:after {
    top: 29%;
    right: 29%;
    bottom: 29%;
    left: 29%;
    border-style: dashed;
    border-color: #8dffb53d;
}

.tech-orbit span:nth-child(1) {
    width: 11px;
    height: 11px;
    right: 12%;
    top: 25%;
    background: var(--color-electric);
    box-shadow: 0 0 22px var(--color-electric);
}

.tech-orbit span:nth-child(2) {
    width: 8px;
    height: 8px;
    left: 18%;
    bottom: 24%;
    background: var(--color-accent);
    box-shadow: 0 0 18px var(--color-accent);
}

.tech-orbit span:nth-child(3) {
    width: 6px;
    height: 6px;
    left: 48%;
    top: 2%;
    background: var(--color-neon-green);
    box-shadow: 0 0 18px var(--color-neon-green);
}

.home-hero__content {
    position: relative;
    z-index: 2;
    width: min(100%, var(--container-max));
    max-width: none;
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.home-hero__label {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    font-size: var(--text-caption);
    font-weight: var(--weight-semibold);
    letter-spacing: 4px;
    text-transform: uppercase;
    color: #fffc;
    margin-bottom: var(--space-md);
}

.home-hero__label:before {
    content: "";
    width: 42px;
    height: 2px;
    background: var(--color-accent);
    box-shadow: 0 0 24px #20b9d8cc;
}

.home-hero h1 {
    font-size: var(--text-display);
    background: linear-gradient(90deg, rgba(255, 255, 255, 0.85) 0%, rgba(255, 255, 255, 0.85) 0%, rgba(255, 255, 255, 0.85) 0%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--space-md);
    line-height: var(--leading-tight);
    max-width: 820px;
    text-shadow: none;
    filter: none;
    opacity: 0.88;
    filter: none;
}

.home-hero__subtitle {
    font-size: var(--text-h4);
    color: #fffc;
    margin-bottom: var(--space-xl);
    font-weight: var(--weight-regular);
    max-width: 660px;
}

.hero-metrics {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 150px));
    gap: 12px;
    margin: 0 0 var(--space-lg);
    max-width: 500px;
}

.hero-metric {
    position: relative;
    padding: 14px 16px;
    background: linear-gradient(145deg, #084a8f80, #030f1d70);
    border: 1px solid rgba(102, 247, 255,0.35);
    border-radius: var(--radius-md);
    box-shadow: inset 0 1px #ffffff1f, 0 16px 40px #0000003e;
    overflow: hidden;
}

.hero-metric:after {
    content: "";
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    background: linear-gradient(115deg, transparent 0 36%, rgba(102, 247, 255, .18) 45%, transparent 54% 100%);
    transform: translate(-120%);
    animation: scanLight 4.8s ease-in-out infinite;
}

.hero-metric span {
    display: block;
    color: var(--color-white);
    font-size: 22px;
    font-family: var(--font-heading);
    font-weight: var(--weight-bold);
    line-height: 1.1;
}

.hero-metric small {
    display: block;
    margin-top: 6px;
    color: #ffffffad;
    font-size: var(--text-small);
}

.home-hero__buttons {
    display: flex;
    gap: var(--space-md);
    justify-content: flex-start;
}

.hero-tech-panel {
    position: absolute;
    right: clamp(24px, 6vw, 96px);
    bottom: clamp(72px, 13vh, 150px);
    z-index: 2;
    width: min(360px, 28vw);
    padding: 18px;
    color: var(--color-white);
    background: linear-gradient(145deg, #04101eb8, #062b506b);
    border: 1px solid rgba(102, 247, 255, .28);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-neon), inset 0 1px #ffffff29;
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
}

.hero-tech-panel:before {
    content: "";
    position: absolute;
    top: -1px;
    right: -1px;
    bottom: -1px;
    left: -1px;
    border-radius: inherit;
    background: linear-gradient(135deg, rgba(102, 247, 255, .5), transparent 26%, transparent 72%, rgba(141, 255, 181, .34));
    opacity: .58;
    z-index: -1;
}

.hero-tech-panel__head,
.tech-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.hero-tech-panel__head {
    margin-bottom: 18px;
    font-family: var(--font-heading);
    font-size: var(--text-small);
    font-weight: var(--weight-bold);
    letter-spacing: 2.5px;
    color: var(--color-electric);
}

.hero-tech-panel__head i {
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: var(--color-neon-green);
    box-shadow: 0 0 18px var(--color-neon-green);
    animation: pulseDot 1.4s ease-in-out infinite;
}

.tech-row {
    gap: 16px;
    margin-top: 14px;
    font-size: var(--text-small);
}

.tech-row strong {
    font-size: var(--text-caption);
}

.tech-row span {
    color: #ffffff9e;
}

.tech-progress {
    height: 6px;
    margin-top: 8px;
    background: #ffffff1f;
    border-radius: 999px;
    overflow: hidden;
}

.tech-progress span {
    display: block;
    height: 100%;
    border-radius: inherit;
    background: linear-gradient(90deg, var(--color-primary), var(--color-electric), var(--color-neon-green));
    box-shadow: 0 0 20px #66f7ff8f;
}

.home-hero__scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translate(-50%);
    z-index: 2;
    color: #fff9;
    animation: bounce 2s infinite;
}

/* Feature Card */
.feature-card {
    background: linear-gradient(180deg, #fffffffa, #f7fbfffa), var(--color-white);
    padding: var(--space-xl);
    box-shadow: var(--shadow-card);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(10, 94, 176, .08);
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.feature-card:after,
.video-card:after,
.case-item:after {
    content: "";
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    pointer-events: none;
    background: linear-gradient(135deg, rgba(102, 247, 255, .16), transparent 32%, transparent 68%, rgba(10, 94, 176, .12));
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.feature-card:before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.feature-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-8px);
    border-color: #20b9d847;
}

.feature-card:hover:before {
    opacity: 1;
}

.feature-card:hover:after,
.video-card:hover:after,
.case-item:hover:after {
    opacity: 1;
}

.feature-card__number{
    font-family:var(--font-heading);
    font-size:72px;
    font-weight:var(--weight-bold);
    color:var(--color-primary-15);
    position:absolute;
    top:-5px;right:20px;
    line-height:1
}

.feature-card__icon {
    width: 48px;
    height: 48px;
    background-color: var(--color-primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-md);
}

.feature-card h3 {
    font-size: var(--text-h3);
    margin-bottom: var(--space-sm);
}

.feature-card p {
    color: var(--color-mid-gray);
    font-size: var(--text-body-sm);
    letter-spacing: normal;
    text-align: left;
}

.feature-card__link {
    display: inline-block;
    margin-top: auto;
    font-size: var(--text-caption);
    font-weight: var(--weight-semibold);
    color: var(--color-primary);
}

.feature-card__link:hover {
    color: var(--color-primary-dark);
}

/* Stats Section */
.stats-section {
    padding: var(--space-xl) 0;
    position: relative;
    overflow: hidden;
}

.stats-section:before {
    content: "";
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    background: linear-gradient(rgba(255, 255, 255, .08) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, .08) 1px, transparent 1px);
    background-size: 44px 44px;
    opacity: .34;
}

.stats-section:after,
.cta-section:after {
    content: "";
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    pointer-events: none;
    background: linear-gradient(90deg, transparent, rgba(102, 247, 255, .14), transparent);
    transform: translate(-100%);
    animation: sectionScan 7s ease-in-out infinite;
}

.stats-section .container {
    position: relative;
    z-index: 1;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
    text-align: center;
}

.stat-item__number {
    font-family: var(--font-heading);
    font-size: 48px;
    font-weight: var(--weight-bold);
    line-height: 1;
    margin-bottom: var(--space-xs);
}

.stat-item__label {
    font-size: var(--text-body-sm);
    font-weight: var(--weight-medium);
    opacity: .9;
}

/* Video Card */
.video-card {
    position: relative;
    cursor: pointer;
    overflow: hidden;
    border-radius: var(--radius-lg);
    background: var(--color-white);
    box-shadow: var(--shadow-card);
    border: 1px solid rgba(10, 94, 176, .08);
}

.video-card,
.case-item {
    transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.video-card:hover,
.case-item:hover {
    transform: translateY(-6px);
    border-color: #20b9d83d;
    box-shadow: var(--shadow-hover);
}

.video-card__thumb {
    position: relative;
    padding-top: 56.25%;
    overflow: hidden;
    background: var(--color-soft-panel);
}

.video-card__thumb img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-normal);
}

.video-card:hover .video-card__thumb img {
    transform: scale(1.05);
}

.video-card__play {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 56px;
    height: 56px;
    background-color: #0a5eb0e6;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-normal);
}

.video-card:hover .video-card__play {
    transform: translate(-50%, -50%) scale(1.1);
    background-color: var(--color-primary);
}

.video-card__play:after {
    content: "";
    display: block;
    width: 0;
    height: 0;
    border-style: solid;
    border-width: 10px 0 10px 18px;
    border-color: transparent transparent transparent var(--color-white);
    margin-left: 3px;
}

.video-card__title {
    padding: 18px 20px;
    font-size: var(--text-body-sm);
    font-weight: var(--weight-medium);
    color: var(--color-dark-gray);
    text-align: left;
}

/* Case Item */
.case-item {
    position: relative;
    overflow: hidden;
    cursor: pointer;
    display: block;
    border-radius: var(--radius-lg);
    background: var(--color-white);
    box-shadow: var(--shadow-card);
    border: 1px solid rgba(10, 94, 176, .08);
}

.case-item__thumb {
    position: relative;
    padding-top: 100%;
    overflow: hidden;
}

.case-item__thumb img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-normal);
}

.case-item:hover .case-item__thumb img {
    transform: scale(1.05);
}

.case-item__overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, #0a5eb0e6);
    padding: var(--space-xl) var(--space-md) var(--space-md);
    transform: translateY(100%);
    transition: transform var(--transition-normal);
}

.case-item:hover .case-item__overlay {
    transform: translateY(0);
}

.case-item__overlay h4 {
    color: var(--color-white);
    font-size: var(--text-body-sm);
    font-weight: var(--weight-semibold);
}

.case-item__overlay span {
    color: #fffc;
    font-size: var(--text-small);
}

.case-item__tag {
    position: absolute;
    top: var(--space-sm);
    right: var(--space-sm);
    background: #062b50e0;
    color: var(--color-white);
    font-size: var(--text-small);
    padding: 5px 12px;
    z-index: 2;
    border-radius: 999px;
    -webkit-backdrop-filter: blur(8px);
    backdrop-filter: blur(8px);
}

.case-item__title {
    padding: 18px 20px;
    font-size: var(--text-body-sm);
    color: var(--color-dark-gray);
    text-align: left;
    font-weight: var(--weight-medium);
}

/* Filter Bar */
.filter-bar {
    display: flex;
    gap: var(--space-sm);
    justify-content: center;
    margin-bottom: var(--space-xl);
    flex-wrap: wrap;
}

.filter-btn {
    padding: 10px 28px;
    font-family: var(--font-heading);
    font-size: var(--text-caption);
    font-weight: var(--weight-semibold);
    border: 1px solid var(--color-border);
    background-color: var(--color-white);
    color: var(--color-dark-gray);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.filter-btn:hover,
.filter-btn.active {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-white);
}

/* Spec Table */
.spec-table-wrapper {
    overflow-x: auto;
    margin-bottom: var(--space-lg);
}

.spec-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--text-body-sm);
}

.spec-table th {
    background-color: var(--color-primary);
    color: var(--color-white);
    font-weight: var(--weight-semibold);
    padding: 14px 20px;
    text-align: left;
    white-space: nowrap;
}

.spec-table td {
    padding: 12px 20px;
    border-bottom: 1px solid var(--color-border);
}

.spec-table tbody tr:nth-child(2n) {
    background-color: var(--color-light-gray);
}

.spec-table tbody tr:hover {
    background-color: var(--color-primary-light);
}

/* News Card */
.news-card {
    display: flex;
    gap: var(--space-lg);
    padding: var(--space-lg);
    background-color: var(--color-white);
    box-shadow: var(--shadow-card);
    transition: all var(--transition-normal);
}

.news-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-2px);
}

.news-card__image {
    flex-shrink: 0;
    width: 300px;
}

.news-card__image img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.news-card__content {
    flex: 1;
}

.news-card__date {
    font-size: var(--text-caption);
    color: var(--color-primary);
    font-weight: var(--weight-semibold);
    margin-bottom: var(--space-xs);
}

.news-card__title {
    font-size: var(--text-h3);
    margin-bottom: var(--space-sm);
    color: var(--color-black);
    font-weight: var(--weight-semibold);
}

.news-card__title:hover {
    color: var(--color-primary);
}

.news-card__excerpt {
    color: var(--color-mid-gray);
    font-size: var(--text-body-sm);
    margin-bottom: var(--space-md);
}

.news-card__link {
    font-size: var(--text-caption);
    font-weight: var(--weight-semibold);
    color: var(--color-primary);
}

/* Tabs */
.tab-nav {
    display: flex;
    background-color: var(--color-light-gray);
}

.tab-nav__item {
    flex: 1;
    padding: 18px 32px;
    font-family: var(--font-heading);
    font-size: var(--text-body);
    font-weight: var(--weight-semibold);
    text-align: center;
    cursor: pointer;
    background: none;
    border: none;
    color: var(--color-mid-gray);
    transition: all var(--transition-normal);
}

.tab-nav__item:hover {
    color: var(--color-primary);
}

.tab-nav__item.active {
    background-color: var(--color-primary);
    color: var(--color-white);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* Video Modal */
.video-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: #000000e6;
    z-index: 9999;
    display: none;
    align-items: center;
    justify-content: center;
}

.video-modal.active {
    display: flex;
}

.video-modal__content {
    position: relative;
    width: 90%;
    max-width: 900px;
}

.video-modal__close {
    position: absolute;
    top: -40px;
    right: 0;
    background: none;
    border: none;
    color: var(--color-white);
    font-size: 32px;
    cursor: pointer;
    padding: 8px;
    line-height: 1;
}

.video-modal video {
    width: 100%;
    border-radius: var(--radius-none);
}

/* Timeline */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline:before {
    content: "";
    position: absolute;
    top: 0;
    left: 50%;
    transform: translate(-50%);
    width: 2px;
    height: 100%;
    background-color: var(--color-border);
}

.timeline-item {
    display: flex;
    margin-bottom: var(--space-xl);
    position: relative;
}

.timeline-item:nth-child(odd) {
    justify-content: flex-start;
    padding-right: calc(50% + 30px);
}

.timeline-item:nth-child(2n) {
    justify-content: flex-end;
    padding-left: calc(50% + 30px);
}

.timeline-item__dot {
    position: absolute;
    left: 50%;
    transform: translate(-50%);
    width: 16px;
    height: 16px;
    background-color: var(--color-primary);
    border: 3px solid var(--color-white);
    box-shadow: 0 0 0 2px var(--color-primary);
    top: 5px;
}

.timeline-item__content {
    background-color: var(--color-white);
    padding: var(--space-md);
    box-shadow: var(--shadow-card);
}

.timeline-item__year {
    font-family: var(--font-heading);
    font-size: var(--text-h4);
    font-weight: var(--weight-bold);
    color: var(--color-primary);
    margin-bottom: var(--space-xs);
}

.timeline-item__text {
    font-size: var(--text-body-sm);
    color: var(--color-mid-gray);
    margin: 0;
}

/* Two Column Layout */
.two-col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    align-items: center;
}

.two-col--60-40 {
    grid-template-columns: 3fr 2fr;
}

.two-col--40-60 {
    grid-template-columns: 2fr 3fr;
}

.home-hero+.section .two-col img {
    border-radius: var(--radius-lg);
    border: 1px solid rgba(10, 94, 176, .08);
}

.home-hero+.section .two-col>div:first-child {
    position: relative;
}

.home-hero+.section .two-col>div:first-child:before {
    content: "";
    position: absolute;
    left: -24px;
    top: 4px;
    width: 4px;
    height: 96px;
    background: linear-gradient(var(--color-primary), var(--color-accent));
    border-radius: 999px;
}

/* CTA Section */
.cta-section {
    text-align: center;
    padding: 100px 0;
    background: radial-gradient(circle at 20% 20%, rgba(32, 185, 216, .22), transparent 28%), var(--gradient-hero);
    position: relative;
    overflow: hidden;
}

.cta-section:before {
    content: "";
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    background: linear-gradient(rgba(102, 247, 255, .1) 1px, transparent 1px),
                linear-gradient(90deg, rgba(102, 247, 255, .08) 1px, transparent 1px);
    background-size: 48px 48px;
    opacity: .32;
}

.cta-section .container {
    position: relative;
    z-index: 1;
}

.cta-section h2 {
    color: var(--color-white);
    margin-bottom: var(--space-md);
}

.cta-section p {
    color: #fffc;
    margin-bottom: var(--space-xl);
    font-size: var(--text-h4);
}

/* Keyframes Animation */
@keyframes bounce {
    0%, 20%, 50%, 80%, to {
        transform: translate(-50%) translateY(0);
    }
    40% {
        transform: translate(-50%) translateY(-10px);
    }
    60% {
        transform: translate(-50%) translateY(-5px);
    }
}

@keyframes techSpin {
    to {
        transform: rotate(360deg);
    }
}

@keyframes scanLight {
    45%, to {
        transform: translate(120%);
    }
}

@keyframes pulseDot {
    50% {
        opacity: .45;
        transform: scale(1.35);
    }
}

@keyframes sectionScan {
    55%, to {
        transform: translate(100%);
    }
}

/* Responsive 1024px */
@media (max-width: 1024px) {
    :root {
        --text-display: 48px;
        --text-h1: 40px;
        --text-h2: 32px;
    }
    .grid--3,
    .grid--4 {
        grid-template-columns: repeat(2, 1fr);
    }
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-lg);
    }
    .footer-main .container {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-lg);
    }
    .cases-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .two-col,
    .two-col--60-40,
    .two-col--40-60 {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
    .news-card {
        flex-direction: column;
    }
    .news-card__image {
        width: 100%;
    }
    .news-card__image img {
        height: 200px;
    }
}

/* Responsive 768px */
@media (max-width: 768px) {
    :root {
        --text-display: 36px;
        --text-h1: 32px;
        --text-h2: 28px;
        --text-h3: 20px;
        --text-body: 16px;
        --space-3xl: 60px;
        --space-4xl: 80px;
    }
    .nav-toggle {
        display: flex;
    }
    .header-nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 320px;
        height: 100vh;
        background-color: var(--color-white);
        padding: 100px 32px 32px;
        box-shadow: -5px 0 30px #0000001a;
        transition: right .3s ease;
        z-index: 1000;
    }
    .header-nav.active {
        right: 0;
    }
    .header-nav .nav-list {
        flex-direction: column;
        gap: 0;
    }
    .header-nav .nav-item {
        border-bottom: 1px solid var(--color-border);
    }
    .header-nav .nav-item a {
        display: block;
        padding: 16px 0;
        font-size: 18px;
    }
}

/* Product Poster Styles */
.poster-list {
    display: flex;
    flex-direction: column;
    gap: 0;
    border-radius: var(--radius-xl);
    overflow: hidden;
    margin-top: calc(-1 * var(--space-xl));
}

.product-poster {
    display: flex;
    flex-direction: column;
    gap: 12px;
    background: linear-gradient(135deg, rgba(10, 94, 176, 0.12), rgba(102, 247, 255, 0.08));
    padding: var(--space-2xl);
    border-bottom: 1px solid rgba(10, 94, 176, .1);
    overflow: hidden;
}

.product-poster:last-child {
    border-bottom: none;
}

/* 产品导航栏 - 自动隐藏 */
.product-nav {
    position: fixed;
    left: -199px;
    top: 80px;
    bottom: 0;
    width: 200px;
    background: rgba(255, 255, 255, 0.1);
    border-right: none;
    z-index: 100;
    overflow-y: auto;
    padding: 0;
    margin: 0;
    box-shadow: none;
    backdrop-filter: blur(0px);
    transition: left 0.2s ease, background 0.2s ease, box-shadow 0.2s ease, backdrop-filter 0.2s ease;
}

.product-nav.visible {
    left: 0;
    background: rgba(255, 255, 255, 0.15);
    box-shadow: 2px 0 15px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(15px);
}

.product-nav__title {
    font-size: 14px;
    font-weight: 600;
    color: #333;
    padding: 16px 20px;
    background: #e8e8e8;
    border-bottom: 1px solid #d0d0d0;
    margin: 0;
}

.product-nav__list {
    list-style: none;
    padding: 8px 0;
    margin: 0;
}

.product-nav__list li {
    margin: 0;
}

.product-nav__link {
    display: block;
    padding: 10px 16px;
    font-size: 14px;
    color: #000000;
    text-decoration: none;
    transition: all 0.2s ease;
    line-height: 1.4;
    border-radius: 0;
}

.product-nav__link:hover {
    background: rgba(10, 94, 176, 0.08);
    color: #0A5EB0;
}

.product-nav__link.active {
    background: #0A5EB0;
    color: white;
    font-weight: 600;
    padding-left: 16px;
    padding-right: 16px;
    margin: 0;
    font-weight: 600;
}

.product-poster:nth-of-type(odd) {
    background: linear-gradient(135deg, rgba(10, 94, 176, 0.08) 0%, rgba(102, 247, 255, 0.05) 100%);
}

.product-poster:nth-of-type(even) {
    background: rgba(255, 255, 255, 0.95);
}

.product-poster__header {
    text-align: center;
}

.product-poster__tag {
    display: inline-block;
    background: var(--color-primary-light);
    color: var(--color-primary);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    font-size: var(--text-caption);
    font-weight: var(--weight-semibold);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--space-md);
}

.product-poster__title {
    font-size: var(--text-h2);
    font-weight: var(--weight-bold);
    color: var(--color-dark);
    margin-bottom: var(--space-md);
    line-height: var(--leading-tight);
}

.product-poster__desc {
    font-size: var(--text-body);
    color: var(--color-mid-gray);
    line-height: var(--leading-relaxed);
    text-align: justify;
    text-indent: 2em;
    max-width: 900px;
    margin: 0 auto;
    margin-bottom: 0 !important;
    padding-bottom: 0;
}

.product-poster > p.product-poster__desc {
    margin-bottom: 0 !important;
}

.product-poster__image {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    max-width: 900px;
    margin: 0 auto;
}

.product-poster__image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    transition: transform var(--transition-normal);
}

.product-poster:hover .product-poster__image img {
    transform: scale(1.02);
}

.product-poster__process {
    background: rgba(10, 94, 176, 0.08);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    margin-top: var(--space-md);
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.product-poster__process-title {
    font-size: var(--text-h4);
    font-weight: var(--weight-semibold);
    color: var(--color-dark);
    margin-bottom: var(--space-md);
    text-align: center;
}

.product-poster__process p {
    font-size: var(--text-body);
    color: var(--color-mid-gray);
    line-height: var(--leading-relaxed);
}

/* Responsive */
@media (max-width: 768px) {
    .product-poster {
        padding: var(--space-lg);
    }
    
    .product-poster__image img {
        height: 280px;
    }
    
    .product-poster__title {
        font-size: var(--text-h3);
    }
}

/* Product Poster Gallery */
.product-poster__gallery {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-md);
    margin: var(--space-lg) auto;
    max-width: 900px;
}

.product-poster__gallery-item {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    aspect-ratio: 1;
}

.product-poster__gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-normal);
}

.product-poster__gallery-item:hover img {
    transform: scale(1.05);
}

/* Responsive */
@media (max-width: 992px) {
    .product-poster__gallery {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .product-poster__gallery {
        grid-template-columns: 1fr;
    }
}